Background A growing body of evidence suggests a deteriorating effect subthreshold amyloid-beta (Aβ) accumulation before the onset clinical symptoms Alzheimer’s disease (AD). Despite association between Aβ-dependent pathway and APOE ε4 allele, modulating impact this allele on associations Aβ retention, cortical atrophy, neuropsychological performance is unclear. This study aimed to explore diff...

the aim of the present study was to prepare new cluster (b6c4si) as an antibiotic carrier. density functional theory (dft) method at the b3lyp level of theory in conjugate with the 6-311g** basis set was used to evaluate the interaction between b6c4si cluster and penicillin. binding parameters, homo, lumo and homo- lumo gap were calculated. results show the ‍ b6c4si homo–lumo gap value of 0.13...

background: salmonella is one of the major causes of human diseases related to food consumption. salmonella typhi and s. para-typhi are causes of typhoidal and para-typhoidal infections. some infected individuals recovering from this infection become temporary or permanent carriers, harboring the organisms in the gallbladder, biliary tract, or rarely in their intestines. the aims of this study ...

background: methicillin resistant staphylococcus aureus (mrsa) is a common major human pathogen that causes hospital-acquired infections. characterization and typing of the staphylococcal cassette chromosome has led to a better understanding of mrsa infection cycle in hospital. the meca-associated hypervariable region size classifies mrsa isolates that colonized in nasal carriers. objectives: t...

pasteurellosis of cattle and buffalo named as hemorrhagic septicemia (hs) is an acute and fatal disease causes by pasteurella multocida serotypes b2 and e2 in different countries. hs is occurred in all parts of the world except australia. economic importance of disease in asia is more than africa. bovine pasteurellosis is endemic in northern areas (gilan and mazandaran), west and east azarbayja...

As the carrier of China’s agricultural civilization, village has high cultural value. However, imbalance rural protection and development leads to destruction its overall How coordinate relationship between needs be studied. This study reviews history summarizes problems existing in development. It is believed that on basis extracting characteristic elements for landscape protection, mechanism ...

background staphylococcus aureus (sa) is frequently found on normal human skin and mucous membranes. methicilline resistance s. aureus (mrsa) strains have spread in many hospital isolates world wide since 1970s. hospital personnel tend to have higher colonization rates than the general population. colonized residents and personnel are sources for dissemination of organism. materials and methods...

objective: this study was designed to investigate rbc indices and hba2 levels in parents of major beta-thalassemia patients to detect possible silent beta- thalassemia carriers and examine its potential impact on the premarital genetic counseling. materials and methods: this cross sectional study was performed at children medical center from 2004 to 2006. after genetic counseling and getting in...