Results 181 to 190 of about 16,070 (212)
Some of the next articles are maybe not open access.
Determinants of the diurnal course of salivary alpha-amylase
Psychoneuroendocrinology, 2007Previous data from our group and others have shown that salivary alpha-amylase activity increases in response to stress. It has been suggested that salivary alpha-amylase may be a marker for adrenergic activity. Less is known about other determinants of salivary alpha-amylase activation.
Nicolas Rohleder +2 more
exaly +5 more sources
Human salivary alpha-amylase reactivity in a psychosocial stress paradigm
International Journal of Psychophysiology, 2005Biological indicators for stress reactions are valuable markers in psychophysiological research and clinical practice. Since the release of salivary enzyme alpha-amylase was reported to react to physiological and psychological stressors, we set out to investigate human salivary alpha-amylase changes employing a reliable laboratory stress protocol to ...
Nicolas Rohleder, Jens Gaab, Andreas Jud
exaly +4 more sources
Stress affects salivary alpha-Amylase activity in bonobos
Physiology & Behavior, 2012Salivary alpha-Amylase (sAA) is a starch digesting enzyme. In addition to its function in the context of nutrition, sAA has also turned out to be useful for monitoring sympathetic nervous system activity. Recent studies on humans have found a relationship between intra-individual changes in sAA activity and physical and psychological stress. In studies
Behringer, V. +4 more
openaire +4 more sources
Human salivary alpha‐amylase Purification and amino acid composition
European Journal of Oral Sciences, 1970Abstract— Human salivary alpha‐amylase was purified by ammonium sulfate‐acetone precipitations, and residual impurities removed by adsorption chromatography on hydroxylapatite columns. Subsequent preparative disc electrophoresis indicated that parotid alpha‐amylase from one person was a single moiety, whereas alpha‐amylase from pooled, whole saliva was
A, Hensten-Pettersen +2 more
openaire +2 more sources
Substrate differentiation of human pancreatic and salivary alpha-amylases
The American Journal of Digestive Diseases, 1970To increase specificity in the clinical determination of amylase, the differential activities of human pancreatic and salivary amylases toward two different substrates—a Lintner soluble starch (LSS) and an insoluble, dyed starch, Amylose Azure (AA)—were investigated. A ratio of initial-velocity activities of Lintner soluble starch to Amylose Azure (LSS/
F F, Hall +4 more
openaire +2 more sources
Salivary alpha amylase levels in youths with anxiety disorders
Psychiatry Research, 2016It is suggested that salivary alpha-amylase (sAA) may be a marker of sympathoadrenal medullary system activity. Thus, it can be a possible relationship sAA and anxiety disorders. The aim of this study is to investigate sAA in children and adolescents with anxiety disorders and healthy controls.
Yorbik, Ozgur +5 more
openaire +2 more sources
Journal of biochemistry, 1990
Human non-salivary, non-pancreatic alpha-amylase (yHXA) is the gene product of a newly found human alpha-amylase gene expressed in yeast. Its mode of action on a fluorogenic derivative of p-nitrophenyl alpha-maltopentaoside, FG5P (FG-G-G-G-G-P), was examined at various pH values to elucidate the difference between yHXA and pancreatic or salivary alpha ...
K, Omichi +3 more
openaire +2 more sources
Human non-salivary, non-pancreatic alpha-amylase (yHXA) is the gene product of a newly found human alpha-amylase gene expressed in yeast. Its mode of action on a fluorogenic derivative of p-nitrophenyl alpha-maltopentaoside, FG5P (FG-G-G-G-G-P), was examined at various pH values to elucidate the difference between yHXA and pancreatic or salivary alpha ...
K, Omichi +3 more
openaire +2 more sources
Isoelectric variants of Macaca irus salivary alpha-amylase
Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1973Abstract 1. 1. Isoelectric fractionation (LKB 8101 and 8102 columns, ampholines pH 3–10 of alpha-amylase produced by cultures of paratoid and submandibular tissue from the Macca irus monkey showed up to four amylase fractions, irrespective of different purification steps. 2. 2.
openaire +2 more sources
Salivary Alpha Amylase Levels under Conditions of Extreme Examination Stress
Psychological Reports, 200811 healthy adult graduate students were studied on two separate occasions 2 wk. apart at the same time of day. Self-rating of perceived stress and serial measurements of salivary alpha-amylase levels were performed at T1 = 15 min. before, T2 = 1 min. before, T3= 1 min. after, and T4= 15 min. after an event.
Ng, V., Koh, D., Wee, A.
openaire +2 more sources
Salivary cortisol and alpha-amylase reactivity to taekwondo competition in children
European Journal of Applied Physiology, 2011The aim of this study was to evaluate the effects of an official taekwondo competition (three 1-min rounds with a 1-min recovery in-between) on heart rate (HR), salivary alpha-amylase (sAA), and salivary-free cortisol (sC) in children. Parental consent was obtained for 12 young (10.4 ± 0.2 years) male taekwondo athletes. Saliva sample were collected 15
Capranica L. +5 more
openaire +3 more sources