Biomaterial Database

[The effect of ultraviolet rays and climatic conditions (solar radiation and temperature) on the calcinogenic activity of Trisetum flavescens and Nierembergia veitchii]. 1991

J R Mello, and G Habermehl

Chemischen Institut der Tierärztlichen Hochschule Hannover.

Cholecalciferol (Vitamin D3) and its metabolites participate in the regulation of Ca and P metabolism in vertebrates. The intermediate (6,7-cis-precalciferol) is formed by a photoreaction at wave length of 250-310 nm from 7-dehydrocholecalciferol in skin tissues. Vitamin D3, 1,25(OH)2 D3 and other metabolites, previously known to be synthesized only in mammalians and avians, have been detected also in plants. The influence of the UV light (6 hrs radiation with 254 nm) in the calcinogenic activity of T. flavescens and N. veitchii was tested. The extracts of the plants were administered to rachitic chicks in two research models: "Alimentation without Vitamin D" and "Strontium added Alimentation". After 25 days the extracts were administered (per os) and the serum was analyzed to determine the level of Ca, P and alkaline phosphatase. The results were compared with those obtained in chicks with standards of vitamin D3, 1,25(OH)2 D3, T. flavescens and N. veitchii not irradiated and also with T. flavescens that has grown in Rio Grande do Sul/Brazil.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D010936	Plant Extracts	Concentrated pharmaceutical preparations of plants obtained by removing active constituents with a suitable solvent, which is evaporated away, and adjusting the residue to a prescribed standard.	Herbal Medicines,Plant Extract,Extract, Plant,Extracts, Plant,Medicines, Herbal
D010944	Plants	Multicellular, eukaryotic life forms of kingdom Plantae. Plants acquired chloroplasts by direct endosymbiosis of CYANOBACTERIA. They are characterized by a mainly photosynthetic mode of nutrition; essentially unlimited growth at localized regions of cell divisions (MERISTEMS); cellulose within cells providing rigidity; the absence of organs of locomotion; absence of nervous and sensory systems; and an alternation of haploid and diploid generations. It is a non-taxonomical term most often referring to LAND PLANTS. In broad sense it includes RHODOPHYTA and GLAUCOPHYTA along with VIRIDIPLANTAE.	Plant
D011201	Poultry Diseases	Diseases of birds which are raised as a source of meat or eggs for human consumption and are usually found in barnyards, hatcheries, etc. The concept is differentiated from BIRD DISEASES which is for diseases of birds not considered poultry and usually found in zoos, parks, and the wild.	Disease, Poultry,Diseases, Poultry,Poultry Disease
D002118	Calcium	A basic element found in nearly all tissues. It is a member of the alkaline earth family of metals with the atomic symbol Ca, atomic number 20, and atomic weight 40. Calcium is the most abundant mineral in the body and combines with phosphorus to form calcium phosphate in the bones and teeth. It is essential for the normal functioning of nerves and muscles and plays a role in blood coagulation (as factor IV) and in many enzymatic processes.	Coagulation Factor IV,Factor IV,Blood Coagulation Factor IV,Calcium-40,Calcium 40,Factor IV, Coagulation
D002645	Chickens	Common name for the species Gallus gallus, the domestic fowl, in the family Phasianidae, order GALLIFORMES. It is descended from the red jungle fowl of SOUTHEAST ASIA.	Gallus gallus,Gallus domesticus,Gallus gallus domesticus,Chicken
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D012279	Rickets	Disorders caused by interruption of BONE MINERALIZATION manifesting as OSTEOMALACIA in adults and characteristic deformities in infancy and childhood due to disturbances in normal BONE FORMATION. The mineralization process may be interrupted by disruption of VITAMIN D; PHOSPHORUS; or CALCIUM homeostasis, resulting from dietary deficiencies, or acquired, or inherited metabolic, or hormonal disturbances.	Rachitis,Rachitides
D013472	Sunlight	Irradiation directly from the sun.	Sunshine
D013696	Temperature	The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms.	Temperatures