Results of periodontal therapy related to tooth type.

Certain teeth or groups of teeth are prone to develop more severe periodontal destruction than other teeth in the same individuals. A test was made to assess if these same teeth or groups of teeth also respond less favorably to periodontal therapy than other teeth. Data from a longitudinal study of periodontal therapy for 78 patients over 8 years were analyzed with regard to effect of tooth types on treatment results.

Regional coronary perfusion and bioenergetics in experimental atherosclerosis.

The effects of experimental coronary atherosclerosis on myocardial high energy phosphates and regional coronary perfusion and oxygen delivery were studied. Hypercholesterolemic (HC) New Zealand white rabbits developed mild to moderate coronary vascular disease in 4 months when serum cholesterol levels were maintained at 1500--2000 mg/dl. Resting left ventricular levels of creatine phosphate, adenosine triphosphate (ATP), and the cellular energy charge were unaltered after 2 months of diet but were decreased after 4 and 6 months.

Comparison of results following three modalities of periodontal therapy related to tooth type and initial pocket depth.

Results following three modalities of periodontal therapy (subgingival curettage, modified Widman flap surgery, and pocket elimination or reduction surgery) in 78 patients over 8 years were compared for variations in pocket depth and clinical attachment level related to tooth types (maxillary molars, mandibular molars, maxillary biscupids, mandibular biscupids, maxillary anterior teeth, mandibular anterior teeth). The analysis was based on a classification of three severity groups according to initial crevice or pocket depth (Class I, 1-3 mm; Class II, 4-6 mm; and Class III, 7-12 mm) and with patient's means of measurements being the experimental units for the statistical analysis. Reduction in pocket depth and gain of clinical attachment for pockets 4 mm or deeper occurred following all three methods of treatment, and was well sustained over 8 years.

Massive gastrointestinal hemorrhage from a diverticulum of the appendix.

A patient with massive gastrointestinal hemorrhage found to be bleeding from a diverticulum of the appendix is presented. Appendectomy was curative and pathologic changes were those associated with colonic diverticular hemorrhage. A review of the literature reveals this to be a previously unreported cause of gastrointestinal bleeding.

Parasitic infection of Filaroides osleri, Capillaria aerophila and Spirocera lupi in coyotes from the Southwestern United States.

A total of 181 coyotes (Canis latrans) was examined for helminth parasites Filaroides osleri, Capillari aerophila, and Spirocerca lupi. Coyote carcasses were obtained from Kansas, western Oklahoma-northern Texas, Colorado, New Mexico, Arizona and southern California. Cysts of F.

Some social factors related to control of diabetes mellitus in adult Jamaican patients.

A population of 103 adult diabetic patients was interviewed at the Outpatient Clinic for diabetic patients of the University Hospital of the West Indies to examine the effects of severity of the illness and social variables, such as facilities at home, education attained, employment status, informal medication, and understanding of the illness in relation to its control. Patients were classified as severe if there were clinical evidence of vascular or neurologic complications of diabetes and as mild if there were no complications. Control of diabetes was regarded as good if the patients were free from or had less than 2+ glycosuria and as poor if they had had 2+ or more glycosuria during the six months before the study.

Isolation of a branched-chain alpha-keto acid decarboxylase from rat liver.

An enzyme which catalyses oxidative decarboxylation of branched-chain alpha-keto acids was extracted from rat liver mitochondria with the aid of NaClO4. Purification yielded a product which appeared homogenous upon electrophoresis. Some kinetic data are reported; however, the enzyme is inactive with alpha-ketoisovalerate.

Different protection rates in various groups of volunteers given subunit influenza virus vaccine in 1976.

Different rates of protection were observed in various groups of volunteers given trivalent subunit influenza virus vaccine during an epidemic caused by A/Victoria/3/75 strains of influenza virus in Melbourne, Victoria, Australia, in 1976. The degree of protection varied from 80% protection from infection in one group to a moderation in the severity of clinical illness in a geriatric group. The response to immunization may depend on the previous experience of the vaccinees, and it may be necessary to use different dose schedules in different groups for optimal protection.

The effect of age on the absorption and excretion of lead.

The retention (the proportion of ingested or administered lead found in the carcass at slaughter) of lead in the carcass and tissues of rats given 203Pb intraperitoneally or by mouth was measured over a period of a few days at 3-month intervals for 9 months from weaning. Total carcass retention of 203Pb administered intraperitoneally reached a minimum at 6 months of age, but the retention of 203Pb in blood, liver, and kidney changed little with time. When 203Pb was given by mouth, the fraction of the dose absorbed and the fraction retained in the carcass reached a minimum at 6 months, but the recovery in the tissues continued to decrease up to the end of the experiment.

Dietary protein and lead retention.

The effects of dietary protein content on lead retention were studied in young rats. In experiments lasting between 3 and 6 weeks, rats given diets containing lead and 20% casein were fed ad libitum or were pair fed with rats given diets containing 6.5 or 7.

Lungworms in coyotes on the Great Plains.

A total of 395 coyotes (Canis latrans) was examined in the field for lungworms (Filaroides osleri and Capillaria aerophila) with 60 trachea and bronchial trees returned to the laboratory for detailed examination. Coyote carcasses were obtained from eight central states (Oklahoma, Colorado, Wyoming, Iowa, South Dakota, Nebraska, Texas, and three regions of Kansas). Cysts of F.

Oxidative phosphorylation and aspects of calcium metabolism in myocardia of hypercholesterolaemic swine with moderate coronary atherosclerosis.

Aspects of myocardial oxidative phosphorylation and Ca2+ metabolism were studied in a swine model in which coronary atherosclerosis was induced by a combination of denudation of the endothelium of the coronary arteries plus 7--11 months of feeding a high fat--high cholesterol diet. By microscopy, a moderate amount of coronary atherosclerosis was present at the time of sacrifice, and 2 of the 14 swine hearts had old myocardial infarcts. Myocardial mitochondria from grossly normal areas showed partial uncoupling and decreased state 3 O2 uptake with 3 of 4 substrates tested.

Aphasia: a divergent semantic interpretation.

The present paper reinterprets aphasia relative to the divergent and convergent components of Guilford's model of behavior. It suggests that some aphasiologists have defined aphasia as a convergent semantic disorder. They have determined the presence or absence of an aphasic impairment on the basis of each individual's ability to recognize and reproduce previously learned material and to converge upon one correct answer.