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343 Endogenous double-stranded RNA is a potential target for psoriasis therapy. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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160 Emergency Medicine Attending Physician Performance of Pigtail and Thoracostomy Tube Insertion in a Simulated Environment. Ann Emerg Med 2022. [DOI: 10.1016/j.annemergmed.2022.08.184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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74P Management of early-stage hormone receptor-positive (HR+), human epidermal growth factor receptor 2-negative (HER2-) breast cancer in a real-word setting in Germany: A patient perspective. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.03.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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“It's always hard being a mom, but the pandemic has made everything harder”: A qualitative exploration of the experiences of perinatal women during the COVID-19 pandemic. Midwifery 2022; 109:103313. [PMID: 35334379 PMCID: PMC8923714 DOI: 10.1016/j.midw.2022.103313] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 03/07/2022] [Accepted: 03/14/2022] [Indexed: 11/30/2022]
Abstract
Background Understanding the psychosocial impacts of the COVID-19 pandemic in vulnerable groups, such as pregnant and parenting women, is a critical research and clinical imperative. Although many survey-based perinatal health studies have contributed important information about mental health, few have given full voice about the experiences of pregnant and postpartum women during the prolonged worldwide pandemic using a qualitative approach. Objective The purpose of this study is to explore the lived experience of pregnant and postpartum women in the United States during the ongoing COVID-19 pandemic. Design Qualitative phenomenological study. Setting This study was conducted in the community, by recruiting women throughout the U.S. Participants Fifty-four pregnant and postpartum women participated in qualitative interviews. Methods Data from one-on-one semi-structured interviews were analyzed using a team-based phenomenological qualitative approach. Results Two key themes were apparent: the pandemic has shined a light on the many typical struggles of motherhood; and, there is a lack of consistent, community-based or healthcare system resources available to address the complex needs of pregnant and postpartum women, both in general and during the pandemic. Conclusions Going forward, as the world continues to deal with the current pandemic and possible future global health crises, health care systems and providers are encouraged to consider the suggestions provided by these participants: talk early and often to women about mental health; help pregnant and postpartum women create and institute a personal plan for early support of their mental health needs and create an easily accessible mental health network; conceptualize practice methods that enhance coping and resilience; practice in community-based and interdisciplinary teams (e.g., midwives, doulas, perinatal social workers/ psychotherapists) to ensure continuity of care and to foster relationships between providers and pregnant/ postpartum women; and consider learning from other countries’ successful perinatal healthcare practices. Registration Number (& date of first recruitment): not applicable. Tweetable abstract Pregnant and postpartum women insist that mental health care must be overhauled, stating the pandemic has highlighted inherent cracks in the system.
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185P Receipt of neoadjuvant treatment (NADJ) and impact of types of surgery on health-related quality of life (HRQoL) among patients (pts) with early stage HR+/HER2- breast cancer (BC). Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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1753P REarranged during Transfection [RET] gene fusion testing patterns for patients [pts] with papillary thyroid cancer [PTC] across five European countries. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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1752P Characteristics and treatment [tx] patterns in patients [pts] with medullary thyroid cancer [MTC] with and without REarranged during Transfection [RET] mutations in Europe. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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160P The relationship between employment status, work productivity and activity impairment (WPAI) and health-related quality of life (HRQoL) for patients (pts) with HR+/HER2- early stage breast cancer (BC). Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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1751P Real-world study of REarranged during Transfection [RET] testing in patients [pts] with medullary thyroid cancer [MTC] in Europe [EU5]. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Real-world clinical profile, treatment patterns and patient-reported outcomes in a subset of HR+/HER2- advanced breast cancer patients with poor prognostic factors: data from an international study. ESMO Open 2021; 6:100226. [PMID: 34371379 PMCID: PMC8358418 DOI: 10.1016/j.esmoop.2021.100226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 07/02/2021] [Accepted: 07/06/2021] [Indexed: 11/15/2022] Open
Abstract
Background Patients with hormone receptor-positive (HR+), human epidermal growth factor receptor 2-negative (HER2−) advanced breast cancer (ABC) and disease-related poor prognostic factors are not well characterized. We aimed to describe patient demographics, disease characteristics, treatment patterns and patient-reported outcomes in a subset of HR+/HER2− ABC patients with these factors [at the time when cyclin-dependent kinase (CDK) 4 and 6 inhibitors were being introduced] and understand how these factors informed treatment decisions at the time of the survey. Methods Real-world data were derived from a large, multinational, point-in-time survey of oncologists and their consulting patients with HR+/HER2− ABC in the EU5 and USA over March-June 2017, at the start of the changing treatment landscape. Analysis focused on four poor prognostic factors: visceral metastases, liver metastases (subset of visceral metastases), progesterone receptor-negative status and high tumor grade. Results In total, 2259 patients with HR+/HER2− ABC had records eligible for this analysis. At least one poor prognostic factor was present in 63% of patients (most common visceral metastases; least common progesterone receptor-negative status), with varying degrees of overlap between factors. For physician-reported outcomes, pain increased, whereas performance status and activities of daily living declined with presence of poor prognostic factors, especially liver metastases. No clear trends were observed for patient-reported outcomes. Treatment with combined endocrine therapy plus CDK4 and 6 inhibitors was infrequent, as these agents were entering the market. Conclusions More than 60% of the HR+/HER2− ABC Adelphi Real World Disease Specific Programme™ sample had ≥1 disease-related poor prognostic factor, and patients appeared to be heterogeneous regarding occurrence and distribution of these factors. These patients typically have increased pain and reduced performance status, highlighting the importance of implementing effective therapy with CDK4 and 6 inhibitors. Future studies could inform how the treatment landscape has evolved over time with respect to patients with poor prognostic factors. Some 63% of HR+/HER2− ABC patients in this sample had ≥1 disease-related factors more likely to confer a poorer prognosis Patients with these factors typically had increased pain and reduced performance status Chemotherapy was prescribed more frequently in patients with poor prognostic factors Introduction of CDK4 and 6 inhibitors saw more patients with poor prognostic factors receive endocrine therapy-based regimens This study is a baseline to understand the impact of these new treatments on prognosis and aggressive disease
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Real-world study on HR+, HER2−, node-positive, high-risk early breast cancer (EBC) in France: patient profiles, management and treatment patterns. Breast 2021. [DOI: 10.1016/s0960-9776(21)00135-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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239P Impact of clinical characteristics, patients' perception of treatment goals and endocrine therapy history on HRQOL in HR+, HER2- early stage breast cancer patients. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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314P Real-world (RW) multi-country study of BRCA1/2 testing in adult patients (pts) with HER2−advanced breast cancer (ABC). Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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87P Patient-reported and cancer-specific health-related quality of life among patients with early stage HR+/HER2- breast cancer (BC). Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.03.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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82P A multinational study of real-world treatment patterns among patients with early stage HR+/HER2- breast cancer (BC). Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.03.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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158P Patient (pt) demographics, treatment patterns (tx) and hematologic (heme) toxicities among pts with HER2− advanced breast cancer (ABC) and BRCA1/2 mutation(s) (BRCA1/2mut): A multi-country real-world (RW) study. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.03.258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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157P Germline BRCA1/2 (gBRCA1/2) testing patterns among oncologists (ONC) treating HER2- advanced breast cancer (ABC): Results from a multi-country real-world study. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.03.257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Adherence to ESMO 2014 guidelines on bone-targeting agent (BTA) initiation for breast and prostate cancer patients: Real-world insights from practicing European physicians. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz265.038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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BRCA1/2 testing in HER2- advanced breast cancer (ABC): Results from the European component of a multi-country real-world study. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz241] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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399 Distinct gene expression signatures differentiate clinical response to ustekinumab compared to adalimumab in psoriasis. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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BRCA status, treatment patterns and outcomes in HER2- advanced breast cancer (ABC): A multi-country real-world study. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz100.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Impact of BRCA1/2 mutations status on patient reported outcomes in HER2- advanced breast cancer: Results from a multi-country real-world study. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz100.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Real-world productivity, healthcare resource utilization (HRU), and quality of life (QOL) in patients with advanced gastric cancer (GC) in Korea and Japan. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx660.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Real-world advanced gastric cancer treatment patterns in Western and Asian countries. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx660.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Generating patient reported outcome norms for an EU cancer population using real world data (FACT-G). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx385.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Real-world productivity, healthcare resource utilization (HRU), and quality of life (QOL) in patients with advanced gastric cancer (GC) in Canada and Europe. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx440.044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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1527 Bone Targeting Agent (BTA) treatment patterns and the impact of Bone Metastases (BM) on prostate cancer patients in a real world setting. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30617-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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1523 Bone Targeting Agent (BTA) treatment patterns and the impact of Bone Metastases (BMs) on advanced breast cancer patients in a real world setting. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30613-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Impact of Brain Metastases on Quality of Life and Estimated Life Expectancy in Patients with Advanced Non-Small Cell Lung Cancer. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2014; 17:A650. [PMID: 27202347 DOI: 10.1016/j.jval.2014.08.2364] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
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Emergent global motion. J Vis 2011. [DOI: 10.1167/11.11.35] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Parents as practitioners in pediatrics. MEDICAL TEACHER 2010; 32:620. [PMID: 20684060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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Discordant responses on starting highly active antiretroviral therapy: suboptimal CD4 increases despite early viral suppression in the UK Collaborative HIV Cohort (UK CHIC) Study. HIV Med 2009; 11:152-60. [PMID: 19732175 DOI: 10.1111/j.1468-1293.2009.00755.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Patients starting highly active antiretroviral therapy (HAART) may have a suboptimal CD4 increase despite rapid virological suppression. The frequency and the significance for patient care of this discordant response are uncertain. This study was designed to determine the incidence of a discordant response at two time-points, soon after 6 months and at 12 months, and to determine the relationship with clinical outcomes. METHODS Data obtained in the UK Collaborative HIV Cohort Study were analysed. A total of 2584 treatment-naïve patients starting HAART with HIV viral load (VL) > 1000 HIV-1 RNA copies/mL at baseline and < 50 copies/mL within 6 months were included in the analysis. Patients were classified at either 6-10 (midpoint 8) months or 10-14 (midpoint 12) months as having a discordant (CD4 count increase < 100 cells/microL from baseline) or concordant response (CD4 count increase >or= 100 cells/microL). RESULTS Discordant responses occurred in 32.1% of patients at 8 months and in 24.2% at 12 months; 35% of those discordant at 8 months were concordant at 12 months. A discordant response was associated with older age, lower baseline VL, and (at 12 months) higher baseline CD4 cell count. In a multivariate analysis it was associated with an increased risk of death, more strongly at 12 months [incidence rate ratio (IRR) 3.35, 95% confidence interval (CI) 1.73-6.47, P < 0.001] than at 8 months (IRR 2.08, 95% CI 1.19-3.64, P = 0.010), but not with new AIDS events. CONCLUSIONS Discordant responders have a worse outcome, but assessment at 12 months may be preferred, given the number of 'slow' responders. Management strategies to improve outcomes for discordant responders need to be investigated.
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Genetic determinants on rat chromosome 6 modulate variation in the hypercapnic ventilatory response using consomic strains. J Appl Physiol (1985) 2005; 98:1630-8. [PMID: 15661838 DOI: 10.1152/japplphysiol.01148.2004] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
To understand the genetic basis of pathways involved in the control of breathing, a large scale, high-throughput study using chromosomal substitution strains of rats is underway. Eight new consomic rat stains (SS-2(BN), SS-4(BN), SS-6(BN), SS-7(BN), SS-8(BN), SS-11(BN), SS-12(BN), SS-14(BN), SS-Y(BN)), containing one homozygous BN/NHsdMcwi (BN) chromosome on a background of SS/JrHsdMcwi (SS), were created by PhysGen (http://pga.mcw.edu) Program for Genomic Applications. Male and female rats were studied using standard plethysmography under control conditions and during acute hypoxia (inspired oxygen fraction = 0.12) and hypercapnia (inspired CO(2) fraction = 0.07). The rats were also studied during treadmill exercise. Both male and female BN rats had a significantly lower ventilatory response during 7% CO(2) compared with SS rats of the same gender. SS-6(BN) female rats had a significantly reduced ventilatory response, similar to BN rats due primarily to a reduced tidal volume. Male SS-6(BN) rats had a significantly reduced tidal volume response to hypercapnia but a slightly increased frequency response during hypercapnia. Gene(s) on the Y chromosome may play a role in this increased frequency response in the male rats because the SS-Y(BN) hypercapnic ventilatory response involves a significantly increased frequency response. Several chromosomal substitutions slightly altered the ventilatory responses to hypoxia and exercise. However, genes on chromosomes 6 and Y of those studied are of primary importance in aspects of ventilatory control currently studied.
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Abstract
We evaluated the baseline serum levels of beta carotene, total carotenoids, vitamin A and E, and retinol-binding protein among 156 initially healthy men who participated in the Multiple Risk Factor Intervention Trial (MRFIT) and who subsequently died of cancer and 311 controls individually matched for age, smoking status, randomization group, date of randomization, and clinical center. Both total carotenoids and beta carotene levels were lower in the 66 lung cancer cases than in their matched controls. For all cancer deaths combined, there were no significant differences in total carotenoids or beta carotene between cases and controls. The relationship between lower serum carotenoid levels and lung cancer persisted after adjusting for the number of cigarettes, alcohol intake, serum thiocyanate levels, and cholesterol levels in the blood. Serum levels of retinol, alpha tocopherol, and retinol-binding protein were not related to any cancer site. The results of this study provide further evidence for a possible protective effect of beta carotene against lung cancer among cigarette smokers.
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Riding high. Interview by Tim Rice. Nurs Stand 1989; 3:43. [PMID: 2494486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Systemic lupus erythematosus in 49 Israeli males: a retrospective study. Clin Exp Rheumatol 1987; 5:233-40. [PMID: 3427838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Forty-nine male SLE patients, diagnosed and followed in seven medical centers in Israel between 1954 and 1983, were studied and analyzed retrospectively in order to determine whether the disease in males was clinically different from that reported in females both in Israel and in the world literature. The primary clinical and laboratory manifestations, the severity of the disease at the onset or at any time during the course of the disease, and the 1-15 year survival rates were not different from those described before in female SLE, although neurological involvement, nephritis, thrombocytopenia, vasculitis and hepatosplenomegaly were more prevalent in our series. However, more than half of the male patients (53%) had a benign course of disease characterized by long remissions requiring minimal or no medication. Long-term remission of serious renal involvement was observed completely in 14 and partially in 5 out of 33 patients. These results suggest that the male sex might alter the clinical course of SLE.
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Postnatal care. Midwifery after birth. NURSING TIMES 1985; 81:27-8. [PMID: 3848906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Whose pregnancy is it anyway? Interview by Mike McCormack. NURSING MIRROR 1982; 155:11. [PMID: 6921741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Abstract
Absorption of L-methionine was measured in all parts of the human small intestine using transintestinal intubation and perfusion. In four normal subjects, adsorption was higher in the proximal than in the distal intestine. In two patients with nontropical sprue in relapse, there was a proximal zone of low absorption with higher absorption distally. In all parts of the small intestine, absorption showed rate-limiting kinetics as methionine concentration was increased. In normal subjects, the proximal K(m) (Michaelis constant) was more than 3 times higher than the distal, which suggests a difference in transport mechanisms between the two segments.
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