172 results on '"Nadeem, Sheikh"'
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2. Exploring the Differences and Manipulation Pathways of Introductory Aerospace Engineering Problems through Concept Mapping.
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Andrew T. Olewnik, Scott Ferguson, Amrith Mariappan, and Nadeem Sheikh
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- 2022
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3. Nanoengineering of extracellular vesicles for drug delivery systems: Current advances and future directions
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Ali Afzal, Muhammad Babar Khawar, Ume Habiba, Sara Shahzaman, Syeda Eisha Hamid, Mussarat Rafiq, Muddasir Hassan Abbasi, and Nadeem Sheikh
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Extracellular vesicles ,Nanocarriers ,Nanoengineering ,Therapeutics ,Drug delivery systems ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Extracellular Vesicles (EVs) have gained high repute in drug delivery systems owing to their relatively higher efficacy as natural drug delivery vehicles. The current literature has advanced the use of EVs in drug delivery through exploring various aspects including their biogenesis, characterization, and nanoengineering techniques thereby leading them from laboratory to clinical use with optimized good laboratory practices. In this timely review, we summarize the current status of EVs characterizations and recent updates on nanoengineering of EVs regarding Cargo loading and surface fabrication. Further, we have also reviewed current progress in clinical translation and implications of EVs in clinical trials together with future recommendations.
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- 2023
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4. Nano-immunoengineering of CAR-T cell therapy against tumor microenvironment: The way forward in combating cancer
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Muhammad Babar Khawar, Ali Afzal, Muddasir Hassan Abbasi, Nadeem Sheikh, and Haibo Sun
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CAR-T cell therapy ,Solid tumors ,Tumor microenvironment ,Immunoengineering ,Nanotechnology ,Clinical translation ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Chimeric antigen receptor (CAR) T cell treatment is an emerging subject following its curative response in hematological metastasis. However, solid tumors present a number of obstructions which have been a bull's eye to steer the CARs toward another victory in solid tumor microenvironment (TME). To combat against solid tumors, the construction, transfection and delivery of CARs is obliged to nano-engineering for better results and success in clinical trials. Herein, in this minireview, we discuss some of the potential and novel applications of nanotechnology to engineer better performing CARs to target solid TME. Moreover, we highlight potential gaps and strategies to overcome for future advancements in nano immunoengineering.
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- 2023
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5. Cell free DNA; diagnostic and prognostic approaches to oncology
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Sjawal Arshad, Muhammad Babar Khawar, Ali Hassan, Ali Afzal, Abdullah Muhammad Sohail, Maryam Mukhtar, Muddasir Hassan Abbasi, Nadeem Sheikh, Arwa Azam, Sara Shahzaman, and Syeda Eisha Hamid
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Cell-free DNA (cfDNA) ,Cancer ,Tumor ,Diagnostic potential ,Prognostic potential ,Apoptosis ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Cell-free DNA (cfDNA) are un-encapsulated DNA fragments present in biological fluids ranging in an average size of up to 200 base pairs. The novel use of cfDNA is a prime candidate in the diagnostic and prognostic approach to unveiling many inflammatory diseases, especially cancer. Moreover, their potential as biomarkers is due to their ubiquitous presence in the body, non-invasive nature, and aiding in a different autopsy method. This review will focus on the diagnostic and prognostic potential of cfDNA as non-invasive biomarkers in oncology.
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- 2022
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6. Genetic Analysis of Sodium Channel Genes in Pediatric Epilepsy Patients of Pakistan
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Aqsa Ashfaq, Tayyaba Saleem, Nadeem Sheikh, and Hafsa Maqbool
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Genetics ,QH426-470 - Abstract
Epilepsy affects millions of people worldwide. Although antiepileptic drugs work for the majority of epileptic patients, these drugs do not work for some of the patients, subjecting them to drug-resistant epilepsy (DRE). Voltage-gated sodium channels act as targets for a number of antiepileptic drugs, and the genes encoding these channels can play a crucial role in developing drug-resistant epilepsy. This case-control (100 control: 101patients) study evaluated the association of sodium channel genes SCN1A and SCN2A with drug-resistant epilepsy. The cases were further accounted in two categories, drug-resistant and drug-responsive epileptic patients. The polymorphic sites rs794726754, rs1057518252, rs121918809, rs12191792, rs121917932, c.730 G > T, c.735 G > T, c.736 A > T, rs10167228, and rs2298771 of the SCN1A gene and rs17183814 of SCN2A gene were selected for mutational analysis. The DNA was isolated, amplified by PCR, and then, was run through 1% agarose gel. The sequencing was performed, and the sequences were observed through BioEdit software for any change in DNA sequence. In our study, no polymorphism was observed in the studied SNPs except for rs2298771. For rs2298771, a significant difference existed in the distribution of genotypic and allelic frequencies (p 0.01). Our study indicated that the rs2298771 polymorphism of SCN1A may not be associated with chance of developing DRE in the Pakistani population.
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- 2022
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7. Genetic Analysis of CYP2C9 with Reference to Drug Response in Epilepsy Patients of Pakistan
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Hafsa Maqbool, Tayyaba Saleem, Nadeem Sheikh, and Aqsa Ashfaq
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Genetics ,QH426-470 - Abstract
Epilepsy is a major global issue. Epilepsy patients are treated with AED (antiepileptic drugs). Interindividual variability in drug response has been documented in several studies. The resistance to drug response may be attributed to genetic polymorphism. The current study was undertaken to investigate the CYP2C9 gene polymorphism associated with antiepileptic drug (AED) resistance in the Pakistani population. The current study included 337 individuals including 100 control subjects, 110 drug-resistant subjects, and 127 drug responders. Genomic DNA was isolated from blood, and amplification of rs1799853 (430C > T) and rs1057910 was carried out by polymerase chain reaction. Genotypes of CYP2C9 SNPs were determined by Sanger’s sequencing. Astounding results were observed in the current study that none of the well-known reported SNPs of CYP2C9 was found in our Pakistani cohorts. However, a novel missense variant (c.374G > A) was found only in drug-resistant patients of the current study. According to the in silico analysis performed by PolyPhen-2, it was observed that this nonsynonymous substitution is likely to be pathogenic. The results of our study demonstrated that rs1799853 and rs1057910 may be involved in drug resistance in the Pakistani population. However, some other variants on CYP2C9 may play a critical role in AED resistance that needs to be explored.
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- 2022
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8. TLR-8, TNF-α, and ESR-1α Gene Polymorphism Susceptibility in Onset of Arthritis
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Maryam Mukhtar, Nadeem Sheikh, Andleeb Batool, Tayyaba Saleem, Muhammad Babar Khawar, Mavra Irfan, and Saira Kainat Suqaina
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Genetics ,QH426-470 - Abstract
Arthritis is a genetic disorder characterized by bones and joint degradation assisted by severe pain and inflammation. It is evident by the studies that 0 candidate genes variations play vital role in its development and progression. Therefore, we investigated the genetic variation of TLR-8, TNF, and ESR-1α genes in the Pakistani population. A case-control study comprising 300 RA, 316 OA, and 412 control subjects was conducted. PCR-RFLP and direct sequencing methods were used for determining genetic variations. Analysis was performed by using PLINK and MEGA 6.0 software. Allelic and genetic frequencies of polymorphisms identified on rs3764879 (TLR-8), rs3764880 (TLR-8), rs5744080 (TLR-8), rs1800629 (TNF), rs2228480 (ESR-1α), and rs1451501590 (ESR-1α) were significantly varied among RA, OA, and controls. Novel functional mutations SCV000844945 and SCV000844946 on TLR-8 as well as a non-functional SCV000804801 and functional variation SCV000804802 on ESR-1α were also identified and reported for the first time in the studied population. Multiple site analyses indicated that polymorphisms on TLR-8 and ESR-1α genes were significant risk factors in disease onset to the next generation. In conclusion, TLR-08 and ESR-1α were significant in the onset of arthritis whereas the TNF was not found as a significant risk factor in the onset of RA and OA.
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- 2022
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9. Psychological impacts of COVID-19 and satisfaction from online classes: disturbance in daily routine and prevalence of depression, stress, and anxiety among students of Pakistan
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Muhammad Babar Khawar, Muddasir Hassan Abbasi, Shabbir Hussain, Mehwish Riaz, Mussarat Rafiq, Rabia Mehmood, Nadeem Sheikh, Hafiza Nabeela Amaan, Sana Fatima, Faiza Jabeen, Zaira Ahmad, and Adil Farooq
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COVID-19 ,Pandemic ,Panic ,Stress management ,Psychological impact ,Students ,Science (General) ,Q1-390 ,Social sciences (General) ,H1-99 - Abstract
The present study investigated the (i) socio-demographic predictors of psychological distress, (ii) socio-demographic predictors of satisfaction from online classes, and (iii) the relationship between psychological distress and satisfaction from online classes among university students of Pakistan during the COVID-19 pandemic. An online questionnaire-based survey was conducted. A total of 2220 respondents that was enrolled at the University of the Punjab (PU), University of Management and Technology (UMT), and the University of Central Punjab (UCP) were involved in the current study. Data were collected at a 64% response rate and analyzed with SPSS IBM Version 21.0. Results revealed that approximately 41% of the students were facing severe psychological distress while about 65% were found unsatisfied with online classes. Besides, a linear negative relationship between the independent variable, i.e. psychological distress and the dependent variable, i.e. satisfaction from online classes was found. Therefore, to minimize the level of psychological distress and increase students’ satisfaction with online classes it is highly recommended to take precautionary measures by the relevant stakeholders.
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- 2021
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10. Therapeutic Potential of Microbial Metabolites: New Insights and Perspectives
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Muhammad Idnan, Rabia Mehmood, Muhammad Ahsan Ashraf, Adil Farooq, Ume Habiba, Syeda Eisha Hamid, Sara Shahzaman, Maryam Mukhtar, Nimra Afzal, Nadeem Sheikh, Muddasir Hassan Abbasi, Nayab Shahid, Ali Afzal, Rimsha Naseem, Muhammad Babar Khawar, and Muhammad Abu Talha Safdar Hashmi
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General Biochemistry, Genetics and Molecular Biology - Published
- 2023
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11. Avelumab in Men With Metastatic Castration-Resistant Prostate Cancer, Enriched for Patients Treated Previously With a Therapeutic Cancer Vaccine
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Ravi A. Madan, Jason M. Redman, Fatima Karzai, William L. Dahut, Lisa Cordes, Farhad Fakhrejahani, Tuyen Vu, Nadeem Sheikh, Jeffrey Schlom, and James L. Gulley
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Pharmacology ,Cancer Research ,Immunology ,Immunology and Allergy - Published
- 2023
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12. Inimical impact of high-fat diet on expression of heme oxygenase-1, trace metals content, and associated intestinal histopathology
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Nadeem Sheikh, Shakira Shakeel, Tasleem Akhtar, and Muhammad Babar Khawar
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Health, Toxicology and Mutagenesis ,Toxicology - Abstract
A high-fat diet (HFD) is one of the most prominent causative factors for obesity and metabolic inflammation. The effects of HFD overconsumption on intestinal histology, expression of haem oxygenase-1 (HO-1), and transferrin receptor-2 (TFR2) remain elusive. The present study was conducted to analyze the effect of HFD on these parameters. To develop the HFD-induced obese model, rat colonies were divided into 3 groups; the control group was reared on normal rat chow, whereas groups I and II were given HFD for 16 weeks. Hematoxylin and eosin (H & E) staining revealed marked epithelial changes, inflammatory cell infiltrates, and destruction of mucosal architecture in both experimental groups as compared to the control group. Sudan Black B staining showed a high triglyceride deposition in the intestinal mucosa of animals fed on HFD. Atomic absorption spectroscopy revealed a decrease in tissue copper (Cu) and selenium (Se) concentration in both HFD experimental groups. Whereas the cobalt (Co) and manganese (Mn) levels were comparable to controls. The mRNA expression levels of HO-1 and TFR2 were found to be significantly upregulated in HFD groups compared to the control group. Hence, HFD consumption leads to histopathological changes and altered gene expression in the rodent intestine. So, one should remove HFD from daily meals to avoid related metabolic complications.
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- 2022
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13. GABRG2 C588T Polymorphism Is Associated with Idiopathic Generalized Epilepsy but Not with Antiepileptic Drug Resistance in Pakistani Cohort
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Tayyaba Saleem, Hafsa Maqbool, Nadeem Sheikh, Asima Tayyeb, Maryam Mukhtar, and Aqsa Ashfaq
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Article Subject ,General Immunology and Microbiology ,General Medicine ,General Biochemistry, Genetics and Molecular Biology - Abstract
Idiopathic generalized epilepsy (IGE) is the most prevalent type of epilepsy with genetic origin. Mutations in ion channel genes have been identified as a common cause of IGE. Several studies have reported various epilepsy risk variants of GABRG2 (gamma-aminobutyric acid type A receptor subunit gamma2 subunit) gene in different ethnic groups, but the results are inconsistent. The purpose of this case-control research is to determine if GABRG2 polymorphisms contribute to IGE susceptibility and antiepileptic drug resistance in Pakistani population. For this purpose, we genotyped exon2, exon5 (C540T and C588T), exon7 (T813C), exon8 (K289M), and exon9 of GABRG2 gene by restriction fragment length polymorphism and Sanger’s sequencing in 87 drug-responsive idiopathic generalized epilepsy patients, 55 drug-resistant epilepsy patients, and 83 healthy controls. Restriction fragment length polymorphism (RFLP) and sequencing results indicated only C588T polymorphism in the studied subjects. The comparison of genotypic and allelic frequencies showed significant differences between IGE patients and control groups ( P = 0.008 and odds ratio = 4.2 ) and nonsignificant association of C588T polymorphism in antiseizure medication-resistant patients ( P = 0.9 ). Our findings showed that C588T polymorphism of GABRG2 is a risk variant for IGE in Pakistani population. Further studies are required to validate the results.
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- 2022
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14. Overview of the advantages and disadvantages of chimeric antigen receptor T cell therapy in the tumor microenvironment
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Nadeem Sheikh, Muhammad Babar khawar, Muddasir Hassan Abbasi, and Adil Farooq
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General Biochemistry, Genetics and Molecular Biology - Published
- 2022
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15. 3D: diversity, dynamics, differential testing - a proposed pipeline for analysis of next-generation sequencing T cell repertoire data.
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Li Zhang 0017, Jason Cham, Alan Paciorek, James Trager, Nadeem Sheikh, and Lawrence Fong
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- 2017
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16. Neutrophil-to-lymphocyte ratio as a promising biomarker for the diagnosis of psoriasis in Pakistan
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Rabia Mehmood, Fareeha Azam, Mussarat Rafiq, Syed Shakeel Shah, Nadeem Sheikh, Muddasir Hassan Abbasi, Syeda Eisha Hamid, Suneela Aman, Ali Afzal, Muhammad Babar Khawar, and Benish Nawaz
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General Biochemistry, Genetics and Molecular Biology - Published
- 2022
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17. A Model-View-ViewModel (MVVM) Application Framework for Hearing Impairment Diagnosis.
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Waseem Sheikh and Nadeem Sheikh
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- 2019
18. Bisphenol S induced dysregulations in liver; iron regulatory genes and inflammatory mediators in male Wistar rats
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Shazia Ghafoor, Muddasir Hassan Abbasi, Muhammad Babar Khawar, Asima Tayyeb, Tayyaba Saleem, Isbah Ashfaq, and Nadeem Sheikh
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Male ,Liver ,Iron ,Health, Toxicology and Mutagenesis ,Genes, Regulator ,Animals ,Environmental Chemistry ,General Medicine ,Rats, Wistar ,Inflammation Mediators ,Benzhydryl Compounds ,Pollution ,Rats - Abstract
Bisphenol S (BPS), an analog of bisphenol A (BPA), has been frequently detected in consumer products, food wrappers, plastics, and thermal papers. Since the liver is a hub of metabolic and detoxification pathways, thus intimately related to BPS presence in the environment and body. The current study was designed to investigate the effects of BPS administration in an animal model. Twenty-five male Wistar rats weighing 175 ± 25 g were randomly divided into control and treated groups. The control group was further divided into group I (no treatment) and group II (corn oil), whereas the treatment group was divided into D-I (40 mg/kg/day), D-II (200 mg/kg/day), and D-III (400 mg/kg/day) groups, getting oral doses of BPS for 15 days. Data analysis showed a significant statistical increase in hepatic enzymes ALT (33.4%), AST (25.4%), and ALP (529.6%) in the D-III group along with the development of hypercholesterolemia and hypertriglyceridemia in all BPS groups. Aberrant mRNA expressions of some key hepatic iron regulatory genes and inflammatory mediators were evident through qRT-PCR. Bisphenol S caused congestion of central vein from mild to moderate in hepatic sections. In conclusion, our investigation insinuates BPS intoxication potential and therefore may not be a safe alternative to BPA.
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- 2022
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19. Geometric Morphometrics Analysis of Inter-Population Wing Shape Variations in Bats
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Zaira Ahmad, Sajid Rashid Ahmad, Muddasir Hassan Abbasi, and Nadeem Sheikh
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Background: The cryptic diversity of bat fauna in Pakistan demands to incorporate an efficient and reliable approach for morphological species identification. The traditional taxonomic approaches are effective in exploring variations of characters but have proved to be less efficient in quantifying the interspecific and intraspecific differences. Geometric morphometric method has recently act as an efficient tool to analyze the overall changes in shape and size of biological features. The present study is therefore conducted to exploit the use of geometric morphometric methods along with traditional morphological measurements to examine the size and shape differences among four geographically isolated population groups of insectivorous bat species (Pipistrellus coromandra). Methods: Specimens were collected from different locations of Punjab, Pakistan. Twelve well-defined landmarks to quantify the variation in right wing of bats were analyzed using geometric morphometric tools and wing measurements of 5 selected parameters were also taken using traditional morphological measurements. Results: The results of external measurements for wing overlapped for most part among the different studied population groups. Fur colour photographs displayed in the inter-population had shown visible change from dark brown to light brown giving an indication of more morphological differences. Regarding the geometric morphometric results, wing-shape differences were found to dominate in inter-population as compared to intra-population for bats species (Pipistrellus coromandra) which clearly reflects the effects of habitat factors on different populations phenotypically. The wireframe for the first two PCs indicated an overall shape change trend with the displacement of landmark points representing the expansion along the upper wing margins in PC1 compared to PC2. Conclusion: The current study has successfully explored the power of geometric morphometric in reflecting the variations in wing shape among different populations of bats species (Pipistrellus coromandra).
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- 2022
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20. A Synonymous Variant, GABRG2 rs211037 might be a Predictive Genetic Marker of Migraine: A Case Control Study from Pakistan
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Tayyaba Saleem, Hafsa Maqbool, Saira Suqaina, Mavra Irfan, Raana Zafar, and Nadeem Sheikh
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Background: Migraine is a severe neurovascular disease with some temporary symptoms like unilateral headache attacks associated with sensory and autonomic disturbances. It affects 12% of the general population worldwide. Females are more susceptible to migraine than males. The genetic and environmental factors contribute as a causative agent to its symptomatology. Gamma-aminobutyric acid (GABA) neurotransmitter plays a potential role in migraine pathophysiology that prompted us to evaluate the association between gamma-aminobutyric acid type a receptor gamma two subunit gene (GABRG2) polymorphisms and the risk of a migraine attack. Methods The present case-control study included 220 subjects (100 control; 120 patients). Blood samples were taken from all the participants and DNA was isolated. The selected SNPs (rs211037, rs121909672, and T813C) of exons 5, 7, and 8 of the GABRG2 gene were genotyped for cases and controls. Results: A silent polymorphism was found at the rs211037 polymorphic site, while no variation was found on other targeted sites either in the case or control population. Statistical analysis indicated significant differences in genotypic (p=
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- 2022
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21. Mechanistic study of regulation of iron homeostasis by N. sativa seeds and P. ovata husks on high fat/high sucrose diet induced non-alcoholic fatty liver disease
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Afshan Syed Abbas, Tasleem Akhtar, Najma Shaheen, Sumaira Aslam, and Nadeem Sheikh
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Sucrose ,Liver ,Non-alcoholic Fatty Liver Disease ,Iron ,Seeds ,Genetics ,Animals ,Homeostasis ,General Medicine ,Rats, Wistar ,Diet, High-Fat ,Molecular Biology ,Rats - Abstract
In recent years, nonalcoholic fatty liver disease (NAFLD) has reached epidemic proportions. Characteristic findings in NAFLD patients are elevated iron stores, as iron plays an important role in the pathophysiology of chronic liver disease. The current study was aimed at investigating the possible protective effects of N. sativa seeds and P. ovata husks on the regulation of iron homeostasis in NAFLD.Two age groups of Wistar rats (four weeks and twelve weeks old), further subdivided into four groups were fed on high fat/high sucrose (HF/SF) diet for sixteen weeks to induce NAFLD and randomized into three groups (HF/SF diet control (Group I), HF/SF diet with N. sativa seeds (Group II) and HF/SF diet with P. ovata husks (Group III) and normal diet, serving as negative control (Group 0). At the end of the experiment, histochemical analysis of hepatic sections, biochemical evaluates of the blood, and gene expression analysis were conducted.The results revealed that both N. sativa seeds and P. ovata husks possess the capacity to maintain iron homeostasis by regulating the level of blood hemoglobin, serum iron contents, expression of key genes involved in iron metabolism, and iron deposition in hepatic sections. While N. sativa seeds proved more effective.N. sativa seeds are a more potent iron regulator compared to P. ovata husks at reducing the iron overburden associated with NAFLD.
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- 2022
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22. Dichotomous role of autophagy in cancer
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Amin Arif, Muhammad Babar Khawar, Rabia Mehmood, Muddasir Hassan Abbasi, and Nadeem Sheikh
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Geography, Planning and Development ,Management, Monitoring, Policy and Law - Abstract
Autophagy is an evolutionary conserved catabolic process that plays physiological and pathological roles in a cell. Its effect on cellular metabolism, the proteome, and the number and quality of organelles, diversely holds the potential to alter cellular functions. It acts paradoxically in cancer as a tumor inhibitor as well as a tumor promoter. In the early stage of tumorigenesis, it prevents tumor initiation by the so-called “quality control mechanism” and suppresses cancer progression. For late-staged tumors that are exposed to stress, it acts as a vibrant process of degradation and recycling that promotes cancer by facilitating metastasis. Despite this dichotomy, the crucial role of autophagy is evident in cancer, and associated with mammalian targets of rapamycin (mTOR), p53, and Ras-derived major cancer networks. Irrespective of the controversy regarding autophagic manipulation, promotion and suppression of autophagy act as potential therapeutic targets in cancer treatment and may provide various anticancer therapies.
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- 2022
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23. Metal Dust Exposure Caused Changes in Blood Indices and Serum Proteins
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Rabia Mehmood and Nadeem Sheikh
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Background: Amongst the industrial hubs in Pakistan, Wazirabad is renowned for its cutlery industry. Cutlery industry generates heaps of multi-metallic dust in whetting units during the processing of stain fewer steel tools. This dust comprises certain potentially toxic and even carcinogenic constituents, thus pose a serious health threat to the workers involved in its processing. Laborers health and safety is something quite non-seriously considered in most of the developing countries, no different is Pakistan. Present exploration was aimed at searching for the differences, in blood profile and quantitative serum protein profile of a group of laborers in cutlery industry that are directly and regularly exposed to multi-metallic dust. Materials and Methods: After taking written consent from the participants, blood samples were drawn for hematological analysis and serum analysis. Hematological analysis was performed with hematological analyzer and serum was subjected to SDS gel electrophoresis for protein profiling. Results: Statistically significant changes were observed in the number of RBCs, MCV, HCT and RDW, whereas platelet count was decreased in experimental groups when compared to control group. Serum protein profiling using SDS-PAGE revealed the protein fractions ranging from 73 to 287 kDa. Densitometric analysis has shown changes in the serum proteins of the subjects exposed to metal dust. Conclusion: Chronic exposure to the metal dust induce changes in the hematological parameters as well as serum proteins. The industrial workers should ensure the use of industry specific personal safety equipment. Key words: Health hazard, Hematology, Metals, Metal dust, Proteins, SDS-PAGE.
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- 2022
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24. Effects of heterologous platelet-rich plasma on liver enzymes, oxidative stress biomarkers and pancreatic microarchitecture in diabetic mice
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Amin Arif, Muddasir H. Abbasi, Muhammad B. Khawar, and Nadeem Sheikh
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Multidisciplinary - Published
- 2023
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25. Diagnostic and therapeutic value of EVs in Lungs Diseases and Inflammation
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Muhammad Babar Khawar, Ali Afzal, Ume Habiba, Syeda Eisha Hamid, Muddasir Hassan Abbasi, Mussarat Rafiq, Nadeem Sheikh, Rimsha Abaidullah, Zoya Asif, and Tahaa Saeed
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Extracellular Vesicles (EVs) are membrane-derived messengers which have been playing an important role in the inflammation and pathogenesis of lung diseases. EVs contain varieties of DNA, RNA, and membrane receptors through which they work as a delivery system for bioactive molecules as well as intracellular communicators. EV signaling mediates tumor progression and metastasis. EVs are linked with many diseases and perform a diagnostic role in lung injury and inflammation so are used to diagnose the severity of diseases. EVs containing a variety of biomolecules communicate with the recipient cells during pathophysiological mechanisms thereby acquiring the attention of clinicians toward the diagnostic and therapeutic potential of EVs in different lung diseases. In this review, we summarise the role of EVs in inflammation with an emphasis on their potential as a novel candidate in the diagnostics and therapeutics of chronic obstructive pulmonary disease (COPD), asthma, and sarcoidosis.
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- 2023
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26. In Vivo Evaluation of Histopathological Alterations and Trace Metals Estimation of the Small Intestine in Bisphenol A-Intoxicated Rats
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Saira Ambreen, Tasleem Akhtar, Naila Hameed, Isbah Ashfaq, and Nadeem Sheikh
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Diseases of the digestive system. Gastroenterology ,RC799-869 - Abstract
BPA, a ubiquitously used plasticizer, has become one of the contaminants of emerging concern and causes many serious health implications in humans due to multiple exposure pathways. The current study was aimed at investigating the deformities of structures that arise by exposure of the small intestine to BPA through trace elements estimation of tissues as well as the study of serum profile. Two major groups of Wistar rats were established: one control group and the other experimental group, which was further divided into four groups based on dose (10 mg/kg/bodyweight and 25 mg/kg/bodyweight, respectively) and duration of exposure (6 and 12 weeks, respectively). Histological study of the small intestine showed the distorted structures in the experimental groups. The special staining performed illustrated the accumulation of calcium deposits in the small intestinal tissue in treated groups. Trace metals estimation showed a significant increase in the metallic content of sodium and iron and a decrease in the calcium content in the experimental groups (p=0.05). Serum profiling illustrated an increase in total iron-binding capacity and glucose levels and a decrease in the serum total iron level (p=0.05). An increased expression of a proinflammatory cytokine (IFN-α) was observed in the liver. From all these findings, it was inferred that BPA caused many structural alterations in the small intestinal tissue, which further affected its functioning. The calcium deposits seen through special staining affected the motility of the small intestine and caused its dysfunction. It was also induced from serum profiling that BPA affected the homeostasis of iron and glucose and caused its imbalance. Also, as BPA got absorbed from the small intestine and reached the liver via the blood stream, it caused hepatoxicity in the liver and led to increased inflammatory response by IFN-α against the toxicant.
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- 2019
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27. Assessing the Hepatotoxicity of Industrial Leachate; Histopathology and Heavy Metal Contents in Liver of Wistar Rats
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Muhammad Babar Khawar, Rabia Mehmood, Muddasir Hassan Abbasi, and Nadeem Sheikh
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Heavy metals ,Histopathology ,Leachate ,Toxicity ,Wastewater ,Medicine ,Biology (General) ,QH301-705.5 - Abstract
The process of paper production requires a huge quantity of water and energy and in turn contributes a number of effluents in the form of phenolics, toxic organic compounds and heavy metals in wastewater (leachate). The present investigation was aimed to assess the toxic effects of leachate on liver micro-architecture and heavy metal elements of the liver. Eighteen (18) healthy male Wistar rats (240 ± 10g) were selected and acclimatized prior to experimental treatment. These rats were randomly divided into three groups viz, Control group (received 4ml/ kg normal saline), Group 1 (4ml/ kg leachate) and Group 2 (4ml/ kg 1:10 diluted leachate). All the animals were dissected and liver tissues were collected and processed accordingly after 24 h of leachate treatment. High level of cadmium and chromium were found in Group 1 as compared to the control group upon liver metal contents analysis found out by flame atomic absorption spectrometer. A clear disruption of micro-architecture of the liver, congested sinusoids, damaged central vein, and perturbed morphology was observed in Group-1 as revealed by H & E staining. Moreover, loss of polarity, congestion, and disruption of hepatocytes and pronounced vacuolization in the cytoplasm was observed in Group 2 compared to control sections. On the basis of above findings, it can be concluded that paper industry leachate is highly toxic and its intraperitoneal injection results in hepatotoxicity that not only affects the hepatic micro-architecture but also results in perturbed liver metal contents. Therefore, proper treatment of such wastewater is required before its disposal.
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- 2018
28. CAR-T-Cell Therapy: Present Progress and Future strategies
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Nadeem Sheikh, Ayesha Majid, Adil Farooq, Muhammad Babar Khawar, Amna Riaz, and Muddasir Hassan Abbasi
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General Biochemistry, Genetics and Molecular Biology - Published
- 2022
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29. Novel functional polymorphism on PADI-4 gene and its association with arthritis onset
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Naz Fatima, Andleeb Batool, Muhammad Babar Khawar, Nadeem Sheikh, Rabia Mehmood, and Maryam Mukhtar Dr
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Genetics ,Genotyping ,QH301-705.5 ,Haplotype ,Citrullination ,Arthritis ,Single-nucleotide polymorphism ,Biology ,medicine.disease ,Osteoarthritis ,Genotype ,medicine ,PADI-4 gene polymorphism ,Gene polymorphism ,Rheumatoid arthritis ,Biology (General) ,Restriction fragment length polymorphism ,General Agricultural and Biological Sciences - Abstract
Background Citrullinated proteins formed by peptidyl arginine deiminases (PADIs) deimination of arginine residues in proteins are of particular interest in arthritis pathogenesis. Polymorphisms on the PADI-4 gene lead to the malfunctioning of PADIs leading to the onset of arthritis. Objective The present study was conducted to determine the polymorphisms on the PADI-4 gene and their association with rheumatoid arthritis (RA) as well as Osteoarthritis (OA). Methodology To achieve the above-mentioned objective a case-control study was conducted. Blood samples were collected from RA, OA, and control subjects. DNA was extracted from each blood sample by modified organic method and was quantified as well as qualified by DNA gel electrophoresis and Nanodrop. Patients were tested for rs874881, rs11203366, rs11203367, rs2240336, rs2240337, rs2240339, rs1748033 and rs2240340 polymorphic sites by amplifying targeted regions through PCR with site-specific primers. Genotyping was performed by Restriction Fragment Length Polymorphism and direct sequencing method. Mutations were identified by analyzing sequences on BioEdit software. Allelic, genetic, and multiple site analysis were performed by SHEsis and PLINK software. Change in the amino acid sequence was identified by MEGA 6.0 software. Results Polymorphisms were identified on all targeted polymorphic sites except rs2240337 in both RA and OA individuals. In addition, two novel mutations were also identified in exon 4 identified i-e SCV000804840: c.218T > C and SCV000807675: c.241G > T. All the SNPs except rs11203366 were found to be significantly associated with RA at an allelic level whereas all SNP’s have been significant risk factors in the onset of OA. At genotypic level rs874881, rs11203366, rs2240339, SCV000804840 and SCV000807675 were significantly associated to RA development whereas rs874881, rs11203366, rs11203367, rs2240339, SCV000804840 and SCV000807675 were genetic risk factors in OA onset. Haplotype analysis indicated that GACCACGCC and GACCACGCT were highly significant in disease development. Polymorphisms identified altered the functioning of PADIs by altering their amino acid sequence. Conclusion In conclusion, it was found that PADI-4 gene polymorphism was not only involved in the onset of RA but was also found to be a significant risk factor in OA onset.
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- 2022
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30. Figure S1 from Clonotypic Diversification of Intratumoral T Cells Following Sipuleucel-T Treatment in Prostate Cancer Subjects
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Lawrence Fong, James Trager, David Hamm, Jeff Pufnock, Simon Letarte, Todd DeVries, Li Zhang, Jason Cham, and Nadeem Sheikh
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Supplementary Figure S1 - Study schema
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- 2023
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31. Data from Clonotypic Diversification of Intratumoral T Cells Following Sipuleucel-T Treatment in Prostate Cancer Subjects
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Lawrence Fong, James Trager, David Hamm, Jeff Pufnock, Simon Letarte, Todd DeVries, Li Zhang, Jason Cham, and Nadeem Sheikh
- Abstract
Sipuleucel-T is an autologous cellular therapy for asymptomatic, or minimally symptomatic, metastatic castrate-resistant prostate cancer, designed to stimulate an immune response against prostate cancer. In a recent clinical trial (NCT00715104), we found that neoadjuvant sipuleucel-T increased the number of activated T cells within the tumor microenvironment. The current analysis examined whether sipuleucel-T altered adaptive T-cell responses by expanding pre-existing T cells or by recruiting new T cells to prostate tissue. Next-generation sequencing of the T-cell receptor (TCR) genes from blood or prostate tissue was used to quantitate and track T-cell clonotypes in these treated subjects with prostate cancer. At baseline, there was a significantly greater diversity of circulating TCR sequences in subjects with prostate cancer compared with healthy donors. Among healthy donors, circulating TCR sequence diversity remained unchanged over the same time interval. In contrast, sipuleucel-T treatment reduced circulating TCR sequence diversity versus baseline as measured by the Shannon index. Interestingly, sipuleucel-T treatment resulted in greater TCR sequence diversity in resected prostate tissue in sipuleucel-T–treated subjects versus tissue of nonsipuleucel-T–treated subjects with prostate cancer. Furthermore, sipuleucel-T increased TCR sequence commonality between blood and resected prostate tissue in treated versus untreated subjects with prostate cancer. The broadening of the TCR repertoire within the prostate tissue supports the hypothesis that sipuleucel-T treatment facilitates the recruitment of T cells into the prostate. Our results highlight the importance of assessing T-cell response to immunotherapy both in the periphery and in tumor tissue. Cancer Res; 76(13); 3711–8. ©2016 AACR.
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- 2023
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32. Emerging role of lipophagy in liver disorders
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Bismillah Nazeer, Muhammad Babar Khawar, Muhammad Usman Khalid, Syeda Eisha Hamid, Mussarat Rafiq, Muddasir Hassan Abbasi, Nadeem Sheikh, Ahmad Ali, Hooriya Fatima, and Sadia Ahmad
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Clinical Biochemistry ,Cell Biology ,General Medicine ,Molecular Biology - Published
- 2023
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33. Audiometry: A model-view-viewmodel (MVVM) application framework for hearing impairment diagnosis.
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Waseem Sheikh and Nadeem Sheikh
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- 2020
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34. A Decade of Mighty Lipophagy: What We Know and What Facts We Need to Know?
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Naila Naz, Rabia Mehmood, Muhammad Babar Khawar, Nadeem Sheikh, Mussarat Rafiq, and Muddasir Hassan Abbasi
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Metabolic Syndrome ,Aging ,Programmed cell death ,Cell signaling ,QH573-671 ,Autophagy ,Biological membrane ,Review Article ,Lipid Droplets ,Cell Biology ,General Medicine ,Biology ,Lipid Metabolism ,Biochemistry ,Cell biology ,Lipotoxicity ,Lipid droplet ,Animals ,Humans ,Obesity ,Cytology ,Homeostasis ,Function (biology) - Abstract
Lipids are integral cellular components that act as substrates for energy provision, signaling molecules, and essential constituents of biological membranes along with a variety of other biological functions. Despite their significance, lipid accumulation may result in lipotoxicity, impair autophagy, and lysosomal function that may lead to certain diseases and metabolic syndromes like obesity and even cell death. Therefore, these lipids are continuously recycled and redistributed by the process of selective autophagy specifically termed as lipophagy. This selective form of autophagy employs lysosomes for the maintenance of cellular lipid homeostasis. In this review, we have reviewed the current literature about how lipid droplets (LDs) are recruited towards lysosomes, cross-talk between a variety of autophagy receptors present on LD surface and lysosomes, and lipid hydrolysis by lysosomal enzymes. In addition to it, we have tried to answer most of the possible questions related to lipophagy regulation at different levels. Moreover, in the last part of this review, we have discussed some of the pathological states due to the accumulation of these LDs and their possible treatments under the light of currently available findings.
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- 2021
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35. A novel single nucleotide polymorphism in exon 3 of MYOC enhances the risk of glaucoma.
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Sabeen Nazir, Maryam Mukhtar, Maryam Shahnawaz, Shaima Farooqi, Naz Fatima, Rabia Mehmood, and Nadeem Sheikh
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Medicine ,Science - Abstract
Genetic polymorphismsof MYOCalter the myocilin protein,which leads to disruption of thenormal regulation of intraocular pressure (IOP) that ultimately causes glaucoma.Theaim of the present study was to identify the polymorphism in exon 3 of the MYOC gene of theglaucoma patients in Lahore, Pakistan. We conducted a case-control study with 100 patients and 100 controls subjects. We extracted DNA from blood samples,amplified the target DNA fragmentby PCR, and identifiedpolymorphisms through sequencing. We observed that the allelic and genotypic frequencies of rs74315341 and rs879255525 were associated with glaucoma in our patient population. The polymorphism atrs74315341 led to the substitutionof serine for arginine,whereas the polymorphism at rs879255525 led to the substitution ofasparagine for lysine. The haplotype TGAAGCCATTTC was associated with disease onset, whereas the haplotype GGAAGCCATTTC was protective against disease development. In conclusion, weidentified MYOC gene polymorphisms in susceptible regions that were associated withglaucoma onset among the Lahore patient population.This is the first report to identify a novel mutation in rs879255525 in exon 3 of the MYOC genethat is associated withglaucoma.
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- 2018
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36. An In Vivo Study on Intoxicating Effects of Nerium oleander Water Based Extract on Multiorgans of Wistar Rat
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Muddasir Hassan Abbasi, Sana Fatima, Muhammad Babar Khawar, Shah Jahan, and Nadeem Sheikh
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Diseases of the digestive system. Gastroenterology ,RC799-869 - Abstract
This study was aimed to find histological changes in the extrahepatic organs, hepatic iron deposition, and gene expression of some iron regulatory proteins in rats after sterile muscle abscess during the acute intoxication of Nerium oleander leaves decoction. 10 ml/kg of the leaves extract was injected intramuscularly in Wistar rats (200–225 g, n=4). Control animals received saline injection of matched volume. Animals were anesthetized and sacrificed after 3, 6, 12, and 24 h after administration of decoction. Lungs, kidney, spleen, and liver were extracted and processed for histopathological examination while portion of liver tissue was proceeded for iron regulatory gene expression quantification. Sections of all studied organs were found with signs of cellular dysfunction with infiltration of variety of leucocytes. In the lungs section at 3 h time point mononuclear cell infiltrates were observed while in alveolar tissue at 24 h time point dilation and even collapse in some of the alveoli were evident. In kidney sections distortion of renal tubules and epithelial cells with shrinkage of glomeruli was noted at all studied time points. In the splenic section of 12 h time point, degeneration, depopulation, and shrinkage of white pulp have been noted. Distension of the red pulp along with activation of splenic follicles was evident after 24 h onset of APR. Significant changes in the expression of acute phase cytokine and iron regulatory genes were noted. IL-6 and Hepc gene expression were strongly upregulated up to 12 h whereby Tf gene expression showed an early upregulation at 3 h time point followed by downregulation on later points while Hjv gene expression showed an overall downregulation at all study time points compared to control. It is concluded that inherent toxins present in the N. oleander can induce acute phase response and cause severe histological changes in the organs and marked changes in the regulation of iron regulatory proteins thus cannot be practiced routinely.
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- 2018
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37. Fagonia indica Repairs Hepatic Damage through Expression Regulation of Toll-Like Receptors in a Liver Injury Model
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Fareeha Azam, Nadeem Sheikh, Gibran Ali, and Asima Tayyeb
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Immunologic diseases. Allergy ,RC581-607 - Abstract
Fagonia indica is a traditionally used phytomedicine to cure hepatic ailments. However, efficient validation of its hepatoprotective effect and molecular mechanisms involved are not yet well established. Therefore, the present study was designed to evaluate the hepatoprotective activity of Fagonia indica and to understand the molecular mechanisms involved in the reversal of hepatic injury. The liver injury mouse model was established by thioacetamide followed by oral administration of plant extract. Serum biochemical and histological analyses were performed to assess the level of hepatic injury. Expression analysis of proinflammatory, hepatic, and immune regulatory genes was performed with RT-PCR. Results of serological and histological analyses described the restoration of normal liver function and architecture in mice treated with plant extract. In addition, altered expression of proinflammatory (IL-1β, IL-6, TNF-α, and TGF-β) and hepatic (krt-18 and albumin) markers further strengthens the liver injury reversal effects of Fagonia indica. Furthermore, a significant expression regulation of innate immunity components such as toll-like receptors 4 and 9 and MyD-88 was observed suggesting an immune regulatory role of the plant in curing liver injury. In conclusion, the current study not only proposes Fagonia indica, a strong hepatoprotective candidate, but also recommends an immune regulatory toll-like receptor pathway as an important therapeutic target in liver diseases.
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- 2018
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38. Gender linked negative consequences of 'Nigella sativa' seeds and 'Plantago ovata' husk on fibrosis in the energy-rich diet (ERD) induced nonalcoholic fatty liver disease (NAFLD)
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Afshan Syed Abbas, Mudassir Hassan Abbasi, Babar Khawar, Faiza Jabeen, Asia Shad, and Nadeem Sheikh
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Background: Nonalcoholic fatty liver disease (NAFLD) is a developing liver problem mainly linked with the consumption of an ‘energy-rich-diet (ERD) in Asian countries including both females and males. NAFLD is associated with fibrosis in advanced stages. Medicinal herbs are being used to cut down the excessive fat of the body conventionally. Therefore, the current study was aimed to evaluate the lipid lowering factor against ERD induced fibrosis. Materials and methods: 40 female (F) and 40 male (M) Rattus norvegicus, subdivided as four groups Groups 0, I, II and III according to their nutritional content. Group-0 received 100% rat chow and Group-I received ERD. Group-II and Group-III received ERD supplemented with 5% Nigella sativa seeds/Plantago. ovata husk per kg ERD, respectively. Results: Histopathological evaluation of the liver showed pericellular and portal and fibrosis in both F-I and F-II. Radial fibrosis was detected in the M-II group, and peri lobular as well as bridging fibrosis between portal triads in the M-III and F-III groups. Conclusion: In the light of the present findings, it is inferred that male livers were more susceptible to DRE-induced fibrosis. N. sativa seeds proved auspicious in minimizing fibrosis, whereas P. ovata pods caused advanced liver fibrosis with DRE.
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- 2022
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39. RUNX1 mutation and elevated FLT3 gene expression cooperates to induce inferior prognosis in cytogenetically normal acute myeloid leukemia patients
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N Hameed, Hosam Ali Baeshen, Rahat Abdul Rehman, Atia Rehman, Samy Sayed, Amjad Zafar, Ahmed Gaber, Asma Chaudhary, Zuhair M. Mohammedsaleh, Nadeem Sheikh, Zafar Iqbal, Walaa F. Alsanie, Tayyaba Saleem, Zawar Hussain, Samina Qamer, Alaa Alhazmi, Muhammad Absar, and Afia Muhammad Akram
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RUNX1 ,QH301-705.5 ,Mutant ,medicine.disease_cause ,chemistry.chemical_compound ,fluids and secretions ,hemic and lymphatic diseases ,medicine ,Biology (General) ,FLT3 ,Survival rate ,Mutation ,Acute myeloid leukemia ,business.industry ,Point mutation ,Myeloid leukemia ,hemic and immune systems ,Prognosis ,Haematopoiesis ,medicine.anatomical_structure ,chemistry ,embryonic structures ,Cancer research ,Original Article ,Bone marrow ,General Agricultural and Biological Sciences ,business ,Mutations - Abstract
Background Acute myeloid leukemia (AML) is a bone marrow malignancy having multiple molecular pathways driving its progress. In recent years, the main causes of AML considered all over the world are genetic variations in cancerous cells. The RUNX1 and FLT3 genes are necessary for the normal hematopoiesis and differentiation process of hematopoietic stem cells into mature blood cells, therefore they are the most common targets for point mutations resulting in AML. Methods We screened 32 CN-AML patients for FLT3-ITD (by Allele-specific PCR) and RUNX1 mutations (by Sanger sequencing). The FLT3 mRNA expression was assessed in all AML patients and its subgroups. Results Eight patients (25%) carried RUNX1 mutation (K83E) while three patients (9.37%) were found to have internal tandem duplications in FLT3 gene. The RUNX1 mutation data were correlated with clinical parameters and FLT3 gene expression profile. The RUNX1 mutations were observed to be significantly prevalent in older males. Moreover, RUNX1 and FLT3-mutated patients had lower complete remission rate, event-free survival rate, and lower overall survival rate than patients with wild-type RUNX1 and FLT3 gene. The RUNX1 and FLT3 mutant patients with up-regulated FLT3 gene expression showed even worse prognosis. Bradford Assay showed that protein concentration was down-regulated in RUNX1 and FLT3 mutants in comparison to RUNX1 and FLT3 wild-type groups. Conclusion This study constitutes the first report from Pakistan reporting significant molecular mutation analysis of RUNX1 and FLT3 genes including FLT3 expression evaluation with follow-up. This provides an insight that aforementioned mutations are markers of poor prognosis but the study with a large AML cohort will be useful to further investigate their role in disease biology of AML.
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- 2021
40. Effectiveness of SVR 12 in Hepatitis C Subjects Attending Tertiary Care Hospital in Lahore-Pakistan: an Observational Data
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Muhammad Khalil Ahmad Khan, Muhammad Babar Khawar, Nasir Yousaf, Sana Fatima, Nadeem Sheikh, Adil Farooq, and Muddasir Hassan Abbasi
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medicine.medical_specialty ,education.field_of_study ,Sofosbuvir ,business.industry ,Ribavirin ,Hepatitis C virus ,Population ,Hepatitis C ,Tertiary care hospital ,medicine.disease ,medicine.disease_cause ,chemistry.chemical_compound ,Pharmacotherapy ,chemistry ,Internal medicine ,medicine ,General Earth and Planetary Sciences ,Observational study ,business ,education ,General Environmental Science ,medicine.drug - Abstract
Introduction: In Pakistan, for the patients of Hepatitis C virus (HCV), Direct-Acting Antiviral (DAA) therapy for 12 weeks and 24 weeks had been reported to be highly efficacious for genotype 3. We currently carried out an observational study to predict the rate of efficacy of sofosbuvir and ribavirin in hepatitis C patients to establish concrete or authentic data on this combination of DAA for long-term treatment. Materials and Method: Among 2000 subjects who attended tertiary care unit in Lahore-Pakistan from November 2018 to February 2019, 1990 satisfied the criteria set for the present investigation i.e. SVR12 after being treated with sofosbuvir and ribavirin combination. Results: It was noted that genotype 3a were more common among all the subjects under observation with 50.65 % (1008/1990) in females and 49.35% (982/1990) in males. Overall efficacy analysis was found to be 95.4% (1900/1990) in patients while the moderate response was noted in elderly subjects including both genders (61-90 years). DAA responders (male: female percentages) shown the following stats; 66.63 (42/66):36.36 (24/66) in 11-20 years, 56.6(240/424):43.39 (184/424) in 21-30 years and 44.73(272/608):55.27(336/608) in 31-40 years. Conclusion: Collectively, this combinational drug therapy was observed to be successful among the Pakistani population. However, more comprehensive follow-up studies are needed on a larger pool of population nationwide to check only this combinational therapy (sofosbuvir and ribavirin) would be beneficial or not? Or next-generation DAA regimes would be the choice for the Pakistani population.
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- 2021
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41. PRDM16, LRP1 and TRPM8 genetic polymorphisms are risk factor for Pakistani migraine patients
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Maryam Mukhtar, Nadeem Sheikh, H. Maqbool, R. Zafar, Muddasir Hassan Abbasi, and Tayyaba Saleem
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medicine.medical_specialty ,Aura ,business.industry ,Variants ,Pakistani population ,Subgroup analysis ,Genome-wide association study ,Single-nucleotide polymorphism ,medicine.disease ,Migraine with aura ,Association ,Migraine ,Susceptibility ,Internal medicine ,medicine ,GWAS ,Original Article ,Risk factor ,medicine.symptom ,General Agricultural and Biological Sciences ,business ,Genetic association - Abstract
Background Migraine is a chronic neurovascular condition characterized by recurring attacks of pulsating headaches. Genome-wide association studies (GWAS) identified many potential loci associated with migraine. To check the association of polymorphisms of PRDM16 (rs2651899), LRP1 (rs11172113), and TRPM8 (rs10166942) with migraine, the first time a case-control study was conducted in understudied Pakistani population. Methods The study included 127 migraine patients (21 in migraine with aura and 106 with migraine without aura group) and 120 healthy control subjects from different areas of Punjab, Pakistan. Blood samples were collected from all the participants, and DNA was isolated from the lymphocytes by the modified organic method. Sanger's sequencing was done for PRDM16 (rs2651899), LRP1 (rs11172113), and TRPM8 (rs10166942) in all the samples to check the genotype. Logistic regression analysis was done using SPSS 20.0 to check the association of these SNPs with migraine susceptibility. Results We found statistically significant differences between case and control group for PRDM16 (rs2651899) at genotypic level (p
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- 2021
42. High-fat diet-induced splenic, hepatic, and skeletal muscle architecture damage: cellular and molecular players
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Tasleem Akhtar, Rabia Mehmood, Nadeem Sheikh, Tayyeba Batool, Muhammad Babar Khawar, Sania Nadeem, and Ambreen Asghar
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0301 basic medicine ,medicine.medical_specialty ,Necrosis ,business.industry ,Clinical Biochemistry ,Skeletal muscle ,Spleen ,Physical exercise ,Inflammation ,Cell Biology ,General Medicine ,03 medical and health sciences ,030104 developmental biology ,0302 clinical medicine ,medicine.anatomical_structure ,Endocrinology ,Immune system ,030220 oncology & carcinogenesis ,Hemosiderin ,Internal medicine ,Red pulp ,Medicine ,medicine.symptom ,business ,Molecular Biology - Abstract
The trend of consuming food high in calories, fat, and sugar with little nutritional value and reduced physical exercise has resulted in an alarming ratio of overweight and obese subjects worldwide. Low-grade chronic inflammation is the key feature of obesity that causes an increase in pro-inflammatory cytokines and decrease in anti-inflammatory cytokines in circulation. The current study was aimed to investigate the effect of high-fat diet on the architecture of spleen, liver, and skeletal muscle and changes in the expression of hepatic cytokines. Two groups of experimental rats were established, against control that were given different percentage of fats in their diet. After a period of sixteen weeks, rats were dissected and their organs were excised out and processed accordingly. Spleen sections of experimental groups, revealed increased recruitment of lymphocytes, sinusoidal dilatations, necrotic lymphocytes, increased ratio of white-to-red pulp, and hemosiderin and iron deposits in red pulp indicating immune system activation. Hepatic sections showed enlarged sinusoidal spaces, disruptive hepatocytes, necrosis and dilation of portal veins. Sections of skeletal muscle showed degenerating fibers, increased fat accumulation, and recruitment of macrophages. Elevated expression of IFN-γ and decreased expression of IFN-α and IFN-β cytokines verified the adverse effect of high-fat diet on immune system as well. Fats tend to accumulate in organs due to increased intake of fat-rich diet disturbing their normal function and histology. In addition, gene expression analysis of cytokines confirmed the effect of high-fat diet as an inflammatory agent.
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- 2021
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43. Mutational Analysis of Myoclonin1 Gene in Pakistani Juvenile Myoclonic Epilepsy Patients
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Saira Kainat Suqaina, Tayyaba Saleem, Nadeem Sheikh, Maryam Mukhtar, Mavra Irfan, and Arooj Mustafa
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Male ,0301 basic medicine ,Article Subject ,Adolescent ,DNA Mutational Analysis ,Population ,Locus (genetics) ,030105 genetics & heredity ,Biology ,General Biochemistry, Genetics and Molecular Biology ,03 medical and health sciences ,Epilepsy ,Exon ,0302 clinical medicine ,Genotype ,medicine ,Humans ,Missense mutation ,Pakistan ,education ,Genetics ,education.field_of_study ,Base Sequence ,General Immunology and Microbiology ,Genetic heterogeneity ,Calcium-Binding Proteins ,Myoclonic Epilepsy, Juvenile ,Exons ,General Medicine ,medicine.disease ,Mutation ,Medicine ,Female ,Juvenile myoclonic epilepsy ,030217 neurology & neurosurgery ,Research Article - Abstract
Juvenile myoclonic epilepsy (JME) is the most prevalent and genetically heterogeneous form of epilepsy and accounts for 10–30% of all the cases worldwide. Ef-hand domain- (c-terminal-) containing protein 1 (EFHC1) encodes for a nonion channel protein and mutations in this gene have been extensively reported in different populations to play a causative role in JME. Linkage between JME and 6p11-12 locus has already been confirmed in Mexican and Dutch families. A case-control study was conducted on Pakistani JME patients for the first time, aimed at finding out EFHC1 mutations that have been reported in different populations. For this purpose, 66 clinically diagnosed JME patients and 108 control subjects were included in the study. Blood samples were collected from all the participants, and DNA was isolated from the lymphocytes by the modified organic method. Total 3 exons of EFHC1, harboring extensively reported mutations, were selected for genotypic analysis. We identified three heterozygous variants, R159W, V460A, P436P, and one insertion in the current study. V460A, an uncommon variant identified herein, has recently been reported in public databases in an unphenotyped American individual. This missense variant was found in 3 Pakistani JME patients from 2 unrelated families. However, in silico analysis showed that V460A may possibly be a neutral variant. While the absence of a majority of previously reported mutations in our population suggests that most of the mutations of EFHC1 are confined to particular ethnicities and are not evenly distributed across the world. However, to imply the causation, the whole gene and larger number of JME patients should be screened in this understudied population.
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- 2021
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44. Effect of heterologous platelet-rich plasma (PRP) on liver and modulation of glucose metabolism and Wnt signaling pathways in diabetic mice
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Amin Arif, Adil Farooq, Muddasir Hassan Abbasi, Muhammad Babar Khawar, Tasleem Akhter, Humaira Allay Ali, Mehreen Anjum, Rabia Mahmood, Tayyaba Saleem, and Nadeem Sheikh
- Abstract
Platelet-rich plasma (PRP) is proven a cost-effective therapeutic choice for different ailments. The current study was designed to highlight the effects of heterologous platelet-rich plasma (PRP) on deteriorated hepatic tissues and impaired glucose metabolism in alloxan-induced diabetic mice. A total of thirty (30) male mice were selected and grouped as control (CG), PRP group (PG), diabetic group (DG), treated group 1 (T1G), and treated group 2 (T2G). PG was given a subcutaneous dose of PRP (0.5 ml/kg body weight) twice a week for four weeks. DG, T1G, and T2G were first given a single dose of alloxan intraperitoneally (150 mg/kg) to induce diabetes. PRP (0.5 ml/kg body weight) was given twice a week to T1G and T2G for two and four weeks respectively. After four weeks, all the mice were sacrificed to excise liver for histological observations and gene expression analysis. Hepatic histo-morphological analysis revealed ballooning of hepatocytes, dilatation of sinusoids, and collagen deposition in the alloxan-induced diabetic group (DG) and it was significantly reduced in both T1G and T2G. Additionally, a significant change in the expression of several hepatic genes was observed. Fbp1, G6pc, and Pklr showed an upregulation while a downregulation was detected in the expression of Pck1 in DG. A significant restoration was observed in Fbp1, and G6pc after PRP treatment but no change was observed in Pklr expression. Genes of glycolytic pathway, Hk1 and Gck, were downregulated significantly in DG compared to CG and PRP treatment restore the expression in both treated groups T1G and T2G. Moreover, Wnt2, Wnt4, and Wnt9a genes of the Wnt signaling pathway were also upregulated in DG, conversely, downregulate in T1G and T2G. No significant change in expression of Wnt5b and Wnt9b was observed in DG compared to control. Current study revealed that PRP anticipates a reduction in glucose production and glucose consumption by ameliorating hepatic tissue and modulating the glucose metabolism. So, it may use as one of the adjunctive therapies to treat T2DM in future but further more detailed investigations are suggested.
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- 2022
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45. Prebiotics: A Novel Approach to Treat Hepatocellular Carcinoma
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Naz Fatima, Tasleem Akhtar, and Nadeem Sheikh
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Diseases of the digestive system. Gastroenterology ,RC799-869 - Abstract
Hepatocellular carcinoma is one of the fatal malignancies and is considered as the third leading cause of death. Mutations, genetic modifications, dietary aflatoxins, or impairments in the regulation of oncogenic pathways may bring about liver cancer. An effective barrier against hepatotoxins is offered by gut-liver axis as a change in gut permeability and expanded translocation of lipopolysaccharides triggers the activation of Toll-like receptors which stimulate the process of hepatocarcinogenesis. Prebiotics, nondigestible oligosaccharides, have a pivotal role to play when it comes to inducing an antitumor effect. A healthy gut flora balance is imperative to downregulation of inflammatory cytokines and reducing lipopolysaccharides induced endotoxemia, thus inducing the antitumor effect.
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- 2017
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46. Corrigendum to 'Prebiotics: A Novel Approach to Treat Hepatocellular Carcinoma'
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Naz Fatima, Tasleem Akhtar, and Nadeem Sheikh
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Diseases of the digestive system. Gastroenterology ,RC799-869 - Published
- 2017
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47. A Fractal-Fractional Model for the MHD Flow of Casson Fluid in a Channel
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Muhammad Jamil, Kottakkaran Sooppy Nisar, Ilyas Khan, Nadeem Sheikh, Thabet Abdeljawad, and Dennis Ling Chuan Ching
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Biomaterials ,Fractal ,Flow (mathematics) ,Mechanics of Materials ,Modeling and Simulation ,Casson fluid ,Fractional model ,Mechanics ,Electrical and Electronic Engineering ,Magnetohydrodynamics ,Computer Science Applications ,Communication channel ,Mathematics - Published
- 2021
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48. Analysis of Silver Nanoparticles in Engine Oil: Atangana–Baleanu Fractional Model
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Farhad Ali, Ilyas Khan, Saqib Murtaza, Kottakkaran Sooppy Nisar, and Nadeem Sheikh
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Biomaterials ,Materials science ,Chemical engineering ,Mechanics of Materials ,Modeling and Simulation ,Fractional model ,Electrical and Electronic Engineering ,Silver nanoparticle ,Computer Science Applications - Published
- 2021
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49. Peripheral Expression of CXCL10 Gene in Chronic Hepatitis C Patients Treated with Sofosbuvir, Daclatasvir, and Ribavirin
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Shazia Rafique, Maira Afzal, Muhammad Idrees, Amjad Ali, and Nadeem Sheikh
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Daclatasvir ,Sofosbuvir ,business.industry ,animal diseases ,Ribavirin ,Hepatitis C virus ,Immunology ,chemical and pharmacologic phenomena ,macromolecular substances ,Cell Biology ,biochemical phenomena, metabolism, and nutrition ,medicine.disease_cause ,Virology ,chemistry.chemical_compound ,Immune system ,chemistry ,medicine ,bacteria ,CXCL10 ,business ,Gene ,Pathogen ,medicine.drug - Abstract
Hepatitis C virus (HCV) causes persistent infection and invades host's innate and adaptive immune systems. During the eradication of this pathogen, the components of immune system may cause bystand...
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- 2020
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50. Quercetin ameliorates thioacetamide-induced hepatic fibrosis and oxidative stress by antagonizing the Hedgehog signaling pathway
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Andleeb Aslam, Nadeem Sheikh, Muhammad Shahzad, Ghazala Saeed, Naz Fatima, and Tasleem Akhtar
- Subjects
Inflammation ,Liver Cirrhosis ,Male ,Cell Biology ,Thioacetamide ,Biochemistry ,Antioxidants ,Rats ,Oxidative Stress ,Liver ,Animals ,Hedgehog Proteins ,Quercetin ,Rats, Wistar ,Molecular Biology ,Silymarin - Abstract
The Hedgehog (Hh) pathway has emerged as a potential target for effectual hepatic repair based on convincing clinical and preclinical evidence that proves its significance in regulating hepatic damage. The purpose of this study is to probe the effect of quercetin on liver fibrosis through the modulation of the Hh pathway. Healthy male Wistar rats were divided into four groups (n = 10). The control group was treated with saline, rats in the remaining three groups received twice a week intoxication with intraperitoneal injections of thioacetamide (200 mg/kg) for the induction of hepatic fibrosis for 6 weeks. After 28 days of quercetin and silymarin treatment, histological changes, serum biochemical index, antioxidant enzyme activity, key mediators of Hh pathway and inflammation were analyzed. Serological analysis showed statistically improved cholesterol, H.D.L-Cholesterol, and L.D.L-Cholesterol in the treatment groups. Superoxide dismutase and glutathione levels were found to be increased after the treatment with quercetin and silymarin. mRNA expression of important mediators of the Hh signaling, and inflammation including Shh, Ihh, Ptch-1, Smo, Hhip, Gli-3, TNF-α, NFκ-β, and Socs-3 were significantly downregulated after the use of quercetin and silymarin. Quercetin also minimized the thioacetamide-induced histopathological changes, as confirmed by a lower degree of hepatic lobule degeneration, the intralobular occurrence of inflammatory cells, and a lower degree of hepatocytic necrosis. Sudan Black B staining showed remarked lipids improvements in the treatment groups. Taken together, these findings demonstrate that quercetin could ameliorate hepatic fibrosis by antagonizing the hedgehog pathway and also suggest the hedgehog pathway as a potential therapeutic target for the treatment of liver fibrosis.
- Published
- 2022
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