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Liu PH, Hao JD, Li WY, Tian J, Zhao J, Zeng YM, Dong GQ. Congenital cytomegalovirus infection and the risk of hearing loss in childhood: A PRISMA-compliant meta-analysis. Medicine (Baltimore) 2021; 100:e27057. [PMID: 34516495 PMCID: PMC8428733 DOI: 10.1097/md.0000000000027057] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 08/06/2021] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Congenital cytomegalovirus (cCMV) infection is the most common cause of childhood hearing loss (HL), although the strength of this association remains limited and inconclusive. Thus, the purpose of this study was to summarize evidence regarding the strength of the relationship between cCMV and childhood HL and to determine whether this relationship differs according to patient characteristics. METHODS The PubMed, EmBase, and Cochrane Library databases were searched for studies evaluating the relationship between cCMV and HL from inception to September 2019. Odds ratios (ORs) and corresponding 95% confidence intervals (CIs) were used to calculate the investigated outcomes in a random-effects model. Sensitivity, subgroup, and publication bias analyses were also performed. RESULTS A total of 15 studies involving 235,026 children met the inclusion criteria and were included in the final analysis. The summary results indicated that cCMV infection was associated with an increased risk of HL (odds ratio [OR]: 8.45; 95% confidence interval [CI]: 3.95-18.10; P < .001), irrespective of whether studies reported sensorineural HL (OR: 5.42; 95% CI: 1.98-14.88; P = .001), or did not evaluate HL types among their patients (OR: 11.04; 95% CI: 3.91-31.16; P < .001). However, in studies conducted in the United States (P < 0.001) and published in or after 2000 (P = 0.026), the study populations included <60% males (P < 0.001). Moreover, studies of high quality (P < .001) demonstrated a significantly greater risk of HL with cCMV infection than that in the corresponding subgroups. CONCLUSIONS The study results suggest that cCMV infection increases the risk of HL. Further studies are required to investigate the association of cCMV infection with the risk of specific subtypes of HL.
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Zeng QW, Gao PW, Xu YF, Dong GQ, Chen MM, Zhao JW, Jin GL. Laboratory Research and Evaluation on Design and Application Performance of High-Performance Cold-Mix Resin. Materials (Basel) 2021; 14:ma14174828. [PMID: 34500916 PMCID: PMC8432665 DOI: 10.3390/ma14174828] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 07/27/2021] [Accepted: 08/23/2021] [Indexed: 11/24/2022]
Abstract
To improve the safety of orthotropic steel bridge decks and the construction efficiency of bridge deck pavement by enhancing the performance of pavement materials, a new-generation, high-performance cold-mix resin was prepared by carrying out the combination of micro-characteristic analysis and performance test. Meanwhile, the pavement performance and fatigue performance of high-performance cold-mix resin mixtures and hot-mix epoxy saphalt mixtures as a control group were studied experimentally. The results show that different kinds of epoxy resins show bisphenol structure in essence. The curing exothermic peak temperature of the cold-mix resin increases with the heating rate. Both the specific heat capacity (△CP) of cold-mix resin and cold-mix resin asphalts exhibit a sudden change between −20 °C and 40 °C. In resin asphalt mixtures, cold-mix resin forms the network structure skeleton whereas the asphalt distributed in the form of tiny particles. The dosage of respective component has a significant effect on the tensile strength and elongation at break of cold-mix resin. Compared with hot-mix epoxy asphalt mixtures, cold-mix resin mixtures exhibit comparable water stability and high and low-temperature performance, as well as greater fatigue life.
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Affiliation(s)
- Qing-Wei Zeng
- College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China; (Q.-W.Z.); (G.-Q.D.)
| | - Pei-Wei Gao
- College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China; (Q.-W.Z.); (G.-Q.D.)
- Correspondence:
| | - Yang-Fu Xu
- Jiangxi Changtong Highway Co., Ltd., Nanchang 330025, China;
| | - Guo-Qing Dong
- College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China; (Q.-W.Z.); (G.-Q.D.)
| | - Man-Man Chen
- Jiangsu Sinoroad Engineering Technology Research Institute, Nanjing 210000, China; (M.-M.C.); (G.-L.J.)
| | - Jing-Wei Zhao
- School of Transportation, Southeast University, Nanjing 211189, China;
| | - Guang-Lai Jin
- Jiangsu Sinoroad Engineering Technology Research Institute, Nanjing 210000, China; (M.-M.C.); (G.-L.J.)
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Chen TW, Wu J, Dong GQ. Mechanical Properties and Uniaxial Compression Stress-Strain Relation of Recycled Coarse Aggregate Concrete after Carbonation. Materials (Basel) 2021; 14:2215. [PMID: 33925805 PMCID: PMC8123438 DOI: 10.3390/ma14092215] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 04/11/2021] [Accepted: 04/22/2021] [Indexed: 11/24/2022]
Abstract
The application of recycled coarse aggregate (RCA) made from waste concrete to replace natural coarse aggregate (NCA) in concrete structures can essentially reduce the excessive consumption of natural resources and environmental pollution. Similar to normal concrete structures, recycled concrete structures would also suffer from the damage of carbonation, which leads to the deterioration of durability and the reduction of service life. This paper presents the experimental results of the cubic compressive strength, the static elastic modulus and the stress-strain relation of recycled coarse aggregate concrete (RAC) after carbonation. The results show that the cubic compressive strength and the static elastic modulus of carbonated RAC gradually increased with the carbonation depth. The uncarbonated and fully carbonated RAC show smaller static elastic modulus than natural aggregate concrete (NAC). As the carbonation depth increased, the peak stress increased, while the peak strain decreased and the descending part of the curves gradually became steeper. As the content of RCA became larger, the peak stress decreased, while the peak strain increased and the descending part of the curves gradually became steeper. An equation for stress-strain curves of RAC after carbonation was proposed, and it was in good agreement with the test results.
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Affiliation(s)
| | - Jin Wu
- Department of Civil Engineering and Airport Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China; (T.-W.C.); (G.-Q.D.)
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Zhang JY, Peng H, Gong ST, Zeng YM, Huang M, Liu PH, Wang LT, Dong GQ. The role of peroxisome proliferator-activated receptor gamma and adiponectin in children with Kawasaki disease. J Int Med Res 2021; 49:300060521994925. [PMID: 33729859 PMCID: PMC7975572 DOI: 10.1177/0300060521994925] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVE To investigate the relationship between peroxisome proliferator-activated receptor gamma (PPARγ) mRNA, serum adiponectin (ADP) and lipids in paediatric patients with Kawasaki disease (KD). METHODS This prospective study enrolled paediatric patients with KD and grouped them according to the presence or absence of coronary artery lesions (CAL). A group of healthy age-matched children were recruited as the control group. The levels of PPARγ mRNA, serum ADP and lipids were compared between the groups. Receiver operating characteristic (ROC) curve analysis was undertaken to determine if the PPARγ mRNA level could be used as a predictive biomarker of CAL prognosis. RESULTS The study enrolled 42 patients with KD (18 with CAL [CAL group] and 24 without CAL [NCAL group]) and 20 age-matched controls. PPARγ mRNA levels in patients with KD were significantly higher than those in the controls; but significantly lower in the CAL group than the NCAL group. ROC curve analysis demonstrated that the PPARγ mRNA level provided good predictive accuracy for the prognosis of CAL. There was no association between PPARγ, ADP and lipid levels. CONCLUSION There was dyslipidaemia in children with KD, but there was no correlation with PPARγ and ADP. PPARγ may be a predictor of CAL in patients with KD with good predictive accuracy.
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Affiliation(s)
- Ji-Yong Zhang
- Department of Paediatrics, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China.,Department of Paediatrics, Affiliated Shenzhen Maternity and Child Healthcare Hospital, Southern Medical University, Shenzhen, Guangdong Province, China
| | - Hong Peng
- Department of Infectious Disease, Shenzhen People's Hospital, Shenzhen, Guangdong Province, China
| | - Si-Tang Gong
- Department of Paediatrics, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
| | - Yong-Mei Zeng
- Department of Paediatrics, Affiliated Shenzhen Maternity and Child Healthcare Hospital, Southern Medical University, Shenzhen, Guangdong Province, China
| | - Miao Huang
- Department of Paediatrics, Affiliated Shenzhen Maternity and Child Healthcare Hospital, Southern Medical University, Shenzhen, Guangdong Province, China
| | - Pei-Hui Liu
- Department of Paediatrics, Affiliated Shenzhen Maternity and Child Healthcare Hospital, Southern Medical University, Shenzhen, Guangdong Province, China
| | - Li-Ting Wang
- Department of Paediatrics, Affiliated Shenzhen Maternity and Child Healthcare Hospital, Southern Medical University, Shenzhen, Guangdong Province, China
| | - Guo-Qing Dong
- Department of Paediatrics, Affiliated Shenzhen Maternity and Child Healthcare Hospital, Southern Medical University, Shenzhen, Guangdong Province, China
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Liu XF, Wu WQ, Dong GQ, Xiao TT, Liu Y, Zhou YZ, Li YD, Lin JT, Chen FJ, Zhang XZ. [Laparoscopic management of persistent Müllerian duct syndrome: A case report and pedigree investigation]. Zhonghua Nan Ke Xue 2021; 27:231-235. [PMID: 34914305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
OBJECTIVE To investigate the clinical characteristics, diagnosis, treatment and etiology of persistent Müllerian duct syndrome (PMDS). METHODS A 3-year-old boy was diagnosed with PMDS according to the clinical manifestations and the results of ultrasonography, laboratory examinations and earlier surgical examination. We performed genetic tests for the patient and his family members, removed the infantile uterus by laparoscopic wedge hysterectomy, biopsied and descended the bilateral testes, and ligated the bilateral internal rings, followed by a retrospective analysis and review of relevant literature. RESULTS The operation was successful. Gonad biopsy revealed testis tissue, and PMDS was confirmed by intraoperative findings and related examinations. Good bilateral testicular blood supply was found during the 6-month follow-up after surgery. Medical exome sequencing showed the AMHR2 gene c.1499G > A (p.Cys500Tyr) mutant homozygote (A/A) in the patient and his sister and mutant heterozygote (G/A) in his parents. CONCLUSIONS Laparoscopy is definitely effective for the treatment of PMDS. In surgery, the infantile uterus should be removed in case of good blood supply to the testis, and so were the bilateral testes if they cannot be descended. The homozygous mutation in the AMHR2 gene c. 1499G > A (p. Cys500Tyr) can lead to male PMDS. Pedigree investigation may provide some evidence for possible fertility in PMDS patients.
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Affiliation(s)
| | | | - Guo-Qing Dong
- Department of Pediatrics, Shenzhen Maternity and Child Health Care Hospital Affiliated to Southern Medical University, Shenzhen, Guangdong 518028, China
| | | | - Yang Liu
- Research Center of Medical Heredity
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Deng J, Peng ZY, Wen ZX, Dong GQ, Xie MX, Xu GG. High COVID-19 mortality in the UK: lessons to be learnt from Hubei province: are under-detected 'silent hypoxia' and subsequently low admission rate to blame? QJM 2020; 113:854-855. [PMID: 32866270 PMCID: PMC7499689 DOI: 10.1093/qjmed/hcaa262] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- J Deng
- Barts Heart Centre and University College London, UK
- Corresponding Author
| | - Z Y Peng
- Zhongnan Hospital, Wuhan University, Hubei, China
| | - Z X Wen
- TongJi Hospital, TongJi Medical College [TJMC], Huazhong University of Science & Technology [HUST], Wuhan, China
| | - G Q Dong
- Shenzhen Maternity & Child Healthcare Hospital, Guangdong, China
| | - M X Xie
- Union Hospital, TJMC, HUST, Wuhan, China
| | - G G Xu
- Chinese PLA General Hospital, Beijing, China
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Dong GQ, Su YY, Qiu XY, Lu XY, Li JX, Huang M, Luo XP. [Clinical screening and genetic diagnosis for Prader-Willi syndrome]. Zhongguo Dang Dai Er Ke Za Zhi 2020; 22:1001-1006. [PMID: 32933634 PMCID: PMC7499446 DOI: 10.7499/j.issn.1008-8830.2003344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 05/27/2020] [Indexed: 06/11/2023]
Abstract
OBJECTIVE To study the clinical screening and genetic diagnosis of children suspected of Prader-Willi syndrome (PWS), as well as the differences in the scores of clinical diagnostic criteria among the children with a confirmed diagnosis of PWS. METHODS A total of 94 children suspected of PWS who were admitted from July 2016 to December 2018 were enrolled as subjects. Methylation-specific multiplex ligation-dependent probe amplification (MS-MLPA) was performed to confirm the diagnosis. For the children with a confirmed diagnosis of PWS, the scores of clinical diagnostic criteria were determined, and the perinatal characteristics were analyzed. RESULTS A total of 11 children with PWS were confirmed by MS-MLPA, with a detection rate of 12%, among whom there were 7 boys and 4 girls, with a median age of 3 years and 4 months (range 25 days to 6 years and 8 months) at the time of confirmed diagnosis. Among the 11 children with PWS, only 5 children (45%) met the criteria for clinical diagnosis. The main perinatal characteristics of the children with PWS were decreased fetal movement (9 cases, 82%), cesarean section birth (11 cases, 100%), hypotonia (11 cases, 100%), feeding difficulties (11 cases, 100%), and weak crying (11 cases, 100%). CONCLUSIONS Gene testing should be performed as early as possible for children suspected of PWS by clinical screening. PWS may be missed if only based on the scores of clinical diagnostic criteria.
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Affiliation(s)
- Guo-Qing Dong
- Department of Pediatrics, Shenzhen Maternity & Child Healthcare Hospital Affiliated to Southern Medical University, Shenzhen, Guangdong 518028, China.
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Liu XP, Wang HY, Dong GQ, Li ZQ, Guo YL. Fast Eruption Desorption Ionization for Mass Spectrometric Analysis. J Am Soc Mass Spectrom 2018; 29:1319-1322. [PMID: 29679286 DOI: 10.1007/s13361-018-1962-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 04/02/2018] [Accepted: 04/02/2018] [Indexed: 06/08/2023]
Abstract
Fast eruption desorption ionization (FEDI) technique was developed for simple, rapid, and sensitive analysis of various compounds. The FEDI allows three analytical modes each with the unique characteristic. The results demonstrated that non-assisted eruption was suitable for stable and volatile compounds, energetic material (EM)-assisted for nonvolatile molecules especially metal compounds, and solvent-assisted eruption for fragile molecules. High-quality mass spectra with intact ions of analytes were obtained in positive and negative ion modes. Graphical Abstract ᅟ.
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Affiliation(s)
- Xiao-Pan Liu
- State Key Laboratory of Organometallic Chemistry and National Center for Organic Mass Spectrometry in Shanghai, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 20032, China
| | - Hao-Yang Wang
- State Key Laboratory of Organometallic Chemistry and National Center for Organic Mass Spectrometry in Shanghai, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 20032, China.
| | - Guo-Qing Dong
- State Key Laboratory of Organometallic Chemistry and National Center for Organic Mass Spectrometry in Shanghai, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 20032, China
| | - Zhong-Quan Li
- State Key Laboratory of Organometallic Chemistry and National Center for Organic Mass Spectrometry in Shanghai, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 20032, China
| | - Yin-Long Guo
- State Key Laboratory of Organometallic Chemistry and National Center for Organic Mass Spectrometry in Shanghai, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 20032, China.
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Zeng YM, Zhang JY, Dong GQ, Liu PH, Xiao F, Zhang ZJ, Wu QZ. [Application of oral food challenge in the diagnosis of cow's milk protein allergy]. Zhongguo Dang Dai Er Ke Za Zhi 2016; 18:564-566. [PMID: 27324548 PMCID: PMC7389074 DOI: 10.7499/j.issn.1008-8830.2016.06.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 03/15/2016] [Indexed: 06/06/2023]
Affiliation(s)
- Yong-Mei Zeng
- Department of Pediatrics, Shenzhen Maternal and Child Health Hospital, ShenZhen 518000, China
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Huang M, Dong GQ, Jiang HY, Zhang JY, Shi XJ. [Serum adiponectin levels in children with Kawasaki disease]. Zhongguo Dang Dai Er Ke Za Zhi 2015. [PMID: 25616290 DOI: 10.7499/j.issn.1008-8830.2015.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
OBJECTIVE To explore the change in serum adiponectin levels and its significance in children with Kawasaki disease (KD). METHODS Forty-five KD patients were enrolled in this study, including 18 with coronary artery lesions (CAL group) and 27 without coronary artery lesions (NCAL group). Twenty healthy children were recruited to the control group. Enzyme-linked immunosorbent assay was used to measure serum adiponectin levels, and an automatic biochemical analyzer was used to measure the levels of triglyceride (TG), total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol (HDL-C). RESULTS The serum adiponectin levels in the CAL and NCAL groups were significantly lower than in the control group during the acute phase, subacute phase, and recovery phase (P<0.01), with lower levels observed during the acute phase and subacute phase (P<0.01). Compared with the NCAL group, the CAL group had significantly higher serum levels of adiponectin during the acute phase and recovery phase (P<0.05). The levels of TC, HDL, and LDL in the NCAL and CAL groups were significantly lower than in the control group (P<0.05). The levels of serum adiponectin in KD patients were positively correlated with the levels of TC, TG, and C-reactive protein and the occurrence of CAL (r=0.31, 0.30, 0.34, and 0.35, respectively; P<0.05). CONCLUSIONS Children with KD have metabolic disorders of blood lipids and reduced serum adiponectin levels. Reduced serum adiponectin levels may be the result of systemic inflammation, while increased adiponectin levels may be closely associated with the occurrence of CAL.
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Affiliation(s)
- Miao Huang
- Department of Pediatrics, Shenzhen Maternity and Child Health Care Hospital, Shenzhen, Guangdong 518028, China.
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Gao Q, Hu LW, Wang Y, Xu WY, Ouyang NN, Dong GQ, Shi ST, Liu Y. Skin texture parameters of the dorsal hand in evaluating skin aging in China. Skin Res Technol 2011; 17:420-6. [DOI: 10.1111/j.1600-0846.2011.00513.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Hu LW, Gao Q, Xu WY, Wang Y, Gong HZ, Dong GQ, Li JH, Liu Y. Diurnal variations in solar ultraviolet radiation at typical anatomical sites. Biomed Environ Sci 2010; 23:234-243. [PMID: 20708504 DOI: 10.1016/s0895-3988(10)60058-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2009] [Accepted: 06/09/2010] [Indexed: 05/29/2023]
Abstract
OBJECTIVE Solar ultraviolet (UV) radiation is an important environmental factor that affects human health. The understanding of diurnal variations of UV radiation at anatomical sites may be helpful in developing ways to protect humans from the harmful effects of UV radiation. METHODS In order to characterize the diurnal variations, the UV exposure values were measured at 30 min intervals by using Solar-UV Sensors and a rotating manikin in Shenyang city of China (41 degrees 51'N, 123 degrees 27'E). Measurement data for four representative days (in each of the four seasons respectively) were analyzed. RESULTS The diurnal variations in solar UV radiation at the shoulder, the forehead and the chest were similar to those associated with a horizontal control measurement. However, the diurnal variations at the eye and the cheek exhibited bimodal distributions with two peaks in spring, summer and autumn, and a unimodal distribution in winter. The UV exposure peaks at the eye and the cheek were measured at solar elevation angles (SEA) of about 30 degrees and 40 degrees , respectively. CONCLUSION The protection of some anatomical sites such as the eye from high UV exposure should not be focused solely on the periods before and after noon, especially in the places and seasons with high SEA.
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Affiliation(s)
- Li-Wen Hu
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning, China
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An L, Dong GQ, Gao Q, Zhang Y, Hu LW, Li JH, Liu Y. Effects of UVA on TNF-alpha, IL-1beta, and IL-10 expression levels in human keratinocytes and intervention studies with an antioxidant and a JNK inhibitor. Photodermatol Photoimmunol Photomed 2010; 26:28-35. [PMID: 20070836 DOI: 10.1111/j.1600-0781.2009.00481.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To understand the expressions and transduction pathways of cytokines in ultraviolet (UV)A-irradiated keratinocytes. METHODS We cultured human keratinocytes of the HaCaT cell line and investigated both mRNA and protein expressions of cytokines in cells that were not irradiated or were exposed to 2.4 J/cm(2) UVA, with or without an antioxidant (beta-carotene) or a c-Jun N-terminal kinase (JNK) inhibitor (SP600125). RESULTS We demonstrated that the expression levels of tumor necrosis factor (TNF)-alpha and interleukin (IL)-1beta were up-regulated in irradiated cells. IL-10 was not detected in non-irradiated cells, but was observed in irradiated cells. JNK was activated in irradiated cells and this could be antagonized by beta-carotene. The UVA-induced up-regulation of these cytokines was also antagonized by beta-carotene. SP600125 inhibited the UVA-induced increase in the expression of TNF-alpha mRNA and protein and in the expression of IL-1beta mRNA. CONCLUSIONS The results suggest that oxidative stress may be an early intermediate effect in JNK-dependent UVA induction of cytokine expression in human keratinocytes in vitro.
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Affiliation(s)
- Li An
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China
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Dong GQ, Yuan XL, Shan YJ, Zhao ZH, Chen JP, Cong YW. Molecular cloning and characterization of cDNA encoding fibrinolytic enzyme-3 from earthworm Eisenia foetida. Acta Biochim Biophys Sin (Shanghai) 2004; 36:303-8. [PMID: 15253157 DOI: 10.1093/abbs/36.4.303] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The earthworm fibrinolytic enzyme-3 (EFE-3, GenBank accession No: AY438622), from the earthworm Eisenia foetida, is a component of earthworm fibrinolytic enzymes. In this study, cDNA encoding the EFE-3 was cloned by RT-PCR. The cDNA contained an open reading frame of 741 nucleotides, which encoded a deduced protein of 247 amino acid residues, including signal sequences. EFE-3 showed a high degree of homology to earthworm (Lumbricus rebullus) proteases F-III-1, F-III-2, and bovine trypsin. The recombinant EFE-3 was expressed in E. coli as inclusion bodies, and the gene encoding the native form of EFE-3 was expressed in COS-7 cells in the medium. Both the refolding product of inclusion bodies and the secreted protease could dissolve the artificial fibrin plate.
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Affiliation(s)
- Guo-Qing Dong
- Department of Experimental Therapy of ARS, Beijing Institute of Radiation Medicine, China
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