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| 2. |
- Larsen, Joacim, et al.
(författare)
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Symptom occurrence, symptom intensity, and symptom distress in patients undergoing high-dose chemotherapy with stem-cell transplantation
- 2004
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Ingår i: Cancer Nursing. - Baltimore Maryland : Ovid Technologies (Wolters Kluwer Health). - 0162-220X .- 1538-9804. ; 27:1, s. 55-64
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Tidskriftsartikel (refereegranskat)abstract
- The main aim of this study was to investigate the patients' self-reported symptom occurrence, symptom intensity (SI), and symptom distress (SD) from admission for stem-cell transplantation (SCT) until discharge from the ward. Forty-three patients participated and data were collected at 7 different time-points by using the self-administered Symptom Frequency, Intensity, and Distress questionnaire for SCT (SFID-SCT). The results showed that symptom occurrence followed a curve on which the highest frequencies of symptoms were reported from the day of the SCT (T2) until the end of the protective care period (T5). The mean SI and SD scores became higher when the number of reported symptoms increased. Between T2 and T5, 33% to 54% of the patients reported >10 simultaneous symptoms. Symptoms reported by more than 50% of the patients during T2-T5 were tiredness, loss of appetite, mouth dryness, nausea, sleeping disturbances, diarrhea, and changes of taste. Loss of appetite, tiredness, and mouth dryness were, in descending order, the 3 symptoms reported as most intense and distressing. A statistically significantly higher SD-score was found for the patients undergoing allogeneic SCT on the day before start of the conditioning regimen, as compared to the patients undergoing autologous SCT. Patients reporting no anxiety on admission were found to have higher, mean SD-scores at the end of the hospital stay than anxious patients. The SFID-SCT questionnaire was found to give useful information not only about symptom occurrence but also about SI and SD. To use an instrument that distinguishes between these aspects of the symptom experience may help health care professionals to support the patients through the SCT-process.
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| 3. |
- Larsen, Joacim, et al.
(författare)
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Symptom distress, functional status and health-related quality of life before high-dose chemotherapy with stem-cell transplantation
- 2003
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Ingår i: European Journal of Cancer Care. - Oxford : Hindawi Limited. - 0961-5423 .- 1365-2354. ; 12:1, s. 71-80
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Tidskriftsartikel (refereegranskat)abstract
- The aims of this study were to describe how a group of patients with different malignant diseases perceived symptom distress (SD), functional status (FS) and health-related quality of life (HRQOL) on admission to the hospital for stem-cell transplantation (SCT), to compare the obtained data regarding FS and HRQOL with similar data from two general-population groups, and to relate the results to disease- and treatment-specific data. Fifty-one patients participated in the study. Three instruments were used to collect data: SFID-SCT, SIP and SWED-QUAL. The majority of the patients (92%) reported ongoing symptoms even before the SCT with tiredness (67%) and anxiety (53%) as the two most commonly reported symptoms. Although tiredness and anxiety were reported to be the most frequently occurring symptoms, these symptoms were not considered to cause that much distress. Instead, vomiting, reduced mobility and fever, although less commonly occurring, were reported as highly distressing when present. Compared with the general-population groups, the patients reported significantly poorer FS and HRQOL but no statistically significant correlations were found between SD, FS or HRQOL and the time since the last chemotherapy cycle or cycles respectively. Patients with advanced disease and patients with multiple myeloma were found to report more SD and poorer FS and HRQOL.
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- Sahlin, Kent, et al.
(författare)
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No evidence of an intracellular lactate shuttle in rat skeletal muscle.
- 2002
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Ingår i: Journal of Physiology. - : Wiley. - 0022-3751 .- 1469-7793. ; 541:Pt 2, s. 569-74
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Tidskriftsartikel (refereegranskat)abstract
- The concerted view is that cytosolic pyruvate is transferred into mitochondria and after oxidative decarboxylation further metabolized in the tricarboxylic acid cycle. Recently this view has been challenged. Based on experimental evidence from rat skeletal muscle it has been concluded that mitochondria predominantly oxidize lactate in vivo and that this constitutes part of an 'intracellular lactate shuttle'. This view appears to be gaining acceptance in the scientific community and due to its conceptual importance, confirmation by independent experiments is required. We have repeated the experiments in mitochondria isolated from rat soleus muscle. Contrary to the previously published findings we cannot find any mitochondrial respiration with lactate. Analysis of lactate dehydrogenase (LDH) by spectrophotometry demonstrated that the activity in the mitochondrial fraction was only 0.7 % of total activity. However, even when external LDH was added to mitochondria, there were no signs of respiration with lactate. In the presence of conditions where lactate is converted to pyruvate (external additions of both LDH and NAD(+)), mitochondrial oxygen consumption increased. Furthermore, we provide theoretical evidence that direct mitochondrial lactate oxidation is energetically unlikely. Based on the present data we conclude that direct mitochondrial lactate oxidation does not occur in skeletal muscle. The presence of an 'intracellular lactate shuttle' can therefore be questioned.
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| 8. |
- Eldh, Ann Catrine, et al.
(författare)
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The phenomena of participation and non-participation in health care : experiences of patients attending a nurse-led clinic for chronic heart failure
- 2004
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Ingår i: European Journal of Cardiovascular Nursing. - : Oxford University Press (OUP). - 1474-5151 .- 1873-1953. ; 3:3, s. 239-246
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Tidskriftsartikel (refereegranskat)abstract
- Background: Patient participation is stressed in the health care acts of many western countries yet a common definition of the concept is lacking. The understanding of experiences of patients with chronic heart failure (CHF) who attend nurse-led specialist clinics, a form of care suggested as beneficiary to this group, may promote a better understanding of participation. Aim: To investigate the meanings of participation and non-participation as experienced by patients living with CHF. Methods: Narrative interviews analysed in the phenomenological hermeneutic tradition inspired by Ricoeur where the interpretation is made in the hermeneutic circle, explaining and understanding the experienced phenomena. Findings: Participation was experienced as to “be confident”, “comprehend” and “seek and maintain a sense of control”. Non-participation was experienced as to “not understand”, “not be in control”, “lack a relationship” and “not be accountable”. The findings indicate that the experiences of participation and non-participation can change over time and phases of the disease and treatment. Conclusion: The study suggests an extended view on the concept of participation. Patients' experiences of participation in health care can vary and should therefore be an issue for dialogue between nurses and patients with CHF in nurse-led specialist clinics.
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| 9. |
- Blessborn, Daniel, et al.
(författare)
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Determination of pyronaridine in whole blood by automated solid-phase extraction and high-performance liquid chromatography
- 2003
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Ingår i: Therapeutic Drug Monitoring. - : Ovid Technologies (Wolters Kluwer Health). - 0163-4356 .- 1536-3694. ; 25:3, s. 264-270
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Tidskriftsartikel (refereegranskat)abstract
- A new extraction procedure for the analysis of pyronaridine in whole blood is presented. A weak cation exchanger with a carboxylic acid (CBA) sorbent was found to be a suitable solid phase sorbent for the extraction of pyronaridine. High-performance liquid chromatography with UV detection at 278 nm and an electrochemical detector at +0.75 V is used. The electrochemical detector gives higher selectivity than the UV detector. The separation was performed using a C18 reversed phase column with mobile phase of acetonitrile-phosphate buffer (0.01 mol/L, pH 2.5)- sodium perchlorate (1.0 mol/L; 22:77:1, v/v/v). The within-day RSDs were below 5% at all concentration levels between 75 nmol/L and 1500 nmol/L, and the between-day RSDs were below 14% at all concentration levels. The limit of quantification was about 50 nmol/L in 1000 microL whole blood with an RSD of 20% or less on a day-to-day basis. The stability of pyronaridine is increased if the pH is less than 3 in water solutions. In whole blood, the concentration decreases by about 10% for each freeze-thaw cycle performed. At room temperature (about 22 degrees C), pyronaridine concentration in whole blood decreases by about 10% within 12 to 24 hours.
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| 10. |
- Cotgreave, Ian A, et al.
(författare)
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Differentiation-specific alterations to glutathione synthesis in and hormonally stimulated release from human skeletal muscle cells.
- 2002
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Ingår i: The FASEB Journal. - : Wiley. - 0892-6638 .- 1530-6860. ; 16:3, s. 435-7
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Tidskriftsartikel (refereegranskat)abstract
- Muscle atrophy and cachexia are associated with many human diseases. These catabolic states are often associated with the loss of glutathione (GSH), which is thought to contribute to the induction of oxidative stress within the muscle. Glutathione synthesis and secretary characteristics were studied in human skeletal muscle myoblasts and myotube-like cells derived from the myoblasts by growth factor restriction. Differentiation was associated with a shift in the sulfur amino acid precursor specificity for synthesis of GSH from cystine to cysteine, as well as loss in ability to use extracellular glutathione and activation of methionine use. The thiol drug N-acetylcysteine was also shown to be an effective precursor irrespective of the state of differentiation. Additionally, myoblasts and myotube cultures were shown to secrete GSH continually, but only the differentiated cells responded to stress hormones such as glucagon, vasopressin, and phenylephrine, by increased secretion of the tripeptide. The data suggest that the skeletal muscle cells may provide an important hormonally regulated extra-hepatic source of systemic GSH and also shed light on the mechanisms of accelerated turnover of GSH operating during strenuous muscle activity and trauma. The data may also provide biochemical rationales for the nutritional and/or pharmacological manipulation of GSH with sulfur amino acid precursors during the treatment of muscle-specific oxidative stress and atrophy.
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