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PubMedDate not supplied

The lived experience of grieving for persons living with HIV who have used injection drugs.

Parse's research method was used to investigate the lived experience of grieving for 10 persons self-identified as HIV-positive injection drug users. These individuals compose an understudied and poorly understood population, and their grief experiences have rarely been documented. The losses grieved by persons living with HIV infection include the loss of life, friends, family members, employment, energy, and sex. The lived experience of grieving was found to be "overwhelming anguish that shapes hopes and intentions as a wretched aloneness is punctuated with cherished uplifting engagements, while gratitude inspires courage in the midst of ambiguity." This new conceptualization of the grieving process is discussed in light of Parse's human becoming theory of nursing.

Adult↗
PubMed1998

Effects of polyamine levels on the degradation of short-lived and long-lived proteins in cultured L-132 human lung cells.

Biogenic polyamines have important regulatory functions in various biological processes and it has also been suggested that they could modulate intracellular protein degradation. For an overall assessment of the role of polyamines in this process, we have investigated the effect that the decrease in intracellular polyamine levels caused by inhibitors of polyamine biosynthesis brings about on the degradation of the pools of short- and long-lived proteins in cultured L-132 human lung cells. Treatment of cells with 100 microM (2R,5R)-delta-methyl acetylenic putrescine (MAP), a potent enzyme-activated irreversible inhibitor of ornithine decarboxylase, or with 100 microM MAP plus 50 microM N-butyl 1,3-diaminopropane, a specific inhibitor of spermine synthase, caused a similar decrease (65-70% of control) in the total intracellular levels of polyamines, although they affected the concentrations of spermidine and spermine differently. The effect of the two treatments on protein degradation was essentially the same. In polyamine-depleted cells we observed an inhibition of degradation in long-lived proteins of 16% (P<0.05), with a significant increase in the half-life (t12) of this pool from 100.5 to 120.1 h. This was concomitant with an increase of 26% (P<0. 05) in degradation in short-lived proteins, with a significant decrease in the t12 of this pool from 0.85 to 0.67 h. Recovery of polyamine levels by the addition of 50 microM spermidine to polyamine-depleted cells resulted in a restoration of the degradation rates in both pools of proteins. The way(s) by which polyamines could modulate proteolysis are discussed.

Alkynes↗
PubMed1999

Theorizing about nurses' work lives: the personal and professional aftermath of living with healthcare 'reform'.

In this paper we discuss the impact of healthcare 'reform' on nurses' personal and professional lives. Using a thematic analysis, we interviewed 38 nurses in Nova Scotia, Canada regarding their experiences of job displacement, inability to find full-time employment and job losses. Their stories reflect how they lived day by day and the effects this had on their children, partners, friends and leisure, as well as their financial burdens. We theorize about the relationship between nurses' work and women's work, and particularly about women working in unstable conditions and the impact on their lives and that of the clients with whom they work.

Adaptation, Psychological↗
PubMed2001

Elderly persons' experiences of living with venous leg ulcer: living in a dialectal relationship between freedom and imprisonment.

The aim was to illuminate elderly persons' experiences of living with venous leg ulcer. Fifteen persons 74-89 years of age with active leg ulcer were interviewed. Data were analysed utilizing a phenomenological-hermeneutic approach inspired by Ricoeur. The analysis includes dialectic movement between understanding and explanation of the text as a whole and its parts. In the structural analysis four themes were identified: emotional consequences of altered body image, living a restricted life, achievement of well-being in connection with a painful wound and bandage, and struggle between hope and despair with regard to a lengthy healing process. The comprehensive understanding indicated that the meaning of living with venous leg ulcer can be understood as a dialectal relationship between, on the one hand the feeling of being imprisoned in the body, the bandage and the home, and on the other hand, hope of freedom from a burdensome body. The results indicate that the concept, body of image, is vitally relevant to the caring of elderly people with venous leg ulcer. The study shows the importance of recognizing the persons' perceptions of their leg ulcers and the impact of these perceptions on well-being. Nurses can thereby anticipate problems and provide more sensitive care.

Adaptation, Psychological↗
PubMed1980

"Living electrode" as a long-lived photoconverter for biophotolysis of water.

Living blue-green algae (Mastigocladus laminosus), immobilized on an SnO(2) optically transparent electrode with calcium alginate, functioned as an anodic photoelectrode on continuous illumination for periods of time adequate for use in a conventional electrochemical cell. This "living electrode" shows promise of use as a long-lived photoconverter of solar radiant energy to electric energy and as a suitable replacement for unstable chloroplast systems.

Journal Article↗
PubMed1998

The influence of live weight, live-weight change and diet on protein synthesis in the skin and skeletal muscle in young Merino sheep.

Wool growth is derived directly from protein synthesis in the skin of sheep, and is affected by the nutritional status of the animals. The present experiment examined both protein synthesis in the skin and muscle and wool growth in Merino lambs differing in live weight, intake and dietary protein source. The experiment was a 2(3) factorial design: twenty-four 5-month-old lambs initially weighing 33 kg (heavy) or 25 kg (light) were fed on a hay-based diet with either lupin seed or rapeseed meal as the major protein sources to maintain live weight (M) for 56 d, or were fed at 0.6 M for 28 d (period 1) followed by 28 d at 1.6 M (period 2). Fractional protein synthesis rates (FSR, % per d) in the skin and the m. longissimus dorsi on days 4 and 24 of period 1 and day 4 of period 2 were measured by means of a flooding dose of L-[ring-d5]phenylalanine, and wool growth on a skin patch over period 1 was also measured. The FSR ranged from 13.2 to 20.2% per d in the skin, higher than reported for other breeds, and 1.53-3.07% per d in the muscle. Sheep on the low intake (0.6 M) had significant reductions in FSR, protein content (g), protein synthesis (g/d) in the skin, and wool growth (g/d). The heavy lambs had similar FSR to the light lambs, but had a higher skin protein content and total protein synthesis per unit of skin area (100 cm2) and, therefore, grew more wool. The rapeseed-meal diet increased FSR and wool growth only in the light lambs over the short term. The protein deposited in wool over period 1 was 0.185 of the total protein synthesis in the skin, regardless of live weight, intake or diet, a result similar to other breeds. With the changes in dietary intake, protein synthesis in the skin and muscle responded differentially, with nutrient partitioning at sub-maintenance in favour of wool growth but at supra-maintenance, following a nutrient restriction, in favour of weight gain in young growing sheep.

Animal Nutritional Physiological Phenomena↗
PubMed1999

Genetic live vaccines mimic the antigenicity but not pathogenicity of live viruses.

The development of an effective HIV vaccine is both a pressing and a formidable problem. The most encouraging results to date have been achieved using live-attenuated immunodeficiency viruses. However, the frequency of pathogenic breakthroughs has been a deterrent to their development. We suggest that expression libraries generated from viral DNA can produce the immunologic advantages of live vaccines without risk of reversion to pathogenic viruses. The plasmid libraries could be deconvoluted into useful components or administered as complex mixtures. To explore this approach, we designed and tested several of these genetic live vaccines (GLVs) for HIV. We constructed libraries by cloning overlapping fragments of the proviral genome into mammalian expression plasmids, then used them to immunize mice. We found that inserting library fragments into a vector downstream of a secretory gene sequence led to augmented antibody responses, and insertion downstream of a ubiquitin sequence enhanced cytotoxic lymphocyte responses. Also, fragmentation of gag into subgenes broadened T-cell epitope recognition. We have fragmented the genome by sequence-directed and random methods to create libraries with different features. We propose that the characteristics of GLVs support their further investigation as an approach to protection against HIV and other viral pathogens.

AIDS Vaccines↗
PubMed1989

Elderly persons living alone: the effect of community context on living arrangements.

Current explanations of elderly household composition focus largely upon individual demographic, economic, and health characteristics and frequently ignore the effects of the community context within which elderly persons live. In this study, we incorporate the community context into an aggregate explanation of intermetropolitan variation in rates of living alone among elderly persons. We contend that three crucial community resources influence the rate of living alone: demographic and normative environment, economic affordability, and community social services. Data for Metropolitan Statistical Areas in the United States in 1980 provide initial support for this community-level explanation of elderly household composition.

Age Factors↗
PubMed1997

Analysis of long-lived radionuclidic impurities in short-lived radiopharmaceutical waste using gamma spectrometry.

Large hospitals and biomedical research centers utilize decay-in-storage programs to minimize the volume of their low level radioactive waste. However, some medically useful radionuclides often contain small amounts of long-lived radionuclidic impurities which may complicate simple waste management procedures. We have evaluated the extent of this problem in low level radioactive waste involving 67Cu and (111)In over a 6-mo cycle of decay-in-storage by identifying the residual radionuclides in our dry waste using a multichannel analyzer. The multichannel analyzer was also used to quantify the radionuclide constituents of our liquid waste at the beginning of a decay-in-storage cycle. Radionuclides were identified by the presence of characteristic photopeaks of each isotope in the gamma spectrum and quantified by region of interest analysis. After a decay-in-storage cycle, long-lived 58Co, 57Co, and 56Co isotopes were observed in dry 67Cu waste and (114m)In identified in dry (111)In waste. The (114m)In was detected in dry (111)In waste containing initial (114m)In activity of 740 kBq (20 microCi), while the cobalt radionuclides were detected in dry 67Cu waste containing initial 58Co, 57Co, and 56Co activities of 444, 148, and 148 kBq (12, 4, and 4 microCi), respectively. Such dry low level radioactive waste was thus disqualified from short-term radioactive waste storage programs. The radionuclide constituents in the liquid waste were quantified in microCi mL(-1) and confirmed to be within the Nuclear Regulatory Commission set limits of 2 x 10(-4), 6 x 10(-4) and 6 x 10(-5) microCi mL(-1) for 58Co, 57Co, and 56Co, respectively, before disposal. The highest levels of long-lived isotopes that have been found in our liquid low level radioactive waste at the beginning of decay-in-storage were 5.5 x 10(-4), 4.8 x 10(-4), and 1.4 x 10(-4) microCi mL(-1) for 58Co, 57Co, and 56Co, respectively. Gamma spectrometry can be used to aid waste segregation and final management decisions on low level radioactive waste.

Copper Radioisotopes↗
PubMed2005

To what extent does living in a group mean living with kin?

Chimpanzees live in large groups featuring remarkable levels of gregariousness and cooperation among the males. Because males stay in their natal communities their entire lives and are hence expected to be living with male relatives, cooperation is therefore assumed to occur within one large 'family' group. However, we found that the average relatedness among males within several chimpanzee groups as determined by microsatellite analysis is in fact rather low, and only rarely significantly higher than average relatedness of females in the groups or of males compared across groups. To explain these findings, mathematical predictions for average relatedness according to group size, reproductive skew and sex bias in dispersal were derived. The results show that high average relatedness among the philopatric sex is only expected in very small groups, which is confirmed by a comparison with published data. Our study therefore suggests that interactions among larger number of individuals may not be primarily driven by kin relationships.

Animals↗
PubMed2001

Living and training in moderate hypoxia does not improve VO2 max more than living and training in normoxia.

The objective of these experiments was to determine whether living and training in moderate hypoxia (MHx) confers an advantage on maximal normoxic exercise capacity compared with living and training in normoxia. Rats were acclimatized to and trained in MHx [inspired PO2 (PI(O2)) = 110 Torr] for 10 wk (HTH). Rats living in normoxia trained under normoxic conditions (NTN) at the same absolute work rate: 30 m/min on a 10 degrees incline, 1 h/day, 5 days/wk. At the end of training, rats exercised maximally in normoxia. Training increased maximal O2 consumption (VO2 max) in NTN and HTH above normoxic (NS) and hypoxic (HS) sedentary controls. However, VO2 max and O2 transport variables were not significantly different between NTN and HTH: VO2 max 86.6 +/- 1.5 vs. 86.8 +/- 1.1 ml x min(-1) x kg(-1); maximal cardiac output 456 +/- 7 vs. 443 +/- 12 ml x min(-1) x kg(-1); tissue blood O2 delivery (cardiac output x arterial O2 content) 95 +/- 2 vs. 96 +/- 2 ml x min(-1) x kg(-1); and O2 extraction ratio (arteriovenous O2 content difference/arterial O2 content) 0.91 +/- 0.01 vs. 0.90 +/- 0.01. Mean pulmonary arterial pressure (Ppa, mmHg) was significantly higher in HS vs. NS (P < 0.05) at rest (24.5 +/- 0.8 vs. 18.1 +/- 0.8) and during maximal exercise (32.0 +/- 0.9 vs. 23.8 +/- 0.6). Training in MHx significantly attenuated the degree of pulmonary hypertension, with Ppa being significantly lower at rest (19.3 +/- 0.8) and during maximal exercise (29.2 +/- 0.5) in HTH vs. HS. These data indicate that, despite maintaining equal absolute training intensity levels, acclimatization to and training in MHx does not confer significant advantages over normoxic training. On the other hand, the pulmonary hypertension associated with acclimatization to hypoxia is reduced with hypoxic exercise training.

Altitude↗
PubMed1991

The meaning of living with AIDS: a study using Parse's theory of man-living-health.

This paper explores the meaning of living with Acquired Immune Deficiency Syndrome (AIDS) using Parse's theory of man-living-health as the conceptual framework. The design of the study is based on the qualitative descriptive method. Analysis of the data gathered from interviews with fourteen subjects reveals the emergence of three themes related to the meaning of living with AIDS: (a) an abrupt shift in patterns of being give rise to changing priorities, (b) fluctuating possibilities arise in the uncertainty of being with and away from close others, and (c) changing hopes and dreams surface from the insights of suffering. Practice propositions were identified from the findings of the study.

Acquired Immunodeficiency Syndrome↗
PubMed2002

Struggling for a tolerable existence: the meaning of men's lived experiences of living with pain of fibromyalgia type.

Chronic pain is a major health problem in Sweden because of its consequences in daily life. Fourteen men with fibromyalgia-type pain were interviewed regarding their experiences. A phenomenological hermeneutic method was used to interpret the transcribed interviews. Three major themes emerged: experiencing the body as an obstruction, being a different man, and striving to endure. Overall, the meaning of men's lived experience of chronic pain was experienced as change in the body, self, and relationships. Striving to live life required achieving balance during both calm and difficult phases of the illness--struggling for a tolerable existence. Information from this study could provide guidelines for health care staff members to give empathic and supportive care to men living with a long-term illness.

Adaptation, Psychological↗
PubMed2002

Living on the outside looking in: a theory of living with advanced breast cancer.

Much of the literature on women's experiences of breast cancer relates to diagnosis and initial treatment. The aim of this research was to develop a theory to explain the meaning and experience of living with advanced breast cancer. A grounded theory approach was used and ten women under the care of one hospice explained their experiences during semi-structured interviews. The findings suggest that there are significant issues and difficulties facing women with advanced breast cancer, culminating in feelings of isolation and the experience of living with the fear of advancing disease. A theory, living on the outside looking in, was developed to explain the experiences of the participants. This integrates the following five categories: reconciling a different me; time bomb; media effect; professional waning; rescuers. The category 'reconciling a different me' was identified as the core variable and had an explicatory relationship to the other four categories. The findings raise issues regarding appropriate support.

Adaptation, Psychological↗
PubMed2000

Personal control and the ecology of community living settings: beyond living-unit size and type.

Personal control exercised by 74 adults from community living settings in Minnesota was evaluated. Comparisons between living-unit sizes or types controlled statistically for pre-existing differences in adaptive and challenging behavior. Individuals living semi-independently exercised more personal control than did residents of HCBS Waiver-funded settings, who had more personal control than persons from community ICFs/MR. Within the 1- to 5-person size range, size-related differences were detected in personal control. Using hierarchical regression, we found that personal characteristics, self-determination competencies, and environmental variables all made significant, unique contributions to predicting personal control. Path analysis also revealed that this range of variables was related to personal control. These findings strongly support an ecological approach to self-determination.

Adult↗
PubMed1991

Alienation of elderly Korean American immigrants as related to place of residence, gender, age, years of education, time in the U.S., living with or without children, and living with or without a spouse.

Dean's Alienation Scale (DAS) was administered to 137 Korean immigrants, aged sixty years or older, who had resided in the United States for at least one year but not more than fifteen years. The study was made in order to determine the relationship of alienation to the independent variables of place of residence (an ethnically homogeneous Korean community in Los Angeles vs. ethnically heterogeneous communities in Oklahoma), gender, age, years of education, time in the United States, living with or without children, and living with or without a spouse. Significant relationships (p less than .01) were found between one or more of the subscales of the DAS (powerlessness, normlessness, social isolation, and total alienation) and place of residence, age, time in the United States, and whether living with or without a spouse. Simultaneous regression analyses were performed to determine the relative contribution of the independent variables to each of the subscales.

Acculturation↗
PubMed2002

Live and let live.

The World AIDS Day was declared by WHO in 1988 and the theme is given for this day every year and for the year 2002-03 "Live and let live" is the specific theme. According to UNAIDS there are 40-50 million people living with HIV/AIDS globally. Stigma and discrimination are major obstacles to effective HIV/AIDS prevention. HIV remains unaffected by highly active antiretroviral therapy (HAART). The best hope for prevention of HIV rests on the development of a globally accessible vaccine. There are many complexities associated with conducting AIDS vaccine efficacy trials in the developing world.

AIDS Vaccines↗
PubMedDate not supplied

[Lead concentrations in breast milk of women living in urban areas compared with women living in rural areas].

In the last twenty years a great interest has grown up about the accumulation of lead in the environment, because many studies have found relationship between exposure to low lead doses and neuropsychological impairment of children. The Authors have measured and then compared the lead content of milk from women living in city-areas and women living in rural areas, not having professional lead exposure. 34 samples of women milk from the rural areas and 20 samples from the city areas were examined: the lead mean concentration of the rural areas milk samples was 45.62 microgr/l with a range from 0 to 425 microgr/l; the mean concentration of the city areas samples was 126.55 microgr/l with a range from 1 to 472 microgr/l. The data were compared with the Student t-test and the difference was statistically significant at p = 0.01. The Authors examine the correlations between environmental lead accumulation and increased lead concentration in woman milk, laying stress on the possible hazard to health and neuropsychological development of children, mostly of those living in urban areas with heavy road traffic and industrial activity.

Female↗