118 research outputs found
Child Custody Outcomes in Cases Involving Parental Alienation and Abuse Allegations
Arguably the most troubling aspect of justice system response to intimate partner violence is custody courts\u27 failure to protect children when mothers allege the father is abusive. Family courts\u27 errors in assessing adult and child abuse, and punitive responses to abuse allegations, have been widely documented.
A significant contributor to these errors is the pseudo-scientific theory of parental alienation (PA). Originally termed parental alienation syndrome (PAS), the theory suggests that when mothers allege that a child is not safe with the father, they are doing so illegitimately, to alienate the child from the father. PA labeling often results in dismissal of women\u27s and children\u27s reports of abuse, and sometimes trumps even expert child abuse evaluations. PAS was explicitly based on negative stereotypes of mothers and has been widely discredited. The term parental alienation â while treated as distinct - is still widely used in ways that are virtually identical to PAS. Nonetheless, because PA is nominally gender neutral (and not called a scientific syndrome), it continues to have substantial credibility in court.
The first goal of this project was to ascertain whether empirical evidence indicates that parental alienation is, like PAS, gender-biased in practice and outcome. Second, the study sought to explore outcomes in custody/abuse litigation by gender and by differing types of abuse. Analysis of over 2000 court opinions confirms that courts are skeptical of mothersâ claims of abuse by fathers; this skepticism is greatest when mothers claim child abuse. The findings also confirm that fathersâ cross-claims of parental alienation increase (virtually doubling) courtsâ rejection of mothersâ abuse claims, and mothersâ losses of custody to the father accused of abuse. In comparing court responses when fathers accuse mothers of abuse, a significant gender difference is identified. Finally, the findings indicate that where Guardians Ad Litem or custody evaluators are appointed, unfavorable outcomes for mothers and gender differences are increased.
The study relies solely on electronically available published opinions in child custody cases. It has produced an invaluable database identifying 10 years of published cases involving alienation, abuse and custody, while coding partiesâ claims and defenses, outcomes, and other key factors by gender and parental status
Dietary Phytochemicals as Inhibitors of Primary Amine Oxidase
Phytochemicals such as methylxanthines, catechins and polyphenols show health benefits in a range of diseases although their mechanism of action is not fully understood. Primary Amine Oxidase (PrAO) is widely recognised as a therapeutic drug target for the treatment of inflammatory, vascular and neurodegenerative diseases. Previous work in our laboratories showed that caffeine inhibited bovine PrAO activity with a Ki of 1.0mM. In the present study we examined a range of methylxanthines and catechins as inhibitors of bovine PrAO. The methylxanthines tested were caffeine, paraxanthine, theophylline, theobromine and 7-methylxanthine. Of these, only theobromine was an inhibitor with an IC50 of ca. 300”M. Calculations indicated that theobromine in foods could inhibit PrAO activity by 20%. The effect of dietary catechins; epicatechin, epicatechin gallate and epigallocatechingallate was even more significant with IC50 values in the micromolar region. However, inhibition by catechins was complicated by apparent activation of PrAO at high concentrations although this was not significant at physiologically attainable levels. Nonetheless, these findings indicate that a range of dietary phytochemicals could affect PrAO activity in vivo. We suggest that the health benefits associated with consumption of certain phytochemicals may be attributed to PrAO inhibition
MicroRNA Profiling Reveals Age-Dependent Differential Expression of Nuclear Factor B and Mitogen-Activated Protein Kinase in Adipose and Bone Marrow-Derived Human Mesenchymal Stem Cells
Introduction. Mesenchymal stem cells (MSCs) play a central role in mediating endogenous repair of cell and tissue damage. Biologic aging is a universal process that results in changes at the cellular and molecular levels. In the present study, the role of microRNA (miRNA) in age-induced molecular changes in MSCs derived from adipose tissue (ASCs) and bone marrow (BMSCs) from young and old human donors were investigated by using an unbiased genome-wide approach.
Methods. Human ASCs and BMSCs from young and old donors were cultured, and total RNA was isolated. The miRNA fraction was enriched and used to determine the expression profile of miRNA in young and old donor MSCs. Based on miRNA expression, differences in donor MSCs were further investigated by using differentiation assays, Western blot, immunocytochemistry, and bioinformatics.
Results: Biologic aging demonstrated reduced osteogenic and adipogenic potential in ASCs isolated from older donors, whereas cell size, complexity, and cell-surface markers remained intact with aging. Analysis of miRNA profiles revealed that small subsets of active miRNAs changed secondary to aging. Evaluation of miRNA showed significantly decreased levels of gene expression of inhibitory kappa B kinase (IÎșB), interleukin-1α, inducible nitric oxide synthase (iNOS), mitogen-activated protein kinase/p38, ERK1/2, c-fos, and c-jun in MSCs from older donors by both bioinformatics and Western blot analysis. Nuclear factor kappa B (NF-ÎșB), myc, and interleukin-4 receptor mRNA levels were significantly elevated in aged cells from both the adipose and bone marrow depots. Immunocytochemistry showed nuclear localization in young donors, but a cytosolic predominance of phosphorylated NF-ÎșB in ASCs from older donors. Western blot demonstrated significantly elevated levels of NF-ÎșB subunits, p65 and p50, and AKT.
Conclusions: These findings suggest that differential expression of miRNA is an integral component of biologic aging in MSCs
Theoretical Analysis of Quantum Ghost Imaging Through Turbulence
Atmospheric turbulence generally affects the resolution and visibility of an image in long-distance imaging. In a recent quantum ghost imaging experiment [P. B. Dixon et al., Phys. Rev. A 83, 051803 (2011)], it was found that the effect of the turbulence can nevertheless be mitigated under certain conditions. This paper gives a detailed theoretical analysis to the setup and results reported in the experiment. Entangled photons with a finite correlation area and a turbulence model beyond the phase screen approximation are considered
Tissue Oxygen Saturation Predicts Response to Breast Cancer Neoadjuvant Chemotherapy within 10 Days of Treatment
Ideally, neoadjuvant chemotherapy (NAC) assessment should predict pathologic complete response (pCR), a surrogate clinical endpoint for 5-year survival, as early as possible during typical 3- to 6-month breast cancer treatments. We introduce and demonstrate an approach for predicting pCR within 10 days of initiating NAC. The method uses a bedside diffuse optical spectroscopic imaging (DOSI) technology and logistic regression modeling. Tumor and normal tissue physiological properties were measured longitudinally throughout the course of NAC in 33 patients enrolled in the American College of Radiology Imaging Network multicenter breast cancer DOSI trial (ACRIN-6691). An image analysis scheme, employing z-score normalization to healthy tissue, produced models with robust predictions. Notably, logistic regression based on z-score normalization using only tissue oxygen saturation (StO2) measured within 10 days of the initial therapy dose was found to be a significant predictor of pCR (AUCââ=ââ0.92; 95% CI: 0.82 to 1). This observation suggests that patients who show rapid convergence of tumor tissue StO2 to surrounding tissue StO2 are more likely to achieve pCR. This early predictor of pCR occurs prior to reductions in tumor size and could enable dynamic feedback for optimization of chemotherapy strategies in breast cancer
Neutrino Education, Outreach, and Communications Activities: Captivating Examples from IceCube
Galactic Core-Collapse Supernovae at IceCube: âFire Drillâ Data Challenges and follow-up
The next Galactic core-collapse supernova (CCSN) presents a once-in-a-lifetime opportunity to make astrophysical measurements using neutrinos, gravitational waves, and electromagnetic radiation. CCSNe local to the Milky Way are extremely rare, so it is paramount that detectors are prepared to observe the signal when it arrives. The IceCube Neutrino Observatory, a gigaton water Cherenkov detector below the South Pole, is sensitive to the burst of neutrinos released by a Galactic CCSN at a level >10Ï. This burst of neutrinos precedes optical emission by hours to days, enabling neutrinos to serve as an early warning for follow-up observation. IceCube\u27s detection capabilities make it a cornerstone of the global network of neutrino detectors monitoring for Galactic CCSNe, the SuperNova Early Warning System (SNEWS 2.0). In this contribution, we describe IceCube\u27s sensitivity to Galactic CCSNe and strategies for operational readiness, including "fire drill" data challenges. We also discuss coordination with SNEWS 2.0
All-Energy Search for Solar Atmospheric Neutrinos with IceCube
The interaction of cosmic rays with the solar atmosphere generates a secondary flux of mesons that decay into photons and neutrinos â the so-called solar atmospheric flux. Although the gamma-ray component of this flux has been observed in Fermi-LAT and HAWC Observatory data, the neutrino component remains undetected. The energy distribution of those neutrinos follows a soft spectrum that extends from the GeV to the multi-TeV range, making large Cherenkov neutrino telescopes a suitable for probing this flux. In this contribution, we will discuss current progress of a search for the solar neutrino flux by the IceCube Neutrino Observatory using all available data since 2011. Compared to the previous analysis which considered only high-energy muon neutrino tracks, we will additionally consider events produced by all flavors of neutrinos down to GeV-scale energies. These new events should improve our analysis sensitivity since the flux falls quickly with energy. Determining the magnitude of the neutrino flux is essential, since it is an irreducible background to indirect solar dark matter searches
TXS 0506+056 with Updated IceCube Data
Past results from the IceCube Collaboration have suggested that the blazar TXS 0506+056 is a potential source of astrophysical neutrinos. However, in the years since there have been numerous updates to event processing and reconstruction, as well as improvements to the statistical methods used to search for astrophysical neutrino sources. These improvements in combination with additional years of data have resulted in the identification of NGC 1068 as a second neutrino source candidate. This talk will re-examine time-dependent neutrino emission from TXS 0506+056 using the most recent northern-sky data sample that was used in the analysis of NGC 1068. The results of using this updated data sample to obtain a significance and flux fit for the 2014 TXS 0506+056 "untriggered" neutrino flare are reported
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