Melasma is frequently observed in Indian men. The main causative factors among the male patients appeared to be sun-exposure and family history. Melasma in men is definitely less common than in women, but shares the same clinicohistopathological characteristics as in women.

The increase in air pollution over the years has had major effects on the human skin. Various air pollutants such as ultraviolet radiation, polycyclic aromatic hydrocarbons, volatile organic compounds, oxides, particulate matter, ozone and cigarette smoke affect the skin as it is the outermost barrier. Air pollutants damage the skin by inducing oxidative stress. Although human skin acts as a biological shield against pro-oxidative chemicals and physical air pollutants, prolonged or repetitive exposure to high levels of these pollutants may have profound negative effects on the skin. Exposure to ultraviolet radiation has been associated with extrinsic skin aging and skin cancers. Cigarette smoke contributes to premature aging and an increase in the incidence of psoriasis, acne and skin cancers. It is also implicated in allergic skin conditions such as atopic dermatitis and eczema. Polyaromatic hydrocarbons are associated with extrinsic skin aging, pigmentation, cancers and acneiform eruptions. Volatile organic compounds have been associated with atopic dermatitis. Given the increasing levels of air pollution and its detrimental effects on the skin, it is advisable to use strategies to decrease air pollution.

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ObjectivesSelf-collected vaginal swabs can facilitate diagnosis of vaginal discharge (VD) in resource-limited settings, provided reliability of the method is established. The aim of this study was to evaluate the concordance between self-collected and physician-collected vaginal swabs for aetiological diagnosis of VD and to determine the prevalence of bacterial vaginosis (BV), vulvovaginal candidiasis (VVC) and trichomonas vaginitis (TV).MethodsA total of 550 females (median age: 32 years; range: 18–45 years) attending two sexually transmitted infection/reproductive tract infection (STI/RTI) clinics with VD from January 2015 to May 2016 were included in the study after obtaining written informed consent. Swabs were self-collected by patients after instructions and subsequently by a physician under speculum examination. Samples were processed for standard bedside tests, Gram staining, wet mount and culture (gold standard) according to the national guidelines. Concordance between the two methods was determined by the Cohen’s kappa value.ResultsBV, VVC and TV were diagnosed in 79 (14.4%), 144 (26.2%) and 3 (0.5%) patients, respectively. VVC coexisted with BV in 58 (10.5%) patients. There was no coinfection of TV with BV or VVC.Candida albicanswas isolated in 84 (58.3%) VVC cases. Sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of self-collected swabs for diagnosing BV was 91.1%, 100%, 100% and 98.5%, respectively, while for theC. albicansVVC and TV, sensitivity, specificity, PPV and NPV all were 100% as compared with physician-collected swabs. Highly concordant results were obtained between two methods by the Kappa values of 0.95 (BV), 0.99 (VVC) and 1.0 (TV).ConclusionThe comparative performance of self-collected and physician-collected vaginal swabs establishes self-collection of samples for BV, VVC and TV as a viable alternative tool in the management of STIs/RTIs, especially in peripheral and resource-constrained settings. This would be effective in implementing the diagnostic approaches for STIs/RTIs in community-based surveillance studies at national or regional level and therefore strengthening the National STI/RTI Control Programme.

Dasatinib, a dual Src/Abl tyrosine kinase inhibitor, has significant antileukemic effects against various imatinib mesylate-resistant BCR/ABL mutants. Despite well-documented inhibitory effects of dasatinib on BCR/ABL kinase, the exact downstream cellular events leading to generation of its potent antileukemic effects remain to be defined. We provide evidence that p38 Map kinase (MAPK) pathway is activated leading to increased upregulation of MLK3, MKK3/6, MSK1 and Mapkapk2, upon treatment of BCR/ABL expressing cells with dasatinib, including cells expressing various imatinib-resistant mutants, except for T315I. Our data demonstrate that such dasatinib-dependent activation of p38 MAPK and its effectors plays a critical role in generation of antileukemic responses, since pharmacological inhibition of p38 or siRNA-mediated knockdown of its expression reverse dasatinib-mediated apoptosis, cell cycle arrest and anti-proliferative effects. p38MAPK inhibition also reversed dasatinib-induced suppression of CML patient-derived leukemic CFU-GM progenitor growth in vitro, as well as BCR/ABL expressing KT-1 cell derived leukemic progenitor growth . Altogether, our findings suggest a critical role for p38 MAPK pathway in generation of antileukemic effects of dasatinib, and raise the possibility that development of novel means to enhance p38 MAPK activation in BCR/ABL expressing cells may be an approach to promote antileukemic responses and, possibly, reverse T315I mutation-mediated resistance.

Background: Metabolic syndrome worsens complications in psoriasis patients by predisposing them to cardiovascular diseases. Psoriasis has been widely associated with metabolic syndrome; however, it has still not been proven owing to a limited number of studies and some of those reporting conflicting results. Objective: Psoriasis has reportedly been associated with metabolic syndrome; however, it has yet not been established beyond doubt owing to conflicting literature. The present meta-analysis of observational studies aims to evaluate the prevalence of metabolic syndrome in psoriasis patients and establish an inferring point that psoriasis patients are certainly susceptible to metabolic syndrome. The study will benefit clinicians to assess and monitor psoriasis patients for several associated comorbid conditions and in its treatment. Methods: A systematic web search for ‘Psoriasis’, ‘Metabolic Syndrome’, ‘Hypertension’, ‘Plasma Glucose’, ‘Dyslipidaemia’, ‘Waist Circumference’ was performed, collecting all original observational studies on humans up to April 30, 2018. Depending on the inclusion and exclusion criteria, articles were screened for eligibility. Due to the presence of significant heterogeneity, the Odds Ratio (OR) was calculated using a random-effect model with Der-Simonian and Laird method. The statistical heterogeneity was determined using I2 statistics. Comprehensive Meta-Analysis Software, Version 3 was used to perform all the analysis. Results: Sixty-three studies encompassing 15,939 psoriasis patients and 103,984 controls were included in this meta-analysis. Among them, 30.29 % of psoriasis patients were reported with metabolic syndrome in comparison to 21.70 % of subjects in the control group. The present study clearly indicates an increased prevalence of metabolic syndrome among psoriasis patients (OR: 2.077 [95% CI, 1.84 - 2.34]). Conclusions: The findings support the fact that psoriasis patients have a higher incidence of metabolic syndrome. Our study also recommends that psoriasis patients should be regularly monitored for metabolic syndrome complications and its associated risk factors such as hypertension, raised triglyceride, lowered HDL Cholesterol, increased fasting plasma glucose, and waist circumference.

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