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Calle M, Dawson L, Rojas M, Loetz E. 151 Influence of chorionic gonadotrophin, breeding procedure, and gonadotrophin-releasing hormone on pregnancy, embryo viability, and kidding rate of lactating Alpine goats time inseminated during the early transitional reproductive phase. Reprod Fertil Dev 2020. [DOI: 10.1071/rdv32n2ab151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Oestrus and ovulation synchronisation (E/OS) regimens containing equine chorionic gonadotrophin (ECG) are used for follicular stimulation during the early transitional reproductive phase and goat anestrus. However, the effects of ECG when applied at different times are unknown. Thus, the objective was to evaluate the influence of ECG, breeding procedure, and gonadotrophin-releasing hormone (GnRH) on pregnancy, embryonic viability, and kidding rate in dairy goats. We used 41 alpine goats (mean±standard deviation: 3.82±1.2 years old; 57.0±6.0kg of bodyweight; 1.75-2.25 body condition score; 195±16.7 days in milk; range of 1-4 kiddings). This study took place during the transitional phase (12h of daylight, 12h of dark) in September (35.9° N, 97.3° W) using controlled internal drug release intravaginal inserts (300mg of progestagen; P4) for 11, 12, or 13 days with a 2-mL intramuscular dose containing 10mg of dinoprost tromethamine at P4 removal. The E/OS protocols differed on the time when the 1-mL intramuscular dose of P.G. 600© (Merck Animal Health; 120 and 60IU of ECG and human chorionic gonadotrophin, respectively) was given (i.e. early=24h before P4 removal; late=24h after P4 removal), and the traditional control group did not receive P.G. 600. Time breeding, either by laparoscopic-aided insemination using frozen-thawed semen (n=28) or natural (n=13), was scheduled 48h after P4 removal. To improve embryo survival, 5 days post-breeding (dpb) 21 goats received 1mL of GnRH analogue intramuscularly as 50µgmL−1 gonadorelin diacetate tetrahydrate, and 20 control goats received 1mL of placebo intramuscularly. Pregnancy rate (PR) was evaluated at d 18-24 by non-return to oestrus, d 30 by pregnancy-specific protein B, and d 40 by ultrasound. Kidding rate was determined for females with at least one newborn. Logistic regression was used to establish statistical significance. Days of P4 exposure did not influence any response variable (P>0.20). Table 1 summarises the results; age influenced all PR evaluations. The number of kiddings and administration of GnRH at 5 dpb had a significant effect on PR, whereas bodyweight, days in milk, E/OS protocol, and breeding procedure were not influential. Embryo viability and kidding rate were not influenced by any variable. In short, P.G. 600 had no bearing on any response variable analysed. Late-lactating goats can be evaluated early in the transitional breeding phase using PR at 18-24, 30, or 40 dpb. As indicated by the lack of effect on embryo viability at 30 and 40 days, the mechanism by which GnRH increases PR was not by decreasing embryo mortality.
Table 1.Logistic model independent variable probabilities on response variables1
Response variable
Age (years)
BW
Kidding
DIM
E/OS protocol
GnRH
Breeding procedure
PR 18-24 d
0.02
0.65
0.15
0.52
0.37
0.21
0.30
PR 30 d
0.01
0.56
0.05
0.58
0.61
0.05
0.39
PR 40 d
0.001
0.12
0.01
0.60
0.62
0.02
0.35
EV 30 d
0.62
0.96
0.61
0.63
0.30
0.32
0.36
EV 40 d
0.44
0.90
0.26
0.36
0.46
0.17
0.40
KR
0.83
0.93
0.63
0.86
0.42
0.29
0.35
1BW=body weight; DIM=days in milk; E/OS=oestrus/ovulation synchronisation; GnRH=gonadotrophin-releasing hormone; PR=pregnancy rate; EV=embryo viability at 30 and 40 d; KR=kidding rate.
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Dawson L, Dinh D, Duffy S, Brennan A, Guymer E, Clark D, Oqueli E, Freeman M, Hiew C, Reid C, Ajani A. 861 Outcomes of Percutaneous Coronary Intervention Among Patients With Rheumatoid Arthritis. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Lukovic J, Kim J, Liu A, Ringash J, Brierley J, Wong R, Barry A, Dawson L, Cummings B, Krzyzanowska M, Chen E, Hedley D, Prince R, Quereshy F, Easson A, Swallow C, Gryfe R, Kennedy E, Hosni A. EP-1473 Anal adenocarcinoma: a comprehensive review of management practices and clinical outcomes. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31893-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Seal MD, Roebothan A, Gabriel A, Dawson L. Abstract P5-09-17: Risk reducing interventions among BRCA 1 and 2 female carriers in Newfoundland and Labrador: A provincial analysis. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p5-09-17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction
Germline mutations in the tumour suppressor genes BRCA 1 and 2 result in a significant increase in cancer predisposition. Female carriers can have up to a 50-70% chance of developing a breast malignancy in their life time and a risk of 20-40% for ovarian cancer. Management options for women with a BRCA mutation include screening with annual mammography and magnetic resonance imaging (MRI), prophylactic surgery and chemoprevention. There is substantial evidence that preventative strategies may reduce the risk of developing breast and ovarian cancer and in some cases improve survival.
Newfoundland and Labrador (NL) is the most easterly province in Canada with a population of 525 983. It is geographically and genetically isolated with the majority of residents from English and Irish ancestry. While no one single founder effect has been identified, geographically distinct mutations for both BRCA 1 and 2 have been described. The objective of this study is to characterize the population of BRCA mutation carriers in NL and to evaluate their uptake of risk reducing interventions.
Methods
All BRCA 1 and 2 carriers tested through the Provincial Medical Genetics program between 1996 - 2018 were captured. Inclusion criteria for this study were females ≥ 18 years of age residing in the province. Demographic, clinical history and information on uptake of risk reducing interventions were abstracted from the electronic medical record. Descriptive statistical analysis was performed.
Results
One hundred and sixty one women were identified that met inclusion criteria (38% of patients had BRCA1 and 62% had BRCA 2 mutations). Of those unaffected carriers eligible for mammography and MRI screening, only 58% were adherent in the last 18 months. Consultation with a medical or gynecological oncologist increased mammogram screening within the last 18 months to 71% compared with 29% of women who did not see an oncologist. MRI screening increased to 80% for those assessed by oncology versus 20% who did not. For those women who underwent prophylactic surgeries, 27% had bilateral mastectomies with the majority having breast reconstruction (>70%). Fifty two percent of carriers had bilateral salpingo-oophorectomies (BSO) at a median age of 45 years in BRCA 1 and 51 years in BRCA 2.
Fifty-three women had a diagnosis of breast cancer and 8 had ovarian cancer. In this cohort, most underwent genetic testing after their diagnosis of cancer (>80%). Median age at presentation of breast cancer was 44 years versus 54 years for ovarian cancer.
Conclusion
This study demonstrates that women with BRCA 1 and 2 mutations are not adequately availing of risk reducing interventions for breast and ovarian cancer. Furthermore, most patients with malignancy did not undergo genetic testing until after they were diagnosed with cancer. Patient focused research designed to explore factors which may contribute is planned. Consultation with an oncologist increased the likelihood of adherence to breast cancer screening. This highlights the importance of specialty care for patients with a hereditary predisposition to breast and ovarian cancer.
Citation Format: Seal MD, Roebothan A, Gabriel A, Dawson L. Risk reducing interventions among BRCA 1 and 2 female carriers in Newfoundland and Labrador: A provincial analysis [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P5-09-17.
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Dagan M, Dawson L, Stehli J, Koh S, Quine E, Walton A, Stub D, Htun N, Duffy S. Incidence, Predictors and Outcomes of Myocardial Injury Following Transcatheter Aortic Valve Implantation (TAVI). Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Koh J, Stehli J, Martin C, Quine E, Dagan M, Dawson L, Dong M, Crawford C, Htun N, Stub D, Walton A, Duffy S. Impact of Left Ventricular Ejection Fraction on Outcomes Following Transcatheter Aortic Valve Implantation. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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32
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Pol D, Yao J, Deutscher E, Dawson L, Brooks M. Trends in Management of Dyslipidaemia in Australia Over the Last 5 Years. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Montalto S, Dawson L, Yao J, Velusamy R, Pol D, Blusztein D, Wong J, Grigg L, Wilson W, Brooks M, Gurvitch R. Impact of Pulmonary Hypertension on Outcome Following Transcatheter Aortic Valve Implantation. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Koh J, Stehli J, Martin C, Quine E, Dagan M, Dawson L, Htun N, Stub D, Walton A, Duffy S. Predictors of Clinical Outcomes Following Transcatheter Aortic Valve Implantation. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Dawson L, Cadden J, Pol D, Stephenson I. Learning Curve and Initial Experience of Implementing a HIS Bundle Pacing Program. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Dawson L, Dinh D, Duffy S, Brennan A, Clark D, Reid C, Blusztein D, Stub D, Andrianopoulos N, Freeman M, O’Queli E, Hutchison A, Ajani A. Percutaneous Coronary Intervention Outcomes Following Out-of-Hospital Cardiac Arrest For Patients With and Without ST-Elevation Myocardial Infarction. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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37
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Pol D, Gurvitch R, Blusztein D, Dawson L, Wilson W. Outcomes of Tricuspid Valve in Valve Implantation Via Trans-jugular and Transfemoral Approach. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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38
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Dawson L, Yao J, Velusamy R, Montalto S, Pol D, Blusztein D, Wong J, Grigg L, Wilson W, Brooks M, Gurvitch R. Long-term Outcomes With Non-Femoral Access for Transcatheter Aortic Valve Implantation. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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39
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Koh J, Stehli J, Martin C, Dagan M, Dawson L, Liew S, Htun N, Stub D, Walton A, Duffy S. Ten-year Trends in Transcatheter Aortic Valve Implantation. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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40
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Blusztein D, Wilson W, Brooks M, Pol D, Dawson L, Montalto S, Gurvitch R. Transcatheter Aortic Valve Implantation in the Very Large Annulus – Beyond the “Recommended Retail”. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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41
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Dawson L, Dinh D, Duffy S, Clark D, Reid C, Brennan A, Andrianopoulos N, Hiew C, Freeman M, O’Queli E, Chan W, Ajani A. An Overview of the Melbourne Interventional Group Registry: Results from 34,797 Percutaneous Coronary Intervention Procedures 2005–2017. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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42
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Dagan M, Dawson L, Stehli J, Koh S, Quine E, Walton A, Stub D, Htun N, Duffy S. Incidence, Management and Impact of Incidental Coronary Artery Disease on Outcomes Following Transcatheter Aortic Valve Implantation. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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43
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Goetsch A, Tsukahara Y, Gipson T, Hart S, Dawson L, Wang Z, Puchala R, Sahlu T. PSV-26 Late-Breaking: The Varying Relationship Between Packed Cell Volume and Fecal Egg Count in Different Breeds of Hair Sheep and Meat Goats Artificially Infected with Haemonchus Contortus. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.1003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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44
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Bissell V, Chamberlain S, Davenport E, Dawson L, Jenkins S, Murphy R. The Overseas Registration Examination of the General Dental Council. Br Dent J 2018; 221:257-61. [PMID: 27608580 DOI: 10.1038/sj.bdj.2016.645] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/01/2016] [Indexed: 11/09/2022]
Abstract
The Overseas Registration Examination is a route to entry to the UK Dentists Register for dentists who have qualified outside the European Economic Area. The role of the examination is to protect the public by ensuring that such dentists meet minimum standards of competence. Candidates invest considerable time and resource in attempting the examination. For these reasons it is essential that the examination is both robust and fair. This paper describes the fundamental principles of assessment underpinning the design of the examination and the steps taken by the General Dental Council's ORE Advisory Group to assure its ongoing quality.
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Dawson L, Allan S, Brough D, Ritchie J, Weber P, Wren S. Targeting the immune system in disease. Highlights from the Society for Medicines Research meeting. Manchester, UK - March 8, 2018. DRUG FUTURE 2018. [DOI: 10.1358/dof.2018.043.04.2808577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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46
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Dawson L, Yao J, Skillington P, Grigg L. 0379 A Rare Case of Incidental Left Ventricular Pseudoaneurysm as a Complication of Mitral Valve Surgery. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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47
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Dawson L, Yao J, Lefkovits J, Better N. Non–Invasive Investigations for Coronary Artery Disease Over a 10-Year Period in Australia: Increasing Use and Economic Impact. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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48
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Clifford K, Ten Hove R, Dawson L, Grootegoed L, Palma S. The development of an evidenced based case study database to demonstrate the value and impact of physiotherapy. Physiotherapy 2017. [DOI: 10.1016/j.physio.2017.11.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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49
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Green E, Howe T, Preston J, Dawson L, Davidson P. Evaluation of outcome measures for use in clinical practice for adults with musculoskeletal shoulder problems: a systematic review. Physiotherapy 2017. [DOI: 10.1016/j.physio.2017.11.141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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50
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Green J, Howe T, Preston J, Dawson L. Clinician adherence to protocol and reporting is low in determining caseload characteristics of adults with shoulder pain. Physiotherapy 2017. [DOI: 10.1016/j.physio.2017.11.138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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