Alcohol has many effects on brain function and hence on human behavior, ranging from anxiolytic and mild disinhibitory effects, sedation and motor incoordination, amnesia, emesis, hypnosis and eventually unconsciousness. In recent years a variety of studies have shown that acute and chronic exposure to alcohol can modulate ion channels that regulate excitability. Modulation of intrinsic excitability provides another way in which alcohol can influence neuronal network activity, in addition to its actions on synaptic inputs. In this review, we review "low dose" effects [between 2 and 20 mM EtOH], and "medium dose"; effects [between 20 and 50 mM], by considering in turn each of the many networks and brain regions affected by alcohol, and thereby attempt to integrate in vitro physiological studies in specific brain regions (e.g. amygdala, ventral tegmental area, prefrontal cortex, thalamus, cerebellum etc.) within the context of alcohol's behavioral actions in vivo (e.g. anxiolysis, euphoria, sedation, motor incoordination). This article is part of the Special Issue entitled "Alcoholism".
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http://dx.doi.org/10.1016/j.neuropharm.2017.04.007 | DOI Listing |
Cureus
December 2024
Anaesthesiology, Gajra Raja Medical College, Jaya Arogya Group of Hospitals, Gwalior, IND.
Introduction: The brachial plexus block is one of the peripheral blocks, beneath which the majority of upper limb surgical procedures are carried out. During upper limb surgery, a supraclavicular nerve block is an excellent substitute for general anesthesia.
Aim: This is a clinical comparative study of dexmedetomidine, dexamethasone, and clonidine as adjuvants to local anesthetics in supraclavicular brachial plexus block.
Cureus
December 2024
Anesthesiology and Critical Care, Uttar Pradesh University of Medical Sciences, Etawah, IND.
Background: In epidural anaesthesia, the addition of an adjuvant to local anaesthetics enhances the efficacy, thereby providing increased duration and intensity of blockade in lower limb surgeries. The aim was to compare the efficacy, onset, and duration of sensory and motor blockade; haemodynamic changes; and sedative and analgesic effects of nalbuphine, clonidine, and dexmedetomidine as an adjuvant to ropivacaine in epidural anaesthesia.
Methodology: A prospective, randomised, double-blind study among 90 patients after taking consent was divided into three groups (30 patients each; Group D received 15 ml of 0.
Paediatr Drugs
January 2025
Springer Nature, Private Bag 65901, Mairangi Bay, Auckland, 0754, New Zealand.
Oral ganaxolone (ZTALMY), a synthetic analogue of the endogenous neuroactive steroid allopregnanolone, acts as a positive allosteric modulator of synaptic and extra-synaptic γ-aminobutyric acid (GABA) type A receptor function in the CNS. In the EU and the UK, it is approved for the adjunctive treatment of epileptic seizures associated with cyclin-dependent kinase-like 5 (CDKL5) deficiency disorder (CDD) in patients aged 2-17 years. In a multinational phase III study (Marigold), 17 weeks' therapy with adjunctive ganaxolone, administered orally three times daily with food, significantly reduced 28-day major motor seizure frequency from baseline versus placebo in patients aged 2-19 years with CDD-associated refractory epilepsy.
View Article and Find Full Text PDFActa Anaesthesiol Scand
February 2025
Department of Brain and Spinal Cord Injury, Neuroscience Centre, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark.
Background: The harm-benefit balance for early out-of-bed mobilisation of patients with severe acquired brain injury (ABI) in neurointensive care units (neuro-ICUs) is unclear, and there are no clinical guidelines. This study aimed to survey the current clinical practice and perceptions among clinicians involved in first out-of-bed mobilisation in Scandinavian neuro-ICUs.
Methods: This was a cross-sectional, anonymous, web-based survey; the reporting follows the recommended CROSS checklist.
A 78-year-old woman with a prosthetic hip dislocation underwent a pericapsular nerve group block for regional anesthesia. The hip spontaneously reduced before manual intervention, likely due to the block's analgesic and muscle-relaxing effects. Compared to other techniques, this block effectively targets hip innervation while sparing motor function.
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