scholarly journals Cellular calcium in bipolar disorder: systematic review and meta-analysis

Author(s):  
Paul J. Harrison ◽  
Nicola Hall ◽  
Arne Mould ◽  
Noura Al-Juffali ◽  
Elizabeth M. Tunbridge

AbstractCalcium signalling has long been implicated in bipolar disorder, especially by reports of altered intracellular calcium ion concentrations ([Ca2+]). However, the evidence has not been appraised critically. We carried out a systematic review and meta-analysis of studies of cellular calcium indices in bipolar disorder. 2281 records were identified and 117 screened, of which 32 were eligible and 21 were suitable for meta-analyses. The latter each involved up to 642 patients and 404 control subjects. We found that basal free intracellular [Ca2+] is increased in bipolar disorder, both in platelets and in lymphocytes. The effect size is 0.55, with an estimated elevation of 29%. It is observed in medication-free patients. It is present in mania and bipolar depression, but data are equivocal for euthymia. Cells from bipolar disorder individuals also show an enhanced [Ca2+] response to stimulation with 5-HT or thrombin, by an estimated 25%, with an effect size of 0.63. In studies which included other diagnoses, intracellular basal [Ca2+] was higher in bipolar disorder than in unipolar depression, but not significantly different from schizophrenia. Functional parameters of cellular Ca2+ (e.g. calcium transients), and neuronal [Ca2+], have been much less investigated, and no firm conclusions can be drawn. In summary, there is a robust, medium effect size elevation of basal and stimulated free intracellular [Ca2+] in bipolar disorder. The results suggest altered calcium functioning in the disorder, and encourage further investigations into the underlying mechanisms, and the implications for pathophysiology and therapeutics.

2019 ◽  
Vol 48 (10) ◽  
pp. 2572-2585 ◽  
Author(s):  
Kai Huang ◽  
Grey Giddins ◽  
Li-dong Wu

Background: Platelet-rich plasma (PRP), as a promising alternative to traditional corticosteroid (CS), is now increasingly used in the treatment of elbow epicondylitis (EE) and plantar fasciitis (PF). To date, however, the synthesis of information on the clinical efficacy of PRP versus CS is limited with divergent conclusions. Purpose: To compare the clinical efficacy of PRP and CS injections in reducing pain and improving function in EE and PF. Study Design: Systematic review and meta-analysis. Methods: Online databases were searched from inception to October 2018 for prospective studies evaluating PRP versus CS injections for EE or PF. Independent reviewers undertook searches, screening, and risk-of-bias appraisals. The primary outcomes of interest were pain and function in both the short term (1-3 months) and the long term (≥6 months). Results: Twenty trials with 1268 participants were included. For EE, PRP provides a statistically and clinically meaningful long-term improvement in pain, with a very large effect size of −1.3 (95% CI, −1.9 to −0.7) when compared with CS, but the evidence level was low. For EE, there was moderate evidence that CS provides a statistically meaningful improvement in pain in the short term, with a medium effect size of 0.56 (95% CI, 0.08-1.03) as compared with PRP; this improvement might not be clinically significant. For PF, there was low evidence that PRP provides a statistically and clinically meaningful long-term improvement in function (American Orthopedic Foot & Ankle Society score), with a very large effect size of 1.94 (95% CI, 0.61-3.28). There were no significant differences between the groups in improvement in function in EE and pain and short-term function in PF, but the quality of the evidence was low. Conclusion: The use of PRP yields statistically and clinically better improvement in long-term pain than does CS in the treatment of EE. The use of PRP yields statistically and clinically better long-term functional improvement than that of CS in the treatment of PF.


2020 ◽  
Vol 50 (13) ◽  
pp. 2141-2153
Author(s):  
Almudena Ramírez-Martín ◽  
Javier Ramos-Martín ◽  
Fermin Mayoral-Cleries ◽  
Berta Moreno-Küstner ◽  
Jose Guzman-Parra

AbstractDespite the robust body of work on cognitive aspects of bipolar disorder (BD), a clear profile of associated impairments in impulsivity, decision-making and risk-taking from studies that use behavioural measures has yet to be established. A systematic review, across four electronic databases (PsycINFO, MEDLINE/PubMed, ScienceDirect and Scopus), of literature published between January 1999 and December 2018 was carried out in accordance with the PRISMA statement. The protocol was registered on PROSPERO (CRD42018114684). A fixed-effect and random-effects meta-analysis using the Hedges' g (ES) estimate was performed. The analysis revealed significant impairment in BD individuals with medium effect sizes in various aspects of impulsivity – response inhibition (ES = 0.49; p < 0.0001), delay of gratification (ES = 0.54; p < 0.0001) and inattention (ES = 0.49; p < 0.0001) – and in decision-making (ES = 0.61, p = 0.0002), but no significant impairment in risk-taking behaviour (ES = 0.41; p = 0.0598). Furthermore, we found significant heterogeneity between studies for decision-making and risk-taking behaviour but not for impulsivity. Impaired risk-taking behaviour was significant in a subgroup of BD-I and euthymic individuals (ES = 0.92; p < 0.0001) with no significant heterogeneity. A stratification analysis revealed comparable results in euthymic and non-euthymic individuals for impulsivity. Our findings suggest that behaviour impulsivity is elevated in all phases of BD, representing a core and clinically relevant feature that persists beyond mood symptoms. More studies about decision-making and risk-taking are necessary to establish if they are impaired in BD and to analyze the role of mood state.


Cephalalgia ◽  
2015 ◽  
Vol 36 (3) ◽  
pp. 265-278 ◽  
Author(s):  
Julian Koenig ◽  
DeWayne P Williams ◽  
Andrew H Kemp ◽  
Julian F Thayer

Objective Vagal nerve activity—indexed by heart rate variability (HRV)—has been linked to altered pain processing and inflammation, both of which may underpin headache disorders and lead to cardiovascular disease (CVD). Here we examined the evidence for differences in parasympathetic (vagal) activity indexed by time- and frequency-domain measures of HRV in patients with headache disorders compared to healthy controls (HCs). Methods A systematic review and meta-analysis was conducted on studies investigating group differences in vagally mediated HRV (vmHRV) including time- (root-mean-square of successive R-R-interval differences (RMSSD)) and frequency- (high-frequency HRV) domain measures. Studies eligible for inclusion were identified by a systematic search of the literature, based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. Results Seven studies reporting a total of 10 comparisons of patients with headache disorders (HF-HRV n = 67, RMSSD n = 122) and HCs (HF-HRV n = 64, RMSSD n = 125) were eligible for inclusion. Random-effects meta-analysis revealed a significant main effect on RMSSD ( Z = 2.03, p = 0.04; Hedges’ g = −0.63; 95% CI (−1.24, –0.02); k = 6) and similar pooled effect size estimates for HF-HRV when breathing was controlled ( g = −0.30; 95% CI (−0.69; 0.10)) but not when breathing was not controlled ( g = 0.02; 95% CI (−0.69; 0.74)). Controlling for breathing had no effect on RMSSD. Conclusion vmHRV is reduced in patients with headache disorders, findings associated with a medium effect size. Suggestions for future research in this area are provided, emphasizing a need to investigate the impact of headache disorders and commonly comorbid conditions—including mental disorders—as well as the investigation of the risk for CVD in migraine in particular. We further emphasize the need for large-scale studies to investigate HRV as a mechanism mediating the association of migraine and CVD.


Author(s):  
Mi-Kyoung Cho ◽  
Mi Young Kim

As the diabetic population increases, self-management of diabetes, a chronic disease, is important. Given that self-management nursing interventions using various techniques have been developed, an analysis of their importance is crucial. This study aimed to identify the overall effects of self-management nursing interventions on primary (HbA1c) and secondary (self-care, self-efficacy, fasting blood sugar level blood pressure, lipid, body mass index, waist circumference, distress, anxiety, depression, and quality of life) outcomes in diabetes. Systematic review and meta-analysis were used. The meta-analysis involved the synthesis of effect size; tests of homogeneity and heterogeneity; trim and fill plot; Egger’s regression test; and Begg’s test for assessing publication bias. The overall effect on HbA1c was −0.55, suggesting a moderate effect size, with HbA1c decreasing significantly after nursing interventions. Among the nursing interventions, the overall effect on HbA1c of nurse management programs, home visiting, and customized programs was −0.25, −0.61, and −0.65, respectively, a small or medium effect size, and was statistically significant. Healthcare professionals may encourage people with diabetes to engage in self-management of their glucose levels, such as patient-centered customized intervention. Interventions that reflect the individual’s characteristics and circumstances are effective in enabling self-management.


Toxins ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 510 ◽  
Author(s):  
Antonella Giannantoni ◽  
Marilena Gubbiotti ◽  
Vittorio Bini

Botulinum neurotoxin A (BoNT/A) appears to be one of the best intravesical treatments for interstitial cystitis/bladder painful syndrome (IC/BPS). We aimed to point out what the evidence is regarding the effects of BoNT/A intravesically injected in patients with IC/BPS. We performed a systematic review of all randomized controlled trials (RCTs) assessing BoNT/A for IC/BPS by using Medline, EMBASE, CINAHL, CENTRAL and MetaRegister of Controlled Trials. Standardized mean differences (SMD) were extracted from the available trials and combined in a meta-analysis applying a random effect model, including heterogeneity of effects. Twelve trials were identified. Significant benefits from BoNT/A injections were detected in: Interstitial Cystitis Symptom Index and Problem Index (ICSI, ICPI) (small to medium effect size: SMD = –0.302; p = 0.007 and –0.430, p = 0.004, respectively); Visual Analog Scale (VAS) for pain and day-time urinary frequency (medium effect size: SMD = –0.576, p < 0.0001 and –0.546, p = 0.013, respectively). A great effect size was detected for post-void residual volume (PVR, SMD = 0.728; p =0.002) although no clinically relevant in most cases. Great heterogeneity was observed in treatments’ methodologies and symptoms assessment. Overall, BoNT/A intravesical injections significantly improve some of the most relevant symptoms affecting IC/BPS patients.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Hyune June Lee ◽  
Sung Min Kim ◽  
Ji Yean Kwon

Abstract Background Peripartum depression is a common disorder with very high potential hazards for both the patients and their babies. The typical treatment options include antidepressants and electroconvulsive therapy. However, these treatments do not ensure the safety of the fetus. Recently, repetitive transcranial magnetic stimulation has emerged as a promising treatment for neuropathies as well as depression. Nevertheless, many studies excluded pregnant women. This systematic review was conducted to confirm whether repetitive transcranial magnetic stimulation was a suitable treatment option for peripartum depression. Methods We performed a systematic review that followed the PRISMA guidelines. We searched for studies in the MEDLINE, PsycINFO, EMBASE, and Cochrane library databases published until the end of September 2020. Eleven studies were selected for the systematic review, and five studies were selected for quantitative synthesis. Data analysis was conducted using Comprehensive Meta-Analysis 3 software. The effect size was analyzed using the standardized mean difference, and the 95% confidence interval (CI) was determined by the generic inverse variance estimation method. Results The therapeutic effect size of repetitive transcranial magnetic stimulation for peripartum depression was 1.394 (95% CI: 0.944–1.843), and the sensitivity analysis effect size was 1.074 (95% CI: 0.689–1.459), indicating a significant effect. The side effect size of repetitive transcranial magnetic stimulation for peripartum depression was 0.346 (95% CI: 0.214–0.506), a meaningful result. There were no severe side effects to the mothers or fetuses. Conclusions From various perspectives, repetitive transcranial magnetic stimulation can be considered an alternative treatment to treat peripartum depression to avoid exposure of fetuses to drugs and the severe side effects of electroconvulsive therapy. Further research is required to increase confidence in the results.


2021 ◽  
pp. 026921632199472
Author(s):  
Natalia Salamanca-Balen ◽  
Thomas V Merluzzi ◽  
Man Chen

Background: The concept of hope is an important theme in chronic illness and palliative care and has been associated with increased psycho-spiritual well-being and quality of life. Psycho-spiritual interventions have been described in this population, but no systematic review of hope-enhancing interventions or hopelessness-reducing interventions has been conducted for persons with palliative care diseases. Aim: To describe and assess the effectiveness of interventions in palliative care that measure hope and/or hopelessness as an outcome. Design: This systematic review and meta-analysis was pre-registered (Prospero ID: CRD42019119956). Data sources: Electronic databases, journals, and references were searched. We used the Cochrane criteria to assess the risk of bias within studies. Results: Thirty-five studies (24 randomized controlled trials, 5 quasi-experimental, 6 pre-post studies) involving a total of 3296 palliative care patients were included. Compared with usual/standard cancer care alone, interventions significantly increased hope levels at a medium effect size ( g = 0.61, 95% confidence interval (CI) = 0.28–0.93) but did not significantly reduce hopelessness ( g = −0.08, 95% CI = −0.18 to 0.02). It was found that interventions significantly increase spirituality ( g = 0.70, 95% CI = 0.02–1.37) and decrease depression ( g = −0.29, 95% CI = −0.51 to −0.07), but had no significant effect over anxiety, quality of life, and symptom burden. Overall, quality of evidence across the included studies was rated as low. Conclusions: Evidence suggests that interventions can be effective in increasing hope in palliative care patients.


Sign in / Sign up

Export Citation Format

Share Document