Abstract：
:BACKGROUND Lead (Pb) is a widely used metal in modern industry and is regarded as a health hazard. Although lead-induced genotoxicity has been confirmed, the direct evidence that lead induces genotoxicity in human cells and its related mechanisms has not been fully elucidated. In this study, for the first time, we evaluated the genotoxicity induced by lead in human lymphoblastoid TK6 cells. MATERIAL AND METHODS The TK6 cells were incubated with various concentrations of Pb(Ac)2 for 6 h, 12 h, or 24 h. Cell viability was detected by CCK8 assay. Various biochemical markers were assessed by specific kits. Immunofluorescence assay was used to detect g-H2AX foci formation. The promoter methylation was assessed by methylation-specific PCR. The protein levels were determined by Western blot assay. RESULTS The results showed that after exposure to lead, cell viability was obviously decreased and γ-H2AX foci formation was significantly enhanced in TK6 cells. Moreover, the levels of 8-OHdG, ROS, MDA, and GSSG were increased, while the GSH level and SOD activity were decreased in lead-treated TK6 cells. The activation of the Nrf2-ARE signaling pathway was involved in lead-induced oxidative stress in TK6 cells. Finally, the expressions of DNA repair genes XRCC1, hOGG-1, BRCA1, and XPD were inhibited via enhancing their promoter methylation in TK6 cells after exposure to lead. CONCLUSIONS Taken together, our study provides the first published evidence that lead exposure results in DNA damage via promoting oxidative stress and the promoter methylation of DNA repair genes in human lymphoblastoid TK6 cells.
journal_name
Med Sci Monitjournal_title
Medical science monitor : international medical journal of experimental and clinical researchauthors
Liu X,Wu J,Shi W,Shi W,Liu H,Wu Xdoi
10.12659/MSM.908425subject
Has Abstractpub_date
2018-06-22 00:00:00pages
4295-4304eissn
1234-1010issn
1643-3750pii
908425journal_volume
24pub_type
杂志文章abstract：BACKGROUND:The goal was to ascertain the prevalence of SLE in the population over 18 years of age in the Scandicci-Le Signe area of Florence, Italy, based on the records of general practitioners (GPs). MATERIAL/METHODS:Twenty GPs screened 32,521 patients by administering the Lupus Screening Questionnaire (LQS) and fou...
journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：
更新日期：2005-09-01 00:00:00
abstract：:BACKGROUND MicroRNA-365 (miR-365) is involved in the development of a variety of cancers. However, it remains largely unknown if and how miRNAs-365 plays a role in melanoma development. MATERIAL AND METHODS In this study, we overexpressed miR-365 in melanoma cell lines A375 and A2058, via transfection of miR-365 mimic...
journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：10.12659/MSM.909633
更新日期：2018-06-02 00:00:00
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journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：10.12659/MSM.916948
更新日期：2019-09-27 00:00:00
abstract：:BACKGROUND Diabetic nephropathy (DN) is a potentially fatal complication of diabetes mellitus. While lifestyle changes can reduce diabetes risk, it is unclear whether improved lifestyle can slow or reverse DN progression. This study evaluated whether an intensive lifestyle intervention (IL-I) targeting weight loss and...
journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章,随机对照试验
doi：10.12659/MSM.913512
更新日期：2019-04-25 00:00:00
abstract：BACKGROUND:The fungus C. albicans is among the leading agents causing death in immunocompromised patients. Most hospitals rely on conventional morphological techniques such as the germ-tube assay and the API system for correct identification. This technique is subjective and hence error prone. Recently, more and more m...
journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：
更新日期：2007-05-01 00:00:00
abstract：:BACKGROUND Endometrial carcinoma (EC) is a type of female reproductive malignant tumor, the incidence of which is generally 20~30%. Multiple factors and genes are involved in the regulation of EC occurrence and progression. This study aimed to measure the expressions of MACC1 and c-Myc in EC patients to analyze their ...
journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：10.12659/MSM.908812
更新日期：2018-07-09 00:00:00
abstract：BACKGROUND:The establishment of Helicobacter pylori in the stomach and duodenum is associated with gastritis, peptic ulcers, and gastric cancer. Application of suitable methods, including molecular techniques, for an accurate detection of H. pylori can lead to the administration of appropriate drugs and successful ther...
journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：
更新日期：2008-09-01 00:00:00
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journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：10.12659/MSM.895543
更新日期：2015-09-26 00:00:00
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journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：10.12659/msm.905774
更新日期：2018-01-17 00:00:00
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journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：
更新日期：2002-03-01 00:00:00
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journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 临床试验,杂志文章,随机对照试验
doi：
更新日期：2005-08-01 00:00:00
abstract：:BACKGROUND Hypoxia induces cell apoptosis in the uterosacral ligaments of patients with pelvic organ prolapse by upregulation of hypoxia-inducible factor-1α (HIF-1α). This study aimed to investigate the effects of HIF-1α on human uterosacral ligament fibroblasts (hUSLFs) following treatment with the chemical inducer o...
journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：10.12659/MSM.913384
更新日期：2018-12-03 00:00:00
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journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 临床试验,杂志文章
doi：10.12659/msm.883747
更新日期：2013-01-24 00:00:00
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journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：
更新日期：2007-07-01 00:00:00
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journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：
更新日期：2002-12-01 00:00:00
abstract：BACKGROUND:Bifenthrin is a synthetic pyrethroid insecticide derivative of naturally occurring pyrethrins from chrysanthemum flowers. Bifenthrin is considered relatively safe and therefore incorporated as the active ingredient in preparations sold over the counter for household use. Recent studies have raised concern th...
journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：
更新日期：2006-05-01 00:00:00
abstract：:BACKGROUND Catheter radiofrequency ablation for typical atrial flutter is considered to be safe and effective. However, atrial fibrillation (AF) following cavotricuspid isthmus ablation for atrial flutter has been reported in patients without a previous history of AF, which has implications for the decision to use ora...
journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：10.12659/MSM.912918
更新日期：2019-05-05 00:00:00
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journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：10.12659/MSM.913700
更新日期：2019-04-01 00:00:00
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journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：10.12659/MSM.924787
更新日期：2020-08-03 00:00:00
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journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：10.12659/MSM.914987
更新日期：2019-06-17 00:00:00
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journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：10.12659/MSM.910279
更新日期：2018-07-15 00:00:00
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journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：10.12659/MSM.914881
更新日期：2019-07-15 00:00:00
abstract：BACKGROUND:This study was designed to clarify the significance of washout rate (WR) determined from 99mTc-sestamibi myocardial scintigraphic images and the levels of cardiac enzymes in patients with acute myocardial infarction (AMI) after percutaneous coronary intervention (PCI). MATERIAL/METHODS:A total of 56 consecu...
journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：10.12659/msm.881447
更新日期：2011-02-25 00:00:00
abstract：BACKGROUND:Recombinant human activated protein C (drotrecogin alfa [activated]--DAA) demonstrated in Phase III controlled clinical studies significant reduction of mortality in patients with severe sepsis and high risk of death. The aim of the study was to assess the therapeutic efficacy of DAA in patients included in ...
journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：
更新日期：2006-03-01 00:00:00
abstract：:BACKGROUND Predicting the occurrence of severe postreperfusion syndrome (PRS) is clinically challenging. We investigated whether the flushed fluid potassium concentration (FFK) was associated with severe PRS in deceased donor liver transplantation (DDLT). MATERIAL AND METHODS Forty adult DDLT recipients were enrolled ...
journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：10.12659/msm.907132
更新日期：2017-10-29 00:00:00
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journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：10.12659/MSM.928403
更新日期：2020-12-31 00:00:00
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journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：10.12659/MSM.915375
更新日期：2019-08-04 00:00:00
abstract：:BACKGROUND The therapeutic potential of endothelial colony-forming cells (ECFCs) may be impaired in an ischemic environment. Direct injection of ECFCs is not an effective method of rescuing the ischemic heart, but exosomes derived from these cells may be a promising therapeutic tool. However, exosomes produced under n...
journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：10.12659/MSM.911306
更新日期：2018-09-05 00:00:00
abstract：BACKGROUND:Gadolinium chelates (GCs) have been traditionally considered as non-nephrotoxic magnetic resonance imaging (MRI) contrast materials. However, it has been suggested in some recent articles that GCs may have a nephrotoxic potential, but most of these reports are retrospective. However, the evaluated contrast a...
journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 临床试验,杂志文章
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更新日期：2013-11-06 00:00:00
abstract：BACKGROUND:Arm wrestling has recently become one of the most popular sports among young people, mainly due to its simplicity and spectacularity. Yet, unfortunately it is also injury prone. The aim of the study was to perform a biomechanical analysis of the forces which act during arm wrestling, as well as to explain th...
journal_title：Medical science monitor : international medical journal of experimental and clinical research
pub_type： 杂志文章
doi：10.12659/msm.882736
更新日期：2012-05-01 00:00:00
