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Salivary biomarkers

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https://www.readbyqxmd.com/read/28342734/integration-of-microbiome-and-epigenome-to-decipher-the-pathogenesis-of-autoimmune-diseases
#1
REVIEW
Beidi Chen, Luxi Sun, Xuan Zhang
The interaction between genetic predisposition and environmental factors are of great significance in the pathogenesis and development of autoimmune diseases (AIDs). The human mucosa is the most frequent site that interacts with the exterior environment, and commensal microbiota at the gut and other human mucosal cavities play a crucial role in the regulation of immune system. Growing evidence has shown that the compositional and functional changes of mucosal microbiota are closely related to AIDs. Gut dysbiosis not only influence the expression level of Toll-like receptors (TLRs) of antigen presenting cells, but also contribute to Th17/Treg imbalance...
March 22, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/28339625/cystatin-s-a-candidate-biomarker-for-severity-of-submandibular-gland-involvement-in-sj%C3%A3-gren-s-syndrome
#2
Daniela Martini, Alessia Gallo, Serena Vella, Francesca Sernissi, Antonella Cecchettini, Nicoletta Luciano, Enza Polizzi, Pier Giulio Conaldi, Marta Mosca, Chiara Baldini
Objectives.: Salivary cystatin S is a defence protein mainly produced by submandibular glands and involved in innate oral immunity. This study aimed to verify whether cystatin S was diversely expressed in different disease subsets of primary Sjogren's syndrome (pSS) patients, defined on the basis of salivary flow [unstimulated salivary flow rate (USFR)], minor salivary gland (MSG) focus score and submandibular gland ultrasonography abnormalities. We also evaluated miR-126 and miR-335-5p expression in MSG biopsies to verify whether an aberrant regulation of cystatin S at the glandular level may influence its salivary expression...
February 16, 2017: Rheumatology
https://www.readbyqxmd.com/read/28337601/the-cortisol-awakening-response-mediates-the-relationship-between-acculturative-stress-and-self-reported-health-in-mexican-americans
#3
Antonio F Garcia, Kristin Wilborn, Deborah L Mangold
BACKGROUND: The assessment of acculturative stress as synonymous with acculturation level overlooks the dynamic, interactive, and developmental nature of the acculturation process. An individual's unique perception and response to a range of stressors at each stage of the dynamic process of acculturation may be associated with stress-induced alterations in important biological response systems that mediate health outcomes. Evidence suggests the cortisol awakening response (CAR) is a promising pre-clinical biomarker of stress exposure that may link acculturative stress to self-reported health in Mexican Americans...
March 23, 2017: Annals of Behavioral Medicine: a Publication of the Society of Behavioral Medicine
https://www.readbyqxmd.com/read/28324703/arousal-amplifies-biased-competition-between-high-and-low-priority-memories-more-in-women-than-in-men-the-role-of-elevated-noradrenergic-activity
#4
David Clewett, Michiko Sakaki, Ringo Huang, Shawn E Nielsen, Mara Mather
Recent findings indicate that emotional arousal can enhance memory consolidation of goal-relevant stimuli while impairing it for irrelevant stimuli. According to one recent model, these goal-dependent memory tradeoffs are driven by arousal-induced release of norepinephrine (NE), which amplifies neural gain in target sensory and memory processing brain regions. Past work also shows that ovarian hormones modulate activity in the same regions thought to support NE's effects on memory, such as the amygdala, suggesting that men and women may be differentially susceptible to arousal's dual effects on episodic memory...
February 24, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28319898/immunodetection-of-salivary-biomarkers-by-an-optical-microfluidic-biosensor-with-polyethylenimine-modified-polythiophene-c70-organic-photodetectors
#5
Tao Dong, Nuno Miguel Matos Pires
This work reports a novel optical microfluidic biosensor with highly sensitive organic photodetectors (OPDs) for absorbance-based detection of salivary protein biomarkers at the point of care. The compact and miniaturized biosensor has comprised OPDs made of polythiophene-C70 bulk heterojunction for the photoactive layer; whilst a calcium-free cathode interfacial layer, made of linear polyethylenimine, was incorporated to the photodetectors to enhance the low cost. The OPDs realized onto a glass chip were aligned to antibody-functionalized chambers of a poly(methyl methacrylate) microfluidic chip, in where immunogold-silver assays were conducted...
March 6, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28318170/-application-of-saliva-in-disease-diagnosis
#6
Cheng Xingqun, Zhou Xuedong, Xu Xin
Saliva is secreted by salivary glands and performs a variety of functions, including mouth cleaning and protection, antibacterial activity, and digestion. With the rapid progress in salivaomics, saliva became recognized as a potential pool of biological markers. Being a non-invasive and safe source, saliva is a potential substitute for blood in diagnosis and prognosis of diseases. This review summarizes the latest advancement in saliva-related studies and presents the potential value of saliva in early diagnosis of oral diseases, such as dental caries, periodontal disease, cancer, diabetes, and other systemic disorders...
December 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28315649/comparison-of-saliva-collection-methods-for-the-determination-of-salivary-cortisol-levels-in-rhesus-macaques-macaca-mulatta-cynomolgus-macaques-macaca-fascicularis-and-african-green-monkeys-chlorocebus-aethiops
#7
Kamala J Rapp-Santos, Louis A Altamura, Sarah L Norris, Luis A Lugo-Roman, Pedro J Rico, Christian C Hofer
The ability to quickly and accurately determine cortisol as a biomarker for stress is a valuable tool in assessing the wellbeing of NHP. In this study, 2 methods of collecting saliva (a commercial collection device and passive drool) and the resulting free salivary cortisol levels were compared with total serum cortisol concentration in rhesus macaques (Macaca mulatta), cynomolgus macaques (Macaca fascicularis) and African green monkeys (Chlorocebus aethiops) at 2 collection time points. Serum and salivary cortisol levels were determined using a competitive quantitative ELISA...
March 1, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28284048/short-communication-salivary-haptoglobin-and-chromogranin-a-as-non-invasive-markers-during-restraint-stress-in-pigs
#8
Yanping Huang, Zhiqing Liu, Weifeng Liu, Chao Yin, Le Ci, Ruqian Zhao, Xiaojing Yang
The objective of present study was to investigate changes in salivary components during restraint to identify potential markers of stress. Pigs were subjected to a nasal snare stress (Experiment 1) or an immobilization stress (Experiment 2) by being enclosed in a steel cage. Saliva was collected before, during and after the stress, respectively. Salivary cortisol, serum amyloid A (SAA), haptoglobin (HP), chromogranin A (CgA), amylase, K(+), Ca(2+) and lactoferrin content were detected. The results showed that in Experiment 1, HP and CgA content increased significantly at 10min during the restraint (P<0...
February 27, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28283891/the-potential-role-for-early-biomarker-testing-as-part-of-a-modern-multidisciplinary-approach-to-sj%C3%A3-gren-s-syndrome-diagnosis
#9
REVIEW
Kenneth A Beckman, Jodi Luchs, Mark S Milner, Julian L Ambrus
Sjögren's syndrome (SS) is a chronic and progressive multisystem autoimmune disease typically managed by rheumatologists. Diagnostic delays are common, due in large part to the non-specific and variable nature of SS symptoms and the slow progression of disease. The hallmark characteristics of SS are dry eye and dry mouth, but there are a broad range of other possible symptoms such as joint and muscle pain, skin rashes, chronic dry cough, vaginal dryness, extremity numbness or tingling, and disabling fatigue...
March 10, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28283209/predicting-novel-salivary-biomarkers-for-the-detection-of-pancreatic-cancer-using-biological-feature-based-classification
#10
Huan-Jun Liu, Yuan-Ying Guo, Du-Jun Li
AIM: The use of saliva as a diagnostic fluid enables non-invasive sampling and thus is a prospective sample for disease tests. This study fully utilized the information from the salivary transcriptome to characterize pancreatic cancer related genes and predict novel salivary biomarkers. METHODS: We calculated the enrichment scores of gene ontology (GO) and pathways annotated in Kyoto Encyclopedia of Genes and Genomes database (KEGG) for pancreatic cancer-related genes...
September 22, 2016: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28282148/alterations-in-the-salivary-proteome-and-n-glycome-of-sj%C3%A3-gren-s-syndrome-patients
#11
Steven C Hall, Maria E Hassis, Katherine E Williams, Matthew E Albertolle, Akraporn Prakobphol, Andrew B Dykstra, Megan Laurance, Katherine Ona, Richard K Niles, Namrata Prasad, Matthew Gormley, Caroline Shiboski, Lindsey A Criswell, H Ewa Witkowska, Susan J Fisher
We used isobaric mass tagging (iTRAQ) and lectin affinity capture mass spectrometry (MS)-based workflows for global analyses of parotid saliva (PS) and whole saliva (WS) samples obtained from patients diagnosed with primary Sjögren's Syndrome (pSS) who were enrolled in the Sjögren's International Collaborative Clinical Alliance (SICCA) as compared with two control groups. The iTRAQ analyses revealed up- and down-regulation of numerous proteins that could be involved in the disease process (e.g., histones) or attempts to mitigate the ensuing damage (e...
March 24, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28281909/positive-association-of-personal-distress-with-testosterone-in-opiate-addicted-patients
#12
Katrin Stange, Mathias Krüger, Eva Janke, Ralf Lichtinghagen, Stefan Bleich, Thomas Hillemacher, Annemarie Heberlein
BACKGROUND: Clinical studies report that substance addictions are associated with sociocognitive impairments. Regarding opiate addicted patients, the few existing studies point to deficits regarding empathic abilities. Previous research suggests that testosterone might be a relevant biomarker of these impairments. AIMS: We aimed to investigate whether opiate addicted patients show specific impairments in emotional (empathic concern, personal distress) and cognitive empathy compared to healthy controls...
March 10, 2017: Journal of Addictive Diseases
https://www.readbyqxmd.com/read/28278220/placental-hormone-profiles-as-predictors-of-preterm-birth-in-twin-pregnancy-a-prospective-cohort-study
#13
Hui Lim, Sioned Powell, Helen C Mcnamara, A Forbes Howie, Ann Doust, Maria E Bowman, Roger Smith, Jane E Norman, Sarah J Stock
OBJECTIVE: The objective of the study was to analyse placental hormone profiles in twin pregnancies to determine if they could be used to predict preterm birth. STUDY DESIGN: Progesterone, estradiol, estriol and corticotropin-releasing hormone were measured using competitive immunoassay and radioimmunoassay in serum and saliva samples of 98 women with twin pregnancies,at 3 or more gestational timepoints. Hormone profiles throughout gestation were compared between very preterm (<34 weeks; n = 8), preterm (<37 weeks; n = 40) and term (37+ weeks; n = 50) deliveries...
2017: PloS One
https://www.readbyqxmd.com/read/28274061/comparative-analysis-of-salivary-alkaline-phosphatase-in-post-menopausal-women-with-and-without-periodontitis
#14
Khumukcham Sophia, Snophia Suresh, Uma Sudhakar, Parvathee Jayakumar, Danny Mathew
INTRODUCTION: Alkaline phosphatase is an intracellular destruction enzyme in the periodontium, and it takes part in the normal turnover of the periodontal ligament, alveolar bone, and root cementum formation and maintenance. AIM: The aim of this case control study was to evaluate the enzyme Alkaline Phosphatase (ALP) level in saliva of post menopausal women with and without chronic periodontitis. MATERIALS AND METHODS: In this study, 40 individuals, satisfying the study inclusion and exclusion criteria, were recruited...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28274046/can-salivary-acetylcholinesterase-be-a-diagnostic-biomarker-for-alzheimer
#15
Sedigheh Bakhtiari, Nahid Beladi Moghadam, Marjan Ehsani, Hamed Mortazavi, Siamak Sabour, Mahin Bakhshi
INTRODUCTION: The loss of brain cholinergic activity is a key phenomenon in the biochemistry of Alzheimer's Disease (AD). Due to the specific biosynthesis of Acetylcholinesterase (AChE) of cholinergic neurons, the enzyme has been proposed as a potential biochemical marker of cholinergic activity. AChE is expressed not only in the Central Nervous System (CNS), Peripheral Nervous System (PNS) and muscles, but also on the surface of blood cells and saliva. AIM: This study aimed to measure salivary AChE activity in AD and to determine the feasibility of creating a simple laboratory test for diagnosing such patients...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28269669/pca-criterion-for-svm-mlp-classifier-for-flavivirus-biomarker-from-salivary-sers-spectra-at-febrile-stage
#16
A R M Radzol, Khuan Y Lee, W Mansor, I S Omar
Non-structural protein (NS1) has been conceded as one of the biomarkers for flavivirus that causes diseases with life threatening consequences. NS1 is an antigen that allows detection of the illness at febrile stage, mostly from blood samples currently. Our work here intends to define an optimum model for PCA-SVM with MLP kernel for classification of flavivirus biomarker, NS1 molecule, from SERS spectra of saliva, which to the best of our knowledge has never been explored. Since performance of the model depends on the PCA criterion and MLP parameters, both are examined in tandem...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28264876/low-cotinine-glucuronidation-results-in-higher-serum-and-saliva-cotinine-in-african-american-compared-to-white-smokers
#17
Sharon E Murphy, Christopher J Sipe, Kwangsoo Choi, Leah M Raddatz, Joseph S Koopmeiners, Eric C Donny, Dorothy K Hatsukami
BACKGROUND: Tobacco exposure is often quantified by serum or saliva concentrations of the primary nicotine metabolite, cotinine. However, average cotinine concentrations are higher in African American (AA) compared to Whites with similar smoking levels. Cotinine is metabolized by UGT2B10 and CYP2A6, and low UGT2B10 activity is common in AA, due to the prevalence of a UGT2B10 splice variant. METHODS: UGT2B10-activity was phenotyped in 1446 smokers (34% AA) by measuring the percentage of cotinine excreted as a glucuronide...
March 6, 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/28259860/potential-salivary-biomarkers-and-their-genetic-effects-in-a-pilot-study-of-adolescent-boys-with-externalizing-problems
#18
Nora Angyal, Jozsef Halasz, Gergely Meszaros, Judit Krisztina Kovacs, Emese Kruk, Zsofia Nemoda
AIMS: Beside the well-known stress response marker cortisol, salivary alpha-amylase is receiving increasing attention. Numerous studies have investigated the potential biomarker properties of cortisol mirroring abnormal hypothalamic-pituitary-adrenal axis activity in connection to both internalizing and externalizing behavior problems. The other major physiological system involved in stress reactivity, the sympathetic nervous system activity can be also measured by the surrogate marker of salivary alpha-amylase...
December 2016: Neuropsychopharmacologia Hungarica
https://www.readbyqxmd.com/read/28256555/selection-characterization-and-application-of-artificial-dna-aptamer-containing-appended-bases-with-sub-nanomolar-affinity-for-a-salivary-biomarker
#19
Hirotaka Minagawa, Kentaro Onodera, Hiroto Fujita, Taiichi Sakamoto, Joe Akitomi, Naoto Kaneko, Ikuo Shiratori, Masayasu Kuwahara, Katsunori Horii, Iwao Waga
We have attained a chemically modified DNA aptamer against salivary α-amylase (sAA), which attracts researchers' attention as a useful biomarker for assessing human psychobiological and social behavioural processes, although high affinity aptamers have not been isolated from a random natural DNA library to date. For the selection, we used the base-appended base (BAB) modification, that is, a modified-base DNA library containing (E)-5-(2-(N-(2-(N6-adeninyl)ethyl))carbamylvinyl)-uracil in place of thymine. After eight rounds of selection, a 75 mer aptamer, AMYm1, which binds to sAA with extremely high affinity (Kd < 1 nM), was isolated...
March 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28256186/comparison-of-saliva-collection-methods-for-the-determination-of-salivary-cortisol-levels-in-rhesus-macaques-macaca-mulatta-cynomolgus-macaques-macaca-fascicularis-and-african-green-monkeys-chlorocebus-aethiops
#20
Kamala J Rapp-Santos Louis A Altamura Sarah L Norris Luis A Lugo-Roman Pedro J Rico And Christian C Hofer
The ability to quickly and accurately determine cortisol as a biomarker for stress is a valuable tool in assessing thewellbeing of NHP. In this study, 2 methods of collecting saliva (a commercial collection device and passive drool) and the resulting free salivary cortisol levels were compared with total serum cortisol concentration in rhesus macaques (Macaca mulatta),cynomolgus macaques (Macaca fascicularis) and African green monkeys (Chlorocebus aethiops) at 2 collection time points.Serum and salivary cortisol levels were determined using a competitive quantitative ELISA...
March 2, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
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