Sources of psychrotrophic bacteria on meat at the abattoir.
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Abattoirs↗
Biomedical subjects
J C Harrison
Publications and source records attributed to J C Harrison.
Coliforms from hides and meat.
Coliform tests were performed on 85 hide and 75 meat samples. IMViC reactions were determined on isolates from positive confirmed and fecal tests, and strains other than Escherichia coli were identified. Strains typed as Aerobacter aerogenes types I and II were identified as Enterobacter cloacae (51.4%), Klebsiella pneumoniae (21.5%), Enterobacter aerogenes (15%), and Enterobacter liquefaciens, Serratia, and unidentified coliforms (12.1%). K. pneumoniae appeared to be responsible for less than 1% positive fecal tests.
Enterobacter↗
Response of leukopenic rabbits to pneumococcal toxin.
Pneumolysin, a cytolytic toxin from Streptococcus pneumoniae, has previously(1) been shown to interact in vitro with polymorphonuclear leukocytes in a variety of ways behaving as a chemotactic, lethal or lytic agent, depending on its concentration. In this study we examined the effect of leukopenia induced by administration of nitrogen mustard on the response of the rabbit to conjunctival instillation and intracorneal injection of pneumolysin. Control animals responded to instillation of crude and pure toxin with intense erythema and chemosis, and production of a thick discharge. No discharge and only traces of erythema and chemosis were noted in leukopenic animals. Leukopenic rabbits also showed a decreased capacity to respond to intracorneal injection of the toxin, particularly striking in the first 48 hours following pneumolysin injection, when opacification, discharge formation, chemosis, and erythema were found to be markedly less than in control animals. We conclude that the polymorphonuclear leukocyte plays a key role in the response of the rabbit eye to pneumococcal toxin. This system appears to be a good model for study of the inflammatory response to microbial products.
Animals↗
Amniotic fluid embolism: maternal mortality revisited.
Amiotic fluid embolism is still a significant cause of maternal mortality. It must be suspected in all cases of sudden maternal collapse. For successful resuscitation, surgical delivery should be performed without delay.
Adult↗
Cataract extraction with lens implantation at Biloxi Veterans Affairs Medical Center: experience of ophthalmology residents.
We reviewed and analyzed the visual acuities achieved and the complications after 949 cataract operations done by ophthalmology residents during the transitional period in which an intracapsular cataract extraction technique was replaced by an extracapsular one. The available records of all patients from 1982 through 1991 were reviewed. Eighteen intracapsular and 896 extracapsular cataract extractions were performed, followed by 906 primary and 43 secondary implants. Posterior capsular rupture occurred in 6.3% of the cases with vitreous loss in 3.4%. Cystoid-macular edema was the most common postoperative complication. The postoperative visual acuity was 20/40 or better in 91% of cases, and it was better than the preoperative visual acuity in 99.5% of cases. With appropriate training and supervision, a resident can achieve good results by doing extracapsular cataract extractions with lens implantations. These results were comparable to those reported by others.
Cataract Extraction↗