Meynet & Arnould (1993a) have suggested that Wolf-Rayet (WR) stars could significantly contaminate the Galaxy with F. In their scenario, F is synthesized at the beginning of the He-burning phase from the N left over by the previous CNO-burning core, and is ejected in the interstellar medium when the star enters its WC phase. Recourse to CNO seeds makes the F yields metallicity-dependent. These ...

To explore the radioprotective effect of a standardized North American ginseng extract (NAGE) on human peripheral blood lymphocytes (PBL), a micronuclei (MN) assay was conducted in PBL obtained from 12 volunteers. NAGE (50-1000 microg/mL) and WR-1065 (1 mM and 3 mM) were applied to PBL cultures at 0 h and 90 min post-irradiation. It was found that (1) the baseline MN yield of PBL ranged from 14...

AIMS Right ventricular (RV) systolic dysfunction has been shown to be an independent predictor of clinical outcome in patients with chronic heart failure (CHF), and cardiac metaiodobenzylguanidine (MIBG) imaging also provides prognostic information. We aimed to evaluate the long-term predictive value of combining RV systolic dysfunction and abnormal findings of cardiac MIBG imaging on outcome i...

OBJECTIVE To critically review the literature regarding inherited thrombophilia and recurrent fetal loss. DESIGN English-language literature review. PATIENT(S) Women who experienced repeated pregnancy wastage. INTERVENTION(S) Aspirin, glucocorticoids, heparin, and IV immunoglobulin for the prevention of miscarriage. MAIN OUTCOME MEASURE(S) Live birth, miscarriage, preeclampsia, and preg...

Background: In the present study the amount of requested blood products in major departments of Imam Reza Medical Center, Kermanshah, Iran has been studied to evaluate the necessity of these requests and also the amount of blood products wastage because of unnecessary requests. Materials and Methods: In the present study the information related to 4832 unit of requested blood products from Ira...

The purpose of this study was to clarify which myocardial histological findings associated with dilated cardiomyopathy (DCM) are reflected in quantitative 201Tl myocardial SPECT. We obtained studied SPECT images from 21 patients with DCM 10 minutes and 2 hours after they received an injection of 111 MBq 201Tl at rest. We calculated the percent coefficient of variation of myocardial 201Tl counts...

We examined (a) the fraction of and extent to which vaccinations were administered earlier than recommended (age-invalid) or with too short intervals between vaccine doses (interval-invalid) in countries of the World Health Organisation (WHO) African Region and (b) individual- and community-level factors associated with invalid vaccinations using multilevel techniques. Data from the Demographic...

We have demonstrated that S-2-(3-aminopropylamino)ethylphosphorothioic acid (WR-2721) given to mice prior to ionizing radiation inhibits development of radiation-induced sarcomas. The right hind legs of C3Hf/Kam mice were exposed to single doses of gamma-rays ranging from 3400 to 5700 rads. Thirty min before irradiation, approximately one-half of the mice were given i.p. injections of WR-2721 (...

Massive stars, supernovae (SNe), and long-duration gamma-ray bursts (GRBs) have a huge impact on their environment. Despite their importance, a comprehensive knowledge of which massive stars produce which SN/GRB is hitherto lacking. We present a brief overview about our knowledge of mass loss in the HertzsprungRussell Diagram (HRD) covering evolutionary phases of the OB main sequence, the unsta...