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1.
Int. j. morphol ; 40(1): 122-128, feb. 2022. ilus
Artigo em Inglês | LILACS | ID: biblio-1385569

RESUMO

SUMMARY: Induction of osteoarthritis (OA) following diabetes is characterized by a sever inflammation of the joints that can lead to disability. The cartilage content of proteoglycans can substantially be reduced, following the induction of diabetes mellitus associated with inflammation as well as knee joint injury, and the antidiabetic drug metformin combined with the anti-inflammatory agent resveratrol can prevent these deleterious effects. Therefore, insulin-independent diabetes, type 2 diabetes mellitus (T2DM) was induced in Albino rats by streptozotocin (STZ) injection (50 mg/kg) after being fed on a high carbohydrate and fat diets for 2 weeks. The protective group of rats which also received a single injection of STZ was treated daily with metformin (Met; 200 mg/kg) and resveratrol (Res; 30 mg/kg) for 12 weeks. Harvested knee joint tissues were prepared for basic histology stain and for proteoglycans staining using light microscopy. Histology images showed in diabetic rats (T2DM) OA development as demonstrated by profound injury to the knee joint and severe decrease of articular cartilage proteoglycans content, which were substantialy protected by Met+Res. Met+Res also significantly (p< 0.0001) decreased diabetes induced glycemia, dyslipidemia, and the inflammatory biomarkers, tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), and high sensitivity C-reactive protein (hs-CRP). In addition, there was a significant correlation between OA and glycemia, dyslipidemia, and inflammation. Collectively, we demonstrate an association between knee joint damage and biomarkers of glycemia, dyslipidemia, and inflammation in diabetes-induced OA, with metformin plus resveratrol providing protective effects.


RESUMEN: La inducción de osteoartritis (OA) después de la diabetes se caracteriza por una inflamación severa de las articulaciones que puede conducir a la discapacidad. El contenido de cartílago de proteoglicanos se puede reducir sustancialmente, luego de la inducción de diabetes mellitus asociada con inflamación y lesión en la articulación de la rodilla sin embargo, el fármaco antidiabético metformina combinado con el agente antiinflamatorio resveratrol puede prevenir estos efectos nocivos. Por lo tanto, se indujo diabetes insulino dependiente, diabetes mellitus tipo 2 (T2DM) en ratas albinas mediante inyección de estreptozotocina (STZ) (50 mg/kg) después de haber sido alimentadas con dietas ricas en carbohidratos y grasas durante 2 semanas. El grupo protector de ratas que también recibió una inyección única de STZ fue tratado diariamente con metformina (Met; 200 mg/kg) y resveratrol (Res; 30 mg/kg) durante 12 semanas. Tejidos de la articulación de la rodilla fueon retirados y teñidos con histología básica y tinción de proteoglicanos usando microscopía óptica. Las imágenes histológicas en ratas diabéticas mostraban (T2DM) desarrollo de OA visualizadas por una lesión profunda en la articulación de la rodilla y una disminución severa del contenido de proteoglicanos del cartílago articular, los cuales estaban sustancialmente protegidos por Met+Res. Met+Res. También disminuyó significativamente (p< 0,0001) la glucemia inducida por la diabetes, la dislipidemia y los biomarcadores inflamatorios, el factor de necrosis tumoral alfa (TNF-α), la interleucina-6 (IL-6) y la proteína C reactiva de alta sensibilidad (PCR-hs). Además, hubo una correlación significativa entre la OA y la glucemia, la dislipidemia y la inflamación. En conjunto, demostramos una asociación entre el daño de la articulación de la rodilla y los biomarcadores de glucemia, dislipidemia e inflamación en la OA inducida por diabetes, con metformina más resveratrol que brindan efectos protectores.


Assuntos
Animais , Masculino , Ratos , Osteoartrite/prevenção & controle , Diabetes Mellitus Experimental , Resveratrol/administração & dosagem , Metformina/administração & dosagem , Proteoglicanas/efeitos dos fármacos , Modelos Animais de Doenças , Hipoglicemiantes/administração & dosagem , Inflamação , Anti-Inflamatórios/administração & dosagem
2.
Rev. Assoc. Med. Bras. (1992) ; 68(2): 147-151, Feb. 2022. tab
Artigo em Inglês | LILACS | ID: biblio-1365347

RESUMO

SUMMARY OBJECTIVE: Beta-thalassemia minor is a blood disease caused by a hereditary decrease in beta-globin synthesis, frequently leading to hypochromic microcytic anemia. Formerly called endothelial cell-specific molecule 1, endocan is a proteoglycan released by vascular endothelial cells in many organs. Our aim was to investigate the relationship between the beta-thalassemia minor patients and the healthy control group in terms of serum endocan level. METHODS: The study was performed in a total of 80 subjects. They were divided into two groups, the beta-thalassemia minor group (n=40) and the healthy control group (n=40). Serum endocan levels, age, sex, body mass index value, and tobacco use data of these groups were compared. RESULTS: No statistically significant difference was detected between the two groups in terms of age, sex, and body mass index values (p>0.05). Endocan levels were measured to be 206.85±88.1 pg/mL in the beta-thalassemia minor group and 236.1±162.8 pg/mL in the control group with no significant difference between the groups in terms of serum endocan levels (p>0.05). CONCLUSIONS: In our study, there was no change in endocan level in beta-thalassemia minor. This might be because serum endocan levels are affected by multi-factorial reasons. Serum endocan levels may be altered secondarily to decreased beta-globin chain, increased sympathetic activity due to anemia, or platelet dysfunction induced by oxidative stress in beta-thalassemia minor. Further multicenter studies involving more patients are necessary to demonstrate this.


Assuntos
Humanos , Proteoglicanas , Talassemia beta , Proteínas de Neoplasias , Biomarcadores , Índice de Massa Corporal , Células Endoteliais
3.
Arq. bras. cardiol ; 116(4): 756-762, abr. 2021. tab, graf
Artigo em Inglês, Português | LILACS | ID: biblio-1285206

RESUMO

Resumo Fundamento: Sugere-se que a serglicina tenha funções importantes na estabilização da fibrina e inflamação, mas há informações limitadas sobre seu valor clínico para a doença cardíaca aterosclerótica. Objetivo: O objetivo do presente estudo é descobrir os níveis séricos de serglicina em pacientes com infarto agudo do miocárdio e nos indivíduos do grupo controle; e investigar a associação entre os níveis de serglicina com marcadores de inflamação e marcadores de tamanho do infarto. Métodos: A população do estudo consistiu em 75 pacientes com infarto do miocárdio com supradesnivelamento do segmento ST (IAMCSST) e 57 pacientes com artérias coronárias normais (NCA) (grupo controle). As características dos pacientes, os níveis séricos de serglicina, os níveis de proteína C-reativa ultrassensível (PCR-us), os níveis máximos de troponina T e outros parâmetros bioquímicos foram registrados. O valor de p<0,05 foi considerado estatisticamente significativo. Resultados: O grupo controle consistiu em indivíduos mais jovens e que fumam menos do que os do grupo IAMCSST. O número de mulheres no grupo controle foi maior do que no grupo IAMCSST. Os níveis séricos de serglicina foram significativamente maiores no grupo IAMCSST do que no grupo controle (102,81±39,42 vs. 57,13±32,25, p<0,001). As análises de correlação revelaram uma correlação positiva significativa entre a serglicina e a troponina (correlação de postos de Spearman: 0,419; p<0,001) e entre a serglicina e a proteína C-reativa ultrassensível (correlação de postos de Spearman: 0,336; p<0,001). A análise de regressão logística multivariada demonstrou que os níveis séricos de serglicina apresentaram-se independentemente associados com IAMCSST. Usando um nível de corte de 80,47 μg/L, o nível de serglicina foi preditor da presença de IAMCSST com uma sensibilidade de 75,7% e especificidade de 68,4%. Conclusão: Os níveis séricos de serglicina apresentaram-se significativamente maiores no grupo IAMCSST do que no grupo controle. Os níveis de serglicina sérica mostraram-se positivamente correlacionados com os níveis de proteína C-reativa ultrassensível e troponina.


Abstract Background: It is suggested that serglycin has important functions in fibrin stabilization and inflammation but there is limited information on its clinical value for atherosclerotic heart disease. Objective: The purpose of this study is to find out serum serglycin levels in acute myocardial infarction patients and in the control group individuals; and to investigate the association between serglycin levels with inflammation markers and infarct size markers. Methods: The study population consisted of 75 patients with ST-segment elevation myocardial infarction (STEMI) and 57 patients with normal coronary arteries (NCA) (control group). Patient characteristics, serum serglycin levels, high-sensitivity C-reactive protein (hs-CRP) levels, peak troponin T levels and other biochemical parameters were recorded. A p value <0.05 was considered statistically significant. Results: The control group consisted of individuals who are younger and smoke less than those of the STEMI group. The number of females in the control group was higher than in the STEMI group. Serum serglycin levels were significantly higher in the STEMI group than in control group (102.81±39.42 vs. 57.13±32.25, p<0.001). Correlation analyses revealed a significant positive correlation between serglycin and troponin (Spearman's Rho: 0.419; p<0.001) and between serglycin and hs CRP (Spearman's Rho: 0.336; p<0.001). Multivariate logistic regression analysis demonstrated that serum serglycin levels were independently associated with STEMI. Using a cutoff level of 80,47 μg/L, the serglycin level predicted the presence of STEMI with a sensitivity of 75.7% and specificity of 68.4%. Conclusion: Serum serglycin levels were significantly higher in the STEMI group than in the control group. Serum serglycin levels were positively correlated with both hs CRP levels and troponin levels.


Assuntos
Humanos , Feminino , Intervenção Coronária Percutânea , Infarto do Miocárdio com Supradesnível do Segmento ST , Infarto do Miocárdio , Proteoglicanas , Biomarcadores , Proteínas de Transporte Vesicular
5.
Braz. oral res. (Online) ; 35: e005, 2021. tab, graf
Artigo em Inglês | LILACS, BBO - Odontologia | ID: biblio-1132742

RESUMO

Abstract: Endocan, a 50 kDa soluble proteoglycan, also called endothelial cell-specific molecule-1 (ESM-1), is involved in many major cellular activities and has been reported to be overexpressed in inflammatory conditions. This study aims to determine ESM-1 levels in gingival crevicular fluid (GCF) samples from individuals with periodontitis to determine the correlation between the levels of lymphocyte-function-associated antigen-1 (LFA-1), intercellular adhesion molecule-1 (ICAM-1), and clinical findings of periodontitis. This study enrolled 27 individuals diagnosed with Stage III-Grade C generalized periodontitis and 16 individuals as healthy controls. Bleeding on probing (BOP), probing pocket depth (PPD), and clinical attachment loss (CAL) were calculated. Enzyme-linked immunosorbent assay (ELISA) test was used for detecting the levels of ESM-1, ICAM-1, and LFA-1 in GCF samples. PPD, BOP, CAL, and GCF volumes were significantly increased in patients with periodontitis in comparison to the control group (p < 0.001). The total amount of ESM-1, ICAM-1, and LFA-1 levels in GCF were increased in the periodontitis group (p < 0.001). ESM-1 level correlated with PPD, BOP, and CAL (p < 0.05). ICAM-1 level correlated with BOP and CAL (p < 0.05). LFA-1 level correlated with PPD and CAL (p < 0.05). Our data indicate that ESM-1, ICAM-1, and LFA-1 levels are increased in GCF of patients with periodontitis. These molecules could be associated with the pathogenesis and progression of periodontal disease.


Assuntos
Humanos , Periodontite , Periodontite Crônica , Proteoglicanas , Ensaio de Imunoadsorção Enzimática , Antígeno-1 Associado à Função Linfocitária , Líquido do Sulco Gengival , Molécula 1 de Adesão Intercelular , Proteínas de Neoplasias
6.
J. appl. oral sci ; 28: e20190558, 2020. graf
Artigo em Inglês | LILACS, BBO - Odontologia | ID: biblio-1101249

RESUMO

Abstract Objective Ameloblastoma is a representative odontogenic tumor comprising several characteristic invasive forms, and its pathophysiology has not been sufficiently elucidated. A stable animal experimental model using immortalized cell lines is crucial to explain the factors causing differences among the subtypes of ameloblastoma, but this model has not yet been disclosed. In this study, a novel animal experimental model has been established, using immortalized human ameloblastoma-derived cell lines. Methodology Ameloblastoma cells suspended in Matrigel were subcutaneously transplanted into the heads of immunodeficient mice. Two immortalized human ameloblastoma cell lines were used: AM-1 cells derived from the plexiform type and AM-3 cells derived from the follicular type. The tissues were evaluated histologically 30, 60, and 90 days after transplantation. Results Tumor masses formed in all transplanted mice. In addition, the tumors formed in each group transplanted with different ameloblastoma cells were histologically distinct: the tumors in the group transplanted with AM-1 cells were similar to the plexiform type, and those in the group transplanted with AM-3-cells were similar to the follicular type. Conclusions A novel, stable animal experimental model of ameloblastoma was established using two cell lines derived from different subtypes of the tumor. This model can help clarify its pathophysiology and hasten the development of new ameloblastoma treatment strategies.


Assuntos
Animais , Feminino , Camundongos , Ameloblastoma/patologia , Modelos Animais de Doenças , Neoplasias Experimentais/patologia , Proteoglicanas , Fatores de Tempo , Imuno-Histoquímica , Células Cultivadas , Reprodutibilidade dos Testes , Colágeno , Laminina , Linhagem Celular Tumoral , Proteínas de Fluorescência Verde/análise , Combinação de Medicamentos
7.
Horiz. méd. (Impresa) ; 19(4): 84-92, Dic. 2019. tab, ilus
Artigo em Espanhol | LILACS, LIPECS | ID: biblio-1048876

RESUMO

El glicocálix endotelial es una estructura sin forma definida que recubre la capa luminal del endotelio vascular y que está constituido, principalmente, por tres elementos: proteoglicanos, glucosaminoglicanos y glicoproteínas. Cumple distintas funciones, como regular la permeabilidad vascular a las moléculas y líquidos, la transducción de las fuerzas mecánicas de tensión y las cascadas de fibrinólisis y coagulación vascular; además, protege de la adhesión leucocitaria, plaquetaria y de patógenos. Los determinantes de lesión del glicocálix pueden ser de varios tipos, por ejemplo, incremento las fuerzas de tensión, especies reactivas de oxígeno (O2), aumento, a nivel plasmático, de sustancias como el sodio (hipernatremia), glucosa (hiperglicemia) y colesterol (hipercolesterolemia), y las moléculas proinflamatorias. Cualquiera de las noxas citadas, individualmente o combinadas, lesionan el glicocálix y la disfunción resultante se expresará clínicamente como disfunción endotelial, aumento de la permeabilidad vascular, paso de lipoproteínas al subendotelio, activación de la coagulación o aumento de la adhesión de plaquetas y leucocitos al endotelio.


Endothelial glycocalyx is an undefined structure covering the luminal layer of the vascular endothelium and consisting mainly of three elements: proteoglycans, glycosaminoglycans and glycoproteins. It has different functions, such as the regulation of vascular permeability to liquids and molecules; transduction of the mechanical forces of vascular tension; regulation of coagulation and fibrinolysis cascades; and protection of leukocyte, platelet and pathogen adhesion. The determinants of a glycocalyx lesion can be of several types­e.g., increased tensile forces; reactive oxygen (O2) species; increased plasma level of substances such as sodium (hypernatremia), glucose (hyperglycemia) and cholesterol (hypercholesterolemia); and pro-inflammatory molecules. Any of the above-mentioned noxas, alone or combined, injure the glycocalyx. Its dysfunction will be clinically expressed as endothelial dysfunction, increased vascular permeability, filtration of lipoproteins to the subendothelium, activation of coagulation, or increased adhesion of leukocytes and platelets to the endothelium.


Assuntos
Humanos , Glicocálix , Proteoglicanas , Endotélio
8.
Braz. oral res. (Online) ; 33: e059, 2019. graf
Artigo em Inglês | LILACS | ID: biblio-1039303

RESUMO

Abstract We recently demonstrated that a co-culture system of human umbilical vein endothelial cells (HUVECs) and human dental pulp stem cells (hDPSCs) could enhance angiogenesis ability in vitro. However, whether tumor necrosis factor α (TNF-α) could promote blood vessel formation during pulp regeneration remained unknown. The aim of this study was to investigate the effects of TNF-α on the formation of endothelial tubules and vascular networks in a co-culture system of hDPSCs and HUVECs. hDPSCs were co-cultured with HUVECs at a ratio of 1:5. The Matrigel assay was performed to detect the total tubule branching lengths and numbers of branches, and the Cell-Counting Kit 8 assay was performed to examine the effect of TNF-α on cell proliferation. Real-time polymerase chain reactions and western blot were used to detect vascular endothelial growth factor (VEGF) mRNA and protein expression. The Matrigel assay showed significantly greater total branching lengths and numbers of branches formed in the experimental groups treated with different concentrations of TNF-α compared with the control group. The decomposition times of the tubule structures were also significantly prolonged (P < 0.05). Treatment with 50 ng/ml TNF-α did not significantly change the proliferation of co-cultured cells, but it significantly increased the VEGF mRNA and protein expression levels (p < 0.05). In addition, the migration abilities of HUVECs and hDPSCs increased after co-culture with TNF-α (p < 0.05). TNF-α enhanced angiogenic ability in vitro in the co-culture system of hDPSCs and HUVECs.


Assuntos
Humanos , Adolescente , Adulto , Adulto Jovem , Fator de Necrose Tumoral alfa/farmacologia , Neovascularização Fisiológica/efeitos dos fármacos , Polpa Dentária/citologia , Polpa Dentária/efeitos dos fármacos , Indutores da Angiogênese/farmacologia , Células Endoteliais da Veia Umbilical Humana/efeitos dos fármacos , Proteoglicanas , Valores de Referência , Fatores de Tempo , Contagem de Células , Células Cultivadas , Western Blotting , Reprodutibilidade dos Testes , Colágeno , Laminina , Neovascularização Fisiológica/fisiologia , Polpa Dentária/fisiologia , Fator A de Crescimento do Endotélio Vascular/análise , Fator A de Crescimento do Endotélio Vascular/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Proliferação de Células/fisiologia , Combinação de Medicamentos , Ensaios de Migração Celular , Células Endoteliais da Veia Umbilical Humana/fisiologia , Reação em Cadeia da Polimerase em Tempo Real
9.
Int. j. morphol ; 37(1): 54-58, 2019. graf
Artigo em Inglês | LILACS | ID: biblio-990004

RESUMO

SUMMARY: Matrigel is a basement membrane matrix extracted from the EHS mouse tumor containing extracellular matrix protein, its main components are laminin, type IV collagen, nestin, heparin sulfate, growth factor and matrix metalloproteinase.At room temperature, Matrigel polymerized to form a three dimensional matrix with biological activity. It can simulate the structure, composition, physical properties and functions of the cell basement membrane in vivo, which is beneficial to the culture and differentiation of the cells in vitro, and can be used for the study of cell morphology, biochemical function, migration, infection and gene expression. In this study, Matrigel three-dimensional culture model of bone marrow mesenchymal stem cells(BMSCs) was established, and its morphology, proliferation and survival were observed. BMSCs were isolated and cultured with whole bone marrow adherence method. The Second generation BMSCs with good growth condition were selected and mixed with Matrigel to form cell gel complexes. The morphology and proliferation of mesenchymal stem cells were observed by phase contrast microscope and HE staining,Live/Dead staining was used to evaluate the cell activity.Phase contrast microscopy showed that BMSCs were reticulated in Matrigel and proliferated well, After 7 days, the matrix gel gradually became soft and collapsed, a few cell reticular crosslinking growth was seen at 14 days; HE staining showed that the cytoplasm of the cells was larger on the fourth day and the cells were elongated and cross-linked on the seventh day; Live/dead staining showed that most cells showed green fluorescence with the prolongation of culture time, on the first, 4 and 7 days, the activity of bone marrow mesenchymal stem cells in Matrigel gradually increased, and the percentages were 92.57 %, 95.54 % and 97.37 %, respectively. Matrigel three-dimensional culture system can maintain the morphology, function and proliferation ability of bone marrow mesenchymal stem cells.


RESUMEN: Matrigel es una matriz de membrana basal extraída del tumor de ratón EHS que contiene proteína de matriz extracelular. Los componentes principales son laminina, el colágeno tipo IV, nestina, sulfato de heparina, factor de crecimiento y metaloproteinasa de matriz. A temperatura ambiente, Matrigel se polimerizó para formar una matriz tridimensional. Es posible simular la estructura, la composición, las propiedades físicas y las funciones de la membrana basal celular in vivo, lo que es beneficioso para el cultivo y la diferenciación de las células in vitro, y se puede utilizar para el estudio de la morfología celular, la función bioquímica, la migración, infección y expresión génica. En este estudio, se estableció el modelo de cultivo tridimensional Matrigel de células madre mesenquimales de médula ósea (BMSC), y se observó su morfología, proliferación y supervivencia. Las BMSC fueron aisladas y cultivadas con el método de adherencia de la médula ósea completa. Se seleccionaron las BMSC de segunda generación con buenas condiciones de crecimiento y se mezclaron con Matrigel para formar complejos de gel de células. La morfología y la proliferación de las células madre mesenquimales se observaron con microscopio de contraste de fase y se tiñó con Hematoxilina-Eosina (HE); para evaluar la actividad celular se usó la tinción Live/Dead. La microscopía de contraste mostró que las BMSC se reticularon en Matrigel y proliferaron bien. Después de 7 días, se observó que el gel de matriz gradualmente se volvió blando y colapsó, y se visualizó un cruce transversal de algunas células reticulares a los 14 días. La tinción mostró que la mayoría de las células mostraron una fluorescencia verde con la prolongación del tiempo de cultivo; en los primeros 4 y 7 días, la actividad de las células madre mesenquimales de la médula ósea en Matrigel aumentó gradualmente y los porcentajes fueron de 92,57 %, 95,54 % y 97,37 %, respectivamente. El sistema de cultivo tridimensional de Matrigel puede mantener la morfología, la función y la capacidad de proliferación de las células madre mesenquimales de la médula ósea.


Assuntos
Animais , Cães , Proteoglicanas/química , Colágeno/química , Laminina/química , Técnicas de Cultura de Células/métodos , Células-Tronco Mesenquimais/citologia , Engenharia Tecidual , Combinação de Medicamentos
10.
Rev. bras. ginecol. obstet ; 40(10): 593-598, Oct. 2018. tab, graf
Artigo em Inglês | LILACS | ID: biblio-977779

RESUMO

Abstract Objective To analyze endocan-1, a biomarker of vascular endothelial related pathologies, and the placental growth factor (PlGF), an angiogenic factor and a placental dysfunction marker in patients with preeclampsia (PE). Methods Case-control study conducted at Hospital São Lucas, in the city of Porto Alegre, Brazil. Endocan-1 and PlGF levels were quantified in the maternal plasma using the MagPlexTH-C microsphere system (MAGPIX System, Luminex, Austin, Texas, US) and evaluated through analysis of covariance (ANCOVA) and adjusted by body mass index (BMI), gestational age and maternal age. To estimate the difference between the groups, the mean ratio (MR) and the 95% confidence interval (95%CI) were calculated. The Pearson correlation test was used to establish any association between endocan-1 and PlGF levels. The null hypothesis was rejected when p < 0.05. Results The group of patients was composed by normotensive (n = 67) patients and patients with PE (n = 50). A negative correlation between endocan-1 and the PlGF was noted in the entire normotensive group (linear correlation coefficient [r] = -0.605; p < 0.001), as well as in the PE group (r = -0.545; p < 0.001). Conclusion Endocan-1 levels are increased in patients with PE, and are inversely correlated with PlGF levels. We suggest that it is important to analyze angiogenic and proinflammatory molecules concomitantly in women with PE to better understand the pathophysiology of the disease. Both molecules are strong candidates for PE biomarkers, and future studies will examine any mechanisms connecting these factors in PE.


Resumo Objetivo Analisar o endocan-1, umbiomarcador de patologias vasculares endoteliais, e o fator de crescimento placentário (FCPl), um fator angiogênico, marcador de disfunção placentária em pacientes com pré-eclâmpsia (PE). Métodos Estudo de caso-controle realizado no Hospital São Lucas, em Porto Alegre. Os níveis de endocan-1 e FCPl foram quantificados no plasma materno usando o sistema de microesferas MagPlexTH-C (MAGPIX System, Luminex, Austin, Texas, US) e analisados por análise de covariância (ANCOVA) e ajustados por índice de massa corporal (IMC), idade gestacional e idade materna. Para calcular a diferença entre os grupos, utilizou-se a razão dasmédias (RM) e o intervalo de confiança de 95% (IC95%). O teste de correlação de Pearson foi utilizado para estabelecer a associação entre os níveis de endocan-1 e FCPl. A hipótese nula foi rejeitada quando p < 0,05. Resultados O grupo de pacientes foi composto por pacientes normotensas (n = 67) e pacientes com PE (n = 50). Uma correlação negativa entre o endocan-1 e o FCPl foi observada emtodo o grupo de pacientes normotensas (coeficiente de correlação linear [r] = -0,605; p < 0,001), bem como no grupo com PE (r = -0,545; p < 0,001). Conclusão Os níveis de endocan-1 estão aumentados em pacientes com PE e inversamente correlacionados com os níveis de FCPl. Sugerimos a importância de analisar moléculas angiogênicas e pró-inflamatórias concomitantemente em mulheres com PE para compreender melhor a fisiopatologia da doença. Ambas as moléculas são fortes candidatos a serem considerados biomarcadores de PE, e trabalhos futuros poderão avaliar quaisquer mecanismos que liguem esses fatores na PE.


Assuntos
Humanos , Feminino , Adulto , Pré-Eclâmpsia/sangue , Proteoglicanas/sangue , Fator de Crescimento Placentário/sangue , Proteínas de Neoplasias/sangue , Biomarcadores/sangue , Estudos de Casos e Controles , Correlação de Dados
11.
Biol. Res ; 51: 15, 2018. tab, graf
Artigo em Inglês | LILACS | ID: biblio-950901

RESUMO

BACKGROUND: Translational research to develop pharmaceutical and surgical treatments for pterygium requires a reliable and easy to produce animal model. Extracellular matrix and fibroblast are important components of pterygium. The aim of this study was to analyze the effect of the subconjunctival injection of fibroblast cells (NIH3T3 cell line) and exogenous extracellular matrix in rabbits in producing a pterygium-like lesion. METHODS: Six 3-month-old white New Zealand rabbits were injected with 20,000 NIH3T3 cells and 5 µL of Matrigel in the right conjunctiva, and with only 5 µL of Matrigel in the left conjunctiva. The eyes were photographed under a magnification of 16× using a 12-megapixel digital camera attached to the microscope on day 1,3 and 7. Conjunctival vascularization was measured by analyzing images to measure red pixel saturation. Area of corneal and conjunctival fibrovascular tissue formation on the site of injection was assessed by analyzing the images on day 3 and 7 using area measurement software. Histopathologic characteristics were determined in the rabbit tissues and compared with a human primary pterygium. RESULTS: The two treatments promoted growth of conjunctival fibrovascular tissue at day 7. The red pixel saturation and area of fibrovascular tissue developed was significantly higher in right eyes (p < 0.05). Tissues from both treatments showed neovascularization in lesser extent to that observed in human pterygium. Acanthosis, stromal inflammation, and edema were found in tissues of both treatments. No elastosis was found in either treatment. CONCLUSIONS: Matrigel alone or in combination with NIH3T3 cells injected into the rabbits' conjunctiva can promote tissue growth with characteristics of human pterygium, including neovascularization, acanthosis, stromal inflammation, and edema. The combination of Matrigel with NIH3T3 cells seems to have an additive effect on the size and redness of the pterygium-like tissue developed.


Assuntos
Animais , Camundongos , Coelhos , Proteoglicanas/efeitos adversos , Pterígio/etiologia , Colágeno/efeitos adversos , Laminina/efeitos adversos , Modelos Animais de Doenças , Matriz Extracelular/transplante , Fibroblastos/transplante , Proteoglicanas/administração & dosagem , Pterígio/patologia , Colágeno/administração & dosagem , Laminina/administração & dosagem , Células NIH 3T3 , Combinação de Medicamentos
12.
Pesqui. vet. bras ; 36(7): 611-616, jul. 2016. ilus, graf
Artigo em Português | LILACS, VETINDEX | ID: lil-794760

RESUMO

Atualmente, a cápsula anterior e o epitélio da lente tem sido cada vez mais estudados, com o intuito de reduzir as possíveis complicações do pós-operatório da remoção da catarata, tal como a opacidade da cápsula posterior, alteração ocasionada principalmente pela diferenciação e migração das células do epitélio lenticular para a cápsula posterior da lente. O objetivo deste estudo foi analisar a composição molecular da cápsula anterior da lente pela técnica histoquímica de PAS (avaliação de proteoglicanos) e picrosirius red (avaliação de colágeno IV), em cães idosos com catarata diabética e não diabética do tipo hipermadura, submetidos ao uso ou não de azul de tripano a 0,1 % durante a facoemulsificação. Vinte e sete cães foram estudados, incluindo 21 fêmeas e 6 machos, de 8 a 12 anos de idade (média = 9,6 anos), de diversas raças e divididos em 2 grupos: GC (catarata hipermadura) e GCD (catarata diabética). Os resultados das análises realizadas mostraram que ambas as amostras, tanto as provenientes das cataratas hipermaduras, quanto das diabéticas, apresentam semelhante composição molecular de proteoglicanos e colágeno IV e isto independente da utilização de azul de tripano a 0,1 %. Conclui-se, portanto, que se os resultados obtidos forem decorrentes de alterações provocadas pelo rápido metabolismo da catarata diabética e pela cronicidade da catarata hipermadura sugere-se que o comprometimento da estrutura capsular seja de intensidade equivalente e, por consequência, que isto também possa prejudicar o metabolismo das células do epitélio anterior da lente, diminuindo assim a incidência da opacidade da cápsula posterior de cães com catarata diabética e hipermadura submetidos à facoemulsificação.(AU)


Nowadays, the anterior lens capsule and its epithelium have been being frequently studied aiming to reduce the incidence of posterior lens capsule opacity, a complication that frequently occurs after surgical removal of cataracts, due to epithelium cells differentiation and migration to the posterior pole. The objective of this study was to evaluate by histochemistry (PAS and picrosirius red) analysis two important molecular components of the anterior lens capsule (proteoglycans and type IV collagen) in older diabetic and non-diabetic dogs, with diabetic and hypermature cataracts, after phacoemulsification surgery utilizing 0.1% trypan blue or not. Twenty seven dogs, including 21 female and 6 male dogs, with ages varying from 8 to 12 years old (mean = 9.6 yo) of different breeds were studied. The animals were divided into 2 groups: GC (hypermature cataracts) and GCD (diabetic cataracts). Results showed that, besides their different pathophysiologies, both types of capsules studied (diabetic and hypermature ones) presented the same molecular composition of proteoglycans and type IV collagen, since no statistical significant differences were observed. In addition, 0.1% trypan blue was not capable to induce any other evident alteration for the samples. In conclusion, our findings suggest that, if the results consist in alteration induced by the aggressive metabolism of the diabetic cataract or the chronicity of the hypermature one, it is of the same intensity and independent of the use of 0.1% trypan blue. It is also possible to suggest that this alteration must be capable to compromise lens epithelium cell metabolism, which should probably favour future lens posterior capsule studies.(AU)


Assuntos
Animais , Cães , Cápsula Anterior do Cristalino/patologia , Catarata/complicações , Catarata/veterinária , Diabetes Mellitus/veterinária , Cápsula Posterior do Cristalino/cirurgia , Colágeno Tipo IV/análise , Facoemulsificação/veterinária , Proteoglicanas/análise , Azul Tripano
13.
Pesqui. vet. bras ; 36(7): l6161-616, jul. 2016. tab, graf, ilus
Artigo em Português | LILACS, VETINDEX | ID: biblio-1487599

RESUMO

Atualmente, a cápsula anterior e o epitélio da lente tem sido cada vez mais estudados, com o intuito de reduzir as possíveis complicações do pós-operatório da remoção da catarata, tal como a opacidade da cápsula posterior, alteração ocasionada principalmente pela diferenciação e migração das células do epitélio lenticular para a cápsula posterior da lente. O objetivo deste estudo foi analisar a composição molecular da cápsula anterior da lente pela técnica histoquímica de PAS (avaliação de proteoglicanos) e picrosirius red (avaliação de colágeno IV), em cães idosos com catarata diabética e não diabética do tipo hipermadura, submetidos ao uso ou não de azul de tripano a 0,1 % durante a facoemulsificação. Vinte e sete cães foram estudados, incluindo 21 fêmeas e 6 machos, de 8 a 12 anos de idade (média = 9,6 anos), de diversas raças e divididos em 2 grupos: GC (catarata hipermadura) e GCD (catarata diabética). Os resultados das análises realizadas mostraram que ambas as amostras, tanto as provenientes das cataratas hipermaduras, quanto das diabéticas, apresentam semelhante composição molecular de proteoglicanos e colágeno IV e isto independente da utilização de azul de tripano a 0,1 %. Conclui-se, portanto, que se os resultados obtidos forem decorrentes de alterações provocadas pelo rápido metabolismo da catarata diabética e pela cronicidade da catarata hipermadura sugere-se que o comprometimento da estrutura capsular seja de intensidade equivalente e, por consequência, que isto também possa prejudicar o metabolismo das células do epitélio anterior da lente, diminuindo assim a incidência da opacidade da cápsula posterior de cães com catarata diabética e hipermadura submetidos à facoemulsificação.


Nowadays, the anterior lens capsule and its epithelium have been being frequently studied aiming to reduce the incidence of posterior lens capsule opacity, a complication that frequently occurs after surgical removal of cataracts, due to epithelium cells differentiation and migration to the posterior pole. The objective of this study was to evaluate by histochemistry (PAS and picrosirius red) analysis two important molecular components of the anterior lens capsule (proteoglycans and type IV collagen) in older diabetic and non-diabetic dogs, with diabetic and hypermature cataracts, after phacoemulsification surgery utilizing 0.1% trypan blue or not. Twenty seven dogs, including 21 female and 6 male dogs, with ages varying from 8 to 12 years old (mean = 9.6 yo) of different breeds were studied. The animals were divided into 2 groups: GC (hypermature cataracts) and GCD (diabetic cataracts). Results showed that, besides their different pathophysiologies, both types of capsules studied (diabetic and hypermature ones) presented the same molecular composition of proteoglycans and type IV collagen, since no statistical significant differences were observed. In addition, 0.1% trypan blue was not capable to induce any other evident alteration for the samples. In conclusion, our findings suggest that, if the results consist in alteration induced by the aggressive metabolism of the diabetic cataract or the chronicity of the hypermature one, it is of the same intensity and independent of the use of 0.1% trypan blue. It is also possible to suggest that this alteration must be capable to compromise lens epithelium cell metabolism, which should probably favour future lens posterior capsule studies.


Assuntos
Animais , Cães , Catarata/complicações , Catarata/veterinária , Cápsula Anterior do Cristalino/patologia , Cápsula Posterior do Cristalino/cirurgia , Diabetes Mellitus/veterinária , Azul Tripano , Colágeno Tipo IV/análise , Facoemulsificação/veterinária , Proteoglicanas/análise
14.
Int. j. morphol ; 34(2): 692-698, June 2016. ilus
Artigo em Inglês | LILACS | ID: lil-787056

RESUMO

MatrigelBD is a hydrogel scaffold with three-dimensional intercrossed networks of hydrophilic polymers with high water content. Human gingival tissue might represent a better source of MSCs, allowing these cells to be easily obtained in a relatively non-invasive way. The objective of this study was to evaluate the biocompatibility of MatrigelBD with GMSCs in vitro. Gingival connective tissue samples were obtained from healthy donors. Fresh tissue was minced and cultured during two weeks, after which cells at passage fourth were analyzed for their immune phenotype by flow cytometry. Differentiation into osteogenic, chondrogenic, and adipogenic lineages was induced and evaluated by culture staining. The "construct" was made of MatrigelBD with GMSC. To assess the biocompatibility, an MTT cellular proliferation assay was performed. The differentiation potential of the cells toward the osteogenic, adipogenic, and chondrogenic lineages was analyzed after 21 days of growth in MatrigelBD with induction differentiation media. The MTT analysis showed that MatrigelBD stimulated cell proliferation; the GMSCs maintained the expression of MSC markers. Importantly, the growth of GMSCs within the MatrigelBD did not interfere with the cell differentiation potential. These findings indicate that MatrigelBD is biocompatible with GMSCs, and this matrix improves cell proliferation in vitro.


MatrigelBD es un andamiaje de hidrogel con redes tridimensionales entrecruzadas de polímeros hidrófilos con un alto contenido de agua. El tejido gingival humano podría representar una mejor fuente de MSCs, estas células pueden obtenerse fácilmente de una manera relativamente no invasiva. El objetivo de este estudio fue evaluar la biocompatibilidad de MatrigelBD con GMSCs in vitro. Muestras gingivales de tejido conectivo se obtuvieron de donantes sanos. El tejido se trituró y se cultivó durante dos semanas, y cuando las células se encontraban en el cuarto pasaje se les analizó su fenotipo inmunológico utilizando citometría de flujo. Se indujo la diferenciación hacia los linajes osteogénico, condrogénico y adipogénico, evaluandose con tinciones. El "constructo" se hizo de MatrigelBD con GMSC. Para evaluar la biocompatibilidad, se realizó un ensayo de proliferación celular: MTT. Se analizó el potencial de diferenciación de las células hacia los linajes osteogénico, adipogénico y condrogénico después de 21 días de cultivo en MatrigelBD con medio de diferenciación de inducción. El análisis de MTT mostró que MatrigelBD estimula la proliferación celular; GMSCs mantiene la expresión de marcadores de MSC. Es importante destacar que el crecimiento de GMSCs en MatrigelBD no interfirió con el potencial de diferenciación celular. Estos hallazgos indican que MatrigelBD es biocompatible con GMSCs, y esta matriz mejora la proliferación celular in vitro.


Assuntos
Humanos , Células-Tronco Adultas/citologia , Materiais Biocompatíveis , Gengiva/citologia , Células-Tronco Adultas/fisiologia , Proliferação de Células , Células Cultivadas , Colágeno , Combinação de Medicamentos , Citometria de Fluxo , Imunofenotipagem , Laminina , Teste de Materiais , Proteoglicanas , Regeneração , Tecidos Suporte
15.
Acta ortop. bras ; 24(2): 98-101, Mar.-Apr. 2016. graf
Artigo em Inglês | LILACS | ID: lil-775079

RESUMO

Objetivo: Avaliar e comparar o comportamento dos glicosaminoglicanos(GAGs) na Doença de Dupuytren (DD). Métodos: Trata-se deum estudo experimental com 23 pacientes diagnosticados com DD.Tecidos coletados através de fasciectomia com incisão tipo Brunnerou McCash, foram avaliados por eletroforese para identificação dosGAGs. A quantificação foi realizada por imunofluorescência e dosagemdas proteínas para os diferentes tipos de glicosaminoglicanos.Os resultados coletados foram expressos em porcentagem e avaliadosestatisticamente. Resultados: Foi observado, na corrida eletroforética,aumento significativo dos GAGs em relação ao controle(p<0,05). Na imunofluorescência houve redução (23 vezes) do ácidohialurônico quando comparado ao controle (p<0,0001). Conclusão:Ficou evidenciado pelos resultados o aumento dos GAGs sulfatadosna doença de Dupuytren, principalmente do dermatam sulfato, egrande diminuição do ácido hialurônico na aponeurose palmar dosmesmos pacientes. Nível de Evidência III, Estudo Caso Controle.


Objective: To evaluate and compare the behavior of glycosaminoglycans(GAGs) in Dupuytren disease (DD). Methods: Thisis an experimental study with 23 patients diagnosed with DD.Tissue collected through fasciectomy with incision type Brunneror McCash were evaluated by electrophoresis for identificationof GAGs. The quantification was carried out by immunofluorescenceand dosage of proteins for different types of glycosaminoglycans.The results were expressed in percentage and statisticallyevaluated. Results: A significant increase was observed througheletrophoresis in GAGs, as compared to the control (p<0.05). Immunofluorescenceof hyaluronic acid was reduced (23 times) whencompared to the control (p<0.0001). Conclusion: An increase ofsulfated GAGs in Dupuytren’s disease, mainly dermatan sulfate,was evident from our results, as well as a pronounced decrease ofhyaluronic acid in the palmar aponeurosis from the same patients.Level of Evidence III, Case-Control Study.


Assuntos
Humanos , Contratura de Dupuytren , Eletroforese , Fáscia , Imunofluorescência , Glicosaminoglicanos , Mãos , Ácido Hialurônico , Proteoglicanas
16.
J. appl. oral sci ; 23(1): 79-86, Jan-Feb/2015. tab, graf
Artigo em Inglês | LILACS, BBO - Odontologia | ID: lil-741593

RESUMO

Objective The identification of stem cells (SC) remains challenging. In the human oral mucosal epithelium, these cells are believed to be in the basal layer (stem cell niche), but their exact location is unclear. The aim of this study was to examine the dysplastic oral epithelium for these SC-like proteins in order to assess their diagnostic value as biomarkers complementing the histological grading of dysplasia. Material and Methods Thirty oral epithelial dysplasia (OED), 25 oral lichen planus (OLP), 10 oral hyperkeratosis and 5 normal oral epithelium (OE) were immunohistochemically examined for four SC markers [integrin β1, neuron-glial-2 (NG2), notch 1 (N1) and keratin 15 (K15)]. Results Three of four SC markers were heterogeneously detected in all samples. K15 overexpression in the lower two-thirds of severe OED suggests an expanded SC niche. Integrin β1 distribution pattern was not measurably different between OEDs and control. NG2 was almost negative to absent in all samples examined. N1 expression was weak and highly variable in normal and dysplastic epithelium, making it an unreliable epithelial stem cell marker. Conclusions Present findings suggest that these markers were unable to identify individual epithelial stem cells. Instead, subpopulations of cells, most probably stem cells and transit amplifying cells with stem cell-like properties were identified in the dysplastic oral epithelium. The characteristic expressions of K15 might be of diagnostic value for oral dysplasia and should be investigated further. .


Assuntos
Humanos , Células Epiteliais/metabolismo , Proteínas/metabolismo , Células-Tronco/metabolismo , /análise , Antígenos/análise , Biomarcadores/análise , Células Epiteliais/patologia , Hiperplasia/metabolismo , Imuno-Histoquímica , /análise , Líquen Plano Bucal/metabolismo , Líquen Plano Bucal/patologia , Mucosa Bucal/metabolismo , Mucosa Bucal/patologia , Inclusão em Parafina , Proteoglicanas/análise , Receptor Notch1/análise , Valores de Referência , Índice de Gravidade de Doença , Células-Tronco/patologia
17.
São Paulo; s.n; 2015. [101] p. ilus, tab, graf.
Tese em Português | LILACS | ID: biblio-871516

RESUMO

INTRODUÇÃO: A matriz extracelular no endométrio fornece vasta gama de sinais envolvidos em diferentes processos celulares, tais como morte celular e proliferação. Neste sentido, os glicosaminoglicanos e os proteoglicanos, juntamente com os fatores de crescimento, modulam várias etapas da angiogênese, proliferação celular e remodelação do estroma, o que pode ser importante para o fluxo menstrual regular e a redução dos processos proliferativos. Além disso, são importantes para a adequada interação maternofetal. OBJETIVO: Avaliar a concentração de ácido hialurônico, das enzimas de biossíntese do ácido hialurônico - hialurônico sintases (HAS1, HAS2 e HAS3) e dos pequenos proteoglicanos ricos em leucina (decorim, biglicam, lumicam e fibromodulina) no endométrio de pacientes com síndrome dos ovários policísticos (SOP) e de mulheres eumenorreicas. MÉTODOS: Foram analisadas 20 amostras de endométrio, 10 provenientes de pacientes com SOP e 10 de mulheres com ciclos menstruais regulares na fase proliferativa do ciclo, com idade variando entre 20 e 35 anos, atendidas na Divisão de Clínica Ginecológica do Hospital das Clínicas da FMUSP (HC-FMUSP). A determinação do perfil e da concentração do ácido hialurônico foi efetuada por método bioquímico de ensaio fluorimétrico (ELISA-like). A sua localização no tecido endometrial, assim como as dosagens das enzimas sintases (HAS1, HAS2 e HAS3) e dos pequenos proteoglicanos ricos em leucina (decorim, biglicam, lumicam e fibromodulina e), foi feita por imunoistoquímica e "western blotting". Para a análise dos resultados foi utilizado o teste t de student (p<=0,05). Os cálculos foram realizados com auxílio do programa SPSS versão13 (SPSS, Chicago, IL). RESUTADOS: Houve maior concentração de ácido hialurônico no endométrio de mulheres eumenorreicas na fase proliferativa do ciclo menstrual do que no das com síndrome dos ovários policísticos. Com relação às sintases do ácido hialurônico, observou-se maior reatividade de HAS1 e HAS2 e ...


INTRODUCTION: Endometrium extracellular matrix provides wide range of signals at different cellular levels like cell death and proliferation. In this regard, glycosaminoglycans and proteoglycans, along with growth factors, modulate various stages of angiogenesis, cell proliferation and remodeling of the stroma, which can be important for regulating menses and reducing the proliferative processes. Additionally, it is important for proper fetal-maternal interactions. OBJECTIVE: Evaluate hyaluronic acid concentration, the enzymes of hyaluronic acid synthases (HAS1, HAS2 and HAS3) and small leucine-rich proteoglycans (decorin, lumican, fibromodulim and biglycan) in the endometrium of patients with polycystic ovary syndrome (PCOS) and eumenorrheic women. METHODS: A total of 20 endometrial samples from 10 patients with PCOS and 10 women with regular menstrual cycles in the proliferative phase, with ages ranging between 20 and 35 years, attended at Gynecology Division of Clinical Hospital of the FMUSP (HC-USP). Profile determination and the concentration of hyaluronic acid were performed by biochemical method of fluorimetric assay (ELISA-like). Its location in the endometrial tissue as well as the dosage of enzymes synthases (HAS1, HAS2 and HAS3) and small leucine-rich proteoglycans (decorin, lumican, fibromodulim and biglycan) was done by immunohistochemistry and western blotting. To analyze the results Student t test was used (p < 0.05). The calculations were performed with software SPSS version 13. RESULTS: A higher concentration of hyaluronic acid in eumenorrheic women endometrium in proliferative phase when compared with polycystic ovary syndrome. Regarding hyaluronic acid synthases, there was a higher HAS1 and HAS2 reactivity and lower HAS3 reactivity in the PCOS endometrium compared to women with regular menstrual cycles in the proliferative phase. Decorin and lumican showed higher immunoreactivity in PCOS endometrium. CONCLUSIONS: PCOS patients have a lower...


Assuntos
Humanos , Feminino , Adulto Jovem , Adulto , Endométrio , Glicosaminoglicanos , Ácido Hialurônico , Síndrome do Ovário Policístico , Proteoglicanas
18.
Hist. ciênc. saúde-Manguinhos ; 21(4): 1131-1149, Oct-Dec/2014.
Artigo em Português | LILACS | ID: lil-732507

RESUMO

Associadas a projetos de construção da ideia de nação, no Brasil monárquico foram encaminhadas, pelo governo imperial, algumas iniciativas no sentido de materializar propostas de educação física. O objetivo deste artigo é investigar os sentidos e significados atribuídos ao tema na legislação e nos relatórios anuais do Ministério dos Negócios do Império (1831-1889), com especial interesse pelo que se refere ao Rio de Janeiro. A abordagem do assunto nas fontes pesquisadas evidencia que as visões sobre a educação física se deram a partir de uma matriz que articulava concepções de moral, saúde e civilização, tendo que lidar com as condições concretas de um país recém-independente, periférico e com uma burocracia ainda em formação.


In association with its nation building projects, the imperial government in Brazil under monarchic rule took some concrete actions based on proposals for physical education. The aim of this article is to investigate the meanings and significations attributed to this subject in the legislation and the annual reports issued by the Ministry of Business of the Empire (1831-1889), giving special attention to Rio de Janeiro. The approach to the subject in the sources researched demonstrates that the views of physical education took shape through a web of ideas that associated moral, health and civilization conceptions, in a bid to deal with the concrete circumstances of a newly independent peripheral nation with a bureaucratic structure in the process of formation.


Assuntos
Animais , Feminino , Camundongos , Carcinoma Pulmonar de Lewis/secundário , Catepsina B/antagonistas & inibidores , Catepsinas/antagonistas & inibidores , Endopeptidases , Leucina/análogos & derivados , Neoplasias Hepáticas Experimentais/prevenção & controle , Neoplasias Hepáticas Experimentais/secundário , Invasividade Neoplásica/prevenção & controle , Catepsina L , Colágeno , Cisteína Endopeptidases , Carcinoma Pulmonar de Lewis/metabolismo , Combinação de Medicamentos , Ensaios de Seleção de Medicamentos Antitumorais , Laminina , Leucina/farmacocinética , Leucina/farmacologia , Neoplasias Hepáticas Experimentais/enzimologia , Proteoglicanas , Células Tumorais Cultivadas
19.
J. bras. nefrol ; 36(4): 542-544, Oct-Dec/2014. graf
Artigo em Inglês | LILACS | ID: lil-731142

RESUMO

Introduction: When faced with violet, purple or purplish-blue urine, clinicians should consider urinary tract infection in their differential diagnosis. Case report: A 60-year-old woman with end-stage kidney disease and non-adherence to renal replacement therapy was admitted to our hospital for placement of hemodialysis catheter. During her hospitalization she had purple urine, and purple urine bag syndrome (PUBS) was diagnosed. She was effectively treated with antibiotics and her urine returned to a dark yellow color. Discussion: Although this condition is often easily treated, diagnosing PUBS in chronic renal patients probably means an increased serum concentration of indoxyl sulfate, metabolite that is involved in the progression of both CKD and cardiovascular disease. Conclusion: Hence, in the context of our renal patients, perhaps PUBS is not as benign as supposed. .


Assuntos
Animais , Ratos , Isoenzimas/metabolismo , Glicoproteínas de Membrana/metabolismo , Proteína Quinase C/metabolismo , Proteoglicanas/metabolismo , Sequência de Aminoácidos , Dados de Sequência Molecular , Fosforilação , Proteína Quinase C-alfa , Proteína Quinase C-delta
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