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https://www.readbyqxmd.com/read/29791774/serotonergic-regulation-of-insulin-secretion
#1
REVIEW
Luis Rodrigo Cataldo Bascuñan, Claire Lyons, Hedvig Bennet, Isabella Artner, Malin Fex
The exact physiological role for the monoamine serotonin (5-HT) in modulation of insulin secretion is yet to be fully understood. Although the presence of this monoamine in islets of Langerhans is well established, it is only with recent advances that the complex signaling network in islets involving 5-HT is being unraveled. With more than fourteen different 5-HT receptors expressed in human islets, and receptor independent mechanisms in insulin producing β-cells, our understanding of 5-HT's regulation of insulin secretion is increasing...
May 23, 2018: Acta Physiologica
https://www.readbyqxmd.com/read/29791427/-insulinoma-found-in-patient-with-apparent-mental-disorder-a-case-report
#2
José León Chirinos-Revilla, Jenny Gabriela Fernandez-Sivincha
Pancreatic Insulinoma is a neuroendocrine tumor of the beta cells of the islets of Langerhans, has an incidence of 4 cases per 1 000 000 persons. We report the case of a 36-year-old woman with altered behavior associated with melancholy. Psychiatry describes an abnormal mental examination and diagnosed double depression; however, the patient had the Whipple triad and insulin/glucose ratio higher than 0.3. The insulinoma was localized by magnetic resonance imaging and treated with surgery. Insulinomas can mimic mental disorders, making early diagnosis difficult...
January 2018: Revista de Gastroenterología del Perú: órgano Oficial de la Sociedad de Gastroenterología del Perú
https://www.readbyqxmd.com/read/29788958/langerhans-cell-histiocytosis-at-l5-vertebra-treated-with-en-bloc-vertebral-resection-a-case-report
#3
Lunhao Chen, Zhong Chen, Yue Wang
BACKGROUND: Langerhans cell histiocytosis (LCH) in adult lumbar spine is extremely rare, and optimal treatments remain unclear. In literature, only a few cases of lumbar spine LCH were treated using surgery but en bloc vertebral resection has not been used. CASE PRESENTATION: A 50-year-old man presented with unbearable radiating pain at his right leg. Radiological studies revealed a solitary osteolytic lesion, which was moderately enhanced on contrast MR imaging and hyper-metabolic on PET/CT, at the right L5 vertebral body and arch...
May 22, 2018: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29783860/giant-juvenile-xanthogranuloma-case-report-literature-review-and-algorithm-for-classification
#4
Malika A Ladha, Richard M Haber
Juvenile xanthogranuloma (JXG) is a member of the non-Langerhans cell group of proliferative disorders of mononuclear phagocytes. JXG is a benign tumour of histiocytic cells. Classic JXG is divided into 2 main clinical subtypes: dome-shaped papules (<0.5 cm) and single/multiple nodules (<2.0 cm). A rare variant is referred to as giant; this term encompasses JXG lesions larger than 2.0 cm. In this article, we report a case of a congenital cutaneous giant JXG. In addition, we reviewed and analyzed all cases (n = 51) of giant JXG reported in the English literature...
May 1, 2018: Journal of Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/29783829/-langerhans-cell-histiocytosis-with-spontaneous-pneumothorax-as-the-first-symptom
#5
F Han, H Liu, X L Tang
No abstract text is available yet for this article.
May 2, 2018: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/29783805/-correlation-analysis-of-expression-of-hpv-l1-with-langerhans-cell-and-ki-67-index-in-cervical-intraepithelial-neoplasia
#6
L Zhang, Y M Song, D L Gao, H X Zhang, S L Li
No abstract text is available yet for this article.
May 8, 2018: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/29774135/vemurafenib-in-langerhans-cell-histiocytosis-report-of-a-pediatric-patient-and-review-of-the-literature
#7
Anne Heisig, Jan Sörensen, Stefanie-Yvonne Zimmermann, Stefan Schöning, Dirk Schwabe, Hans-Michael Kvasnicka, Raphaela Schwentner, Caroline Hutter, Thomas Lehrnbecher
Selective BRAF inhibitors such as vemurafenib have become a treatment option in patients with Langerhans cell Histiocytosis (LCH). To date, only 14 patients receiving vemurafenib for LCH have been reported. Although vemurafenib can stabilize the clinical condition of these patients, it does not seem to cure the patients, and it is unknown, when and how to stop vemurafenib treatment. We present a girl with severe multisystem LCH who responded only to vemurafenib. After 8 months of treatment, vemurafenib was tapered and replaced by prednisone and vinblastine, a strategy which has not been described to date...
April 24, 2018: Oncotarget
https://www.readbyqxmd.com/read/29773001/combined-administration-of-monosodium-glutamate-and-high-sucrose-diet-accelerates-the-induction-of-type-2-diabetes-vascular-dysfunction-and-memory-impairment-in-rats
#8
Kaja Saikrishna, Ringu Kumari, Kantamaneni Chaitanya, Subhankar Biswas, Pawan G Nayak, Jayesh Mudgal, Anoop Kishore, Krishnadas Nandakumar
In this study, we aimed to develop an experimental animal model for type 2 diabetes mellitus (T2DM) using a combination of monosodium glutamate (MSG) and high sucrose diet (HSD). Young male Wistar rats (20-30 g) were injected with MSG (2 or 4 mg/g, i.p. for 4 days). These rats were also fed an HSD, while the control group was fed a starch diet (SFD) for 150 days. Parameters assessed periodically were body weight, feed intake, blood glucose level, and oral glucose tolerance test (OGTT), lipid profile, liver and kidney function tests, skeletal muscle glucose uptake, cognitive function tests, and microvascular changes using isolated rat aorta...
2018: Journal of Environmental Pathology, Toxicology and Oncology
https://www.readbyqxmd.com/read/29768711/clinical-resistance-associated-with-a-novel-map2k1-mutation-in-a-patient-with-langerhans-cell-histiocytosis
#9
David O Azorsa, David W Lee, Daniel H Wai, Ranjan Bista, Apurvi R Patel, Eiman Aleem, Michael M Henry, Robert J Arceci
Patients with Langerhans cell histiocytosis (LCH) harbor BRAF V600E and activating mutations of MAP2K1/MEK1 in 50% and 25% of cases, respectively. We evaluated a patient with treatment-refractory LCH for mutations in the RAS-RAF-MEK-ERK pathway and identified a novel mutation in the MAP2K1 gene resulting in a p.L98_K104 > Q deletion and predicted to be auto-activating. During treatment with the MEK inhibitor trametinib, the patient's disease showed significant progression. In vitro characterization of the MAP2K1 p...
May 16, 2018: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29765943/juvenile-xanthogranuloma-in-a-pediatric-patient-with-langerhans-cell-histiocytosis
#10
Radha Ram, Marissa D Marolf, Patricia Chévez-Barrios, Honey H Herce
Purpose: To report a case of juvenile xanthogranuloma that simulated a chalazion and to discuss the association between juvenile xanthogranuloma and Langerhans cell histiocytosis. Method: Case report and review of literature. Results: A 13-year-old boy with a prior history of Langerhans cell histiocytosis was referred to our clinic for a possible chalazion. The patient had undergone treatment for Langerhans cell histiocytosis 10 years prior...
April 2018: Ocular Oncology and Pathology
https://www.readbyqxmd.com/read/29755272/langerhans-cell-histiocytosis-in-an-18-month-old-child-presenting-as-periorbital-cellulitis
#11
Andre Ali-Ridha, Seymour Brownstein, Michael O'Connor, Steve Gilberg, Tina Tang
Langerhans cell histiocytosis (LCH) is a rare multi-system disease. It presents infrequently as a childhood orbital tumor, and can mimic more common inflammatory orbital disease processes. We report the clinical, histopathological, and electron microscopic findings of orbital LCH in an 18-month-old child, along with a review of the recent literature regarding molecular pathogenetic analysis of LCH. The child presented with a two-week history of progressive left periorbital edema and redness. He was initially diagnosed and treated empirically for bacterial periorbital cellulitis, but subsequently underwent ophthalmological consultation after he failed to improve...
January 2018: Saudi Journal of Ophthalmology: Official Journal of the Saudi Ophthalmological Society
https://www.readbyqxmd.com/read/29755270/histiocytic-lesions-of-the-orbit-a-study-of-9-cases
#12
A Kaan Gündüz, Emine Temel
Purpose: To describe the clinical presentation, treatment, and outcome of patients with histiocytic lesions of the orbit. Methods: Retrospective study of 9 patients treated and followed up between October 2001 and January 2018. Results: Eight patients in our series were males and one patient was female. The mean age at presentation was 16.8 years (range, 1 to 42 years). All patients had unilateral disease. The most common presenting complaint was upper eyelid swelling in 8 of 9...
January 2018: Saudi Journal of Ophthalmology: Official Journal of the Saudi Ophthalmological Society
https://www.readbyqxmd.com/read/29754886/langerhans-cell-histiocytosis-in-children-diagnosis-differential-diagnosis-treatment-sequelae-and-standardized-follow-up
#13
REVIEW
Jolie Krooks, Milen Minkov, Angela G Weatherall
A definitive diagnosis of Langerhans cell histiocytosis (LCH) requires a combination of clinical presentation, histology, and immunohistochemistry. The inflammatory infiltrate contains various proportions of LCH cells, the disease hallmark, which are round and have characteristic "coffee-bean" cleaved nuclei and eosinophilic cytoplasm. Positive immunohistochemistry staining for CD1a and CD207 (langerin) are required for a definitive diagnosis. Isolated cutaneous disease should only be treated when symptomatic, because spontaneous resolution is common...
June 2018: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/29754885/langerhans-cell-histiocytosis-in-children-history-classification-pathobiology-clinical-manifestations-and-prognosis
#14
REVIEW
Jolie Krooks, Milen Minkov, Angela G Weatherall
Langerhans cell histiocytosis (LCH) is an inflammatory neoplasia of myeloid precursor cells driven by mutations in the mitogen-activated protein kinase pathway. When disease involves the skin, LCH most commonly presents as a seborrheic dermatitis or eczematous eruption on the scalp and trunk. Evaluation for involvement of other organ systems is essential, because 9 of 10 patients presenting with cutaneous disease also have multisystem involvement. Clinical manifestations range from isolated disease with spontaneous resolution to life-threatening multisystem disease...
June 2018: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/29751006/mirnas-are-required-for-langerhans-cell-skin-and-lung-resident-macrophage-ontogeny
#15
Yi Yao, Carly Martin, Congcong Yin, Chunyuan Guo, Zheng Dong, Li Zhou, Qing-Sheng Mi
Our study demonstrates that miRNAs serve as critical epigenetic regulators in the ontogeny of LCs and TRMs in the skin and lungs, suggesting that miRNAs may be promising targets for LC and TRM-related allergic diseases.
May 8, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29743654/expression-of-the-transcription-factor-zbtb46-distinguishes-human-histiocytic-disorders-of-classical-dendritic-cell-origin
#16
Ansuman T Satpathy, Ryanne A Brown, Ellen Gomulia, Carlos G Briseño, Maxwell R Mumbach, Zenggang Pan, Kenneth M Murphy, Yasodha Natkunam, Howard Y Chang, Jinah Kim
Distinguishing classical dendritic cells from other myeloid cell types is complicated by the shared expression of cell surface markers. ZBTB46 is a zinc finger and BTB domain-containing transcription factor, which is expressed by dendritic cells and committed dendritic cell precursors, but not by plasmacytoid dendritic cells, monocytes, macrophages, or other immune cell populations. In this study, we demonstrate that expression of ZBTB46 identifies human dendritic cell neoplasms. We examined ZBTB46 expression in a range of benign and malignant histiocytic disorders and found that ZBTB46 is able to clearly define the dendritic cell identity of many previously unclassified histiocytic disease subtypes...
May 9, 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29740396/redox-dependent-inflammation-in-islet-transplantation-rejection
#17
REVIEW
Jessie M Barra, Hubert M Tse
Type 1 diabetes is an autoimmune disease that results in the progressive destruction of insulin-producing pancreatic β-cells inside the islets of Langerhans. The loss of this vital population leaves patients with a lifelong dependency on exogenous insulin and puts them at risk for life-threatening complications. One method being investigated to help restore insulin independence in these patients is islet cell transplantation. However, challenges associated with transplant rejection and islet viability have prevented long-term β-cell function...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29737419/langerhans-cell-histiocytosis-presenting-as-crohn-s-disease-a-case-report
#18
Amelie Therrien, Zaki El Haffaf, Claire Wartelle-Bladou, Justin Côté-Daigneault, Bich N Nguyen
PURPOSE: We describe an exceptional case of Langerhans cell histiocytosis (LCH) that presented as Crohn's disease and primary sclerosing cholangitis. METHODS: The patient's clinical, endoscopic, and histologic data from the Centre Hospitalier de l'Universite de Montreal were reviewed, as well as the literature on LCH involving the digestive tract and the liver, with a focus on the similarities with Crohn's disease and primary sclerosing cholangitis. RESULTS: A 39 years-old man first presented with anal fissures and deep punctiform colonic ulcers...
May 8, 2018: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/29735403/proteins-of-the-retinoblastoma-pathway-fen1-and-mgmt-are-novel-potential-prognostic-biomarkers-in-pancreatic-adenocarcinoma
#19
Joel Isohookana, Kirsi-Maria Haapasaari, Ylermi Soini, Joni Leppänen, Peeter Karihtala
BACKGROUND: We studied the expression of some major proteins involved in cell-cycle regulation and DNA repair, the roles of which are not well known in pancreatic ductal adenocarcinoma (PDAC), but which have a significant impact on carcinogenesis of many other cancers. METHODS: We immunohistochemically assessed expression levels of the cell-cycle regulators Rb1, p16 and cyclin-dependent kinase 4 (CDK4), and the DNA repair enzymes O6-methylguanine-DNA-alkyltransferase (MGMT) and flap endonuclease-1 (FEN1) separately in malignant tissue and benign tissue from resection margins in 102 cases of PDAC...
May 1, 2018: Pathology, Research and Practice
https://www.readbyqxmd.com/read/29734357/cyclosporine-a-drug-delivery-system-for-high-risk-penetrating-keratoplasty-stabilizing-the-intraocular-immune-microenvironment
#20
Ting Zhang, Zhiyuan Li, Ting Liu, Suxia Li, Hua Gao, Chao Wei, Weiyun Shi
Cyclosporine A (CsA) is an essential medication used to prevent corneal allograft rejection. Our preliminary studies revealed that CsA drug-delivery system (DDS) was more effective in preventing high-risk corneal allograft rejection than topical CsA application. However, the impacts of CsA DDS on the intraocular immune microenvironment were not fully elucidated. In the present study, we investigated the effect of CsA DDS on the cornea allograft, aqueous humor, and iris-ciliary body using a rabbit model of high-risk penetrating keratoplasty...
2018: PloS One
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