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Biomedical subjects

M Akan

Publications and source records attributed to M Akan.

26 records · Page 2Linked to original sources
PubMed1998

Motile aeromonads in the feces and carcasses of broiler chickens in turkey.

Motile Aeromonas spp. were surveyed in chicken feces, carcasses, scalding water, and chilling water during slaughtering in a commercial processing plant in Turkey. Fecal and carcass samples of 351 chickens from 15 different flocks were examined by selective isolation techniques. All of the 15 flocks were positive for motile aeromonads. Motile aeromonads were detected in 14.8%, 90.5%, and 100% of fecal, carcass, and chilling water samples, respectively, while scalding water samples were negative for these organisms. Aeromonas hydrophila was the predominant species in both feces (51.9%) and carcass (66.9%) samples, followed by A. caviae and A. sobria. These results suggested that during the slaughtering process the spread of motile aeromonads from the intestinal contents to carcasses via processing water caused a heavy contamination of chicken carcasses.

Abattoirs↗
PubMed1994

Antimicrobial susceptibility of Pasteurella haemolytica and Pasteurella multocida isolated from pneumonic ovine lungs.

The in vitro susceptibilities of Pasteurella haemolytica biotypes A and T and P multocida from pneumonic ovine lungs to penicillin, ampicillin, oxytetracycline, chloramphenicol, erythromycin, kanamycin, neomycin, gentamicin, streptomycin and lincomycin were determined by the disk diffusion method. All the isolates were sensitive to chloramphenicol and resistant to lincomycin. The isolates of P haemolytica biotype A were consistently more sensitive to penicillin, ampicillin, oxytetracycline, erythromycin and streptomycin than those of biotype T.

Animals↗
PubMed1994

In vitro infection of human fetal membranes with Candida species.

To assess whether Candida species can penetrate intact fetal membranes under in vitro conditions, Candida albicans, Candida tropicalis, Candida guilliermondii, Candida pseudotropicalis and Candida glabrata were inoculated onto the surface of the maternal side of the membranes obtained from 4 pregnant women undergoing repeat cesarean section. After incubation under culture conditions, membranes were evaluated by histological examination. C. albicans inoculated onto the maternal side penetrated and passed to the fetal side and caused some degeneration of the structure of the membrane epithelium. The other four Candida species grew heavily on the maternal surface but did not penetrate and invade the membranes. This effect of C. albicans on fetal membranes may explain the potential mechanism in the development of Candida infections of the amniotic fluid, fetal membranes and possibly the fetus.

Amniotic Fluid↗
PubMed1994

Studies of the pathology and microbiology of pneumonic lungs of lambs.

The characteristics of lung lesions of slaughtered lambs and the presence of microorganisms in the lesions were investigated. Pneumonia was detected in 500 (3.6%) of 13,588 lambs. Macroscopical lesions were of atypical pneumonia and were often seen in the pars cranialis of lobus cranialis dexter. Histologically, proliferative pneumonia was detected in most cases and was often accompanied by exudative characteristics. Pasteurella haemolytica was isolated from 258 (51.6%) and Mycoplasma ovipneumoniae from 215 (43.0%) of 500 pneumonic lungs. In 131 (26.2%) cases both organisms were isolated from same samples. A close relationship was found between P. haemolytica and exudative inflammation (p < 0.05).

Animals↗
PubMed1992

Reversible expression of flagella in Campylobacter spp.

The in vitro phase variation of flagella and the transition rates between flagellate and aflagellate phenotypes in Campylobacter species including C. jejuni, C. coli, C. lari (thermophilic campylobacters), C. fetus subsp. fetus, C. fetus subsp. venerealis and C. hyointestinalis were investigated. The change from the flagellate to aflagellate phenotype was detected in all of the 12 Campylobacter strains studied. When measured in a motility medium, flagellate to aflagellate transition in thermophilic campylobacters, C. fetus and C. hyointestinalis strains occurred at a rate of 1.8 x 10(-3) to 7.5 x 10(-3), 3.0 x 10(-4) to 7.8 x 10(-4) and 1.8 x 10(-5) to 7.7 x 10(-6) per cell per generation, respectively. Transition from aflagellate to flagellate phenotype occurred at a rate of 5.8 x 10(-6) to 9.3 x 10(-6) per cell per generation in thermophilic campylobacters and 1.0 x 10(-6) to 1.5 x 10(-6) in C. fetus strains. No reversion from aflagellate to flagellate phenotype could be detected in C. hyointestinalis strains. It was concluded that the ability to reversibly express flagella was inherent in the wild-type strains and the transition rates for both directions were consistent for each strain.

Campylobacter↗
PubMedDate not supplied

Simultaneous multiple pilomatrixomas.

We report a 10-year-old girl with synchronous multiple pilomatrixomas. Pilomatrixomas are generally solitary tumors; synchronous multiple tumors are very rare. Multiple or recurring tumors may be found in association with various syndromes, and multiple tumors may be familial. Concurrent disorders were not identified in our patient and the etiology of her pilomatrixomas was not understood. Thorough examination of the patient and long-term follow-up are necessary with these tumors.

Child↗
PubMedDate not supplied

Effect of analgesia administration timing on early post-operative period characteristics: a randomized, double-blind, controlled study.

This study investigated the effect of time of analgesia administration in 64 patients undergoing total abdominal hysterectomy. Patients received standard general anaesthesia and were divided randomly into two equal groups. At the time of fascia closure, patients in the intra-operative (Iop) group received 0.5 mg/kg pethidine intravenously. On arrival in the post-anaesthesia care unit, the same dose of pethidine was given to patients in the post-operative (Pop) group. All patients then used a patient-controlled analgesia pump to administer pethidine analgesia as required. Times to extubation, response to verbal stimulation and orientation, post-operative pain scores and analgesic consumption were recorded. Times to extubation and response to verbal stimulation were significantly longer in the Iop group. Pain scores, analgesic consumption and additional analgesic requirements were significantly higher in the Pop group in the first 2 h post-operatively. In conclusion, intra-operative administration of pethidine provided better pain management than post-operative administration.

Adolescent↗