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JMIR Public Health and Surveillance Jan 2024Physical exercise is one of the main nonpharmacological treatments for most pathologies. In addition, physical exercise is beneficial in the prevention of various... (Meta-Analysis)
Meta-Analysis
BACKGROUND
Physical exercise is one of the main nonpharmacological treatments for most pathologies. In addition, physical exercise is beneficial in the prevention of various diseases. The impact of physical exercise has been widely studied; however, existing meta-analyses have included diverse and heterogeneous samples. Therefore, to our knowledge, this is the first meta-analysis to evaluate the impact of different physical exercise modalities on telomere length in healthy populations.
OBJECTIVE
In this review, we aimed to determine the effect of physical exercise on telomere length in a healthy population through a meta-analysis of randomized controlled trials.
METHODS
A systematic review with meta-analysis and meta-regression of the published literature on the impact of physical exercise on telomere length in a healthy population was performed. PubMed, Cochrane Library, SCOPUS, Web of Science, and Embase databases were searched for eligible studies. Methodological quality was evaluated using the Risk Of Bias In Nonrandomized Studies of Interventions and the risk-of-bias tool for randomized trials. Finally, the certainty of our findings (closeness of the estimated effect to the true effect) was evaluated using Grading of Recommendations, Assessment, Development, and Evaluations (GRADE).
RESULTS
We included 9 trials that met the inclusion criteria with fair methodological quality. Random-effects model analysis was used to quantify the difference in telomere length between the exercise and sham groups. Meta-analysis showed that exercise did not significantly increase telomere length compared with the control intervention (mean difference=0.0058, 95% CI -0.05 to 0.06; P=.83). Subgroup analysis suggested that high-intensity interventional exercise significantly increased telomere length compared with the control intervention in healthy individuals (mean difference=0.15, 95% CI 0.03-0.26; P=.01). Furthermore, 56% of the studies had a high risk of bias. Certainty was graded from low to very low for most of the outcomes.
CONCLUSIONS
The findings of this systematic review and meta-analysis suggest that high-intensity interval training seems to have a positive effect on telomere length compared with other types of exercise such as resistance training or aerobic exercise in a healthy population.
TRIAL REGISTRATION
PROSPERO CRD42022364518; http://tinyurl.com/4fwb85ff.
Topics: Adult; Humans; Databases, Factual; Exercise; Health Status; Telomere; Telomere Homeostasis
PubMed: 38194261
DOI: 10.2196/46019 -
The International Journal of... Feb 2024Cannabis use is a risk factor of psychiatric illness, such as bipolar disorder type-I (BDI). Indeed, cannabis use strongly influences the onset and clinical course of...
BACKGROUND
Cannabis use is a risk factor of psychiatric illness, such as bipolar disorder type-I (BDI). Indeed, cannabis use strongly influences the onset and clinical course of BDI, although the biological mechanisms underlying this interaction remain unknown. Therefore, we have reviewed the biological mechanisms affected by cannabis use that may trigger BD.
METHODS
A systematic review was carried out of articles in which gene expression was studied in cannabis users or human-derived cells exposed to tetrahydrocannabinol (THC) or cannabidiol (CBD). A second systematic review was then performed to identify articles in which gene expression was studied in BDI samples, highlighting those that described alterations to the same molecular and cellular mechanisms affected by cannabis/THC/CBD.
RESULTS
The initial search identified 82 studies on cannabis and 962 on BDI. After removing duplicates and applying the inclusion/exclusion criteria, 9 studies into cannabis and 228 on BDI were retained. The molecular and cellular mechanisms altered by cannabis use or THC/CBD exposure were then identified, including neural development and function, cytoskeletal function, cell adhesion, mitochondrial biology, inflammatory related pathways, lipid metabolism, the endocannabinoid system, the hypocretin/orexin system, and apoptosis. Alterations to those activities were also described in 19 of 228 focused on BDI.
CONCLUSIONS
The biological mechanisms described in this study may be good candidates to the search for diagnostic biomarkers and therapeutic targets for BDI. Because cannabis use can trigger the onset of BD, further studies would be of interest to determine whether they are involved in the early development of the disorder, prompting early treatment.
Topics: Humans; Cannabis; Bipolar Disorder; Cannabinoid Receptor Agonists; Cannabidiol; Hallucinogens; Risk Factors; Dronabinol
PubMed: 38175142
DOI: 10.1093/ijnp/pyae002 -
Journal of Affective Disorders Feb 2024The use of technology in psychological treatments can bring evidence-based interventions closer to more people using fewer resources. The aim of this systematic review... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
The use of technology in psychological treatments can bring evidence-based interventions closer to more people using fewer resources. The aim of this systematic review and preliminary meta-analysis was to summarize all the available information about technology-supported psychological treatments for Adjustment Disorder (AjD) patients of all ages.
METHOD
Eligibility criteria included studies that tested a technology-supported treatment in patients with AjD and reported data on a mental health outcome. Case studies and case series were excluded. Searches were conducted in the PubMed, Web of Science, Scopus, and PsycINFO databases. Study quality was assessed using the Cochrane RoB 2.0. tool for Randomized Controlled Trials (RCTs) and the NHLBI tool for pre-post studies.
RESULTS
Nine articles (8 RCTs and 1 pre-post study) were included, eight that tested computerised interventions and two that used virtual reality. The meta-analysis showed the superior efficacy of the intervention groups compared to control conditions in reducing mental health symptomatology and a significant improvement between pre- and post-treatment.
LIMITATIONS
The small number of studies included and the high heterogeneity among them were two of the main limitations.
CONCLUSIONS
These results are similar to those observed in previous systematic reviews on technology-supported treatments for other mental disorders and suggest that these interventions could be effective for patients with AjD. However, further research is needed to determine the advantages and disadvantages of these interventions for the treatment of AjD in different age populations such as children, adolescents or older adults, as well as effective means for improving treatment retention.
Topics: Adolescent; Aged; Child; Humans; Adjustment Disorders; Mental Health; Technology
PubMed: 37992766
DOI: 10.1016/j.jad.2023.11.059 -
Heliyon Oct 2023This article, the second in a two-part series, continues the discussion on the nature of the relationship between the level of sweet taste suppression and eating...
This article, the second in a two-part series, continues the discussion on the nature of the relationship between the level of sweet taste suppression and eating behaviour, but in animal rather human subjects. In particular, the aim was to review the scientific literature on the impact that bioactive compounds that decrease oral sweet sensations have on intake, preference and physiological status in preclinical studies. This review was registered in the and conducted according to the (PRISMA) and the and covered original papers included in Web of Science, PubMed, Scopus, Food Science Source and Food Science and technology abstracts. We identified 28 peer-reviewed English-language studies that fit the topic and met the inclusion criteria. We identified three plant species, , , and , that possess acute sweetness-inhibitory properties. When administered orally, these plants reduced neural responses to sweet stimuli and decreased consumption. However, studies on the longer-term effects of antisweet activity remain to be conducted. Translating the valuable insights into the mechanisms underlying the relationship between sweet taste impairment and eating behaviour into practical clinical applications are discussed.
PubMed: 37860570
DOI: 10.1016/j.heliyon.2023.e20511 -
Heliyon Oct 2023The taste of food plays a crucial role in determining what and how much we eat. Thus, interventions that temporarily block sweet taste receptors offer a promising...
The taste of food plays a crucial role in determining what and how much we eat. Thus, interventions that temporarily block sweet taste receptors offer a promising approach to addressing unhealthy behaviours associated with sugary foods. However, the relationship between reduced sweet taste response and food consumption remains unclear, with contradictory findings. Certain studies suggest that a diminished perception of sweetness leads to a sense of fullness and results in reduced food intake, while others suggest the opposite effect. To shed some light, our systematic review looked into the relationship between diminished sweet taste response and food consumption by examining the effects of bioactive compounds that experimentally inhibit sweetness in healthy individuals. This review was registered in the International Prospective Register of Systematic Reviews and conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) and the Scottish Intercollegiate Guidelines Network, and covered original papers included in Web of Science, PubMed, Scopus, Food Science Source and Food Science and technology abstracts. We identified 33 peer-reviewed English-language studies that fit the topic and met the inclusion criteria. The current literature predominantly focuses on the immediate impact of oral gymnemic acids, failing to provide preliminary evidence in support of the specific threshold hypothesis, above which food consumption decreases and below which the opposite effect occurs. Additionally, there was inconsistency in the findings regarding the short-term desire to eat following sweetness inhibition. Considering the downstream effects on energy intake and their clinical applications, further research is needed to clarify both the acute within-session effects (i.e., not wanting any more now) and the longer-term effects (i.e., deciding not to start eating) linked to oral sweet-taste-suppressing compounds.
PubMed: 37817998
DOI: 10.1016/j.heliyon.2023.e19733 -
Psychoneuroendocrinology Dec 2023The underlying psychobiology that contributes to Anorexia Nervosa (AN) onset and disease progression remains unclear. New research is emerging suggesting a possible link...
INTRODUCTION
The underlying psychobiology that contributes to Anorexia Nervosa (AN) onset and disease progression remains unclear. New research is emerging suggesting a possible link between inflammation and a variety of mental illnesses. Alterations of cytokines may play a role in the pathogenesis of AN. Some studies have found differences in the cytokine profile of those with AN compared to healthy controls, but results are heterogeneous. The aim of this work was to systematically review existing studies investigating in-vivo cytokine production in those with AN before and after weight restoration compared to controls.
METHODS
A comprehensive literature search of four electronic databases (PubMed, PsychInfo, EMBASE and CINAH) was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines to identify human in-vivo studies investigating the relationship between AN and cytokine production. Data extracted from included studies related to population characteristics (e.g. age, gender, mean mBMI/%IBW), cytokine measurement and relevant findings. Confounding factors (e.g. smoking status, co-morbid mental illness, menstruation status) were also collected.
RESULTS
36 studies were eligible for this systematic review of which the majority were conducted in Europe (77.8%) and involved female subjects (97.2%). Those with AN ranged in age from 13 to 47 years and had an illness duration of 3 months to 24 years. 15 candidate cytokines and 3 receptors were identified (TNF-alpha, IL-6, IL-1B, CRP, IL-2, IL-7, IL-10, IFN-γ, TNF-R2, IL-1 α, IL-15, TNF-R1, IL-17, IL-18, TGF-B1, IL-12, IL-6R and TGF-B2) exploring in-vivo levels in patients with AN and comparing to controls. TNF-alpha and IL-6 were the most extensively studied with IL-6 being significantly elevated in 4 out of 8 (50%) of longitudinal studies when comparing AN patients at baseline compared to post weight restoration. Following weight restoration, there was no difference in IL-6 levels when comparing to HC in 7 of 8 (87.5%) longitudinal studies examined.
CONCLUSIONS
The most promising cytokine potentially involved in the pathogenesis of AN appears to be IL-6, and possibly TNF-alpha pathways. The heterogeneity of clinical and methodology factors impedes the generalizability of results. Future studies may wish to address these methodological shortcomings as alterations in cytokine levels in AN could act as therapeutic targets assisting with weight restoration and psychopathology and may offer diagnostic potential.
Topics: Humans; Female; Adolescent; Young Adult; Adult; Middle Aged; Anorexia Nervosa; Tumor Necrosis Factor-alpha; Interleukin-6; Cytokines; Longitudinal Studies
PubMed: 37769539
DOI: 10.1016/j.psyneuen.2023.106390 -
Nurse Education in Practice Oct 2023The aim of this study was to analyze burnout levels and prevalence in nursing students and to estimate prevalence levels with meta-analyses. (Review)
Review
AIM
The aim of this study was to analyze burnout levels and prevalence in nursing students and to estimate prevalence levels with meta-analyses.
BACKGROUND
Nurses are one of the healthcare professionals most affect by burnout, but nursing students, during their studies, can also suffer burnout.
DESIGN
a systematic review with meta-analysis was performed.
METHODS
The search equation used in Pubmed, CINAHL and Scopus databases was "burnout AND nursing students". Quantitative primary studies including information about burnout, emotional exhaustion, depersonalization, or personal accomplishment in nursing students were included. Four meta-analysis were performed.
RESULTS
the sample was of n = 34 studies, with n = 15 studies being included in the meta-analysis with n = 2744 nursing students. Burnout prevalence was 19% (95% CI 11-28%). Regarding burnout dimensions, the most affected was high emotional exhaustion with a prevalence of 41%(95% CI 23-61%; n = 2222) followed by 27% low personal accomplishment(95% CI 9-49%; n = 2096), 25% high depersonalization (95% CI 15-36%; n = 2096).
CONCLUSIONS
Prevalence of burnout and its dimensions vary from 19% to 41%, being emotional exhaustion the main problem in nursing students. This problem may affect their future as nursing professionals, and it would be of important to prevent and to treat burnout at university levels.
PubMed: 37651959
DOI: 10.1016/j.nepr.2023.103753 -
Biomedicines Aug 2023This systematic review and meta-analysis examines how pulmonary rehabilitation impacts in patients suffering from subacute and long COVID-19 infections, gauging... (Review)
Review
BACKGROUND
This systematic review and meta-analysis examines how pulmonary rehabilitation impacts in patients suffering from subacute and long COVID-19 infections, gauging enhancements in of dyspnea, physical function, quality of life, psychological state (anxiety and depression), and fatigue.
METHODS
Three electronic databases (PubMed, Web of Science, Cochrane Library) were systematically searched for full-text articles published from inception to January 2023. Randomized, quasi-experimental, and observational studies were included, with adults diagnosed with subacute or long COVID-19 who received pulmonary rehabilitation as intervention. Outcomes related to dyspnea, physical function, quality of life, fatigue, and psychological status were included. Risk of bias was assessed with Cochrane Risk of Bias Tool for Randomized Controlled Trials and Risk of bias in non-randomized studies of intervention. The review was registered before starting in PROSPERO (CRD: 42022373075).
RESULTS
Thirty-four studies were included, involving 1970 patients with subacute and long COVID-19. The meta-analysis demonstrated moderate to large effects on dyspnea, physical function, quality of life, and depressive symptoms compared to usual care intervention. No significant differences were found in fatigue compared to usual care, nor in anxiety levels after pulmonary rehabilitation intervention.
CONCLUSIONS
Pulmonary rehabilitation has the potential to improve health outcomes in patients with subacute and long COVID-19. However, due to the high risk of bias of included studies, conclusions should be taken with caution.
PubMed: 37626710
DOI: 10.3390/biomedicines11082213 -
Applied Psychology. Health and... May 2024Breast cancer is associated with adverse physical and psychological consequences. Although research has identified the various benefits linked to psychosocial... (Meta-Analysis)
Meta-Analysis Review
Breast cancer is associated with adverse physical and psychological consequences. Although research has identified the various benefits linked to psychosocial interventions, mixed results have been found in relation to peer support. The aim of the present systematic review and meta-ethnography is to explore the qualitative evidence on the experience of breast cancer survivors in peer support. A systematic search of the literature was conducted until June 2023, and a meta-ethnographic approach was used to synthesize the included papers. Eleven articles were included, collecting the experience of 345 participants. The following four core areas involved in peer support implementation were identified from the synthesis: Peer support can create understanding and a mutual therapeutic and emotional connection; peer support can facilitate an educational and supportive patient-centered journey; peer support should monitor group members for unpleasant emotional experiences; peer support should have professional supervision of recruitment and training to prioritize quality. These results can be used as patient-centered insights by healthcare professionals to provide evidence-informed peer support programs and address current limitations in the field.
Topics: Humans; Peer Group; Cancer Survivors; Breast Neoplasms; Social Support; Female; Anthropology, Cultural; Qualitative Research
PubMed: 37493002
DOI: 10.1111/aphw.12473 -
European Neuropsychopharmacology : the... Oct 2023Major depression disorder (MDD) and bipolar disorder (BD) are usual comorbidities in patients with substance use disorders (SUD), a condition known as dual disorder... (Review)
Review
UNLABELLED
Major depression disorder (MDD) and bipolar disorder (BD) are usual comorbidities in patients with substance use disorders (SUD), a condition known as dual disorder (DD). MDD, BD and SUD are associated with cognitive impairment, potentially leading to a greater functional impairment in the context of DD.
OBJECTIVES
To review the existing data on the cognitive impairment in DD patients with comorbid MDD or BD, considering the influence of the depressive symptomatology.
METHODS
Following the PRISMA protocol 19 studies were selected from the last 17 years, 13 of which focused on BD, five on MDD and one included both diagnoses.
RESULTS
Studies based in BD+SUD showed that the most affected cognitive domains were attention and executive functions, but not all of them found a greater impairment due to the comorbidity. While fewer studies were found for depression, MDD+SUD works point to a similar impairment cognitive pattern. Furthermore, depression improvement could be associated to better cognitive performance.
LIMITATIONS
More standardized research is needed regarding the influence of depression on cognitive performance of DD patients, especially on those with comorbid MDD. Factors such as main substance, abstinence, or MDD/BD-related variables should be considered. Unstudied factors, like gender or circadian rhythms, are proposed to improve knowledge in this area.
CONCLUSIONS
Current studies suggest that DD could potentiate cognitive impairment in BD, MDD and SUD. However, additional research is needed to improve the understanding of comorbidity to apply more individualized therapies in the treatment of these patients, considering the interference of their neurocognitive functioning.
PubMed: 37453267
DOI: 10.1016/j.euroneuro.2023.06.006