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R. O. Ayeni*, A. O. Popoola and J. K. Ogunmoyela
Abstract: We provide criteria under which affinity hemodialysis could provide a stable infected equilibrium.[...] Read More.
Keywords: Affinity hemodialysis, HIV/AIDS envelope protein, stability criteria.
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E. A. Ophori*, P. Imade and E. J. Johnny
Abstract: This study was to investigate the prevalence of asymptomatic bacteriuria (ASB) in patients clinically diagnosed with type 2 diabetes mellitus and to determine the antibiotic sensitivity pattern of bacterial isolates. One hundred and thirty type 2 diabetics comprising 56 males and 74 females (aged between 30- 59 years) attending the Central Hospital, Benin- City, Nigeria were studied. Mid-stream urines were collected from patients who gave informed consent aseptically into sterile McCartney bottles and examined microscopically, culturally using standard techniques and tested for glucose, post-prandial glucose, protein and ketone using a dipstick. Samples were cultured on blood agar, McConkey agar and cysteine lactose electrolyte deficient (CLED) media and incubated at 37°C aerobically for 24 h. Isolates were tested against antibiotics which included tetracycline, chloramphenicol, ciprofloxacin and cotrimoxazole by the disc diffusion method. White blood cells (WBC) and red blood cells (RBC) were detected in 87 and 6% of samples while ketones and proteins were 6% and 96% respectively present in the samples. Significant bacteriuria (≥105 cfu /ml) was observed in some samples. Bacteria isolated included Escherichia coli with a prevalence of 56.9%, followed by Klebsiella pneumoniae (12.7%), Staphylococcus aureus (8.5%) and Proteus sp. (6.3%). E. coli, K. pneumoniae, S. aureus and Proteus sp. were most sensitive to cotrimazaxole, amoxicillin, nalidixic acid and ciprofloxacin but a large number of bacteria were resistant to tetracycline, chloramphenicol and ampicillin. The misuse of some antibiotics is a major factor responsible for bacterial resistance. Therefore, treatment of ASB in diabetics must be by drugs prescribed by physicians after proper laboratory analysis.[...] Read More.
Keywords: Bacteriuria, type 2 diabetes mellitus, antibiotics, Nigeria, white blood cell, red blood cell.
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S. E. Baidoo, S. C. K. Tay, K. Obiri-Danso and H. H. Abruquah*
Abstract: Intestinal helminths are among the most common and widespread of human infections, contributing to poor nutritional status, anaemia and impaired growth. Anaemia and iron deficiency in pregnancy is a major public health problem in developing countries, but their causes are not always known. The objective of this study was to assess the prevalence and severity of anaemia and iron deficiency and their association with helminths, among pregnant women in the Ashanti region of Ghana. A cohort study was carried out in the Sekyere, East district of the Ashanti region of Ghana. One hundred and eight (108) pregnant women were followed until 5-10 weeks postpartum, during the period of (December 2005 - November 2006). Haemoglobin and total serum iron concentrations were evaluated in venous blood samples, and helminths infections evaluated in stool samples in each trimester using standard methods. Most of the 108 pregnant women, 54.9% were found to be anaemic. The highest prevalence of anaemia and low iron stores (57.4 and 32.4%, respectively) were found in the second trimester. Only 17.6% had evidence of helminths infection, with NECATOR AMERICANUS (hookworm) being the commonest (13.9%). There was a significant association between hookworm infection and low iron stores. The study concluded that hookworm infection is a strong predictor of iron status. These findings reinforce the need to provide anthelminthic therapy to infected women before conception as a public health strategy in reducing the prevalence of hookworm infection, and in addition to providing nutritional and iron supplements to effectively control anaemia in pregnancy.[...] Read More.
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F. A. Sebastião, F. Pilarski* and M. V. F. Lemos
Abstract: Flavobacterium columnare, the etiologic agent of columnaris disease, has a broad geographical distribution and accounts for a large number of mortalities in fish species. This study aimed to generate a faster method for diagnosis of columnaris through isolation and characterization of the F. columnare 16S rDNA gene from bacteria isolated from Nile tilapia (Oreochromis niloticus), tambaqui (Colossoma macropomum) and matrinxã (Brycon amazonicus). The bacteria were characterized biochemically and by PCR-RFLP. For isolation, rasping with “swab” was performed directly on the characteristic lesions and the cephalic kidney of the fish then transferred to culture medium suitable for Flavobacterium. DNA was extracted for PCR and digestion with restriction enzymes. Altogether, 37 isolates were obtained. Biochemical assays included testing of absorption of Congo red, production of flexirrubin, production of H2S, nitrate reduction and motility. The results indicated that the isolates can be classified as F. columnare. The phylogram generated by the PCR-RFLP technique showed three main branches among of the F. columnare isolates. Therefore, the use of PCR-RFLP for identification of the bacteria was shown to be a more efficient and rapid tool than current biochemical techniques, which are time consuming and often inconclusive.[...] Read More.
Keywords: Fish, Flavobacterium columnare, PCR-RFLP, 16S rDNA.
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Akram Hassan Mekki, Abdullahi Nur Hassan* and Dya Eldin M Elsayed
Abstract: This is a descriptive laboratory based case study carried out in Khartoum state hospitals during the period of June, 2007 to April, 2008. The study aimed to evaluate emergence of ESBL among multi drug resistant Escherichia coli and Klebsiella species causing nosocomial UTI. Hundred strains of multi drug resistant (MDR) E. coli and Klebsiella species causing nosocomial urinary tract infections (UTIs) from two main hospitals from Khartoum (Omdurman teaching hospital and Fedail Hospital) were included in this study. Susceptibility testing was performed against antibiotics commonly used in treatment of urinary tract infections. E. coli, Klebsiella pneumoniae and Klebsiella oxytoca (49, 38 and 13% respectively) were among the studied isolates. β-Lactamase was produced by all isolates; high resistance level for 3rd generation cephalosporin was noticed. ESBLs were detected in high prevalence among all multi drug resistant E. coli and Klebsiella species isolates 53%. All isolates were found sensitive to Imipenem and Meropenem. In this study it’s recommended that developing guidelines for the early phenotypic detection of ESBL in microbiology laboratories and seeking knowledge of antibiotic susceptibility pattern for empirical antibiotic therapy. Further studies about ESBL occurrence among UTIs are also recommended.[...] Read More.
Keywords: ESBL in Sudan, multi-drug resistant, MDR Escherichia coli, MDR Klebsiella spp, urinary tract infection, beta lactamase.
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Mahmoud M. M. Zaky*, Fathy A. Mansour and Kenneth M.Persson
Abstract: Lake Manzala is considered one of the most important coastal Lakes in Egypt. This study revealed the highly polluted condition of water and fish samples taken from three of the more important sites (Kapoty, Bashtier and Mataryia areas), representative to human activity and different ecosystems in the Lake water environment. Total suspended solids (TSS), ammonia and nitrates, of the samples taken showed figures exceeding the national and international standards. The samples from the study yielded high levels of bacterial content, which were found through plate counts and by using different growth media such as agar and endo agar. Total viable bacteria (TVB) reached more than 104 cfu/ml in water samples and 105 cfu/g in fish samples, particularly in Kapoty and Mataryia areas. Faecal coliform counts reached 102 cfu/ml in water samples and 103 cfu/g in fish samples. Statistical analysis revealed a positive correlation between Aeromonas spp. counts and some minerals, such as chlorides, calcium and magnesium (r = 0.9, 0.8, and 0.6 respectively; p 0.001), which revealed the interactions and adaptability of such organisms to environmental factors. A total of 88 isolates from Aeromonas differential agar were identified using the API 20E system; 17% of these isolates were Aeromnas hydrophila, and most of these strains were resistant to three or more antibiotics including pencillinG, ampicillin and chloramphenicol. Isolation of plasmid DNA from these strains of A. hydrophila, showed that most harboured plasmids ranging from less than 2.2 - 4 KbP. Such findings could explain the adaptability and multi-drug resistance of such bacterial pathogens, which may have an impact on the course of infection and active causal agents of diarrhoeal diseases in this important coastal area of Egypt on the Mediterranean Sea.[...] Read More.
Keywords: Aeromonas hydrophila, multi-drug resistance, plasmid DNA, Lake Manzala.
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Ihsan E. Alsaimary*, Ahmed M. Alabbasi and Jassim M. Najim
Abstract: One hundred twenty patients with chronic suppurative otitis media (CSOM) in Basrah, 65(54.2%) males and 55(45.8%) Females, with male: females ratio (1.2:1) and 60 individual without ontological problems as control group were included in this study, which was done during the period of March, 2009 to January, 2010. This Include collection of aural swab samples, culturing of samples, identification of causative agents species and antibiotic sensitivity. Gram's negative bacteria were the commonest microorganisms; it comprises (60%). Pseudomonas aeruginosa was common causative agent (19.04%), followed by Staphylococcus aureus (16.7%) and Klebsiella spp. (14.3%). Mixed infection was found in high percent (74%), in which P. aeruginosa and other microorganisms were more common. The antibiotic sensitivity pattern showed that P. aeruginosa was sensitive to Ciprofloxacin, amoxicillin +clavulanic acid and gentamicin, while other is appeared resistant, S. aureus was sensitive to ciprofloxacin, amoxicillin+clavulanic acid, erthomycin, cephalexine and it is resistant to pencillin and ampicillin, klebsiella species were sensitive to ciprofloxacin, amoxicillin +clavulanic acid ,gentamicin,while resistant to tetracycline.[...] Read More.
Keywords: Antibiotics, bacteria, otitis media.
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S. O. Onemu, A. O. Ogbimi and E. A. Ophori*
Abstract: This study was designed to examine the microbiological quality and semen indices of seminal fluids of sexually active males in Benin City, Nigeria, and to determine the relationship between the presence of pathogenic micro -organisms and semen parameters. Semen was collected from 229 volunteer sexually-active men, aged 19 - 33 years (mean 24.73 ± 3.4) in Benin City, Nigeria. Volunteers were advised to abstain from sex for 3 days before semen collection and also from alcohol (including other factors that may affect semen quality). A ten-fold serial dilution of well mixed semen in physiological saline (NaCl 0.15 M) was inoculated onto blood agar, heated blood agar, MacConkey agar, Sabouraud dextrose agar slants and mycoplasmal agar enriched with 30% serum and supplemented with 100 µg/ml ceftazidine for the isolation of Mycoplasma species. All inoculated culture media were incubated at 37°C for 24 - 48 h. Isolates were characterized and identified by standard microbiological methods and antimicrobial sensitivity test was carried out by the disc diffusion method. The determination of spermatozoa concentration, motility characteristics and other accompanying cells was carried out adopting standard procedures. Micro-organisms ( 3 × 106 cfu/ml) were isolated from 80/229 (34.9%) of participants’ semen. The isolates were Staphylococcus aureus 47/80 ( 58.8%). Escherichia coli 10/80 (12.5%) Klebsiella spp. 6/80 (7.5%), Candida albicans 5/80 (6.3%) and Mycoplasma species 12/80 (15.0%). Sensitivity to antimicrobial agents was highest among isolates to ciprofloxacin and pefloxacin. No activity was demonstrated with amoxicillin and tetracycline. Spermatozoa concentration was zero in 10.4% of the study population, 28.4% had concentrations below World Health Organization threshold for spontaneous male fertility. Semen with pathogenic micro-organisms had significantly lower (p < 0.001) spermatozoa concentrations and motility parameters. Therefore, the study suggests that the presence of pathogenic micro-organisms in semen is a marker of deterioration in semen parameters and development of male infertility.[...] Read More.
Keywords: Microbiology, pathogenic microorganisms, semen, sexually active males, antimicrobial, Nigeria.
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Amirmorteza Ebrahimzadeh Namvar, Babak Asghari, Shoshtari Zadeh and Abdolaziz Rastegar Lari,*
Abstract: Carbapenams are one of the ß-lactamase antibiotic resistances to penicillin that were introduced in 1980 to the medical world. Imipenem- a semi-synthetic derivative of thienamycin- is one of the most important broad spectrum ß-lactamase in carbapenems. The irregular usage of drugs, especially in these types of gram-negative bacteria will lead to a serious problem in the treatment of pathogenic bacteria. Comparison of in vitro activity of imipenem productions is the aim of this study. 135 strains of various gram positive and gram negative bacteria collected from Hashemi Nejad Hospital in Tehran were studied. Initially strains were identified by phenotypic methods; then Disk Diffusion and MIC methods based on instructions of Forum France Microbiology were used. From 135 samples, urine samples (36%) were the most and trachea (4%) was the lowest. Among gram-negative bacteria isolated, both E. coli and Pseudomonas (37%) had most common and Enterobacter (1%) was the lowest. By disk diffusion method, Supranem, Taynam and Mast pharmaceutical products, showed similar result, but the results related to internal company disks were different. 20% of the total bacteria studied had MIC over 8 mg (resistant). Due to results of this study using standard dicks and antibiotic powder (Imipenem/Cilastatin sodium) (Supranem) or (Tienam) is recommended. [...] Read More.
Keywords: ß-lactamase, antibiogram, imipenem.
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J. Leimkugel, V. Racloz*, L. Jacintho da Silva and G. Pluschke
Abstract: Despite expansive studies over the past century, the epidemiology of invasive meningococcal disease (IMD) has remained elusive in some of its aspects. The following review attempts to summarize the past and current trends in the etiology of IMD. Data was collected through the analysis of peer-reviewed studies and surveillance data on national, sub-national and regional levels performed using various search engines such as pubmed (www.ncbi.nlm.nih.gov/pubmed/), regional WHO homepages (www.who. int) and department of health websites. Despite the establishment of improved surveillance, the reasons for the differences in IMD epidemiology between endemic and epidemic settings are not fully under-stood. Factors influence the timing and distribution of epidemics including climatic, socio-economic and cultural factors involving changes in human lifestyle, natural growth of the human population, crowding and increased mobility. These have also strongly affected the global population structure of Neisseria meningitides and are still currently responsible for changing patterns in IMD epidemiology. In recent years, much interest has arisen on the subject due to both the development of conjugate vaccines and to the continuing occurrence of outbreaks, many of them in industrialized countries. With antimicrobial resistance on the rise, effective and affordable vaccines along with continued surveillance are needed to help combat this complex disease.[...] Read More.
Keywords: Meningococcal meningitis, epidemiology, vaccines, antimicrobial resistance, surveillance.
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