Diagnoses of fear and anxiety: content validation for a burned patient

This study aimed at identifying and performing content validation of the defining characteristics of the diagnoses of fear and anxiety for a burned patient. An instrument made up of manifestations of both diagnoses presented by Taxionomy I of the North American Nursing Diagnoses Association was elaborated, as well as others that were found in the literature. Sixteen nurses were interviewed. Out of the 97 characteristics presented in the instrument, 31 were excluded for the diagnoses "fear", and 27 for "anxiety". Eight characteristics had a score average above 0.70 for "fear" and 18 for "anxiety". The characteristics with the highest score were "expressed concern due to changes in life events" for anxiety and "insomnia referred or perceived" for fear.     

Adipose tissue levels of organochlorine pesticides and polychlorinated biphenyls and risk of non-Hodgkin's lymphoma

In this nested case-control study we examined the relationship between non-Hodgkin's lymphoma (NHL) and organochlorine pesticide exposure. We used a data set originally collected between 1969 and 1983 in the U.S. Environmental Protection Agency National Human Adipose Tissue Survey. Adipose samples were randomly collected from cadavers and surgical patients, and levels of organochlorine pesticide residues were determined. From the original study population, 175 NHL cases were identified and matched to 481 controls; 173 controls were selected from accident victims, and 308 from cases with a diagnosis of myocardial infarction. Cases and controls were mainly from cadavers (> 96%) and were matched on sex, age, region of residence within the United States, and race/ethnicity. Conditional logistic regression showed the organochlorine pesticide residue heptachlor epoxide to be significantly associated with NHL [compared with the lowest quartile: third quartile odds ratio (OR) = 1.82, 95% confidence interval (CI), 1.01-3.28; fourth quartile OR = 3.41, 95% CI, 1.89-6.16]. The highest quartile level of dieldrin was also associated with elevated NHL risk (OR = 2.70; 95% CI, 1.58-4.61), as were higher levels of oxychlordane, p,p'-DDE [p,p'-1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene], and ss-benzene hexachloride (ORs = 1.79, 1.99, and 2.47, respectively). The p-values for trends for these associations were significant. In models containing pairs of pesticides, only heptachlor epoxide and dieldrin remained significantly associated with risk of NHL. Limitations of this study include collection of samples after diagnosis and a lack of information on variables affecting organochlorine levels such as diet, occupation, and body mass index. Given the persistence of pesticides in the environment, these findings are still relevant today.     

Association of retail tobacco marketing with adolescent smoking

A survey of 2125 middle-school students in central California examined adolescents' exposure to tobacco marketing in stores and its association with self-reported smoking. Two thirds of sixth-, seventh-, and eighth-grade students reported at least weekly visits to small grocery, convenience, or liquor stores. Such visits were associated with a 50% increase in the odds of ever smoking, even after control for social influences to smoke. Youth smoking rates may benefit from efforts to reduce adolescents' exposure to tobacco marketing in stores.     

Effectiveness of a quit and win contest with a low-income population

BACKGROUND: In a two-group quasi-experimental study, we evaluated the impact of a quit and win contest on quitting among low-income tobacco users and identified contest elements used by successful quitters. Low-income tobacco users have been largely untouched by tobacco cessation approaches. METHODS: A volunteer sample of 248 low-income tobacco users were recruited from quit and win contest registrants (treatment group). A random sample of 290 low-income tobacco users who had not entered the contest were recruited using random digit dialing (control group). Telephone interviews were conducted with both groups at baseline, 3, 6, and 12 months. Seven-day point prevalence measured self-reported quitting and urine cotinine assessed confirmed quitting. RESULTS: On average, quit and win study participants were 3.5 times more likely than controls to self-report quitting and 12.8 times more likely to demonstrate confirmed quitting after controlling for baseline differences in stage of change, age, education, and marital status. The use of specific contest elements was not related to successful quitting. CONCLUSIONS: The overall quit rates in the treatment group were higher than those in the control group. The results are promising given that low-income tobacco users are generally less likely to succeed in quitting.     

Free informed consent: the experience of Brazilian researchers in the area of fertility regulation

This study aimed to evaluate the experience of Brazilian researchers in relation to: assessment of the research protocol by a research ethics committee with the elaboration of a free informed term of consent (FITC) and the process of obtaining consent, as well as to verify whether the content and wording of the term of consent complies with Federal Ruling 196/96. Thirty-four researchers filled out a questionnaire and returned it by electronic mail. The vast majority of the respondents (91%) reported that the respective study protocol had been evaluated by a research ethics committee. More than half reported that they had received a previously prepared FITC; that consent from potential study subjects had been obtained by the researcher in charge; and that the subjects had received a copy of their signed FITC. Approximately one half of participants stated that the form of reimbursement of subjects was specified in the FITC, and 44% reported the same in relation to occasional damages resulting from the study. According to participants, in general the provisions of Ruling 196/96 had been met.     

Sudden illness and biographical flow in narratives of stroke recovery

The conceptual framework of biographical disruption has dominated studies into the everyday experience of chronic illness. Biographical disruption assumes that the illness presents the person with an intense crisis, regardless of other mitigating factors. However, our data suggests that the lives of people who have a particular illness that is notably marked by sudden onset are not inevitably disrupted. Extensive qualitative interviews were conducted with a sample of veteran non-Hispanic white, African-American, and Puerto Rican Hispanic stroke survivors, at one month, six months and twelve months after being discharged home from hospital. Narrative excerpts are presented to describe specific discursive resources these people use that offset the disrupting connotations of stroke. Our findings suggest a biographical flow more than a biographical disruption to specific chronic illnesses once certain social indicators such as age, other health concerns and previous knowledge of the illness experience, are taken into account. This difference in biographical construction of the lived self has been largely ignored in the literature. Treating all survivor experiences as universal glosses over some important aspects of the survival experience, resulting in poorly designed interventions, and in turn, low outcomes for particular people.     

Neurofibromatosis type 1 associated with central nervous system lymphoma

PURPOSE: To report the occurrence of central nervous system (CNS) lymphoma in a patients with neurofibromatosis type 1 (NF1). DESIGN: Interventional case report. METHODS: A 47-year-old male with a parieto-occipital lobe lesion was referred for ocular evaluation. Skin, brain, and vitreous biopsies were performed. RESULTS: The discovery of Lisch nodules of the iris prompted a physical examination that revealed cutaneous stigmata of NF1. Biopsy of the CNS lesion revealed diffuse large B-cell lymphoma. Biopsy of papules on the back and abdomen were compatible with neurofibroma. No malignant cells were found in the vitreous specimen. A clinical diagnosis of NF1 was made. CONCLUSION: This is the first report of CNS lymphoma in a patient with NF1. Additional reports may shed more light on the possible association between the two conditions.     

Effects of the selective COX-2 inhibitors celecoxib and rofecoxib on human vascular cells

Rheumatoid arthritis (RA) is associated with a reduced life expectancy considered to be partly caused by cardiovascular events. A growing concern is that accelerated atherosclerosis is driven by inflammatory mechanisms similar to those responsible for RA. Therefore, selective COX-2 inhibitors, which are widely used for the symptomatic treatment of pain and inflammation in RA, may have an impact on atherosclerotic processes. Their anti-inflammatory properties might provoke anti-atherogenic effects but on the other hand, selective inhibition of anti-thrombotic prostacyclin and COX-2 independent effects might promote the risk of increased prothrombotic activity. In the current study, the effects of the presently marketed selective COX-2 inhibitors celecoxib and rofecoxib on vascular cells have been investigated. Celecoxib inhibited the proliferation of human umbilical vein endothelial cells (HUVECs) in a concentration-dependent manner. At high concentrations, it induced apoptosis and the modulation of inhibitory cell cycle proteins. In contrast rofecoxib-even at high concentrations-had no effect on cell proliferation, apoptosis or cell cycle distribution indicating that celecoxib and rofecoxib do not affect the same signal transduction pathways in endothelial cells. Both drugs did not affect apoptosis induction or cell cycle proliferation in human vascular smooth muscle cells. The observed effects on endothelial cells appear to be COX-independent since both drugs selectively inhibited COX-2-activity and the applied concentrations lay beyond the IC(50) for inhibition of prostacyclin production. Regarding endothelial apoptosis as a relevant event in the initiation and progression of atherosclerosis the present data put forward the hypothesis that the presently marketed COX-2 inhibitors have a different impact on atherosclerotic processes.     

Differential effect of HERG blocking agents on cardiac electrical alternans in the guinea pig

Beat-to-beat alternations of the cardiac monophasic action potential, known as electrical alternans, were studied at drug concentrations that have known arrhythmogenic outcomes. Electrical alternans were elicited from the heart of anesthetized guinea pigs, both in the absence and presence of drugs that inhibit the delayed rectifier K(+) channel encoded by the human ether a-go-go related-gene (HERG), and are associated with the fatal arrhythmia, Torsade de Pointes. Two other HERG inhibiting drugs not associated with Torsade de Pointes were also studied. At concentrations known to be proarrhythmic, E-4031 and bepridil increased mean alternans 10 and 40 ms at pacing frequencies 相似文献   

Opioid receptors and acetaminophen (paracetamol)

We report that the acetaminophen (paracetamol)-induced spinal (intrathecal, i.t.)/supraspinal (intracerebroventricular, i.c.v.) site/site antinociceptive 'self-synergy' in mice is attenuated by the opioid receptor subtype selective antagonists beta-funaltrexamine hydrochloride (beta-FNA; mu), naltrindole (delta), and nor-binaltorphine hydrochloride (nor-BNI; kappa). These findings further implicate endogenous opioids (viz., endorphins, enkephalins, and dynorphins) and their pathways as contributors to the central antinociceptive action of acetaminophen.