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1.
Contemp Clin Trials ; 137: 107411, 2024 02.
Article in English | MEDLINE | ID: mdl-38103784

ABSTRACT

BACKGROUND: Chronic pain affects up to half of individuals taking opioid agonist therapy (OAT; i.e., methadone and buprenorphine) for opioid use disorder (OUD), and yoga-based interventions may be useful for decreasing pain-related disability. Whereas more yoga practice (i.e., higher "dosage") may improve pain-related outcomes, it can be challenging for people with chronic pain taking OAT to attend class regularly and sustain a regular personal yoga practice. Therefore, we plan to optimize a yoga-based intervention (YBI) package in order to support class attendance and personal practice, thus maximizing the yoga dose received. STUDY DESIGN: Using the Multiphase Optimization Strategy (MOST) framework, we will conduct a factorial experiment to examine four intervention components that may be added to a weekly yoga class as part of a YBI. Components include: 1) personal practice videos featuring study yoga teachers, 2) two private sessions with a yoga teacher, 3) daily text messages to inspire personal practice, and 4) monetary incentives for class attendance. The primary outcome will be minutes per week engaged in yoga (including class attendance and personal practice). We plan to enroll 192 adults with chronic pain who are taking OAT for OUD in this 2x2x2x2 factorial experiment. CONCLUSION: Results of the study will guide development of an optimized yoga-based intervention package that maximizes dosage of yoga received. The final treatment package can be tested in a multisite efficacy trial of yoga to reduce pain interference in daily functioning in people with chronic pain who are taking OAT. TRIAL REGISTRATION: Pre-registration of the study was completed on ClinicalTrials.gov (identifier: NCT04641221).


Subject(s)
Buprenorphine , Chronic Pain , Opioid-Related Disorders , Yoga , Adult , Humans , Analgesics, Opioid/therapeutic use , Buprenorphine/therapeutic use , Chronic Pain/drug therapy , Opioid-Related Disorders/drug therapy , Pain Management
2.
Eur J Psychotraumatol ; 15(1): 2301205, 2023.
Article in English | MEDLINE | ID: mdl-38349003

ABSTRACT

Background: Military sexual trauma (MST) is reported by up to 74% of women veterans in the United States and is a driver of poor behavioural and physical health. Self-compassion is a transdiagnostic, protective factor linked with improved posttraumatic stress disorder (PTSD), depression, and health behaviours. Thus, Mindful Self-Compassion training (MSC) may help ameliorate MST-related impacts. However, MSC can also temporarily increase distress (i.e. backdraft). Delivering it with elective trauma-informed yoga (TIY), which regulates acute distress, may help address this issue.Objective: This VA quality improvement project examined feasibility, acceptability, and reported benefits and challenges of a manualized 8-week MSC including within non-randomized subgroups: MSC (n = 4) and MSC+ elective TIY classes (MSC+; n = 4).Methods: Nine women veterans with a history of MST at a Vet Center in the Northeastern U.S.A. enrolled; eight completed, excluding one MSC+ participant. Measures included attrition (n = 9), attendance (n = 8), weekly (n = 8) and posttreatment acceptability (n = 6), validated symptom severity assessments (n = 7), and an exit interview (n = 8).Results: Among completers, MSC attendance was excellent (89%) and higher among in MSC+ vs. MSC (94% vs. 84% sessions completed). On average across the two groups, depressive and PTSD symptom severity decreased by 21% and 30%, respectively. In exit interviews, participants across groups described improved coping with distress and psychiatric symptoms, reduced stress, and improved self-care and health behaviours. Although women in both groups reported backdraft during the programme, MSC+ also reported healthier coping and improved emotional processing.Conclusion: The results of this programme evaluation infer MSC may be feasible, acceptable, and beneficial for women survivors of MST in one Vet Center in the Northeastern USA. Further, temporary elevations in MSC-related distress may be ameliorated with adjunctive TIY. Given requests of women veterans in the USA. for additional complementary and integrative health treatment options, formal research on these approaches is warranted.


This programme evaluation with women veterans with a history of military sexual trauma (MST) explored the preliminary feasibility, acceptability, and reported benefits and challenges of a Mindful Self-Compassion (MSC) programme, with or without trauma-informed yoga.Women across groups reported improved psychiatric symptoms, self-care, and health behaviours, although those in MSC+ yoga reported healthier coping and improved emotional processing.Results suggest MSC training may be feasible, acceptable, and potentially beneficial for women veterans with MST in one clinical setting in the Northeastern USA, with potential synergistic effects of adjunctive yoga.


Subject(s)
Mindfulness , Veterans , Humans , Female , United States , Veterans/psychology , Self-Compassion , Feasibility Studies , Military Sexual Trauma , Mindfulness/methods
3.
Obes Sci Pract ; 8(6): 816-827, 2022 Dec.
Article in English | MEDLINE | ID: mdl-36483124

ABSTRACT

Background: Internalized weight stigma (Internalized-WS) is prevalent among individuals with severe obesity, particularly women, and is associated with shame, disordered eating, and weight gain. Effective, accessible interventions that address both severe (Class-III) obesity and Internalized-WS are needed. This randomized pilot trial evaluated the feasibility, acceptability, and preliminary efficacy of a fully-remote lifestyle modification intervention (LM) followed by mindful self-compassion training (MSC) or control. Methods: Twenty-eight women with Class-III obesity (46.6 ± 3.7 kg/m2) and elevated Internalized-WS were randomized to a virtually-delivered 4-month LM followed by a 2-month MSC or cooking/dietary education (CON). Psychosocial measures/weight were assessed at baseline, 4-(post-LM), 6-(post-MSC/CON), and 9-month (follow-up). Results: Improvements in Internalized-WS, shame, and self-compassion were observed with LM. Mean 4-month weight loss was 6.3 ± 3.7%. MSC had lower attendance and usefulness ratings versus CON. Post-MSC/CON, MSC yielded significant and/or meaningful improvements in Internalized-WS, self-compassion, and intuitive eating relative to CON. Weight loss did not differ by group at 6-month, and at 9-month trended lower in MSC versus CON. Conclusion: Virtual LM is feasible, acceptable, and leads to significant weight loss among women with severe obesity; MSC led to further improved Internalized-WS, self-compassion, and intuitive eating. Continued work is needed to elucidate effects of self-compassion training on Internalized-WS, its mechanisms, and linkages to cardiometabolic health and long-term weight loss.

4.
Article in English | MEDLINE | ID: mdl-37649877

ABSTRACT

Background: Engaging in regular physical activity (PA) is particularly important among individuals with depression, who are at heightened risk for a host of negative health outcomes. However, people with depression are 50% less likely to meet national guidelines for PA and face unique barriers to PA adherence, including lower distress tolerance and motivation for exercise. Acceptance and Commitment Therapy (ACT) may offer promise for increasing PA among adults with depressive symptoms due to its effects on distress tolerance and motivation. Therefore, we developed ACTivity, an ACT-based intervention designed to promote PA among low-active adults with elevated depressive symptoms. Prior to testing the efficacy of ACTivity in an RCT, an important first step is to conduct a preliminary trial to establish feasibility of study procedures for the ACTivity and comparison intervention programs, as well as to establish the credibility/acceptability of the intervention. The purpose of this paper is to describe the ACTivity intervention and the design of this feasibility trial. Method/Design: We will conduct a feasibility RCT with two parallel groups and a 1:1 allocation ratio comparing ACTivity to a comparison intervention (relaxation training + PA promotion) among 60 low-active adults with elevated depressive symptoms. All study procedures will be conducted remotely. Discussion: Results of this feasibility study will inform a subsequent RCT designed to test the efficacy of ACTivity. If shown to be efficacious, ACTivity will provide a treatment that can be widely disseminated to increase PA among adults with depressive symptoms and thereby decrease their risk for chronic disease.

5.
Health Psychol Behav Med ; 9(1): 933-950, 2021.
Article in English | MEDLINE | ID: mdl-34868736

ABSTRACT

PURPOSE: Internalized weight stigma (IWS) is common in the United States of America across body weight categories, and is implicated in the development of distress and unhealthy eating behaviors (e.g. overeating, disordered eating) that can foster poor cardiometabolic health. While emerging intervention research shows early promise in reducing IWS, long-term efficacy is unclear and novel strategies remain needed. This analysis examined whether participation in a mindful yoga intervention was associated with reduced IWS and increased intuitive eating, an adaptive eating behavior, and whether these changes correlated with each other or with changes in mindfulness and self-compassion. METHODS: Participants were stressed adults with low fruit and vegetable intake (N = 78, 64.1% White, M. Body Mass Index 25.59 ± 4.45) enrolled in a parent clinical trial of a 12-week mindful yoga intervention. Validated self-report measures of IWS, intuitive eating, mindfulness, and self-compassion were administered at pre-treatment, mid-treatment (8 weeks), post-treatment (12 weeks), and 4-month follow-up (24 weeks). RESULTS: Linear mixed modeling revealed significant improvements in IWS and intuitive eating across the four timepoints (p < .001). Reduced IWS correlated with increased intuitive eating pre- to post-treatment (p = .01). Improved self-compassion and mindfulness correlated with intuitive eating (both p = . 04), but not IWS (p = .74 and p = .56, respectively). CONCLUSION: This study offers preliminary support for the hypothesis that mindful yoga may promote intuitive eating and reduce IWS among stressed adults with poor diet, and suggests that changes in these factors may co-occur over time. Further investigation with controlled designs is necessary to better understand the temporality and causality of these relationships.Trial registration: ClinicalTrials.gov identifier: NCT02098018.

6.
Nutrients ; 13(8)2021 Aug 20.
Article in English | MEDLINE | ID: mdl-34445015

ABSTRACT

Oxidative stress is involved in the metabolic dysregulation of type 2 diabetes (DM2). Acrocomia aculeata (Aa) fruit pulp has been described for the treatment of several diseases, and recently we have proved that its leaves have phenolic compounds with a marked antioxidant effect. We aimed to assess whether they can improve metabolic, redox and vascular functions in DM2. Control Wistar (W-Ctrl) and non-obese type 2 diabetic Goto-Kakizaki (GK-Ctrl) rats were treated for 30 days with 200 mg.kg-1 aqueous extract of Aa (EA-Aa) (Wistar, W-EA-Aa/GK, GK-EA-Aa). EA-Aa was able to reduce fasting glycaemia and triglycerides of GK-EA-Aa by improving proteins related to glucose and lipid metabolism, such as GLUT-4, PPARγ, AMPK, and IR, when compared to GK-Ctrl. It also improved viability of 3T3-L1 pre-adipocytes exposed by H2O2. EA-Aa also increased the levels of catalase in the aorta and kidney, reduced oxidative stress and increased relaxation of the aorta in GK-treated rats in relation to GK-Ctrl, in addition to the protective effect against oxidative stress in HMVec-D cells. We proved the direct antioxidant potential of the chemical compounds of EA-Aa, the increase in antioxidant defences in a tissue-specific manner and hypoglycaemic properties, improving vascular function in type 2 diabetes. EA-Aa and its constituents may have a therapeutic potential for the treatment of DM2 complications.


Subject(s)
Antioxidants/pharmacology , Aorta/drug effects , Arecaceae , Blood Glucose/drug effects , Diabetes Mellitus, Type 2/drug therapy , Diabetic Angiopathies/drug therapy , Hypoglycemic Agents/pharmacology , Oxidative Stress/drug effects , Plant Extracts/pharmacology , Vasodilation/drug effects , 3T3-L1 Cells , Adipocytes/drug effects , Adipocytes/metabolism , Animals , Antioxidants/isolation & purification , Aorta/metabolism , Aorta/physiopathology , Arecaceae/chemistry , Biomarkers/blood , Blood Glucose/metabolism , Diabetes Mellitus, Type 2/blood , Diabetes Mellitus, Type 2/complications , Diabetic Angiopathies/etiology , Diabetic Angiopathies/metabolism , Diabetic Angiopathies/physiopathology , Disease Models, Animal , Endothelial Cells/drug effects , Endothelial Cells/metabolism , Fruit , Humans , Hypoglycemic Agents/isolation & purification , Lipids/blood , Male , Mice , Plant Extracts/isolation & purification , Rats, Wistar
7.
Complement Ther Med ; 59: 102729, 2021 Jun.
Article in English | MEDLINE | ID: mdl-33965560

ABSTRACT

OBJECTIVES: Up to 70% of women service members in the United States report military sexual trauma (MST); many develop post-traumatic stress disorder (PTSD) and co-occurring disorders. Trauma-informed yoga (TIY) is suggested to improve psychiatric symptoms and shown feasible and acceptable in emerging research, yet no work has evaluated TIY in MST survivors. The current quality improvement project aimed to examine TIY's feasibility, acceptability, and perceived effects in the context of MST. DESIGN: Collective case series (N = 7). SETTING: New England Vet Center. INTERVENTIONS: Extant TIY program (Mindful Yoga Therapy) adapted for Veteran women with MST in concurrent psychotherapy. MAIN OUTCOME MEASURES: Attrition and attendance; qualitative exit interview; validated self-report measure of negative affect pre/post each yoga class, and symptom severity assessments and surveys before (T1; Time 1) and after the yoga program (T2; Time 2). RESULTS: Feasibility was demonstrated and women reported TIY was acceptable. In qualitative interviews, women reported improved symptom severity, diet, exercise, alcohol use, sleep, and pain; reduced medication use; and themes related to stress reduction, mindfulness, and self-compassion. Regarding quantitative change, results suggest acute reductions in negative affect following yoga sessions across participants, as well as improved affect dysregulation, shame, and mindfulness T1 to T2. CONCLUSIONS: TIY is both feasible and acceptable to Veteran women MST survivors in one specific Vet Center, with perceived behavioral health benefits. Results suggest TIY may target psychosocial mechanisms implicated in health behavior change (stress reduction, mindfulness, affect regulation, shame). Formal research should be conducted to confirm these QI project results.


Subject(s)
Military Personnel , Mindfulness , Veterans , Yoga , Female , Humans , Sexual Trauma , United States
8.
J Psychiatr Pract ; 25(6): 491-498, 2019 Nov.
Article in English | MEDLINE | ID: mdl-31821229

ABSTRACT

BACKGROUND: Emerging adulthood is a common and problematic time for alcohol and cannabis use. Emerging adulthood also represents a vulnerable time period for anxiety and depression. Substance use and mental health issues are highly comorbid, yet substance use is commonly neglected in psychiatric care. OBJECTIVE: The goal of this study was to categorize the cannabis and alcohol use patterns of emerging adults in psychiatric care and to evaluate relationships with use-related problems, psychiatric symptomatology, and motives for use. METHODS: Participants were emerging adults who were consecutive admissions to a young adult psychiatric partial hospital program from 2017 to 2018. Of 318 participants who completed questionnaires, 244 (76.7%) reported cannabis and/or alcohol use in the previous month. Cluster analyses and analysis of variance tests were conducted to categorize and differentiate between participants who reported use. RESULTS: Results from cluster analyses identified 4 categories of use: low cannabis/high alcohol (35.7%), low cannabis/low alcohol (17.6%), high cannabis/low alcohol (29.1%), and high cannabis/high alcohol (17.6%). Individuals in categories with the highest rates of use and co-use reported more alcohol problems (F=24.31, P<0.001), cannabis problems (F=36.75, P<0.001), depression (F=3.60, P=0.01), and motives: social (F=6.12, P<0.001), coping with anxiety (F=20.43, P<0.001), coping with depression (F=17.80, P<0.001), enhancement (F=7.85, P<0.001), and conformity (F=4.92, P<0.01). CONCLUSIONS/IMPORTANCE: Clear categories of substance use emerged. Participants who were heavier users were more likely to use to alleviate psychiatric symptomatology, yet they also reported greater psychiatric symptomatology and use-related problems. Among a psychiatric sample of emerging adults, cannabis and alcohol use was common and problematic. Thus, substance use should be evaluated for and, if present, targeted with interventions during psychiatric care.


Subject(s)
Alcoholism/epidemiology , Anxiety Disorders/epidemiology , Day Care, Medical/methods , Depressive Disorder/epidemiology , Marijuana Abuse/epidemiology , Adult , Alcoholism/psychology , Anxiety Disorders/psychology , Comorbidity , Depressive Disorder/psychology , Female , Humans , Male , Marijuana Abuse/psychology , Motivation , New England/epidemiology , Surveys and Questionnaires , Young Adult
9.
J Subst Abuse Treat ; 105: 19-27, 2019 10.
Article in English | MEDLINE | ID: mdl-31443887

ABSTRACT

The purpose of this project was to assess the feasibility and acceptability of a hatha yoga program designed to target chronic pain in people receiving opioid agonist therapy for opioid use disorder. We conducted a pilot randomized trial in which people with chronic pain who were receiving either methadone maintenance therapy (n = 20) or buprenorphine (n = 20) were randomly assigned to weekly hatha yoga or health education (HE) classes for 3 months. We demonstrated feasibility in many domains, including recruitment of participants (58% female, mean age 43), retention for follow-up assessments, and ability of teachers to provide interventions with high fidelity to the manuals. Fifty percent of participants in yoga (95% CI: 0.28-0.72) and 65% of participants in HE (95% CI: 0.44-0.87) attended at least 6 of 12 possible classes (p = 0.62). Sixty-one percent in the yoga group reported practicing yoga at home, with a mean number of times practicing per week of 2.67 (SD = 2.37). Participant mood improved pre-class to post-class, with greater decreases in anxiety and pain for those in the yoga group (p < 0.05). In conclusion, yoga can be delivered on-site at opioid agonist treatment programs with home practice taken up by the majority of participants. Future research may explore ways of increasing the yoga "dosage" received. This may involve testing strategies for increasing either class attendance or the amount of home practice or both.


Subject(s)
Analgesics, Opioid/therapeutic use , Chronic Pain/therapy , Opioid-Related Disorders/rehabilitation , Yoga/psychology , Adult , Buprenorphine/therapeutic use , Feasibility Studies , Female , Health Education , Humans , Male , Methadone/therapeutic use , Opiate Substitution Treatment , Opioid-Related Disorders/drug therapy , Pilot Projects
10.
Curr Opin Psychol ; 30: 103-108, 2019 12.
Article in English | MEDLINE | ID: mdl-31079012

ABSTRACT

Substance Use Disorders (SUD) continue to be a significant public health concern. Exercise has been examined as an adjunctive approach to addiction treatment in an effort to improve mental health, physical health, and substance use outcomes. This review will present the existing evidence for the efficacy of exercise in the context of SUD treatment. In addition, we identify key factors, specific to this population, that may be contributing to treatment outcomes of exercise intervention studies. Lastly, we present a number of considerations for the development of more effective exercise interventions, in the future, with patients in SUD treatment.


Subject(s)
Exercise Therapy , Substance-Related Disorders , Humans , Marijuana Abuse/therapy , Methamphetamine , Opioid-Related Disorders/therapy , Public Health , Substance-Related Disorders/epidemiology , Substance-Related Disorders/therapy , United States/epidemiology
11.
J Affect Disord ; 238: 111-117, 2018 10 01.
Article in English | MEDLINE | ID: mdl-29870820

ABSTRACT

BACKGROUND: Hatha yoga may be helpful for alleviating depression symptoms. The purpose of this analysis is to determine whether treatment program preference, credibility, or expectancy predict engagement in depression interventions (yoga or a control class) or depression symptom severity over time. METHODS: This is a secondary analysis of a randomized controlled trial (RCT) of hatha yoga vs. a health education control group for treatment of depression. Depressed participants (n = 122) attended up to 20 classes over a period of 10 weeks, and then completed additional assessments after 3 and 6 months. We assessed treatment preference prior to randomization, and treatment credibility and expectancy after participants attended their first class. Treatment "concordance" indicated that treatment preference matched assigned treatment. RESULTS: Treatment credibility, expectancy, and concordance were not associated with treatment engagement. Treatment expectancy moderated the association between treatment group and depression. Depression severity over time differed by expectancy level for the yoga group but not for the health education group. Controlling for baseline depression, participants in the yoga group with an average or high expectancy for improvement showed lower depression symptoms across the acute intervention and follow-up period than those with a low expectancy for improvement. There was a trend for a similar pattern for credibility. Concordance was not associated with treatment outcome. LIMITATIONS: This is a secondary, post-hoc analysis and should be considered hypothesis-generating. CONCLUSIONS: Results suggest that expectancy improves the likelihood of success only for a intervention thought to actively target depression (yoga) and not a control intervention.


Subject(s)
Depression/therapy , Patient Education as Topic/methods , Patient Participation/psychology , Patient Preference/psychology , Yoga/psychology , Adult , Female , Humans , Male , Middle Aged , Treatment Outcome
12.
Complement Ther Med ; 34: 149-155, 2017 Oct.
Article in English | MEDLINE | ID: mdl-28917367

ABSTRACT

OBJECTIVES: To understand depressed individuals' experiences in a 10-week hatha yoga program. DESIGN: In a randomized controlled trial, participants were assigned to either 10 weeks of hatha yoga classes or a health education control group. This report includes responses from participants in yoga classes. At the start of classes, average depression symptom severity level was moderate. MAIN OUTCOME MEASURES: After 10 weeks of yoga classes, we asked participants (n=50) to provide written responses to open-ended questions about what they liked about classes, what they did not like or did not find helpful, and what they learned. We analyzed qualitative data using thematic analysis. RESULTS AND CONCLUSIONS: Elements of yoga classes that may increase acceptability for depressed individuals include having instructors who promote a non-competitive and non-judgmental atmosphere, who are knowledgeable and able to provide individualized attention, and who are kind and warm. Including depression-related themes in classes, teaching mindfulness, teaching breathing exercises, and providing guidance for translating class into home practice may help to make yoga effective for targeting depression. Participants' comments reinforced the importance of aspects of mindfulness, such as attention to the present moment and acceptance of one's self and one's experience, as potential mechanisms of action. Other potential mechanisms include use of breathing practices in everyday life and the biological mechanisms that underlie the positive impact of yogic breathing. The most serious concern highlighted by a few participants was the concern that the yoga classes were too difficult given their physical abilities.


Subject(s)
Attitude to Health , Depression/therapy , Depressive Disorder/therapy , Meditation/psychology , Yoga/psychology , Adult , Aged , Attention , Breathing Exercises/psychology , Exercise/psychology , Female , Humans , Male , Middle Aged , Mindfulness , Perception , Qualitative Research , Respiration
13.
Nutr Cancer ; 68(2): 250-66, 2016.
Article in English | MEDLINE | ID: mdl-26943884

ABSTRACT

Hepatocellular carcinoma (HCC) is the most common primary liver tumor (PLT), with cholangiocarcinoma (CC) being the second most frequent. Glucose transporter 1 (GLUT-1) expression is increased in PLTs and therefore it is suggested as a therapeutic target. Flavonoids, like quercetin, are GLUT-1 competitive inhibitors and may be considered as potential therapeutic agents for PLTs. The objective of this study was evaluation of quercetin anticancer activity in three human HCC cell lines (HepG2, HuH7, and Hep3B2.1-7) and in a human CC cell line (TFK-1). The possible synergistic effect between quercetin and sorafenib, a nonspecific multikinase inhibitor used in clinical practice in patients with advanced HCC, was also evaluated. It was found that in all the cell lines, quercetin induced inhibition of the metabolic activity and cell death by apoptosis, followed by increase in BAX/BCL-2 ratio. Treatment with quercetin caused DNA damage in HepG2, Hep3B2.1-7, and TFK-1 cell lines. The effect of quercetin appears to be independent of P53. Incubation with quercetin induced an increase in GLUT-1 membrane expression and a consequent reduction in the cytoplasmic fraction, observed as a decrease in (18)F-FDG uptake, indicating a GLUT-1 competitive inhibition. The occurrence of synergy when sorafenib and quercetin were added simultaneously to HCC cell lines was noticed. Thus, the use of quercetin seems to be a promising approach for PLTs through GLUT-1 competitive inhibition.


Subject(s)
Antineoplastic Agents, Phytogenic/pharmacology , Carcinoma, Hepatocellular/drug therapy , Liver Neoplasms/drug therapy , Quercetin/pharmacology , Antineoplastic Agents, Phytogenic/administration & dosage , Antineoplastic Combined Chemotherapy Protocols/pharmacology , Carcinoma, Hepatocellular/metabolism , Carcinoma, Hepatocellular/pathology , Cell Cycle/drug effects , Cell Line, Tumor , Cell Survival/drug effects , DNA Damage/drug effects , Fluorodeoxyglucose F18/pharmacokinetics , Glucose Transporter Type 1/metabolism , Hep G2 Cells/drug effects , Humans , Liver Neoplasms/metabolism , Liver Neoplasms/pathology , Niacinamide/administration & dosage , Niacinamide/analogs & derivatives , Niacinamide/pharmacology , Phenylurea Compounds/administration & dosage , Phenylurea Compounds/pharmacology , Proto-Oncogene Proteins c-bcl-2/metabolism , Quercetin/administration & dosage , Sorafenib , Tumor Suppressor Protein p53/metabolism , bcl-2-Associated X Protein/metabolism
14.
Cancer Metastasis Rev ; 34(4): 563-73, 2015 Dec.
Article in English | MEDLINE | ID: mdl-25579236

ABSTRACT

Retinoblastoma is a tumor that mainly affects children under 5 years, all over the world. The origin of these tumors is related with mutations in the RB1 gene, which may result from genetic alterations in cells of the germ line or in retinal somatic cells. In developing countries, the number of retinoblastoma-related deaths is higher due to less access to treatment, unlike what happens in developed countries where survival rates are higher. However, treatments such as chemotherapy and radiotherapy, although quite effective in treating this type of cancer, do not avoid high indices of mortality due to secondary malignances which are quite frequent in these patients. Additionally, treatments such as cryotherapy, thermotherapy, thermochemotherapy, or brachytherapy represent other options for retinoblastoma. When all these approaches fail, enucleation is the last option. Photodynamic therapy might be considered as an alternative, particularly because of its non-mutagenic character. Photodynamic therapy is a treatment modality based on the administration of photosensitizing molecules that only upon irradiation of the tumor with a light source of appropriate wavelength are activated, triggering its antitumor action. This activity may be not only due to direct damage to tumor cells but also due to damage caused to the blood vessels responsible for the vascular supply of the tumor. Over the past decades, several in vitro and in vivo studies were conducted to assess the effectiveness of photodynamic therapy in the treatment of retinoblastoma, and very promising results were achieved.


Subject(s)
Photochemotherapy/methods , Photosensitizing Agents/therapeutic use , Retinoblastoma/therapy , Child, Preschool , Humans , Photochemotherapy/adverse effects , Photosensitizing Agents/adverse effects , Retinoblastoma Protein/genetics
15.
Mol Diagn Ther ; 18(5): 495-504, 2014 Oct.
Article in English | MEDLINE | ID: mdl-24852041

ABSTRACT

Hepatocellular carcinoma (HCC) is one of the most lethal cancers worldwide. Surgical resection and liver transplantation are still the best options for treatment. Nevertheless, as the number of patients who may benefit from these therapies is limited, alternative therapies have been developed, including chemotherapy. However, partly due to the expression of multidrug resistance (MDR) proteins, it has been found that HCC is a highly chemoresistant tumor. The major family of MDR proteins is the ATP-binding cassette (ABC) transporter superfamily, which includes P-glycoprotein (Pgp) and MDR-associated protein 1 (MRP1). Positron emission tomography using the radiolabeled analog of glucose, 2-deoxy-2-((18)F)fluoro-D-glucose ([(18)F]FDG), has been used in diagnostic imaging of various types of tumors. Clinical studies are inconsistent but experimental studies have shown that [(18)F]FDG uptake is associated with tumor grade and is inversely proportional to Pgp expression in HCC. These studies unveil that [(18)F]FDG can be a substrate of Pgp, although that relationship remains unclear. This review sums up the relationship between MDR expression in HCC, and [(18)F]FDG uptake by tumor cells, showing that this radiopharmaceutical may provide a useful tool for the study of chemoresistance in HCC, and that the use of this marker may contribute to the therapeutic choice on this highly aggressive tumor.


Subject(s)
Carcinoma, Hepatocellular/diagnostic imaging , Fluorodeoxyglucose F18/pharmacokinetics , Liver Neoplasms/diagnostic imaging , Multidrug Resistance-Associated Proteins/metabolism , Positron-Emission Tomography/methods , Carcinoma, Hepatocellular/drug therapy , Carcinoma, Hepatocellular/metabolism , Carcinoma, Hepatocellular/pathology , Drug Resistance, Multiple , Drug Resistance, Neoplasm , Humans , Liver Neoplasms/drug therapy , Liver Neoplasms/metabolism , Liver Neoplasms/pathology , Radiography , Radiopharmaceuticals/pharmacokinetics
16.
J Geriatr Psychiatry Neurol ; 25(3): 138-45, 2012 Sep.
Article in English | MEDLINE | ID: mdl-22914597

ABSTRACT

Neuropsychiatric symptoms of Parkinson disease (PD) such as fatigue, depression, and apathy are common and detract from quality of life. There is little published on the impact of physical activity on the neuropsychiatric symptoms of PD. A convenience sample of 45 patients with PD (mean age = 66.1 years; 33% female) completed questionnaires on physical activity, neuropsychiatric symptoms, and specific exercise preferences. Covarying for age and gender, higher levels of physical activity were associated with significantly less fatigue, as well as a trend for less apathy and depression and greater positive affect. Exercise preferences included moderate intensity (73%), at home (56%), in the morning (73%), scheduled (69%), options for varied activities (73%), and preference for both structured/supervised (50%), and unsupervised/self-paced (50%) programs. Preferred activities included the use of aerobic exercise equipment, resistance training, and yoga. Developing and tailoring exercise programs that incorporate specific preferences may result in more effective interventions for patients with PD.


Subject(s)
Exercise/psychology , Geriatric Assessment/methods , Motor Activity , Neuropsychological Tests/statistics & numerical data , Parkinson Disease/psychology , Aged , Apathy , Depressive Disorder/complications , Depressive Disorder/prevention & control , Depressive Disorder/psychology , Fatigue/complications , Fatigue/prevention & control , Fatigue/psychology , Female , Geriatric Assessment/statistics & numerical data , Humans , Male , Parkinson Disease/complications , Quality of Life , Resistance Training , Surveys and Questionnaires , Yoga/psychology
17.
Nutr Cancer ; 63(4): 479-94, 2011.
Article in English | MEDLINE | ID: mdl-21541902

ABSTRACT

Vitamins are essential nutrients for human metabolism, playing an important role as coenzymes or enzymes in many vital processes for the normal functioning of the body. In recent years, it has become apparent that vitamins are crucial in health and human disease, due to several studies that studied this relationship. Currently, it is known that vitamins can have an important role in the prevention and treatment of cancer, but until now no conclusive results were obtained. In this review, we will present the work and more relevant conclusions obtained in recent years of investigation about the relationship between vitamins and cancer, namely vitamin A, vitamin B complex, vitamin C, vitamin D, vitamin E, and vitamin K.


Subject(s)
Chemoprevention , Dietary Supplements , Neoplasms/prevention & control , Vitamins/pharmacology , Ascorbic Acid/pharmacology , Humans , Randomized Controlled Trials as Topic , Vitamin A/pharmacology , Vitamin B Complex/pharmacology , Vitamin D/pharmacology , Vitamin E/pharmacology , Vitamin K/pharmacology
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