Microscopic and electronic counting procedures as well as visual observations for creaming and flocculation were employed to quantitatively and qualitatively measure the effects of dextrose, amino acids and various mono- and di-valent cations on the globule size distribution of the soybean oil emulsion 10%, Intralipid. A linear regression analysis was demonstrated to successfully profile much of the stability data. Results indicated that divalent cations caused flocculation in the emulsion's internal phase immediately upon or shortly after the addition of their salts. The rate and extent of flocculation intensified with increasing ionic concentration. Amino acids, apparently acting at the oil/water interface, delayed divalent cation-induced flocculation; however, they did not prevent emulsion stability loss. The addition of dextrose 5% or 12.5% brought about a reduction of emulsion pH and significant globule coalescence 72 hours after admixture. Monovalent cations (i.e., Na+, K+) induced a progressive loss of emulsion stability over the 72-hour course of the experiments, the effect of function of ionic concentration. From the data, a model has been generated to predict significant changes (p less than 0.05) in Intralipid's globule size distribution upon addition of solute and exposure to room temperature. Further recommendations of solute admixture with the intravenous emulsion are also included.

Amino Acids↗

PubMed1981

Cephalosporin-aminoglycoside synergistic nephrotoxicity: fact or fiction?

A review of synergistic nephrotoxicity associated with the concomitant administration of aminoglycoside and cephalosporin antibiotics is presented. A combination of these antibiotics is frequently administered in clinical practice as initial therapy in the treatment of gram-negative bacillary infection. The nephrotoxicity associated with cephalosporin/aminoglycoside administration in humans has been characterized as an acute tubular necrosis. Attempts to investigate this type of toxicity in animals using the rat as the model have revealed that the rat kidney is not affected by the aminoglycoside/cephalosporin combination in the same manner as the human kidney. The results from studies using the rat were not predictive of the nephrotoxicity encountered in humans, and cephalosporins actually appear to protect the rat from aminoglycoside-induced renal damage. The mechanism of the protective effect in rats and the toxic effects in man remain unknown. A species differentiation clearly exists between man and rats with respect to the nephrotoxic effects of aminoglycoside/cephalosporin combinations. The weight of present evidence indicates that, in man, an aminoglycoside/cephalosporin combination is synergistically nephrotoxic.

Aminoglycosides↗

PubMed1981

Topical clindamycin formulations for the treatment of acne vulgaris. An evaluation.

This study evaluated the effectiveness of topically applied clindamycin hydrochloride and clindamycin phosphate in two, nonprescription, antiacne hydroalcoholic products for the treatment of acne vulgaris. Two percent concentrations of these clindamycin compounds were compared with the hydroalcoholic products in patients with moderate to severe acne who were attending a private dermatology office practice during a three-month period. Statistical analysis revealed a significantly greater clinical effectiveness for the clindamycin formulations compared with the hydroalcoholic products after eight weeks. The effectiveness of clindamycin compared with the hydroalcoholic products was not significantly greater after four and 12 weeks. The following are the possible reasons for this nonsignificant difference: a placebo effect within the first month, relative ineffectiveness of one type of clindamycin formulation tested, and the impressive clinical effectiveness of the antiacne hydroalcoholic products when combined with a consistent cleansing program.

Acne Vulgaris↗

PubMed1980

Stability of intravenous fat emulsions.

Explore the source record for details and available documents.

Amino Acids↗

PubMed1978

Statistical interpretation of bioavailability data.

Explore the source record for details and available documents.

Biological Availability↗

PubMed1977

Drug interactions in the GI tract.

Explore the source record for details and available documents.

Digestive System↗

PubMed1977

Statistical inference as applied to bioavailability data--a guide for the practicing pharmacist.

Descriptive statistics and statistical tests used in reporting bioavailability data are reviewed in order to give the practicing pharmacist the fundamental knowledge needed to evaluate such data. Using acetaminophen bioavailability data as a model the following concepts are explained: mean, median, mode, standard deviation, range, 95% confidence limit, Student's t-test, analysis of variance, and the Wilcoxon rank sum test.

Acetaminophen↗

PubMedDate not supplied

Developing and implementing a pharmaceutical care model in an ambulatory care setting for patients with diabetes.

This study evaluated pharmaceutical care as an adjunct to an existing, coordinated-care program at a Regional Diabetes Center. The progress of a control group receiving the standard pharmacist instruction was compared with two treatment groups receiving additional small group or individual supplementary education for a 2-month period. Outcome evaluation included assessment of individual diabetes management through blood glucose monitoring and responses on a pretest and posttest questionnaire. Patients in the treatment groups demonstrated significantly lower average weekly blood glucose levels and a decreased incidence of hyperglycemic episodes compared with the control group. Questionnaire data for both treatment groups demonstrated a significant increase in patient understanding of diabetes medications and medications for associated illnesses, an increase in knowledge about blood glucose monitoring, and a positive difference in perceptions/attitudes toward diabetes and communication with the pharmacist. This approach is consistent with the concept of pharmaceutical care in which the pharmacist helps patients avoid long-term complications and thus improve their quality of life.

Adult↗