The Use of High-dose Diazepam in Combination With ECT for Treatment of Pediatric Catatonia.
Meierer Ellen E, Nilsson Matthew M, Gerwin Roslyn R
Pfizer, Inc. · GABRA1 · Small Molecule
diazepam is a small molecule developed by Pfizer, Inc.. It is approved for therapeutic indications via rectal.
| Brand Names | Stesolid, diazepam, Alpharma |
| Company | Pfizer, Inc. |
| Drug Class | Small Molecule |
| Molecular Target | GABRA1, GABRA2, GABRA3, GABRA5 |
| Route | Rectal |
| Status | Approved |
diazepam acts on 4 molecular targets:
| GABRA1 | gamma-aminobutyric acid type A receptor alpha1 subunit (DEE19, ECA4) |
| GABRA2 | gamma-aminobutyric acid type A receptor alpha2 subunit (DEE78, EIEE78) |
| GABRA3 | gamma-aminobutyric acid type A receptor alpha3 subunit (EPILX2) |
| GABRA5 | gamma-aminobutyric acid type A receptor alpha5 subunit (EIEE79, DEE79) |
diazepam is developed for 2 unique indications across 2 therapeutic areas.
| Therapeutic Area | Condition | Phase |
|---|---|---|
| Psychiatric disorders | Anxiety | ✓ Approved |
| Nervous system disorders | Epilepsy | ✓ Approved |
Meierer Ellen E, Nilsson Matthew M, Gerwin Roslyn R
Chaudhry Alvina A, Khan Muhammad Umair MU, Conway Barbara B, Hasan Syed Shahzad SS
Benzodiazepines (BZDs) are commonly prescribed for anxiety and insomnia but carry risks such as dependence, adverse drug reactions (ADRs) and mortality. Despite deprescribing efforts, the influence of recent prescribing trends, COVID-19 and adverse outcomes on prescribing patterns in England remains uncertain. This study evaluates trends in BZD prescribing, costs, and safety outcomes and explores their socioeconomic associations. This population-level observational study analysed prescribing, cost and ADR data for 14 BZDs using national datasets. Prescribing rates were standardized per 100 000 population, fatality ratios were calculated, and regression models assessed yearly changes by drug, region, and pandemic phase. Socioeconomic influences on prescribing were analysed using a generalized additive model. Total BZD prescribing decreased from 15562.34 items per 100 000 population in 2020 to 12284.01 in 2025, a mean annual change of -4.3% (95% CI: -4.5% to -4.03%), largely because of reduced prescribing of diazepam, temazepam and chlordiazepoxide. Conversely, specialist-use agents increased, including clobazam (6.36% per year, 95% CI: 0.34% to 12.39%) and midazolam (1.03% per year, 95% CI: -1.30% to 3.37%). Ethnicity influenced deprivation-related prescribing patterns, indicating disparities beyond socioeconomic status. The average lifetime fatality ratio across all BZDs was 4.5 deaths per 100 reported cases, with oxazepam the highest (17.9), followed by lorazepam (9.1) and alprazolam (8.6). Benzodiazepine prescribing in England continues to decline, reflecting successful deprescribing policies. However, increasing specialist use, persistent inequities, and drug-specific safety and cost concerns highlight the need for cautious prescribing, enhanced pharmacovigilance and equitable access.
Chowdhury Anika A, Khan Anika Tasnim AT, Zahan Zakia Akther ZA, Tabassum Zareen Z et al.
Posterior reversible encephalopathy syndrome (PRES) is a reversible neurological disorder most commonly triggered by eclampsia and characterized on imaging by vasogenic edema, typically involving the parieto-occipital regions. We describe a 26-year-old primigravida at 35 weeks of gestation who presented with headache, dyspnea, and a generalized tonic-clonic seizure, with severe hypertension (200/110 mmHg), 3+ proteinuria, serum creatinine (1.1 mg/dL), and platelet count (100,000/mm3) consistent with severe preeclampsia with superimposed eclampsia. She underwent emergency lower-segment cesarean section (LSCS) for delivery of a live neonate, with a second intraoperative seizure controlled with intravenous diazepam and magnesium sulfate. Postoperatively, she developed sudden bilateral visual loss without focal neurological deficit. Brain MRI showed bilateral, symmetric T2- and FLAIR-hyperintense signal in the parieto-occipital white matter without evidence of restricted diffusion on DWI/ADC a pattern of vasogenic edema diagnostic of PRES. She was treated with intravenous magnesium sulfate, antihypertensive therapy, and levetiracetam, with complete clinical recovery and radiological resolution on follow-up imaging. This case highlights eclamptic PRES as a cause of postoperative cortical visual loss and illustrates how the combination of T2/FLAIR signal change with preserved diffusion on MRI distinguishes reversible vasogenic edema from ischemic injury, supporting prompt, targeted management even in resource-limited settings.
Jha Aashutosh A, Adhikari Suman S, Poudel Sishir S, Niraula Oasis O et al.
Alcohol withdrawal (AW) results from abrupt cessation or reduction in chronic alcohol use, leading to central nervous system hyperexcitability and autonomic overactivity. AW poses significant cardiovascular stress, predisposing to myocardial ischemia via various mechanisms. A 46-year-old male with chronic heavy alcohol use and no known major cardiovascular risk factors presented with restlessness. On admission, he exhibited features of moderate alcohol withdrawal, including tremors, agitation, and disorientation. He was managed supportively in the intensive care unit with a titrated diazepam infusion, resulting in gradual improvement in withdrawal symptoms. On the 10th day, a routine ECG demonstrated an acute inferior wall ST-elevation myocardial infarction (STEMI), and the qualitative troponin I test was positive, despite the absence of ischemic symptoms. The underlying mechanism of myocardial infarction could not be definitively established because coronary angiography was declined. Although recent alcohol withdrawal may have contributed through persistent physiological stress, coronary artery vasospasm, myocardial oxygen supply-demand mismatch, platelet hyperactivity, or other mechanisms remain possible. The patient was fully oriented at the time of infarction, supporting the diagnosis of a silent myocardial infarction. This case report adds to the scarce literature on acute coronary events during hospitalization for severe alcohol withdrawal and emphasizes that the patient's silent STEMI may have arisen from multiple underlying mechanisms. It highlights the importance of maintaining a high index of suspicion for silent myocardial infarction in hospitalized patients recovering from alcohol withdrawal.
Koeda Michihiko M, Hosokawa En E, Kumagai Akihiro A, Ishikawa Yuki Y et al.
Depressive symptoms accompanied by autistic traits represent an important source of clinical heterogeneity. While aberrant functional connectivity (FC) within prefrontal networks has been implicated as a shared neural feature of both autism spectrum disorder (ASD) and depression, task-evoked FC abnormalities in individuals experiencing both remain poorly understood. This study employed functional near-infrared spectroscopy (fNIRS) to evaluate task-evoked FC during a verbal fluency task (VFT), with a focus on prefrontal network organization. Fifty neurotypical controls and 43 individuals experiencing depressive symptoms were enrolled. The depressive-state cohort was further subdivided into high autistic traits (DP_AQ-high) and low autistic traits (DP_AQ-low) subgroups based on Autism-Spectrum Quotient (AQ) scores. FC among channels in frontal, temporal, and inferior parietal regions was calculated using zero-lag Pearson correlation analysis of oxyhemoglobin (HbO₂) and deoxyhemoglobin (HbR) signals during the VFT. Between-group FC differences were evaluated using ANOVA for the Control versus depressive-state comparison, and medication-adjusted ANCOVA for the DP_AQ-high versus DP_AQ-low comparison, with diazepam-equivalent anxiolytic dosage and imipramine-equivalent antidepressant dosage as covariates. Relative to neurotypical controls, the depressive-state group exhibited decreased interhemispheric frontal FC across both chromophores, alongside network-specific FC increases and decreases. Within the depressive-state group, the DP_AQ-high subgroup consistently demonstrated increased interhemispheric frontoparietal FC across both chromophores, accompanied by localized intra-frontal FC reductions, compared with the DP_AQ-low subgroup. These findings suggest that autistic traits modulate task-evoked large-scale network organization within a clinically relevant depressive-state cohort and support the utility of fNIRS-based network analysis for characterizing neurobiological heterogeneity associated with depressive symptoms.
Matsui Kentaro K, Sugiura Ko K, Shimura Akiyoshi A, Takagi Shunsuke S et al.
Discontinuing benzodiazepines and benzodiazepine receptor agonists (BZ/BZRAs) remains challenging for patients with chronic insomnia despite safety concerns. This study evaluated whether continuous treatment with dual orexin receptor antagonists (DORAs) facilitates a reduction in BZ/BZRA doses among long-term users. This self-controlled (mirror-image) study, in which each patient served as their own control, used Japanese health insurance claims data (Dokenpo database, 2019-2024). Eligible patients had continuous BZ/BZRA use for ≥ 6 months and initiated suvorexant or lemborexant for ≥ 6 months. Changes in bedtime BZ/BZRA dose (diazepam equivalents) were compared between pre- and post-DORA periods. Logistic regression analyses identified factors associated with ≥ 50% dose reduction and BZ/BZRA discontinuation. Prior to DORA initiation, 605 patients were taking a mean of 1.9 ± 1.0 types of BZ/BZRAs at a pretreatment total daily dose of 8.2 ± 7.4 mg diazepam equivalent. Of these, 42.1% achieved ≥ 50% bedtime BZ/BZRA dose reduction and 21.3% achieved discontinuation. Mean bedtime doses decreased in both the suvorexant group (7.2 to 5.2 mg) and the lemborexant group (8.3 to 5.2 mg). In adjusted analyses, age ≥ 65 years was independently associated with both ≥ 50% reduction (odds ratio [OR] 2.485; 95% confidence interval [CI] 1.190-5.192; p = 0.015) and discontinuation (OR 2.636; 95% CI 1.158-6.000; p = 0.021). Lower pretreatment BZ/BZRA dose and lemborexant use were also associated with dose reduction and discontinuation. DORA treatment for at least six months may support BZ/BZRA dose reduction among long-term users, particularly in older patients. Discontinuing benzodiazepine and benzodiazepine receptor agonists (BZ/BZRAs) in patients with long-term use remains clinically challenging despite well-documented safety concerns. Whether sustained treatment with dual orexin receptor antagonists (DORAs) facilitates BZ/BZRA dose reduction in real-world practice has not been adequately examined in patients already exposed for six months or longer. Sustained DORA treatment for at least six months was associated with substantial bedtime BZ/BZRA dose reduction and discontinuation among long-term users, with older adults (aged 65 years or older) showing the highest odds of success. These findings support DORA co-administration as a practical pharmacological switching strategy to enable safer insomnia management, particularly in populations vulnerable to BZ/BZRA-related adverse events.
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