Augmentation of Peripheral Chemosensitivity during Hypermetabolism (Paperback)

Langue : anglais

Edité par Dissertation.com, Florida, 2006

1581123272 / 9781581123272

Vendeur : AussieBookSeller, Truganina, VIC, AustralieAussieBookSeller

Vendeur avec une évaluation de 5 étoiles

Vendeur AbeBooks depuis 22 juin 2007

Afficher les articles de ce vendeur
Livre broché

Etat: Neuf

EUR 53,76

EUR 32,07 expédition 
Expédition depuis Australie vers Etats-Unis

Quantité disponible : 1 disponible(s)

Ajouter au panier
Retours gratuits sous 30 jours

Item description from seller

Paperback. The carotid body initiates reflexes aimed principally at the homeostatic maintenance of blood gas tensions. This thesis tested the hypothesis that the carotid body is also a physiological glucosensor, with a role in mediating exercise hyperpnoea. In anaesthetised rats, insulin-induced hypoglycaemia (from ca. 6.5 to 2.8 mmol L-1) caused an ca. two-fold increase of oxygen consumption that was associated with a significant, carotid body-dependent increase in ventilation (from ca. 420 to 640 ml min-1 kg-1) without change in blood gas tensions. This hypoglycaemic hyperpnoea was associated with hypokalaemia and no alterations of ventilation or metabolism were observed in euglycaemic, control studies, thus excluding any role for [K]] or insulin. During hypermetabolism, a proportional augmentation of peripheral CO2 gain, measured from the phrenic electroneurogram during artificial ventilation, was shown to maintain the arterial blood gas status. In vitro, measurements of single-fibre chemoafferent discharge showed that low [glucose], over a physiological range and during normoxia, increased neither the carotid baseline discharge nor the CO2 sensitivity. Taken together, these results demonstrate that the carotid body is not a physiological sensor of glucose but augmentation of the carotid body chemosensitivity via an undetermined yet, hypermetabolism-related factor(s) is most likely to be involved in exercise hyperpnoea. The carotid body initiates reflexes aimed principally at the homeostatic maintenance of blood gas tensions. This thesis tested the hypothesis that the carotid body is also a physiological glucosensor, with a role in mediating exercise hyperpnoea. In anaesthetised rats, insulin-induced hypoglycaemia (from ca. 6.5 to 2.8 mmol L-1) caused an ca. two-fold increase of oxygen consumption that was associated with a significant, carotid body-dependent increase in ventilation (from ca. 420 to 640 ml min-1 kg-1) without change in blood gas tensions. This hypoglycaemic hyperpnoea was associated with hypokalaemia and no alterations of ventilation or metabolism were observed in euglycaemic, control studies, thus excluding any role for [K+] or insulin. During hypermetabolism, a proportional augmentation of peripheral CO2 gain, measured from the phrenic electroneurogram during artificial ventilation, was shown to maintain the arterial blood gas status. In vitro, measurements of single-fibre chemoafferent discharge showed that low [glucose], over a physiological range and during normoxia, increased neither the carotid baseline discharge nor the CO2 sensitivity. Taken together, these results demonstrate that the carotid body is not a physiological sensor of glucose but augmentation of the carotid body chemosensitivity via an undetermined yet, hypermetabolism-related factor(s) is most likely to be involved in exercise hyperpnoea. Shipping may be from our Sydney, NSW warehouse or from our UK or US warehouse, depending on stock availability.

N° de réf. du vendeur 9781581123272

Titre
Augmentation of Peripheral Chemosensitivity during Hypermetabolism (Paperback)
Auteur
Ismaeel M. Bin-Jaliah
Éditeur
Dissertation.com, Florida
Année de publication
2006
État de l'article
new
Reliure
Paperback
Langue
anglais
ISBN à 10 chiffres
1581123272
ISBN à 13 chiffres
9781581123272

AussieBookSeller

Truganina, VIC, Australie

Vendeur avec une évaluation de 5 étoiles

Vendeur AbeBooks depuis 22 juin 2007

Frais d'expédition de Australie vers Etats-Unis

Article25 à 45 jours ouvrés8 à 14 jours ouvrés
Premier articleEUR 32,07EUR 38,14
Les délais de livraison sont fixés par les vendeurs et varient en fonction du transporteur et du lieu. Les commandes transitant par les douanes peuvent être retardées et les acheteurs sont responsables de tous les droits ou frais associés. Les vendeurs peuvent vous contacter au sujet de frais supplémentaires afin de couvrir toute augmentation des coûts d'expédition de vos articles.

Modes de paiement

  • Visa
  • Mastercard
  • American Express
  • Carte Bleue
  • Apple Pay
  • Google Pay

Profil professionnel du vendeur

The Nile Group Pty Ltd

42 Apex Drive
Truganina, VIC Australie 3029