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| 1 | Chemopreventive Effects of Black Tea Polyphenols in Mouse Skin Model of Carcinogenesis显示文摘In the present investigations, the antitumorigenic effect of black tea polyphenols (BTP) in twcrstage mouse skin model of carcinogenesis was studied. The animals were initiated with a single 'subcarcinogenic' topical dose (52 μg/200 μl acetone ) of 7, 12-dimethylbenzanthracene (DMBA). To evaluate the anti-tumour initiating activity, BTP was topically applied twice a week for three weeks prior to DMBA application, followed by topical treatment with 12-o-tetradecanoyl phorbol-13-acetate (TPA) (5 μg/200 μl acetone, 2x/wk. ) as promoter. For evaluation of antitumor promoting activity, BTP was applied prior to each treatment of TPA. BTP application showed marked inhibitory effect as antitumour initiator as well as antitumour promoter in mouse skin medel of two-stage carcinogenesis. Since initiation involves genetic pathway and tumour promotion involves epigenetic pathway, it seems that BTP exerts its antitumorigenic effect by altering both genetic and epigenetic | SEEMA JAVED N. K. MEHROTRA AND YOGESHWER SHUKLA(Laboratory of Environmental Chrcinogenesis, Industrial Toxicology Research Centre, M. G. Marg, P. O. Box 80,Lucknow - 226001, India) | 1998 | Biomedical and Environmental Sciences1998，11，4： | 15 |
| 2 | Anti-diabetic vanadyl complexes reduced Alzheimer's disease pathology independent of amyloid plaque deposition显示文摘Association of Alzheimer's disease(AD) with cerebral glucose hypometabolism, likely due to impairments of insulin signaling,has been reported recently, with encouraging results when additional insulin is provided to AD patients. Here, we tested the potential effects of the anti-diabetic vanadium, vanadyl(IV) acetylacetonate(VAC), on AD in vitro and in vivo models. The experimental results showed that VAC at sub-micromolar concentrations improved the viability of neural cells with or without increased β-amyloid(Aβ) burden; and in APP/PS1 transgenic mice, VAC treatment(0.1 mmol kg-1 d-1) preserved cognitive function and attenuated neuron loss, but did not reduce brain Aβ plaques. Further studies revealed that VAC attenuated Aβpathogenesis by(i) activation of the PPARγ-AMPK signal transduction pathway, leading to improved glucose and energy metabolism;(ii) up-regulation of the expression of glucose-regulated protein 75(Grp75), thus suppressing p53-mediated neuronal apoptosis under Aβ-related stresses; and(iii) decreasing toxic soluble Aβ peptides. Overall, our work suggested that vanadyl complexes may have great potential for effective therapeutic treatment of AD. | Yaqiong Dong TessANDra Stewart Yue Zhang Min Shi Chang Tan Xue Li Lan Yuan Aanchal Mehrotra Jing Zhang Xiaoda Yang | 2019 | Science China(Life Sciences)2019，62，1： | 8 |
| 3 | Hematopoietic stem cell-derived adipocytes and fibroblasts in the tumor microenvironment显示文摘The tumor microenvironment(TME) is complex and constantly evolving. This is due, in part, to the crosstalk between tumor cells and the multiple cell types that comprise the TME, which results in a heterogeneous population of tumor cells and TME cells. This review will focus on two stromal cell types, the cancerassociated adipocyte(CAA) and the cancer-associated fibroblast(CAF). In the clinic, the presence of CAAs and CAFs in the TME translates to poor prognosis in multiple tumor types. CAAs and CAFs have an activated phenotype and produce growth factors, inflammatory factors, cytokines, chemokines, extracellular matrix components, and proteases in an accelerated and aberrant fashion. Through this activated state, CAAs and CAFs remodel the TME, thereby driving all aspects of tumor progression, including tumor growth and survival, chemoresistance, tumor vascularization, tumor invasion, and tumor cell metastasis. Similarities in the tumorpromoting functions of CAAs and CAFs suggest that a multipronged therapeutic approach may be necessary to achieve maximal impact on disease. While CAAs and CAFs are thought to arise from tissues adjacent to the tumor, multiple alternative origins for CAAs and CAFs have recently been identified. Recent studies from our lab and others suggest that the hematopoietic stem cell, through the myeloid lineage, may serve as a progenitor for CAAs and CAFs. We hypothesize that the multiple origins of CAAs and CAFs may contribute to the heterogeneity seen in the TME. Thus, a better understanding of the origin of CAAs and CAFs, how this origin impacts their functions in the TME, and thetemporal participation of uniquely originating TME cells may lead to novel or improved anti-tumor therapeutics. | Ying Xiong Lindsay T Mc Donald Dayvia L Russell Ryan R Kelly Katie R Wilson Meenal Mehrotra Adam C Soloff Amanda C LaRue | 2015 | World Journal of Stem Cells2015，7，2： | 6 |
| 4 | Repetitive Sequences in Plant Nuclear DNA:Types, Distribution, Evolution and Function显示文摘Repetitive DNA sequences are a major component of eukaryotic genomes and may account for up to 90% of the genome size. They can be divided into minisatellite, microsatellite and satellite sequences. Satellite DNA sequences are considered to be a fast-evolving component of eukaryotic genomes, comprising tandemly-arrayed, highly-repetitive and highly-conserved monomer sequences. The monomer unit of satellite DNA is 150–400 base pairs(bp) in length.Repetitive sequences may be species- or genus-specific, and may be centromeric or subtelomeric in nature. They exhibit cohesive and concerted evolution caused by molecular drive, leading to high sequence homogeneity. Repetitive sequences accumulate variations in sequence and copy number during evolution, hence they are important tools for taxonomic and phylogenetic studies, and are known as ‘‘tuning knobs' ' in the evolution. Therefore, knowledge of repetitive sequences assists our understanding of the organization, evolution and behavior of eukaryotic genomes. Repetitive sequences have cytoplasmic, cellular and developmental effects and play a role in chromosomal recombination. In the post-genomics era, with the introduction of next-generation sequencing technology, it is possible to evaluate complex genomes for analyzing repetitive sequences and deciphering the yet unknown functional potential of repetitive sequences. | Shweta Mehrotra Vinod Goyal | 2014 | Genomics, Proteomics & Bioinformatics2014，12，4： | 5 |
| 5 | Carcinogenic Helicobacter pylori in gastric pre-cancer and cancer lesions: Association with tobacco-chewing显示文摘AIM:To investigate the low gastric cancer incidence rate relative to the highly prevalent Helicobacter pylori(H.pylori)infection;data relevant to H.pylori infection during gastric carcinogenesis in Indian patients is currently lacking.METHODS:The present study examines the prevalence of H.pylori infection in DNA derived from 156endoscopic gastric biopsies of different disease groups that represent gastric pre-cancer[intestinal metaplasia(n=15),dysplasia(n=15)],cancer[diffuse adenocarcinoma(n=44),intestinal adenocarcinoma(n=21)],and symptomatic but histopathologically-normal controls(n=61).This was done by generic ureC polymerase chain reaction(PCR)and cagA-specific PCR that could specifically identify the carcinogenic H.pylori strain.RESULTS:Our analysis showed the presence of H.pylori infection in 61%of symptomatic histopathologically-normal individuals,however only 34%of control tissues were harboring the cagA+H.pylori strain.A similar proportion of H.pylori infection(52%)and cagA(26%)positivity was observed in the tumor tissue of the gastric cancer group.In comparison,H.pylori infection(90%)and cagA positivity(73%)were the highest in gastric pre-cancer lesions.In relation to tobacco and alcohol abuse,H.pylori infection showed an association with tobacco chewing,whereas we did not observe any association between tobacco smoking or alcohol abuse with prevalence of H.pylori infection in the tissue of any of the patient groups studied.CONCLUSION:High incidence of H.pylori infection and carcinogenic cagA positive strain in pre-cancer lesions during gastric carcinogenesis may be | Arvind Pandey Satyendra Chandra Tripathi Sutapa Mahata Kanchan Vishnoi Shirish Shukla Sri Prakash Misra Vatsala Misra Suresh Hedau Ravi Mehrotra Manisha DwivediZ Alok C Bharti | 2014 | World Journal of Gastroenterology2014，20，22： | 4 |
| 6 | 基于社区的突发心源性猝死风险预测评分显示文摘尽管在美国,心源性猝死是导致死亡的主要原因,但大多数心源性猝死的死亡者在死亡前并未被确定为处于危险中。研究者试图建立和验证基于人群的心源性猝死的风险评分。方法:社区动脉粥样硬化风险(atherosclerosis risk in communities,ARIC)研究记录了基线年龄45~64岁男性和女性的临床指标,分析中包括了11 335名白人和3780名非洲裔受试者。受试者随访时间〉10年,心源性猝死由医师确定。 | 刘青 叶鹏 Bogle BM Ning H Goldberger JJ Mehrotra S Lloyd-Jones DM | 2018 | 中华高血压杂志2018，26，4： | 3 |
| 7 | Berberine and Curcumin Target Survivin and STAT3 in Gastric Cancer Cells and Synergize Actions of Standard Chemotherapeutic 5-Fluorouracil显示文摘 | Arvind Pandey Kanchan Vishnoi Sutapa Mahata Satyendra Chandra Tripathi Sri Prakash Misra Vatsala Misra Ravi Mehrotra Manisha Dwivedi Alok C. Bharti | 2015 | Nutrition and Cancer2015，，8： | 2 |
| 8 | Modelling inflation in China—A regional perspective显示文摘 | Aaron Mehrotra Tuomas Peltonen Alvaro Santos Rivera | 2009 | China Economic Review2009，，2： | 2 |
| 9 | Texture evolution of five wrought magnesium alloys during route A equal channel angular extrusion: Experiments and simulations显示文摘 | S.R. Agnew P. Mehrotra T.M. Lillo G.M. Stoica P.K. Liaw | 2005 | Acta Materialia2005，，11： | 2 |
| 10 | Hepatoprotective potential of Fumaria indica Pugsley whole plant extracts, fractions and an isolated alkaloid protopine显示文摘 | Anshu Rathi Arvind Kumar Srivastava Annie Shirwaikar Ajay Kumar Singh Rawat Shanta Mehrotra | 2007 | Phytomedicine2007，，6： | 2 |
| 11 | S1P/S1PR1 signaling differentially regulates the allogeneic response of CD4 and CD8 T cells by modulating mitochondrial fission显示文摘Graft-versus-host disease (GVHD) significantly contributes to patient morbidity and mortality after allogeneic hematopoietic cell transplantation (allo-HSCT). Sphingosine-1-phosphate (S1P) signaling is involved in the biogenetic processes of different immune cells. In the current study, we demonstrated that recipient sphingosine kinase 1 (Sphk1), but not Sphk2, was required for optimal S1PR1-dependent donor T-cell allogeneic responses by secreting S1P. Using genetic and pharmacologic approaches, we demonstrated that inhibition of Sphk1 or S1PR1 substantially attenuated acute GVHD (aGVHD) while retaining the graft-versus-leukemia (GVL) effect. At the cellular level, the Sphk1/S1P/S1PR1 pathway differentially modulated the alloreactivity of CD4+ and CD8+ T cells;it facilitated T-cell differentiation into Th1/Th17 cells but not Tregs and promoted CD4+ T-cell infiltration into GVHD target organs but was dispensable for the CTL activity of allogeneic CD8+ T cells. At the molecular level, the Sphk1/S1P/S1PR1 pathway augmented mitochondrial fission and increased mitochondrial mass in allogeneic CD4+ but not CD8+ T cells by activating the AMPK/AKT/mTOR/Drp1 pathway, providing a mechanistic basis for GVL maintenance when S1P signaling was inhibited. For translational purposes, we detected the regulatory efficacy of pharmacologic inhibitors of Sphk1 and S1PR1 in GVHD induced by human T cells in a xenograft model. Our study provides novel mechanistic insight into how the Sphk1/S1P/S1PR1 pathway modulates T-cell alloreactivity and validates Sphk1 or S1PR1 as a therapeutic target for the prevention of GVHD and leukemia relapse. This novel strategy may be readily translated into the clinic to benefit patients with hematologic malignancies and disorders. | Linlu Tian Yongxia Wu Hee-Jin Choi Xiaohui Sui Xinlei Li M.Hanief Sofi Mohamed Faisal Kassir Xiao Chen Shikhar Mehrotra Besim Ogretmen Xue-zhong Yu | 2022 | Cellular & Molecular Immunology2022，19，11： | 2 |
| 12 | Physicochemical and bioactivity of cross-linked chitosan–PVA film for food packaging applications显示文摘 | S. Tripathi G.K. Mehrotra P.K. Dutta | 2009 | International Journal of Biological Macromolecules2009，，4： | 2 |
| 13 | Usefulness of red cell distribution width as a prognostic marker in pulmonary hypertension显示文摘 | Hampole CV Mehrotra AK Thenappan T | 2009 | Am J Cardiol2009，104，： | 1 |
| 14 | Comparative evaluation of megadose methylprednisolone with dexamethasone for treatment of primary optic neuritis 显示文摘 | Menon V Mehrotra A Saxena R | 2007 | Indian J Opthalmol2007，55，5： | 1 |
| 15 | Application of cytology and molecular biology in diagnosing premalignant or malignant oral lesions显示文摘 | Mehrotra R Gupta A Singh M | 2006 | Mol Cancer2006，5，： | 1 |
| 16 | Risks of chro- nic metabolic acidosis in patients with chronic kidney disease 显示文摘 | Kopple J D Kalantar-Zadeh K Mehrotra R | 2005 | Kidney Int: Suppl2005，，： | 1 |
| 17 | Pay for performance in the hospital setting:what is the state of the evidence?显示文摘 | Mehrotra A Damberg CL Sorbero MES | 2009 | American Journal of Medicine2009，24，1： | 1 |
| 18 | Gabor filter-based edge detection 显示文摘 | Mehrotra R | 1992 | Patten Recognition1992，25，12： | 1 |
| 19 | Texture evlotion of five wrought magnesium alloys during route A equal channel angular extrusion: Experiments and simulations显示文摘 | Angew S R Mehrotra P Lillo T M | 2005 | Acta Materialia2005，53，： | 1 |
| 20 | Perspectives for chitosan based antimicrobial film in food applications显示文摘 | Durra P K Tripathi S Mehrotra G K | 2009 | Food ChemistiT2009，114，： | 1 |
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