نتایج جستجو برای: 50 lethality

تعداد نتایج: 466750  

Journal: :Planta medica 2008
Tai-Hung Chen Bing-Chung Liau Sheng-Yang Wang Ting-Ting Jong

In this study, we assessed the antitumor activity of the methanol extract from wood chips of the heartwood of the Taiwan red cypress, Chamaecyparis formosensis Matsumura, which is a precious tree species endemic to Taiwan. A brine shrimp lethality test (BST) indicated that the ethyl acetate (EtOAc)-soluble extract from the MeOH extract was a suitable candidate (LC (50) = 15.36 microg/mL) for fu...

2014
Meerae Lim Sang Uk Lee Jong-Ik Park

BACKGROUND In light of the increased suicide rate in Korea, it has become important for researchers to examine the various factors associated with it. The purpose of this study is to compare and analyze the difference between suicide attempters and completers in terms of the suicide methods used and the lethality of these methods. In addition, we investigated certain demographic factors that ar...

2015
Ying Shen Jie Li Masayuki Nitta Diahnn Futalan Tyler Steed Jeffrey M. Treiber Zack Taich Deanna Stevens Jill Wykosky Hong-Zhuan Chen Bob S. Carter Oren J. Becher Richard Kennedy Fumiko Esashi Jann N. Sarkaria Frank B. Furnari Webster K. Cavenee Arshad Desai Clark C. Chen

We identified a synthetic lethality between PLK1 silencing and the expression of an oncogenic Epidermal Growth Factor Receptor, EGFRvIII. PLK1 promoted homologous recombination (HR), mitigating EGFRvIII induced oncogenic stress resulting from DNA damage accumulation. Accordingly, PLK1 inhibition enhanced the cytotoxic effects of the DNA damaging agent, temozolomide (TMZ). This effect was signif...

Journal: :European journal of cancer 2010
Elisa Ferrari Chiara Lucca Marco Foiani

In recent years, cancer drug discovery has faced the challenging task of integrating the huge amount of information coming from the genomic studies with the need of developing highly selective target-based strategies within the context of tumour cells that experience massive genome instability. The combination between genetic and genomic technologies has been extremely useful and has contribute...

Journal: :Nature Reviews Drug Discovery 2018

A Ameri F Sharififar GHR Dehghan MH Moshafi

In the present work, the bioassay screening of the essential oil and various extracts of two plants including fruits of Heracleum persicum Desf. and rhizomes of Zingiber officinale Rosc. have been studied with brine shrimp test. There is only one report about cytotoxicity of H. sphondylium in literature and so H. persicum has been used as second selection. At first essentials oil and various ex...

A Ameri F Sharififar GHR Dehghan MH Moshafi

In the present work, the bioassay screening of the essential oil and various extracts of two plants including fruits of Heracleum persicum Desf. and rhizomes of Zingiber officinale Rosc. have been studied with brine shrimp test. There is only one report about cytotoxicity of H. sphondylium in literature and so H. persicum has been used as second selection. At first essentials oil and various ex...

Journal: :Cancer discovery 2015
Panagiotis A Konstantinopoulos Raphael Ceccaldi Geoffrey I Shapiro Alan D D'Andrea

UNLABELLED Approximately 50% of epithelial ovarian cancers (EOC) exhibit defective DNA repair via homologous recombination (HR) due to genetic and epigenetic alterations of HR pathway genes. Defective HR is an important therapeutic target in EOC as exemplified by the efficacy of platinum analogues in this disease, as well as the advent of PARP inhibitors, which exhibit synthetic lethality when ...

Journal: :Drug research 2015
O A Adeoluwa A O Aderibigbe A G Bakre

Olax subscorpioidea is a shrub or tree found in Nigeria, and other parts of Africa. It is indicated in the management of inflammatory disorder, mental illness, convulsion, pain, and cancer.Based on the folkloric use in the management of mental illness, antidepressant activity of Olax subscorpioidea (6.25-50 mg/kg, i. p.) was investigated using forced swimming, tail suspension, yohimbine induced...

Journal: :Journal of ethnopharmacology 2004
G N Wanyoike S C Chhabra C C Lang'at-Thoruwa S A Omar

The organic extracts of leaves and roots of five plants used for treating malaria in Central, Nairobi and Rift Valley Provinces, Kenya were tested for brine shrimp lethality and in vitro antiplasmodial activity against chloroquine sensitive and resistant strains of Plasmodium falciparum. Of the plants tested, 60% were toxic to the brine shrimp (LC(50)<30 microg/ml) and eight out of ten plant pa...

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