Twelve thermosensitive H1 plasmids from strains of Salmonella typhi that had caused outbreaks of chloramphenicol-resistant typhoid fever in Vietnam, Thailand and India mediated citrate utilization (Cit+) in a prototrophic Escherichia coli K 1 2 strain but not in the S. typhi strains from which they were derived. Four HI plasmids from a similar outbreak in Mexico diflered from the Far Eastern pl...

BACKGROUND Chromium picolinate could be effective in clomiphen citrate resistant PCOS patients. OBJECTIVE To compare the effects of chromium picolinate vs. metformin in clomiphen citrate resistant PCOS patients. MATERIALS AND METHODS The present randomized clinical trial was performed on 92 women with clomiphen citrate-resistant PCOS at the clinics which were affiliated to Shiraz University...

We performed unilateral oophorectomy (UO) in three patients with polycystic ovary syndrome (PCOS) and long-standing infertility. The indication for performing this procedure was a combination of ovarian pathology and the long-standing infertility. All three patients were resistant to clomiphene citrate and before UO all patients had been treated unsuccessfully with gonadotrophins and in-vitro f...

Objective This study was performed to compare the success level of laparoscopic ovarian drillind by means of standard and dose-adjusted (on the basis of ovarian volume) treatment methods among infertile clomiphene resistant PCO women. MaterialsAndMethods This randomized clinical trial was conducted on infertile clomiphene citrate resistant PCOS women in the Gynecology department of Imam Reza Ho...

abstract food preservatives are often added to food as preservation method. mostly one preservative alone cannot preserve a product effectively. so it is required to create a preservation system to overcome limitations derived from each preservative. using proper selection of different preservatives may lead to significant practical benefits. in this investigation, resistant strain of bacillus ...

Over hundred isolates of the filamentous fungus Aspergillus niger were examined for calcium citrate productivity under submerged culture conditions in 1-L Erlenmeyer flasks. The isolate IIB-46 was selected for improvement through ultraviolet (UV) light-induced mutagenesis. Among viable mutants, strain 19 exhibited the best citrate productivity, and it was subjected to ethyl methane sulphonate (...

polycystic ovary syndrom (pcos) is characterized by infertility, oligomenorrhea, and hyperandrogenism. clomiphene citrate (cc), an antiestrogen, is first-line treatment for pcos, if cc fails to induce ovulation, laparascopic electrocautery of the ovaries is offered. in this prospective controlled study, 52 women with clomiphen-resistant pcos (group 1) and 46 women with regular menstrual cycles ...