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https://www.readbyqxmd.com/read/28817283/the-effects-of-a21g-mutation-on-transmembrane-amyloid-beta-11-40-trimer-an-in-silico-study
#1
Son Tung Ngo, Minh Tung Nguyen, Nguyen Thanh Nguyen, Van V Vu
Familial Alzheimer's disease (FAD) is passed down in family, which account for 2-3% of about 40 million AD cases worldwide. The Flemish (A21G) mutant of amyloid β (Aβ) exhibits unique properties among all hereditary mutants of FAD, including lowest aggregation rate. Recent studies showed that Aβ oligomers play key role in Alzheimer's disease (AD) pathogenesis. They could insert themselves in brain cell membrane, disrupting the membrane integrity and ion homeostasis. However, experimental studies of transmembrane Aβ oligomers have been limited due to their intrinsic heterogeneity...
August 17, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28816794/x-linked-lymphoproliferative-disease-type-1-in-a-patient-with-the-p-gly93asp-sh2d1a-gene-mutation-and-hemophagocytic-lymphohistiocytosis
#2
Raquel de la Varga-Martínez, Francisco Mora-López, Daniel García-Cuesta, M Paz Garrastazul-Sánchez, Sebastián Quintero, Carmen Rodríguez, Almudena Sampalo
Hemophagocytic lymphohistiocytosis is characterized by uncontrolled activation of the immune system that leads to systemic hyperinflammation. Lymphoproliferative syndrome linked to the X chromosome is a hereditary immunodeficiency characterized by an inability to mount an adequate immune response to an Epstein-Barr virus infection. Hemophagocytic lymphohistiocytosis is one of the main clinical features of X-linked lymphoproliferative syndrome. We report the case of a patient who presented with primary hemophagocytic lymphohistiocytosis associated with Epstein-Barr virus infection without a familial history of immunodeficiency...
August 14, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28815464/inherited-nonsyndromic-ichthyoses-an-update-on-pathophysiology-diagnosis-and-treatment
#3
REVIEW
Anders Vahlquist, Judith Fischer, Hans Törmä
Hereditary ichthyoses are due to mutations on one or both alleles of more than 30 different genes, mainly expressed in the upper epidermis. Syndromic as well as nonsyndromic forms of ichthyosis exist. Irrespective of etiology, virtually all types of ichthyosis exhibit a defective epidermal barrier that constitutes the driving force for hyperkeratosis, skin scaling, and inflammation. In nonsyndromic forms, these features are most evident in severe autosomal recessive congenital ichthyosis (ARCI) and epidermolytic ichthyosis, but to some extent also occur in the common type of non-congenital ichthyosis...
August 16, 2017: American Journal of Clinical Dermatology
https://www.readbyqxmd.com/read/28815056/hemojuvelin-regulates-the-innate-immune-response-to-peritoneal-bacterial-infection-in-mice
#4
Qian Wu, Yuanyuan Shen, Yunlong Tao, Jiayu Wei, Hao Wang, Peng An, Zhuzhen Zhang, Hong Gao, Tianhua Zhou, Fudi Wang, Junxia Min
Hereditary hemochromatosis and iron imbalance are associated with susceptibility to bacterial infection; however, the underlying mechanisms are poorly understood. Here, we performed in vivo bacterial infection screening using several mouse models of hemochromatosis, including Hfe (Hfe(-/-) ), hemojuvelin (Hjv(-/-) ), and macrophage-specific ferroportin-1 (Fpn1(fl/fl) ;LysM-Cre(+) ) knockout mice. We found that Hjv(-/-) mice, but not Hfe(-/-) or Fpn1(fl/fl) ;LysM-Cre(+) mice, are highly susceptible to peritoneal infection by both Gram-negative and Gram-positive bacteria...
2017: Cell Discovery
https://www.readbyqxmd.com/read/28814402/molecular-insights-into-the-normal-operation-regulation-and-multisystemic-roles-of-k-cl-cotransporter-3-kcc3
#5
Alexandre P Garneau, Andrée-Anne Marcoux, Rachelle Frenette-Cotton, Fabrice Mac-Way, Julie L Lavoie, Paul Isenring
Long before the molecular identity of the Na(+)-dependent K(+)-Cl(-) cotransporters was uncovered in the mid-nineties, a Na(+)-independent K(+)-Cl(-) cotransport system was also known to exist. It was initially observed in sheep and goat red blood cells where it was shown to be ouabain-insensitive and to increase in the presence of N-ethylmaleimide (NEM). After it was established between the early and mid-nineties, the expressed sequence tag (EST) databank was found to include a sequence that was highly homologous to those of the Na(+)-dependent K(+)-Cl(-) cotransporters...
August 16, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/28813711/subjects-at-risk-for-genetic-late-onset-neurological-diseases-objective-knowledge
#6
Ângela Leite, Fernanda Leite, Maria Alzira P Dinis
BACKGROUND/AIMS: This study addresses the objective knowledge about the disease of subjects at risk for 3 genetic late-onset neurological diseases (LOND): familial amyloid polyneuropathy (FAP) TTR V30M, Huntington disease (HD), and Machado-Joseph disease (MJD). METHODS: Subjects at risk for FAP, HD, and MJD submitted to genetic counseling to know their status (carrier or non-carrier) and subjects at risk for hereditary hemochromatosis (HH), the control group, completed a sociodemographic questionnaire and answered the open-ended question: "What do you know about this disease?...
August 17, 2017: Public Health Genomics
https://www.readbyqxmd.com/read/28812043/swallowing-markers-in-spinal-and-bulbar-muscular-atrophy
#7
Haruhiko Banno, Masahisa Katsuno, Keisuke Suzuki, Seiya Tanaka, Noriaki Suga, Atsushi Hashizume, Tomoo Mano, Amane Araki, Hirohisa Watanabe, Yasushi Fujimoto, Masahiko Yamamoto, Gen Sobue
OBJECTIVE: We examined the characteristics of dysphagia in spinal and bulbar muscular atrophy, a hereditary neuromuscular disease causing weakness of limb, facial, and oropharyngeal muscles via a videofluoroscopic swallowing study, and investigated the plausibility of using these outcome measures for quantitative analysis. METHODS: A videofluoroscopic swallowing study was performed on 111 consecutive patients with genetically confirmed spinal and bulbar muscular atrophy and 53 age- and sex-matched healthy controls...
August 2017: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/28811701/colorectal-cancer-in-young-adults-a-difficult-challenge
#8
EDITORIAL
Fábio Guilherme Campos
Sporadic colorectal cancer (CRC) is traditionally diagnosed after the sixth decade of life, and current recommendations for surveillance include only patients older than 50 years of age. However, an increasing incidence of CRC in patients less than 40 years of age has been reported. This occurrence has been attributed to different molecular features and low suspicion of CRC in young symptomatic individuals. When confronting young-onset CRC with older patients, issues such as biological aggressiveness, stage at diagnosis and clinical outcomes seem to differ in many aspects...
July 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28811298/the-future-surgical-advances-in-men1-therapeutic-approaches-and-management-strategies
#9
Samira Mercedes Sadowski, Guillaume Cadiot, Eric Dansin, Pierre Goudet, Frédéric Triponez
Multiple endocrine neoplasia type 1 (MEN1) is a hereditary autosomal dominant disorder associated with numerous neuroendocrine tumors (NETs). Recent advances in the management of MEN1 have led to a decrease in mortality due to excess hormones; however, they have also led to an increase in mortality from malignancy, particularly NETs. The main challenges are to localize these tumors, to select those that need therapy because of the risk of aggressive behavior, and to select the appropriate therapy associated with minimal morbidity...
August 15, 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/28810338/-clinical-features-of-hereditary-stomatocytosis-12-cases-report-and-literatures-review
#10
Y Q Shao, N Nie, J B Huang, Z D Huang, M L Ge, J Zhang, X X Li, J Shi, Y Z Zheng
No abstract text is available yet for this article.
July 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28810241/molecular-epidemiology-of-charcot-marie-tooth-disease-in-northern-ostrobothnia-finland-a-population-based-study
#11
Maria Marttila, Laura Kytövuori, Seppo Helisalmi, Mika Kallio, Marjo Laitinen, Mikko Hiltunen, Mikko Kärppä, Kari Majamaa
BACKGROUND: Charcot-Marie-Tooth (CMT) disease is the most common hereditary neuromuscular disorder with a population prevalence of 9.7-82.3/100,000. In this study, we have estimated the prevalence of CMT and its subtypes in Finland and examined the frequency of molecular etiologies. METHODS: A population-based survey included adult patients with peripheral neuropathy from the province of Northern Ostrobothnia, Finland. Secondary causes of peripheral polyneuropathy were excluded and patients with clinical and neurophysiological features pertinent with CMT were included...
August 16, 2017: Neuroepidemiology
https://www.readbyqxmd.com/read/28810087/multiple-pulmonary-arteriovenous-malformations-an-unusual-cause-of-shortness-of-breath-and-recurrent-strokes
#12
Kalyan C Potu, Shenjing Li, Shawn C Kelly, Julia A Prescott-Focht, Scott Pham
OBJECTIVE: To discuss an uncommon case of a patient with multiple pulmonary arteriovenous malformations (PAVMs) presenting with dyspnea on exertion and recurrent strokes. BACKGROUND: A 79-year-old woman with recent onset recurrent cerebrovascular accidents (CVAs) was referred to cardiology for evaluation of dyspnea on exertion. Clinical examination was unrevealing. METHODS: A transthoracic echocardiogram (TTE) with agitated saline was suggestive of an extra-cardiac shunt...
February 2017: South Dakota Medicine: the Journal of the South Dakota State Medical Association
https://www.readbyqxmd.com/read/28809446/deferasirox-for-managing-iron-overload-in-people-with-thalassaemia
#13
REVIEW
Claudia Bollig, Lisa K Schell, Gerta Rücker, Roman Allert, Edith Motschall, Charlotte M Niemeyer, Dirk Bassler, Joerg J Meerpohl
BACKGROUND: Thalassaemia is a hereditary anaemia due to ineffective erythropoiesis. In particular, people with thalassaemia major develop secondary iron overload resulting from regular red blood cell transfusions. Iron chelation therapy is needed to prevent long-term complications.Both deferoxamine and deferiprone are effective; however, a review of the effectiveness and safety of the newer oral chelator deferasirox in people with thalassaemia is needed. OBJECTIVES: To assess the effectiveness and safety of oral deferasirox in people with thalassaemia and iron overload...
August 15, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28808875/ssat-state-of-the-art-conference-current-surgical-management-of-gastric-tumors
#14
Jeffrey A Norton, Teresa Kim, Joseph Kim, Martin D McCarter, Kaitlyn J Kelly, Joyce Wong, Jason K Sicklick
INTRODUCTION: The current era of gastric surgery is marked by low morbidity and mortality rates, innovative strategies to approach resections with a minimally invasive fashion or hyperthermic intraperitoneal chemotherapy (HIPEC), as well as improved understanding of the biology of sporadic and hereditary stromal, neuroendocrine, and epithelial malignancies. METHODS: In 2017, the Society for Surgery of the Alimentary Tract convened a State-of-the-Art Conference on Current Surgical Management of Gastric Tumors with both international experts and emerging leaders in the field of gastric surgery...
August 14, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/28808569/study-and-therapeutic-progress-on-spinal-cord-perimedullary-arteriovenous-fistulas
#15
Tiefeng Ji, Yunbao Guo, Lei Shi, Jinlu Yu
Spinal cord perimedullary arteriovenous fistulas (PMAVFs) are rare and belong to type IV spinal cord arteriovenous malformations (AVMs). Little is known regarding the treatment and prognosis of spinal cord PMAVFs. In the present study the relevant literature from PubMed was reviewed, and it was found that these fistulas can occur at all ages but are more common in children. In children, most spinal cord PMAVFs are large and with high flow, begin with bleeding and are frequently associated with hereditary hemorrhagic telangiectasia...
September 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28808266/in-silico-analysis-of-glanzmann-variants-of-calf-1-domain-of-%C3%AE-iib%C3%AE-3-integrin-revealed-dynamic-allosteric-effect
#16
Matthieu Goguet, Tarun Jairaj Narwani, Rachel Petermann, Vincent Jallu, Alexandre G de Brevern
Integrin αIIbβ3 mediates platelet aggregation and thrombus formation. In a rare hereditary bleeding disorder, Glanzmann thrombasthenia (GT), αIIbβ3 expression / function are impaired. The impact of deleterious missense mutations on the complex structure remains unclear. Long independent molecular dynamics (MD) simulations were performed for 7 GT variants and reference structure of the Calf-1 domain of αIIb. Simulations were analysed using a structural alphabet to describe local protein conformations. Common and flexible regions as well as deformable zones were observed in all the structures...
August 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28807866/brca1-2-missense-mutations-and-the-value-of-in-silico-analyses
#17
Carolin E Sadowski, Daniela Kohlstedt, Cornelia Meisel, Katja Keller, Kerstin Becker, Luisa Mackenroth, Andreas Rump, Evelin Schröck, Pauline Wimberger, Karin Kast
INTRODUCTION: The clinical implications of genetic variants in BRCA1/2 in healthy and affected individuals are considerable. Variant interpretation, however, is especially challenging for missense variants. The majority of them are classified as variants of unknown clinical significance (VUS). Computational (in-silico) predictive programs are easy to access, but represent only one tool out of a wide range of complemental approaches to classify VUS. With this single-center study, we aimed to evaluate the impact of in-silico analyses in a spectrum of different BRCA1/2 missense variants...
August 11, 2017: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/28807049/oral-manifestations-dental-management-and-a-rare-homozygous-mutation-of-the-prdm12-gene-in-a-boy-with-hereditary-sensory-and-autonomic-neuropathy-type-viii-a-case-report-and-review-of-the-literature
#18
Karim Elhennawy, Seif Reda, Christian Finke, Luitgard Graul-Neumann, Paul-Georg Jost-Brinkmann, Theodosia Bartzela
BACKGROUND: Hereditary sensory and autonomic neuropathy type VIII is a rare autosomal recessive inherited disorder. Chen et al. recently identified the causative gene and characterized biallelic mutations in the PR domain-containing protein 12 gene, which plays a role in the development of pain-sensing nerve cells. Our patient's family was included in Chen and colleagues' study. We performed a literature review of the PubMed library (January 1985 to December 2016) on hereditary sensory and autonomic neuropathy type I to VIII genetic disorders and their orofacial manifestations...
August 15, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28806189/the-use-of-optical-coherence-tomography-in-neuro-ophthalmology
#19
Noel C Y Chan, Carmen K M Chan
PURPOSE OF REVIEW: In the last decade, with the advances of optical coherence tomography (OCT) technology, different imaging protocols and analysis algorithms have been introduced to maximize the potential of this diagnostic tool in the evaluation of different eye diseases. This review aims to provide an update on these additional features, with respect to the management of a diverse range of neuro-ophthalmologic conditions. RECENT FINDINGS: Macular ganglion cell complex (mGCC) analysis has been shown to be superior to peripapillary retinal nerve fiber layer (pRNFL) analysis in certain settings, such as differentiating Leber's hereditary optic neuropathy from functional visual loss; monitoring neurodegenerative diseases or multiple sclerosis; and predicting visual loss in nonarteritic ischemic optic neuropathy...
August 12, 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28805766/-results-of-a-clinical-and-genealogical-analysis-of-pedigrees-of-children-with-cerebral-palsy-in-the-population-of-rostov-region
#20
V A Tupikov, T S Kolmakova, V B Shamik, M V Tupikov, N M Churilov
AIM: To perform clinical and genealogical pedigree analysis and determine the proportion of hereditary factors in the etiopathogenesis of cerebral palsy (CP) in children in the Rostov Region. MATERIAL AND METHODS: Pedigrees and the prevalence of CP, congenital malformations and other related diseases among relatives of I, II and III degrees of kinship of 229 probands with CP were studied. RESULTS AND CONCLUSION: The family concentration of the disease was detected in 15 (6...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
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