75 research outputs found
Occupational Therapists\u27 Perspectives on Psychosocial Treatment of Sexual Dysfunction with Mental Health Patients
Purpose: The purpose of this study is to investigate the perceptions of mental health occupational therapists about psychosocial treatment of sexual dysfunction with clients in psychiatric facilities.
Methods: Using qualitative methodology, student researchers interviewed six occupational therapists practicing in psychiatric settings as part of an exploratory study into the perceptions of clinicians about treatment of sexual dysfunction with people who have mental health disabilities. Semi-structured interviews utilized open-ended questions. Electronic recording of interviews was conducted and verbatim transcripts were created. Data was analyzed and emergent codes and themes were developed.
Results: Three themes emerged related to: scope of practice, perceived barriers, and client-centeredness during treatment in psychosocial practice.
Discussion: The results have implications for future practice among mental health practitioners treating sexual dysfunction. Occupational therapists agree it is within the scope of practice to address sexual dysfunction as it relates to the occupational therapy practice framework. However, therapists were not congruent about the actual implementation within their respective clinical practice settings. Treatment models that may be applicable to psychosocial settings are discussed
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An extensive bloom of the Nā-fixing cyanobacterium Trichodesmium erythraeum in the central Arabian Sea
We encountered an extensive surface bloom of the N, fixing cyanobactenum Trichodesrniurn erythraeum in the central basin of the Arabian Sea during the spring inter-monsooon of 1995. The bloom, which occurred dunng a period of calm winds and relatively high atmospheric iron content, was metabollcally active. Carbon fixation by the bloom represented about one-quarter of water column primary productivity while input by Nā flxation could account for a major fraction of the estimated 'new' N demand of primary production. Isotopic measurements of the N in surface suspended material confirmed a direct contribution of Nā fixation to the organic nltrogen pools of the upper water column. Retrospective analysis of NOAA-12 AVHRR imagery indicated that blooms covered up to 2 X 10ā¶ kmĀ², or 20% of the Arabian Sea surface, during the period from 22 to 27 May 1995. In addition to their biogeochemical impact, surface blooms of this extent may have secondary effects on sea surface albedo and light penetration as well as heat and gas exchange across the air-sea interface. A preliminary extrapolation based on our observed, non-bloom rates of Nā fixation from our limited sampling in the spring intermonsoon including a conservative estimate of the input by blooms, suggest Nā fixation may account for an input of about 1 Tg N yrā»Ā¹. This is substantial, but relatively minor compared to current estimates of the removal of N through denitrification in the basin. However, Nā fixation may also occur in the central basin through the mild winter monsoon, be considerably greater during the fall intermonsoon than we observed during the spring intermonsoon, and may also occur at higher levels in the chronically oligotrophic southern basin. Ongoing satellite observations will help to determine more accurately the distribution and density of Trichodesmium in this and other tropical oceanic basins, as well as resolving the actual frequency and duration of bloom occurrence
PAXIP1 and STAG2 converge to maintain 3D genome architecture and facilitate promoter/enhancer contacts to enable stress hormone-dependent transcription
How steroid hormone receptors (SHRs) regulate transcriptional activity remains partly understood. Upon activation, SHRs bind the genome together with a co-regulator repertoire, crucial to induce gene expression. However, it remains unknown which components of the SHR-recruited co-regulator complex are essential to drive transcription following hormonal stimuli. Through a FACS-based genome-wide CRISPR screen, we functionally dissected the Glucocorticoid Receptor (GR) complex. We describe a functional cross-talk between PAXIP1 and the cohesin subunit STAG2, critical for regulation of gene expression by GR. Without altering the GR cistrome, PAXIP1 and STAG2 depletion alter the GR transcriptome, by impairing the recruitment of 3D-genome organization proteins to the GR complex. Importantly, we demonstrate that PAXIP1 is required for stability of cohesin on chromatin, its localization to GR-occupied sites, and maintenance of enhancer-promoter interactions. In lung cancer, where GR acts as tumor suppressor, PAXIP1/STAG2 loss enhances GR-mediated tumor suppressor activity by modifying local chromatin interactions. All together, we introduce PAXIP1 and STAG2 as novel co-regulators of GR, required to maintain 3D-genome architecture and drive the GR transcriptional programme following hormonal stimuli.</p
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Highly scalable linear solvers on thousands of processors.
In this report we summarize research into new parallel algebraic multigrid (AMG) methods. We first provide a introduction to parallel AMG. We then discuss our research in parallel AMG algorithms for very large scale platforms. We detail significant improvements in the AMG setup phase to a matrix-matrix multiplication kernel. We present a smoothed aggregation AMG algorithm with fewer communication synchronization points, and discuss its links to domain decomposition methods. Finally, we discuss a multigrid smoothing technique that utilizes two message passing layers for use on multicore processors
Ribociclib induces broad chemotherapy resistance and EGFR dependency in ESR1 wildtype and mutant breast cancer
While endocrine therapy is highly effective for the treatment of oestrogen receptor-Ī± (ERĪ±)-positive breast cancer, a significant number of patients will eventually experience disease progression and develop treatment-resistant, metastatic cancer. The majority of resistant tumours remain dependent on ERĪ±-action, with activating ESR1 gene mutations occurring in 15ā40% of advanced cancers. Therefore, there is an urgent need to discover novel effective therapies that can eradicate cancer cells with aberrant ERĪ± and to understand the cellular response underlying their action. Here, we evaluate the response of MCF7-derived, CRISPR-Cas9-generated cell lines expressing mutant ERĪ± (Y537S) to a large number of drugs. We report sensitivity to numerous clinically approved inhibitors, including CDK4/6 inhibitor ribociclib, which is a standard-of-care therapy in the treatment of metastatic ERĪ±-positive breast cancer and currently under evaluation in the neoadjuvant setting. Ribociclib treatment induces senescence in both wildtype and mutant ERĪ± breast cancer models and leads to a broad-range drug tolerance. Strikingly, viability of cells undergoing ribociclib-induced cellular senescence is maintained via engagement of EGFR signalling, which may be therapeutically exploited in both wildtype and mutant ERĪ±-positive breast cancer. Our study highlights a wide-spread reduction in sensitivity to anti-cancer drugs accompanied with an acquired vulnerability to EGFR inhibitors following CDK4/6 inhibitor treatmen
Genome Sequence of Fusobacterium nucleatum Subspecies Polymorphum ā a Genetically Tractable Fusobacterium
Fusobacterium nucleatum is a prominent member of the oral microbiota and is a common cause of human infection. F. nucleatum includes five subspecies: polymorphum, nucleatum, vincentii, fusiforme, and animalis. F. nucleatum subsp. polymorphum ATCC 10953 has been well characterized phenotypically and, in contrast to previously sequenced strains, is amenable to gene transfer. We sequenced and annotated the 2,429,698 bp genome of F. nucleatum subsp. polymorphum ATCC 10953. Plasmid pFN3 from the strain was also sequenced and analyzed. When compared to the other two available fusobacterial genomes (F. nucleatum subsp. nucleatum, and F. nucleatum subsp. vincentii) 627 open reading frames unique to F. nucleatum subsp. polymorphum ATCC 10953 were identified. A large percentage of these mapped within one of 28 regions or islands containing five or more genes. Seventeen percent of the clustered proteins that demonstrated similarity were most similar to proteins from the clostridia, with others being most similar to proteins from other gram-positive organisms such as Bacillus and Streptococcus. A ten kilobase region homologous to the Salmonella typhimurium propanediol utilization locus was identified, as was a prophage and integrated conjugal plasmid. The genome contains five composite ribozyme/transposons, similar to the CdISt IStrons described in Clostridium difficile. IStrons are not present in the other fusobacterial genomes. These findings indicate that F. nucleatum subsp. polymorphum is proficient at horizontal gene transfer and that exchange with the Firmicutes, particularly the Clostridia, is common
A Critical Analysis of the Food Industry and Proposed Local Solutions
A Critical Analysis of the Food Industry and Proposed Local Solutions The agriculture industry has consequences on the environment and human health through the production, consumption, transportation and disposal processes. By eating locally and seasonally, communities can help mitigate these consequences. We used three approaches to explore how to mitigate the negative consequences of industrial agriculture at a local level: a community garden, informational website, and a community outreach event. These initiatives aim to promote conscious purchasing, consumption, and disposal of food on a local scale. By using the Logan Community in Spokane, WA as a case study, we hypothesized that bottom up approaches within local communities can be used to address large scale problems. Through these approaches we hope to encourage environmental stewardship, human health, and community awareness in regard to industrial agriculture
Complement factor H, vitronectin, and opticin are tyrosine-sulfated proteins of the retinal pigment epithelium.
Lack of tyrosine sulfation of ocular proteins results in disorganized photoreceptor structure and drastically reduced visual function, demonstrating the importance of this post-translational modification to vision. To understand the role that tyrosine sulfation plays in the function of ocular proteins, we identified some tyrosine-sulfated proteins in the retinal pigment epithelium using two independent methods, immuno-affinity column purification with an anti-sulfotyrosine specific antibody and computer-based sequence analysis of retinal pigment epithelium secretome by means of the prediction program Sulfinator. Radioactive labeling followed by thin layer electrophoresis revealed that three proteins, vitronectin, opticin, and complement factor H (CFH), were post-translationally modified by tyrosine sulfation. The identification of vitronectin and CFH as tyrosine-sulfated proteins is significant, since both are deposited in drusen in the eyes of patients with age-related macular degeneration (AMD). Furthermore, mutations in CFH have been determined to be a major risk factor in the development of AMD. Future studies that seek to understand the role of CFH in the development of AMD should take into account the role that tyrosine sulfation plays in the interaction of this protein with its partners, and examine whether modulating sulfation provides a potential therapeutic target
Real-time recording of annuloplasty suture dehiscence reveals a potential mechanism for dehiscence cascade
Characterization of atmospheric ammonia emissions from a commercial chicken house on the delmarva peninsula
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