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Biomedical subjects

C E Cox

Publications and source records attributed to C E Cox.

At least 127 records · Page 7Linked to original sources
PubMed1979

The effect of platinum analogues and combination chemotherapy on murine bladder cancer.

Cis-diamminedichloroplatinum II currently is the most effective chemotherapeutic agent in advanced bladder cancer. However, most of the objective responses are partial and/or of limited duration (average 6 months). In an effort to identify a more effective compound with less toxicity platinum analogues have been synthesized. Since results in the carcinogen-induced murine bladder cancer model have correlated with activity of drugs in man this model was used to evaluate 4 of these analogues. Although not as effective as the parent compound, cis-diamminedichloroplatinum, they exhibited significant antitumor activity in the poorly differentiated transplanted tumor. However, they were not able to reduce the incidence or size of primary tumors. Another approach to enhance tumor cell kill is combination chemotherapy. The addition of cyclophosphamide or cyclophosphamide and doxorubicin hydrochloride to cis-diamminedichloroplatinum produced a greater tumor inhibition than cis-diamminedichloroplatinum alone in experiments with the transplanted and the primary tumor models. It is hoped that these studies will continue to provide background information for the design of disease oriented phase I and II clinical trials.

Animals↗
PubMed1977

Serum hepatic enzyme and bilirubin elevations during parenteral nutrition.

Serial liver enzyme and bilirubin concentrations were measured in 100 patients undergoing total parenteral nutrition. Between the eighth and tenth days, serum glutamic-pyruvic transaminase levels rose to 5.4 times pretotal parenteral nutrition levels; serum glutamic-oxalacetic transaminase, 2.8 times; bilirubin, 2.3 times, and lactic dehydrogenase, 1.5 times. These elevations were transient, lasting four to ten days. Biopsies of the liver taken during maximal elevations demonstrated marked periportal fatty change. A second elevation of serum glutamic-pyruvic transaminase, serum glutamic-oxalacetic transaminase, alkaline phosphatase and lactic dehydrogenase occurred in one-third to one-half of those patients receiving total parenteral nutrition for longer than a 20 day period. These elevations were more prolonged, and no biopsies were taken. Amino acid solutions contain conversion products of tryptophan, an amino acid that is unstable in the presence of the preservative sodium bisulfite which is added to all commercially available protein solutions. Infusion of these products into rats, either alone or as part of total parenteral nutrition solutions, resulted in periportal fatty change of the livers identical to that seen in our patients receiving total parenteral nutrition. A toxic effect of tryptophan conversion products in total parenteral nutrition solutions is proposed.

Alanine Transaminase↗
PubMed1976

Amikacin Therapy of Urinary tract infections.

The efficacy and safety of amikacin in treatment of patients with urinary tract infections were evaluated. Underlying urologic disease was prevalent in the population studied. Amikacin was administered to 50 patients in a dosage of 7.5 mg/kg twice daily. In a subsequent study, amikacin was compared with gentamicin in the treatment of 63 patients; amikacin was administered in a dose of 150 or 200 mg every hr, and gentamicin was administered in doses of 60-80 mg every 8 hr. In the initial study, amikacin produced a bacteriologic cure rate of 86%. In the comparative study, cure rates for gentamicin and amikacin were 85% and 81% respectively. No significant renal toxicity or audiometric changes were attributed to amikacin.

Adolescent↗
PubMed1975

A preliminary report on the supraoptic nucleus and control of intraocular pressure.

Four animals received unilateral optic nerve sections which ablated that eye's rise in intraocular pressure in response to water drinking. Bilateral supraoptic nucleus lesions in two animals resulted in ablation of the other eye's response to water drinking. Both animals showed histopathologic proof of the lesion site. Two animals received sham operations for the supraoptic nucleus lesions with no change in their differential response to water drinking. This report gives preliminary evidence of the hypothesis of a supraoptic nuclear control mechanism of intraocular pressure.

Animals↗