Showing papers by "Chandana Haldar published in 2002"

Treatise on pineal gland and melatonin

Abstract: Part 1 Structure: structure and function in the parietal-pineal complex of the lizard, Koji Ohshima comparative fine structural organization and histochemistry of the pineal organ, B. Vigh et al pineal synaptic ribbons - new from the retina, L. Voillrath and I. Spiwoks-Becker the structure of the pineal gland in domestic animals, V. Ramkrishna and Ashok Pawar fish pineal - structure, function and regulation, B.B.P. Gupta and Y. Premabati. Part 2 Functions: melatonin - an ubiquitous and evolutionary hormone, Ario Conti et al gastrointestinal melatonin - a Cinderella story of melatonin research, G.A. Bubenik melatonin from the past into the future - our own experience, Andrzej Lewinski et al rhythmic pineal melatonin production in birds, B. Mess and V. Csernus melatonin in the anuran amphibian larva and its reciprocal interactions with the thyroid gland, M.L. Wright the pineal gland and melatonin in domestic animals, N.H. Mohan bimodal effects of melatonin on the inflammatory reaction in young chickens, K. Skwarlo-Sonta et al pineal and glucoregulation in vertebrates with special emphasis on aves, A.V. Ramachandran pineal and lateral eyes in photo-thermal induced gonadal response in Indian catfish, Bechan Lal et al pineal gland and melatonin during gestation and foetal/neonatal development, C. Haldar and K.S. Bishnupuri pineal in the regulation of avian reproduction, S.K. Maitra et al re-entrainment of the mammalian circadian rhythm by melatonin, M. Singaravel et al pineal regulated adrenal-gonadal function in birds, C.C. Sudhakumari and C. Haldar. Part 3 Molecular mechanisms: application of the chromatographic technique to the analysis of melatonin and its related indoleamines, T.Harumi and S.R. Pandi-Perumal neuropeptidey, an important modulator of the noradrenergic input of the mammalian pineal gland, V. Simonneaux and C. Ribelayga neurochemistry and biology of melatonin oxidation, R. Hardeland and B. Poeggeler is NT the rate-limiting enzyme in melatonin synthesis?, Jimo Borjigin et al. Part 4 Clinical aspects: pinealities/uveitis - clinical and experimental perspectives, Carolyn M. Kalsow melatonin - psychiatric perspectives, C. Pacchierotti et al chronobiological, clinical and pharmacological aspects of melatonin in human circadian rhythm dysfunction, J.E. Nagtegaal et al pharmacological effects of melatonin in ion-channels, G. Panyi et al melatonin effects on cytoskeletal organization - implications for brain function and disease, G. Benitex-King et al slow wave sleep distribution and REM sleep eye movement density in delayed sleep phase syndrome on and off melatonin treatment, L. Kayumov et al apoptosis, cancer, immunity and melatonin, C. Haldar dual role of melatonin in humans - a hormone and a chronobiotic drug, B. Claustrat et al.

Seasonal Adreno-Cortical Cycle of a Nocturnal Bird, Indian Spotted Owlet Athene brama: Biochemical and Morphological Observations

Abstract: It is well reported that the environmental factors along with different endocrine stimulus play a crucial role in maintenance of adrenocortical activity in birds. This study is first to report a detailed seasonal activity cycle of adrenal cortex, particu-larly its secretory physiology in a tropical nocturnal bird, Indian spotted owlet Athene brama. The maximum cortical activity having highest glandular mass, glandular free cholesterol, esterified cholesterol profiles, and peak level of corticosterone in plasma coincided with the long day length, highest temperature and increasing amplitude of relative humidity and rainfall of the early summer month, May. Cortical activity declined to minimum level in August when the ecofactors also declined parallely and hence, the birds entered into partial hibernation. The cortical activity progressed slowly throughout the winter (September–March) to reach maximum level in May. Further, the electron microscopic observations of cortical cell morphology strongly supported...

Morphometric analysis of photoreceptive, neuronal and endocrinal cell differentiation of avian pineal cells: an in vitro immunohistochemical study on the developmental transition from neuronal to photo-endocrinal property.

Abstract: Little is known about the developmental origin, determination and differentiation of different pineal immunoreactive cells in the avian group, and an experimental establishment is then required to explain the differentiation of cell types (ie photosensory, neural and secretory types) The present in vitro study suggests that the avian pineal organ is made up of multiple types of cells with different immunoreactivity at the ontogenic state (from embryonic day 9 to day 14), before it acquires the final photoendocrinal nature of the mature state The morphometric analysis suggests that the developmental changes in the morphology of the quail pinealocytes appear to represent a condensed expression of the phylogenic development in the ontogeny Several types of immunoreactive cells from a neuronal line were suppressed with maturation of developing pineal glands, while other cell types such as photoreceptive and endocrinal lines became more prominent The melatonin level in the culture medium presented a high value up to 72 hr of culture, followed by a decrease as well as dampening of the level at the end of the culture possibly because the cultures were maintained in dark The results of the present study, a combined analysis of morphometry and RIA, open a new line for research into the pineal development and cell differentiation