No abstract available.
Apoptosis*

No abstract available.
Apoptosis

Cell death occurs in various tissues and organs in the body. It is a physiological or pathological process that has different effects. It is of great significance in maintaining the morphological function of cells and clearing abnormal cells. Pyroptosis, apoptosis, and necrosis are all modes of cell death that have been studied extensively by many experts and scholars, including studies on their effects on the liver, kidney, the heart, other organs, and even the whole body. The heart, as the most important organ of the body, should be a particular focus. This review summarizes the mechanisms underlying the various cell death modes and the relationship between the various mechanisms and heart diseases. The current research status for heart therapy is discussed from the perspective of pathogenesis.
Apoptosis ; Autophagy ; Cardiovascular Diseases ; Humans ; Necrosis ; Pyroptosis

Inflammatory injury of the intestine is often accompanied by symptoms such as damage to intestinal mucosa, increased intestinal permeability, and intestinal motility dysfunction. Inflammatory factors spread throughout the body via blood circulation, and can cause multi-organ failure. Pyroptosis is a newly discovered way of programmed cell death, which is mainly characterized by the formation of plasma membrane vesicles, cell swelling until the rupture of the cell membrane, and the release of cell contents, thereby activating a drastic inflammatory response and expanding the inflammatory response cascade. Pyroptosis is widely involved in the occurrence of diseases, and the underlying mechanisms for inflammation are still a hot spot of current research. The caspase-1 mediated canonical inflammasome pathway of pyroptosis and caspase-4/5/8/11-mediated non-canonical inflammasome pathway are closely related to the occurrence and development of intestinal inflammation. Therefore, investigation of the signaling pathways and molecular mechanisms of pyroptosis in intestinal injury in sepsis, inflammatory bowel diseases, infectious enteristic, and intestinal tumor is of great significance for the prevention and treatment of intestinal inflammatory injury.
Humans ; Pyroptosis ; Inflammasomes/metabolism* ; Apoptosis ; Caspase 1 ; Inflammation

Apoptosis and autophagy of follicular granulosa cells play an important regulatory role in the process of ovarian follicular atresia in animals. Recent studies have shown that ferroptosis and pyroptosis are also involved in the process of ovarian follicular atresia. Ferroptosis is a form of cell death caused by iron-dependent lipid peroxidation and reactive oxygen species (ROS) accumulation. Studies have confirmed that autophagy- and apoptosis-mediated follicular atresia also have typical characteristics of ferroptosis. Pyroptosis is a pro-inflammatory cell death dependent on Gasdermin protein, which can regulate ovarian reproductive performance by regulating follicular granulosa cells. This article reviews the roles and mechanisms of several types of programmed cell death independently or interactively regulating follicular atresia, in order to expand the theoretical research on follicular atresia mechanism and provide the theoretical reference for the mechanism of programmed cell death-induced follicular atresia.
Female ; Animals ; Follicular Atresia ; Apoptosis ; Cell Death ; Ferroptosis ; Pyroptosis

OBJECTIVE: To determine whether salvianolic acid B (Sal B) exerts protective effects on diabetic peripheral neuropathy by attenuating apoptosis and pyroptosis. METHODS: RSC96 cells were primarily cultured with DMEM (5.6 mmol/L glucose), hyperglycemia (HG, 125 mmol/L glucose) and Sal B (0.1, 1, and 10 µ mol/L). Cells proliferation was measured by 3-(4, 5-cimethylthiazol-2-yl)-2, 5-dilphenyltetrazolium bromide assay. Reactive oxygen species (ROS) generation and apoptosis rate were detected by flow cytometry analysis. Western blot was performed to analyze the expressions of poly ADP-ribose polymerase (PARP), cleaved-caspase 3, cleaved-caspase 9, Bcl-2, Bax, NLRP3, ASC, and interleukin (IL)-1β. RESULTS: Treatment with HG at a concentration of 125 mmol/L attenuated cellular proliferation, while Sal B alleviated this injury (P<0.05). In addition, Sal B inhibited HG-induced ROS production and apoptosis rate (P<0.05). Furthermore, treatment with Sal B down-regulated HG-induced PARP, cleaved-caspase 3, cleaved-caspase 9, Bax, NLRP3, ASC, and IL-1β expression, but mitigated HG-mediated down-regulation of Bcl-2 expression (P<0.05). CONCLUSION Sal B may protect RSC96 cells against HG-induced cellular injury via the inhibition of apoptosis and pyroptosis activated by ROS.
Apoptosis ; Benzofurans/pharmacology* ; Oxidative Stress ; Pyroptosis ; Reactive Oxygen Species/metabolism*

Lung cancer remains the primary cause of cancer-related death in the world, and the number of cases continues to increase. Like any other human cancer, the development of lung cancer is associated with the activation of oncogenes or inactivation of tumor suppressor genes. Phosphatase and tensin homolog, deleted on chromosome ten (PTEN), is a part of a complex signaling system that affects a variety of important cell functions. PTEN opposes the action of phosphatidylinositol 3-kinase (PI3-kinase) by dephosphorylating the signaling lipid phosphatidylinositol 3, 4, 5-triphosphate (PIP3). In addition, it displays weak tyrosine phosphatase activity, which may down modulate the signaling pathways involving focal adhesion kinase (FAK) or Shc. Functions for PTEN have been identified in the regulation of many normal cell processes, including growth, adhesion, migration, invasion and apoptosis. PTEN appears to play particularly important roles in regulating anoikis (apoptosis of cells after loss of contact with extracellular matrix) and cell migration. Many studies have suggested that the loss of PTEN expression occurs commonly in primary lung cancers and correlates with the histological type. Regulation of PTEN expression may provide a new preventive and therapeutic modality in primary lung cancer. However, there is, in our opinion, a need for further study of this gene
Anoikis ; Apoptosis ; Cell Movement ; Focal Adhesion Protein-Tyrosine Kinases ; Genes, Tumor Suppressor ; Humans ; Lung Neoplasms* ; Lung* ; Oncogenes ; Phosphatidylinositol 3-Kinase ; Phosphatidylinositols ; Signal Transduction ; Tyrosine

No abstract available.
Apoptosis* ; Lung*

No abstract available.
Apoptosis* ; Hyperplasia*

No abstract available.
Apoptosis* ; Diphosphonates*