نتایج جستجو برای: غلظت lc50

تعداد نتایج: 44977  

2014
Amina Khatun Mahmudur Rahman Tania Haque Md Mahfizur Rahman Mahfuja Akter Subarna Akter Afrin Jhumur

Various forms of cancer are rising all over the world, requiring newer therapy. The quest of anticancer drugs both from natural and synthetic sources is the demand of time. In this study, fourteen extracts of different parts of eleven Bangladeshi medicinal plants which have been traditionally used for the treatment of different types of carcinoma, tumor, leprosy, and diseases associated with ca...

2015
Younoussa Lame Elias Nchiwan Nukenine Danga Yinyang Simon Pierre Ajaegbu Eze Elijah Charles Okechukwu Esimone

BACKGROUND Within the framework to control mosquitoes, ovicidal, larvicidal and pupicidal activity of Annona senegalensis leaf extract and its 4 fractions against Anopheles gambiae and Culex quinquefasciatus were evaluated in the laboratory conditions. METHODS Ovicidal test was performed by submitting at least 100 eggs of mosquitoes to 125, 250, 500, 1000 and 2000 ppm concentrations, while la...

2010
O. E. Maughan

Alam, M. K. and O. E. Maughan (1992). "THE EFFECT OF MALATHION, DIAZINON, AND VARIOUS CONCENTRATIONS OF ZINC, COPPER, NICKEL, LEAD, IRON, AND MERCURY ON FISH." Biological Trace Element Research 34(3): 225-236. Acute and chronic toxicity tests for malathion, diazinon, copper (Cu), mercury (Hg), lead (Pb), zinc (Zn), nickel (Ni), and iron (Fe) were conducted. Mortalities of Barilius vagra and Cyp...

Journal: :Acta poloniae pharmaceutica 2013
Natalia Gurtowska Tomasz Kloskowski Joanna Olkowska Anna Bajek Robert Debski Jowita Zielaskowska Tomasz Drewa

With the object of improving the effectiveness of a malignant melanoma's treatment and a patients' quality of life, there is a serious need to identify new anticancer compounds, for example, among naturally derived compounds such as sodium butyrate. The aim of this study was to assess the combined impact of carboplatin (C) and sodium butyrate on the B16 melanoma viability by in vitro. B16 cell ...

Journal: :Journal of environmental biology 2006
L O Chukwu C C Odunzeh

The relative acute toxicity of spent lubricant oil and detergent was evaluated against hermit crab, Clibanarius africanus (Aurivillus) and periwinkle, Tympanotonus fuscatus (L) from the Lagos lagoon in laboratory bioassays. Based on the derived toxicity indices, the detergent (96 hr LC50 = 5.77ml/l) was found to be 1.73 times more toxic than spent engine oil (96 hr LC50 = 10.01 ml/l) when actin...

Journal: :Revista da Sociedade Brasileira de Medicina Tropical 2013
Augusto Bücker Nádia Cristina Falcão Bücker Antonia Queiroz Lima de Souza Auricélia Matos da Gama Edson Rodrigues-Filho Fábio Medeiros da Costa Cecilia Veronica Nunez Ademir Castro E Silva Wanderli Pedro Tadei

INTRODUCTION In vitro bioassays were performed to access the larvicidal activity of crude extracts from the endophytic fungus Pestalotiopsis virgulata (Melanconiales, Amphisphaeriaceae) and the saprophytic fungus Pycnoporus sanguineus (Basidiomycetes, Polyporaceae) against the mosquitoes Aedes aegypti and Anopheles nuneztovari. METHODS The extracts were tested at concentrations of 100, 200, 3...

2011
H. Hammami R. Mezghani-Jarraya M. Damak A. Ayadi

Molluscicidal activity of Solanum nigrum var. villosum (morelle velue) extracts and their fractions were tested against the mollusca gastropoda Galba truncatula intermediate host of Fasciola hepatica. The results indicated that the hydro-methanol (MeOH-H2O) immature fruit extract possess the highest molluscicidal activity (LC50 = 3.96 mg/L) against Galba truncatula compared with other tested co...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2010
Ram P Yadav Ajay Singh

The compound crotocaudin extracted from the stem bark of the medicinal plant Croton tiglium Linn. was administered for 24 h or 96 h to the freshwater vector snail Lymnaea (Radix) acuminata Lamarck in order to test its toxicity. L. acuminata is the intermediate host of Fasciola hepatica and Fasciola gigantica which cause immense harm to man and his domestic animals. It was observed that the moll...

Journal: :Aquatic toxicology 2003
J T Rogers J G Richards C M Wood

The mechanism for acute toxicity of lead (Pb) in rainbow trout (Oncorhynchus mykiss) was investigated at Pb concentrations close to the 96 h LC50 of 1.0 mg dissolved Pb l(-1) (0.8-1.4, 95% C.I.) determined in dechlorinated Hamilton city tap water (from Lake Ontario, hardness=140 mg l(-1) CaCO(3)). Tissue Pb accumulation associated with death was highest in the gill, followed by kidney and liver...

Journal: :Journal of vector borne diseases 2014
Elijah Ajaegbu Eze Simon Pierre Yinyang Danga Festus Basden Chiedu Okoye

BACKGROUND & OBJECTIVES Aedes aegypti, Anopheles gambiae and Culex quinquefasciatus are vector mosquitoes of dengue, malaria, and filariasis, respectively. Since no vaccine is available to treat these diseases, the control of the main mosquito vectors is essential. As conventional insecticides have limited success, plants may be alternative larvicidal agents, since they contain a rich source of...

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