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Cancer Fatigue Research Studies

Cancer Fatigue Research Studies

The following is a list of Cancer Fatigue research studies:

1.  Hofman, M., Ryan, J. L., Figueroa-Moseley, C. D., Jean-Pierre, P., & Morrow, G. R. (2007). Cancer-related fatigue: the scale of the problem. The oncologist, 12(Supplement 1), 4-10. Abstract conclusion: The impact of CRF on a patient's quality of life (QoL), particularly in relation to physical functioning and the ability to perform activities of daily living, is both profound and pervasive. In addition, CRF is associated with considerable psychological distress and can impose a significant financial burden by limiting a patient's ability to work. These effects can extend to caregivers and family members, who may also have to reduce their working capacity in order to provide additional care for a patient with CRF. This paper examines the prevalence of CRF and explores the impact of this distressing symptom on patients' functioning and QoL.

2.  Hann D et al. Measurement of fatigue in cancer patients: development and validation of the fatigue symptom inventory. Qual Life Res 7:301-310. Abstract conclusion: The complete FSI was found to have rather weak to moderate test-retest reliability among patients in active treatment and healthy comparison subjects assessed on three separate occasions. Convergent validity was demonstrated using comparisons with existing measures of fatigue. Construct validity was demonstrated using comparisons between and within groups as well as comparisons with measures of anxiety and depression. Overall, the FSI was established as a valid and reliable measure of fatigue in cancer patients and healthy individuals. Suggestions are made for the potential application of the measure in clinical research.

3.  Syrjala, K. L., Artherholt, S. B., Kurland, B. F., Langer, S. L., Roth-Roemer, S., Elrod, J. B., & Dikmen, S. (2011). Prospective neurocognitive function over 5 years after allogeneic hematopoietic cell transplantation for cancer survivors compared with matched controls at 5 years. Journal of clinical oncology, 29(17), 2397-2404. Abstract conclusion: Although neurocognitive function improved from 1 to 5 years after HCT, deficits remained for more than 40% of survivors. Risk factors, mechanisms and rehabilitation strategies need to be identified for these residual deficits.

4.  Flatters, S.J.L.; Bennett, G.J. Studies of peripheral sensory nerves in paclitaxel-induced painful peripheral neuropathy: Evidence for mitochondrial dysfunction. Pain 2006, 122, 247–257. Abstract conclusion: The most striking finding was significant increases in the prevalence of atypical (swollen and vacuolated) mitochondria in both C-fibres (1.6- to 2.3-fold) and myelinated axons (2.4- to 2.6-fold) of paclitaxel-treated nerves at days 7 and 27. Comparable to the pain behaviour, these mitochondrial changes had resolved by day 160. Our data do not support a causal role for axonal degeneration or dysfunction of axonal microtubules in paclitaxel-induced pain. Instead, our data suggest that a paclitaxel-induced abnormality in axonal mitochondria of sensory nerves contributes to paclitaxel-induced pain.

5.  Jin, H. W., Flatters, S. J., Xiao, W. H., Mulhern, H. L., & Bennett, G. J. (2008). Prevention of paclitaxel-evoked painful peripheral neuropathy by acetyl-L-carnitine: effects on axonal mitochondria, sensory nerve fiber terminal arbors, and cutaneous Langerhans cells. Experimental neurology, 210(1), 229-237. Abstract conclusion: Prophylactic treatment with acetyl-l-carnitine (ALCAR) prevents the neuropathic pain syndrome that is evoked by the chemotherapeutic agent, paclitaxel. The paclitaxel-evoked pain syndrome is associated with degeneration of the intraepidermal terminal arbors of primary afferent neurons, with the activation of cutaneous Langerhans cells, and with an increased incidence of swollen and vacuolated axonal mitochondria in A-fibers and C-fibers. Previous work suggests that ALCAR is neuroprotective in other nerve injury models and that it improves mitochondrial dysfunction. Thus, we examined whether the prophylactic efficacy of ALCAR was associated with the prevention of intraepidermal terminal arbor degeneration, the inhibition of Langerhans cell activation, or the inhibition of swelling and vacuolation of axonal mitochondria. In animals with a confirmed ALCAR effect, we found no evidence of a neuroprotective effect on the paclitaxel-evoked degeneration of sensory terminal arbors or an inhibition of the paclitaxel-evoked activation of Langerhans cells. However, ALCAR treatment completely prevented the paclitaxel-evoked increase in the incidence of swollen and vacuolated C-fiber mitochondria, while having no effect on the paclitaxel-evoked changes in A-fiber mitochondria. Our results suggest that the efficacy of prophylactic ALCAR treatment against the paclitaxel-evoked pain may be related to a protective effect on C-fiber mitochondria.

6.  Canta A, Pozzi E, Carozzi VA. Mitochondrial Dysfunction in Chemotherapy-Induced Peripheral Neuropathy (CIPN). Toxics 2015, 3,198-223. Abstract conclusion: The mitochondrial dysfunction has a critical role in several disorders including chemotherapy-induced peripheral neuropathies (CIPN). This is due to a related dysregulation of pathways involving calcium signalling, reactive oxygen species and apoptosis. Vincristine is able to affect calcium movement through the Dorsal Root Ganglia (DRG) neuronal mitochondrial membrane, altering its homeostasis and leading to abnormal neuronal excitability. Paclitaxel induces the opening of the mitochondrial permeability transition pore in axons followed by mitochondrial membrane potential loss, increased reactive oxygen species generation, ATP level reduction, calcium release and mitochondrial swelling. Cisplatin and oxaliplatin form adducts with mitochondrial DNA producing inhibition of replication, disruption of transcription and morphological abnormalities within mitochondria in DRG neurons, leading to a gradual energy failure. Bortezomib is able to modify mitochondrial calcium homeostasis and mitochondrial respiratory chain. Moreover, the expression of a certain number of genes, including those controlling mitochondrial functions, was altered in patients with bortezomib-induced peripheral neuropathy.

7.  Aluise, C. D., Sultana, R., Tangpong, J., Vore, M., Clair, D. S., Moscow, J. A., & Butterfield, D. A. (2010). Chemo brain (chemo fog) as a potential side effect of doxorubicin administration: role of cytokine-induced, oxidative/nitrosative stress in cognitive dysfunction. In Chemo Fog (pp. 147-156). Springer New York. Abstract conclusion: Doxorubicin (ADRIAMYCIN, RUBEX) is a chemotherapeutic agent that is commonly administered to breast cancer patients in standard chemotherapy regimens. As true of all such therapeutic cytotoxic agents, it can damage normal, noncancerous cells and might affect biochemical processes in a manner that might lead to, or contribute to, chemotherapy-induced cognitive deficits when administered either alone or in combination with other agents.

8.  Joshi, G., Sultana, R., Tangpong, J., Cole, M. P., St Clair, D. K., Vore, M., ... & Butterfield, D. A. (2005). Free radical mediated oxidative stress and toxic side effects in brain induced by the anti cancer drug adriamycin: insight into chemobrain. Free radical research, 39(11), 1147-1154. Abstract conclusion: The current results demonstrated a significant increase in levels of protein oxidation and lipid peroxidation and increased expression of MRP1 in brain isolated from mice, 72 h post i.p injection of ADR. These results are discussed with reference to potential use of this redox cycling chemotheraputic agent in the treatement of cancer and its chemobrain side effect in brain.

9.  Taillibert, S., Voillery, D., & Bernard-Marty, C. (2007). Chemobrain: is systemic chemotherapy neurotoxic?. Current opinion in oncology, 19(6), 623-627. Abstract conclusion: Through this review of the recent literature, we provide an actualized definition of chemobrain including recent functional imaging data and we debate its controversial aspects. Potential causes such as oxidative stress and their potential clinical application in the prevention and treatment of chemobrain are also discussed. Eventually, the methodological aspects of published studies are questioned and propositions are provided in order to improve the design of future trials.

10.  Nicolson, G. L., & Conklin, K. A. (2008). Reversing mitochondrial dysfunction, fatigue and the adverse effects of chemotherapy of metastatic disease by molecular replacement therapy. Clinical & experimental metastasis, 25(2), 161-169. Abstract conclusion: Recent clinical trials using cancer and non-cancer patients with chronic fatigue have shown the benefit of molecular replacement plus antioxidants in reducing the damage to mitochondrial membranes, restoring mitochondrial electron transport function, reducing fatigue and protecting cellular structures and enzymes from oxidative damage. Molecular replacement and antioxidant administration mitigates the damage to normal tissues, such as cardiac tissue, and reduces the adverse effects of cancer therapy without reduction in therapeutic results.

11.  Hanna, A., Sledge, G., Mayer, M. L., Hanna, N., Einhorn, L., Monahan, P., ... & Bhatia, S. (2006). A phase II study of methylphenidate for the treatment of fatigue. Supportive care in cancer, 14(3), 210-215. Abstract conclusion: Between May 2001 and May 2003, 37 patients were entered and treated. On weeks 4 and 6, 20 of 37 (54%) responded with a decreased BFI score greater than two points, averaging a decrease of 3.5. Although six patients (19%) withdrew due to adverse events, these were reported as grade 1. This study suggests that women with breast cancer who are suffering from moderate to severe fatigue may benefit from methylphenidate.

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