Nisar Ahmad

ORCID: 0000-0003-3299-3409
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About
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Research Areas
  • Plant tissue culture and regeneration
  • Essential Oils and Antimicrobial Activity
  • Nanoparticles: synthesis and applications
  • Atomic and Molecular Physics
  • Medicinal Plants and Neuroprotection
  • Light effects on plants
  • Biochemical Analysis and Sensing Techniques
  • Plant Molecular Biology Research
  • Sperm and Testicular Function
  • Phytochemistry and Biological Activities
  • Moringa oleifera research and applications
  • Ethnobotanical and Medicinal Plants Studies
  • Natural product bioactivities and synthesis
  • Advanced Chemical Physics Studies
  • Piperaceae Chemical and Biological Studies
  • Reproductive Physiology in Livestock
  • Phytochemicals and Antioxidant Activities
  • Hormonal and reproductive studies
  • Neuroendocrine regulation and behavior
  • Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
  • Epigenetics and DNA Methylation
  • Radioactivity and Radon Measurements
  • Heavy metals in environment
  • Mass Spectrometry Techniques and Applications
  • Reproductive Biology and Fertility

Kohat University of Science and Technology
2009-2025

University of Science and Technology of China
2021-2025

University of Swat
2015-2024

Government of Khyber Pakhtunkhwa
2024

Dalian Medical University
2019-2024

University of Karachi
2024

Dalian University
2024

University of Peshawar
2024

International Center for Chemical and Biological Sciences
2024

University of Veterinary and Animal Sciences
2023

The main objective of the current study is to investigate potential Carica papaya leaves extracts against Dengue fever in 45 year old patient bitten by carrier mosquitoes. For treatment extract was prepared water. 25 mL aqueous C. administered infected with twice daily i.e. morning and evening for five consecutive days. Before administration blood samples from were analyzed. Platelets count (PLT), White Blood Cells (WBC) Neutrophils (NEUT) decreased 176 × 103/μL, 8.10 84.0% 55 3.7 103/μL...

10.1016/s2221-1691(11)60055-5 article EN Asian Pacific Journal of Tropical Biomedicine 2011-08-01

Abstract Misuse of antibiotics leads to the worldwide spread antibiotic resistance, which motivates scientists create new antibiotics. The recurring UTI due antibiotics-resistant microorganism’s challenges globally. biogenic nanoparticles have potential meet escalating requirements novel antimicrobial agents. green synthesis (NPs) gained more attention their reliable applications against resistant microbes. current study evaluates ZnO NPs Mentha piperata extract pathogens urinary tract...

10.1038/s41598-023-41502-w article EN cc-by Scientific Reports 2023-09-11

The silver nanoparticles (AgNPs) were synthesized via green synthesis approach using Euporbia serpens Kunth aqueous extract. AgNPs characterized by UV-visible spectroscopy and Furrier Transformer Infra-Red to justify the reduction stabilization of from its precursors. characteristic absorption peak was observed at 420 nm in spectrum. SEM TEM analysis demonstrated spherical shape with particle sizes ranging 30 80 nm. FTIR transmission bands 2920 cm-1, 1639 1410 3290 1085 cm-1 attributed C-H,...

10.1155/2022/5562849 article EN cc-by BioMed Research International 2022-01-10

Galectins are a growing family of animal lectins with common consensus sequences that bind β-Gal and LacNAc residues. There at present 14 members the galectin family; however, certain galectins possess different structures as well biological properties. Galectin-1 is dimer two homologous carbohydrate recognition domains (CRDs) possesses apoptotic proinvasive activities. Galectin-3 consists C-terminal CRD an N-terminal nonlectin domain implicated in oligomerization protein often associated...

10.1093/glycob/cwh095 article EN Glycobiology 2004-05-12

Mentha species are used in every day life various food items. These produce valuable secondary metabolites that scavenge toxic free radicals. Toxic radicals can cause different diseases the human body. In present study radical scavenging potential (1,1-diphenyl-2-picrylhydrazyl activity) nine were investigated to evaluate and explore new sources for natural antioxidants. The activity was performed after time intervals with incubation period of 30 minutes. methanolic extracts revealed...

10.1177/0748233711407238 article EN Toxicology and Industrial Health 2011-06-06

Stress is one of the important factors that directly or indirectly affects plant architecture, biochemical pathways, and growth development. Melatonin (MEL) an stress hormone; however, exogenous addition melatonin to culture media stimulates defense mechanism releases higher quantities secondary metabolites. In this study, submerged adventitious root cultures (SARCs) diabetically

10.1021/acsomega.3c07404 article EN cc-by-nc-nd ACS Omega 2024-01-26

Abstract The growing population and the rise in urbanization have made managing water a critical concern around world recent years. Globally, flooding is one of most devastating natural disasters. Flood risk mitigation relies heavily on accurate consistent streamflow forecasts. Pakistan Upper Indus Basin (UIB) vulnerable to flooding. Floods become more frequent decades. UIB can be divided into sub-regions due its landscape variability, collective impact prominent Massam region. hydrological...

10.1007/s40899-024-01048-9 article EN cc-by Sustainable Water Resources Management 2024-03-05

Binding of a series sialylated and non-sialylated cell surface carbohydrates to bovine heart galectin-1, recombinant murine galectin-3, human galectin-7 was investigated by isothermal titration microcalori metry (ITC) hemagglutination inhibition measurements. Galectin-7 shows nearly equal affinities for lactose Galbeta(1–4)GlcNAc (LacNAc-II). Galectin-7, however, displays six- 11-fold weaker affinity LacNAc-II compared with galectins-1 -3, respectively. The containing oligosaccharides is...

10.1139/v02-162 article EN Canadian Journal of Chemistry 2002-08-01

Stevia rebaudiana (Bert.) is an emerging sugar alternative and anti-diabetic plant in Pakistan. That why people did not know the exact time of propagation. The main objective present study was to establish feasible propagation methods for healthy biomass production. In study, seed germination, stem cuttings micropropagation were investigated higher productivity. Fresh seeds showed better germination (25.51–40%) but lost viability after a few days storage. order improve percentage, irradiated...

10.1016/j.sjbs.2014.02.005 article EN cc-by-nc-nd Saudi Journal of Biological Sciences 2014-03-05

1. The formation of androst-16-enes from [4−14C]progesterone has been investigated with long-term incubations and short-term kinetic studies. After 4hr., 1·7 10·3% respectively 3α- 3β-hydroxy-5α-androst-16-enes were formed in boar testis minces, but much smaller yields obtained adrenal. Both tissues small quantities androsta-4,16-dien-3-one. 2. amounts androst-4-ene-3,17-dione testosterone isolated small, suggesting that androst-16-ene may occur preferentially the testis. 3. In absence...

10.1042/bj1080233 article EN Biochemical Journal 1968-06-01

Nanotechnology is one of the advance technologies that almost found implications in every field science. The importance due to unique properties nanoparticles. In this study, bimetallic alloys copper (Cu) and gold (Au) were tested submerge root cultures Stevia rebaudiana for production biomass secondary metabolites. A known amount inoculum roots submerged liquid Murashige Skoog medium containing combination naphthalene acetic acid (NAA; 0.5 mg l-1) different ratios nanoparticles (NPs). NAA...

10.1049/iet-nbt.2017.0093 article EN IET Nanobiotechnology 2018-02-22

In current study, the effect of gibberellic acid was tested for production biomass, polyphenolics and Steviol glycosides in adventitious root cultures Stevia rebaudiana. Adventitious were induced from roots vitro grown plantlets on Murashige Skoog (MS) medium containing combination (GA3; 0.5, 1.0, 1.5 2.0 mg/L) naphthalene acetic (NAA; 0.5 mg/L). Initially, a known mass inoculum shifted into suspension media augmented with various GA3 concentrations. The growth behavior recorded every 3 days...

10.3390/plants9040420 article EN cc-by Plants 2020-03-30
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