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Peisheng Liang, Wangyong Zhu, Tianjun Lan, Qian Tao
Saliva secretion disorder is one of the most common symptoms in primary Sjögren syndrome (pSS). Salivary biomarkers related to saliva secretion disorder were identified in a pSS murine model, NOD/ShiLtJ mouse, using differential proteomic analysis. Candidate biomarkers were screened with Kyoto Encyclopedia of Genes and Genomes pathway analysis and validated in saliva and salivary glands by western blotting and immunohistochemistry (IHC). Biological functions were detected using ingenuity pathway analysis (IPA)...
March 12, 2018: Journal of Pharmaceutical and Biomedical Analysis
Katarzyna J Błochowiak, Dorota Trzybulska, Anna Olewicz-Gawlik, Jan J Sikora, Michalina Nowak-Gabryel, Jarosław Kocięcki, Henryk Witmanowski, Jerzy Sokalski
BACKGROUND: Aberrant angiogenesis plays a role in the pathogenesis of Sjögren's syndrome (SS). OBJECTIVES: The aim of this study was to compare the levels of vascular endothelial growth factor (VEGF) and epidermal growth factor (EGF) in stimulatory parotid saliva and in serum in healthy subjects (HS), patients with primary SS (pSS) and secondary SS (sSS) and to evaluate the expression of EGF, proangiogenic VEGF165 and antiangiogenic VEGF165 b mRNA isoforms. Additionally, we determined the salivary levels of serine/arginine splicing factor (SRSF1), which regulates VEGF165 and VEGF165 b expression...
March 20, 2018: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
M Di Giulio, V Di Valerio, D Bosco, E Marsich, A Cataldi, L Cellini, S Sancilio
The molecular mechanisms leading to Streptococcus mitis capability of entering oral cells were investigated in a co-culture of S. mitis and Human Gingival Fibroblasts (HGFs) in the presence of saliva. An innovative colloidal solution based on silver nanoparticles (Chitlac-nAg), a promising device for daily oral care, was added to the experimental system in order to study the effects of silver on the bacterial overgrowth and ability to enter non-phagocytic eukaryotic cells. The entry of bacteria into the eukaryotic cells is mediated by a signalling pathway involving FAK, integrin β1, and the two cytoskeleton proteins vinculin and F-actin, and down-regulated by the presence of saliva both at 3 and 48 h of culture, whereas Chitlac-n Ag exposure seems to influence, by incrementing it, the number of bacteria entering the fibroblasts only at 48 h...
March 19, 2018: Journal of Materials Science. Materials in Medicine
Xiu-Xiu Zhang, Yi-Zhen Song, Fang Fang, Zhi-Yong Wu
On-site rapid monitoring of nitrite as an assessment indicator of the environment, food, and physiological systems has drawn extensive attention. Here, electrokinetic stacking (ES) was combined with colorimetric reaction on a paper-based device (PAD) to achieve colorless nitrite detection with smartphone. In this paper, nitrite was stacked on the paper fluidic channel as a narrow band by electrokinetic stacking. Then, Griess reagent was introduced to visualize the stacking band. Under optimal conditions, the sensitivity of nitrite was 160-fold increased within 5 min...
March 19, 2018: Analytical and Bioanalytical Chemistry
S J M Kamphuis, A R Jandali, F J Jung, J Sproedt
A drug-addicted patient injected himself intra-arterially with a mixture of methadone, flunitrazepam, saliva and water. The resulting compartment syndrome could be treated by fasciotomy and multiple debridement, with which a major amputation could be prevented. The course of the treatment and the resulting functional results are described, as well as a brief overview of the literature and a treatment proposal for similar cases.
March 19, 2018: Der Unfallchirurg
Óscar Rapado-González, Blanca Majem, Laura Muinelo-Romay, Ana Álvarez-Castro, Anna Santamaría, Antonio Gil-Moreno, Rafael López-López, María Mercedes Suárez-Cunqueiro
Circulating microRNAs (miRNAs) have emerged as excellent candidates for cancer biomarkers. Several recent studies have highlighted the potential use of saliva for the identification of miRNAs as novel biomarkers, which represents a great opportunity to improve diagnosis and monitor general health and disease. This review summarises the mechanisms of miRNAs deregulation in cancer, the value of targeting them with a therapeutic intention and the evidence of the potential clinical use of miRNAs expressed in saliva for the detection of different cancer types...
2018: Journal of Cancer
Teresa C Assumpção, Daniella M Mizurini, Dongying Ma, Robson Q Monteiro, Sydney Ahlstedt, Morayma Reyes, Michail Kotsyfakis, Thomas N Mather, John F Andersen, Jan Lukszo, José M C Ribeiro, Ivo M B Francischetti
Tick saliva is a rich source of modulators of vascular biology. We have characterized Ixonnexin, a member of the "Basic-tail" family of salivary proteins from the tick Ixodes scapularis. Ixonnexin is a 104 residues (11.8 KDa), non-enzymatic basic protein which contains 3 disulfide bonds and a C-terminal rich in lysine. It is homologous to SALP14, a tick salivary FXa anticoagulant. Ixonnexin was produced by ligation of synthesized fragments (51-104) and (1-50) followed by folding. Ixonnexin, like SALP14, interacts with FXa...
March 19, 2018: Scientific Reports
Tairon Pannunzio Dias E Silva, Carolina Rodriguez Jimenez, Egon Ion Ieda, Adibe Luiz Abdalla, Helder Louvandini
This study was conducted to evaluate the metabolism and phosphorus (P) kinetics in lambs experimentally infected with Trichostrongylus colubriformis using the isotope dilution technique and modelling. Fifteen male lambs (21.1 ± 1.50 kg) of the Santa Inês hair breed of approximately six months old, distributed in the treatments infected (I, n = 8) and control (C, n = 7) were used. The infected lambs received serial infections with 5000 T. colubriformis larvae, three times per week, for 3 weeks (45 000 T...
March 16, 2018: Experimental Parasitology
Alvaro Sanabria, Daniel Sánchez, Andrés Chala, Andres Alvarez
The effect on quality of life (QOL) of laryngectomy and organ preservation protocols is important in decision making. The aim of this cross-sectional study was to evaluate QOL outcomes of patients with advanced laryngeal tumors who were treated with laryngectomy or organ preservation protocols in Latin America. A total of 35 patients from three oncology units were enrolled. Patients with stage III/IV laryngeal cancer who were treated using organ preservation protocols or laryngectomy were assessed with the University of Washington QOL Questionnaire...
March 2018: Ear, Nose, & Throat Journal
Laura Puhakka, Maija Lappalainen, Tuula Lönnqvist, Riina Niemensivu, Päivi Lindahl, Tea Nieminen, Raija Seuri, Irmeli Nupponen, Sunil Pati, Suresh Boppana, Harri Saxen
Background: Congenital cytomegalovirus (cCMV) infection is the most common congenital infection and causes significant morbidity. This study was undertaken to evaluate the benefits of screening newborns for cCMV and to understand the cCMV disease burden in Finland. Methods: Infants born in Helsinki area hospitals were screened for CMV by testing their saliva with a real-time polymerase chain reaction assay. The CMV-positive infants and matched controls were monitored to determine their neurodevelopmental, audiological, and ophthalmological outcomes at 18 months of age...
March 15, 2018: Journal of the Pediatric Infectious Diseases Society
Domenico Ciavarella, Michele Tepedino, Michele Laurenziello, Laura Guida, Giuseppe Troiano, Graziano Montaruli, Gaetano Illuzzi, Claudio Chimenti, Lorenzo Lo Muzio
INTRODUCTION: Temporomandibular disease (TMD) etiology is multifactorial and is related to many perpetuating, predisposing, and initiating factors. The daytime parafunctions may have an important role in TMD pathogenesis. The most frequent parafunctions analyzed were the static parafunction (ie, clenching) and the dynamic parafunction (ie, grinding). In the present paper, the authors evaluated the swallowing (an oral function/parafunction) with the surface electromyography in patients with TMD...
March 16, 2018: Journal of Craniofacial Surgery
Chiaki Yabuki, Akitomo Rikuta, Ryosuke Murayama, Syunsuke Akiba, Soshi Suzuki, Toshiki Takamizawa, Hiroyasu Kurokawa, Masashi Miyazaki
The purpose of this study was to investigate the effect of acid erosion on the bonding performance of universal adhesives. Freshly extracted bovine teeth were cut into enamel slabs and assigned to either the Er or the control group. Specimens in the Er group were immersed in citric acid solution (pH 2.1) twice a day and stored in artificial saliva, while control specimens were simply stored in artificial saliva. Differences in the mean values between the control and Er groups were greater than expected, despite accounting for the effect of differences in the adhesive systems (p=0...
March 17, 2018: Dental Materials Journal
Andrine M Lemieux, Motohiro Nakajima, Riyadh Saif-Ali, Molham Al-Habori, Anisa Dokam, Mustafa al'Absi
INTRODUCTION: Glucocorticoid activity is disrupted in substance users including khat chewers who also use tobacco. Anger, dysphoria, and anxiety can mediate this relationship. The aim of this study was to contrast emotion dysregulation and substance use variables as predictors of post-stress cortisol output. MATERIALS AND METHODS: Comparable numbers of males (n = 90) and females (n = 85) including controls, khat only, and concurrent khat and tobacco users participated in a stress study...
March 2, 2018: Addictive Behaviors
J J Pytko-Polonczyk, A Jakubik, A Przeklasa-Bierowiec, B Muszynska
Examination of dental materials and their properties at the initial stage of the digestive process requires the development of conditions that mimic the environment of the oral cavity. One of the main components of this area is saliva, where many reactions occur under natural conditions. Human saliva is an important physiological fluid that is essential for the maintenance of good oral health and of the entire human body; it is the place where digestion begins and thus contributes to the supply of those nutrients and health-promoting substances that are essential to the body but may also cause release of potential toxins...
December 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
Kim L Felmingham, Daniel V Zuj, Ken Chia Ming Hsu, Emma Nicholson, Matthew A Palmer, Kimberley Stuart, James C Vickers, Gin S Malhi, Richard A Bryant
The low expression Met allele of the BDNF Val66Met polymorphism is associated with impaired fear extinction in healthy controls, and poorer response to exposure therapy in patients with Posttraumatic Stress Disorder (PTSD). Given that fear extinction underlies exposure therapy, this raises the question of the impact of BDNFVal66Met polymorphism on fear extinction in PTSD, yet this question has not yet been examined. One hundred and six participants (22 PTSD, 46 trauma-exposed controls (TC) and 38 non-trauma exposed controls (NTC)) completed a fear conditioning and extinction task and saliva samples were taken for DNA extraction and genotyped for the BDNF Val66Met polymorphism...
March 6, 2018: Psychoneuroendocrinology
E Hanson, S Ingold, C Haas, J Ballantyne
The recovery of a DNA profile from the perpetrator or victim in criminal investigations can provide valuable 'source level' information for investigators. However, a DNA profile does not reveal the circumstances by which biological material was transferred. Some contextual information can be obtained by a determination of the tissue or fluid source of origin of the biological material as it is potentially indicative of some behavioral activity on behalf of the individual that resulted in its transfer from the body...
March 6, 2018: Forensic Science International. Genetics
Varankpicha Kochagul, Saralee Srivorakul, Kittikorn Boonsri, Chalermchart Somgird, Nattawooti Sthitmatee, Chatchote Thitaram, Kidsadagon Pringproa
Elephant endotheliotropic herpesvirus (EEHV) is one of the most devastating viral infectious diseases in elephants worldwide. To date, it remains unclear how elephants get infected by the virus, where the virus persists, and what mechanisms drive the pathogenesis of the disease. The present study was aimed to develop an antibody against glycoprotein B (gB) of EEHV, investigate the EEHV tissue tropisms, and provide the possible routes of EEHV transmission in Asian elephants. Samples from elephant organs that had died from EEHV1A and EEHV4 infections, peripheral blood mononuclear cells (PBMC) from EEHV4- and non-EEHV-infected calves were used in this study...
March 16, 2018: Scientific Reports
Theresa Stolle, Freya Grondinger, Andreas Dunkel, Thomas Hofmann
Recently, studies on human salt taste sensitivity demonstrated that sodium chloride (NaCl) sensitive and non-sensitive subjects differed in their salivary proteome and, in particular, in endopeptidase activity. In order to investigate individual's NaCl sensitivity and the role of endoprotease activity in salt taste perception, 20 panellists were classified according to NaCl sensitivity and saliva samples collected. A targeted protein quantitation by means of selected-reaction-monitoring (SRM) mass spectrometry and stable-isotope incorporation revealed the joint abundance of lysozyme C and lipocalin-1 to be indicative for non-sensitive subjects...
July 15, 2018: Food Chemistry
Liyun Zhang, Devin G Peterson
Differences in the taste profile of corn puffed products formulated with refined versus whole grain mix flour were characterized. The perceived bitter intensity was reported to be the main taste difference between the samples. Based on multidimensional sensory-guided fractionation techniques and subsequent identification by MS and NMR analysis, the primary bitter compounds identified in the whole grain sample were l-tryptophan, chaenorpine, N1 ,N5 -Di-[E]-p-coumaroyl-spermidine, and terrestribisamide. All compounds were reported to contribute to bitterness perception at the concentrations reported in the saliva after mastication of the extruded products; chaenorphine had the highest contribution to the perceived bitterness...
July 15, 2018: Food Chemistry
Waleed K Mohammed, Natalio Krasnogor, Nicholas S Jakubovics
The ability of microorganisms to regulate gene expression is thought to be critical for survival and growth during the development of polymicrobial biofilms such as dental plaque. The commensal dental plaque colonizer, Streptococcus gordonii, responds to cell-cell contact (coaggregation) with Actinomyces oris by regulating > 20 genes, including those involved in arginine biosynthesis. We hypothesized that an S. gordonii extracellular protease is critical for sensing by providing amino acids that modulate gene expression...
March 14, 2018: FEMS Microbiology Ecology
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