Search Results - "Spessert, R."

Evidence for synergistic and complementary roles of Bassoon and darkness in organizing the ribbon synapse by Spiwoks-Becker, I, Lamberti, R, tom Dieck, S, Spessert, R

“…Highlights ► Darkness and Bassoon complementarily organize the ribbon synapse. ► Darkness induces the initial tethering of synaptic ribbons (SRs) to the…”
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Daily Profile in Melanopsin Transcripts Depends on Seasonal Lighting Conditions in the Rat Retina by Mathes, A., Engel, L., Holthues, H., Wolloscheck, T., Spessert, R.

“…The retinal photopigment melanopsin (Opn4) mediates photoentrainment of the circadian system. In the present study, seasonal regulation of the melanopsin gene…”
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Molecular components and mechanism of adrenergic signal transduction in mammalian pineal gland: regulation of melatonin synthesis by Gupta, B B P, Spessert, R, Vollrath, L

“…Rhythmic neural outputs from the hypothalamic suprachiasmatic nucleus (SCN), which programme the rhythmic release of norepinephrine (NE) from intrapineal nerve…”
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Cyclic AMP-inducible genes respond uniformly to seasonal lighting conditions in the rat pineal gland by Spessert, R., Gupta, B.B.P., Rohleder, N., Gerhold, S., Engel, L.

“…The encoding of photoperiodic information ensues in terms of the daily profile in the expression of cyclic AMP (cAMP)-inducible genes such as the…”
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Fos-related antigen 2 (Fra-2) memorizes photoperiod in the rat pineal gland by Engel, L., Gupta, B.B.P., Lorenzkowski, V., Heinrich, B., Schwerdtle, I., Gerhold, S., Holthues, H., Vollrath, L., Spessert, R.

“…As the physiological role of fos-related antigen-2 (Fra-2) is largely unknown and since the pineal plays an important role in the photoperiodic control of the…”
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Circadian rhythm in NO synthase I transcript expression and its photoperiodic regulation in the rat pineal gland by Spessert, Rainer, Rapp, Maria

“…The photoneural regulation of nitric oxide synthase type I (NOS I) expression in the rat pineal was investigated using semiquantitative RT-PCR. NOS I…”
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Fixation conditions affect the intensity but not the pattern of NADPH- diaphorase staining as a marker for neuronal nitric oxide synthase in rat olfactory bulb by Spessert, R, Layes, E

“…NADPH-diaphorase (NADPH-d) is commonly used as a histochemical marker for the neuronal form of the enzyme nitric oxide synthase (NOS). A recent biochemical…”
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NADPH-diaphorase activity of nitric oxide synthase in the olfactory bulb: co-factor specificity and characterization regarding the interrelation to NO formation by Spessert, R, Wohlgemuth, C, Reuss, S, Layes, E

“…The neuronal form of the enzyme nitric oxide synthase (nNOS) synthesizes the messenger molecule nitric oxide (NO). In addition to NO formation, nNOS exhibits a…”
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Serine/Threonine Phosphatase Inhibitors Decrease Adrenergic Arylalkylamine N-Acetyltransferase Induction in the Rat Pineal Gland by Spessert, R., Rapp, M., Vollrath, L.

“…Adrenergic regulation of the pineal enzyme serotonin N‐acetyltransferase [arylalkylamine N‐acetyltransferase (AA‐NAT); EC 2.3.1.87] accounts for the circadian…”
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No short-term effects of high-frequency electromagnetic fields on the mammalian pineal gland by Vollrath, L., Spessert, R., Kratzsch, T., Keiner, M., Hollmann, H.

“…There is ample experimental evidence that changes of earth‐strength static magnetic fields, pulsed magnetic fields, or alternating electric fields (60 Hz)…”
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In the Rat Pineal Gland, but Not in the Suprachiasmatic Nucleus, the Amount of Constitutive Neuronal Nitric Oxide Synthase Is Regulated by Environmental Lighting Conditions by Spessert, R., Layes, E., Schollmayer, A., Reuss, S., Vollrath, L.

“…To investigate whether the expression of neuronal isoform of nitric oxide synthase is photoneurally regulated, we examined the amount of the enzyme by means of…”
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Diabetic Goto Kakizaki rats as well as type 2 diabetic patients show a decreased diurnal serum melatonin level and an increased pancreatic melatonin-receptor status by Peschke, Elmar, Frese, Thomas, Chankiewitz, Erik, Peschke, Dorothee, Preiss, Uwe, Schneyer, Ulrich, Spessert, Rainer, Mühlbauer, Eckhard

“…:  There are functional inter‐relationships between the beta cells of the endocrine pancreas and the pineal gland, where the synchronizing circadian molecule…”
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Oligosaccharide side chains of wall molecules are essential for cell-wall lysis in Chlamydomonas reinhardtii by Waffenschmidt, S., Spessert, R., Jaenicke, L.

“…The glycoproteins of the cell walls of Chlamydomonas are lysed during the reproductive cycle by proteases (autolysins) which are specific for their substrates…”
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Daily oscillation of gene expression in the retina is phase-advanced with respect to the pineal gland by Bai, Lin, Zimmer, Sybille, Rickes, Oliver, Rohleder, Nils, Holthues, Heike, Engel, Lydia, Leube, Rudolf, Spessert, Rainer

“…Abstract The photoreceptive retina and the non-photoreceptive pineal gland are components of the circadian and the melatonin forming system in mammals. To…”
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Circadian gene expression patterns of melanopsin and pinopsin in the chick pineal gland by Holthues, Heike, Engel, Lydia, Spessert, Rainer, Vollrath, Lutz

“…The directly light-sensitive chick pineal gland contains at least two photopigments. Pinopsin seems to mediate the acute inhibitory effect of light on…”
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In vitro effects of putative neurotransmitters on synaptic ribbon numbers and N-acetyltransferase activity in the rat pineal gland by GUPTA, B. B. P, SEIDEL, A, SPESSERT, R, BÜTTNER, W, KLAUKE, N, SPANIER, J, WEBER, A, ZIEMER, D, VOLLRATH, L

“…We have investigated in vitro effects of a number of classical neurotransmitters and neuropeptides. NAT activity was used to monitor melatonin synthesis under…”
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Expression of nicotinic acetylcholine receptors in the rat superior cervical ganglion on mRNA and protein level by Klimaschewski, L, Reuss, S, Spessert, R, Lobron, C, Wevers, A, Heym, C, Maelicke, A, Schröder, H

“…The expression of nicotinic acetylcholine receptors (nAChR) in the rat superior cervical ganglion was investigated by Western blotting, immunohistochemistry…”
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Arylalkylamine N-acetyltransferase gene expression in retina and pineal gland of rats under various photoperiods by Engel, Lydia, Vollrath, Lutz, Spessert, Rainer

“…The present study examines how the circadian oscillators in the retina and the suprachiasmatic nucleus (SCN) respond to changes in photoperiod. Arylalkylamine…”
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Vasoactive intestinal peptide stimulation of cyclic guanosine monophosphate formation: further evidence for a role of nitric oxide synthase and cytosolic guanylate cyclase in rat pinealocytes by Spessert, R

“…In the rat pineal gland vasoactive intestinal peptide (VIP) and beta-adrenergic agonists stimulate cyclic guanosine monophosphate (cGMP) formation and their…”
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The photoperiod entrains the molecular clock of the rat pineal by Engel, Lydia, Lorenzkowski, Verena, Langer, Christina, Rohleder, Nils, Spessert, Rainer

“…The suprachiasmatic nucleus‐pineal system acts as a neuroendocrine transducer of seasonal changes in the photoperiod by regulating melatonin formation. In the…”
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