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Saliva biology

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https://www.readbyqxmd.com/read/28223859/histatin-peptides-pharmacological-functions-and-their-applications-in-dentistry
#1
REVIEW
Zohaib Khurshid, Shariq Najeeb, Maria Mali, Syed Faraz Moin, Syed Qasim Raza, Sana Zohaib, Farshid Sefat, Muhammad Sohail Zafar
There are many human oral antimicrobial peptides responsible for playing important roles including maintenance, repairing of oral tissues (hard or soft) and defense against oral microbes. In this review we have highlighted the biochemistry, physiology and proteomics of human oral histatin peptides, secreted from parotid and submandibular salivary glands in human. The significance of these peptides includes capability for ionic binding that can kill fungal Candida albicans. They have histidine rich amino acid sequences (7-12 family members; corresponding to residues 12-24, 13-24, 12-25, 13-25, 5-11, and 5-12, respectively) for Histatin-3...
January 2017: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/28219814/biopsychosocial-pathways-linking-subjective-socioeconomic-disadvantage-to-glycemic-control-in-youths-with-type-i-diabetes
#2
Samuele Zilioli, Deborah A Ellis, Justin M Carré, Richard B Slatcher
Older adolescent and young adults (OAYA) with type 1 diabetes (T1D) living in contexts of socio-economic disadvantage (SED) suffer disproportionately from poor glycemic control and related health complications. Although SED may convey a variety of risks, it may exacerbate diabetes-related stress levels, which in turn may account for observed disparities in health outcomes. The primary goal of the present study was to investigate the relationship between subjective SED, diabetes-related perceived stress, and diurnal cortisol secretion in urban OAYA with T1D...
February 3, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28217778/a-critical-insight-into-the-development-pipeline-of-microfluidic-immunoassay-devices-for-the-sensitive-quantitation-of-protein-biomarkers-at-the-point-of-care
#3
REVIEW
Ana I Barbosa, Nuno M Reis
The latest clinical procedures for the timely and cost-effective diagnosis of chronic and acute clinical conditions, such as cardiovascular diseases, cancer, chronic respiratory diseases, diabetes or sepsis (i.e. the biggest causes of death worldwide), involve the quantitation of specific protein biomarkers released into the blood stream or other physiological fluids (e.g. urine or saliva). The clinical thresholds are usually in the femtomolar to picolomar range, and consequently the measurement of these protein biomarkers heavily relies on highly sophisticated, bulky and automated equipment in centralised pathology laboratories...
February 20, 2017: Analyst
https://www.readbyqxmd.com/read/28194570/genetic-and-biochemical-changes-of-the-serotonergic-system-in-migraine-pathobiology
#4
REVIEW
Claudia Francesca Gasparini, Robert Anthony Smith, Lyn Robyn Griffiths
Migraine is a brain disorder characterized by a piercing headache which affects one side of the head, located mainly at the temples and in the area around the eye. Migraine imparts substantial suffering to the family in addition to the sufferer, particularly as it affects three times more women than men and is most prevalent between the ages of 25 and 45, the years of child rearing. Migraine typically occurs in individuals with a genetic predisposition and is aggravated by specific environmental triggers. Attempts to study the biochemistry of migraine began as early as the 1960s and were primarily directed at serotonin metabolism after an increase of 5-hydroxyindoleacetic acid (5-HIAA), the main metabolite of serotonin was observed in urine of migraineurs...
December 2017: Journal of Headache and Pain
https://www.readbyqxmd.com/read/28193177/anopheline-salivary-protein-genes-and-gene-families-an-evolutionary-overview-after-the-whole-genome-sequence-of-sixteen-anopheles-species
#5
Bruno Arcà, Fabrizio Lombardo, Claudio J Struchiner, José M C Ribeiro
BACKGROUND: Mosquito saliva is a complex cocktail whose pharmacological properties play an essential role in blood feeding by counteracting host physiological response to tissue injury. Moreover, vector borne pathogens are transmitted to vertebrates and exposed to their immune system in the context of mosquito saliva which, in virtue of its immunomodulatory properties, can modify the local environment at the feeding site and eventually affect pathogen transmission. In addition, the host antibody response to salivary proteins may be used to assess human exposure to mosquito vectors...
February 13, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28190454/somatic-map2k1-mutations-are-associated-with-extracranial-arteriovenous-malformation
#6
Javier A Couto, August Y Huang, Dennis J Konczyk, Jeremy A Goss, Steven J Fishman, John B Mulliken, Matthew L Warman, Arin K Greene
Arteriovenous malformation (AVM) is a fast-flow, congenital vascular anomaly that may arise anywhere in the body. AVMs typically progress, causing destruction of surrounding tissue and, sometimes, cardiac overload. AVMs are difficult to control; they often re-expand after embolization or resection, and pharmacologic therapy is unavailable. We studied extracranial AVMs in order to identify their biological basis. We performed whole-exome sequencing (WES) and whole-genome sequencing (WGS) on AVM tissue from affected individuals...
January 30, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/28169232/membrane-bound-versus-soluble-major-histocompatibility-complex-class-i-related-chain-a-and-major-histocompatibility-complex-class-i-related-chain-b-differential-expression-mechanisms-of-tumor-eradication-versus-evasion-and-current-drug-development-strategies
#7
REVIEW
P K Suresh
Major histocompatibility complex Class I-related chain A/chain B (MICA/MICB) is stress-inducible, highly polymorphic ligands whose expression at the transcript level has been detected in all tissues except the central nervous system. However, their restricted protein expression is due to their regulation at the posttranslational level. Its levels are elevated in virally infected and neoplastically transformed cells. Membrane expression of this NKG2DL marks the aberrant cells for elimination by those immune effector cells that express the cognate NKG2D receptor...
October 2016: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28153291/highly-sensitive-detection-of-glucose-a-quantitative-approach-employing-nanorods-assembled-plasmonic-substrate
#8
Qiulan Chen, Yu Fu, Weihong Zhang, Suibo Ye, Hao Zhang, Fangyan Xie, Li Gong, Zhanxiao Wei, Haoyu Jin, Jian Chen
Sensitive glucose detection enables indirect blood glucose sensing through easily accessible biofluids such as saliva and sweat. In this work, silver coated gold nanorods (Au@Ag NRs) were synthesized and used to prepare plasmonic substrate for surface-enhanced Raman spectroscopy (SERS) to leverage highly sensitive detection of glucose for quantitative analysis. By synthetically manipulating of gold NRs and the outer silver shell, the size and aspect ratio of Au@Ag NRs were optimized, and the plasmon resonance wavelength was tuned to approximately the excitation wavelength...
April 1, 2017: Talanta
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
#9
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/28122643/identification-of-potential-saliva-and-tear-biomarkers-in-primary-sj%C3%A3-gren-s-syndrome-utilising-the-extraction-of-extracellular-vesicles-and-proteomics-analysis
#10
Lara A Aqrawi, Hilde Kanli Galtung, Beate Vestad, Reidun Øvstebø, Bernd Thiede, Shermin Rusthen, Alix Young, Eduarda M Guerreiro, Tor Paaske Utheim, Xiangjun Chen, Øygunn Aass Utheim, Øyvind Palm, Janicke Liaaen Jensen
BACKGROUND: There is a long-lasting need for non-invasive, more accurate diagnostic techniques when evaluating primary Sjögren's syndrome (pSS) patients. Incorporation of additional diagnostics involving screening for disease-specific biomarkers in biological fluid is a promising concept that requires further investigation. In the current study we aimed to explore novel disease biomarkers in saliva and tears from pSS patients. METHODS: Liquid chromatography-mass spectrometry (LC-MS) was performed on stimulated whole saliva and tears from 27 pSS patients and 32 healthy controls, and salivary and tear proteomic biomarker profiles were generated...
January 25, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28119068/differential-effects-of-eating-and-drinking-on-wellbeing-an-ecological-ambulatory-assessment-study
#11
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/28117682/salivary-diagnostics-point-of-care-diagnostics-of-mmp-8-in-dentistry-and-medicine
#12
REVIEW
Nilminie Rathnayake, Dirk-Rolf Gieselmann, Anna Maria Heikkinen, Taina Tervahartiala, Timo Sorsa
Human saliva is an easily accessible biological fluid and contains a variety of disease-related biomarkers, which makes it a potential diagnostic medium. The clinical use of salivary/oral fluid biomarkers to identify oral and systemic conditions requires the development of non-invasive screening and diagnostic technologies, and is among the main goals of oral fluid researchers. The analysis of the disease-specific oral and systemic biomarkers in saliva and oral fluids (i.e., mouth-rinse, gingival crevicular fluid (GCF) and peri-implantitis sulcular fluid (PISF)) is demanding...
January 20, 2017: Diagnostics
https://www.readbyqxmd.com/read/28110241/autopsy-tissues-as-biological-monitors-of-human-exposure-to-environmental-pollutants-a-case-study-concentrations-of-metals-and-pcdd-fs-in-subjects-living-near-a-hazardous-waste-incinerator
#13
José L Domingo, Francisco García, Martí Nadal, Marta Schuhmacher
Human biomonitoring is of tremendous importance to prevent potential adverse effects derived from human exposure to chemicals. Blood and urine are among the biological monitors more frequently used. However, biological matrices such as breast milk, hair, nails, saliva, feces, teeth, and expired air are also often used. In addition, and focused mainly on long-term exposure, adipose tissue and other human tissues like bone, liver, brain or kidney, are also used as biological monitors of certain substances, especially for long-term biomonitoring...
April 2017: Environmental Research
https://www.readbyqxmd.com/read/28109406/salivary-biomarkers-in-the-diagnosis-of-breast-cancer-a-review
#14
REVIEW
Elisa Cançado Porto-Mascarenhas, Daniele Xavier Assad, Hélène Chardin, David Gozal, Graziela De Luca Canto, Ana Carolina Acevedo, Eliete Neves Silva Guerra
Salivary biomarkers could be helpful to characterize breast cancer. Therefore, this review was performed to evaluate the capability of salivary biological markers in the diagnosis and monitoring of breast cancer. Studies were eligible for inclusion if they assessed the potential diagnostic value or other discriminatory properties of biological markers in saliva of patients with breast cancer. The search was performed in six electronic databases (Cochrane, LILACS, PubMed, Science Direct, Scopus, Web of Science)...
February 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28106506/ectodysplasin-a-in-biological-fluids-and-diagnosis-of-ectodermal-dysplasia
#15
J Podzus, C Kowalczyk-Quintas, S Schuepbach-Mallepell, L Willen, G Staehlin, M Vigolo, A Tardivel, D Headon, N Kirby, M L Mikkola, H Schneider, P Schneider
The tumor necrosis factor (TNF) family ligand ectodysplasin A (EDA) is produced as 2 full-length splice variants, EDA1 and EDA2, that bind to EDA receptor (EDAR) and X-linked EDA receptor (XEDAR/EDA2R), respectively. Inactivating mutations in Eda or Edar cause hypohidrotic ectodermal dysplasia (HED), a condition characterized by malformations of the teeth, hair and glands, with milder deficiencies affecting only the teeth. EDA acts early during the development of ectodermal appendages-as early as the embryonic placode stage-and plays a role in adult appendage function...
February 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28104429/using-lysine-adducts-of-human-serum-albumin-to-investigate-the-disposition-of-exogenous-formaldehyde-in-human-blood
#16
MULTICENTER STUDY
Luca G Regazzoni, Hasmik Grigoryan, Zhiying Ji, Xi Chen, Sarah I Daniels, Deyin Huang, Sylvia Sanchez, Naijun Tang, Fenna C M Sillé, Anthony T Iavarone, Evan R Williams, Luoping Zhang, Stephen M Rappaport
Formaldehyde is a human carcinogen that readily binds to nucleophiles, including proteins and DNA. To investigate whether exogenous formaldehyde produces adducts in extracellular fluids, we characterized modifications to human serum albumin (HSA) following incubation of whole blood, plasma, and saliva with formaldehyde at concentrations of 1, 10 and 100μM. The only HSA locus that showed the presence of formaldehyde modifications was Lys199. A N(6)-Lys adduct with added mass of 12Da, representing a putative intramolecular crosslink, was detected in biological fluids that had been incubated with formaldehyde but not in control fluids...
February 15, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28099915/liquid-biopsy-genotyping-in-lung-cancer-ready-for-clinical-utility
#17
Wei-Lun Huang, Yi-Lin Chen, Szu-Chun Yang, Chung-Liang Ho, Fang Wei, David T Wong, Wu-Chou Su, Chien-Chung Lin
Liquid biopsy is a blood test that detects evidence of cancer cells or tumor DNA in the circulation. Despite complicated collection methods and the requirement for technique-dependent platforms, it has generated substantial interest due, in part, to its potential to detect driver oncogenes such as epidermal growth factor receptor (EGFR) mutants in lung cancer. This technology is advancing rapidly and is being incorporated into numerous EGFR tyrosine kinase inhibitor (EGFR-TKI) development programs. It appears ready for integration into clinical care...
January 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28095825/no-regrets-young-adult-patients-in-psychiatry-report-positive-reactions-to-biobank-participation
#18
Janet L Cunningham, Manuel Zanzi, Mimmie Willebrand, Lisa Ekselius, Mia Ramklint
BACKGROUND: Research in vulnerable individuals must insure voluntariness and minimize negative reactions caused by participation. This study aimed to describe consent and completion rate in young psychiatric patients in relation to study components, degree of disability and to compare response to research participation in patients and controls. METHODS: Between 2012 and 2015, 463 patients with psychiatric disorders between the ages of 18-25 from the Dept. of General Psychiatry at Uppsala University Hospital and 105 controls were recruited to donate data and samples to a biobank...
January 17, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28093970/evaluation-of-salivary-vitamin-c-and-catalase-in-hiv-positive-and-healthy-hiv-negative-control-group
#19
Fatemeh Ahmadi Motamayel, Samaneh Vaziri Amjad, Mohammad Taghi Goodarzi, Jalal Poorolajal
BACKGROUND: Saliva is a complex oral biologic fluid from major and minor salivary glands. Saliva has immunological, enzymatic and antioxidant defense mechanisms. Infection with human immunodeficiency virus (HIV) is life threatening disease. OBJECTIVE: The aim of this study was evaluation of salivary vitamin C and catalase level in HIV positive patients in comparison to healthy control group. METHOD: Forty nine HIV infected person and 49 healthy subjects were selected...
January 16, 2017: Infectious Disorders Drug Targets
https://www.readbyqxmd.com/read/28076306/parallel-diurnal-fluctuation-of-testosterone-androstenedione-dehydroepiandrosterone-and-17ohprogesterone-as-assessed-in-serum-and-saliva-validation-of-a-novel-liquid-chromatography-tandem-mass-spectrometry-method-for-salivary-steroid-profiling
#20
Marco Mezzullo, Alessia Fazzini, Alessandra Gambineri, Guido Di Dalmazi, Roberta Mazza, Carla Pelusi, Valentina Vicennati, Renato Pasquali, Uberto Pagotto, Flaminia Fanelli
BACKGROUND: Salivary androgen testing represents a valuable source of biological information. However, the proper measurement of such low levels is challenging for direct immunoassays, lacking adequate accuracy. In the last few years, many conflicting findings reporting low correlation with the serum counterparts have hampered the clinical application of salivary androgen testing. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) makes it possible to overcome previous analytical limits, providing new insights in endocrinology practice...
January 11, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
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