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Biomedical subjects

P J Cunningham

Publications and source records attributed to P J Cunningham.

16 recordsLinked to original sources
PubMed1991

Individuals with mental retardation in residential facilities: findings from the 1987 National Medical Expenditure Survey.

Data from the 1987 National Medical Expenditure Survey, a large survey designed to yield national estimates pertaining to the use of medical care, were used to compare residents of state institutions with residents of other types of residential facilities. Findings concur with past studies: Residents of state institutions were more severely retarded and more likely to have other disabilities and functional impairments than were residents of other residential facilities. However, many residents of other facilities had severe impairments. Relatively more persons with severe impairments resided in these facilities in states where small facility beds were relatively plentiful.

Activities of Daily Living↗
PubMed1989

Clinical evaluation of Scotchbond: three-year results.

In a previous paper, the one-year retention of composite resin in non-undercut Class V abrasion lesions mediated by self-cure Scotchbond dentine bonding agent without enamel etching was reported. The present paper reports the three-year results. Initially, a total of 310 restorations was placed using Silux, Silar, Ketac-Fil and Fuji II. The percentage cumulative loss of the restorations at two and three years, respectively, was: Silux 27, 30; Silar 58, 58; Ketac-Fil 0, 0; Fuji II 4, 14. Over the total study period, there was a high loss rate of composite restorations in the first six months, and a tendency to increased loss over one to three years. There was a significant increase in marginal discoloration, assessed photographically, over the three-year period, and caries was present around some restorations.

Acrylic Resins↗
PubMed1988

Correlated responses of carcass and reproductive traits to selection for rate of lean growth in swine.

Mass selection for an index of increased postweaning average daily gain and decreased backfat thickness was practiced for five generations. Litter size and weight for 221 gilt litters, birth weight and nipple number for 2,242 piglets and weaning weight at 42 d of age for 2,111 pigs were recorded. Carcass measurements were taken on 331 pigs. Differences between means of the lines (select control) were regressed on cumulative selection differential of the index. These regression coefficients were negative (P greater than .10) for total number born, number born alive, number weaned per litter, nipple number and carcass backfat thickness. Coefficients were positive (P greater than .10) for individual pig and litter weights at birth and weaning and for the carcass traits of length, longissimus muscle area and percentage of ham and loin. Absolute values of realized genetic correlations of index with traits evaluated were all .35 or less except the correlation with carcass backfat, which was -.84. None of these was significant; therefore, index selection for lean growth should have little effect on litter size and weight but may have a beneficial effect on carcass backfat.

Adipose Tissue↗
PubMed1978

Eye protection.

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Dental Care↗
PubMed1977

Determination of the optimum dietary proportions of lysine and tryptophan for growing rats based on growth, food intake and plasma metabolites.

Weanling rats were divided into 24 groups and fed one of three levels of lysine and one of eight levels of tryptophan in a 3 X 8 factorial design to determine the optimum dietary proportions of lysine and tryptophan. The tryptophan "requirement" and the optimum lysine:tryptophan ratio were estimated for both adequate and subadequate lysine levels on the basis of weight gain, feed efficiency and changes in plasma levels of lysine, tryptophan and urea. The various criteria yielded similar estimates and indicated a tryptophan requirement of approximately 0.15% when lysine was adequate. The optimum lysine:tryptophan ratio was between 4 and 5 for the rapidly growing 3- to 6-week old rat.

Age Factors↗
PubMed1977

Determination of the optimum dietary proportions of lysine and tryptophan for growing pigs based on growth, food intake and plasma metabolites.

Weanling crossbred pigs were divided into 24 groups and fed one of three levels of lysine and one of eight levels of tryptophan in a 3 X 8 factorial design to determine the optimum dietary proportions of these two amino acids. Weight gain and feed efficiency, and changes in plasma levels of lysine, tryptophan and urea were the response criteria. The tryptophan "requirement" and the optimum lysine:tryptophan ratio were estimated for each of the three lysine levels. The data indicate a tryptophan requirement of 0.19% to 0.23% for the 3-week-old pig when the lysine level is adequate. For pigs of this age a lysine:tryptophan ratio of from 4 to 5 was about optimum.

Age Factors↗
PubMed1976

Survival of anaerobic and aerobic bacteria in a nonsupportive gassed transport system.

Survival of anaerobic and aerobic bacteria in a commercially available, non-supportive, gassed (oxygen-free) transport container (Anaport) was evaluated quantitatively. Saline-suspended obligate anaerobes survived significantly better in the gassed container in aerobic control tubes (P less than 0.025, t test), and counts were virtually unchanged after 8 h of holding. Similarly, initial counts and relative proportions of a mixture of Bacteroides fragilis and Staphylococcus aureus were maintained for 72 h. The value of the gassed transport system was less apparent when microorganisms were suspended in nutrient broth. The major advantage of the gassed transport system appears to be for holding of specimens collected by saline irrigation.

Bacteria↗