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https://www.readbyqxmd.com/read/27913932/almost-2-of-spanish-breast-cancer-families-are-associated-to-germline-pathogenic-mutations-in-the-atm-gene
#1
A Tavera-Tapia, L Pérez-Cabornero, J A Macías, M I Ceballos, G Roncador, M de la Hoya, A Barroso, V Felipe-Ponce, R Serrano-Blanch, C Hinojo, M D Miramar-Gallart, M Urioste, T Caldés, S Santillan-Garzón, J Benitez, A Osorio
PURPOSE: There is still a considerable percentage of hereditary breast and ovarian cancer (HBOC) cases not explained by BRCA1 and BRCA2 genes. In this report, next-generation sequencing (NGS) techniques were applied to identify novel variants and/or genes involved in HBOC susceptibility. METHODS: Using whole exome sequencing, we identified a novel germline mutation in the moderate-risk gene ATM (c.5441delT; p.Leu1814Trpfs*14) in a family negative for mutations in BRCA1/2 (BRCAX)...
December 2, 2016: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/27899188/familial-prostate-cancer
#2
Veda N Giri, Jennifer L Beebe-Dimmer
Prostate cancer is the most commonly diagnosed cancer among men in the United States as well as most Western countries. A significant proportion of men report having a positive family history of prostate cancer in a first-degree relative (father, brother, son), which is important in that family history is one of the only established risk factors for the disease and plays a role in decision-making for prostate cancer screening. Familial aggregation of prostate cancer is considered a surrogate marker of genetic susceptibility to developing the disease, but shared environment cannot be excluded as an explanation for clustering of cases among family members...
October 2016: Seminars in Oncology
https://www.readbyqxmd.com/read/27886673/in-silico-in-vitro-and-case-control-analyses-as-an-effective-combination-for-analyzing-brca1-and-brca2-unclassified-variants-in-a-population-based-sample
#3
Marta Rodríguez-Balada, Bàrbara Roig, Lourdes Martorell, Mireia Melé, Mònica Salvat, Elisabet Vilella, Joan Borràs, Josep Gumà
Ascertaining the clinical consequences of BRCA1 and BRCA2 variants of uncertain significance (VUS) is currently indispensable for providing effective genetic counseling and preventive actions for families with hereditary breast and ovarian cancer (HBOC). To this end, we conducted a combination of in silico prediction and cDNA splicing analyses of 13 BRCA1 and 10 BRCA2 VUS identified in our cohort as well as a case-control analysis in a population-based sample of 10 recurrent VUS. We observed consistent results between the in silico predictions and sequencing analyses for all analyzed VUS...
November 2016: Cancer Genetics
https://www.readbyqxmd.com/read/27880748/cdc-grand-rounds-family-history-and-genomics-as-tools-for-cancer-prevention-and-control
#4
Juan L Rodriguez, Cheryll C Thomas, Greta M Massetti, Debra Duquette, Lindsay Avner, John Iskander, Muin J Khoury, Lisa C Richardson
Although many efforts in cancer prevention and control have routinely focused on behavioral risk factors, such as tobacco use, or on the early detection of cancer, such as colorectal cancer screening, advances in genetic testing have created new opportunities for cancer prevention through evaluation of family history and identification of cancer-causing inherited mutations. Through the collection and evaluation of a family cancer history by a trained health care provider, patients and families at increased risk for a hereditary cancer syndrome can be identified, referred for genetic counseling and testing, and make informed decisions about options for cancer risk reduction (1)...
November 25, 2016: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/27867357/machine-perfusion-of-porcine-livers-with-oxygen-carrying-solution-results-in-reprogramming-of-dynamic-inflammation-networks
#5
David Sadowsky, Ruben Zamora, Derek Barclay, Jinling Yin, Paulo Fontes, Yoram Vodovotz
Background:Ex vivo machine perfusion (MP) can better preserve organs for transplantation. We have recently reported on the first application of an MP protocol in which liver allografts were fully oxygenated, under dual pressures and subnormothermic conditions, with a new hemoglobin-based oxygen carrier (HBOC) solution specifically developed for ex vivo utilization. In those studies, MP improved organ function post-operatively and reduced inflammation in porcine livers. Herein, we sought to refine our knowledge regarding the impact of MP by defining dynamic networks of inflammation in both tissue and perfusate...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27866793/tracking-the-dissemination-of-a-culturally-targeted-brochure-to-promote-awareness-of-hereditary-breast-and-ovarian-cancer-among-black-women
#6
Courtney Lynam Scherr, Linda Bomboka, Alison Nelson, Tuya Pal, Susan Thomas Vadaparampil
OBJECTIVE: Black women have a higher rate of BRCA1 and BRCA2 (BRCA) mutations, compared with other populations, that increases their risk for hereditary breast and ovarian cancer (HBOC). However, Black women are less likely to know about HBOC and genetic testing. Based on a request from a community advisory panel of breast cancer survivors, community leaders and healthcare providers in the Black community, our team developed a culturally targeted educational brochure to promote awareness of HBOC among Black women...
October 31, 2016: Patient Education and Counseling
https://www.readbyqxmd.com/read/27826806/uptake-of-prenatal-diagnostic-testing-for-retinoblastoma-compared-to-other-hereditary-cancer-syndromes-in-the-netherlands
#7
Charlotte J Dommering, Lidewij Henneman, Annemarie H van der Hout, Marianne A Jonker, Carli M J Tops, Ans M W van den Ouweland, Rob B van der Luijt, Arjen R Mensenkamp, Frans B L Hogervorst, Egbert J W Redeker, Christine E M de Die-Smulders, Annette C Moll, Hanne Meijers-Heijboer
Since the 1980s the genetic cause of many hereditary tumor syndromes has been elucidated. As a consequence, carriers of a deleterious mutation in these genes may opt for prenatal diagnoses (PND). We studied the uptake of prenatal diagnosis for five hereditary cancer syndromes in the Netherlands. Uptake for retinoblastoma (Rb) was compared with uptake for Von Hippel-Lindau disease (VHL), Li-Fraumeni syndrome (LFS), familial adenomatous polyposis (FAP), and hereditary breast ovarian cancer (HBOC). A questionnaire was completed by all nine DNA-diagnostic laboratories assessing the number of independent mutation-positive families identified from the start of diagnostic testing until May 2013, and the number of PNDs performed for these syndromes within these families...
November 8, 2016: Familial Cancer
https://www.readbyqxmd.com/read/27826805/why-is-cancer-genetic-counseling-underutilized-by-women-identified-as-at-risk-for-hereditary-breast-cancer-patient-perceptions-of-barriers-following-a-referral-letter
#8
Alyssa Kne, Heather Zierhut, Shari Baldinger, Karen K Swenson, Pamela Mink, Patricia McCarthy Veach, Michaela L Tsai
Family history information comprises an important tool in identifying and referring patients at risk for hereditary breast and ovarian cancer (HBOC) to cancer genetic counseling. Despite recommendations and support provided by numerous professional organizations, cancer genetic counseling services are underutilized by atrisk patients. This study aimed to: (1) determine the rate of genetic counseling utilization following a referral letter, (2) characterize factors (barriers and supports) which influenced uptake of services, and (3) identify potential strategies for increasing utilization...
November 8, 2016: Journal of Genetic Counseling
https://www.readbyqxmd.com/read/27793035/performance-of-multiplicom-s-brca-mastr-dx-kit-on-the-detection-of-brca1-and-brca2-mutations-in-fresh-frozen-ovarian-and-breast-tumor-samples
#9
Cindy Badoer, Céline Garrec, Dirk Goossens, Gillian Ellison, John Mills, Mélina Dzial, Hakim El Housni, Sarah Berwouts, Paola Concolino, Virginie Guibert-Le Guevellou, Capucine Delnatte, Jurgen Del Favero, Ettore Capoluongo, Stéphane Bézieau
Next-generation sequencing (NGS) has enabled new approaches for detection of mutations in the BRCA1 and BRCA2 genes responsible for hereditary breast and ovarian cancer (HBOC). The search for germline mutations in the BRCA1 and BRCA2 genes is of importance with respect to oncogenetic and surgical (bilateral mastectomy, ovariectomy) counselling. Testing tumor material for BRCA mutations is of increasing importance for therapeutic decision making as the poly ADP ribose polymerase (PARP) inhibitor, olaparib, is now available to treat patients with specific forms of ovarian cancer and BRCA mutations...
October 25, 2016: Oncotarget
https://www.readbyqxmd.com/read/27787946/application-of-hbocs-electrophoretic-method-to-detect-a-new-blood-substitute-derived-from-the-giant-extracellular-hemoglobin-of-lugworm
#10
A Marchand, N Crepin, I Roulland, F Semence, V Domergue, F Zal, V Polard, A Coquerel
Manipulation of blood and blood components is prohibited in sports by the World Anti-Doping Agency (WADA). This includes the use of blood substitutes to increase oxygen transport, like hemoglobin-based oxygen carriers (HBOCs), which are compounds derived from hemoglobin. Despite their medical interest, the first generation of HBOCs had serious adverse effects and was abandoned. However, new studies are now exploiting the properties of marine worm hemoglobins, which circulate as giant extracellular complexes with high oxygen-binding capacities...
October 27, 2016: Drug Testing and Analysis
https://www.readbyqxmd.com/read/27783335/brca1-allele-specific-expression-in-genetic-predisposed-breast-ovarian-cancer
#11
Estelle Jamard, Bertrand Volard, Audrey Emmanuelle Dugué, Angelina Legros, Alexandra Leconte, Bénédicte Clarisse, Grégoire Davy, Florence Polycarpe, Catherine Dugast, Caroline Abadie, Thierry Frebourg, Julie Tinat, Isabelle Tennevet, Valérie Layet, Florence Joly, Laurent Castéra, Pascaline Berthet, Dominique Vaur, Sophie Krieger
Germline allele specific expression (ASE), resulting in a lowered expression of one of the BRCA1 alleles, has been described as a possible predisposition marker in Hereditary Breast or Ovarian Cancer (HBOC), usable for molecular diagnosis in HBOC. The main objective of this prospective case-control study was to compare the proportion of ASE between controls without familial history of breast or ovarian cancer, and HBOC cases without BRCA1 or BRCA2 deleterious mutation. BRCA1 ASE evaluated on three SNPs among controls and HBOC patients without deleterious mutation were assessed by pyrosequencing...
October 25, 2016: Familial Cancer
https://www.readbyqxmd.com/read/27782108/whole-exome-sequencing-of-finnish-hereditary-breast-cancer-families
#12
Kirsi Määttä, Tommi Rantapero, Anna Lindström, Matti Nykter, Minna Kankuri-Tammilehto, Satu-Leena Laasanen, Johanna Schleutker
A remarkable proportion of factors causing genetic predisposition to breast cancer (BC) are unknown in non-BRCA1/2 families. Exome sequencing was performed for 13 high-risk Finnish hereditary breast and/or ovarian cancer (HBOC) families to detect variants contributing to BC susceptibility. After filtering, 18 candidate variants in DNA damage response (DDR) pathway genes were screened in 129 female HBOC patients, up to 989 female controls, and 31 breast tumours by Sanger sequencing/TaqMan assays. In addition, two variants were further studied in 49 male BC patients and 909 male controls...
October 26, 2016: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/27779110/the-transfer-of-multigene-panel-testing-for-hereditary-breast-and-ovarian-cancer-to-healthcare-what-are-the-implications-for-the-management-of-patients-and-families
#13
Marie Eliade, Jeremy Skrzypski, Amandine Baurand, Caroline Jacquot, Geoffrey Bertolone, Catherine Loustalot, Charles Coutant, France Guy, Pierre Fumoleau, Yannis Duffourd, Laurent Arnould, Alexandra Delignette, Marie-Martine Padéano, Côme Lepage, Géraldine Raichon-Patru, Axelle Boudrant, Marie-Christine Bône-Lépinoy, Anne-Laure Villing, Aurélie Charpin, Karine Peignaux, Sandy Chevrier, Frédérique Vegran, François Ghiringhelli, Romain Boidot, Nicolas Sevenet, Sarab Lizard, Laurence Faivre
Until recently, the molecular diagnosis of hereditary breast and ovarian cancer (HBOC) was mostly based on BRCA1/2 testing. Next generation sequencing and the recent discovery of new genes involved in HBOC now permit the transfer of genomic capture targeting multiple candidate genes from research to clinical use. However, the implications for the management of patients and their families have not been extensively studied, in particular since some of these genes are not well-established cancer predisposing genes...
October 15, 2016: Oncotarget
https://www.readbyqxmd.com/read/27769293/bracavenir-impact-of-a-psychoeducational-intervention-on-expectations-and-coping-in-young-women-aged-18-30-years-exposed-to-a-high-familial-breast-ovarian-cancer-risk-study-protocol-for-a-randomized-controlled-trial
#14
Fabrice Kwiatkowski, Pascal Dessenne, Claire Laquet, Jean-Pierre Daures, Mathilde Gay-Bellile, Yves-Jean Bignon
BACKGROUND: Young women exposed to a high hereditary breast and ovarian cancer (HBOC) risk are particularly vulnerable. They are ignored by health prevention measures but exposed to a stream of contradictory information (medicine, media, Internet). They may feel concerned about surgical prevention issues at a key moment of their identity construction (self, relationship, sexuality). We designed a special psychoeducational intervention to help these women cope better with these difficulties...
October 21, 2016: Trials
https://www.readbyqxmd.com/read/27761849/a-relational-approach-to-genetic-counseling-for-hereditary-breast-and-ovarian-cancer
#15
Rowan Forbes Shepherd, Tamara Kayali Browne, Linda Warwick
Ethical issues arise for genetic counselors when a client fails to disclose a genetic diagnosis of hereditary disease to family: they must consider the rights of the individual client to privacy and confidentiality as well as the rights of the family to know their genetic risk. Although considerable work has addressed issues of non-disclosure from the client's perspective, there is a lack of qualitative research into how genetic counselors address this issue in practice. In this study, a qualitative approach was taken to investigate whether genetic counselors in Australia use a relational approach to encourage the disclosure of genetic information from hereditary breast and ovarian cancer (HBOC) clients among family members; and if so, how they use it...
October 19, 2016: Journal of Genetic Counseling
https://www.readbyqxmd.com/read/27741520/prevalence-of-brca1-brca2-mutations-in-a-brazilian-population-sample-at-risk-for-hereditary-breast-cancer-and-characterization-of-its-genetic-ancestry
#16
Gabriela C Fernandes, Rodrigo Ad Michelli, Henrique Cr Galvão, André E Paula, Rui Pereira, Carlos E Andrade, Paula S Felicio, Cristiano P Souza, Deise Rp Mendes, Sahlua Volc, Gustavo N Berardinelli, Rebeca S Grasel, Cristina S Sabato, Danilo V Viana, Edmundo C Mauad, Cristovam Scapulatempo-Neto, Banu Arun, Rui M Reis, Edenir I Palmero
BACKGROUND: There are very few data about the mutational profile of families at-risk for hereditary breast and ovarian cancer (HBOC) from Latin America (LA) and especially from Brazil, the largest and most populated country in LA. RESULTS: Of the 349 probands analyzed, 21.5% were BRCA1/BRCA2 mutated, 65.3% at BRCA1 and 34.7% at BRCA2 gene. The mutation c.5266dupC (former 5382insC) was the most frequent alteration, representing 36.7% of the BRCA1 mutations and 24...
October 12, 2016: Oncotarget
https://www.readbyqxmd.com/read/27728906/carbon-monoxide-saturated-hemoglobin-based-oxygen-carriers-attenuate-high-altitude-induced-cardiac-injury-by-amelioration-of-the-inflammation-response-and-mitochondrial-oxidative-damage
#17
Qingshu Wang, Ling Hu, Yu Hu, Gu Gong, Hua Tan, Li Deng, Xiaoqin Sun, Xiaobo Yi, Yangyang Sun, Wei Wu, Tao Li
OBJECTIVE: To investigate the therapeutic effect of carbon monoxide (CO) on high-altitude hypoxia-induced cardiac damage. METHODS: Forty male C57BL/6 mice were randomly divided into 4 groups. The mice were exposed to normoxia or simulated 5,500-meter high-altitude hypoxia in a hypobaric chamber for 7 days. During the first 3 days, the mice were pretreated with CO-saturated hemoglobin (Hb)-based oxygen carrier (CO-HBOC), oxygen-saturated hemoglobin-based oxygen carrier (O2-HBOC) at a dose of 0...
October 12, 2016: Cardiology
https://www.readbyqxmd.com/read/27714247/strain-promoted-azide-alkyne-cycloaddition-for-protein-protein-coupling-in-the-formation-of-a-bis-hemoglobin-as-a-copper-free-oxygen-carrier
#18
Serena Singh, Ina S Dubinsky-Davidchik, Ronald Kluger
Conventional chemical approaches to protein-protein coupling present challenges due to the intrinsic competition between the desired interactions of reagents with groups of the protein as well as reactions with water. Biorthogonal Cu(i)-catalyzed azide-alkyne cycloaddition (CuAAC)-processes provide a basis to direct reactivity without functional group interference. However, the requirement for Cu(i) in CuAAC leads to complications that result from the metal ion's interactions with the protein. In principle, a similar but metal-free alternative approach to coupling could employ the reaction of an alkyne that is strained in combination with an azide (strain-promoted azide-alkyne cycloaddition, SPAAC)...
October 5, 2016: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/27696787/a-pegylated-bovine-hemoglobin-as-a-potent-hemoglobin-based-oxygen-carrier
#19
Ying Wang, Linli Wang, Weili Yu, Dawei Gao, Guoxing You, Penglong Li, Shan Zhang, Jun Zhang, Tao Hu, Lian Zhao, Hong Zhou
Hemoglobin (Hb)-based oxygen carriers (HBOCs) have been used as blood substitutes in surgery medicine and oxygen therapeutics for ischemic stroke. As a potent HBOC, the PEGylated Hb has received much attention for its oxygen delivery and plasma expanding ability. Two PEGylated Hbs, Euro-Hb and MP4 have been developed for clinical trials, using human adult hemoglobin (HbA) as the original substrate. However, HbA was obtained from outdated human blood and its quantity available from this source may not be sufficient for mass production of PEGylated HbA...
October 3, 2016: Biotechnology Progress
https://www.readbyqxmd.com/read/27679789/hemoglobin-based-oxygen-carrier-for-traumatic-hemorrhagic-shock-treatment-in-a-jehovah-s-witness
#20
Joseph A Posluszny, Lena M Napolitano
INTRODUCTION: Treatment of severe hemorrhagic shock due to acute blood loss from traumatic injuries in a Jehovah's witness (JW) trauma patient is very challenging since hemostatic blood product resuscitation is limited by refusal of the transfusion of allogeneic blood products. CASE PRESENTATION: We describe a multifaceted approach to the clinical care of a severely anemic JW trauma patient including the early administration of a bovine hemoglobin-based oxygen carrier (HBOC) as a bridge to resolution of critical anemia (nadir hemoglobin 3...
June 2016: Archives of Trauma Research
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