ECT vs rTMS Structural Brain Changes: New Study in J Affective Disorders

 Out on PubMed, from investigators in Boston and Barcelona, is this study:


Brain volumetric correlates of electroconvulsive therapy versus transcranial magnetic stimulation for treatment-resistant depression.
Cano M, Lee E, Funes C, Barbour T, Ellard KK, Andreou B, Uribe S, Henry ME, Seiner S, Cardoner N, Soriano-Mas C, Camprodon JA.J Affect Disord. 2023 Apr 4:S0165-0327(23)00449-4. doi: 10.1016/j.jad.2023.03.093. Online ahead of print.

PMID: 37024015

The abstract is copied below:

Background: Electroconvulsive therapy (ECT) and repetitive transcranial magnetic stimulation (rTMS) are effective neuromodulation therapies for treatment-resistant depression (TRD). While ECT is generally considered the most effective antidepressant, rTMS is less invasive, better tolerated and leads to more durable therapeutic benefits. Both interventions are established device antidepressants, but it remains unknown if they share a common mechanism of action. Here we aimed to compare the brain volumetric changes in patients with TRD after right unilateral (RUL) ECT versus left dorsolateral prefrontal cortex (lDLPFC) rTMS.

Methods: We assessed 32 patients with TRD before the first treatment session and after treatment completion using structural magnetic resonance imaging. Fifteen patients were treated with RUL ECT and seventeen patients received lDLPFC rTMS.

Results: Patients receiving RUL ECT, in comparison with patients treated with lDLPFC rTMS, showed a greater volumetric increase in the right striatum, pallidum, medial temporal lobe, anterior insular cortex, anterior midbrain, and subgenual anterior cingulate cortex. However, ECT- or rTMS-induced brain volumetric changes were not associated with the clinical improvement.

Limitations: We evaluated a modest sample size with concurrent pharmacological treatment and without neuromodulation therapies randomization.

Conclusions: Our findings suggest that despite comparable clinical outcomes, only RUL ECT is associated with structural change, while rTMS is not. We hypothesize that structural neuroplasticity and/or neuroinflammation may explain the larger structural changes observed after ECT, whereas neurophysiological plasticity may underlie the rTMS effects. More broadly, our results support the notion that there are multiple therapeutic strategies to move patients from depression to euthymia.

Keywords: Electroconvulsive therapy; Structural magnetic resonance imaging; Transcranial magnetic stimulation; Treatment-resistant depression.

The article is here.
And from the text:


No surprise that ECT induces more powerful structural brain changes than rTMS, even RUL ECT, as in this comparison. This paper is heavily biased towards rTMS, stating multiple times its equivalency to ECT. The senior author has been a consultant to Neuronetics.



Comments

Post a Comment

Popular posts from this blog

ECT vs Ketamine: NEJM Article Sets Up False Equivalency

Image
Out on PubMed, from investigators in the US, is this study: Ketamine versus  ECT   for Nonpsychotic Treatment-Resistant Major Depression. Anand A, Mathew SJ, Sanacora G, Murrough JW, Goes FS, Altinay M, Aloysi AS, Asghar-Ali AA, Barnett BS, Chang LC, Collins KA, Costi S, Iqbal S, Jha MK, Krishnan K, Malone DA, Nikayin S, Nissen SE, Ostroff RB, Reti IM, Wilkinson ST, Wolski K, Hu B. N Engl J Med. 2023 May 24. doi: 10.1056/NEJMoa2302399. Online ahead of print. PMID:  37224232 The abstract is copied below: Background:  Electroconvulsive therapy (ECT) and subanesthetic intravenous ketamine are both currently used for treatment-resistant major depression, but the comparative effectiveness of the two treatments remains uncertain. Methods:  We conducted an open-label, randomized, noninferiority trial involving patients referred to ECT clinics for treatment-resistant major depression . Patients with treatment-resistant major depression without psychosis were recruited and assigned in a 1:1 rat
Read more

RUL ECT vs Low Amplitude Seizure Therapy (LAP-ST)

Image
Out on PubMed, from the team in Augusta, Georgia, is this study: Double-Blinded Randomized Pilot Clinical Trial Comparing Cognitive Side Effects of Standard Ultra-Brief Right Unilateral ECT to 0.5 A Low Amplitude Seizure Therapy (LAP-ST). Youssef NA, McCall WV, Ravilla D, McCloud L, Rosenquist PB. Brain Sci. 2020 Dec 13;10(12):E979. doi: 10.3390/brainsci10120979. PMID:  33322138 The pdf is here . And from the Introduction : In theory, LAP-ST can be helpful because of the direct effect of lower electric current, but the principal reason is that LAP-ST has a more focal electric field (EF) [ 34 , 35 ]. The current amplitude is the primary factor that drives the EF into brain regions located deeper in the brain and is responsible for cognition and memory such as the hippocampus and temporal lobe [ 33 , 35 ]. This extra focality of the EF can minimize or avoid high EF stimulation to the deeper hippocampal and temporal lobe regions [ 33 , 35 ]. Minimization of deeper stimulation by using LAP
Read more

ECT For Children at a University Hospital: New Study in JECT

Image
 Out on PubMed, from authors at Vanderbilt and Mass General,, is this article: Use of   ECT   for Children With and Without Catatonia: A Single-Site Retrospective Analysis. Smith JR, Baldwin I, Termini KA, McGonigle T, Vandekar S, Luccarelli J. J ECT. 2024 Jan 25. doi: 10.1097/YCT.0000000000000993. Online ahead of print. PMID:  38265759 The abstract is copied below: Objectives: The objective study was to investigate the safety and efficacy of electroconvulsive therapy (ECT) in a retrospective cohort of pediatric patients. Methods: A single-site retrospective analysis was conducted of patients aged younger than 18 years who received ECT in a private university hospital from January 28, 2012 to April 8, 2023. Treatment efficacy and adverse events were determined retrospectively through review of the medical record. Results: A total of 36 pediatric patients met the inclusion criteria. Catatonia was the most common presenting indication for ECT, followed by psychosis and suicidal ideation.
Read more