Ultrastructural study of arterio-venous anastomoses in gill filaments of Tilapia mossambica

Vogel, W; Vogel, V.; Schlote, W.

doi:10.1007/bf00227011

Cited by 49 publications

(20 citation statements)

References 29 publications

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“…In the literature, conflicting results about the influence of glucocorticoids on the collagen metabolism have been reported (1,2,3). Our results indicate that the reported effects may at least in part be due to the way in which the animals are housed.…”

Section: Introductioncontrasting

confidence: 71%

The Effect of Different Kinds of Animal Housing on Parameters of Collagen Metabolism in Guinea Pigs

Wepler¹,

Burkhardt²,

Burkhardt³

et al. 1977

Clinical Chemistry and Laboratory Medicine

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Wepler et al.: Effect of different kinds of animal housing on parameters of collagen metabolism 653 Summary: Parameters of collagen metabolism were investigated in guinea pigs, both untreated and treated with glucocorticoids. One series consisted of animals housed under normal conditions, the others of SPF animals from the same strain. There are marked differences in certain parameters, including the hydroxyproline content and the reaction of the collagen to glucocorticoids.

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Section: Introductioncontrasting

confidence: 71%

The Effect of Different Kinds of Animal Housing on Parameters of Collagen Metabolism in Guinea Pigs

Wepler¹,

Burkhardt²,

Burkhardt³

et al. 1977

Clinical Chemistry and Laboratory Medicine

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“…529), as part of a complex response to maximize oxygen delivery to the tissues (254). 4 Measurement of branchial venous outflow in the cod in vivo has demonstrated that the ␣-mediated increase in resistance is secondary to constriction of the arteriovenous anastomoses between the efferent filamental artery and the ILV (730), where nerve terminals have been observed (778). The ␤-mediated fall in branchial resistance is generally considered to be the result of dilation of afferent lamellar arterioles, which produces lamellar recruitment (728).…”

Section: Adrenergic Neurons and Chromaffin Tissuementioning

confidence: 99%

The Multifunctional Fish Gill: Dominant Site of Gas Exchange, Osmoregulation, Acid-Base Regulation, and Excretion of Nitrogenous Waste

Evans¹,

Piermarini²,

Choe³

2005

Physiological Reviews

2,325

1,788

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The fish gill is a multipurpose organ that, in addition to providing for aquatic gas exchange, plays dominant roles in osmotic and ionic regulation, acid-base regulation, and excretion of nitrogenous wastes. Thus, despite the fact that all fish groups have functional kidneys, the gill epithelium is the site of many processes that are mediated by renal epithelia in terrestrial vertebrates. Indeed, many of the pathways that mediate these processes in mammalian renal epithelial are expressed in the gill, and many of the extrinsic and intrinsic modulators of these processes are also found in fish endocrine tissues and the gill itself. The basic patterns of gill physiology were outlined over a half century ago, but modern immunological and molecular techniques are bringing new insights into this complicated system. Nevertheless, substantial questions about the evolution of these mechanisms and control remain.

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“…The hypothesis of Steen & Kruysse (1964) suggested that, in the eel, a by-pass shunts part of blood flowing from the heart away from the lamellar exchange system. A detailed morphological analysis in two other species: Tilapia mossambica and Salmo gairdneri suggests an alternative model of circulation (Morgan & Tovell, 1973;Dunel & Laurent, 1973;Vogel, Vogel & Kremers, 1973;Vogel, Vogel & Schlote 1974;Vogel, Vogel & Pfautsch, 1976;Dunel, 1975;Girard & Payan, 1976; E. G. Gannon & D. J. Randall, personnel communication).…”

Section: Introductionmentioning

confidence: 99%

Kinetic analysis and partitioning of sodium and chloride influxes across the gills of sea water adapted trout.

Girard¹,

Payan²

1977

The Journal of Physiology

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SUMMARY1. Sodium and chloride influxes across the gills of sea water adapted trout were studied with the perfused isolated head technique.2. The haemodynamic scheme describing anastomoses between efferent gill arteries and the filamentous sinus was confirmed and utilized to determine partitioning of sodium and chloride influxes.3. Two routes of sodium and chloride entry were demonstrated, one lamellar and the other sinusal. The lamellar sodium and chloride fluxes are respectively 133 ± 21*8 and 271 + 43-7 ptequiv/hr. 100 g. The sinus sodium and chloride fluxes are: 50 + 18X3 and 50 + 11-3 ,uequiv/hr. 100 g.4. The relative permeabilities of the apical and basal barriers of the lamellar epithelium were determined with influx experiments coupled to radioactive unloading experiments. The basal membrane is 30 times less permeable than the apical to sodium, while this ratio is 45 for chloride. Thus, the basal membrane represents the limiting factor in salt movement across the bronchial epithelium.5. The intracellular pools of the lamellar compartment were calculated for sodium: 1 1+0 17,uequiv/t00g of fish weight; and for chloride:541 + 0-83 gequiv/100 g of fish weight.

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Ultrastructural study of arterio-venous anastomoses in gill filaments of Tilapia mossambica

Cited by 49 publications

References 29 publications

The Effect of Different Kinds of Animal Housing on Parameters of Collagen Metabolism in Guinea Pigs

The Effect of Different Kinds of Animal Housing on Parameters of Collagen Metabolism in Guinea Pigs

The Multifunctional Fish Gill: Dominant Site of Gas Exchange, Osmoregulation, Acid-Base Regulation, and Excretion of Nitrogenous Waste

Kinetic analysis and partitioning of sodium and chloride influxes across the gills of sea water adapted trout.

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