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https://www.readbyqxmd.com/read/28228364/phenolic-compounds-isolated-from-dioscorea-zingiberensis-protect-against-pancreatic-acinar-cells-necrosis-induced-by-sodium-taurocholate
#1
Dan Du, Tao Jin, Rui Zhang, Liqiang Hu, Zhihua Xing, Na Shi, Yan Shen, Meng Gong
One new bibenzyl (1) and one new phenanthrene (2), together with two known bibenzyls (3-4) and four known diarylheptanoids (5-8) were isolated from the rhizomes of Dioscorea zingiberensis. The structures of 1-2 were elucidated by spectroscopic methods including 1D and 2D NMR. Phenols 1-8 were evaluated for their anti-pancreatitic activities on sodium taurocholate (NaT)-induced pancreatic acinars necrosis. Notably, 0.5mM of compound 6 exhibited comparable inhibitory effect with 5mM of caffeine. Furthermore, compound 6 prevented the ATP depletion and excessive ROS production which could be also involved in mitochondria-mediated injuries in acute pancreatitis...
January 7, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28222888/acinar-cell-response-to-liquid-diet-during-rats-growth-period-differs-in-submandibular-and-sublingual-glands-from-that-in-parotid-glands
#2
Shigeru Takahashi, Hiroki Uekita, Hiroto Taniwaki, Takanori Domon
Continuously feeding a liquid diet to growing rodents strongly inhibits parotid gland growth, due to suppressed growth of acinar cells. This study investigated whether a liquid diet had a similar effect on submandibular and sublingual glands of growing rats. Rats were weaned on day 21 after birth and then fed a pellet diet in the control group and a liquid diet in the experimental group for 0, 1, 2, 4, and 8 weeks. Their submandibular and sublingual glands were excised, weighed, and examined histologically, immunohistochemically (using antibodies to 5'-bromo-2-deoxyuridine and cleaved caspase 3), and ultrastructurally...
February 8, 2017: Tissue & Cell
https://www.readbyqxmd.com/read/28215484/establishment-and-characterization-of-a-new-human-acinar-cell-carcinoma-cell-line-faraz-icr-from-pancreas
#3
Marzieh Rezaei, Ahmad Hosseini, Saman Nikeghbalian, Abbas Ghaderi
OBJECTIVES: Basic research in the field of acinar cell carcinoma (ACC) as a rare neoplasm of the pancreas is dependent on the availability of pragmatic model such as new pancreatic cancer cell lines. Thus, establishment and characterization of new pancreatic cancer cell lines from ACC origin are deemed important. METHODS: Faraz-ICR cell line was derived from a 58-years old woman with pancreatic acinar cell carcinoma by the collagenase digestion protocol. We characterized the cell line by examining its morphology and cytostructural and functional profile...
February 8, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/28214199/primary-acinic-cell-carcinoma-of-the-lung-with-psammoma-bodies-a-case-report-and-review-of-literature
#4
Xiu-Peng Zhang, Gui-Yang Jiang, Qing-Fu Zhang, Hong-Tao Xu, Qing-Chang Li, En-Hua Wang
Salivary gland-type tumors are rare in the lung. Primary acinic cell carcinoma of the lung is extremely rare. Here, we report a case of primary acinic cell carcinoma of the lung with prominent psammoma bodies. A 31-year-old man came to our hospital with a tumor in the basal segment of the lower lobe of the right lung. The tumor tissue displayed solid, acinar, or microcystic structures at different regions. A large amount of psammoma bodies were scattered in more than half of the tumor. The majority of the tumor cells were round or polygonal in shape, with abundant acidophilic granular or vacuolated cytoplasm...
January 19, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28212783/role-of-topical-dehydroepiandrosterone-in-ameliorating-isotretinoin-induced-meibomian-gland-dysfunction-in-adult-male-albino-rat
#5
Marwa A A Ibrahim, Walaa M Elwan
Isotretinoin broad effectiveness is limited by its detrimental effect on the Meibomian glands. Androgens have been reported to regulate the Meibomian gland function. Dehydroepiandrosterone (DHEA) is an androgen precursor considered as an efficient and physiological anti-ageing skin agent. This study aimed to investigate the role of the topical DHEA in ameliorating Meibomian gland dysfunction caused by isotretinoin employing different histological and immunohistochemical techniques. Twenty-four adult male albino rats were divided into four equal groups; control group, DHEA-treated group (1% twice daily for 3 months), isotretinoin-treated group (0...
February 21, 2017: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/28208669/the-role-of-nerve-growth-factor-ngf-and-its-precursor-forms-in-oral-wound-healing
#6
REVIEW
Karl Schenck, Olav Schreurs, Katsuhiko Hayashi, Kristen Helgeland
Nerve growth factor (NGF) and its different precursor forms are secreted into human saliva by salivary glands and are also produced by an array of cells in the tissues of the oral cavity. The major forms of NGF in human saliva are forms of pro-nerve growth factor (pro-NGF) and not mature NGF. The NGF receptors tropomyosin-related kinase A (TrkA) and p75 neurotrophin receptor (p75(NTR)) are widely expressed on cells in the soft tissues of the human oral cavity, including keratinocytes, endothelial cells, fibroblasts and leukocytes, and in ductal and acinar cells of all types of salivary glands...
February 11, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28208029/l1-peptide-conjugated-fibrin-hydrogels-promote-salivary-gland-regeneration
#7
K Nam, C-S Wang, C L M Maruyama, P Lei, S T Andreadis, O J Baker
Hyposalivation contributes to dental caries, periodontitis, and microbial infections. Additionally, it impairs activities of daily living (e.g., speaking, chewing, and swallowing). Treatments for hyposalivation are currently limited to medications (e.g., the muscarinic receptor agonists pilocarpine and cevimeline) that induce saliva secretion from residual acinar cells and the use of saliva substitutes. However, given that these therapies provide only temporary relief, the development of alternative treatments to restore gland function is essential...
February 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28195247/type-ii-congenital-pulmonary-airway-malformation-associated-with-intralobar-pulmonary-sequestration-report-of-a-case-and-review-of-classification-criteria
#8
M G Mastrogiulio, A Barone, M G Disanto, A Ginori, M R Ambrosio, S F Carbone, D Spina
Pulmonary congenital abnormalities are rare disorders including congenital pulmonary airway malformations (CPAM) and pulmonary sequestration (PS). CPAM is a lesion characterized by the presence of anomalous bronchiolar or acinar structures, variable in size, either cystic or not cystic. PS is generally defined as nonfunctioning lung tissue that is not in normal continuity with the tracheobronchial tree and that derives its blood supply from systemic vessels. We describe a case of a baby girl with a very rare association between CPAM type 2 and intralobar pulmonary sequestration (IPS) focusing on the cystic lesions typical of CPAM and on the lymphatic and blood vessels...
March 2016: Pathologica
https://www.readbyqxmd.com/read/28195088/serotonin-receptor-4-5-hydroxytryptamine-receptor-type-4-regulates-expression-of-estrogen-receptor-beta-and-cell-migration-in-hormone-naive-prostate-cancer
#9
Yasuhiro Nakamura, Kazue Ise, Yuto Yamazaki, Fumiyoshi Fujishima, Keely M McNamara, Hironobu Sasano
BACKGROUND: Estrogens are considered to potentially play some roles in the development and progression of prostate cancer through estrogen receptor beta (ERβ). However, additional factors which could influence the clinical outcome of the patients through modulating these steroid signalings have also been proposed. Among these, increased expression of serotonin receptor especially that of 5-hydroxytryptamine receptor Type 4 (5-HTR4) has been recently proposed to be involved in autocrine/paracrine mechanisms of castration-resistant prostate cancer, but the presence and clinical significance of 5-HTR4 in hormone-naive prostate cancer (HNPC) and its interaction with hormonal signaling pathways have remained virtually unknown...
January 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28194567/ultrastructural-characterization-of-mammary-analogue-secretory-carcinoma-of-the-salivary-glands-a-distinct-entity-from-acinic-cell-carcinoma
#10
Julie Guilmette, Gunnlaugur P Nielsen, William C Faquin, Martin Selig, Vânia Nosé, Anthony W S Chi, Peter M Sadow
Mammary analogue secretory carcinoma (MASC) of the salivary glands is a recently described neoplasm of the salivary glands with a characteristic morphology complemented by a specific cytogenetic translocation and gene rearrangements. Although immunophenotypic and cytogenetic differences allow for a more reliable distinction, ultrastructural features can also provide important information about the relationship between MASC, classic acinic cell carcinoma (AciCC), and AciCC intercalated duct cell-predominant variant...
February 13, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28190925/spontaneous-infarcted-adenoma-of-the-mammary-gland-in-a-wistar-hannover-galas-rat
#11
Kohei Matsushita, Takeshi Toyoda, Kaoru Inoue, Tomomi Morikawa, Mizuki Sone, Kumiko Ogawa
Spontaneous massive infarction of mammary gland tumors has been reported to occur infrequently in humans. A subcutaneous mass (18 × 17 × 10 mm) was observed in the right axilla extending to the chest region of a 110-week-old female Wistar Hannover GALAS rat. Histopathologically, a well-circumscribed mass with lobular structures was present in the subcutis. Most of the mass was occupied by extensive coagulative necrosis of neoplastic cells with relatively uniform acinar and ductal structures. Although each necrotic acinar structure was separated by reticular fibers, periacinar stromal collagen fibers were not abundant...
January 2017: Journal of Toxicologic Pathology
https://www.readbyqxmd.com/read/28190924/hyperglycemia-simultaneously-induces-initial-caries-development-and-enhances-spontaneous-occlusal-surface-wear-in-molar-teeth-related-to-parotid-gland-disorder-in-alloxan-induced-diabetic-rats
#12
Taiki Nishimoto, Yasushi Kodama, Tetsuro Matsuura, Kiyokazu Ozaki, Yoshihiko Taniguchi
Diabetes and salivary gland dysfunction are major factors that induce dental caries in experimental animals, but there are no reports analyzing the association of dental caries and salivary glands in an animal model of diabetes mellitus (DM). To clarify the initial development of dental caries and preceding salivary gland disorder, we performed a histopathological analysis on teeth and salivary glands in diabetic Wistar rats 7 weeks after alloxan treatment (DM group) in comparison with nondiabetic rats (Non-DM group) and functional analysis on saliva secretion during the experimental period...
January 2017: Journal of Toxicologic Pathology
https://www.readbyqxmd.com/read/28188746/context-dependent-epigenetic-regulation-of-nuclear-factor-of-activated-t-cells-1-in-pancreatic-plasticity
#13
Nai-Ming Chen, Albrecht Neesse, Moritz Lino Dyck, Benjamin Steuber, Alexander O Koenig, Clara Lubeseder-Martellato, Thore Winter, Teresa Forster, Hanibal Bohnenberger, Julia Kitz, Kirsten-Reuter Jessen, Heidi Griesmann, Jochen Gaedcke, Marian Grade, Jin-San Zhang, Wan-Chi Tsai, Jens Siveke, Hans-Ulrich Schildhaus, Philipp Ströbel, Steven A Johnsen, Volker Ellenrieder, Elisabeth Hessmann
BACKGROUND & AIMS: The ability of exocrine pancreatic cells to change the cellular phenotype is required for tissue regeneration upon injury but also contributes to their malignant transformation and tumor progression. We investigated context-dependent signaling and transcription mechanisms that determine pancreatic cell fate decisions toward regeneration and malignancy. In particular, we studied the function and regulation of the inflammatory transcription factor nuclear factor of activated T cells 1 (NFATC1) in pancreatic cell plasticity and tissue adaptation...
February 7, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28182081/cytopathologic-features-of-an-unusual-case-of-multiple-eccrine-spiradenomas-misdiagnosed-as-a-malignant-round-cell-tumor
#14
Bharat Rekhi, Archi Agarwal
A 28-year-old lady presented with multiple swellings in her left shoulder, associated with intermittent pain since last one and a half years. Radiologic imaging revealed multiple, well-defined, subcutaneous lesions in her left supraclavicular region. Fine needle aspiration cytology (FNAC) smears were initially reported as Ewing sarcoma, elsewhere. On review, the smears showed cohesive clusters of round-to-oval cells with scant cytoplasm, which were focally arranged in an acinar-rosetting pattern around hyaline "droplets/bodies," along with few scattered lymphocytes against a background of red blood cells...
January 2017: Journal of Cytology
https://www.readbyqxmd.com/read/28181236/ca-2-tunneling-through-the-er-lumen-as-a-mechanism-for-delivering-ca-2-entering-via-store-operated-ca-2-channels-to-specific-target-sites
#15
Ole H Petersen, Raphael Courjaret, Khaled Machaca
Ca(2+) signalling is perhaps the most universal and versatile mechanism regulating a wide range of cellular processes. Because of the many different calcium-binding proteins distributed throughout cells, signalling precision requires localized rises in the cytosolic Ca(2+) concentration. In electrically non-excitable cells, for example epithelial cells, this is achieved by primary release of Ca(2+) from the endoplasmic reticulum via Ca(2+) release channels placed close to the physiological target. Because any rise in the cytosolic Ca(2+) concentration activates Ca(2+) extrusion, and in order for cells not to run out of Ca(2+) , there is a need for compensatory Ca(2+) uptake from the extracellular fluid...
February 9, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28177730/impaired-mitochondria-and-intracellular-calcium-transients-in-the-salivary-glands-of-obese-rats
#16
Jitjiroj Ittichaicharoen, Nattayaporn Apaijai, Pongpan Tanajak, Piangkwan Sa-Nguanmoo, Nipon Chattipakorn, Siriporn C Chattipakorn
PURPOSE: Long-term consumption of a high-fat diet (HFD) causes not only obese-insulin resistance, but is also associated with mitochondrial dysfunction in several organs. However, the effect of obese-insulin resistance on salivary glands has not been investigated. We hypothesized that obese-insulin resistance induced by HFD impaired salivary gland function by reducing salivation, increasing inflammation and fibrosis, as well as impairing mitochondrial function and calcium transient signaling...
December 21, 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28174730/inhibitors-of-arg-gly-asp-binding-integrins-reduce-development-of-pancreatic-fibrosis-in-mice
#17
Barbara Ulmasov, Brent A Neuschwander-Tetri, Jinping Lai, Vladimir Monastyrskiy, Trisha Bhat, Matthew P Yates, Jonathan Oliva, Michael J Prinsen, Peter G Ruminski, David W Griggs
BACKGROUND & AIMS: Pancreatic stellate cells (PSCs) regulate the development of chronic pancreatitis (CP) and are activated by the cytokine transforming growth factor β (TGFB). Integrins of the αv family promote TGFB signaling in mice, probably by interacting with the Arg-Gly-Asp (RGD) sequence of the TGFB latency-associated peptide, which frees TGFB to bind its cellular receptors. However, little is known about the role of integrins in the development of CP. We investigated the effects of small-molecule integrin inhibitors in a mouse model of CP...
July 2016: Cellular and Molecular Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28174728/necrosis-apoptosis-necroptosis-pyroptosis-it-matters-how-acinar-cells-die-during-pancreatitis
#18
EDITORIAL
Matthias Sendler, Julia Mayerle, Markus M Lerch
No abstract text is available yet for this article.
July 2016: Cellular and Molecular Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28170196/lacrimal-gland-repair-using-progenitor-cells
#19
Anastasia Gromova, Dmitry A Voronov, Miya Yoshida, Suharika Thotakura, Robyn Meech, Darlene A Dartt, Helen P Makarenkova
In humans, the lacrimal gland (LG) is the primary contributor to the aqueous layer of the tear film. Production of tears in insufficient quantity or of inadequate quality may lead to aqueous-deficiency dry eye (ADDE). Currently there is no cure for ADDE. The development of strategies to reliably isolate LG stem/progenitor cells from the LG tissue brings great promise for the design of cell replacement therapies for patients with ADDE. We analyzed the therapeutic potential of epithelial progenitor cells (EPCPs) isolated from adult wild-type mouse LGs by transplanting them into the LGs of TSP -1(-/-) mice, which represent a novel mouse model for ADDE...
January 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28170182/primary-salivary-human-stem-progenitor-cells-undergo-microenvironment-driven-acinar-like-differentiation-in-hyaluronate-hydrogel-culture
#20
Padma Pradeepa Srinivasan, Vaishali N Patel, Shuang Liu, Daniel A Harrington, Matthew P Hoffman, Xinqiao Jia, Robert L Witt, Mary C Farach-Carson, Swati Pradhan-Bhatt
Radiotherapy for head and neck cancer often has undesirable effects on salivary glands that lead to xerostomia or severe dry mouth, which can increase oral infections. Our goal is to engineer functional, three-dimensional (3D) salivary gland neotissue for autologous implantation to provide permanent relief. An immediate need exists to obtain autologous adult progenitor cells as the use of embryonic and induced pluripotent stem cells potentially pose serious risks such as teratogenicity and immunogenic rejection...
January 2017: Stem Cells Translational Medicine
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