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1.
Acta Derm Venereol ; 103: adv6226, 2023 Aug 22.
Artigo em Inglês | MEDLINE | ID: mdl-37606155

RESUMO

Hypopigmented mycosis fungoides is a rare form of mycosis fungoides that is characterized by achromic lesions, early onset of disease, a predilection for darker skinned populations, and a predominance of CD8+ T cells. Due to the rarity and heterogeneous presentation of hypopigmented mycosis fungoides, there are no criteria that clearly define the clinical characteristics and treatment regimens for this condition. This retrospective study of 44 paediatric patients with hypopigmented mycosis fungoides aimed to summarize their epidemiological and clinical characteristics and assess the effectiveness and safety of different treatment regimens. Clinical manifestations were further classified into 3 morphological groups: hypopigmented lesions, papules overlying hypopigmented lesions, and erythematous plaques overlying hypopigmented lesions. In addition, the results of this study suggest that interferon alpha might be an effective and well-tolerated therapy that could shorten the treatment time to complete response compared with other treatments. Maintenance therapy and long-term follow-up reduced the recurrence rate.


Assuntos
Micose Fungoide , Neoplasias Cutâneas , Humanos , Criança , Estudos Retrospectivos , Micose Fungoide/tratamento farmacológico , Linfócitos T CD8-Positivos , Pacientes , Neoplasias Cutâneas/tratamento farmacológico
2.
Oral Dis ; 2023 Jun 25.
Artigo em Inglês | MEDLINE | ID: mdl-37357358

RESUMO

OBJECTIVE: Obesity can affect periodontal tissues and exacerbate periodontitis. Pyroptosis, a newly identified type of inflammatory cell death, is involved in the development of periodontal inflammation. The saturated fatty acid palmitic acid (PA) is elevated in obese patients. The effect of PA on pyroptosis in periodontal ligament cells (PDLCs) and its underlying mechanisms remain unknown. MATERIALS AND METHODS: Human PDLCs were isolated from healthy individuals and cultured for experiments. The effects of PA on PDLC pyroptosis and the underlying mechanisms were examined by transmission electron microscopy, quantitative real-time PCR and western blotting. RESULTS: The morphology of PDLCs in the PA group indicated pyroptotic characteristics, including swollen cells, plasma membrane rupture and changes in subcellular organelles. PA induced inflammatory responses in PDLCs, as indicated by an increase in IL-1ß in the cell culture supernatant. Furthermore, we found that the pyroptosis-related proteins caspase-1, caspase-4 and GSDMD were involved in PA-induced cell death. GSDMD and caspase-4 inhibitors alleviated pyroptotic death of PDLCs. Moreover, PA promoted NF-κB P65 phosphorylation. A NF-κB inhibitor decreased IL-1ß expression and partly rescued cell death induced by PA. CONCLUSION: PA activated the NF-κB pathway and induced the inflammatory response in PDLCs. Caspase-4/GSDMD mediated PDLC pyroptosis induced by PA.

3.
Angew Chem Int Ed Engl ; 62(16): e202300654, 2023 Apr 11.
Artigo em Inglês | MEDLINE | ID: mdl-36811228

RESUMO

A series of vanadyl complexes bearing 3-t-butyl-5-bromo, 3-aryl-5-bromo, 3,5-dihalo-, and benzo-fused N-salicylidene-tert-leucinates was examined as catalysts for 1,2-alkoxy-phosphinoylation of 4-, 3-, 3,4-, and 3,5-substituted styrene derivatives (including Me/t-Bu, Ph, OR, Cl/Br, OAc, NO2 , C(O)Me, CO2 Me, CN, and benzo-fused) with HP(O)Ph2 in the presence of t-BuOOH (TBHP) in a given alcohol or cosolvent with MeOH. The best scenario involved the use of 5 mol % 3-(2,5-dimethylphenyl)-5-Br (i.e., 3-DMP-5-Br) catalyst at 0 °C in MeOH. The desired catalytic cross coupling reactions proceeded smoothly with enantioselectivities of up to 95 % ee of (R)-configuration as confirmed by X-ray crystallographic analysis of several recrystallized products. The origin of enantiocontrol and homolytic substitution of the benzylic intermediates by vanadyl-bound methoxide and radical type catalytic mechanism were proposed.

4.
J Cell Mol Med ; 26(16): 4401-4415, 2022 08.
Artigo em Inglês | MEDLINE | ID: mdl-35775112

RESUMO

Lung adenocarcinoma (LUAD) is the most challenging neoplasm to treat in clinical practice. Ankyrin repeat domain 49 protein (ANKRD49) is highly expressed in several carcinomas; however, its pattern of expression and role in LUAD are not known. Tissue microarrays, immunohistochemistry, χ2 test, Spearman correlation analysis, Kaplan-Meier, log-rank test, and Cox's proportional hazard model were used to analyse the clinical cases. The effect of ANKRD49 on the LUAD was investigated using CCK-8, clonal formation, would healing, transwell assays, and nude mice experiment. Expressions of ANKRD49 and its associated downstream protein molecules were verified by real-time PCR, Western blot, immunohistochemistry, and/or immunofluorescence analyses. ANKRD49 expression was highly elevated in LUAD. The survival rate and Cox's modelling analysis indicated that there may be an independent prognostic indicator for LUAD patients. We also found that ANKRD49 promoted the invasion and migration in both in in vitro and in vivo assays, through upregulating matrix metalloproteinase (MMP)-2 and MMP-9 activities via the P38/ATF-2 signalling pathway Our findings suggest that ANKRD49 is a latent biomarker for evaluating LUAD prognosis and promotes the metastasis of A549 cells via upregulation of MMP-2 and MMP-9 in a P38/ATF-2 pathway-dependent manner.


Assuntos
Adenocarcinoma de Pulmão , Neoplasias Pulmonares , Proteínas Musculares/metabolismo , Fator 2 Ativador da Transcrição/metabolismo , Adenocarcinoma de Pulmão/genética , Adenocarcinoma de Pulmão/metabolismo , Animais , Linhagem Celular Tumoral , Movimento Celular/genética , Proliferação de Células , Regulação Neoplásica da Expressão Gênica , Neoplasias Pulmonares/patologia , Metaloproteinase 9 da Matriz/metabolismo , Camundongos , Camundongos Nus , Transdução de Sinais
5.
J Craniofac Surg ; 27(2): 405-9, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26872281

RESUMO

Sixty-nine experienced Chinese orthodontists evaluated 108 Chinese patients' facial attractiveness from set of photographs (frontal, lateral, and frontal smiling photos) taken at the end of orthodontic treatment. These 108 patients, which contained an equal number of patients with Class I, II, and III malocclusion, were randomly selected from 6 orthodontic treatment centers throughout China. Spearman rank-order correlation coefficients (rs) analyses were performed to examine agreement in ranking between all judge pairs. Pearson correlation and multivariate regression were performed to examine the correlation between cephalometric measures and end-of-treatment Photo Attractiveness Rank.96.68% judge pairs showed moderate correlated (+0.4 ≤ rs < +0.7) subjective rankings. Cephalometric measures significantly correlated with end-of-treatment Photo Attractiveness Rank included interincisal angle (r = 0.330, P < 0.05), L1/MP° (r = 0.386, P < 0.05), L1-NBmm (r = 0.451, P < 0.01), L1/NB° (r = 0.374, P < 0.05), and profile angle (r = 0.353, P < 0.05) in Class I patients with an explained variance of 32.8%, and ANB angle (r = 0.432, P < 0.01), angle of convexity (r = 0.448, P < 0.01), profile angle (r = 0.488, P < 0.01), Li to E-line (r = 0.374, P < 0.05), Li to B-line (r = 0.543, P < 0.01), and Z angle (r = 0.543, P < 0.01) in Class II patient with an explained variance of 43.3%.There was less association than expected between objective measurements on the lateral cephalograms and clinicians' rankings of facial attractiveness on clinical photography in Chinese patients. Straight-stand lower incisor was desired for facial attractiveness of Class I malocclusion; and sagittal relationship and lip prominence influence the esthetics of Class II malocclusion in Chinese population.


Assuntos
Cefalometria/métodos , Estética Dentária , Face/anatomia & histologia , Má Oclusão/terapia , Adolescente , Adulto , Criança , China , Feminino , Humanos , Masculino , Má Oclusão/diagnóstico , Sorriso , Adulto Jovem
7.
Dermatol Ther ; 27(4): 227-9, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24673843

RESUMO

A cutaneous lymphoproliferative disorder, localized pagetoid reticulosis (LPR), is rare but distinctive in its clinical and histopathological manifestations. Without an evidence-based medicine treatment guideline because of extremely low incidence, LPR poses a therapeutic challenge. We describe a 67-year-old Chinese woman with LRP who showed complete response to narrow-band ultraviolet B combined with intramuscular interferon alpha-2b.


Assuntos
Interferon-alfa/uso terapêutico , Reticulose Pagetoide/terapia , Neoplasias Cutâneas/terapia , Terapia Ultravioleta/métodos , Idoso , Terapia Combinada , Feminino , Humanos , Interferon alfa-2 , Interferon-alfa/administração & dosagem , Reticulose Pagetoide/patologia , Proteínas Recombinantes/administração & dosagem , Proteínas Recombinantes/uso terapêutico , Neoplasias Cutâneas/patologia , Resultado do Tratamento
8.
Chin Med Sci J ; 29(1): 33-7, 2014 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-24698676

RESUMO

OBJECTIVE: To determine the efficacy of palliative radiotherapy in treating tumor-stage cutaneous T-cell lymphoma/mycosis fungoides (MF). METHODS: From January 2008 to January 2013, a total of 11 patients with tumor-stage MF were treated with local radiation therapy in Peking Union Medical College Hospital. The median age of these patients was 53.36 ± 14.45 years. Female-male ratio was 1:1.2. The average course of disease was 10.82 ± 3.37 years. All the patients were treated with local electronic beam irradiation with a total median dosage of 48.55 ± 9.51 (40-74) Gy in an average of 24.55 ± 5.57 (20-40) fractions, 5 fractions per week. RESULTS: The median follow-up time was 55.27 ± 29.3 (13-103) months. No severe acute or chronic side effects of irradiation were observed. Complete clinical response (CR) rate of the radiated sites was 54.5% (6/11), partial response (PR) rate was 36.4% (4/11), and the overall response rate (CR+PR) was 90.9%. One patient showed no response. CONCLUSION: Local radiotherapy with psolaren plus ultraviolet A and/or interferon maintaining treatment is an effective palliative therapy in the treatment of tumor-stage MF patients.


Assuntos
Micose Fungoide/radioterapia , Cuidados Paliativos/métodos , Neoplasias Cutâneas/radioterapia , Adulto , Idoso , Antineoplásicos/administração & dosagem , Antineoplásicos/uso terapêutico , Quimiorradioterapia Adjuvante/métodos , Intervalo Livre de Doença , Feminino , Humanos , Interferons/administração & dosagem , Interferons/uso terapêutico , Linfoma Cutâneo de Células T/tratamento farmacológico , Linfoma Cutâneo de Células T/patologia , Linfoma Cutâneo de Células T/radioterapia , Masculino , Pessoa de Meia-Idade , Micose Fungoide/tratamento farmacológico , Micose Fungoide/patologia , Estadiamento de Neoplasias , Terapia PUVA/métodos , Dosagem Radioterapêutica , Neoplasias Cutâneas/tratamento farmacológico , Neoplasias Cutâneas/patologia , Resultado do Tratamento
9.
Zhonghua Yi Xue Za Zhi ; 93(32): 2529-33, 2013 Aug 27.
Artigo em Chinês | MEDLINE | ID: mdl-24351590

RESUMO

OBJECTIVE: To evaluate the distribution of four IgG subclasses targeting NC16A domain of BP180 in bullous pemphigoid (BP) patients by developing and optimizing a detection method of anti-BP180NC16A IgG subclasses so as to assess its sensitivity and specificity. METHODS: Enzyme-linked immunosorbent assay (ELISA) was developed with recombinant GST-BP180NC16A proteins generated by a bacterial expression system. And 136 BP sera and 20 healthy control sera from our hospital between 2009 and 2012 were tested by ELISA, and the cutoff value of four IgG subclasses was set at an A reading corresponding to the mean value plus 3 times of standard deviation of 20 healthy controls sera. Western blot was also used to detect the IgG subclasses in patients with four positive IgG subclasses by ELISA. RESULTS: The cutoff value of specific IgG1, IgG2, IgG3 and IgG4 were 0.113,0.196,0.154 and 0.120. The values of four IgG subclasses from 20 healthy controls were lower than the corresponding cutoff value, making the detection system good specificity. The positive rates of anti-BP180NC16A IgG1, IgG2, IgG3 and IgG4 antibody were 67.6% (92/136) , 45.6% (62/136), 50.7% (69/136) and 54.4% (74/136) respectively in 136 BP sera. All four IgG subclasses were positive in 29 BP sera, accounting for 21.3%. The number of BP sera positive for at least one IgG subclass were 112, accounting for 82.4%, indicating that the combined sensitivity of four IgG subclasses was 82.4%. Western blot revealed that the number of positivity was 15 and 14 for IgG1 and IgG4 respectively in 20 BP patients with four IgG subclasses positive with ELISA. CONCLUSION: The specificity of ELISA is excellent while its sensitivity needs further improvements.


Assuntos
Imunoglobulina G/sangue , Penfigoide Bolhoso/sangue , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , Ensaio de Imunoadsorção Enzimática , Feminino , Humanos , Imunoglobulina G/classificação , Masculino , Pessoa de Meia-Idade , Sensibilidade e Especificidade , Adulto Jovem
10.
Respir Physiol Neurobiol ; 308: 103980, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-36273780

RESUMO

Obstructive sleep apnea (OSA) is a sleep-related breathing disorder characterized by intermittent and recurrent upper airway collapse during sleep that leads to chronic intermittent hypoxia (CIH). The genioglossus (GG) is the largest dilator muscle, which controls the upper airway and plays an important role in OSA pathology. Elucidating its genetic alterations may help identify potential targets for OSA. However, the genetic aspects of the GG in CIH mice remain unclear. Here, we have conducted an RNA sequencing (RNA-Seq) analysis to assess the differentially expressed genes (DEGs) in the GG between CIH mice and normoxia (NOR) mice. A total of 637 DEGs were identified to be dysregulated in CIH mice compared with control mice. Bioinformatics analysis showed that the DEGs were related to various physiological processes, such as the endogenous stimulus responses, cellular component organization and metabolic processes. Extracellular matrix (ECM)-receptor interaction was the top KEGG pathway in the environmental information processing category with high significance and large fold changes. From the gene weight distributions of collagen (Col)-related biological processes (BPs), we found several significant DEGs, such as Col1a1, Col1a2, Mmp2, Col3a1, Col5a1, Fmod, and Col5a2. A PPI network showed that Col1a1 was linked to ECM-receptor interactions, responses to reactive oxygen species (ROS) and Col-related BPs. It was verified in vivo and in vitro that hypoxia can induce excess ROS and reduce Col expression levels. Moreover, we found NAC can effectively scavenge ROS and restore collagen synthesis. These findings contribute to a better understanding of the mechanisms linking OSA and upper airway muscle injury and may help identify potential therapeutic targets.


Assuntos
Apneia Obstrutiva do Sono , Transcriptoma , Camundongos , Animais , Espécies Reativas de Oxigênio/metabolismo , Hipóxia , Fibromodulina
11.
Appl Immunohistochem Mol Morphol ; 30(6): 418-424, 2022 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-35639405

RESUMO

Lung squamous cell carcinoma (LUSC) is associated with poor clinical outcomes and identifying novel biomarkers that are involved in the progression of LUSC is important for prognosis and targeted treatment. Herein, ankyrin repeat domain 49 (ANKRD49) protein in LUSC versus paired noncancerous lung tissues was tested and its clinical significance was evaluated through χ 2 test, log-rank test, and Cox proportional hazards model. The results showed the ANKRD49 protein in LUSC was elevated and correlated with the tumor-node-metastasis stage, lymph node metastasis, distal metastasis, and differentiation. Patients with higher ANKRD49 had lower overall survival rate and higher ANKRD49 expression in lung tissues may be used as an independent prognostic marker for LUSC patients.


Assuntos
Carcinoma Pulmonar de Células não Pequenas , Carcinoma de Células Escamosas , Neoplasias Pulmonares , Biomarcadores Tumorais , Carcinoma Pulmonar de Células não Pequenas/patologia , Carcinoma de Células Escamosas/patologia , Humanos , Estimativa de Kaplan-Meier , Pulmão/patologia , Neoplasias Pulmonares/patologia
12.
Eur J Oral Sci ; 119(2): 128-35, 2011 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21410552

RESUMO

Chronic intermittent hypoxia (CIH) is a frequent feature of obstructive sleep apnea/hypopnea syndrome (OSAHS), and it may alter upper airway muscle endurance. We have previously reported the positive effects of estrogen on genioglossus fatigue resistance in rats. Our present study was designed to evaluate the effects of two phytoestrogens - genistein and coumestrol - on genioglossus contractile function and estrogen receptor (ER) expression in female rats exposed to CIH. Eight-wk-old female rats were ovariectomized and exposed to CIH for 5 wk. Genistein and coumestrol, respectively, were administered by intraperitoneal injection, at a dose of 2.5 mg kg(-1) d(-1), during the last 4 d of exposure to CIH. The contractile properties of the genioglossus were measured. Real-time RT-PCR and western blotting were performed to determine the expression of ERs in the genioglossus. Phytoestrogens were found to significantly increase genioglossus fatigue resistance, the effect of genistein being more powerful than that of coumestrol. However, higher levels of ER mRNA and protein were detected in the coumestrol group than in the genistein group. We conclude that phytoestrogens, especially genistein, could improve the endurance of the genioglossus muscle in ovariectomized rats exposed to CIH, and this effect is, in part, not related to its estrogenic action.


Assuntos
Cumestrol/farmacologia , Genisteína/farmacologia , Contração Muscular/efeitos dos fármacos , Músculo Esquelético/efeitos dos fármacos , Fitoestrógenos/farmacologia , Apneia Obstrutiva do Sono/metabolismo , Análise de Variância , Animais , Doença Crônica , Modelos Animais de Doenças , Feminino , Hipóxia/complicações , Hipóxia/fisiopatologia , Contração Muscular/fisiologia , Músculo Esquelético/metabolismo , RNA Mensageiro/análise , Ratos , Ratos Sprague-Dawley , Receptores de Estrogênio/efeitos dos fármacos , Receptores de Estrogênio/genética , Receptores de Estrogênio/metabolismo , Apneia Obstrutiva do Sono/complicações , Apneia Obstrutiva do Sono/tratamento farmacológico , Língua
13.
Drug Dev Ind Pharm ; 37(7): 868-74, 2011 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-21231900

RESUMO

Particulate systems that could deliver drug specifically to duodenum have not yet been reported. The aim of this study was to develop a novel duodenum-specific drug delivery system based on thiolated chitosan and hydroxypropyl methylcellulose acetate maleate (HPMCAM) for the duodenal ulcer application. Berberine hydrochloride was used as model drug. Thiolated chitosan was synthesized and further used for the preparation of mucoadhesive microspheres. HPMCAM, which is insoluble below pH 3.0 was synthesized and used for the coating of thiolated chitosan microspheres (TCM). The resulting thiolated chitosan immobilized on chitosan was 268.21 ± 18 µmol/g. In vitro mucoadhesion study showed that the mucoadhesion property of TCM was better than that of chitosan microspheres. Morphological observation showed that the HPMCAM coating would maintain its integrity in simulated gastric fluid (SGF) for 2 h and dissolved quickly in simulated pathological duodenal fluid (SPDF; pH 3.3). In vitro drug release studies showed that only 4.75% of the drug was released in SGF for 2 h, while nearly 90% of the drug was released within 6 h after transferring into SPDF.


Assuntos
Sistemas de Liberação de Medicamentos/métodos , Duodeno/efeitos dos fármacos , Adesividade , Berberina/administração & dosagem , Quitosana , Úlcera Duodenal/tratamento farmacológico , Duodeno/metabolismo , Humanos , Concentração de Íons de Hidrogênio , Derivados da Hipromelose , Técnicas In Vitro , Mucosa Intestinal/efeitos dos fármacos , Mucosa Intestinal/metabolismo , Metilcelulose/análogos & derivados , Microscopia Eletrônica de Varredura , Microesferas , Comprimidos com Revestimento Entérico
14.
Zhongguo Yi Xue Ke Xue Yuan Xue Bao ; 33(5): 525-8, 2011 Oct.
Artigo em Chinês | MEDLINE | ID: mdl-22338136

RESUMO

OBJECTIVE: To explore the clinical and histopathological manifestations, therapy and prognosis of lupus erythematosus panniculitis (LEP). METHOD: We retrospectively reviewed the clinical data and histopathological features of 22 cases of LEP diagnosed at Peking Union Medical College Hospital from January 2008 to February 2010. RESULTS: The lesions appeared as atrophy, erythema, subcutaneous nodules, infiltrated erythema, and ulceration over the scalp, face, upper limbs, and buttock. Histopathological features were lobular panniculitis in the subcutaneous fat; sometimes septal panniculitis could be seen. Hydroxychloroquine sulfate and corticosteroid were effective treatment; most patients responded well to the treatment, while a few experienced recurrence when the treatment tapped or discontinued. CONCLUSIONS: LEP is a rare cutaneous variant of lupus erythematosus. The diagnosis of LEP is mainly based on clinical findings and pathological features. Hydroxychloroquine and low- and middle-dose corticosteroid are effective for the treatment of LEP.


Assuntos
Paniculite de Lúpus Eritematoso/tratamento farmacológico , Paniculite de Lúpus Eritematoso/patologia , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Estudos Retrospectivos , Adulto Jovem
15.
Shanghai Kou Qiang Yi Xue ; 30(4): 389-393, 2021 Aug.
Artigo em Chinês | MEDLINE | ID: mdl-34693432

RESUMO

PURPOSE: This study investigated the effectiveness of orofacial myofunctional therapy(OMT) in improving facial morphology of children with obstructive sleep apnea (OSA) after adenotonsillectomy (AT). METHODS: Ten children aged from 4-7 years with persistent oral breathing for more than 1 month after adenotonsillectomy were chosen to receive orofacial myofunctional therapy. The patients were required to take photos before and after orofacial myofunctional therapy. In order to compare the soft changes before and after OMT treatment, twelve representative mark points were selected and used for proportion and angle measurements. Graphpad Prism 8 statistical software was used for statistical analysis, to compare the differences in facial morphology of patients before and after treatment. RESULTS: Compared with before OMT, a significant difference was found in the proportion of Sn-Ls/Sn-Stms(P=0.0002), Sn-Stms/Sn-Me'(P<0.05), as well as in the angle of Gs-Sn-Pos (P<0.05), nasolabial angle(P=0.0005), mentolabial angle (P=0.0026) after OMT treatment. CONCLUSIONS: Orofacial myofunctional therapy can be considered as an effective complementary treatment for OSA patients with oral breathing after adenotonsillectomy.


Assuntos
Apneia Obstrutiva do Sono , Tonsilectomia , Adenoidectomia , Criança , Face , Humanos , Terapia Miofuncional , Apneia Obstrutiva do Sono/terapia
16.
Shanghai Kou Qiang Yi Xue ; 30(2): 129-134, 2021 Apr.
Artigo em Chinês | MEDLINE | ID: mdl-34109349

RESUMO

PURPOSE: The goal of this investigation was to measure and analyze the root position of palatally malposed maxillary lateral incisor based on cone-beam CT(CBCT)images, in order to provide references for orthodontists to move this kind of teeth scientifically. METHODS: CBCT data from 200 patients meeting the selection criteria with palatally malposed maxillary lateral incisor were investigated in this study. The root was divided into eight equal parts by length, then T1 to T8 were orderly pointed from root apex to alveolar ridge crest. The labial and palatal bone thickness at each point was measured; meanwhile, the angle between the long axis of the tooth and that of the alveolar bone was measured.The data was analyzed using SPSS 19.0 software package. RESULTS: The mean labial bone thicknesses at all researched points were less than 1.00 mm, except for point T1,T7 and T8. The mean labial bone thicknesses at point T3, T4 and T5 were the thinnest, which were all less than 0.5 mm(P<0.05). The mean thicknesses of labial bone gradually increased from T4 to T8(P<0.05). The mean palatal bone thicknesses were all more than 1.00 mm at the eight points,the mean thicknesses of palatal bone gradually increased from T8 to T1(P<0.05). All the angulations between the long axes of teeth and those of the alveolar bone were negative, indicating the root was close to the labial alveolar wall. The average angulation was minus 31.06 degrees. CONCLUSIONS: Results suggest that the root of palatally malposed maxillary lateral incisor is close to the labial wall of the alveolar bone, its labial alveolar bone is frequently quite thin or even deficient, especially in the zone between 1/4 root length to the root apex and the mid-root. If we move the palatally malposed maxillary lateral incisor labially, it is better to choose tipping movement, instead of bodily movement, in order to avoid serious bone fenestration and dehiscence or root absorption.


Assuntos
Incisivo , Maxila , Processo Alveolar/diagnóstico por imagem , Tomografia Computadorizada de Feixe Cônico , Humanos , Incisivo/diagnóstico por imagem , Maxila/diagnóstico por imagem , Palato
17.
Int Immunopharmacol ; 99: 107901, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34273637

RESUMO

Periodontitis is initiated by serious and sustained bacterial infection and ultimately results in chronic immune-mediated inflammation, tissue destruction, and bone loss. The pathogenesis of periodontitis remains unclear. Host immunological responses to periodontal bacteria ultimately determine the severity and mechanisms governing periodontitis progression. This study aimed to clarify the effect of the hypoxia-inducible factor-1α (HIF-1α) activator dimethyloxalylglycine (DMOG) on a mouse periodontitis model and its underlying role in macrophage polarization. qRT-PCR analysis showed that DMOG inhibited the M1-like polarization of both RAW264.7 macrophages and murine bone marrow macrophages (BMMs) and downregulated TNF-α, IL-6, CD86, and MCP-1 expression in vitro. Immunofluorescence staining and flow cytometry also confirmed the less percentage of F4/80 + CD86 + cells after DMOG treatment. The phosphorylation of NF-κB pathway was also inhibited by DMOG with higher level of HIF-1α expression. Furthermore, mice treated with DMOG showed decreased alveolar bone resorption in the experimental periodontitis model, with significant increases in alveolar bone volume/tissue volume (BV/TV) and bone mineral density (BMD). DMOG treatment of mice decreased the ratio of M1/M2 (CD86+/CD206+) macrophages in periodontal tissues, resulting in the downregulation of proinflammatory cytokines such as TNF-α and IL-6 and increased levels of anti-inflammatory factors such as IL-4 and IL-10. DMOG treatment promoted the number of HIF-1α-positive cells in periodontal tissues. This study demonstrated the cell-specific roles of DMOG in macrophage polarization in vitro and provided insight into the mechanism underlying the protective effect of DMOG in a model of periodontitis.


Assuntos
Perda do Osso Alveolar/tratamento farmacológico , Aminoácidos Dicarboxílicos/uso terapêutico , Macrófagos/efeitos dos fármacos , Periodontite/tratamento farmacológico , Perda do Osso Alveolar/diagnóstico por imagem , Perda do Osso Alveolar/imunologia , Perda do Osso Alveolar/patologia , Aminoácidos Dicarboxílicos/farmacologia , Animais , Citocinas/genética , Subunidade alfa do Fator 1 Induzível por Hipóxia , Macrófagos/imunologia , Masculino , Maxila/diagnóstico por imagem , Maxila/patologia , Camundongos , Camundongos Endogâmicos C57BL , NF-kappa B/imunologia , Periodontite/diagnóstico por imagem , Periodontite/imunologia , Periodontite/patologia , Células RAW 264.7 , Transdução de Sinais/efeitos dos fármacos , Microtomografia por Raio-X
18.
Folia Parasitol (Praha) ; 682021 Jun 18.
Artigo em Inglês | MEDLINE | ID: mdl-34180401

RESUMO

The apicomplexan Toxoplasma gondii (Nicolle et Manceaux, 1908) secretes a group of serine/threonine kinases from rhoptries, which play vital roles in boosting intracellular infection. Toxoplasma gondii rhoptry organelle protein 17 (ROP17) is one of these important kinase proteins. Nevertheless, its function remains unclear. Here, we showed that ROP17 induced autophagy in vitro and in vivo. The autophagy of small intestine tissues of T. gondii tachyzoite (RH strain)-infected mice was detected by the immunohistochemistry staining of LC3B, Beclin 1 and P62. ROP17 overexpression augmented starvation-induced autophagy in HEK 293T cells as measured by MDC staining, transmission electron microscopy (TEM), fluorescence microscopy and Western blot analysis. Moreover, the interaction of ROP17 and Bcl-2 was confirmed using co-immunoprecipitation analysis, and the data demonstrated that ROP17 had an autophagic role dependent on the Beclin 1-Bcl-2 pathway, which was also revealed in an in vivo model through immunohistochemical staining. Pearson coefficient analysis showed that there existed strong positive correlations between the expression of ROP17 and LC3B, Beclin 1 and phosphorylation of Bcl-2, while strong negative correlations between the expression of ROP17 and p62 and Bcl-2. Collectively, our findings indicate that ROP17 plays a pivotal role in maintaining T. gondii proliferation in host cells via the promotion of autophagy-dependent survival.


Assuntos
Autofagia/genética , Proteína Beclina-1/metabolismo , Proteínas Proto-Oncogênicas c-bcl-2/metabolismo , Proteínas de Protozoários/genética , Toxoplasma/fisiologia , Fatores de Virulência/genética , Animais , Células HEK293 , Humanos , Camundongos , Proteínas de Protozoários/metabolismo , Toxoplasma/genética , Fatores de Virulência/metabolismo
19.
Eur J Oral Sci ; 118(2): 139-44, 2010 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-20487002

RESUMO

Patients with obstructive sleep apnea/hypopnea syndrome (OSAHS) often exhibit fatigued or inefficient upper airway dilator muscle activity. It has been shown that estrogen may have some impact on upper airway contractility under normoxic conditions. Chronic intermittent hypoxia (CIH) is a frequent feature of OSAHS, and it may alter muscle susceptibility to oxidative stress, a characteristic of a fatigable nature. Hypoxia inducible factor-1 (HIF-1) is a transcription factor that is responsible for the regulation of oxygen homeostasis under hypoxic conditions. We examined the effects of estrogen on the contractility of the genioglossus by exposing rats to alternating cycles of 6-8% O(2) every 15 s for a total duration of 35 d. The results showed that muscle fatigue resistance was significantly decreased after CIH but was partially reversed after estrogen treatment. Compared with the control group, real-time reverse transcription-polymerase chain reaction and western blotting showed higher levels of HIF-1alpha messenger RNA and protein in the CIH group, but estrogen treatment reduced, in a dose-independent manner, the levels of HIF-1alpha messenger RNA and protein in rats exposed to CIH. We conclude that CIH induced the expression of HIF-1alpha in the genioglossus and altered the physical properties towards a more fatigable phenotype, whereas estrogen inhibited the over-expression of HIF-1alpha, and this may account for the improvement of upper airway muscle endurance in CIH rats.


Assuntos
Regulação para Baixo , Estrogênios/uso terapêutico , Subunidade alfa do Fator 1 Induzível por Hipóxia/análise , Fadiga Muscular/efeitos dos fármacos , Substâncias Protetoras/uso terapêutico , Língua/efeitos dos fármacos , Animais , Modelos Animais de Doenças , Relação Dose-Resposta a Droga , Estimulação Elétrica , Estrogênios/administração & dosagem , Homeostase/fisiologia , Hipóxia/fisiopatologia , Subunidade alfa do Fator 1 Induzível por Hipóxia/efeitos dos fármacos , Contração Isométrica/efeitos dos fármacos , Contração Isométrica/fisiologia , Masculino , Fadiga Muscular/fisiologia , Tono Muscular/efeitos dos fármacos , Tono Muscular/fisiologia , Consumo de Oxigênio/fisiologia , Fenótipo , Substâncias Protetoras/administração & dosagem , RNA Mensageiro/análise , Ratos , Ratos Sprague-Dawley , Fatores de Tempo , Língua/fisiopatologia , Transdutores
20.
Zhonghua Yi Xue Za Zhi ; 90(46): 3287-90, 2010 Dec 14.
Artigo em Chinês | MEDLINE | ID: mdl-21223789

RESUMO

OBJECTIVE: To explore the clinical and histopathological manifestations, therapy and prognosis of hypopigmented mycosis fungoides (HMF) in children. METHODS: Six pediatric cases of HMF from February 2008 to October 2009 were reviewed and analyzed at our hospital. RESULTS: There were 5 males and 1 female with a average age of 11 years old (range: 9-14). The lesions appeared poorly-demarcated hypopigmented macula and patches disseminated over the trunk and extremities, scales and infiltrated papules over the hypopigmented lesions or invasive erythemas arose and enlarged gradually. Histologically, there was an epidermal infiltration of atypical lymphocytes. The immunohistochemical staining revealed a pattern of T lymphoma and a predominance of CD8+ T cell. All patients were of T2N0M0/IB except for one at the stage of T1N0M0/IA. Two patients received narrow band ultraviolet B (NB-UVB), one NB-UVB plus alpha interferon, another NB-UVB plus alpha interferon and topical steroid, one Chinese traditional herbal regimen while the last one none. And NB-UVB alone or plus alpha interferon achieved a clinical complete response (CR). The herbal regimen failed to cure the lesions but achieved no response. The non-treated patient progressed gradually. The average follow-up was 16 months (range: 9-28). The progression-free rate was 83.3% and the overall survival rate 100%. CONCLUSIONS: Visceral and lymph note involvements are rare in HMF of children. The prognosis of early-stage treatment is satisfactory. NB-UVB alone or plus alpha interferon achieves a clinical CR in most early-stage patients.


Assuntos
Hipopigmentação/patologia , Linfoma Cutâneo de Células T/patologia , Micose Fungoide/patologia , Neoplasias Cutâneas/patologia , Adolescente , Criança , Feminino , Humanos , Hipopigmentação/terapia , Linfoma Cutâneo de Células T/terapia , Masculino , Micose Fungoide/terapia , Estudos Retrospectivos , Neoplasias Cutâneas/terapia
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