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Oral pathology

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https://www.readbyqxmd.com/read/27926431/the-oral-microbiome-in-health-and-its-implication-in-oral-and-systemic-diseases
#1
B Sampaio-Maia, I M Caldas, M L Pereira, D Pérez-Mongiovi, R Araujo
The oral microbiome can alter the balance between health and disease, locally and systemically. Within the oral cavity, bacteria, archaea, fungi, protozoa, and viruses may all be found, each having a particular role, but strongly interacting with each other and with the host, in sickness or in health. A description on how colonization occurs and how the oral microbiome dynamically evolves throughout the host's life is given. In this chapter the authors also address oral and nonoral conditions in which oral microorganisms may play a role in the etiology and progression, presenting the up-to-date knowledge on oral dysbiosis as well as the known underlying pathophysiologic mechanisms involving oral microorganisms in each condition...
2016: Advances in Applied Microbiology
https://www.readbyqxmd.com/read/27925225/preclinical-study-of-anticoagulation-regimens-in-sheep-after-implantation-of-ch-vad-blood-pump
#2
Chuangye Xu, Guanghui Wu, Xiujian Liu, Yuna He, Xiaotong Hou, Haiyang Li, Chen Chen, Peng Yang, Changyan Lin
Effective anticoagulation regimens are needed to reduce risks of thrombosis and bleeding in animal models of ventricular assist device to verify its hemocompatibility, biologic safety and reliability. This study is to develop a validated anticoagulation procedure for a sheep model to test the newly developed CH-VAD. CH-VAD models were established in six healthy sheep by constructing blood bypass of left ventricle → ventricular assist device → descending aorta. Heparin infusion was used during operation and in the prior 4 days to maintain activated clotting time 1...
December 7, 2016: Artificial Organs
https://www.readbyqxmd.com/read/27920981/infective-endocarditis-and-sj%C3%A3-gren-s-syndrome-diagnosed-simultaneously
#3
Fujiko Morita, Yuji Hirai, Kiyozumi Suzuki, Yuki Uehara, Kazunori Mitsuhashi, Atsushi Amano, Toshio Naito
Poor dentition and/or dental infection due to insufficient oral care are presumed to be risk factors for infective endocarditis (IE). We present a case of endocarditis caused by Granulicatella adiacens and Sjögren's syndrome (SS) with oral complications diagnosed simultaneously. A 67-year-old woman was admitted to our hospital with fever, general fatigue, arthralgia, and back pain. She was diagnosed with primary SS according to the criteria of the American-European Consensus Group. Transthoracic echocardiography carried out to examine her persistent fever revealed vegetation formation (14 × 5 mm) on the aortic valve and her blood cultures were positive for G...
2017: IDCases
https://www.readbyqxmd.com/read/27919469/dangerous-intoxication-after-oral-ingestion-of-poppers-alkyl-nitrites-two-case-reports
#4
Stéphanie Pain, François Chavant, Bernard Fauconneau, Jérémy Guenezan, Nicolas Marjanovic, Jean-Yves Lardeur, Bertrand Brunet, Marie-Christine Perault-Pochat
"Poppers" (alkyl nitrites) were made famous in the 1960s as a party drug and are still used today. They are highly volatile, sweet-smelling liquids commonly administered by inhalation. However, sometimes, they can be consumed by oral ingestion resulting in greater toxicity. They are used for their vasodilator effects but these volatile nitrites can also cause methemoglobinemia. Methemoglobinemia is a rare pathology that results from the oxidation of iron in the hemoglobin molecule. Oxidation of iron switches it from the ferrous to the ferric state and impedes the ability of hemoglobin to carry oxygen...
December 2, 2016: Thérapie
https://www.readbyqxmd.com/read/27919254/anti-inflammatory-and-in-vitro-antibacterial-activities-of-traditional-chinese-medicine-formula-qingdaisan
#5
Xinghua Zhao, Xin He, Xiuhui Zhong
BACKGROUND: Qingdaisan (Formulated Indigo powder, QDS) are widely used for treatment of aphtha, sore throat and bleeding gums in China. The aim of the study is to evaluate the anti-inflammatory, antibacterial and dental ulcer therapeutic effects of QDS. METHODS: Dimethylbenzene-induced ear edema test and cotton pellet-induced granuloma test were used to evaluate anti-inflammatory activities of QDS on acute and chronic inflammatory. The healing time and local pathologic changes were used to assess the therapeutic effects of QDS on dental ulcer...
December 5, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27919212/investigating-drug-repositioning-approach-to-design-novel-prodrugs-for-colon-specific-release-of-fexofenadine-for-ulcerative-colitis
#6
Suneela S Dhaneshwar, Priyanka Singh
BACKGROUND: Recent immunologic data implicates involvement of mucosal immune cells of the intestine like eosinophils and mast cells to be functionally involved in the pathogenesis of UC. Mast cell activation is followed by increased secretion and elevated tissue concentration of histamine. Inhibition of mucosal histamine release in colon may be an effective therapeutic approach to treat UC. Some studies report that intestinal inflammation associated with acute and chronic colitis has been ameliorated by fexofenadine in mice...
December 5, 2016: Current Drug Delivery
https://www.readbyqxmd.com/read/27918739/extra-tongue-oral-granular-cell-tumor-histological-and-immunohistochemical-aspect
#7
P-L Tobouti, F-M Pigatti, M-C Martins-Mussi, B-T Sedassari, S-C Orsini-Machado de Sousa
BACKGROUND: Granular cell tumor (GCT) is an uncommon benign tumor founded in any part of the body but mainly in the tongue. Extra-tongue oral granular cell tumor (ETOGCT) is rare with few cases reported. Here we describe seven cases of oral GCT located in sites other then the tongue and discuss histopathological and immunohistochemical differences between differential diagnoses Material and Methods: We retrieved all cases diagnosed with oral granular cell tumor, from the Oral Pathology Service at the School of Dentistry/ University of São Paulo, and excluded the ones sited in the tongue...
December 6, 2016: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/27916511/liqustri-lucidi-fructus-inhibits-hepatic-injury-and-functions-as-an-antioxidant-by-activation-of-amp-activated-protein-kinase-in-vivo-and-in-vitro
#8
Hye Lim Seo, Su Youn Baek, Eun Hye Lee, Ju-Hee Lee, Seul-Gi Lee, Kwang-Youn Kim, Mi Hee Jang, Min-Hui Park, Joung-Hee Kim, Keun-Jun Kim, Hyeong Sik Lee, Soon-Cheol Ahn, Jong Rok Lee, Sook Jahr Park, Sang Chan Kim, Young Woo Kim
Medicinal herbs are used to treat or prevent various diseases, and function to regulate protective mechanisms as nutraceuticals. Fructus Ligustri lucidi is the fruit of Ligustrum lucidum and has been used for its tonic effects on the liver. This study was designed to examine the effects of Fructus Ligustri lucidi water extract (FLL) against severe oxidative stress and mitochondrial impairment in vivo and in vitro and to elucidate its cellular mechanisms of action. Treatment of HepG2 cells with arachidonic acid (AA) + iron successfully induced oxidative stress and apoptosis, as indicated by depletion of glutathione, formation of ROS, increases in mitochondrial membrane permeability (MMP), and altered expression of apoptosis-related proteins, such as procaspase-3 and Bcl-xL...
December 1, 2016: Chemico-biological Interactions
https://www.readbyqxmd.com/read/27916471/the-efficacy-of-faropenem-for-patients-with-acute-cystitis-caused-by%C3%A2-extended-spectrum-%C3%AE-lactamase-producing-escherichia-coli
#9
Keiko Fujino, Yoshiki Hiyama, Teruhisa Uehara, Koji Ichihara, Jiro Hashimoto, Satoshi Fujii, Masaaki Shinagawa, Satoshi Takahashi, Naoya Masumori
The number of patients with acute cystitis caused by extended spectrum β lactamase (ESBL)-producing Escherichia coli (E. coli) is increasing gradually. Although it is reported that ESBL-producing E. coli are sensitive to faropenem (FRPM), there are few clinical studies on the efficiency of FRPM against acute cystitis caused by the bacteria. Therefore, we retrospectively reviewed the medical charts of patients with acute cystitis caused by ESBL-producing E. coli who were treated with the oral antimicrobial agent faropenem (FRPM) in our institution from June 2011 to May 2015...
December 2, 2016: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/27916172/neck-dissection-versus-watchful-waiting-in-early-squamous-cell-carcinoma-of-the-tongue-our-experience-on-127-cases
#10
Giovanni Dell'Aversana Orabona, Paola Bonavolontà, Fabio Maglitto, Marco Friscia, Giorgio Iaconetta, Luigi Califano
BACKGROUND: Early oral squamous cell carcinoma (EOSCC) represents about 90% of the oral cancers especially in older males. The etiology is multifactorial, strongly related to tobacco and alcohol abuse, but also infective agents, Human papillomaviruses (HPV16-18), genetic factors and pre-neoplastic lesions seem to be implicated. There is no consensus in the literature for the treatment of early squamous cell carcinoma of the tongue (stages I-II); both an elective neck dissection policy and a watchful-waiting policy have their proponents in the different centers...
December 2016: Surgical Oncology
https://www.readbyqxmd.com/read/27912057/gut-microbiota-regulate-motor-deficits-and-neuroinflammation-in-a-model-of-parkinson-s-disease
#11
Timothy R Sampson, Justine W Debelius, Taren Thron, Stefan Janssen, Gauri G Shastri, Zehra Esra Ilhan, Collin Challis, Catherine E Schretter, Sandra Rocha, Viviana Gradinaru, Marie-Francoise Chesselet, Ali Keshavarzian, Kathleen M Shannon, Rosa Krajmalnik-Brown, Pernilla Wittung-Stafshede, Rob Knight, Sarkis K Mazmanian
The intestinal microbiota influence neurodevelopment, modulate behavior, and contribute to neurological disorders. However, a functional link between gut bacteria and neurodegenerative diseases remains unexplored. Synucleinopathies are characterized by aggregation of the protein α-synuclein (αSyn), often resulting in motor dysfunction as exemplified by Parkinson's disease (PD). Using mice that overexpress αSyn, we report herein that gut microbiota are required for motor deficits, microglia activation, and αSyn pathology...
December 1, 2016: Cell
https://www.readbyqxmd.com/read/27910776/molecular-pathology-of-malignant-transformation-of-oral-submucous-fibrosis
#12
Amit Chattopadhyay, Jay Gopal Ray
Oral submucous fibrosis (OSF) is prevalent mostly in Southeast Asia, particularly in the Indian subcontinent. Chewing betel nuts and betel leaves, with or without tobacco, has been associated with OSF. Betel quid contents including guvacine, arecoline, guvacoline, arecaidine, and chavibetol are considered to play an important part in the occurrence of OSF. Transformation of OSF to squamous cell carcinoma (SCC) is variable, but up to 13% conversion of OSF to SCC has been reported. Various genetic and molecular mechanisms impact the malignant transformation of OSF, causing changes in the cell cycle, DNA, keratinocytes, and keratin; tumor-cell proliferation and survival; angiogenesis; fibrosis through epithelial-mesenchymal transitions (EMTs), and tissue hypoxia...
2016: Journal of Environmental Pathology, Toxicology and Oncology
https://www.readbyqxmd.com/read/27908708/chlorogenic-acid-ameliorates-isoproterenol-induced-myocardial-injury-in-rats-by-stabilizing-mitochondrial-and-lysosomal-enzymes
#13
Palaniyandi Akila, Lourthurani Asaikumar, Lakshmanan Vennila
This study was deliberated to aspire the effects of chlorogenic acid (CGA) against myocardial infarction (MI) induced by Isoproterenol (ISO), in a rat model. In the pathology of MI, enzymes released due to the mitochondrial and lysosomal lipid peroxidation play an integral role. Induction of rats with ISO (85mg/kg BW) for 2 consecutive days resulted in a significant decrease in the activities of heart mitochondrial enzymes isocitrate dehydrogenase (ICDH), α-ketoglutarate dehydrogenase (α-KGDH), succinate dehydrogenase (SDH) and malate dehydrogenase (MDH)...
November 28, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27906094/decreasing-loco-regional-recurrence-for-oral-cavity-cancer-with-total-mohs-margins-technique
#14
Mathieu Bergeron, Pierre Gauthier, Nathalie Audet
BACKGROUND: The conventional technique for cancer resection margin analysis studies only 0.1% of the surgical margins. Complete frozen section margins - also known as Mohs margins - allows for analysis of 100% of the surgical margins. METHODS: The objective of our study is to compare oral cavity cancer loco-regional recurrence rates when treated by total frozen sections technique (Total Mohs margins) versus conventional margins. We conducted a multicenter retrospective cohort chart review...
December 1, 2016: Journal of Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/27903864/oral-thrombin-inhibitor-aggravates-platelet-adhesion-and-aggregation-during-arterial-thrombosis
#15
Tobias Petzold, Manuela Thienel, Ildiko Konrad, Irene Schubert, Ron Regenauer, Boj Hoppe, Michael Lorenz, Annekathrin Eckart, Sue Chandraratne, Carsten Lennerz, Christof Kolb, Daniel Braun, Janina Jamasbi, Richard Brandl, Siegmund Braun, Wolfgang Siess, Christian Schulz, Steffen Massberg
In patients with atrial fibrillation, oral anticoagulation with oral thrombin inhibitors (OTIs), in contrast to vitamin K antagonists (VKAs), associates with a modest increase in acute coronary syndromes (ACSs). Whether this observation is causatively linked to OTI treatment and, if so, whether OTI action is the result of a lower antithrombotic efficacy of OTI compared to VKA or reflects a yet undefined prothrombotic activity of OTI remain unclear. We analyzed platelet function in patients receiving OTI or dose-adapted VKA under static and flow conditions...
November 30, 2016: Science Translational Medicine
https://www.readbyqxmd.com/read/27903834/saliva-diagnostics-current-views-and-directions
#16
Karolina Elżbieta Kaczor-Urbanowicz, Carmen Martin Carreras-Presas, Katri Aro, Michael Tu, Franklin Garcia-Godoy, David Tw Wong
In this review, we provide an update on the current and future applications of saliva for diagnostic purposes. There are many advantages of using saliva as a biofluid. Its collection is fast, easy, inexpensive, and non-invasive. In addition, saliva, as a "mirror of the body," can reflect the physiological and pathological state of the body. Therefore, it serves as a diagnostic and monitoring tool in many fields of science such as medicine, dentistry, and pharmacotherapy. Introduced in 2008, the term "Salivaomics" aimed to highlight the rapid development of knowledge about various "omics" constituents of saliva, including: proteome, transcriptome, micro-RNA, metabolome, and microbiome...
November 29, 2016: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/27900245/image-analysis-assisted-study-of-mitotic-figures-in-oral-epithelial-dysplasia-and-squamous-cell-carcinoma-using-differential-stains
#17
Ankita Tandon, Narendra Nath Singh, V R Brave, Gadiputi Sreedhar
BACKGROUND: Mitosis is a process of cell division resulting in two genetically equivalent daughter cells. Excessive proliferation of cells due to mitosis is the hallmark in pre cancer and cancer. AIMS: This study was conducted to count the number of mitotic figures in normal oral mucosa, oral epithelial dysplasia and squamous cell carcinoma in both Hematoxylin and Eosin (H&E) and Crystal Violet stained sections. Also the overall number of mitotic figures with both stains were compared along with the evaluation of staining efficacy of both the stains...
November 2016: Journal of Oral Biology and Craniofacial Research
https://www.readbyqxmd.com/read/27899468/favorable-swallowing-outcomes-following-vagus-nerve-sacrifice-for-vagal-schwannoma-resection
#18
Mira A Patel, Danielle F Eytan, Justin Bishop, Joseph A Califano
OBJECTIVE: To determine the impact of unilateral vagal sacrifice for vagal schwannoma on postoperative swallowing function. STUDY DESIGN: Case series, chart review. SETTING: Academic medical institution. SUBJECTS AND METHODS: Ten patients underwent vagus nerve sacrifice for vagal schwannoma resection. Archived pathology records dating from 1985 through 2012 at our institution were retrospectively queried for cases of vagal schwannoma with vagus nerve sacrifice...
November 29, 2016: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/27896667/head-and-neck-rhabdomyosarcoma-clinical-and-pathologic-characterization-of-seven-cases
#19
Eleanor Chen, Robert Ricciotti, Neal Futran, Dolphine Oda
Head and neck rhabdomyosarcoma occurs frequently in children and adolescents, and has been well studied in that population. In contrast, it is rare in adults and is not as well characterized clinically and pathologically. Seven cases of adult rhabdomyosarcoma occurring in head and neck were retrieved from the archives of Department of Pathology and Division of Oral Pathology at University of Washington. Radiologic findings and clinical history, as well as pathologic findings from hematoxylin and eosin slides and immunohistochemistry for myogenic markers were reviewed...
November 28, 2016: Head and Neck Pathology
https://www.readbyqxmd.com/read/27896154/use-of-t-tube-enterostomy-in-neonatal-gastro-intestinal-surgery
#20
Maher Al-Zaiem, Abdulhai F Al-Garni, Abdulrahman Al-Maghrebi, Asim A Asghar
Aim: To evaluate the results of the use of the T-tube ileostomy in neonatal intestinal surgery cases. Materials and Methods: A retrospective review of sixty two neonates underwent intestinal obstruction surgery by using T-tube ileostomy was conducted between January 1990 and January 2013.The pathologies of the intestinal obstruction were; thirty four of jejunoileal atresia cases, thirteen case meconium ileus, eight cases perforated necrotizing enterocolitis (NEC), three cases meconium peritonitis, three cases with bowel resection due to intestinal volvulus, and one case of gastroschisis...
October 2016: Journal of Neonatal Surgery
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