Protective Effect of D-Limonene against Oxidative Stress-Induced Cell Damage in Human Lens Epithelial Cells via the p38 Pathway. 2016

Jie Bai, and Yi Zheng, and Gang Wang, and Ping Liu
Key Laboratory of Harbin Medical University Eye Center, Eye Hospital, First Affiliated Hospital, Harbin Medical University, Harbin 150001, China.

Oxidative stress, as mediated by ROS, is a significant factor in initiating the development of age-associated cataracts; D-limonene is a common natural terpene with powerful antioxidative properties which occurs naturally in a wide variety of living organisms. It has been shown to have antioxidant effect; we found that D-limonene can effectively prevent the oxidative damage caused by H2O2 and propose that the main mechanism underlying the inhibitory effects of D-limonene is the inhibition of HLECs apoptosis. In the present study, we used confocal-fluorescence microscopy, flow cytometry analysis, Hoechst staining, H2DCFDA staining, transmission electron microscopy, and immunoblot analysis; the results revealed that slightly higher concentrations of D-limonene (125-1800 μM) reduced the H2O2-induced ROS generation and inhibited the H2O2-induced caspase-3 and caspase-9 activation and decreased the Bcl-2/Bax ratio. Furthermore, it inhibited H2O2-induced p38 MAPK phosphorylation. Thus, we conclude that D-limonene could effectively protect HLECs from H2O2-induced oxidative stress and that its antioxidative effect is significant, thereby increasing the cell survival rate.

UI MeSH Term Description Entries
D007908 Lens, Crystalline A transparent, biconvex structure of the EYE, enclosed in a capsule and situated behind the IRIS and in front of the vitreous humor (VITREOUS BODY). It is slightly overlapped at its margin by the ciliary processes. Adaptation by the CILIARY BODY is crucial for OCULAR ACCOMMODATION. Eye Lens,Lens, Eye,Crystalline Lens
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D004847 Epithelial Cells Cells that line the inner and outer surfaces of the body by forming cellular layers (EPITHELIUM) or masses. Epithelial cells lining the SKIN; the MOUTH; the NOSE; and the ANAL CANAL derive from ectoderm; those lining the RESPIRATORY SYSTEM and the DIGESTIVE SYSTEM derive from endoderm; others (CARDIOVASCULAR SYSTEM and LYMPHATIC SYSTEM) derive from mesoderm. Epithelial cells can be classified mainly by cell shape and function into squamous, glandular and transitional epithelial cells. Adenomatous Epithelial Cells,Columnar Glandular Epithelial Cells,Cuboidal Glandular Epithelial Cells,Glandular Epithelial Cells,Squamous Cells,Squamous Epithelial Cells,Transitional Epithelial Cells,Adenomatous Epithelial Cell,Cell, Adenomatous Epithelial,Cell, Epithelial,Cell, Glandular Epithelial,Cell, Squamous,Cell, Squamous Epithelial,Cell, Transitional Epithelial,Cells, Adenomatous Epithelial,Cells, Epithelial,Cells, Glandular Epithelial,Cells, Squamous,Cells, Squamous Epithelial,Cells, Transitional Epithelial,Epithelial Cell,Epithelial Cell, Adenomatous,Epithelial Cell, Glandular,Epithelial Cell, Squamous,Epithelial Cell, Transitional,Epithelial Cells, Adenomatous,Epithelial Cells, Glandular,Epithelial Cells, Squamous,Epithelial Cells, Transitional,Glandular Epithelial Cell,Squamous Cell,Squamous Epithelial Cell,Transitional Epithelial Cell
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000077222 Limonene A naturally-occurring class of MONOTERPENES which occur as a clear colorless liquid at room temperature. Limonene is the major component in the oil of oranges which has many uses, including as flavor and fragrance. It is recognized as safe in food by the Food and Drug Administration (FDA). (+)-(R)-4-isopropenyl-1-methylcyclohexene,(+)-Limonene,(-)-Limonene,(4R)-1-methyl-4-(1-methylethenyl)cyclohexene,(4S)-1-methyl-4-isopropenylcyclohex-1-ene,(D)-Limonene,(R)-(+)-Limonene,(R)-4-isopropenyl-1-methylcyclohexene,1-Methyl-4-(1-methylethenyl)cyclohexene,4-Mentha-1,8-diene,AISA 5203-L (+)Limonene,Cyclohexene, 1-methyl-4-(1-methylethenyl)-, (4R)-,Dipentene,Limonene, (+)-,Limonene, (+-)-,Limonene, (+-)-isomer,Limonene, (R)-isomer,Limonene, (S)-isomer,d-Limonene,4 Mentha 1,8 diene,d Limonene
D013729 Terpenes A class of compounds composed of repeating 5-carbon units of HEMITERPENES. Isoprenoid,Terpene,Terpenoid,Isoprenoids,Terpenoids
D048051 p38 Mitogen-Activated Protein Kinases A mitogen-activated protein kinase subfamily that regulates a variety of cellular processes including CELL GROWTH PROCESSES; CELL DIFFERENTIATION; APOPTOSIS; and cellular responses to INFLAMMATION. The P38 MAP kinases are regulated by CYTOKINE RECEPTORS and can be activated in response to bacterial pathogens. Mitogen-Activated Protein Kinase p38,p38 Mitogen-Activated Protein Kinase,p38 MAP Kinase,p38 MAPK,p38 Protein Kinase,p38 SAPK,MAP Kinase, p38,MAPK, p38,Mitogen Activated Protein Kinase p38,Protein Kinase, p38,p38 Mitogen Activated Protein Kinase,p38 Mitogen Activated Protein Kinases
D053138 Cyclohexenes Six-carbon alicyclic hydrocarbons which contain one or more double bonds in the ring. The cyclohexadienes are not aromatic, in contrast to BENZOQUINONES which are sometimes called 2,5-cyclohexadiene-1,4-diones. Cyclohexadienes
D018384 Oxidative Stress A disturbance in the prooxidant-antioxidant balance in favor of the former, leading to potential damage. Indicators of oxidative stress include damaged DNA bases, protein oxidation products, and lipid peroxidation products (Sies, Oxidative Stress, 1991, pxv-xvi). Anti-oxidative Stress,Antioxidative Stress,DNA Oxidative Damage,Nitro-Oxidative Stress,Oxidative Cleavage,Oxidative DNA Damage,Oxidative Damage,Oxidative Injury,Oxidative Nitrative Stress,Oxidative Stress Injury,Oxidative and Nitrosative Stress,Stress, Oxidative,Anti oxidative Stress,Anti-oxidative Stresses,Antioxidative Stresses,Cleavage, Oxidative,DNA Damage, Oxidative,DNA Oxidative Damages,Damage, DNA Oxidative,Damage, Oxidative,Damage, Oxidative DNA,Injury, Oxidative,Injury, Oxidative Stress,Nitrative Stress, Oxidative,Nitro Oxidative Stress,Nitro-Oxidative Stresses,Oxidative Cleavages,Oxidative DNA Damages,Oxidative Damage, DNA,Oxidative Damages,Oxidative Injuries,Oxidative Nitrative Stresses,Oxidative Stress Injuries,Oxidative Stresses,Stress Injury, Oxidative,Stress, Anti-oxidative,Stress, Antioxidative,Stress, Nitro-Oxidative,Stress, Oxidative Nitrative,Stresses, Nitro-Oxidative
D020935 MAP Kinase Signaling System An intracellular signaling system involving the mitogen-activated protein kinase cascades (three-membered protein kinase cascades). Various upstream activators, which act in response to extracellular stimuli, trigger the cascades by activating the first member of a cascade, MAP KINASE KINASE KINASES; (MAPKKKs). Activated MAPKKKs phosphorylate MITOGEN-ACTIVATED PROTEIN KINASE KINASES which in turn phosphorylate the MITOGEN-ACTIVATED PROTEIN KINASES; (MAPKs). The MAPKs then act on various downstream targets to affect gene expression. In mammals, there are several distinct MAP kinase pathways including the ERK (extracellular signal-regulated kinase) pathway, the SAPK/JNK (stress-activated protein kinase/c-jun kinase) pathway, and the p38 kinase pathway. There is some sharing of components among the pathways depending on which stimulus originates activation of the cascade. MAP Kinase Cascade,MAP Kinase Module,MAP Kinase Signaling Cascade,MAP Kinase Signaling Pathway,MAP Kinase Signaling Pathways,ERK Pathway,ERK Signal Tranduction Pathway,ERK1 and ERK2 Pathway,ERK1-2 Pathway,JNK Pathway,JNK Signaling Pathway,MAP Kinase Modules,MAP Kinase Signaling Cascades,MEK-ERK Pathway,p38 Kinase Pathway,p38 Kinase Signaling Pathway,Cascade, MAP Kinase,ERK Pathways,ERK1 2 Pathway,ERK1-2 Pathways,JNK Pathways,JNK Signaling Pathways,Kinase Cascade, MAP,Kinase Pathway, p38,Kinase Pathways, p38,MAP Kinase Cascades,MEK ERK Pathway,MEK-ERK Pathways,Module, MAP Kinase,Pathway, ERK,Pathway, ERK1-2,Pathway, JNK,Pathway, JNK Signaling,Pathway, MEK-ERK,Pathway, p38 Kinase,Pathways, ERK,Pathways, ERK1-2,Pathways, JNK,Pathways, JNK Signaling,Pathways, MEK-ERK,Pathways, p38 Kinase,Signaling Pathway, JNK,Signaling Pathways, JNK,p38 Kinase Pathways

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