Filter and export

Publications

959 Publications visible to you, out of a total of 959
A biomathematical model of human erythropoiesis under erythropoietin and chemotherapy administration.
HaematoSys - Systems biology of haematopoiesis and haematopoietic neoplasia

Abstract (Expand)

Anaemia is a common haematologic side effect of dose-dense multi-cycle cytotoxic polychemotherapy requiring erythrocyte transfusions or erythropoietin (EPO) administration. To simulate the effectiveness … of different EPO application schedules, we performed both modelling of erythropoiesis under chemotherapy and pharmacokinetic and dynamic modelling of EPO applications in the framework of a single comprehensive biomathematical model. For this purpose, a cell kinetic model of bone marrow erythropoiesis was developed that is based on a set of differential compartment equations describing proliferation and maturation of erythropoietic cell stages. The system is regulated by several feedback loops comprising those mediated by EPO. We added a model of EPO absorption after injection at different sites and a pharmacokinetic model of EPO derivatives to account for the effects of external EPO applications. Chemotherapy is modelled by a transient depletion of bone marrow cell stages. Unknown model parameters were determined by fitting the predictions of the model to data sets of circulating erythrocytes, haemoglobin, haematocrit, percentage of reticulocytes or EPO serum concentrations derived from the literature or cooperating clinical study groups. Parameter fittings resulted in a good agreement of model and data. Depending on site of injection and derivative (Alfa, Beta, Delta, Darbepoetin), nine groups of EPO applications were distinguished differing in either absorption kinetics or pharmacokinetics. Finally, eight different chemotherapy protocols were modelled. The model was validated on the basis of scenarios not used for parameter fitting. Simulations were performed to analyze the impact of EPO applications on the risk of anaemia during chemotherapy. We conclude that we established a model of erythropoiesis under chemotherapy that explains a large set of time series data under EPO and chemotherapy applications. It allows predictions regarding yet untested EPO schedules. Prospective clinical studies are needed to validate model predictions and to explore the feasibility and effectiveness of the proposed schedules.

Authors: S. Schirm, C. Engel, M. Loeffler, M. Scholz

Date Published: 12th Jun 2013

Publication Type: Not specified

Human Diseases: anemia

The vacuum phenomenon in intervertebral disc disease of dogs based on computed tomography images
Genetical Statistics and Systems Biology

Abstract (Expand)

OBJECTIVES\backslashr\backslashnVacuum phenomenon is suspected to be indicative of disc degeneration and subsequent herniation. The objective of this study was to assess the reliability of vacuum … phenomenon for identification of herniated discs causing neurological signs. Prevalence of vacuum phenomenon and influencing factors in dogs with disc herniation were determined.\backslashr\backslashnMETHODS\backslashr\backslashnRetrospective review of computed tomography scans from dogs with suspected disc herniation for the presence of gas within intervertebral disc space with subsequent comparison of vacuum phenomenon and herniated disc as confirmed by surgery. Subgroups were created (chondrodystrophic, non-chondrodystrophic and unknown classification) to analyse prevalence and influencing factors (age, breed and gender) for vacuum phenomenon and agreement with herniated disc.\backslashr\backslashnRESULTS\backslashr\backslashnPrevalence of vacuum phenomenon in all dogs, chondrodystrophic, non-chondrodystrophic dogs and those with unknown classification was 19·8, 14·9, 35·7 and 24·5%, respectively. Corresponding correlation rate between vacuum phenomenon and herniated disc was 64, 67, 40 and 82%. Prevalence of vacuum phenomenon was significantly higher in nonchondrodystrophic dogs (P=0·04). Age was the only factor influencing prevalence of vacuum phenomenon (P=0·04).\backslashr\backslashnCLINICAL SIGNIFICANCE\backslashr\backslashnIn dogs with intervertebral disc disease, vacuum phenomenon is a frequent but inconsistent finding. Although helpful to identify degenerated discs, it is not suitable to identify currently herniated disc with sufficient accuracy.

Authors: M. K. Müller, E. Ludewig, G. Oechtering, Markus Scholz, T. Flegel

Date Published: 1st May 2013

Publication Type: Journal article

Evaluating the performance of the breast cancer genetic risk models BOADICEA, IBIS, BRCAPRO and Claus for predicting BRCA1/2 mutation carrier probabilities: a study based on 7352 families from the German Hereditary Breast and Ovarian Cancer Consortium.
GC-HBOC - German Consortium for Hereditary Breast and Ovarian Cancer

Abstract (Expand)

BACKGROUND: Risk prediction models are widely used in clinical genetic counselling. Despite their frequent use, the genetic risk models BOADICEA, BRCAPRO, IBIS and extended Claus model (eCLAUS), used … to estimate BRCA1/2 mutation carrier probabilities, have never been comparatively evaluated in a large sample from central Europe. Additionally, a novel version of BOADICEA that incorporates tumour pathology information has not yet been validated. PATIENTS AND METHODS: Using data from 7352 German families we estimated BRCA1/2 carrier probabilities under each model and compared their discrimination and calibration. The incremental value of using pathology information in BOADICEA was assessed in a subsample of 4928 pedigrees with available data on breast tumour molecular markers oestrogen receptor, progesterone receptor and human epidermal growth factor 2. RESULTS: BRCAPRO (area under receiver operating characteristic curve (AUC)=0.80 (95% CI 0.78 to 0.81)) and BOADICEA (AUC=0.79 (0.78-0.80)), had significantly higher diagnostic accuracy than IBIS and eCLAUS (p<0.001). The AUC increased when pathology information was used in BOADICEA: AUC=0.81 (95% CI 0.80 to 0.83, p<0.001). At carrier thresholds of 10% and 15%, the net reclassification index was +3.9% and +5.4%, respectively, when pathology was included in the model. Overall, calibration was best for BOADICEA and worst for eCLAUS. With eCLAUS, twice as many mutation carriers were predicted than observed. CONCLUSIONS: Our results support the use of BRCAPRO and BOADICEA for decision making regarding genetic testing for BRCA1/2 mutations. However, model calibration has to be improved for this population. eCLAUS should not be used for estimating mutation carrier probabilities in clinical settings. Whenever possible, breast tumour molecular marker information should be taken into account.

Authors: C. Fischer, K. Kuchenbacker, C. Engel, S. Zachariae, K. Rhiem, A. Meindl, N. Rahner, N. Dikow, H. Plendl, I. Debatin, T. Grimm, D. Gadzicki, R. Flottmann, J. Horvath, E. Schrock, F. Stock, D. Schafer, I. Schwaab, C. Kartsonaki, N. Mavaddat, B. Schlegelberger, A. C. Antoniou, R. Schmutzler

Date Published: 9th Apr 2013

Publication Type: Not specified

Human Diseases: hereditary breast ovarian cancer syndrome

Multiple independent variants at the TERT locus are associated with telomere length and risks of breast and ovarian cancer
GC-HBOC - German Consortium for Hereditary Breast and Ovarian Cancer

Abstract (Expand)

TERT-locus SNPs and leukocyte telomere measures are reportedly associated with risks of multiple cancers. Using the Illumina custom genotyping array iCOGs, we analyzed \sim480 SNPs at the TERT locus … in breast (n = 103,991), ovarian (n = 39,774) and BRCA1 mutation carrier (n = 11,705) cancer cases and controls. Leukocyte telomere measurements were also available for 53,724 participants. Most associations cluster into three independent peaks. The minor allele at the peak 1 SNP rs2736108 associates with longer telomeres (P = 5.8 \times 10(-7)), lower risks for estrogen receptor (ER)-negative (P = 1.0 \times 10(-8)) and BRCA1 mutation carrier (P = 1.1 \times 10(-5)) breast cancers and altered promoter assay signal. The minor allele at the peak 2 SNP rs7705526 associates with longer telomeres (P = 2.3 \times 10(-14)), higher risk of low-malignant-potential ovarian cancer (P = 1.3 \times 10(-15)) and greater promoter activity. The minor alleles at the peak 3 SNPs rs10069690 and rs2242652 increase ER-negative (P = 1.2 \times 10(-12)) and BRCA1 mutation carrier (P = 1.6 \times 10(-14)) breast and invasive ovarian (P = 1.3 \times 10(-11)) cancer risks but not via altered telomere length. The cancer risk alleles of rs2242652 and rs10069690, respectively, increase silencing and generate a truncated TERT splice variant.

Authors: Stig E. Bojesen, Karen A. Pooley, Sharon E. Johnatty, Jonathan Beesley, Kyriaki Michailidou, Jonathan P. Tyrer, Stacey L. Edwards, Hilda A. Pickett, Howard C. Shen, Chanel E. Smart, Kristine M. Hillman, Phuong L. Mai, Kate Lawrenson, Michael D. Stutz, Yi Lu, Rod Karevan, Nicholas Woods, Rebecca L. Johnston, Juliet D. French, Xiaoqing Chen, Maren Weischer, Sune F. Nielsen, Melanie J. Maranian, Maya Ghoussaini, Shahana Ahmed, Caroline Baynes, Manjeet K. Bolla, Qin Wang, Joe Dennis, Lesley McGuffog, Daniel Barrowdale, Andrew Lee, Sue Healey, Michael Lush, Daniel C. Tessier, Daniel Vincent, Françis Bacot, Ignace Vergote, Sandrina Lambrechts, Evelyn Despierre, Harvey A. Risch, Anna González-Neira, Mary Anne Rossing, Guillermo Pita, Jennifer A. Doherty, Nuria Alvarez, Melissa C. Larson, Brooke L. Fridley, Nils Schoof, Jenny Chang-Claude, Mine S. Cicek, Julian Peto, Kimberly R. Kalli, Annegien Broeks, Sebastian M. Armasu, Marjanka K. Schmidt, Linde M. Braaf, Boris Winterhoff, Heli Nevanlinna, Gottfried E. Konecny, Diether Lambrechts, Lisa Rogmann, Pascal Guénel, Attila Teoman, Roger L. Milne, Joaquin J. Garcia, Angela Cox, Vijayalakshmi Shridhar, Barbara Burwinkel, Frederik Marme, Rebecca Hein, Elinor J. Sawyer, Christopher A. Haiman, Shan Wang-Gohrke, Irene L. Andrulis, Kirsten B. Moysich, John L. Hopper, Kunle Odunsi, Annika Lindblom, Graham G. Giles, Hermann Brenner, Jacques Simard, Galina Lurie, Peter A. Fasching, Michael E. Carney, Paolo Radice, Lynne R. Wilkens, Anthony Swerdlow, Marc T. Goodman, Hiltrud Brauch, Montserrat Garcia-Closas, Peter Hillemanns, Robert Winqvist, Matthias Dürst, Peter Devilee, Ingo Runnebaum, Anna Jakubowska, Jan Lubinski, Arto Mannermaa, Ralf Butzow, Natalia V. Bogdanova, Thilo Dörk, Liisa M. Pelttari, Wei Zheng, Arto Leminen, Hoda Anton-Culver, Clareann H. Bunker, Vessela Kristensen, Roberta B. Ness, Kenneth Muir, Robert Edwards, Alfons Meindl, Florian Heitz, Keitaro Matsuo, Andreas Du Bois, Anna H. Wu, Philipp Harter, Soo-Hwang Teo, Ira Schwaab, Xiao-Ou Shu, William Blot, Satoyo Hosono, Daehee Kang, Toru Nakanishi, Mikael Hartman, Yasushi Yatabe, Ute Hamann, Beth Y. Karlan, Suleeporn Sangrajrang, Susanne Krüger Kjaer, Valerie Gaborieau, Allan Jensen, Diana Eccles, Estrid Høgdall, Chen-Yang Shen, Judith Brown, Yin Ling Woo, Mitul Shah, Mat Adenan Noor Azmi, Robert Luben, Siti Zawiah Omar, Kamila Czene, Robert A. Vierkant, Børge G. Nordestgaard, Henrik Flyger, Celine Vachon, Janet E. Olson, Xianshu Wang, Douglas A. Levine, Anja Rudolph, Rachel Palmieri Weber, Dieter Flesch-Janys, Edwin Iversen, Stefan Nickels, Joellen M. Schildkraut, Isabel Dos Santos Silva, Daniel W. Cramer, Lorna Gibson, Kathryn L. Terry, Olivia Fletcher, Allison F. Vitonis, C. Ellen van der Schoot, Elizabeth M. Poole, Frans B. L. Hogervorst, Shelley S. Tworoger, Jianjun Liu, Elisa V. Bandera, Jingmei Li, Sara H. Olson, Keith Humphreys, Irene Orlow, Carl Blomqvist, Lorna Rodriguez-Rodriguez, Kristiina Aittomäki, Helga B. Salvesen, Taru A. Muranen, Elisabeth Wik, Barbara Brouwers, Camilla Krakstad, Els Wauters, Mari K. Halle, Hans Wildiers, Lambertus A. Kiemeney, Claire Mulot, Katja K. Aben, Pierre Laurent-Puig, Anne Mvan Altena, Thérèse Truong, Leon F. A. G. Massuger, Javier Benitez, Tanja Pejovic, Jose Ignacio Arias Perez, Maureen Hoatlin, M. Pilar Zamora, Linda S. Cook, Sabapathy P. Balasubramanian, Linda E. Kelemen, Andreas Schneeweiss, Nhu D. Le, Christof Sohn, Angela Brooks-Wilson, Ian Tomlinson, Michael J. Kerin, Nicola Miller, Cezary Cybulski, Brian E. Henderson, Janusz Menkiszak, Fredrick Schumacher, Nicolas Wentzensen, Loic Le Marchand, Hannah P. Yang, Anna Marie Mulligan, Gord Glendon, Svend Aage Engelholm, Julia A. Knight, Claus K. Høgdall, Carmel Apicella, Martin Gore, Helen Tsimiklis, Honglin Song, Melissa C. Southey, Agnes Jager, Ans M. Wvan den Ouweland, Robert Brown, John W. M. Martens, James M. Flanagan, Mieke Kriege, James Paul, Sara Margolin, Nadeem Siddiqui, Gianluca Severi, Alice S. Whittemore, Laura Baglietto, Valerie McGuire, Christa Stegmaier, Weiva Sieh, Heiko Müller, Volker Arndt, France Labrèche, Yu-Tang Gao, Mark S. Goldberg, Gong Yang, Martine Dumont, John R. McLaughlin, Arndt Hartmann, Arif B. Ekici, Matthias W. Beckmann, Catherine M. Phelan, Michael P. Lux, Jenny Permuth-Wey, Bernard Peissel, Thomas A. Sellers, Filomena Ficarazzi, Monica Barile, Argyrios Ziogas, Alan Ashworth, Aleksandra Gentry-Maharaj, Michael Jones, Susan J. Ramus, Nick Orr, Usha Menon, Celeste L. Pearce, Thomas Brüning, Malcolm C. Pike, Yon-Dschun Ko, Jolanta Lissowska, Jonine Figueroa, Jolanta Kupryjanczyk, Stephen J. Chanock, Agnieszka Dansonka-Mieszkowska, Arja Jukkola-Vuorinen, Iwona K. Rzepecka, Katri Pylkäs, Mariusz Bidzinski, Saila Kauppila, Antoinette Hollestelle, Caroline Seynaeve, Rob A. E. M. Tollenaar, Katarzyna Durda, Katarzyna Jaworska, Jaana M. Hartikainen, Veli-Matti Kosma, Vesa Kataja, Natalia N. Antonenkova, Jirong Long, Martha Shrubsole, Sandra Deming-Halverson, Artitaya Lophatananon, Pornthep Siriwanarangsan, Sarah Stewart-Brown, Nina Ditsch, Peter Lichtner, Rita K. Schmutzler, Hidemi Ito, Hiroji Iwata, Kazuo Tajima, Chiu-Chen Tseng, Daniel O. Stram, David van den Berg, Cheng Har Yip, M. Kamran Ikram, Yew-Ching Teh, Hui Cai, Wei Lu, Lisa B. Signorello, Qiuyin Cai, Dong-Young Noh, Keun-Young Yoo, Hui Miao, Philip Tsau-Choong Iau, Yik Ying Teo, James McKay, Charles Shapiro, Foluso Ademuyiwa, George Fountzilas, Chia-Ni Hsiung, Jyh-Cherng Yu, Ming-Feng Hou, Catherine S. Healey, Craig Luccarini, Susan Peock, Dominique Stoppa-Lyonnet, Paolo Peterlongo, Timothy R. Rebbeck, Marion Piedmonte, Christian F. Singer, Eitan Friedman, Mads Thomassen, Kenneth Offit, Thomas v. O. Hansen, Susan L. Neuhausen, Csilla I. Szabo, Ignacio Blanco, Judy Garber, Steven A. Narod, Jeffrey N. Weitzel, Marco Montagna, Edith Olah, Andrew K. Godwin, Drakoulis Yannoukakos, David E. Goldgar, Trinidad Caldes, Evgeny N. Imyanitov, Laima Tihomirova, Banu K. Arun, Ian Campbell, Arjen R. Mensenkamp, Christi J. van Asperen, Kees E. P. van Roozendaal, Hanne Meijers-Heijboer, J. Margriet Collée, Jan C. Oosterwijk, Maartje J. Hooning, Matti A. Rookus, Rob B. van der Luijt, Theo A. Mvan Os, D. Gareth Evans, Debra Frost, Elena Fineberg, Julian Barwell, Lisa Walker, M. John Kennedy, Radka Platte, Rosemarie Davidson, Steve D. Ellis, Trevor Cole, Brigitte Bressac-de Paillerets, Bruno Buecher, Francesca Damiola, Laurence Faivre, Marc Frenay, Olga M. Sinilnikova, Olivier Caron, Sophie Giraud, Sylvie Mazoyer, Valérie Bonadona, Virginie Caux-Moncoutier, Aleksandra Toloczko-Grabarek, Jacek Gronwald, Tomasz Byrski, Amanda B. Spurdle, Bernardo Bonanni, Daniela Zaffaroni, Giuseppe Giannini, Loris Bernard, Riccardo Dolcetti, Siranoush Manoukian, Norbert Arnold, Christoph Engel, Helmut Deissler, Kerstin Rhiem, Dieter Niederacher, Hansjoerg Plendl, Christian Sutter, Barbara Wappenschmidt, Ake Borg, Beatrice Melin, Johanna Rantala, Maria Soller, Katherine L. Nathanson, Susan M. Domchek, Gustavo C. Rodriguez, Ritu Salani, Daphne Gschwantler Kaulich, Muy-Kheng Tea, Shani Shimon Paluch, Yael Laitman, Anne-Bine Skytte, Torben A. Kruse, Uffe Birk Jensen, Mark Robson, Anne-Marie Gerdes, Bent Ejlertsen, Lenka Foretova, Sharon A. Savage, Jenny Lester, Penny Soucy, Karoline B. Kuchenbaecker, Curtis Olswold, Julie M. Cunningham, Susan Slager, Vernon S. Pankratz, Ed Dicks, Sunil R. Lakhani, Fergus J. Couch, Per Hall, Alvaro N. A. Monteiro, Simon A. Gayther, Paul D. P. Pharoah, Roger R. Reddel, Ellen L. Goode, Mark H. Greene, Douglas F. Easton, Andrew Berchuck, Antonis C. Antoniou, Georgia Chenevix-Trench, Alison M. Dunning

Date Published: 1st Apr 2013

Publication Type: Journal article

Human Diseases: hereditary breast ovarian cancer syndrome

Functional variants at the 11q13 risk locus for breast cancer regulate cyclin D1 expression through long-range enhancers
GC-HBOC - German Consortium for Hereditary Breast and Ovarian Cancer

Abstract (Expand)

Analysis of 4,405 variants in 89,050 European subjects from 41 case-control studies identified three independent association signals for estrogen-receptor-positive tumors at 11q13. The strongest signal … maps to a transcriptional enhancer element in which the G allele of the best candidate causative variant rs554219 increases risk of breast cancer, reduces both binding of ELK4 transcription factor and luciferase activity in reporter assays, and may be associated with low cyclin D1 protein levels in tumors. Another candidate variant, rs78540526, lies in the same enhancer element. Risk association signal 2, rs75915166, creates a GATA3 binding site within a silencer element. Chromatin conformation studies demonstrate that these enhancer and silencer elements interact with each other and with their likely target gene, CCND1.

Authors: Juliet D. French, Maya Ghoussaini, Stacey L. Edwards, Kerstin B. Meyer, Kyriaki Michailidou, Shahana Ahmed, Sofia Khan, Mel J. Maranian, Martin O’Reilly, Kristine M. Hillman, Joshua A. Betts, Thomas Carroll, Peter J. Bailey, Ed Dicks, Jonathan Beesley, Jonathan Tyrer, Ana-Teresa Maia, Andrew Beck, Nicholas W. Knoblauch, Constance Chen, Peter Kraft, Daniel Barnes, Anna González-Neira, M. Rosario Alonso, Daniel Herrero, Daniel C. Tessier, Daniel Vincent, Francois Bacot, Craig Luccarini, Caroline Baynes, Don Conroy, Joe Dennis, Manjeet K. Bolla, Qin Wang, John L. Hopper, Melissa C. Southey, Marjanka K. Schmidt, Annegien Broeks, Senno Verhoef, Sten Cornelissen, Kenneth Muir, Artitaya Lophatananon, Sarah Stewart-Brown, Pornthep Siriwanarangsan, Peter A. Fasching, Christian R. Loehberg, Arif B. Ekici, Matthias W. Beckmann, Julian Peto, Isabel Dos Santos Silva, Nichola Johnson, Zoe Aitken, Elinor J. Sawyer, Ian Tomlinson, Michael J. Kerin, Nicola Miller, Frederik Marme, Andreas Schneeweiss, Christof Sohn, Barbara Burwinkel, Pascal Guénel, Thérèse Truong, Pierre Laurent-Puig, Florence Menegaux, Stig E. Bojesen, Børge G. Nordestgaard, Sune F. Nielsen, Henrik Flyger, Roger L. Milne, M. Pilar Zamora, Jose Ignacio Arias Perez, Javier Benitez, Hoda Anton-Culver, Hermann Brenner, Heiko Müller, Volker Arndt, Christa Stegmaier, Alfons Meindl, Peter Lichtner, Rita K. Schmutzler, Christoph Engel, Hiltrud Brauch, Ute Hamann, Christina Justenhoven, Kirsimari Aaltonen, Päivi Heikkilä, Kristiina Aittomäki, Carl Blomqvist, Keitaro Matsuo, Hidemi Ito, Hiroji Iwata, Aiko Sueta, Natalia V. Bogdanova, Natalia N. Antonenkova, Thilo Dörk, Annika Lindblom, Sara Margolin, Arto Mannermaa, Vesa Kataja, Veli-Matti Kosma, Jaana M. Hartikainen, Anna H. Wu, Chiu-Chen Tseng, David van den Berg, Daniel O. Stram, Diether Lambrechts, Stephanie Peeters, Ann Smeets, Giuseppe Floris, Jenny Chang-Claude, Anja Rudolph, Stefan Nickels, Dieter Flesch-Janys, Paolo Radice, Paolo Peterlongo, Bernardo Bonanni, Domenico Sardella, Fergus J. Couch, Xianshu Wang, Vernon S. Pankratz, Adam Lee, Graham G. Giles, Gianluca Severi, Laura Baglietto, Christopher A. Haiman, Brian E. Henderson, Fredrick Schumacher, Loic Le Marchand, Jacques Simard, Mark S. Goldberg, France Labrèche, Martine Dumont, Soo Hwang Teo, Cheng Har Yip, Char-Hong Ng, Eranga Nishanthie Vithana, Vessela Kristensen, Wei Zheng, Sandra Deming-Halverson, Martha Shrubsole, Jirong Long, Robert Winqvist, Katri Pylkäs, Arja Jukkola-Vuorinen, Mervi Grip, Irene L. Andrulis, Julia A. Knight, Gord Glendon, Anna Marie Mulligan, Peter Devilee, Caroline Seynaeve, Montserrat García-Closas, Jonine Figueroa, Stephen J. Chanock, Jolanta Lissowska, Kamila Czene, Daniel Klevebring, Nils Schoof, Maartje J. Hooning, John W. M. Martens, J. Margriet Collée, Madeleine Tilanus-Linthorst, Per Hall, Jingmei Li, Jianjun Liu, Keith Humphreys, Xiao-Ou Shu, Wei Lu, Yu-Tang Gao, Hui Cai, Angela Cox, Sabapathy P. Balasubramanian, William Blot, Lisa B. Signorello, Qiuyin Cai, Paul D. P. Pharoah, Catherine S. Healey, Mitul Shah, Karen A. Pooley, Daehee Kang, Keun-Young Yoo, Dong-Young Noh, Mikael Hartman, Hui Miao, Jen-Hwei Sng, Xueling Sim, Anna Jakubowska, Jan Lubinski, Katarzyna Jaworska-Bieniek, Katarzyna Durda, Suleeporn Sangrajrang, Valerie Gaborieau, James McKay, Amanda E. Toland, Christine B. Ambrosone, Drakoulis Yannoukakos, Andrew K. Godwin, Chen-Yang Shen, Chia-Ni Hsiung, Pei-Ei Wu, Shou-Tung Chen, Anthony Swerdlow, Alan Ashworth, Nick Orr, Minouk J. Schoemaker, Bruce A. J. Ponder, Heli Nevanlinna, Melissa A. Brown, Georgia Chenevix-Trench, Douglas F. Easton, Alison M. Dunning

Date Published: 1st Apr 2013

Publication Type: Journal article

Human Diseases: hereditary breast ovarian cancer syndrome

Seminal plasma adipokine levels are correlated with functional characteristics of spermatozoa
Genetical Statistics and Systems Biology

Abstract (Expand)

OBJECTIVE\backslashr\backslashnTo study adipokines as a potential link between obesity and male subfertility.\backslashr\backslashnDESIGN\backslashr\backslashnCross-sectional study of subjects stratified … into subgroups according to body mass index (BMI): normal-weight (18.50-24.99 kg/m(2)), overweight (25-29.99 kg/m(2)), and obese (\textgreater30 kg/m(2)).\backslashr\backslashnSETTING\backslashr\backslashnLeipzig, Germany from 2007 to 2011.\backslashr\backslashnPATIENT(S)\backslashr\backslashnNinety-six male volunteers without spermatogenesis-associated diseases.\backslashr\backslashnINTERVENTION(S)\backslashr\backslashnNone.\backslashr\backslashnMAIN OUTCOME MEASURE(S)\backslashr\backslashnSemen parameters, reproductive hormones in serum, and leptin, adiponectin, resistin, chemerin, progranulin, vaspin, and visfatin concentrations in serum and seminal plasma.\backslashr\backslashnRESULT(S)\backslashr\backslashnAll measured adipokines were detectable in human seminal plasma. The levels of progranulin, visfatin, and vaspin were statistically significantly higher in seminal plasma than in serum. An increase in body weight was associated with decreased levels of seminal plasma progranulin. Additionally, overweight/obese men had statistically significantly lower progranulin levels in seminal plasma than normal weight men. Adiponectin and progranulin concentrations in seminal plasma statistically significantly positively correlated with sperm concentration, sperm count, and total normomorphic spermatozoa.\backslashr\backslashnCONCLUSION(S)\backslashr\backslashnAdipokines are differently regulated in human male reproductive tract compared with the peripheral blood, and they could influence sperm functionality.

Authors: Stephanie Thomas, Dorothea Kratzsch, Michael Schaab, Markus Scholz, Sonja Grunewald, Joachim Thiery, Uwe Paasch, Jürgen Kratzsch

Date Published: 1st Apr 2013

Publication Type: Journal article

Genome-wide association study in BRCA1 mutation carriers identifies novel loci associated with breast and ovarian cancer risk
GC-HBOC - German Consortium for Hereditary Breast and Ovarian Cancer

Abstract (Expand)

BRCA1-associated breast and ovarian cancer risks can be modified by common genetic variants. To identify further cancer risk-modifying loci, we performed a multi-stage GWAS of 11,705 BRCA1 carriers (of … whom 5,920 were diagnosed with breast and 1,839 were diagnosed with ovarian cancer), with a further replication in an additional sample of 2,646 BRCA1 carriers. We identified a novel breast cancer risk modifier locus at 1q32 for BRCA1 carriers (rs2290854, P = 2.7 \times 10(-8), HR = 1.14, 95% CI: 1.09-1.20). In addition, we identified two novel ovarian cancer risk modifier loci: 17q21.31 (rs17631303, P = 1.4 \times 10(-8), HR = 1.27, 95% CI: 1.17-1.38) and 4q32.3 (rs4691139, P = 3.4 \times 10(-8), HR = 1.20, 95% CI: 1.17-1.38). The 4q32.3 locus was not associated with ovarian cancer risk in the general population or BRCA2 carriers, suggesting a BRCA1-specific association. The 17q21.31 locus was also associated with ovarian cancer risk in 8,211 BRCA2 carriers (P = 2\times10(-4)). These loci may lead to an improved understanding of the etiology of breast and ovarian tumors in BRCA1 carriers. Based on the joint distribution of the known BRCA1 breast cancer risk-modifying loci, we estimated that the breast cancer lifetime risks for the 5% of BRCA1 carriers at lowest risk are 28%-50% compared to 81%-100% for the 5% at highest risk. Similarly, based on the known ovarian cancer risk-modifying loci, the 5% of BRCA1 carriers at lowest risk have an estimated lifetime risk of developing ovarian cancer of 28% or lower, whereas the 5% at highest risk will have a risk of 63% or higher. Such differences in risk may have important implications for risk prediction and clinical management for BRCA1 carriers.

Authors: Fergus J. Couch, Xianshu Wang, Lesley McGuffog, Andrew Lee, Curtis Olswold, Karoline B. Kuchenbaecker, Penny Soucy, Zachary Fredericksen, Daniel Barrowdale, Joe Dennis, Mia M. Gaudet, Ed Dicks, Matthew Kosel, Sue Healey, Olga M. Sinilnikova, Adam Lee, François Bacot, Daniel Vincent, Frans B. L. Hogervorst, Susan Peock, Dominique Stoppa-Lyonnet, Anna Jakubowska, Paolo Radice, Rita Katharina Schmutzler, Susan M. Domchek, Marion Piedmonte, Christian F. Singer, Eitan Friedman, Mads Thomassen, Thomas v. O. Hansen, Susan L. Neuhausen, Csilla I. Szabo, Ignacio Blanco, Mark H. Greene, Beth Y. Karlan, Judy Garber, Catherine M. Phelan, Jeffrey N. Weitzel, Marco Montagna, Edith Olah, Irene L. Andrulis, Andrew K. Godwin, Drakoulis Yannoukakos, David E. Goldgar, Trinidad Caldes, Heli Nevanlinna, Ana Osorio, Mary Beth Terry, Mary B. Daly, Elizabeth J. van Rensburg, Ute Hamann, Susan J. Ramus, Amanda Ewart Toland, Maria A. Caligo, Olufunmilayo I. Olopade, Nadine Tung, Kathleen Claes, Mary S. Beattie, Melissa C. Southey, Evgeny N. Imyanitov, Marc Tischkowitz, Ramunas Janavicius, Esther M. John, Ava Kwong, Orland Diez, Judith Balmaña, Rosa B. Barkardottir, Banu K. Arun, Gad Rennert, Soo-Hwang Teo, Patricia A. Ganz, Ian Campbell, Annemarie H. van der Hout, Carolien H. M. van Deurzen, Caroline Seynaeve, Encarna B. Gómez Garcia, Flora E. van Leeuwen, Hanne E. J. Meijers-Heijboer, Johannes J. P. Gille, Margreet G. E. M. Ausems, Marinus J. Blok, Marjolijn J. L. Ligtenberg, Matti A. Rookus, Peter Devilee, Senno Verhoef, Theo A. M. van Os, Juul T. Wijnen, Debra Frost, Steve Ellis, Elena Fineberg, Radka Platte, D. Gareth Evans, Louise Izatt, Rosalind A. Eeles, Julian Adlard, Diana M. Eccles, Jackie Cook, Carole Brewer, Fiona Douglas, Shirley Hodgson, Patrick J. Morrison, Lucy E. Side, Alan Donaldson, Catherine Houghton, Mark T. Rogers, Huw Dorkins, Jacqueline Eason, Helen Gregory, Emma McCann, Alex Murray, Alain Calender, Agnès Hardouin, Pascaline Berthet, Capucine Delnatte, Catherine Nogues, Christine Lasset, Claude Houdayer, Dominique Leroux, Etienne Rouleau, Fabienne Prieur, Francesca Damiola, Hagay Sobol, Isabelle Coupier, Laurence Venat-Bouvet, Laurent Castera, Marion Gauthier-Villars, Mélanie Léoné, Pascal Pujol, Sylvie Mazoyer, Yves-Jean Bignon, Elżbieta Złowocka-Perłowska, Jacek Gronwald, Jan Lubinski, Katarzyna Durda, Katarzyna Jaworska, Tomasz Huzarski, Amanda B. Spurdle, Alessandra Viel, Bernard Peissel, Bernardo Bonanni, Giulia Melloni, Laura Ottini, Laura Papi, Liliana Varesco, Maria Grazia Tibiletti, Paolo Peterlongo, Sara Volorio, Siranoush Manoukian, Valeria Pensotti, Norbert Arnold, Christoph Engel, Helmut Deissler, Dorothea Gadzicki, Andrea Gehrig, Karin Kast, Kerstin Rhiem, Alfons Meindl, Dieter Niederacher, Nina Ditsch, Hansjoerg Plendl, Sabine Preisler-Adams, Stefanie Engert, Christian Sutter, Raymonda Varon-Mateeva, Barbara Wappenschmidt, Bernhard H. F. Weber, Brita Arver, Marie Stenmark-Askmalm, Niklas Loman, Richard Rosenquist, Zakaria Einbeigi, Katherine L. Nathanson, Timothy R. Rebbeck, Stephanie V. Blank, David E. Cohn, Gustavo C. Rodriguez, Laurie Small, Michael Friedlander, Victoria L. Bae-Jump, Anneliese Fink-Retter, Christine Rappaport, Daphne Gschwantler-Kaulich, Georg Pfeiler, Muy-Kheng Tea, Noralane M. Lindor, Bella Kaufman, Shani Shimon Paluch, Yael Laitman, Anne-Bine Skytte, Anne-Marie Gerdes, Inge Sokilde Pedersen, Sanne Traasdahl Moeller, Torben A. Kruse, Uffe Birk Jensen, Joseph Vijai, Kara Sarrel, Mark Robson, Noah Kauff, Anna Marie Mulligan, Gord Glendon, Hilmi Ozcelik, Bent Ejlertsen, Finn C. Nielsen, Lars Jønson, Mette K. Andersen, Yuan Chun Ding, Linda Steele, Lenka Foretova, Alex Teulé, Conxi Lazaro, Joan Brunet, Miquel Angel Pujana, Phuong L. Mai, Jennifer T. Loud, Christine Walsh, Jenny Lester, Sandra Orsulic, Steven A. Narod, Josef Herzog, Sharon R. Sand, Silvia Tognazzo, Simona Agata, Tibor Vaszko, JoEllen Weaver, Alexandra V. Stavropoulou, Saundra S. Buys, Atocha Romero, Miguel de La Hoya, Kristiina Aittomäki, Taru A. Muranen, Mercedes Duran, Wendy K. Chung, Adriana Lasa, Cecilia M. Dorfling, Alexander Miron, Javier Benitez, Leigha Senter, Dezheng Huo, Salina B. Chan, Anna P. Sokolenko, Jocelyne Chiquette, Laima Tihomirova, Tara M. Friebel, Bjarni A. Agnarsson, Karen H. Lu, Flavio Lejbkowicz, Paul A. James, Per Hall, Alison M. Dunning, Daniel Tessier, Julie Cunningham, Susan L. Slager, Chen Wang, Steven Hart, Kristen Stevens, Jacques Simard, Tomi Pastinen, Vernon S. Pankratz, Kenneth Offit, Douglas F. Easton, Georgia Chenevix-Trench, Antonis C. Antoniou

Date Published: 27th Mar 2013

Publication Type: Journal article

Human Diseases: hereditary breast ovarian cancer syndrome

Navigate

Health Atlas - Local Data Hub/Leipzig

The Health Atlas - Local Data Hub/Leipzig is an alliance of medical ontologists, medical systems biologists and clinical trials groups to design and implement a multi-functional and quality-assured atlas. It provides models, data and metadata on specific use cases from medical research fields.

Registered Repository

re3data.org Badge
Powered by
 (v.1.13.0-master)
Health Atlas | Funding and Programmes | Credits | Terms & Conditions | Privacy Policy | Imprint
Copyright © 2008 - 2021 The University of Manchester and HITS gGmbH
Institute for Medical Informatics, Statistics and Epidemiology, University of Leipzig

By continuing to use this site you agree to the use of cookies