... the case geroup The control ones were mainly selected from the close relatives of the patients Both groups were investigated for any drug intake, hypertension and any other systemic disease Then ... Though the mean of serum Na+ of the patients were in the Na+ normal range but it was in the upper limit of this range (135-150 mEq/Lit) and in comparison with control group, the serum Na+ of the ... for the control group Then a fasting-state blood sample was obtained from both case & control group and sent to the laboratory Serum Na+, K+ levels were measured with flam photometry method by the...
Ngày tải lên: 03/11/2012, 09:49
... the site for K+ and vice versa, in the absence of Mg2+, K+ can bind to the Mg2+ binding site [22] This is of importance to the kinetics of the enzyme, as the occupancy of the two sites by either ... at the indicated dimethylsulfoxide (DMSO) concentrations The ratios were calculated from the data in Table The inset illustrates the ratios of the apparent inhibition constants to K0.5 app at the ... 11.2 mM (,) The subsaturating regions of the curves were used to generate the Lineweaver–Burk plots (A–C) The Kapp values derived from these figures were plotted vs the concentrations of the inhibitor...
Ngày tải lên: 08/03/2014, 02:20
Báo cáo khoa học: The Janus-faced atracotoxins are specific blockers of invertebrate KCa channels ppt
... not bind as deeply into the extracellular mouth of the ion channel pore as these other toxins This is probably due to the bifurcated d-guanidinium group at the tip of the critical Arg8 residue, ... found in the corresponding position in vertebrate Slo channels; these mutations include T290E in dSlo [43] and Q285K in pSlo [14] (Fig 7) Thus, the amino acid variation in the pore region of the BKCa ... for the fast-transient and late-sustained IK(Ca), respectively (Fig 3D) In order to further examine the hypothesis that the target of J-ACTXHv1c is an insect KCa channel, we investigated whether...
Ngày tải lên: 16/03/2014, 06:20
Báo cáo khoa hoc:"Mapping the Naked Neck (NA) and Polydactyly (PO) mutants of the chicken with microsatellite molecular markers" docx
... between the NA locus and ADL0237 in the distal region of chromosome 3q These results contribute to connecting the former classical map to the molecular genetic map of the chicken, and open the way ... assigned to the linkage group IV of the “classical” map [20] The naked neck mutation is characterised by a reduction of feathered areas, mainly of the neck, but also in other regions such as the ventral ... sequencer The results from the pooled samples and the sire were analysed with Genotyper software (ABI) Markers that were homozygous in the sire or which showed the same alleles in the sire and the...
Ngày tải lên: 09/08/2014, 18:21
ROLE OF VOLTAGE-DEPENDENT K+ AND Ca2+ CHANNELS IN CORONARY ELECTROMECHANICAL COUPLING: EFFECTS OF METABOLIC SYNDROME
... 1-1, (169)) Anatomists termed these arteries coronary from the Latin word coronarius meaning “of a crown” for the way the arteries encircled the heart However, the greatest hallmark arises from ... charged amino acids (lysine or arginine) in S4 transmembrane region and a tripeptide sequence motif located in P-loop of the S5-S6 linker represents the K+ selectivity filter for the pore (270) The ... 310) Taken together, these data indicate that the entire MetS milieu is critical in determining the overall functional expression of CaV1.2 channels in the coronary circulation Whether increases...
Ngày tải lên: 24/08/2014, 11:10
Salts Transport in Alkali Soil Reclamation by Gypsum and Prediction of Na Leaching in Field in China
... the point of the current supply electrode and 12 mm of the point of the voltage measurement electrode while insulating the other parts, and measures the electric conductivity of the soil in the ... salts in the case of the 0.5 wt% application The results of the lower sensor showed that most of the salts in the soil could be leached in PV and after that the ECv only decreased slightly These ... indicative of the behavior of the ions in the leachate The pH value in the 1.0 wt% application was lower than that in the 0.5 wt% application because of the lower pH value of gypsum Finally, the change...
Ngày tải lên: 05/09/2013, 09:38
Tài liệu Design and optimisation of conformal cooling channels in injection muolding tools docx
... exclusively on the virtual solid model of the object, to help the designer to determine the manufacturability of the parts of the mould The only requirement of the software is the choice of the material ... time increase (Fig 4) On the other hand, if the cooling channels can be made to conform to the shape of the part as much as possible (Fig 5), then the cooling system the cycle time can be significantly ... for the total cycle are of the same order, but with the gate positioned on the external surface the weld lines are lower than in the internal position, especially on the external surface The...
Ngày tải lên: 12/02/2014, 22:20
Tài liệu Báo cáo " Preparation and characteristics of LiF:Mg,Cu,Na,Si thermoluminescent material " pptx
... Comparing the glow curves shown in Fig 2, one can note that the ratio of the height of the main peak to that of the other small peaks in the LiF:Mg,Cu,Na,Si is much greater than that in the LiF:Mg,Ti ... into LiF, the excess Cu dopant compound agglutinated to the surface of the LiF crystallites Then the powder was washed with HCl solution After washing with HCl solution the colour of the LiF:Mg,Cu,Na,Si ... expand The dosimetric properties of the powder were studied In the TL glow curve of LiF:Mg,Cu,Na,Si powder the main dosimetric peak appeared in the range of 227-247 o C and the ratio of the height...
Ngày tải lên: 13/02/2014, 04:20
Báo cáo khoa học: ` Inhibition of human ether a go-go potassium channels by 2+ Ca ⁄calmodulin binding to the cytosolic N- and C-termini potx
... (between aminoacids 1–206 in steps of 3) and C-terminal (amino- acids 480–962 in steps of and amino- acids 645–895 in steps of 2) cytosolic domains of hEAG1 Binding of BODIPY FL-labeled hCaM in the ... subunits involving the C-terminal assembly domain (C) Magnified sections of the peptide array: The numbers indicate the first residue of the 15-mer peptides In the first row (showing BD-N), the peptide ... respectively For the N-terminal peptides, the fluorescence intensity increases until R162 is inside the peptide sequence, stays at a high level (DFI > 90%) as long as the peptides contain the amino acids...
Ngày tải lên: 07/03/2014, 12:20
Báo cáo khoa học: Puroindoline-a and a1-purothionin form ion channels in giant liposomes but exert different toxic actions on murine cells pptx
... the bath solution When the bath concentration of NaCl was decreased, the reversal potential of the current shifted from to )20 mV, which is close to the )28 mV equilibrium potential for Cl– The ... recorded at the indicated holding potentials (B) Current–voltage relationships in the presence of either 140 mM NaCl (s) or 40 mM NaCl (d) in the bathing solution Under these conditions, the voltages ... in the presence of either 140 or 40 mM NaCl in the bathing solution Under these conditions, the voltages corresponding to zero current were and +23 mV (arrow), respectively concentration in the...
Ngày tải lên: 07/03/2014, 12:20
Báo cáo khoa học: The natural mutation by deletion of Lys9 in the thrombin A-chain affects the pKa value of catalytic residues, the overall enzyme’s stability and conformational transitions linked to Na+ binding pdf
... affect the intrinsic fluorescence of the DK9 variant, the higher the surface exposure and flexibility of their side-chains to the solvent the smaller the intrinsic fluorescence of the enzyme The smaller ... computational approaches to prove the effects of the K9 deletion on the ionization of catalytic residues and the overall stability of the enzyme This investigation contributes to the unraveling of the ... expresses the acylation rate By contrast, the decrease in the DK9 Km value is consistent with better accommodation of the substrate into the catalytic pocket of the unprotonated form of the mutant,...
Ngày tải lên: 07/03/2014, 12:20
Báo cáo Y học: Variations in receptor site-3 on rat brain and insect sodium channels highlighted by binding of a funnel-web spider d-atracotoxin pdf
... sodium channels Indeed, they enhance 3H-batrachotoxin binding similarly to scorpion a-toxins; however, they differ from scorpion toxins in that they inhibit, rather than enhance, the activation of ... 25 The concentration of the radiolabelled toxins were determined according to the specific activity of 125I corresponding to 3000–2500 d.p.m.Æfmol)1 mono-iodotoxin, depending on the age of the ... vs time The rate of toxin association (kon) was determined from the equation: ½RLe kon ¼ kobs ½L½RLmax where [L] is the concentration of ligand, [RL]e is the concentration of the complex...
Ngày tải lên: 08/03/2014, 16:20
Báo cáo Y học: Properties of the Na+/H+ exchanger protein Detergent-resistant aggregation and membrane microdistribution potx
... of aggregation was evident at the top of the gels The amount of aggregate present at the top of the Western blot of the gels was not equal in amount to that lost at the lower molecular mass This ... immunoprecipitated from rat heart myocytes with an antibody against the C-terminal 178 amino acids of the protein The immunoprecipitate was then probed with the anti-NHE1 monoclonal antibody Ó FEBS 2002 4890 ... calculating the total volumes and concentrations of the fractions, together with the relative amount of Na+/H+ exchanger present in the supernatant and the pellet [19], it was found that over 80% of the...
Ngày tải lên: 08/03/2014, 16:20
Báo cáo Y học: Role of conserved residues within helices IV and VIII of the oxaloacetate decarboxylase b subunit in the energy coupling mechanism of the Na+ pump ppt
... pH The different mutants are indicated in the box on the top right The scale for the velocity of the mutants is indicated on the left side and that for the wild-type enzyme on the right side The ... still bind to the N373L mutant through coordination to the other ligands of the binding site (center I), but the binding becomes much weaker as emphasized by the dramatic increase of the Na+ ion ... in the presence of 360 mM NaCl The most dramatic effect of the R389A mutant is a shift of the pH optimum by more than 2.5 pH units to the alkaline compared to the wild-type This shift in the...
Ngày tải lên: 08/03/2014, 23:20
Báo cáo khoa học: The molecular chaperone a-crystallin incorporated into red cell ghosts protects membrane Na/K-ATPase against glycation and oxidative stress ppt
... significant to the overall amount of fructose in the cell The modifiers can all pass through the membrane so a steady state would be achieved at the molarity of the modifying agent The site of modification ... [24], in the presence of fructose (50 mM) to determine if the inhibitory effect of the modifier was through inhibition of the ATP-regenerating system Results The ghost cells eluted through the Sepharose ... inside the ghost cells Ghosts resealed in the presence of acrystallin showed the extra two a-crystallin subunit bands at around 20 kDa confirming the efficient sealing of the protein within the cells...
Ngày tải lên: 17/03/2014, 03:20
Báo cáo khoa học: Synthesis and characterization of Pi4, a scorpion toxin from Pandinus imperator that acts on K+ channels doc
... respectively The residues are numbered according to their positions within the Pi4 and rat Kv1.2 a-subunit amino acid sequences [1,24] (B) Magnified side view showing the interactions of sPi4 with the ... a-subunits [24] In the context of the channel, the four Glu332 from the four a-subunits are thought to interact, via salt bridges, with the four residues from the toxin ring of basic residues The production ... chymotrypsin) The resulting peptide fragments were separated by HPLC, then characterized by amino acid analysis, Edman sequencing and mass spectrometry (Fig 4) The results obtained from these techniques...
Ngày tải lên: 17/03/2014, 10:20
Báo cáo khoa học: C1–Membrane ATPases and channels doc
... further away from 4D5 The F5-cys antibody was far away from all the other three Fab-s Their distances from the membrane: F5-cys was the closest, while the others were relatively far from the ... epileptoformic activity in the rat hippocampal CA1 area was detected when slices were perfused with the kynurenic acid – the antagonist of the excitatory amino acid receptors Kynurenic acid concentration ... positioned within the pore lumen, where it is partly responsible for the toxin’s cation selectivity The results also propose that the N-terminus of the toxin extends through the pore to the other (trans)...
Ngày tải lên: 23/03/2014, 15:20
Báo cáo Y học: Na+/K+-ATPase as a signal transducer Zijian Xie and Amir Askari docx
... parallel with the other [30] The inescapable conclusion is that there are two pools of Na+/K+-ATPase within the plasma membrane with two distinct functions: one being the classical pool of the enzyme ... regulated by other cardiac hypertrophic stimuli These findings clearly establish that Na+/K+-ATPase indeed regulates the growth and the phenotype of the cardiac myocyte; and raise the intriguing ... in the control of myocyte growth, and that it is essential to delineate the pathways activated by each signal/receptor, and the nature of crosstalk among these, before the consequences of the...
Ngày tải lên: 24/03/2014, 00:21
Báo cáo khoa học: Functional reconstitution of mammalian ‘chloride intracellular channels’ CLIC1, CLIC4 and CLIC5 reveals differential regulation by cytoskeletal actin docx
... The solid line shows the zero-current level The central portion of the trace is expanded, with an encircled arrow to indicate the smallest measurable current transition (B) A record from another ... course know whether (or to what extent) the CLIC ‘cytoplasmic domain’ refolds in the membrane forms of the proteins, or indeed how the proteins assemble into subunits However, the tendency of ... microvilli [16] The proposed topology and membrane organization of CLIC1, CLIC4 and CLIC5 [17] suggest that these interactions could be retained in the membrane forms of the proteins, and the association...
Ngày tải lên: 30/03/2014, 04:20