Biomaterial Database

Zinc-induced tolerance to cadmium cytotoxicity without metallothionein induction in cultured bovine aortic endothelial cells. 1995

A Mishima, and T Kaji, and C Yamamoto, and M Sakamoto, and H Kozuka

Department of Environmental Science, Faculty of Pharmaceutical Sciences, Hokuriku University, Kanazawa, Japan.

We investigated the cytotoxicity of cadmium in cultured vascular endothelial cells from bovine aorta pretreated with zinc. The cytotoxicity was evaluated by the [3H]adenine release assay. It was shown that the increase in the [3H]adenine release after challenge with cadmium was significantly prevented by pretreatment with zinc. It was histologically observed that cadmium-induced occurrence of the de-endothelialized areas was reduced in zinc-pretreated cell layer. Intracellular accumulation of cadmium was significantly less but that of zinc was more in zinc-pretreated cells. The content of cadmium in both the particulate and the cytosol fraction was decreased by zinc pretreatment; however, metallothionein content after challenge with cadmium was not changed. It was therefore concluded that zinc is capable of inducing a tolerance to cadmium cytotoxicity in cultured vascular endothelial cells; this tolerance is postulated to be due to a decrease in the intracellular cadmium accumulation rather than a metallothionein induction.

UI	MeSH Term	Description	Entries
D008668	Metallothionein	A low-molecular-weight (approx. 10 kD) protein occurring in the cytoplasm of kidney cortex and liver. It is rich in cysteinyl residues and contains no aromatic amino acids. Metallothionein shows high affinity for bivalent heavy metals.	Isometallothionein,Metallothionein A,Metallothionein B,Metallothionein I,Metallothionein II,Metallothionein IIA
D002104	Cadmium	An element with atomic symbol Cd, atomic number 48, and atomic weight 112.41. It is a metal and ingestion will lead to CADMIUM POISONING.
D002417	Cattle	Domesticated bovine animals of the genus Bos, usually kept on a farm or ranch and used for the production of meat or dairy products or for heavy labor.	Beef Cow,Bos grunniens,Bos indicus,Bos indicus Cattle,Bos taurus,Cow,Cow, Domestic,Dairy Cow,Holstein Cow,Indicine Cattle,Taurine Cattle,Taurus Cattle,Yak,Zebu,Beef Cows,Bos indicus Cattles,Cattle, Bos indicus,Cattle, Indicine,Cattle, Taurine,Cattle, Taurus,Cattles, Bos indicus,Cattles, Indicine,Cattles, Taurine,Cattles, Taurus,Cow, Beef,Cow, Dairy,Cow, Holstein,Cows,Dairy Cows,Domestic Cow,Domestic Cows,Indicine Cattles,Taurine Cattles,Taurus Cattles,Yaks,Zebus
D002478	Cells, Cultured	Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others.	Cultured Cells,Cell, Cultured,Cultured Cell
D004730	Endothelium, Vascular	Single pavement layer of cells which line the luminal surface of the entire vascular system and regulate the transport of macromolecules and blood components.	Capillary Endothelium,Vascular Endothelium,Capillary Endotheliums,Endothelium, Capillary,Endotheliums, Capillary,Endotheliums, Vascular,Vascular Endotheliums
D000225	Adenine	A purine base and a fundamental unit of ADENINE NUCLEOTIDES.	Vitamin B 4,4, Vitamin B,B 4, Vitamin
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
D001011	Aorta	The main trunk of the systemic arteries.	Aortas
D015032	Zinc	A metallic element of atomic number 30 and atomic weight 65.38. It is a necessary trace element in the diet, forming an essential part of many enzymes, and playing an important role in protein synthesis and in cell division. Zinc deficiency is associated with ANEMIA, short stature, HYPOGONADISM, impaired WOUND HEALING, and geophagia. It is known by the symbol Zn.