Of the species Werneria apiculata and Werneria marcida S. F. Blake of the Asteracae family it can be extracted and identified: reducing sugars (glucose, levulose) guns, tannins, steroids, fenolic compunds, flanvonoids, alcaloids. lt has been found in W. Marcida low concentration of the same principies.The biological assays of the Artemia Salina Leach, both species present biodinamic activity. W apiculata presents greater bronco-dilatador activity and antiinflamatory than W Marcida.The terapeutic activity of these species is due the presence of flavonoids, that were obteined as the mayor constituyents that we think participate in a pronounded way in the total activity of the drug.

Of the species Werneria apiculata and Werneria marcida S. F. Blake of the Asteracae family it can be extracted and identified: reducing sugars (glucose, levulose) guns, tannins, steroids, fenolic compunds, flanvonoids, alcaloids. lt has been found in W. Marcida low concentration of the same principies.The biological assays of the Artemia Salina Leach, both species present biodinamic activity. W apiculata presents greater bronco-dilatador activity and antiinflamatory than W Marcida.The terapeutic activity of these species is due the presence of flavonoids, that were obteined as the mayor constituyents that we think participate in a pronounded way in the total activity of the drug.

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...

To study extracts of the cotton biocides it has collected more than thirty species of plants, which were classified taxonomically in the Natural History Museum of the Universidad Nacional Mayor de San Marcos, between species that are considered relevant for its insecticidal properties we have the following species: Tephrosia cinerea (sacha barbasco), Artemisia absinthium (wormwood), Ryania speciosa (riania), Cissampelos grandifolia (legia), Datura stramonium (chamico), Hura crepitans (catahua), Schinus molle (molle), Annona cherimola (chirimoya), Annona muricata (guanabana or graviola), Tagetes patula (Marigold), Tanacetum parthenium (santa maria), Chromolaena laevigata (sacha huaca), Clibadium asperum (huaca), Lonchocarpus nicou (Mount mullein), Lonchocarpus spiciflorus (yumanasa), Centropogon cornutus (arco sacha), Erythrina berteroana (small amasisa), Erythrina edulis (pajuro), Erythr...

To study extracts of the cotton biocides it has collected more than thirty species of plants, which were classified taxonomically in the Natural History Museum of the Universidad Nacional Mayor de San Marcos, between species that are considered relevant for its insecticidal properties we have the following species: Tephrosia cinerea (sacha barbasco), Artemisia absinthium (wormwood), Ryania speciosa (riania), Cissampelos grandifolia (legia), Datura stramonium (chamico), Hura crepitans (catahua), Schinus molle (molle), Annona cherimola (chirimoya), Annona muricata (guanabana or graviola), Tagetes patula (Marigold), Tanacetum parthenium (santa maria), Chromolaena laevigata (sacha huaca), Clibadium asperum (huaca), Lonchocarpus nicou (Mount mullein), Lonchocarpus spiciflorus (yumanasa), Centropogon cornutus (arco sacha), Erythrina berteroana (small amasisa), Erythrina edulis (pajuro), Erythr...

Con el fin de sustituir los insecticidas químicos usados en el cultivo del algodonero por sustancias inócuas que permitan un manejo integrado de plagas con fundamento ecológico, se investigaron y colectaron 40 especies vegetales con propiedades biocidas, las que fueron clasificadas taxonómicamente en el Museo de Historia Natural de la Universidad Nacional Mayor de San Marcos. Entre las especies más relevantes por sus propiedades insecticidas tenemos: Tephrosia cinerea (sacha barbasco), Artemisia absinthium (ajenjo), Ryania speciosa (riania), Cissampelos grandifolia (legía), Datura Stramonium (chamico), Hura crepitans (catahua), Schinus molle (molle), Annona cherimola (chirimoya), Annona muricata (guanábana o graviola), Tagetes patula (marigold), Tanacetum parthenium (santa maría), Chromolaena laevigata (sacha huaca), Clibadium asperum (huaca), Lonchocarpus nicou (barbasco del mon...