Search Results - "Bubenik, G."

Thirty four years since the discovery of gastrointestinal melatonin by Bubenik, G A

“…After the discovery of melatonin in the pineal gland by Lerner and co-workers in 1958, melatonin was also detected in the retina and the human appendix. Later,…”
Get more information

Melatonin and aging: prospects for human treatment by Bubenik, G A, Konturek, S J

“…Human life span, with or without modern medicine is around 85-95 years. All living creatures have their inner clock that measures their daily (circadian) and…”
Get more information

Role of melatonin in upper gastrointestinal tract by Konturek, S J, Konturek, P C, Brzozowski, T, Bubenik, G A

“…Melatonin, an indole formed enzymatically from L-tryptophan, is the most versatile and ubiquitous hormone molecule produced not only in all animals but also in…”
Get full text

Localization and biological activities of melatonin in intact and diseased gastrointestinal tract (GIT) by Konturek, S J, Konturek, P C, Brzozowska, I, Pawlik, M, Sliwowski, Z, Cześnikiewicz-Guzik, M, Kwiecień, S, Brzozowski, T, Bubenik, G A, Pawlik, W W

“…Melatonin (MT), an indole formed enzymatically from L-trytophan (Trp), was first discovered in the bovine pineal gland in 1958 by Lerner et al. Melatonin is…”
Get full text

Localization, physiological significance and possible clinical implication of gastrointestinal melatonin by Bubenik, G A

“…The gastrointestinal tract (GIT) is a major source of extrapineal melatonin. In some animals, tissue concentrations of melatonin in the GIT surpass blood…”
Get more information

Circadian variation of portal, arterial and venous blood levels of melatonin in pigs and its relationship to food intake and sleep by Bubenik, G.A., Pang, S.F., Cockshut, J.R., Smith, P.S., Grovum, L.W., Friendship, R.M., Hacker, R.R.

“…Circadian levels of melatonin were determined in the hepatic portal vein, cranial vena cava, and the lower aorta of ten juvenile pigs. Blood was sampled every…”
Get full text

Melatonin concentrations in serum and tissues of porcine gastrointestinal tract and their relationship to the intake and passage of food by Bubenik, G A, Pang, S F, Hacker, R R, Smith, P S

“…Melatonin concentrations were determined in serum and 10 segments of the gastrointestinal tract (GIT) of 48 pigs (100 kg weight). The animals were fasted for…”
Get more information

Enhanced mortality of rat pups following inductions of epileptic seizures after perinatal exposures to 5 nT, 7 Hz magnetic fields by St-Pierre, L.S., Parker, G.H., Bubenik, G.A., Persinger, M.A.

“…While investigating the effects of weak complex magnetic fields upon neuroplasticity following induction of early epilepsy, an unprecedented increase in…”
Get full text

Melatonin concentrations in the luminal fluid, mucosa, and muscularis of the bovine and porcine gastrointestinal tract by Bubenik, George A., Hacker, Roger R., Brown, Gregory M., Bartos, Ludek

“…: Melatonin concentrations were measured in serum, luminal fluid, and tissues of the mucosa and muscularis of the entire bovine and porcine gastrointestinal…”
Get full text

Chronomics, neuroendocrine feedsidewards and the recording and consulting of nowcasts—forecasts of geomagnetics by Jozsa, R., Halberg, F., Cornélissen, G., Zeman, M., Kazsaki, J., Csernus, V., Katinas, G.S., Wendt, H.W., Schwartzkopff, O., Stebelova, K., Dulkova, K., Chibisov, S.M., Engebretson, M., Pan, W., Bubenik, G.A., Nagy, G., Herold, M., Hardeland, R., Hüther, G., Pöggeler, B., Tarquini, R., Perfetto, F., Salti, R., Olah, A., Csokas, N., Delmore, P., Otsuka, K., Bakken, E.E., Allen, J., Amory-Mazaudin, C.

“…A multi-center four-hourly sampling of many tissues for 7 days (00:00 on April 5–20:00 to April 11, 2004), on rats standardized for 1 month in two rooms on…”
Get full text

The role of serotonin and melatonin in gastrointestinal physiology: ontogeny, regulation of food intake, and mutual serotonin-melatonin feedback by Bubenik, G A, Pang, S F

“…Average levels of melatonin in the brain and the gastrointestinal (GIT) tissues of newborn mice declined dramatically during the first week postnatally. Food…”
Get more information

Insidious weight gain in prepubertal seized rats treated with an atypical neuroleptic: The role of food consumption, fluid consumption, and spontaneous ambulatory activity by St-Pierre, L.S, Bubenik, G.A, Parker, G.H, Persinger, M.A

“…Abstract Extreme obesity slowly develops in female rats over the months following seizures induced by a single systemic injection of lithium and pilocarpine if…”
Get full text

Melatonin reduces the severity of dextran-induced colitis in mice by Pentney, P T, Bubenik, G A

“…Melatonin administration reduces the severity of dextran sodium sulphate (DSS)-induced colitis in mice. After 7 weeks of daily intraperitoneal melatonin…”
Get more information

Cyproterone acetate reduced antler growth in surgically castrated fallow deer by Bartos, L, Schams, D, Kierdorf, U, Fischer, K, Bubenik, GA, Siler, J, Losos, S, Tomanek, M, Lastovkova, J

“…We studied the role of androgens in antler growth. In particular, we investigated whether the onset of antler regrowth is triggered by a short-term pulse of…”
Get full text

Relationship between melatonin levels in plasma and gastrointestinal tissues and the incidence and severity of gastric ulcers in pigs by Bubenik, G.A., Ayles, H.L, Friendship, R.M., Brown, G.M., Ball, R.O.

“…Bubenik GA, Ayles HL, Friendship RM, Brown GM, and Ball RO. Relationship between melatonin levels in plasma and gastrointestinal tissues and the incidence and…”
Get full text

Chronomics affirm extending scope of lead in phase of duodenal vs. pineal circadian melatonin rhythms by Poeggeler, B., Cornélissen, G., Huether, G., Hardeland, R., Józsa, R., Zeman, M., Stebelova, K., Oláh, A., Bubenik, G., Pan, W., Otsuka, K., Schwartzkopff, O., Bakken, E.E., Halberg, F.

“…In Göttingen, Germany, circadian variations in melatonin had been determined time-macroscopically in pineal glands, blood plasma and duodenum of chicken and…”
Get full text

Chronomics: circadian lead of extrapineal vs. pineal melatonin rhythms with an infradian hypothalamic exploration by Zeman, M., Józsa, R., Cornélissen, G., Stebelova, K., Bubenik, G., Olah, A., Poeggeler, B., Huether, G., Hardeland, R., Nagy, G., Czernus, V., Pan, W., Otsuka, K., Halberg, F.

“…A circadian rhythm is documented for plasma, pineal, and hypothalamic melatonin of male and female rats kept on staggered lighting regimens…”
Get full text

Third Tony Bubenik Memorial Award by Bubenik, G. A.

Get full text

Chronomics reveal and quantify circadian rhythmic melatonin in duodenum of rats by Stebelova, K., Zeman, M., Cornélissen, G., Bubenik, G., Jozsa, R., Hardeland, R., Poeggeler, B., Huether, G., Olah, A., Nagy, G., Csernus, V., Kazsaki, J., Pan, W., Otsuka, K., Bakken, E.E., Halberg, F.

“…A circadian rhythm is documented in duodenal melatonin in rats, peaking 16.8 hours after light onset. This component is more readily detected after…”
Get full text

Testicular histology of cryptorchid black-tailed deer (Odocoileus hemionus sitkensis) of Kodiak island, Alaska by Bubenik, G. A., Jacobson, J. P.

“…Histological structure of intraabdominally located testes and epididymis of cryptorchid black-tailed deer (Odocoileus hemionus sitkensis) of Kodiak island,…”
Get full text