A cluster of mutations in neurofibromatosis is important risk factor for severe symptoms

(University of Alabama at Birmingham) Research led by Ludwine Messiaen shows that missense mutations in a cluster of just five codons in the NF1 gene are an important risk factor for severe symptoms of the genetic disease neurofibromatosis type 1. Such information is vital to help guide clinical management and genetic counseling in this complex disease, and it shows a potential need for increased disease surveillance of patients with missense mutations in that cluster -- specifically, codons 844 to 848.
Source: EurekAlert! - Cancer - Category: Cancer & Oncology Source Type: news

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Abstract Monacolin K (MK) is the principal active substance in Monascus-fermentation products (e.g. red yeast rice). MK is effective in reducing cholesterol levels in humans and has been widely used as a lipid-lowering drug. The mechanism for this is through a high degree of competitive inhibition of the rate-limiting enzyme HMG-CoA reductase (HMGR) in the cholesterol synthesis pathway. In addition to lowering blood lipid levels, MK also prevents colon cancer, acute myeloid leukemia and neurological disorders such as Parkinson's disease and type I neurofibromatosis. The aim of this manuscript is to comprehensively...
Source: Food and Chemical Toxicology - Category: Food Science Authors: Tags: Food Chem Toxicol Source Type: research
Raymond H. Kim Neurofibromatosis Type I (NF1) is caused by variants in neurofibromin (NF1). NF1 predisposes to a variety of benign and malignant tumor types, including breast cancer. Women with NF1 <50 years of age possess an up to five-fold increased risk of developing breast cancer compared with the general population. Impaired emotional functioning is reported as a comorbidity that may influence the participation of NF1 patients in regular clinical surveillance despite their increased risk of breast and other cancers. Despite emphasis on breast cancer surveillance in women with NF1, the uptake and feasibil...
Source: Cancers - Category: Cancer & Oncology Authors: Tags: Article Source Type: research
Conclusions: Focal increased FDG metabolic activity in the parotid gland require further investigation especially in the head and neck malignancy or if the results may change treatment plan as many will have unexpected metastasis.
Source: Journal of Nuclear Medicine - Category: Nuclear Medicine Authors: Tags: Other Solid Tumors Posters Source Type: research
Abstract Merlin/NF2 is a bona fide tumor suppressor whose mutations underlie inherited tumor syndrome neurofibromatosis type 2 (NF2), as well as various sporadic cancers including kidney cancer. Multiple Merlin/NF2 effector pathways including the Hippo-YAP/TAZ pathway have been identified. However, the molecular mechanisms underpinning the growth and survival of NF2-mutant tumors remain poorly understood. Using an inducible orthotopic kidney tumor model, we demonstrate that YAP/TAZ silencing is sufficient to induce regression of pre-established NF2-deficient tumors. Mechanistically, YAP/TAZ depletion diminishes gl...
Source: Developmental Cell - Category: Cytology Authors: Tags: Dev Cell Source Type: research
Contributors : Shannon M White ; Chunling YiSeries Type : Expression profiling by arrayOrganism : Homo sapiensThe NF2 gene, which encodes the Merlin protein, is a bona fide tumor suppressor whose mutations underlie inherited tumor syndrome Neurofibromatosis Type 2 (NF2). Recent large-scale genome sequencing studies have also identified NF2 as one of the most frequently mutated genes in VHL-wild-type kidney cancers. Even though a wide array of downstream signaling pathways has been described for Merlin/NF2, the molecular mechanisms underpinning the growth and survival of NF2 mutant tumors remain poorly understood. Using an ...
Source: GEO: Gene Expression Omnibus - Category: Genetics & Stem Cells Tags: Expression profiling by array Homo sapiens Source Type: research
This study ...
Source: Journal of Experimental and Clinical Cancer Research - Category: Cancer & Oncology Authors: Tags: Research Source Type: research
Neurofibromatosis type 1 (NF1) is an autosomal dominant genetic disorder. Patients with NF1 have mono-allelic loss of the tumor suppressor gene NF1 in their germline, which predisposes them to develop a wide array of benign lesions. Intriguingly, recent sequencing efforts revealed that the NF1 gene is frequently mutated in multiple malignant tumors not typically associated with NF1 patients, suggesting that NF1 heterozygosity is refractory to at least some cancer types. In two orthogonal mouse models representing tumors associated with NF1 (neurofibroma and malignant peripheral nerve sheath tumor) and non-NF1-related tumor...
Source: Journal of Investigative Dermatology - Category: Dermatology Authors: Tags: Genetic Disease, Gene Regulation, and Gene Therapy Source Type: research
Conclusion In Table 1, an overview is presented of the complex roles of AAs described in this review regarding the microbiome-gut-immune-brain axis in ASD. Besides behavioral deficits, people with ASD are characterized by systemic inflammation, gastrointestinal immune-related disturbances and changes in the gut microbiota composition. Moreover, differences in levels of specific AAs in various body compartments, including the intestinal tract, blood, urine and brain have been reported in patients with ASD, as well as in rodent models for ASD. This review described that specific AAs can modulate the intestinal epithelial im...
Source: Frontiers in Endocrinology - Category: Endocrinology Source Type: research
Abstract Background: Neurofibromatosis type 1 (NF1) is a cancer predisposing syndrome. Studies suggest that women
Source: Clinical Breast Cancer - Category: Cancer & Oncology Authors: Tags: Hered Cancer Clin Pract Source Type: research
Novel Contribution of Secreted Amyloid-β Precursor Protein to White Matter Brain Enlargement in Autism Spectrum Disorder Deborah K. Sokol1, Bryan Maloney2, Cara J. Westmark3 and Debomoy K. Lahiri2,4* 1Pediatrics Section, Department of Neurology, Indiana University School of Medicine, Indianapolis, IN, United States2Indiana Alzheimers Disease Center, Department of Psychiatry, Stark Neuroscience Research Institute, Indiana University School of Medicine, Indianapolis, IN, United States3Department of Neurology, University of Wisconsin, Madison, WI, United States4Department of Medical and Molecular Genetics, Indiana Un...
Source: Frontiers in Psychiatry - Category: Psychiatry Source Type: research
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