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Amobarbital
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Amobarbital
please note:
- the content below is remote from Wikipedia
- it has been imported raw for GetWiki
{{Short description|Barbiturate}}- the content below is remote from Wikipedia
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Pharmacology
In an in vitro study in rat thalamic slices, amobarbital worked by activating GABAA receptors, which decreased input resistance, depressed burst and tonic firing, especially in ventrobasal and intralaminar neurons, while at the same time increasing burst duration and mean conductance at individual chloride channels; this increased both the amplitude and decay time of (Wiktionary:inhibit|inhibitory) postsynaptic currents.JOURNAL, Kim HS, Wan X, Mathers DA, Puil E, Selective GABA-receptor actions of amobarbital on thalamic neurons, British Journal of Pharmacology, 143, 4, 485â94, October 2004, 15381635, 1575418, 10.1038/sj.bjp.0705974, Amobarbital has been used in a study to inhibit mitochondrial electron transport in the rat heart in an attempt to preserve mitochondrial function following reperfusion.JOURNAL, Stewart S, Lesnefsky EJ, Chen Q, Reversible blockade of electron transport with amobarbital at the onset of reperfusion attenuates cardiac injury, Translational Research, 153, 5, 224â31, May 2009, 19375683, 10.1016/j.trsl.2009.02.003, A 1988 study found that amobarbital increases benzodiazepine receptor binding in vivo with less potency than secobarbital and pentobarbital (in descending order), but greater than phenobarbital and barbital (in descending order).JOURNAL, Miller LG, Deutsch SI, Greenblatt DJ, Paul SM, Shader RI, Acute barbiturate administration increases benzodiazepine receptor binding in vivo, Psychopharmacology, 96, 3, 385â90, 1988, 2906155, 10.1007/BF00216067, 29934652, (Secobarbital > pentobarbital > amobarbital > phenobarbital > barbital)It has an {{LD50}} in mice of 212{{nbsp}}mg/kg s.c. {{Citation needed|date=November 2011}}Metabolism
Amobarbital undergoes both hydroxylation to form 3'-hydroxyamobarbital,JOURNAL, Maynert EW, The alcoholic metabolites of pentobarbital and amobarbital in man, The Journal of Pharmacology and Experimental Therapeutics, 150, 1, 118â21, October 1965, 5855308, and N-glucosidationJOURNAL, Tang BK, Kalow W, Grey AA, Amobarbital metabolism in man: N-glucoside formation, Research Communications in Chemical Pathology and Pharmacology, 21, 1, 45â53, July 1978, 684279, to form 1-(beta-D-glucopyranosyl)-amobarbital.JOURNAL, Soine PJ, Soine WH, High-performance liquid chromatographic determination of the diastereomers of 1-(beta-D-glucopyranosyl)amobarbital in urine, Journal of Chromatography, 422, 309â14, November 1987, 3437019, 10.1016/0378-4347(87)80468-1,Indications
Approved
Unapproved/off-label
When given slowly by an intravenous route, sodium amobarbital has a reputation for acting as a so-called truth serum. Under the influence, a person will divulge information that under normal circumstances they would block. This was most likely due to loss of inhibition. As such, the drug was first employed clinically by William Bleckwenn at the University of Wisconsin to circumvent inhibitions in psychiatric patients. The use of amobarbital as a truth serum has lost credibility due to the discovery that a subject can be coerced into having a "false memory" of the event.JOURNAL, Stocks JT, Recovered memory therapy: a dubious practice technique, Social Work, 43, 5, 423â36, September 1998, 9739631, 10.1093/sw/43.5.423, {{subscription required}}The drug may be used intravenously to interview patients with catatonic mutism, sometimes combined with caffeine to prevent sleep.JOURNAL, McCall WV, The addition of intravenous caffeine during an amobarbital interview, Journal of Psychiatry & Neuroscience, 17, 5, 195â7, November 1992, 1489761, 1188455, It was used by the United States armed forces during World War II in an attempt to treat shell shock and return soldiers to the front-line duties.WEB,weblink Battle of the Bulge - program transcript, Use of sodium amytal during WWII, Ben Kimmelman, Captain, 28th Infantry: The assumptions were that this would have some kind of cathartic effect, the sodium amytal, which the men called blue 88's. You know, the most effective artillery piece of the Germans was the 88 and this was blue 88s, because the sodium amytal was a blue tablet., PBS, 2017-08-24,weblink" title="web.archive.org/web/20090314070438weblink">weblink 2009-03-14, live, This use has since been discontinued as the powerful sedation, cognitive impairment, and dis-coordination induced by the drug greatly reduced soldiers' usefulness in the field. Amobarbital was once manufactured in the US by Eli Lilly Pharmaceuticals under the brand name Amytal in capsule form. It was discontinued in the early 80s, largely replaced by the benzodiazepine family of drugs. Amobarbital was also widely abused, known on the streets as "blue heavens" because of their blue capsule.Contraindications
missing image!
- TruthSerum.jpg -
A vial of Amytal sodium
The following drugs should be avoided when taking amobarbital: - TruthSerum.jpg -
A vial of Amytal sodium
- Antiarrhythmics, such as verapamil and digoxin
- Antiepileptics, such as phenobarbital or carbamazepine
- Antihistamines, such as doxylamine and clemastine
- Antihypertensives, such as atenolol and propranolol
- Ethanol
- Benzodiazepines, such as diazepam, clonazepam, nitrazepam, alprazolam, or lorazepam
- Chloramphenicol
- Chlorpromazine
- Cyclophosphamide
- Ciclosporin
- Digitoxin
- Doxorubicin
- Doxycycline
- Methoxyflurane
- Metronidazole
- Narcotic analgesics, such as morphine and oxycodone
- Quinine
- Steroids, such as prednisone and cortisone
- Theophylline
- Warfarin
Interactions
Amobarbital has been known to decrease the effects of hormonal birth control.WEB,weblink Amobarbital | Memorial Sloan Kettering Cancer Center,Overdose
Some side effects of overdose include confusion (severe); decrease in or loss of reflexes; drowsiness (severe); fever; irritability (continuing); low body temperature; poor judgment; shortness of breath or slow or troubled breathing; slow heartbeat; slurred speech; staggering; trouble in sleeping; unusual movements of the eyes; weakness (severe). Severe overdose may result in death without intervention.Chemistry
(File:Amobarbital synthesis.png|800px)Amobarbital (5-ethyl-5-isoamylbarbituric acid), like all barbiturates, is synthesized by reacting malonic acid derivatives with urea derivatives. In particular, in order to make amobarbital, α-ethyl-α-isoamylmalonic ester is reacted with urea (in the presence of sodium ethoxide).Society and culture
It has been used to convict alleged murderers such as Andres English-Howard, who strangled his girlfriend to death but claimed innocence. He was surreptitiously administered the drug by his lawyer, and under the influence of it he revealed why he strangled her and under what circumstances.WEB,weblink Truth Serum: A Possible Weapon, CBS News, 60 Minutes, February 11, 2009, Rebecca, Leung, vanc, December 4, 2005,weblink" title="web.archive.org/web/20050405060256weblink">weblink April 5, 2005, live, On the night of August 28, 1951, the housekeeper of actor Robert Walker found him to be in an emotional state. She called Walker's psychiatrist who arrived and administered amobarbital for sedation. Walker was allegedly drinking prior to his emotional outburst, and it is believed the combination of amobarbital and alcohol resulted in a severe reaction. As a result, he passed out and stopped breathing, and all efforts to resuscitate him failed. Walker died at 32 years old.The British actor and comedian Tony Hancock killed himself in Australia in 1968 using the drug in combination with alcohol.Eli Lilly manufactured amobarbital under the brand name Amytal, it was discontinued in the 1980s replaced largely by the benzodiazepine family of drugs. Amytal was also widely abused. Street names for amobarbital include "blues", "blue angels", "blue birds", "blue devils", and "blue heavens" due to their blue capsule.WEB,weblink blue devils (amobarbital) - Memidex dictionary/thesaurus, www.memidex.com,Cultural references
In Len Deighton's 1967 novel An Expensive Place to Die, a combination of amytal and LSD is used to make the unnamed protagonist respond to questioning about his activities.In Thomas Pynchon's 1973 novel Gravity's Rainbow, sodium amytal is used by a military intelligence unit as some kind of truth serum to extract Tyrone Slothrop's (the novel's protagonist) ideas on racism of white Americans against Afro-Americans during the 1930s in his home state of Massachusetts (Chapter 1).In the 1975 Columbo episode "A Deadly State of Mind" the victim Nadia Donner has Amobarbital found in her blood according to the autopsy report.{{Citation |last=Hart |first=Harvey |title=A Deadly State of Mind |date=1975-04-27 |url=https://www.imdb.com/title/tt0072801/?ref_=tttrv_ov |access-date=2024-01-11 |series=Columbo |others=Peter Falk, George Hamilton, Lesley Ann Warren}}{{Citation |title=A Deadly State of Mind {{!}} Echoes of Columbo |url=https://www.youtube.com/watch?v=wB6hqrBcTdQ |access-date=2024-01-11 |language=en}}WEB, 2018-11-18, Episode review: Columbo A Deadly State of Mind,weblink 2024-01-11, THE COLUMBOPHILE BLOG, en-US, In the 1994 comedic action thriller True Lies, the protagonist Harry Tasker (portrayed by Arnold Schwarzenegger) is given sodium amytal as a truth serum, when questioned by terrorists.In 2001, the (Law & Order: Special Victims Unit) episode "Repression" ((Law & Order: Special Victims Unit (season 3)|Season 3, Episode 1)), a therapist (Shirley Knight) treats her patient with "sodium amytal". The character Dr. (George Huang (Law & Order: Special Victims Unit)|George Huang) (BD Wong) claims that the drug leaves a patient so susceptible to suggestion, that the therapist is able to implant false memories in the patient.In 2003, the animated series Sealab 2021 season 3, episode 7, "Tourist Season", Dr. Quentin Q. Quinn, voiced by Brett Butler, uses "sodium amytal" to induce amnesia in a group of tourists, in order to prevent them from taking action against Sealab as a result of a hare-brained scheme by Capt. Murphy. He gives the dose in a free alcoholic beverage as a parting gift before the tourists leave, and in quantities he describes that could "make an elephant forget".In the 2005 movie, (Hellraiser: Hellworld), the main antagonist uses "sodium amytal" to secretly anesthetize the people he believes were responsible for his son's death, and induce extreme hallucinations in them.In 2016, television drama A Fist Within Four Walls episode 14, Man Zeun (portrayed by Princeton Lock) uses sodium amytal in an attempt to force gambling addict Lee Fat into paying debts.In 2022, in "Diophantine Pseudonym", Episode 06 of Dan Brown's The Lost Symbol, sodium amytal is used by the CIA as a truth serum.See also
Notes
{{Reflist}}{{Hypnotics and sedatives}}{{GABAAR PAMs}}- content above as imported from Wikipedia
- "Amobarbital" does not exist on GetWiki (yet)
- time: 1:31am EDT - Sat, May 18 2024
- "Amobarbital" does not exist on GetWiki (yet)
- time: 1:31am EDT - Sat, May 18 2024
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