Localization of source of immunosuppressive factor in the human male reproductive tract

The source of the immunosuppressive factor (ISF) in the human male reproductive tract which suppresses various in vitro immune responses has been identified. We describe here the prostatic localization of this factor, based on investigating the fractions of split ejaculates, ejaculates of individuals with blocked epididymis and the secretions of the prostate obtained by prostatic massage.     

An efficient and stable iodine-doped nickel hydroxide electrocatalyst for water oxidation: synthesis,electrochemical performance,and stability

The design of oxygen evolution reaction (OER) catalysts with higher stability and activity by economical and convenient methods is considered particularly important for the energy conversion technology. Herein, a simple hydrothermal method was adopted for the synthesis of iodine-doped nickel hydroxide nanoparticles and their OER performance was explored. The electrocatalysts were structurally characterized by powder X-ray diffraction analysis (P-XRD), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDX), and BET analysis. The electrochemical performance of the electrocatalysts was assessed by cyclic voltammetry, linear sweep voltammetry, and electrochemical impedance spectroscopy. The abundant catalytic active sites, oxygen vacancies, low charge-transfer resistance, and a high pore diameter to pore size ratio of iodine-doped Ni(OH)₂ were responsible for its excellent catalytic activity, whereby OER was initiated even at 1.52 V (vs. RHE) and a 330 mV overpotential was needed to reach a 40 mV cm⁻² current density in 1 M KOH solution. The material also exhibited a low Tafel slope (46 mV dec⁻¹), which suggests faster charge-transfer kinetics as compared to its counterparts tested under the same electrochemical environment. It is worth noting that this facile and effective approach suggests a new way for the fabrication of metal hydroxides rich in oxygen vacancies, thus with the potential to boost the electrochemical performance of energy-related systems.

Oxygen evolution reaction mechanism under alkaline conditions over the iodine-doped Ni(OH)₂ surface.     

Retracing Realistic Disaster Scenarios from Archival Sources:A Key Tool for Disaster Risk Reduction

Disaster scenarios are constructed by integrating natural hazard phenomena and social science sources of information.We profiled 51 natural hazard events of nin...     

Serum levels of shed Her2/neu protein in men with prostate cancer correlate with disease progression

PURPOSE: We determined the association between serum levels of shed Her-2/neu protein and disease progression in men with prostate cancer. MATERIALS AND METHODS: Serum from 279 patients enrolled in a prospective serum bank and database at New York University Medical Center was analyzed using the Food and Drug Administration approved Immuno-1 Her-2/neu assay. Patients were classified by the Prostate-Specific Antigen Working Group model into 5 groups, namely group 1-no evidence of cancer in 60, group 2-clinically localized disease in 67, group 3-prostate specific antigen increasing after therapy and no clinical metastases in 77, group 4-clinical metastases and castration sensitivity in 42, and group 5-clinical metastases and castration resistance in 33. A cutoff of 14 ng/ml for normal serum Her-2/neu was established based on the 95th order statistic in group 1. RESULTS: Of 279 patients 37 (13.3%) had increased serum Her-2/neu, that is 5%, 11.9%, 10.4%, 16.7% and 33.3% in groups 1 to 5, respectively. There was a significant difference between patients with (groups 4 and 5) and without (groups 2 and 3) clinical metastases (p = 0.006). In group 5 patients serum Her-2/neu was significantly higher than in group 2 patients (p <0.02). The risk of cause specific death increased significantly with each unit increase in serum Her-2/neu (p <0.001). CONCLUSIONS: Increased serum Her-2/neu correlates with the presence of metastatic disease and it may indicate an increased risk of death in patients with castrate, metastatic prostate cancer. The detection of serum Her-2/neu is a minimally invasive alternative to tumor sampling for identifying potential candidates for anti-Her-2/neu treatment strategies. Further studies are needed to optimize this assay for application in the clinical setting.     

Hepatobiliary disorders among naïve patients with ulcerative colitis in Upper Egypt

Background and study aimsAssociation of ulcerative colitis (UC) with hepatobiliary disorders is well recognised. The most common hepatobiliary complications of inflammatory bowel disease (IBD) are fatty liver infiltration and cholelithiasis. The prevalence of liver dysfunction in IBD remains unclear. The aim of the study is to try to identify the frequency and risk factors of hepatobiliary disorders among patients with UC in Upper Egypt.Patients and methodsWe prospectively analysed 33 patients with newly diagnosed UC of Tropical Medicine and Gastroenterology Department, Assiut University Hospital. For all participants, the following were conducted: clinical evaluation, abdominal ultrasonography (US) examination and laboratory investigations. Risk factors of hepatobiliary disorders were identified using univariate, then multivariate analysis.ResultsThe frequency of hepatic disorders (fatty liver and elevated liver chemistry) was 75.8% in study patients while the frequency of biliary disorders (gallbladder stones and gallbladder wall thickening) was 54.5%. A higher risk of hepatic disorders was observed with older age (odds ratio (OR) 14, 95% confidence interval (CI) 2–124). A higher risk of biliary disorders was observed with UC severe activity index (OR 27, 95% CI 3–292).ConclusionsThe frequency of hepatobiliary disorders in patients with UC exceeded what was previously reported. High frequency of hepatic disorders was related to older age, while that of biliary disorders was related to UC activity.