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https://www.readbyqxmd.com/read/29151064/the-oral-cavity-potential-source-of-stem-cells
#1
Rafał Brożek, Maciej Kurpisz, Ryszard Koczorowski
The purpose of this review is to present the current knowledge regarding the hierarchy of stem cells originating from the oral cavity, which could have a potential value when applied to regenerative stomatology. It must be particularly emphasized that the heterogenous nature of its biology and function within oral compartment may predispose them to different types of applications. Stem cells can be perceived as immature, primitive and unspecialized types of cells with the ability to proliferate, self-renew and differentiate into specialized progeny according to the compartmental signaling...
October 19, 2017: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/29150909/genetic-analysis-of-osteogenesis-imperfecta-in-the-palestinian-population-molecular-screening-of-49-affected-families
#2
Osama Essawi, Sofie Symoens, Maha Fannana, Mohammad Darwish, Mohammad Farraj, Andy Willaert, Tamer Essawi, Bert Callewaert, Anne De Paepe, Fransiska Malfait, Paul J Coucke
BACKGROUND: Osteogenesis imperfecta (OI) is a heterogeneous hereditary connective tissue disorder clinically hallmarked by increased susceptibility to bone fractures. METHODS: We analyzed a cohort of 77 diagnosed OI patients from 49 unrelated Palestinian families. Next-generation sequencing technology was used to screen a panel of known OI genes. RESULTS: In 41 probands, we identified 28 different disease-causing variants of 9 different known OI genes...
November 18, 2017: Molecular Genetics & Genomic Medicine
https://www.readbyqxmd.com/read/29150834/il-22-neutralizing-autoantibodies-impair-fungal-clearance-in-murine-oropharyngeal-candidiasis-model
#3
Rudolf Bichele, Jaanika Kärner, Kai Truusalu, Imbi Smidt, Reet Mändar, Heather R Conti, Sarah L Gaffen, Pärt Peterson, Martti Laan, Kai Kisand
Protection against mucocutaneous candidiasis depends on the T helper (Th)17 pathway, as gene defects affecting its integrity result in inability to clear Candida albicans infection on body surfaces. Moreover, autoantibodies neutralizing Th17 cytokines have been related to chronic candidiasis in a rare inherited disorder called autoimmune polyendocriopathy candidiasis ectodermal dystrophy (APECED) caused by mutations in autoimmune regulator (AIRE) gene. However, the direct pathogenicity of these autoantibodies has not yet been addressed...
November 17, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/29150322/sex-ratios-of-the-tick-ixodes-arboricola-are-strongly-female-biased-but-there-are-no-indications-of-sex-distorting-bacteria
#4
A Raoul Van Oosten, Olivier Duron, Dieter J A Heylen
Studies on sex ratio are of fundamental importance for understanding the biology of populations and biological control of pests and pathogens. In most Ixodes tick species, only females feed in the adult stage and, hence, contribute to pathogen transmission. The tree-hole tick Ixodes arboricola infests cavity-nesting birds and has limited dispersal possibilities. It plays an important role in the maintenance of zoonotic disease cycles. Here, we quantified the sex ratio of 718 adult I. arboricola ticks obtained from a laboratory stock at nine distinct periods (cohorts) from 2008 to 2015...
November 11, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29150295/paternal-transmission-of-early-life-traumatization-through-epigenetics-do-fathers-play-a-role
#5
Enrique d'Harcourt Rowold, Lara Schulze, Sandra Van der Auwera, Hans Jörgen Grabe
Traumatizing events are known to have consequences for the victim which may lead to the development of several well-known mental disorders. Recent research has shown that traumatic events may affect not only the victims' lives, but also that of their progeny. It is generally accepted that this transmission of trauma occurs through parental behavior; however as has been recently discovered, the effects of trauma may also be inherited due to induced alterations in gene expression. These changes, so called epigenetic modifications, illuminate the interaction between genes and the environment...
November 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/29150126/hypertrophic-cardiomyopathy
#6
REVIEW
Juan José Santos Mateo, María Sabater Molina, Juan Ramón Gimeno Blanes
Hypertrophic cardiomyopathy is the most common inherited cardiovascular disease. It is characterized by increased ventricular wall thickness and is highly complex due to its heterogeneous clinical presentation, several phenotypes, large number of associated causal mutations and broad spectrum of complications. It is caused by mutations in sarcomeric proteins, which are identified in up to 60% of cases of the disease. Clinical manifestations of Hypertrophic Cardiomyopathy include shortness of breath, chest pain, palpitations and syncope, which are related to the onset of diastolic dysfunction, left ventricular outflow tract obstruction, ischemia, atrial fibrillation and abnormal vascular responses...
November 14, 2017: Medicina Clínica
https://www.readbyqxmd.com/read/29149870/first-case-report-of-cohen-syndrome-in-the-tunisian-population-caused-by-vps13b-mutations
#7
Imen Rejeb, Houweyda Jilani, Yasmina Elaribi, Syrine Hizem, Lamia Hila, Julia Lauer Zillahrdt, Jamel Chelly, Lamia Benjemaa
BACKGROUND: Cohen syndrome is a rare autosomal recessive developmental disorder that comprises variable clinical features counting developmental delay, pigmentary retinopathy, myopia, acquired microcephaly, truncal obesity, joint hypermobility, friendly disposition and intermittent neutropenia. VPS13B (vacuolar protein sorting 13, yeast, homologue of B) gene is the only gene responsible for Cohen Syndrome, causative mutations include nonsense, missense, indel and splice-site variants...
November 17, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/29149824/gene-therapy-and-retinal-diseases
#8
Claudio Campa, Carla Enrica Gallenga, Elena Bolletta, Paolo Perri
Background Gene therapy represents the therapeutic delivery of nucleic acid polymers into a patient's cells with the aim of treating an underlying disease. Over the past 2 decades this new therapy has made substantial progress owing to better understanding of the pathobiologic basis of various diseases coupled with growth of gene transfer biotechnologies. The eye, in particular, represents a suitable target for such therapy due to the immune privilege provided by the blood-ocular barrier, the ability to directly visualize, access and locally treat the cells and the minimal amount of vector needed given the size of this organ...
November 16, 2017: Current Gene Therapy
https://www.readbyqxmd.com/read/29149451/transcriptional-alterations-in-hereditary-and-sporadic-nonfunctioning-pancreatic-neuroendocrine-tumors-according-to-genotype
#9
Xavier M Keutgen, Suresh Kumar, Sudheer Gara, Myriem Boufraqech, Sunita Agarwal, Ralph H Hruban, Naris Nilubol, Martha Quezado, Richard Finney, Maggie Cam, Electron Kebebew
BACKGROUND: Nonfunctioning pancreatic neuroendocrine tumors (NFPanNETs) may be sporadic or inherited because of germline mutations associated with von Hippel-Lindau disease (VHL) or multiple endocrine neoplasia type 1 (MEN1). The clinical behavior of NFPanNETs is difficult to predict, even in tumors of the same stage and grade. The authors analyzed genotype-specific patterns of transcriptional messenger RNA (mRNA) levels of NFPanNETs to understand the molecular features that determine PanNET phenotype...
November 17, 2017: Cancer
https://www.readbyqxmd.com/read/29148029/an-unusual-case-of-bilateral-pigmented-maculopathy-and-anterior-segment-dysgenesis
#10
Edward Bloch, Maria Pefkianaki, Jamil Hakim
PURPOSE: Pigmentary maculopathy can occur in the context of various inherited and acquired diseases. Anterior segment dysgenesis arises due to developmental anomalies and may be associated with systemic disease, as in Rieger syndrome. CASE REPORT: A 49-year-old woman presented with longstanding reduction in vision, evidence of anterior segment dysgenesis, and multiple discrete pigmented lesions throughout the macula bilaterally. Electroretinographic findings were consistent with severe macular dysfunction...
November 8, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/29147867/population-structure-of-candida-parapsilosis-no-genetic-difference-between-french-and-urugayan-isolates-using-microsatellite-length-polymorphism
#11
Marie Desnos-Ollivier, Victoria Bórmida, Philippe Poirier, Céline Nourrisson, Dinorah Pan, Stéphane Bretagne, Andrès Puime, Françoise Dromer
Candida parapsilosis is a human commensal yeast, frequently involved in infection worldwide and especially in neonates. It is the second species responsible for bloodstream infections in Uruguay and the third species in France. We were interested in knowing whether the population structure of isolates responsible for candidemia in France and in Uruguay was different. Genotyping methods based on microsatellite length polymorphism (MLP) have been described and are especially used for investigation of local outbreaks...
November 16, 2017: Mycopathologia
https://www.readbyqxmd.com/read/29147812/geissoschizine-synthase-controls-flux-in-the-formation-of-monoterpenoid-indole-alkaloids-in-a-catharanthus-roseus-mutant
#12
Yang Qu, Antje M K Thamm, Matthew Czerwinski, Sayaka Masada, Kyung Hee Kim, Graham Jones, Ping Liang, Vincenzo De Luca
A Catharanthus roseus mutant accumulates high levels of ajmalicine at the expense of catharanthine and vindoline. The altered chemistry depends on increased expression and biochemical activities of strictosidine β-glucosidase and ajmalicine synthase activities and reduced expression and biochemical activity of geissoschizine synthase. The Madagascar periwinkle [Catharanthus roseus (L.) G. Don] is a commercially important horticultural flower species and is a valuable source for several monoterpenoid indole alkaloids (MIAs), such as the powerful antihypertensive drug ajmalicine and the antineoplastic agents, vinblastine and vincristine...
November 17, 2017: Planta
https://www.readbyqxmd.com/read/29147671/distal-22q11-2-microduplication-case-report-and-review-of-the-literature
#13
Elana Pinchefsky, Laurence Laneuville, Myriam Srour
Distal chromosome 22q11.2 microduplications are associated with a wide range of phenotypes and unclear pathogenicity. The authors report on a 3-year-old girl with global developmental delay harboring a de novo 1.24 Mb distal chromosome 22q11.2 microduplication and a paternally inherited 0.25 Mb chromosome 4p14 microduplication. The authors review clinical features of 30 reported cases of distal 22q11.2 duplications. Common features include developmental delay (93%), neuropsychiatric features (26%), and nonspecific facial dysmorphisms (74%)...
January 2017: Child neurology open
https://www.readbyqxmd.com/read/29147600/osteoglophonic-dysplasia-phenotypic-and-radiological-clues
#14
Shwetha Kuthiroly, Dhanya Yesodharan, Aneesh Ghosh, Kenneth E White, Sheela Nampoothiri
Osteoglophonic dysplasia (OD) is an extremely rare, skeletal dysplasia with an autosomal dominant mode of inheritance. Rhizomelic dwarfism, craniosynostosis, impacted teeth, hypodontia or anodontia, and multiple nonossifying bone lesions are the salient features of this condition. We report a 14-year-old girl with clinical and radiological features consistent with OD. She presented with disproportionate short stature, craniosynostosis, a prominent supraorbital ridge, delayed teeth eruption, hypodontia, and multiple nonossifying bone lesions in the femur, tibia, and fibula...
December 2017: Journal of Pediatric Genetics
https://www.readbyqxmd.com/read/29147574/generational-comparisons-f1-versus-f3-of-vinclozolin-induced-epigenetic-transgenerational-inheritance-of-sperm-differential-dna-methylation-regions-epimutations-using-medip-seq
#15
Daniel Beck, Ingrid Sadler-Riggleman, Michael K Skinner
Environmentally induced epigenetic transgenerational inheritance of disease and phenotypic variation has been shown to involve DNA methylation alterations in the germline (e.g. sperm). These differential DNA methylation regions (DMRs) are termed epimutations and in part transmit the transgenerational phenotypes. The agricultural fungicide vinclozolin exposure of a gestating female rat has previously been shown to promote transgenerational disease and epimutations in F3 generation (great-grand-offspring) animals...
July 2017: Environmental Epigenetics
https://www.readbyqxmd.com/read/29147139/insights-into-the-management-of-wilson-s-disease
#16
REVIEW
Mohmadshakil Kathawala, Gideon M Hirschfield
Wilson's disease is a rare, inherited autosomal recessive disease of copper metabolism, in which the causative gene, ATP7B, results in absent or reduced function of the ATP7B transporter important for biliary excretion of copper and incorporation of copper into caeruloplasmin. Affected patients accumulate excessive copper within the liver, brain and other tissues. A disease mainly of children, adolescents and young adults; clinical features vary from the asymptomatic state to chronic liver disease, acute liver failure, and neuropsychiatric manifestations...
November 2017: Therapeutic Advances in Gastroenterology
https://www.readbyqxmd.com/read/29146921/plastic-deformation-behaviour-of-single-crystalline-martensite-of-ti-nb-shape-memory-alloy
#17
Masaki Tahara, Nao Okano, Tomonari Inamura, Hideki Hosoda
β-Ti alloys have attracted considerable attention as new biomedical shape memory alloys. Given the critical importance of the plastic deformation in the martensite phase for the shape memory effect and superelasticity, we investigated here the plastic deformation behaviour of a single crystal of α″ (orthorhombic) martensite of Ti-27 mol%Nb shape memory alloy obtained by the stress-induced martensitic transformation of a single crystal of the parent β phase. Four operative plastic deformation modes were observed, including two dislocation slips and two twinnings...
November 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29146883/a-landscape-of-germline-mutations-in-a-cohort-of-inherited-bone-marrow-failure-patients
#18
Olivier Bluteau, Marie Sebert, Thierry Leblanc, Régis Peffault de Latour, Samuel Quentin, Elodie Lainey, Lucie Hernandez, Jean-Hugues Dalle, Flore Sicre de Fontbrune, Etienne Lengline, Raphael Itzykson, Emmanuelle Clappier, Nicolas Boissel, Naddia Vasquez, Mélanie Da Costa, Julien Masliah-Planchon, Wendy Cuccuini, Anna Raimbault, Louis De Jaegere, Lionel Adès, Pierre Fenaux, Sébastien Maury, Claudine Schmitt, Marc Muller, Carine Domenech, Nicolas Blin, Bénédicte Bruno, Isabelle Pellier, Mathilde Hunault, Stéphane Blanche, Arnaud Petit, Guy Leverger, Gérard Michel, Yves Bertrand, André Baruchel, Gérard Socié, Jean Soulier
Bone marrow failure (BMF) in children and young adults is often suspected to be inherited, but in many cases diagnosis remains uncertain. We studied a cohort of 179 patients (from 173 families) with BMF of suspected inherited origin but unresolved diagnosis after medical evaluation and Fanconi anemia exclusion. All patients had cytopenias, and 12.0% presented ≥5% bone marrow blast cells. Median age at genetic evaluation was 11 years; 20.7% of patients were aged ≤2 years and 36.9% were ≥18 years. We analyzed genomic DNA from skin fibroblasts using whole-exome sequencing, and were able to assign a causal or likely causal germline mutation in 86 patients (48...
November 16, 2017: Blood
https://www.readbyqxmd.com/read/29146703/a-perspective-on-inherited-kidney-disease-lessons-for-practicing-nephrologists
#19
EDITORIAL
Mathieu Lemaire, Rulan S Parekh
No abstract text is available yet for this article.
November 16, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/29145865/the-endonuclease-eepd1-mediates-synthetic-lethality-in-rad52-depleted-brca1-mutant-breast-cancer-cells
#20
Robert Hromas, Hyun-Suk Kim, Gurjit Sidhu, Elizabeth Williamson, Aruna Jaiswal, Taylor A Totterdale, Jocelyn Nole, Suk-Hee Lee, Jac A Nickoloff, Kimi Y Kong
BACKGROUND: Proper repair and restart of stressed replication forks requires intact homologous recombination (HR). HR at stressed replication forks can be initiated by the 5' endonuclease EEPD1, which cleaves the stalled replication fork. Inherited or acquired defects in HR, such as mutations in breast cancer susceptibility protein-1 (BRCA1) or BRCA2, predispose to cancer, including breast and ovarian cancers. In order for these HR-deficient tumor cells to proliferate, they become addicted to a bypass replication fork repair pathway mediated by radiation repair protein 52 (RAD52)...
November 16, 2017: Breast Cancer Research: BCR
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