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Aburahma Dissertation 111021-.pdf (4.5 MB)

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Phenylethylamine Derivatives: Pharmacological and Toxicological Studies

Aburahma, Amal
http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1636041464110327

Abstract Details

2021, Doctor of Philosophy (Ph.D.), Bowling Green State University, Photochemical Sciences.
The purpose of this dissertation is to discuss the theory, methodology and assessment of the pharmacological and toxicological effects of phenylethylamines in two targeted areas: First, viability of utilizing a retrodialysis in vivo experimental model to assess the differences in synaptic dopamine (DA) concentrations under direct perfusion of two structurally and yet pharmacodynamically different synthetic cathinones (“bath salts”). Second, the relationship between the mechanisms underlying phenylethylamine-induced hyperthermia (PIH) and gut microbiome composition and diversity, a research area which remains poorly investigated in the current literature. For the first part of our research, we suggest the utilization of retrodialysis technique to locally deliver the drugs under investigation to the targeted brain area and assess the resulting changes in DA concentrations using High Performance Liquid Chromatography Coupled with Electrochemical Detection (HPLC-EC). We report that retrodialysis was successfully incorporated to deliver synthetic cathinones to the caudate putamen while utilizing HPLC-EC detection to assess extracellular DA changes within the targeted area. In the second part of our research, we suggest a new approach in exploring the relationship between PIH mechanisms and gut microbiome structure and richness by employing bidirectional fecal microbial transplant (FMT) via oral gavage as a method of transferring the hyperthermic phenotypic response upon methamphetamine (METH) treatment between male and female rat models. Through this modality, we can observe the changes in gut microbiome populations at each stage of treatment and how these changes affect PIH. We observe that although bidirectional FMT model employed repopulated the gut of the respective animals, gut microbiome does not seem to play a role in the sex-based differences in PIH between male and female rats. For the third part of the presented research, we explored the role of the gut-adrenal axis in 3,4-methylenedioxymethamphetamine (MDMA) treatment in SHAM and adrenalectomized (ADX) rat model. Additionally, we sought to observe the changes in core body temperature and gut microbiome structure and richness after exogenous administration of corticosterone (CORT) or norepinephrine (NE) to ADX animals. We observe distinct differences in the hyperthermic response and gut microbiome diversity before and after treatment in all animal groups assessed.
Jon Sprague, Ph.D. (Advisor)
Raymond Larsen, Ph.D. (Committee Member)
Travis Worst, Ph.D. (Committee Member)
Craig Zirbel, Ph.D. (Other)
167 p.
Chemistry; Pharmacology; Toxicology
Drugs of abuse; Phenylethylamines; Hyperthermia; Microdialysis; FMT; Gut microbiome; methamphetamine; MDMA; MDPV

Recommended Citations

Citations

  • Aburahma, A. (2021). Phenylethylamine Derivatives: Pharmacological and Toxicological Studies [Doctoral dissertation, Bowling Green State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1636041464110327

    APA Style (7th edition)

  • Aburahma, Amal. Phenylethylamine Derivatives: Pharmacological and Toxicological Studies. 2021. Bowling Green State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1636041464110327.

    MLA Style (8th edition)

  • Aburahma, Amal. "Phenylethylamine Derivatives: Pharmacological and Toxicological Studies." Doctoral dissertation, Bowling Green State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1636041464110327

    Chicago Manual of Style (17th edition)

bgsu1636041464110327
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This open access ETD is published by Bowling Green State University and OhioLINK.