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salivary amylase

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https://www.readbyqxmd.com/read/28196342/decreased-salivary-alpha-amylase-levels-are-associated-with-performance-deficits-during-sleep-loss
#1
Maja Pajcin, Siobhan Banks, Jason M White, Jill Dorrian, Gemma M Paech, Crystal Grant, Kayla Johnson, Katie Tooley, Justin Fidock, Gary H Kamimori, Chris B Della Vedova
During sleep deprivation, neurobehavioral functions requiring sustained levels of attention and alertness are significantly impaired. Discrepancies between subjective measures of sleepiness and objective performance during sustained operations have led to interest in physiological monitoring of operator performance. Alertness, vigilance, and arousal are modulated by the wake-promoting actions of the central noradrenergic system. Salivary alpha-amylase (sAA) has been proposed as a sensitive peripheral measure of noradrenergic activity, but limited research has investigated the relationship between sAA and performance...
February 1, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28196341/suppressing-the-endocrine-and-autonomic-stress-systems-does-not-impact-the-emotional-stress-experience-after-psychosocial-stress
#2
Nida Ali, Jonas P Nitschke, Cory Cooperman, Jens C Pruessner
Acute psychosocial stress activates the physiological and endocrine stress systems and increases the subjective emotional experience of stress. While considerable efforts have been made to link changes in the activity of the biological stress systems with changes in the subjective emotional experience of stress, results so far have been mixed, at best. To investigate this association in a study employing experimental manipulation, we pharmacologically suppressed both the autonomic and the endocrine stress responses, and investigated the effects of acute psychosocial stress on the emotional stress experience...
January 28, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28193788/erratum-metabolomic-profile-of-low-copy-number-carriers-at-the-salivary-%C3%AE-amylase-gene-suggests-a-metabolic-shift-toward-lipid-based-energy-production-diabetes-2016-65-3362-3368
#3
Abdelilah Arredouani, Matteo Stocchero, Nicola Culeddu, Julia El-Sayed Moustafa, Jean Tichet, Beverley Balkau, Thierry Brousseau, Marco Manca, Mario Falchi
No abstract text is available yet for this article.
February 13, 2017: Diabetes
https://www.readbyqxmd.com/read/28185876/associations-between-food-consumption-patterns-and-saliva-composition-specificities-of-eating-difficulties-children
#4
Martine Morzel, Caroline Truntzer, Eric Neyraud, Hélène Brignot, Patrick Ducoroy, Géraldine Lucchi, Cécile Canlet, Ségolène Gaillard, Florian Nicod, Sophie Nicklaus, Noël Peretti, Gilles Feron
Identifying objective markers of diet would be beneficial to research fields such as nutritional epidemiology. As a preliminary study on the validity of using saliva for this purpose, and in order to explore the relationship between saliva and diet, we focused on clearly contrasted groups of children: children with eating difficulties (ED) receiving at least 50% of their energy intake through artificial nutrition vs healthy controls (C). Saliva of ED and C children was analyzed by various methods (targeted biochemical analyses, 2-D electrophoresis coupled to MS, (1)H NMR) and their diet was characterized using food frequency questionnaires, considering 148 food items grouped into 13 categories...
February 6, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28177057/salivary-cortisol-and-%C3%AE-amylase-subclinical-indicators-of-stress-as-cardiometabolic-risk
#5
S Cozma, L C Dima-Cozma, C M Ghiciuc, V Pasquali, A Saponaro, F R Patacchioli
Currently, the potential for cardiovascular (CV) stress-induced risk is primarily based on the theoretical (obvious) side effects of stress on the CV system. Salivary cortisol and α-amylase, produced respectively by the hypothalamus-pituitary-adrenal (HPA) axis and the sympathetic-adrenomedullary (SAM) system during stress response, are still not included in the routine evaluation of CV risk and require additional and definitive validation. Therefore, this article overviews studies published between 2010 and 2015, in which salivary cortisol and α-amylase were measured as stress biomarkers to examine their associations with CV/CMR (cardiometabolic risk) clinical and subclinical indicators...
February 6, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28167971/glucose-metabolic-changes-in-the-brain-and-muscles-of-patients-with-nonspecific-neck-pain-treated-by-spinal-manipulation-therapy-a-18-f-fdg-pet-study
#6
Akie Inami, Takeshi Ogura, Shoichi Watanuki, Md Mehedi Masud, Katsuhiko Shibuya, Masayasu Miyake, Rin Matsuda, Kotaro Hiraoka, Masatoshi Itoh, Arlan W Fuhr, Kazuhiko Yanai, Manabu Tashiro
Objective. The aim of this study was to investigate changes in brain and muscle glucose metabolism that are not yet known, using positron emission tomography with [(18)F]fluorodeoxyglucose ([(18)F]FDG PET). Methods. Twenty-one male volunteers were recruited for the present study. [(18)F]FDG PET scanning was performed twice on each subject: once after the spinal manipulation therapy (SMT) intervention (treatment condition) and once after resting (control condition). We performed the SMT intervention using an adjustment device...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28167436/the-physiological-and-emotional-effects-of-touch-assessing-a-hand-massage-intervention-with-high-self-critics
#7
Frances A Maratos, Joana Duarte, Christopher Barnes, Kirsten McEwan, David Sheffield, Paul Gilbert
Research demonstrates that highly self-critical individuals can respond negatively to the initial introduction of a range of therapeutic interventions. Yet touch as a form of therapeutic intervention in self-critical individuals has received limited prior investigation, despite documentation of its beneficial effects for well-being. Using the Forms of Self-Criticism/Self-Reassuring Scale, 15 high- and 14 low- self-critical individuals (from a sample of 139 females) were recruited to assess how self-criticism impacts upon a single instance of focused touch...
January 25, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28161544/purification-and-characterization-of-peptides-from-capsicum-annuum-fruits-which-are-%C3%AE-amylase-inhibitors-and-exhibit-high-antimicrobial-activity-against-fungi-of-agronomic-importance
#8
Layrana de Azevedo Dos Santos, Gabriel Bonan Taveira, Suzanna de Fátima Ferreira Ribeiro, Lídia da Silva Pereira, André de Oliveira Carvalho, Rosana Rodrigues, Antônia Elenir Amâncio Oliveira, Olga Lima Tavares Machado, Jucélia da Silva Araújo, Ilka Maria Vasconcelos, Valdirene Moreira Gomes
Proteins extracted from Capsicum annuum L. fruits were initially subjected to reversed-phase chromatography on HPLC, resulting in eight peptide-rich fractions. All the fractions obtained were tested for their ability to inhibit porcine trypsin and amylase from both human saliva and from larval insect in vitro. All fractions were also tested for their ability to inhibit growth of the phytopathogenic fungi. Several fractions inhibited the activity of human salivary amylase and larval insect amylase, especially fraction Fa5...
February 2, 2017: Protein Expression and Purification
https://www.readbyqxmd.com/read/28152431/blunted-cortisol-response-to-psychosocial-stress-in-atopic-patients-is-associated-with-decrease-in-salivary-alpha-amylase-and-aldosterone-focus-on-sex-and-menstrual-cycle-phase
#9
N Hlavacova, P Solarikova, M Marko, I Brezina, D Jezova
A decreased responsiveness of the hypothalamic-pituitary-adrenocortical axis to stress stimuli in patients with atopy is well documented. The aim of this study was to investigate personality traits, salivary alpha-amylase activity and the aldosterone response to psychosocial stress procedure based on public speech in atopic patients with respect to sex and the menstrual cycle (MC) phase. The study was performed in 106 subjects of both sexes, 53 atopic patients suffering from allergic rhinitis, allergic asthma or atopic dermatitis and 53 age-, sex-, the MC phase- and BMI- matched healthy controls...
January 16, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28150473/correlation-between-salivary-alpha-amylase-anxiety-and-game-records-in-the-archery-competition
#10
In Soo Lim
Purpose: This study was aimed to investigate the relationship between psychological and physiological changes and performance in archery, which is strongly influenced by psychological factors including concentration, tension, anxiety, and stress. Methods: A total of 19 athletes from women's colleges who participated in the 30 m individual competition at the 34th President's Cup National Archery Competition in July 2016 were included in this study. The anxiety levels of the participants were assessed on a 10-point Likert scale, with 1 corresponding to "not at all" and 10 to "extremely anxious...
December 31, 2016: Journal of Exercise Nutrition & Biochemistry
https://www.readbyqxmd.com/read/28133208/-a-case-of-primary-acinic-cell-carcinoma-acc-of-the-breast
#11
Hiroshi Kawai, Ryoma Sugimoto, Norichika Iga, Hirokuni Ikeda, Ryosuke Yoshida, Naohisa Waki, Masahiro Ishizaki, Hideyuki Nishi, Kazuki Yamashita
A49 -year-old woman presented with a 3.5 cm mass in her right breast. Mammography revealed a lobular mass with poorly defined margins and no microcalcification. Ultrasonography showed a hypoechoic mass with an irregular margin. The tumor was diagnosed as breast carcinoma using a core needle biopsy. The patient underwent a modified radical mastectomy with sentinel lymph node biopsy, and received adjuvant chemotherapy. The tumor consisted of 2 types of carcinoma. The center of the tumor was solid-tubular carcinoma, and the periphery was acinic cell carcinoma(ACC)...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28132053/mechanisms-linking-interparental-aggression-to-child-dental-caries
#12
M F Lorber, D J N Maisson, A M S Slep, R E Heyman, M S Wolff
Research has garnered support for a systemic view of factors affecting child dental caries that accounts for the influence of social factors such as the family environment. Our previous work has demonstrated the association between mother-to-father emotional aggression and child caries. The present study builds on these results by evaluating pathways that might explain this relation. Families (n = 135) completed a multimethod assessment of mother-to-father emotional aggression, child caries, and several hypothesized mediators (i...
January 28, 2017: Caries Research
https://www.readbyqxmd.com/read/28128662/salivary-alpha-amylase-dental-anxiety-and-extraction-pain-a-pilot-study
#13
Kevin C Lee, Jennifer P Bassiur
The primary intention of this study was to determine whether salivary alpha-amylase (sAA) factors or the Dental Anxiety Scale (DAS) was a better predictor of dental extraction pain. This study followed a cross-sectional design and included a convenience sample (n = 23) recruited from an outpatient oral surgery clinic. While waiting for their scheduled appointments, consenting patients completed both basic demographic/medical history questionnaires and Corah's DAS as well as submitted sublingual saliva samples...
2017: Anesthesia Progress
https://www.readbyqxmd.com/read/28125683/differences-in-amy1-gene-copy-numbers-derived-from-blood-buccal-cells-and-saliva-using-quantitative-and-droplet-digital-pcr-methods-flagging-the-pitfall
#14
Delicia Shu Qin Ooi, Verena Ming Hui Tan, Siong Gim Ong, Yiong Huak Chan, Chew Kiat Heng, Yung Seng Lee
INTRODUCTION: The human salivary (AMY1) gene, encoding salivary α-amylase, has variable copy number variants (CNVs) in the human genome. We aimed to determine if real-time quantitative polymerase chain reaction (qPCR) and the more recently available Droplet Digital PCR (ddPCR) can provide a precise quantification of the AMY1 gene copy number in blood, buccal cells and saliva samples derived from the same individual. METHODS: Seven participants were recruited and DNA was extracted from the blood, buccal cells and saliva samples provided by each participant...
2017: PloS One
https://www.readbyqxmd.com/read/28119068/differential-effects-of-eating-and-drinking-on-wellbeing-an-ecological-ambulatory-assessment-study
#15
Jana Strahler, Urs M Nater
INTRODUCTION: Various behaviors, such as physical activity and sleep, have been shown to have stress-reducing and beneficial effects on wellbeing. In contrast, the rewarding effects of eating and drinking have rarely been investigated, particularly using ecologically valid approaches, and little is known about mediating mechanisms on the biological level. METHODS: Seventy-seven healthy young adults completed items on eating and drinking as well as momentary wellbeing (measured by mood, energy, tension, stress and fatigue levels) on an iPod touch 5×/day for 4 consecutive days...
January 22, 2017: Biological Psychology
https://www.readbyqxmd.com/read/28112423/comparison-of-salivary-cortisol-and-%C3%AE-amylase-levels-and-psychological-profiles-in-patients-with-burning-mouth-syndrome
#16
Tahereh Nosratzehi, Saeedeh Salimi, Azadeh Parvaee
PURPOSE: The aim of the study was to compare salivary cortisol and α-amylase levels and psychological profiles in patients with burning mouth syndrome (BMS) and healthy subjects. METHODS AND MATERIALS: Spitting method was used to collect unstimulated salivary. Salivary cortisol and α-amylase levels were determined using ELISA and the Caraway starch-iodine technique. SLC-90 questionnaire was used to determine the psychological profiles. RESULTS: The difference between mean of salivary cortisol levels in patients with BMS and in healthy subjects was not significant (4...
January 23, 2017: Special Care in Dentistry
https://www.readbyqxmd.com/read/28107893/influence-of-stress-systems-and-physical-activity-on-different-dimensions-of-fatigue-in-female-fibromyalgia-patients
#17
Johanna M Doerr, Susanne Fischer, Urs M Nater, Jana Strahler
OBJECTIVE: Fatigue is a defining characteristic and one of the most debilitating features of fibromyalgia syndrome (FMS). The mechanisms underlying different dimensions of fatigue in FMS remain unclear. The aim of the current study was to test whether stress-related biological processes and physical activity modulate fatigue experience. METHODS: Using an ambulatory assessment design, 26 female FMS patients reported general, mental, and physical fatigue levels at six time points per day for 14 consecutive days...
February 2017: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/28105726/biological-stress-indicators-as-risk-markers-for-increased-alcohol-use-following-traumatic-experiences
#18
Sebastian Trautmann, Markus Muehlhan, Clemens Kirschbaum, Hans-Ulrich Wittchen, Michael Höfler, Tobias Stalder, Susann Steudte-Schmiedgen
Alcohol misuse is a common sequela of traumatic event experiences causing considerable morbidity and mortality. Although biological stress indicators have been identified as useful risk markers for the development of trauma-related disorders, no such biological indicators exist for the risk of increased alcohol use after trauma exposure. This is the first study to prospectively investigate the predictive value of long-term cortisol levels and acute stress reactivity for the risk of increased alcohol use following traumatic events...
January 20, 2017: Addiction Biology
https://www.readbyqxmd.com/read/28104242/preconception-stress-and-the-secondary-sex-ratio-in-a-population-based-preconception-cohort
#19
Jisuk Bae, Courtney D Lynch, Sungduk Kim, Rajeshwari Sundaram, Katherine J Sapra, Germaine M Buck Louis
OBJECTIVE: To examine the association between preconception parental stress and the secondary sex ratio, defined as the ratio of males to females at birth. DESIGN: A population-based preconception cohort. SETTING: Not applicable. PATIENT(S): A total of 235 couples who were enrolled before conception in Michigan and Texas between 2005 and 2009 and who had a singleton birth during the follow-up period. Couples were interviewed separately at baseline to obtain information on perceived stress (Cohen's Perceived Stress Scale) and lifetime history of physician-diagnosed anxiety and/or mood disorders...
January 16, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28101908/recurrent-rearrangements-of-human-amylase-genes-create-multiple-independent-cnv-series
#20
Nzar A A Shwan, Sandra Louzada, Fengtang Yang, John A L Armour
The human amylase gene cluster includes the human salivary (AMY1) and pancreatic amylase genes (AMY2A and AMY2B), and is a highly variable and dynamic region of the genome. Copy number variation of AMY1 has been implicated in human dietary adaptation, and in population association with obesity, but neither of these findings has been independently replicated. Despite these functional implications, the structural genomic basis of copy number variation (CNV) has only been defined in detail very recently. In this work we use high-resolution analysis of copy number, and analysis of segregation in trios, to define new, independent allelic series of amylase CNVs in sub-Saharan Africans, including a series of higher-order expansions of a unit consisting of one copy each of AMY1, AMY2A and AMY2B...
January 19, 2017: Human Mutation
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