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https://www.readbyqxmd.com/read/28431176/effect-of-melatonin-on-renewal-of-chicken-small-intestinal-mucosa
#1
J Li, R X Li, G Liu, C F Lv, Y L Mi, C Q Zhang
A higher concentration of melatonin (MEL) in the intestine - even more than that in the plasma and pineal gland - implies its putative important role in the gastrointestinal structural or functional regulation. However, little evidence has shown that MEL can regulate the physiological functions of the intestinal mucosa. In this study, fertilized chicken eggs were treated with MEL (0.1 to 10 μg/d) from embryonic d 12 (E12) to post-hatching d 6 (D6), and the small intestine samples were collected at D6 to determine the changes in mucosal construction and function...
April 20, 2017: Poultry Science
https://www.readbyqxmd.com/read/28429507/mucinous-hidradenoma-in-a-child-a-case-report-and-review-of-the-literature
#2
Aadil Ahmed, Wendy Kim, Jodi Speiser
Hidradenomas are benign tumors of the sweat glands that are rarely reported in childhood. The presence of mucinous change in hidradenomas, which consists of variable numbers of mucin-rich goblet cells, is occasionally observed in some adult clinical practices. However, it has not been previously reported in the pediatric population. Herein, we present a unique case of a mucinous hidradenoma presenting on the thigh of a 3-year old boy. The clinical presentation and histological features of the case, along with a literature review of published case reports of pediatric hidradenomas are described...
April 21, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28425652/endoscopic-findings-of-esophagogastric-junction-in-children
#3
Yoshiko Nakayama, Shinobu Ida
Esophagogastric landmarks are recognizable in the same way both in children and in adults, and palisade-shaped vessels can be observed at the distal position of esophageal mucosa, even in infants. Few studies have been done in respect to Barrett's esophagus (BE) in children. Incidence of endoscopically suspected BE among all children undergoing esophagogastroduodenoscopy (EGD) is approximately 0.25-1.4%, but can be up to 9.7% in patients with gastroesophageal reflux disease (GERD). Some data suggest that BE is an acquired disorder and point to the possibility of a congenital component in combination with severe mucosal injury...
April 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28420758/the-foxm1-inhibitor-rcm-1-suppresses-goblet-cell-metaplasia-and-prevents-il-13-and-stat6-signaling-in-allergen-exposed-mice
#4
Lifeng Sun, Xiaomeng Ren, I-Ching Wang, Arun Pradhan, Yufang Zhang, Hannah M Flood, Bo Han, Jeffrey A Whitsett, Tanya V Kalin, Vladimir V Kalinichenko
Goblet cell metaplasia and excessive mucus secretion associated with asthma, cystic fibrosis, and chronic obstructive pulmonary disease contribute to morbidity and mortality worldwide. We performed a high-throughput screen to identify small molecules targeting a transcriptional network critical for the differentiation of goblet cells in response to allergens. We identified RCM-1, a nontoxic small molecule that inhibited goblet cell metaplasia and excessive mucus production in mice after exposure to allergens...
April 18, 2017: Science Signaling
https://www.readbyqxmd.com/read/28417051/morphology-of-cat-vomeronasal-organ-non-sensory-epithelium-during-postnatal-development
#5
Sanaa A M Elgayar, Heba M Saad-Eldin, Ola A Haussein
The vomeronasal organ has an important role in mammal's social and sexual behaviours. In addition, it mediates defensive behavior through detection of protein pheromone homologues. In this work, a detailed morphological description of the postnatal development of the non-sensory epithelium (NSE) lining the vomeronasal duct (VND) of the female cat is provided using various histological techniques. The study focused on newborn, 2 weeks, 4 weeks, and 8 weeks of postnatal ages using four animals for each age. We report here for the first time that three types of NSE line the rostral segment of the VND; nonkeratinized stratified squamous epithelium, stratified cuboidal epithelium, and ciliated pseudo stratified columnar ciliated epithelium with goblet cells and that the VND undergoes 90° a change in its its axis from the vertical position caudally to the horizontal position rostral...
March 2017: Anatomy & Cell Biology
https://www.readbyqxmd.com/read/28416688/knockout-of-the-lrrc26-subunit-reveals-a-primary-role-of-lrrc26-containing-bk-channels-in-secretory-epithelial-cells
#6
Chengtao Yang, Vivian Gonzalez-Perez, Taro Mukaibo, James E Melvin, Xiao-Ming Xia, Christopher J Lingle
Leucine-rich-repeat-containing protein 26 (LRRC26) is the regulatory γ1 subunit of Ca(2+)- and voltage-dependent BK-type K(+) channels. BK channels that contain LRRC26 subunits are active near normal resting potentials even without Ca(2+), suggesting they play unique physiological roles, likely limited to very specific cell types and cellular functions. By using Lrrc26 KO mice with a β-gal reporter, Lrrc26 promoter activity is found in secretory epithelial cells, especially acinar epithelial cells in lacrimal and salivary glands, and also goblet and Paneth cells in intestine and colon, although absent from neurons...
April 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28411376/nodular-oncocytic-hyperplasia-can-cytomorphology-allow-for-the-preoperative-diagnosis-of-a-nonneoplastic-salivary-disease
#7
Lisa M Rooper, Mine Onenerk, Momin T Siddiqui, William C Faquin, Justin A Bishop, Syed Z Ali
BACKGROUND: Nodular oncocytic hyperplasia (oncocytosis) of the salivary glands is a benign process that does not inherently require surgical excision. However, cytologic findings in fine-needle aspiration (FNA) of oncocytosis cases have not been well characterized previously, limiting preoperative identification. METHODS: All available cases of oncocytosis with corresponding FNA specimens were identified from the pathology archives of 3 academic institutions. Clinical, cytologic, and histologic findings were tabulated for all cases...
April 14, 2017: Cancer
https://www.readbyqxmd.com/read/28404987/interleukin-33-regulates-intestinal-inflammation-by-modulating-macrophages-in-inflammatory-bowel-disease
#8
Dong Hyuk Seo, Xiumei Che, Min Seob Kwak, Soochan Kim, Jae Hyeon Kim, Hyun Woo Ma, Da Hye Kim, Tae Il Kim, Won Ho Kim, Seung Won Kim, Jae Hee Cheon
Interleukin 33 (IL-33) that signals through the ST2 receptor has emerged as a critical modulator in several inflammatory disorders, including inflammatory bowel disease (IBD). However, the precise mechanisms by which IL-33 modulates IBD are controversial. The aim of this study was thus to clarify the role of IL-33 in IBD. The plasma levels of IL-33 were significantly decreased, but soluble ST2 levels were increased in patients with IBD compared to healthy individuals. Moreover, IL-33 restored goblet cell numbers and induced macrophage switching from the M1 to the M2 phenotype...
April 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28401852/t-helper-type-1-t-helper-type-2-shift-and-nasal-remodeling-after-fine-particulate-matter-exposure-in-a-rat-model-of-allergic-rhinitis
#9
Zhi-Qiang Guo, Wei-Yang Dong, Jian Xu, Zhi-Cong Hong, Ren-Wu Zhao, Cong-Rui Deng, Guo-Shun Zhuang, Ru-Xin Zhang
BACKGROUND: Exposure to fine particulate matter (particulate matter less than or equal to 2.5 mg [PM2.5]) increases therisk of allergic rhinitis (AR), but the underlying mechanisms remains unclear. Thus, we investigated the roles of T-helper (Th)1-Th2 cytokines and nasal remodeling after ambient PM2.5 exposure in a rat model of AR. METHODS: Female Sprague-Dawley rats were randomized into six groups: a negative control group, a group of healthy rats exposed to 3000 mg/m3 PM2...
April 11, 2017: American Journal of Rhinology & Allergy
https://www.readbyqxmd.com/read/28394803/hpv-negative-gastric-type-adenocarcinoma-in-situ-of-the-cervix-a-spectrum-of-rare-lesions-exhibiting-gastric-and-intestinal-differentiation
#10
Karen L Talia, Colin J R Stewart, Brooke E Howitt, Marisa R Nucci, W Glenn McCluggage
In recent years, a number of benign and malignant cervical glandular lesions exhibiting gastric differentiation have been described but premalignant gastric-type lesions have not been well characterized. We report a series of 9 cases of a rare form of cervical adenocarcinoma in situ (AIS) distinguished by gastric and sometimes intestinal differentiation and lack of association with human papillomavirus (HPV) infection. The lesions occurred in women aged 25 to 73 years (mean age 51 y). All cases were located at (or just proximal to) the cervical transformation zone and there was extension to the lower uterine segment in 3 cases, 2 of which also involved the endometrium...
April 7, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28393194/metallothionein-1g-promotes-the-differentiation-of-ht-29-human-colorectal-cancer-cells
#11
Juan Martín Arriaga, Alicia Inés Bravo, José Mordoh, Michele Bianchini
Metallothioneins (MTs) are a family of low-molecular-weight, cysteine-rich proteins involved in zinc and redox metabolism, that are epigenetically downregulated during colorectal cancer (CRC) progression, but may be re-induced with a variety of agents. Since loss of MT expression is associated with a worse prognosis, in the present study we investigated the effects of overexpression of the most significantly downregulated isoform in CRC, namely MT1G, on the HT-29 cell line. Overexpression of MT1G resulted in xenograft tumors with an aberrant morphology, characterized by an evident increase in mucin-containing cells that were identified as goblet cells under electron microscopy...
May 2017: Oncology Reports
https://www.readbyqxmd.com/read/28393183/anti%C3%A2-inflammatory-effects-of-dihydromyricetin-in-a-mouse-model-of-asthma
#12
Bin Xu, Shuran Huang, Caiying Wang, Haitao Zhang, Shengcun Fang, Yingming Zhang
Dihydromyricetin (DHM) is a plant flavonoid and is the primary active ingredient isolated from the medicinal herb, Ampelopsis grossedentata. DHM has been shown to possess various pharmacological activities, including anti‑inflammatory effects. However, the possible role of DHM in asthma treatment remains to be elucidated. The present study aimed to investigate its anti‑inflammatory properties in mice with symptoms of allergic asthma. The C57BL/6 mice were sensitized and challenged with ovalbumin (OVA) to induce asthma...
April 3, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28390933/effects-of-dietary-resveratrol-supplementation-on-hepatic-and-serum-pro-anti-inflammatory-activity-in-juvenile-gift-tilapia-oreochromis-niloticus
#13
Yao Zheng, Zhixiang Zhao, Wei Wu, Chao Song, Shunlong Meng, Limin Fan, Xuwen Bing, Jiazhang Chen
Dietary resveratrol (RES) supplementation may have some pharmacological effects including anti-inflammation. Previous studies have shown that Kupffer cell activation and apoptosis induction increases the transcription of pro- and anti-inflammatory cytokines. The main purpose of this study was to investigate the pro- and anti-inflammatory activities of 0.1 or 0.3 g/kg RES as a dietary supplement in juvenile freshwater tilapia (Oreochromis niloticus). The results showed that hepatic and serum immunoglobulin M (IgM) significantly decreased and increased while anti- and pro-inflammatory cytokines significantly increased and decreased, respectively, in the RES-treated groups...
April 5, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28386657/study-on-the-morphology-histology-and-enzymatic-activity-of-the-digestive-tract-of-gymnocypris-eckloni-herzenstein
#14
Lizhu Yang, Jing Fang, Xi Peng, Hengmin Cui, Min He, Zhicai Zuo, Yi Zhou, Zhuangzhi Yang
The present research was conducted to study the morphology, histology and enzymatic activities of the digestive tract of Gymnocypris eckloni by light and transmission electron microscopes as well as by enzyme assays. The digestive tract of G. eckloni consisted of the oropharyngeal cavity, oesophagus and intestine. The wall of the digestive tract was composed of mucosa, submucosa, muscularis and serosa but lacked muscularis mucosa and glands. The stratified epithelium of the oropharyngeal cavity and oesophagus contained numerous mucous cells...
April 7, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28383034/pulmonary-microrna-profiles-identify-involvement-of-creb1-and-sec14l3-in-bronchial-epithelial-changes-in-allergic-asthma
#15
Sabine Bartel, Nikola Schulz, Francesca Alessandrini, Andrea C Schamberger, Philipp Pagel, Fabian J Theis, Katrin Milger, Elfriede Noessner, Stephen M Stick, Anthony Kicic, Oliver Eickelberg, Robert J Freishtat, Susanne Krauss-Etschmann
Asthma is highly prevalent, but current therapies cannot influence the chronic course of the disease. It is thus important to understand underlying early molecular events. In this study, we aimed to use microRNAs (miRNAs) - which are critical regulators of signaling cascades - to identify so far uncharacterized asthma pathogenesis pathways. Therefore, deregulation of miRNAs was assessed in whole lungs from mice with ovalbumin (OVA)-induced allergic airway inflammation (AAI). In silico predicted target genes were confirmed in reporter assays and in house-dust-mite (HDM) induced AAI and primary human bronchial epithelial cells (NHBE) cultured at the air-liquid interface...
April 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28382873/modulation-of-murine-intestinal-immunity-by-moringa-oleifera-extract-in-experimental-hymenolepiasis-nana
#16
M Abdel-Latif, G El-Shahawi, S M Aboelhadid, H Abdel-Tawab
The potential therapeutic value of Moringa oleifera extract (MOE), due to its anti-inflammatory and anti-oxidant effects, has been reported previously. In this study, Hymenolepis nana antigen (HNA) in combination with MOE was used in immunization against H. nana infection. Adult worm and egg counts were taken, while histological changes in the intestine were observed. Mucosal mast (MMCs) and goblet cells (GCs) were stained with specific stains, while serum and intestinal IgA were assayed using enzyme-linked immunosorbent assay (ELISA)...
April 6, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28380527/modulation-of-intestinal-cell-differentiation-in-growing-pigs-is-dependent-on-the-fiber-source-in-the-diet
#17
M Saqui-Salces, Z Huang, M Ferrandis Vila, J Li, J A Mielke, P E Urriola, G C Shurson
Feeding high-fiber diets decreases cost, but also caloric and nutritional efficiency by modifying intestinal morphology and function. We analyzed the changes in intestinal cell composition, nutrient transporters and receptors, and cell differentiation induced by fibers from different sources. Forty-six finishing pigs (BW 84 ± 7 kg) were fed 1 of 4 diets: corn-soybean (Control; = 12), 23% wheat straw (WS; = 11), 55% corn distillers dried grains with solubles (DDGS; = 11), and 30% soybean hulls (SBH; = 12). Pigs were fed 2 meals daily to an amount equivalent to 2...
March 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28380012/finishing-pigs-that-are-divergent-in-feed-efficiency-show-small-differences-in-intestinal-functionality-and-structure
#18
Barbara U Metzler-Zebeli, Peadar G Lawlor, Elizabeth Magowan, Ursula M McCormack, Tânia Curião, Manfred Hollmann, Reinhard Ertl, Jörg R Aschenbach, Qendrim Zebeli
Controversial information is available regarding the feed efficiency-related variation in intestinal size, structure and functionality in pigs. The present objective was therefore to investigate the differences in visceral organ size, intestinal morphology, mucosal enzyme activity, intestinal integrity and related gene expression in low and high RFI pigs which were reared at three different geographical locations (Austria, AT; Northern Ireland, NI; Republic of Ireland, ROI) using similar protocols. Pigs (n = 369) were ranked for their RFI between days 42 and 91 postweaning and low and high RFI pigs (n = 16 from AT, n = 24 from NI, and n = 60 from ROI) were selected...
2017: PloS One
https://www.readbyqxmd.com/read/28375676/tyrosine-phosphorylation-of-an-actin-binding-protein-girdin-specifically-marks-tuft-cells-in-human-and-mouse-gut
#19
Daisuke Kuga, Kaori Ushida, Shinji Mii, Atsushi Enomoto, Naoya Asai, Masato Nagino, Masahide Takahashi, Masato Asai
Tuft cells (TCs) are minor components of gastrointestinal epithelia, characterized by apical tufts and spool-shaped somas. The lack of reliable TC-markers has hindered the elucidation of its role. We developed site-specific and phosphorylation-status-specific antibodies against Girdin at tyrosine-1798 (pY1798) and found pY1798 immunostaining of mouse jejunum clearly depicted epithelial cells closely resembling TCs. This study aimed to validate pY1798 as a TC-marker. Double-fluorescence staining of intestines was performed with pY1798 and known TC-markers, for example, hematopoietic-prostaglandin-D-synthase (HPGDS), or doublecortin-like kinase 1 (DCLK1)...
April 1, 2017: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
https://www.readbyqxmd.com/read/28373760/role-of-autophagy-in-the-pathogenesis-of-inflammatory-bowel-disease
#20
REVIEW
Tomoya Iida, Kei Onodera, Hiroshi Nakase
Inflammatory bowel disease (IBD) results from a complex series of interactions between susceptibility genes, the environment, and the immune system. Recently, some studies provided strong evidence that the process of autophagy affects several aspects of mucosal immune responses. Autophagy is a cellular stress response that plays key roles in physiological processes, such as innate and adaptive immunity, adaptation to starvation, degradation of aberrant proteins or organelles, antimicrobial defense, and protein secretion...
March 21, 2017: World Journal of Gastroenterology: WJG
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