Magic™ Mouse anti-CA125 MAb, HRP-Conjugated

Goblet cells within the conjunctival epithelium are specialized cells that secrete mucins onto the surface of the eye. Recent research has demonstrated new characteristics of the cells, including factors influencing their differentiation, their gene products and their functions at the ocular surface. The following review summarizes the newly discovered aspects of the role of Spdef, a member of the Ets transcription factor family in conjunctival goblet cell differentiation, the newly discovered goblet cell products including claudin2, the Wnt inhibitor Frzb, and the transmembrane mucin Muc16. The current concepts of conjunctival goblet cell function, including debris removal and immune surveillance are reviewed, as are changes in the goblet cell population in ocular surface diseases. Major remaining questions regarding conjunctival cell biology are discussed. (C) 2016 Elsevier Ltd. All rights reserved.

Noradrenaline (NA) is a catecholamine with multiple roles including as a hormone and a neurotransmitter. Cellular secretory activities are enhanced by adrenergic stimuli as well as by cholinergic stimuli. The present study aimed to determine which adrenoceptors play a role in controlling intracellular calcium ion ([Ca2+](i)) level in acinar cells of rat lacrimal glands. Expression of mRNA for adrenoceptor subtypes in the acinar cells was assessed using RT-PCR. All types except alpha 2c, beta 1, and beta 3 were detected. NA induced a [Ca2+](i) increase with a biphasic pattern in the acinar cells. Removal of extracellular Ca2+ and use of Ca2+-channel blockers did not inhibit the NA-induced [Ca2+](i) increases. In contrast, U73122 and suramin almost blocked these increases. The alpha 1-adrenoceptor agonist phenylephrine induced a strong increase in [Ca2+](i). However, clonidine and isoproterenol failed to induce a [Ca2+](i) increase. The peroxidase activity was quantified as a measure of mucin secretion. Ca2+-dependent exocytotic secretion of peroxidase was detected in rat lacrimal glands. The RT-PCR results showed that MUC1, MUC4, MUC5AC, MUC5B, and MUC16 were expressed in acinar cells. These findings indicated that NA activates alpha 1-adrenoceptors, which were found to be the main receptors in Ca2+-related cell homeostasis and protein (including mucin) secretion in lacrimal glands.