important aspect of sperm function such as motility and capacitation appear to be mediated at least partially though hyaloronic acid (ha). present study investigated effects of different doses of ha on sperm motility and vitality in human. sperm was obtained from 20 male from ivf clinic in imam khomeini hospital. sperm motility and vitality in human semen was analyzed according to who criteria ...

background ochratoxins belong to a group of mycotoxins produced as the secondary metabolites by filamentous fungi, such as aspergillus and penicillium. these toxins may be teratogenic, mutagenic, hepatotoxic, nephrotoxic, and may have immunosuppressive effects and pose a serious health problems to exposed humans and animals. objectives the present study aimed to determine the level of ochratoxi...

Summary Cryptosporidiosis is a disease caused by the protozoan of the genus cryptosporidium and is characterized by gastroenteritis and respiratory symptoms in humans. In an investigation on 140 human faecal samples from urummie town of west Azarbyejan area, the role of cryptosporidium in causing diarrhea in adults and children has been demonstrated and the results discussed.

background and objective: although transfusion therapy has lead to great improvement in longevity for hemophiliacs, but there have been tragic setbacks especially from transmission of human immunodeficiency virus (hiv) and hepatitis c virus (hcv) .hiv was reported to increase the rate of hcv-related liver failure by 4.2 times. in this study, we aimed to determine the seroprevalence of hiv and h...

escherichia coli (e. coli) is a normal inhabitant of the gastrointestinal tract of vertebrates, including humans. phylogenetic analysis has shown that e. coli is composed of four main phylogenetic groups (a, b1, b2 and d). group a and b1 are generally associated with commensals, whereas group b2 is associated with extra-intestinal pathotypes. most enteropathogenic isolates, however, are assigne...

the purpose of this study was to examine the evolution of antimicrobial activity of flower extract of hibiscus sabdariffal against antibiotic-resistant escherichia coli and staphylococcus aureus that isolates from the urinary tract infection by microtiterplate method. all 42 strains 30 e.coli and 12 s. aureus isolated from urine culture of hospitalized patients in zabol ( zabol, south-eastern i...

up to date, there are four pharmacologically characterized subtypes of muscarinic receptors (m1, m2, m3 and m4). in our study we have investigated muscarinic receptor subtypes in smooth muscle layers of human stomach. isolated preparations of longitudinal and circular muscle layers from human stomach were used. acetylcholine, bethanechol, carbachol, pilocarpine and ahr -602 produced concentrati...

conclusions infection with hmpv and rsv are most frequent infections among pediatric patients with respiratory tract symptoms. coinfection with these viruses may exacerbate the clinical symptoms and increase hospitalization rates, especially in children younger than one year old. results the hmpv and rsv were detected in 44 (15.7%) and 84 (30.0%) samples, respectively. coinfection with both vir...