An immunohistochemical study on the neuroendocrine system in the alimentary canal of the brown trout, Salmo trutta, L., 1758

Bosi, G.; Giancamillo, A. Di; Arrighi, S.; Domeneghini, C.

doi:10.1016/j.ygcen.2004.06.003

Cited by 54 publications

(66 citation statements)

References 57 publications

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“…In O. hepsetus, 5-HT-IR cells were observed only in the regions of the stomach, both in the lining epithelium and the glandular epithelium, as also observed in C. herzi by Lee et al [44] . As was described for the fish species Oncorhynchus mykiss [54] , Salmo trutta [55] , Odontesthes bonariensis [56] and Rhamdia quelen [57] , in O. hepsetus we observed CCK-IR cells in the intestine; in this case only in the posterior part, while in O. bonariensis [56] these cells were observed throughout the gut, but with greater concentration in the hindgut. There were no CCK-IR cells in the other regions of the DT of O. hepsetus.…”

Section: Discussionsupporting

confidence: 83%

Immunohistochemical study of the digestive tract ofOligosarcus hepsetus

Vieira-Lopes

Pinheiro²,

Sales³

et al. 2013

WJG

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AIM:To describe the histology of the digestive tract and to investigate the occurrence of endocrine cells in Oligosarcus hepsetus (O. hepsetus ). METHODS:The digestive tract (DT) of O. hepsetus was divided into esophagus, two stomach regions (glandular and non-glandular) and two intestinal regions (anterior and posterior). These specimens were processed by routine histological techniques and stained with hematoxylin-eosin, Gomori's trichrome, periodic acid Schiff (PAS) and Alcian blue (AB). An immunohistochemical method using avidin-biotin-peroxidase was employed. RESULTS:The esophagus is lined with a non-keratinized stratified squamous epithelium that is reactive to PAS and AB. The stomach has a mucosa lined with a simple columnar epithelium with mucus-secreting cells that are reactive only to PAS. The intestine has a simple columnar epithelium with a brush border and goblet cells that are reactive to PAS and AB. Somatostatin, serotonin and cholecystokinin immunoreactive cells were identified throughout the DT. CONCLUSION:This study revealed adaptations for the species' diet and showed that the distribution and relative frequency of immunoreactive cells are similar to those of other fish.

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Section: Discussionsupporting

confidence: 83%

Immunohistochemical study of the digestive tract ofOligosarcus hepsetus

Vieira-Lopes

Pinheiro²,

Sales³

et al. 2013

WJG

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“…According to Deveney and Way (1983), gastrointestinal hormones secreted by endocrine cells have important functions in the overall regulation of the digestive process, such as nutrient absorption, gut motility and intestinal blood flow. The presence of endocrine cells in the fish GIT can vary in frequency and distribution depending on the fish species (Pan et al, 2000a;Ç inar and Diler, 2002;Bosi et al, 2004;Ku et al, 2004;Tarakç i, 2005;Min et al, 2009). …”

Section: Introductionmentioning

confidence: 99%

Histochemical and immunohistochemical study on endocrine cells (5HT, GAS, and SST) of the gastrointestinal tract of a teleost, the characin Astyanax bimaculatus

et al. 2015

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“…Only recently a fish leptin gene was identified (Kurokawa et al, 2005) and leptin-like immunoreactivity was found in the blood, brain, heart, liver, gut, and plasma of fish (Bosi et al, 2004;Ferrando et al, 2009;Huising et al, 2006;Johnson et al, 2000;Kurokawa et al, 2005;Muruzá bal et al, 2002;Mustonen et al, 2002;Nieminen et al, 2003) and in salmon adipocytes (Vegusdal et al, 2003). Several leptin roles were suggested in fish (Peyon et al, 2001;Volkoff et al, 2003;Weil et al, 2003), but its involvement in food intake and body weight is still controversial due to support by various authors (De Pedro et al, 2006;Ferrando et al, 2009;Volkoff et al, 2003) and denied by others (Baker et al, 2000;Silverstein and Plisetskaya, 2000;Londraville and Duvall, 2002).…”

Section: Introductionmentioning

confidence: 99%

Leptin‐like immunoreactivity in the muscle of juvenile sea bass (Dicentrarchus labrax)

Gambardella

Ferrando

Gallus

et al. 2010

Microscopy Res & Technique

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The mammalian hormone, leptin, is mainly synthesized in adipose tissue along with other tissues. Leptin plays a role in numerous processes such as in the control of food intake, homeostasis, immune function and reproduction. In this study, we detected and localized leptin immunoreactivity to the muscle of early juvenile sea bass (Dicentrarchus labrax) by Western blot analysis and immunohistochemistry. A leptin immunopositive band with a molecular weight of approximately 16 kDa, corresponding to mammalian leptin, was identified in trunk skeletal muscle homogenate. Furthermore, leptin immunopositive cells were detected in the endomysium of skeletal muscular fibers. These cells showed immunostained cytoplasmic granules and roundish and oval nuclei. The most intense immunostaining was observed in the endomysial space among the superficial red muscular fibers of the trunk. These findings suggest that in early juvenile sea bass, leptin is mostly produced by skeletal muscles. Therefore, during the developmental stage lacking adipose tissue, skeletal muscles can be considered an important source of leptin. As already suggested in mammals, we can hypothesize the potential roles of leptin not only in energy expenditure for muscle contraction but also during muscle differentiation and growth.

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An immunohistochemical study on the neuroendocrine system in the alimentary canal of the brown trout, Salmo trutta, L., 1758

Cited by 54 publications

References 57 publications

Immunohistochemical study of the digestive tract ofOligosarcus hepsetus

Immunohistochemical study of the digestive tract ofOligosarcus hepsetus

Histochemical and immunohistochemical study on endocrine cells (5HT, GAS, and SST) of the gastrointestinal tract of a teleost, the characin Astyanax bimaculatus

Leptin‐like immunoreactivity in the muscle of juvenile sea bass (Dicentrarchus labrax)

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