Influence of glucose and insulin on transcapillary fluid absorption from the arm during lower body negative pressure in man
Författare
Summary, in English
This study examined the influence of insulin and glucose on the transcapillary fluid absorption during lower body negative pressure (LBNP) in humans. Ten healthy males [23 (1) years] were exposed to LBNP of 45 cmH(2)O on two occasions: (1) before and during a hyperinsulinaemic clamp (HI) and (2) before and during a hyperglycaemic clamp (HG). Transcapillary fluid absorption and blood flow were recorded with volumetric technique. Forearm blood flow increased during HI from 2.3 (0.3) ml (100 ml)(-1) min(-1) to 3.3 (0.5) ml (100 ml)(-1) min(-1) (P<0.05). The haemodynamic response to LBNP was similar during HI and HG compared with control LBNP. Transcapillary fluid absorption during LBNP increased during HG from 0.044 (0.007) ml (100 ml)(-1) min(-1) to 0.059 (0.009) ml (100 ml)(-1) min(-1) (P<0.01), whereas it was unchanged during HI. In conclusion, hyperglycaemia augments transcapillary fluid absorption from skeletal muscle and skin during LBNP whereas hyperinsulinaemia has no such effect. This indicates that in human hyperglycaemia contributes to plasma volume restitution during hypovolaemic circulatory stress.
Publiceringsår
2003
Språk
Engelska
Sidor
138-143
Publikation/Tidskrift/Serie
European Journal of Applied Physiology
Volym
90
Issue
1-2
Dokumenttyp
Artikel i tidskrift
Förlag
Springer
Ämne
- Physiology
Nyckelord
- hyperinsulinaemia
- hyperglycaemia
- skeletal muscle
- lower body negative pressure
- capillary permeability
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1439-6327