Prevalence of depression in patients with end-stage renal disease undergoing hemodialysis in Saudi Arabia: A cross-sectional study.

Background: A hemodialysis is a treatment option for patients with End-Stage Renal Disease (ESRD). However, patients undergoing hemodialysis three times per week may experience psychological issues, including depression, which are highly prevalent among patients. Unfortunately, most healthcare providers fail to recognize the symptoms of depression due to overlap with other somatic symptoms; thus, depression remains undiagnosed

Objective: This study aimed to estimate the prevalence of depression and compare the differences in depression symptoms according to the sociodemographic characteristics of patients with ESRD undergoing hemodialysis.

The Effect of Social Isolation Types on Quality of Life during the Coronavirus Disease 2019 Pandemic in Saudi Arabia: A Cross-Sectional Study.

COVID-19 has caused a global pandemic that has spread rapidly to six continents, with over 2.5 million deaths from December 2019 to March 2021. The number of confirmed COVID-19 cases is still growing worldwide, and quarantines have been recommended to prevent the disease's spread.

Assessment of Mothers' Knowledge, Attitudes, and Practices Regarding Childhood Vaccination during the First Five Years of Life in Saudi Arabia.

Aim: This study's aim was to assess the knowledge, attitudes, and practices of mothers regarding childhood vaccination during the first five years of children's lives in Saudi Arabia.

Method: A cross-sectional, descriptive study was conducted with the application of convenience sampling, and 262 questionnaires were completed by Saudi mothers who had children aged 5 years or younger.

Results: The majority of the participants were aged 25-31 years (57%), 61% held a bachelor's degree, and 60.

The clinical outcome of HIV infection at a tertiary care center in Riyadh, Saudi Arabia.

To investigate clinical characteristics and the outcome of people living with HIV (PLWHIV) at tertiary care center in Riyadh, Saudi Arabia. Methods: The present retrospective, observational study was carried between 2000-2019 at Prince Sultan Military Medical City (PSMMC), Riyadh, Saudi Arabia. The demographic and clinical characteristics of  137 PLWHIV patients were collected by reviewing the medical data record.

Effect of Dendrimer Generation and Aglyconic Linkers on the Binding Properties of Mannosylated Dendrimers Prepared by a Combined Convergent and Onion Peel Approach.

An efficient study of carbohydrate-protein interactions was achieved using multivalent glycodendrimer library. Different dendrimers with varied peripheral sugar densities and linkers provided an arsenal of potential novel therapeutic agents that could be useful for better specific action and greater binding affinities against their cognate protein receptors. Highly effective click chemistry represents the basic method used for the synthesis of mannosylated dendrimers.

Metabolism of Oxo-Bile Acids and Characterization of Recombinant 12α-Hydroxysteroid Dehydrogenases from Bile Acid 7α-Dehydroxylating Human Gut Bacteria.

Bile acids are important cholesterol-derived nutrient signaling hormones, synthesized in the liver, that act as detergents to solubilize dietary lipids. Bile acid 7α-dehydroxylating gut bacteria generate the toxic bile acids deoxycholic acid and lithocholic acid from host bile acids. The ability of these bacteria to remove the 7-hydroxyl group is partially dependent on 7α-hydroxysteroid dehydrogenase (HSDH) activity, which reduces 7-oxo-bile acids generated by other gut bacteria.

OPTIMIZATION OF SOME HEAVY METALS BIOSORPTION BY REPRESENTATIVE EGYPTIAN MARINE ALGAE(1).

Marine algae-as inexpensive and renewable natural biomass-have attracted the attention of many investigators to be used to preconcentrate and biosorb many heavy metal ions. Impressed by this concept, the metal uptake capacity of Egyptian marine algae was examined using representatives of green and brown algae, namely, Ulva lactuca L. and Sargassum latifolium (Turner) C.

Studies on the application of immobilization technique for the production of cyclosporin A by a local strain of Aspergillus terreus.

The formation of cyclosporin A (Cy A) by immobilized spores and mycelia of Aspergillus terreus was investigated. Different carriers were tested as immobilizing carriers, whereby Ca-alginate was selected for further experimentation. The role of alginate concentration, biomass weight, pH value of the cultivation medium, repeated utilization of the immobilized fungus as well as the supplementation of different amino acid precursors were studied.

Role of some fermentation parameters on cyclosporin A production by a new isolate of Aspergillus terreus.

A local isolate of Aspergillus terreus was selected among different microorganisms as a new cyclosporin A (Cy A) producing culture. The formation of Cy A was investigated under different fermentation conditions (including selection of the cultivation medium, fermentation time course, inoculum nature, medium volume, agitation rate, pH value). Relatively high Cy A productivities were maintained when the fermentation process was carried out using a medium composed of (g/L): glucose, 50; bactopeptone, 10; KH(2)PO(4), 5; KCl, 2.

Some biochemical aspects of the enzymic transformation of cortisol with Bacillus cereus.

The role of a variety of compounds including organic acids, vitamins, growth promoting substances, purines and pyrimidines in the bioconversion of cortisol with Bacillus cereus was investigated. The transformation of cortisol to prednisolone and pregn-4-en-11beta, 17alpha,20beta, 21-tetrol-3-one was affected by these compounds in different manners. The enzymatic delta1-dehydrogenation reaction was greatly induced with fumarate, menadione, and xanthine treatments.

Formation and some factors influencing the activity of progesterone hydroxylases by Aspergillus niger.

The formation of progesterone hydroxylases by Aspergillus niger 173 was investigated. The constitution of the fermentation medium influenced both the yield and the type of enzymes catalyzing the transformation of progesterone. The enzyme yield also varied with the pH value at which induction was performed as well as with the buffer used.