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Skeletal response of rats to repeated short-term hyperbaric helium-oxygen exposures

, : Skeletal response of rats to repeated short-term hyperbaric helium-oxygen exposures. Aviation, Space, and Environmental Medicine 47(7): 695-699

Young male rats were exposed to repeated heliox dives and analyzed for skeletal alterations. Animals were exposed 1, 3, 5, or 7 times to either 1 ATA He-O2 for 12.5 h, or to 5 ATA He-O2 for 4 h and a 8.5 h decompression, or to 5 ATA He-O2 for 4 h and a 1.5 h decompression. In a separate study, 30 rats were exposed 6 times to 5 ATA He-O2 and explosively decompressed. Animals were sacrificed 20 d after the last dive. There were no significant changes in femur wet weight, density, ash weight, length, or mineral content. Plasma calcium, phosphorus, and alkaline phosphatase remained normal. Eighteen of 30 animals survived the six explosive decompressions; however, there were no significant changes in bone. These results indicate that the number and rate of decompressions used in this study have no lasting effect on bone growth and mineral composition in the rat.


PMID: 971153

Other references

Scott, S.H., 2001: Neural correlates of coordinated motor patterns at the shoulder and elbow in primary motor cortex during planar reaching movements. The purpose of the present study was to examine how the peripheral motor system generates coordinated movements to spatial targets and to examine whether neural activity in primary motor cortex covaried with these features of movement. The activit...

Perez Benitez, E.R., 1971: Principles of pedagogical methods. Adm; Revista de la Asociacion Dental Mexicana 28(5): 445-451

Jackson, T.; Ullery, C.; Davidson, T.J.hnson, M., 1973: Effect of irrigation and nitrogen fertilizer on yield and grade of Russet Burbank potatoes. Proceedings 4 55-63

Argent, N.B.; Burrell, L.M.; Goodship, T.H.; Wilkinson, R.; Baylis, P.H., 1991: Osmoregulation of thirst and vasopressin release in severe chronic renal failure. Subjects with severe chronic renal failure (CRF) have higher plasma concentrations of arginine vasopressin (AVP) than normal subjects, and some develop severe thirst. Eight patients with CRF and seven matched controls underwent hypertonic saline i...

Sibal, L.R.; Fink, M.A.; Plata, E.J.; Kohler, B.E.; Noronha, F.; Lee, K.M., 1970: Methods for the detection of viral antigen and antibody to a feline leukemia viras (a preliminary report.). Passive HI and micro-immunodiffusion tests were used to detect and measure feline leucaemia virus (FeLV) antigens in cat tumour and tissue extracts. Various tissues from 12 of 13 cats with spontaneous leucaemia (lymphosarcoma) contained FeLV antig...

Roth, F., 1956: A new remedy for coughing. La Semaine des Hopitaux 32(6): 325-327

Fanta, E.; Lucchiari, PH.; Bacila, M., 1989: The effect of temperature increase on the behavior of Antarctic fish. Proceedings of the NIPR Symposium on Polar Biology, 123-130 No. 2

Mico, E.; Galante, E., 1999: The behaviour of Aethiessa floralis visiting Onopordum macracanthum Schousboe. The activity patterns of Aethiessa floralis (F., 1787) (Coleoptera, Scarabaeoidea, Cetoniidae) visiting Onopordum macracanthum Schousboe (Compositae) throughout the day were studied in a coastal ecosystem of Alicante (SE of Spain). Individuals wer...

Dorjes, J., 1987: Die Biota des Sublitorals. Senckenberg-Buch, 63: 141-153

Anonymous, 1977: Australian doctors return from China. Australian Hospital: 8-8