61 results match your criteria: "Michael E. DeBakey Department of Veterans Affairs Medical Center[Affiliation]"

Article Synopsis
  • The PI3K/AKT and FGFR pathways are commonly activated in advanced prostate cancers, suggesting their role in cancer progression.
  • Research using castration-resistant prostate cancer samples revealed significant FGFR signaling component expression, with drug treatments showing reduced cancer cell invasion and growth, especially in combination therapies.
  • The combination of AKT and FGFR inhibitors demonstrated additive effects by blocking multiple signaling pathways, indicating a potential effective strategy for treating advanced prostate cancer.
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We compared two community-based HIV testing models among fisherfolk in Lake Victoria, Uganda. From May to July 2015, 1364 fisherfolk residents of one island were offered (and 822 received) home-based testing, and 344 fisherfolk on another island were offered testing during eight community mobilization events (outreach event-based testing). Of 207 home-based testing clients identified as HIV-positive (15% of residents), 82 were newly diagnosed, of whom 31 (38%) linked to care within 3 months.

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Non-Cell-Autonomous Regulation of Prostate Epithelial Homeostasis by Androgen Receptor.

Mol Cell

September 2016

Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX 77030, USA; Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX 77030, USA. Electronic address:

Prostate inflammation has been suggested as an etiology for benign prostatic hyperplasia (BPH). We show that decreased expression of the androgen receptor (AR) in luminal cells of human BPH specimens correlates with a higher degree of regional prostatic inflammation. However, the cause-and-effect relationship between the two events remains unclear.

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Background: In rodents, cholinesterase inhibitors can cause sustained decreases in the reinforcing effects of cocaine. Nonetheless, cocaine is metabolized by butyrylcholinesterase (BuChE), raising concerns that cholinesterase inhibition could increase its peripheral concentrations, perhaps augmenting toxicity. Although donepezil is approved for use in patients and selective for inhibiting acetylcholinesterase over BuChE, no studies have reported cocaine bioavailability in human subjects receiving donepezil.

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The role of Notch signaling in prostate cancer has not been defined definitively. Several large scale tissue microarray studies have revealed that the expression of some Notch signaling components including the Jagged1 ligand are upregulated in advanced human prostate cancer specimens. Jagged1 expressed by tumor cells may activate Notch signaling in both adjacent tumor cells and cells in tumor microenvironment.

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Background: UBE4B is an E3/E4 ubiquitin ligase whose gene is located in chromosome 1p36.22. We analyzed the associations of UBE4B gene and protein expression with neuroblastoma patient outcomes and with tumor prognostic features and histology.

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The ampulla of Vater is a complex cellular environment from which adenocarcinomas arise to form a group of histopathologically heterogenous tumors. To evaluate the molecular features of these tumors, 98 ampullary adenocarcinomas were evaluated and compared to 44 distal bile duct and 18 duodenal adenocarcinomas. Genomic analyses revealed mutations in the WNT signaling pathway among half of the patients and in all three adenocarcinomas irrespective of their origin and histological morphology.

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Reply.

Am J Obstet Gynecol

March 2016

Department of Obstetrics and Gynecology, Boston Medical Center, Boston, MA.

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Background: Benign prostatic hyperplasia (BPH) is characterized by increased tissue mass in the transition zone of the prostate, which leads to obstruction of urine outflow and significant morbidity in the majority of older men. Plasma markers of oxidative stress are increased in men with BPH but it is unclear whether oxidative stress and/or oxidative DNA damage are causal in the pathogenesis of BPH.

Methods: Levels of 8-OH deoxyguanosine (8-OH dG), a marker of oxidative stress, were measured in prostate tissues from normal transition zone and BPH by ELISA.

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Heparanase promotes tumor infiltration and antitumor activity of CAR-redirected T lymphocytes.

Nat Med

May 2015

1] Center for Cell and Gene Therapy, Baylor College of Medicine and Houston Methodist Hospital, Houston, Texas, USA. [2] Department of Pathology and Immunology, Baylor College of Medicine, Houston, Texas, USA. [3] Department of Medicine, Baylor College of Medicine, Houston, Texas, USA.

Adoptive transfer of chimeric antigen receptor (CAR)-redirected T lymphocytes (CAR-T cells) has had less striking therapeutic effects in solid tumors than in lymphoid malignancies. Although active tumor-mediated immunosuppression may have a role in limiting the efficacy of CAR-T cells, functional changes in T lymphocytes after their ex vivo manipulation may also account for the reduced ability of cultured CAR-T cells to penetrate stroma-rich solid tumors compared with lymphoid tissues. We therefore studied the capacity of human in vitro-cultured CAR-T cells to degrade components of the extracellular matrix (ECM).

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Castaways: addressing hostility and helplessness in severely lonely adults.

J Psychiatr Pract

March 2015

LOBOPRABHU and ASGHAR-ALI: Michael E. DeBakey Department of Veterans Affairs Medical Center and Baylor College of Medicine, Houston, TX; MOLINARI: University of South Florida, Tampa.

Hostility and helplessness are recurrent themes in severely lonely adults, and they can be both causes and effects of subjective feelings of loneliness. Since many lonely patients report a history of abuse, hostile and helpless states of mind may reflect identification with hostile (aggressor) or helpless (passive) attachment figures. Hostile intrusiveness and helpless withdrawal by the parent are 2 distinct patterns of parent-child misattunement that can lead to infant disorganization via disrupted emotional communication and to loneliness later in life.

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Dependency aspect of caregiver burden is uniquely related to cognitive impairment in Veterans.

J Rehabil Res Dev

November 2015

Mental Health Care Line, Michael E. DeBakey Department of Veterans Affairs Medical Center (MEDVAMC), Houston, TX, and Department of Educational Psychology, University of Houston, Houston, TX;

The psychosocial toll of caring for an individual with dementia is an important, if understudied, concept. For practitioners and researchers alike, understanding the relation between patient characteristics and different facets of caregiver burden is important for guiding treatment and prevention efforts. The current study analyzed the dimensions of caregiver burden and the relation between caregiver burden and results of neuropsychological testing.

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Increased Notch signalling inhibits anoikis and stimulates proliferation of prostate luminal epithelial cells.

Nat Commun

July 2014

1] Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas 77030, USA [2] Department of Pathology and Immunology, Baylor College of Medicine, Houston, Texas 77030, USA [3] Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, Texas 77030, USA.

The prostate epithelial lineage hierarchy remains inadequately defined. Recent lineage-tracing studies have implied the existence of prostate luminal epithelial progenitors with extensive regenerative capacity. However, this capacity has not been demonstrated in prostate stem cell activity assays, probably owing to the strong susceptibility of luminal progenitors to anoikis.

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Benign prostatic hyperplasia (BPH) is characterized by increased tissue mass in the transition zone of the prostate, which leads to obstruction of urine outflow and considerable morbidity in a majority of older men. Senescent cells accumulate in human tissues, including the prostate, with increasing age. Expression of proinflammatory cytokines is increased in these senescent cells, a manifestation of the senescence-associated secretory phenotype.

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T lymphocytes redirected against the chondroitin sulfate proteoglycan-4 control the growth of multiple solid tumors both in vitro and in vivo.

Clin Cancer Res

February 2014

Authors' Affiliations: Center for Cell and Gene Therapy; Departments of Pediatrics, Pathology and Immunology, and Medicine, Interdepartmental Program in Translational Biology and Molecular Medicine, Baylor College of Medicine; Houston Methodist Hospital and Texas Children's Hospital; Department of Surgery, Michael E. DeBakey Department of Veterans Affairs Medical Center; Dan L. Duncan Cancer Center Division of Biostatistics, Baylor College of Medicine, Houston, Texas; and Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts.

Purpose: Because of its high expression on various types of tumors and its restricted distribution in normal tissues, chondroitin sulfate proteoglycan-4 (CSPG4) represents an attractive target for the antibody-based therapy of several solid tumors. We tested whether T cells transduced with a CSPG4-specific chimeric antigen receptor (CAR) inhibited the growth of CSPG4-expressing tumor cells both in vitro and in vivo.

Experimental Design: We first independently validated by immunohistochemistry (IHC) the expression of CSPG4 in an extensive panel of tumor arrays and normal tissues as well as queried public gene expression profiling datasets of human tumors.

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Purpose: Marked reactive stroma formation is associated with poor outcome in clinically localized prostate cancer. We have previously identified genes with diverse functions that are upregulated in reactive stroma. This study tests the hypothesis that expression of these genes in stromal cells enhances prostate cancer growth in vivo.

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The TMPRSS2/ERG (T/E) fusion gene is present in the majority of all prostate cancers (PCa). We have shown previously that NF-kB signaling is highly activated in these T/E fusion expressing cells via phosphorylation of NF-kB p65 Ser536 (p536). We therefore hypothesize that targeting NF-kB signaling may be an efficacious approach for the subgroup of PCas that carry T/E fusions.

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Endocrine fibroblast growth factor FGF19 promotes prostate cancer progression.

Cancer Res

April 2013

Department of Pathology and Immunology and Michael E. DeBakey Department of Veterans Affairs Medical Center, Baylor College of Medicine, Houston, TX 77030, USA.

Prostate cancer is the most common visceral malignancy and the second leading cause of cancer deaths in US men. There is broad evidence that fibroblast growth factor (FGF) receptors are important in prostate cancer initiation and progression, but the contribution of particular FGFs in this disease is not fully understood. The FGF family members FGF19, FGF21, and FGF23 comprise a distinct subfamily that circulate in serum and act in an endocrine manner.

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Consumers' various and surprising responses to direct-to-consumer advertisements in magazine print.

Patient Prefer Adherence

February 2013

Department of Sociology, University of Houston - Clear Lake, Houston ; Houston VA Health Services Research and Development Center of Excellence, Michael E DeBakey Department of Veterans Affairs Medical Center, Baylor College of Medicine, Houston ; Section on Health Services Research, Baylor College of Medicine, Houston.

Direct-to-consumer advertising (DTCA) is ubiquitous in media outlets, but little is known about the ways in which consumers' values, needs, beliefs, and biases influence the perceived meaning and value of DTCA. This article aims to identify the taxonomy of readership categories that reflect the complexity of how health care consumers interact with DTCA, with particular focus on individuals' perceptions of print DTCA in popular magazines. Respondent-driven sampling was used to recruit 18 male and female magazine readers and 18 male and female prescription medication users aged 18-71 years.

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Factors shaping physicians' willingness to accommodate medication requests.

Eval Health Prof

September 2014

Health Services Research and Development Center of Excellence, Michael E. DeBakey Department of Veterans Affairs Medical Center, Houston, TX, USA Department of Medicine-Section on Health Services Research, Baylor College of Medicine, Houston, TX, USA.

Medical decisions, including physicians' prescribing behaviors, are shaped by a complex interplay of clinical and nonclinical factors. We aim to determine how physician, patient, and relationship characteristics influence physicians' decisions to accommodate brand-name prescription drug requests. We applied multivariate logistic regression to data from the Attitudinal and Behavioral Effects of Direct-to-Consumer Promotion of Prescription Drugs physician survey.

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Highly specific targeting of the TMPRSS2/ERG fusion gene using liposomal nanovectors.

Clin Cancer Res

December 2012

Department of Pathology and Immunology and Michael E. DeBakey Department of Veterans Affairs Medical Center, Baylor College of Medicine, Houston, Texas 77030, USA.

Article Synopsis
  • The TMPRSS2/ERG (T/E) fusion gene, found in about 50% of prostate cancer tumors, expresses fusion mRNAs that serve as specific targets for cancer treatment.
  • Researchers designed siRNAs to specifically target the most common junctional isoforms of the T/E fusion gene, with in vitro tests showing them to be effective at inhibiting prostate cancer cell growth.
  • In vivo studies demonstrated that these siRNAs significantly reduced tumor growth without toxicity, suggesting that this targeted therapy could be a promising approach for treating prostate cancer.
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Background: The status and determinants of health-related quality of life (HRQOL) in female veterans with and without irritable bowel syndrome (IBS) are unknown.

Aim: To compare HRQOL in female veterans with and without IBS symptoms and examine the contribution of post-traumatic stress disorder, depression and anxiety to HRQOL.

Methods: A cross-sectional study of 339 female veterans.

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There are many important unanswered issues regarding the occurrence of cognitive impairment in physicians, such as detection of deficits, remediation efforts, policy implications for safe medical practice, and the need to safeguard quality patient care. The authors review existing literature on these complex issues and derive heuristic formulations regarding how to help manage the professional needs of the aging physician with dementia. To ensure safe standards of medical care while also protecting the needs of physicians and their families, state regulatory or licensing agencies in collaboration with state medical associations and academic medical centers should generate evaluation guidelines to assure continued high levels of functioning.

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