نتایج جستجو برای: inva

تعداد نتایج: 323  

Journal: :The Journal of biological chemistry 2011
Yihui Luo Yan Liu Dexter Sun David M Ojcius Jinfang Zhao Xuai Lin Dong Wu Rongguang Zhang Ming Chen Lanjuan Li Jie Yan

Leptospirosis caused by pathogenic species of the genus Leptospira is a re-emerging zoonotic disease, which affects a wide variety of host species and is transmitted by contaminated water. The genomes of several pathogenic Leptospira species contain a gene named invA, which contains a Nudix domain. However, the function of this gene has never been characterized. Here, we demonstrated that the i...

Journal: :The American journal of tropical medicine and hygiene 2003
Jariyanart Gaywee John B Sacci Suzana Radulovic Magda S Beier Abdu F Azad

To understand further the molecular basis of rickettsial host cell invasion, Rickettsia prowazekii invasion gene homolog (invA) has been characterized. Our previous experiments have shown that InvA is an Ap5A pyrophosphatase, a member of the Nudix hydrolase family, which is up-regulated during the internalization, early growth phase, and exit steps during rickettsial mammalian cell infection. I...

Journal: :Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc 2006
Randall S Singer Cara L Cooke Carol W Maddox Richard E Isaacson Richard L Wallace

Many epidemiological studies of Salmonella rely on conventional bacteriological culture methods to detect Salmonella in fecal samples. These culture-based methods are inefficient for epidemiological studies in populations with a low prevalence of Salmonella. The objective of this study was to optimize a protocol that uses pooled Salmonella enrichment broth cultures of bovine feces and polymeras...

2017
Susmita Pal Samir Dey Kunal Batabyal Abhiroop Banerjee Siddhartha Narayan Joardar Indranil Samanta Devi Prasad Isore

AIM The aim was to characterize Salmonella enterica serovar Gallinarum isolated from backyard poultry by polymerase chain reaction (PCR) detection of virulence genes invasion (invA) and Salmonella plasmid virulence C (spvC). MATERIALS AND METHODS Two strains of Salmonella serovar Gallinarum isolates used in this study were obtained from an outbreak of fowl typhoid in backyard Vanaraja fowl. P...

2014
Camilo Rocha José Meseguer

The InvA tool supports the deductive verification of safety properties of infinite-state concurrent systems. Given a concurrent system specified as a rewrite theory and a safety formula to be verified, InvA reduces such a formula to inductive properties of the underlying equational theory by means of the application of a few inference rules. Through the combination of various techniques such as...

Journal: :Infection and immunity 2002
Jariyanart Gaywee Suzana Radulovic James A Higgins Abdu F Azad

An invasion gene homolog, invA, of Rickettsia prowazekii has recently been identified to encode a member of the Nudix hydrolase subfamily which acts specifically on dinucleoside oligophosphates (Np(n)N; n >/= 5), a group of cellular signaling molecules known as alarmones. InvA is thought to enhance intracellular survival by regulating stress-induced toxic nucleotide levels during rickettsial in...

Journal: :Journal of clinical microbiology 2006
Daniele M Nucera Carol W Maddox Patricia Hoien-Dalen Ronald M Weigel

API 20E and invA PCR were evaluated for the identification of Salmonella enterica isolates from swine farms. API 20E had the highest agreement with other tests at the 99.9% likelihood level. Both tests had 100% sensitivity and 96% specificity compared to 16S rRNA sequencing. Compared to serotyping, both tests had 96% sensitivity; specificity was 86% for API 20E and 79% for invA PCR.

2017
Jiubiao Guo Edward W. C. Chan Sheng Chen Zhenling Zeng

A novel, rapid and simple fluorescence resonance energy transfer (FRET) based Salmonella specific gene, invA, detection system was developed, in which quantum dots (QDs) and graphene oxide (GO) worked as fluorescent donor and quencher, respectively. By measuring the fluorescence intensity signal, the Salmonella specific invA gene could be sensitively and specifically detected with a limit of de...

Journal: :Cell 2003
Ichiro Nishii Satoshi Ogihara David L. Kirk

In Volvox carteri adults, reproductive cells called gonidia are enclosed within a spherical monolayer of biflagellate somatic cells. Embryos must "invert" (turn inside out) to achieve this configuration, however, because at the end of cleavage the gonidia are on the outside and the flagellar ends of all somatic cells point inward. Generation of a bend region adequate to turn the embryo inside o...

2014
Mohamed Karmi

Detection of pathogenic Salmonella isolated from meat and poultry products by detecting virulence invA gene using PCR technique.A total of100 meat and poultry products samples were collected from shops and supermarkets; including 50 meat products samples and 50 poultry products. Salmonella was detected by conventional isolation methods and then PCR was carried out to detectinvA gene in isolated...

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