PMID- 9989243 OWN - NLM STAT- MEDLINE DCOM- 19990225 LR - 20190610 IS - 0006-3002 (Print) IS - 0006-3002 (Linking) VI - 1453 IP - 1 DP - 1999 Jan 6 TI - Enhanced tumor necrosis factor-alpha production following endotoxin challenge in rats is an early event during magnesium deficiency. PG - 35-40 AB - Magnesium (Mg) plays an essential role in fundamental cellular reactions and the importance of the immuno-inflammatory processes in the pathology of Mg deficiency has been recently reconsidered. The purpose of the present study was to assess the effect of different stages of Mg deficiency on endotoxin response and tumor necrosis factor-alpha (TNF alpha) production. Weaning male Wistar rats were pair fed either a Mg-deficient or a control diet. At day 7, lipopolysaccharide (LPS) induced no lethal effects in control rats but resulted in 70% mortality in Mg-deficient rats within 3 h. The vulnerability of Mg-deficient rats to LPS was associated with higher TNF alpha plasma values. Mg-deficient animals that received magnesium supplementation before endotoxin challenge had significantly increased survival. At day 2, control and Mg-deficient rats were also subjected to endotoxin challenge with or without magnesium pre-treatment. A significant increase in TNF alpha plasma level was observed in Mg-deficient rats compared to rats fed the control diet. Mg-deficient rats that received magnesium replacement therapy before endotoxin challenge had significantly lower TNF alpha plasma values than those receiving saline before endotoxin. Thus, the results of this experiment suggest that the activated or primed state of immune cells is an early event occurring in Mg deficiency. FAU - Malpuech-Brugere, C AU - Malpuech-Brugere C AD - Centre de Recherches en Nutrition Humaine, Unite Maladies Metaboliques et Micronutriments-INRA-Theix, Saint-Genes-Champanelle, France. FAU - Nowacki, W AU - Nowacki W FAU - Rock, E AU - Rock E FAU - Gueux, E AU - Gueux E FAU - Mazur, A AU - Mazur A FAU - Rayssiguier, Y AU - Rayssiguier Y LA - eng PT - Journal Article PL - Netherlands TA - Biochim Biophys Acta JT - Biochimica et biophysica acta JID - 0217513 RN - 0 (Endotoxins) RN - 0 (Tumor Necrosis Factor-alpha) RN - I38ZP9992A (Magnesium) SB - IM MH - Animals MH - Endotoxins MH - Magnesium/blood/pharmacology MH - Magnesium Deficiency/blood/chemically induced/*metabolism MH - Male MH - Rats MH - Rats, Wistar MH - Tumor Necrosis Factor-alpha/analysis/*biosynthesis EDAT- 1999/02/16 00:00 MHDA- 1999/02/16 00:01 CRDT- 1999/02/16 00:00 PHST- 1999/02/16 00:00 [pubmed] PHST- 1999/02/16 00:01 [medline] PHST- 1999/02/16 00:00 [entrez] AID - S0925-4439(98)00081-7 [pii] AID - 10.1016/s0925-4439(98)00081-7 [doi] PST - ppublish SO - Biochim Biophys Acta. 1999 Jan 6;1453(1):35-40. doi: 10.1016/s0925-4439(98)00081-7.