OBJECTIVE: The gastric protective abilities of dried sap and alkaloid fraction of Croton palanostigma and sucralfate against ethanol-induced necrosis was compared by means of standard experimental rat model. Subchronic toxicity was determined. MATERIAL AND METHODS: A pretreatment with either saline solution, dried sap of C. palanostigma 120 mg/kg, alkaloid fraction of C. palanostigma 20 mg/kg, 35 mg/kg y 50 mg/kg or sucralfate was given to 60 rats. Intragastric administration of 2 mL of 100% ethanol was accomplished one hour later. A gastrectomy was perfomed four hours later followed by macroscopic and histological evaluation of the gastric lesions. Subchronic toxicity was determined with doses of 0,12, 0,40 and 1,20 mL/kg of sap for a 30-day period with biochemical and histopathologic study of the organs. RESULTS: Pretreatment with dried sap and alkaloid fractions of C. palanostigma and...

OBJECTIVE: The gastric protective abilities of Croton palanostigma (dragonis blood), Aloe vera, sucralfate, and antacid against acute ethanol-induced necrosis by means of a standard experimental model in rats, were compared. MATERIAL AND METHODS: A pretreatment with either saline solution; 0,8 mL/kg or 0,4 mL/kg C. palanostigma; 7,5 mL/kg or 3,2 mL/kg A. vera; 500 mg/kg sucralfate; or antacid was given to 56 fasted rats. Then we accomplished an intragastric administration of 2 mL of 100% ethanol one hour later. A gastrectomy was performed four hours later followed by a macroscopic and histologycal evaluation of the gastric lesions. RESULTS: C. palanostigma pretreatment resulted in a significant reduction of ethanol-induced gastric mucosa Protective effect of Croton palanostigma, Aloe vera, SUCRALFATE AND ANTACID AGAINST ACUTE ETHANOL-INDUCED GASTRIC MUCOSA necrosis. A. vera failed to sho...

This study is an academic historical investigation that analyzes the work of the San Marcos University researcher Carlos Gutiérrez- Noriega in the debates about the health consequences of the coca consumption habit in the peruvian people. The context of the discussions during that period of time are reviewed, as well as, the systematic studies of the research developed by Gutiérrez- Noriega and his associates about the coca consumption in the andean people in Peru and the cocaine effects by experimental observations. The evidence about the coca harmful effects produced by the author is examined in the debates and political decisions about coca consumption in national and international policy.

The objective of this paper is to offer a historical perspective about the scientific investigations respect to the chewing of coca leaves and food ingestion of the Andean population during the second half of the twentieth century. The habit of cocaism was considered one of the most important problems of Public Health in Peru during the 40s, period when the academic debate of the association of deficient food and cocaism was discussed. Years later, epidemiological studies supported this paradigm; however, since the 70s, anthropological reports questioned that claim and defended the social use of coca chewing. During the 80s the pharmacological effects of coca and cocaine were demonstrated in reduction of food consumption in experimental animals, which supported the old Gutierrez-Noriega´s hypothesis.

Background: There are therapeutic alternatives in Peru with empirical native products such as potato juice. Objectives: To assess the antioxidant capacity and the gastric mucosa cytoprotection effect by Solanum tuberosum juice. Design: Experimental. Institution: Research Center of Biochemistry and Nutrition, Faculty of Medicine, Universidad Nacional Mayor de San Marcos. Biological materials: Solanum tuberosum, tomasa variety, and male albino rats. Methods: Oral solid fractions of supernatant and sediment from Solanum tuberosum juice were administered to fasting rats and an hour later, alcohol was given for gastric injury; gastric tissue was obtained by laparotomy. Oxidative stress was measured in the gastric mucosa by lipoperoxidation, formation of mucus by alcian blue, and the extent of protection by measuring lacerated areas in scanned image. Main outcome measures: Antioxidant capacity...