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https://www.readbyqxmd.com/read/27915139/impairment-of-fetal-hematopoietic-stem-cell-function-in-the-absence-of-fancd2
#1
Sakiko Suzuki, Ronny R Racine, Nathan A Manalo, Sharon B Cantor, Glen D Raffel
Fanconi Anemia (FA), results from mutations in genes necessary for DNA damage repair and often leads to progressive bone marrow failure. Although the exhaustion of the bone marrow leads to cytopenias in FA patients as they age, evidence from human FA and mouse model fetal livers suggests hematopoietic defects originate in utero which may lead to deficient seeding of the bone marrow. To address this possibility, we examined the consequences of loss of Fancd2, a central component of the FA pathway. Examination of E14...
November 30, 2016: Experimental Hematology
https://www.readbyqxmd.com/read/27913467/transplantation-for-bone-marrow-failure-current-issues
#2
Régis Peffault de Latour
The preferred treatment of idiopathic aplastic anemia (AA) is allogeneic hematopoietic stem cell transplantation (HSCT) from a human leukocyte antigen (HLA)-identical sibling donor. Transplantation from a well-matched unrelated donor (MUD) may be considered for patients without a sibling donor after failure of immunosuppressive therapy, as may alternative transplantation (mismatched, cord blood or haplo-identical HSCT) for patients without a MUD. HSCT may also be contemplated for congenital disorders in cases of pancytopenia or severe isolated cytopenia...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27904113/fanconi-syndrome-associated-with-hyponatremia-in-two-patients-with-legionella-pneumonia
#3
Akihiro Ryuge, Yasuhiko Ito, Taishi Yamakawa, Hitoshi Tanaka, Hirotoshi Yasui, Shuko Mashimo, Kenshi Watanabe, Rie Nomura, Nobukazu Suganuma, Shoichi Maruyama
Legionella pneumophila is a cause of community-acquired pneumonia that is reported to induce electrolyte disorders, including hyponatremia, hypokalemia, and hypophosphatemia. We herein report two Japanese men with Legionella pneumonia and hyponatremia and hypophosphatemia. These findings were associated with an elevation of urinary low-molecular-weight tubular protein, including urinary β2-microglobulin, N-acetyl-β-D-glucosaminidase, the fractional excretion of phosphate and uric acid, and the presence of glycosuria and panaminoaciduria, suggesting that their electrolyte disorders had been caused by Fanconi syndrome...
2016: Internal Medicine
https://www.readbyqxmd.com/read/27889724/phenotype-of-dent-disease-in-a-cohort-of-indian-children
#4
Swati Bhardwaj, Ranjeet Thergaonkar, Aditi Sinha, Pankaj Hari, Cheong Hi, Arvind Bagga
OBJECTIVE: To describe the clinical and genotypic features of Dent disease in children diagnosed at our center over a period of 10 years. DESIGN: Case series. SETTING: Pediatric Nephrology Clinic at a referral center in Northern India. METHODS: The medical records of patients with Dent disease diagnosed and followed up at this hospital from June 2005 to April 2015 were reviewed. The diagnosis of Dent disease was based on presence of all three of the following: (i) low molecular weight proteinuria, (ii) hypercalciuria and (iii) one of the following: nephrolithiasis, hematuria, hypophosphatemia or renal insufficiency, with or without mutation in CLCN5 or OCRL1 genes...
November 15, 2016: Indian Pediatrics
https://www.readbyqxmd.com/read/27884173/revisiting-the-morbid-genome-of-mendelian-disorders
#5
Mohamed Abouelhoda, Tariq Faquih, Mohamed El-Kalioby, Fowzan S Alkuraya
BACKGROUND: The pathogenicity of many Mendelian variants has been challenged by large-scale sequencing efforts. However, many rare and benign "disease mutations" are difficult to analyze due to their rarity. The Saudi Arabian variome is enriched for homozygosity due to inbreeding, a key advantage that can be exploited for the critical examination of previously published variants. RESULTS: We collated all "disease-related mutations" listed in the Human Gene Mutation Database (HGMD) and ClinVar, including "variants of uncertain significance" (VOUS)...
November 24, 2016: Genome Biology
https://www.readbyqxmd.com/read/27883081/v-d-j-recombination-process-and-the-pre-b-to-immature-b-cells-transition-are-altered-in-fanca-mice
#6
Thuy Vy Nguyen, Patrycja Pawlikowska, Virginie Firlej, Filippo Rosselli, Saïd Aoufouchi
B-lymphocytes in the bone marrow (BM) must generate a functional B-cell receptor and overcome the negative selection induced by reactivity with autoantigens. Two rounds of DNA recombination are required for the production of functional immunoglobulin heavy (Ig-HCs) and light (LCs) chains necessary for the continuation of B-lymphocyte development in the BM. Both rounds depend on the joint action of recombination activating gene-1 (RAG-1) and RAG-2 endonucleases with the DNA non-homologous end-joining pathway...
November 24, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27872734/allogeneic-hematopoietic-stem-cell-transplantation-for-adult-patients-with-fanconi-anemia
#7
Hosein Kamranzadeh Fumani, Mohammad Zokaasadi, Amir Kasaeian, Kamran Alimoghaddam, Asadollah Mousavi, Babak Bahar, Mohammad Vaezi, Ardeshir Ghavamzadeh
BACKGROUND AND OBJECTIVES: Fanconi anemia (FA) is a rare genetic disorder caused by an impaired DNA repair mechanism which leads to an increased tendency toward malignancies and progressive bone marrow failure. The only curative management available for hematologic abnormalities in FA patients is hematopoietic stem cell transplantation (HSCT). This study aimed to report the results of HSCT in adult or adolescent FA patients. PATIENTS AND METHODS: Twenty FA patients with ages of 16 or more who underwent HSCT between 2002 and 2015 enrolled in this study...
2016: Mediterranean Journal of Hematology and Infectious Diseases
https://www.readbyqxmd.com/read/27869810/hematopoietic-stem-cell-transplantation-in-fancj-brip1-fanconi-anemia
#8
A Alsultan, M Essa, R Alsudairy
No abstract text is available yet for this article.
November 21, 2016: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/27868057/tgf-%C3%AE-a-master-regulator-of-the-bone-marrow-failure-puzzle-in-fanconi-anemia
#9
EDITORIAL
Paula Río, Juan A Bueren
No abstract text is available yet for this article.
2016: Stem Cell Investigation
https://www.readbyqxmd.com/read/27867521/exome-first-approach-identified-a-novel-gloss-deletion-associated-with-lowe-syndrome
#10
Miki Watanabe, Ryuji Nakagawa, Tomohiro Kohmoto, Takuya Naruto, Ken-Ichi Suga, Aya Goji, Hideaki Horikawa, Kiyoshi Masuda, Shoji Kagami, Issei Imoto
Lowe syndrome (LS) is an X-linked disorder affecting the eyes, nervous system and kidneys, typically caused by missense or nonsense/frameshift OCRL mutations. We report a 6-month-old male clinically suspected to have LS, but without the Fanconi-type renal dysfunction. Using a targeted-exome sequencing-first approach, LS was diagnosed by the identification of a deletion involving 1.7 Mb at Xq25-q26.1, encompassing the entire OCRL gene and neighboring loci.
2016: Human Genome Variation
https://www.readbyqxmd.com/read/27867017/genomic-amplification-of-fanconi-anemia-complementation-group-a-fanca-in-head-and-neck-squamous-cell-carcinoma-hnscc-cellular-mechanisms-of-radioresistance-and-clinical-relevance
#11
Julia Hess, Kristian Unger, Michael Orth, Ulrike Schötz, Lars Schüttrumpf, Verena Zangen, Igor Gimenez-Aznar, Agata Michna, Ludmila Schneider, Ramona Stamp, Martin Selmansberger, Herbert Braselmann, Ludwig Hieber, Guido A Drexler, Sebastian Kuger, Diana Klein, Verena Jendrossek, Anna A Friedl, Claus Belka, Horst Zitzelsberger, Kirsten Lauber
Radio (chemo) therapy is a crucial treatment modality for head and neck squamous cell carcinoma (HNSCC), but relapse is frequent, and the underlying mechanisms remain largely elusive. Therefore, novel biomarkers are urgently needed. Previously, we identified gains on 16q23-24 to be associated with amplification of the Fanconi anemia A (FancA) gene and to correlate with reduced progression-free survival after radiotherapy. Here, we analyzed the effects of FancA on radiation sensitivity in vitro, characterized the underlying mechanisms, and evaluated their clinical relevance...
November 17, 2016: Cancer Letters
https://www.readbyqxmd.com/read/27866471/distal-renal-tubular-acidosis-without-renal-impairment-after-use-of-tenofovir-a-case-report
#12
Kentaro Iwata, Manabu Nagata, Shuhei Watanabe, Shinichi Nishi
BACKGROUND: Tenofovir, one of antiretroviral medication to treat human immunodeficiency virus (HIV) infection, is known to cause proximal renal tubular acidosis such as Fanconi syndrome, but cases of distal renal tubular acidosis had never been reported. CASE PRESENTATION: A 20-year-old man with HIV infection developed nausea and vomiting without diarrhea after starting antiretroviral therapy. Arterial blood gas revealed non-anion-gap metabolic acidosis and urine test showed positive urine anion gap...
November 21, 2016: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/27865213/phenotypic-correction-of-fanconi-anemia-cells-in-the-murine-bone-marrow-after-carrier-cell-mediated-delivery-of-lentiviral-vector
#13
Santhosh Chakkaramakkil Verghese, Natalya A Goloviznina, Peter Kurre
Fanconi anemia (FA) is an autosomal-recessive disorder associated with hematopoietic failure and it is a candidate for hematopoietic stem cell (HSC)-directed gene therapy. However, the characteristically reduced HSC numbers found in FA patients, their ineffective mobilization from the marrow, and re-oxygenation damage during ex vivo manipulation have precluded clinical success using conventional in vitro approaches. We previously demonstrated that lentiviral vector (LV) particles reversibly attach to the cell surface where they gain protection from serum complement neutralization...
November 19, 2016: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/27858211/factors-influencing-the-decision-making-process-and-long-term-interpersonal-outcomes-for-parents-who-undergo-preimplantation-genetic-diagnosis-for-fanconi-anemia-a-qualitative-investigation
#14
K Haude, P McCarthy Veach, B LeRoy, H Zierhut
Fanconi anemia (FA) is characterized by congenital malformations, progressive bone marrow failure, and predisposition to malignancy. Hematopoietic stem cell transplantation is used to treat FA, and best results are attained with sibling donors who are human leukocyte antigen (HLA) identical matches. Preimplantation genetic diagnosis (PGD) offers parents of an affected child the opportunity to have an unaffected child who is an HLA match. While some research has investigated parents' experiences during the PGD process, no published studies specifically address factors influencing their decision-making process and long-term interpersonal outcomes...
November 17, 2016: Journal of Genetic Counseling
https://www.readbyqxmd.com/read/27843372/wissler-fanconi-syndrome-and-related-diagnoses-a-case-report
#15
Mustafa Q Albustani, Robert F Howard
INTRODUCTION: Wissler-Fanconi syndrome is a rare rheumatic syndrome that was first described during the 1940s in Europe. Since then, many papers have been written that cover all aspects of this syndrome, most of which are in French and German language, with only a very few in English (none of them recent). We report here a case that fulfils the criteria for Wissler-Fanconi syndrome. Under the more general descriptive umbrella of Wissler-Fanconi syndrome, our patient also fulfils the Modified Jones criteria, and the 2010 American College of Rheumatology/European League Against Rheumatism (ACR/EULAR) classification criteria for rheumatoid arthritis, and was interpreted by other internists and another rheumatologist as fulfilling the Yamaguchi criteria for adult onset Still's disease...
2016: Open Access Rheumatol
https://www.readbyqxmd.com/read/27834954/strong-antitumor-synergy-between-dna-crosslinking-and-hsp90-inhibition-causes-massive-premitotic-dna-fragmentation-in-ovarian-cancer-cells
#16
Daniela Kramer, Nadine Stark, Ramona Schulz-Heddergott, Norman Erytch, Shelley Edmunds, Laura Roßmann, Holger Bastians, Nicole Concin, Ute M Moll, Matthias Dobbelstein
All current regimens for treating ovarian cancer center around carboplatin as standard first line. The HSP90 inhibitor ganetespib is currently being assessed in advanced clinical oncology trials. Thus, we tested the combined effects of ganetespib and carboplatin on a panel of 15 human ovarian cancer lines. Strikingly, the two drugs strongly synergized in cytotoxicity in tumor cells lacking wild-type p53. Mechanistically, ganetespib and carboplatin in combination, but not individually, induced persistent DNA damage causing massive global chromosome fragmentation...
November 11, 2016: Cell Death and Differentiation
https://www.readbyqxmd.com/read/27832981/haploidentical-bone-marrow-transplantation-with-post-transplant-cyclophosphamide-for-children-and-adolescents-with-fanconi-anemia
#17
Carmem Bonfim, Lisandro Ribeiro, Samantha Nichele, Gisele Loth, Marco Bitencourt, Adriana Koliski, Cilmara Kuwahara, Ana Luiza Fabro, Noemi F Pereira, Daniela Pilonetto, Monica Thakar, Hans-Peter Kiem, Kristin Page, Ephraim J Fuchs, Mary Eapen, Ricardo Pasquini
We describe haploidentical bone marrow transplantation with post-transplant cyclophosphamide (PT-CY) for 30 patients with Fanconi anemia (FA). Twenty-six patients were transplanted upfront, and the preparatory regimens included fludarabine 150 mg/m(2) + total body irradiation 200 to 300 cGy ± CY 10 mg/kg without (n = 12) or with rabbit antithymocyte globulin (r-ATG) 4 to 5 mg/kg (n = 14). Four patients were rescued after primary or secondary graft failure after related or unrelated donor transplantation with the above regimen with (n = 2) or without r-ATG (n = 2)...
November 7, 2016: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/27831662/loss-of-the-tgf-%C3%AE-effector-%C3%AE-2sp-promotes-genomic-instability
#18
Jian Chen, Vivek Shukla, Patrizia Farci, Jaclyn Andricovich, Wilma Jogunoori, Lawrence N Kwong, Lior H Katz, Kirti Shetty, Asif Rashid, Xiaoping Su, Jon White, Lei Li, Alan Yaoqi Wang, Boris Blechacz, Gottumukkala S Raju, Marta Davila, Bao-Ngoc Nguyen, John R Stroehlein, Junjie Chen, Sang Soo Kim, Heather Levin, Keigo Machida, Hidekazu Tsukamoto, Peter Michaely, Alexandros Tzatsos, Lopa Mishra
Exposure to genotoxins such as ethanol-derived acetaldehyde leads to DNA damage and liver injury, and promotes the development of cancer. We report here a major role for the TGF-β/Smad3 adaptor β2-Spectrin (β2SP, gene Sptbn1) in maintaining genomic stability following alcohol-induced DNA damage. β2SP supports DNA repair through β2SP-dependent activation of Fancd2, a core component of the Fanconi anemia complex. Loss of β2SP leads to decreased Fancd2 levels and sensitizes β2SP mutants to DNA damage by ethanol treatment, leading to phenotypes that closely resemble those observed in animals lacking both Aldh2 and Fancd2, and resemble human fetal alcohol syndrome...
November 5, 2016: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/27827319/the-salivary-microbiome-and-oral-cancer-risk-a-pilot-study-in-fanconi-anemia
#19
C P Furquim, G M S Soares, L L Ribeiro, M A Azcarate-Peril, N Butz, J Roach, K Moss, C Bonfim, C C Torres-Pereira, F R F Teles
Fanconi anemia (FA) is a rare genetic disease characterized by chromosomal instability and impaired DNA damage repair. FA patients develop oral squamous cell carcinoma (OSCC) earlier and more frequently than the general population, especially after hematopoietic stem cell transplantation (HSCT). Although evidence of an etiological role of the local microbiome and carcinogenesis has been mounting, no information exists regarding the oral microbiome of FA patients. The aim of this study was to explore the salivary microbiome of 61 FA patients regarding their oral health status and OSCC risk factors...
November 8, 2016: Journal of Dental Research
https://www.readbyqxmd.com/read/27819275/the-pten-phosphatase-functions-cooperatively-with-the-fanconi-anemia-proteins-in-dna-crosslink-repair
#20
Elizabeth A Vuono, Ananda Mukherjee, David A Vierra, Morganne M Adroved, Charlotte Hodson, Andrew J Deans, Niall G Howlett
Fanconi anemia (FA) is a genetic disease characterized by bone marrow failure and increased cancer risk. The FA proteins function primarily in DNA interstrand crosslink (ICL) repair. Here, we have examined the role of the PTEN phosphatase in this process. We have established that PTEN-deficient cells, like FA cells, exhibit increased cytotoxicity, chromosome structural aberrations, and error-prone mutagenic DNA repair following exposure to ICL-inducing agents. The increased ICL sensitivity of PTEN-deficient cells is caused, in part, by elevated PLK1 kinase-mediated phosphorylation of FANCM, constitutive FANCM polyubiquitination and degradation, and the consequent inefficient assembly of the FA core complex, FANCD2, and FANCI into DNA repair foci...
November 7, 2016: Scientific Reports
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