1
|
Barrett ES, Sullivan A, Workman T, Zhang Y, Loftus CT, Szpiro AA, Paquette A, MacDonald JW, Coccia M, Smith R, Bowman M, Smith A, Derefinko K, Nguyen RHN, Zhao Q, Sathyanarayana S, Karr C, LeWinn KZ, Bush NR. Sex-specific associations between placental corticotropin releasing hormone and problem behaviors in childhood. Psychoneuroendocrinology 2024; 163:106994. [PMID: 38387218 DOI: 10.1016/j.psyneuen.2024.106994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 02/13/2024] [Accepted: 02/14/2024] [Indexed: 02/24/2024]
Abstract
Placental corticotropin-releasing hormone (pCRH) is a neuroactive peptide produced in high concentrations in mid-late pregnancy, during key periods of fetal brain development. Some evidence suggests that higher pCRH exposure during gestation is associated with adverse neurodevelopment, particularly in female offspring. In 858 mother-child dyads from the sociodemographically diverse CANDLE cohort (Memphis, TN), we examined: (1) the slope of pCRH rise in mid-late pregnancy and (2) estimated pCRH at delivery as a measure of cumulative prenatal exposure. When children were 4 years-old, mothers reported on problem behaviors using the Child Behavior Checklist (CBCL) and cognitive performance was assessed by trained psychologists using the Stanford-Binet Intelligence Scales. We fitted linear regression models examining pCRH in relation to behavioral and cognitive performance measures, adjusting for covariates. Using interaction models, we evaluated whether associations differed by fetal sex, breastfeeding, and postnatal neighborhood opportunity. In the full cohort, log-transformed pCRH measures were not associated with outcomes; however, we observed sex differences in some models (interaction p-values≤0.01). In male offspring, an interquartile (IQR) increase in pCRH slope (but not estimated pCRH at delivery), was positively associated with raw Total (β=3.06, 95%CI: 0.40, 5.72), Internalizing (β=0.89, 95%CI: 0.03, 1.76), and Externalizing (β=1.25, 95%CI: 0.27, 2.22) Problem scores, whereas, in females, all associations were negative (Total Problems: β=-1.99, 95%CI: -3.89, -0.09; Internalizing: β=-0.82, 95%CI: -1.42, -0.23; Externalizing: β=-0.56, 95%CI: -1.34, 0.22). No associations with cognitive performance were observed nor did we observe moderation by breastfeeding or postnatal neighborhood opportunity. Our results provide further evidence that prenatal pCRH exposure may impact subsequent child behavior in sex-specific ways, however in contrast to prior studies suggesting adverse impacts in females, steeper mid-gestation pCRH rise was associated with more problem behaviors in males, but fewer in females.
Collapse
Affiliation(s)
- Emily S Barrett
- Department of Biostatistics and Epidemiology, Rutgers School of Public Health, Piscataway, NJ, USA; Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, NJ, USA.
| | - Alexandra Sullivan
- Center for Health and Community, University of California, San Francisco, CA, USA; Department of Psychiatry and Behavioral Sciences, Weill Institute for Neurosciences, University of California San Francisco, San Francisco, CA, USA
| | - Tomomi Workman
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA
| | - Yuhong Zhang
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA
| | - Christine T Loftus
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA
| | - Adam A Szpiro
- Department of Biostatistics, University of Washington, Seattle, WA, USA
| | - Alison Paquette
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA; Seattle Children's Research Institute, Seattle, WA, USA; Department of Pediatrics, University of Washington, Seattle, WA, USA
| | - James W MacDonald
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA
| | - Michael Coccia
- Center for Health and Community, University of California, San Francisco, CA, USA
| | - Roger Smith
- Mothers and Babies Research Centre, Hunter Medical Research Institute, University of Newcastle, Newcastle, Australia
| | - Maria Bowman
- Mothers and Babies Research Centre, Hunter Medical Research Institute, University of Newcastle, Newcastle, Australia
| | - Alicia Smith
- Department of Gynecology and Obstetrics, Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, USA
| | - Karen Derefinko
- Department of Preventive Medicine, University of Tennessee Health Sciences Center, Memphis, TN, USA
| | - Ruby H N Nguyen
- Division of Epidemiology and Community Health, University of Minnesota, Minneapolis, MN, USA
| | - Qi Zhao
- Department of Preventive Medicine, University of Tennessee Health Sciences Center, Memphis, TN, USA
| | - Sheela Sathyanarayana
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA; Seattle Children's Research Institute, Seattle, WA, USA; Department of Pediatrics, University of Washington, Seattle, WA, USA; Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - Catherine Karr
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA; Department of Pediatrics, University of Washington, Seattle, WA, USA; Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - Kaja Z LeWinn
- Department of Psychiatry and Behavioral Sciences, Weill Institute for Neurosciences, University of California San Francisco, San Francisco, CA, USA
| | - Nicole R Bush
- Center for Health and Community, University of California, San Francisco, CA, USA; Department of Psychiatry and Behavioral Sciences, Weill Institute for Neurosciences, University of California San Francisco, San Francisco, CA, USA; Department of Pediatrics, University of California San Francisco, San Francisco, CA, USA
| |
Collapse
|
2
|
Menagh C, Bowman M. 61 STROKE MIMIC CASE REPORT: A YOUNG PATIENT WITH COVID-19 REFERRED TO NEUROVASCULAR CLINIC SUBSEQUENTLY DIAGNOSED WITH SYSTEMIC ARTERIAL EMBOLI. Age Ageing 2022. [PMCID: PMC9620318 DOI: 10.1093/ageing/afac218.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Background An independent 44 year-old is reviewed at Neurovascular Clinic with a suspected high-risk Transient-Ischaemic-Attack (TIA). He had a recent diagnosis of COVID-19. Investigations revealed multiple systemic arterial emboli responsible for his symptoms, rather than a cerebrovascular cause. Methods The patient attended our Neurovascular Clinic following a virtual Stroke Consultant telephone assessment 3 days previously, when he had been referred from his GP with a brief episode of left arm weakness. This was felt to be a high-risk TIA event. He had tested COVID-19 positive with mild flu-like symptoms 4 days prior to this event. He described sudden onset weakness involving the left forearm and wrist which became ‘floppy’. Symptoms had fully resolved within one hour. His only reported vascular risk factor was controlled essential hypertension. He was a life-long non-smoker with no family history of stroke. On examination his left arm felt significantly colder than the right. His radial pulses bilaterally were palpable with good volume. Blood pressure was satisfactory in both arms. No other focal neurology was found. Results Computed-Tomography (CT) angiogram of the left arm revealed an occlusion of the ulnar artery in the antecubital fossa, dilated aortic root, splenic infarcts and probable pulmonary emboli. CT pulmonary angiogram revealed large bilateral volume pulmonary emboli within both main pulmonary arteries extending into all lobar branches of both pulmonary arteries. A Patent Foramen Ovale was not seen on bubble-contrast transthoracic echocardiogram. Diffusion-weighted Magnetic-Resonance-Imaging (MRI) Brain was normal. Anticoagulation with Apixaban for 6 months was commenced for provoked emboli following consultation with our trust haematologist. Conclusion This case of a so-called “stroke mimic” highlights a pitfall of virtual assessment for neurovascular patients and the need for assessing in person those who we should have a higher suspicion for alternative pathology, especially in those who were recently COVID-19 positive given documented pro-thrombotic tendencies.
Collapse
Affiliation(s)
- C Menagh
- South Eastern Health and Social Care Trust , Dundonald, Northern Ireland
| | - M Bowman
- South Eastern Health and Social Care Trust , Dundonald, Northern Ireland
| |
Collapse
|
3
|
Sachdev A, Sharpe I, Bowman M, Gyawali B, Booth C. 1334P Objective response rates of placebo in randomized controlled trials of anticancer medicines: 2015 – 2019. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
|
4
|
Bowman M, Dennis M, Derwin T, Puranik R. The Effect of Region of Interest, a Post-Processing Variable, on CMR Native T1 Values. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
5
|
Isbister J, Singh A, Gray B, Yeates L, Bowman M, Raju H, Semsarian C, Puranik R, Sy R. Longitudinal CMR Assessment of Structural Phenotype in Brugada Syndrome. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
|
6
|
Bowman M, Jacobs R, Gordon M, Lahoti M, Samdani P. 12 Bioinformatic analysis of a large-scale equine microbiome study. J Equine Vet Sci 2021. [DOI: 10.1016/j.jevs.2021.103475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
7
|
Bowman M, Jacobs R, Gordon M. 10 Characterization of the fecal microbiome of mares from parturition to weaning. J Equine Vet Sci 2021. [DOI: 10.1016/j.jevs.2021.103473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
8
|
Das J, Snowden JA, Burman J, Freedman MS, Atkins H, Bowman M, Burt RK, Saccardi R, Innocenti C, Mistry S, Laud PJ, Jessop H, Sharrack B. Autologous haematopoietic stem cell transplantation as a first-line disease-modifying therapy in patients with 'aggressive' multiple sclerosis. Mult Scler 2021; 27:1198-1204. [PMID: 33565902 PMCID: PMC8226372 DOI: 10.1177/1352458520985238] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Autologous haematopoietic stem cell transplantation (AHSCT) is an effective treatment for patients with multiple sclerosis (MS) who have highly active disease, despite the use of standard disease-modifying therapies (DMTs). However, the optimal time for offering AHSCT to patients with 'aggressive' MS is yet to be established. OBJECTIVES The objective was to explore the safety and efficacy of AHSCT as a first-line DMT in patients with 'aggressive' MS. METHODS All patients with 'aggressive' MS who received AHSCT as a first-line DMT in five European and North American centres were retrospectively evaluated. RESULTS Twenty patients were identified. The median interval between diagnosis and AHSCT was 5 (1-20) months. All had multiple poor prognostic markers with a median pre-transplant Expanded Disability Status Scale (EDSS) score of 5.0 (1.5-9.5). After a median follow-up of 30 (12-118) months, the median EDSS score improved to 2.0 (0-6.5, p < 0.0001). No patient had further relapses. Three had residual magnetic resonance imaging (MRI) disease activities in the first 6 months post-transplant, but no further new or enhancing lesions were observed in subsequent scans. CONCLUSION AHSCT is safe and effective as a first-line DMT in inducing rapid and sustained remission in patients with 'aggressive' MS.
Collapse
Affiliation(s)
- J Das
- Sheffield Institute for Translational Neuroscience, University of Sheffield, UK/Academic Department of Neurology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - J A Snowden
- Department of Haematology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - J Burman
- Department of Neurology, Uppsala University Hospital, Uppsala, Sweden
| | - M S Freedman
- Department of Medicine (Neurology), The University of Ottawa and The Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - H Atkins
- Department of Medicine (Neurology), The University of Ottawa and The Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - M Bowman
- Department of Medicine (Neurology), The University of Ottawa and The Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - R K Burt
- Division of Immunotherapy, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - R Saccardi
- Department of Cellular Therapies and Transfusion Medicine, Careggi University Hospital, Florence, Italy
| | - C Innocenti
- Department of Cellular Therapies and Transfusion Medicine, Careggi University Hospital, Florence, Italy
| | - S Mistry
- Academic Department of Neurology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - P J Laud
- Statistical Services Unit, University of Sheffield, Sheffield, UK
| | - H Jessop
- Department of Haematology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - B Sharrack
- Academic Department of Neurology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK; Sheffield Institute for Translational Neuroscience, University of Sheffield, UK
| |
Collapse
|
9
|
Wood SA, Bowman M. Large-scale farmer-led experiment demonstrates positive impact of cover crops on multiple soil health indicators. Nat Food 2021; 2:97-103. [PMID: 37117404 DOI: 10.1038/s43016-021-00222-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 01/12/2021] [Indexed: 04/30/2023]
Abstract
Cover crops are touted for their potential agronomic and environmental benefits, and are currently incentivized through state, federal and private investment in the USA. There is a need to quantify the impact of on-farm use of cover crops at spatial (2-5 years) and temporal (regional-to-national) scales aligned with such investment programmes. Here we report soil health data from a farmer-led trial of cover crops on 1,522 strip-years, from 78 farms across 9 US states over 5 years. We found that up to 5 years of cover crop use had small but increasing impacts on four of six selected soil health indicators, with active carbon concentration responding the most rapidly. Soil texture, the length of time a field was in the trial and a farm-level random effect were also strongly related to soil health properties. Our results fit with evidence from controlled trials and suggest that the use of cover crops can begin to influence soil health within several years after adoption.
Collapse
Affiliation(s)
- Stephen A Wood
- The Nature Conservancy, Arlington, VA, USA.
- Yale School of the Environment, New Haven, CT, USA.
| | - Maria Bowman
- Soil Health Partnership, National Corn Growers Association, Chesterfield, MO, USA
| |
Collapse
|
10
|
Steine IM, LeWinn KZ, Lisha N, Tylavsky F, Smith R, Bowman M, Sathyanarayana S, Karr CJ, Smith AK, Kobor M, Bush NR. Maternal exposure to childhood traumatic events, but not multi-domain psychosocial stressors, predict placental corticotrophin releasing hormone across pregnancy. Soc Sci Med 2020; 266:113461. [PMID: 33126094 PMCID: PMC9380779 DOI: 10.1016/j.socscimed.2020.113461] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 09/19/2020] [Accepted: 10/15/2020] [Indexed: 12/11/2022]
Abstract
Maternal psychosocial stress increases the risk of adverse birth and postnatal outcomes for the mother and child, but the role of maternal exposure to childhood traumatic events (CTE) and multi-domain psychosocial stressors for the level and rise of placental Corticotrophin-Releasing Hormone (pCRH) across pregnancy has been understudied. In a sociodemographically and racially diverse sample of 1303 women (64% Black, 36% White/others) with low-medical risk pregnancies at enrollment from Shelby County, Tennessee, USA, blood samples were drawn twice, corresponding roughly to second and third trimester, and extracted prior to conducting radioimmune assays for pCRH. Mothers reported CTE (physical abuse, sexual abuse, or family violence, in childhood), adulthood traumatic events, and interpersonal violence during pregnancy. Neighborhood crime/deprivation was derived using geospatially-linked objective databases. General linear and mixed models tested associations between stress exposure variables and pCRH levels and rate of rise, adjusting for obstetric/clinical/health related factors. Maternal CTE did not predict pCRH levels at time 1, but positively predicted levels at time 2, and the rate of rise in pCRH across pregnancy. Race did not moderate this association. No additional maternal stress exposures across adulthood or during pregnancy predicted pCRH outcomes. Findings indicate that childhood violence or abuse exposure can become biologically embedded in a manner predicting later prenatal physiology relevant for maternal and offspring health, and that such embedding may be specific to childhood, but not adulthood, stress. Findings also highlight the placental-fetal unit as a mechanistic pathway through which intergenerational transmission of the adverse effects of childhood adversities may occur.
Collapse
Affiliation(s)
- Iris M Steine
- Visiting Scholar, UC Berkeley, Department of Psychology, 2121 Berkeley Way, Berkeley, CA, 94704, USA; Department of Psychosocial Science, University of Bergen, Christiesgate 12, 5015 Bergen, Norway.
| | - Kaja Z LeWinn
- Department of Psychiatry and Weill Institute for Neurosciences, University of California San Francisco, USA
| | - Nadra Lisha
- Department of General Internal Medicine, University of California San Francisco, USA
| | - Frances Tylavsky
- Department of Preventive Medicine, University of Tennessee Health Science Center, Memphis, USA
| | - Roger Smith
- Hunter Medical Research Institute, University of Newcastle, Newcastle, Australia
| | - Maria Bowman
- Hunter Medical Research Institute, University of Newcastle, Newcastle, Australia
| | - Sheela Sathyanarayana
- University of Washington Department of Pediatrics, Seattle, USA; Seattle Children's Research Institute, Seattle, USA; University of Washington Department of Environmental and Occupational Health Sciences, Seattle, USA
| | - Catherine J Karr
- University of Washington Department of Environmental and Occupational Health Sciences, Seattle, USA; University of Washington Departments of Pediatrics, Seattle, USA
| | - Alicia K Smith
- Department of Gynecology and Obstetrics, Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, USA
| | - Michael Kobor
- Department of Medical Genetics, University of British Columbia, Canada
| | - Nicole R Bush
- Departments of Psychiatry and Pediatrics, University of California San Francisco, USA
| |
Collapse
|
11
|
Egeler ME, Bowman M, Thayer JF, Brindle RC, Hall M, Kline CE. 1088 Heart Rate Variability During Sleep in Adults With and Without a History of Depression and the Influence of Antidepressant Use. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.1083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Individuals with depression have an increased risk for cardiovascular disease. While lower daytime HRV may be one mechanism of this association, it is less clear whether HRV during sleep (sHRV) differs between adults with and without depression. Examining sHRV is an important measure to test given evidence that nocturnal differences in physiology are strong predictors of cardiovascular disease.
Methods
118 adults who completed psychiatric interviews between the ages of 21-60 y (T1) returned 18.7 ± 4.5 years later for a re-evaluation of their mental health and assessment of sleep (T2). 71 participants were diagnosed with Major Depressive Disorder (MDD) at either T1 or T2, while 47 participants were free from depression at both time points. At T2, participants underwent an overnight polysomnogram with concurrent assessment of electrocardiography. The primary measures of sHRV were root mean square of successive differences (RMSSD) values during rapid eye movement (REM) sleep and non-REM (NREM) sleep stages N2 and N3. Lower values of RMSSD suggest lower parasympathetic activity. RMSSD values were natural log-transformed prior to analysis. Differences in RMSSD between depressive groups were examined using analysis of covariance (ANCOVA), adjusting for age, body mass index, gender, race, and antihypertensive medication use. Additional ANCOVA models adjusted for antidepressant use.
Results
Participants with current or a history of MDD had lower RMSSD values during REM sleep (P=.01) and a trend toward lower values during NREM (P=.06) compared to those without MDD. Antidepressant use was significantly associated with lower RMSSD during both REM (P=.002) and NREM sleep (P<.001). Depression history was no longer associated with RMSSD during NREM or REM sleep following adjustment for antidepressant use (P>.40).
Conclusion
These data indicate that adults with MDD exhibit lower parasympathetic activity during sleep compared to those without MDD. These associations were modified by antidepressant use, suggesting that antidepressants may partially explain the association between depression and sHRV. Future studies investigating the influence of specific antidepressants for modifying nocturnal physiology may help to better understand the link between depression and cardiovascular disease risk.
Support
This study was funded by National Institutes of Health (NIH) grants R01 HL104607 and K23 HL118318.
Collapse
Affiliation(s)
- M E Egeler
- University of Pittsburgh, Pittsburgh, PA
| | - M Bowman
- University of Pittsburgh, Pittsburgh, PA
| | - J F Thayer
- University of California Irvine, Irvine, CA
| | - R C Brindle
- Washington and Lee University, Lexington, VA
| | - M Hall
- University of Pittsburgh, Pittsburgh, PA
| | - C E Kline
- University of Pittsburgh, Pittsburgh, PA
| |
Collapse
|
12
|
Li Z, Wang AY, Bowman M, Hammarberg K, Farquhar C, Johnson L, Safi N, Sullivan EA. Cumulative live birth rates following a 'freeze-all' strategy: a population-based study. Hum Reprod Open 2019; 2019:hoz004. [PMID: 30895269 PMCID: PMC6400239 DOI: 10.1093/hropen/hoz004] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 12/07/2018] [Accepted: 02/07/2019] [Indexed: 11/13/2022] Open
Abstract
STUDY QUESTION What is the cumulative live birth rate following a ‘freeze-all’ strategy compared with a ‘fresh-transfer’ strategy? SUMMARY ANSWER The ‘freeze-all’ strategy resulted in a similar cumulative live birth rate as the ‘fresh-transfer’ strategy among high responders (>15 oocytes retrieved) but did not benefit normal (10–15 oocytes) and suboptimal responders (<10 oocytes). WHAT IS KNOWN ALREADY Frozen-thawed embryo transfer is associated with a decreased risk of adverse obstetric and perinatal outcomes compared with fresh embryo transfer. It is unclear whether the ‘freeze-all’ strategy should be offered to all women undergoing ART treatment. STUDY DESIGN, SIZE, DURATION A population-based retrospective cohort study using data collected by the Victorian Assisted Reproductive Treatment Authority. This study included 14 331 women undergoing their first stimulated ART cycle with at least one oocyte fertilised between 1 July 2009 and 30 June 2014 in Victoria, Australia. Demographic characteristics, type of ART procedures and resulting pregnancy and birth outcomes were recorded for the stimulated cycle and associated thaw cycles until 30 June 2016, or until a live birth was achieved, or until all embryos from the stimulated cycle had been used. PARTICIPANTS/MATERIALS, SETTING, METHODS Women were grouped by whether they had undergone the ‘freeze-all’ strategy (n = 1028) where all embryos were cryopreserved for future transfer, or the ‘fresh-transfer’ strategy (n = 13 303) where selected embryo(s) were transferred in the stimulated cycle, and remaining embryo(s) were cryopreserved for future use. A discrete-time survival model was used to evaluate the cumulative live birth rate following ‘freeze-all’ and ‘fresh-transfer’ strategy. MAIN RESULTS AND THE ROLE OF CHANCE A total of 1028 women undergoing ‘freeze-all’ strategy and 13 303 women undergoing ‘fresh-transfer’ strategy had 1788 and 22 334 embryo transfer cycles resulting in 452 and 5126 live births, respectively. Most women (61.3%) in the ‘freeze-all’ group had more than 15 oocytes retrieved in the stimulated cycle compared with 18.1% of women in the ‘fresh-transfer’ group (P < 0.001). For high responders (>15 oocytes), the cumulative live birth rate in the ‘freeze-all’ group was similar to the ‘fresh-transfer’ group (56.8% vs. 56.2%, adjusted hazard ratio (AHR) 0.90, 95% CI 0.77–1.04). However, the likelihood of a live birth was lower in the ‘freeze-all’ group compared with the ‘fresh-transfer’ group among normal responders (10–15 oocytes) (33.2% vs. 46.3%, AHR 0.62, 95% CI 0.46–0.83) and suboptimal responders (<10 oocytes) (14.6% vs. 28.0%, AHR 0.67, 95% CI 0.14–1.01). During the minimum follow-up time of 2 years, 34.1%, 24.4% and 8.4% of suboptimal, normal and high responders, respectively, in the ‘freeze-all’ group did not return for any embryo transfer after the stimulated cycle, whereas all women in the ‘fresh-transfer’ group had at least one embryo transferred in the stimulated cycle. LIMITATIONS REASONS FOR CAUTION A limitation of this population-based study is the lack of information available on clinic-specific protocols for the ‘freeze-all’ strategy and the potential impact of these on outcomes. Data were not available on whether the ‘freeze-all’ strategy was used to prevent ovarian hyperstimulation syndrome (OHSS). WIDER IMPLICATIONS OF THE FINDINGS This study presents population-based evidence on clinical efficacy associated with a ‘freeze-all’ and ‘fresh-transfer’ strategy. The ‘freeze-all’ strategy may benefit some subgroups of patients, including women who are high responders and those who are at risk of OHSS, but should not be offered universally. Clinicians should consider the potential impact of electively deferring embryo transfer on treatment discontinuation in choosing the optimal embryo transfer strategy for couples undergoing ART treatment. STUDY FUNDING/COMPETING INTEREST(S) No specific funding was received to undertake this study. There is no conflict of interest, except that M.B. is a shareholder in Genea Ltd.
Collapse
Affiliation(s)
- Z Li
- Sydney Medical School, Faculty of Medicine and Health, University of Sydney, Sydney NSW, Australia.,Australian Centre for Public and Population Health Research, Faculty of Health, University of Technology Sydney, Sydney NSW, Australia
| | - A Y Wang
- Australian Centre for Public and Population Health Research, Faculty of Health, University of Technology Sydney, Sydney NSW, Australia
| | - M Bowman
- Sydney Medical School, Faculty of Medicine and Health, University of Sydney, Sydney NSW, Australia
| | - K Hammarberg
- Victorian Assisted Reproductive Treatment Authority, Melbourne VIC, Australia.,School of Public Health and Preventive Medicine, Faculty of Medicine, Nursing and Health Sciences, Monash University, Melbourne VIC, Australia
| | - C Farquhar
- Department of Obstetrics and Gynaecology, University of Auckland, Auckland 1010, New Zealand
| | - L Johnson
- Victorian Assisted Reproductive Treatment Authority, Melbourne VIC, Australia
| | - N Safi
- Australian Centre for Public and Population Health Research, Faculty of Health, University of Technology Sydney, Sydney NSW, Australia
| | - E A Sullivan
- Australian Centre for Public and Population Health Research, Faculty of Health, University of Technology Sydney, Sydney NSW, Australia
| |
Collapse
|
13
|
Swales DA, Grande LA, Wing DA, Edelmann M, Glynn LM, Sandman C, Smith R, Bowman M, Davis EP. Can Placental Corticotropin-Releasing Hormone Inform Timing of Antenatal Corticosteroid Administration? J Clin Endocrinol Metab 2019; 104:443-450. [PMID: 30215731 PMCID: PMC6304068 DOI: 10.1210/jc.2018-00956] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 09/06/2018] [Indexed: 11/19/2022]
Abstract
CONTEXT Antenatal corticosteroids are commonly administered to pregnant women at risk for delivering between 23 and 34 gestational weeks; they provide crucial benefits to fetal lung maturation and reduce risk for neonatal morbidity and mortality. Corticosteroids are maximally efficacious for lung maturation when administered within 2 to 7 days of delivery. Accurately identifying the timing of preterm delivery is thus critical to ensure that antenatal corticosteroids are administered within a week of delivery and to avoid unnecessary administration to women who will deliver at term. A plausible biomarker for predicting time of delivery is placental corticotropin-releasing hormone (pCRH). OBJECTIVE To assess whether pCRH concentrations predict time to delivery and specifically which women will deliver within a week of treatment. DESIGN pCRH concentrations were evaluated before administration of the corticosteroid betamethasone, and timing of delivery was recorded. PARTICIPANTS A total of 121 women with singleton pregnancies who were prescribed betamethasone. RESULTS Elevated pCRH concentrations were associated with a shorter time from treatment to delivery. Receiver-operating characteristic curves revealed that pCRH may improve the precision of predicting preterm delivery. CONCLUSIONS In the current sample, pCRH concentrations predicted the likelihood of delivering within 1 week of corticosteroid treatment. Current findings suggest that pCRH may be a diagnostic indicator of impending preterm delivery. Increasing the precision in predicting time to delivery could inform when to administer antenatal corticosteroids, thus maximizing benefits and reducing the likelihood of exposing fetuses who will be delivered at term.
Collapse
Affiliation(s)
- Danielle A Swales
- Department of Psychology, University of Denver, Denver, Colorado
- Correspondence and Reprint Requests: Danielle A. Swales, MA, Department of Psychology, University of Denver, Frontier Hall, 2155 South Race Street, Denver, Colorado 80206. E-mail:
| | - Leah A Grande
- Department of Psychology, University of Denver, Denver, Colorado
| | - Deborah A Wing
- Obstetrics and Gynecology, University of California, Irvine, Orange, California
| | | | - Laura M Glynn
- Department of Psychology, Chapman University, Orange, California
| | - Curt Sandman
- Department of Psychiatry, University of California, Irvine, Irvine, California
| | - Roger Smith
- Mothers and Babies Research Centre, Hunter Medical Research Institute, Faculty of Health, University of Newcastle, Callaghan, New South Wales, Australia
| | - Maria Bowman
- Mothers and Babies Research Centre, Hunter Medical Research Institute, Faculty of Health, University of Newcastle, Callaghan, New South Wales, Australia
| | - Elysia Poggi Davis
- Department of Psychology, University of Denver, Denver, Colorado
- Department of Psychiatry, University of California, Irvine, Irvine, California
| |
Collapse
|
14
|
Hennessy T, Bowman M, Soh L, Kurup R, Schultz C, Patel S, Hillis G. The Low Dose Colchicine After Myocardial Infarction (LoDoCo-MI) Study: A Pilot Randomised Placebo Controlled Trial of Colchicine Following Acute Myocardial Infarction. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
15
|
Li Z, Wang AY, Bowman M, Hammarberg K, Farquhar C, Johnson L, Safi N, Sullivan EA. ICSI does not increase the cumulative live birth rate in non-male factor infertility. Hum Reprod 2018; 33:1322-1330. [DOI: 10.1093/humrep/dey118] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 05/14/2018] [Indexed: 11/14/2022] Open
Affiliation(s)
- Z Li
- Sydney Medical School, The University of Sydney, Sydney NSW, Australia
- Australian Centre for Public and Population Health Research, Faculty of Health, University of Technology Sydney, Sydney NSW, Australia
| | - A Y Wang
- Australian Centre for Public and Population Health Research, Faculty of Health, University of Technology Sydney, Sydney NSW, Australia
| | - M Bowman
- Sydney Medical School, The University of Sydney, Sydney NSW, Australia
| | - K Hammarberg
- Victorian Assisted Reproductive Treatment Authority, Melbourne Vic, Australia
- School of Public Health and Preventive Medicine, Monash University, Melbourne Vic, Australia
| | - C Farquhar
- Department of Obstetrics and Gynaecology, University of Auckland, Auckland, New Zealand
| | - L Johnson
- Victorian Assisted Reproductive Treatment Authority, Melbourne Vic, Australia
| | - N Safi
- Australian Centre for Public and Population Health Research, Faculty of Health, University of Technology Sydney, Sydney NSW, Australia
| | - E A Sullivan
- Australian Centre for Public and Population Health Research, Faculty of Health, University of Technology Sydney, Sydney NSW, Australia
| |
Collapse
|
16
|
Bowman M, Rimmer E, Houston DS, Israels SJ, James P. Discordant von Willebrand factor (VWF) activity in patients with VWF
p.Gly1324Ser confirmed in vitro. Haemophilia 2018; 24:e57-e59. [DOI: 10.1111/hae.13401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/14/2017] [Indexed: 11/29/2022]
Affiliation(s)
- M. Bowman
- Department of Medicine; Queen's University; Kingston ON Canada
| | - E. Rimmer
- Department of Internal Medicine; University of Manitoba; Winnipeg MB Canada
- Department of Haematology and Medical Oncology; CancerCare Manitoba Winnipeg MB Canada
| | - D. S. Houston
- Department of Internal Medicine; University of Manitoba; Winnipeg MB Canada
- Department of Haematology and Medical Oncology; CancerCare Manitoba Winnipeg MB Canada
| | - S. J. Israels
- Department of Pediatrics and Child Health; University of Manitoba; Winnipeg MB Canada
| | - P. James
- Department of Medicine; Queen's University; Kingston ON Canada
| |
Collapse
|
17
|
Young JE, Grabell J, Tuttle A, Bowman M, Hopman WM, Good D, Rydz N, Mahlangu JN, James PD. Evaluation of the self-administered bleeding assessment tool (Self-BAT) in haemophilia carriers and correlations with quality of life. Haemophilia 2017; 23:e536-e538. [DOI: 10.1111/hae.13354] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2017] [Indexed: 11/28/2022]
Affiliation(s)
- J. E. Young
- Department of Pathology and Molecular Medicine; Queen's University; Kingston ON Canada
| | - J. Grabell
- Department of Medicine; Queen's University; Kingston ON Canada
| | - A. Tuttle
- Department of Medicine; Queen's University; Kingston ON Canada
| | - M. Bowman
- Department of Medicine; Queen's University; Kingston ON Canada
| | - W. M. Hopman
- Department of Public Health Sciences; Queen's University; Kingston ON Canada
| | - D. Good
- Department of Pathology and Molecular Medicine; Queen's University; Kingston ON Canada
| | - N. Rydz
- Department of Medicine; University of Calgary; Calgary AB Canada
| | - J. N. Mahlangu
- Faculty of Health Sciences; Department of Molecular Medicine and Haematology; School of Pathology; University of Witwatersrand and the NHLS; Johannesburg South Africa
| | - P. D. James
- Department of Pathology and Molecular Medicine; Queen's University; Kingston ON Canada
- Department of Medicine; Queen's University; Kingston ON Canada
| |
Collapse
|
18
|
Bowman M. The transition to self-regulated learning for first-year dental students: threshold concepts. Eur J Dent Educ 2017; 21:142-150. [PMID: 26991674 DOI: 10.1111/eje.12193] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/07/2016] [Indexed: 06/05/2023]
Abstract
Research shows that when students arrive at university they are often not prepared for independent learning. New students enter a period of transition during their first year, which is often characterised by emotional destabilisation, as they move towards becoming more self-regulating in their new learning environment. In this small-scale qualitative study, data from an in-depth pair interview were triangulated with data from a questionnaire, to explore participants' experiences of self-regulated learning in the first year of a Dental Surgery course. Five threshold concepts relating to learning in transition emerged from the analysis of the data. These concepts were as follows: learning how to learn using a range of self-chosen sources instead of a single textbook, learning how to organise incoming information without guidance, distinguishing between main ideas and detail during revision, coping with a heavy workload, and knowing what to expect from examinations and coursework. Strong emotions (feeling confused, overwhelmed and scared) were associated with negotiating these threshold concepts. However, the study illustrates how the participants adopted new cognitive and metacognitive strategies to become more self-regulating over time. The findings of the study suggest that lecturers, tutors, study advisers and peers all have an important role to play in explicitly guiding first-year students as they grapple with troublesome threshold concepts relating to self-regulated learning. Furthermore, structural changes to the content-heavy, lecture-based curricula often associated with first-year Medical and Dental courses would help ease students' transition to independent learning, which may make an impact on student attainment.
Collapse
Affiliation(s)
- M Bowman
- School of Dentistry, University of Leeds, Leeds, UK
| |
Collapse
|
19
|
Gallen C, Drage D, Eaglesham G, Grant S, Bowman M, Mueller JF. Australia-wide assessment of perfluoroalkyl substances (PFASs) in landfill leachates. J Hazard Mater 2017; 331:132-141. [PMID: 28254660 DOI: 10.1016/j.jhazmat.2017.02.006] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 02/03/2017] [Accepted: 02/05/2017] [Indexed: 06/06/2023]
Abstract
Leachate from 27 landfills was analysed for nine perfluoroalkyl substances (PFASs). Five PFASs were detected ubiquitously, with perfluorohexanoate (PFHxA) the predominant PFAS (mean 1700ng/L; range 73-25,000ng/L). Despite the complexity of landfill-specific factors, some general trends in PFAS concentrations were observed. Mean concentrations of eight PFASs were higher in operating landfills (or landfill cells) accepting primarily municipal waste, compared to closed municipal landfills. Landfills accepting primarily construction and demolition wastes produced leachate that had higher mean PFAS concentrations than municipal landfills. Younger landfills appeared to have a higher burden of waste containing PFASs (or their precursors), as significant relationships (p<0.05) were observed between selected PFAS concentrations and landfill age. Increasing pH and total organic carbon (TOC) in leachate were associated with increased concentrations of several PFASs. Eight landfills discharged leachate to wastewater treatment plants (WWTPs). Estimated masses of PFASs discharged reached a maximum of 62g annually (PFHxA), with a national estimate reaching 31kg (PFHxA) annually. The practise of treating leachate at WWTPs allows redistribution of PFASs between the solid and liquid waste streams, although the contribution of leachate to the total load of PFASs entering WWTPs is minor compared to domestic waste water sources.
Collapse
Affiliation(s)
- C Gallen
- Queensland Alliance for Environmental Health Sciences, The University of Queensland, 39 Kessels Road, Coopers Plains, Qld 4108, Australia.
| | - D Drage
- Queensland Alliance for Environmental Health Sciences, The University of Queensland, 39 Kessels Road, Coopers Plains, Qld 4108, Australia; School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston B15 2TT, UK
| | - G Eaglesham
- Queensland Alliance for Environmental Health Sciences, The University of Queensland, 39 Kessels Road, Coopers Plains, Qld 4108, Australia
| | - S Grant
- Queensland Alliance for Environmental Health Sciences, The University of Queensland, 39 Kessels Road, Coopers Plains, Qld 4108, Australia
| | - M Bowman
- Formerly the Australian Government Department of the Environment, John Gorton Building, Parkes ACT 2600, Australia
| | - J F Mueller
- Queensland Alliance for Environmental Health Sciences, The University of Queensland, 39 Kessels Road, Coopers Plains, Qld 4108, Australia
| |
Collapse
|
20
|
Pan X, Bowman M, Scott RJ, Fitter J, Smith R, Zakar T. Promoter Methylation Pattern Controls Corticotropin Releasing Hormone Gene Activity in Human Trophoblasts. PLoS One 2017; 12:e0170671. [PMID: 28151936 PMCID: PMC5289476 DOI: 10.1371/journal.pone.0170671] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 01/09/2017] [Indexed: 02/03/2023] Open
Abstract
Placental CRH production increases with advancing pregnancy in women and its course predicts gestational length. We hypothesized that CRH gene expression in the placenta is epigenetically controlled setting gestational trajectories characteristic of normal and pathological pregnancies. Here we determined histone modification and DNA methylation levels and DNA methylation patterns at the CRH promoter in primary trophoblast cultures by chromatin immunoprecipitation combined with clonal bisulfite sequencing and identified the transcriptionally active epialleles that associate with particular histone modifications and transcription factors during syncytialisation and cAMP-stimulation. CRH gene expression increased during syncytial differentiation and cAMP stimulation, which was associated with increased activating and decreased repressive histone modification levels at the promoter. DNA methylation levels remained unchanged. The nine CpGs of the CRH proximal promoter were partially and allele-independently methylated displaying many (>100) epialleles. RNA-polymerase-II (Pol-II) bound only to three particular epialleles in cAMP-stimulated cells, while phospho-cAMP response element-binding protein (pCREB) bound to only one epiallele, which was different from those selected by Pol-II. Binding of TATA-binding protein increased during syncytial differentiation preferentially at epialleles compatible with Pol-II and pCREB binding. Histone-3 acetylation was detected only at epialleles targeted by Pol-II and pCREB, while gene activating histone-4 acetylation and histone-3-lysine-4 trimethylation occurred at CRH epialleles not associated with Pol-II or pCREB. The suppressive histone-3-lysine-27 trimethyl and-lysine-9 trimethyl modifications showed little or no epiallele preference. The epiallele selectivity of activating histone modifications and transcription factor binding demonstrates the epigenetic and functional diversity of the CRH gene in trophoblasts, which is controlled predominantly by the patterns, not the overall extent, of promoter methylation. We propose that conditions impacting on epiallele distribution influence the number of transcriptionally active CRH gene copies in the trophoblast cell population determining the gestational trajectory of placental CRH production in normal and pathological pregnancies.
Collapse
Affiliation(s)
- Xin Pan
- Mothers and Babies Research Centre, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- Priority Research Centre for Reproductive Science, Faculty of Health and Medicine, The University of Newcastle, Callaghan, NSW, Australia
| | - Maria Bowman
- Mothers and Babies Research Centre, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Rodney J. Scott
- Priority Research Centre for Reproductive Science, Faculty of Health and Medicine, The University of Newcastle, Callaghan, NSW, Australia
- Molecular Medicine, Hunter Area Pathology Service, New Lambton Heights, NSW, Australia
| | - John Fitter
- Mothers and Babies Research Centre, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- Priority Research Centre for Reproductive Science, Faculty of Health and Medicine, The University of Newcastle, Callaghan, NSW, Australia
| | - Roger Smith
- Mothers and Babies Research Centre, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- Priority Research Centre for Reproductive Science, Faculty of Health and Medicine, The University of Newcastle, Callaghan, NSW, Australia
- John Hunter Hospital, New Lambton Heights, NSW, Australia
| | - Tamas Zakar
- Mothers and Babies Research Centre, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- Priority Research Centre for Reproductive Science, Faculty of Health and Medicine, The University of Newcastle, Callaghan, NSW, Australia
- John Hunter Hospital, New Lambton Heights, NSW, Australia
| |
Collapse
|
21
|
Stirrat LI, O'Reilly JR, Barr SM, Andrew R, Riley SC, Howie AF, Bowman M, Smith R, Lewis JG, Denison FC, Forbes S, Seckl JR, Walker BR, Norman JE, Reynolds RM. Decreased maternal hypothalamic-pituitary-adrenal axis activity in very severely obese pregnancy: Associations with birthweight and gestation at delivery. Psychoneuroendocrinology 2016; 63:135-43. [PMID: 26444587 DOI: 10.1016/j.psyneuen.2015.09.019] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 08/27/2015] [Accepted: 09/18/2015] [Indexed: 02/08/2023]
Abstract
BACKGROUND The maternal hypothalamic-pituitary-adrenal-axis (HPAA) undergoes dramatic activation during pregnancy. Increased cortisol and corticotrophin-releasing-hormone (CRH) associate with low birthweight and preterm labor. In non-pregnant obesity, the HPAA is activated but circulating cortisol levels are normal or lower than in lean women. We hypothesized that maternal cortisol levels would be lower in obese pregnancy, and would associate with increased fetal size and length of gestation. METHOD Fasting serum cortisol was measured at 16, 28 and 36 weeks gestation and at 3-6 months postpartum in 276 severely obese and 135 lean women. In a subset of obese (n=20) and lean (n=20) we measured CRH, hormones that regulate bioavailable cortisol (corticosteroid-binding-globulin, estradiol, estriol, and progesterone). Urinary glucocorticoid metabolites were measured in pregnant (obese n=6, lean n=5) and non-pregnant (obese n=7, lean n=7) subjects. RESULTS Maternal cortisol and HPAA hormones were lower in obese pregnancy. Total urinary glucocorticoid metabolites increased significantly in lean pregnancy, but not in obese. Lower maternal cortisol in obese tended to be associated with increased birthweight (r=-0.13, p=0.066). In obese, CRH at 28 weeks correlated inversely with gestational length (r=-0.49, p=0.04), and independently predicted gestational length after adjustment for confounding factors (mean decrease in CRH of -0.25 pmol/L (95% CI -0.45 to -0.043 pmol/L) per/day increase in gestation). CONCLUSION In obese pregnancy, lower maternal cortisol without an increase in urinary glucocorticoid clearance may indicate a lesser activation of the HPAA than in lean pregnancy. This may offer a novel mechanism underlying increased birthweight and longer gestation in obese pregnancy.
Collapse
Affiliation(s)
- Laura I Stirrat
- MRC Centre for Reproductive Health, University of Edinburgh, United Kingdom; Tommy's Centre for Maternal and Fetal Health, University of Edinburgh, United Kingdom
| | - James R O'Reilly
- University/BHF Centre for Cardiovascular Science, University of Edinburgh, United Kingdom
| | - Sarah M Barr
- MRC Centre for Reproductive Health, University of Edinburgh, United Kingdom; Tommy's Centre for Maternal and Fetal Health, University of Edinburgh, United Kingdom
| | - Ruth Andrew
- University/BHF Centre for Cardiovascular Science, University of Edinburgh, United Kingdom
| | - Simon C Riley
- MRC Centre for Reproductive Health, University of Edinburgh, United Kingdom; Tommy's Centre for Maternal and Fetal Health, University of Edinburgh, United Kingdom
| | - Alexander F Howie
- MRC Centre for Reproductive Health, University of Edinburgh, United Kingdom
| | - Maria Bowman
- Mothers and Babies Unit, University of Newcastle, Australia
| | - Roger Smith
- Mothers and Babies Unit, University of Newcastle, Australia
| | - John G Lewis
- Canterbury Health Laboratories, Christchurch, New Zealand
| | - Fiona C Denison
- MRC Centre for Reproductive Health, University of Edinburgh, United Kingdom; Tommy's Centre for Maternal and Fetal Health, University of Edinburgh, United Kingdom
| | - Shareen Forbes
- Tommy's Centre for Maternal and Fetal Health, University of Edinburgh, United Kingdom; University/BHF Centre for Cardiovascular Science, University of Edinburgh, United Kingdom
| | - Jonathan R Seckl
- University/BHF Centre for Cardiovascular Science, University of Edinburgh, United Kingdom
| | - Brian R Walker
- Tommy's Centre for Maternal and Fetal Health, University of Edinburgh, United Kingdom; University/BHF Centre for Cardiovascular Science, University of Edinburgh, United Kingdom
| | - Jane E Norman
- MRC Centre for Reproductive Health, University of Edinburgh, United Kingdom; Tommy's Centre for Maternal and Fetal Health, University of Edinburgh, United Kingdom
| | - Rebecca M Reynolds
- MRC Centre for Reproductive Health, University of Edinburgh, United Kingdom; Tommy's Centre for Maternal and Fetal Health, University of Edinburgh, United Kingdom; University/BHF Centre for Cardiovascular Science, University of Edinburgh, United Kingdom.
| |
Collapse
|
22
|
Pan X, Bowman M, Scott RJ, Fitter J, Nicholson RC, Smith R, Zakar T. Methylation of the Corticotropin Releasing Hormone Gene Promoter in BeWo Cells: Relationship to Gene Activity. Int J Endocrinol 2015; 2015:861302. [PMID: 26457081 PMCID: PMC4589633 DOI: 10.1155/2015/861302] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 08/21/2015] [Accepted: 09/01/2015] [Indexed: 02/07/2023] Open
Abstract
Corticotropin releasing hormone (CRH) production by the human placenta increases exponentially as pregnancy advances, and the rate of increase predicts gestational length. CRH gene expression is regulated by cAMP in trophoblasts through a cyclic AMP-response element (CRE), which changes its transcription factor binding properties upon methylation. Here we determined whether methylation of the CRH proximal promoter controls basal and cAMP-stimulated CRH expression in BeWo cells, a well-characterized trophoblastic cell line. We treated the cells with 8-Br-cAMP and the DNA methyltransferase inhibitor 5-aza-2' deoxycytidine (5-AZA-dC) and determined the effects on CRH mRNA level and promoter methylation. Clonal bisulfite sequencing showed partial and allele independent methylation of CpGs in the CRH promoter. CRH mRNA expression and the methylation of a subset of CpGs (including CpG2 in the CRE) increased spontaneously during culture. 8-Br-cAMP stimulated CRH expression without affecting the increase in methylation. 5-AZA-dC decreased methylation and augmented 8-Br-cAMP-stimulated CRH expression, but it blocked the spontaneous increase of CRH mRNA level. We conclude that the CRH promoter is a dynamically and intermediately methylated genomic region in BeWo cells. Promoter methylation did not inhibit CRH gene expression under the conditions employed; rather it determined the contribution of alternative cAMP-independent pathways and cAMP-independent mechanisms to CRH expression control.
Collapse
Affiliation(s)
- Xin Pan
- Mothers and Babies Research Centre, Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia
- Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW 2308, Australia
- Department of Obstetrics and Gynaecology, Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Maria Bowman
- Mothers and Babies Research Centre, Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia
| | - Rodney J. Scott
- Mothers and Babies Research Centre, Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia
- Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW 2308, Australia
- Molecular Medicine, Hunter Area Pathology Service, New Lambton Heights, NSW 2310, Australia
| | - John Fitter
- Mothers and Babies Research Centre, Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia
- Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Richard C. Nicholson
- Mothers and Babies Research Centre, Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia
- John Hunter Hospital, New Lambton Heights, NSW 2310, Australia
| | - Roger Smith
- Mothers and Babies Research Centre, Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia
- Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW 2308, Australia
- John Hunter Hospital, New Lambton Heights, NSW 2310, Australia
| | - Tamas Zakar
- Mothers and Babies Research Centre, Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia
- Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW 2308, Australia
- John Hunter Hospital, New Lambton Heights, NSW 2310, Australia
- *Tamas Zakar:
| |
Collapse
|
23
|
Bowman M. Generic Pharmaceutical Association (GPHA) - 2015 Annual Meeting (February 9-11, 2015 - Miami Beach, Florida, USA). Drugs Today (Barc) 2015; 51:153-6. [DOI: 10.1358/dot.2015.51.2.2297435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
24
|
Elbatarny M, Mollah S, Grabell J, Bae S, Deforest M, Tuttle A, Hopman W, Clark DS, Mauer AC, Bowman M, Riddel J, Christopherson PA, Montgomery RR, Rand ML, Coller B, James PD. Normal range of bleeding scores for the ISTH-BAT: adult and pediatric data from the merging project. Haemophilia 2014; 20:831-5. [PMID: 25196510 DOI: 10.1111/hae.12503] [Citation(s) in RCA: 191] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/18/2014] [Indexed: 10/24/2022]
Abstract
Bleeding Assessment Tools (BATs) have been developed to aid in the standardized evaluation of bleeding symptoms. The Vicenza Bleeding Questionnaire (BQ), published in 2005, established a common framework and scoring key that has undergone subsequent modification over the years, culminating in the publication of the ISTH-BAT in 2010. Understanding the normal range of bleeding scores is critical when assessing the utility of a BAT. Within the context of The Merging Project, a bioinformatics system was created to facilitate the merging of legacy data derived from four different (but all Vicenza-based) BATs; the MCMDM1-VWD BQ, the Condensed MCMDM-1VWD BQ, the Pediatric Bleeding Questionnaire and the ISTH-BAT. Data from 1040 normal adults and 328 children were included in the final analysis, which showed that the normal range is 0-3 for adult males, 0-5 for adult females and 0-2 in children for both males and females. Therefore, the cut-off for a positive or abnormal BS is ≥4 in adult males, ≥6 in adult females and ≥3 in children. This information can now be used to objectively assess bleeding symptoms as normal or abnormal in future studies.
Collapse
Affiliation(s)
- M Elbatarny
- Department of Medicine, Queen's University, Kingston, Canada
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Abstract
The 16th annual International Generic Pharmaceutical Alliance (IGPA) conference brought together approximately 200 attendees representing 35 nations. The IGPA consists of generic industry associations from the United States (GPhA), Canada (CGPA), Europe (EGA), Jordan (JAPM), South Africa (NAPM), and Japan (JGA), in addition to observer member organizations from Brazil (PróGenéricos), Mexico (AMEGI) and Taiwan (TGPA). Conference attendees listened to industry experts and participating organization representatives present some of the key issues affecting the generic industry. Nick Haggar (President, EGA) welcomed attendees by highlighting the impact that IGPA and its member alliance associations have on healthcare around the world. The 2-day conference reviewed the trends in 11 different markets, the ongoing trade negotiations between numerous countries and the role generic associations in their respective countries can have in increasing patient access to affordable high-quality medicines.
Collapse
Affiliation(s)
- M Bowman
- Thomson Reuters, Portland, Maine, USA.
| |
Collapse
|
26
|
Rapson D, Bowman M, Lillicrap D, James P. DIAGNOSTIC EFFICACY OF SYSTEMATIC INVESTIGATION OF NON-VON WILLEBRAND BLEEDERS: RESULTS OF A PROSPECTIVE STUDY. J Thromb Haemost 2014. [DOI: 10.1111/j.1538-7836.2007.tb01975.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
27
|
Phang K, Bowman M, Phillips A, Windsor J. Review of thoracic duct anatomical variations and clinical implications. Clin Anat 2013; 27:637-44. [DOI: 10.1002/ca.22337] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2013] [Revised: 09/30/2013] [Accepted: 09/30/2013] [Indexed: 11/06/2022]
Affiliation(s)
- K. Phang
- Department of Surgery; School of Medicine; Faculty of Medical and Health Sciences; University of Auckland; Auckland New Zealand
| | - M. Bowman
- Department of Surgery; School of Medicine; Faculty of Medical and Health Sciences; University of Auckland; Auckland New Zealand
| | - A. Phillips
- Department of Surgery; School of Medicine; Faculty of Medical and Health Sciences; University of Auckland; Auckland New Zealand
- School of Biological Science; University of Auckland; Auckland New Zealand
| | - J. Windsor
- Department of Surgery; School of Medicine; Faculty of Medical and Health Sciences; University of Auckland; Auckland New Zealand
| |
Collapse
|
28
|
Marren A, Tan Y, de Vries B, Livingstone M, Bowman M. Does the degree and speed of blastocoele re-expansion after cryopreservation and warming correlate with pregnancy rates: a retrospective cohort study. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
29
|
McArthur S, Emmett K, Traversa M, Bowman M. The influence of FSH dose on embryo development and aneuploidy rates. Data from CGH cycles at Genea. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.1351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
30
|
Walker LAS, Berard JA, Atkins HL, Bowman M, Lee H, Freedman MS. Cognitive change and neuroimaging following immunoablative therapy and hematopoietic stem cell transplantation in multiple sclerosis: A pilot study. Mult Scler Relat Disord 2013; 3:129-35. [PMID: 25877984 DOI: 10.1016/j.msard.2013.05.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 05/01/2013] [Accepted: 05/02/2013] [Indexed: 11/30/2022]
Abstract
BACKGROUND Individuals with MS undergoing immunoablative therapy and hematopoietic stem cell transplantation (HSCT) show substantial decrease in brain volume over 2.4 months, presumably from chemotoxic effects, although other mechanisms have also been postulated. OBJECTIVE We examined whether volume loss was accompanied by a concomitant decrease in cognition. White and gray matter volumes, and the effect of stem cell dosage were considered. METHODS Seven individuals with rapidly progressing MS and poor prognosis underwent high dose immunosuppression and autologous HSCT. Neuropsychological testing and MRI scans were performed at baseline, 2 and 24 months post-procedure. RESULTS Cognitive impairment was noted at all times in most participants. Median decline of 1.39% in total brain volume was noted 2 months post-HSCT. By 24 months a further decline of 1.65% was noted. At 2 months significant decline was observed for areas of executive functioning. At 24 months almost no significant declines were noted. No significant correlations were found between cognitive decline and change in imaging variables or stem cell dosage. CONCLUSIONS Cognition changed in the early period following treatment but with little apparent relationship to volume changes. With temporal distance from the HSCT procedure, cognition returned to baseline levels. With the caution of a very small sample, preliminary results suggest that immunoablation and HSCT may have no lasting deleterious effects on cognition.
Collapse
Affiliation(s)
- L A S Walker
- Neuropsychology Service, The Ottawa Hospital, Ottawa, Canada; The Ottawa Hospital Research Institute, Ottawa, Canada; University of Ottawa, Faculty of Medicine, Ottawa, Canada; University of Ottawa, School of Psychology, Ottawa, Canada.
| | - J A Berard
- The Ottawa Hospital Research Institute, Ottawa, Canada; University of Ottawa, School of Psychology, Ottawa, Canada.
| | - H L Atkins
- The Ottawa Hospital Research Institute, Ottawa, Canada; University of Ottawa, Faculty of Medicine, Ottawa, Canada.
| | - M Bowman
- The Ottawa Hospital Research Institute, Ottawa, Canada.
| | - H Lee
- Montreal Neurological Institute and Hospital, Montreal, Canada.
| | - M S Freedman
- The Ottawa Hospital Research Institute, Ottawa, Canada; University of Ottawa, Faculty of Medicine, Ottawa, Canada.
| |
Collapse
|
31
|
Bowman M, Tuttle A, Notley C, Brown C, Tinlin S, Deforest M, Leggo J, Blanchette VS, Lillicrap D, James P. The genetics of Canadian type 3 von Willebrand disease: further evidence for co-dominant inheritance of mutant alleles. J Thromb Haemost 2013; 11:512-20. [PMID: 23311757 PMCID: PMC3904644 DOI: 10.1111/jth.12130] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Accepted: 12/31/2012] [Indexed: 01/28/2023]
Abstract
BACKGROUND Type 3 von Willebrand disease (VWD) is the most severe form of the disease and is classically inherited in an autosomal recessive fashion. OBJECTIVES The aim of the current study was to investigate the molecular pathogenesis of a Canadian cohort of type 3 VWD patients. PATIENTS AND METHODS Thirty-four families comprised of 100 individuals were investigated. Phenotypic data, including bleeding scores (BS), von Willebrand factor (VWF) laboratory values and anti-VWF inhibitor status were included as well as sequence analysis. RESULTS We identified 31 different mutations (20 novel): 8 frameshift, 5 splice site, 9 nonsense, 1 gene conversion, 6 missense and 2 partial gene deletion mutations. The majority of mutations identified were in the propeptide (42%); index cases (IC) with these mutations exhibited more severe bleeding (BS = 22) than those with mutations elsewhere in VWF (BS = 13). Sixty-two out of 68 (91%) mutant alleles were identified. Twenty-nine IC (85%) had a VWF null genotype identified; 17 homozygous, 12 compound heterozygous. In five IC (15%), two mutant VWF alleles were not identified to explain the type 3 VWD phenotype. In four ICs only one mutant VWF allele was identified and in one IC no mutant VWF alleles were identified. CONCLUSIONS We have investigated the molecular pathogenesis of a Canadian cohort of type 3 VWD patients. Obligate carriers are not phenotypically silent in the Canadian population; 48% have been diagnosed with type 1 VWD. In approximately 50% of families in this study the inheritance pattern for type 3 VWD is co-dominant and not recessive.
Collapse
Affiliation(s)
- M Bowman
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON, Canada
| | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Seluzicki C, Mackenzie E, Barg F, Leed R, Bowman M, Mao J. P05.63. Perspectives of breast cancer survivors about participating in an acupuncture clinical trial for hot flashes: a qualitative study. Altern Ther Health Med 2012. [PMCID: PMC3373847 DOI: 10.1186/1472-6882-12-s1-p423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
33
|
Bowman M, Edwards E, Goodwin A, Kirk J. Bowel cancer in a 17 year old: what could be the reason? Hered Cancer Clin Pract 2012. [PMCID: PMC3326732 DOI: 10.1186/1897-4287-10-s2-a69] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- M Bowman
- Familial Cancer Service, Westmead Hospital, Australia
| | - E Edwards
- Familial Cancer Service, Westmead Hospital, Australia
| | - A Goodwin
- Familial Cancer Service, Westmead Hospital, Australia
| | - J Kirk
- Familial Cancer Service, Westmead Hospital, Australia
| |
Collapse
|
34
|
Edwards E, Bowman M, Walsh M, Kirk J. Loss of MSH6 and PMS2 immunohistochemical staining in tumour tissue of two individuals with a germline PMS2 mutation. Hered Cancer Clin Pract 2012. [PMCID: PMC3327106 DOI: 10.1186/1897-4287-10-s2-a76] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
|
35
|
Karasu Y, Dilbaz B, Demir B, Dilbaz S, Secilmis Kerimoglu O, Ercan CM, Keskin U, Korkmaz C, Duru NK, Ergun A, de Zuniga I, Horton M, Oubina A, Scotti L, Abramovich D, Pascuali N, Tesone M, Parborell F, Bouzas N, Yang XH, Chen SL, Chen X, Ye DS, Zheng HY, Nyboe Andersen A, Lauritsen MP, Thuesen LL, Khodadadi M, Shivabasavaiah S, Mozafari R, Ansari Z, Hamdine O, Broekmans F, Eijkemans MJC, Cohlen BJ, Verhoeff A, van Dop PA, Bernardus RE, Lambalk CB, Oosterhuis GJE, Holleboom C, van den Dool-Maasland GC, Verburg HJ, van der Heijden PFM, Blankhart A, Fauser BCJM, Laven JSE, Macklon NS, Agudo D, Lopez C, Alonso M, Huguet E, Bronet F, Garcia-Velasco JA, Requena A, Gonzalez Comadran M, Checa MA, Duran M, Fabregues F, Carreras R, Ersahin A, Kahraman S, Kavrut M, Gorgen B, Acet M, Dokuzeylul N, Aybar F, Lim SY, Park JC, Bae JG, Kim JI, Rhee JH, Mahran A, Abdelmeged A, El-Adawy A, Eissa M, Darne J, Shaw RW, Amer SA, Dai A, Yan G, He Q, Hu Y, Sun H, Ferrero H, Gomez R, Garcia-Pascual CM, Simon C, Gaytan F, Pellicer A, Garcia Pascual CM, Zimmermann RC, Ferrero H, Simon C, Pellicer A, Gomez R, Madani T, Mohammadi Yeganeh L, Khodabakhshi SH, Akhoond MR, Hasani F, Monzo C, Haouzi D, Assou S, Dechaud H, Hamamah S, Amer S, Mahran M, Eissa M, Darne J, Shaw R, Lan V, Nhu G, Tuong H, Mahmoud Youssef MA, Aboulfoutouh I, Al-inany H, Van Der Veen F, Van Wely M, Zhang Q, Fang T, Wu S, Zhang L, Wang B, Li X, Yan G, Sun H, Hu Y, He Q, Ding L, Day A, Wang B, Yan G, Hu Y, Sun H, Zhang L, Fang T, Zhang Q, Wu S, Yan G, Sun H, Hu Y, Fulford B, Boivin J, Alanbay I, Ercan CM, Sakinci M, Coksuer H, Ozturk M, Tapan S, Chung CK, Chung Y, Seo S, Aksoy S, Yakin K, Caliskan S, Salar Z, Ata B, Urman B, Devroey P, Pellicer A, Nyboe Andersen A, Arce JC, Harrison K, Irving J, Osborn J, Harrison M, Fusi F, Arnoldi M, Cappato M, Galbignani E, Galimberti A, Zanga L, Frigerio L, Taghavi SA, Ashrafi M, Karimian L, Mehdizadeh M, Joghataie M, Aflatoonian R, Xu B, Cui YG, Gao LL, Diao FY, Li M, Liu XQ, Liu JY, Jiang F, Li M, Cui YG, Diao FY, Liu JY, Jee BC, Yi G, Kim JY, Suh CS, Kim SH, Liu S, Cui YG, Liu JY, Cai LB, Liu JJ, Ma X, Geenen E, Bots RSGM, Smeenk JMJ, Chang E, Lee W, Seok H, Kim Y, Han J, Yoon T, Lazaros L, Xita N, Zikopoulos K, Makrydimas G, Kaponis A, Sofikitis N, Stefos T, Hatzi E, Georgiou I, Atilgan R, Kumbak B, Sahin L, Ozkan ZS, Simsek M, Sapmaz E, Karacan M, Alwaeely FA, Cebi Z, Berberoglugil M, Ulug M, Camlibel T, Kavrut M, Kahraman S, Ersahin A, Acet M, Yelke H, Kamalak Z, Carlioglu A, Akdeniz D, Uysal S, Inegol Gumus I, Ozturk Turhan N, Regan S, Yovich J, Stanger J, Almahbobi G, Kara M, Aydin T, Turktekin N, Youssef M, Aboulfoutouh I, Al-Inany H, van der Veen F, van Wely M, Hart R, Doherty D, Frederiksen H, Keelan J, Pennell C, Newnham J, Skakkebaek N, Main K, Salem HT, Ismail AA, Viola M, Siebert TI, Steyn DW, Kruger TF, Robin G, Dewailly D, Thomas P, Leroy M, Lefebvre C, soudan B, Pigny P, Decanter C, ElPrince M, Wang F, Zhu Y, Huang H, Valdez Morales F, Vital Reyes V, Mendoza Rodriguez A, Gamboa Dominguez A, Cerbon M, Aizpurua J, Ramos B, Luehr B, Moragues I, Rogel S, Cil AP, Guler ZB, Kisa U, Albu A, Radian S, Grigorescu F, Albu D, Fica S, Al Boghdady L, Ghanem ME, Hassan M, Helal AS, Ozdogan S, Ozdegirmenci O, Dilbaz S, Demir B, Cinar O, Dilbaz B, Goktolga U, Seeber B, Tsybulyak I, Bottcher B, Grubinger T, Czech T, Wildt L, Wojcik J, Howles CM, Destenaves B, Arriagada P, Tavmergen E, Sahin G, Akdogan A, Levi R, Goker ENT, Thuesen LL, Loft A, Smitz J, Nyboe Andersen A, Ricciardi L, Di Florio C, Busacca M, Gagliano D, Immediata V, Selvaggi L, Romualdi D, Guido M, Bouhanna P, Salama S, Kamoud Z, Torre A, Paillusson B, Fuchs F, Bailly M, Wainer R, Tagliaferri V, Busacca M, Gagliano D, Di Florio C, Tartaglia C, Cirella E, Romualdi D, Guido M, Aflatoonian A, Eftekhar M, Mohammadian F, Yousefnejad F, De Cicco S, Gagliano D, Busacca M, Di Florio C, Immediata V, Campagna G, Romualdi D, Guido M, Depalo R, Lippolis C, Vacca M, Nardelli C, Selvaggi L, Cavallini A, Panic T, Mitulovic G, Franz M, Sator K, Tschugguel W, Pietrowski D, Hildebrandt T, Cupisti S, Giltay EJ, Gooren LJ, Oppelt PG, Hackl J, Reissmann C, Schulze C, Heusinger K, Attig M, Hoffmann I, Beckmann MW, Dittrich R, Mueller A, Sharma S, Singh S, Chakravarty A, Sarkar A, Rajani S, Chakravarty BN, Dilbaz S, Ozturk E, Ozdegirmenci O, Demir B, Isikoglu S, Kul S, Dilbaz B, Cinar O, Goktolga U, Eftekhar M, Aflatoonian A, Mohammadian F, Broekmans F, Hillensjo T, Witjes H, Elbers J, Mannaerts B, Gordon K, Krasnopolskaya K, Galaktionova A, Gorskaya O, Kabanova D, Venturella R, Morelli M, Mocciaro R, Capasso S, Cappiello F, Zullo F, Monterde M, Gomez R, Marzal A, Vega O, Rubio-Rubio JM, Diaz-Garcia C, Pellicer A, Gordon K, Kolibianakis E, Griesinger G, Yding Andersen C, Witjes H, Mannaerts B, Ocal P, Guralp O, Aydogan B, Irez T, Cetin M, Senol H, Erol N, Yding Andersen C, Kolibianakis E, Devroey P, Witjes H, Mannaerts B, Gordon K, Griesinger G, Rombauts L, Van Kuijk J, Mannaerts B, Montagut J, Nogueira D, Porcu G, Chomier M, Giorgetti C, Nicollet B, Degoy J, Lehert P, Alviggi C, De Rosa P, Vallone R, Picarelli S, Coppola M, Conforti A, Strina I, Di Carlo C, De Placido G, Hackl J, Cupisti S, Haeberle L, Schulze C, Hildebrandt T, Oppelt PG, Reissmann C, Heusinger K, Attig M, Hoffmann I, Dittrich R, Beckmann MW, Mueller A, Akdogan A, Demirtas O, Sahin G, Tavmergen E, Goker ENT, Fatemi H, Shapiro BS, Griesinger G, Witjes H, Gordon K, Mannaerts BM, Chimote MN, Mehta BN, Chimote NN, Nath NM, Chimote NM, Karia S, Bonifacio M, Bowman M, McArthur S, Jung J, Cho S, Choi Y, Lee B, Seo S, Lee KH, Kim CH, Kwon SK, Kim SH, Kang BM, Jung KS, Basios G, Trakakis E, Hatziagelaki E, Vaggopoulos V, Tsiavou A, Panagopoulos P, Chrelias C, Kassanos D, Sarhan A, Elsamanoudy A, Harira M, Dogan S, Bozdag G, Esinler I, Polat M, Yarali H. REPRODUCTIVE ENDOCRINOLOGY. Hum Reprod 2012. [DOI: 10.1093/humrep/27.s2.88] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
36
|
Bowman M, Forgie S. During influenza season, which children need an antiviral and which one should I prescribe? Do I need to verify that they have influenza first? Paediatr Child Health 2011; 15:499-501. [PMID: 21966234 DOI: 10.1093/pch/15.8.499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/09/2010] [Indexed: 11/15/2022] Open
Affiliation(s)
- M Bowman
- Department of Pediatrics, University of Alberta, Edmonton, Alberta
| | | |
Collapse
|
37
|
Hodyl NA, Stark MJ, Osei-Kumah A, Bowman M, Gibson P, Clifton VL. Fetal glucocorticoid-regulated pathways are not affected by inhaled corticosteroid use for asthma during pregnancy. Am J Respir Crit Care Med 2010; 183:716-22. [PMID: 20935111 DOI: 10.1164/rccm.201007-1188oc] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Inhaled corticosteroids (ICS) are currently advised for the control of asthma during pregnancy, despite the lack of evidence regarding potential systemic effects on maternal, placental, and fetal systems. OBJECTIVES To determine maternal plasma concentrations of cortisol, estriol, osteocalcin, and corticotropin-releasing hormone in pregnant women with asthma (n = 156) and without asthma (n = 51). METHODS During each trimester of pregnancy, the use and dose of ICS was recorded and blood samples were collected. Ultrasound was performed at 18 and 30 weeks' gestation, and birth weight and fetal sex were recorded at delivery. MEASUREMENTS AND MAIN RESULTS Maternal hormone concentrations were not affected by the presence of asthma; however, they were inhibited by ICS use in a dose-dependent manner. This was dependent on fetal sex: in pregnancies with a female, ICS was inversely associated with maternal cortisol in first trimester and inversely associated with maternal osteocalcin in second and third trimester. When pregnant with a male, no effect of ICS dose was observed on maternal cortisol, estriol, or osteocalcin levels, whereas corticotropin-releasing hormone levels were increased with ICS use only in the first trimester. CONCLUSIONS Maternal glucocorticoid-regulated systems appeared susceptible to ICS only when pregnant with a female. Fetal adrenal function appeared unaffected by ICS in pregnancies of both males and females. This provides clinically important information suggesting that ICS do not exert effects on glucocorticoid-regulated pathways in the fetus, and therefore are unlikely to contribute to adverse effects on fetal growth and development.
Collapse
|
38
|
Bowman M, Hopman WM, Rapson D, Lillicrap D, Silva M, James P. A prospective evaluation of the prevalence of symptomatic von Willebrand disease (VWD) in a pediatric primary care population. Pediatr Blood Cancer 2010; 55:171-3. [PMID: 20213845 DOI: 10.1002/pbc.22429] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The prevalence of von Willebrand disease (VWD) is reported as approximately 1%; however, these estimates were not based on individuals with significant symptoms. Four thousand five hundred ninety-two unselected parents/children were asked: "Does your child have a problem with bleeding/bruising?"; 223 (5%) answered yes, 41 of whom were administered the validated Pediatric Bleeding Questionnaire and had VWF testing. Five were diagnosed with VWD (three type 1, one type 2A, one type 2B). The prevalence of bleeding/bruising in a general pediatric population is 5%; the prevalence of symptomatic VWD at the level of pediatric primary care is at least 1 in 1,000.
Collapse
Affiliation(s)
- M Bowman
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Canada
| | | | | | | | | | | |
Collapse
|
39
|
Biss TT, Blanchette VS, Clark DS, Bowman M, Wakefield CD, Silva M, Lillicrap D, James PD, Rand ML. Quantitation of bleeding symptoms in children with von Willebrand disease: use of a standardized pediatric bleeding questionnaire. J Thromb Haemost 2010; 8:950-6. [PMID: 20136710 DOI: 10.1111/j.1538-7836.2010.03796.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
SUMMARY BACKGROUND Excessive bruising and mucocutaneous bleeding are frequent presenting symptoms in childhood. A detailed bleeding history can distinguish children who may have an inherited bleeding disorder from those who are normal. There is a lack of standardization of such history taking in pediatric practise. OBJECTIVES To assess the performance of a Pediatric Bleeding Questionnaire (PBQ), an adaptation of a standardized adult bleeding questionnaire and score that includes pediatric-specific bleeding symptoms, in a cohort of children with von Willebrand disease (VWD). PATIENTS/METHODS Bleeding scores were determined by interview, for children with a previous diagnosis of VWD and a control group of unaffected siblings. RESULTS Bleeding scores were obtained for 100 children with VWD, median age 10.9 years (range, 0.8-17.8 years), and 21 unaffected siblings. Median bleeding score in children with VWD was 7.0 (range, 0-29) and in the control group was 0 (range, -1-2). Bleeding score varied within and between each VWD type: definite type 1, n = 40, median, 9.0 (range, 2-18); possible type 1, n = 38, median, 2.0 (0-15); type 2, n = 6, median, 14.0 (3-17); and type 3, n = 16, median, 12.0 (4-29). Bleeding scores in affected children correlated with age (Spearman's correlation coefficient, 0.35; P = 0.0004). The most frequent clinically significant bleeding symptoms were surgical bleeding, bleeding after tooth extraction and menorrhagia. Post-circumcision bleeding, cephalohematoma, macroscopic hematuria and umbilical stump bleeding were clinically significant in 32% (of circumcised males), 4%, 4% and 3% of children, respectively. CONCLUSIONS The PBQ provides a standardized quantitation of bleeding severity in children with VWD.
Collapse
Affiliation(s)
- T T Biss
- Division of Haematology/Oncology, The Hospital for Sick Children, Toronto, Ontario M5G 1X8, Canada
| | | | | | | | | | | | | | | | | |
Collapse
|
40
|
|
41
|
Nepstad D, Soares-Filho BS, Merry F, Lima A, Moutinho P, Carter J, Bowman M, Cattaneo A, Rodrigues H, Schwartzman S, McGrath DG, Stickler CM, Lubowski R, Piris-Cabezas P, Rivero S, Alencar A, Almeida O, Stella O. The End of Deforestation in the Brazilian Amazon. Science 2009; 326:1350-1. [PMID: 19965742 DOI: 10.1126/science.1182108] [Citation(s) in RCA: 355] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Daniel Nepstad
- Woods Hole Research Center, Falmouth, MA 02540, USA
- Instituto de Pesquisa Ambiental da Amazonia, Brasília-DF 71.503-505, Brazil
| | | | - Frank Merry
- Woods Hole Research Center, Falmouth, MA 02540, USA
- Instituto de Pesquisa Ambiental da Amazonia, Brasília-DF 71.503-505, Brazil
| | - André Lima
- Instituto de Pesquisa Ambiental da Amazonia, Brasília-DF 71.503-505, Brazil
| | - Paulo Moutinho
- Woods Hole Research Center, Falmouth, MA 02540, USA
- Instituto de Pesquisa Ambiental da Amazonia, Brasília-DF 71.503-505, Brazil
| | - John Carter
- Aliança da Terra, Goiânia, GO 74.670-600, Brazil
| | - Maria Bowman
- Woods Hole Research Center, Falmouth, MA 02540, USA
- Instituto de Pesquisa Ambiental da Amazonia, Brasília-DF 71.503-505, Brazil
| | | | - Hermann Rodrigues
- Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil
| | | | - David G. McGrath
- Woods Hole Research Center, Falmouth, MA 02540, USA
- Instituto de Pesquisa Ambiental da Amazonia, Brasília-DF 71.503-505, Brazil
- University of Florida, Gainesville, FL 32611–7315, USA
| | - Claudia M. Stickler
- Woods Hole Research Center, Falmouth, MA 02540, USA
- Instituto de Pesquisa Ambiental da Amazonia, Brasília-DF 71.503-505, Brazil
- Universidad Rey Juan Carlos, Tulipán s/n, 28933, Móstoles, Spain
| | | | - Pedro Piris-Cabezas
- Environmental Defense Fund, Washington, DC 20009, USA
- Universidade Federal do Pará, 66.075-110, Belém, Pará, Brazil
| | - Sergio Rivero
- University of Florida, Gainesville, FL 32611–7315, USA
| | - Ane Alencar
- Instituto de Pesquisa Ambiental da Amazonia, Brasília-DF 71.503-505, Brazil
- Universidad Rey Juan Carlos, Tulipán s/n, 28933, Móstoles, Spain
| | - Oriana Almeida
- Instituto de Pesquisa Ambiental da Amazonia, Brasília-DF 71.503-505, Brazil
- University of Florida, Gainesville, FL 32611–7315, USA
| | - Osvaldo Stella
- Instituto de Pesquisa Ambiental da Amazonia, Brasília-DF 71.503-505, Brazil
| |
Collapse
|
42
|
Bowman M, Riddel J, Rand ML, Tosetto A, Silva M, James PD. Evaluation of the diagnostic utility for von Willebrand disease of a pediatric bleeding questionnaire. J Thromb Haemost 2009; 7:1418-21. [PMID: 19496919 DOI: 10.1111/j.1538-7836.2009.03499.x] [Citation(s) in RCA: 130] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
43
|
Bowman M, Mundell G, Grabell J, Hopman WM, Rapson D, Lillicrap D, James P. Generation and validation of the Condensed MCMDM-1VWD Bleeding Questionnaire for von Willebrand disease. J Thromb Haemost 2008; 6:2062-6. [PMID: 18983516 DOI: 10.1111/j.1538-7836.2008.03182.x] [Citation(s) in RCA: 163] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Given the challenges involved in obtaining accurate bleeding histories, attempts at standardization have occurred and the value of quantifying hemorrhagic symptoms has been recognized. PATIENTS/METHODS An extensive validated bleeding questionnaire (MCMDM-1VWD) was condensed by eliminating all details that did not directly affect the bleeding score (BS) and the correlation between the two versions was tested. Additionally, the diagnostic utility of the condensed version was prospectively tested. RESULTS Data on 259 individuals who were administered the questionnaire are presented here; 217 being prospectively investigated for von Willebrand disease (VWD) (group 1) and 42 previously known to have type 1, 2 or 3 VWD (group 2). Of the 217 prospectively investigated, 35 had positive BS (> or =4) and 182 had negative scores. Seven individuals (all with positive BS) had laboratory results consistent with type 1 VWD. This results in a sensitivity of 100% and a specificity of 87%. The positive predictive value is 0.20 and the negative predictive value is 1. The correlation between the full MCMDM-1VWD and condensed versions is excellent (Spearman's 0.97, P < 0.001, linear regression r(2) = 96.4). Inter-observer reliability for the condensed version is reasonable (Spearman's 0.72, P < 0.001 and intra-class correlation coefficient 0.805, P < 0.001). There was a significant difference in BS between subtypes of VWD, with type 3 >> type 2 >> type 1 VWD (anova P < 0.001). There is a strong inverse relationship between VWF:Ag level and BS (Spearman's -0.411, P < 0.001). CONCLUSIONS The Condensed MCMDM-1VWD Bleeding Questionnaire is an efficient, effective tool in the evaluation of patients for VWD.
Collapse
Affiliation(s)
- M Bowman
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON, Canada
| | | | | | | | | | | | | |
Collapse
|
44
|
Stakiw J, Bowman M, Hegadorn C, Pruss C, Notley C, Groot E, Lenting PJ, Rapson D, Lillicrap D, James P. The effect of exercise on von Willebrand factor and ADAMTS-13 in individuals with type 1 and type 2B von Willebrand disease. J Thromb Haemost 2008; 6:90-6. [PMID: 17922807 DOI: 10.1111/j.1538-7836.2007.02790.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND The effect of exercise on von Willebrand factor (VWF) and ADAMTS-13 levels in individuals with von Willebrand disease (VWD) has never been reported. OBJECTIVES The aim was to quantify the effect of a standardized exercise protocol on individuals with type 1 and type 2B VWD. PATIENTS/METHODS Thirty individuals from three groups (10 controls, 11 with type 1 VWD and 9 with type 2B VWD) completed the Standard Bruce Protocol Treadmill Test. A bleeding questionnaire was administered and blood tests were performed pre- and immediately postexercise. The groups were well matched for age, gender and body mass index (BMI). RESULTS There was a correlation in all groups between the metabolic equivalents (METS) achieved and the degree of change of VWF and FVIII:C levels (P < 0.002, Pearson's correlation). There was a significant postexercise increase in VWF:Ag, VWF:RCo, FVIII:C and activated VWF levels in both the control group and in the type 2B VWD group, but not in the type 1 VWD group. Specific to the type 2B VWD group was an increase in the percentage of high molecular weight multimers (P = 0.022), a decrease in the mean platelet count compared with the other groups (P < 0.001) and an increase in the ADAMTS-13 level (P = 0.001). CONCLUSIONS There are significant differences in the effects of exercise on individuals with type 1 and type 2B VWD compared with controls. Further clinical studies are necessary to evaluate exercise as a therapeutic option in VWD.
Collapse
Affiliation(s)
- J Stakiw
- Department of Medicine, Queen's University, Kingston, ON, Canada
| | | | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Borel F, Richard S, Pojer F, Jacquamet L, Baiga T, Ramsey JA, Iannello A, Bowman M, Noel JP, Ferrer JL. Design of antibacterial and antimalarial drugs based on the structure of IspE. Acta Crystallogr A 2007. [DOI: 10.1107/s010876730709705x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
46
|
|
47
|
De Boer KA, Henman M, Wood T, Bowman M, Jansen R. AC-018 Cumulative fetal heart pregnancy rate after elective single blastocyst transfer. Reprod Biomed Online 2006. [DOI: 10.1016/s1472-6483(11)60466-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
48
|
Mardi A, Rahimi G, Amani M, Mashoufi M, Kheirkhah M, Ghaffari NM, Pierovi T, Soleimani RJ, Vanlioglu F, Karaman Y, Bingol B, Tavmergen E, Akdogan A, Akman A, Levi R, Tavmergen GEN, Ates U, Seyhan A, Atmaca U, Ortakuz S, Ata B, Akar S, Usta T, Özdemir B, Sidal B, Yoldemir T, Gee A, Sutherland P, Bowman M, Fraser IS, Haydardedeoglu B, Bagis T, Kilicdag EB, Simsek E, Aslan E, Zeyneloglu HB, Kahyaoglu S, Turgay I, Ertas E, Yilmaz B, Var T, Batioglu S, Muftuoglu K, Tekcan C, Naki MM, Uysal A, Güzin K, Yücel N, Kanadikirik F, Kelekci S, Savan K, Kalyoncu S, Gokturk U, Oral H, Mollamahmutoglu L, Ertas IE, Mollamahmutoglu L, Kahveci S, Dogan M, Mollamahmutoglu L, Isik A, Saygili U, Gol M, Koyuncuoglu M, Uslu T, Erten O, Ciftci B, Biri A, Bozkurt N, Karabacak O, Himmetoglu O, Amir JN, Nouri M, Hascalik S, Celik O, Parlakpinar H, Mizrak B, Ozsahin M, Önder C, Gezginc K, Colakoglu M, Demir SC, Cetin MT, Kadayifci O, Güzel AB, Polat I, Yildirim G, Özdemir A, Tekirdag AI, Kizkin S, Engin-Ustun Y, Ustun Y, Ozcan C, Serbest S, Ozisik HI, Ergenoglu M, Goker ENT, Uckuyu A, Ozcimen EE, Nisanoglu O, Onal C, Akgun S, Koc S, Cebi Z, Sönmez S, Yasar L, Küpelioglu L, Bilecan S, Aygün M, Zebitay AG, Dursun P, Ötegen Ü, Bozdag G, Yarali H, Demirci F, Mun S, Eraydin E, Sadik S, Sipahi C, Bayol Ü, Sarikaya S, Garipoglu DE, Delilbasi L, Gursoy R, Engin-Ustun Y, Meydanli MM, Atmaca R, Kafkasli A, Canda MT, Kucuk M, Bagriyanik HA, Ozyurt D, Canda T, Güven MA, Tamsoy S, Kaymak O, Ozkale D, Okyay RE, Neslihanoglu R, Mollamahmutoglu L, Basaran A, Gultekin M, Saygili YE, Esinler I, Bayer U, Gunalp S, Aksu T, Gultekin M, Leventerler H, Taga S, Cetin T, Solmaz S, Dikmen N, Karalök H, Ilter E, Tufekci C, Yilmaz S, Karalök AE, Batur O, Kilicdag E, Haydardedeoglu B, Tarim E, Api M, Gültekin E, Görgen H, Cetin A, Yayla M, Özkilic T, Arikan I, Abali R, Arikan D, Bozkurt S, Demir B, Gunalp S, Erden AC, Özcan J, Yazicioglu F, Demirbas R. Endocrinology and reproductive medicine. Arch Gynecol Obstet 2005. [DOI: 10.1007/bf02954773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
49
|
Anaya A, Bowman M, Davidović AD. Suppression of spin-orbit scattering in strongly disordered gold nanojunctions. Phys Rev Lett 2004; 93:246604. [PMID: 15697842 DOI: 10.1103/physrevlett.93.246604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2004] [Indexed: 05/24/2023]
Abstract
We discovered that spin-orbit scattering in strongly disordered gold nanojunctions is strongly suppressed relative to that in weakly disordered gold thin films. This property is unusual because in weakly disordered films spin-orbit scattering increases with disorder. Granularity and freezing of spin-orbit scattering inside the grains explains the suppression of spin-orbit scattering. We propose a generalized Elliot-Yafet relation that applies to a strongly disordered granular regime.
Collapse
Affiliation(s)
- A Anaya
- Georgia Institute of Technology, Atlanta, GA 30332, USA
| | | | | |
Collapse
|
50
|
Atkins H, Freedman M, Bowman M, Bar-Or A, Cheynier R, Corsini R, Jalili F, Kim H, Miller L, Sekaly R. Immune events following immunoablative therapy for the treatment of multiple sclerosis (MS). Biol Blood Marrow Transplant 2004. [DOI: 10.1016/j.bbmt.2003.12.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|