APOPTOSIS AND NECROSIS: DIFFERENCES, MECHANISMS, AND THEIR SIGNIFICANCE IN MEDICINE
Keywords:
Apoptosis; Necrosis; Cell death; Programmed cell death; Inflammation; Molecular mechanisms; Clinical significanceAbstract
Cell death is a fundamental biological process essential for the maintenance of tissue homeostasis and normal physiological function. Among the various forms of cell death, apoptosis and necrosis represent two major mechanisms with distinct biological characteristics and clinical implications. Apoptosis is a genetically programmed, energy-dependent process that enables the orderly elimination of damaged or unnecessary cells without inducing inflammation, whereas necrosis is an uncontrolled and pathological form of cell death resulting from severe cellular injury and accompanied by inflammatory responses.
The present study provides a comprehensive analysis of the morphological, molecular, and functional differences between apoptosis and necrosis, as well as their significance in medical practice. A systematic review of scientific literature was conducted to evaluate regulatory pathways, cellular alterations, diagnostic approaches, and clinical relevance associated with both forms of cell death. Comparative assessment revealed substantial differences in membrane integrity, energy dependence, inflammatory involvement, and biological outcomes.
The findings emphasize the importance of accurately distinguishing between apoptotic and necrotic processes in diagnostic evaluation and therapeutic decision-making. Improved understanding of cell death mechanisms contributes to the development of targeted treatment strategies in oncology, neurodegenerative diseases, ischemic disorders, and inflammatory conditions. Overall, the study highlights the critical role of regulated and pathological cell death in hea lth and disease, underscoring their relevance in modern molecular and clinical medicine.
References
Kerr JF, Wyllie AH, Currie AR. Apoptosis: a basic biological phenomenon with wide-ranging implications in tissue kinetics. Br J Cancer. 1972;26(4):239–257.
Elmore S. Apoptosis: a review of programmed cell death. Toxicol Pathol. 2007;35(4):495–516.
Majno G, Joris I. Apoptosis, oncosis, and necrosis: an overview of cell death. Am J Pathol. 1995;146(1):3–15.
Green DR, Reed JC. Mitochondria and apoptosis. Science. 1998;281(5381):1309–1312.
Fulda S, Debatin KM. Extrinsic versus intrinsic apoptosis pathways in anticancer chemotherapy. Oncogene. 2006;25(34):4798–4811.
Thompson CB. Apoptosis in the pathogenesis and treatment of disease. Science. 1995;267(5203):1456–1462.
Hotchkiss RS, Strasser A, McDunn JE, Swanson PE. Cell death. N Engl J Med. 2009;361(16):1570–1583.
Galluzzi L, Bravo-San Pedro JM, Vitale I, et al. Essential versus accessory aspects of cell death. Cell Death Differ. 2015;22(1):58–73.
Kroemer G, Galluzzi L, Vandenabeele P, et al. Classification of cell death: recommendations of the Nomenclature Committee on Cell Death. Cell Death Differ. 2009;16(1):3–11.
Galluzzi L, Vitale I, Abrams JM, et al. Molecular definitions of cell death subroutines. Cell Death Differ. 2012;19(1):107–120.
Lockshin RA, Zakeri Z. Programmed cell death and apoptosis: origins of the theory. Nat Rev Mol Cell Biol. 2001;2(7):545–550.
Fink SL, Cookson BT. Apoptosis, pyroptosis, and necrosis: mechanistic description of dead and dying eukaryotic cells. Infect Immun. 2005;73(4):1907–1916.
Yuan J, Yankner BA. Apoptosis in the nervous system. Nature. 2000;407(6805):802–809.
Wyllie AH. Glucocorticoid-induced thymocyte apoptosis is associated with endogenous endonuclease activation. Nature. 1980;284(5756):555–556.
Vermes I, Haanen C, Steffens-Nakken H, Reutelingsperger C. A novel assay for apoptosis: flow cytometric detection of phosphatidylserine expression. J Immunol Methods. 1995;184(1):39–51.
Gavrieli Y, Sherman Y, Ben-Sasson SA. Identification of programmed cell death in situ via specific labeling of nuclear DNA fragmentation. J Cell Biol. 1992;119(3):493–501.
Kroemer G, Martin SJ. Caspase-independent cell death. Nat Med. 2005;11(7):725–730.
Proskuryakov SY, Gabai VL. Mechanisms of tumor cell necrosis. Curr Pharm Des. 2010;16(1):56–68.
Rock KL, Kono H. The inflammatory response to cell death. Annu Rev Pathol. 2008;3:99–126.
Häcker G. The morphology of apoptosis. Cell Tissue Res. 2000;301(1):5–17.
Trump BF, Berezesky IK. Calcium-mediated cell injury and cell death. FASEB J. 1995;9(2):219–228.
Leist M, Nicotera P. The shape of cell death. Biochem Biophys Res Commun. 1997;236(1):1–9.
Nicotera P, Leist M, Manzo L. Neuronal cell death: a demise with different shapes. Trends Pharmacol Sci. 1999;20(2):46–51.
Kroemer G, El-Deiry WS, Golstein P, et al. Classification of cell death: recommendations of the NCCD. Cell Death Differ. 2005;12(Suppl 2):1463–1467.
Vermes I, Reutelingsperger C. Flow cytometry of apoptotic cell death. Methods. 2000;21(3):271–277.
Hanahan D, Weinberg RA. Hallmarks of cancer: the next generation. Cell. 2011;144(5):646–674.
Braunwald E. Myocardial ischemia and necrosis. Circulation. 1997;96(2):497–505.