In silico exploration of deep-sea fungal metabolites as inhibitor of Ebola and Marburg VP35 and VP40.

VP30 and VP40 proteins of Ebola and Marburg viruses have been recognized as potential targets for antiviral drug development due to their essential roles in the viral lifecycle. Targeting these proteins could disrupt key stages of the viral replication process, inhibiting the viruses' ability to propagate and cause disease. The current study aims to perform molecular docking and virtual screening on deep-sea fungal metabolites targeting Marburg virus VP40 Dimer, matrix protein VP40 from Ebola virus Sudan, Ebola VP35 Interferon Inhibitory Domain, and VP35 from Marburg virus.

Molecular docking and ADMET studies of halogenated metabolites from marine sponges as inhibitors of wild-type and mutants PBP2 in .

Gonorrhoea is a sexually transmitted infection (STI) caused by the bacteria . Gonorrhoea symptoms can vary, although roughly 50% of women and 10% of men infected with may be asymptomatic. If left untreated, gonorrhoea can cause major health problems.

Inhibition of hepatitis B virus activities by ‑derived acacetin and acetyl‑β‑carboline.

Hepatitis B virus (HBV) causes acute and chronic liver diseases, leading to cirrhosis and hepatocellular carcinoma. Although direct-acting nucleoside analogs, such as lamivudine (LAM), adefovir and famciclovir, are available, emergence of drug-resistance due to mutations in HBV polymerase (POL) restricts their further use. Alternatively, numerous plant products and compounds isolated from plants have been reported to confer anti-HBV efficacies without any sign of resistance or .

Corrigendum to "New terpenic and phenolic compounds from reverse oxidative and apoptotic damages in human endothelial cells". [Saudi Pharm. J. 29(10) (2021) 1102-1111].

[This corrects the article DOI: 10.1016/j.jsps.

New terpenic and phenolic compounds from reverse oxidative and apoptotic damages in human endothelial cells.

Elevation in hyperglycemia-associated methylglyoxal level can trigger vascular endothelial cells oxidative stress and apoptosis. The present work assesses the cell proliferative, anti-oxidative and anti-apoptotic potential of derived four new terpenes: a norsesquaterpenol (normonisesquaterpenol), a monocyclic triterpenoid (suaedanortriterpene dione), an aromatic monoterpenic ester and a labdane-type norditerpenic xyloside as well as two new phenols: an alkylated β-naphthol and a β-methoxy naphthalene in cultured human umbilical vein endothelial cells (HUVEC). Of these, suaedanortriterpenedione (53.

Burnout and Associated Risk Factors in Pediatric Residents.

Burnout is a syndrome characterized by emotional exhaustion, depersonalization, and a low sense of personal accomplishment. The aim of this study was to identify burnout incidence in pediatric residents and evaluate possible risk factors for burnout. Using a cross-sectional study design, we approached all pediatric residents in the Saudi Pediatrics Residency Program in Riyadh, Saudi Arabia (n=457) between January and March 2019.

Oncoglabrinol C, a new flavan from protects endothelial cells against oxidative stress and apoptosis, and modulates hepatic CYP3A4 activity.

Active herbal or natural compounds have high chemical diversity and specificity than synthetic drugs. Recently, we have validated the hypoglycemic salutation of in rodent model, and demonstrated the activation of PPARα/γ by its newly ioslated flavan derivative Oncoglabrinol C (5,3'-Dihydroxyflavan 7-4'--digallate) in liver cells (HepG2). Here we evaluated the potential of Oncoglabrinol C against Dichlorofluorescin (DCFH) and Methylglyoxal (MGO) induced endothelial cells (HUVEC) oxidative and apoptotic damage, including activation of PXR-mediated hepatic CYP3A4.

Evaluation of pyrazolopyrimidine derivatives as microtubule affinity regulating kinase 4 inhibitors: Towards therapeutic management of Alzheimer's disease.

Microtubule affinity regulating kinase 4 (MARK4) plays essential role in the tau-assisted regulation of microtubule dynamics. Over expression of MARK4 causes early phosphorylation of Ser262 of tau protein which is essential for microtubule binding. Hyperphosphorylation of tau protein causes the formation of paired helical fragments and neurofibrillary tangles, the hallmarks of Alzheimer's disease.

Identification and evaluation of glutathione conjugate gamma-l-glutamyl-l-cysteine for improved drug delivery to the brain.

Glutathione (GU), an endogenous antioxidant tripeptide, is frequently transferred in the human brain through -methyl-d-aspartate receptor (NMDAR), profusely expressed at the blood-brain barrier (BBB) junction. GU, also modifies the characteristics of tight junction proteins (occludin and claudin) at the site of BBB by depolarizing the enzyme, protein tyrosine phosphatase that manifests its usefulness for passive delivery of nanocarriers to the brain. GU, thus, represents itself as an ideal ligand for the surface decoration of nanocarriers to successfully administer them across the brain via receptor-mediated drug delivery pathway.

Functional implications of pH-induced conformational changes in the Sphingosine kinase 1.

Sphingosine kinase 1 (SphK1) catalyzes the conversion of sphingosine to sphingosine-1-phosphate that acts as a bioactive signalling molecule, and regulates various cellular processes including lymphocyte trafficking, angiogenesis and response to apoptotic stimuli. Abnormal expression of SphK1 has been observed in a wide range of cancers highlighting their role in tumour growth and metastasis. This enzyme also plays a critical role in metabolic and inflammatory diseases, including pulmonary fibrosis, diabetic neuropathy and Alzheimer's disease.

The anti-hepatitis B virus therapeutic potential of anthraquinones derived from Aloe vera.

Although the approved hepatitis B virus (HBV)-polymerase inhibitors (e.g., lamivudine) often lead to drug-resistance, several natural products have shown promising efficacies.

Structural Analysis and Conformational Dynamics of Gene Mutations Involved in Coat Plus Syndrome.

The human CST complex (CTC1-STN1-TEN1) is associated with telomere functions including genome stability. We have systemically analyzed the sequence of STN and performed structure analysis to establish its association with the Coat Plus (CP) syndrome. Many deleterious non-synonymous SNPs have been identified and subjected for structure analysis to find their pathogenic association and aggregation propensity.

Plant-derived antiviral drugs as novel hepatitis B virus inhibitors: Cell culture and molecular docking study.

Despite high anti-HBV efficacies, while the nucleoside analogs (e.g., lamivudine) lead to the emergence of drug-resistance, interferons (e.

Chiral HPLC Separation and Modeling of Four Stereomers of DL-Leucine-DL-Tryptophan Dipeptide on Amylose Chiral Column.

Chiral high-performance liquid chromatography (HPLC) separation and modeling of four stereomers of DL-leucine-tryptophan DL-dipeptide on AmyCoat-RP column are described. The mobile phase applied was ammonium acetate (10 mM)-methanol-acetonitrile (50:5:45, v/v). The flow rate of the mobile phases was 0.

Determination of chloramphenicol in biological matrices by solid-phase membrane micro-tip extraction and capillary electrophoresis.

Solid-phase membrane micro-tip extraction (SPMMTE) and capillary electrophoresis (CE) methods were developed and validated for analysis of chloramphenicol in human plasma and urine samples. Iron composite nanoparticles were prepared using green technology. CE was carried out using a silica capillary (60 cm × 50 μm i.

Quantification of glycyrrhizin in anti-stress herbal formulations by validate HPTLC method: a rational paradigm towards quality control of herbals.

In the present study an analytical method of high-performance thin-layer chromatography (HPTLC) has been developed for quantification of glycyrrhizin for marketed antistressliquorice root capsules (LRC) and herbal tea (HT). Chromatography was performed by using mobile phase ethyl acetate (EA): glacial acetic acid (GAA): Methanol (MeOH): water (H(2)O) in proportion of 6:2:2:1, v/v/v/v. The developed plate was scanned and quantified densitometrically at absorption maxima 254nm.

Theoretical and experimental study on lipophilicity and wound healing activity of ginger compounds.

Objective: To correlate the chromatographic and computational method to calculate lipophilicity of selected ginger compounds and to observe the effects of log P on wound healing.

Methods: Mixtures of acetonitrile and water with acetonitrile content between 95% and 50% v/v in 5% increments were kept separately in 10 different chromatographic chambers, saturated with solvent for 2 h. Spots were observed under UV light at λ=254 nm p-anisaldehyde used as a spraying reagent.