Biologically active metabolite of vitamin D3 from bone, liver, and blood serum

A rapidly acting metabolite of vitamin D3.

A vitamin D(3) metabolite in intestine more polar than 25-hydroxy-vitamin D(3)(25-OH D(3)) has been detected by countercurrent distribution. The intestinal metabolite is found also after administration of labeled hydroxy D(3), indicating that it arises from vitamin D(3) via the intermediate 25-hydroxy derivative. The more polar metabolite is localized in the nuclear-chromatin fraction and appea...

Comparison of Serum Level of Vitamin D3 in Covid-19 Patients and Non-Infected Individuals

Background and Objective: Coronavirus Disease 2019 (COVID-19) has caused the death of many people, mainly by causing respiratory failure. The method of quarantine for the control of this disease leads to deprivation of vitamin D3 production. In this regard, this study aimed to investigate the relationship between serum vitamin D3 level and risk of COVID-19. Materials and Methods: This case-con...

Biologically Active Additives - Relevance for Bone Regeneration

Isolation of biologically active Actinomycetes from untouched soils: a case study from Karaj district, Iran

Actinomycetes are a source of a broad variety of secondary metabolites with diverse biological activities, such as antifungi, antibiotics and antitumorals; many of which have been developed for clinical use. In this study, 34 actinomycetes from untouched soils were isolated from Alborz Province-Iran. Evaluation ofantifungal and anti bacterial activities of these isolates, demonstrated the capab...

Molecular Characterization of a Fungus Producing Membrane Active Metabolite and Analysis of the Produced Secondary Metabolite

Background: The majority of studies on soil Aspergillus concern the isolation and characterization of the antimicrobial compounds produced by this organism. Our previous studies indicated an isolated Aspergillus strain soil to be of interest, and this subject is further investigated here. Method:  Soil samples of various locations in Iran were collected. Extract from Aspergillus sp. culture was...