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ON SIZE-BIASED POISSON DISTRIBUTION AND ITS USE IN ZERO-TRUNCATED CASES
KHURSHID AHMAD MIR 한국산업응용수학회 2008 Journal of the Korean Society for Industrial and A Vol.12 No.3
A size-biased Poisson distribution is defined. Its characterization by using a recurrence relation for first order negative moment of the distribution is obtained. Different estimation methods for the parameter of the model are also discussed. R-Software has been used for making a comparison among the three different estimation methods.
Ahmad, Khurshid,Baig, Mohammad Hassan,Mushtaq, Gohar,Kamal, Mohammad Amjad,Greig, Nigel H.,Choi, Inho Bentham Science 2017 Current Alzheimer research Vol.14 No.11
<P>Conclusion: The studies concentrating on the commonalities in biological pathways, cellular mechanisms and genetics may provide the scope to researchers to identify few novel common target(s) for disease prevention and development of effective common drugs for multi-neurodegenerative diseases.</P>
On Size-Blased Poisson Distribution And Its Use In Zero-Truncated Cases
( Khurshid Ahmad ) 한국산업응용수학회(구 한국산업정보응용수학회) 2008 한국산업정보응용수학회 Vol.12 No.3
A size-biased Poisson distribution is defined. Its characterization by using a recurrence relation for first order negative moment of the distribution is obtained. Different estimation methods for the parameter of the model are also discussed. R-Software has been used for making a comparison among the three different estimation methods.
SYED SAYEED AHMAD,천희진,Khurshid Ahmad,Sibhghatulla Shaikh,임정호,샤히드알리,한성수,허선진,JUNG-HOON SOHN,이은주,최인호 한국축산학회 2023 한국축산학회지 Vol.65 No.1
Cultured meat is a potential sustainable food generated by the in vitro myogenesis of muscle satellite (stem) cells (MSCs). The self-renewal and differentiation properties of MSCs are of primary interest for cultured meat production. MSC proliferation and differentiation are influenced by a variety of growth factors such as insulin-like growth factors (IGF-1 and IGF- 2), transforming growth factor beta (TGF-β), fibroblast growth factors (FGF-2 and FGF-21), platelet-derived growth factor (PDGF) and hepatocyte growth factor (HGF) and by hormones like insulin, testosterone, glucocorticoids, and thyroid hormones. In this review, we investigated the roles of growth factors and hormones during cultured meat production because these factors provide signals for MSC growth and structural stability. The aim of this article is to provide the important idea about different growth factors such as FGF (enhance the cell proliferation and differentiation), IGF-1 (increase the number of myoblasts), PDGF (myoblast proliferation), TGF-β1 (muscle repair) and hormones such as insulin (cell survival and growth), testosterone (muscle fiber size), dexamethasone (myoblast proliferation and differentiation), and thyroid hormones (amount and diameter of muscle fibers and determine the usual pattern of fiber distributions) as media components during myogenesis for cultured meat production.
Therapeutic applications of ginseng for skeletal muscle-related disorder management
Syed Sayeed Ahmad,Hee Jin Chun,Khurshid Ahmad,Inho Choi 고려인삼학회 2024 Journal of Ginseng Research Vol.48 No.1
required to maintain body functions. Furthermore, the maintenance of SM is dependent on the activationof muscle satellite (stem) cells (MSCs) and the subsequent proliferation and fusion of differentiatingmyoblasts into mature myofibers (myogenesis). Natural compounds are being used as therapeutic optionsto promote SM regeneration during aging, muscle atrophy, sarcopenia, cachexia, or obesity. Inparticular, ginseng-derived compounds have been utilized in these contexts, though ginsenoside Rg1 ismostly used for SM mass management. These compounds primarily function by activating the Akt/mTORsignaling pathway, upregulating myogenin and MyoD to induce muscle hypertrophy, downregulatingatrophic factors (atrogin1, muscle ring-finger protein-1, myostatin, and mitochondrial reactive oxygenspecies production), and suppressing the expressions of tumor necrosis factor-a (TNF-a) and interleukin-6 (IL-6) in cachexia. Ginsenoside compounds are also used for obesity management, and their antiobesityeffects are attributed to peroxisome proliferator activated receptor gamma (PPARg) inhibition,AMPK activation, glucose transporter type 4 (GLUT4) translocation, and increased phosphorylations ofinsulin resistance (IR), insulin receptor substrate-1 (IRS-1), and Akt. This review was undertaken toprovide an overview of the use of ginseng-related compounds for the management of SM-relateddisorders.
Raish, Mohammad,Khurshid, Mohsin,Ansari, Mushtaq Ahmad,Chaturvedi, Pankaj Kumar,Bae, Su-Mi,Kim, Jang Heub,Park, Eun Kyung,Park, Dong Chun,Ahn, Woong Shick Springer-Verlag 2012 JOURNAL OF CANCER RESEARCH AND CLINICAL ONCOLOGY Vol.138 No.7
<P>The aim of this study was to identify novel genes following genomic DNA copy number changes using a genome-wide array-based comparative genomic hybridization (array-CGH) analysis in uterine leiomyosarcoma (ULMS).</P>
Improvement of photosynthesis in changing environment: approaches, achievements and prospects
Suboktagin Sultan,Khurshid Ghazal,Bilal Misbah,Abbassi Anum Zeb,Kwon Suk-Yoon,Ahmad Raza 한국식물생명공학회 2024 Plant biotechnology reports Vol.18 No.1
Photosynthesis is responsible for sustained plant productivity and ensures food supply. The change in global climatic pat- terns affects photosynthesis that subsequently reduces plant yield and poses threat to food security. Photosynthesis relies on a dual nature enzyme ribulose 1, 5 bisphosphate carboxylase oxygenase (Rubisco), which can fix CO2 as well as O2. The fixation rate of CO2 to O2 depends upon the relative concentration of CO2 inside chloroplast. Higher level of CO2 results in improved photosynthesis, however, its concentration depends upon environmental conditions. Under adverse climate condi- tions, the CO2 level drops down that leads to increased oxygenation which impedes the photosynthesis and reduces plant productivity. The impact is more significant and apparent specifically in C3 plants. Attempts have been made to address the loss in photosynthesis and multiple strategies have been adapted to date that focus on improvement of photosynthesis in C3 plants. In this review, we have discussed the multiple strategies being employed by different researchers to date for improvement of photosynthesis. The strategies discussed in this review include: improving the performance of Rubisco, engineering CO2-concentrating mechanism of C4 photosynthesis into C3 species, transformation of bicarbonate transport- ers from cyanobacteria into chloroplasts of C3 plants, and establishment of photorespiratory bypasses to catabolise toxic glycolate in shortest possible pathway.
Tayeb, Muhammad,Rauf, Fozia,Ahmad, Khurshid,Khan, Faiz Muhammad Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.4
Background: The objectives of the study were to: 1) determine the frequency of incidental malignancy in unsuspected/grossly normal looking gall bladders; 2) determine the frequency of malignancy in suspected/grossly abnormal looking gall bladders. Materials and Methods: This prospective, cross sectional study was carried out at a tertiary care hospital in Pakistan, during a four year period (Jan 2009-dec2012). All the cholecystectomy cases performed for gallstone diseases were examined initially by a surgeon and later on by a pathologist for macroscopic abnormalities and accordingly assigned to one of the three categories i.e. grossly normal, suspicious, abnormal/malignant. Frequency of incidental carcinoma in these categories was observed after receiving the final histopathology report. Results: A total of 426 patients underwent cholecystectomy for cholelithiasis, with a 1:4 male: female ratio. Mean age of the patients was 45 years with a range of 17-80 years. The frequency of incidental gallbladder carcinoma was found to be 0.70 %(n=3). All the cases of gallbladder carcinoma were associated with some macroscopic abnormality. Not a single case of incidental carcinoma gallbladder was diagnosed in 383 'macroscopically normal looking' gallbladders. Conclusions: Incidental finding of gall bladder cancer was not observed in any of macroscopically normal looking gall bladders and all the cases reported as carcinoma gallbladder had some gross abnormality that made them suspicious. We suggest histopathologic examination of only those gall bladders with some gross abnormality.
Misbah Bilal,Anum Zeb Abbasi,Ghazal Khurshid,Charilaos Yiotis,Jamshaid Hussain,Mohammad Maroof Shah,Tatheer Naqvi,권석윤,박연일,Bruce Osborne,Raza Ahmad 한국식물생명공학회 2019 Plant biotechnology reports Vol.13 No.4
Transgenic Arabidopsis thaliana plants expressing cyanobacterial decarboxylation genes GLCD1 (GLYCOLATE DEHYDROGENASE I), HDH (HYDROXYACID DEHYDROGENASE), ODC (OXALATE DECARBOXYLASE) alone, and HDH::ODC simultaneously were successfully developed. Plants independently expressing GLCD1, HDH, ODC, and HDH::ODC were referred to as GD, HD, OX, and HX plants, respectively. The single-copy homozygous GD, HD, OX, and HX plants exhibited appreciable expression of chimeric genes. Phenotypic characterization demonstrated that rosette diameter of GD, HD, OX, and HX was 20, 22, 17, and 16% higher than wild-type (WT) plants. Total numbers of leaves were 32, 35, 37, and 34% more than WT plants after 32 days of sowing. Similarly, all transgenic plants produced more cauline branches than WT plants. All transgenic plants gained more height as compared to WT when recorded after 42 days of growth except HX transgenic plants. Plants vegetative dry biomass was 43% (GD), 35% (HD), 42% (OX), and 36% (HX) higher than WT plants. This is the first report on characterization of cyanobacterial decarboxylation pathway genes, which will pave the way for transformation of complete pathway in plants for better biomass accumulation.