Introduction: Bidens pilosa species belonging to the Asteraceae family, known in Peru as love dry bur, is credited with anti-inflammatory, diuretic, hepatoprotective effects. Objectives: To determine the protective effect of phenolic compounds and flavonoids extracted from Bidens pilosa L whole plant on breast cancer induced in rats by 7,12-dimethylbenz (A) anthracene (DMBA). Design: Experimental. Setting: Laboratory of Pharmacology, Faculty of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru. Biological material: Bidens pilosa L whole plant collected in Santiago de Cao, Ascope, La Libertad, and female rats. Interventions: Phenolic compounds and flavonoids were obtained by rapid column chromatography with solvents of increasing polarity; by thin layer chromatography on a preparative scale four phenolic compounds were isolated and elucidated by UV-Visible spectroscopy with s...

Objectives: To determine whether oral administration of Mimosa pudica (mimosa) leaves ethanol extract modifies fertility in normal rats. Design: Experimental study. Setting: Instituto de Investigaciones Clinicas, Facultad de Medicina, Facultad de Farmacia, Universidad Nacional Mayor de San Marcos, Hospital Nacional Hipolito Unanue, Lima, Peru. Biological material: Albino rats and Mimosa pudica leaves. Methods: Forty-eight animals were divided randomly into groups of six animals each. The first was control and received saline solution 5 mL/kg and the others 50, 250 and 500 mg/kg oral extracts for 28 days. Each group considered 6 males and 6 females together. The animals were killed to observe the presence of fetuses in uterus. FSH, estradiol and progesterone levels were determined in μg /dL in female rats’ blood samples and hormone dosage was done by electrochemoluminiscence method. In...

Objectives: To determine the protective effect of Piper aduncum (matico) leaves ethanol extract and its phytomedicine in capsules in liver cirrhosis induced in rats. Design: Experimental. Location: Faculty of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru. Biological material: Leaves of Piper aduncum, and Rattus norvegicus, Holtzman strain. Interventions: The leaves were collected in La Merced district, Pasco department. The phytomedicine capsules were prepared from the plant ethanol extract. Cirrhosis was induced with phenobarbital 0.5 mg/mL diluted in drinking water during 15 days, then carbon tetrachloride 0.2mL/kg 1:1 in olive oil orally during 7 days. Blood samples were drawn in order to determine liver profile and malondialdehyde; the animals were sacrificed, extracting the liver for pathology study. Data were evaluated by multivariate techniques with p <0.05. Ma...

Objective: To determine efficacy and security of of Annona muricata L (guanábana) leaves ethanolic extract plus glibenclamide capsules in controlling glucose levels in type 2 diabetes mellitus patients compared to patients receiving with glibenclamide alone. Design: Randomized, double-blind, parallel-group controlled clinical trial. Setting: Internal Medicine service, Tingo María-EsSalud Hospital I, Huanuco city. Par ticipants: Type 2 diabetes mellitus patients. Interventions: Between May 2007 and September 2007 sixty 38 to 60 year-old patients were randomly assigned to 6 groups, 3 receiving capsules containing 180 mg of Annona muricata L leaves ethanolic extract plus glibenclamide 5 mg and 3 receiving glibenclamide 5 mg tablets only. Main outcome measurements: Reduction of glycemia. Results: There was reduction of glycemic levels, higher in those receiving guanabana plus glibenclamida...

Objetives: To determine the gastroprotector effect of Copaifera officinalis oil using indomethacin and pyloric ligature in rats. Design: Preclinical study. Setting: Faculties of Medicine, Pharmacy and Biochemistry, National University of San Marcos, Lima, Peru. Biological material: Rats and copaiba oil. Interventions: Copaiba oil was collected in Ucayali, Pucallpa. Cytoprotection was tested with indomethacin considering a normal control group, and indomethacin, copaiba and omeprazole groups. Using visual analogue scale mucosa gastric injuries were referred as those compatible with local necrosis (unviable tissue), hyperemia, flushing, and hemorrhage, and ulcers according to the modified Macallister’s scale. The anti-secretion trial used the pyloric ligature model. Twenty-four albino rats were randomized in three groups: control, copaiba oil 40 mg/kg and omeprazole 10 mg/kg, respectivel...

Introduction: Piper aduncum also known as matico is credited with antihypertensive, anti-inflammatory, healing effects. Objectives: To determine the antihypertensive activity of Piper aduncum ‘matico’ extract on L-NAME-induced hypertension in mice. Design: Experimental. Setting: Faculty of Medicine, and Faculty of Pharmacy and Biochemistry, National University of San Marcos, Lima, Peru. Biological material: Piper aduncum ethanolic extract leaves and mice. Interventions: Six groups of six Muss musculus mice each were used, one without hypertension (negative control) and four with L-NAME-induced hypertension: one positive control and three groups for 50, 150 and 300 mg/kg doses, respectively. Treatment was given orally once daily for 25 days. Measurements of systolic blood pressure (SBP), diastolic blood pressure (DBP) and mean arterial pressure (MAP) were performed twice weekly (Tuesd...

Objectives: To determine the influence of Bidens pilosa L. whole plant ethanolic extract on colon cancer induced in rats. Design: Experimental study. Setting: Faculties of Medicine, Pharmacy and Biochemistry and Biologic Sciences, Universidad Nacional Mayor de San Marcos, Lima, Peru. Biologic material: Holzmann rats. Interventions: Fortyeight 2 months 100 g to 130 g Holtzmann rats were separated in six groups of eight each and 1,2-dimethylhidrazine induction of colon cancer was performed. Groups were normal control, group with pathology and groups with pathology and treatments. Main outcome measures: Nitric oxide levels, oxidative stress markers and colon cellular pattern modifications. Results: There was increment of nitric oxide levels and lipoperoxidation in the 1,2-dimethylhidrazine (DMH) animals, and decrease in those receiving both the toxic and the plant extract. Histopathology re...

Objective: To determine whether oral administration of the ethanolic flower extract from Laccopetalum giganteum (pacra-pacra) increases fertility in normal rats. Design: Experimental study. Setting: Faculty of Medicine and Faculty of Pharmacy and Biochemistry, Universidad Nacional Mayor de San Marcos. Biologic material: Rats. Interventions: Forty-eight rats were randomly distributed into 2 groups of 24 rats each. The first control group received solución salina fisiológica (SSF) 5 mL/kg and the second group 300 mg/kg of the extract, orally, for 15 days. Each group had 6 female rats and 6 male rats living together and 6 female rats and 6 male rats lived separate. The animals living together were sacrificed in order to observe the fetuses in the uterus. The animals that lived separate had blood samples taken in order to determine testosterone levels in male rats and LH, FSH, estrogen and...

Objective: To determine the influence of both the ethanolic extract and the methanolic fraction containing phenolic and flavonoids compounds of Bidens pilosa L whole plant on gastric cancer induced in rats with N-nitroso-N-methylurea (NMU). Design: Experimental. Setting: Instituto de Investigaciones ClínicasBioterio, Facultad de Medicina UNMSM. Biologic material: Holtzmann male albino rats. Interventions: Following Ferraz de Souza et al., 2002, we had a normal control group, a group with NMU and NMU groups plus treatments with ethanolic extract and methanolic fraction at 300 mg/kg doses. For statistical significance we considered p<0,05. Main outcome measures: Progresion of gastric neoplasia induced in rats. Results: Indicate dysplasia and initial stages of carcinoma in the rats stomachs, which was less evident in the animals with treatment, being better the group that received the m...

Introduction: Piper aduncum (matìco) is a medicinal plant used for gastrointestinal and genitourinary disorders. Objectives: To determine the in vitro antitumoral effect of Piper aduncum (matico) essential oil on seven human tumoral cell lines and its oral toxicity in mice. Design: Experimental. Setting: Faculty of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru. Biologic material: Human tumoral cell lines HT-29, H-460, MCF-7, M-14, ME-180, DU-145, K-562; and 3T3 fibroblasts and male 40 days post weaning Balb C/53 mice. Interventions: The cell lines HT-29, H-460, MCF-7, M-14, ME-180, DU-145, K-562, and 3T3 were exposed to four different concentrations of Piper aduncum essential oil, and to different 5-fluorouracil concentrations used as a positive control. Cell lines growth inhibition (IC50) was determined using linear regression analysis and DL50 by the number of deaths ...

Estudio clínico, aleatorio, grupo paralelo, doble ciego, realizado en el Servicio de Medicina Interna del Hospital I Tingo María, de EsSalud, en el Departamento de Huánuco, para determinar la eficacia y seguridad de cápsulas de extracto etanólico de hojas de Annona muricata L (guanábana) más glibenclamida, para un mejor control de los niveles de glicemia comparado con la administración de glibenclamida sola, en pacientes con diabetes mellitus tipo 2. Entre mayo y setiembre de 2007, 60 pacientes fueron asignados a 6 grupos de manera aleatoria; 3 grupos recibieron cápsulas conteniendo 180 mg de extracto etanólico de hojas de Annona muricata L. más 5 mg de glibenclamida, los otros 3 grupos continuaron solo con glibenclamida, y se evaluaron los niveles de glicemia. Se encontró disminución del nivel de glicemia, siendo mayor el efecto en aquellos que recibieron guanábana más gl...

La presente investigación tuvo como propósito proponer un modelo sistemático del patrimonio regional para fortalecer la identidad cultural en estudiantes de educación secundaria de una institución educativa de Chiclayo. Se trabajó bajo el enfoque holístico, socioformativo y el modelo pedagógico aula invertida. El informe responde a una investigación básica – cuantitativa, de nivel descriptivo – propositivo. Contó con una muestra conformada por 509 estudiantes, empleando un muestreo probabilístico aleatorio simple. La técnica del recojo de información fue la encuesta con un instrumento que consistió en una escala para medir actitudes sobre la identidad cultural, teniendo como resultado que el nivel de identidad cultural en los estudiantes del nivel secundario de una institución educativa de Chiclayo llegó al 57.4 % al nivel medio, el 25.1 % bajo y sólo un 17.5 % alto...

Considering that cultural identity is the basis for knowing the origins of the community and facing the future withcharacter and conviction, na article has been developed with the aim of conducting a systematic review of the scientific literature on strengthening the cultural identity of Regular Basic Education students. The research is a descriptive review article. The search was carried out in different databases such as Dialnet, Scielo, Redalyc, Latindex, Doaj, Redib, Miar, Open Access Academy, Crossref and Creative Commons. To achieve the study objective, 20 qualitative, quantitative and mixed Spanish research papers were selected after a process of elimination and filtering, the information was processed and systematized using the descriptive analytical method. The results reflect that the strengthening of cultural identity is a fundamental element in the development of the country ...

Dentro del grado de mi estima y preocupación en la decisión de definir el tema de mi investigación, fundamentalmente se plasma al moderno mundo donde los países realizan trabajos a través de organizaciones, de tal modo contribuyen a la consecución de varios objetivos en muchos casos con fines de lucro y en otros casos con fines sociales, generalmente mi tema esta comprendida como organizaciones no lucrativas o mejor dicho a organismos de la administración pública. Como soporte de principio vamos a partir de la definición de la contabilidad gerencial que tiene como objeto final, la preparación de información para el uso específico de la gerencia, así mismo prepara, analiza los ingresos de costos y de activos por segmentos de la empresa; para que la gerencia los use en sus actividades de planeamiento, coordinación, control y toma de decisiones, recopilados por la determinaciÃ...

La investigación que lleva por nombre Plataformas digitales y atención del administrado en un organismo regional de Piura, 2025, busca evidenciar la conexión que existe entre las variables plataformas digitales y la atención del administrado en un organismo regional de Piura, 2025, siendo su tipo de investigación de aplicación de enfoque cuantitativo con un diseño de investigación no experimental de corte transversal y nivel descriptivo correlacional, a través de la escala de Likert usando como técnica para recoger información y datos la encuesta y aplicando como instrumento la cuestionario; el cual consta de 20 preguntas que desarrollan las dimensiones planteadas, a una población censal de 52 administrados que han sido ingresados y procesados en el programa estadístico informático SPSS v27 utilizando la prueba de hipótesis Chi cuadrado de Pearson, en este proceso de la ob...

Objectives: To determine anti-inflammatory and antioxidant activities of Jungia rugosa Less leaves flavones’ fraction. Design: Experimental. Setting: Faculties of Medicine and Pharmacy and Biochemistry, National University of San Marcos, Lima, Peru. Biological material: Flavones fraction extracted from Jungia rugosa Less leaves and rats. Interventions: Jungia rugosa Less leaves collected in Condorcunca’s hill at 3 500 m.a.s.l., Quinua district, Ayacucho department. The anti-inflammatory activity was assessed in vivo in carrageenan-induced paw edema model and 1, 6 interleukins serum levels and C reactive protein (CRP) were measured in blood; granuloma was induced according to Sedwicks and studied by histopathology. The antioxidant effect was investigated in vitro by 1,1- diphenyl-2-picrylhydrazyl (DPPH) radical neutralization. Main outcome measures: Anti-inflammatory and antioxidant e...

The purpose of the present investigation has been to observe the effect of the lipidic fractions of Leoidium meyenii Walpers, «maca» on the reproductive organs of female mice, following the method adapted by S. Garg et al (1998) The yellow maca from central andean rcgion (Puna, Junín) was used. Initially we obtained the hexanic and ethanolic éxtracts by means of saponification of the first one, fatty acids and total sterols were separated. Lipidic fractions, which were oraily administered to four groups of female mice in dosis of 200 and 100 mg/kg respectively for a period of 16 days, maintaining the control group. For the histological observation the animals were sacrificed and their avaries were fixed previous to its inclusion in paraffin.The results demostrated a significant stimulative effect on the folliclegenesis with the total sterols fraction on the ovaries of the evaluated a...

Introduction: Baccharis genistelloides leaves ethanol extract may reduce gastric cancer development and is an oxidative stress marker. Objectives: To determine the chemoprotector efficacy of Baccharis genistelloides (EEBG) leaves ethanol extract in 1,2-dimethylhydrazine (DMH)-induced colon cancer in male rats. Design: Experimental. Setting: Pharmacology Laboratory, Faculty of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru. Biological material: Carqueja collected in Huancayo, Junin, and 145 + 15 g male rats. Interventions: Intestinal tumors were induced by weekly subcutaneous injection of DMH for 22 weeks at 20 mg/kg. Six groups were formed: Group 1 saline, Group 2 100 mg /kg EEBG; Group 3 DMH; Group 4 DMH plus 100 mg/kg EEBG; Group 5 DMH plus 250 mg/kg EEBG; Group 6 DMH plus 500 mg/kg EEBG. Finally, blood samples were drawn to determine malondialdehyde and nitric oxide le...

Objectives: To determine the effect of Jatropha macrantha Müll. Arg 'huanarpo macho' methanol extract in rats with induced erectiledysfunction. Design: Experimental. Setting: Pharmacology Laboratory, Faculty of Medicine, Universidad Nacional Mayor de San Marcos,Lima, Peru; Pharmacy Laboratory, Universidad Nacional de San Cristobal de Huamanga, Ayacucho, Peru. Biological material:Plant collected from Ayacucho, wistar male rats 300+/-50 g. Interventions: Plant collection was done in Vilcas Huaman Province - Ayacucho.Sexual behavior, nitric oxide concentration and vasorelaxant effect were determined in isolated rats penis corpus cavernosumdistributed in the following groups: group 1 water 10 mL/kg, group 2 sildenafil 5 mg/kg, groups 3, 4 and 5 respectively methanol extract100, 200 and 300 mg/kg. Organs were isolated in groups receiving 50, 100 and 300 ug/mL of extract, L-arginine 300 uM, 3...

The purpose of the present investigation has been to observe the effect of the lipidic fractions of Leoidium meyenii Walpers, «maca» on the reproductive organs of female mice, following the method adapted by S. Garg et al (1998) The yellow maca from central andean rcgion (Puna, Junín) was used. Initially we obtained the hexanic and ethanolic éxtracts by means of saponification of the first one, fatty acids and total sterols were separated. Lipidic fractions, which were oraily administered to four groups of female mice in dosis of 200 and 100 mg/kg respectively for a period of 16 days, maintaining the control group. For the histological observation the animals were sacrificed and their avaries were fixed previous to its inclusion in paraffin.The results demostrated a significant stimulative effect on the folliclegenesis with the total sterols fraction on the ovaries of the evaluated a...