Publications by authors named "Umar Nishan"

SARS-CoV-2 led to deadly and adverse impacts in the recent outbreak in 2019 due to the lack of effective treatments. The current study aimed to evaluate the potential of antiviral compounds found in Asian medicinal plants for the inhibition of SARS-CoV-2's main protease and spike glycoprotein. An in-house library of 335 antiviral natural products was prepared from the selected medicinal plants.

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The versatile bacterium Kytococcus schroeteri is known for producing putative secondary metabolites. These include antimicrobials and other therapeutically significant compounds. The emergence of antibiotic-resistant pathogens has necessitated the exploration of possible sources for novel drug candidates.

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  • * The study identified PD-L1 expression as a potential prognostic biomarker by examining tissue samples from 86 pancreatic cancer patients, linking PD-L1 levels to tumor characteristics and overall survival.
  • * High levels of PD-L1 were correlated with increased disease aggression and shorter survival times, suggesting that PD-L1 could play a significant role in the diagnosis and treatment of pancreatic cancer.
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The excessive accumulation of heavy metals has adverse effects on the human body. Here, magnetic iron oxide-impregnated carboxymethyl-β-cyclodextrin was synthesized. The synthesized material was employed as a magnetic solid-phase extracting adsorbent for specific heavy metals like lead (Pb), nickel (Ni), copper (Cu), and cobalt (Co).

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Oz virus (OZV) belongs to the Orthomyxoviridae family which includes viruses with a negative-sense, single-stranded, and segmented RNA genome. OZV is a zoonotic pathogen, particularly since the virus can cause deadly illness when injected intracerebrally into nursing mice. OZV is an emerging pathogen with the potential to spark a pandemic as there is no preventive and licensed treatment against this virus.

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Uric acid is the end product of purine metabolism and is a key biomarker for various diseases. Under normal conditions, there is a balance between its production and excretion. Its higher concentration can cause inflammation and severe pain, which makes it necessary to monitor its level for the diagnosis, management, and treatment of various pathological conditions.

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  • Blastomyces dermatitidis is a dangerous fungus that can cause life-threatening infections, particularly affecting the lungs and other body systems, yet no vaccines are currently approved to prevent it.
  • A new peptide-based vaccine was developed using innovative techniques that involves analyzing the fungus's genome to identify effective targets and create multi-epitope constructs that enhance immune response.
  • The vaccine demonstrated promising properties through simulations, showing a strong interaction with the human immune receptor and predicted significant immune responses, paving the way for future validation and potential use.
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  • COVID-19 is the ninth deadliest pandemic and has severely affected healthcare and financial systems, highlighting the urgent need for new treatments! * Researchers examined 404 alkaloids from 12 medicinal plants to find potential antiviral agents targeting two crucial SARS-CoV-2 proteins: the main protease and spike glycoprotein! * Twelve alkaloids were identified with significant dual inhibitory potential, with ergosine and evodiamide C showing promising stability and binding interactions, while adouetine Y, despite high docking scores, had a less favorable binding profile!
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is the etiological agent of the disease opisthorchiasis and related cholangiocarcinoma (CCA). It infects fish-eating mammals and more than 10 million people in Southeast Asia suffered from opisthorchiasis with a high fatality rate. The only effective drug against this parasite is Praziquantel, which has significant side effects.

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  • Ascorbic acid is essential for the body, promoting collagen health, but its imbalance can lead to diseases like scurvy and cardiovascular issues.
  • A new biosensor using iron-doped hydroxyapatite was developed for cost-effective, real-time colorimetric detection of ascorbic acid, taking advantage of the material's large surface area and catalytic properties.
  • The sensor shows a linear detection range from 0.6 to 56 μM with rapid response time (75 seconds) and can measure ascorbic acid levels in physiological solutions effectively.
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SARS-CoV-2 infection affects and modulates serum as well as hematological parameters. However, whether it modifies these parameters in the existing disease conditions, which help in the erection of specific treatments for the disease, is under investigation. Here, we aimed to determine whether serum and hematological parameters alteration in various diseases, diabetes mellitus (DM), hypertension (HTN), ischemic heart disease (IHD) and myocardial infarction (MI) conditions correlate and signal SARS-CoV-2 infection, which could be used as a rapid diagnosis tool for SARS-CoV-2 infection in disease conditions.

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In this study, green synthesis of gold nanoparticles (AuNPs) using aqueous extract from resin (HCR) is reported. The successful formation, functional group involvement, size, and morphology of the subject resin mediated gold nanoparticles (HCRAuNPs) were confirmed by Ultra Violet-Visible (UV-vis) spectroscopy, Fourier-Transform Infrared spectroscopy (FTIR), and Transmission Electron Microscopy (TEM) techniques. Stable and high yield of HCRAuNPs was formed in 1:15 (aqueous solution: salt solution) reacted in sunlight as indicated by the visual colour change and appearance of surface Plasmon resonance (SPR) at 560 nm.

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Dopamine is one of the most important neurotransmitters and plays a crucial role in various neurological, renal, and cardiovascular systems. However, the abnormal levels of dopamine mainly point to Parkinson's, Alzheimer's, cardiovascular diseases, etc. Hydroxyapatite (HAp), owing to its catalytic nature, nanoporous structure, easy synthesis, and biocompatibility, is a promising matrix material.

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Phosphodiesterases (PDEs) are vital in signal transduction, specifically by hydrolyzing cAMP and cGMP. Within the PDE family, PDE10A is notable for its prominence in the striatum and its regulatory function over neurotransmitters in medium-spiny neurons. Given the dopamine deficiency in Parkinson's disease (PD) that affects striatal pathways, PDE10A inhibitors could offer therapeutic benefits by modulating D1 and D2 receptor signaling.

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Yersinia pestis, the causative agent of plague, is a gram-negative bacterium that can be fatal if not treated properly. Three types of plague are currently known: bubonic, septicemic, and pneumonic plague, among which the fatality rate of septicemic and pneumonic plague is very high. Bubonic plague can be treated, but only if antibiotics are used at the initial stage of the infection.

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Uric acid (UA) is a significant indicator of human health because it is linked to several diseases, including renal failure, kidney stones, arthritis, and gout. Uric acid buildup in the joints is the source of chronic and painful diseases. When UA is present in large quantities, it causes tissue injury in the joints that are afflicted.

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Hydrogen peroxide (HO) is one of the main byproducts of most enzymatic reactions, and its detection is very important in disease conditions. Due to its essential role in healthcare, the food industry, and environmental research, accurate HO determination is a prerequisite. In the present work, Morus nigra zinc oxide (ZnO) nanoparticles (NPs) were synthesized by the use of Trigonella foenum extract via a hydrothermal process.

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Severe Acute Respiratory Syndrome Corona Virus (SARS-CoV-2) is the causative agent of COVID-19 pandemic, which has resulted in global fatalities since late December 2019. Alkaloids play a significant role in drug design for various antiviral diseases, which makes them viable candidates for treating COVID-19. To identify potential antiviral agents, 102 known alkaloids were subjected to docking studies against the two key targets of SARS-CoV-2, namely the spike glycoprotein and main protease.

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A novel biomimetic dual layered keratin/hydroxyapatite (keratin/HA) scaffold was designed using iterative freeze-drying technique. The prepared scaffolds were studied using several analytical techniques to better understand the biological, structural, and mechanical properties. The developed multilayered, interconnected, porous keratin scaffold with different hydroxyapatite (HA) content in the outer and inner layer, mimics the inherent gradient structure of alveolar bone.

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Tuberculosis (TB), an infectious disease caused by multi-drug resistant (Mtb), has been a global health concern. Mtb affects over a third of the world's population, causing two million deaths annually due to its dormancy and propensity to spread infection during this period. Resuscitation-promoting factor B (RpfB) plays a pivotal role in the growth of Mtb during dormant periods, making it a critical target for eliminating Mtb and curing TB.

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Ascorbic acid is a vital biomolecule for human beings. When the body's level of ascorbic acid is abnormal, it can lead to a number of illnesses. Its appropriate concentration is necessary for the oxidation of prostaglandins and cyclic adenosine monophosphate, the production of dopamine, norepinephrine, epinephrine, and carnitine, and the expansion and durability of the collagen triple helix in humans.

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The Monkeypox virus (MPXV), an orthopox virus, is responsible for monkeypox in humans, a zoonotic disease similar to smallpox. This infection first appeared in the 1970s in humans and then in 2003, after which it kept on spreading all around the world. To date, various antivirals have been used to cure this disease, but now, MPXV has developed resistance against these, thus increasing the need for an alternative cure for this deadly disease.

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Primary Amoebic Meningoencephalitis (PAM), a severe lethal brain disease, is caused by a parasite, , also known as the "brain-eating amoeba". The chances of a patient's recovery after being affected by this parasite are very low. Only 5% of people are known to survive this life-threatening infection.

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