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71.
Michael R. Narkewicz Simon Horslen Regina M. Hardison Benjamin L. Shneider Norberto Rodriguez-Baez Estella M. Alonso Vicky L. Ng Mike A. Leonis Kathleen M. Loomes David A. Rudnick Philip Rosenthal Rene Romero Girish C. Subbarao Ruosha Li Steven H. Belle Robert H. Squires 《Clinical gastroenterology and hepatology》2018,16(11):1801-1810.e3
72.
Ray U Khan GA Chakraborty K Basuroy S Patra SC Girish G Bhattacharya G Sinha AK 《Journal of thrombosis and thrombolysis》2012,33(3):218-229
Insulin inhibits platelet aggregation through nitric oxide synthesis by stimulating platelet insulin activated nitric oxide
synthase. Impaired platelet insulin activated nitric oxide synthase in acute myocardial infarction (AMI) patients had been
reported and thus our aim was to identify and isolate the factors impairing insulin activated nitric oxide in acute myocardial
infarction patients’ plasma and study its effect on platelets aggregation in vitro. The insulin activated nitric oxide synthase
inhibitor was identified as a protein and was purified from the plasma of AMI subjects using DEAE cellulose and Sephadex G-50
column, molecular weight determined by SDS-PAGE, nitric oxide quantified by methaemoglobin method, inhibitor protein quantified
in plasma by immunoblot and ELISA, platelet aggregation studies done using an aggregometer, thromboxane-A2 in the platelets
determined by radioimmunoassay, 125I-insulin radioligand binding studies done using normal subject platelets. The purified nitric oxide synthase inhibitor protein
was ~66 kDa, concentration in AMI subjects’ plasma varied from 114 to 9,090 μM and was undetected in normal subjects’ plasma.
The inhibitor protein competes with insulin for insulin receptor binding sites. The Incubation of the normal subject PRP with
5.0 μM inhibitor for 30 min followed by 0.4 μM ADP addition caused platelet aggregation in vitro, 130 μM aspirin or 400 μU
insulin/ml addition was able to abrogate 0.4 μM ADP induced platelet aggregation even in the presence of 5.0 μM inhibitor.
A potent inhibitory protein against insulin activated nitric oxide synthase in platelets appears in circulation of AMI subjects
impairing nitric oxide production, potentiating ADP induced platelet aggregation and increasing the thromboxane-A2 level in
platelets. 相似文献
73.
74.
Diana Magee Douglas Cheung Amanda Hird Srikala S. Sridhar Charles Catton Peter Chung Alejandro Berlin Padraig Warde Alexandre Zlotta Neil Fleshner Girish S. Kulkarni 《Canadian Urological Association journal》2022,16(4):E197
IntroductionRadical cystectomy (RC) is the historic gold standard treatment for muscle-invasive bladder cancer (MIBC), but trimodal therapy (TMT) has emerged as a valid therapeutic option for select patients. Given that prospective clinical trials have been difficult to perform in this area, our aim was to compare these two primary treatment strategies using decision analytic methods.MethodA two-dimensional Markov microsimulation model was constructed using TreeAge Pro to compare RC and TMT for patients with newly diagnosed MIBC. A comprehensive literature search was used to populate model probabilities and utilities. Our primary outcome was quality-adjusted life expectancy (QALE). Secondary outcomes included crude life expectancy (LE) and bladder cancer recurrences. The simulated patient for our model was an adult with MIBC (pT2-4 N0 M0) who was a candidate for either RC or TMT.ResultsA total of 500 000 patients were simulated. TMT resulted in an estimated mean QALE of 7.48 vs. 7.41 for RC. However, the average LE for patients treated with TMT was lower compared with RC (10.20 vs. 10.74 years). A sensitivity analysis evaluating the impact of age showed that younger patients treated with RC had greater QALE and longer LE than those treated with TMT; inverse findings were observed for elderly patients. Overall, 39.4% of patients treated with TMT experienced a bladder recurrence.ConclusionsRC results in a longer LE compared to TMT (0.54 years), but with a lower QALE (−0.07 years). The preferred treatment strategy varied with patient age. 相似文献
75.
Kay M. Abdullah Girish Luthra Jerzy J. Bilski S. Ahmed Abdullah Lawrence P. Reynolds Dale A. Redmer Anna T. Grazul-Bilska 《Endocrine》1999,10(1):35-41
Wound healing involves the interactions of many cell types, and is controlled in part by growth factors. Intercellular communication
mediated by gap junctions is considered to play an important role in the coordination of cellular metabolism during the growth
and development of tissues and organs. Basic fibroblast growth factor (bFGF), known to be important in wound healing, has
been found to increase Cx43 expression and intercellular communication in endothelial cells and cardiac fibroblasts. It has
been proposed that an increased coupling is necessary for the coordination of these cells in wound healing and angiogenesis,
and that one of the actions of bFGF is to modulate intercellular communication. The aim of our study was to evaluate the effects
of bFGF on gap junctional intercellular communication (GJIC) in vitro, and the presence of gap junctional proteins connexin
(Cx) 26, Cx32, and Cx43 in fibroblasts of diabetic and nondiabetic individuals. Fibroblast cell lines (n=10) were cultured for 3 d in serum-free media with or without bFGF (3 ng/mL). Cells were evaluated for the rate of GJIC by
using laser cytometry, and for the presence of Cx26, Cx32, and Cx43 by immunohistochemical and Western analyses. All cell
types communicated via contact-dependent mechanisms. The rate of GJIC was greater (p<0.01) for diabetic than for nondiabetic fibroblasts (4.1±0.01 vs 3.3±0.01 %/min). bFGF increased (p<0.01) the rate of GJIC for diabetic (4.9±0.01 vs 4.1±0.01%) and nondiabetic (4.1±0.01 vs 3.3±0.01%) fibroblasts. Immunohistochemistry
identified Cx26 in the cytoplasm, Cx32 was not detected, and Cx43 was present on the cellular borders in all cultures. Image
analysis of immunofluorescent staining demonstrated that bFGF increased (p<0.05) Cx43 expression in diabetic and nondiabetic fibroblasts. Western immunoblot analysis revealed bands at 43–46 kD that
were similar in volume for diabetic and nondiabetic fibroblasts. Thus, gap junctions involving Cx43 and GJIC among fibroblasts
appear to be targets for bFGF. Fibroblasts of diabetic individuals appear to have an increased rate of cell-cell coupling,
correlating with a decreased rate of proliferation. 相似文献
76.
The p53 tumor-suppressor protein plays an integral role in apoptosis. Perturbations in peripheral lymphocyte (PL) apoptosis
may be associated with rheumatoid arthritis (RA). Polymorphisms at codon 72 of p53 (arginine (Arg72) to proline transition)
confers differences in mitochondrial translocation and apoptosis inducing capabilities of p53 in vitro. We examined associations
of this polymorphism with PL apoptosis, mitochondrial depolarization, and clinical markers of disease activity in a cohort
of black South African RA patients. Genotypes were determined by polymerase chain reaction-restriction fragment length polymorphism.
PL apoptosis was measured using the annexin-V assay and mitochondrial membrane potential with the JC-1 assay. Clinical and
laboratory parameters were recorded for all patients. Statistical differences in these parameters were investigated according
to genotype. Genotype distribution did not differ significantly between RA patients and controls (Arg/Arg, Arg/Pro, Pro/Pro:
12%, 46%, and 42% versus 3%, 34%, and 63%), despite significantly higher frequency of the Arg72 allele in patients (p = 0.0406). There was no significant difference in PL apoptosis and mitochondrial depolarization based on p53 codon 72 genotype.
In addition, clinical markers of disease activity were not significantly different between genotypes. We conclude that p53
codon 72 genotype does not influence PL apoptosis or mitochondrial depolarization and is not associated with clinical markers
of disease in RA. 相似文献
77.
78.
Afzal Haq Asif Mahendra S. Mahajan Nagaraja Sreeharsha Vikas V. Gite Bandar E. Al-Dhubiab Feroze Kaliyadan Shivakumar H. Nanjappa Girish Meravanige Dalal Mishary Aleyadhy 《Materials》2022,15(6)
The present investigation demonstrates renewable cardanol-based polyol for the formulation of nanocomposite polyurethane (PU) coatings. The functional and structural features of cardanol polyol and nanoparticles were studied using FT-IR and 1H NMR spectroscopic techniques. The magnetic hydroxyapatite nanoparticles (MHAPs) were dispersed 1–5% in PU formulations to develop nanocomposite anticorrosive coatings. An increase in the strength of MHAP increased the anticorrosive performance as examined by immersion and electrochemical methods. The nanocomposite PU coatings showed good coating properties, viz., gloss, pencil hardness, flexibility, cross-cut adhesion, and chemical resistance. Additionally, the coatings were also studied for surface morphology, wetting, and thermal properties by scanning electron microscope (SEM), contact angle, and thermogravimetric analysis (TGA), respectively. The hydrophobic nature of PU coatings increased by the addition of MHAP, and an optimum result (105°) was observed in 3% loading. The developed coatings revealed its hydrophobic nature with excellent anticorrosive performance. 相似文献
79.
Mohit D. Gupta M.D. D.M. Girish Mp M.D. D.M. Amit Mittal M.D. D.M. Sanjay Tyagi M.D. D.M. 《Echocardiography (Mount Kisco, N.Y.)》2010,27(9):E117-E118
A young male presented with progressively increasing breathlessness for one year. Echocardiography showed a cystic echolucent cavity in interventricular septum communicating with sinus of Valsalva. A diagnosis of unruptured aneurysm of Valsalva dissecting into the interventricular septum was made. This complication is extremely rare and early recognition may prevent a potential catastrophe. (Echocardiography 2010;27:E117‐E118) 相似文献
80.
Poonam R. Bajaj Kanishka Bhunia Leslie Kleiner Helen S. Joyner Denise Smith Girish Ganjyal 《Journal of microencapsulation》2017,34(2):218-230
Unhydrolysed pea protein (UN) forms very viscous emulsions when used at higher concentrations. To overcome this, UN was hydrolysed using enzymes alcalase, flavourzyme, neutrase, alcalase–flavourzyme, and neutrase–flavourzyme at 50?°C for 0?min, 30?min, 60?min, and 120?min to form hydrolysed proteins A, F, N, AF, and NF, respectively. All hydrolysed proteins had lower apparent viscosity and higher solubility than UN. Foaming capacity of A was the highest, followed by NF, N, and AF. Hydrolysed proteins N60, A60, NF60, and AF60 were prepared by hydrolysing UN for 60?min and used further for microencapsulation. At 20% oil loading (on a total solid basis), the encapsulated powder N60 had the highest microencapsulation efficiency (ME?=?56.2). A decrease in ME occurred as oil loading increased to 40%. To improve the ME of N60, >90%, UN and maltodextrin were added. Flowability and particle size distribution of microencapsulated powders with >90% microencapsulation efficiency and morphology of all powders were investigated. This study identified a new way to improve pea protein functionality in emulsions, as well as a new application of hydrolysed pea protein as wall material for microencapsulation. 相似文献