Метаболическая активность митохондрий корней гороха в условиях моделированной микрогравитации

Наведено дані досліджень впливу кліностатування на метаболічну активність мітохондрій, ізольованих із коренів 5-добових проростків гороху (Pisum sativum L). Встановлено збільшення швидкості окиснення в стані 3 малату+глутамату та екзогенного НАДН, а також значення коефіцієнта дихального контролю одночасно зі зниженням відношення АДФ/О порівняно з контролем. Висловлено припущення, що такі зміни характеру дихання є наслідком адаптації метаболічної системи мітохондрій до умов кліностатування.The effect of clinorotation on the respiration of mitochondria isolated from roots of pea 5-day-old seedlings has been examined. An increase in the rate of oxidation of malate and NADH in state 3 is detected. A respiratory control ratio is also increased simultaneously with a decrease in the efficiency of oxidative phosphorylation. Such character of mitochondrial respiration under simulated microgravity is supposed to be a consequence of the adaptation to these conditions

Sexuality in patients with asthma and COPD

SummarySexual quality of life was examined in 55 outpatients with chronic obstructive pulmonary disease (COPD) and asthma, using disease-specific questionnaires. Compared to an age- and sex-matched norm group, male patients with COPD reported a significantly lower sexual quality of life on all dimensions of the questionnaire. Female patients with COPD reported a lower frequency of sexual intimacy and lower sexual quality of life overall. Patients with asthma reported sexual quality-of-life scores that were somewhat better than COPD patients but worse than the healthy control group. Patients reported that they did not discuss sexual quality-of-life issues with their physician. Sexuality needs to be discussed by the health care provider in the consultation in order to improve quality of life of patients with chronic respiratory disorders

Illness cognitions in head and neck squamous cell carcinoma: predicting quality of life outcome

Goals of work: This paper presents an observational study of the longitudinal effects of cancer treatment on quality of life (QoL) in patients treated for head and neck squamous cell carcinoma (HNSCC), and evaluated the contribution of patients' baseline illness cognitions to the prediction of QoL 2 years after diagnosis. Patients and methods: One hundred seventy-seven patients eligible for primary treatment for HNSCC completed the Illness Perception Questionnaire-Revised at baseline and the European Organization for Research and Treatment of Cancer Core Quality of Life Questionnaire-30 at baseline, at 1-year and 2-year follow-ups. Main results Compared to baseline, patients reported better emotional functioning at both follow-ups (p<0.001), worse social functioning at 12 months (p<0.05), and better global health

The development and validation of the Leiden Bother and Needs Questionnaire for patients with pituitary disease: the LBNQ-Pituitary

Background Patients report persisting impairment in quality of life (QoL) after treatment for pituitary disease. At present, there is no questionnaire to assess (a) whether patients with pituitary disease are bothered by these consequences, and (b) their needs for support. Objective To develop and validate a disease-specific questionnaire for patients with pituitary disease which incorporates patient perceived bother related to the consequences of the disease, and their needs for support. Methods Items for the Leiden Bother and Needs Questionnaire for patients with pituitary disease (LBNQ-Pituitary) were formulated based on results of a recent focus group study (n = 49 items). 337 patients completed the LBNQ-Pituitary and six validated QoL questionnaires (EuroQoL-5D, SF-36, MFI-20, HADS, AcroQol, CushingQoL). Construct validity was examined by exploratory factor analysis. Reliabilities of the subscales were calculated with Cronbach’s alphas, and concurrent validity was assessed by calculating Spearman’s correlations between the LBNQ-Pituitary and the other measures. Results Factor analyses produced five subscales (i.e., mood problems, negative illness perceptions, issues in sexual functioning, physical and cognitive complaints, issues in social functioning) containing a total of 26 items. All factors were found to be reliable (Cronbach’s alphas all ≥.765), and the correlations between the dimensions of the LBNQ-Pituitary and other questionnaires (all P ≤ .0001) demonstrated convergent validity. Conclusions The LBNQ-Pituitary can be used to assess the degree to which patients are bothered by the consequences of the pituitary disease, as well as their needs for support. It could also facilitate an efficient assessment of patients’ needs for support in clinical practice. We postulate that paying attention to needs for support will lead to optimal patient care (e.g., improvement in psychosocial care), and positively affect QoL

Concerns About Exercise Are Related to Walk Test Results in Pulmonary Rehabilitation for Patients with COPD

# The Author(s). This article is published with open access at Springerlink.com 2010 Background Although international guidelines on pulmonary rehabilitation acknowledge that psychological factors contribute to exercise intolerance in patients with chronic obstructive pulmonary disease (COPD), the few empirical studies investigating this association have found inconsistent results. Purpose The purpose of this study is to investigate whether negative affect and beliefs about exercise of patients with COPD would be related to baseline 6-min walk (6-MW) test results in a pulmonary rehabilitation setting, after correction for physical variables (sex, age, height, weight, and lung function). A second aim was to examine whethe

When the ringing in the earsgetsunbearable : Illness representations, self-instructions and adjustment to tinnitus

ObjectiveChronic tinnitus can severely impair a person's quality of life. The degree of impairment, however, is not closely related to tinnitus loudness. Applying the common sense model (CSM) of self-regulation of health and illness, this study investigated to what extent psychological factors, i.e. illness representations and positive/negative self-instructions, are associated with the degree of tinnitus-related complaints.MethodsIn this cross-sectional study, 118 patients diagnosed with chronic tinnitus filled in questionnaires assessing illness representations (IPQ-R), positive and negative self-instructions (TRSS), and tinnitus-related complaints (TQ).ResultsThe regression analysis yielded a number of significant associations between illness representations and tinnitus-related complaints, particularly for the IPQ-R dimensions identity, consequences, coherence, and emotional representations. With regard to self-instructions and tinnitus-related complaints, significant effects were found only for negative self-instructions. Moreover, multiple mediation analyses revealed that the effects of consequences and emotional representations on tinnitus-related complaints were (partially) due to the use of negative self-instructions.ConclusionPsychological factors are strongly related to the extent of tinnitus-related complaints. The findings provide an indication of which aspects should be targeted in psychological and psychotherapeutic tinnitus treatment

Illness representations of depression and perceptions of the helpfulness of social support : comparing depressed and never-depressed persons

Background: Interactions between depressed persons and persons within their social network are often characterized by misunderstanding and unsuccessful social support attempts. These interpersonal problems could be fostered by discrepancies between depressed and never-depressed persons' illness representations of depression and/or discrepancies in the perceived helpfulness of supportive behaviors.Methods: Illness representations of depression (IPQ-R) and perceptions of the helpfulness of different social support behaviors (ISU-DYA and ISAD) were assessed in 41 currently depressed persons and 58 persons without a history of depression.Results: Never-depressed persons perceived depression as more controllable by treatment and as less emotionally impairing than depressed persons, but also as having more severe consequences. Never-depressed persons considered activation-oriented support (motivation to approach problems) as more helpful and protection-oriented support (allowance to draw back) as less helpful in comparison to depressed persons.Limitation: Data were collected in unrelated samples of depressed and never-depressed persons.Conclusions: Discrepancies in illness representations and perceptions of the helpfulness of social support do exist and may be the origin of problematic social interactions between depressed patients and persons within their social network. Therapeutic interventions should address the issue of conflicting perceptions and encourage depressed patients to acknowledge and discuss this topic within their social network

Illness perceptions about asthma are determinants of outcome

This article reviews an emerging area of research on patients with asthma: namely, illness perceptions and their relationships with various aspects of outcome. The article briefly introduces the Common Sense Model, outlining the relevance of how &quot;lay&quot; patients conceptualize symptoms, illness, and treatment. On the basis of a comprehensive literature search, nine empirical studies illustrating the relationships between illness perceptions and outcomes are discussed. It is concluded that further research should focus on assessing asthma-specific illness and treatment beliefs. Also, given the effects of intervention studies in illness perceptions in other patient categories, it is recommended that serious consideration be given to intervention studies focusing on eliciting and changing illness perceptions in asthma patients, especially in those whose self-management seems to be inadequate

Illness perceptions and quality of life in patients with chronic obstructive pulmonary disease

This study aimed at identifying cognitive and emotional representations relevant for improving health care communication and quality of life (QoL) in patients with chronic obstructive pulmonary disease (COPD). One-hundred-seventy-one COPD outpatients completed questionnaires on illness perceptions and QoL. After controlling for the effects of age, pulmonary function, and dyspnea, patients with decreased attention to symptoms, with more positive beliefs about the effects and outcomes of their illness, and with less strong emotional reactions to the illness, had higher QoL scores. The results of this study are discussed in relation to the associations found in other illnesse

The dynamics of illness perceptions: Testing assumptions of Leventhal's common-sense model in a pulmonary rehabilitation setting

Objectives. Although Leventhal's common-sense model (CSM) is proposed to represent a dynamic system, limited research has been conducted to investigate whether and how illness perceptions change. This study tested two hypotheses from the CSM about the dynamics of illness perceptions of patients with chronic obstructive pulmonary disease (COPD) in a pulmonary rehabilitation setting. Design and methods. The study employed a longitudinal design. Patients with COPD (N = 87) who took part in a pulmonary rehabilitation programme filled out the Illness Perception Questionnaire - Revised (IPQ-R) before and after treatment and rated the degree to which the rehabilitation had led to the achievement of desired outcomes. Clinical variables and quality of life (Chronic Respiratory Disease Questionnaire) data were obtained from medical records. Results. In line with expectations, results showed that, at baseline, longer time since diagnosis was associated to perceptions corresponding with a chronic illness model (longer illness duration, more experienced consequences, less perceived personal controllability), after correction for clinical variables. After completion of the rehabilitation programme, patients who were more convinced that their participation had led to the achievement of desired outcomes were less concerned about the negative consequences of COPD, had stronger perceptions about the variability in symptoms (cyclical timeline) and had stronger perceptions of personal controllability Conclusions. We conclude that, in accordance with Leventhal et al.'s CSM, coping with an illness is a continuous process and the achievement of desired outcomes during treatment is likely to enable patients to adopt a more positive representation of their illness.Pathogenesis and treatment of chronic pulmonary disease