Holistic multimodal care for patients with cancer cachexia and their family caregivers

Patients with cancer cachexia frequently suffer from physical symptoms and psychological symptoms of illness, which can lead to emotional distress in patients and family caregivers. Although there is no standard care to manage cancer cachexia despite its high prevalence and negative impact on quality of life in patients and family caregivers, there is accumulating evidence showing the importance of holistic multimodal care for cancer cachexia. However, there is no agreement on the essential components of holistic multimodal care. Therefore, the aims of this review are to give an overview of what is known about the holistic multimodal care and to suggest the composition of a multidisciplinary team to achieve holistic interventions. Holistic multimodal care for cancer cachexia is defined as an approach that addresses physical health through medical, pharmacological, nutritional, and rehabilitative interventions as well as psychological, emotional, and social well-being issues according to the needs of patients and family caregivers. Moreover, an ideal multidisciplinary team is proposed to achieve holistic interventions based on patient- and family-centered care. However, the development of educational programs on cancer cachexia for both clinicians and patients and family caregivers is needed. Furthermore, measurements to assess the benefits of holistic multimodal care also need to be established

Комплексный подход к борьбе с асфальтосмолопарафиновыми отложениями на Ванкорском нефтегазовом месторождении (Красноярский край)

Определены наиболее эффективные растворители для удаления промысловых АСПО при низких температурах. Проанализированы условия влияния растворителей на процессы кристаллизации и плавления промысловых парафинов в АСПО. Предложен комплекс мероприятий, направленных на борьбу с асфальтосмолопарафиновыми отложениями на Ванкорском месторождении.The most effective solvents for the removal of industrial ARPD at low temperatures have been determined. The conditions for the influence of solvents on the crystallization and melting of commercial paraffins in ARPD are analyzed. A set of measures is proposed to combat asphalt-resin-paraffin deposits in the Vankor field

Clinical and biological characterization of skeletal muscle tissue biopsies of surgical cancer patients

BACKGROUND: Researchers increasingly use intraoperative muscle biopsy to investigate mechanisms of skeletal muscle atrophy in patients with cancer. Muscles have been assessed for morphological, cellular, and biochemical features. The aim of this study was to conduct a state‐of‐the‐science review of this literature and, secondly, to evaluate clinical and biological variation in biopsies of rectus abdominis (RA) muscle from a cohort of patients with malignancies. METHODS: Literature was searched for reports on muscle biopsies from patients with a cancer diagnosis. Quality of reports and risk of bias were assessed. Data abstracted included patient characteristics and diagnoses, sample size, tissue collection and biobanking procedures, and results. A cohort of cancer patients (n = 190, 88% gastrointestinal malignancies), who underwent open abdominal surgery as part of their clinical care, consented to RA biopsy from the site of incision. Computed tomography (CT) scans were used to quantify total abdominal muscle and RA cross‐sectional areas and radiodensity. Biopsies were assessed for muscle fibre area (μm(2)), fibre types, myosin heavy chain isoforms, and expression of genes selected for their involvement in catabolic pathways of muscle. RESULTS: Muscle biopsy occurred in 59 studies (total N = 1585 participants). RA was biopsied intraoperatively in 40 studies (67%), followed by quadriceps (26%; percutaneous biopsy) and other muscles (7%). Cancer site and stage, % of male participants, and age were highly variable between studies. Details regarding patient medical history and biopsy procedures were frequently absent. Lack of description of the population(s) sampled and low sample size contributed to low quality and risk of bias. Weight‐losing cases were compared with weight stable cancer or healthy controls without considering a measure of muscle mass in 21 out of 44 studies. In the cohort of patients providing biopsy for this study, 78% of patients had preoperative CT scans and a high proportion (64%) met published criteria for sarcopenia. Fibre type distribution in RA was type I (46% ± 13), hybrid type I/IIA (1% ± 1), type IIA (36% ± 10), hybrid type IIA/D (15% ± 14), and type IID (2% ± 5). Sexual dimorphism was prominent in RA CT cross‐sectional area, mean fibre cross‐sectional area, and in expression of genes associated with muscle growth, apoptosis, and inflammation (P < 0.05). Medical history revealed multiple co‐morbid conditions and medications. CONCLUSIONS: Continued collaboration between researchers and cancer surgeons enables a more complete understanding of mechanisms of cancer‐associated muscle atrophy. Standardization of biobanking practices, tissue manipulation, patient characterization, and classification will enhance the consistency, reliability, and comparability of future studies

Determination of Inactive Powers in a Single-Phase AC Network

Based on the development of the theory of reactive power and distortion power, starting with the works of Fryze and Budeanu, it has been found that the contradictions in the definition of the components of inactive powers are caused by errors in the introduced intermediate concepts and corresponding calculations when switching to nonlinear and non-sinusoidal AC circuits. The materials of the works of modern researchers and the numerical calculations carried out made it possible to trace the differences between reactive power and distortion power, to confirm the orthogonality properties of the active, reactive power, and distortion power components. The paper defines the conditions for achieving a power balance in an AC network with nonlinear loads, compiled and tested criteria leading to the absence of distortion power in a single-phase AC network. Using the time base of the projection of the generalized vectors in vector diagrams, it is shown that compliance with the criteria for the absence of distortion power does not determine the mutual similarity of the voltage curve with the current curve for a nonlinear load. It has been found that the well-known term “distortion power” has an unfortunate wording, since this power, although it characterizes the interaction of harmonics of currents and voltages with different ordinal numbers, is not determined by the visual similarity or the degree of distortion of the load current waveforms relative to the supply voltage curve

Development and validation of questionnaires for eating‐related distress among advanced cancer patients and families

Background: Eating‐related distress (ERD) is one type of psychosocial distress among advanced cancer patients and family caregivers. Its alleviation is a key issue in palliative care; however, there is no validated tool for measuring ERD. Methods: The purpose of this study was to validate tools for evaluating ERD among patients and family caregivers. The study consisted of a development and validation/retest phase. In the development phase, we made preliminary questionnaires for patients and family caregivers. After face validity and content validity, we performed an exploratory factor analysis and discussed the final adoption of items. In the validation/retest phase, we examined factor validity with an exploratory factor analysis. We calculated Pearson's correlation coefficients between the questionnaire for patients, the Functional Assessment of Anorexia/Cachexia Therapy Anorexia Cachexia Subscale (FAACT ACS) and the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire‐Cachexia 24 (EORTC QLQ‐CAX24) and Pearson's correlation coefficients between the questionnaire for family caregivers and the Caregiver Quality of Life Index‐Cancer (CQOLC) for concurrent validity. We calculated Cronbach's alpha coefficients (Cronbach's alpha) and intraclass correlation coefficients (ICCs) for internal consistency and test–retest reliability. We performed the Mann–Whitney U test between the questionnaires and cancer cachexia based on criteria from the international consensus for known‐group validity. Results: In the development phase, 162 pairs of patients and family caregivers were asked to participate, and 144 patients and 106 family caregivers responded. In the validation/retest phase, 333 pairs of patients and family caregivers were asked to participate, and 234 patients and 152 family caregivers responded. Overall, 183 patients and 112 family caregivers did the retest. Seven conceptual groups were extracted for the ERD among patients and family caregivers, respectively. Patient factors 1–7 correlated with FAACT ACS (r = −0.63, −0.43, −0.55, −0.40, −0.38, −0.54, −0.38, respectively) and EORTC QLQ‐CAX24 (r = 0.58, 0.40, 0.60, 0.49, 0.38, 0.59, 0.42, respectively). Family factors 1–7 correlated with CQOLC (r = −0.34, −0.30, −0.37, −0.37, −0.46, −0.42, −0.40, respectively). The values of Cronbach's alpha and ICC of each factor and all factors of patients ranged from 0.84 to 0.96 and 0.67 to 0.83, respectively. Those of each factor and all factors of family caregivers ranged from 0.84 to 0.96 and 0.63 to 0.84, respectively. The cachexia group of patients had significantly higher scores than the non‐cachexia group for each factor and all factors. Conclusions: Newly developed tools for measuring ERD experienced by advanced cancer patients and family caregivers have been validated

Nutrition and athletic performance

Proceedings of the 1st International Meeting of the congress on nutrition and athletic performance, Edmonton, Alberta, Canada, August 8-11, 2001 - Communication lors du congrès 'Nutrition et performance sportive', Edmonton, 8-11 aout 1551

Muscle squelettique et toxicité aux traitements néoplasiques

Une caractéristique commune des patients atteints de cancer est la perte de masse maigre, en particulier du muscle squelettique, perte qui peut être secondaire à la tumeur ou à la chimiothérapie. La perte de masse maigre a des conséquences défavorables importantes à la fois sur la toxicité du traitement antinéoplasique mais aussi, de fait, sur le pronostic du cancer. En effet, la perte de masse maigre, chez les patients traités par chimiothérapie, est associée à la progression tumorale, et est un facteur prédictif indépendant de toxicité sévère. Les patients se comportent comme si la dose de chimiothérapie était inadaptée, “ surdosée ”, avec des effets secondaires majeurs nécessitant une réduction de dose ou un arrêt de traitement. La perte de masse maigre peut être aggravée ou atténuée par certaines drogues de chimiothérapie. Elle n’est pas proportionnelle à l’évolution du poids corporel et est un facteur pronostique de toxicité aux traitements oncologiques et de moindre survie. Cet article résume les causes potentielles de perte de masse maigre dans la trajectoire du patient atteint de cancer et ses conséquences sur la thérapie