The calpain system in human placenta.

The calpain system is involved in a number of human pathologies ranging from the muscular dystrophies to Alzheimer's disease. It is important, therefore, to be able to obtain and to characterize both mu-calpain and m-calpain from human tissue. Although human mu-calpain can be conveniently obtained from either erythrocytes or platelets, no readily available source of human m-calpain has been described.

Kupffer cells from halothane-exposed guinea pigs carry trifluoroacetylated protein adducts.

The anesthetic, halothane, is bioactivated by the liver cytochrome P450 system to trifluoroacetyl-chloride, which can readily acylate liver protein. Covalent binding of the trifluoroacetyl moiety may result in hapten formation leading to the induction of an immune response and ultimately halothane hepatitis. In this study the presence of trifluoroacetylated-protein adducts in Kupffer cells was investigated to learn how the immune system might come in contact with the proteins.

Demonstration of a cellular immune response in halothane-exposed guinea pigs.

Halothane hepatitis is considered to be a result of an idiosyncratic autoimmune reaction brought about by the formation of neoantigens that have been generated by covalent binding of halothane biotransformation intermediates. The guinea pig is being examined as an animal model to investigate an immune-mediated mechanism for halothane hepatotoxicity. Male Hartley guinea pigs were exposed to 1% halothane/40% oxygen for 4 hr, three times with 40-day intervals.

Randomized comparison of two combination regimens versus minimal chemotherapy in nonsmall-cell lung cancer: a Southeastern Cancer Study Group Trial.

Patients with advanced nonsmall-cell lung cancer (NSCLC), good performance status, and no prior chemotherapy were randomized to receive one of three regimens: intravenous vindesine (V) 3 mg/m2 every 2 weeks; V 3 mg/m2 weekly for 5 weeks, followed by a dose every 2 weeks plus mitomycin (VM) 20 mg/m2 day 1 and then 15 mg/m2 every 6 weeks; or V at the more intensive dose rate plus cisplatin (VC) 120 mg/m2 with forced diuresis on days 1 and 29 and then every 6 weeks. A total of 435 patients were enrolled in the trial, with 410 (94%) assessable for prognostic characteristics and survival. Among the 375 patients assessable for response, only 58 (15%) achieved objective response.

Etoposide combined with cyclophosphamide plus vincristine compared with doxorubicin plus cyclophosphamide plus vincristine and with high-dose cyclophosphamide plus vincristine in the treatment of small-cell carcinoma of the lung: a randomized trial of the Bristol Lung Cancer Study Group.

A total of 353 patients with previously untreated small-cell lung cancer (SCLC) were accrued in this multicenter trial. Patients were randomly assigned to receive one of the following three regimens: cyclophosphamide 1,000 mg/m2 intravenously (IV) day 1, vincristine 1.4 mg/m2 IV day 1, and etoposide 50 mg/m2 IV day 1, followed by etoposide 100 mg/m2/day orally days 2 through 5 (CEV); cyclophosphamide 1,000 mg/m2 IV day 1, vincristine 1.