https://stm2.bookpi.org/TOPRDCM <p>Oxidative stress and apoptosis are pivotal mechanisms underlying cellular dysfunction and disease progression in numerous pathological conditions. Throughout my research career, I have been deeply engaged in exploring how targeted modulation of these pathways, particularly at the mitochondrial and plasma membrane levels, can restore cellular redox balance and improve cell survival. My investigations, especially in sperm cell models, consistently highlighted the importance of addressing oxidative damage at the subcellular level. These efforts revealed that by targeting specific enzymes responsible for oxidative stress or mimicking the activity of natural antioxidant enzymes, it is possible to mitigate oxidative injury without disrupting other vital cellular metabolism.</p> <p>This book, <em>Therapeutic Targeting of Oxidative and Apoptotic Pathways to Maintain Redox Homeostasis in Diverse Disease and Cellular Models</em>, emerges from these foundational studies and my conviction that integrated, targeted pharmacological interventions hold tremendous promise in combating oxidative stress-related diseases. The work systematically addresses a wide array of systemic diseases and pathological conditions where oxidative stress plays a central role, ranging from neurodegenerative and cardiovascular diseases to metabolic dysfunctions, reproductive disorders, and the challenges associated with cryopreservation. Special emphasis is placed on pathological scenarios where metal overload leads to enhanced reactive oxygen species (ROS) production, lipid peroxidation, and apoptosis.</p> <p>The manuscript is structured around critical therapeutic categories that collectively represent the most advanced and effective strategies in oxidative stress modulation and apoptosis prevention. These include lipid peroxidation inhibitors and aldehyde scavengers, metal chelators, GSH mimetics or enhancers, xanthine oxidase and nitric oxide synthase inhibitors, mitochondrial-targeted antioxidants, NADPH oxidase inhibitors, apoptotic pathway inhibitors, and antioxidant enzymes (SOD, catalase, and GPx) mimetics. Each topic presents a compilation and characterisation of pharmacological agents based on their observed effects in diverse disease and cellular models as reported in the scientific literature. Particular attention has been given to their mechanistic roles and therapeutic potentials across a spectrum of oxidative stress-associated diseases and reproductive dysfunctions. Additionally, a dedicated section explores oxidative stress management in cryopreservation, a field where maintaining cellular integrity during freezing and thawing processes remains a major challenge.</p> <p>This book aims to serve as a comprehensive reference for researchers, academicians, and clinicians working in pharmacology, toxicology, reproductive biology, and biomedical sciences. It is my hope that this work will facilitate deeper understanding and inspire the development of innovative therapies that target oxidative and apoptotic pathways with precision. Ultimately, the insights presented in this book aspire to translate from bench to bedside, offering tangible benefits for both human and animal health.</p> <p>I sincerely hope that this book will serve as a valuable and enduring resource, guiding future research and clinical applications in the ongoing quest to protect cellular integrity and preserve life.</p> en-US Therapeutic Targeting of Oxidative and Apoptotic Pathways to Maintain Redox Homeostasis in Diverse Disease and Cellular Models https://stm2.bookpi.org/TOPRDCM/article/view/180 <p><strong>Introduction: </strong>Oxidative stress results from an imbalance between the generation of reactive oxygen species (ROS) and the body's antioxidant defences. This imbalance contributes significantly to the pathogenesis of a wide array of disorders, including neurodegenerative, cardiovascular, metabolic, and reproductive conditions, as well as adverse outcomes related to cryopreservation. A critical downstream consequence of ROS accumulation is lipid peroxidation (LPO), which leads to the formation of cytotoxic aldehydes like malondialdehyde (MDA) and 4-hydroxynonenal (4-HNE). These aldehydes form adducts with cellular macromolecules, disrupting homeostasis and cellular function.</p> <p><strong>Central Themes: </strong>This work emphasises the critical interplay between oxidative stress, lipid peroxidation, and apoptosis in the progression of disease and cellular dysfunction. It explores how ROS trigger biochemical cascades that compromise redox balance, damage cellular macromolecules, and activate programmed cell death. It further highlights the molecular mechanisms linking oxidative injury to apoptosis, emphasising the roles of caspases, Bcl-2 family proteins, and mitochondrial signalling. These interconnected pathways form the foundation for therapeutic targeting, as oxidative stress and cell death represent converging points in a wide spectrum of pathological and cryopreservation-related conditions.</p> <p><strong>Key Therapeutic Approaches: </strong>A comprehensive categorisation of pharmacological strategies aimed at mitigating oxidative stress and modulating apoptosis is presented, highlighting their therapeutic relevance across various pathophysiological conditions. Among the most widely studied interventions are LPO inhibitors and aldehyde scavengers such as aminoguanidine and pyridoxamine, which neutralise reactive carbonyl species like MDA and 4-HNE. Metal chelators, particularly those targeting iron, play a pivotal role in regulating ferroptosis and limiting redox-active metal-catalysed ROS generation. Enhancing endogenous antioxidant capacity through glutathione (GSH) mimetics, prodrugs, and enhancers represents another critical approach to restore redox balance. Enzymatic ROS sources are targeted using inhibitors of xanthine oxidase and nitric oxide synthases, both of which contribute significantly to oxidative burden in pathological states. Mitochondrial-targeted antioxidants, such as MitoQ and tiron, have shown improved specificity and efficacy by directly protecting mitochondrial integrity, a major site of ROS generation and apoptosis signalling. Additionally, NADPH oxidase inhibitors help to reduce one of the primary sources of cellular ROS in inflammatory and cardiovascular diseases. Apoptosis inhibitors that modulate key regulators, including caspases and Bcl-2 family proteins, offer further protection by preventing programmed cell death in oxidative stress-affected cells. Finally, antioxidant enzyme mimetics such as those replicating the activity of superoxide dismutase (SOD), catalase, and glutathione peroxidase (GPx) represent a promising class of therapeutics designed to restore or enhance the body’s natural enzymatic defence systems. Collectively, these diverse yet interconnected approaches provide a multifaceted strategy for addressing oxidative stress and apoptosis across a broad range of clinical and experimental settings.</p> <p><strong>Conclusion: </strong>This extensive resource systematically organises and presents targeted compounds and modulators of oxidative and apoptotic signalling pathways, emphasising their therapeutic relevance across a spectrum of oxidative stress-related diseases and reproductive dysfunctions, including the oxidative challenges inherent to cryopreservation. By providing a detailed and structured analysis of pharmacological interventions ranging from antioxidant enzyme mimetics to apoptosis inhibitors and redox-active compound delivery systems, this work offers a scientifically rigorous reference for researchers and clinicians in pharmacology, toxicology, reproductive biology, and biomedical sciences. Its integrative approach supports both mechanistic understanding and the development of innovative therapeutic strategies aimed at redox modulation and cellular protection.</p> Abhishek Kumar Copyright (c) 2025 Author(s). The licensee is the publisher (BP International). 2025-07-17 2025-07-17 1 156 10.9734/bpi/mono/978-81-990309-9-2