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https://www.readbyqxmd.com/read/28383398/effect-of-probiotics-on-digestibility-and-immunity-in-infants-a-study-protocol-for-a-randomized-controlled-trial
#1
RANDOMIZED CONTROLLED TRIAL
Lingli Xiao, Guodong Ding, Yifang Ding, Chaoming Deng, Xiaolei Ze, Liang Chen, Yao Zhang, Lihua Song, Hongli Yan, Fang Liu, Xiaoming Ben
The gastrointestinal (GI) tract of a fetus in utero is sterile but it becomes colonized with environmental microorganisms shortly after birth. Since the gut microbiota undergoes substantial changes in early life, healthy gut microflora is essential to an infant's gut health and immune system and probably also has an effect on overall health status in later life. Probiotics, defined as viable microbial preparations that have a beneficial effect on the health of the host, represent a rapidly expanding field. Although randomized controlled trials using probiotics in infants have shown promising results in the prevention and treatment of common diseases such as diarrhea and allergy, little is known about whether probiotics could offer benefits to healthy infants...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28369125/relative-abundance-of-total-subgingival-plaque-specific-bacteria-in-salivary-microbiota-reflects-the-overall-periodontal-condition-in-patients-with-periodontitis
#2
Shinya Kageyama, Toru Takeshita, Mikari Asakawa, Yukie Shibata, Kenji Takeuchi, Wataru Yamanaka, Yoshihisa Yamashita
Increasing attention is being focused on evaluating the salivary microbiota as a promising method for monitoring oral health; however, its bacterial composition greatly differs from that of dental plaque microbiota, which is a dominant etiologic factor of oral diseases. This study evaluated the relative abundance of subgingival plaque-specific bacteria in the salivary microbiota and examined a relationship between the abundance and severity of periodontal condition in patients with periodontitis. Four samples (subgingival and supragingival plaques, saliva, and tongue coating) per each subject were collected from 14 patients with a broad range of severity of periodontitis before periodontal therapy...
2017: PloS One
https://www.readbyqxmd.com/read/28358023/relevance-of-secretor-status-genotype-and-microbiota-composition-in-susceptibility-to-rotavirus-and-norovirus-infections-in-humans
#3
Jesús Rodríguez-Díaz, Izaskun García-Mantrana, Susana Vila-Vicent, Roberto Gozalbo-Rovira, Javier Buesa, Vicente Monedero, Maria Carmen Collado
Host genetic factors, such as histo-blood group antigens (HBGAs), are associated with susceptibility to norovirus (NoV) and rotavirus (RV) infections. Recent advances point to the gut microbiome as a key player necessary for a viral pathogen to cause infection. In vitro NoV attachment to host cells and resulting infections have been linked to interactions with certain bacterial types in the gut microbiota. We investigated the relationship between host genotype, gut microbiota, and viral infections. Saliva and fecal samples from 35 adult volunteers were analysed for secretor status genotype, the gut microbiota composition by 16S rRNA gene sequencing, and salivary IgA titers to NoV and RV...
March 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28342734/integration-of-microbiome-and-epigenome-to-decipher-the-pathogenesis-of-autoimmune-diseases
#4
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 23, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/28326153/salivary-microbiota-in-individuals-with-different-levels-of-caries-experience
#5
Daniel Belstrøm, Palle Holmstrup, Nils-Erik Fiehn, Nikolai Kirkby, Alexis Kokaras, Bruce J Paster, Allan Bardow
This study compared salivary bacterial profiles in two groups having a 10-fold difference in levels of caries experience, as it was hypothesized that the composition of the salivary microbiota might associate with the levels of caries experience. Bacterial profiles in stimulated saliva samples from 85 individuals with low levels of caries experience (healthy group) and 79 individuals with high levels of caries experience (caries group) were analyzed by means of the Human Oral Microbiome Identification Next Generation Sequencing (HOMINGS) technique...
2017: Journal of Oral Microbiology
https://www.readbyqxmd.com/read/28319129/changes-in-salivary-microbiota-increase-volatile-sulfur-compounds-production-in-healthy-male-subjects-with-academic-related-chronic-stress
#6
Bruno Dias Nani, Patricia Oliveira de Lima, Fernanda Klein Marcondes, Francisco Carlos Groppo, Gustavo Sattolo Rolim, Antonio Bento Alves de Moraes, Karina Cogo-Müller, Michelle Franz-Montan
OBJECTIVE: To investigate the associations among salivary bacteria, oral emanations of volatile sulfur compounds, and academic-related chronic stress in healthy male subjects. MATERIALS AND METHODS: Seventy-eight healthy male undergraduate dental students were classified as stressed or not by evaluation of burnout, a syndrome attributed to academic-related chronic stress. This evaluation was carried out using the Maslach Burnout Inventory-Student Survey questionnaire...
2017: PloS One
https://www.readbyqxmd.com/read/28318170/-application-of-saliva-in-disease-diagnosis
#7
REVIEW
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/28254014/the-role-of-saliva-in-aroma-release-and-perception
#8
REVIEW
Sarah Ployon, Martine Morzel, Francis Canon
Aroma perception is an important factor driving food acceptance. Volatile organic compounds (VOCs) are released from the food matrix and then reach the receptors located in the nasal cavity, leading to their perception. These steps are closely dependent on the physicochemical properties of the volatile compounds and the food matrix, but also on human physiology. Among the different physiological parameters involved, the literature reports that saliva has various effects on VOCs and therefore appears as a major actor impacting the perception of aroma...
July 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28220901/distinct-signatures-of-dental-plaque-metabolic-byproducts-dictated-by-periodontal-inflammatory-status
#9
Akito Sakanaka, Masae Kuboniwa, Ei Hashino, Takeshi Bamba, Eiichiro Fukusaki, Atsuo Amano
Onset of chronic periodontitis is associated with an aberrant polymicrobial community, termed dysbiosis. Findings regarding its etiology obtained using high-throughput sequencing technique suggested that dysbiosis holds a conserved metabolic signature as an emergent property. The purpose of this study was to identify robust biomarkers for periodontal inflammation severity. Furthermore, we investigated disease-associated metabolic signatures of periodontal microbiota using a salivary metabolomics approach. Whole saliva samples were obtained from adult subjects before and after removal of supragingival plaque (debridement)...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28197769/confounding-effects-of-microbiome-on-the-susceptibility-of-tnfsf15-to-crohn-s-disease-in-the-ryukyu-islands
#10
Shigeki Nakagome, Hiroshi Chinen, Atsushi Iraha, Akira Hokama, Yasuaki Takeyama, Shotaro Sakisaka, Toshiyuki Matsui, Judith R Kidd, Kenneth K Kidd, Heba S Said, Wataru Suda, Hidetoshi Morita, Masahira Hattori, Tsunehiko Hanihara, Ryosuke Kimura, Hajime Ishida, Jiro Fujita, Fukunori Kinjo, Shuhei Mano, Hiroki Oota
Crohn's disease (CD) involves chronic inflammation in the gastrointestinal tract due to dysregulation of the host immune response to the gut microbiome. Even though the host-microbiome interactions are likely contributors to the development of CD, a few studies have detected genetic variants that change bacterial compositions and increase CD risk. We focus on one of the well-replicated susceptible genes, tumor necrosis factor superfamily member 15 (TNFSF15), and apply statistical analyses for personal profiles of genotypes and salivary microbiota collected from CD cases and controls in the Ryukyu Islands, southernmost islands of the Japanese archipelago...
April 2017: Human Genetics
https://www.readbyqxmd.com/read/28117832/salivary-mucins-promote-the-coexistence-of-competing-oral-bacterial-species
#11
Erica Shapiro Frenkel, Katharina Ribbeck
Mucus forms a major ecological niche for microbiota in various locations throughout the human body such as the gastrointestinal tract, respiratory tract and oral cavity. The primary structural components of mucus are mucin glycoproteins, which crosslink to form a complex polymer network that surrounds microbes. Although the mucin matrix could create constraints that impact inhabiting microbes, little is understood about how this key environmental factor affects interspecies interactions. In this study, we develop an experimental model using gel-forming human salivary mucins to understand the influence of mucin on the viability of two competing species of oral bacteria...
May 2017: ISME Journal
https://www.readbyqxmd.com/read/28013437/exploration-of-bacterial-species-associated-with-the-salivary-microbiome-of-individuals-with-a-low-susceptibility-to-dental-caries
#12
Haruna Yasunaga, Toru Takeshita, Yukie Shibata, Michiko Furuta, Yoshihiro Shimazaki, Sumio Akifusa, Toshiharu Ninomiya, Yutaka Kiyohara, Ichiro Takahashi, Yoshihisa Yamashita
OBJECTIVE: Dental caries is caused by acidogenic plaque microbiota formed on saliva-bathed tooth surfaces, in which multiple organisms act collectively to initiate and expand a cavity. We explored bacterial species associated with the salivary microbiome of individuals with low susceptibility to dental caries. MATERIALS AND METHODS: The bacterial composition of saliva from 19 young adults was analyzed using barcoded pyrosequencing of the 16S rRNA gene; we compared 10 caries-experienced (CE) and nine caries-free (CF) individuals...
December 24, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27943101/salivary-biomarkers-in-cancer-detection
#13
REVIEW
Xiaoqian Wang, Karolina Elżbieta Kaczor-Urbanowicz, David T W Wong
Cancer is the second most common cause of death in the USA. Its symptoms are often not specific and absent, until the tumors have already metastasized. Therefore, there is an urgent demand for developing rapid, highly accurate and noninvasive tools for cancer screening, early detection, diagnostics, staging and prognostics. Saliva as a multi-constituent oral fluid comprises secretions from the major and minor salivary glands, extensively supplied by blood. Molecules such as DNAs, RNAs, proteins, metabolites, and microbiota, present in blood, could be also found in saliva...
January 2017: Medical Oncology
https://www.readbyqxmd.com/read/27932242/elevated-salivary-iga-decreased-anxiety-and-an-altered-oral-microbiota-are-associated-with-active-participation-on-an-undergraduate-athletic-team
#14
Ashley L Lamb, Debra E Hess, Sherie Edenborn, Elizabeth Ubinger, Andres E Carrillo, Pierette M Appasamy
BACKGROUND: Previous reports indicate that regular, but not excessive, exercise can moderate the response to anxiety and alter the immune response, therefore we hypothesized that college student athletes who were actively participating on an NCAA Division III athletics team ("in-season") would have lower levels of anxiety and higher salivary IgA levels than similar college athletes who were in their "off-season". NCAA Division III athletes participate in athletics at a level of intensity that is more moderate compared to other NCAA divisions...
February 1, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/27833819/salivary-microbiomes-of-indigenous-tsimane-mothers-and-infants-are-distinct-despite-frequent-premastication
#15
Cliff S Han, Melanie Ann Martin, Armand E K Dichosa, Ashlynn R Daughton, Seth Frietze, Hillard Kaplan, Michael D Gurven, Joe Alcock
BACKGROUND: Premastication, the transfer of pre-chewed food, is a common infant and young child feeding practice among the Tsimane, forager-horticulturalists living in the Bolivian Amazon. Research conducted primarily with Western populations has shown that infants harbor distinct oral microbiota from their mothers. Premastication, which is less common in these populations, may influence the colonization and maturation of infant oral microbiota, including via transmission of oral pathogens...
2016: PeerJ
https://www.readbyqxmd.com/read/27822543/the-oral-and-skin-microbiomes-of-captive-komodo-dragons-are-significantly-shared-with-their-habitat
#16
Embriette R Hyde, Jose A Navas-Molina, Se Jin Song, Jordan G Kueneman, Gail Ackermann, Cesar Cardona, Gregory Humphrey, Don Boyer, Tom Weaver, Joseph R Mendelson, Valerie J McKenzie, Jack A Gilbert, Rob Knight
Examining the way in which animals, including those in captivity, interact with their environment is extremely important for studying ecological processes and developing sophisticated animal husbandry. Here we use the Komodo dragon (Varanus komodoensis) to quantify the degree of sharing of salivary, skin, and fecal microbiota with their environment in captivity. Both species richness and microbial community composition of most surfaces in the Komodo dragon's environment are similar to the Komodo dragon's salivary and skin microbiota but less similar to the stool-associated microbiota...
July 2016: MSystems
https://www.readbyqxmd.com/read/27793169/oral-microbiota-carriage-in-patients-with-multibracket-appliance-in-relation-to-the-quality-of-oral-hygiene
#17
Katharina Klaus, Johanna Eichenauer, Rhea Sprenger, Sabine Ruf
BACKGROUND: The present study aimed to investigate the prevalence of oral microbiota (Candida species (spp.), Streptococcus mutans, and Lactobacilli) in patients with multibracket (MB) appliances in relation to the quality of oral hygiene. Saliva and plaque samples were collected from three groups of 25 patients each (good oral hygiene (GOH), poor oral hygiene (POH), and poor oral hygiene with white spot lesions (POH/WSL)). Counts of colony forming units (CFU) of the investigated oral microbiota were compared using Chi-square and Mann-Whitney U tests...
October 28, 2016: Head & Face Medicine
https://www.readbyqxmd.com/read/27770517/microbiological-and-bioinformatics-analysis-of-primary-sjogren-s-syndrome-patients-with-normal-salivation
#18
Huma Siddiqui, Tsute Chen, Ardita Aliko, Piotr M Mydel, Roland Jonsson, Ingar Olsen
BACKGROUND: Reduced salivation is considered a major clinical feature of most but not all cases of primary Sjögren's syndrome (pSS). Reduced saliva flow may lead to changes in the salivary microbiota. These changes have mainly been studied with culture that typically recovers only 65% of the bacteria present. OBJECTIVE: This study was to use high throughput sequencing, covering both cultivated and not-yet-cultivated bacteria, to assess the bacterial microbiota of whole saliva in pSS patients with normal salivation...
2016: Journal of Oral Microbiology
https://www.readbyqxmd.com/read/27759406/salivary-microbiota-and-caries-occurrence-in-mutans-streptococci-positive-school-children
#19
COMPARATIVE STUDY
M ElSalhy, E Söderling, E Honkala, M Fontana, S Flannagan, A Kokaras, B J Paster, A Varghese, S Honkala
AIM: To compare the composition of the salivary microbiota in caries-affected vs. caries-free mutans streptococci (MS)- positive children with mixed dentition. MATERIALS AND METHODS: Twenty eight healthy, 11-12-year-old schoolchildren with high MS counts (>10⊃5 CFU/mL) were included in this study. The children were screened with the Dentocult SM Strip Mutans test (Orion Diagnostica, Espoo, Finland) and examined using the International Caries Detection and Assessment System (ICDAS)...
September 2016: European Journal of Paediatric Dentistry: Official Journal of European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/27684425/oral-colostrum-priming-shortens-hospitalization-without-changing-the-immunomicrobial-milieu
#20
J Romano-Keeler, M A Azcarate-Peril, J-H Weitkamp, J C Slaughter, W H McDonald, S Meng, M S Latuga, J L Wynn
OBJECTIVE: Oral colostrum priming (OCP) after birth in preterm infants is associated with improved weight gain and modification of the oral immunomicrobial environment. We hypothesized that OCP would modify salivary immune peptides and the oral microbiota in preterm infants. STUDY DESIGN: We conducted a prospective, randomized clinical trial to determine the effects of OCP on salivary immune peptide representation in preterm infants (<32 weeks completed gestation at birth)...
January 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
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