7 research outputs found
'Acts of Extravagance and Folly’: the conception and control of transgressive masculinity in a Victorian cause célèbre
Based on the prosecution of Ernest Boulton and William Park in 1870, the cross-dressing cause célèbre of the Victorian period, this Thesis explores the complex interplay of gendered nineteenth century narratives that emerged in both public and institutional discourse as a result of the arrest and prosecution for conspiracy to commit sodomy of the male cross-dressers and their acquaintances. Within the current historiography of the nineteenth century the regulation of male cross-dressers has been associated with the reflexive homophobia that has come to dominate modern interpretations of Victorian conceptions of male gender deviance. Whilst accepting that the case of Boulton and Park has rightly found its place within the established narrative histories of male sexuality this Thesis argues that the case, and indeed the image of the male cross-dresser in general, illuminates much more than nascent Victorian conceptions of homosexuality.
The effeminacy of the cross-dresser, although universally stigmatised, is shown to represent a multitude of social ills ranging from economic indolence to moral degeneracy, placing the cross-dresser at the nexus of bourgeoisie social anxiety. Through the detailed analysis of legal transcripts and press reports this Thesis demonstrates the significance of the analysis of the male cross-dresser beyond the narrow confines of the history of sexuality. The prosecution of Boulton and Park attests to more than the increasingly reactionary policing of bourgeois conceptions of masculinity during the mid to late nineteenth century. The unprecedented publicity that accompanied the case combined with the cross-dresser’s ability to unite previously disparate strands of deviant discourses, like those of the female prostitute and male sodomite, will be shown to represent a rare moment in which the totality of bourgeois anxiety was manifest, a moment in which the cross-dresser became the gendered folk devil for an age of ideological temperance
Synthesis and Pharmacological Profiling of the Metabolites of Synthetic Cannabinoid Drugs APICA, STS-135, ADB-PINACA, and 5F-ADB-PINACA
Synthetic
cannabinoids (SCs) containing a 1-pentyl-1-<i>H</i> substituted
indole or indazole are abused around the world and are
associated with an array of serious side effects. These compounds
undergo extensive phase 1 metabolism after ingestion with little understanding
whether these metabolites are contributing to the cannabimimetic activity
of the drugs. This work presents the synthesis and pharmacological
characterization of the major metabolites of two high concern SCs;
APICA and ADB-PINACA. In a fluorometric assay of membrane potential,
all metabolites that did not contain a carboxylic acid functionality
retained potent activity at both the CB<sub>1</sub> (EC<sub>50</sub> = 14–787 nM) and CB<sub>2</sub> (EC<sub>50</sub> = 5.5–291
nM) receptors regardless of heterocyclic core or 3-carboxamide substituent.
Of note were the 5-hydroxypentyl and 4-pentanone metabolites which
showed significant increases in CB<sub>2</sub> functional selectivity.
These results suggest that the metabolites of SCs potentially contribute
to the overall pharmacological profile of these drugs
Pharmacology of Cumyl-Carboxamide Synthetic Cannabinoid New Psychoactive Substances (NPS) CUMYL-BICA, CUMYL-PICA, CUMYL-5F-PICA, CUMYL-5F-PINACA, and Their Analogues
Synthetic
cannabinoids (SC) are the largest class of new psychoactive substances
(NPS), and are increasingly associated with serious adverse effects.
The majority of SC NPS are 1,3-disubstituted indoles and indazoles
featuring a diversity of subunits at the 1- and 3-positions. Most
recently, cumyl-derived indole- and indazole-3-carboxamides have been
detected by law enforcement agencies and by emergency departments.
Herein we describe the synthesis, characterization, and pharmacology
of SCs CUMYL-BICA, CUMYL-PICA, CUMYL-5F-PICA, CUMYL-PINACA, CUMYL-5F-PINACA,
and related analogues. All cumyl-derived SCs were potent, efficacious
agonists at CB<sub>1</sub> (EC<sub>50</sub> = 0.43–12.3 nM)
and CB<sub>2</sub> (EC<sub>50</sub> = 11.3–122 nM) receptors
in a fluorometric assay of membrane potential, with selectivity for
CB<sub>1</sub> activation (3.1–53 times over CB<sub>2</sub>). CUMYL-PICA and CUMYL-5F-PICA were evaluated in rats using biotelemetry,
and induced hypothermia and bradycardia at doses of 1 mg/kg. Hypothermia
was reversed by pretreatment with a CB<sub>1</sub>, but not CB<sub>2</sub>, antagonist, confirming that cumyl-derived SCs are cannabimimetic
in vivo
Pharmacology of Valinate and <i>tert</i>-Leucinate Synthetic Cannabinoids 5F-AMBICA, 5F-AMB, 5F-ADB, AMB-FUBINACA, MDMB-FUBINACA, MDMB-CHMICA, and Their Analogues
Indole
and indazole synthetic cannabinoids (SCs) featuring l-valinate
or l-<i>tert</i>-leucinate pendant
group have recently emerged as prevalent recreational drugs, and their
use has been associated with serious adverse health effects. Due to
the limited pharmacological data available for these compounds, 5F-AMBICA,
5F-AMB, 5F-ADB, AMB-FUBINACA, MDMB-FUBINACA, MDMB-CHMICA, and their
analogues were synthesized and assessed for cannabimimetic activity
in vitro and in vivo. All SCs acted as potent, highly efficacious
agonists at CB<sub>1</sub> (EC<sub>50</sub> = 0.45–36 nM) and
CB<sub>2</sub> (EC<sub>50</sub> = 4.6–128 nM) receptors in
a fluorometric assay of membrane potential, with a general preference
for CB<sub>1</sub> activation. The cannabimimetic properties of two
prevalent compounds with confirmed toxicity in humans, 5F-AMB and
MDMB-FUBINACA, were demonstrated in vivo using biotelemetry in rats.
Bradycardia and hypothermia were induced by 5F-AMB and MDMB-FUBINACA
doses of 0.1–1 mg/kg (and 3 mg/kg for 5F-AMB), with MDMB-FUBINACA
showing the most dramatic hypothermic response recorded in our laboratory
for any SC (>3 °C at 0.3 mg/kg). Reversal of hypothermia by
pretreatment
with a CB<sub>1</sub>, but not CB<sub>2</sub>, antagonist was demonstrated
for 5F-AMB and MDMB-FUBINACA, consistent with CB<sub>1</sub>-mediated
effects in vivo. The in vitro and in vivo data indicate that these
SCs act as highly efficacious CB receptor agonists with greater potency
than Δ<sup>9</sup>-THC and earlier generations of SCs
Development of Bright and Biocompatible Nanoruby and Its Application to Background-Free Time-Gated Imaging of G‑Protein-Coupled Receptors
At
the forefront of developing fluorescent probes for biological
imaging applications are enhancements aimed at increasing their brightness,
contrast, and photostability, especially toward demanding applications
of single-molecule detection. In comparison with existing probes,
nanorubies exhibit unlimited photostability and a long emission lifetime
(∼4 ms), which enable continuous imaging at single-particle
sensitivity in highly scattering and fluorescent biological specimens.
However, their wide application as fluorescence probes has so far
been hindered by the absence of facile methods for scaled-up high-volume
production and molecularly specific targeting. The present work encompasses
the large-scale production of colloidally stable nanoruby particles,
the demonstration of their biofunctionality and negligible cytotoxicity,
as well as the validation of its use for targeted biomolecular imaging.
In addition, optical characteristics of nanorubies are found to be
comparable or superior to those of state-of-the-art quantum dots.
Protocols of reproducible and robust coupling of functional proteins
to the nanoruby surface are also presented. As an example, NeutrAvidin-coupled
nanoruby show excellent affinity and specificity to μ-opioid
receptors in fixed and live cells, allowing wide-field imaging of
G-protein coupled receptors with single-particle sensitivity
The Synthesis and Pharmacological Evaluation of Adamantane-Derived Indoles: Cannabimimetic Drugs of Abuse
Two novel adamantane derivatives,
adamantan-1-ylÂ(1-pentyl-1<i>H</i>-indol-3-yl)Âmethanone (AB-001)
and <i>N</i>-(adamtan-1-yl)-1-pentyl-1<i>H</i>-indole-3-carboxamide (SDB-001), were recently identified as cannabimimetic
indoles of abuse. Conflicting anecdotal reports of the psychoactivity
of AB-001 in humans, and a complete dearth of information about the
bioactivity of SDB-001, prompted the preparation of AB-001, SDB-001,
and several analogues intended to explore preliminary structure–activity
relationships within this class. This study sought to elucidate which
structural features of AB-001, SDB-001, and their analogues govern
the cannabimimetic potency of these chemotypes in vitro and in vivo.
All compounds showed similar full agonist profiles at CB<sub>1</sub> (EC<sub>50</sub> = 16–43 nM) and CB<sub>2</sub> (EC<sub>50</sub> = 29–216 nM) receptors in vitro using a FLIPR membrane potential
assay, with the exception of SDB-002, which demonstrated partial agonist
activity at CB<sub>2</sub> receptors. The activity of AB-001, AB-002,
and SDB-001 in rats was compared to that of Δ<sup>9</sup>-tetrahydrocannabinol
(Δ<sup>9</sup>-THC) and cannabimimetic indole JWH-018 using
biotelemetry. SDB-001 dose-dependently induced hypothermia and reduced
heart rate (maximal dose 10 mg/kg) with potency comparable to that
of Δ<sup>9</sup>-tetrahydrocannabinol (Δ<sup>9</sup>-THC,
maximal dose 10 mg/kg), and lower than that of JWH-018 (maximal dose
3 mg/kg). Additionally, the changes in body temperature and heart
rate affected by SDB-001 are of longer duration than those of Δ<sup>9</sup>-THC or JWH-018, suggesting a different pharmacokinetic profile.
In contrast, AB-001, and its homologue, AB-002, did not produce significant
hypothermic and bradycardic effects, even at relatively higher doses
(up to 30 mg/kg), indicating greatly reduced potency compared to Δ<sup>9</sup>-THC, JWH-018, and SDB-001
Data_Sheet_1_Synthesis and pharmacological evaluation of newly detected synthetic cannabinoid receptor agonists AB-4CN-BUTICA, MMB-4CN-BUTINACA, MDMB-4F-BUTICA, MDMB-4F-BUTINACA and their analogs.docx
Synthetic cannabinoid receptor agonists (SCRAs) continue to make up a significant portion new psychoactive substances (NPS) detected and seized worldwide. Due to their often potent activation of central cannabinoid receptors in vivo, use of SCRAs can result in severe intoxication, in addition to other adverse health effects. Recent detections of AB-4CN-BUTICA, MMB-4CN-BUTINACA, MDMB-4F-BUTICA and MDMB-4F-BUTINACA mark a continuation in the appearance of SCRAs bearing novel tail substituents. The proactive characterization campaign described here has facilitated the detection of several new SCRAs in toxicological case work. Here we detail the synthesis, characterization, and pharmacological evaluation of recently detected SCRAs, as well as a systematic library of 32 compounds bearing head, tail, and core group combinations likely to appear in future. In vitro radioligand binding assays revealed most compounds showed moderate to high affinity at both CB1 (pKi = 2 (pKi = 5.49 ± 0.03 to 9.92 ± 0.09 M) receptors. In vitro functional evaluation using a fluorescence-based membrane potential assay showed that most compounds were sub-micromolar to sub-nanomolar agonists at CB1 (pEC50 = 2 (pEC50 = 5.92 ± 0.16 to 8.64 ± 0.15 M) receptors. An in silico receptor-ligand docking approach was utilized to rationalize binding trends for CB2 with respect to the tail substituent, and indicated that rigidity in this region (i.e., 4-cyanobutyl) was detrimental to affinity.</p