AIM To investigate the bactericidal effects of calcium chelated N-acetylneuraminic acid-glycomacropeptide (CaG-NANA) against Helicobacter pylori (H. pylori). METHODS For manufacture of CaG-NANA, calcium (Ca) was combined with glycomacropeptide (GMP) by chelating, and N-acetylneuraminic acid (NANA) was produced with Ca-GMP substrate by an enzymatic method. The final concentration of each compo...

Two previously unrecognized species of the genus Hymenolepis are described based on specimens obtained from murid rodent species Bullimus luzonicus , Apomys microdon , and Rattus everetti collected on Luzon Island, Philippines. Hymenolepis bicauda n. sp. differs from all known Hymenolepis spp. in relative position of the poral dorsal and ventral osmoregulatory canals, gravid uterus occupying le...

OBJECTIVE To investigate whether increased knowledge and use of public health measures promoted for cholera prevention is reflected in lower prevalence of parasitic infection in households in a community in the state of Tamaulipas, Mexico, that is close to the border with the United States of America. METHODS Between 1994 and 1997, fecal samples from 438 children were collected through conven...

Neuraminidase A (NanA) is an important virulence factor that is anchored to the pneumococcal cell wall and cleaves sialic acid on host substrates. We noted that a secreted allele of NanA was over-represented in invasive pneumococcal isolates and promoted the development of meningitis when swapped into the genome of non-meningitis isolates replacing cell wall-anchored NanA. Both forms of recombi...

background: rodents have important role as reservoirs of different parasites. the aim of this study was to determine helminth parasites of abundant rodents in meshkin-shahr, ardabil province northwest iran. methods: from april 2014 to march 2015; 205 rodents including 118 meriones persicus , 63 mus musculus and 24 cricetulus migratorius were collected, using live traps. all rodents were dissect...

the prevalence of various intestinal helminthiases among the inhabitants of 7 villages was compared with that among the nomadic bakhtiari tribe with its migratory habits. stool examination of 736 nomads and 784 persons of the same ethnic group settled in 7 villages showed that, among the settled population, the pre­valence of infection with ascaris, trichostrongylus spp., trichuris trichiura, h...

The degradation rates of N-acetylneuraminic acid (NANA) were investigated in plasma membranes and in the total protein of rat liver and Morris hepatoma 7777. The plasma membranes of Morris hepatoma 7777 could not be isolated by known methods useful for isolation of rat liver plasma membranes. Therefore, a modified method was developed. The specific activity of 5'-nucleotidase as a plasma membra...