Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Vesicular fibers

However, 2 also affected the regulation of actin stress fiber formation [19]. Rho proteins are involved in the regulation of various cytoskeletal structures, and RhoB is believed to be one of the prime targets of FTase inhibitors. Rho B is apparently both geranylgeranylated and farnesylated [20, 21]. If cells were treated with 2, vesicular localization of Rho B was inhibited. Thus 2 may also inhibit the farnesylation of Rho B, thereby interfering with actin stress fiber formation [22]. [Pg.120]

A telesurgjcal robotic system for the transurethral resection of bladder tumors has been reported previously [48]. The slave system consists of a distal dexterous manipulator that is basically a continuum robot composed of two serially-stacked multibackbone sections. The slave is equipped with a pair of biopsy forceps, a fiberscope, and a laser cautery fiber and is deployed through a standard resectoscope. Each multibackbone section is actuated by three actuators and provides 2 DOFs that, along with a translation, provide a total of 5 DOFs at the tip. The system was evaluated in an ex vivo bovine bladder. The results demonstrated that better intra-vesicular dexterity and submiUimeter accuracy could be achieved by using the system. [Pg.105]

Figure 7 Simple model of the concentration of vesicular events as determined by fast-scan rate cyclic voltammetry. (A) Pictorial demonstration that the area of the electrode used for oxidation/reduction of the DA species is very different for the cellular case compared with that in standard solution. (B) A head-on view depicting the difference in electrode area used in the above two cases. Bevehng a carbon fiber on a 45° angle creates an elliptical surface with major and minor radii of about 3.5 and 2.5 i,m, respectively. It is apparent that a large difference exists between the vesicular area and that of the total electrode. (Reproduced from Ana/. Chem. with permission [13].)... Figure 7 Simple model of the concentration of vesicular events as determined by fast-scan rate cyclic voltammetry. (A) Pictorial demonstration that the area of the electrode used for oxidation/reduction of the DA species is very different for the cellular case compared with that in standard solution. (B) A head-on view depicting the difference in electrode area used in the above two cases. Bevehng a carbon fiber on a 45° angle creates an elliptical surface with major and minor radii of about 3.5 and 2.5 i,m, respectively. It is apparent that a large difference exists between the vesicular area and that of the total electrode. (Reproduced from Ana/. Chem. with permission [13].)...
Figure 21 AMPH exposure decreases the quantal amplitude of individual release events from PC 12 cells. Randomly chosen amperometric electrochemical records of quantal release for (A) a control cell and (B) a cell that has been incubated in 10 i,M d-AMPH for 10 min. Cells were stimulated by local perfusion (30 nL of 1 mM nicotine in 105 mM KCl saline) to induce vesicular exocytosis. (C) A histogram displaying the percentage of peak sizes in paired control and AMPH-treated cells. Peaks are combined in intervals of 30,000 molecules. The lower limit of each bin size is shown on the abscissa. All data were obtained using a 5 pm carbon fiber electrode held at 0.65 V vs. SSCE. (Reproduced from J. Neu-rosci. with permission [52].)... Figure 21 AMPH exposure decreases the quantal amplitude of individual release events from PC 12 cells. Randomly chosen amperometric electrochemical records of quantal release for (A) a control cell and (B) a cell that has been incubated in 10 i,M d-AMPH for 10 min. Cells were stimulated by local perfusion (30 nL of 1 mM nicotine in 105 mM KCl saline) to induce vesicular exocytosis. (C) A histogram displaying the percentage of peak sizes in paired control and AMPH-treated cells. Peaks are combined in intervals of 30,000 molecules. The lower limit of each bin size is shown on the abscissa. All data were obtained using a 5 pm carbon fiber electrode held at 0.65 V vs. SSCE. (Reproduced from J. Neu-rosci. with permission [52].)...
Applications coatings, containers, fibers, laminates, lithium batteries, vesicular systems ... [Pg.464]

However, the better authenticated cytotoxic components of virions are their proteins. As mentioned previously, the fiber antigen of adenoviruses has a marked cytotoxic effect as demonstrated by its capacity to inhibit division of KB cells, and to inhibit multiplication of adenovirus 5 and poliovirus in KB cells, as well as inhibiting RNA, DNA, and protein synthesis in uninfected and adenovirus-infected KB cells (Levine and Ginsberg, 1967). The isolated glycoprotein of vesicular stomatitis virus at exceedingly large concentrations significantly impairs macromolecular synthesis of BHK-21 cells (McSharry and Choppin, 1978) and can be assumed to have a cytotoxic effect. [Pg.33]

Laskowski et al. (1975) reported ultrastructural changes in the subsynaptic folds that were quite varied, even between muscle fibers from the same diaphragms of rats acutely treated with paraoxon. The fact that some endplates were totally degenerated after 2 days of paraoxon treatment, while others appeared almost normal even after 5 days, indicates that some endplates are more resistant than others. The most consistent change at the endplates was the presence of vesicular structures in the synaptic clefts. Some regions of the subsynaptic... [Pg.589]

FIGURE 12.4 (a) Main steps of vesicular dense-core exocytosis (see text), (b) The describedexocytotic event is correlated to its current spike recorded by amperometry at a carbon fiber UME in the artificial synapse configuration. [Pg.444]

Scheme 6.9 Top Structure and vesicular assembly of NDI-1. Bottom CT-interaction-mediated morphological transition (2D-to-lD vesicle-to-fiber) and gelation by pyrene intercalation. Reproduced with permission om Ref. [66], copyright 2012 WILEY-VCH Verlag GmbH Co. KGaA, Weinheim... Scheme 6.9 Top Structure and vesicular assembly of NDI-1. Bottom CT-interaction-mediated morphological transition (2D-to-lD vesicle-to-fiber) and gelation by pyrene intercalation. Reproduced with permission om Ref. [66], copyright 2012 WILEY-VCH Verlag GmbH Co. KGaA, Weinheim...
Interestingly, the electron deficient NDI chromophores could accommodate electron rich, water insoluble pyrene in the vesicular membrane through intercalation in a stoichiometric ratio. The CT interactions (as evident from the red coloration of the solution) thus provided an additional stabilization but did not disrupt the hydrogen-bonding framework between the hydrazide moieties as found from the FTIR studies. Moreover, pyrene intercalation resulted in a 2D-to-lD vesicle-to-fiber transition and upon prolonged standing (2-3 days), the red solution turned to be more viscous and above a threshold concentration (5 mM of each component), a transparent red gel (Fig. 6.39) was obtained. TEM images (Fig. 6.39) recorded for the gel revealed the presence of micrometer-sized fibers, in clear contrast to the spherical vesicles observed for NDI-1. [Pg.223]


See other pages where Vesicular fibers is mentioned: [Pg.45]    [Pg.49]    [Pg.110]    [Pg.229]    [Pg.160]    [Pg.45]    [Pg.49]    [Pg.110]    [Pg.229]    [Pg.160]    [Pg.128]    [Pg.132]    [Pg.97]    [Pg.323]    [Pg.82]    [Pg.122]    [Pg.10]    [Pg.192]    [Pg.133]    [Pg.31]    [Pg.149]    [Pg.29]    [Pg.673]    [Pg.269]    [Pg.146]    [Pg.269]    [Pg.14]    [Pg.49]    [Pg.112]    [Pg.314]    [Pg.128]    [Pg.577]    [Pg.106]    [Pg.61]    [Pg.206]    [Pg.176]    [Pg.178]    [Pg.49]    [Pg.631]    [Pg.444]    [Pg.457]    [Pg.528]   
See also in sourсe #XX -- [ Pg.45 , Pg.110 , Pg.111 , Pg.112 , Pg.229 , Pg.230 , Pg.231 , Pg.232 , Pg.233 , Pg.234 , Pg.235 , Pg.236 , Pg.237 ]




SEARCH



Vesicular

© 2024 chempedia.info