Genetic variant in TNF-α gene and its plasma level in relation to obstructive sleep apnoea in the Pakistani population.

OBJECTIVE: To assess the link between tumour necrosis factor-alpha -308 guanine/adenine polymorphism and tumour necrosis factor-alpha plasma levels in relation to obstructive sleep apnoea. METHODS: The cross-sectional study was conducted from December 2018 to March 2021 at the sleep clinic of Dow University Hospital, Karachi, on obstructive sleep apnoea patients and healthy controls. Epworth Sleep Scale score was used to determine daytime sleepiness, while full-night polysomnography was carried out for obstructive sleep apnoea confirmation and categorisation according to severity. Blood sample collection was followed by deoxyribonucleic acid extraction and plasma tumour necrosis factor-alpha measurement using enzyme-linked immunosorbent assay. Genotype distribution and allelic frequency were assessed. Data was analysed using SPSS 20. RESULTS: Out of the 225 subjects, with a mean age of 47.68±9.88 years, 132 (58.7%) were males, and 93 (41.3%) were females. Among them, 150 (66.7%) were patients, and 75 (33.3%) were controls. Heterozygous tumour necrosis factor-alpha -308 guanine/adenine genotypes were significantly higher among the patients (p<0.05). Minor allele - 308 adenine showed an association with obstructive sleep apnoea, its severity, higher tumour necrosis factor-alpha levels, neck circumference, excessive daytime sleepiness and the presence of hypertension (p<0.05). CONCLUSIONS: Tumour necrosis factor-alpha -308 adenine allele and higher tumour necrosis factor-alpha levels were found to be linked with obstructive sleep apnoea. The polymorphism also showed an association with hypertension in obstructive sleep apnoea patients.

Assessment Of Endometrial Integrin Beta 5 In Women With Unexplained Recurrent Pregnancy Loss.

Objectives: To examine the relationship between endometrial integrin beta 5 level and risk of recurrent pregnancy loss. Method: The descriptive, prospective, observational, case-controlstudy was conducted at the Kafrelsheikh University Hospital, Egypt, from January to May 2022, and comprised women aged up to 35 years with at least 1 live birth delivery beyond 20-week gestation with normal thyroid and prolactin levels. Age-matched normal fertile women were enrolled as controls. All the participants were subjected to detailed history and complete clinical examination. Endometrial integrin beta 5 was assessed using an antibody sandwich enzyme-linked immunosorbent assay. Data was analysed using SPSS 20. RESULTS: Of the 50 subjects, 25(50%) were cases with a mean age of 26.72±2.64 years, and 25(50%) were controls with a mean age of 25.36±2.16 years. The integrin beta 5 level was significantly lower among the cases than the controls (p<0.05). The best cut-off level of serum integrin beta 5 was ≤2.5765 with area under curve 0.886, sensitivity 88%, specificity 76%, positive predictive value 78.6%, negative predictive value 86.4%, and accuracy 82%. CONCLUSIONS: Therewas an inverse correlationbetween endometrial integrinbeta 5 andthe risk ofrecurrentpregnancy loss.

Comparison of different detection methods of monkey B virus antibody / 中国比较医学杂志

Objective Monkey B virus(BV), also known as Cercopithecine herpesvirus 1,is an important zoonotic pathogen.According to the national standard, antibodies are detected using BV as an antigen.However, the preparation of BV antigen is very stricted due to biosafety issues.Therefore, in this study, we used alternative antigens to detect the BV antibody by serological assay and verified their specifity and sensitivity.Methods A total of 135 blood samples from rhesus monkeys were tested by two ELISA method (BV and HVP2) and enzyme immunosorbent assay (EIA)method.The positive and suspicious samples were verified by immuno-fluorescence assay (IFA), Western blot and immunoblotting technique using HSV-1 gC1 purified glycoprotein as an antigen.Results The positive rates of HVP2-ELISA, BV-ELISA and HSV-1-EIA were 32.6%, 37.8% and 34.8%, respectively.Consistant result of the three detection method accounted for 91.1% (123/135), and the positive result were confirmed by IFA And WB.There were 12 suspicious samples,in which 33.3% (4/12) were verified to be positive.Conclusions Compared with BV antigen, the sensitivity and specificity of the alternative antigen HSV-1 are moe close than HVP2.Positive and suspicious samples should be verified by several method to avoid missed detection.

Determination of EBV serostatus prior to kidney transplantation: comparison of VIDAS®, LIAISON® and immunofluorescence assays.

Immunosuppression following solid organ transplantation reduces T cell-mediated immune control of Epstein-Barr Virus (EBV), which may then drive development of post-transplant lymphoproliferative disease. Serology plays a key role in determination of risk of outgrowth of such lesions following transplantation. The study compared the VIDAS(®) (bioMérieux) and LIAISON(®) (DiaSorin) enzyme immunoassays (EIAs) and immunofluorescence assays (IFA; MBL-Bion) in the kidney transplantation setting. Sera from 100 live kidney donors [51 males; age range 20-82 years (mean 51.2 years)] and 100 cadaveric kidney recipients [70 males; age range 17-77 years (mean 51.0 years)] were tested. Overall proportional agreement ranged from 96% to 100% for VIDAS(®) and LIAISON(®). Sensitivity ranged from 91% to 100% and 92% to 100% for VIDAS(®)/IFA and LIAISON(®)/IFA, respectively. The VIDAS(®) and LIAISON(®) approaches gave similar results. Such automated random access EIAs are well suited to busy clinical virology laboratories and rapid determination of donor and recipient EBV serostatus prior to transplantation.

Infertilidad e infección por Chlamydia trachomatis en mujeres sexualmente activas del estado Carabobo, Venezuela / Infertility and infection with Chlamydia trachomatis in sexually active women from Carabobo state, Venezuela

Introducción: Chlamydia trachomatis es una bacteria intracelular obligada cuyo único hospedador es el hombre, capaz de producir la afección llamada clamidiosis, infección que puede ser aguda o crónica, que causa con gran frecuencia en mujeres infertilidad. La situación, puede ser grave para Venezuela donde la información epidemiológica es escasa y limitada a un pequeño número de estudios y a datos oficiales incompletos. Esta investigación pretendió determinar en mujeres sexualmente activas con infertilidad infección por C. trachomatis como posible causa. Materiales y métodos: fue un estudio descriptivo en 198 mujeres de distintas comunidades del estado Carabobo, Venezuela con infertilidad primaria o secundaria. Se recogieron datos de identificación y de antecedentes obstétricos y a través del método inmunoenzimático indirecto se determinaron anticuerpos IgM e IgG anti C. trachomatis. Resultados: la edad promedio fue de 34,3±5,9 años, 38,4% resultaron con infección, de estas 72,3% estaban en el período fértil de su vida reproductiva y eran positivas para ambas Ig. De estas 43,7% lograron embarazo, pero 35,4% terminaron en aborto y 5,2 en embarazo ectópico. Discusión: existe alta prevalencia y asociación entre infección por C. trachomatis e infertilidad en mujeres del estado Carabobo, Venezuela, como consecuencia directa del carácter mayoritariamente asintomático de la infección clamidial y de su evolución hacia la enfermedad inflamatoria pélvica condición determinante de infertilidad femenina primaria, de abortos y embarazos ectópicos, tratables en estas mujeres pues la mayoría estaba en la fase activa de la infección y en pleno período fértil.

Introduction: Chlamydia trachomatis is an obligate intracellular bacterium whose only host is human, capable of producing the condition called chlamydiosis, infection can be acute or chronic, very often causes infertility in women. The situation may be serious for Venezuela where epidemiological information is scarce and limited to a small number of studies and official data incomplete. Materials and Method: this research sought to determine in sexually active women with infertility caused by C. trachomatis as a possible cause. It was a descriptive study of 198 women from different communities in the state of Carabobo, Venezuela with primary or secondary infertility. Identification data were collected and obstetric history and through indirect immunosorbent assay were determined IgM and IgGanti C. trachomatis. Results: the average age was 34.3 ± 5.9 years, 38.4% were infected, of these 72.3% were in the fertile period of their reproductive lives and were positive for both Ig. Of these 43.7% achieved pregnancy but 35.4% ended in abortion and 5.2 in ectopic pregnancy. Discussion: there is high prevalence and association between infection for C. trachomatis and infertility in women of the Carabobo, Venezuela state, as direct consequence of the majority asymptomatic character of the chlamidial infection and of your evolution towards the inflammatory pelvic illness determining condition of feminine primary infertility, of abortions and ectopic pregnancies, friendly in these women because the full age were in the active phase of the infection and in the middle of fertile period.

Protective effect of chelerythrine against ethanol-induced gastric ulcer in mice.

The quaternary benzo[c]phenanthridine alkaloid, chelerythrine (CHE), is of great practical and research interest because of its pronounced, widespread physiological effects, primarily antimicrobial and anti-inflammatory, arising from its ability to interact with proteins and DNA. Although CHE was originally shown to possess anti-inflammatory properties, its effects on acute gastric ulcer have not been previously explored. The aim of the present study is to evaluate the protective effect of CHE on ethanol induced gastric ulcer in mice. Administration of CHE at doses of 1, 5 and 10mg/kg bodyweight prior to ethanol ingestion dose-dependently inhibited gastric ulcer. The gastric mucosal lesion was assessed by ulcer area, gastric juice acidity, myeloperoxidase (MPO) activities, macroscopic and histopathological examinations. CHE significantly reduced the gastric ulcer index, myeloperoxidase activities, macroscopic and histological score in a dose-dependent manner. In addition, CHE also significantly inhibited nitric oxide (NO) concentration, pro-inflammatory interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-α) level in serum and gastric mucosal in the mice exposed to ethanol induced ulceration in a dose-dependent manner. In addition, immunohistochemical analysis revealed that CHE markedly attenuated the overexpression of nuclear factor-κB in gastric mucosa of mice. It was concluded that CHE represents a potential therapeutic option to reduce the risk of gastric ulceration. In addition, acute toxicity study revealed no abnormal sign to the mice treated with CHE (15mg/kg). These findings suggest that the gastroprotective activity of CHE might contribute in adjusting the inflammatory cytokine by regulating the NF-κB signalling pathway.