نتایج جستجو برای: polyp

تعداد نتایج: 8449  

Journal: :Journal of cell science 2015
Werner E G Müller Emad Tolba Qingling Feng Heinz C Schröder Julia S Markl Maria Kokkinopoulou Xiaohong Wang

Polyphosphate (polyP) is a physiologically occurring polyanion that is synthesized especially in bone-forming osteoblast cells and blood platelets. We used amorphous polyP nanoparticles, complexed with Ca(2+), that have a globular size of ∼100 nm. Because polyP comprises inorganic orthophosphate units that are linked together through high-energy phosphoanhydride bonds, we questioned whether the...

Journal: :International journal of clinical and experimental medicine 2015
Xiaohua Long Xiaofeng Li Lin Ma Jing Lu Suhuan Liao Ruohu Gui

PURPOSE To analyze the correlation of clinical symptom and endoscopic-pathological characteristics of colorectal polyps. METHODS A retrospective study was performed on 1,234 continuous colorectal polyp patients. Their clinical, colonoscopic and pathological data were collected and analyzed. RESULTS In 1,234 patients, 46.0% cases were asymptomatic, and 54.0% cases were symptomatic, and the f...

Journal: :The Biochemical journal 2007
Kyu Yeon Han Bok Sil Hong Yae Jin Yoon Chang Min Yoon Yoon-Keun Kim Young-Guen Kwon Yong Song Gho

PolyP (inorganic polyphosphate) is a linear polymer of many tens or hundreds of orthophosphate residues found in a wide range of organisms, including bacteria, fungi, insects, plants and vertebrates. Despite its wide distribution in mammalian tissues and plasma, the biological functions of polyP on tumour metastasis and angiogenesis have not been previously examined. In the present study, we ha...

2018
Stella Arelaki Athanasios Arampatzioglou Konstantinos Kambas Efthimios Sivridis Alexandra Giatromanolaki Konstantinos Ritis

Inflammation is a hallmark of colorectal cancer (CRC). Neutrophils are well-known mediators in tumor biology but their role in solid tumors, including CRC, was redefined by neutrophil extracellular traps (NETs). Given that it was recently demonstrated that platelet-derived polyP primes neutrophils to release NETs, we examined surgical specimens from CRC to investigate the presence of polyP, as ...

Journal: :Journal of bacteriology 1998
N N Rao S Liu A Kornberg

Escherichia coli transiently accumulates large amounts of inorganic polyphosphate (polyP), up to 20 mM in phosphate residues (Pi), in media deficient in both Pi and amino acids. This transient accumulation is preceded by the appearance of nucleotides ppGpp and pppGpp, generated in response to nutritional stresses. Mutants which lack PhoB, the response regulator of the phosphate regulon, do not ...

Journal: :Journal of general microbiology 1971
P F Mühlradt

Polyphosphate (polyp) kinase was prepared from EDTA-lysozyme spheroplasts of a Salmonella minnesota rough mutant. The enzyme, purified about 8o-fold, was free of ATPase and polyp-degrading activity and contained neither nucleic acids nor polyp which might act as primer. Using this enzyme, 32P-labelled polyp was prepared from [?P]ATP. The polyp was identified by the action of degrading enzymes, ...

Journal: :thrita 0
pooneh mokarram department of biochemistry, school of medicine, shiraz university of medical sciences, shiraz, ir iran; department of biochemistry, school of medicine, shiraz university of medical sciences, shiraz, ir iran. tel: +98-7112303029, fax: +98-7112303029 nazanin zare department of biochemistry, science and research branch, islamic azad university, shiraz, ir iran hamed jafari school of medicine, shiraz university of medical sciences, shiraz, ir iran soudabeh kavousi pour school of advanced medical science and technologies, shiraz university of medical sciences, shiraz, ir iran mahdi barazesh school of advanced medical science and technologies, shiraz university of medical sciences, shiraz, ir iran mahvash alizade naini department of internal medicine, school of medicine, shiraz university of medical sciences, shiraz, ir iran

results methylation in at least one gene was reported about 93.8%. the methylation of sfrp2 was reported in 39 out of the 48 subjects (81.2%) whereas methylation of mgmt was observed in 32 subjects (66.6%). conclusions the current study results showed that methylation of sfrp2 and mgmt play an important role in polyp formation. materials and methods forty eight tissue samples of polyp and adeno...

2005
U. Seitz S. Bohnacker S. Seewald J. Waye

This chapter describes various techniques that can be employed to assist in the removal of colon polyps that are considered to be large or ‘difficult.’ Size alone is only one of the features that may cause some hesitation in making the decision to attempt polyp removal. Other factors that are related to the perceived level of difficulty are polyps that are flat and only slightly elevated above ...

Journal: :Applied and environmental microbiology 1999
S K Maier S Scherer M J Loessner

We investigated the cellular mechanisms that led to growth inhibition, morphological changes, and lysis of Bacillus cereus WSBC 10030 when it was challenged with a long-chain polyphosphate (polyP). At a concentration of 0.1% or higher, polyP had a bacteriocidal effect on log-phase cells, in which it induced rapid lysis and reductions in viable cell counts of up to 3 log units. The cellular debr...

ژورنال: Medical Laboratory Journal 2018
Abdollahpour-Alitappeh , Meghdad, Asadzadeh Aghdaei , Hamid, Nazemalhosseini Mojarad , Ehsan, Pezeshkian, Zahra, Zali, Mohammad Reza ,

ABSTRACT           Colorectal cancer remains a leading cause of morbidity and mortality worldwide. Most colorectal cancers begin as a growth of tissue called a polyp, some types of which can change into cancer over the course of several years. Angiogenesis, the formation of new blood vessels, is known to play a key role in the initiation, growth and...

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