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| 1 | Reversibility of minimal hepatic encephalopathy following liver transplantation in Egyptian cirrhotic patients显示文摘AIM To evaluate the reversibility of minimal hepatic encephalopathy(MHE) following liver transplantation(LT) in Egyptian cirrhotic patients. METHODS This prospective study included twenty patients with biopsy-proven liver cirrhosis listed for LT and twenty ageand sex-matched healthy control subjects. All underwent neuro-psychiatric examination, laboratory investigations, radiological studies and psychometric tests including trail making test A(TMT A), TMT B, digit symbol test and serial dotting test. The psychometric hepatic encephalopathy score(PHES) was calculated for patients to diagnose MHE. Psychometric tests were repeated six months following LT in the cirrhotic patient group. RESULTS Before LT, psychometric tests showed highly significant deficits in cirrhotic patients in comparison to controls(P < 0.001). There was a statistically significant improvement in test values in the patient group after LT; however, their values were still significantly worse than those of the controls(P < 0.001). The PHES detected MHE in 16 patients(80%) before LT with a median value of -7 ± 3.5. The median PHES value was significantly improved following LT, reaching-4.5 ± 5(P < 0.001), and the number of patients with MHE decreased to 11(55%). The pre-transplant model for end-stage liver disease(MELD) score ≥ 15 was significantly related to the presence of post-transplant MHE(P = 0.005). More patients in whom reversal of MHE was observed had a pre-transplant MELD score < 15.CONCLUSION Reversal of MHE in cirrhotic patients could be achieved by LT, especially in those with a MELD score < 15. | Mahmoud A Osman Moataz M Sayed Khaled A Mansour Shereen A Saleh Wesam A Ibrahim Sara M Abdelhakam Mohamed Bahaa Wael A Yousry Hosam S Elbaz Reginia N Mikhail Azza M Hassan Ehab H Elsayed Dalia A Mahmoud | 2016 | World Journal of Hepatology2016，8，30： | 11 |
| 2 | Microsecond scale vibrational spectroscopic imaging by multiplex stimulated Raman scattering microscopy显示文摘Real-time vibrational spectroscopic imaging is desired for monitoring cellular states and cellular processes in a label-free manner.Raman spectroscopic imaging of highly dynamic systems is inhibited by relatively slow spectral acquisition on millisecond to second scale.Here,we report microsecond scale vibrational spectroscopic imaging by lock-in free parallel detection of spectrally dispersed stimulated Raman scattering signal.Using a homebuilt tuned amplifier array,our method enables Raman spectral acquisition,within the window defined by the broadband pulse,at the speed of 32 μs and with close to shot-noise limited detection sensitivity.Incorporated with multivariate curve resolution analysis,our platform allows compositional mapping of lipid droplets in single live cells,observation of intracellular retinoid metabolism,discrimination of fat droplets from protein-rich organelles in Caenorhabditis elegans,spectral detection of fast flowing tumor cells and monitoring drug diffusion through skin tissue in vivo.The reported technique opens new opportunities for compositional analysis of cellular compartment in a microscope setting and high-throughput spectral profiling of single cells in a flow cytometer setting. | Chien-Sheng Liao Mikhail N Slipchenko Ping Wang Junjie Li Seung-Young Lee Robert A Oglesbee Ji-Xin Cheng | 2015 | Light(Science & Applications)2015，4，1： | 8 |
| 3 | Aging:A mitochondrial DNA perspective,critical analysis and an update显示文摘The mitochondrial theory of aging, a mainstream theory of aging which once included accumulation of mitochondrial DNA(mt DNA) damage by reactive oxygen species(ROS) as its cornerstone, has been increasingly losing ground and is undergoing extensive revision due to its inability to explain a growing body of emerging data. Concurrently, the notion of the central role for mtDNA in the aging process is being met with increased skepticism. Our progress in understanding the processes of mtDNA maintenance, repair, damage, and degradation in response to damage has largely refuted the view of mt DNA as being particularly susceptible to ROS-mediated mutagenesis due to its lack of 'protective' histones and reduced complement of available DNA repair pathways. Recent research on mitochondrial ROS production has led to the appreciation that mitochondria, even in vitro, produce much less ROS than previously thought, automatically leading to a decreased expectation of physiologically achievable levels of mtDNA damage. New evidence suggests that both experimentally induced oxidative stress and radiation therapy result in very low levels of mtDNA mutagenesis. Recent advances provide evidence against the existence of the 'vicious' cycle of mtDNA damage and ROS production. Meta-studies reveal no longevity benefit of increased antioxidant defenses. Simultaneously, exciting new observations from both comparative biology and experimental systems indicate that increased ROS production and oxidative damage to cellular macromolecules, including mtDNA, can be associated with extended longevity. A novel paradigm suggests that increased ROS production in aging may be the result of adaptive signaling rather than a detrimental byproduct of normal respiration that drives aging. Here, we review issues pertaining to the role of mtDNA in aging. | Inna N Shokolenko Glenn L Wilson Mikhail F Alexeyev | 2014 | World Journal of Experimental Medicine2014，4，4： | 6 |
| 4 | Neurohumoral,cardiac and inflammatory markers in the evaluation of heart failure severity and progression显示文摘Heart failure is common in adult population,accounting for substantial morbidity and mortality worldwide.The main risk factors for heart failure are coronary artery disease,hypertension,obesity,diabetes mellitus,chronic pulmonary diseases,family history of cardiovascular diseases,cardiotoxic therapy.The main factor associated with poor outcome of these patients is constant progression of heart failure.In the current review we present evidence on the role of established and candidate neurohumoral biomarkers for heart failure progression management and diagnostics.A growing number of biomarkers have been proposed as potentially useful in heart failure patients,but not one of them still resembles the characteristics of the'ideal biomarker.'A single marker will hardly perform well for screening,diagnostic,prognostic,and therapeutic management purposes.Moreover,the pathophysiological and clinical significance of biomarkers may depend on the presentation,stage,and severity of the disease.The authors cover main classification of heart failure phenotypes,based on the measurement of left ventricular ejection fraction,including heart failure with preserved ejection fraction,heart failure with reduced ejection fraction,and the recently proposed category heart failure with mid-range ejection fraction.One could envisage specific sets of biomarker with different performances in heart failure progression with different left ventricular ejection fraction especially as concerns prediction of the future course of the disease and of left ventricular adverse/reverse remodeling.This article is intended to provide an overview of basic and additional mechanisms of heart failure progression will contribute to a more comprehensive knowledge of the disease pathogenesis. | Ekaterina A Polyakova Evgeny N Mikhaylov Dmitry L Sonin Yuri V Cheburkin Mikhail M Galagudza | 2021 | Journal of Geriatric Cardiology2021，18，1： | 4 |
| 5 | Effect of intra-abdominal pressure on respiratory function in patients undergoing ventral hernia repair显示文摘AIM: To determine the influence of intra-abdominal pressure(IAP) on respiratory function after surgical repair of ventral hernia and to compare two different methods of IAP measurement during the perioperative period. METHODS: Thirty adult patients after elective repair of ventral hernia were enrolled into this prospective study.IAP monitoring was performed via both a balloontipped nasogastric probe [intragastric pressure(IGP), Ci MON, Pulsion Medical Systems, Munich, Germany] and a urinary catheter [intrabladder pressure(IBP), Uno Meter Abdo-Pressure Kit, Uno Medical, Denmark] on five consecutive stages:(1) after tracheal intubation(AI);(2) after ventral hernia repair;(3) at the end of surgery;(4) during spontaneous breathing trial through the endotracheal tube; and(5) at 1 h after tracheal extubation. The patients were in the complete supine position during all study stages.RESULTS: The IAP(measured via both techniques) increased on average by 12% during surgery compared to AI(P < 0.02) and by 43% during spontaneous breathing through the endotracheal tube(P < 0.01). In parallel, the gradient between РаСО2 and Et CO2 [Р(а-et)CO2] rose significantly, reaching a maximum during the spontaneous breathing trial. The PаO2/Fi O2 decreased by 30% one hour after tracheal extubation(P = 0.02). The dynamic compliance of respiratory system reduced intraoperatively by 15%-20%(P < 0.025). At all stages, we observed a significant correlation between IGP and IBP(r = 0.65-0.81, P < 0.01) with a mean bias varying from-0.19 mm Hg(2SD 7.25 mm Hg) to-1.06 mm Hg(2SD 8.04 mm Hg) depending on the study stage. Taking all paired measurements together(n = 133), the median IGP was 8.0(5.5-11.0) mm Hg and the median IBP was 8.8(5.8-13.1) mm Hg. The overall r2 value( n = 30) was 0.76(P < 0.0001). Bland and Altman analysis showed an overall bias for the mean values per patient of 0.6 mm Hg(2SD 4.2 mm Hg) with percentage error of 45.6%. Looking at changes in IAP between the different study stages, we found an excellent concordance coefficient of 94.9% comparing IBP and IGP( n = 117).CONCLUSION: During ventral hernia repair, the IAP rise is accompanied by changes in Р(а-et)CO2 and PаO2/Fi O2-ratio. Estimation of IAP via IGP or IBP demonstrated excellent concordance. | Konstantin M Gaidukov Elena N Raibuzhis Ayyaz Hussain Alexey Y Teterin Alexey A Smetkin Vsevolod V Kuzkov Manu LNG Malbrain Mikhail Y Kirov | 2013 | World Journal of Critical Care Medicine2013，2，2： | 2 |
| 6 | 基于石墨烯的光学控制窄带太赫兹开关(英文)显示文摘本文提出了一种光控太赫兹开关,该开关采用覆盖单层石墨烯的十字金属谐振器超表面。利用石墨烯表面电导率模型和有限元法计算了这种复合结构的光谱特性。模拟结果表明,在0.2 W/mm^2的光泵浦后,传输谱(调制深度为36.8%,Q-因子为250)出现了窄带共振衰减现象。另外,这种衰减的调制深度可以通过改变泵浦强度微调节。因此,光学可调谐太赫兹开关的设计将有助于太赫兹通信应用的功能组件开发。 | GREBENCHUKOV Alexander N ZAITSEV Anton D KHODZITSKY Mikhail K | 2018 | 中国光学2018，11，2： | 2 |
| 7 | Optimum design of wind tunnel contractions显示文摘 | Mikhail M N | 1979 | AIAA Journal1979，17，5： | 1 |
| 8 | Safety of dipeptidyl peptidase 4 inhibitors for treatment for type 2 diabetes显示文摘 | Mikhail N | 2011 | Curr Drug Safety2011，6，5： | 1 |
| 9 | Laplacian eignmaps for dimen- sionality reduction and data representation 显示文摘 | Mikhail B Partha N | 2003 | Neural Computation2003，15，6： | 1 |
| 10 | Rapid differenti- ation of Staphylococcus aureus, Staphylococcus epidermidis and other coagulase-negative staphylococci and meticillin susceptibility testing directly from growth-positive blood cultures by multiplex re- al-time PCR 显示文摘 | Jukes L Mikhail J Bome-Mannathoko N | 2010 | J Med Microbiol2010，59，2： | 1 |
| 11 | Obesity and hypertension 显示文摘 | Mikhail N Golub MS Tuck ML | 1999 | Prog Cardiovasc Dis1999，42，1： | 1 |
| 12 | A new design approach for fiber DFB lasers with improved efficiency 显示文摘 | Kuthan Yelen Louise M B Hickey Mikhail N Zervas | 2004 | IEEE J Quant Electron2004，40，6： | 1 |
| 13 | Scheduling with Batching:A Review显示文摘 | Potts C N Mikhail Y Kovalyov | 2000 | European J of Operational Research2000，120，2： | 1 |
| 14 | The metabolic syndrome:insulin resistance显示文摘 | Mikhail N | 2009 | Curr Hypertens Rep2009，11，2： | 1 |
| 15 | A new design approach for fiber DFB lasers with improved efficiency显示文摘 | Kuthan Y Louise M B H Mikhail N Z | 2004 | IEEE Journal of Quantum Electrics2004，40，6： | 1 |
| 16 | Ionized serum magnesium in type 2 diabetes mellitus:its correlation with total serum magnesium and hemoglobin Alc levels显示文摘 | Mikhail N Ehsanipoor K | 1999 | South Med J1999，92，： | 1 |
| 17 | Safety of dipeptidyl peptidase 4 inhibitors for treat- ment of type 2 diabetes 显示文摘 | Mikhail N | 2011 | Curr Drug Saf2011，6，5： | 1 |
| 18 | Performance of Li-ion cells with new electrolytes conceived for lowtemperature applications显示文摘 | SERGEY V S MIKHAIL Y K YEVGENIY N T | 2000 | Journal of Power Sources2000，87，： | 1 |
| 19 | Exenatide : a novel approach for treatment of type 2 diabetes 显示文摘 | Mikhail N | 2006 | South Med J2006，99，： | 1 |
| 20 | Concerning biological equivalent of radiation of light emitting diode and lamp light sources with correlated color temperature from 1800K up to 10000K显示文摘 | ANDREI V A ALEXANDER L Z MIKHAIL N M | 2012 | Light & Engineering2012，20，3： | 1 |
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