29 results on '"Rajinder, Singh"'
Search Results
2. Species discrimination from blood traces using ATR FT-IR spectroscopy and chemometrics: Application in wildlife forensics
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Chandra Prakash Sharma, Sweety Sharma, and Rajinder Singh
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Wildlife forensics ,Species differentiation ,Blood ,ATR-FTIR Spectroscopy ,Chemometrics ,PLS-DA ,Ecology ,QH540-549.5 ,Veterinary medicine ,SF600-1100 - Abstract
Efficient tools for the identification and discrimination of species are imperative in wildlife conservation since they can endow with information of species exploitation and also abet in solving problems related to forensic science. Herein, a non-destructive and rapid analytical method (ATR-FTIR Spectroscopy) coupled with PCA and PLS-DA was employed to analyze the dry blood samples for the species discrimination. Asian Elephant (Elephas maximus), Indian Leopard (Panthera pardus fusca), and Royal Bengal Tiger (Panthera tigris tigris) species were used to construct the chemometric models. Additionally, Domestic Pig (Sus scrofa domesticus) and Human (Homo sapiens) blood were taken for the external validation study. The evaluation results illustrate that the ATR FT-IR Spectroscopy in combination with PLS-DA model showed statistically confident discrimination among selected species from dry blood traces. ATR-FTIR spectroscopy supported with predictive models has been a robust, ideal, and suitable tool for species discrimination from dry blood traces recovered in wildlife investigations.
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- 2023
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3. Current applications of biomolecules in artificial intelligence and machine learning
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Gade, Jaya V., primary, Dixit, Ashutosh, additional, Sodhi, Rajinder Singh, additional, and Rawat, Reena, additional
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- 2023
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4. Morphological evaluation and sentiment analysis of Punjabi text using deep learning classification
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Jaspreet Singh, Gurvinder Singh, Rajinder Singh, and Prithvipal Singh
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Electronic computers. Computer science ,QA75.5-76.95 - Abstract
Morphological processing of Indian languages is one of the most escalating fields in the era of Natural Language Processing (NLP) since the last decade. The evaluation of Asian languages is a highly relevant field in the times of text mining and information retrieval. The morphological evaluation of a text can be employed for extraction and classification of knowledge. This paper amalgamates morphological evaluation and sentiment prediction of Punjabi language text. The textual data for Punjabi language is concerned with farmer suicide cases reported for Punjab state of India. The pre-processing phase of this study involves morphological evaluation and normalization of Punjabi words to their respective canonical forms. The next phase carries out training and testing of deep neural network model on refined Punjabi tokens obtained from the earlier phase. The proposed model classifies Punjabi tokens into four negatively oriented classes tailored for farmer suicide cases. The average accuracies of sentiment prediction obtained after 10-fold cross validation are 93.85%, 88.53%, 83.3%, and 95.45% for the four respective classes. The proposed framework yields satisfactory results on 275 Punjabi text documents with the overall accuracy of 90.29% for sentiment classification.
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- 2021
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5. Comparison of Toxicity and Cosmetic Outcomes After Accelerated Partial Breast Irradiation or Whole Breast Irradiation Using 3-Dimensional Conformal External Beam Radiation Therapy
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Budhi Singh Yadav, MD, Sofia Loganathan, MD, Suresh C. Sharma, MD, Rajinder Singh, MS, and Divya Dahiya, MS
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Medical physics. Medical radiology. Nuclear medicine ,R895-920 ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Purpose: To compare rates of acute and late skin toxicities and cosmetic outcomes after accelerated partial breast irradiation (APBI) or whole breast irradiation (WBI) using 3-dimensional conformal external beam radiation therapy in women with breast cancer after breast conservation surgery (BCS). Methods and Materials: Women >35 years of age with invasive or noninvasive breast cancer ≤4 cm treated by BCS were randomized to 3D-CRT APBI (34 Gy/10 fractions/5 days) or WBI (40 Gy/16 fractions/3 weeks ± boost irradiation). The primary outcome was ipsilateral breast tumor recurrence. Important secondary outcomes were skin toxicities using Radiation Therapy Oncology Group scores, Late Effects Normal Tissue Task Force and Subjective, Objective, Management, Analytic scales, and adverse cosmetic outcome. This interim analysis focuses on the secondary endpoints of radiation toxicities and cosmesis. Patient and tumor characteristics and rates of adverse cosmetic outcomes and skin toxicities were compared using Fisher exact tests. All statistical tests were 2 sided, with P < .05 considered statistically significant. Results: Between June 2011 and December 2015, 133 women with breast cancer were randomized to 3D-CRT APBI or WBI. Patient and tumor characteristics were balanced between the 2 arms. Median follow-up was 60 months (range, 12-93 months). Grade 4 late toxicity was not seen in either of the treatment arms, and grade 3 toxicity was very low for each endpoint assessed in both the groups. The rates of grade ≥2 acute dermatitis were 8% and 15%, respectively, for APBI and WBI (P = .18). Rates of grade ≥1 late radiation toxicities were higher in the WBI arm compared with the APBI arm for breast shrinkage (P = .008), pigmentation (P = .028), fibrosis (P = .040), induration (P = .048), and edema (P = .33). Adverse cosmesis at last follow-up was significantly higher in patients treated with WBI: 33% compared with 6% with APBI (P < .001). Conclusions: In women with breast cancer after BCS, APBI was associated with better cosmetic outcome and fewer late radiation toxicities than WBI.
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- 2020
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6. Assessment of antigenic specificity of polyclonal antisera raised against Avibacterium paragallinarum by ELISA
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Ajaz Ahmed, Sidhartha Deshmukh, Harmanjit Singh Banga, Sandeep Sodhi, and Rajinder Singh Brar
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Polyclonal antibody ,Avibacterium paragallinarum ,ELISA ,Rabbit ,Veterinary medicine ,SF600-1100 - Abstract
Lack of availability of commercial antibodies against whole-cell antigen or an antigenic epitope of Avibacterium paragallinarum (Av. paragallinarum) has hindered the development of novel immunoassays for the diagnose infectious coryza (IC). In this study, we raised polyclonal antisera against Av. paragallinarum and evaluated its antigenic-specificity using enzyme linked immunosorbent assay (ELISA). We standardized antigen coating concentration(s), antibody detection limit, and optimal range of dilutions of primary antisera and secondary conjugated antibody. Our results show the development of antigen-specific antibody response in rabbits following repeated antigenic exposure with 0.5% formalinized antigen over a period of four weeks. Further, we showed its possible applicability in detection of pathogens in tissues by immunohistochemistry for confirmatory disease diagnosis and disease pathogenetic study.
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- 2020
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7. Design and analysis of stochastic DSS query optimizers in a distributed database system
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Manik Sharma, Gurvinder Singh, and Rajinder Singh
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Query optimization ,Total Costs ,DSS ,Stochastic approach, entropy ,Genetic Algorithms ,Electronic computers. Computer science ,QA75.5-76.95 - Abstract
Query optimization is a stimulating task of any database system. A number of heuristics have been applied in recent times, which proposed new algorithms for substantially improving the performance of a query. The hunt for a better solution still continues. The imperishable developments in the field of Decision Support System (DSS) databases are presenting data at an exceptional rate. The massive volume of DSS data is consequential only when it is able to access and analyze by distinctive researchers. Here, an innovative stochastic framework of DSS query optimizer is proposed to further optimize the design of existing query optimization genetic approaches. The results of Entropy Based Restricted Stochastic Query Optimizer (ERSQO) are compared with the results of Exhaustive Enumeration Query Optimizer (EAQO), Simple Genetic Query Optimizer (SGQO), Novel Genetic Query Optimizer (NGQO) and Restricted Stochastic Query Optimizer (RSQO). In terms of Total Costs, EAQO outperforms SGQO, NGQO, RSQO and ERSQO. However, stochastic approaches dominate in terms of runtime. The Total Costs produced by ERSQO is better than SGQO, NGQO and RGQO by 12%, 8% and 5% respectively. Moreover, the effect of replicating data on the Total Costs of DSS query is also examined. In addition, the statistical analysis revealed a 2-tailed significant correlation between the number of join operations and the Total Costs of distributed DSS query. Finally, in regard to the consistency of stochastic query optimizers, the results of SGQO, NGQO, RSQO and ERSQO are 96.2%, 97.2%, 97.45 and 97.8% consistent respectively.
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- 2016
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8. Contributors
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Khamdam Akbarov, Vera Alejandra Alvarez, Ashish Kumar Asatkar, Humira Assad, K.K. Athira, Ranjan Kumar Basak, Elyor Berdimurodov, Abinash Chand Bharati, Amarpreet K. Bhatia, Evneet Kaur Bhatia, Plaban Bora, Kavindra Borgaonkar, G Bupesh, Nagendra Kumar Chandrawanshi, Parmesh Kumar Chaudhari, Ravishankar Chauhan, Feiyun Cui, Omar Dagdag, Pranjal Pratim Das, Ali Dehghani, Shippi Dewangan, Yeestdev Dewangan, Shubha Diwan, Ashutosh Dixit, Homa Faghihi, Micaela Ferrante, Jaya V. Gade, Ramesh L. Gardas, Rosa M. Giráldez-Pérez, Jimena Soledad Gonzalez, Elia Grueso, Lei Guo, Rajesh Haldhar, Bhawana Jain, Imnawapang Jamir, K.J. Jisha, Pannaga P. Jutur, Debajit Kalita, Mukul S. Kareya, Jasdeep Kaur, Savas Kaya, Shafat Ahmad Khan, Abduvali Kholikov, Seong-Cheol Kim, Ajay Kumar, Ashish Kumar, Alka Kumari, Garima Madhariya, Mohammad Mahdavian, Mithlesh Mahilang, Pramod Kumar Mahish, Sadhucharan Mallick, Kumar Manoj, Devendra Singh Masram, K Meenakshi Sundaram, Zohreh Mohammadi, null Nafisa, Venkateswara R. Naira, Asha A. Nesamma, Ashutosh Pandey, Pranay Punj Pankaj, Ashvika Pathania, Mayur Mausoom Phukan, Rafael Prado-Gotor, Bhavabhuti Prasad, Lalit Prasad, V.P. Priyanka, Bin Qu, Bahram Ramezanzadeh, Ali Rastegari, Reena Rawat, Mohamed Rbaa, Mahendra Sahu, Reema Sahu, Samson Rosly Sangma, Avijit Sarkar, T. Satish, Akhil Saxena, Gyanendra Kumar Saxena, Saurabh Sharma, Amit Kumar Shiv, Ajaya Kumar Singh, Anshul Singh, Santosh Bahadur Singh, Shivjeet Singh, Rajinder Singh Sodhi, Praveen Kumar Tandon, Abhinay Thakur, Mamta Tripathi, Sayanasri Varala, Dakeshwar Kumar Verma, Mohd Yusuf, Chijia Zeng, H. Susan Zhou, Qin Zhou, and Yang Zhou
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- 2023
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9. Antibacterial and antioxidant activities of Mentha piperita L.
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Rajinder Singh, Muftah A.M. Shushni, and Asma Belkheir
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Antibacterial ,Antioxidant ,Mentha piperita L ,Peppermint oil ,MICs ,Chemistry ,QD1-999 - Abstract
The antibacterial activity of peppermint oil and different extracts of Mentha piperita against some Gram-positive and Gram-negative bacterial strains was evaluated in the present research work by agar well diffusion method. It was found that the distilled concentrations of essential oil inhibited the growth of microorganisms and the results were comparable with those of antibiotic gentamycin. Essential oils showed a wider spectrum of activity but less strong inhibition as compared to the investigated commercial antibiotic. Minimum inhibitory concentrations (MICs) for the bacterial species ranged from 0.4% to 0.7% v/v. The oil and extracts also exhibited significant antioxidant activity and the oil showed about half potency when compared to the standard BHT. These results indicated the strong antibacterial and antioxidant activities of peppermint oil but additional investigations need to be performed in order to confirm the safety of these concentrations (MIC) for human consumption. Peppermint oil could be used as a good conservation agent by inhibiting some food borne pathogens.
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- 2015
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10. Snapshot imprinting: Rapid identification of cancer cell surface proteins and epitopes using molecularly imprinted polymers
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Alan C. Spivey, Salvador Macip, Eric O. Aboagye, Stanislav S. Piletsky, Rajinder Singh, Donald J. L. Jones, Marta Braga, Elena V. Piletska, Sergey A. Piletsky, Thong Huy Cao, Marta Poblocka, Imperial College Healthcare NHS Trust- BRC Funding, and Medical Research Council
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Proteomics ,Technology ,Chemistry, Multidisciplinary ,Cells ,EGFR ,Materials Science ,Biomedical Engineering ,Pharmaceutical Science ,Bioengineering ,Materials Science, Multidisciplinary ,Computational biology ,Epitope ,Epitopes ,0903 Biomedical Engineering ,NANOPARTICLES ,General Materials Science ,HEAD ,Imprinting (psychology) ,Nanoscience & Nanotechnology ,Cancer ,Science & Technology ,1007 Nanotechnology ,Cluster of differentiation ,Chemistry ,Molecularly imprinted polymer ,Molecular diagnostics ,Transmembrane protein ,Drug development ,Molecularly imprinted polymers ,Physical Sciences ,Science & Technology - Other Topics ,SECRETION ,Molecular imprinting ,STEM-CELLS ,Biotechnology - Abstract
Proteomic mapping of cell surfaces is an invaluable tool for drug development and clinical diagnostics. This work describes a new ‘snapshot imprinting’ method designed to obtain proteomic maps of cell surfaces, with the aim of identifying cell surface markers and epitopes for diagnostic and therapeutic applications. The analysis of two cancer cell lines, HN5 and MDA-MB-468, is described herein as a proof of concept, along with the selective targeting of three identified epitopes of epidermal growth factor receptor using molecularly imprinted polymer nanoparticles. 438 proteins were identified using this technique, with 283 considered to be transmembrane or extracellular proteins. The major advantage of the molecular imprinting approach developed here is the ability to analyse cell surface proteins without tedious fractionation, affinity separation or labelling. We believe that this system of protein analysis may provide a basic molecular diagnostics toolbox for precise, personalised treatment of cancer and other diseases.
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- 2021
11. Carcinogen-DNA Adducts
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Volker M. Arlt, Rajinder Singh, and Annette M. Krais
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chemistry.chemical_compound ,Adductomics ,Biochemistry ,Benzo(a)pyrene ,chemistry ,DNA adduct ,medicine ,Carcinogenesis ,medicine.disease_cause ,Gene ,DNA ,Carcinogen ,Adduct - Abstract
Carcinogen-DNA adducts result from the covalent interaction of electrophilic chemical carcinogens with nucleophilic sites in DNA. Some highly reactive genotoxic carcinogens are capable of directly binding to DNA but most carcinogens require metabolic activation. DNA adducts, if not repaired, can lead to mutations, and mutations in critical genes are a characteristic feature of tumors. Thus DNA adduct formation is considered a critical step in the initiation of carcinogenesis. DNA adducts formed in human tissues can be detected by a variety of sensitive techniques including 32P-postlabeling, mass spectrometry, accelerator mass spectrometry, and immunoassays. Their detection and characterization in human tissues can provide clues on the etiology of human cancer.
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- 2018
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12. Study of Skeletal Muscle Mitochondrial Dysfunction
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Birch-Machin, Mark, primary, Jackson, Sandra, additional, Kler, Rajinder Singh, additional, and Turnbull, Douglass M., additional
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- 1993
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13. Genetic Resources of Buckwheat in India
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Mohar Singh, Rakesh Kumar Chahota, Rajinder Singh Chauhan, TR Sharma, Sunil Archak, RK Yadav, and J. C. Rana
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Comparative genomics ,Germplasm ,Genetic diversity ,Fagopyrum tataricum ,biology ,food and beverages ,Phenotypic trait ,biology.organism_classification ,Rutin ,chemistry.chemical_compound ,chemistry ,Genetic marker ,Botany ,Fagopyrum - Abstract
Diverse agroclimatic niches in the Indian Himalayan region support a wide range of genetic diversity in buckwheat species. Buckwheat has multiple uses as grain and green leafy vegetable and is known to be rich in many major and minor nutrients. About 23 species occur in the highlands of the Euro-Asia region, and two of them, namely, Fagopyrum esculentum and Fagopyrum Tataricum, are cultivated while others occur wild or as weeds. The germplasm comprising 1055 germplasm accessions has been conserved ex situ at the National Bureau of Plant Genetic Resources. The entire collection has been evaluated for various traits and several trait-specific reference sets have been developed for enhanced use in breeding programs for the understanding of molecular dynamics of various genes involved in the biosynthesis of flavnoids such as rutin. cDNA-amplified fragment length polymorphism technology was successfully utilized to capture genes that are contributing to differences in rutin content in seed maturing stages. Gene-specific sequence tagged site markers and their possible association with phenotypic traits in buckwheat has also been established. Tartary buckwheat contains approximately 40 times more rutin than common buckwheat, therefore it is more important for industrial considerations. Buckwheat has a poor repertoire of genetic markers that could be employed for its genetic improvement, despite its industrial importance. Comparative genomics of rutin biosynthesis genes is being investigated by utilizing sequences from other plant species where these genes have been characterized. Lack of advanced processing technology has limited value-adding opportunities for meeting market demand, thus efforts should be focused on developing value-adding opportunities for farmers and enterprises to develop more diversified products.
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- 2016
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14. Contributors
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Imran Ahmed, Donna L. Arand, Elda Arrigoni, Hrayr Attarian, Laura K. Barger, Teri J. Barkoukis, Kendra Becker, Kathleen L. Benson, Matt T. Bianchi, Michel M. Billiard, Sabin R. Bista, Jeffrey Blumer, Michael H. Bonnet, George Brainard, Brenda Byrne, Rosalind D. Cartwright, Sudhansu Chokroverty, Daniel A. Cohen, Nancy A. Collop, Leopoldo P. Correa, Bernadette M. Cortese, Valerie McLaughlin Crabtree, Norma G. Cuellar, Jamie A. Cvengros, Nicholas A. DeMartinis, Jennifer L. DeWolfe, Christina Diederichs, Paul Dieffenbach, Ehren R. Dodson, Karl Doghramji, Charmane I. Eastman, Colin A. Espie, Richard Ferber, Michael Friedman, Suzanne Ftouni, Patrick M. Fuller, Hlynur Georgsson, Nalaka S. Gooneratne, Madeleine M. Grigg-Damberger, Constance Guille, Alex D. Hakim, Philip A. Hanna, Susan M. Harding, David G. Harper, Peter J. Hauri, Max Hirshkowitz, Michael J. Howell, Thomas D. Hurwitz, Anna Ivanenko, Kyle P. Johnson, Adrienne Juarascio, Naveen Kanathur, Eliot S. Katz, Abigail L. Kay, Suresh Kotagal, James M. Krueger, Andrew D. Krystal, Brett R. Kuhn, Simon D. Kyle, Gert Jan Lammers, Teofilo L. Lee-Chiong, Christopher W. Leesman, Michael R. Littner, Steven W. Lockley, Liudmila Lysenko, Mark W. Mahowald, Beth Ann Malow, Jennifer L. Martin, Jean K. Matheson, Noshir R. Mehta, Murray A. Mittleman, Babak Mokhlesi, Harvey Moldofsky, Brian J. Murray, David N. Neubauer, Seiji Nishino, Sushmita Pamidi, Rafael Pelayo, Barbara A. Phillips, Grace W. Pien, Charles Poon, Tanya Pulver, Stuart F. Quan, Shantha M.W. Rajaratnam, Winfried J. Randerath, Victoria L. Revell, Brandy M. Roane, Timothy A. Roehrs, Carol L. Rosen, Gerald Rosen, Thomas Roth, David B. Rye, Noriaki Sakai, Carlos H. Schenck, Paula K. Schweitzer, Steven J. Scrivani, Ronald Serota, Rajinder Singh, Tracey L. Sletten, Krystal R. Stober, Shannon S. Sullivan, Michael O. Summers, Elizabeth R. Super, Celeste Thirlwell, Michael J. Thorpy, Lynn Marie Trotti, Makoto Uchiyama, Thomas W. Uhde, Richard L. Verrier, Alvin G. Wee, Stephen P. Weinstein, Andrew Winokur, James K. Wyatt, H. Klar Yaggi, and Mark R. Zielinski
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- 2012
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15. Oil Palm Genomics
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Eng Ti Leslie Low, Meilina Ong Abdullah, Maizura Ithnin, Rajinder Singh, and Maria Madon
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Germplasm ,Resource (biology) ,biology ,business.industry ,food and beverages ,Genomics ,Plant genomes ,biology.organism_classification ,Biotechnology ,body regions ,Elaeis ,Palm oil ,business ,Palm ,Plant genomics - Abstract
Publisher Summary Plant genomics is reversing the previous paradigm of identifying genes behind biological functions and instead focuses on finding biological functions behind genes. The oil palm belongs to the genus Elaeis, which contains two species, E. Guineensis and E. oleifera. It is regarded as the most efficient oil-bearing crop in the world compared to other crops of the same genre in terms of land use. However, the oil yield of oil palm has reached stagnation of late and there is an urgent need for improvement. Hence, this chapter discusses the current trend of leveraging genomics in the production of new and improved planting materials. The genomic platforms form the resource toward achieving the target of producing superior oil palms. As with other plant genomes, the oil palm has now been sequenced and with the plummeting price of sequencing as time goes by, more genomes will follow suit. Malaysian Palm Oil Board (MPOB) is known to have the largest oil palm germplasm collection in the world. That is an ideal source for identifying new alleles essential for breeding.
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- 2012
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16. Low 8-oxo-7,8-dihydro-2'-deoxyguanosine levels and influence of genetic background in an Andean population exposed to high levels of arsenic
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Peter B. Farmer, Karin Engström, Karin Broberg, Marie Vahter, Rajinder Singh, Ulf Strömberg, Gabriela Concha, Friederike Teichert, Christian H. Lindh, and Barbro Nermell
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Adult ,DNA (Cytosine-5-)-Methyltransferase 1 ,medicine.medical_specialty ,Thioredoxin Reductase 1 ,Adolescent ,Genotype ,Health, Toxicology and Mutagenesis ,Population ,Thioredoxin Reductase 2 ,Argentina ,Environmental Health and Occupational Health ,Urine ,Biology ,medicine.disease_cause ,Arsenic ,chemistry.chemical_compound ,Young Adult ,Internal medicine ,Arsenic Poisoning ,Genetics ,medicine ,DNA-(Apurinic or Apyrimidinic Site) Lyase ,Deoxyguanosine ,Humans ,DNA (Cytosine-5-)-Methyltransferases ,education ,Molecular Biology ,Glutaredoxins ,Aged ,chemistry.chemical_classification ,Reactive oxygen species ,education.field_of_study ,Creatinine ,Middle Aged ,APEX1 ,Oxidative Stress ,Endocrinology ,Genetics, Population ,Phenotype ,chemistry ,Biochemistry ,8-Hydroxy-2'-Deoxyguanosine ,Toxicity ,Female ,Reactive Oxygen Species ,Oxidative stress ,DNA Damage - Abstract
BACKGROUND: Arsenic (As) causes oxidative stress through generation of reactive oxygen species. 8-Oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodG), a sensitive marker of oxidative DNA damage, has been associated with As exposure in some studies, but not in others, possibly due to population-specific genetic factors. OBJECTIVES: To evaluate the association between As and 8-oxodG in urine in a population with a low urinary monomethylated As (%MMA) and high dimethylated As (%DMA), as well as the genetic impact on (a) 8-oxodG concentrations and (b) the association between As and 8-oxodG. MATERIALS AND METHODS: Women (N=108) in the Argentinean Andes were interviewed and urine was analyzed for arsenic metabolites (ICPMS) and 8-oxodG (LC-MS/MS). Twenty-seven polymorphisms in genes related to oxidative stress and one in As(+III)methyltransferase (AS3MT) were studied. RESULTS: Median concentration of 8-oxodG was 4.7nmol/L (adjusted for specific weight; range 1.6-13, corresponding to 1.7mug/g creatinine, range 0.57-4.8) and of total urinary As metabolites (U-As) 290mug/L (range 94-720; 380mug/g creatinine, range 140-1100). Concentrations of 8-oxodG were positively associated with %MMA (strongest association, p=0.013), and weakly associated with U-As (positively) and %DMA (negatively). These associations were strengthened when taking ethnicity into account, possibly reflecting genetic differences in As metabolism and genes regulating oxidative stress and DNA maintenance. A genetic influence on 8-oxodG concentrations was seen for polymorphisms in apurinic/apyrimidinic endonuclease 1 (APEX1), DNA-methyltransferases 1 and 3b (DNMT1, DNMT3B), thioredoxin reductase 1 (TXNRD1) and 2 (TXNRD2) and glutaredoxin (GLRX). CONCLUSION: Despite high As exposure, the concentrations of 8-oxodG in this population were low compared with other As-exposed populations studied. The strongest association was found for %MMA, stressing that some inconsistencies between As and 8-oxodG partly depend on population variations in As metabolism. We found evidence of genetic impact on 8-oxodG concentrations. (Less)
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- 2010
17. Chapter 24 Spleen Tyrosine Kinase (Syk) Biology, Inhibitors and Therapeutic Applications
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Rajinder Singh and Esteban Masuda
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biology ,breakpoint cluster region ,Fc receptor ,Syk ,hemic and immune systems ,chemical and pharmacologic phenomena ,Tryptase ,Immunoglobulin E ,chemistry.chemical_compound ,chemistry ,Immunology ,Cancer research ,biology.protein ,Antibody ,Receptor ,Histamine - Abstract
Publisher Summary This chapter discusses the biology of spleen tyrosine kinase (Syk), its inhibitors and therapeutic applications. The most understood function of Syk kinase activity is in ITAM-dependent activation of immunoreceptors, including Fc receptor complexes (FcR) that bind the invariable Fc portion of the different immunoglobulin isotypes and the immunoglobulin B-cell-antigen receptor (BCR) complex. Allergic disorders are characterized by hypersensitive type I immune responses, mediated by immunoglobulin isotype E (IgE), to foreign antigens. Only a handful of pertinent Syk kinase inhibitors have been reported. One such example has been a family of pyrimidine-5-carboxamides. R112 is the first small molecule inhibitor of Syk kinase that has advanced to Phase 2 clinical trials. Compound R112 inhibited Syk kinase with Ki = 0.096 mM, selectively inhibited tryptase release from human mast cells induced by anti-IgE cross-linking, histamine from basophils, and dust mite allergen induced histamine release from human basophils with EC50S = 0.353, 0.28 and 0.49 mM, respectively. One advantage of compound 8 was its rapid onset of action since rapidly effective treatment is highly desirable during an allergic attack.
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- 2007
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18. REGULATION OF PROTEIN SYNTHESIS IN RABBIT RETICULOCYTE LYSATES BY DOUBLE STRANDED RNA (dsRNA) ACTIVATED PROTEIN KINASE THAT PHOSPHORYLATES INITIATION FACTOR eIF-2
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Ranu, Rajinder Singh, primary
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- 1981
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19. [43] Regulation of protein synthesis in rabbit reticulocyte lysates: Preparation of efficient protein synthesis lysates and the purification and characterization of the Heme-regulated translational inhibitory protein kinase
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Ranu, Rajinder Singh, primary and London, Irving M., additional
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- 1979
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20. [44] Purification of the heme-reversible form of the translational inhibitory protein kinase
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Trachsel, Hans, primary, Ranu, Rajinder Singh, additional, and London, Irving M., additional
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- 1979
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21. Simulation of Nitrate Leaching from Arable Soils Treated with Manure
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JANSSON, PER-ERIK, primary, ANTIL, RAJINDER SINGH, additional, and BORG, GUNNAR CH., additional
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- 1989
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22. [44] Purification of the heme-reversible form of the translational inhibitory protein kinase
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Hans Trachsel, Rajinder Singh Ranu, and Irving M. London
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chemistry.chemical_compound ,chemistry ,Biochemistry ,P70S6 kinase ,Protein biosynthesis ,Substrate specificity ,Protein kinase A ,Inhibitory postsynaptic potential ,Heme ,Peptide Initiation Factors - Published
- 1979
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23. Simulation of Nitrate Leaching from Arable Soils Treated with Manure
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Gunnar Ch. Borg, Rajinder Singh Antil, and Per-Erik Jansson
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Agronomy ,Soil water ,Environmental science ,Nitrate leaching ,Arable land ,Manure - Published
- 1989
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24. REGULATION OF EUKARYOTIC PROTEIN CHAIN INITIATION BY PROTEIN KINASES AND HEME
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Rajinder Singh Ranu, Vivian Ernst, Daniel H. Levin, Irving M. London, and Hans Trachsel
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chemistry.chemical_compound ,chemistry ,Biochemistry ,Kinase ,Polysome ,Translational regulation ,Protein biosynthesis ,Initiation factor ,Globin ,Biology ,Heme ,Hemin - Abstract
Publisher Summary This chapter describes the regulation of eukaryotic protein chain initiation by protein kinases and heme. Reticulocyte lysates provide a model system for studies on the regulation of protein synthesis owing to several unique properties. They include an efficient rate of initiation, the extensive synthesis of one major protein species, and the complete dependence of protein synthesis on exogenous hemin. In the presence of optimal concentrations of added hemin, protein synthesis proceeds at linear rates for prolonged periods. During the period of linear synthesis, the polyribosomes are maintained, and initiation factors are utilized catalytically. In efficient lysates, the rate of globin synthesis is comparable to the in vivo rate. In the absence of added hemin, protein synthesis proceeds at the control rate for several minutes, and then declines abruptly yielding characteristic biphasic kinetics of inhibition. The studies have established that the inhibition is mediated through a translational inhibitor which is rapidly activated in the absence of heme.
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- 1978
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25. Clozapine and incidence of myocarditis and sudden death - Long term Australian experience.
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Khan AA, Ashraf A, Baker D, Al-Omary MS, Savage L, Ekmejian A, Singh RSH, Brienesse S, Majeed T, Gordon T, Drinkwater V, and Collins NJ
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- Adult, Aged, Australia epidemiology, Cohort Studies, Electrocardiography drug effects, Electrocardiography trends, Female, Humans, Incidence, Male, Middle Aged, Myocarditis diagnosis, Prospective Studies, Time Factors, Antipsychotic Agents adverse effects, Clozapine adverse effects, Death, Sudden, Cardiac epidemiology, Myocarditis chemically induced, Myocarditis epidemiology
- Abstract
Background: Clozapine is the cornerstone of therapy for refractory schizophrenia; however, the potential for cardiotoxicity is an important limitation in its use. In the current analysis we sought to evaluate the long term cardiac outcomes of clozapine therapy., Methods: All-cause mortality, incidence of sudden death and time to myocarditis were assessed in a cohort of patients maintained on clozapine between January 2009 and December 2015. All patients had regular electrocardiograms, complete blood count, clozapine levels and echocardiography as part of a formal protocol., Results: A total of 503 patients with treatment-resistant schizophrenia were maintained on clozapine during the study period of which 93 patients (18%) discontinued therapy with 29 (6%) deaths. The incidence of sudden death and myocarditis were 2% (n=10) and 3% (n=14) respectively. Amongst patients with sudden death, 7 out of 10 (70%) were documented to have used illicit drugs prior to death, with a tendency to weight gain also noted. The mean time to myocarditis post clozapine commencement was 15±7days. The reduction in left ventricular ejection fraction in those with myocarditis was 11±2%., Conclusion: Myocarditis and sudden cardiac death are uncommon but clinically important complications in a cohort of patients followed while maintained on clozapine undergoing regular cardiac assessment. Further studies are required to document the role of preventive measures for left ventricular dysfunction and sudden cardiac death in this population., (Copyright © 2017. Published by Elsevier B.V.)
- Published
- 2017
- Full Text
- View/download PDF
26. Multiple genes of mevalonate and non-mevalonate pathways contribute to high aconites content in an endangered medicinal herb, Aconitum heterophyllum Wall.
- Author
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Malhotra N, Kumar V, Sood H, Singh TR, and Chauhan RS
- Subjects
- Alkaloids analysis, Alkaloids chemistry, Alkaloids metabolism, India, Molecular Structure, Plant Leaves metabolism, Plant Roots metabolism, Plant Stems metabolism, Polymerase Chain Reaction, Aconitum chemistry, Aconitum genetics, Aconitum physiology, Mevalonic Acid metabolism, Plants, Medicinal chemistry, Plants, Medicinal genetics, Plants, Medicinal metabolism
- Abstract
Aconitum heterophyllum Wall, popularly known as Atis or Patis, is an important medicinal herb of North-Western and Eastern Himalayas. No information exists on molecular aspects of aconites biosynthesis, including atisine- the major chemical constituent of A. heterophyllum. Atisine content ranged from 0.14% to 0.37% and total alkaloids (aconites) from 0.20% to 2.49% among 14 accessions of A. heterophyllum. Two accessions contained the highest atisine content with 0.30% and 0.37% as well as the highest alkaloids content with 2.22% and 2.49%, respectively. No atisine was detected in leaves and shoots of A. heterophyllum, thereby, suggesting that the biosynthesis and accumulation of aconite alkaloids occur mainly in roots. Quantitative expression analysis of 15 genes of MVA/MEP pathways in roots versus shoots, differing for atisine content (0-2.2 folds) showed 11-100 folds increase in transcript amounts of 4 genes of MVA pathway; HMGS, HMGR, PMK, IPPI, and 4 genes of MEP pathway; DXPS, ISPD, HDS, GDPS, respectively. The overall expression of 8 genes decreased to 5-12 folds after comparative expression analysis between roots of high (0.37%) versus low (0.14%) atisine content accessions, but their relative transcript amounts remained higher in high content accessions, thereby implying their role in atisine biosynthesis and accumulation. PCA analysis revealed a positive correlation between MVA/MEP pathways genes and alkaloids content. The current study provides first report wherein partial sequences of 15 genes of MVA/MEP pathways have been cloned and studied for their possible role in aconites biosynthesis. The outcome of study has potential applications in the genetic improvement of A. heterophyllum., (Copyright © 2014 Elsevier Ltd. All rights reserved.)
- Published
- 2014
- Full Text
- View/download PDF
27. Spontaneous resolution of superior medial geniculate artery pseudoaneurysm following total knee arthroplasty.
- Author
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Gaheer RS, Chirputkar K, and Sarungi M
- Subjects
- Aged, Aneurysm, False diagnostic imaging, Angiography, Humans, Male, Tomography, X-Ray Computed, Ultrasonography, Aneurysm, False etiology, Arthroplasty, Replacement, Knee adverse effects, Knee Joint blood supply, Remission, Spontaneous
- Abstract
Vascular injury after total knee arthroplasty is a rare event with significant morbidity. To date there are a handful of cases of pseudoaneurysms affecting the popliteal artery and cases involving one of the geniculate arteries are even rarer. Most case reports involving injuries to the geniculate vessels have reported surgical intervention to treat the condition. We report a case where injury to the superior medial geniculate artery with formation of pseudoaneurysm resolved without any surgical intervention., (Copyright © 2012 Elsevier B.V. All rights reserved.)
- Published
- 2014
- Full Text
- View/download PDF
28. DOTS in HIV positive patients.
- Author
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Bedi RS
- Subjects
- Anecdotes as Topic, Antitubercular Agents therapeutic use, Clinical Protocols, Congresses as Topic, Humans, India, Treatment Failure, Tuberculosis, Lymph Node pathology, Directly Observed Therapy, HIV Infections complications, HIV Infections drug therapy, Tuberculosis, Lymph Node complications, Tuberculosis, Lymph Node drug therapy
- Published
- 2008
29. Management of superior vena cava syndrome by internal jugular to femoral vein bypass.
- Author
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Dhaliwal RS, Das D, Luthra S, Singh J, Mehta S, and Singh H
- Subjects
- Adult, Fibrosis, Follow-Up Studies, Humans, Jugular Veins pathology, Male, Palliative Care, Polytetrafluoroethylene, Prostheses and Implants, Radiation Injuries etiology, Radiotherapy adverse effects, Subclavian Artery pathology, Thymoma radiotherapy, Thymus Neoplasms radiotherapy, Blood Vessel Prosthesis Implantation, Femoral Vein surgery, Jugular Veins surgery, Radiation Injuries surgery, Superior Vena Cava Syndrome surgery
- Abstract
We report a 30-year-old man with superior vena cava syndrome due to fibrosis from a previously irradiated malignant thymoma. The patient presented 4 years after the initial treatment, after having been lost to follow-up. Investigations revealed total obstruction of the superior vena cava, and right subclavian and right internal jugular vein. The patient underwent an extra-anatomic bypass (ringed polytetrafluoroethylene graft 10-mm diameter) between the left internal jugular vein and the left femoral vein brought in a subcutaneous tunnel over the anterior chest and abdominal wall. Entry to the thoracic cavity was avoided due to extensive fibrotic changes visualized in the computed tomographic chest scan. Follow-up Doppler at 2 months, 6 months, 1 year, and 3 years showed a patent graft. An internal jugular vein to the femoral vein bypass is a simple method for palliation of superior vena cava syndrome.
- Published
- 2006
- Full Text
- View/download PDF
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