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Tandon A Singh A Atrishi E Saxena SK Mathur A 《International journal of experimental pathology》2002,83(1):39-46
A unique factor, human T cell hypoglycaemic factor (hTCHF), has been shown to produce hypoglycaemia during the convalescent stage in the plasma of patients with Japanese encephalitis virus (JEV) infection. The present study was undertaken to investigate the ability of T cells from fresh peripheral blood mononuclear cells (PBMC) of such patients to produce hTCHF. The PBMC, as well as the individual subpopulations, were cultured for 24 h and the culture supernatants (CS) were assayed for hypoglycaemic activity. The activity was observed in the CD8+ T cells. The hypoglycaemia in JE-confirmed patients coincided with the gradual rise in circulating glucagon level, with no significant alterations in insulin, growth hormone and cortisol levels. The hTCHF was purified by ion exchange chromatography and the purified protein was observed as a approximately 25 kDa band on SDS-PAGE. Secretory hTCHF in the sera of patients and T cell CS was present in 88% of convalescent serum samples. We conclude that during the convalescent stage of JEV infection, a unique factor, hTCHF, is secreted by activated CD8+ T cells from patients and that this is responsible for the development of hypoglycaemia. 相似文献
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Morphine Stimulates Mesangial Cell TNF-α and Nitrite Production 总被引:2,自引:0,他引:2
Background: Intravenous opiate abusers are susceptible to develop heroin and HIV-associated nephropathies; however, the role of opiates in the development of these kidney lesions is not clear. Patients with opiate addiction are prone to recurrent infections. Methods: The effect of morphine was studied on the generation of TNF- with or without LPS (lipopolysaccharide) by cultured mouse mesangial cells. In addition, the effect of morphine was evaluated on mesangial cell nitrite production. To evaluate the role of opiate receptors, we studied the effect of naloxone and naltrexone on mesangial cell TNF- and nitrite production. To determine the role of TNF- on mesangial cell nitrite production, we examined the effect of anti-TNF- antibody on morphine-induced nitrite production. Assay of TNF- and nitrite production was carried by ELISA and Griess method respectively. Results: Morphine alone did not enhance the generation of TNF- by mesangial cells, however, an enhanced (P < 0.001) TNF- production was observed when mesangial cells were first treated with morphine for 18 h and then activated further with LPS. Maximum release of TNF- was seen at a concentration of 10–12 M of morphine. Opiate receptor antagonists (naloxone and naltrexone) inhibited the effect of morphine. Morphine also amplified (P < 0.0002) the effect of LPS on mesangial cell nitrite production. Anti-TNF- antibody attenuated morphine induced nitrite generation. Conclusion: We conclude that morphine stimulates the generation of TNF- by LPS-activated mesangial cells. This effect of morphine seems to be opiate receptor mediated and has a downstream effect in the form of mesangial cell nitrite generation. The present in vitro study provides the basis for a hypothesis that morphine may be playing a role in the development of heroin and HIV-associated nephropathies. 相似文献
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Prolonged social isolation during the COVID-19 lockdown has adversely impacted the mental, social, and physical wellbeing of the global populace. Coping with mental and physical stressors amidst the global lockdown is especially strenuous for the Lesbian, Gay, Bisexual, Transgender, and more (LGBT+) community, who are frequently subjected to social stigma and minority stress. Systematic stigma and discrimination place LGBT+ individuals at higher risk for deleterious behaviors, such as substance abuse (e.g., injection drug use, smoking, alcohol) and risky sexual practices (e.g., anal/vaginal/oral sex). Maladaptive coping behaviors consequently increase the chances of HIV/AIDS risk among LGBT+ individuals, compared to heterosexual individuals. LGBT+ individuals Living with HIV/AIDS perpetually face higher rates of unemployment, income disparity, and intimate partner violence. Prolonged home confinement, and impaired accessibility to healthcare, legal, and criminal justice services during lockdown may deplete the quality of life of LGBT+ individuals Living with HIV/AIDS. Therefore, it is critical that multidisciplinary service providers, including health professionals, employers, social services providers, educational institutions and community organizations, move toward online service delivery, so that homebound HIV-positive LGBT+ individuals are secured with a wide range of care options. Non-judgemental, tele-counseling may bridge the gap to mental health services. Community clinics catering to HIV-positive and/or LGBT+ clients may consider precociously supplying essential amenities, such as Preexposure (PrEP)/postexposure prophylaxis (PEP), condoms, emergency contraception, and sterile needles. Lastly, efforts directed at the sustenance of at-risk/HIV-positive LGBT+ health should persevere, even after the pandemic. 相似文献
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Geraniol dehydrogenase, the specific enzyme involved in geraniol to citral TRANS (geranial) transformation, activity was monitored in various lemongrass cultivars differing in amounts and relative percentages of citral and geraniol in their essential oils. The enzyme activity had a positive and significant association with citral to geraniol, and geranial to geraniol ratios. The results are suggestive of a strong relationship between the enzyme activity and essential oil quality in lemongrass cultivars. 相似文献
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Anju Huria Khosla MD Krishna Sangwan MD Shanti Devi Ahuja MBBS 《The Australian & New Zealand journal of obstetrics & gynaecology》1997,37(3):294-296
EDITORIAL COMMENT: This study of amnioinfusion during labour complicated by the known passage of meconium shows that the technique seems clinically worthwhile, even in a centre without facilities for electronic fetal heart monitoring or scalp blood pH and blood gas analysis. The series is small and more data from larger studies is required to test the conclusions reported by the authors.
Summary: A prospective study to see the safety and efficacy of transcervical amnioinfusion in labour complicated by meconium-stained amniotic fluid (MSAF) was carried out in a teaching hospital with limited resources. Fifty patients in labour with meconium-stained amniotic fluid and fulfilling the inclusion criteria (vertex presentation, gestational age of 36 weeks or more, no medical or obstetrical complications and normal fetal heart rate at time of inclusion) were taken for the study; 25 patients received amnioinfusion. The control group received only supportive therapy. Labour outcome was compared in the 2 groups. The incidence of Caesarean section was seen to be decreased but neonatal parameters showed no significant difference in the amnioinfusion group. 相似文献
Summary: A prospective study to see the safety and efficacy of transcervical amnioinfusion in labour complicated by meconium-stained amniotic fluid (MSAF) was carried out in a teaching hospital with limited resources. Fifty patients in labour with meconium-stained amniotic fluid and fulfilling the inclusion criteria (vertex presentation, gestational age of 36 weeks or more, no medical or obstetrical complications and normal fetal heart rate at time of inclusion) were taken for the study; 25 patients received amnioinfusion. The control group received only supportive therapy. Labour outcome was compared in the 2 groups. The incidence of Caesarean section was seen to be decreased but neonatal parameters showed no significant difference in the amnioinfusion group. 相似文献