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| Sareen,Deepika; Agarwal,A. K.; Kaul,J. M.; Sethi,Ashwani. |
| For radical surgery of the past, the precise definition of the clefts of the paranasal sinuses was of limited significance. In the recent years, the transsphenoidal approach to the pituitary gland has come into practice and the study of the surgical anatomy and relationships of the sphenoid sinus has gained increased significance. To better define this anatomy, 20 sphenoid sinuses in cadavers were dissected to reveal important anatomical relationships, dimensions, volume and pneumatization of the sphenoid sinus. The results of the study are discussed with particular reference to the important surgical anatomical features of the sphenoid sinus. The results also point towards the possibility of racial variations in terms of relationships of the sphenoid... |
| Tipo: Journal article |
Palavras-chave: Sphenoid sinus; Anatomy; Paranasal sinuses; Pituitary gland. |
| Ano: 2005 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022005000300012 |
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| Srivastav,A.K; Rai,Rubi; Mishra,D; Srivastav,S. K; Suzuki,Nobuo. |
| Cadmium is an important metal for modern industrial processes and, being biologically non-essential, poses health hazards to the organisms. In this study we aimed to evaluate the effect of cadmium exposure on the histo-cytology of prolactin cells in the freshwater catfish, Heteropneustes (H.) fossilis. Fish were subjected to 288 mg/L (0.8 of 96 h LC50) and 72 mg/L (0.2 of 96 h LC50) of cadmium chloride for short-term and long-term, respectively. After sacrificing the fish, the blood was collected on 24, 48, 72 and 96 h in short-term and after 7, 14, 21, and 28 days in long-term experiment and analyzed for plasma calcium levels. Also, pituitary glands were fixed on these intervals. The plasma calcium levels of short-term cadmium exposed fish remain... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cadmium; Fish; Prolactin; Pituitary gland. |
| Ano: 2014 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432014000300002 |
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| Picanço-Diniz,D.L.W.; Valença,M.M.; Favaretto,A.L.V.; Antunes-Rodrigues,J.. |
| We investigated the effects of adenosine on prolactin (PRL) secretion from rat anterior pituitaries incubated in vitro. The administration of 5-N-methylcarboxamidoadenosine (MECA), an analog agonist that preferentially activates A2 receptors, induced a dose-dependent (1 nM to 1 µM) increase in the levels of PRL released, an effect abolished by 1,3-dipropyl-7-methylxanthine, an antagonist of A2 adenosine receptors. In addition, the basal levels of PRL secretion were decreased by the blockade of cyclooxygenase or lipoxygenase pathways, with indomethacin and nordihydroguaiaretic acid (NDGA), respectively. The stimulatory effects of MECA on PRL secretion persisted even after the addition of indomethacin, but not of NDGA, to the medium. MECA was unable to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adenosine; Prolactin; A2 receptor; Pituitary gland. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000700015 |
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