29 results on '"Bhandari MS"'
Search Results
2. A Question of Access: Exploring the Perceived Benefits and Barriers of Intelligent Voice Assistants for Improving Access to Consumer Health Resources Among Low-Income Older Adults
- Author
-
Phani Nallam MS, Siddhant Bhandari MS, Jamie Sanders BS, and Aqueasha Martin-Hammond PhD
- Subjects
Geriatrics ,RC952-954.6 - Abstract
Intelligent voice assistants (IVAs) such as Amazon Echo and Google Home present a promising opportunity to improve access to consumer health information and resources for older adults. However, researchers know little about older adults’ opinions of using IVAs for these potentially critical tasks, particularly those with already limited access. In this paper, we explore older adults’ views about IVAs for consumer health and wellness information with the goal of better understanding what they envision as benefits and barriers of using such technology in the future. We shared an IVA prototype with ten older adults (60 years of age or older). We interviewed them about how a similar system might impact their access to consumer health information. Participants saw the potential for IVAs to improve their search experiences and support them with other health tasks. However, participants were also concerned about adopting an IVA for health due to access barriers, confidentiality risks, and concerns about receiving trusted information. Based on our findings, we discuss considerations for designing IVAs for underserved, older adult populations.
- Published
- 2020
- Full Text
- View/download PDF
3. (Part-4) DIGITAL FRONTIERS: A COMPREHENSIVE EXPLORATION OF IT AND FUNDAMENTAL SCIENCES
- Author
-
BHANDARI, Ms. SUNITA, primary
- Published
- 2022
- Full Text
- View/download PDF
4. Designing of Multi-cavity Extrusion Die to Increase Productivity: A survey and perspective
- Author
-
Bhandari, Ms. Karishma J., primary
- Published
- 2018
- Full Text
- View/download PDF
5. Association between renal cell carcinoma and plasma cell dyscrasias: a case series of six patients.
- Author
-
Bhandari MS, Mazumder A, Jagannath S, and Vesole DH
- Published
- 2008
6. Liver involvement in multiple myeloma.
- Author
-
Bhandari MS, Mazumder A, and Vesole DH
- Published
- 2007
7. THE RURAL CONTEXT TRADITIONAL BIRTH ATTENDANTS
- Author
-
DUTTA, A., primary, BHANDARI, MS. URMIL, additional, and BHANDARI, VINOD, additional
- Published
- 1983
- Full Text
- View/download PDF
8. Calonectria eucalyptorum sp. nov., a new leaf blight pathogen of Eucalyptus from India.
- Author
-
Negi N, Ramkrishna, Meena RK, Bhandari MS, and Pandey S
- Abstract
In this study, Calonectria eucalyptorum sp. nov. is described from the blighted leaves of Eucalyptus in India using morphological and multi-locus phylogenetic analyses. The new species belongs to the Calonectria cylindrospora species complex, and its unique microscopic features and DNA sequence information enable clear separation from the 12 currently accepted species in this complex. Conidia of the new taxon are slightly longer than those of its phylogenetic neighbors. Additionally, this species produces central as well as lateral stipe extensions, which is a feature not known for the other members of the C. cylindrospora species complex. Analyses of the combined partial calmodulin, histone, translation elongation factor-1α, and β-tubulin gene regions revealed a distinct phylogenetic position for C. eucalyptorum. Recombination analysis provided additional support for the new species hypothesis. Koch's postulates for the new taxon as a foliar pathogen of Eucalyptus were fulfilled. The discovery of novel and pathogenic Calonectria species is important because it sheds light on species diversity, potential threats, and disease control., (© 2024. The Author(s), under exclusive licence to Springer Nature Switzerland AG.)
- Published
- 2024
- Full Text
- View/download PDF
9. Discovery of Botryosphaeria eucalypti sp. nov. from blighted Eucalyptus leaves in India.
- Author
-
Negi N, Ramkrishna, Meena RK, Bhandari MS, and Pandey S
- Subjects
- India, Peptide Elongation Factor 1 genetics, Spores, Fungal genetics, DNA, Ribosomal Spacer genetics, Eucalyptus microbiology, Plant Diseases microbiology, Ascomycota genetics, Ascomycota isolation & purification, Ascomycota classification, Plant Leaves microbiology, Phylogeny, DNA, Fungal genetics, Tubulin genetics, Sequence Analysis, DNA
- Abstract
Eucalyptus spp. are undoubtedly one of the most favored plantation trees globally. Accurately identifying Eucalyptus pathogens is therefore crucial for timely disease prevention and control. Recently, symptoms of a leaf blight disease were observed on Eucalyptus trees in plantations at Jhajjar and Karnal in the state of Haryana, northern India. Asexual morphs resembling the features of the Botryosphaeriaceae were consistently isolated from the symptomatic leaves. Morphological features coupled with DNA sequence analysis confirmed a novel species, which is described and illustrated here as Botryosphaeria eucalypti sp. nov. Conidia of the new taxon are longer and wider than those of its phylogenetic neighbors. A distinct phylogenetic position for the new taxon was established through combined analysis of the internal transcribed spacer (ITS), partial translation elongation factor-1α (tef1) and partial β-tubulin (tub2) regions. Recombination analysis provided additional support for the new species hypothesis. The pathogenicity of the novel species was proved on Eucalyptus leaves, and Koch's postulates were fulfilled. The discovery of new Botryosphaeria species is important because it will help in understanding the species diversity, host range, possible threats and disease control in the long run., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Ltd. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
10. Exploring Steroidal Saponin Composition and Morphometric Characteristics of Rhizomes from Trillium govanianum Wall. ex D. Don: Inference for Medicinal Properties and Genetic Stock Improvement.
- Author
-
Singh Bisht S, Meena RK, Bhandari MS, Pal Singh P, Sharma U, Bisht A, and Verma PK
- Subjects
- Chromatography, High Pressure Liquid, Plants, Medicinal chemistry, Plants, Medicinal metabolism, Phytochemicals chemistry, Phytochemicals isolation & purification, Phytochemicals pharmacology, Tandem Mass Spectrometry, Humans, Trillium chemistry, Saponins chemistry, Saponins isolation & purification, Rhizome chemistry, Steroids chemistry
- Abstract
Trillium govanianum, a medicinal herb, exhibiting diverse morphometric traits and phytochemicals across developmental stages of plants. The changes in the chemical profile and steroidal saponin levels in the rhizome of T. govanianum across different developmental stages were previously unknown. This study categorizes rhizomes into three types based on scar presence: juvenile (5-10 scars, Type I), young (11-19 scars, Type II), and mature (21-29 scars, Type III). Rhizomes show varying sizes (length 1.2-4.7 cm, girth 0.3-1.6 cm), weight (0.18-5.0 g), and extractive yields (9.7-16.1 % w w
-1 ), with notable differences in saponin content (5.95-21.9 mg g-1 ). Ultra-high performance liquid chromatography-MS/MS (UHPLC-QTOF-MS/MS)-based chemical profiling identifies 31 phytochemicals, mainly including diverse saponins. Ultra-high performance liquid chromatography coupled with evaporative light scattering detection (UHPLC-ELSD)-based quantitative analysis of seven key saponins reveals stage-specific accumulation patterns, with protodioscin (P) and dioscin (DS) predominant in mature rhizomes. Statistical analysis confirms significant variation (p=0.001) in saponin levels across developmental stages with chemical constituent protodioscin (P=4.03±0.03-15.76±0.14 mg g-1 , PAve =9.79±3.03 mg g-1 ) and dioscin (DS=1.23±0.06-3.93±0.07 mg g-1 , DSAve =2.59±0.70 mg g-1 ), with acceptable power (p=0.738; |δ|>0.5) statistics for effective sample size (n=27 samples used in the study) of T. govanianum. Principal Component Analysis (PCA) and Euclidean clustering further highlighted chemotype distinctions., (© 2024 Wiley-VHCA AG, Zurich, Switzerland.)- Published
- 2024
- Full Text
- View/download PDF
11. Unveiling stress-adapted endophytic bacteria: Characterizing plant growth-promoting traits and assessing cross-inoculation effects on Populus deltoides under abiotic stress.
- Author
-
Jangra A, Kumar K, Maikhuri S, Bhandari MS, Pandey S, Singh H, and Barthwal S
- Subjects
- Endophytes physiology, Plant Leaves metabolism, Droughts, Proline metabolism, Adaptation, Physiological, Acinetobacter physiology, Populus microbiology, Populus physiology, Stress, Physiological
- Abstract
In the face of the formidable environmental challenges precipitated by the ongoing climate change, Plant Growth-Promoting Bacteria (PGPB) are gaining widespread acknowledgement for their potential as biofertilizers, biocontrol agents, and microbial inoculants. However, a knowledge gap pertains to the ability of PGPB to improve stress tolerance in forestry species via cross-inoculation. To address this gap, the current investigation centres on PGPBs, namely, Acinetobacter johnsonii, Cronobacter muytjensii, and Priestia endophytica, selected from the phyllosphere of robust and healthy plants thriving in the face of stress-inducing conditions. These strains were selected based on their demonstrated adaptability to saline, arid, and nitrogen-deficient environments. The utilization of PGPB treatment resulted in an improvement of stomatal conductance (gs) and transpiration rate (E) in poplar plants exposed to both salt and drought stress. It also induced an increase in essential biochemical components such as proline (PRO), catalase (CAT), peroxidase (POD), and superoxide dismutase (SOD). These reactions were accompanied by a decrease in leaf malonaldehyde (MDA) content and electrolyte leakage (EL). Furthermore, the PGPB treatment demonstrated a notable enhancement in nutrient absorption, particularly nitrogen and carbon, achieved through the solubilization of nutrients. The estimation of canopy temperature via thermal imaging proved to be an efficient method for distinguishing stress reactions in poplar than conventional temperature recording techniques. In summation, the utilization of PGPB especially Cronobacter muytjensii in this study, yielded profound improvements in the stress tolerance of poplar plants, manifesting in reduced membrane lipid peroxidation, enhanced photosynthesis, and bolstered antioxidant capacity within the leaves., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Masson SAS. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
12. An improved Shorea robusta genomic DNA extraction protocol with high PCR fidelity.
- Author
-
Mishra G, Meena RK, Kant R, Pandey S, Ginwal HS, and Bhandari MS
- Abstract
Shorea robusta (Dipterocarpaceae), commonly known as Sal, is an economically and culturally important timber species, known to contain a wide spectrum of polyphenols, polysaccharides, and other secondary metabolites in the tissues, which can interfere with the extraction of high-quality genomic DNA. In order to screen simple sequence repeat (SSR) markers and carry out other DNA-based analyses for this species in our laboratory, a high-throughput DNA extraction methodology was needed. Hence, we have optimized a simple, rapid, safe, and reliable high-throughput protocol for DNA extraction suitable for both fresh and dry leaves. The standardized protocol delivered good DNA yield of ∼1500 µg from 1 g of leaf tissue, with purity indicated by a 260 nm/280 nm absorbance ratio ranging from 1.70 to 1.91, which validated the suitability of extracted DNA and revealed reduced levels of contaminants. Additionally, the protocol that we developed was found to be suitable for polymerase chain reaction (PCR) amplification using microsatellite markers. Genome-wide characterization with SSR markers has been established in S. robusta , which further validates the protocol and its usefulness in DNA-based studies across the genus and/or family., Competing Interests: None declared., (© The Author(s) 2023. Published by Oxford University Press.)
- Published
- 2023
- Full Text
- View/download PDF
13. Engineering traits through CRISPR/cas genome editing in woody species to improve forest diversity and yield.
- Author
-
Thapliyal G, Bhandari MS, Vemanna RS, Pandey S, Meena RK, and Barthwal S
- Subjects
- Wood, CRISPR-Cas Systems genetics, Forests, Trees genetics, Genome, Plant genetics, Gene Editing, Ecosystem
- Abstract
Dangers confronting forest ecosystems are many and the strength of these biological systems is deteriorating, thus substantially affecting tree physiology, phenology, and growth. The establishment of genetically engineered trees into degraded woodlands, which would be adaptive to changing climate, could help in subsiding ecological threats and bring new prospects. This should not be resisted due to the apprehension of transgene dispersal in forests. Consequently, it is important to have a deep insight into the genetic structure and phenotypic limits of the reproductive capability of tree stands/population(s) to endure tolerance and survival. Importantly, for a better understanding of genes and their functional mechanisms, gene editing (GeEd) technology is an excellent molecular tool to unravel adaptation progressions. Therefore, GeEd could be harnessed for resolving the allelic interactions for the creation of gene diversity, and transgene dispersal may be alleviated among the population or species in different bioclimatic zones around the globe. This review highlights the potential of the CRISPR/Cas tools in genomic, transcriptomic, and epigenomic-based assorted and programmable alterations of genes in trees that might be able to fix the trait-specific gene function. Also, we have discussed the application of diverse forms of GeEd to genetically improve several traits, such as wood density, phytochemical constituents, biotic and abiotic stress tolerance, and photosynthetic efficiency in trees. We believe that the technology encourages fundamental research in the forestry sector besides addressing key aspects, which might fasten tree breeding and germplasm improvement programs worldwide.
- Published
- 2023
- Full Text
- View/download PDF
14. Ecological niche modelling and population genetic analysis of Indian temperate bamboo Drepanostachyum falcatum in the western Himalayas.
- Author
-
Meena RK, Negi N, Shankhwar R, Bhandari MS, Kant R, Pandey S, Kumar N, Sharma R, and Ginwal HS
- Subjects
- Geography, Microsatellite Repeats genetics, Genetics, Population, Poaceae, Ecosystem
- Abstract
The present study was conducted to understand the key ecological and biological questions of conservation importance in Drepanostachyum falcatum which aimed to map potential distribution in the western Himalayas and decipher spatial genetic structure. Eco-distribution maps were generated through ecological niche modelling using the Maximum Entropy (MaxEnt) algorithm implemented with 228 geocoordinates of species presence and 12 bioclimatic variables. Concomitantly, 26 natural populations in the western Himalayas were genetically analysed using ten genomic sequence-tagged microsatellite (STMS) markers. Model-derived distribution was adequately supported with appropriate statistical measures, such as area under the 'receiver operating characteristics (ROC)' curve (AUC; 0.917 ± 0.034)", Kappa (K; 0.418), normalized mutual information (NMI; 0.673) and true skill statistic (TSS; 0.715). Further, Jackknife test and response curves showed that the precipitation (pre- and post-monsoon) and temperature (average throughout the year and pre-monsoon) maximize the probabilistic distribution of D. falcatum. We recorded a wide and abundant (4096.86 km
2 ) distribution of D. falcatum in the western Himalayas with maximum occurrence at 1500 to 2500 m asl. Furthermore, marker analysis exemplified high gene diversity with low genetic differentiation in D. falcatum. Relatively, the populations of Uttarakhand are more genetically diverse than Himachal Pradesh, whereas within the Uttarakhand, the Garhwal region captured a higher allelic diversity than Kumaon. Clustering and structure analysis indicated two major gene pools, where genetic admixing appeared to be controlled by long-distance gene flow, horizontal geographical distance, aspect, and precipitation. Both the species distribution map and population genetic structure derived herein may serve as valuable resources for conservation and management of Himalayan hill bamboos., (© 2023. The Author(s) under exclusive licence to The Botanical Society of Japan.)- Published
- 2023
- Full Text
- View/download PDF
15. Genome survey sequencing-based SSR marker development and their validation in Dendrocalamus longispathus.
- Author
-
Meena RK, Kashyap P, Shamoon A, Dhyani P, Sharma H, Bhandari MS, Barthwal S, and Ginwal HS
- Subjects
- Genetic Markers, Chromosome Mapping, India, Microsatellite Repeats, Genome, Plant, Genomics, Polymorphism, Genetic
- Abstract
Bamboo is an important genetic resource in India, supporting rural livelihood and industries. Unfortunately, most Indian bamboo taxa are devoid of basic genomic or marker information required to comprehend the genetic processes for further conservation and management. In this study, we perform genome survey sequencing for development of de novo genomic SSRs in Dendrocalamus longispathus, a socioeconomically important bamboo species of northeast India. Using Illumina platform, 69.49 million raw reads were generated and assembled into 1,145,321 contig with GC content 43% and N50 1228 bp. In total, 46,984 microsatellite repeats were mined-out wherein di-nucleotide repeats were most abundant (54.71%) followed by mono- (31.91%) and tri-repeats (9.85%). Overall, AT-rich repeats were predominant in the genome, but GC-rich motifs were more frequent in tri-repeats. Afterwards, 21,596 SSR loci were successfully tagged with the primer pairs, and a subset of 50 were validated through polymerase chain reaction amplification. Of these, 36 SSR loci were successfully amplified, and 16 demonstrated polymorphism. Using 13 polymorphic SSRs, a moderate level of gene diversity (He = 0.480; Ar = 3.52) was recorded in the analysed populations of D. longispathus. Despite the high gene flow (Nm = 4.928) and low genetic differentiation (F
ST = 0.119), severe inbreeding (FIS = 0.407) was detected. Further, genetic clustering and STRUCTURE analysis revealed that the entire genetic variability is captured under two major gene pools. Conclusively, we present a comprehensive set of novel SSR markers in D. longispathus as well as other taxa of tropical woody bamboos., (© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)- Published
- 2023
- Full Text
- View/download PDF
16. Genome-wide characterization leading to simple sequence repeat (SSR) markers development in Shorea robusta.
- Author
-
Mishra G, Meena RK, Kant R, Pandey S, Ginwal HS, and Bhandari MS
- Subjects
- Microsatellite Repeats, Polymorphism, Genetic, Dipterocarpaceae genetics, Genome, Plant
- Abstract
Tropical rainforests in Southeast Asia are enriched by multifarious biota dominated by Dipterocarpaceae. In this family, Shorea robusta is an ecologically sensitive and economically important timber species whose genomic diversity and phylogeny remain understudied due to lack of datasets on genetic resources. Smattering availability of molecular markers impedes population genetic studies indicating a necessity to develop genomic databases and species-specific markers in S. robusta. Accordingly, the present study focused on fostering de novo low-depth genome sequencing, identification of reliable microsatellites markers, and their validation in various populations of S. robusta in Uttarakhand Himalayas. With 69.88 million raw reads assembled into 1,97,489 contigs (read mapped to 93.2%) and a genome size of 357.11 Mb (29 × coverage), Illumina paired-end sequencing technology arranged a library of sequence data of ~ 10 gigabases (Gb). From 57,702 microsatellite repeats, a total of 35,049 simple sequence repeat (SSR) primer pairs were developed. Afterward, among randomly selected 60 primer pairs, 50 showed successful amplification and 24 were found as polymorphic. Out of which, nine polymorphic loci were further used for genetic analysis in 16 genotypes each from three different geographical locations of Uttarakhand (India). Prominently, the average number of alleles per locus (Na), observed heterozygosity (Ho), expected heterozygosity (He), and the polymorphism information content (PIC) were recorded as 2.44, 0.324, 0.277 and 0.252, respectively. The accessibility of sequence information and novel SSR markers potentially enriches the current knowledge of the genomic background for S. robusta and to be utilized in various genetic studies in species under tribe Shoreae., (© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
- Published
- 2023
- Full Text
- View/download PDF
17. Self-medication in Primary Dysmenorrhea among Undergraduate Students in a Medical College: A Descriptive Cross-sectional Study.
- Author
-
Shrestha R, Bhandari MS, Shrestha SS, Shrestha JTM, and Shrestha U
- Subjects
- Adolescent, Female, Humans, Dysmenorrhea drug therapy, Dysmenorrhea epidemiology, Cross-Sectional Studies, Surveys and Questionnaires, Prevalence, Self Medication, Students, Medical
- Abstract
Introduction: Primary dysmenorrhea is painful menstruation in women with normal pelvic anatomy, usually beginning during adolescence, primarily associated with a normal ovulatory cycle. There is an increased likelihood of self-medication among medical students. The aim of this study is to find out the prevalence of self-medication in primary dysmenorrhea among undergraduate students in a medical college., Methods: A descriptive cross-sectional study was conducted in a medical college among undergraduate female students with primary dysmenorrhea from 1 February 2022 to 31 May 2022. Ethical approval was obtained from the Institutional Review Committee of the same institute (Reference number: 254/2021). Convenience sampling was done. Data were collected through a self-administered questionnaire. Point estimate and 95% Confidence Interval were calculated., Results: Among 213 students with primary dysmenorrhea, self-medication was found to be in 78 (36.62%) (30.15-43.09, 95% Confidence Interval)). Among all the self-medications used, mefenamic acid was most common, used by 45 (57.69%) students, followed by paracetamol 11 (14.10%)., Conclusions: The prevalence of self-medication practice in primary dysmenorrhea among undergraduate students was lower when compared to similar studies done in similar settings., Keywords: dysmenorrhea; menstruation; prevalence; self medication.
- Published
- 2022
- Full Text
- View/download PDF
18. Genome skimming-based simple sequence repeat (SSR) marker discovery and characterization in Grevillea robusta .
- Author
-
Dabral A, Shamoon A, Meena RK, Kant R, Pandey S, Ginwal HS, and Bhandari MS
- Abstract
Proteaceae, a largely southern hemisphere family consisting of 80 genera distributed in Australia and southern Africa as its centres of greatest diversity, also extends well in northern and southern America. Under this family, Grevillea robusta is a fast-growing species got popularity in farm and avenue plantations. Despite the ecological and economic importance, the species has not yet been investigated for its genetic improvement and genome-based studies. Only a few molecular markers are available for the species or its close relatives, which hinders genomic and population genetics studies. Genetic markers have been intensively applied for the main strategies in breeding programs, especially for the economically important traits. Hence, it is of utmost priority to develop genomic database resources and species-specific markers for studying quantitative genetics in G. robusta . Given this, the present study aimed to develop de novo genome sequencing, robust microsatellites markers, sequence annotation and their validation in different stands of G. robusta in northern India. Library preparation and sequencing were carried out using Illumina paired-end sequencing technology. Approximately, ten gigabases (Gb) sequence data with 70.87 million raw reads assembled into 425,923 contigs (read mapped to 76.48%) comprising 455 Mb genome size (23 × coverage) generated through genome skimming approach. In total, 9421 simple sequence repeat (SSR) primer pairs were successfully designed from 13,335 microsatellite repeats. Afterward, a subset of 161 primer pairs was randomly selected, synthesized and validated. All the tested primers showed successful amplification but only 13 showed polymorphisms. The polymorphic SSRs were further used to estimate the measures of genetic diversity in 12 genotypes each from the states of Punjab, Haryana, Himachal Pradesh and Uttarakhand. Importantly, the average number of alleles (N
a ), observed heterozygosity (Ho ), expected heterozygosity (He ), and the polymorphism information content (PIC) were recorded as 2.69, 0.356, 0.557 and 0.388, respectively. The availability of sequence information and newly developed SSR markers could potentially be used in various genetic analyses and improvements through molecular breeding strategies for G. robusta ., Supplementary Information: The online version contains supplementary material available at 10.1007/s12298-021-01035-w., (© Prof. H.S. Srivastava Foundation for Science and Society 2021.)- Published
- 2021
- Full Text
- View/download PDF
19. Global Forestry Perspective: COVID-19 Impact and Assessment.
- Author
-
Bhandari MS, Pandey S, Dabral A, Meena RK, and Kant R
- Abstract
Corona virus disease 2019 (COVID-19) caused by corona virus SARS-CoV-2 is believed to be originated in Wuhan province of China, which has spread all over the world. It has severely impacted the social, cultural, educational, research and development programmes throughout the globe. Since the inception of various lifeforms on planet earth, forests' plays an important role in the evolutionary history of organisms and fitness persuades the existence of modern-day species in different ecosystems. The visible effect of pandemic leads to the lockdown with positive implications on the earth biosphere as a whole; while on other hand, lockdown seized and reduced the urbanization and developmental projects, especially the research and development progress in the field of forestry and allied sciences. This viewpoint addresses key questions and point-out with detailed exploration of the problem - as how COVID-19 pandemic impacts forestry research all over the world? We also suggest possible solutions, and define the role and association of disciplines, such as bioinformatics, remote sensing and statistical modules along with previously explored and collected field data as a sustainable measure to resolve the problems of forestry sector of this mighty challenge., (© The National Academy of Sciences, India 2021.)
- Published
- 2021
- Full Text
- View/download PDF
20. Genome skimming-based STMS marker discovery and its validation in temperate hill bamboo Drepanostachyum falcatum .
- Author
-
Meena RK, Negi N, Uniyal N, Bhandari MS, Sharma R, and Ginwal HS
- Subjects
- Chromosome Mapping, DNA, Plant genetics, High-Throughput Nucleotide Sequencing, Microsatellite Repeats genetics, Sasa classification, Species Specificity, Genome, Plant genetics, Genomics, Phylogeny, Sasa genetics
- Abstract
Drepanostachyum falcatum (Nees) Keng f. is one of the most widely distributed shrubby bamboo species in the temperate region of northwest (NW) Himalayas. Along with the other three temperate bamboo species, namely Yushania anceps , Thamnocalamus spathiflorus and Himalayacalamus falconeri , commonly called as 'ringal', and utilized for making various articles of household and commercial purpose by local artisans. Despite huge ecological and socio-economic importance, they are least studied and lacks baseline genetic information. In this study, ~10 Gb genome sequence data with 70.68 million reads were generated for D. falcatum , through genome skimming approach based on high throughput next-generation sequencing technology with Illumina protocol. The high-quality reads were de novo assembled into 31,997 contigs, which comprised 1943 microsatellite repeats. The dinucleotide and trinucleotide repeats were most abundantly distributed in the genome with 52.95 and 41.17%, respectively. Depending on the sufficient flanking sequence, only 1123 repeats were successfully tagged with primer pairs and these sites were designated as sequence-tagged microsatellite (STMS) markers. Further, a subset of 106 STMS markers were validated through PCR amplification; 77 marker loci were successfully amplified, and 48 of these showed polymorphism. Same set of marker loci were also tested for their cross-amplification in other three temperate bamboo species of the NW Himalayas, which revealed good level of transferability (27-48%) but lesser polymorphism (4-12%). In addition, the genomewide in silico cross-amplification revealed poor cross-transferability in other bamboo taxa representing four different phylogenetic lineages, namely Phyllostachys edulis (10.2%), Bonia amplexicaulis (3.03%), Guadua angustifolia (1.60%), Olyra latifolia (0.89%) and Raddia guianensis (0.36%). Ten polymorphic markers were further used to estimate the measures of genetic diversity in two natural populations, which revealed high genetic diversity (polymorphic information content, PIC = 0.889; expected heterozygosity, H
e = 0.756) and low genetic differentiation ( FST =0.061; Nm = 5.445). To the best of our knowledge, this is one of the pioneer studies carried out for the development of genomic STMS markers through genome skimming approach in Indian bamboo species. The marker information generated here is novel and of paramount importance for future genetic studies in D. falcatum as well as other temperate bamboo species through cross-transferability.- Published
- 2021
21. Chloroplast-based DNA barcode analysis indicates high discriminatory potential of matK locus in Himalayan temperate bamboos.
- Author
-
Meena RK, Negi N, Uniyal N, Shamoon A, Bhandari MS, Pandey S, Negi RK, Sharma R, and Ginwal HS
- Abstract
The study was conducted to evaluate the discriminatory potential of selected chloroplast-based DNA barcode regions for identifying and resolving phylogeny of the Indian bamboos. Among 11 chloroplast markers screened, only four, namely matK , rbcL , psbK - I and rps16 - trnQ showed successful amplification in 88 genotypes of 30 Indian bamboo taxa under Bambuseae and Arundinarieae tribes. A total of 244 sequences were generated for the four chloroplast regions. Tree-based analysis demonstrated that none of the tested regions successfully discriminated the taxa under Bambuseae tribe. Importantly, our highly concerned Himalayan temperate bamboo species under Arundinarieae tribe, were successfully discriminated by matK locus with high bootstrap support (>60%). Sequence comparisons revealed that the discriminatory power demonstrated by matK region actually lies in the few unique fixed nucleotides (UFNs) despite the overall DNA polymorphism. Although, rps16 - trnQ region was found to be the most polymorphic and revealed high genetic divergence among different taxonomic levels, it could not successfully discriminated the taxa with strong statistical support. In a taxonomically difficult plant group like bamboos, whose genome is relatively more complex and has a slow rate of molecular evolution, it is difficult to get a universal marker. Further, highly variable barcode regions utilized in other species may not be informative, and thus, the development of DNA barcodes for different taxonomic levels, such as lineages or tribes could be a viable approach., Competing Interests: Conflict of interestOn behalf of all authors, the corresponding author states that there is no conflict of interest., (© King Abdulaziz City for Science and Technology 2020.)
- Published
- 2020
- Full Text
- View/download PDF
22. First de novo genome specific development, characterization and validation of simple sequence repeat (SSR) markers in Genus Salvadora.
- Author
-
Bhandari MS, Meena RK, Shamoon A, Saroj S, Kant R, and Pandey S
- Subjects
- High-Throughput Nucleotide Sequencing, Salvadoraceae classification, Species Specificity, DNA, Plant genetics, Genome, Plant, Microsatellite Repeats, Polymorphism, Genetic, Salvadoraceae genetics
- Abstract
Salvadoraceae constitutes ecologically imperative desert families of 3 genera-Azima, Dobera and Salvadora. Under genus Salvadora of this family, S. oleoides is a keystone species of socio-economic and medicinal value. This species naturally grows in the arid zones but currently experiencing severe fragmentation due to land use change and reduced regeneration, which may have resulted in the depletion of genetic diversity. Hence, it is up-most important to develop genomic resources for studying the population genetics in S. oleoides. This study aims to develop robust microsatellites markers, which were not yet reported in genus Salvodora due to lack of genome sequence information. We developed novel microsatellites markers in S. oleoides using Illumina paired-end sequencing technology. In total, 14,552 simple sequence repeat (SSR) markers were successfully designed from 21,055 microsatellite repeats detected in the 13 Gb raw sequence data. Afterwards, a subset of 101 SSRs were randomly selected and validated, 94 primers were successfully amplified and 34 showed polymorphisms. These SSRs were used to estimate the measures of genetic diversity in three natural populations of state Rajasthan and Gujarat. Importantly, average number of alleles (N
a ), observed heterozygosity (Ho ), expected heterozygosity (He ), and polymorphism information content (PIC) were recorded as 2.4, 0.529, 0.357, and 0.326, respectively. Furthermore, 15 primers were evaluated in S. persica for cross-transferability, and all were successfully amplified but only eight showed polymorphisms. This study has been conducted first time for S. oleoides and pioneer among the native species of arid-zone in India.- Published
- 2020
- Full Text
- View/download PDF
23. First record of off-season flowering in Populus deltoides from India: paradigm of climate change indicator.
- Author
-
Thapliyal G, Vemanna RS, Pawar PM, Barthwal S, Meena RK, Pandey S, and Bhandari MS
- Subjects
- Climate Change, Flowers, India, Seasons, Trees, Populus
- Abstract
Populus deltoides is a fast-growing woody species possessing plethora of industrial applications. This species evolutionarily developed unisexual male and female catkin inflorescence on separate trees. Flowering usually occurs during early spring before the development of foliage, where buds appear near axils or at the extending shoots. In 2019, surveys were undertaken to study the flowering pattern of P. deltoides in the states of Punjab, Haryana, Uttar Pradesh and Uttarakhand in northern India. Interestingly, an anomalous flowering behaviour (appearance of off-season male catkins during autumn, i.e. October) was observed in a plantation trial at Kapurthala, Punjab. The male catkins were 2.7-3.1 ± 0.07 cm long and 0.3-0.5 ± 0.03 cm wide, which is significant for flowering and liberation of pollen grains. Preliminary results suggested that climatic factors, such as episodes of high or low temperature and the precipitation variation forcing the tree species to behave differently. Unearthing the climate-driven off-season flowering in other tree species alluded the stimulation of phytohormones, such as gibberellic and salicylic acid concentrations influencing the flowering time, therefore, needs further investigation in case of P. deltoides. Overall, this work provides early clues of changing climatic scenario altering the flowering pattern of a tropical forestry tree species.
- Published
- 2020
- Full Text
- View/download PDF
24. Health Seeking Behaviour among Medical Students in a Teaching Hospital of Nepal: A Descriptive Cross-sectional Study.
- Author
-
Bhandari MS and Chataut J
- Subjects
- Absenteeism, Adult, Cross-Sectional Studies, Education, Medical, Undergraduate, Female, Health Behavior, Hospitals, Teaching statistics & numerical data, Humans, Male, Nepal epidemiology, Attitude to Health, Patient Acceptance of Health Care psychology, Patient Acceptance of Health Care statistics & numerical data, Self Medication psychology, Self Medication statistics & numerical data, Students, Medical psychology, Students, Medical statistics & numerical data
- Abstract
Introduction: Medical students are more prone to suffer from various physiological and psychological problems but rather than seeking for formal health care, they tend to do informal consultation and often practice self medication. Thus, this study aimed to find out the health seeking behavior of medical students., Methods: This descriptive cross-sectional study was done among first and second year medical students of a teaching hospital from September to November 2019 after taking ethical approval from Institutional Review Committe. Total of 235 students were included in the study and self administered questionnaire was used. Data entry and analysis was done using Statistical Package for Social Sciences version 20.0., Results: Among 235 students who participated in the study, 172 (73%) reported having health problems in the last 12 months, and fever and headache were commonly reported by 21 (13%) and 18 (50%) students, respectively. Total of 112 (65%) students visited hospital/clinic for health problems and reason given for not visiting hospital/clinic was 12 (28%) thinking that the problem was minor. University hospital was the most preferred place 189 (80%) during health problem and parents were the first people for consultation 116 (49%). Mean duration of absenteeism was 2.17±4.1 days and 167 (88%) visited hospital more than five times., Conclusions: Health problems were common among students and most of them required multiple hospital visits. Many students seeked for health from hospital/ clinic but informal consultations were also seen.
- Published
- 2020
25. Practice of Breastfeeding and its Barriers among Women Working in Tertiary Level Hospitals.
- Author
-
Bhandari MS, Manandhar P, and Tamrakar D
- Subjects
- Adult, Child, Preschool, Cross-Sectional Studies, Female, Humans, Infant, Interviews as Topic, Middle Aged, Nepal, Time Factors, Young Adult, Breast Feeding statistics & numerical data, Infant Nutritional Physiological Phenomena, Personnel, Hospital statistics & numerical data, Tertiary Care Centers
- Abstract
Introduction: Breastfeeding provides ideal food for newborns and prevents recurrent infection and malnutrition in infants. In Nepal, breastfeeding is a universal practice but exclusive breastfeeding is low. As there is increased involvement of women in workforce, practice of breastfeeding may have been compromised. The main objective of the study was to examine the practice and barriers of breastfeeding among women working in tertiary level hospitals of Nepal., Methods: This was a hospital based descriptive cross-sectional study. Study participants were women working in Dhulikhel Hospital and Kathmandu Medical College and Teaching Hospital and was conducted from December 2017 to June 2018. Ethical approval was taken from institutional review committee of both institutions. Total of 208 women were included in the study and face to face interview was conducted. Data entry and analysis was done using statistical package of social sciences., Results: Breastfeeding practice was universal and colostrum was fed by 195 (94%) women. Pre-lacteal feeding was given by 14 (7%) women and 119 (57%) initiated breastfeeding within one hour of birth. Total of 93 (45%) children were exclusively breastfed for any duration while 10 (11%) were exclusively breastfed for six months. The mean duration of breastfeeding was 14.57 months and 90 (43%) started complementary feeding before six months. Total of 97 (51%) women and 42 (47%) women stated work as barrier for not exclusively breastfeeding and early complementary feeding respectively., Conclusions: Exclusive breastfeeding was very low and children were breastfed for less than two years. Complementary feeding was also started earlier and work was stated as the main barrier for poor breastfeeding practice.
- Published
- 2019
26. Phase II trial of oral uracil/tegafur plus leucovorin in patients with hormone-refractory prostate carcinoma.
- Author
-
Bhandari MS, Pienta KJ, Fardig J, Olson K, and Smith DC
- Subjects
- Adenocarcinoma diagnosis, Administration, Oral, Adult, Aged, Aged, 80 and over, Antineoplastic Combined Chemotherapy Protocols adverse effects, Disease Progression, Humans, Leucovorin administration & dosage, Leucovorin adverse effects, Male, Middle Aged, Prostate-Specific Antigen blood, Prostatic Neoplasms diagnosis, Tegafur administration & dosage, Tegafur adverse effects, Uracil administration & dosage, Uracil adverse effects, Adenocarcinoma drug therapy, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Prostatic Neoplasms drug therapy
- Abstract
Background: The current study evaluated the efficacy of oral uracil/tegafur (UFT) and leucovorin (LV) in patients with hormone-refractory metastatic prostate carcinoma., Methods: Twenty-eight patients with hormone-refractory metastatic carcinoma of the prostate who had undergone antiandrogen withdrawal and no more than 1 prior chemotherapy treatment were enrolled on a single-institution Phase II trial. Patients were treated with oral UFT at a dose of 300 mg/m2/d and oral LV at a dose of 90 mg/day for 28 days followed by 7 days off therapy on a 35-day cycle regimen., Results: Twenty-six patients were evaluable for response and toxicity. There was no response by objective criteria in 9 patients with measurable disease. Four responses by prostate-specific antigen (PSA) criteria (i.e., PSA decrease by > 50%) were noted (15%) lasting a mean of 20.5 weeks. Therapy was generally well tolerated, with 2 patients developing Grade 4 toxicity (1 patient each with diarrhea and hand-foot syndrome) and 4 patients having significant Grade 3 toxicity (anemia, hyperbilirubinemia, and vomiting) (Toxicity was graded according to the National Cancer Institute Common Toxicity Criteria). Six patients had stable disease by clinical, laboratory, and radiologic criteria for an average of 5 cycles of treatment (25 wks)., Conclusions: Although UFT and LV are generally well tolerated in the setting of hormone-refractory metastatic prostate carcinoma, the combination has a low level of activity. Its toxicity and activity is similar to that observed when intravenous 5-fluorouracil or capecitabine are given alone. It may be an option for further investigations in combination regimens., (2006 American Cancer Society)
- Published
- 2006
- Full Text
- View/download PDF
27. Should intermittent androgen deprivation be used in routine clinical practice?
- Author
-
Bhandari MS, Crook J, and Hussain M
- Subjects
- Androgen Antagonists pharmacology, Clinical Trials, Phase III as Topic, Humans, Male, Androgen Antagonists therapeutic use, Practice Patterns, Physicians', Prostatic Neoplasms drug therapy
- Abstract
For several decades, androgen deprivation (AD) has been the mainstay for treating metastatic prostate cancer. AD can be attained by a variety of means; however, irrespective of modality and a gratifying initial high response rate, almost all patients advance to a state of androgen independence and ultimately a hormone-refractory state. Improved understanding of the biology and mechanisms of progression to androgen independence coupled with promising preclinical data have led to investigating intermittent AD (IAD) as a way of improving disease control while maintaining quality of life. Preliminary published clinical experience, mostly from uncontrolled trials, suggests the feasibility of this approach. Two ongoing cooperative-group phase III trials are evaluating the survival impact of IAD both in patients with metastatic disease and in those with prostate-specific antigen failure post-radiation therapy. There are several unanswered questions regarding this approach, and until more definitive data regarding its safety and impact on survival are available, IAD should be considered experimental. In this review, we detail the background and preclinical scientific rational for investigating IAD, and we review published clinical experience and describe the ongoing phase III clinical trials. We also discuss special considerations for using IAD outside the context of a clinical trial.
- Published
- 2005
- Full Text
- View/download PDF
28. Epothilones and the next generation of phase III trials for prostate cancer.
- Author
-
Bhandari MS and Hussain M
- Subjects
- Antineoplastic Combined Chemotherapy Protocols therapeutic use, Clinical Trials, Phase II as Topic, Epothilones administration & dosage, Estramustine administration & dosage, Humans, Male, Randomized Controlled Trials as Topic, Taxoids therapeutic use, Clinical Trials, Phase III as Topic, Epothilones therapeutic use, Prostatic Neoplasms drug therapy
- Published
- 2005
- Full Text
- View/download PDF
29. Clinical trials in metastatic prostate cancer--has there been real progress in the past decade?
- Author
-
Bhandari MS, Petrylak DP, and Hussain M
- Subjects
- Angiogenesis Inhibitors therapeutic use, Antineoplastic Agents, Phytogenic therapeutic use, Docetaxel, Humans, Male, Suramin therapeutic use, Taxoids therapeutic use, Treatment Outcome, Antineoplastic Agents therapeutic use, Clinical Trials as Topic trends, Prostatic Neoplasms drug therapy
- Abstract
Hormone refractory prostate cancer remains a challenge. While only palliative treatment strategies were available for the past several decades, many promising agents have been investigated over the past decade. Of those the taxanes appeared with significant anti-tumor activity and recently, two large randomized controlled trials demonstrated for the first time, a survival and palliative benefit with docetaxel based chemotherapy. In the current era, recurrent disease after local treatment for localized disease is diagnosed long before evidence of systemic disease. With earlier institution of hormonal treatments, patients are becoming "hormone refractory" earlier in the course of their disease with considerable long life expectancy. Hence, there is a greater need than ever for more treatment options for this expanding group of patients. A number of new systemic therapies have recently emerged, based on a deeper understanding of prostate cancer biology. Novel chemotherapeutics such as the epothilones, molecularly targeted therapies against angiogenesis, the proteosome and endothelin receptor antagonists, as well as biological agents such as anti-sense oligonucleotides are being tested as part of the armamentarium. Key to progress in the therapy of this fatal disease is the commitment and timely enrolment of prostate cancer patients in clinical trials.
- Published
- 2005
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.