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1.
Arch Gynecol Obstet ; 2024 Jun 19.
Artigo em Inglês | MEDLINE | ID: mdl-38898186

RESUMO

PURPOSE: Tumors affecting the female genital tract and their treatments have the potential to induce adverse modifications in vaginal health and impact personal aspects of patient's lives. Vulvovaginal atrophy is one of the morphological changes observed in individuals with a history of gynecological cancer, influenced both by the biological environment of tumors and the main therapeutic modalities employed. Therefore, the purpose of this study was to identify approaches to treat vulvovaginal atrophy while assessing the impact on the emotional and sexual health of women diagnosed with gynecological cancers. METHODS: To achieve this goal, a systematic review was conducted following the methodological guidelines outlined by the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). The databases used for literature research were PubMed and Web of Science. RESULTS: Initially, 886 articles were obtained. After eliminating duplicates and applying inclusion/exclusion criteria, seven articles were selected for analysis. The period of highest publication activity spanned from 2017 to 2020, with the majority conducted in Italy. Five treatment modalities were identified and categorized as vaginal suppository, oral medication, surgical procedure, CO2 laser therapy, and vaginal dilator. Twenty-four outcomes related to vaginal health and 30 outcomes related to overall, sexual, and emotional quality of life were analyzed. CONCLUSION: In general, all interventions demonstrated the ability to improve vaginal health or, at the very least, the sexual health of patients. Thus, despite limitations, all treatments have the potential to address vulvovaginal atrophy in patients with a history of gynecological cancer.

2.
Mediators Inflamm ; 2022: 7641357, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35069009

RESUMO

The objective of this study was to evaluate the histopathological changes caused by infection with the Colombian strain of Trypanosoma cruzi (T. cruzi) in the acute and chronic experimental phases. C57Bl/6 mice were infected with 1000 trypomastigote forms of the Colombian strain of T. cruzi. After 30 days (acute phase) and 90 days (early chronic phase) of infection, the animals were euthanized, and the colon was collected and divided into two parts: proximal and distal. The distal portion was used for histopathological analysis, whereas the proximal portion was used for quantification of pro- and anti-inflammatory cytokines. In addition, the weight of the animals and parasitemia were assessed. The infection induced gradual weight loss in the animals. In addition, the infection induced an increase in interferon gamma (IFNγ) and tumor necrosis factor-alpha (TNF-α) in the intestine in the acute phase, in which this increase continued until the early chronic phase. The same was observed in relation to the presence of intestinal inflammatory infiltrates. In relation to interleukin (IL)-10, there was an increase only in the early chronic phase. The Colombian strain infection was also able to induce neuronal loss in the myenteric plexus and deposition of the collagen fibers during the acute phase. The Colombian strain of T. cruzi is capable of causing histopathological changes in the intestine of infected mice, especially in inducing neuronal destructions. Thus, this strain can also be used to study the intestinal form of Chagas disease in experimental models.


Assuntos
Doença de Chagas , Trypanosoma cruzi , Animais , Colágeno , Colômbia , Intestinos/patologia , Camundongos , Camundongos Endogâmicos C57BL
3.
BMC Nephrol ; 21(1): 308, 2020 07 28.
Artigo em Inglês | MEDLINE | ID: mdl-32723296

RESUMO

BACKGROUND: Diabetic nephropathy (DN) is the leading cause of end-stage renal disease worldwide. Inflammatory mediators have been implicated in the pathogenesis of DN, thus considered an inflammatory disease. However, further studies are required to assess the renal damage caused by the action of these molecules. Therefore, the objective of this study was to analyze the expression of cytokines and chemokines in renal biopsies from patients with DN and to correlate it with interstitial inflammation and decreased renal function. METHODS: Forty-four native renal biopsies from patients with DN and 23 control cases were selected. In situ expression of eotaxin, MIP-1α (macrophage inflammatory protein-1α), IL-8 (interleukin-8), IL-4, IL-10, TNF-α (tumor necrosis factor-α), TNFR1 (tumor necrosis factor receptor-1), IL-1ß, and IL-6 were evaluated by immunohistochemistry. RESULTS: The DN group showed a significant increase in IL-6 (p < 0.0001), IL-1ß (p < 0.0001), IL-4 (p < 0.0001) and eotaxin (p = 0.0012) expression, and a decrease in TNFR1 (p = 0.0107) and IL-8 (p = 0.0262) expression compared to the control group. However, there were no significant differences in IL-10 (p = 0.4951), TNF-α (p = 0.7534), and MIP-1α (p = 0.3816) expression among groups. Regarding interstitial inflammation, there was a significant increase in IL-6 in scores 0 and 1 compared to score 2 (p = 0.0035), in IL-10 in score 2 compared to score 0 (p = 0.0479), and in eotaxin in score 2 compared to scores 0 and 1 (p < 0.0001), whereas IL-8 (p = 0.0513) and MIP-1α (p = 0.1801) showed no significant differences. There was a tendency for negative correlation between eotaxin and estimated glomerular filtration rate (eGFR) (p = 0.0566). CONCLUSIONS: Our results indicated an increased in situ production of cytokines and chemokines in DN, including IL-6, IL-1ß, IL-4, and eotaxin. It was observed that, possibly, eotaxin may have an important role in the progression of interstitial inflammation in DN and in eGFR decrease of these patients.


Assuntos
Citocinas/metabolismo , Nefropatias Diabéticas/metabolismo , Rim/metabolismo , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , Quimiocina CCL11/metabolismo , Quimiocina CCL24/metabolismo , Quimiocina CCL26/metabolismo , Quimiocina CCL3/metabolismo , Quimiocinas/metabolismo , Nefropatias Diabéticas/patologia , Feminino , Humanos , Imuno-Histoquímica , Interleucina-10/metabolismo , Interleucina-1beta/metabolismo , Interleucina-4/metabolismo , Interleucina-6/metabolismo , Interleucina-8/metabolismo , Rim/patologia , Masculino , Pessoa de Meia-Idade , Receptores Tipo I de Fatores de Necrose Tumoral/metabolismo , Fator de Necrose Tumoral alfa/metabolismo , Adulto Jovem
4.
BMC Nephrol ; 18(1): 157, 2017 May 12.
Artigo em Inglês | MEDLINE | ID: mdl-28499424

RESUMO

BACKGROUND: Fabry Disease (FD) is a genetic disorder caused by alpha-galactosidase A deficiency. Certain drugs, such as hydroxychloroquine, can produce renal deposits that mimic morphological findings seen in FD, characterizing a type of drug-induced renal phospholipidosis. CASE PRESENTATION: Case 1: A 28-year-old female patient with systemic lupus erythematosus who had been using hydroxychloroquine for 14 months presented subnephrotic proteinuria. Renal biopsy showed deposits compatible with FD. Neither activity analysis of alpha-galactosidase A nor genetic analysis were available and were not performed. These deposits were not detected in a subsequent renal biopsy three years after withdrawal of the medication, characterizing a possible hydroxychloroquine-induced renal phospholipidosis. Case 2: A 29-year-old male patient presented with acroparesthesia, angiokeratomas, cornea verticillata and subnephrotic proteinuria. Deposits compatible with FD were detected upon renal biopsy. The evaluation of alpha-galactosidase A showed no activity in both blood and leukocytes. Genetic analysis identified an M284 T mutation in exon 6, and such mutation was also found in other family members. CONCLUSION: Clinical investigation is necessary in suspected cases of Fabry Disease upon renal biopsy in order to confirm diagnosis. Drug-induced renal phospholipidosis should be considered in differential diagnosis in cases with intracellular osmiophilic, lamellar inclusions in electron microscopy.


Assuntos
Biópsia/métodos , Doença de Fabry/patologia , Nefropatias/patologia , Rim/patologia , Lipidoses/patologia , Adulto , Diagnóstico Diferencial , Feminino , Humanos , Rim/ultraestrutura , Masculino
5.
Arch Gynecol Obstet ; 295(2): 273-283, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-27761731

RESUMO

PURPOSE: To explore information available in the literature about the possible benefits resulting from physical activity (PA) in non-risky pregnant women, repercussion on maternal organism, fetal development, and on long-term offspring health. METHODS: Critical narrative review using online databases. RESULTS: Through critical discussion of studies focused on PA practiced during pregnancy, it was observed that some of the outcomes investigated on both mother and offspring showed conflicting findings. Considering the impact of maternal PA in certain offspring characteristics, due to the fact that their findings come from studies with small samples, they do not allow the stablishment of scientific evidence. However, a feature that shows broad consensus among studies is the view of PA during pregnancy as a safe intervention for mother and fetus. In situations where studies employing PA of moderate-intensity have not enough power to ensure a positive influence on certain clinical outcomes, what is observed is the lack of their influence, not negative impacts. Regarding epigenetic modulations measured late in the offspring, it has been attributed to PA a positive modulatory role on metabolic, hemodynamic and even on behavioral characteristics. However, possible mechanisms involved in these epigenetic changes have not been sufficiently explored. CONCLUSION: Maternal PA appears to be safe for both mother and fetus, and additional studies are needed to confirm the real influence of this practice in the offspring, as well as the perpetuation and transfer of these features between generations.


Assuntos
Desenvolvimento Fetal/fisiologia , Resultado da Gravidez , Adulto , Exercício Físico , Feminino , Humanos , Gravidez , Risco , Tempo
6.
Ultrastruct Pathol ; 40(6): 311-316, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27669128

RESUMO

Congenital or infantile nephrotic syndromes (CNS/INS) correspond to a heterogeneous group of rare diseases in which glomerular renal dysfunction and proteinuria are prominent. The aim of this study is to present six cases of possible CNS/INS with diagnoses based on clinical findings and especially histological, ultrastructural, and immunohistochemical characteristics of renal biopsies. Four cases are presented with diffuse mesangial sclerosis, one of them possibly part of Denys-Drash syndrome and two cases with CNS probably of the Finnish type in patients between 3 months old and 13 years old. The study focuses on the late evolution of Denys-Drash syndrome to end-stage renal disease in a 13-year-old patient and the diagnosis of diffuse mesangial sclerosis in an 8-year-old patient. Thus, it contributes to a better epidemiological characterization of these syndromes, demonstrating cases of CNS/INS in infrequent age groups.


Assuntos
Síndrome Nefrótica , Biópsia , Brasil , Humanos , Nefropatias , Glomérulos Renais
7.
Mediators Inflamm ; 2014: 269681, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25614712

RESUMO

Neonatal sepsis is a major cause of morbidity and mortality and its signs and symptoms are nonspecific, which makes the diagnosis difficult. The routinely used laboratory tests are not effective methods of analysis, as they are extremely nonspecific and often cause inappropriate use of antibiotics. Sepsis is the result of an infection associated with a systemic inflammatory response with production and release of a wide range of inflammatory mediators. Cytokines are potent inflammatory mediators and their serum levels are increased during infections, so changes from other inflammatory effector molecules may occur. Although proinflammatory and anti-inflammatory cytokines have been identified as probable markers of neonatal infection, in order to characterize the inflammatory response during sepsis, it is necessary to analyze a panel of cytokines and not only the measurement of individual cytokines. Measurements of inflammatory mediators bring new options for diagnosing and following up neonatal sepsis, thus enabling early treatment and, as a result, increased neonatal survival. By taking into account the magnitude of neonatal sepsis, the aim of this review is to address the role of cytokines in the pathogenesis of neonatal sepsis and its value as a diagnostic criterion.


Assuntos
Citocinas/sangue , Inflamação/fisiopatologia , Sepse/sangue , Sepse/fisiopatologia , Biomarcadores/sangue , Humanos , Recém-Nascido , Interleucina-10/sangue , Interleucina-1beta/sangue , Interleucina-6/sangue , Interleucina-8/sangue , Sepse/diagnóstico , Fator de Crescimento Transformador beta/sangue , Resultado do Tratamento , Fator de Necrose Tumoral alfa/sangue
8.
J Cardiovasc Dev Dis ; 11(2)2024 Feb 17.
Artigo em Inglês | MEDLINE | ID: mdl-38392279

RESUMO

Fibrosis is one of the main factors that impair the function of many organs. In the heart, fibrosis leads to contractile dysfunction and arrhythmias, which are important in the development of heart failure. Interleukin (IL)-11 is regulated in various heart diseases and has recently been reported to be an important cytokine in fibrosis in this organ. However, this topic has been little explored, and many questions persist. Thus, this systematic review aimed to report on possible IL-11 therapies evaluated in rodent model-induced cardiac fibrosis. Inclusion criteria were experimental in vivo studies that used different rodent models for cardiac fibrosis associated with IL-11 interventions, without year and language restrictions. The search in PubMed, Web of Science, and Embase databases was performed in October 2022. The risk of bias assessment of the studies was based on the guidelines of the SYRCLE tool, and data from the selected articles were also presented in a table as a narrative description. This review was based on eight studies in which five different interventions were used: recombinant human IL-11 (rhIL-11), anti-IL11 (X203), recombinant mouse IL-11 (rmIL-11), lentivirus (LV)-IL-11 + lutein, and anti-IL11RA (X209). Based on the included studies, the results were variable, with IL-11 overexpression inducing cardiac fibrosis, while inhibition protected against this process, preserving the function of this organ. Therefore, IL-11 stands out as a promising therapeutic target for cardiac fibrosis. However, further studies are needed to understand the mechanisms triggered by each treatment, as well as its safety and immunogenicity.

9.
Clin Dev Immunol ; 2013: 678180, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23935649

RESUMO

Antibody-mediated rejection (AMR) is highly detrimental to the prolonged survival of transplanted kidneys. C4d has been regarded as a footprint of AMR tissue damage, and the introduction of C4d staining in daily clinical practice aroused an ever-increasing interest in the role of antibody-mediated mechanisms in allograft rejection. Despite the general acceptance of the usefulness of C4d in the identification of acute AMR, the data for C4d staining in chronic AMR is variable. The presence of C4d in the majority of the biopsies with features of chronic antibody-mediated rejection is reported, but this rejection without C4d staining is observed as well, suggesting that C4d is specific but not sensitive. Further studies on AMR with positive C4d staining in biopsy specimens are really important, as well as the study of novel routine markers that may participate in the pathogenesis of this process.


Assuntos
Complemento C4b/imunologia , Transplante de Rim/efeitos adversos , Rim/imunologia , Rim/patologia , Fragmentos de Peptídeos/imunologia , Citotoxicidade Celular Dependente de Anticorpos , Biópsia , Proteínas do Sistema Complemento/imunologia , Glomerulonefrite/etiologia , Rejeição de Enxerto/imunologia , Rejeição de Enxerto/patologia , Humanos
10.
Ann Diagn Pathol ; 17(1): 22-7, 2013 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-22658343

RESUMO

Renal biopsy is an important method of diagnosis and prognosis in children and adolescents with renal diseases, and there are few studies describing the histopathologic alterations in renal biopsies in these age groups. The aim of this study was to evaluate the incidence of morphologic alterations described in renal biopsies carried out in children and adolescents. Patients aged between 1 month and 18 years were observed from 1996 to 2010 and were separated into 3 age groups: 0 to 6 (group 1, n = 29), 6 to 12 (group 2, n = 31), and 13 to 18 (group 3, n = 77) years. Morphologic alterations were evaluated according to light microscopy, immunofluorescence, and electron microscopy findings. The most common glomerulopathies observed in these different age groups were as follows: group 1-podocytopathy (34.78%), hereditary proteinurias 5 (21.73%), lupus nephritis (13.04%), and Berger disease (8.69%); group 2-podocytopathy (44.44%), acute diffuse glomerulonephritis (22.22%), Berger disease (11.11%), and Alport syndrome or thin membrane disease (11.11%); and group 3-lupus nephritis (22.85%), podocytopathy (20.00%), Berger disease (15.71%), and membranous glomerulopathies (11.42%). This study allows for better knowledge of the prevalence of nephropathies in children and adolescents and shows that a well-supported early diagnosis is indispensable for a more adequate treatment of patients with renal diseases.


Assuntos
Nefropatias/epidemiologia , Nefropatias/patologia , Rim/patologia , Adolescente , Biópsia , Brasil/epidemiologia , Criança , Pré-Escolar , Feminino , Glomerulonefrite por IGA/epidemiologia , Glomerulonefrite por IGA/etnologia , Glomerulonefrite por IGA/patologia , Humanos , Lactente , Nefropatias/etnologia , Nefrite Lúpica/epidemiologia , Nefrite Lúpica/etnologia , Nefrite Lúpica/patologia , Masculino , Prevalência , Proteinúria/epidemiologia , Proteinúria/etnologia , Proteinúria/patologia , Estudos Retrospectivos
11.
Ann Diagn Pathol ; 17(1): 75-9, 2013 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-22963863

RESUMO

The kidney transplant is the main therapeutic alternative for end-stage kidney disease, and rejection is a major complication. The expression of proinflammatory cytokines is related to graft loss, whereas anti-inflammatory cytokines are associated with graft protection. The objective of this study is to evaluate the "in situ" expression of cytokines T helper 1 (tumor necrosis factor α [TNF-α]), T helper 17 (interleukin 17 [IL-17]), and regulatory T cell (transforming growth factor ß [TGF-ß]) and the expression of forkhead box P3 (FoxP3) in allograft kidney. We evaluated in situ expression of cytokines in allograft kidney under rejection process by indirect immunohistochemistry. Eighteen renal graft biopsies were from patients with episodes of rejection. The in situ expression of IL-17, TNF-α, and TGF-ß was significantly higher in patients with acute rejection when compared with the control group. In contrast, analysis of FoxP3 expression showed few positive cells in patients with acute rejection compared with the control group. The results suggest that the expression of proinflammatory cytokines (IL-17 and TNF-α) contributes to the mechanisms of kidney transplant rejection. The increase in TGF-ß expression might be an attempt to establish a process of immunoregulation or even to induce higher production of IL-17. The last hypothesis is supported by the observation of a reduced expression of FoxP3 and elevated levels of IL-17.


Assuntos
Fatores de Transcrição Forkhead/metabolismo , Rejeição de Enxerto/metabolismo , Rejeição de Enxerto/patologia , Interleucina-17/metabolismo , Transplante de Rim , Fator de Crescimento Transformador beta/metabolismo , Fator de Necrose Tumoral alfa/metabolismo , Adulto , Idoso , Biomarcadores/metabolismo , Biópsia , Estudos de Casos e Controles , Regulação para Baixo , Feminino , Rejeição de Enxerto/diagnóstico , Humanos , Falência Renal Crônica/cirurgia , Masculino , Pessoa de Meia-Idade , Transcriptoma , Transplante Homólogo , Regulação para Cima
12.
Ann Diagn Pathol ; 17(1): 67-71, 2013 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-22921727

RESUMO

Hair keeps the scalp warmer and slightly moister than the rest of the skin, which contributes to a favorable environment for mycotic, bacterial, and parasitic infections. It is well established that AIDS makes the patient more susceptible to opportunistic infections and cutaneous manifestations. Because of this, the aim of this study was to analyze scalp fragments of autopsied women with AIDS. Twenty-eight scalp samples of women aged between 18 and 46 years were observed. These women were divided into 2 groups: with AIDS (n = 14) and without AIDS (n = 14). We conducted histochemical (hematoxylin-eosin, Picrosirius, and Verhoeff), morphometric (Image J; National Institutes of Health, Hamilton, ON, Canada and KS-300 Kontron-Zeiss; Kontron Elektronik, Carl-Zeiss, Germany), and immunohistochemical (S-100) analyses of the scalp. In patients with AIDS, epithelial thickness, number of epithelial cell layers, number of immature Langerhans cells in the epidermis, and percentages of elastic fibers in the dermis were significantly lower, whereas telogen hair follicles were significantly higher. The percentage of collagen fibers in the dermis and the diameter of the epithelial cells were smaller in patients with AIDS, without significant difference. AIDS possibly causes immunologic and morphologic alterations in the scalp. This study may establish parameters for better clinical and morphologic diagnostic in patients with AIDS.


Assuntos
Síndrome da Imunodeficiência Adquirida/imunologia , Síndrome da Imunodeficiência Adquirida/patologia , Couro Cabeludo/imunologia , Couro Cabeludo/patologia , Adolescente , Adulto , Autopsia , Tecido Elástico/imunologia , Tecido Elástico/patologia , Epitélio/imunologia , Epitélio/patologia , Feminino , Folículo Piloso/imunologia , Folículo Piloso/patologia , Humanos , Células de Langerhans/imunologia , Células de Langerhans/patologia , Pessoa de Meia-Idade , Adulto Jovem
13.
Fetal Pediatr Pathol ; 31(1): 48-54, 2013 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-22515549

RESUMO

Markers of fetal inflammatory response syndrome (FIRS) can influence the morphologic alterations in liver of autopsied neonates. The IL-6, TNF-α, and C-reactive protein (CRP) expression in liver fragments were marked by immunohistochemistry and the intensity of steatosis, percentage of fibrosis, and the number of foci of extramedullary erythropoiesis were evaluated. The degree of steatosis correlated positively with IL-6 (p = 0.06), positively with CRP (p ≤ 0.001), and negatively with TNF-α (p = 0.06). The collagen percentage correlated positively with IL-6 (p = 0.055) and positively with TNF-α (p ≤ 0.001). Erythropoiesis correlated positively with IL-6 (p ≤ 0.001) and negatively with CRP (p = 0.00754). The analyzed markers of FIRS have an important role in triggering hepatic morphologic alterations.


Assuntos
Doenças do Recém-Nascido/metabolismo , Doenças do Recém-Nascido/patologia , Fígado/metabolismo , Fígado/patologia , Autopsia , Biomarcadores/análise , Proteína C-Reativa/análise , Proteína C-Reativa/biossíntese , Feminino , Humanos , Recém-Nascido , Interleucina-6/análise , Interleucina-6/biossíntese , Masculino , Gravidez , Complicações na Gravidez/metabolismo , Complicações na Gravidez/patologia , Síndrome , Fator de Necrose Tumoral alfa/análise , Fator de Necrose Tumoral alfa/biossíntese
14.
Fetal Pediatr Pathol ; 32(2): 88-96, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-22515506

RESUMO

Studies report transcutaneous electrical nerve stimulation (TENS) as a treatment for placental insufficiency. To induce utero-placental insufficiency in rats, the uterine artery was ligated. Transcutaneous electrical nerve stimulation was applied with a frequency of 80 Hz, pulse duration of 200 µs, and low intensity. Placental blood vessels were analyzed after immunohistochemistry. The number, caliber and area occupied by placental vessels, fetal weight and length, and placental volume were lower in cases stimulated by TENS. The interaction between ligation and stimulation by TENS was associated with reduction of all these measurements, suggesting that TENS use during pregnancy may have harmful effects on intra-uterine development.


Assuntos
Placenta/irrigação sanguínea , Insuficiência Placentária/terapia , Estimulação Elétrica Nervosa Transcutânea , Animais , Modelos Animais de Doenças , Feminino , Imuno-Histoquímica , Gravidez , Ratos , Ratos Wistar
15.
J Bras Nefrol ; 45(2): 229-243, 2023.
Artigo em Inglês, Português | MEDLINE | ID: mdl-37527529

RESUMO

Membranous nephropathy is a glomerulopathy, which main affected target is the podocyte, and has consequences on the glomerular basement membrane. It is more common in adults, especially over 50 years of age. The clinical presentation is nephrotic syndrome, but many cases can evolve with asymptomatic non-nephrotic proteinuria. The mechanism consists of the deposition of immune complexes in the subepithelial space of the glomerular capillary loop with subsequent activation of the complement system. Great advances in the identification of potential target antigens have occurred in the last twenty years, and the main one is the protein "M-type phospholipase-A2 receptor" (PLA2R) with the circulating anti-PLA2R antibody, which makes it possible to evaluate the activity and prognosis of this nephropathy. This route of injury corresponds to approximately 70% to 80% of cases of membranous nephropathy characterized as primary. In the last 10 years, several other potential target antigens have been identified. This review proposes to present clinical, etiopathogenic and therapeutic aspects of membranous nephropathy in a didactic manner, including cases that occur during kidney transplantation.


Assuntos
Glomerulonefrite Membranosa , Síndrome Nefrótica , Adulto , Humanos , Pessoa de Meia-Idade , Glomerulonefrite Membranosa/diagnóstico , Glomerulonefrite Membranosa/etiologia , Glomerulonefrite Membranosa/terapia , Autoanticorpos/uso terapêutico , Glomérulos Renais/patologia , Prognóstico , Síndrome Nefrótica/diagnóstico , Síndrome Nefrótica/etiologia , Síndrome Nefrótica/terapia
16.
PLoS One ; 18(5): e0284789, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37130106

RESUMO

Diabetic nephropathy (DN) is the leading cause of chronic kidney disease and end-stage renal failure worldwide. Several mechanisms are involved in the pathogenesis of this disease, which culminate in morphological changes such as podocyte injury. Despite the complex diagnosis and pathogenesis, limited attempts have been made to establish new biomarkers for DN. The higher concentration of Mindin protein in the urine of patients with type 2 diabetes mellitus suggests that it plays a role in DN. Therefore, this study investigated whether in situ protein expression of Mindin can be considered a potential DN biomarker. Fifty renal biopsies from patients diagnosed with DN, 57 with nondiabetic glomerular diseases, including 17 with focal segmental glomerulosclerosis (FSGS), 14 with minimal lesion disease (MLD) and 27 with immunoglobulin A nephropathy (IgAN), and 23 adult kidney samples from autopsies (control group) were evaluated for Mindin expression by immunohistochemistry. Podocyte density was inferred by Wilms' tumor 1 (WT1) immunostaining, while foot process effacement was assessed by transmission electron microscopy. Receiver operative characteristic (ROC) analysis was performed to determine the biomarker sensitivity/specificity. Low podocyte density and increased Mindin expression were observed in all cases of DN, regardless of their class. In the DN group, Mindin expression was significantly higher than that in the FSGS, MCD, IgAN and control groups. Higher Mindin expression was significantly positively correlated with foot process effacement only in class III DN cases. Furthermore, Mindin protein presented high specificity in the biopsies of patients with DN (p < 0.0001). Our data suggest that Mindin may play a role in DN pathogenesis and is a promising biomarker of podocyte lesions.


Assuntos
Diabetes Mellitus Tipo 2 , Nefropatias Diabéticas , Glomerulonefrite por IGA , Glomerulosclerose Segmentar e Focal , Podócitos , Adulto , Humanos , Nefropatias Diabéticas/diagnóstico , Biomarcadores
17.
Clin Dev Immunol ; 2012: 361730, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22811738

RESUMO

Chagas' disease is caused by the protozoan parasite Trypanosoma cruzi. The immune system plays an important role in the reduction of parasite load, but may also contribute to the development of lesions observed during the chronic phase of the disease. We analyzed cytokines produced by inflammatory heart cells in 21 autopsy samples obtained from patients with Chagas' disease divided according to the presence or absence of heart failure (HF). Left ventricular sections were analyzed by immunohistochemistry using antibodies against human IL-4, IFN-γ, TGF-ß, TNF-α, and NOS2. In situ mRNA expression was quantified by a Low Density Array. The number of IFN-γ-positive cells was significantly higher than IL-4 positive cells. TNF-α, TGF-ß and NOS2 were detected in 65%, 62% and 94% of samples respectively. There was an association between TNF-α-producing cells and the presence of HF. Subjects with HF presented higher levels of STAT4 mRNA, whereas FoxP3 and STAT6 levels were similar in the two groups. A Th1 cytokine pattern predominated in the cardiac inflammatory cell infiltrate of Chagas' disease patients associated with HF. High degree of fibrosis was associated with low NOS2 expression. These results support the idea that Th1 immune responses are involved in heart lesions of Chagas' disease patients.


Assuntos
Doença de Chagas/complicações , Doença de Chagas/imunologia , Citocinas/metabolismo , Insuficiência Cardíaca/etiologia , Insuficiência Cardíaca/imunologia , Doença de Chagas/genética , Citocinas/genética , Citocinas/imunologia , Fibrose Endomiocárdica/imunologia , Fibrose Endomiocárdica/patologia , Insuficiência Cardíaca/genética , Humanos , Interferon gama/genética , Interferon gama/metabolismo , Óxido Nítrico Sintase Tipo II/metabolismo , Células Th1/imunologia , Células Th1/metabolismo , Células Th2/imunologia , Células Th2/metabolismo , Fator de Necrose Tumoral alfa/genética , Fator de Necrose Tumoral alfa/metabolismo
18.
Ann Diagn Pathol ; 16(1): 54-8, 2012 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-21316996

RESUMO

Kocher-Debré-Sémélaigne syndrome is a rare disease with little literature, which develops with myopathy in infancy associated with neuromuscular alterations, polymyositis with symmetrical proximal muscle weakness, pseudohypertrophy, muscular rigidity and spasms, exercise intolerance, myxoedema, short stature, and cretinism. Male patient aged 18 years old, 1.52 m in height, admitted in the General Hospital of Triângulo Mineiro Federal University on November 11, 2003, complaining of intense diffuse abdominal pain like severe cramps, without triggering factors, associated with asthenia and hyporexia. This seems to be one of the few reports of KDS syndrome diagnoses by autopsy, where alterations in the thyroid gland connected with hypotrophy and probable congenital hypothyroidism were described and resulted in complications such as disseminated intravascular coagulation and hemophagocytic syndrome with fast progression to death of an 18-year-old patient.


Assuntos
Hipotireoidismo Congênito/complicações , Hipotireoidismo Congênito/patologia , Coagulação Intravascular Disseminada/complicações , Hipertrofia/complicações , Hipertrofia/patologia , Doenças Musculares/complicações , Doenças Musculares/patologia , Adolescente , Autopsia , Hipotireoidismo Congênito/diagnóstico , Humanos , Hipertrofia/diagnóstico , Masculino , Músculo Esquelético/patologia , Doenças Musculares/diagnóstico
19.
J Nephrol ; 35(5): 1437-1447, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-35119686

RESUMO

INTRODUCTION: Chikungunya virus was detected in cases of acute chikungunya fever in renal tissue. However, chikungunya virus-related kidney injury still lacks characterization, and it is unknown whether the kidneys are reservoirs for the virus. We sought to detect histopathological changes and viral antigens in renal tissue, and to evaluate kidney injury markers in different phases of chikungunya fever. METHODS: Two groups were evaluated in this exploratory study: patients with biopsy-proven kidney injury established after chikungunya fever, and patients with post-chikungunya fever chronic joint manifestations without known kidney injury, in whom we actively searched for kidney injury markers. RESULTS: In the first group, 15 patients had kidney injury 0.5-24 months after chikungunya fever. The most frequent histopathological diagnoses were glomerular lesions. No viral antigens were detected in renal tissue. High-risk genotypes were detected in patients with atypical hemolytic uremic syndrome and focal and segmental glomerulosclerosis. In the second group, 114 patients had post-chikungunya fever joint manifestations on average for 35.6 months. Mean creatinine and proteinuria were 0.9 mg/dl and 71.5 mg/day, respectively. One patient had isolated hematuria. There was no indication for renal biopsy in this group. CONCLUSIONS: Several histopathological features were found after chikungunya fever, without virus detection in renal tissue. These findings suggest that chikungunya virus may trigger kidney lesions with varying degrees of severity at different stages of infection. However, the probability that this virus replicates in the renal tissue seems unlikely.


Assuntos
Febre de Chikungunya , Vírus Chikungunya , Glomerulosclerose Segmentar e Focal , Nefropatias , Febre de Chikungunya/complicações , Febre de Chikungunya/diagnóstico , Vírus Chikungunya/genética , Glomerulosclerose Segmentar e Focal/patologia , Humanos , Nefropatias/diagnóstico , Nefropatias/etiologia , Nefropatias/patologia , Glomérulos Renais/patologia
20.
Can J Kidney Health Dis ; 8: 2054358120985627, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33786192

RESUMO

PURPOSE OF REVIEW: In this narrative review, we describe general aspects, histological alterations, treatment, and implications of Fabry disease (FD) nephropathy. This information should be used to guide physicians and patients in a shared decision-making process. SOURCE OF INFORMATION: Original peer-reviewed articles, review articles, and opinion pieces were identified from PubMed and Google Scholar databases. Only sources in English were accessed. METHODS: We performed a focused narrative review assessing the main aspects of FD nephropathy. The literature was critically analyzed from a theoretical and contextual perspective, and thematic analysis was performed. KEY FINDINGS: FD nephropathy is related to the progressive accumulation of GL3, which occurs in all types of renal cells. It is more prominent in podocytes, which seem to play an important role in the pathogenesis of this nephropathy. A precise detection of renal disorders is of fundamental importance because the specific treatment of FD is usually delayed, making reversibility unlikely and leading to a worse prognosis. LIMITATIONS: As no formal tool was applied to assess the quality of the included studies, selection bias may have occurred. Nonetheless, we have attempted to provide a comprehensive review on the topic using current studies from experts in FD and extensive review of the literature.


OBJET DE LA REVUE: Dans cette revue narrative, nous discutons des aspects généraux, des modifications histologiques, du traitement et des implications de la néphropathie liée à la Maladie de Fabry. Des informations qui serviront à guider les médecins et les patients dans un processus commun de prise de décision. SOURCES: Les originaux d'articles évalués par les pairs, d'articles-synthèses et d'articles d'opinion ont été répertoriés dans les bases de données Pubmed et Google Scholar. Seuls les articles en anglais ont été consultés. MÉTHODOLOGIE: Nous avons procédé à une revue narrative ciblée examinant les principaux aspects de la néphropathie liés à la maladie de Fabry. La documentation a fait l'objet d'une critique rigoureuse du point de vue théorique et contextuel, et une analyse thématique a été effectuée. PRINCIPAUX RÉSULTATS: La néphropathie liée à la maladie de Fabry est associée à l'accumulation progressive de GL3, qui se produit dans tous les types de cellules rénales. Elle est plus présente dans les podocytes, qui semblent jouer un rôle important dans la pathogenèse de la néphropathie. Un dépistage précis des troubles rénaux est d'une importance capitale puisque le traitement spécifique de la maladie de Fabry est généralement retardé, ce qui rend la réversibilité peu probable et conduit à un pronostic plus défavorable. LIMITES: Des biais de sélection pourraient s'être introduits puisqu'aucun outil formel n'a été utilisé pour évaluer les études incluses. Nous avons néanmoins tenté de procéder à un examen complet du sujet grâce aux études actuelles menées par des experts de la maladie de Fabry et à une revue approfondie de la documentation.

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