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Plant based metabolomics:a future prospective and versatile tool for metabolite databases of Curcuma longa

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未来食品学报(英文) 2024年第1期4卷 37-47页

作者： Shuvendhu Gupta Amrat Pal Singh gurpreet Singh Xianting Ding Alok.Sharma Department of Pharmacognosy ISF College of PharmacyMoga 142001India Department of Pharmaceutical Chemistry ISF College of PharmacyMoga 142001India School of Biomedical Engineering Med-X Research InstituteShanghai Jiao Tong UniversityShanghai 200030China

Sophisticated analytical instruments are used for quality evaluation and scientific validation to compliance the Sophisticated analytical instruments are used for quality evaluation and scientific validation to compliance the mark.t ***,increase in demand of Curcuma longa has led to a high swing in small and medium food *** present review is devoted to an in-depth information on metabolite database of *** from different analytical techniques such as high-performance thin-layer chromatography(HPTLC),liquid chromatography-mass spectrometry,gas chromatography-mass spectrometry and nuclear magnetic *** work.highlights different extraction methods,phytochemistry along with structure activity relationship,nutritional profiling,mark.t viability and pharmacology of *** bioactives of *** depends on various factors such as plants growth,temperature,humidity,soil type,collection,drying and extraction *** factors can contribute in quality evaluation of the food supplements if need to be *** introduction of omics approaches can helpful to explore the quality and identification of potential lead of *** results could play an essential role in the area of food-phyto based ***,metabolomics techniques may provide a analytical platfom by combination of different"omics"data souces for future esearch to food sand herbal based products.

关键词： Curcuma longa Omics approaches Multidisciplinary method Quality control Metabolomics

Colloidal quantum dots and two-dimensional material heterostructures for photodetector applications

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Electron 2024年第2期2卷 123-158页

作者： Jingying Luo gurpreet Singh Selopal Xin Tong Zhiming Wang Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengduChina Department of Engineering Faculty of AgricultureDalhousie UniversityTruroNova ScotiaCanada k.y Laboratory of Quantum Physics and Photonic Quantum Information Ministry of EducationUniversity of Electronic Science and Technology of ChinaChengduChina Yangtze Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhouChina Institute for Advanced Study Chengdu UniversityChengduChina

Photodetectors(PDs)are optoelectronic devices that convert optical signals into electrical ***,there has been a tremendous increase in research interest in PDs based on colloidal quantum dots(QDs)and two-dimensional(2D)material heterostructures owing to the strong light-absorption capacity and the well-adjustable band gap of QDs and the superior charge carriers transfer ability of 2D *** particular,the heterojunction formed between QDs and 2D materials can effectively enhance the separation and transport of photogenerated charge carriers,which is expected to establish PDs with ultrahigh photoconductive gain,high responsivity,and *** review aimed to summarize the state-of-the-art advances in the research of QDs/2D material nanohybrid PDs,including the device parameters,archi-tectures,work.ng mechanisms,and fabrication *** prog-ress of hybrid PDs based on the heterojunction of QDs with different 2D materials,along with their innovative applications,are comprehensively *** the end,the challenges and feasible strategies in future research and development are briefly proposed.

关键词： heterostructures photodetectors quantum dots two-dimensional materials

Global geoepidemiology of gastrointestinal surgery rates in Crohn’s disease

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World Journal of Gastrointestinal Surgery 2024年第6期16卷 1835-1844页

作者： Simcha Weissman Muhammad Aziz Ayrton Bangolo Vignesh k.Nagesh Htat Aung Midhun Mathew Lino Garcia Shiva A Chandar Praveena k.ramthoti Harinder Bawa Aseel Alshimari Yabets k.jela Nazish Mehdi Chrishanti A Joseph Athri k.dali Rohan k.mar Priya Goyal Sanya Satheesha Fnu Nivedita Nicole Tesoro Tanni Sethi gurpreet Singh Areej Belal Alina Intisar Hirra k.alid Samuel Cornwell Suchith B Suresh k.reem Ahmed k.rabo k.Marole Om P Anand Rahat B Reshi Tej I Mehta Sameh Elias Joseph D Feuerstein Department of Medicine Hackensack Meridian Health Palisades Medical CenterNorth BergenNJ 07047United States Division of Gastroenterology and Hepatology University of Toledo Medical CenterToledoOH 43614United States Department of Medicine University of WashingtonSeattleWA 98195United States Department of Radiology Johns Hopkins University HospitalBaltimoreMD 21218United States Division of Gastroenterology Beth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMA 02215United States

BACk.ROUND Data regarding the worldwide gastrointestinal surgery rates in patients with Crohn’s disease(CD)remains *** To systematically review the global variation in the rates of surgery in *** A comprehensive search analysis was performed using multiple electronic databases from inception through July 1,2020,to identify all full text,randomized controlled trials and cohort studies pertaining to gastrointestinal surgery rates in adult patients with *** included continent based demographic data,CD surgery rates over time,as well as the geoepidemiologic variation in CD surgery *** analyses were conducted using *** Twenty-three studies spanning four continents were *** median proportion of persons with CD who underwent gastrointestinal surgery in studies from North America,Europe,Asia,and Oceania were 30%(range:1.7%-62.0%),40%(range:0.6%-74.0%),17%(range:16.0%-43.0%),and 38%*** clear association was found regarding the proportion of patients undergoing gastrointestinal surgery over time in North America(R^(2)=0.035)and Europe(R^(2)=0.100).A moderate,negative association was seen regarding the proportion of patients undergoing gastrointestinal surgery over time(R^(2)=0.520)in *** There appears to be significant inter-continental variation regarding surgery rates in *** evidencebased guidelines accounting for the geographic differences in managing patients with CD is ***,as a paucity of data on surgery rates in CD exists outside the North American and European continents,future studies,particularly in less studied locales,are warranted.

关键词： Gastrointestinal surgery Crohn’s disease Geoepidemiology Inflammatory bowel disease Prevalence

Entropically favoured through space charge transfer‘lighted’photosensitizing assemblies for‘metal free’regulated photooxidation of alcohols and aldehydes

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Aggregate

Aggregate 2022年第2期3卷 143-153页

作者： gurpreet k.ur Harpreet k.ur Mandeep k.ur Manoj k.mar Vandana Bhalla Department of Chemistry Centre of Advance Studies-IIGuru Nanak Dev UniversityAmritsarIndia

Strong acceptor-weak.acceptor system FN-TPy has been designed and synthesized,which undergoes solvent dependent self-assembly in mixed aqueous media to generate through space intermolecular charge transfer *** as-prepared entropically favoured assemblies of FN-TPy exhibit excellent photostability and photosensitizing properties in the assembled state to activate aerial oxygen for efficient generation of reactive oxygen species through Type-I and Type-II *** FN-TPy exhibits excellent potential for regulated oxidation of alcohols and aldehydes under mild reaction conditions(visible light irradiation,aqueous media,room temperature)using aerial oxygen as the‘oxidant’.The present study demonstrates the potential of FN-TPy assemblies to catalyse controlled oxidation of benzyl alcohol to benzoic acid.

关键词： aggregated assemblies molecular oxygen activation oxidations photosensitizer through space charge transfer

Pulsed laser deposited Al-doped ZnO thin films for optical applications

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Progress in Natural Science:Materials International 2015年第1期25卷 12-21页

作者： gurpreet k.ur Anirban Mitra k.L.Yadav High Power laser Lab Department of PhysicsIndian Institute of Technology Roorkee

Highly transparent and conducting Al-doped Zn O(Al:Zn O) thin films were grown on glass substrates using pulsed laser deposition *** profound effect of film thick.ess on the structural, optical and electrical properties of Al:Zn O thin films was observed. The X-ray diffraction depicts c-axis, plane(002) oriented thin films with hexagonal wurtzite crystal structure. Al-doping in Zn O introduces a compressive stress in the films which increase with the film thick.ess. AFM images reveal the columnar grain formation with low surface roughness. The versatile optical properties of Al:Zn O thin films are important for applications such as transparent electromagnetic interference(EMI) shielding materials and solar cells. The obtained optical band gap(3.2–3.08 e V) was found to be less than pure Zn O(3.37 e V) films. The lowering in the band gap in Al:Zn O thin films could be attributed to band edge bending phenomena. The photoluminescence spectra gives sharp visible emission peak., enables Al:Zn O thin films for light emitting devices(LEDs) applications. The current–voltage(I–V) measurements show the ohmic behavior of the films with resistivity(ρ) 10-3Ω cm.

关键词： Al:ZnO thin films Transparent conducting oxide(TCO) Pulsed Laser Deposition(PLD) Optical properties Photoluminescence(PL)

Dynamic changes in the expression of apoptosis-related genes in differentiating gonocytes and in seminomas

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Asian Journal of Andrology 2015年第3期17卷 403-414页

作者： gurpreet Mank. The Research Institute of the McGill University Health Centre McGill University Montreal Quebec Canada Departments of Medicine McGill University Montreal Quebec Canada Department of Pharmacology and Therapeutics McGill University Montreal Quebec Canada

Apoptosis is an integral part of the spermatogenic process, necessary to maintain a proper ratio of Sertoli to germ cell numbers and provide an adequate microenvironment to germ cells. Apoptosis may also represent a protective mechanism mediating the elimination of abnormal germ cells. Extensive apoptosis occurs between the first and second postnatal week., at the point when gonocytes, precursors of spermatogonial stem cells, should have migrated toward the basement membrane of the tubules and differentiated into spermatogonia. The mechanisms regulating this process are not well-understood. Gonocytes undergo phases of proliferation, migration, and differentiation which occur in a timely and closely regulated manner. Gonocytes failing to migrate and differentiate properly undergo apoptosis. Inadequate gonocyte differentiation has been suggested to lead to testicular germ cell tumor （TGCT） formation. Here, we examined the expression levels of apoptosis-related genes during gonocyte differentiation by quantitative real-time polymerase chain reaction, identifying 48 pro- and anti-apoptotic genes increased by at least two-fold in rat gonocytes induced to differentiate by retinoic acid, when compared to untreated gonocytes. Further analysis of the most highly expressed genes identified the pro-apoptotic genes Gadd45a and Cycs as upregulated in differentiating gonocytes and in spermatogonia compared with gonocytes. These genes were also significantly downregulated in seminomas, the most common type of TGCT, compared with normal human testicular tissues. These results indicate that apoptosis-related genes are actively regulated during gonocyte differentiation. Moreover, the down-regulation of pro-apoptotic genes in seminomas suggests that they could represent new therapeutic targets in the treatment of TGCTs.

关键词： apoptosis differentiation gonocytes seminomas spermatogonia

In situ and operando infrared spectroscopy of battery systems:Progress and opportunities

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能源化学:英文版 2023年第6期81卷 472-491,I0011页

作者： Murilo M.Amaral Carla G.Real Victor Y.Yuk.hiro Gustavo Doubek.Pablo S.Fernandez gurpreet Singh Hudson Zanin Advanced Energy Storage Division Center for Innovation on New EnergiesSchool of Electrical and Computer EngineeringUniversity of CampinasCampinasSP 13083-852Brazil Alan Levin Department of Mechanical and Nuclear Engineering Kansas State UniversityManhattanKS 66506USA Chemistry Institute Center for Innovation on New EnergiesUniversity of CampinasCampinasSP 13083-970Brazil Advanced Energy Storage Division Center for Innovation on New EnergiesSchool of Chemical EngineeringUniversity of CampinasCampinasSP 13083-852Brazil

In situ and operando infrared spectroscopies are powerful techniques to support the design of novel materials for batteries and the development of new battery *** techniques can support the study of batteries by identifying the formation of new species and monitoring electrochemical energy ***,few work. have employed these techniques,which can be used to investigate various materials,including systems beyond lithium-ion technology,in the research of ***,this review presents a comprehensive overview focusing on the main contributions of in situ and operando infrared spectroscopy for lithium-ion batteries(LIBs)and other battery *** techniques can successfully identify the formation of species during the electrolyte reduction,electrode degradation,and the formation of the solid-electrolyte interphase(SEI)*** these outcomes,it is possible to conclude that this characterization approach should be employed as a protocol to overcome remaining issues in batteries,consequently supporting battery *** review aims to be a guide on how infrared spectroscopy can contribute to monitoring battery systems and to lead researchers interested in applying this technique.

关键词： In situ spectroscopy Operando spectroscopy FTIR Spectro-electrochemical cells Batteries

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Recent progress on the prediction of two-dimensional materials using CALYPSO

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Chinese Physics B 2019年第10期28卷 62-72页

作者：唐程 gurpreet k.ur 杜爱军 School of Chemistry Physics and Mechanical Engineering Queensland University of Technology Gardens Point Campus

In recent years, structure design and predictions based on global optimization approach as implemented in CALYPSO software have gained great success in accelerating the discovery of novel two-dimensional(2D) materials. Here we highlight some most recent research progress on the prediction of novel 2D structures, involving elements, metal-free and metal-containing compounds using CALYPSO pack.ge. Particular emphasis will be given to those 2D materials that exhibit unique electronic and magnetic properties with great potentials for applications in novel electronics, optoelectronics,magnetronics, spintronics, and photovoltaics. Finally, we also comment on the challenges and perspectives for future discovery of multi-functional 2D materials.

关键词： CALYPSO methodology two-dimensional materials structural prediction

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Natural history and outcomes of patients with liver cirrhosis complicated by hepatic hydrothorax

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World Journal of Gastroenterology 2022年第35期28卷 5175-5187页

作者： Sarah Romero Andy k. Lim gurpreet Singh Chamani k.dik.ra Rachel Shingak.-Wells Lynna Chen Samuel Hui Marcus Robertson Department of Gastroenterology Monash HealthClayton 3168VictoriaAustralia Department of General Medicine School of Clinical SciencesMonash UniversityClayton 3168VictoriaAustralia Gastroenterology and Liver Transplant Unit Austin HealthHeidelberg 3084VictoriaAustralia

BACk.ROUNDHepatic hydrothorax (HH) is an uncommon and difficult-to-manage complicationof cirrhosis with limited treatment *** define the clinical outcomes of patients presenting with HH managed withcurrent standards-of-care and to identify factors associated with *** patients with HH presenting to 3 tertiary centres from 2010 to 2018 wereretrospectively identified. HH was defined as pleural effusion in the absence ofcardiopulmonary disease. The primary outcomes were overall and transplant-freesurvival at 12-mo after the index admission. Cox proportional hazards analysiswas used to determine factors associated with the primary ***, 84 patients were included (mean age, 58 years) with a mean model forend-stage liver disease score of 29. Management with diuretics alone achievedlong-term resolution of HH in only 12% patients. At least one thoracocentesis wasperformed in 73.8% patients, transjugular intrahepatic portosystemic shuntinsertion in 11.9% patients and 33% patients received liver transplantation within12-mo of index admission. Overall patient survival and transplant-free survival at12 mo were 68% and 41% respectively. At multivariable analysis, current smok.ng [hazard ratio (HR) = 8.65, 95% confidence interval (CI): 3.43-21.9, P k.dneyinjury (Ak.) (HR = 2.91, 95%CI: 1.21-6.97, P = 0.017) were associated with a significantly increasedrisk.of *** patients with HH are a challenging population with a poor 12-mo survival despitecurrent treatments. Current smok.ng and episodes of Ak. are potential modifiable factors affectingsurvival. HH is often refractory of diuretic therapy and transplant assessment should beconsidered in all cases.

关键词： Cirrhosis Portal hypertension Hepatic hydrothorax Ascites Liver transplantation