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Salivary glands

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https://www.readbyqxmd.com/read/29782810/chloride-and-sodium-ion-concentrations-in-saliva-and-sweat-as-a-method-to-diagnose-cystic-fibrosis
#1
Aline Cristina Gonçalves, Fernando Augusto Lima Marson, Regina Maria Holanda Mendonça, Carmen Sílvia Bertuzzo, Ilma Aparecida Paschoal, José Dirceu Ribeiro, Antônio Fernando Ribeiro, Carlos Emílio Levy
OBJECTIVE: Cystic fibrosis diagnosis is dependent on the chloride ion concentration in the sweat test (≥60mEq/mL - recognized as the gold standard indicator for cystic fibrosis diagnosis). Moreover, the salivary glands express the CFTR protein in the same manner as sweat glands. Given this context, the objective was to verify the correlation of saliva chloride concentration (SaCl) and sweat chloride concentration (SwCl), and between saliva sodium concentration (SaNa) and sweat sodium concentration (SwNa), in patients with cystic fibrosis and healthy control subjects, as a tool for cystic fibrosis diagnosis...
May 18, 2018: Jornal de Pediatria
https://www.readbyqxmd.com/read/29781999/preparation-of-murine-submandibular-salivary-gland-for-upright-intravital-microscopy
#2
Xenia Ficht, Flavian Thelen, Bettina Stolp, Jens V Stein
The submandibular salivary gland (SMG) is one of the three major salivary glands, and is of interest for many different fields of biological research, including cell biology, oncology, dentistry, and immunology. The SMG is an exocrine gland comprised of secretory epithelial cells, myofibroblasts, endothelial cells, nerves, and extracellular matrix. Dynamic cellular processes in the rat and mouse SMG have previously been imaged, mostly using inverted multi-photon microscope systems. Here, we describe a straightforward protocol for the surgical preparation and stabilization of the murine SMG in anesthetized mice for in vivo imaging with upright multi-photon microscope systems...
May 7, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29781993/murine-salivary-functional-assessment-via-pilocarpine-stimulation-following-fractionated-radiation
#3
Jomy J Varghese, Isaac L Schmale, Mollie Eva Hansen, Shawn D Newlands, Danielle S W Benoit, Catherine E Ovitt
Hyposalivation is commonly observed in the autoimmune reaction of Sjögren's syndrome or following radiation injury to the major salivary glands. In these cases, questions remain regarding disease pathogenesis and effective interventions. An optimized technique that allows functional assessment of the salivary glands is invaluable for investigating exocrine gland biology, dysfunction, and therapeutics. Here, we present a step by step approach to performing pilocarpine stimulated saliva secretion, including tracheostomy and the dissection of the three major murine salivary glands...
May 4, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29781991/retroductal-nanoparticle-injection-to-the-murine-submandibular-gland
#4
Jomy J Varghese, Isaac L Schmale, Yuchen Wang, Mollie Eva Hansen, Shawn D Newlands, Catherine E Ovitt, Danielle S W Benoit
Two common goals of salivary gland therapeutics are prevention and cure of tissue dysfunction following either autoimmune or radiation injury. By locally delivering bioactive compounds to the salivary glands, greater tissue concentrations can be safely achieved versus systemic administration. Furthermore, off target tissue effects from extra-glandular accumulation of material can be dramatically reduced. In this regard, retroductal injection is a widely used method for investigating both salivary gland biology and pathophysiology...
May 3, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29780749/-rhipicephalus-bursa-sialotranscriptomic-response-to-blood-feeding-and-babesia-ovis-infection-identification-of-candidate-protective-antigens
#5
Sandra Antunes, Joana Couto, Joana Ferrolho, Fábio Rodrigues, João Nobre, Ana S Santos, M Margarida Santos-Silva, José de la Fuente, Ana Domingos
Ticks are among the most prevalent blood-feeding arthropods, and they act as vectors and reservoirs for numerous pathogens. Sialotranscriptomic characterizations of tick responses to blood feeding and pathogen infections can offer new insights into the molecular interplay occurring at the tick-host-pathogen interface. In the present study, we aimed to identify and characterize Rhipicephalus bursa salivary gland (SG) genes that were differentially expressed in response to blood feeding and Babesia ovis infection...
2018: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/29780105/a-case-of-longstanding-igg4-related-ophthalmic-disease-dramatically-improved-after-steroid-therapy
#6
Yoko Hirata, Jiro Fukae, Akihiro Nishida, Shinsuke Fujioka, Mokoto Hamasaki, Masanari Nonokuma, Yoshio Tsuboi
A 61-year-old man was admitted to our hospital because of decreased visual acuity. On admission, he had marked blepharoedema, conjunctival injection, exophthalmos, diplopia, and blurred vision. He also had bronchial asthma and urinary retention requiring urethral catheterization. His serum immunoglobulin (Ig) G4 level was elevated to 1,830 U/mL. Fluorodeoxyglucose-positron emission tomography revealed an abnormal uptake in multiple organs. A histopathological examination of the salivary gland revealed IgG4-positive plasma cell infiltration, leading to a diagnosis of IgG4-related ophthalmic disease...
May 18, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29779285/-advances-in-the-molecular-mechanisms-of-perineural-invasion-in-salivary-adenoid-cystic-carcinoma
#7
Mei Zhang, Xin-Hua Liang, Ya-Ling Tang
Salivary adenoid cystic carcinoma is a very common malignant neoplasm in the salivary glands. One of the most important features of salivary cystic carcinoma is perineural invasion, which renders its complete removal is very difficult through clinical surgery. Consequently, tumor recurrence occurs easily after clinical surgery. Therefore, the molecular mechanisms of perineural invasion in salivary adenoid cystic carcinoma are necessary to explore. These mechanisms are reviewed in this paper.
April 1, 2018: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/29779010/low-mir200b-5p-levels-in-minor-salivary-glands-a-novel-molecular-marker-predicting-lymphoma-development-in-patients-with-sj%C3%A3-gren-s-syndrome
#8
Efstathia K Kapsogeorgou, Aristea Papageorgiou, Athanase D Protogerou, Michael Voulgarelis, Athanasios G Tzioufas
OBJECTIVES: Development of non-Hodgkin's lymphoma (NHL) is the major adverse outcome of Sjögren's syndrome (SS) affecting both morbidity and mortality. Preliminary evidence suggested that, although not deregulated compared with sicca controls, miR200b-5p levels are decreased in the minor salivary glands (MSGs) of SS patients with NHL. The aim of the current study was to evaluate the MSG expression of miR200b-5p in SS-associated NHLs and its potential predictive value for the identification of patients with SS susceptible to develop NHL...
May 19, 2018: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/29777899/congenital-dyshormonogenic-hypothyroidism-with-goiter-caused-by-a-sodium-iodide-symporter-slc5a5-mutation-in-a-family-of-shih-tzu-dogs
#9
E A Soler Arias, V A Castillo, J D Garcia, J C Fyfe
An iodide transport defect (ITD) in the thyroid gland was determined to cause congenital dyshormonogenic hypothyroidism with goiter (CDHG) in 2 members of a family of Shih-Tzu dogs. Strikingly, both dogs were also diagnosed with dilated cardiomyopathy at 24 and 1.5 mo of age. The only sign of hypothyroidism was a moderate growth delay in the adult dog. The ITD was recognized by the absence of uptake of technetium-99m in the salivary glands (sg) and goiter observed by scintigraphy. In the same scan, radiopharmaceutical uptake was found in the anterior mediastinum of both dogs and in the right axillary lymph node in the oldest dog...
April 24, 2018: Domestic Animal Endocrinology
https://www.readbyqxmd.com/read/29776537/comparative-study-on-metabolite-level-in-tissue-specific-human-mesenchymal-stem-cells-by-an-ultra-performance-liquid-chromatography-quadrupole-time-of-flight-mass-spectrometry
#10
Seul Ji Lee, TacGhee Yi, Soo Hyun Ahn, Dong Kyu Lim, Si-Na Kim, Hyun-Joo Lee, Yun-Kyoung Cho, Jae-Yol Lim, Jong-Hyuk Sung, Jeong-Ho Yun, Johan Lim, Sun U Song, Sung Won Kwon
Mesenchymal stem cells (MSCs) are a promising therapeutic option for cell-based therapy due to their immunomodulatory and regenerative properties. They can be isolated from various adult tissues, including bone marrow, fat, dental tissue, and glandular tissue. Although they share common characteristics, little is known about the biological differences between MSC populations derived from different tissues. In this study, we used MS to compare the endogenous metabolite level in the human MSCs originating from the bone marrow, adipose tissue, periodontal ligaments, and salivary glands...
September 18, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29773559/serrate-notch-signaling-regulates-the-size-of-the-progenitor-cell-pool-in-drosophila-imaginal-rings
#11
Sheng-An Yang, Wu-Min Deng
Drosophila imaginal rings are larval tissues composed of progenitor cells that are essential for the formation of adult foreguts, hindguts and salivary glands. Specified from subsets of ectoderm in the embryo, imaginal ring cells are kept quiescent until mid-second larval instar, and undergo rapid proliferation during the third instar to attain adequate numbers of cells that will replace apoptotic larval tissues for adult organ formation. Here we show that Notch signaling is activated in all three imaginal rings from middle embryonic stage to early pupal stage and that Notch signaling positively controls cell proliferation in all three imaginal rings during the third larval instar...
May 17, 2018: Genetics
https://www.readbyqxmd.com/read/29772025/shape-shifting-trypanosomes-flagellar-shortening-followed-by-asymmetric-division-in-trypanosoma-congolense-from-the-tsetse-proventriculus
#12
Lori Peacock, Christopher Kay, Mick Bailey, Wendy Gibson
Trypanosomatids such as Leishmania and Trypanosoma are digenetic, single-celled, parasitic flagellates that undergo complex life cycles involving morphological and metabolic changes to fit them for survival in different environments within their mammalian and insect hosts. According to current consensus, asymmetric division enables trypanosomatids to achieve the major morphological rearrangements associated with transition between developmental stages. Contrary to this view, here we show that the African trypanosome Trypanosoma congolense, an important livestock pathogen, undergoes extensive cell remodelling, involving shortening of the cell body and flagellum, during its transition from free-swimming proventricular forms to attached epimastigotes in vitro...
May 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29771921/mosquito-saliva-alone-has-profound-effects-on-the-human-immune-system
#13
Megan B Vogt, Anismrita Lahon, Ravi P Arya, Alexander R Kneubehl, Jennifer L Spencer Clinton, Silke Paust, Rebecca Rico-Hesse
Mosquito saliva is a very complex concoction of >100 proteins, many of which have unknown functions. The effects of mosquito saliva proteins injected into our skin during blood feeding have been studied mainly in mouse models of injection or biting, with many of these systems producing results that may not be relevant to human disease. Here, we describe the numerous effects that mosquito bites have on human immune cells in mice engrafted with human hematopoietic stem cells. We used flow cytometry and multiplex cytokine bead array assays, with detailed statistical analyses, to detect small but significant variations in immune cell functions after 4 mosquitoes fed on humanized mice footpads...
May 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29770656/-study-on-expression-characteristics-of-cytochrome-p450-genes-in-anopheles-sinensis
#14
Wei Mo, Tang Jian-Xia, Li Ju-Lin, Zhang Mei-Hua, Chen Jing, Xu Sui, Cao Yuan-Yuan, Yang Meng-Meng, Zhu Guo-Ding, Zhou Hua-Yun, Cao Jun
OBJECTIVE: To explore the expression characteristics of cytochrome P450 (CYP) candidate genes (CYP6M3, CYP6Y1, CYP6P5, CYP4H14, CYP4G17, CYP12F16) in Anopheles sinensis . METHODS: The samples were collected from different developmental stages (eggs, larvae, pupae and adult mosquitoes (females and males) ), and different tissues (salivary glands, malpighian tubes, midguts, ovaries, and fat bodies) of An. sinensis and the female adult mosquitoes exposed by different insecticide doses (0, 1...
April 20, 2018: Zhongguo Xue Xi Chong Bing Fang Zhi za Zhi, Chinese Journal of Schistosomiasis Control
https://www.readbyqxmd.com/read/29770587/an-unusual-case-of-pulmonary-hamartoma-with-predominant-bronchial-mucous-glands-in-the-peripheral-lung
#15
Rin Yamada, Akiko Tonooka, Shin-Ichiro Horiguchi, Toru Motoi, Horio Hirotoshi, Tsunekazu Hishima
Pulmonary hamartoma (PH) is the most common benign lung tumor, comprising various amounts of mescenchymal components with entrapped epithelial components. We describe an unusual case of PH in the left lower lung lobe of a 60-year-old female. The tumor was 9 × 9 mm in size, light brown, weakly glistening, and microscopically found to be composed of well-developed epithelial and mesenchymal components without atypia. Both components were intermingled but without apparent transition. Epithelial components were occupied by predominant bronchial mucous glands...
May 16, 2018: Pathology International
https://www.readbyqxmd.com/read/29769002/defense-mechanisms-against-acid-exposure-by-dental-enamel-formation-saliva-and-pancreatic-juice-production
#16
Robert Racz, Akos Nagy, Zoltan Rakonczay, Erika Katalin Dunavari, Gabor Gerber, Gabor Varga
The pancreas, the salivary glands and the dental enamel producing ameloblasts have marked developmental, structural and functional similarities. One of the most striking similarities is their bicarbonate-rich secretory product serving acid neutralization. An important difference between them is that while pancreatic juice and saliva are delivered into a lumen where they can be collected and analyzed, ameloblasts produce locally precipitating hydroxyapatite which cannot be easily studied. Interestingly, the ion and protein secretion by the pancreas, the salivary glands, and maturation ameloblasts are all two-step processes, of course with significant differences too...
May 15, 2018: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29768362/intraductal-papilloma-arising-from-the-accessory-parotid-gland-a-case-report-and-literature-review
#17
Shuai Sun, Panpan Wang, Yufan Wang, Wen Su, Feng Wang, Hongyu Yang
RATIONALE: Intraductal papillomas of the accessory parotid glands are extremely rare benign tumors that are most commonly derived from minor salivary glands and are easily misdiagnosed as other diseases. Studying these lesions by pathology and immunohistochemistry can raise awareness of the disease, reduce the rate of misdiagnosis, and provide more precise treatments. PATIENT CONCERNS: A 35-year-old man first presented to our hospital with a 6-month history of a painless mass on his left parotid gland...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29767566/external-beam-radiotherapy-for-the-treatment-of-feline-salivary-gland-carcinoma-six-new-cases-and-a-review-of-the-literature
#18
Laura Blackwood, Aaron Harper, James Elliott, Irina Gramer
Case series summary Salivary gland carcinoma is uncommon in cats. We report the outcome of radiation therapy in six cases (four salivary gland adenocarcinomas, one tubulopapillary adenocarcinoma, one carcinoma). Five were treated after surgical excision of the primary tumour, but four had gross disease (primary or metastatic) at the time of starting radiotherapy. Exact progression-free interval from the start of radiotherapy in the two cats where this was known was 120 and 144 days, respectively. One cat was signed off at 766 days with no evidence of recurrence...
May 1, 2018: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/29766572/multiple-superficial-oral-mucoceles-after-mycoplasma-induced-mucositis
#19
Meggie Morand, Afshin Hatami
Oral mucoceles are lesions arising mainly from the minor salivary glands and are thought to occur after excretory duct trauma. We report a case of multiple superficial oral mucoceles on a child's labial mucosa after Mycoplasma pneumoniae mucositis. Mucoceles can mimic persistent or recurrent stomatitis and lead to potential errors in management.
May 15, 2018: Pediatric Dermatology
https://www.readbyqxmd.com/read/29766278/adenomatous-ductal-proliferation-hyperplasia-in-the-parotid-gland-associated-without-any-other-pathological-lesions-a-report-and-survey-of-the-literatures
#20
Bhoj Raj Adhikari, Michiko Nishimura, Kosuke Takimoto, Fumiya Harada, Aya Onishi, Daichi Hiraki, Durga Paudel, Puja Neopane, Masafumi Utsunomiya, Tetsuro Morikawa, Koki Yoshida, Jun Sato, Mamata Shakya, Eiji Nakayama, Hiroki Nagayasu, Yoshihiro Abiko
Adenomatous ductal proliferation/hyperplasia (ADP/H) is a rare hyperplastic condition of the salivary gland. It is mostly associated with other salivary gland pathologies such as tumors and inflammations, and is incidentally found in tissue sections during histopathological examinations of those diseases. Herein, we report a case of ADP/H in the parotid gland not associated with any other pathological lesions, and present a review of the literature on this condition. A 60-year-old Japanese female complained of swelling on the left side of parotid region...
May 15, 2018: Medical Molecular Morphology
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