Introduction: There is limited research on neglected diseases. Medicinal plants are potential sources of antimicrobial compounds. Objectives: To determine the toxicity of Aloysia triphylla essential oil and citral activity against Trypanosoma cruzi in mice. Design: Experimental study in vivo, preclinical. Setting: Faculty of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru. Biological material: Albino mice. Main outcome measures: Signs of toxicity and mortality and parasitemia. Interventions: Acute oral toxicity at single dose was evaluated in albino rats. For trypanocidal activity mice were assigned to the following groups: untreated infected (G1), infected and treated with citral at doses 50, 150 and 300 mg/kg/day (G2, G3 and G4 respectively), infected and treated with benznidazole 100 mg/kg (G5), and uninfected and untreated (G6). Parasitemia was determined individually ...

Introduction: Candida albicans may cause severe invasive infections and frequently superficial lesions. Drugs used in treatment present drawbacks and search of alternatives becomes necessary. Objectives: To determine the activity of Thymus vulgaris essential oil (EO) alone and combined with EDTA on Candida albicans, and formulate a cream with EO supplemented with natural terpenes. Design:In vitro experimental and in vivo toxicity study. Setting: Faculty of Medicine and Faculty of Pharmacy, Universidad Nacional Mayor de San Marcos, Lima, Peru. Biological material:Candida albicans strain for in vitro study and rabbits for dermal toxicity tests. Methods:Antifungal activity was determined by agar well diffusion method, and minimum inhibitory concentration (MIC) by broth microdilution method. A cream was formulated with EO 1% and another supplemented with carvacrol, thymol, citral and EDTA. D...

En esta investigación, cuyo título es “Gestión de residuos sólidos hospitalarios en tiempos de covid-19 y su impacto en el derecho a la salud, Lima-2022”. En cuyo objetivo general fue analizar la gestión de residuos sólidos hospitalarios (RSH) en tiempos de Covid-19 y vulneración del derecho a la salud, Lima-2022. Cuya metodología fue el tipo básico, diseño de investigación de la teoría fundamentada, recabando información que responda a las categorías y subcategorías. Por tanto, el plan de investigación fue de enfoque cualitativo, recurriendo a las técnicas de entrevistas y análisis documental de datos, requiriéndose como instrumentos el uso de sus respectivas guías, para recolectar la opinión de diversos especialistas relacionados al tema de investigación. Dando como conclusión general que se evidenció que la gestión de RSH en tiempos de Covid-19 no fue adec...

El objetivo fue determinar la seguridad y eficacia antihipertensiva en animales y seres humanos del extracto etanólico de las hojas, jugo del fruto y fracción metanólica del jugo de Passiflora edulis. La seguridad en animales vía oral se hizo a dosis única en ratones albinos y a dosis repetidas durante 28 días en ratas Holtzmann; la actividad antihipertensiva se evaluó en ratas hipertensas por L-NAME; el posible mecanismo de acción antihipertensivo se determinó evaluando la diuresis en ratas, cuantificando los niveles de óxido nítrico en sangre de ratas, y actividad antioxidante in Vitro con DPPH; el estudio clínico fase II se realizó en pacientes voluntarios con diagnóstico definitivo de hipertensión arterial estadio 1 y bajo criterios éticos. Los resultados indicaron una dosis letal 50 (DL50) sobre 2000 mg/kg para el extracto de hojas y jugo del fruto de P. edulis por l...

Aims: Cancer is the first cause of death in the Peruvian population; searching alternative treatments of medicinal plants constitute a promissory field to find new anticancer drugs. The main objective in this study was to evaluate the phytochemical screening, total phenolic content, antioxidant and cytotoxic activity of ethanol extract of Chromolaena laevigata (C. laevigata) on human tumor cell lines. Study Design: The fresh leaves of C. laevigata were soaked with ethanol followed by phytochemical screening using standard methods. Place and Duration of Study: Laboratory of Applied Chemistry, Faculty of Pharmacy and Biochemistry, Universidad Nacional San Luis Gonzaga de Ica, Ica, Peru; Laboratory “Abraham Vaisberg Wolach”, Universidad Peruana Cayetano Heredia, Lima, Peru. Methodology: Phytochemical screening was assessed by using chemical reactives. Total phenolic content (TPC) was de...

Objective: To determine the ameliorative effect of the ethanolic extract of Chuquiraga spinosa (ChS) on 7,12-Dimethylbenz[a]anthracene (DMBA)-induced breast cancer in rats. Methods: 36 female Holztman rats were divided into 6 groups. I) The negative control group received physiological saline (PS). II) ChS-200 group received 200 mg/kg of ChS. III) DMBA group was induced with DMBA (20 mg/Kg) dissolved in PS and administrated orally for 15 weeks. IV) DMBA + ChS-50 group, V) DMBA + ChS-250 group, and VI) DMBA + ChS-500 group, which received the extract orally for 15 weeks after DMBA induction. All data were expressed as mean and standard deviation. One-way analysis of variance (ANOVA) followed by Dunnet test was carried out to compare the mean value of different groups Histopathological analysis was evaluated by using Image J software. Results: Hematology showed that the triglyceride level ...

Objective: To determine the ameliorative effect of the ethanolic extract of Chuquiraga spinosa (ChS) on 7,12-Dimethylbenz[a]anthracene (DMBA)-induced breast cancer in rats. Methods: 36 female Holztman rats were divided into 6 groups. I) The negative control group received physiological saline (PS). II) ChS-200 group received 200 mg/kg of ChS. III) DMBA group was induced with DMBA (20 mg/Kg) dissolved in PS and administrated orally for 15 weeks. IV) DMBA + ChS-50 group, V) DMBA + ChS-250 group, and VI) DMBA + ChS-500 group, which received the extract orally for 15 weeks after DMBA induction. All data were expressed as mean and standard deviation. One-way analysis of variance (ANOVA) followed by Dunnet test was carried out to compare the mean value of different groups Histopathological analysis was evaluated by using Image J software. Results: Hematology showed that the triglyceride level ...

Cesar Franco-Quino is a doctoral student studying an Epidemiological Research Doctorate at Universidad Peruana Cayetano Heredia under FONDECYT/CIENCIACTIVA scholarship EF033-235-2015 and supported by training grant D43 TW007393 awarded by Fogarti International Center of the US National Institutes of Health.

Carvacrol is a phenol monoterpene found in aromatic plants specially in Lamiaceae family, which has been evaluated in an experimental model of breast cancer. However, any proposed mechanism based on its antitumor effect has not been reported. In our previous study, carvacrol showed a protective effect on 7,12-dimethylbenz[α]anthracene- (DMBA-) induced breast cancer in female rats. The main objective in this research was to evaluate by using in silico study the carvacrol on HER2, PI3Kα, mTOR, hERα, PR, and EGFR receptors involved in breast cancer progression by docking analysis, molecular dynamic, and drug-likeness evaluation. A multilevel computational study to evaluate the antitumor potential of carvacrol focusing on the main targets involved in the breast cancer was carried out. The in silico study starts with protein-ligand docking of carvacrol followed by ligand pathway calculatio...