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Biomedical subjects

L Sorensen

Publications and source records attributed to L Sorensen.

15 recordsLinked to original sources
PubMed2006

Medication management at home: medication risk factor prevalence and inter-relationships.

BACKGROUND AND OBJECTIVE: Patients can have medication-related risk factors associated with poor health outcomes that become evident through visiting them in their homes. These medication-related risk factors may not be apparent in pharmacy and general practitioner (GP) records. The aim was to determine the prevalence and inter-relationships of medication-related risk factors for poor patient health outcomes identifiable through 'in-home' observations. METHODS: The design was a cross-sectional study of 204 general practice patients living in their own homes and at risk of medication-related poor health outcomes. Medication-related risk factors were identified in the patients' homes by community pharmacists and GPs. RESULTS AND DISCUSSION: The prevalence of risk factors varied from 8.3% (multiple medication storage locations) to 55.9% (confused by generic and trade names). There were many relationships observed between the medication-related risk factors, with expired medication having the most relationships with other risk factors followed by therapeutic duplication and poor adherence (9, 6 and 6 relationships respectively). CONCLUSION: Visiting patients' homes may identify medication-related risk factors not otherwise apparent through patient visits to the health practitioner when medications may be brought for review (i.e. 'brown bag' reviews).

Adult↗
PubMed1999

Decreased intracellular iron availability suppresses epithelial cell surface plasmin generation. Transcriptional and post-transcriptional effects on u-PA and PAI-1 expression.

Iron and iron metabolism are critical in a variety of physiologic and pathophysiologic processes, including lung injury and repair. The plasmin/plasminogen activator (PA) system is involved in the extensive remodeling process that follows acute lung injury, and alveolar epithelial cells play a key role in this repair process. Herein we report that decreased intracellular iron availability markedly suppresses cell-surface plasmin generation by A549 human carcinoma-derived pulmonary epithelial cells. This effect is mediated by concomitant downregulation of urokinase-type PA and upregulation of PA inhibitor-type 1 expression. Northern analyses, runoff transcription assays, and messenger RNA half-life experiments using actinomycin demonstrate that transcriptional and post-transcriptional mechanisms are operative. Given these potent in vitro effects on the plasmin/PA system, we speculate that adequate intracellular iron stores are important for successful repair of acute lung injury.

Biological Availability↗
PubMed1999

Health related behaviors and cancer screening of lesbians: results from the Boston Lesbian Health Project.

The purpose of this article is to present data on lesbian health-related and cancer screening behavior. This is an area in which not a great deal of data exist and which is particularly interesting in view of previous data suggesting that lesbians do not seek routine services because of a fear of homophobia. This paper discusses a portion of a larger survey completed by a national community-based lesbian sample. The results show that the lesbians in this sample have healthy behaviors in general and utilize routine health screening. There is some indication that alcohol use is heavier in this sample than among women in general, an area that warrants further investigation.

Adolescent↗
PubMed1997

Induction of urokinase-type plasminogen activator receptor by IL-1 beta.

Extensive tissue remodeling occurs in survivors of acute lung injury, leading to nearly normal histology and physiology in the majority of individuals, whereas others suffer significant impairment due to the development of pulmonary fibrosis. Alveolar epithelial cells play a central role in the repair process. They are strategically located to directly participate in the solubilization of intraalveolar fibrin deposits, and have the capacity to promote fibrinolysis. We have previously reported that interleukin-1 beta (IL-1 beta), an important inflammatory mediator in acute lung injury, upregulates urokinase-type plasminogen activator expression by human A549 cells (1). In this work, we show that IL-1 beta increases cell-surface plasmin generation, mediated in part by increased expression of urokinase receptor (u-PAR). Northern blot analyses demonstrated that IL-1 beta rapidly induces accumulation of u-PAR messenger RNA (mRNA) in a dose-dependent fashion, and that this effect is blocked by actinomycin. The IL-1 beta-mediated increase in u-PAR mRNA is inhibited by: (1) the relatively specific protein kinase C (PKC) inhibitors 1-(5-isoquinoline sulfonyl)-2-methylpiperazine (H7) and calphostin C; and (2) prolonged pretreatment of cells with phorbol myristate acetate (PMA), suggesting that PKC is an important component of the signaling pathway. Okadaic acid, an inhibitor of serine/threonine phosphatases, markedly potentiates the effect of IL-1 beta on u-PAR mRNA levels. In contrast, dexamethasone, in concentrations as low as 10(-8) M, completely blocks the IL-1 beta-mediated increase in u-PAR mRNA. Half-life experiments show that dexamethasone has no effect on u-PAR mRNA stability. Aldosterone, at concentrations in which it binds primarily to the mineralocorticoid receptor, has no effect on u-PAR expression, suggesting that the glucocorticoid effect is due to a transrepressive mechanism. In summary, IL-1 beta increases cell-surface plasmin generation in A549 cells by coordinately upregulating urokinase and u-PAR expression. Transcriptional activation of the u-PAR gene involves PKC-dependent mechanisms, and glucocorticoid suppression is probably due to interactions between the glucocorticoid receptor and another transcriptional activating system such as activator protein-1 (AP-1) and/or nuclear factor-kB (NF-kB).

Blotting, Northern↗
PubMed1997

Lesbian uses of and satisfaction with mental health services: results from Boston Lesbian Health Project.

In response to the dearth of specific information about lesbians' health status and practices in the health literature, a national study utilizing a self-administered questionnaire was conducted in 1987 by four associates of the Fenway Community Health Center in Boston to access data in these areas. The questionnaire solicited information about demographics, health practices, stress in personal and work lives, mental and physical health problems, sexual practices, family history of health related problems, and genetic attributes hypothesized to be related to "gayness." Questionnaires from 1,633 lesbian women provided the database for the study. This paper discusses the portion of the survey that dealt with mental health services and life experiences. Past studies that investigated mental health needs of lesbians focused on the quality of treatment by mental health providers, rates of suicide attempts, and alcoholism. This paper compares these past findings with the responses of the lesbians in this national, community-based study. Findings indicate that although a significant number of the lesbian women in this sample had been in therapy, they sought out therapy as a coping strategy to deal with similar issues as other women, i.e., depression and relationships. Suicide attempts decreased considerably after adolescence and "coming out." Rates of alcohol use and abuse, although difficult to compare with other studies, were higher than other women but similar to other studies investigating a community sample of lesbians. Even with a high family history of alcoholism, less than 5 percent reported having sought out therapy to deal with any issues of alcohol or drug use.

Adolescent↗
PubMed1995

Changing trends in healthcare: implications for baccalaureate education, practice and employment.

The authors surveyed 96 hospitals and agencies in Massachusetts to determine: 1) the effect of the changes in health care delivery on RN utilization, particularly baccalaureate nurses, and 2) to identify educational changes necessary to prepare baccalaureate nursing graduates for employment and practice in the future. An analysis of the results of the survey of the 50 nurse executives who responded to the study identifies the projected needs and requirements of the service sector for delivering nursing care, and translates them into suggestions for revisions of the baccalaureate curriculum.

Clinical Competence↗
PubMed1995

Lesbian health care: a review and recommendations for health promotion in primary care settings.

Lesbians are often "invisible" in primary care settings and literature. They frequently feel anxious, mistreated, and misunderstood by providers if they reveal their sexuality. Increasingly these women are "coming out" to providers and asking for knowledgeable and sensitive care. This article reviews the literature on lesbian health care and makes suggestions about history taking and health promotion that is sensitive to the needs of lesbian clients.

Female↗
PubMed1994

Callosal efficiency is related to sustained attention.

The purpose of this study was to determine whether there is a relationship between the efficiency of interhemispheric communication (IHC) and the ability to sustain attention. Children were tested on a vigilance task in which the amount of time between target presentations (interstimulus intervals; ISI) was varied. IHC was assessed by comparing within-field and between-field matches on a tachistoscopic task. Subjects who showed better IHC had faster RTs on the long ISI trials of the vigilance task, suggesting callosal involvement in the ability to sustain attention over a long period of time in the absence of sensory input.

Arousal↗
PubMed1990

Cocaine and pregnancy: a challenge for health care providers.

There is an alarming increase in the number of individuals using cocaine in this country. As many as 10 percent of all pregnant women have used cocaine one or more times during their pregnancy. The rising number of pregnant cocaine abusers who present themselves for medical services is creating a challenge for health care practitioners. This article addresses the biopsychosocial issues of cocaine abuse during pregnancy, including the medical impact of cocaine abuse on pregnant women and their newborn infants, behavioral manifestations of cocaine abusers that create health care management problems, and social work's contribution to the health care management of these women.

Adolescent↗
PubMed1987

Cytochemical demonstration of neuromelanin in black pigmented adrenal nodules.

Retrospective review of 363 consecutive autopsy reports in which adrenal examination was noted reveal 8 cases of pigmented adrenal nodules. Black pigmented adrenal nodules have been reported infrequently both as incidental autopsy findings and in association with Cushing's syndrome. The nature of the pigment in these lesions has been assumed to be lipofuscin. Gross and histologic study of seven cases and electron microscopic study of two cases suggest the presence of a neuromelanin component in the pigment, a previously unreported finding in the adrenal cortex. Review of the clinical records of the patients suggested no associations with specific underlying disorders. The prevalence the authors report (2.2%) is less than that of a previous prospective study.

Adolescent↗
PubMed1983

Binocular depth perception in the meerkat (Suricata suricatta).

Although it has been widely assumed that mammals with frontally placed eyes have stereoscopic vision, there is actually a paucity of supporting evidence. We have measured monocular and binocular depth perception in the meerkat (Suricata suricatta), obtaining strong evidence for the presence of stereopsis. The data provide additional evidence for the generality of stereoscopic vision across many different species.

Animals↗
PubMed1978

Plasma immunoreactive relaxin levels in pregnant and nonpregnant women.

Immunoreactive relaxin was measured in plasma samples obtained from human volunteers utilizing the RIA procedure of Sherwood et al., as modified by O'Byrne and Steinetz for heterologous plasma samples. Immunoreactive hormone was not detected in samples obtained from men, and only rarely in plasma of nonpregnant women. Immunoreactive relaxin was present as early as the fourth week of pregnancy and was detectable throughout the course of gestation. Immunoreactive relaxin tended to be higher early in pregnancy, and there was no peak just before parturition as occurs in many other species. Our results are at variance with those of Bryant and coworkers, who reported high levels of immunoreactive relaxin in men and nonpregnant as well as pregnant women. The possible reasons for this discrepancy are presented.

Contraceptives, Oral, Combined↗