Analysis of normal oral flora in 150 cheek pouches of hamsters (Mesocricetus auratus) defined the microbial working environment and demonstrated the absence of human oral black-pigmented bacteria. Silk sutures saturated with Porphyromonas gingivalis, Prevotella intermedia or subgingival plaque were used to close wounds made in hamster's cheek pouches. Abscesses were formed when sutures had solitary P.
View Article and Find Full Text PDFObjective: To ascertain the incidence, severity, risk factors, and outcomes of injuries in children and adolescents playing Australian Rules football.
Setting And Subjects: A prospective cohort study of football injuries in children and adolescents playing community football. We studied a stratified random sample of 54 teams and clinics (18 under-15 teams, 18 under-10 teams and 18 Vickick clinics for children under 10 years) from the Melbourne metropolitan area.
ADP-ribosylation of protein in heart membrane preparations has been shown to be present in adult tissue but absent from early neonate tissue [Piron and McMahon (1990) Biochem. J. 270, 591-597].
View Article and Find Full Text PDFIn one practice with 14,000 patients an advice line was set aside at designated times to enable patients to speak directly to a doctor on the telephone. The aim of this study was to determine who used the line, why they called, the conditions callers presented with, the action taken by the doctor and whether patients and doctors thought the service was a good idea. A total of 277 calls were made during the five month study period.
View Article and Find Full Text PDFThis study identifies and correlates proportions of bacteria in periapically involved anterior teeth of 85 adult Egyptian patients. Affected sites were free from caries and periodontal disease but had a history of trauma. The mean number of component bacterial species per specimen was 3.
View Article and Find Full Text PDFOral Microbiol Immunol
April 1992
Treponema denticola and Porphyromonas gingivalis have been associated with human adult severe periodontitis. In this study, we quantified these putative pathogens in subgingival plaque samples collected from 74 Fijians, 74 Colombians and 73 U.S.
View Article and Find Full Text PDFCell Biol Toxicol
April 1991
Studies were conducted to determine if in vivo exposure to dinitrotoluenes (DNT), which is associated with circulatory disorders of atherosclerotic etiology in humans, is associated with alterations of vascular smooth muscle cells (SMC) consistent with the atherogenic process. Sprague-Dawley rats (150-180 g) were injected IP for 5 days/week for 8 weeks with 2,4- or 2,6-DNT (0.5, 5, or 10 mg/kg) or medium chain triglyceride (MCT) oil.
View Article and Find Full Text PDFThe subcellular distributions of endogenous ADP-ribosylation products in hearts from 1-day-old neonatal and adult rats were investigated. In adult rat heart a 52 kDa mono-ADP-ribosylation product was identified in the plasma membrane fraction. In contrast, in neonatal rat heart a 130 kDa poly-ADP-ribosylation product was present in the nuclear fraction.
View Article and Find Full Text PDFBaboons may be useful as animal models for the study of human oral diseases and infections. They are closely related to man anatomically, physiologically, and phylogenetically. Plaque and gingival indices were relatively low in 18 baboons (Papio anubis).
View Article and Find Full Text PDFThe comparative absorption of cocoa butter (25.5% C16:0, 34.4% C18:0, 34.
View Article and Find Full Text PDFJ Pharmacol Exp Ther
October 1989
The pertussis toxin-sensitive G proteins (guanine nucleotide binding proteins)-muscarinic receptor interactions in 18-day fetal to adult rat hearts were studied. The collective concentration of these G proteins was measured by pertussis toxin-dependent ADP-ribosylation and decreased from 1.5 pmol of [32P]ADP-ribose/mg of protein in the fetal heart to 0.
View Article and Find Full Text PDFA case of pericentric inversion chromosome 9 with an associated personality disorder is reported. There is justification for a more widespread cytogenetic screening of psychiatric disorders of this type.
View Article and Find Full Text PDFJ Long Term Care Adm
December 1988
Nurs Clin North Am
December 1988
Historically, registered professional nurses have responded to the health care needs of the community in a variety of roles. Practitioner, educator, administrator, consultant, or researcher--health promotion and prevention have served as an integral part of nursing practice. With the emergence this decade of HIV infection, nurses are responding with much needed education, skill, expertise, and care.
View Article and Find Full Text PDFJ Pharmacol Exp Ther
October 1988
The muscarinic receptor in the rat large airway was characterized by radioligand binding experiments. Using I-quinuclidinyl (phenyl-4-[3H])benzilate ([3H]QNB) as the radioligand, the receptor appears to be homogenous. The receptor density was 23 fmol/mg of protein and the Kd value for [3H]QNB binding was 16 pM.
View Article and Find Full Text PDFThe results of selective magnetic resonance imaging of the knee were compared with those of arthroscopy in a prospective series of fifty patients. A specifically designed protocol for imaging, producing T1 sagittal images interleaved at four millimeters while the patient's foot was in 20 degrees of external rotation, was utilized. This technique, called selective magnetic resonance imaging, yielded excellent visualization of the posterior cruciate ligament, medial meniscus, and lateral meniscus in all patients.
View Article and Find Full Text PDFLate Imp China
February 1991
The noise exposures of 274 printing production workers in 34 establishments in the New York city area were monitored. Results showed that 43% were exposed to 8-hr time-weighted average (TWA) noise exposures of 85 dBA or greater and that 14% were exposed to 8-hr TWAs of 90 dBA or greater. Within the press department, web press workers were exposed to significantly greater mean 8-hr TWAs than sheetfed press workers.
View Article and Find Full Text PDFWe have determined whether the process of agonist-mediated phosphorylation of the muscarinic receptor correlates with the process of muscarinic receptor desensitization in chick cardiac tissue. Exposure of ventricular slices to the agonist carbachol under conditions previously shown to lead to large increases in muscarinic receptor phosphorylation (Kwatra, M. M.
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