April 2014
Evaluation of antibacterial activities of some Nigerian medicinal plants against some resistant bacteria pathogens
The search for the healing properties of plants is an ancient idea that has remained even till date. In this work, the antibacterial activity of leaf extracts of Corchorus olitorius, Pterocarpus santaliniodes, Pentaclethra macrophylla and Azadirachta indica was tested against resistant strains of Staphylococcus aureus, Escherichia coli, Klebsiella species and Streptococcus species using agar well diffusion method. The...
April 2014
In vitro activities of tigecycline against Brucella spp. in an endemic area
Human brucellosis remains a common zoonotic disease worldwide; it has been estimated to cause 500,000 new cases annually. In Saudi Arabia, brucellosis is endemic in different parts of the country due to consumption of unpasteurized milk. In this study, we investigated in vitro activity of tigecycline (TIG) against Brucella spp. isolated at Microbiology Laboratory, King AbdulAziz Medical City over the last 15 years. A...
April 2014
Antifungal activities of Bacillus subtilis isolated from some condiments and soil
Bacillus subtilis are beneficial organisms that can be used as biological control agents. A total of 62 species of Bacillus were isolated from four condiments (Ogiri, Iru, Okpehe and Dawadawa) and soil samples. The isolates were identified as Bacillus subtilis (44%), Bacillus megaterium (16%), Bacillus licheniformis (14%), Bacillus pumilus (23%) and Bacillus cereus (3%). Nine strains of Bacillus subtilis were selected...
April 2014
Transcript abundance of bovine NRAMP1 and iNOS genes among Brucella sero-reactive cattle and buffalo
Brucella abortus and Brucella melitensis are the causative agents associated with brucellosis among cattle and buffaloes, respectively. NRAMP1 and iNOS are the best characterized genes conferring resistance against several intracellular organisms. The present study was undertaken to analyze transcript abundance of NRAMP1 and iNOS genes among Brucella sero-reactive cattle and buffalo. Our studies revealed that...
April 2014
Pharmaceutical compounds effects on Nitrosomonas europaea nitrification process
The present study had as purpose the investigation of the impact of four highly used pharmaceutical active compounds (PhACs) on the nitrification, a crucial process in wastewater treatment plants (WWTPs). Nitrosomonas europaea is known to be sensitive to toxic compounds and was used to examine the effects of four different PhACs (trimethoprim, ibuprofen, acetaminophen and 17-α-ethinylestradiol) on microbial...
April 2014
Genetic variation analysis of hemagglutinin and neuraminidase of human influenza A/H3N2 virus in Hong Kong (1997-2006)
We analyzed the phylogeny, amino acid variations, positive selection, and glycosylation patterns of hemagglutinin (HA) and neuraminidase (NA) of A/H3N2 in Hong Kong from 1997 to 2006. The results suggest that continuity and latency of influenza viruses might be the reasons why different influenza viruses co-circulate within the same season. Many amino acid mutations were retained for two or more successive years. The...
April 2014
Risk factors favoring the presence of Listeria monocytogenes in Colombian pork-meat processing plants
We tracked Listeria monocytogenes as a microbiological risk factor in pork processing plants. The five plants analyzed were located in main areas for meat processing in Colombia. Prevalence of L. monocytogenes was 11.46% (36/314), represented by serotypes 4b (6/36, 16.7%), 4d/4e (10/36, 27.8%), 4b/4d/4e (4/36; 11.1%), 3a (3/36, 8.3%), 3c (1/36, 2.8) and 1/2c/3c (9/36, 25%); 4/36 isolates (11.1%) were assumed as possible...
April 2014
Characterization of Yersinia spp. strains isolated from pigs in Abidjan, Côte d’Ivoire, West Africa
The aim of this study was to evaluate the prevalence and determine the molecular virulence of the pathogenic Yersinia spp. strains recovered from raw pig samples from a slaughterhouse in Abidjan, Côte d’Ivoire. A total of 460 raw pig samples including 200 tongues, 150 tonsils, 110 feces, were characterized phenotypically and genotypically for virulence genes. The strains were also tested for the presence of...
April 2014
Tegumental ultrastructure of Nephrostomum ramosum Sonsino, 1895 (Trematoda: Echinostomatidae) from Ardeola ibis ibis
During an investigation on intestinal flukes of cattle egret, Ardeola ibis ibis excysted metacercaria and adult worms belonging to family Echinostomatidae Nephrostomum ramosum were recovered. The tegumental surface of N. ramosum was described for the first time using scanning electron microscopy (SEM). SEM observations of excysted metacercaria and adult worms showed some basic differences, excysted metacercaria is...
April 2014
Culture-dependent characterization of microbes in biofilms from selected microhabitats in Rivers State, Nigeria
Biofilms from different microhabitats such as air conditioner outlets, drainage system pipes, laboratory and kitchen sinks were sampled twice from the same sample sites at interval of four weeks. The sample sites were University of Port Harcourt, Abuja campus, University of Port Harcourt Teaching Hospital and Alakahia town, Rivers State. The significance of the study was to determine the various groups of bacteria and...
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