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salivary amylase

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https://www.readbyqxmd.com/read/28637032/investigation-of-an-immediate-effect-of-bright-light-on-oxygen-consumption-heart-rate-cortisol-and-%C3%AE-amylase-in-seasonal-affective-disorder-subjects-and-healthy-controls
#1
Iana A Ivanova, Konstantin V Danilenko, Lyubomir I Aftanas
BACKGROUND: Body (fat) mass has been shown to decrease following bright light treatment for overweight women, irrespective of their seasonal (light) dependence. It is not known if this is due to an (immediate) increase of metabolism. METHODS: Ten women with seasonal affective disorder (SAD) and 10 non-SAD women matched by age, body mass index, and menopausal status participated in a laboratory study in the morning, twice within 1-5 days. During one session, bright light (4,300 lx) was presented for 30 min, and during the other session, red light (250 lx "placebo") was used...
June 22, 2017: Neuropsychobiology
https://www.readbyqxmd.com/read/28627308/hormonal-and-neuromuscular-responses-to-breastfeeding-a-pilot-study
#2
Madalynn Neu, Zhaoxing Pan, Ashley Haight, Karen Fehringer, Katrina Maluf
OBJECTIVES: Difficult breastfeeding in the first weeks after birth may result in muscle tension in infants and activation of the maternal hypothalamic-pituitary-adrenal (HPA) axis and sympathetic nervous system (SNS). Our primary objective was to examine the feasibility of collecting neuroendocrine markers of maternal HPA axis and SNS activation (salivary cortisol and α-amylase [sAA]) and electromyographic (EMG) markers of infant distress during feeding in the first 2 weeks after birth...
July 2017: Biological Research for Nursing
https://www.readbyqxmd.com/read/28613965/effect-of-saliva-collection-methods-and-oral-hygiene-on-salivary-biomarkers
#3
Allisson Benatti Justino, Renata Roland Teixeira, Leonardo Gomes Peixoto, Olga Lucia Bocanegra Jaramillo, Foued Salmen Espindola
The aim of this study was to evaluate the influence of unstimulated and stimulated saliva collection methods, as well as tooth brushing, on the secretion rate of salivary total protein, nitrite, total antioxidant capacity and alpha-amylase. Saliva of 14 healthy individuals were collected with stimulation using Salivette(®), Parafilm(®) and chewing gum and without stimulation from spit with and without fluid accumulation, before and after oral hygiene. Total protein, nitrite, total antioxidant capacity and alpha-amylase concentration (sAA) were evaluated...
June 14, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28605974/hplc-method-for-measurement-of-human-salivary-%C3%AE-amylase-inhibition-by-aqueous-plant-extracts
#4
István Takács, Ákos Takács, Anikó Pósa, Gyöngyi Gyémánt
Control of hyperglycemia is an important treatment in metabolic disorders such as type II diabetes and obesity. α-Amylase, as the first enzyme of glucose release from dietary polysaccharides, is a potential target to identify new sources of novel anti-obesity and anti-diabetic drugs. In this work, different herbal extracts as α-amylase inhibitors were studied by measuring the rate of the cleavage of a maltooligomer substrate 2-chloro-4-nitrophenyl-β-D-maltoheptoside. Measurement of chromophore containing products after reversed phase HPLC separation was used for α-amylase activity measurement...
June 2017: Acta Biologica Hungarica
https://www.readbyqxmd.com/read/28589038/inhibition-of-%C3%AE-amylases-by-condensed-and-hydrolysable-tannins-focus-on-kinetics-and-hypoglycemic-actions
#5
Camila Gabriel Kato, Geferson de Almeida Gonçalves, Rosely Aparecida Peralta, Flavio Augusto Vicente Seixas, Anacharis Babeto de Sá-Nakanishi, Lívia Bracht, Jurandir Fernando Comar, Adelar Bracht, Rosane Marina Peralta
The aim of the present study was to compare the in vitro inhibitory effects on the salivary and pancreatic α-amylases and the in vivo hypoglycemic actions of the hydrolysable tannin from Chinese natural gall and the condensed tannin from Acacia mearnsii. The human salivary α-amylase was more strongly inhibited by the hydrolysable than by the condensed tannin, with the concentrations for 50% inhibition (IC50) being 47.0 and 285.4 μM, respectively. The inhibitory capacities of both tannins on the pancreatic α-amylase were also different, with IC50 values being 141...
2017: Enzyme Research
https://www.readbyqxmd.com/read/28568243/rethinking-the-starch-digestion-hypothesis-for-amy1-copy-number-variation-in-humans
#6
EDITORIAL
Catalina I Fernández, Andrea S Wiley
Alpha-amylase exists across taxonomic kingdoms with a deep evolutionary history of gene duplications that resulted in several α-amylase paralogs. Copy number variation (CNV) in the salivary α-amylase gene (AMY1) exists in many taxa, but among primates, humans appear to have higher average AMY1 copies than nonhuman primates. Additionally, AMY1 CNV in humans has been associated with starch content of diets, and one known function of α-amylase is its involvement in starch digestion. Thus high AMY1 CNV is considered to result from selection favoring more efficient starch digestion in the Homo lineage...
June 1, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28566632/anti-stress-effect-of-green-tea-with-lowered-caffeine-on-humans-a-pilot-study
#7
Keiko Unno, Hiroshi Yamada, Kazuaki Iguchi, Hitoshi Ishida, Yasunori Iwao, Akio Morita, Yoriyuki Nakamura
Theanine, an amino acid in tea, has significant anti-stress effects on animals and humans. However, the effect of theanine was blocked by caffeine and gallate-type catechins, which are the main components in tea. We examined the anti-stress effect of green tea with lowered caffeine, low-caffeine green tea, on humans. The study design was a single-blind group comparison and participants (n=20) were randomly assigned to low-caffeine or placebo tea groups. These teas (≥500 mL/d), which were eluted with room temperature water, were taken from 1 week prior to pharmacy practice and continued for 10 d in the practice period...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28556577/clinical-and-neurobiological-effects-of-aerobic-exercise-in-dental-phobia-a-randomized-controlled-trial
#8
Brigitt L Lindenberger, Jens Plag, Sarah Schumacher, Katharina Gaudlitz, Sophie Bischoff, Thomas Bobbert, Fernando Dimeo, Moritz B Petzold, Clemens Kirschbaum, Zsuzsa Dudás, Andreas Ströhle
BACKGROUND: Physical activity has shown to be effective in anxiety disorders. For specific phobia, no studies are available that systematically examined the effects of an aerobic exercise intervention on phobic fear within a randomized-controlled design. Therefore, we investigated the acute effect of a standardized aerobic training on clinical symptoms of dental phobia as well as on stress-related neurobiological markers. METHODS: Within a crossover design, 30 patients with dental phobia (mean age: 34...
May 26, 2017: Depression and Anxiety
https://www.readbyqxmd.com/read/28546677/longitudinal-and-immediate-effect-of-kundalini-yoga-on-salivary-levels-of-cortisol-and-activity-of-alpha-amylase-and-its-effect-on-perceived-stress
#9
Jocelyn N García-Sesnich, Mauricio Garrido Flores, Marcela Hernández Ríos, Jorge Gamonal Aravena
CONTEXT: Stress is defined as an alteration of an organism's balance in response to a demand perceived from the environment. Diverse methods exist to evaluate physiological response. A noninvasive method is salivary measurement of cortisol and alpha-amylase. A growing body of evidence suggests that the regular practice of Yoga would be an effective treatment for stress. AIMS: To determine the Kundalini Yoga (KY) effect, immediate and after 3 months of regular practice, on the perception of psychological stress and the salivary levels of cortisol and alpha-amylase activity...
May 2017: International Journal of Yoga
https://www.readbyqxmd.com/read/28539377/dietary-starch-intake-modifies-the-relation-between-copy-number-variation-in-the-salivary-amylase-gene-and-bmi
#10
Gull Rukh, Ulrika Ericson, Johanna Andersson-Assarsson, Marju Orho-Melander, Emily Sonestedt
Background: Studies have shown conflicting associations between the salivary amylase gene (AMY1) copy number and obesity. Salivary amylase initiates starch digestion in the oral cavity; starch is a major source of energy in the diet.Objective: We investigated the association between AMY1 copy number and obesity traits, and the effect of the interaction between AMY1 copy number and starch intake on these obesity traits.Design: We first assessed the association between AMY1 copy number (genotyped by digital droplet polymerase chain reaction) and obesity traits in 4800 individuals without diabetes (mean age: 57 y; 60% female) from the Malmö Diet and Cancer Cohort...
May 24, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28521309/care-transitions-and-adult-day-services-moderate-the-longitudinal-links-between-stress-biomarkers-and-family-caregivers-functional-health
#11
Yin Liu, David M Almeida, Michael J Rovine, Steven H Zarit
BACKGROUND: Stress biomarkers have been linked to health and well-being. There are, however, few studies on how dysregulation in the hypothalamic-pituitary-adrenal axis and sympathetic nervous system actually affects functional health of family caregivers of persons with dementia. Further, it is not clear whether and how factors affecting caregiving stressor exposures such as care transitions and adult day services (ADS) use may affect such association. OBJECTIVE: First, to examine the association of daily stress biomarkers and functional health over time among family caregivers of persons with dementia...
May 19, 2017: Gerontology
https://www.readbyqxmd.com/read/28512552/ability-of-salivary-biomarkers-in-the-prognostic-of-systemic-and-buccal-inflammation
#12
REVIEW
Aida Gutiérrez-Corrales, Elena Campano-Cuevas, Gabriel Castillo-Dalí, Daniel Torres-Lagares, José-Luis Gutiérrez-Pérez
Nowadays, there is a growing interest in using saliva as an alternative sample for the diagnosis, prediction and progression of several diseases. It has been established that some molecules found in saliva are related to oral inflammatory processes and systemic health status. Furthermore, it is known that saliva is crucial for the carrying out of different functions in the oral cavity and its role in the local modulation of inflammatory and immune response is being thoroughly studied by the health research community...
May 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28511885/salivary-changes-in-type-2-diabetic-patients
#13
Sabah E Abd-Elraheem, Amany Mohammed El Saeed, Hayam Hamza Mansour
OBJECTIVE: this study was conducted to determine the effect of type 2 diabetes mellitus on salivary secretion of glucose, amylase and immunoglobulin A levels and also to fined out if saliva could be used as anon invasive method to monitor glycaemic control in type 2 diabbetes. This study was conducted on 40 human subjectes, They were 20 males and 20 females, their ages ranged from 35 years to 64 years,and they were divided into two groups, the first one is the patient group which contains 20 diabetic paient...
April 23, 2017: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/28481016/stress-response-and-communication-in-surgeons-undergoing-training-in-endoscopic-management-of-major-vessel-hemorrhage-a-mixed-methods-study
#14
Alistair K Jukes, Annika Mascarenhas, Jae Murphy, Lia Stepan, Tamara N Muñoz, Claudio A Callejas, Rowan Valentine, P J Wormald, Alkis J Psaltis
BACKGROUND: Major vessel hemorrhage in endoscopic, endonasal skull-base surgery is a rare but potentially fatal event. Surgical simulation models have been developed to train surgeons in the techniques required to manage this complication. This mixed-methods study aims to quantify the stress responses the model induces, determine how realistic the experience is, and how it changes the confidence levels of surgeons in their ability to deal with major vascular injury in an endoscopic setting...
June 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28476991/zno-nanoparticles-and-their-acarbose-capped-nanohybrids-as-inhibitors-for-human-salivary-amylase
#15
Firdoz Shaik, Anil Kumar
The authors report a controlled synthesis of biocompatible ZnO and acarbose-capped nanohybrids, and examined the inhibition activities of these nanosystems with human salivary α-amylase (HSA) activity. XRD measurements reveal ZnO present in wurtzite phase with hexagonal structure. The average size of ZnO particles for the two studied nanosystems was estimated to lie between 10 to 12 nm using Scherrer equation. These particles depict the onset of absorption at about 320 nm and the band-gap emission at about 370 nm, which are fairly blue shifted as compared with the bulk ZnO and have been understood due to the size quantisation effect...
April 2017: IET Nanobiotechnology
https://www.readbyqxmd.com/read/28475465/food-restriction-alters-salivary-cortisol-and-%C3%AE-amylase-responses-to-a-simulated-weightlifting-competition-without-significant-performance-modification
#16
Alexandre Durguerian, Edith Filaire, Catherine Drogou, Clément Bougard, Mounir Chennaoui
The aim of this investigation was to evaluate the effect of a 6-day food restriction period on the physiological responses and performance of 11 high-level weightlifters. After a period of weight maintenance (T2), they were assigned into two groups depending on whether they lost (Diet group, n = 6) or maintained their body weight (Control group, n = 5) during the course of those 6 days. An evaluation of performance and the measurement of salivary cortisol concentrations and salivary α-amylase (sAA) activity were performed during a simulated weightlifting competition which took place at T2, after a 6-day period of food restriction (T3)...
May 5, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28472693/salivary-alpha-amylase-and-noradrenaline-responses-to-corticotropin-releasing-hormone-administration-in-humans
#17
Liubov Petrakova, Karoline Boy, Lisa Mittmann, Lars Möller, Harald Engler, Manfred Schedlowski
Salivary alpha-amylase (sAA) is a digestive enzyme mainly responsible for the hydrolysis of starch and glycogen in the oral cavity. Since the secretion of sAA is largely under the control of the sympathetic nervous system, sAA activity is also considered to be a non-invasive marker of sympathetic activation. However, the direct association between sAA activity and other sympathetic parameters remains questionable. Therefore, we employed the corticotropin-releasing hormone (CRH) stimulation test to pharmacologically activate the sympathetic nervous system and to analyze plasma noradrenaline response together with sAA activity...
May 1, 2017: Biological Psychology
https://www.readbyqxmd.com/read/28469817/no-relationship-between-baseline-salivary-alpha-amylase-and-state-trait-anxiety-inventory-score-in-drug-na%C3%A3-ve-patients-with-short-illness-duration-first-episode-major-depressive-disorder-an-exploratory-study
#18
Joanna Szarmach, Wiesław-Jerzy Cubała, Jerzy Landowski, Anna Chrzanowska
BACKGROUND: Salivary α-amylase (sAA) activity alternations are observed in major depressive disorder (MDD) being associated with depression severity and its specific psychopathological dimensions with anxiety being attributed to distress. No data is available on sAA in MDD according to Hamilton Rating Scale for Depression (HAMD-17) and State-Trait Anxiety Inventory (STAI). The exploratory study examines whether and to what extent baseline sAA level is interrelated to the psychopathological features including severity of symptoms and specific psychopathological dimensions...
April 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28467021/change-in-oral-health-status-associated-with-menopause-in-japanese-dental-hygienists
#19
N Yoshida, K Sugimoto, S Suzuki, H Kudo
OBJECTIVES: Oral symptoms such as xerostomia and burning mouth syndrome have been recognized to increase associated with menopause. The purpose of this study was to clarify the changes in oral health as well as systemic health due to menopause and their relations with hormonal change and mental status. METHODS: Ninety-seven female dental hygienists aged 40-59 years were assigned to premenopausal, menopausal and post-menopausal groups based on self-reported menstrual condition...
May 3, 2017: International Journal of Dental Hygiene
https://www.readbyqxmd.com/read/28466664/increasing-levels-of-saliva-alpha-amylase-in-electrohypersensitive-ehs-patients
#20
Soafara Andrianome, Laurent Hugueville, René de Seze, Brahim Selmaoui
PURPOSE: To assess the level of various salivary and urinary markers of patients with electromagnetic hypersensitivity (EHS) and to compare them with those of a healthy control group. MATERIALS AND METHODS: We analyzed samples from 30 EHS individuals and a matched control group of 25 individuals (non-EHS) aged between 22 and 66. We quantified cortisol both in saliva and urine, alpha amylase (sAA), immunoglobulin A and C Reactive Protein levels in saliva and neopterin in urine (uNeopterin)...
May 17, 2017: International Journal of Radiation Biology
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