beta-Adrenoceptor activation increases intracellular cAMP levels and consequently induces exocytotic amylase release in parotid acinar cells. Phosphodiesterase (PDE) catalyses the hydrolysis of cAMP, which terminates the downstream signaling of this second messenger. We investigated the involvement of PDE4, a cAMP-PDE, in beta-adrenoceptor agonist-induced amylase release in mouse, rat and rabbi...

The major salivary glands consist of the parotid, the submandibular, and the sublingual glands. Under the control of the parasympathetic nervous system, the major salivary glands are responsible for the principal portion of saliva produced, which can be as much as 1.5 liters per day. The minor salivary glands of the oral cavity, pharynx, and upper airways contribute only a small percentage of t...

Three normal volunteers, 58 normal patients, and three patients with parotid tumors were studied with a 0.3 T permanent-magnet imaging system to directly image the intraparotid facial nerve. On T1-weighted images the nerve appeared as a curvilinear structure of relatively low signal intensity within the fatty, high-signal parotid parenchyma. Its major divisions and branches could be imaged only...

KAKIZAKI, G., NOTO, N., ONUMA, T., SAITO, T. and Izuan, S. Experimental Study on the Correlation between the Pancreas and Parotid Gland. Tohoku J. exp. Med., 1971, 105 (3), 223-231 -Comparative histologic examination and measurement of amylase values in pancreas and parotid gland were made on thirteen rats of the control group and eight rats with experimentally produced acute pancreatitis. Hist...

Computed tomographic (CT) appearances of 18 surgically proven parotid tumors were studied. Digital radiography (GE, ScoutView) was performed to select the desired gantry angulations and then plain CT and CT combined with sialography were performed. Plain CT clearly showed parotid tumors in nine of the patients. CT combined with sialography was more helpful than plain CT for delineating the tumo...

BACKGROUND: Solitary extramedullary plasmacytoma of the parotid gland is a rare condition. Intracytoplasmic Crystalline inclusions in the tumor are even rarer and have been reported only once in the parotid gland. CASE PRESENTATION: We report here, a case of plasmacytoma of the parotid gland with intracellular crystalline inclusions in a 73-year-old woman CONCLUSION: Solitary extramedullary pla...

Tuberculosis of the parotid gland is an uncommon disease. In this study, we present primary parotid tuberculosis in two siblings. Two female siblings, of 16 and 14 years of age, presented with unilateral masses in the parotid region. Acid-fast bacilli were found in the aspiration fluid of the lesion. After the tuberculosis treatment, the patients were doing well. In this study, we discussed cli...

PURPOSE To review the CT and MR characteristics of temporal bone malignancy, and to evaluate the relationship between malignancies of the temporal bone and parotid gland. METHODS A group of 15 surgical patients with diagnosis of temporal bone malignancy were retrospectively reviewed. These included 11 cases of primary temporal bone malignancy and four cases of secondary carcinoma of the tempo...

A parotid gland hormone that stimulates intradentinal fluid movement is believed to play a significant role in maintaining the vitality of dentin. This hormone has been purified from porcine parotid glands and partially sequenced in our previous study (Tieche, J. M., Leonora, J., and Steinman, R. R. (1980) Endocrinology 106, 1994-2005). We now report the cloning and functional study of porcine ...