468 results on '"Clark SL"'
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2. Evidence of maternal transfer of antigen-specific antibodies in serum and breast milk to infants at high-risk of S. pneumoniae and H. influenzae disease.
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Martinovich, KM, Seppanen, EJ, Bleakley, AS, Clark, SL, Andrews, RM, Richmond, PC, Binks, MJ, Thornton, RB, Kirkham, L-AS, Martinovich, KM, Seppanen, EJ, Bleakley, AS, Clark, SL, Andrews, RM, Richmond, PC, Binks, MJ, Thornton, RB, and Kirkham, L-AS
- Abstract
INTRODUCTION: Children in low-mid income countries, and First Nations children in high-income countries, experience disproportionately high rates of Streptococcus pneumoniae and Haemophilus influenzae infections and diseases including pneumonia and otitis media. We previously observed that infants from Papua New Guinea had no evidence of waning maternal immunity for H. influenzae-specific antibodies. In this study, we assessed S. pneumoniae and H. influenzae antibody titres in Australian First Nation mothers and infants to determine antigen-specific antibody ontogenies and whether H. influenzae antibody titres in infants were due to low maternal antibody titres or lack of placental transfer. METHODS: Breast milk, infant nasopharyngeal swabs and ear assessment data were collected 1-, 2-, 7-months post-birth as well as maternal, cord and 7-month-old infant sera, from 85 Australian Aboriginal and Torres Strait Islander mother-infant pairs. Serum IgG and breast milk IgG and IgA antibody titres to S. pneumoniae antigens (PspA1, PspA2, CbpA, Ply) and H. influenzae antigens (PD, ChimV4, OMP26, rsPilA) were measured. RESULTS: IgG titres in maternal and cord sera were similar for all antigens, except Ply (higher in cord; p=0.004). Sera IgG titres at 7-months of age were lower than cord sera IgG titres for all S. pneumoniae antigens (p<0.001). Infant sera IgG titres were higher than cord sera for H. influenzae PD (p=0.029), similar for OMP26 (p=0.817) and rsPilA (p=0.290), and lower for ChimV4 (p=0.004). Breast milk titres were similar for all antigens at 1, 2 and 7-months except OMP26 IgA (lower at 7-months than 1-month; p=0.035), PspA2 IgG (p=0.012) and Ply IgG that increased by 7-months (p=0.032). One third of infants carried nontypeable Haemophilus influenzae (NTHi), 45% carried S. pneumoniae and 52% had otitis media (OM) observed at least once over the 7-months. 73% of infants who carried either S. pneumoniae or NTHi, also had otitis media observed. CONCLUSIONS: Similari
- Published
- 2022
3. Phase 1b clinical trial of ado-trastuzumab emtansine and ribociclib for HER2-positive metastatic breast cancer
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Spring, LM, Clark, SL, Li, T, Goel, S, Tayob, N, Viscosi, E, Abraham, E, Juric, D, Isakoff, SJ, Mayer, E, Moy, B, Supko, JG, Tolaney, SM, Bardia, A, Spring, LM, Clark, SL, Li, T, Goel, S, Tayob, N, Viscosi, E, Abraham, E, Juric, D, Isakoff, SJ, Mayer, E, Moy, B, Supko, JG, Tolaney, SM, and Bardia, A
- Abstract
Patients with HER2+ metastatic breast cancer are often treated with a multitude of therapies in the metastatic setting, and additional strategies to prolong responses to anti-HER2 therapies are needed. Preclinical evidence suggests synergy between cyclin-dependent kinase 4 and 6 (CDK 4/6) inhibitors and anti-HER2 therapies. We conducted a phase 1b study of ribociclib and ado-trastuzumab emtansine (T-DM1) in patients with advanced/metastatic HER2-positive breast cancer previously treated with trastuzumab and a taxane in any setting, with four or fewer prior lines of therapy in the metastatic setting. A standard 3 + 3 dose-escalation design was used to evaluate various doses of ribociclib in combination with T-DM1, starting at 300 mg. The primary objective was to determine the maximum tolerated dose and/or recommended phase 2 dose (RP2D) of ribociclib in combination with T-DM1. A total of 12 patients were enrolled. During dose-escalation, patients received doses of ribociclib of 300 mg (n = 3), 400 mg (n = 3), 500 mg (n = 3), and 600 mg (n = 3). No dose-limiting toxicities were observed. The majority of toxicities were Grade 1 and 2, and the most common Grade 3 toxicities were neutropenia (33%), leukopenia (33%), and anemia (25%). After a median follow-up of 12.4 months, the median PFS was 10.4 months (95% confidence interval, 2.7-19.3). Based on the pharmacokinetic analysis, adverse events, and dose reductions, 400 mg was determined to be the RP2D for ribociclib given on days 8-21 of a 21-day cycle with T-DM1.
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- 2021
4. A methylation study of long-term depression risk
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Clark, SL, Hattab, MW, Chan, RF, Shabalin, AA, Han, LKM, Zhao, M, Smit, JH, Jansen, R, Milaneschi, Y, Xie, LY, van Grootheest, G, Penninx, BWJH, Aberg, KA, van den Oord, EJCG, Clark, SL, Hattab, MW, Chan, RF, Shabalin, AA, Han, LKM, Zhao, M, Smit, JH, Jansen, R, Milaneschi, Y, Xie, LY, van Grootheest, G, Penninx, BWJH, Aberg, KA, and van den Oord, EJCG
- Abstract
Recurrent and chronic major depressive disorder (MDD) accounts for a substantial part of the disease burden because this course is most prevalent and typically requires long-term treatment. We associated blood DNA methylation profiles from 581 MDD patients at baseline with MDD status 6 years later. A resampling approach showed a highly significant association between methylation profiles in blood at baseline and future disease status (P = 2.0 × 10-16). Top MWAS results were enriched specific pathways, overlapped with genes found in GWAS of MDD disease status, autoimmune disease and inflammation, and co-localized with eQTLS and (genic enhancers of) of transcription sites in brain and blood. Many of these findings remained significant after correction for multiple testing. The major themes emerging were cellular responses to stress and signaling mechanisms linked to immune cell migration and inflammation. This suggests that an immune signature of treatment-resistant depression is already present at baseline. We also created a methylation risk score (MRS) to predict MDD status 6 years later. The AUC of our MRS was 0.724 and higher than risk scores created using a set of five putative MDD biomarkers, genome-wide SNP data, and 27 clinical, demographic and lifestyle variables. Although further studies are needed to examine the generalizability to different patient populations, these results suggest that methylation profiles in blood may present a promising avenue to support clinical decision making by providing empirical information about the likelihood MDD is chronic or will recur in the future.
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- 2020
5. Methylome-wide association findings for major depressive disorder overlap in blood and brain and replicate in independent brain samples
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Aberg, KA, Dean, B, Shabalin, AA, Chan, RF, Han, LKM, Zhao, M, van Grootheest, G, Xie, LY, Milaneschi, Y, Clark, SL, Turecki, G, Penninx, BWJH, van den Oord, EJCG, Aberg, KA, Dean, B, Shabalin, AA, Chan, RF, Han, LKM, Zhao, M, van Grootheest, G, Xie, LY, Milaneschi, Y, Clark, SL, Turecki, G, Penninx, BWJH, and van den Oord, EJCG
- Abstract
We present the first large-scale methylome-wide association studies (MWAS) for major depressive disorder (MDD) to identify sites of potential importance for MDD etiology. Using a sequencing-based approach that provides near-complete coverage of all 28 million common CpGs in the human genome, we assay methylation in MDD cases and controls from both blood (N = 1132) and postmortem brain tissues (N = 61 samples from Brodmann Area 10, BA10). The MWAS for blood identified several loci with P ranging from 1.91 × 10-8 to 4.39 × 10-8 and a resampling approach showed that the cumulative association was significant (P = 4.03 × 10-10) with the signal coming from the top 25,000 MWAS markers. Furthermore, a permutation-based analysis showed significant overlap (P = 5.4 × 10-3) between the MWAS findings in blood and brain (BA10). This overlap was significantly enriched for a number of features including being in eQTLs in blood and the frontal cortex, CpG islands and shores, and exons. The overlapping sites were also enriched for active chromatin states in brain including genic enhancers and active transcription start sites. Furthermore, three loci located in GABBR2, RUFY3, and in an intergenic region on chromosome 2 replicated with the same direction of effect in the second brain tissue (BA25, N = 60) from the same individuals and in two independent brain collections (BA10, N = 81 and 64). GABBR2 inhibits neuronal activity through G protein-coupled second-messenger systems and RUFY3 is implicated in the establishment of neuronal polarity and axon elongation. In conclusion, we identified and replicated methylated loci associated with MDD that are involved in biological functions of likely importance to MDD etiology.
- Published
- 2020
6. Abstract P3-03-10: Pre-operative lymphoscintigraphy for sentinel lymph node localisation: Is it necessary?
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Clark, SL, primary, Yilmaz, D, additional, Arun, K, additional, Javadzadeh, S, additional, Saeed, S, additional, and Ullah, MZ, additional
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- 2019
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7. TIMING OF DELIVERY AND NEONATAL OUTCOME IN PATIENTS WITH CLINICALLY OVERT UTERINE RUPTURE DURING VBAC
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Porter, TF, Clark, SL, Esplin, Tooke-Miller, C, and Scott, JR
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- 1998
8. IS VBAC LESS EXPENSIVE THAN REPEAT CESAREAN?
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Clark, SL, McClellan, V, Scott, JR, Burton, DA, and Porter, TF
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- 1998
9. Epigenetic Aging in Major Depressive Disorder
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Han, LKM, Aghajani, M, Clark, SL, Chan, RF, Hattab, MW, Shabalin, AA, Zhao, M, Kumar, G, Xie, LY, Jansen, R, Milaneschi, Y, Dean, B, Aberg, KA, van den Oord, EJCG, Penninx, BWJH, Han, LKM, Aghajani, M, Clark, SL, Chan, RF, Hattab, MW, Shabalin, AA, Zhao, M, Kumar, G, Xie, LY, Jansen, R, Milaneschi, Y, Dean, B, Aberg, KA, van den Oord, EJCG, and Penninx, BWJH
- Abstract
OBJECTIVE: Major depressive disorder is associated with an increased risk of mortality and aging-related diseases. The authors examined whether major depression is associated with higher epigenetic aging in blood as measured by DNA methylation (DNAm) patterns, whether clinical characteristics of major depression have a further impact on these patterns, and whether the findings replicate in brain tissue. METHOD: DNAm age was estimated using all methylation sites in blood of 811 depressed patients and 319 control subjects with no lifetime psychiatric disorders and low depressive symptoms from the Netherlands Study of Depression and Anxiety. The residuals of the DNAm age estimates regressed on chronological age were calculated to indicate epigenetic aging. Major depression diagnosis and clinical characteristics were assessed with questionnaires and psychiatric interviews. Analyses were adjusted for sociodemographic characteristics, lifestyle, and health status. Postmortem brain samples of 74 depressed patients and 64 control subjects were used for replication. Pathway enrichment analysis was conducted using ConsensusPathDB to gain insight into the biological processes underlying epigenetic aging in blood and brain. RESULTS: Significantly higher epigenetic aging was observed in patients with major depression compared with control subjects (Cohen's d=0.18), with a significant dose effect with increasing symptom severity in the overall sample. In the depression group, epigenetic aging was positively and significantly associated with childhood trauma score. The case-control difference was replicated in an independent data set of postmortem brain samples. The top significantly enriched Gene Ontology terms included neuronal processes. CONCLUSIONS: As compared with control subjects, patients with major depression exhibited higher epigenetic aging in blood and brain tissue, suggesting that they are biologically older than their corresponding chronological age. This effect was
- Published
- 2018
10. Lentils Do Not Affect Satiety or Food Intake When Substituted for Wheat Flour in a Muffin Matrix in Healthy Adults
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Clark, SL, additional, Ramdath, DD, additional, King, BV, additional, O'Connor, KE, additional, Hawke, A, additional, Aliani, M, additional, and Duncan, AM, additional
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- 2018
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11. Correcting for cell-type effects in DNA methylation studies: reference-based method outperforms latent variable approaches in empirical studies
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Hattab, MW, Shabalin, AA, Clark, SL, Zhao, M, Kumar, G, Chan, RF, Xie, LY, Jansen, R, Han, LKM, Magnusson, PKE, van Grootheest, G, Hultman, CM, Penninx, BWJH, Aberg, KA, van den Oord, EJCG, Hattab, MW, Shabalin, AA, Clark, SL, Zhao, M, Kumar, G, Chan, RF, Xie, LY, Jansen, R, Han, LKM, Magnusson, PKE, van Grootheest, G, Hultman, CM, Penninx, BWJH, Aberg, KA, and van den Oord, EJCG
- Abstract
Based on an extensive simulation study, McGregor and colleagues recently recommended the use of surrogate variable analysis (SVA) to control for the confounding effects of cell-type heterogeneity in DNA methylation association studies in scenarios where no cell-type proportions are available. As their recommendation was mainly based on simulated data, we sought to replicate findings in two large-scale empirical studies. In our empirical data, SVA did not fully correct for cell-type effects, its performance was somewhat unstable, and it carried a risk of missing true signals caused by removing variation that might be linked to actual disease processes. By contrast, a reference-based correction method performed well and did not show these limitations. A disadvantage of this approach is that if reference methylomes are not (publicly) available, they will need to be generated once for a small set of samples. However, given the notable risk we observed for cell-type confounding, we argue that, to avoid introducing false-positive findings into the literature, it could be well worth making this investment.Please see related Correspondence article: https://genomebiology.biomedcentral.com/articles/10/1186/s13059-017-1149-7 and related Research article: https://genomebiology.biomedcentral.com/articles/10.1186/s13059-016-0935-y.
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- 2017
12. Author's reply re: UK Secretary of State for Health proposes a new model for compensating the victims of adverse outcomes due to medical/midwifery errors during childbirth and Malpractice reduction and standardisation of care; two sides of the same coin
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Clark, SL, primary
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- 2017
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13. Malpractice reduction and standardisation of care: two sides of the same coin
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Clark, SL, primary
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- 2017
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14. Migration of Antigen-Presenting B Cells from Peripheral to Mucosal Lymphoid Tissues May Induce Intestinal Antigen-Specific IgA Following Parenteral Immunization
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Coffin, SE, Clark, SL, Bos, NA, Brubaker, JO, Offit, PA, and Translational Immunology Groningen (TRIGR)
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CD4(+) T-CELLS ,MICE ,LYMPHOCYTES-T ,IMMUNE-RESPONSES ,GERMINAL-CENTERS ,Immunology ,VIRUS ,POPULATIONS ,Immunology and Allergy ,DENDRITIC CELLS ,ROTAVIRUS INFECTION ,ANTIBODY-PRODUCTION - Abstract
Parenterally administered immunizations have long been used to induce protection from mucosal pathogens such as Bordetella pertussis and influenza virus. We previously found that i.m. inoculation of mice with the intestinal pathogen, rotavirus, induced virus-specific Ab production by intestinal lymphocytes. We have now used adoptive transfer studies to identify the cell types responsible for the generation of virus-specific Ab production by gut-associated lymphoid tissue (GALT) after i.m. immunization. Three days after i.m. immunization with rotavirus, cells obtained from the draining peripheral lymph nodes of donor mice were transferred into naive recipient mice. We found that intestinal lymphocytes produced rotavirus-specific Igs (IgM, IgA, and IgG) 2 wk after transfer of either unfractionated cells, or unfractionated cells rendered incapable of cellular division by mitomycin C treatment. Additional studies demonstrated that rotavirus-specific IgA, but not IgG, was produced by intestinal lymphocytes after transfer of purified B cells. Ig allotype analysis revealed that rotavirus-specific IgA was produced by intestinal B cells of recipient origin, suggesting that migration of Ag-presenting B cells from peripheral lymphoid tissues to GALT may contribute to the generation of mucosal IgA responses after parenteral immunization. Strategies that promote Ag uptake and presentation by B cells may enhance mucosal IgA production following parenteral immunization.
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- 1999
15. Cardiac disease in pregnancy – some good news
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Clark, SL, primary
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- 2015
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16. Practice may not always make perfect (outcomes)
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Belfort, MA, primary, Arnold, J, additional, and Clark, SL, additional
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- 2015
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17. Pediatric Critical Care in Resource Limited Settings—Lessening the Gap Through Ongoing Collaboration, Advancement in Research and Technological Innovations
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Ashley Bjorklund, Tina Slusher, Louise Tina Day, Mariya Mukhtar Yola, Clark Sleeth, Andrew Kiragu, Arianna Shirk, Kristina Krohn, and Robert Opoka
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pediatric critical care ,low and middle income countries ,telemedicine ,simulation ,device innovation ,virtual platforms ,Pediatrics ,RJ1-570 - Abstract
Pediatric critical care has continued to advance since our last article, “Pediatric Critical Care in Resource-Limited Settings—Overview and Lessons Learned” was written just 3 years ago. In that article, we reviewed the history, current state, and gaps in level of care between low- and middle-income countries (LMICs) and high-income countries (HICs). In this article, we have highlighted recent advancements in pediatric critical care in LMICs in the areas of research, training and education, and technology. We acknowledge how the COVID-19 pandemic has contributed to increasing the speed of some developments. We discuss the advancements, some lessons learned, as well as the ongoing gaps that need to be addressed in the coming decade. Continued understanding of the importance of equitable sustainable partnerships in the bidirectional exchange of knowledge and collaboration in all advancement efforts (research, technology, etc.) remains essential to guide all of us to new frontiers in pediatric critical care.
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- 2022
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18. Outpatient management of asthma during pregnancy
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Michael S. Esplin and Clark Sl
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Pathophysiology of asthma ,medicine.medical_specialty ,Intrauterine growth restriction ,Preeclampsia ,immune system diseases ,Pregnancy ,medicine ,Ambulatory Care ,Humans ,Anti-Asthmatic Agents ,Asthma ,business.industry ,Incidence (epidemiology) ,Obstetrics and Gynecology ,Prenatal Care ,medicine.disease ,respiratory tract diseases ,Pregnancy Complications ,Low birth weight ,Emergency medicine ,Female ,medicine.symptom ,business ,Outpatient management - Abstract
Asthma is responsible for 28 million office visits, 1 million emergency room visits, more than 130,000 hospitalizations, and results in approximately 4000 deaths in the United States each year.1 It is estimated that asthma affects as many as 4% of all pregnancies, and the incidence appears to be increasing.2 When poorly controlled or severe in nature, asthma can cause significant morbidity and mortality in the pregnant patient, including increases in intrauterine growth restriction, low birth weight, and preeclampsia. A recent report by the Working Group on Asthma and Pregnancy found that undertreatment, principally attributable to unfounded fears of fetal affects of medication, is the major problem in the management of asthma during pregnancy in the United States.3 This article reviews the most current ideas about the pathophysiology of asthma, discusses the effect of asthma on pregnancy, and outlines an aggressive approach to outpatient treatment designed to reduce or eliminate the increased risks of asthma during pregnancy.
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- 1998
19. The effect of porcine somatotropin supplementation in pigs on the lipid profile of subcutaneous and intermuscular adipose tissue and longissimus muscle
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Clark Sl, Ching Yuan Hu, and Rosemary C. Wander
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Male ,medicine.medical_specialty ,Swine ,Adipose tissue ,Biology ,Internal medicine ,Genetics ,medicine ,Animals ,Longissimus muscle ,medicine.diagnostic_test ,Muscles ,fungi ,Fatty Acids ,food and beverages ,General Medicine ,Lipids ,Endocrinology ,Adipose Tissue ,Lipid content ,Growth Hormone ,Saturated fatty acid ,Animal Science and Zoology ,Fatty acid composition ,Lipid profile ,Food Science - Abstract
The effect of porcine somatotropin PST) on the lipid profiles of adipose tissue and muscle was investigated. Sixteen crossbred barrows were injected daily with either 3 mg of PST or a placebo. After slaughter, total lipid and fatty acid composition of raw subcutaneous (SC) adipose and intermuscular (IM) adipose tissue and longissimus muscle were determined. The SC adipose tissue from PST-treated pigs had a 7.5% decrease in total lipid content; specific fatty acids 16:0, 18:0, and 18:1(n-9)c decreased most. The IM fat from PST-treated pigs had lower levels of 16:0 and 20:0. There was no effect of PST treatment on the lipid profile of the longissimus muscle. The data suggest that PST treatment produces small but significant changes in the saturated fatty acid content Of adipose tissue in pigs.
- Published
- 1992
20. Amniotic fluid embolism.
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Clark SL
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Amniotic fluid embolism (AFE) remains an enigmatic, but devastating obstetrical condition associated with significant maternal and newborn morbidity and mortality. Although our understanding of this condition is incomplete, research over the past 2 decades has altered traditional concepts of both the causation and pathophysiology of AFE. Although maternal treatment remains primarily supportive, prompt delivery of the fetus can substantially improve neonatal outcome after AFE-induced cardiac arrest. Newer biochemical markers may in the future enhance the specificity and sensitivity of this clinical diagnosis and could potentially lead to improved therapy. [ABSTRACT FROM AUTHOR]
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- 2010
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21. Reducing obstetric litigation through alterations in practice patterns.
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Clark SL, Belfort MA, Dildy GA, Meyers JA, Clark, Steven L, Belfort, Michael A, Dildy, Gary A, and Meyers, Janet A
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Objective: To estimate the extent to which obstetric malpractice claims might be reduced by adherence to a limited number of specific practice patterns.Methods: We examined all 189 closed perinatal claims between 2000 and 2005 from a single, large, professional liability insurer. Each case was subjected to three separate analyses: 1) whether the adverse outcome was caused by substandard care, 2) what changes in practice likely would have avoided the adverse outcome, regardless of standard-of-care considerations, and 3) to what extent did substandard documentation lead to payment in cases in which there was no objective evidence of substandard care.Results: Seventy percent of claims involving obstetric practice (accounting for 79% of all costs) involved substandard care. Payments in 85% of cases involving non-vaginal birth after cesarean (VBAC) fetal monitoring, 16% of maternal injury cases, 80% of cases involving VBAC, and 54% of shoulder dystocia cases were avoidable had four specific practice and documentation patterns been followed.Conclusion: Most money currently paid in conjunction with obstetric malpractice cases is a result of actual substandard care resulting in preventable injury. Well more than half of hospital litigation costs might be avoided if physician practice included: 1) delivery in a facility with 24-hour in-house obstetric coverage; 2) adherence to published high-risk medication protocols; 3) a more conservative approach to VBAC; and 4) use of a comprehensive, standardized procedure note in cases of shoulder dystocia.Level Of Evidence: III. [ABSTRACT FROM AUTHOR]- Published
- 2008
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22. Cerebral hemodynamics in preeclampsia: cerebral perfusion and the rationale for an alternative to magnesium sulfate.
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Belfort MA, Clark SL, and Sibai B
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- 2006
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23. Deficiency in NOD antigen-presenting cell function may be responsible for suboptimal CD4+CD25+ T-cell-mediated regulation and type 1 diabetes development in NOD mice.
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Alard P, Manirarora JN, Parnell SA, Hudkins JL, Clark SL, and Kosiewicz MM
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Various defects in antigen-presenting cells (APCs) and T-cells, including regulatory cells, have been associated with type 1 diabetes development in NOD mice. CD4(+)CD25(+) regulatory cells play a crucial role in controlling various autoimmune diseases, and a deficiency in their number or function could be involved in disease development. The current study shows that NOD mice had fewer CD4(+)CD25(+) regulatory cells, which expressed normal levels of glucocorticoid-induced tumor necrosis factor receptor and cytotoxic T-lymphocyte-associated antigen-4. We have also found that NOD CD4(+)CD25(+) cells regulate poorly in vitro after stimulation with anti-CD3 and NOD APCs in comparison with B6 CD4(+)CD25(+) cells stimulated with B6 APCs. Surprisingly, stimulation of NOD CD4(+)CD25(+) cells with B6 APCs restored regulation, whereas with the reciprocal combination, NOD APCs failed to activate B6 CD4(+)CD25(+) cells properly. Interestingly, APCs from disease-free (>30 weeks of age), but not diabetic, NOD mice were able to activate CD4(+)CD25(+) regulatory function in vitro and apparently in vivo because only spleens of disease-free NOD mice contained potent CD4(+)CD25(+) regulatory cells that prevented disease development when transferred into young NOD recipients. These data suggest that the failure of NOD APCs to activate CD4(+)CD25(+) regulatory cells may play an important role in controlling type 1 diabetes development in NOD mice. [ABSTRACT FROM AUTHOR]
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- 2006
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24. Central hemodynamic assessment of normal term pregnancy
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Clark, SL, primary, Cotton, DB, additional, Lee, W, additional, Bishop, C, additional, Hill, T, additional, Southwick, J, additional, Pivarnik, J, additional, Spillman, T, additional, DeVore, GR, additional, Phelan, J, additional, Hankins, GDV, additional, Benedetti, TJ, additional, and Tolley, D, additional
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- 1990
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25. Temporal and demographic trends in cerebral palsy--fact and fiction.
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Clark SL, Hankins GDV, Clark, Steven L, and Hankins, Gary D V
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The rate of cerebral palsy has not decreased in developed countries over the past 30 years, despite the widespread use of electronic fetal heart rate monitoring and a 5-fold increase in the cesarean delivery rate over the same period of time. However, neonatal survival has improved during these decades. These observations have lead to the hypothesis that increased survival of premature, neurologically impaired infants may have masked an actual reduction in cerebral palsy among term infants as a result of the use of electronic monitoring and the avoidance of intrapartum asphyxia. A review of the medical literature, as well as a demographic analysis of term and preterm birth rates in the United States, refutes this hypothesis on four grounds. First, cerebral palsy prevalence has been separately analyzed in term infants and shows no change over 30 years. Second, the prevalence of cerebral palsy is the same or lower in underdeveloped countries than in developed nations; in the former, the availability of emergency cesarean delivery based on electronic monitor data is limited or absent. Third, the increase in prevalence of cerebral palsy among low-birth-weight infants and the increase in cesarean sections based on presumed fetal distress were not simultaneous events-the former preceded the latter by a decade. Improved neonatal survival since the 1980s has been associated with a stable or decreasing rate of neurologic impairment and thus could not have obscured improvement from reduced term asphyxia. Finally, compared with the number of infants born by cesarean section for fetal distress, there are simply not enough infants born in the most vulnerable weight groups to make any impact on even a minimal improvement of outcome in the group delivered by cesarean section for presumed fetal distress. Except in rare instances, cerebral palsy is a developmental event that is unpreventable given our current state of technology. [ABSTRACT FROM AUTHOR]
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- 2003
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26. The medical and economic impact of the Newborns' and Mothers' Health Protection Act.
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Mosen DM, Clark SL, Mundorff MB, Tracy DM, McKnight EC, Zollo MB, Mosen, David M, Clark, Steven L, Mundorff, Michael B, Tracy, Diane M, McKnight, Elizabeth C, and Zollo, Mary B
- Abstract
Objective: We evaluated the effect of the Newborns' and Mothers' Health Protection Act on clinical and cost outcomes.Methods: We conducted an observational study of 18,023 healthy, mother-infant dyads before (n = 8670) and after (n = 9353) implementation of the Newborns' and Mothers' Health Protection Act legislation. Logistic regression was used to calculate adjusted odds ratios (ORs) for the following outcome measures: length of stay at least 48 hours, satisfaction with maternal length of stay, 7- and 30-day hospital readmission utilization, and 7- and 30-day emergency room utilization. Analysis of covariance was used to evaluate adjusted mean hospitalization costs per delivery.Results: Mothers in the postlegislation period were more likely to have hospital stays at least 48 hours (OR 3.99; 95% confidence interval [CI] 3.57, 4.44) and rate their length of stay as "about right" (OR 5.54; 95% CI 4.76, 6.46) compared with mothers in the prelegislation period. Neonates in the postlegislation period were more likely to have hospital stays of at least 48 hours (OR 3.96; 95% CI 3.54, 4.43) and less likely to be rehospitalized within 7 days after hospitalization (OR 0.61; 95% CI 0.40, 0.95) compared with neonates in the prelegislation period. Adjusted mean hospitalization costs increased $116 per delivery in the postlegislation period.Conclusions: After implementation of the Newborns' and Mothers' Health Protection Act legislation, maternal and newborn length of stay and maternal satisfaction with length of stay increased substantially, and hospitalization costs increased significantly. The strongest clinical benefit was observed among neonates who were at a lower risk for hospitalization within 1 week of discharge. With the exception of 30-day emergency room utilization, there was insufficient statistical power to test for differences among other maternal clinical outcomes. [ABSTRACT FROM AUTHOR]- Published
- 2002
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27. Delivering a shoulder dystocia: how I do it.
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Chez RA and Clark SL
- Published
- 1999
28. Establishing an antepartum testing unit: the nurse's role.
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Sabey PL and Clark SL
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- 1992
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29. Amniotic fluid index and perinatal morbidity.
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Dizon-Townson D, Kennedy KA, Dildy GA, Wu J, Egger M, and Clark SL
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- 1996
30. Septic shock during pregnancy
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Lee, W, primary, Clark, SL, additional, Cotton, DB, additional, Gonik, B, additional, Phelan, J, additional, Faro, S, additional, and Giebel, R, additional
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- 1989
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31. Vaginal birth after cesarean
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Phelan, JP, primary, Clark, SL, additional, Diaz, F, additional, and Paul, RH, additional
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- 1988
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32. Nonstress testing with acoustic stimulation and amniotic fluid volume assessment: 5973 tests without unexpected fetal death
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Clark, SL, primary, Sabey, P, additional, and Jolley, K, additional
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- 1989
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33. Practice may not always make perfect (outcomes).
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Belfort, MA, Arnold, J, and Clark, SL
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MEDICAL simulation ,PHYSICIAN training ,SHOULDER dystocia ,METHODOLOGY ,BRACHIAL plexus ,WOUNDS & injuries - Abstract
The article presents a commentary on a study which suggests that simulation-based training can have a meaningful effect on clinical outcomes in shoulder dystocia that can be sustained with an ongoing training programme. Topics discussed include the study's methodological shortcomings, and the failure of the study's design to support an implication that all permanent brachial plexus injury can be eliminated with proper training.
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- 2016
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34. Cerebral hemodynamics in preeclampsia: cerebral perfusion and the rationale for an alternative to magnesium sulfate.
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Moodley PJ, Belfort MA, Clark SL, and Sibai B
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- 2007
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35. Reduction in elective delivery at <39 weeks of gestation: comparative effectiveness of 3 approaches to change and the impact on neonatal intensive care admission and stillbirth.
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Clark SL, Frye DR, Meyers JA, Belfort MA, Dildy GA, Kofford S, Englebright J, and Perlin JA
- Abstract
OBJECTIVE: No studies exist that have examined the effectiveness of different approaches to a reduction in elective early term deliveries or the effect of such policies on newborn intensive care admissions and stillbirth rates. STUDY DESIGN: We conducted a retrospective cohort study of prospectively collected data and examined outcomes in 27 hospitals before and after implementation of 1 of 3 strategies for the reduction of elective early term deliveries. RESULTS: Elective early term delivery was reduced from 9.6-4.3% of deliveries, and the rate of term neonatal intensive care admissions fell by 16%. We observed no increase in still births. The greatest improvement was seen when elective deliveries at <39 weeks were not allowed by hospital personnel. CONCLUSION: Physician education and the adoption of policies backed only by peer review are less effective than 'hard stop' hospital policies to prevent this practice. A 5% rate of elective early term delivery would be reasonable as a national quality benchmark. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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36. Evidence-based NNJ research article welcomed in local unit!
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Clark SL
- Published
- 2005
37. Lifesaving advice.
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Clark SL
- Published
- 1999
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38. Next-generation biomarkers for alcohol consumption and alcohol use disorder diagnosis, prognosis, and treatment: A critical review.
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Clark SL, Hartwell EE, Choi DS, Krystal JH, Messing RO, and Ferguson LB
- Abstract
This critical review summarizes the current state of omics-based biomarkers in the alcohol research field. We first provide definitions and background information on alcohol and alcohol use disorder (AUD), biomarkers, and "omic" technologies. We next summarize using (1) genetic information as risk/prognostic biomarkers for the onset of alcohol-related problems and the progression from regular drinking to problematic drinking (including AUD), (2) epigenetic information as diagnostic biomarkers for AUD and risk biomarkers for alcohol consumption, (3) transcriptomic information as diagnostic biomarkers for AUD, risk biomarkers for alcohol consumption, and (4) metabolomic information as diagnostic biomarkers for AUD, risk biomarkers for alcohol consumption, and predictive biomarkers for response to acamprosate in subjects with AUD. In the final section, the clinical implications of the findings are discussed, and recommendations are made for future research., (© 2024 Research Society on Alcohol.)
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- 2024
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39. The impact of indication for cesarean on blood loss.
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Mitts MD, Belfort MA, and Clark SL
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Background: Postpartum hemorrhage is the leading cause of maternal mortality worldwide. Quantitative blood loss assessment during cesarean delivery is a more accurate measure of blood loss than simple estimation. Risk factors for postpartum hemorrhage are well described. However, contemporary systematic investigations on the effect of indications for cesarean delivery on quantitative blood loss are lacking., Objective: This study aimed to investigate whether there are clinically significant differences in quantitative blood loss and postpartum hemorrhage risk based on the indication for cesarean delivery., Study Design: A total of 4881 cesarean deliveries performed at a large academic hospital between 2020 and 2022 were identified. Primary and repeat cesarean deliveries were analyzed separately and further subdivided into 7 indications: elective, labor arrest, fetal heart rate abnormalities, placenta previa, placenta accreta, malpresentation, and other. Quantitative blood loss and rates of postpartum hemorrhage (>1000 and >1500 mL) were compared among the different indications., Results: The mean quantitative blood loss estimates for primary, repeat, and total cesarean deliveries were 886, 697, and 792 mL, respectively. Excluding cases of placenta accreta, the greatest blood loss in both primary and repeat groups was observed in cesarean deliveries performed for labor arrest, with blood loss exceeding 1500 mL in 18% and 13% of all cases. Blood loss exceeding 1500 mL was noted in 1% and 2% of elective cesarean deliveries. The mean blood loss for planned repeat cesarean deliveries/hysterectomies for placenta accreta was <400 mL greater than that for primary cesarean deliveries performed for labor arrest (1442 vs 1065 mL, respectively), despite the addition of an often-complex hysterectomy to the procedure., Conclusion: Clinically and statistically significant differences in blood loss exist based on the indication for cesarean delivery. Large differences in the rates of serious postpartum hemorrhage (>1500 mL) with negligible differences in mean quantitative blood loss suggest the presence of frequent, large clinical outliers not reflected in a statistical mean. The indication for cesarean delivery and the possibility of such outliers rather than the predicted "average blood loss for cesarean delivery" should be considered when determining risk and the degree of necessary preoperative blood preparation. These data raise questions about whether current traditional techniques of cesarean delivery not associated with placenta accreta can be justified in nonemergent cases when such procedures can be performed with significantly less blood loss using techniques specific for placenta accreta., (Copyright © 2024 Elsevier Inc. All rights reserved.)
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- 2024
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40. Improving Dual Antiplatelet Therapy Adherence Via Implementation of a Pocket Card: A Quality Improvement Pilot Program.
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Oakley CI, Banks SA, Pinto MV, Setter DO, Clark SL, Keser Z, Klaas JP, Leep Hunderfund AN, and Mustafa R
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- Humans, Pilot Projects, Male, Female, Aged, Middle Aged, Platelet Aggregation Inhibitors administration & dosage, Platelet Aggregation Inhibitors therapeutic use, Medication Adherence, Quality Improvement, Dual Anti-Platelet Therapy
- Published
- 2024
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41. Methylome-wide association study of multidimensional resilience.
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Vazquez AY, Burt SA, Mitchell C, Klump KL, Hyde LW, and Clark SL
- Abstract
Although resilient youth provide an important model of successful adaptation to adversity, we know relatively little about the origins of their positive outcomes, particularly the role of biological mechanisms. The current study employed a series of methylome-wide association studies to identify methylomic biomarkers of resilience in a unique sample of 276 twins within 141 families residing in disadvantaged neighborhoods. Results revealed methylome-wide significant differentially methylated probes (DMPs) for social and academic resilience and suggestive DMPs for psychological resilience and resilience across domains. Pathway analyses informed our understanding of the biological underpinnings of significant differentially methylated probes. Monozygotic twin difference analyses were then employed to narrow in on DMPs that were specifically environmental in origin. Our findings suggest that alterations in the DNA methylome may be implicated in youth resilience to neighborhood adversity and that some of the suggestive DMPs may be environmentally engendered. Importantly, our ability to replicate our findings in a well-powered sample was hindered by the scarcity of twin samples with youth exposed to moderate to substantial levels of adversity. Thus, although preliminary, the present study is the first to identify DNA methylation biomarkers of academic and social resilience.
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- 2024
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42. Examining associations between child welfare workforce well-being and utilization of casework skills with children and families.
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Clark SL, Miller B, Akin BA, Barney RK, Grube W, McArthur V, Gulledge E, and Mitchell J
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- Humans, Female, Male, Cross-Sectional Studies, Child, Adult, Middle Aged, Child Protective Services statistics & numerical data, Job Satisfaction, Empathy, Surveys and Questionnaires, Social Workers psychology, Child Welfare statistics & numerical data, Burnout, Professional psychology, Burnout, Professional epidemiology
- Abstract
Background: While child welfare scholarship has paid much attention to workforce well-being such as burnout, secondary traumatic stress (STS), and compassion satisfaction, few studies have investigated how these outcomes influence utilization of casework skills., Objectives: This study aimed to understand the relationship between child welfare workforce well-being and use of casework skills. Specifically, we examined associations between burnout, STS, and compassion satisfaction and casework skills including parent/youth engagement, safety and risk assessment/case planning, and relative/kin connections., Participants and Setting: Participants comprised 786 child welfare direct service workers and supervisors in a Midwestern state., Method: Using a repeated cross-sectional design, data were collected via online surveys. Multivariate regression tested relationships between measures of well-being and casework skills., Results: First, higher compassion satisfaction was positively associated (p = 0.000, f
2 = 0.14) while higher burnout (p = 0.000, f2 = 0.04) and STS (p = 0.002, f2 = 0.01) were negatively associated with use of engagement skills. Similarly, higher compassion satisfaction was positively associated (p = 0.000, f2 = 0.18) and higher burnout (p = 0.000, f2 = 0.06) and STS (p = 0.001, f2 = 0.02) were negatively associated with use of assessment/case planning skills. Lastly, compassion satisfaction (p = 0.000, f2 = 0.06) was positively associated and burnout was negatively associated (p = 0.000, f2 = 0.02) with relative/kin connections., Conclusion: Child welfare workforce well-being may influence use of casework skills. More research is needed to understand how positive workforce well-being impacts service delivery and, ultimately, child and family outcomes., Competing Interests: Declaration of competing interest The authors have no conflicts of interest to disclose. This study was part of a grant funded by the Children's Bureau, Administration for Children and Families, U.S. Department of Health and Human Services, under grant number 90-CO-1139. The paper's contents are solely the responsibility of the authors and do not necessarily represent the official views of the Children's Bureau., (Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)- Published
- 2024
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43. Interleukin-6 receptor antagonists in pregnancy: a reason for cautious optimism.
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Clark SL
- Subjects
- Humans, Pregnancy, Female, Pregnancy Complications drug therapy, Antibodies, Monoclonal, Humanized therapeutic use, Antibodies, Monoclonal, Humanized pharmacology, Antibodies, Monoclonal, Humanized adverse effects, Antirheumatic Agents therapeutic use, Arthritis, Rheumatoid drug therapy, Arthritis, Rheumatoid immunology, Receptors, Interleukin-6 antagonists & inhibitors
- Abstract
Competing Interests: I declare no competing interests.
- Published
- 2024
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44. Substance use patterns and mental health comorbidities in youth with a history of depression or suicidality: Findings from TX-YDSRN.
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Clark SL, Dodd CG, Mitchell TB, Ingram SJ, Armstrong GM, Jha MK, Soares JC, Smith M, Minhajuddin A, Slater H, Wakefield SM, and Trivedi MH
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- Humans, Male, Female, Adolescent, Texas epidemiology, Depression epidemiology, Depression psychology, Suicidal Ideation, Suicide statistics & numerical data, Suicide psychology, Mental Disorders epidemiology, Mental Disorders psychology, Child, Depressive Disorder epidemiology, Substance-Related Disorders epidemiology, Substance-Related Disorders psychology, Comorbidity
- Abstract
Background: There is a robust relationship between depression and substance use in youth, with higher levels of substance use associated with greater depressive symptomatology. However, previous research has examined individual substances, without consideration of psychiatric comorbidities. Here, we investigate patterns of substance use among depressed and/or suicidal youth within the context of psychiatric comorbidities., Methods: 945 youth with depression and/or suicidality from the Texas Youth Depression and Suicide Research Network (TX-YDSRN) were assessed for current use of alcohol, nicotine, cannabis, and other drugs and comorbid psychiatric diagnoses. We used latent class analysis to identify patterns of past-year substance use, then examined if demographics or psychiatric disorders predicted class membership., Results: We identified three patterns of substance use: non-use (63.4 %), moderate likelihood of using alcohol, nicotine and cannabis (23.8 %), and high likelihood of using all substances (12.7 %). Compared to non-users, individuals in the moderate and high likelihood classes were more likely to be older. Individuals in the high likelihood class were more likely to have a substance use disorder, ADHD, and higher suicidality scores., Limitations: We cannot ascertain the causal or temporal ordering of substance use and psychiatric diagnoses due to the cross-sectional nature of the study., Conclusions: Using a brief, self-report measure of substance use, we identified three classes of substance users differing in probability of past-year use, which were predicted by older age and some psychiatric comorbidities. While research on universal screening of substance use in youth remains limited, we discuss who may benefit from such screening among depressed youth., Competing Interests: Declaration of competing interest Drs. Mitchell and Wakefield serve as Executive Committee Members of the Texas Child Mental Health Care Consortium. Dr. Jha has received contract research grants from Acadia Pharmaceuticals, Neurocrine Bioscience, Navitor/Supernus and Janssen Research & Development; honorarium to serve as Section Editor of the Psychiatry & Behavioral Health Learning Network and as Guest Editor for Psychiatric Clinics of North America from Elsevier; consultant fees from Eleusis Therapeutics US, Inc., Janssen Global Services, Janssen Scientific Affairs, Boehringer Ingelheim, and Guidepoint Global; fees to serve on Data Safety and Monitoring Board for Worldwide Clinical Trials (Eliem and Inversargo), Vicore Pharma and IQVIA (Click); and honoraria for educational presentations from North American Center for Continuing Medical Education, Medscape/WebMD, Clinical Care Options, H.C. Wainwright & Co., and Global Medical Education. Dr. Soares has served as a consultant to Boehringer Ingelheim, Livanova, Sunovian, and Johnson & Johnson. He has served on the advisory board of Alkermes and received research grants from Compass Pathways, Mind Med, and Relmada Therapeutics Inc. Dr. Trivedi has provided consulting services to Acadia Pharmaceuticals, Alkermes Inc., Alto Neuroscience Inc., Axsome Therapeutics, BasePoint Health management LLC, Biogen MA Inc., Cerebral Inc., Circular Genomics Inc., Compass Pathfinder Limited, Daiichi Sankyo Inc., GH Research, GreenLight VitalSign6 Inc., Heading Health, Janssen Pharmaceutical, Legion Health, Merck Sharp & Dohme Corp., Mind Medicine Inc., Myriad Neuroscience, Naki Health Ltd., Neurocrine Biosciences Inc., Noema Pharma AG, Orexo US Inc., Otsuka America Pharmaceutical Inc., Otsuka Europe LTD, Otsuka Pharmaceutical Development & Commercialization Inc., Praxis Precision Medicines Inc., PureTech LYT Inc., Relmada Therapeutics Inc., SAGE Therapeutics, Signant Health, Sparian Biosciences, Titan Pharmaceuticals, Takeda Pharmaceuticals Inc., WebMD. He has received grant/research funding from NIMH, NIDA, NCATS, American Foundation for Suicide Prevention, Patient-Centered Outcomes Research Institute (PCORI), Blue Cross Blue Shield of Texas, SAMHSA, and the DoD. Additionally, he has received editorial compensation from Elsevier and Oxford University Press. No other authors have interests to declare., (Copyright © 2024 Elsevier B.V. All rights reserved.)
- Published
- 2024
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45. Alcohol Use Disorder-Associated DNA Methylation in the Nucleus Accumbens and Dorsolateral Prefrontal Cortex.
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White JD, Minto MS, Willis C, Quach BC, Han S, Tao R, Deep-Soboslay A, Zillich L, Witt SH, Spanagel R, Hansson AC, Clark SL, van den Oord EJCG, Hyde TM, Mayfield RD, Webb BT, Johnson EO, Kleinman JE, Bierut LJ, and Hancock DB
- Abstract
Background: Alcohol use disorder (AUD) has a profound public health impact. However, understanding of the molecular mechanisms that underlie the development and progression of AUD remains limited. Here, we investigated AUD-associated DNA methylation changes within and across 2 addiction-relevant brain regions, the nucleus accumbens and dorsolateral prefrontal cortex., Methods: Illumina HumanMethylation EPIC array data from 119 decedents (61 cases, 58 controls) were analyzed using robust linear regression with adjustment for technical and biological variables. Associations were characterized using integrative analyses of public annotation data and published genetic and epigenetic studies. We also tested for brain region-shared and brain region-specific associations using mixed-effects modeling and assessed implications of these results using public gene expression data from human brain., Results: At a false discovery rate of ≤.05, we identified 105 unique AUD-associated CpGs (annotated to 120 genes) within and across brain regions. AUD-associated CpGs were enriched in histone marks that tag active promoters, and our strongest signals were specific to a single brain region. Some concordance was found between our results and those of earlier published alcohol use or dependence methylation studies. Of the 120 genes, 23 overlapped with previous genetic associations for substance use behaviors, some of which also overlapped with previous addiction-related methylation studies., Conclusions: Our findings identify AUD-associated methylation signals and provide evidence of overlap with previous genetic and methylation studies. These signals may constitute predisposing genetic differences or robust methylation changes associated with AUD, although more work is needed to further disentangle the mechanisms that underlie these associations and their implications for AUD., (© 2024 The Authors.)
- Published
- 2024
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46. The role of recurrent trauma on post-traumatic stress disorder symptoms and substance use among trauma exposed youth.
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Leri J, Cisler JM, Dodd CG, Clark SL, Taylor L, Theodorou A, Belford A, Liberzon I, Rathouz PJ, Newport DJ, Devargas C, Wagner K, and Nemeroff CB
- Subjects
- Humans, Male, Female, Adolescent, Child, Young Adult, Comorbidity, Prospective Studies, Adult, Severity of Illness Index, Follow-Up Studies, Recurrence, Stress Disorders, Post-Traumatic epidemiology, Stress Disorders, Post-Traumatic psychology, Substance-Related Disorders epidemiology
- Abstract
Comorbidity between post-traumatic stress disorder (PTSD) and substance use disorder may be explained by a prospective trauma risk conferred by both conditions. The current study modeled concurrent and prospective associations of trauma, PTSD symptoms, and substance use (SU) behavior among trauma exposed youth (ages 8-20). Clinical interviews assessed trauma exposure, PTSD symptom severity, and SU behavior at baseline and at six- and 12-month follow up study visits (N = 2,069). Structural equation models assessed the associations of trauma, PTSD symptoms, and SU behavior. Lifetime trauma was associated with more severe PTSD symptoms and SU behaviors, whereas trauma exposure during the study was only associated with PTSD symptoms. PTSD symptom severity was prospectively associated with trauma exposure. PTSD symptom severity and SU behavior at follow-up study visits were prospectively associated. These results highlight the dynamic interplay between trauma, PTSD symptoms, and SU behavior during youth, a developmental period during which complex psychiatric presentations can have longstanding consequences for health., Competing Interests: Declaration of competing interest JL, JC, CGD, SLC, AB, AT, LT, IL, CD, and KDW have no biomedical financial interests or potential conflicts of interest. PJR serves on a data safety monitoring board for Sunovion Pharmaceuticals. DJN has received research support from Eli Lilly, Glaxo SmithKline (GSK), Janssen, the National Alliance for Research on Schizophrenia and Depression (NARSAD), Navitor, Sage Therapeutics, Takeda Pharmaceuticals, the Texas Health & Human Services Commission, and Wyeth. He has served on speakers' bureaus and/or received honoraria from Astra-Zeneca, Eli Lilly, GSK, Pfizer and Wyeth. He has served on advisory boards for GSK, Janssen, Merck, and Sage Therapeutics. He has served as a consultant to Sage Therapeutics. Neither he nor family members have ever held equity positions in biomedical or pharmaceutical corporations. CBN, in the last three years, served as a consultant to AbbVie, ANeuroTech (division of Anima BV), Signant Health, Magstim, Inc., Intra-Cellular Therapies, Inc., EMA Wellness, Sage, Silo Pharma, Engrail Therapeutics, Pasithea Therapeutic Corp., EcoR1, GoodCap Pharmaceuticals, Inc., Senseye, Clexio, EmbarkBio, SynapseBio, BioXcel Therapeutics. He is a stockholder with Seattle Genetics, Antares, Inc., Corcept Therapeutics Pharmaceuticals Company, EMA Wellness, Precisement Health, Relmada Therapeutics. He has served on advisory boards for ANeuroTech (division of Anima BV), Brain and Behavior Research Foundation (BBRF), Anxiety and Depression Association of America (ADAA), Skyland Trail, Signant Health, Laureate Institute for Brain Research (LIBR), Inc., Heading Health, Pasithea Therapeutic Corp., Sage. He has served on the Board of Directors for Gratitude America, ADAA, Lucy Scientific Discovery, Inc. He holds the following patents: Method and devices for transdermal delivery of lithium (US 6375,990B1); Method of assessing antidepressant drug therapy via transport inhibition of monoamine neurotransmitters by ex vivo assay (US 7148,027B2)., (Copyright © 2024. Published by Elsevier B.V.)
- Published
- 2024
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47. The Impact of Childhood Mental Health and Substance Use on Methylation Aging Into Adulthood.
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Clark SL, McGinnis EW, Zhao M, Xie L, Marks GT, Aberg KA, van den Oord EJCG, and Copeland WE
- Subjects
- Humans, Adolescent, Male, Female, Adult, Young Adult, Mental Disorders, Child, Cross-Sectional Studies, Aging, Mental Health, Substance-Related Disorders epidemiology, DNA Methylation, Adverse Childhood Experiences statistics & numerical data
- Abstract
Objective: To test whether childhood mental health symptoms, substance use, and early adversity accelerate the rate of DNA methylation (DNAm) aging from adolescence to adulthood., Method: DNAm was assayed from blood samples in 381 participants in both adolescence (mean [SD] age = 13.9 [1.6] years) and adulthood (mean [SD] age = 25.9 [2.7] years). Structured diagnostic interviews were completed with participants and their parents at multiple childhood observations (1,950 total) to assess symptoms of common mental health disorders (attention-deficit/hyperactivity disorder, oppositional defiant disorder, conduct disorder, anxiety, and depression) and common types of substance use (alcohol, cannabis, nicotine) and early adversities., Results: Neither childhood mental health symptoms nor substance use variables were associated with DNAm aging cross-sectionally. In contrast, the following mental health symptoms and substance variables were associated with accelerated DNAm aging from adolescence to adulthood: depressive symptoms (b = 0.314, SE = 0.127, p = .014), internalizing symptoms (b = 0.108, SE = 0.049, p = .029), weekly cannabis use (b =1.665, SE = 0.591, p = .005), and years of weekly cannabis use (b = 0.718, SE = 0.283, p = .012). In models testing all individual variables simultaneously, the combined effect of the variables was equivalent to a potential difference of 3.17 to 3.76 years in DNAm aging. A final model tested a variable assessing cumulative exposure to mental health symptoms, substance use, and early adversities. This cumulative variable was strongly associated with accelerated aging (b = 0.126, SE = 0.044, p = .005)., Conclusion: Mental health symptoms and substance use accelerated DNAm aging into adulthood in a manner consistent with a shared risk mechanism., Plain Language Summary: Using data from 381 participants in the Great Smoky Mountains Study, the authors examined whether childhood mental health symptoms, substance use, and early adversity accelerate biological aging, as measured by DNA methylation age, from adolescence to adulthood. Depressive symptoms and cannabis use were found to significantly accelerate biological aging. Models that tested the combined effect of mental health symptoms, substance use, and early adversity demonstrated that there was a shared effect across these types of childhood problems on accelerated aging., (Copyright © 2023 American Academy of Child and Adolescent Psychiatry. Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
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48. Pharmacologic venous thromboembolism prophylaxis for preterm prelabor rupture of membranes.
- Author
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Chirumbole DL, Gandhi M, Clark SL, and Tolcher MC
- Subjects
- Humans, Female, Pregnancy, Retrospective Studies, Adult, Delivery, Obstetric methods, Delivery, Obstetric adverse effects, Delivery, Obstetric statistics & numerical data, Fetal Membranes, Premature Rupture epidemiology, Fetal Membranes, Premature Rupture prevention & control, Venous Thromboembolism prevention & control, Venous Thromboembolism epidemiology, Venous Thromboembolism etiology, Enoxaparin administration & dosage, Anticoagulants administration & dosage
- Abstract
Background: Pregnant patients with preterm prelabor rupture of membranes (PPROM) may experience prolonged hospitalization, which is an indication for pharmacologic venous thromboembolism (VTE) prophylaxis according to certain international guidelines. The proportion of patients who deliver unexpectedly and within a period during which pharmacologic prophylaxis would be expected to impact coagulation is unknown., Objective: To estimate the proportion of patients with PPROM who would deliver within 12 hours of typical dosing of pharmacologic VTE prophylaxis if administered routinely for antepartum admissions >72 hours., Study Design: This is a retrospective cohort study from a database including patients admitted for expectant management of PPROM January 2011 to September 2020. The outcome of the study was the proportion of patients who remained undelivered 72 hours after admission and experienced an unplanned delivery potentially within 12 hours of enoxaparin administration. We evaluated patients undelivered after 72 hours due to international recommendations to initiate VTE prophylaxis in hospitalized patients after 72 hours. Unplanned delivery was defined as onset of spontaneous labor or other indication for immediate delivery. Timing of delivery was analyzed based on usual timing of enoxaparin administration daily at approximately 8 am and the recommendation to withhold regional anesthesia until 12 hours after a prophylactic dose., Results: 1381 deliveries were identified as PPROM out of the 49,322 deliveries in our database. 139 cases were included after the following exclusions: delivery >35 weeks (N=641), rupture of membranes >34 weeks (N=145), delivery <72 hours after admission (N=409), insufficient data (N=35), and duplicates (N=12). Sixty of the 139 (43%) had an unplanned delivery, while 33 of these (24% of total) occurred within 12 hours of enoxaparin administration., Conclusion: A quarter of patients admitted for PPROM had an unplanned delivery within 12 hours of typical enoxaparin dosing. This cohort may experience harm (ineligibility for regional anesthesia, risks of general anesthesia, increased risk of bleeding) if given routine pharmacologic VTE prophylaxis. Risk/benefit considerations should be discussed with patients in considering pharmacologic versus mechanical prophylaxis during prolonged hospitalization for PPROM., (Copyright © 2024 Elsevier Inc. All rights reserved.)
- Published
- 2024
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49. Clinical exome sequencing uncovers genetic disorders in neonates with suspected hypoxic-ischemic encephalopathy: A retrospective analysis.
- Author
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Parobek CM, Zemet R, Shanahan MA, Burnett BA, Mizerik E, Rosenfeld JA, Vossaert L, Clark SL, Hunter JV, and Lalani SR
- Subjects
- Humans, Infant, Newborn, Female, Male, Retrospective Studies, Genetic Predisposition to Disease, Exome genetics, Genetic Diseases, Inborn genetics, Genetic Diseases, Inborn diagnosis, Hypoxia-Ischemia, Brain genetics, Hypoxia-Ischemia, Brain diagnosis, Hypoxia-Ischemia, Brain diagnostic imaging, Exome Sequencing
- Abstract
Hypoxic-ischemic encephalopathy (HIE) occurs in up to 7 out of 1000 births and accounts for almost a quarter of neonatal deaths worldwide. Despite the name, many newborns with HIE have little evidence of perinatal hypoxia. We hypothesized that some infants with HIE have genetic disorders that resemble encephalopathy. We reviewed genetic results for newborns with HIE undergoing exome or genome sequencing at a clinical laboratory (2014-2022). Neonates were included if they had a diagnosis of HIE and were delivered ≥35 weeks. Neonates were excluded for cardiopulmonary pathology resulting in hypoxemia or if neuroimaging suggested postnatal hypoxic-ischemic injury. Of 24 patients meeting inclusion criteria, six (25%) were diagnosed with a genetic condition. Four neonates had variants at loci linked to conditions with phenotypic features resembling HIE, including KIF1A, GBE1, ACTA1, and a 15q13.3 deletion. Two additional neonates had variants in genes not previously associated with encephalopathy, including DUOX2 and PTPN11. Of the six neonates with a molecular diagnosis, two had isolated HIE without apparent comorbidities to suggest a genetic disorder. Genetic diagnoses were identified among neonates with and without sentinel labor events, abnormal umbilical cord gasses, and low Apgar scores. These results suggest that genetic evaluation is clinically relevant for patients with perinatal HIE., (© 2024 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
- Published
- 2024
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50. Longitudinal patterns of posttraumatic stress disorder symptoms among sexual assault survivors: A latent transition analysis.
- Author
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Goodman-Williams R, Clark SL, Campbell R, and Ullman SE
- Subjects
- Humans, Female, Adult, Longitudinal Studies, Young Adult, Male, Middle Aged, Severity of Illness Index, Crime Victims psychology, Stress Disorders, Post-Traumatic epidemiology, Stress Disorders, Post-Traumatic psychology, Stress Disorders, Post-Traumatic etiology, Latent Class Analysis, Survivors psychology, Sex Offenses psychology, Sex Offenses statistics & numerical data
- Abstract
Objective: The aim of this study was to identify latent classes of posttraumatic stress disorder (PTSD) symptoms in a community sample of sexual assault survivors whose assaults occurred varying lengths of time in the past and to explore patterns of transition between those latent classes over time., Method: Latent class analysis was used to identify naturally occurring subgroups of PTSD symptoms in a sample of sexual assault survivors who completed two mailed surveys 1 year apart ( N = 1,271). Latent transition analysis was then used to examine individuals' probabilities of transitioning into each latent class at Time 2 based on their latent class membership at Time 1., Results: A four-class model emerged as the best fitting model at both Time 1 and Time 2. Classes demonstrated overall severity and symptom cluster severity differences. Transition into a lower severity class was more common than transition into a higher severity class, though escalation was demonstrated by 6-20% of participants in each latent class., Conclusions: The substantial heterogeneity in sexual assault survivors' PTSD symptoms highlights the variety of ways that posttraumatic stress may be experienced years after a sexual assault. Future research should explore factors that affect long-term symptoms, including cumulative lifetime trauma and social support. (PsycInfo Database Record (c) 2024 APA, all rights reserved).
- Published
- 2024
- Full Text
- View/download PDF
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