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https://www.readbyqxmd.com/read/29205957/comparison-of-two-tools-to-assess-dyad-feeding-interaction-in-infants-with-gastroesophageal-reflux-disease
#1
Meredith Jameson, Karen Fehringer, Madalynn Neu
PURPOSE: The aim of this study was to compare the Mother-Infant/Toddler Feeding Scale (MITFS) and the Nursing Child Assessment Feeding Scale (NCAFS). Specific questions were as follows: (1) Are there differences between the results of the MITFS and the NCAFS tools in terms of rating infant feeding interactions? And (2) does one tool provide a more detailed, nuanced overview of the quality of feeding interactions than the other? DESIGN AND METHODS: This comparative descriptive study is a secondary analysis of a study evaluating a massage intervention for infants with symptoms of gastroesophageal reflux disease (GERD)...
December 4, 2017: Journal for Specialists in Pediatric Nursing: JSPN
https://www.readbyqxmd.com/read/29202482/ligand-activated-bmp-signaling-inhibits-cell-differentiation-and-death-to-promote-melanoma
#2
Arvind M Venkatesan, Rajesh Vyas, Alec K Gramann, Karen Dresser, Sharvari Gujja, Sanchita Bhatnagar, Sagar Chhangawala, Camilla Borges Ferreira Gomes, Hualin Simon Xi, Christine G Lian, Yariv Houvras, Yvonne J K Edwards, April Deng, Michael Green, Craig J Ceol
Oncogenomic studies indicate that copy number variation (CNV) alters genes involved in tumor progression; however, identification of specific driver genes affected by CNV has been difficult, as these rearrangements are often contained in large chromosomal intervals among several bystander genes. Here, we addressed this problem and identified a CNV-targeted oncogene by performing comparative oncogenomics of human and zebrafish melanomas. We determined that the gene encoding growth differentiation factor 6 (GDF6), which is the ligand for the BMP family, is recurrently amplified and transcriptionally upregulated in melanoma...
December 4, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29181082/sox10-mitf-pathway-activity-in-melanoma-cells
#3
Karol B Tudrej, Edyta Czepielewska, Małgorzata Kozłowska-Wojciechowska
Melanoma is one of the most dangerous and lethal skin cancers, with a considerable metastatic potential and drug resistance. It involves a malignant transformation of melanocytes. The exact course of events in which melanocytes become melanoma cells remains unclear. Nevertheless, this process is said to be dependent on the occurrence of cells with the phenotype of progenitor cells - cells characterized by expression of proteins such as nestin, CD-133 or CD-271. The development of these cells and their survival were found to be potentially dependent on the neural crest stem cell transcription factor SOX10...
October 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29179997/elevated-cyclic-amp-levels-promote-brafca-pten-mouse-melanoma-growth-but-pcreb-is-negatively-correlated-with-human-melanoma-progression
#4
Carlos I Rodríguez, Edgardo Castro-Pérez, B Jack Longley, Vijayasaradhi Setaluri
Melanocyte development and differentiation are regulated by cAMP, which is produced by the adenylate cyclase (AC) enzyme upon activation of the melanocortin-1-receptor (MC1R). Individuals carrying single amino acid substitution variants of MC1R have impaired cAMP signaling and higher risk of melanoma. However, the contribution of AC to this risk is not clear. Downstream of AC, the phosphorylated transcription factor, cyclic AMP Responsive Element Binding Protein (pCREB), which is activated by protein kinase A, regulates the expression of several genes including the melanocyte master regulator MITF...
November 24, 2017: Cancer Letters
https://www.readbyqxmd.com/read/29171181/regulation-of-cell-proliferation-in-the-retinal-pigment-epithelium-differential-regulation-of-the-death-associated-protein-like-1-dapl1-by-alternative-mitf-splice-forms
#5
Xiaoyin Ma, Jiajia Hua, Guoxiao Zheng, Fang Li, Chunbao Rao, Huirong Li, Jing Wang, Li Pan, Ling Hou
Vertebrate eye development and homoeostasis critically depend on the regulation of proliferation of cells forming the retinal pigment epithelium (RPE). Previous results indicated that the death associated protein like-1 DAPL1 cell-autonomously suppresses RPE proliferation in vivo and in vitro. Here we show in human RPE cell lines that the pigment cell transcription factor MITF regulates RPE cell proliferation by upregulating DAPL1 expression. DAPL1 regulation by MITF is, however, mediated predominantly by (-) MITF, one of two alternative splice isoforms of MITF that lacks six residues located upstream of the DNA binding basic domain...
November 24, 2017: Pigment Cell & Melanoma Research
https://www.readbyqxmd.com/read/29161152/proliferative-cells-isolated-from-the-adult-human-peripheral-retina-only-transiently-upregulate-key-retinal-markers-upon-induced-differentiation
#6
Erik O Johnsen, Rebecca C Frøen, Ole Kristoffer Olstad, Bjørn Nicolaissen, Goran Petrovski, Morten C Moe, Agate Noer
Purpose/Aim: The adult human retina has limited regenerative potential, and severe injury will result in permanent damage. Lower vertebrates handle retinal injury by activating neural stem cells (NSCs) in the ciliary marginal zone (CMZ). Müller glia-like cells expressing markers of NSCs are also present in the peripheral retina (PR) of the adult human eye, leading to the hypothesis that a CMZ-like zone might exists also in humans. In order to shed further light on this hypothesis we investigated the in vitro differentiation potential of proliferative cells isolated from the adult human PR towards a retinal phenotype...
November 21, 2017: Current Eye Research
https://www.readbyqxmd.com/read/29158168/identification-and-functional-analysis-of-a-novel-mutation-in-the-pax3-gene-associated-with-waardenburg-syndrome-type-i
#7
Zhijie Niu, Jiada Li, Fen Tang, Jie Sun, Xueping Wang, Lu Jiang, Lingyun Mei, Hongsheng Chen, Yalan Liu, Xinzhang Cai, Yong Feng, Chufeng He
Waardenburg syndrome type 1 (WS1) is a rare autosomal dominant genetic disorder of neural crest cells (NCC) characterized by congenital sensorineural hearing loss, dystopia canthorum, and abnormal iris pigmentation. WS1 is due to loss-of-function mutations in paired box gene 3 (PAX3). Here, we identified a novel PAX3 mutation (c.808C>G, p.R270G) in a three-generation Chinese family with WS1, and then analyzed its in vitro activities. The R270G PAX3 retained nuclear distribution and normal DNA-binding ability; however, it failed to activate MITF promoter, suggesting that haploinsufficiency may be the underlying mechanism for the mild WS1 phenotype of the study family...
November 17, 2017: Gene
https://www.readbyqxmd.com/read/29156734/pax3d-mrna-over-2-76-copies-%C3%A2%C2%B5l-in-the-bloodstream-predicts-cutaneous-malignant-melanoma-relapse
#8
Chiara Autilio, Carmela Paolillo, Maria Michela Lavieri, Krizia Pocino, Elisa De Paolis, Enrico Di Stasio, Paolo Marchetti, Cappellini Antonini Gian Carlo, Ettore Capoluongo
Objective: The aim of this study was to evaluate if our molecular algorithm, based on tumor circulating transcripts, may predict relapse risk in cutaneous malignant melanoma (CMM). Results: The multi-marker panel was able to differentiate patients with CMM from HC with high diagnostic sensitivity and specificity, especially for MITF-m and TGFB2 (91-100%) whose levels decreased during follow-up of recurrence-free patients, and remained stable in the case of relapse...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29148086/novel-gene-fusion-of-prcc-mitf-defines-a-new-member-of-mit-family-translocation-renal-cell-carcinoma-clinicopathologic-analysis-and-detection-of-the-gene-fusion-by-rna-sequencing-and-fish
#9
Qiu-Yuan Xia, Xiao-Tong Wang, Sheng-Bing Ye, Xuan Wang, Rui Li, Shan-Shan Shi, Ru Fang, Ru-Song Zhang, Heng-Hui Ma, Zhen-Feng Lu, Qin Shen, Wei Bao, Xiao-Jun Zhou, Qiu Rao
AIMS: MITF, TFE3, TFEB and TFEC belong to the same microphthalmia-associated transcription factor family (MiT). Two transcription factors in this family have been identified in two unusual types of renal cell carcinoma (RCC): Xp11 translocation RCC harboring TFE3 gene fusions and t(6;11) RCC harboring a MALAT1-TFEB gene fusion. The 2016 World Health Organization classification of renal neoplasia grouped these two neoplasms together under the category of MiT family translocation RCC. RCCs associated with the other two MiT family members, MITF and TFEC, have rarely been reported...
November 17, 2017: Histopathology
https://www.readbyqxmd.com/read/29145845/network-pharmacological-mechanisms-of-vernonia-anthelmintica-l-in-the-treatment-of-vitiligo-isorhamnetin-induction-of-melanogenesis-via-up-regulation-of-melanin-biosynthetic-genes
#10
Ji Ye Wang, Hong Chen, Yin Yin Wang, Xiao Qin Wang, Han Ying Chen, Mei Zhang, Yun Tang, Bo Zhang
BACKGROUND: Vitiligo is a long-term skin disease characterized by the loss of pigment in the skin. The current therapeutic approaches are limited. Although the anti-vitiligo mechanisms of Vernonia anthelmintica (L.) remain ambiguous, the herb has been broadly used in Uyghur hospitals to treat vitiligo. The overall objective of the present study aims to identify the potential lead compounds from Vernonia anthelmintica (L.) in the treatment of vitiligo via an oral route as well as the melanogenic mechanisms in the systematic approaches in silico of admetSAR and substructure-drug-target network-based inference (SDTNBI)...
November 16, 2017: BMC Systems Biology
https://www.readbyqxmd.com/read/29144597/melanogenesis-inhibitory-and-cytotoxic-activities-of-chemical-constituents-from-the-leaves-of-sauropus-androgynus-l-merr-euphorbiaceae
#11
Jie Zhang, Wan-Fang Zhu, Wei-Yuan Zhu, Pan Pan Yang, Jian Xu, Jiradej Manosroi, Takashi Kikuchi, Masahiko Abe, Toshihiro Akihisa, Feng Feng
A new steroid, 20-hydroxyisofucosterol (stigmasta-5,24(28)-diene-3β,20β-diol) (7), along with six known compounds 1 - 6 were isolated from the MeOH extract of the leaves of Sauropus androgynus L. Merr. (Euphorbiaceae). The structure of new steroid was determined by HR-APCI-MS and various NMR techniques in combination with literature data. Subsequently, their anti-inflammatory, cytotoxic activities against five human cell lines, as well as inhibitory activities against the α-MSH induced melanogenesis on the B16 cell line were evaluated...
November 16, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/29127151/copper-regulates-maturation-and-expression-of-an-mitf-tryptase-axis-in-mast-cells
#12
Jun Mei Hu Frisk, Lena Kjellén, Stephen G Kaler, Gunnar Pejler, Helena Öhrvik
Copper has previously been implicated in the regulation of immune responses, but the impact of this metal on mast cells is poorly understood. In this article, we address this issue and show that copper starvation of mast cells causes increased granule maturation, as indicated by higher proteoglycan content, stronger metachromatic staining, and altered ultrastructure in comparison with nontreated cells, whereas copper overload has the opposite effects. In contrast, copper status did not impact storage of histamine in mast cells, nor did alterations in copper levels affect the ability of mast cells to degranulate in response to IgER cross-linking...
November 10, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29115496/prenatal-diagnosis-and-genetic-counseling%C3%A2-for-waardenburg-syndrome-type%C3%A2-i-and-ii-in-chinese-families
#13
Li Wang, Litao Qin, Tao Li, Hongjian Liu, Lingcao Ma, Wan Li, Dong Wu, Hongdan Wang, Qiannan Guo, Liangjie Guo, Shixiu Liao
Waardenburg syndrome (WS) is an auditory‑pigmentary disorder with varying combinations of sensorineural hearing loss and abnormal pigmentation. The present study aimed to investigate the underlying molecular pathology and provide a method of prenatal diagnosis of WS in Chinese families. A total of 11 patients with WS from five unrelated Chinese families were enrolled. A thorough clinical examination was performed on all participants. Furthermore, patients with WS underwent screening for mutations in the following genes: Paired box 3 (PAX3), melanogenesis associated transcription factor (MITF), SRY‑box 10, snail family transcriptional repressor 2 and endothelin receptor type B using polymerase chain reaction sequencing...
October 25, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29104457/the-extracts-of-astragalus-membranaceus-inhibit-melanogenesis-through-the-erk-signaling-pathway
#14
Yu-Tzu Tsao, Chun-Yu Kuo, Yu-Diao Kuan, Han-Chen Lin, Li-Hsien Wu, Che-Hsin Lee
Melanin is a normal production protecting skin from environment-causing damage. Plants produce some agents in response to their environment. These agents could be applied in cosmetic production. Some Chinese herbals have immunomodulatory activities and modulate the symptoms of several diseases. Melanogenesis represents a complex group of conditions that are thought to be mediated through a complex network of regulatory processes. Previously, some studies found that the extracts of Astragalus membranaceus (PG2) regulated immunity and supported hematopoiesis...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29094203/creation-of-miniature-pig-model-of-human-waardenburg-syndrome-type-2a-by-enu-mutagenesis
#15
Tang Hai, Weiwei Guo, Jing Yao, Chunwei Cao, Ailing Luo, Meng Qi, Xianlong Wang, Xiao Wang, Jiaojiao Huang, Ying Zhang, Hongyong Zhang, Dayu Wang, Haitao Shang, Qianlong Hong, Rui Zhang, Qitao Jia, Qiantao Zheng, Guosong Qin, Yongshun Li, Tao Zhang, Weiwu Jin, Zheng-Yi Chen, Hongmei Wang, Qi Zhou, Anming Meng, Hong Wei, Shiming Yang, Jianguo Zhao
Human Waardenburg syndrome 2A (WS2A) is a dominant hearing loss (HL) syndrome caused by mutations in the microphthalmia-associated transcription factor (MITF) gene. In mouse models with MITF mutations, WS2A is transmitted in a recessive pattern, which limits the study of hearing loss (HL) pathology. In the current study, we performed ENU (ethylnitrosourea) mutagenesis that resulted in substituting a conserved lysine with a serine (p. L247S) in the DNA-binding domain of the MITF gene to generate a novel miniature pig model of WS2A...
November 1, 2017: Human Genetics
https://www.readbyqxmd.com/read/29091026/genomic-regions-controlling-shape-variation-in-the-first-upper-molar-of-the-house-mouse
#16
Luisa F Pallares, Ronan Ledevin, Sophie Pantalacci, Leslie M Turner, Eirikur Steingrimsson, Sabrina Renaud
Numerous loci of large effect have been shown to underlie phenotypic variation between species. However, loci with subtle effects are presumably more frequently involved in microevolutionary processes but have rarely been discovered. We explore the genetic basis of shape variation in the first upper molar of hybrid mice between Mus musculus musculus and M. m. domesticus. We performed the first genome-wide association study for molar shape and used 3D surface morphometrics to quantify subtle variation between individuals...
November 1, 2017: ELife
https://www.readbyqxmd.com/read/29090638/indomethacin-inhibits-melanogenesis-via-down-regulation-of-mitf-mrna-transcription
#17
Kazuomi Sato, Masahiro Takei, Ray Iyota, Yoshimasa Muraoka, Marika Nagashima, Yoshitaka Yoshimura
Non-steroidal anti-inflammatory drugs (NSAIDs) exhibit several divergent biological effects. In this study, we investigated the effect of indomethacin on melanin synthesis using B16F1 melanoma cells. Indomethacin inhibited α-melanocyte stimulating hormone (α-MSH)-enhanced melanin synthesis in a dose-dependent manner. Western blotting analysis revealed that indomethacin significantly suppressed tyrosinase and Mitf protein levels. In a luciferase reporter assay, we found that indomethacin reduced tyrosinase promoter activity...
November 1, 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/29081790/the-melim-minipig-an-original-spontaneous-model-to-explore-cutaneous-melanoma-genetic-basis
#18
REVIEW
Emmanuelle Bourneuf
Melanoma is the deadliest skin cancer and is a major public health concern with a growing incidence worldwide. As for other complex diseases, animal models are needed in order to better understand the mechanisms leading to pathology, identify potential biomarkers to be used in the clinics, and eventually molecular targets for therapeutic solutions. Cutaneous melanoma, arising from skin melanocytes, is mainly caused by environmental factors such as UV radiation; however a significant genetic component participates in the etiology of the disease...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/29065997/light-emitting-diode-585nm-photomodulation-inhibiting-melanin-synthesis-and-inducing-autophagy-in-human-melanocytes
#19
Li Chen, Zhongyi Xu, Min Jiang, Chengfeng Zhang, Xuan Wang, Leihong Xiang
BACKGROUND: Melasma is a common hyperpigmentation skin disease on face. Light-emitting diode (LED) photomodulation (585nm) is reported to be effective for the treatment of melasma. However, whether and how LED photomodulation would influence melanogenesis of human epidermal melanocytes (HEMs) is unknown. OBJECTIVE: To evaluate the effects of LED photomodulation (585nm) on melanogenesis in HEMs. METHODS: HEMs were irradiated with fluences of 0, 5, 10 and 20J/cm(2) 585nm LED light...
October 11, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/29062096/functional-role-of-cyclin-dependent-kinase-5-in-the-regulation-of-melanogenesis-and-epidermal-structure
#20
Changsheng Dong, Shanshan Yang, Ruiwen Fan, Kaiyuan Ji, Junzhen Zhang, Xuexian Liu, Shuaipeng Hu, Jianshan Xie, Yu Liu, Wenjun Gao, Haidong Wang, Jianbo Yao, George W Smith, Muren Herrid
The mammalian integumentary system plays important roles in body homeostasis, and dysfunction of melanogenesis or epidermal development may lead to a variety of skin diseases, including melanoma. Skin pigmentation in humans and coat color in fleece-producing animals are regulated by many genes. Among them, microphthalmia-associated transcription factor (MITF) and paired-box 3 (PAX3) are at the top of the cascade and regulate activities of many important melanogenic enzymes. Here, we report for the first time that cyclin-dependent kinase 5 (Cdk5) is an essential regulator of MITF and PAX3...
October 23, 2017: Scientific Reports
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