Your browser doesn't support javascript.
Mostrar: 20 | 50 | 100
Resultados 1 - 4 de 4
Mais filtros

Base de dados
Intervalo de ano de publicação
Indian J Dermatol ; 67(1): 37-44, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35656282


Objective: This study was performed to determine the genotype and allelic frequencies (polymorphisms) of the four genes of vitamin D receptor (VDR) among Egyptian psoriatic patients and healthy controls to explore their association with disease severity (PASI) score and immune modulation of IL-22 cytokine and to predict the response to topical calcipotriol treatment. Patients and Methods: The frequencies of the four VDR gene polymorphisms (FokI, ApaI, TaqI, and BsmI) in blood samples of 51 adult Egyptian patients with psoriasis vulgaris and 50 healthy controls were evaluated using restriction fragment length polymorphism (RFLP)-PCR. Serum levels of IL-22 were measured by ELISA. Results: The most frequent genotype (wild) in the studied patients was Apa1; AA (88.2%) followed by Fok1; FF (47.1%) and Taq1; TT (47%), while Bsm1; BB genotype was (27.7%). The most frequent allele polymorphisms either in one allele (Bb) or both alleles (bb) in psoriatic patients were 72.5%, followed by Ff, ff (52.9%) and Tt, tt (52.9%). The less frequent allelic polymorphism was Aa, aa (27.7%). Insignificant differences in the frequency of genotype (wild) and allelic polymorphisms were detected between patients and controls (P > 0.05). A significantly higher serum concentration of IL-22 (ng/mL) was detected in patients than controls (P = 0.001). Further, 66.6% of patients displayed a clinical response, while 33.4% were non-responders. A significantly higher expression of TaqI polymorphism was detected in (100%) of non-responders (P < 0.001), which was also correlated with disease severity (r = 0.515, P < 0.01). Conclusion: These results suggest that the VDR TaqI polymorphism is the only gene correlated to psoriasis susceptibility in the Egyptian population, and affects the response to topical calcipotriol treatment but does not affect IL-22 immune modulation.

Psoriasis (Auckl) ; 10: 13-21, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32607312


BACKGROUND: Cell lesion and apoptosis with release of cell-free DNA (CFD) in circulation are associated with chronic inflammation of psoriasis. OBJECTIVE: The objective of this study was ï»¿to determine the CFD concentrations in sera of patients with psoriasis, to assess its relationship with disease severity as defined by Psoriasis Area Severity Index (PASI) and other inflammatory biomarkers (C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR)) levels, and to monitor the efficacy of treatment. PATIENTS AND METHODS: Thirty adult patients with different types of psoriasis (25 vulgaris; 10 mild, 15 moderate and 5 erythroderma; severe) were evaluated during the exacerbation phase of the disease, before starting (T0) and after 12 weeks (T12) of treatment with topical therapy for mild cases, narrowband-ultraviolet light B (NB-UVB) for moderate cases and methotrexate for severe cases. Twenty healthy controls were also involved in the study. The concentrations of CFD in sera were measured before and after treatment by quantitative real time PCR (qPCR) using primers of the human ß-globin gene. RESULTS: At T0, all patients presented significant higher levels of ESR (P=0.05) and CFD (P=0.001) compared with controls. Highly significant elevations of all parameters were observed in severe disease (erythroderma) compared to mild/moderate disease (vulgaris). Methotrexate treatment induced highly significant reductions in all inflammatory markers including CFD (P= 0.042) while topical and UV irradiation therapies had no effects. CFD concentrations showed positive correlations with both PASI (r=0.422, P=0.020) and ESR (r=0.321, P=0.023) only before the start of treatment. CONCLUSION: The level of circulating CFD could be used to monitor psoriasis severity. However, its level cannot be stated for the treatment, except in severe erythrodermic patients upon successful treatment with methotrexate. We recommend validation of a convenient and accurate DNA assay applied directly to biological samples which does not require prior DNA extraction and amplification.

Egypt J Immunol ; 14(1): 55-62, 2007.
Artigo em Inglês | MEDLINE | ID: mdl-18689281


We developed an enzyme linked-immunosorbent assay (ELISA) for serodiagnosis of Schistosoma mansoni infection using a purified immunogenic fraction from schistosome adult worm, obtained by SDS-polyacrylamid gel electrophoresis. Sera from patients with active schistosomiasis (egg passers; n=10); inactive schistosomiasis previously treated with praziquantel (not passing eggs; n=10); fascioliasis, hydatosis (n=5); and healthy controls (n=10) were examined. Western blot analysis revealed that the Sm 31/32 KDa fraction of Schistosoma mansoni is recognized by sera from of both active and inactive schistosomiasis. ELISA IgG reactivity (optical density, OD) to Sm 31/32 KDa fraction by ELISA was significantly higher in sera of schistosomiasis patients (active and inactive), (p<0.001) compared to normal controls, while no significant difference was detected between active (OD=0.79 +/- 0.23) & inactive (OD=0.87 +/- 0.37) patients. No reactivity was detected using facioliasis or hydatosis sera. The overall level of specificity and sensitivity attained was 90% and 93%, respectively. It is concluded that the developed Sm 31/32 KDa ELISA may be of value in serodiagnosis of active and inactive intestinal Schistosoma mansoni infection in humans.

Anticorpos Anti-Helmínticos/sangue , Antígenos de Helmintos/imunologia , Ensaio de Imunoadsorção Enzimática/métodos , Schistosoma mansoni/imunologia , Esquistossomose mansoni/diagnóstico , Animais , Anticorpos Anti-Helmínticos/imunologia , Humanos , Contagem de Ovos de Parasitas , Esquistossomose mansoni/imunologia , Sensibilidade e Especificidade
Egypt J Immunol ; 12(2): 39-51, 2005.
Artigo em Inglês | MEDLINE | ID: mdl-17977209


This study was carried out in order to evaluate the efficiency of blood-letting cupping (BLC) therapy as a complementary therapy in management of rheumatoid arthritis (RA) and to investigate its modulatory effects on natural killer cells (NK) and soluble interleukin-2 receptor (SIL-2R). Two groups of RA patients diagnosed according to American Rheumatology Association were included: Group I included 20 patients who received the conventional medicinal therapy of RA, Group II included 30 patients who received combined conventional and BLC therapy. Ten age and sex matched normal controls were also included, as group III. Visual analogue score (VAS), tender joint count (TJC), swollen joint count (SJC), disease activity scores (DAS), laboratory markers of disease activity [erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), Rheumatoid factor (RF)] were evaluated on 3 successive months, NK cell (%) measured by flowcytometry and SIL-2R concentrations measured by ELISA were also assessed. After one month of combined therapy there was significant (P < 0.001) reduction in VAS (5.16 +/- 0.28), TJC (11.62 +/- 1.03), SJC (10.13 +/- 1.02) and DAS (5.35 +/- 0.14). Early and marked reductions in laboratory markers of disease activity (26.90 +/- 3.68) for CRP, (51.46 +/- 6.06) for RF and (40.56 +/-3.36) for ESR were also detected as compared to base line, while the effects of conventional therapy appeared late after 3 months of treatment. Conventional therapy induced significant depression in white blood cell (WBC %) (p < 0.001) whereas combined therapy induced marked (p < 0.001) elevation since the first month (8.44 +/- 1.58) compared to base line (6.94 +/- 1.58). There was a significant (P < 0.05) lowering in NK cell (%) with conventional therapy while combined therapy induced significant (P < 0.001) increase (11.33 +/- 0.4.7) compared to base line level (8.50 +/- 0.46). Additionally, combined therapy resulted in marked reduction (P < 0.001) in SIL-2R conc. after 3 months of treatment (1790 +/- 68.11) compared to base line (2023 +/- 92.95), while insignificant reduction was detected with the conventional therapy. The improvement rate (%) of clinical, laboratory cellular & immunological parameters were significantly higher with combined therapy than with conventional therapy. Moreover, strong positive correlations (p < 0.0001) were detected between SIL-R conc. and clinical parameters VAS (r = 0.890), TJC (r = 0.905), SJC (r = 0.872) and DAS (r = 0.923) and also between SIL-R conc. and ESR (r = 0.973), CRP (r = 0.933), RF (r = 0.941), while a strong negative correlation was found with NK count cell % (r = 0.927). In conclusion, BLC therapy combined with conventional therapy may improve the clinical condition of patients with RA. It has modulatory effects on the innate (NK %) and adaptive cellular (SIL-2R conc.) immune responses that could be used as monitoring tools for disease activity and prognosis.

Artrite Reumatoide/imunologia , Artrite Reumatoide/terapia , Terapias Complementares , Células Matadoras Naturais/imunologia , Receptores de Interleucina-2/sangue , Adulto , Terapia Combinada , Feminino , Humanos , Contagem de Linfócitos , Masculino , Pessoa de Meia-Idade , Receptores de Interleucina-2/imunologia