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101.
Mary R. Cook Mary M. Gerkovich Kathleen A. O'Connell Miriam Potocky 《Research in nursing & health》1995,18(3):217-224
The purpose of this study was to investigate the contribution of reversal theory constructs (i.e., metamotivational states) to understanding the outcome of tempting situations thatoccur in the first 6 weeks of smoking cessation. Cessation program participants (N = 68) were interviewed about tempting situations in which they either smoked or maintained abstinence. Both independent groups and repeated measures analyses indicated that metamotivational state (serious and goal-directed vs. playful and spontaneous) and cigarette availability significantly predicted outcome. Reversal theory constructs correctly predicted outcome of the tempting episode for 70% of the subjects, while cigarette availability was an accurate predictor for 74%. Metamotivational state and cigarette availability together predicted the outcome for 89% of the subjects. ©1995 John Wiley & Sons, Inc. 相似文献
102.
103.
Kathleen M. Giacomini 《Journal of pharmacokinetics and pharmacodynamics》1997,25(6):731-741
Many clinically used drugs and their metabolites as well as a variety of environmental toxins are organic cations at physiologic pH. Secretion in the renal proximal tubule constitutes a major pathway in the elimination of organic cations. In this report, the results of studies recently performed in this laboratory are presented. First, the molecular cloning of a novel splice variant of organic cation transporter from rat kidney (rOCTIA) is described. The functional characteristics of the transporter are discussed along with the implications of RNA splicing in enhancing transporter diversity. Second, the molecular cloning of the first human organic cation transporter (hOCTI) is described. Distinct interspecies differences in the tissue distribution and function of this transporter is presented. These studies have paved the way for elucidating molecular structure function relationships of organic cation transporters and for determining their physiologic role in drug absorption and elimination. The cloned transporters can be used in mammalian expression systems for screening candidate compounds identified during drug discovery and development and in the in vivo prediction of the pharmacokinetics of therapeutic agents. 相似文献
104.
Carol A. Sawka Kathleen I. Pritchard Wendy Shelley Gerrit DeBoer Alexander H.G. Paterson J. William Meakin Donald J.A. Sutherland 《Breast cancer research and treatment》1997,43(3):211-215
Background: The outcome of breast cancer is usuallydetermined by multiple factors. Serum tumor necrosis factoralpha concentration has been found to be increasedin the circulation of patients with malignancy. Thisstudy was designed with the aim to investigateany correlation between the serum tumor necrosis factoralpha and the clinicopathological fetures and furthermore evaluatethe prognostic significance of serum tumor necrosis factoralpha concentration in breast cancer. Methods: Forty consecutivepatients with invasive breast cancer undergoing modified radicalmastectomy were prospectively included and evaluated. Venous bloodsamples were collected before the surgery. Sera wereobtained by centrifugation, and stored at – 70°C until assayed. The control group consisted 30healthy, age-matched subjects. Serum concentrations of tumor necrosisfactor alpha were measured by the quantitative sandwichenzyme immunoassay technique. The data on tumor size,age, estrogen receptor status, lymph node status andTNM staging were reviewed and recorded.Results: The mean value of serum tumor necrosis factor alphain patients with invasive breast cancer was 1.47± 0.58 pg/ml and that of the controlgroup was 0.98 ± 0.37 pg/ml, and thedifference was significant (P < 0.01). With univariableanalysis, patients with maximum tumor size of 5cm or larger (P=0.03), more advancedTNM staging (P < 0.01); and more advancedlymph node status (P < 0.01) were shownto have significantly higher serum concentrations of tumornecrosis factor alpha. However, with multivariable analysis, TNMstaging appeared as the only independent factor (P< 0.01) predicting the significant, higher serum concentrationsof tumor necrosis factor alpha. Conclusion: Preoperative evaluationof serum tumor necrosis factor alpha concentrations maybe a valuable parameter for reflecting the severityof staging for invasive breast cancer. 相似文献
105.
Angus M. McLean Elizabeth Babcock-Atkinson Kathleen Rein Donald A. Ruggirello Mario A. Gonzalez Patrick K. Noonan 《Pharmaceutical research》1987,4(4):327-331
Gallopamil is a calcium-channel antagonist with reported activity in experimental animals three to five times higher than that of verapamil. An automated high-performance liquid chromatographic (HPLC) method with fluorescence detection is described for the simultaneous determination of gallopamil and its metabolite norgallopamil in plasma. Gallopamil was well resolved from norgallopamil and other metabolites, allowing simultaneous quantitation of both drugs. The detection limit for both gallopamil and norgallopamil was 0.9 ng/ml. This method has been successfully used for the determination of gallopamil and norgallopamil following the administration of 25-, 37.5-, and 50-mg oral doses of drug. 相似文献
106.
Multiple sources of resistance are present in the healthcare environment to comprehensive assessment and intervention efforts
in regard to sexuality. The authors survey both the diversity of needs and values presented by consumers, and encourage providers
to equip themselves educationally, emotionally and ethically so that they can deliver relevant, holistic services to consumers. 相似文献
107.
Ajit K. Shah Richard C. Brundage Kathleen D. Lake Ronald J. Sawchuk 《Biopharmaceutics & drug disposition》1995,16(1):59-70
We estimated the free fraction (fu) of cyclosporine (CyA) in the plasma from concentrations of CyA in urine (Cu) and plasma (Cp), urine flow rate (UF), and glomerular filtration rate in rabbits and in heart transplant patients. Following intravenous administration of CyA (5–30 mg kg?1) in ten NZW rabbits and oral administration of CyA (4.8–12.1 mg kg?1) in nine heart transplant patients, CyA concentrations in urine and plasma were measured by HPLC. The ratios of Cu to Cp and UF data were fitted to a physiological model of renal clearance using NONMEM. The free fraction of cyclosporine in the rabbits and the heart transplant patients was 0.0122 and 0.14, respectively. Because of the relatively low permeability of CyA across the tubular epithelium, no apparent equilibrium between Cu and Cp at any urine flow rate was reached and, therefore, the Cu to Cp ratio will not be equal to fu. 相似文献
108.
PURPOSE: The purpose of this article is to describe measured visual field extent in very young children in response to variation in peripheral stimulus flicker rate. METHODS: Binocular visual field extent was measured using a black, double-arc perimeter and an LED static perimetry procedure in 120 11-month-old, 120 17-month-old, and 120 30-month-old children and 40 adults. Each subject was tested with one of four flicker rates: 1 Hz, 10 Hz, 20 Hz, or 40 Hz. An interpolated estimate of the eccentricity at which 50% of subjects detected the peripheral stimulus and the mean of the farthest eccentricity at which subjects detected the peripheral stimulus were calculated for each flicker rate for each age group. RESULTS: In 11-, 17-, and 30-month-old children, but not in adults, measured visual field extent (eccentricity at which the stimulus was detected) varied significantly with rate of stimulus flicker. The largest measured visual field extent was produced by a 10-Hz stimulus and the smallest was produced by 1-Hz and 40-Hz stimuli. Measured visual field extent in children was similar to that of adults for 10-Hz flicker, but smaller than that of adults for 1-Hz, 20-Hz, and 40-Hz flicker. CONCLUSIONS: These results underscore the importance of standardizing stimulus parameters when developing tests for clinical assessment of visual fields in children. Furthermore, for longitudinal assessment of young patients, use of a 10-Hz flicker rate, in combination with the other parameters used in the present study, would help to avoid difficulties in interpretation that could arise from an interaction between age-related and disease-related changes that might occur if other stimulus flicker rates were used. 相似文献
109.
110.
Kathleen Wermke Christine Hauser Gerda Komposch Angelika Stellzig 《The Cleft palate-craniofacial journal》2002,39(3):285-294
OBJECTIVE: The objectives of the present study were: (1) to analyze the cry features of infants with cleft lip and palate (UCLP) by means of spectral analysis, (2) to describe changes of the acoustic parameters from birth until 9 months of age, and (3) to compare these data with existing cry data of infants without cleft (control group). DESIGN: The study was designed on a interdisciplinary, prospective, and longitudinal basis. SETTING: Interdisciplinary study: (1) Institute of Anthropology at the Humboldt-University, Berlin; (2) Heidelberg University Hospital: Interdisciplinary Cleft Palate and Craniofacial Center. PATIENTS AND METHOD: The cry parameters of five patients with complete unilateral cleft lip, alveolar ridge, and hard and soft palate were analyzed from birth to 9 months of age. The patients were treated with the same protocol. At the age of 24 months, sensomotor development was assessed using the KIPHARD test. Perceptual judgment of speech, performed after 36 months of life, included nasal resonance, nasal emission of air, articulation disorders, and speech intelligibility. MAIN OUTCOME MEASURE: The cry parameters of fundamental frequency (F(0)), pitch period perturbation quotient (PPQ), and cry duration (Tsam) were analyzed. RESULTS: Contrary to the expectation that laryngeal parameters are not affected by vocal tract malformations, differences of cry parameters were found between the patients with UCLP and the non-cleft group. Particularly, the F(0) and its short-time variability (PPQ) were affected. CONCLUSIONS: The preliminary results of this study showed that F(0) and PPQ of spontaneous cries are influenced in patients with UCLP, and a cry analysis might become a noninvasive tool for early detection of an at-risk status for neuromuscular development and prediction of an at-risk status for later speech and language acquisition in infants with cleft lip and palate. Future research strategies are outlined. 相似文献