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Biomedical subjects

N G Popovich

Publications and source records attributed to N G Popovich.

At least 19 recordsLinked to original sources
PubMed1996

Rx-to-OTC switches: from prescription to self-care.

One often hears, "The only thing certain is change." Change, whatever its nature, is fraught with uncertainty. Product switches from prescription to nonprescription status are no exception. These transitions pose immediate challenges to consumers and to the health care professional, who may be poorly prepared to confront them. However, the benefits are tangible and profound. On the whole, the benefits far outweigh the drawbacks; FDA should be recognized for facilitating this process.

Humans↗
PubMed1996

Nonpharmacologic treatment of obesity.

Experts agree that overweight and obesity pose a significant public health problem in the United States. Obesity is considered to be a complex, multifactorial disease involving genetics, physiology, psychology, and environment, and is influenced by cultural messages. Comorbidities linked to obesity include coronary heart disease, stroke, hypertension, diabetes mellitus, gout, dyslipidemias, cholecystitis, and gallstones. Pharmacists can help patients with dietary goals by understanding sound principles of weight management.

Body Mass Index↗
PubMed1982

Spirulina.

Explore the source record for details and available documents.

Appetite Depressants↗
PubMed1981

A study of intravenous emulsion compatibility: effects of dextrose, amino acids, and selected electrolytes.

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↗