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result(s) for
"Mohammedsaleh, Zuhair M."
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Antimicrobial and In Vitro Cytotoxic Efficacy of Biogenic Silver Nanoparticles (Ag-NPs) Fabricated by Callus Extract of Solanum incanum L
by
Lashin, Islam
,
Fouda, Amr
,
Azab, Ehab
in
2,4-D
,
Anti-Bacterial Agents - chemistry
,
Anti-Bacterial Agents - pharmacology
2021
The in vitro callus induction of Solanum incanum L. was executed on MS medium supplemented with different concentrations of auxin and cytokinin utilizing petioles and explants of leaves. The highest significant fresh weights from petioles and leaf explants were 4.68 and 5.13 g/jar for the medium supplemented with1.0 mg L−1 BA and 1.0 mg L−1 2,4-D. The callus extract of the leaves was used for the green synthesis of silver nanoparticles (Ag-NPs). Analytical methods used for Ag-NPs characterization were UV-vis spectroscopy, Fourier Transform Infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and Transmission Electron Microscopy (TEM). Spherical, crystallographic Ag-NPs with sizes ranging from 15 to 60nm were successfully formed. The FT-IR spectra exhibited the role of the metabolites involved in callus extract in reducing and capping Ag-NPs. The biological activities of Ag-NPs were dose-dependent. The MIC value for Staphylococcus aureus, Bacillus subtilis, and Escherichia coli was 12.5 µg mL−1, while it was 6.25 µg mL−1 for Klebsiella pneumoniae, Pseudomonas aeruginosa, and Candida albicans. The highest inhibition of phytopathogenic fungi Alternaria alternata, Fusarium oxysporum, Aspergillus niger, and Pythium ultimum was 76.3 ± 3.7, 88.9 ± 4.1, 67.8 ± 2.1, and 76.4 ± 1.0%, respectively at 200 µg mL−1. Moreover, green synthesized Ag-NPs showed cytotoxic efficacy against cancerous cell lines HepG2, MCF-7 and normal Vero cell line with IC50 values of 21.76 ± 0.56, 50.19 ± 1.71, and 129.9 ± 0.94 µg mL−1, respectively.
Journal Article
Minor to Moderate Side Effects of Pfizer-BioNTech COVID-19 Vaccine Among Saudi Residents: A Retrospective Cross-Sectional Study
by
Ali, Soad S
,
Sindi, Nariman
,
Alghamdi, Badrah S
in
Analysis
,
Bell's palsy
,
Complications and side effects
2021
The Pfizer-BioNTech COVID-19 vaccine has recently received emergency approval from the US FDA. The mRNA technology was used to manufacture the Pfizer vaccine; however, as a pioneering technology that has never been used in the manufacture of vaccines, many people have concerns about the vaccine's side effects. Thus, the current study aimed to track the short-term side effects of the vaccine.
The information in this study was gathered by a Google Form-questionnaire (online survey). The results included the responses of 455 individuals, all of whom are Saudi Arabia inhabitants. Adverse effects of the vaccine were reported after the first and the second doses.
The most common symptoms were injection site pain, headaches, flu-like symptoms, fever, and tiredness. Less common side effects were a fast heartbeat, whole body aches, difficulty breathing, joint pain, chills, and drowsiness. Rare side effects include Bell's palsy and lymph nodes swelling and tenderness. Flu-like symptoms were more common among those under 60 years of age, while injection site pain was more frequent among recipients who were 60 years and older. The study revealed a significant increase in the number of females who suffered from the vaccine side effects compared to males. Difficulty of breathing was more reported among recipients who had been previously infected with the coronavirus compared to those who had not been previously infected.
Most of the side effects reported in this study were consistent with Pfizer's fact sheet for recipients and caregivers. Further studies are required to determine the long-term side effects.
Journal Article
Synthesis, characterisation and evaluation of polyethylene glycol–β-cyclodextrin–curcumin–zinc oxide nanoparticles for mosquitocidal, antibacterial and anticancer applications
by
Panneerselvam, Chellasamy
,
Srinivasan, Manoj Kumar
,
Alasmari, Abdulrahman
in
631/154
,
631/326
,
631/45
2026
To synthesise and characterise polyethylene glycol–β-cyclodextrin–curcumin–zinc oxide nanoparticles (PEG–Beta-Cur–ZnO NPs) and evaluate their stability, anti-mosquitocidal, antibacterial, and anticancer activities for potential biomedical and vector-control applications. Characterisation was performed using UV–Vis spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), and Transmission Electron Microscopy (TEM). Stability was assessed over time and pH ranges. Biological activity was evaluated through anti-malarial larval toxicity assays, adult mosquito longevity and fecundity studies, antibacterial assays against
Escherichia coli
and
Staphylococcus aureus
, and anticancer tests on HeLa cells measuring ROS generation, cell viability, DNA damage, and mitochondrial membrane potential. UV–Vis spectra confirmed successful functionalization with peak shifts to 423 nm. Stability studies showed time-limited dispersion (up to ~ 90 min) but improved stability under acidic conditions. FTIR revealed characteristic O–H, C=O, and Zn–O bands, confirming conjugation. XRD analysis indicated a preserved hexagonal wurtzite structure with high crystallinity. TEM imaging showed quasi-spherical morphology (76 nm). In larval assays, PEG–Beta–Cur–ZnO NPs achieved near-complete mortality at lower doses compared to free curcumin, while adult mosquitoes exhibited reduced lifespan and fecundity. Histopathology confirmed severe midgut damage in treated larvae. Antibacterial testing demonstrated superior inhibition zones and elevated ROS generation with PEG–Beta–Cur–ZnO NPs, indicating enhanced bacterial killing. In HeLa cells, the formulation induced significant ROS production, increased cell death, DNA fragmentation, and mitochondrial dysfunction compared to curcumin and ZnO NPs alone. PEG–Beta–Cur–ZnO NPs exhibit effective surface functionalization, pH-sensitive stability, and significantly enhanced larvicidal, antibacterial, and anticancer activities. These multifunctional nanoparticles show strong potential for eco-friendly vector control and biomedical applications.
Journal Article
Lansoprazole attenuates cyclophosphamide-induced cardiopulmonary injury by modulating redox-sensitive pathways and inflammation
by
Hassanein, Emad H. M.
,
Ahmed, Mohammed A.
,
Ali, Fares E. M.
in
1-Phosphatidylinositol 3-kinase
,
AKT protein
,
Anti-inflammatory agents
2023
Cyclophosphamide (CPA) is a classical chemotherapeutic drug widely used as an anticancer and immunosuppressive agent. However, it is frequently associated with significant toxicities to the normal cells of different organs, including the lung and heart. Lansoprazole (LPZ), a proton pump inhibitor (PPI), possesses antioxidant and anti-inflammatory properties. The current study investigated how LPZ protects against CPA-induced cardiac and pulmonary damage, focusing on PPARγ, Nrf2, HO-1, cytoglobin, PI3K/AKT, and NF-κB signaling. Animals were randomly assigned into four groups: normal control group (received vehicle), LPZ only group (Rats received LPZ at a dose of 50 mg/kg/day P.O. for 10 days), CPA group (CPA was administered (200 mg/kg) as a single i.p. injection on the 7th day), and cotreatment group (LPZ plus CPA). Histopathological and biochemical analyses were conducted. Our results revealed that LPZ treatment revoked CPA-induced heart and lung histopathological alterations. Also, LPZ potently mitigated CPA-induced cardiac and pulmonary oxidative stress through the activation of PPARγ, Nrf2/HO-1, cytoglobin, and PI3K/AKT signaling pathways. Also, LPZ effectively suppressed inflammatory response as evidenced by down-regulating the inflammatory strategic controller NF-κB, MPO, and pro-inflammatory cytokines. The present findings could provide a mechanistic basis for understanding LPZ's role in CPA-induced cardiopulmonary injury through the alleviation of oxidative stress and inflammatory burden.
Journal Article
Lycopene alleviates 5-fluorouracil-induced nephrotoxicity by modulating PPAR-γ, Nrf2/HO-1, and NF-κB/TNF-α/IL-6 signals
by
Altyar, Ahmed E.
,
Sayed, Amany A.
,
Saleem, Rasha Mohammed
in
5-Fluorouracil
,
Animals
,
Antimetabolites, Antineoplastic - adverse effects
2024
5-Fluorouracil (5-FU) is one of the most used anticancer drugs. However, its nephrotoxicity-associated drawback is of clinical concern. Lycopene (LYC) is a red carotenoid with remarkable anti-inflammatory and anti-oxidative properties. In this study, rats were divided randomly into five groups: control, lycopene (10 mg) (10 mg/kg/day; P.O), 5-FU (30 mg/kg/day; i.p.), Lycopene (5 mg) + 5-FU (5 mg/kg + 30 mg/kg/day), and lycopene (10 mg) + 5-FU (10 mg/kg + 30 mg/kg/day). LYC attenuated the loss of renal function induced by 5-FU in a dose-dependent manner. Rats co-treated with LYC had lower serum urea, creatinine, uric acid and KIM-1 levels, and a higher serum albumin level than those receiving 5-FU alone. Furthermore, co-treatment with the high dose of LYC maintained renal oxidant-antioxidant balance by ameliorating/preventing the loss of antioxidants and the elevation of malondialdehyde. Rats treated with 5-FU had markedly lower renal levels of PPAR-gamma, HO-1, Nfr2, and Il-10 and higher levels of NF-kB, TNF-alpha, and IL6 compared to the control rats. Co-treatment with LYC attenuated the reduction in PPAR-gamma, HO-1, Nfr2, and IL-10 levels and moderated the elevated levels of NF-kB, TNF-alpha, and IL-6. The kidneys from rats co-treated with lycopene (10 mg) + 5-FU did not show the degenerative changes in the glomerular tufts and tubules observed for the rats treated with 5-FU alone. In conclusion, LYC is a promising therapeutic strategy for attenuating 5-FU-induced nephrotoxicity through the restoration of antioxidant activities and inhibition of inflammatory responses by modulating PPAR-γ, Nrf2/HO-1, and NF-κB/TNF-α/IL-6, signals.
Journal Article
The antioxidant, anti-inflammatory, and anti-apoptotic effects of sesamin against cisplatin-induced renal and testicular toxicity in rats
by
Alamoudi, Mariam K.
,
Altyar, Ahmed E.
,
Sayed, Amany A.
in
Acute Kidney Injury - chemically induced
,
Acute Kidney Injury - metabolism
,
Acute Kidney Injury - pathology
2024
The present study investigated the nephron-testicular protective effects of sesamin against cisplatin (CP)-induced acute renal and testicular injuries.
Thirty-two male Wistar rats were allocated to receive carboxymethylcellulose (0.5%, as sesamin vehicle), CP (a single i.p. 5 mg/kg dose), CP plus sesamin at 10 or 20 mg/kg orally for 10 days.
Data analysis showed significant increases in serum urea, creatinine, interleukin (IL)-1, IL-6, and tumor necrosis factor-α (TNF-α), as well as renal and testicular tissue malondialdehyde and nitric-oxide concentrations in CP-intoxicated rats in comparison to control animals. On the contrary, rats treated with CP only exhibited significantly lower (
< .05) serum testosterone, tissue glutathione, and activities of endogenous antioxidant enzymes compared to control rats. Histopathologically examining CP-intoxicated rats' tissues using H&E and PAS stains showed atrophied glomeruli, interstitial inflammatory cells, atypic tubular epithelium with focal apoptosis, and reduced mucopolysaccharide content. Further, immunohistochemical staining of the same group revealed an increase in p53 and cyclooxygenase-II (Cox-II) expression in renal and testicular tissues. Treatment with sesamin alleviated almost all the changes mentioned above in a dose-dependent manner, with the 20 mg/kg dose restoring several parameters' concentrations to normal ranges.
In brief, sesamin could protect the kidneys and testes against CP toxicity through its antioxidant, anti-inflammatory, and anti-apoptotic effects.
Journal Article
Bioactive Peptides and Exercise Modulate the AMPK/SIRT1/PGC-1α/FOXO3 Pathway as a Therapeutic Approach for Hypertensive Rats
2022
Peptides are fragments of fundamental protein sequences that may have health benefits in addition to basic dietary benefits. Recently, we have reported on the pharmacological benefits of alcalase potato protein hydrolysate (APPH) and bioactive peptides isolated from APPH. The aim was to evaluate the synergistic effect of exercise along with DIKTNKPVIF (DF) peptides in ameliorating hypertension in spontaneously hypertensive rat (SHR) rats. We examined ECG parameters, lipid profiles, cardiac markers, and histology, and quantified the proteins associated with fibrosis, hypertrophy, apoptosis, mitochondrial biogenesis, and longevity pathways. DF peptide administration, along with exercise, reduced the blood pressure and cardiac marker levels in serum. Furthermore, it also suppressed the expression of fibrosis markers COL1A1, CTGF, and uPA and downregulated cardiac-hypertrophy-associated markers such as calcineurin, NFATC3, GATA4, pGATA4 and BNP. Exercise synergistically increases the expression of IFG1, PI3K, and AKT cell-survival pathway proteins, along with DF administration. Moreover, AMPK/SIRT1/PGC-1α/FOXO3 pathway protein expression was increased with the combinatorial administration of DF and exercise. Our data suggest that exercise, along with DF peptides, act synergistically in alleviating hypertension by activating the mitochondrial biogenesis pathway.
Journal Article
Immunomodulatory Effects of Cucurbita pepo L. Extract in Chronic Stress-Induced Dysregulation of Lymphoid Organs in Rats
by
Ayuob, Nasra
,
Qahl, Safa
,
Algaidi, Sami
in
adrenergic receptor
,
antioxidant
,
Chemical properties
2025
Objectives: Recently, increased attention has been given to pumpkin due to its proved nutritional components, which include antioxidant, antifatigue, and anti-inflammatory effects. The aim of the present work was to assess the impact of Cucurbita pepo L. (CP) on chronic unpredictable mild stress (CUMS)-induced changes in lymphoid organs through evaluating its effect on the histological structure of spleen, thymus gland, and lymph nodes compared to the antidepressant fluoxetine (FLU). Materials and Methods: Fifty male albino rats equally distributed into five groups that included control, control + CP, CUMS-exposed, FLU-treated, and CP-treated groups were used in this study. Rats were exposed to CUMS for 4 weeks, and treatment (either with FLU or CP) was started after 14 days of exposure. Behavior of the rats, serum corticosterone, oxidants/antioxidants profile, proinflammatory cytokines, and gene expression of glucocorticoid receptor (GR) and β-adrenergic receptor (β2-AR) were assessed after 28 days. Spleen, thymus gland, and lymph nodes were histopathologically assessed. Results: CP administration significantly reduced the CUMS-induced behavioural changes evident by the significant reduction in immobility time (p = 0.02) and corticosterone level (p < 0.001). Biochemically, CP reduced TNF-α and IL-6 (p < 0.001) and markedly alleviated the changes in oxidants/antioxidants in the serum and lymphoid organs compared to fluoxetine. CP significantly (p < 0.001) reduced CUMS-induced changes in GR and (β2-AR). Histopathologically, CP alleviated changes observed in the spleen, lymph nodes, and thymus gland. It significantly reduced the number of CD4, CD8, CD68, CD20, and caspase-3 immunopositive cells in the studied organs. Conclusions: This study proved the potential efficacy of CP in alleviating depression-associated immunodysregulation either alone or in combination with antidepressant therapy.
Journal Article
Post-treatment of rat aflatoxicosis by camel milk and silymarin
by
Fadl, Sabreen E.
,
El Nahas, Abeer F.
,
Hassaneen, Nahla H.
in
Aflatoxicosis
,
Aflatoxin B1
,
Biochemical markers
2025
Aflatoxins are highly potent mycotoxins that can seriously harm the health of humans and a variety of animal species. On the other hand, camel milk and silymarin offer a variety of positive effects for many animal species. In addition, camel milk and silymarin reduce the impact of AFB1 on the hematology, serum biochemical markers, histopathology of the liver and testes, and expression of the inflammatory, antioxidant, and male reproductive genes.
40 rats were used to evaluate the beneficial effect of silymarin and camel milk against aflatoxin B1 (AFB1) toxicity in rats. The classified treatments were the control negative (no treatment) and the control positive (supplied with 1.4 mg aflatoxin/kg diet) for 28 days. Camel milk group (supplied with 1.4 mg aflatoxin/kg diet) for 28 days and camel milk (1 milliliter of camel milk per kilogram of body weight) orally, from day 29 to day 43). Silymarin (supplied with 1.4 mg aflatoxin/kg diet) for 28 days and silymarin (20 mg silymarin/kg b.wt), orally, from day 29 to day 43). The evaluation was done through measuring leukocyte count, liver function tests, carcinoembryonic antigen (CEA), alpha-fetoprotein (AFP), ferritin, and testosterone. Moreover, the histopathology of the liver and testes was done along with expression levels of specific genes in the liver and testes.
The outcomes showed that the post-treatment with silymarin and camel milk improved biochemical markers in serum and ability to reproduce.
In conclusion, post-treatment with camel milk and silymarin could mitigate the negative effect of AFB1 on rats.
Journal Article
Musk (Moschus moschiferus) Attenuates Changes in Main Olfactory Bulb of Depressed Mice: Behavioral, Biochemical, and Histopathological Evidence
by
Ayuob, Nasra N.
,
Batawi, Ashwaq H.
,
AbdElfattah, Amany A.
in
Antioxidants
,
Apoptosis
,
Behavior
2021
Musk (
) has been described to have a significant impact on the central nervous system, as well as anticonvulsion and antidepressant effects. This study was designed to evaluate the efficacy of musk in alleviating alterations induced in olfactory bulb of depressed mice exposed to chronic stress and identify the mechanism behind it.
Fifty male albino mice were divided into five groups (
= 10 each): control, musk, chronic unpredictable mild stress (CUMS), fluoxetine-treated, and musk-treated groups were included in this study. Behavioral changes and serum levels of corticosterone and proinflammatory cytokines included tumor necrosis factor α, interleukin 6, and oxidant/antioxidant profile were assessed at the end of the experiment. Main olfactory bulb (MOB) has been processed for histopathological examination. Gene expression of caspase-3, glial fibrillary acidic protein, and Ki67 were assessed in the MOB using quantitative real-time polymerase chain reaction.
The study showed that musk inhalation significantly reduced (
< 0.001) corticosterone level, immobility time, inflammatory cytokines, and oxidative stress markers in CUMS-exposed mice compared to the untreated CUMS group. Musk lessened CUMS-associated neuronal alterations in the MOB and significantly reduced apoptosis and enhanced neural cell proliferation (
< 0.001) comparable to fluoxetine. Musk significantly enhanced the level of antioxidants in the serum and significantly reduced inflammatory cytokines. The anti-inflammatory and antioxidant activity of musk and its constituents seemed to be behind its neuroprotective effect observed in this study.
Musk effectively ameliorated the chronic stress-induced behavioral, biochemical, and neuronal structural changes in MOB mostly through its antioxidant and anti-inflammatory effect.
Journal Article