The Clinical Significance of the Impact of Vaping on Plasma Clozapine Levels | Chapter 4 | Disease and Health Research: New Insights Vol. 4

Background: Clozapine is an antipsychotic medication essential for treating treatment-resistant schizophrenia. Heinz Baumann and his team at Wander AG, a Swiss pharmaceutical company, first synthesized Clozapine in 1958. Its plasma levels are influenced by cytochrome P450 (CYP450) enzymes, particularly CYP1A2. Vaping and traditional smoking may impact clozapine metabolism.

 

Objective: This study aims to explore how vaping affects the plasma levels of clozapine, focusing on the pharmacokinetic interactions between clozapine and vaping constituents, and the implications for clinical practice.

 

Methods: A literature review was conducted to examine the interactions between nicotine smoking, CYP450 enzymes, and clozapine metabolism. Additionally, case reports were analyzed to understand the clinical implications for patients on clozapine who switch from smoking to vaping.

 

Results: Unlike traditional smoking, vaping often lacks combustion products like polycyclic aromatic hydrocarbons (PAHs), leading to reduced CYP1A2 induction. Case reports showed that switching from smoking to vaping often results in elevated plasma clozapine levels due to decreased CYP1A2 activity, causing adverse effects from toxicity. However, some vape products containing combustible products like aldehydes and carbonyls can induce CYP450 enzymes, leading to subtherapeutic plasma clozapine levels.

 

Conclusion: Switching from smoking to vaping may affect clozapine metabolism primarily through reduced activity of the CYP1A2 enzyme. This can lead to higher serum clozapine levels, hence increased risk of toxicity and deleterious adverse effects. But vaping can also lead to the induction of CYP450 enzymes thereby causing decreased plasma clozapine levels. So, the effect of vaping on plasma clozapine levels can be dependent on its constituent ingredients. Therefore, health professionals should carefully monitor plasma clozapine levels in patients who switch from smoking to vaping and adjust dosages as needed to maintain therapeutic efficacy and minimize adverse effects.

 

Author (s) Details

Nkechinyere Mary Harry
Vinnytsia National Pirogov Medical University, Vinnytsia Oblast, Ukraine.

 

Ibrahim L. Folorunsho
Badr Al Janoub Hospital, Najran, Saudi Arabia. 

 

Kenechukwu Anona
University of Ibadan, Ibadan, Nigeria.

 

Nnenna Okafor
College of Medicine, All Saints University, St Vincent and the Grenadines, Caribbean

 

Gibson O. Anugwom
Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, Texas, USA.

 

 

Please see the book here:- https://doi.org/10.9734/bpi/dhrni/v4/1759

Ion-channel Modulator: Panacea against Diabetic and Nicotine-induced Cataract | Chapter 7 | Challenges and Advances in Pharmaceutical Research Vol. 7

 Introduction: The pore-forming proteins known as ion-channels span the cell membrane and conduct the ions on either side of the membrane in a controlled manner. An important part of maintaining lens hydration and transmittance is the presence of inorganic ions including Na+, K+, Ca++, and Cl-. Smoking is regarded as a significant risk factor for the development of cataracts in people with uncontrolled diabetes. By disrupting the ionic balance across the lens epithelium and the production of free radicals, smoking cigarettes that contain nicotine worsens the development of cataracts. Based on this knowledge, we tested a number of medications against the streptozotocin (STZ) + nicotine-induced cataract paradigm, including lidocaine (as a Na+ and K+ channels blocker), nifedipine (a calcium antagonist), and phenylglycine.

Methodology: Using STZ and nicotine, diabetic aggression related to nicotine aggression was produced in rats. STZ (single dose of 52 mg/kg i.p.) and nicotine (0.3 mg/kg s.c. to a maximum dose of 2.1 mg/kg) were administered for 22 days in a row while also treating the right and left eyes with 1% and 2% concentrations of the test drug's ophthalmic preparation, which contains lidocaine, nifedipine, and phenylglycine. On the 23rd day of the experiment, several variables were measured, including the amounts of different ions (Na+, K+, Ca++, and Cl-), antioxidants (ascorbic acid, sulfhydryl, and glutathione), and fructose in the rat lens. Along with these investigations, we measured the serum ascorbic acid concentration and checked the experiment's blood glucose levels often.

Results: All animals in the negative control groups displayed lens opacity. This is because an accumulation of fructose causes the Na+-K+-ATPase pump to malfunction, which in turn causes a buildup of Na+ ions inside the membrane and, ultimately, a buildup of water and osmotic swelling of the lens. Not all of the test medications shown a protective effect, although the administration of lidocaine at the doses of 1% (right eye) and 2% (left eye) considerably (P 0.001) decreased the Na+ levels in comparison to the disease control group. Nifedipine has not provided any protection in the current investigation, although phenylglycine has demonstrated moderate protection in some of the study parameters. Due to its anti-oxidant and Na+ channel blocking properties, lidocaine has provided the best defence against cataracts brought on by diabetes and nicotine. linearity between 1 and 11 and 5 and 30 g/mL in terms of concentration.

Author(s) Details:

Vijay R. Chidrawar,
Department of Pharmacology, Raghavendra Institute of Pharmaceutical Education and Research, Ananthapuramu, India.

Shruti Shiromwar,
Department of Clinical Pharmacy, Universiti Sains Malaysia (USM), 11800 Penang, Malaysia.

Ahmed M. Aljameeli,
Faculty of Pharmacy, Department of Pharmacology, Northern Border University, Kingdom of Saudi Arabia.

Uma Maheshwararao Vattikutti,
Department of Pharmacognosy, Raghavendra Institute of Pharmaceutical Education and Research, Ananthapuramu, India.

Please see the link here: https://stm.bookpi.org/CAPR-V7/article/view/8370

Study on Physiological Effects of Nicotine | Chapter 7 | Research Aspects in Agriculture and Veterinary Sciences Vol. 1

 Nicotine is regarded to be the principal component in tobacco smoke that acts as a neurotoxin and is responsible for the majority of the negative effects on body functions. Nicotine has an impact on metabolic and cellular processes, as well as hormone secretions and haematological systems. The mice's haematological parameters, lipid profile, liver enzymes, and reproductive hormones were all altered when they were given nicotine levels.

Author (s) Details

Saima Sharif
Department of Zoology, Lahore College for Women University, Lahore, Pakistan.

Shagufta Naz
Department of Zoology, Lahore College for Women University, Lahore, Pakistan.

View Book :- https://stm.bookpi.org/RAAVS-V1/article/view/2421