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Biomedical subjects

K Nakamoto

Publications and source records attributed to K Nakamoto.

At least 127 records · Page 7Linked to original sources
PubMed1979

Incidence of chicken coccidia from broiler houses in Japan, 1973-1977.

A survey was made on the incidence of coccidial oocysts in 11,365 fecal samples from Japanese broiler houses during five years from 1973 to 1977. The Eimerian species were identified by a combination of two methods, examination of oocyst morphology and chicken passage test. Oocysts were detected from 7,526 (66.2%) of the samples tested during five years. Annual variation was statistically significant at the 5% level. Coccidial incidence during July to September (corresponding to summer season) was found to be higher than that of other seasons. With regard to regional variation, incidence found in the north-eastern half of Japan was lower than that in the south-western half. Oocyst detection rate increased up to 40 days of age in chickens and kept plateau thereafter. Eimeria acervulina predominated throughout the years, seasons, regions and age of chickens. Other species of Eimeria were subjected to wide fluctuation while the survey was carried out.

Animals↗
PubMed1977

Clearance of sulfamethoxazole in eggs and tissues of chickens.

Clearance of sulfamethoxazole (SMX, or sulfisomezole) in eggs and tissues of chicken after withdrawal of the drug which was medicated feed additively (at 0.2 or 0.4%) or administered intramuscularly (100 mg./kg., twice daily) for 5 successive days was determined using a fluorescamine reagent. Clearance patterns of SMX were found to be different between albumen and yolk. SMX level in albumen diminished linearly to below 0.1 p.p.m. (sensitivity level) by 5 days after the cessation of medication. On the other hand, SMX level in yolk remained at a plateau until 4 days, and thereafter decreased linearly to below 0.1 p.p.m. by 10 days. SMX levels in most tissues diminished below 0.1 p.p.m. by 3 days and those in kidney and skin by 4 days. Clearance patterns in tissue were quite similar to those in egg albumen. Proportion of acetylated-SMX to total-one in both albumen and yolk tended to increase up to 10% with the lapse of time after drug withdrawal. Acetylation was high in liver (36.5-43.6%), spleen skin and fat, but low in breast muscle and kidney (3.7-11%) in the groups of feed addition; while acetylation was low in liver of the group of intramuscular injection.

Administration, Oral↗
PubMed1975

False atrial dissociation (the Deitz-Marques phenomenon) and its dependence on dyspnea.

Three cases of false atrial dissociation (the Deitz-Marques phenomenon) were presented to show the dependence of this phenomenon on dyspnea. 2) The pseudo-P wave of the Deitz-Marques phenomenon coincided with the beginning of inspiration. 3) In a case of silicotuberculosis, the length of the pseudo-fibrillation was nearly equal to that of laborious inspiration. 4) In a case of aspiration pneumonia, every second cardiac contraction was synchronized with the beginning of inspiration two hours before death. 5) In a case of hyperpotassemia, the pseudo-P wave persisted even after the disappearance of the sinus P wave. 6) The pseudo-P wave was not affected by retrograde activation of the atria by the A-V junctional impulse.

Aged↗