food poisoning is caused by bacteria only

Ngày tải lên: 04/10/2012, 10:24

... identifying patients at risk for complicated diverticular disease. Dis Colon Rectum. 1991;34:339-42. 4. Kourtesis GJ, Williams RA, Wilson SE. Surgical options in acute diverticulitis: value of sigmoid ... Schumpelick V. Increased distribution of collagen type III and reduced expression of matrix metalloproteinase 1 in patients with diverticular disease. Int J Colorectal Dis. 2001;16:271-5. 3. ... (arrow). Discussion The prevalence of diverticulum in patients aged 65 years or more is as high as 65%, but merely 5% in those below 40 years of age [6]. Sigmoid colon diverticulum is closely...

Ngày tải lên: 25/10/2012, 10:51

... connectivity company is introducing "Patch by Exception", the next generation in cable management systems. Patch by Exception guarantees network managers a system that is not only flexible, ... even easier. HOW TO GET THE MOST OUT OF PATCH BY EXCEPTION Many organisations have successfully implemented the Patch by Exception solution by establishing a maintenance contract with an installer ... changes without the need for assistance from an installer. To date this has been achieved by assigning a hub port and an extension port to each individual within an organisation. If an individual...

Ngày tải lên: 26/10/2013, 19:15

Ngày tải lên: 14/12/2013, 00:41

... the tissues producing it. In response to tissue injury, such as hepatic and renal injury, the inactive single-chain HGF is converted to a two-chain form exclusively in the injured tissue. This ... exclusively in the injured tissue. This conversion is mediated by ser- ine protease activity, which is induced in the injured tissue [28]. The two-chain form is required for the bio- logical activity ... TMPRSS13. Proteolytic activation of pro-HGF by TMPRSS13 Pro-HGF is proteolytically activated by matriptase and hepsin, and the protease activity is inhibited by HAI-1 [9,10,18]. Therefore, we examined...

Ngày tải lên: 15/02/2014, 01:20

... investigations that include analysis of pancreatic islet cells. The H-PGDS TG mouse is a novel obesity model with which to investigate the mechanism of adipogene- sis. As is the case for obese people ... et al. (2001) The mechanisms by which both heterozygous peroxisome proliferator-activated receptor gamma (PPARgamma) deficiency and PPARgamma agonist improve insulin resistance. J Biol Chem 276, 41245–41254. 38 ... molecular mecha- nisms underlying adipogenesis may lead to the devel- opment of strategies for reducing the prevalence of obesity. Adipogenesis is a complex process accompanied by various changes...

Ngày tải lên: 16/02/2014, 09:20

... followed by Strep-tag II was isolated by BamHI digestion and inserted into the BamHI site of pmGFP–calpain 7. To construct pCMV3xFLAG–IST1 and pGEX–IST1, an IST1 cDNA fragment was amplified by PCR, ... autolysis. Therefore, it is premature to draw conclusions regarding the mechanism of the enhancing effects of IST1 on mGFP–calpain 7–Strep autolysis in vitro. Both mGFP–calpain 7 and IST1 have ... FLAG–IST1 did not enhance the autolysis of mGFP–calpain 7 in cultured cells. On the other hand, overexpression of FLAG– IST1 DMIM1,2 suppressed the autolysis. This observation might be explained by...

Ngày tải lên: 18/02/2014, 04:20

... K m values is exclu- sively displayed by the tetramer forms, and low- efficiency kinetics with high K m values is displayed by the dimer forms. These observations strengthen the previous hypothesis that ... K m is the Michaelis constant and K 0.5 is the substrate concentration where v = 0.5 V max . When n = 1, there is no co-operativity, and K 0.5 = K m . Acknowledgements This work was supported by ... behaviour after dilution to 6 lgÆmL )1 indicate that dissociation of the tetramer to the dimer is a slowly progressing process. This is supported by the kinetic behaviour of the recombinant enzyme...

Ngày tải lên: 18/02/2014, 12:20

... was detected using MUPP1 antibodies. Immunohistochemistry Mice were raised and maintained according to governmen- tal and institutional care instructions. Immunohistochemis- try was carried out on 14 lm ... different odorant molecules is governed by the diverse array of olfactory receptors expressed by olfactory sensory neurons in the nasal epithelium. Olfactory receptors consist of seven transmembrane ... between MUPP1 and OR2AG1 is inhibited by over-expressing the interacting PDZ domains, the resulting response of OR2AG1 to odorant is modified in that the rapid decay of signal is impaired. We finally...

Ngày tải lên: 18/02/2014, 13:20

... cancer. The activity of cyclin dependent kinase 4 is controlled by multiple mechanisms, including phosphorylation of tyrosine 17. This site is equivalent to tyrosine 15 of cyclin dependent kinase ... in HeLa lysates. C-YES is a 62 kDa nonreceptor tyrosine kinase of the Src family that is expressed in a wide range of tissues [24]. The N-terminus of C-YES is dually myristoylated and palmitoylated ... thyroid epithelial cells: activation by TSH, inhi- bition by TGFbeta, and phosphorylations of its subunits demonstrated by two-dimensional gel electro- phoresis. Exp Cell Res 291, 135–149. 35 Sexl...

Ngày tải lên: 18/02/2014, 18:20

... aureus is a major food- borne pathogen which produces a number of toxins and virulence fac- tors [1]. The staphylococcal enterotoxins produced by S. aureus are known to cause staphylococcal food poisoning, ... cytokine synthesis and febrile response induced by SEC1 is dependent on NADPH oxidase and not on PI3K ⁄ Akt or 5-LOX ⁄ FLAP because these phenomena are attenuated by apocynin and not by ETYA, MK ... and IL-6 that is blocked by the NF-jB inhibitor (PDTC or SN-50). Moreover, the NF-jB binding ability is abro- gated by binding site competition and antibody super- shift analysis. These findings...

Ngày tải lên: 19/02/2014, 00:20

... precipitated DNA was analyzed by 1% agarose gel electro- phoresis. DNA was visualized by staining with ethidium bromide. Results are represented by negative images. Asterisks indicate nucleic acids ... and were isolated as a single peak fraction by a 0.1–1.0 m NaCl linear gradient in R buffer. Histone H1, which exists in the DNA affinity fraction, was separated as a major component stepwise elution ... nuclear foci linked to phosphorylated histone H2AX (c-H2AX) [3], which is responsible for the redistribution of repair factors to DSB sites [4], although it is dispensable for initial damage recognition...

Ngày tải lên: 19/02/2014, 06:20

... multigene family is modulated by distal cis elements. J Biol Chem 271, 28146–28153. 24 Sharma S & Gopinathan KP (1996) Role of TATATAA element in the regulation of tRNA Gly 1 gene expression in Bombyx ... examined by including heparin (20 lgÆmL )1 ) in the binding reaction (lanes 5, 6, both panels). The complex formation was analysed by electrophoresis on 4% polyacylamide (nondenaturing) gels and visualized ... as marked. The heparin-resistant complex on tRNA Gly 1 -1 (left) is marked by an arrow; ++ denotes 6 lg of protein. (B) The specificity of complex formation was examined by the competition with...

Ngày tải lên: 20/02/2014, 02:21

... this gene is controlled by Ets-1 and requires the presence both of the Sp1 and Sp3 transcription factors. The presence of this complex multicomponent PRD in the fgl2 proximal promoter is consistent ... pre- sented in this study suggest that this PRD is necessary for the inducible expression of fgl2, we plan to undertake additional studies aimed at more precisely elucidating specific mechanisms regulating ... [2,3], glomerulonephritis [4,5], septic shock [6,7], and bacterial and viral infections [8]. For example, tissue factor (TF) [9], the transmembrane receptor of factor VII, is the major procoagulant...

Ngày tải lên: 20/02/2014, 11:20

... SODs is not governed by one or even two residues, but is most likely accomplished by the concerted effects of a combination of key residues. Further analysis of these and other mutant SODs is currently ... electrophoresis (PAGE) Native 8% polyacrylamide gels (acrylamide : N,N¢-methyl- enebisacrylamide, 29 : 1, w/w) containing NaCl/Tris, pH 8.8 utilized a Tris/glycine electrophoresis buffer system consisting ... N-terminal amino acid residues. SOD is released from GST-SOD fusion proteins by cleavage with FXa (Fig. 2C). Although this method is less efficient than cleavage by thrombin [24] the released SOD...

Ngày tải lên: 21/02/2014, 01:21

... semiquantitatively by t his method. The effects of enzymes, inhibitors and other reagents on the cell cycle– dependent interaction could also be examined very easily by means of t his method. This method is ... meiotic division until they meet sperm. In that phase, the nuclear envelope is dispersed in the cytop lasm as nuclear envelope precursor vesicles. Cell cycle progression is triggered by fertilization, ... shown by sperm chromatin in vitro ([6,13]; this study), and by mitotic phase chromo- somes f rom C HO cells [5]. Regulation of the binding of LBR to chromatin by phosphorylation was shown in this study...

Ngày tải lên: 22/02/2014, 04:20

Ngày tải lên: 22/02/2014, 07:20

Ngày tải lên: 22/02/2014, 07:20

Ngày tải lên: 06/03/2014, 20:20

Ngày tải lên: 06/03/2014, 22:21