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Chen M, Wang ST, Liu Y, Xiong P, Tao ZX, Zhang L, Jia JL, Wang CY, Xu S. [Genetic characteristics of varicella zoster virus in Shandong province from 2020 to 2021]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:1080-1086. [PMID: 35922235 DOI: 10.3760/cma.j.cn112150-20220105-00017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To investigate the genetic characteristics of varicella zoster virus (VZV) in Shandong province from 2020 to 2021. Methods: From April 2020 to December 2021, 85 herpes fluid samples from suspected varicella patients in Shandong province were collected. The qPCR was used to detect viral DNA and screen suspected samples. Six single nucleotide polymorphisms (SNPs) of ORF22 fragment and ORF38 fragment in positive samples were examined via PCR and Sanger sequencing to identify the viral genotypes. Four SNPs of ORF38 and ORF62 were examined to identify the vaccine and wild-type strains. The sequences were analyzed with Sequencher and MEGA7 software, using the VZV reference strain sequences from GenBank. Results: In the 85 samples suspected of varicella, 80 were VZV positive and wild-type strains belonging to Clade 2. Compared with clade 2 representative strains, the nucleotide and amino acid similarities of ORF22 fragment were 99.5%-100% and 98.5%-100%, respectively. SD20-1, SD20-5, SD20-6, SD20-8, SD20-9, SD20-10, SD20-11, SD20-12, SD20-13, SD20-30 and SD20-31 had a A➝G nucleotide mutation at 37990, causing amino acid change from glutamine to arginine. SD21-1 had a C➝A nucleotide mutation at 38059, causing threonine to asparagine during coding. Conclusions: From 2020 to 2021, all VZV strains in Shandong province are the wild-type strains belonging to Clade 2.
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Affiliation(s)
- M Chen
- Division of EPI, Shandong Center for Disease Control and Prevention, Jinan 250014, China Shandong Qidu Pharmaceutical Co. Ltd./Shandong Provincial Key Laboratory of Neuroprotective Drugs, Zibo 255400, China
| | - S T Wang
- Division of EPI, Shandong Center for Disease Control and Prevention, Jinan 250014, China
| | - Y Liu
- Division of EPI, Shandong Center for Disease Control and Prevention, Jinan 250014, China
| | - P Xiong
- Division of EPI, Shandong Center for Disease Control and Prevention, Jinan 250014, China
| | - Z X Tao
- Division of EPI, Shandong Center for Disease Control and Prevention, Jinan 250014, China
| | - L Zhang
- Division of EPI, Shandong Center for Disease Control and Prevention, Jinan 250014, China
| | - J L Jia
- Liaocheng Center for Disease Control and Prevention, Liaocheng 252000, China
| | - C Y Wang
- Division of EPI, Shandong Center for Disease Control and Prevention, Jinan 250014, China
| | - Songtao Xu
- National Institute for Viral Disease Control and Prevention, China Center for Disease Control and Prevention, Beijing 102206, China
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Huang H, Chen Y, Ma LY, Yan MM, Deng Y, Zhang WD, Yuan Y, Xiong P, Fang F, Liu TL. [Analysis of the clinical features and the risk factors of severe adenovirus pneumonia in children]. Zhonghua Er Ke Za Zhi 2021; 59:14-19. [PMID: 33396998 DOI: 10.3760/cma.j.cn112140-20200704-00687] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the clinical characteristics, risk factors for critical illness and death of severe adenovirus pneumonia in children, so as to provide clinical evidences for early diagnosis and reliable treatment. Methods: A total of 75 pediatric cases with severe adenovirus pneumonia admitted to Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology from January to October 2019 were studied. The clinical features, laboratory and imaging data, therapeutic approaches, efficacy of the treatments and prognosis were investigated retrospectively. Patients were divided into severe group and critical group. Chi square test and Mann-Whitney U rank sum test were used to analyze the data of the two groups. The risk factors for critical illness and death were analyzed by univariate and multivariate Logistic regression. Results: Among the 75 children, there were 52 males and 23 females, aged from 3 months to 8 years, including 30 of severe cases and 45 of critical case. The positive rate of adenovirus antigen in nasopharyngeal swab was 21% (15/72), and the positive rate of serum adenovirus IgM antibody was only 13% (10/75). However, the positive rate of adenovirus nucleic acid in nasopharyngeal swab was 75% (21/28). What is more, the positive rates of metagenomics next generation sequencing (mNGS) in plasma and bronchoalveolar lavage fluid were 92% (33/36) and 96% (54/56), respectively, of which 95% (63/66) were confirmed as adenovirus type 7. Relatively high dose of ribavirin and integrated therapeutic approaches (respiratory support, glucocorticoids, immunoglobulin and organ supportive therapies) were used. The recovery rate was 77% (58/75), the improvement rate was 8% (6/75) and the mortality rate was 15% (11/75). The proportion of children with the duration of fever longer than 3 days after ribavirin treatment in the critical group was significantly higher than that in the severe group(51% (18/35) vs. 8% (2/26), χ2=12.949, P<0.05). The risk factors for critical illness were younger than 4 years, longer duration of fever before and after admission to PICU, oxygenation index<300 mmHg (1 mm Hg=0.133 kPa), ferritin>1 000 μg/L, lactate dehydrogenase (LDH)>1 500 U/L, 5 lung lobes involvement, pleural effusion and (or) air leakage (all P<0.05). Among them, 5 lung lobes involvement was the independent risk factor for critical illness (adjusted OR=49.641, 95%CI 4.186-588.618, P=0.002). Risk factors for death included longer duration of fever after being admitted to PICU, oxygenation index<100 mmHg, ferritin>2 000 μg/L, interleukin (IL)-6>100 ng/L, LDH>1 500 U/L, pleural effusion and (or) air leakage (all P<0.05). Among them, IL-6>100 ng/L was the independent risk factor for the mortalities of critically ill children (adjusted OR=16.094, 95%CI 2.059-25.787, P=0.008). Conclusions: The mortality rate of severe pediatric adenovirus pneumonia caused by adenovirus type 7 is high. High positive rates of adenovirus nucleic acid in nasopharyngeal swabs and mNGS in plasma or bronchoalveolar lavage fluid contribute to early diagnosis, and mNGS can also be used for serotyping. Younger children under 4 years of age, persistent fever, extensive pulmonary lesions and significantly increased inflammatory cytokines such as IL-6 are warning indicators for critical illness and poor prognosis. Relatively high dose of ribavirin combined with integrated therapeutic approaches are beneficial for prognosis.
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Affiliation(s)
- H Huang
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Y Chen
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - L Y Ma
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - M M Yan
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Y Deng
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - W D Zhang
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Y Yuan
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - P Xiong
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - F Fang
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - T L Liu
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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Zhang YZ, Xiong P, Zhao HD, Chen ZC, Wei XY, Liu Q, Chen FY, Cheng Y, Hu J, Li SN, Yang J, Zhang Q. [Tap-hammer elicited vestibular-evoked myogenic potentials system: its design and preliminary application]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2020; 55:957-961. [PMID: 33036511 DOI: 10.3760/cma.j.cn115330-20200427-00338] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: The aim of this study was to design and perform "Tap-hammer"system that can be used to elicit vestibular evoked myogenic potentials (VEMP) in normal adults and to report the preliminary results of this system. Methods: A triggered Tap-hammer was designed, made and connected with an electric recording system, to form as a system for Tap-VEMP recording. Twenty healthy adult volunteers (7 males and 13 females, aged 20 to 37 years, 40 ears in total) were recruited for air-conducted sound VEMP (ACS-VEMP) and Tap-VEMP examinations. Waveforms and parameters of both VEMPs were recorded and analyzed. SPSS 22.0 software was used for statistical analysis. Results: The response rates of ACS-, Tap-ocular VEMP (oVEMP) and ACS-, Tap-cervical VEMP (cVEMP) were both 100% (40/40). The mean±SD n1 latency, p1 latency, n1-p1 interval, amplitude, and asymmetry ratio (AR%) of Tap-oVEMP were (9.80±2.51)ms, (13.90±3.26)ms, (4.09±1.43)ms, (16.43±9.61)μV, (22.68±17.35)% respectively. The mean±SD p1 latency, n1 latency, p1-n1 interval, amplitude, and asymmetry ratio (AR%) of Tap-cVEMP were (13.26±2.07)ms, (21.84±2.89)ms, (8.58±2.10)ms, (457.65±274.94)μV, (20.42±13.46)% respectively. Both n1 latency and p1 latency of Tap-VEMPs were shorter than those in ACS-VEMPs (P<0.05). No statistical difference could be found between the two stimulation methods in the parameters of n1-p1 interval, amplitude, and asymmetry ratio(P>0.05). Conclusion: The Tap-hammer system can elicit VEMP responses in healthy young people. This system can be used as an alternative stimulation method for bone conduction VEMP.
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Affiliation(s)
- Y Z Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - P Xiong
- Shanghai Haishen Medical Electronic Instrument co. LTD, Shanghai 200093, China
| | - H D Zhao
- Department of Otorhinolaryngology Head and Neck Surgery, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Z C Chen
- Department of Otorhinolaryngology Head and Neck Surgery, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - X Y Wei
- Department of Otorhinolaryngology Head and Neck Surgery, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Q Liu
- Department of Otorhinolaryngology Head and Neck Surgery, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - F Y Chen
- Department of Otorhinolaryngology Head and Neck Surgery, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Y Cheng
- Department of Otorhinolaryngology Head and Neck Surgery, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - J Hu
- Department of Otorhinolaryngology Head and Neck Surgery, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - S N Li
- Department of Otorhinolaryngology Head and Neck Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Ear Institute, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Otolarsal Disease Transformation, Shanghai 200092, China
| | - J Yang
- Department of Otorhinolaryngology Head and Neck Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Ear Institute, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Otolarsal Disease Transformation, Shanghai 200092, China
| | - Q Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China (is now in the Department of Otorhinolaryngology Head and Neck Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine)
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Gvetadze SR, Xiong P, Nadtochiy AG, Vozgoment OB, Ilkaev KD, Didbaridze DA, Sun J. [Capabilities of contrast-enhanced ultrasound for preoperative assessment of regional lymphatic basin in patients with early oral cavity squamous cell cancer]. Stomatologiia (Mosk) 2019; 98:123-129. [PMID: 31322608 DOI: 10.17116/stomat201998031123] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
This review paper describes the possibilities of visualization of regional lymph nodes using contrast-enhanced ultrasound. Discussed is the experience of contrast-enhanced ultrasound implication for differential diagnosis of regional metastases of squamous cell carcinoma of the oral mucosa. The basics of the technique of contrast-enhanced ultrasound examination of the neck lymphatic basin are described.
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Affiliation(s)
- Sh R Gvetadze
- Central Research Institute of Dentistry and Maxillofacial Surgery, Ministry of health of Russia, Moscow, Russia; Department of oral and maxillofacial surgery, Russia, Russian Medical Academy of Continuous Professional Education at the Ministry of Health of Russia, Moscow, Russia
| | - P Xiong
- Department of Ultrasound, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - A G Nadtochiy
- Central Research Institute of Dentistry and Maxillofacial Surgery, Ministry of health of Russia, Moscow, Russia
| | - O B Vozgoment
- Central Research Institute of Dentistry and Maxillofacial Surgery, Ministry of health of Russia, Moscow, Russia; Department of radiologic diagnosis of childhood age, Moscow, Russia
| | - K D Ilkaev
- Central Research Institute of Dentistry and Maxillofacial Surgery, Ministry of health of Russia, Moscow, Russia; N.N. Blokhin National Medical Research Center of Oncology, Ministry of Health of Russia, Moscow, Russia
| | - D A Didbaridze
- Central Research Institute of Dentistry and Maxillofacial Surgery, Ministry of health of Russia, Moscow, Russia
| | - J Sun
- Central Research Institute of Dentistry and Maxillofacial Surgery, Ministry of health of Russia, Moscow, Russia; Department of Oral Maxillofacial - Head Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
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Abstract
AIM To investigate nurses' knowledge, attitudes and practices related to physical restraint in tertiary hospitals and identify the factors that influence physical restraint use. BACKGROUND Physical restraint is used to maintain patient safety. Nurses play an important role in the restraint process. It is important to identify their understanding, feelings and approach regarding the use of physical restraint. INTRODUCTION Physical restraint is widely practiced in hospitals in China. However, it results in a range of serious negative consequences. This article provides a clear description of nurses' knowledge, attitudes and practices related to physical restraint. METHODS A cross-sectional survey was conducted. The participants were asked to complete a questionnaire examining their knowledge, attitudes and practices related to physical restraint use. A total of 200 questionnaires were distributed in four tertiary hospitals in Hubei Province, China between August and October 2014. RESULTS The nurses' responses indicated a good level of knowledge regarding physical restraint use. However, they held some misconceptions. The nurses' attitudes towards physical restraint tended to be neutral. The nurses were well experienced in the use of physical restraint. Nurses who had received on-the-job training performed better than those who had received no training related to knowledge and practices regarding physical restraint use. CONCLUSIONS AND IMPLICATION FOR NURSING/HEALTH POLICY In-service training is highly recommended for nursing managers to improve nurses' physical restraint related knowledge and practices. Regulations regarding the use of restraints should be established as soon as possible by healthcare administration system. IMPLICATIONS FOR NURSING Nurses should be open to evaluate and improve their views and attitudes regarding effective physical restraint use via multidimensional interventions.
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Affiliation(s)
- L Wang
- Department of Allergy, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - X-P Zhu
- Department of Nursing, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - X-T Zeng
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - P Xiong
- Department of Respiration Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
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Park L, Schwei RJ, Xiong P, Jacobs EA. Addressing Cultural Determinants of Health for Latino and Hmong Patients with Limited English Proficiency: Practical Strategies to Reduce Health Disparities. J Racial Ethn Health Disparities 2018; 5:536-544. [PMID: 28791616 PMCID: PMC5803465 DOI: 10.1007/s40615-017-0396-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 05/31/2017] [Accepted: 06/05/2017] [Indexed: 01/08/2023]
Abstract
We explored how addressing culture may improve patient-provider relationships and reduce health disparities for racial and ethnic individuals with limited English proficiency (LEP). We analyzed qualitative data collected to explore health disparities in preventive cancer screenings for Hmong and Spanish-speaking LEP patients in a large Midwest healthcare system. We interviewed 20 participants (10 from each group) and the audiotaped interviews were transcribed verbatim, then back translated focusing on meaning. Data was analyzed using content analysis. Two themes are: conversation is relational and quality time is valued. Good communication skills involve the amount of conversation, clear explanations, and engaging with the patient. Quality of time meant physical time spent with patient and the task-oriented nature of the encounter. Cultural literacy in healthcare practice helps to understand the whole patient rather than focusing on the symptoms of illness. Patients should not be treated in isolation of their culture. A patient-centered approach to care means physicians should not remain culturally neutral but be more culturally sensitive. We propose steps to reduce disparities by increasing the awareness of cultural literacy for physicians to improve patient-provider relationship.
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Affiliation(s)
- Linda Park
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA.
| | - R J Schwei
- Department of Emergency Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | - P Xiong
- School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | - E A Jacobs
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Department of Population Health Sciences, University of Wisconsin-Madison, Madison, WI, USA
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Li Y, Deng Q, Xiong P, Xie C, Tang X. 0446 Increased Sympathetic Activity Is Associated With Hypertension In Sleep Apnea: BMI Effect. Sleep 2018; 41:A169-A169. [DOI: 10.1093/sleep/zsy061.445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Affiliation(s)
- Y Li
- Mental Health Center, Shantou University Medical College, China, Shantou, CHINA
| | - Q Deng
- Mental Health Center, Shantou University Medical College, Shantou, CHINA
| | - P Xiong
- Mental Health Center, Shantou University Medical College, Shantou, CHINA
| | - C Xie
- Mental Health Center, Shantou University Medical College, Shantou, CHINA
| | - X Tang
- Sleep Medicine Center, Mental Health Center, Translational Neuroscience Center, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, CHINA
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Xu Q, Xiong P, Fang XQ, Liu XD, Wang CY, Song LZ, Xu AQ. [Evaluation on the short term effectiveness of two doses mumps-containing vaccine policy in Shandong, China]. Zhonghua Yu Fang Yi Xue Za Zhi 2018; 52:265-270. [PMID: 29973005 DOI: 10.3760/cma.j.issn.0253-9624.2018.03.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the effectiveness of mumps prevention and control after implementation of two doses mumps-containing combined vaccine (MuCV) policy by analyzing epidemiological characteristics of mumps and mumps antibody levels in general population. Methods: We obtained data on cases of mumps reported during 2004-2015 from National Notifiable Diseases Reporting System (NNDRS). Descriptive analysis methods were used to describe the epidemiological characteristics of mumps during 2004-2015. MuCV immunization information from 2005 to 2015 was obtained from the immunization information management system in Shandong Province. Antibody data of mumps in healthy people were from a cross-sectional survey according to the principle of stratified random sampling from 0 to 60 years old healthy people in 2015. Commercial ELISA kits were used to detect and quantify human IgG antibodies against mumps virus in sera, and the results were analyzed statistically. Results: The average incidence of mumps from 2004 to 2015 was 11.43/100 000 in Shandong. The incidence of mumps in the central region (14.64/100 000) was higher than that in the eastern and western regions (11.14/100 000, 11.33/100 000). The incidence of mumps was still high in 2009-2013 (stage of one-dose MuCV free, 16.07/100 000) with the highest incidence of 25.33/100 000 and 24.45/100 000 occurred in 2012 and 2013 and the cases were mainly 6 to 9 years old group (172.67/100 000). Since the second dose MuCV was introduced into NIP for 6 years old children in May 2013 in Shandong, the incidence of mump decreased significantly in 2014-2015 (7.81/100 000), especially in children of 6-8 years old who were vaccinated with two doses of MuCV (2009-2013 was 114.02/100 000; 2014-2015 was 45.66/100 000) and lower than 3-5 years old vaccinated one doses of MuCV. A total of 1 785 serum samples were collected from the healthy population, the average seroprevalence was 80.62% and Geometric Mean Concentration (GMC) was 38.11 IU/ml (95%CI: 37.03-39.19 IU/ml) . There was no significant difference about seroprevalence in different regions, while the GMC in middle region was significantly higher compared to east and west region. The prevalence and GMC in children aged 19 months-2 years and 3-5 years old who received one dose of MuCV were significantly higher than those of <19 months old children. The GMC (46.88 IU/ml, 95%CI: 39.43-55.74 IU/ml) in children aged 6-9 years old who received the two doses MuCV was significantly higher than that of aged 3-5 years old children (31.71 IU/ml, 95%CI: 27.23-36.93 IU/ml). Conclusion: The incidence of mumps in Shandong was still at a high level in spite of coverage one doses MuCV to children. Compared with the period of the 1 dose MuCV immunization strategy, the incidence the groups coverage two doses MuCV was significantly reduced and lower the groups coverage one dose MuCV, but the prevalence and GMC were higher than that of the groups coverage one dose MuCV.
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Affiliation(s)
- Q Xu
- Division of Expanded Immunization Program, Shandong Province Center for Disease Control and Prevention, Ji'nan 250014, China
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Yuan XL, Xu ZP, Liu CR, Yan LP, Tao P, Xiong P, Li Q, Zhou M, Li H, Zhao M, Li JY. [Study of the association between polymorphism of persistent obesity, human leptin gene/leptin receptor gene and molecular subtypes of breast cancer]. Zhonghua Yu Fang Yi Xue Za Zhi 2017; 51:533-538. [PMID: 28592099 DOI: 10.3760/cma.j.issn.0253-9624.2017.06.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objectives: To explore the association between the polymorphism of persistent obesity and genetic variations in the LEP (human leptin gene, LEP) and LEPR (leptin receptor gene, LEPR) genes and different molecular subtypes of breast cancer. Methods: All 703 female patients of breast cancer diagnosed by histopathology in the Sichuan Cancer Hospital or the West China Hospital, excluding patients with metastatic breast cancer or mental disease, were selected as cases from April 2014 to May 2015. At the same time, 805 healthy women received physical examination in medical examination center of Sichuan People Hospital or Shuangliu maternal and child health care hospital, excluding those with therioma, breast disease, and mental disease, were enrolled in control group. A uniform questionnaire was used to collect general information including demographic characteristic, reproductive history height, weight, and so on. And the obesity status in recent 10 years was judged. Time of Flight Mass Spectrometer was used to determine the genotypes of LEP rs7799039, LEPR rs1137100 and LEPR rs1137101, while the multinomial logistic regression analysis was conducted to estimate the effect of risk factors related to breast cancer in different molecular subtypes; and then, the association between polymorphism of persistent obesity, the LEP, LEPR genes and breast cancer of different molecular subtypes was analyzed by binary logistic regression models. Results: The average age of controls was (48.98±8.83) years old, while the age of cases of TNBC, Luminal A, Luminal B, and HER-2+ were (51.43±11.33), (49.94±10.10), (49.73±9.38), (50.50±9.04) years old, respectively. The frequency of genotype LEP rs7799039, LEPR rs1137100 and LEPR rs1137101 in control group was separately 74.8%(1 157/1 546), 83.6%(1 339/1 602) and 88.4%(1 416/1 602); while 77.6% (1 074/1 384), 82.4% (1 155/1 402) and 87.9% (1 232/1 402) respectively in case group. Compared with non-persistent obesity subjects, the persistent obesity ones showed an increased risk in TNBC (OR=3.58, 95%CI: 1.90-6.72), Luminal A (OR=2.65, 95%CI: 1.35-5.21) and Luminal B (OR=1.90, 95%CI: 1.26-2.89) breast cancer. LEP rs7799039-AA was relevant with the upward risk of Luminal B independently (OR=1.30, 95%CI: 1.00-1.69). Besides, persistent obesity was found to have a combined effect on Luminal B (β=3.34, 95% CI: 1.00-11.12) with LEPR rs1137101-GG. Conclusion: Persistent obesity could increase the potential risk of TNBC, Luminal A and Luminal B breast cancer. Women who were suffered from persistent obesity with a genotype of LEPR rs1137101-GG were more susceptible to Luminal B breast cancer.
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Affiliation(s)
- X L Yuan
- West China School of Public Health, Sichuan University, Chengdu 610041, China
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Gvetadze SR, Lv M, Ilkaev KD, Xiong P, Li J, Yang X, Sun J. [Imaging diagnostic methods for identification of sentinel lymph nodes in patients with early squamous cell carcinoma of the oral cavity mucosa: a literature review]. Stomatologiia (Mosk) 2017; 96:69-73. [PMID: 29072651 DOI: 10.17116/stomat201796569-73] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The paper describes properties of clinical visualization approaches which are applied for detection of sentinel lymph nodes in patients suffering from oral cavity squamous cell cancer. Diagnostic efficiency results and technological features of different imaging techniques are discussed.
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Affiliation(s)
- S R Gvetadze
- Department of Oral Maxillofacial - Head Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China; Central Research Institute of Dentistry and Maxillofacial Surgery, Moscow, Russia
| | - M Lv
- Department of Oral Maxillofacial - Head Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - K D Ilkaev
- Department of head and neck tumors, upper gastro-respiratory tract tumors, N.N. Blokhin Russian Cancer Research Center, Moscow, Russia
| | - P Xiong
- Department of Ultrasound, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - J Li
- Department of Oral Maxillofacial - Head Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - X Yang
- Department of Oral Maxillofacial - Head Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - J Sun
- Department of Oral Maxillofacial - Head Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
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11
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Luo C, Li RZ, Xu QQ, Xiong P, Liu YX, Xue FZ, Xu Q, Li XJ. [Application of State Space model in the evaluation of the prevention and control for mumps]. Zhonghua Liu Xing Bing Xue Za Zhi 2017; 38:1218-1221. [PMID: 28910935 DOI: 10.3760/cma.j.issn.0254-6450.2017.09.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the epidemiological characteristics of mumps in 2012 and 2014, and to explore the preventive effect of the second dose of mumps-containing vaccine (MuCV) in mumps in Shandong province. Methods: On the basis of certain model assumptions, a Space State model was formulated. Iterated Filter was applied to the epidemic model to estimate the parameters. Results: The basic reproduction number (R(0)) for children in schools was 4.49 (95%CI: 4.30-4.67) and 2.50 (95%CI: 2.38-2.61) respectively for the year of 2012 and 2014. Conclusions: Space State model seems suitable for mumps prevalence description. The policy of 2-dose MuCV can effectively reduce the number of total patients. Children in schools are the key to reduce the mumps.
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Affiliation(s)
- C Luo
- Department of Biostatistics, School of Public Health, Shandong University, Jinan 250012, China
| | - R Z Li
- Department of Biostatistics, School of Public Health, Shandong University, Jinan 250012, China
| | - Q Q Xu
- Department of Biostatistics, School of Public Health, Shandong University, Jinan 250012, China
| | - P Xiong
- Shandong Provincial Center for Disease Control and Prevention, Jinan 250014, China
| | - Y X Liu
- Department of Biostatistics, School of Public Health, Shandong University, Jinan 250012, China
| | - F Z Xue
- Department of Biostatistics, School of Public Health, Shandong University, Jinan 250012, China
| | - Q Xu
- Shandong Provincial Center for Disease Control and Prevention, Jinan 250014, China
| | - X J Li
- Department of Biostatistics, School of Public Health, Shandong University, Jinan 250012, China
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12
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Sinha N, Letourneau J, Xiong P, Harris E, Mok-Lin E, Cedars M, Rosen M. Reproductive aged breast cancer patients who interrupt hormonal treatment to conceive resume therapy. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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Letourneau J, Sinha N, Xiong P, Harris E, Gomes E, Chin-Yu C, Mok-Lin E, Cedars M, Rosen M. Fertility preservation does not prolong neoadjuvant chemotherapy start but patients still perceive a delay. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Sinha N, Letourneau J, Chan S, Niemasik E, Xiong P, Harris E, Mok-Lin E, Cedars M, Rosen M. Improvement in quality of life with fertility preservation begins after cancer treatment and persists one year after cancer treatment. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.280] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Sinha N, Letourneau J, Xiong P, Harris E, Gomes E, Chin-Yu C, Mok-Lin E, Cedars M, Rosen M. Fertility outcomes in reproductive aged breast cancer patients after chemotherapy. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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16
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Guo Y, Liu B, Xiong P, He J, Gang L, Xue Y, Koontz AF, Yu D. 415 Effect of Cu provided As Bioplex® Cu or TBCC for weaned pigs: Growth performance, tissue mineral retention, and fecal mineral excretion. J Anim Sci 2017. [DOI: 10.2527/asasann.2017.415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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17
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Yang F, Xiong P, Yuan XL, Liu CR, Ran LJ, Yang Y, Li JY. [Association of XRCC1 gene polymorphism and low dose ionizing radiation with peripheral blood lymphocyte micronucleus]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2017; 35:189-192. [PMID: 28511303 DOI: 10.3760/cma.j.issn.1001-9391.2017.03.007] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the effects of X-ray repair cross complementing gene 1 (XRCC1) polymorphism and low dose ionizing radiation exposure on radiology professionals' peripheral blood lymphocyte micronucleus. Methods: A matched case-control study was designed. From 2013 to 2015, 1 102 radiology professionals with micronucleus test rusults, and 45 cases with present micronucleus were enroled into case group. 180 diagnostic radiology technicians detecting no micronucleus were chosen as control group, cases and controls were 1∶4 mached on gender, age ≤40 or >40 years old. According to the detection of micronucleus levels (0‰, 1‰, 2‰) , the objects of our study were divided into the reference group, the low detection group and the medium detection group. The form of radiation workers' occupational health examination was used to collect the general baseline of the research objects, history of smoking, drinking, poisonous and harmful material exposure, past medical history, accumulated illuminated dose and lymphocyte micronucleus rates (‰) , etc. Using restriction fragment length polymorphism polymerase chain reaction (RFLP-PCR) technology for genotyping; Compared the baseline data and radiation exposure level between the differentmicrokernel detection groups; Adopted multivariate logistic regression to analysis the combination effect of XRCC1 Arg399Gln gene polymorphism and accumulated illuminated dosefor micronucleus rate. Results: The accumulated illuminated dose in the reference group, the low detection group and the medium detection group were (23.44±15.23) , (21.76±2.56) , (24.22±18.61) mSv, respectively. There was no statistically significant difference among the groups (P>0.05) . Under the dominant inheritance mode, after adjusted age, smoking and drinking factors, the results suggested that XRCC1 Arg399Gln micronucleus medium detection group compared with the reference group, Arg399Gln-GG as reference, Arg399Gln-GA+AA decreased the occurrence of micronucleus (OR=0.175, 95%CI: 0.036-0.848) . Arg194Trp and Arg280His did not affect the incidence of micronucleus (P>0.05) . Did not find the combination effect of XRCC1 Arg399Gln gene polymorphism and accumulated illuminated dose for micronucleus rate (P>0.05) . Conclusion:XRCC1 Arg399Gln gene polymorphism can affect the incidence of micronucleus, and carrying the XRCC1 Arg399Gln-GA+AA genotype is a protective factor of micronucleus's occurrence, but low dose ionizing radiation may not affect the occurrence of micronucleus independently.
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Affiliation(s)
- F Yang
- Chengdu Center for Disease Control and Prevention, Chengdu 610041, China
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18
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Zhou N, Lin X, Wang S, Tao Z, Xiong P, Wang H, Liu Y, Song Y, Xu A. Molecular epidemiology of GI and GII noroviruses in sewage: 1-year surveillance in eastern China. J Appl Microbiol 2016; 121:1172-9. [DOI: 10.1111/jam.13218] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Revised: 06/24/2016] [Accepted: 06/29/2016] [Indexed: 12/22/2022]
Affiliation(s)
- N. Zhou
- School of Public Health; Shandong University; Jinan China
| | - X. Lin
- Academy of Preventive Medicine; Shandong University; Jinan China
- Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention; Shandong Center for Disease Control and Prevention; Jinan China
| | - S. Wang
- Academy of Preventive Medicine; Shandong University; Jinan China
- Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention; Shandong Center for Disease Control and Prevention; Jinan China
| | - Z. Tao
- Academy of Preventive Medicine; Shandong University; Jinan China
- Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention; Shandong Center for Disease Control and Prevention; Jinan China
| | - P. Xiong
- Academy of Preventive Medicine; Shandong University; Jinan China
- Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention; Shandong Center for Disease Control and Prevention; Jinan China
| | - H. Wang
- Academy of Preventive Medicine; Shandong University; Jinan China
- Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention; Shandong Center for Disease Control and Prevention; Jinan China
| | - Y. Liu
- Academy of Preventive Medicine; Shandong University; Jinan China
- Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention; Shandong Center for Disease Control and Prevention; Jinan China
| | - Y. Song
- School of Public Health; Shandong University; Jinan China
| | - A. Xu
- School of Public Health; Shandong University; Jinan China
- Academy of Preventive Medicine; Shandong University; Jinan China
- Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention; Shandong Center for Disease Control and Prevention; Jinan China
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19
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Zhu LJ, Nie SH, Xiong P, Schlottmann P, Zhao JH. Orbital two-channel Kondo effect in epitaxial ferromagnetic L1(0)-MnAl films. Nat Commun 2016; 7:10817. [PMID: 26905518 PMCID: PMC4770089 DOI: 10.1038/ncomms10817] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 01/22/2016] [Indexed: 11/17/2022] Open
Abstract
The orbital two-channel Kondo effect displaying exotic non-Fermi liquid behaviour arises in the intricate scenario of two conduction electrons compensating a pseudo-spin-1/2 impurity of two-level system. Despite extensive efforts for several decades, no material system has been clearly identified to exhibit all three transport regimes characteristic of the two-channel Kondo effect in the same sample, leaving the interpretation of the experimental results a subject of debate. Here we present a transport study suggestive of a robust orbital two-channel Kondo effect in epitaxial ferromagnetic L10-MnAl films, as evidenced by a magnetic field-independent resistivity upturn with a clear transition from logarithmic- to square-root temperature dependence and deviation from it in three distinct temperature regimes. Our results also provide an experimental indication of the presence of two-channel Kondo physics in a ferromagnet, pointing to considerable robustness of the orbital two-channel Kondo effect even in the presence of spin polarization of the conduction electrons. In metals, electronic scattering from defects by the two-channel Kondo effect is expected to cause deviation from standard low temperature behaviour, however this effect has not been unambiguously shown. Here, the authors present evidence consistent with all transport signatures of the effect in ferromagnetic L10-MnAl films.
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Affiliation(s)
- L J Zhu
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, PO Box 912, Beijing 100083, China.,Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, von-Danckelmann-Platz 3, Halle 06120, Germany
| | - S H Nie
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, PO Box 912, Beijing 100083, China
| | - P Xiong
- Department of Physics, Florida State University, Tallahassee, Florida 32306, USA
| | - P Schlottmann
- Department of Physics, Florida State University, Tallahassee, Florida 32306, USA
| | - J H Zhao
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, PO Box 912, Beijing 100083, China
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20
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Chen H, Sun Y, Lai L, Wu H, Xiao Y, Ming B, Gao M, Zou H, Xiong P, Xu Y, Tan Z, Gong F, Zheng F. Interleukin-33 is released in spinal cord and suppresses experimental autoimmune encephalomyelitis in mice. Neuroscience 2015; 308:157-68. [DOI: 10.1016/j.neuroscience.2015.09.019] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 09/03/2015] [Accepted: 09/04/2015] [Indexed: 01/01/2023]
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21
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Zou H, Yang Y, Gao M, Zhang B, Ming B, Sun Y, Chen H, Tang X, Chen Z, Xiong P, Xu Y, Fang M, Tan Z, Gong F, Zheng F. HMGB1 is involved in chronic rejection of cardiac allograft via promoting inflammatory-like mDCs. Am J Transplant 2014; 14:1765-77. [PMID: 24984831 DOI: 10.1111/ajt.12781] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 04/04/2014] [Accepted: 04/06/2014] [Indexed: 01/25/2023]
Abstract
Chronic rejection that leads to diffuse narrowing and occlusion of graft vessels is the most important cause of morbidity and mortality following cardiac transplantation. The role and underlying mechanism of high-mobility group box 1 (HMGB1), as an established inflammatory mediator in acute rejection, remains poorly understood in chronic rejection. Here, we assessed the effects and mechanisms of HMGB1 on the chronic rejection using single MHC Class II-mismatched mouse cardiac transplantation model. It was found that HMGB1 was increased accompanying with the development of chronic rejection, while blockade of HMGB1 with specific neutralizing mAb substantially ameliorated chronic rejection-mediated vasculopathy and fibrosis of allograft, as well as markedly decreased T cell infiltration and production of IL-17A and interferon-gamma in allograft and recipient's spleen. Further, anti-HMGB1 antibody treatment significantly declined the number and frequency of mature dendritic cells (DCs) in allograft and recipient's spleen, especially CD11b(+) Ly6C(high) matured DCs that share the phenotypes with inflammatory-DCs. These findings indicate that HMGB1 contributes to chronic rejection, and HMGB1 blockade may be a novel mean to disrupt the proinflammatory loop after heart transplantation.
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Affiliation(s)
- H Zou
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Key Laboratory of Organ Transplantation, Ministry of Education, China; Key Laboratory of Organ Transplantation, Ministry of Public Health, China
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22
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Abstract
Even to date, Oral squamous cell carcinoma (OSCC), which is one of the most common malignancies worldwide, is still a major public health problem. The cellular mechanisms underlying development of OSCC are poorly understood. Lipid rafts-associated proteins not only serve as a docking platform for protein sorting and membrane trafficking, but also coordinate signaling molecules at cell membrane to mediate intracellular responses, which makes them susceptible to be subverted by cancer cells. Although Flotillin-1 has been discovered for decades, its potential role in OSCC development is largely unknown. In current study, we demonstrate that Flotillin-1 is highly expressed in OSCC cell lines compared to normal oral epithelial cells. Modulation of Flotillin-1 expression via transfection with Flotillin-1 expression vector or shRNA showed that Flotillin-1 has a clearly positive impact on cell growth and motility in KB and/or Tca8113 cell lines. These observations were further supported by using mice or zebrafish tumor xenograft models. Mechanistic study indicated that Flotillin-1 expression activates NF-κB signaling pathway by enhancing phosphorylation of p65 and IκBα, and translocation of p65 into nucleus. Furthermore, inhibition of EGFR by AG1478 markedly repressed Flotillin-1-induced activation of NF-κB signaling pathway. Our studies suggested that Flotillin-1 plays an important role in OSCC development, and might be a potential therapeutic target for OSCC.
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Affiliation(s)
- P Xiong
- Sichuan University, Chengdu, China
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Shi LL, Xiong P, Zhang L, Cao PP, Liao B, Lu X, Cui YH, Liu Z. Features of airway remodeling in different types of Chinese chronic rhinosinusitis are associated with inflammation patterns. Allergy 2013; 68:101-9. [PMID: 23157215 DOI: 10.1111/all.12064] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/29/2012] [Indexed: 01/28/2023]
Abstract
BACKGROUND The remodeling patterns in different types of chronic rhinosinusitis (CRS) have rarely been compared, particularly the difference between eosinophilic and noneosinophilic CRS with nasal polyps (CRSwNP). Moreover, whether there is a link between remodeling and inflammation remains controversial. OBJECTIVE To directly compare the remodeling features of different CRS and to explore their relationship with inflammation in Chinese patients. METHODS Histologic characteristics of surgical samples were analyzed in 33 controls, 72 eosinophilic and 76 noneosinophilic CRSwNP, and 72 CRS without nasal polyps (CRSsNP) patients. Tissue samples from 38 controls, 26 eosinophilic and 26 noneosinophilic CRSwNP, and 32 CRSsNP patients were measured for mRNA and/or protein expression of profibrotic growth factors, metalloproteinases (MMPs), tissue inhibitor of metalloproteinases (TIMPs), hypoxia-inducible factor (HIF)-1α, interleukin (IL)-8, eosinophil cationic protein (ECP), and myeloperoxidase (MPO). RESULTS The amount of collagen decreased, whereas the edema scores increased, from CRSsNP to noneosinophilic CRSwNP and to eosinophilic CRSwNP. Transforming growth factor (TGF)-β2 protein levels were enhanced in CRSsNP compared with CRSwNP. TIMP-4 protein levels decreased in eosinophilic CRSwNP compared with noneosinophilic CRSwNP and CRSsNP. The number of neutrophils decreased from CRSsNP to noneosinophilic CRSwNP and to eosinophilic CRSwNP. ECP levels were only up-regulated in eosinophilic CRSwNP. ECP levels and neutrophil number correlated positively with the severity of edema and fibrosis, respectively. Neutrophils were the major sources of TGF-β2 in CRSsNP and noneosinophilic CRSwNP. CONCLUSION Distinct remodeling patterns are revealed for different types of CRS, particularly for eosinophilic and noneosinophilic CRSwNP. Tissue remodeling associates with inflammation in CRS.
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Affiliation(s)
- L-L. Shi
- Department of Otolaryngology-Head and Neck Surgery; Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology; Wuhan; China
| | - P. Xiong
- Department of Pediatrics; Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology; Wuhan; China
| | - L. Zhang
- Department of Otolaryngology-Head and Neck Surgery; Beijing Tongren Hospital; Capital Medical University; Beijing; China
| | - P-P. Cao
- Department of Otolaryngology-Head and Neck Surgery; Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology; Wuhan; China
| | - B. Liao
- Department of Otolaryngology-Head and Neck Surgery; Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology; Wuhan; China
| | - X. Lu
- Department of Otolaryngology-Head and Neck Surgery; Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology; Wuhan; China
| | - Y-H. Cui
- Department of Otolaryngology-Head and Neck Surgery; Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology; Wuhan; China
| | - Z. Liu
- Department of Otolaryngology-Head and Neck Surgery; Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology; Wuhan; China
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Aledealat K, Mihajlović G, Chen K, Field M, Sullivan GJ, Xiong P, Chase PB, von Molnár S. Dynamic micro-Hall detection of superparamagnetic beads in a microfluidic channel. J Magn Magn Mater 2010; 322:L69-L72. [PMID: 21655331 PMCID: PMC3108004 DOI: 10.1016/j.jmmm.2010.08.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
We report integration of an InAs quantum well micro-Hall magnetic sensor with microfluidics and real-time detection of moving superparamagnetic beads. Beads moving within and around the Hall cross area result in positive and negative Hall voltage signals respectively. Relative magnitudes and polarities of the signals measured for a random distribution of immobilized beads over the sensor are in good agreement with calculated values and explain consistently the shape of the dynamic signal.
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Affiliation(s)
- K Aledealat
- Department of Physics and MARTECH, Florida State University, Tallahassee, FL 32306, United States
- Corresponding author. (K. Aledealat)
| | - G Mihajlović
- San Jose Research Center, Hitachi Global Storage Technologies, San Jose CA, 95135, United States
| | - K Chen
- Department of Physics and MARTECH, Florida State University, Tallahassee, FL 32306, United States
| | - M Field
- Teledyne Scientific Company LLC, Thousand Oaks, CA 90360, United States
| | - G J Sullivan
- Teledyne Scientific Company LLC, Thousand Oaks, CA 90360, United States
| | - P Xiong
- Department of Physics and MARTECH, Florida State University, Tallahassee, FL 32306, United States
- Integrative NanoScience Institute, Florida State University, Tallahassee, FL 32306, United States
| | - P B Chase
- Integrative NanoScience Institute, Florida State University, Tallahassee, FL 32306, United States
- Department of Biological Science, Florida State University, Tallahassee, FL 32306, United States
| | - S von Molnár
- Department of Physics and MARTECH, Florida State University, Tallahassee, FL 32306, United States
- Integrative NanoScience Institute, Florida State University, Tallahassee, FL 32306, United States
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25
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Cheng Y, Xiong P, Yun CS, Strouse G, Zheng J, Yang R, Wang Z. Mechanism and optimization of pH sensing using SnO2 nanobelt field effect transistors. Nano Lett 2008; 8:4179-84. [PMID: 19367840 PMCID: PMC2771949 DOI: 10.1021/nl801696b] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We report a systematic investigation about the mechanism of pH sensing using SnO2 nanobelt field effect transistors (FETs). The FETs, based on single SnO2 nanobelts, are channel-limited and with proper contact passivation; the pH sensing was conducted with sodium phosphate solutions through integrated microfluidics. The responses of the FET channel conductance to pH were measured at different gate voltages: a linear pH dependence was observed in the linear transport "on" state, while an exponential dependence was observed in the subthreshold regime. Measurements at the same pH but different ion concentrations demonstrated that the FET's pH sensitivity decreases logarithmically with the ion concentration. The effect of APTES-functionalization was evaluated by comparing the pH responses of the same device with and without the surface modification. The APTES functionalization results in a slight enhancement of the pH sensitivity and a large suppression of the noise level, leading to marked improvement in the signal-to-noise ratio. The results indicate that the pH sensing is based on a screened field-effect response of the FETs to the surface protonation/deprotonation on the nanobelt. This study provides several useful guidelines for optimizing the sensor performance for chemical and biomolecular detection.
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Affiliation(s)
- Yi Cheng
- Department of Physics and Center for Materials Research and Technology, Florida State University, Tallahassee, Florida 32306
| | - P. Xiong
- Department of Physics and Center for Materials Research and Technology, Florida State University, Tallahassee, Florida 32306
| | - C. Steven Yun
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306
| | - G.F. Strouse
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306
| | - J.P. Zheng
- Department of Electrical and Computer Engineering, College of Engineering, Florida A&M University and Florida State University, Tallahassee, Florida 32310
| | - R.S. Yang
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332
| | - Z.L. Wang
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332
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26
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Wang L, Li D, Xiong P, Zhao H, Chang P, El-Naggar A, Sturgis E, Wei Q. Serologic response to HPV and the risk of head and neck cancer. EJC Suppl 2008. [DOI: 10.1016/s1359-6349(08)71849-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Xiong P, Zeng X, Song MS, Jia SW, Zhong MH, Xiao LL, Lan W, Cai C, Wu XW, Gong FL, Wang W. Lack of association between HLA-A, -B and -DRB1 alleles and the development of SARS: a cohort of 95 SARS-recovered individuals in a population of Guangdong, southern China. Int J Immunogenet 2008; 35:69-74. [PMID: 18186801 PMCID: PMC7165669 DOI: 10.1111/j.1744-313x.2007.00741.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Severe acute respiratory syndrome (SARS), caused by infection with a novel coronavirus (SARS‐CoV), was the first major novel infectious disease at the beginning of the 21st century, with China especially affected. SARS was characterized by high infectivity, morbidity and mortality, and the confined pattern of the disease spreading among the countries of South‐East and East Asia suggested the existence of susceptible factor(s) in these populations. Studies in the populations of Hong Kong and Taiwan showed an association of human leucocyte antigen (HLA) polymorphisms with the development and/or severity of SARS, respectively. The aim of the present study was to define the genotypic patterns of HLA‐A, ‐B and ‐DRB1 loci in SARS patients and a co‐resident population of Guangdong province, southern China, where the first SARS case was reported. The samples comprised 95 cases of recovered SARS patients and 403 unrelated healthy controls. HLA ‐A, ‐B and ‐DRB1 alleles were genotyped using polymerase chain reaction with sequence‐specific primers. The severity of the disease was assessed according to the history of lung infiltration, usage of assisted ventilation and occurrence of lymphocytopenia. Although the allelic frequencies of A23, A34, B60, DRB1*12 in the SARS group were slightly higher, and A33, ‐B58 and ‐B61 were lower than in the controls, no statistical significance was found when the Pc value was considered. Similarly, no association of HLA alleles with the severity of the disease was detected. Thus, variations in the major histocompatibility complex are unlikely to have contributed significantly to either the susceptibility or the severity of SARS in the population of Guangdong.
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Affiliation(s)
- P Xiong
- Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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28
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Brunet N, Mihajlović G, Xiong P, von Molnár S, Chase P. A7. Nanomechanical assays for detection of atlered protein function in cardiomyopathies. J Mol Cell Cardiol 2006. [DOI: 10.1016/j.yjmcc.2006.03.290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Zhang X, Miao X, Sun T, Tan W, Qu S, Xiong P, Zhou Y, Lin D. Functional polymorphisms in cell death pathway genes FAS and FASL contribute to risk of lung cancer. J Med Genet 2006; 42:479-84. [PMID: 15937082 PMCID: PMC1736067 DOI: 10.1136/jmg.2004.030106] [Citation(s) in RCA: 107] [Impact Index Per Article: 5.9] [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: 12/27/2022]
Abstract
BACKGROUND The FAS and FASL system plays a key role in regulating apoptotic cell death and corruption of this signalling pathway has been shown to participate in immune escape and tumorigenesis. There is reduced expression of FAS but elevated expression of FASL in many types of human cancers including lung cancer. We recently reported an association between functional polymorphisms in FAS (-1377G-->A) and FASL (-844T-->C) and risk of oesophageal cancer. OBJECTIVE To examine the contribution of these polymorphisms to risk of developing lung cancer. METHODS Genotypes of 1000 lung cancer patients and 1270 controls were analysed by PCR based restriction fragment length polymorphism. Associations with risk of lung cancer were estimated by logistic regression. RESULTS Compared with non-carriers, there was a 1.6 fold excess risk of developing lung cancer for carriers of the FAS -1377AA genotype (odds ratio (OR) 1.59, 95% confidence interval (CI) 1.21 to 2.10; p = 0.001), and 1.8 fold excess risk (OR 1.79, 95% CI 1.26 to 2.52; p = 0.001) for carriers of FASL -844CC. Gene-gene interaction of FAS and FASL polymorphisms increased risk of lung cancer in a multiplicative manner (OR for the carriers of both FAS -1377AA and FASL -844CC genotypes 4.18, 95% CI 2.83 to 6.18). Gene-environment interaction of FAS or FASL polymorphism and smoking associated with increased risk of lung cancer was also found. CONCLUSION These results are consistent with our initial findings in oesophageal cancer and further support the hypothesis that the FAS and FASL triggered apoptosis pathway plays an important role in human carcinogenesis.
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Affiliation(s)
- X Zhang
- Department of Etiology and Carcinogenesis, Cancer Institute, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Abstract
UNLABELLED The pig may be used as an alternative organ donor source in the future. The Wuzhishan miniature pig (WZSP) is a Chinese inbred mini pig with the highest inbreeding coefficient and has been used in many biologic experiments. We studied the classical MHC molecules of WZSP to confirm its pure gene background and to provide information for xenotransplantation. METHODS The classical class I (P1 and P14) and class II (DQA, DQB, DRA, and DRB) molecules were studied using RT-PCR. The products were cloned into a pGEM-T vector, respectively, sequenced and compared with related data for homology analysis. RESULTS WZSP is highly homologous (>90%) with NIH miniature swine for class I and class II molecules amino acids in alpha-3 domain responsible for the binding of human T-cell CD8 were largely conserved; only two critical residues were altered. The critical residues of class I molecules recognized by human natural killer (NK) cells were completely different from humans. Furthermore, new class II molecules were homologous (>70%) with the Chinese south population in amino acids. The amino acids for binding to human CD4 were identical in DRB and showed only two differences in DRA. CONCLUSIONS WZSP bears new alleles in porcine MHC-relevant loci. We might alter residues of class I molecules to avoid killing by human NK cells. The striking similarities of DRB would make WZSP less likely in compatible in xeno-rejection. We can also alter the two residues of the DRA sequence to make WZSP a better model for xenotransplant research in China.
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Affiliation(s)
- Q Wu
- Institute of Organ Transplantation, Key Laboratory appointed by China Ministry of Education and China Ministry of Health, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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31
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Braden JG, Parker JS, Xiong P, Chun SH, Samarth N. Direct measurement of the spin polarization of the magnetic semiconductor (Ga,Mn)As. Phys Rev Lett 2003; 91:056602. [PMID: 12906617 DOI: 10.1103/physrevlett.91.056602] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2003] [Indexed: 05/24/2023]
Abstract
We have carried out a direct measurement of the degree of spin polarization (P) of the magnetic semiconductor Ga1-xMnxAs using Andreev reflection spectroscopy. Analyses of the conductance spectra of high transparency Ga(0.95)Mn(0.05)As/Ga junctions consistently yield an intrinsic value for P greater than 85%. Our experiments also revealed an extreme sensitivity of the measured spin polarization to the nature and quality of the interface for this material.
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Affiliation(s)
- J G Braden
- MARTECH and Department of Physics, Florida State University, Tallahassee, Florida 32306, USA
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32
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Huang YF, Wang W, Han JY, Wu XW, Zhang ST, Liu CJ, Hu QG, Xiong P, Hamvas RMJ, Wood N, Gong FL, Bittles AH. Increased frequency of the mannose-binding lectin LX haplotype in Chinese systemic lupus erythematosus patients. Eur J Immunogenet 2003; 30:121-4. [PMID: 12648279 DOI: 10.1046/j.1365-2370.2003.00370.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Mannose-binding lectin (MBL) is an important complement-activating protein of the human immune system. As a result of one of three structural gene mutations in exon 1 (variants B, C and D) and/or the presence of a low-efficiency promoter polymorphism, MBL deficiency may be associated with increased susceptibility to infectious diseases and to autoimmune disorders, including systemic lupus erythematosus (SLE). Using a combined approach of heteroduplex generator and polymerase chain reaction, a systematic search for mutations in exon 1 and the promoter region of the MBL gene was performed in a Chinese study population comprising 41 SLE patients and 111 healthy controls. Two alleles, a wild-type allele A and a variant allele B (a previously reported mutation of GGC to GAC at codon 54), were identified in MBL exon 1. The frequency of the B allele (0.15) was higher in the SLE patients than in the healthy controls (0.09), but the difference did not attain statistical significance (P > 0.05). However, for two polymorphisms at positions -550 and -221 in the promoter region, the frequency of the low-MBL-producing haplotype (LX) in the patients (0.2073) was significantly higher than that in the controls (0.0855) (P = 0.003, relative risk = 2.79). Our results suggest that the LX haplotype represents a strong risk factor among Chinese SLE patients. Although of lesser importance, the MBL B allele also may be a risk component in the developing process of SLE in Chinese patients.
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Affiliation(s)
- Y F Huang
- Institute of Immunology, Tonji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Wu Q, Xiong P, Gong FL, Liu J, Chen S. Different results in polymorphism analyses of SLA class I molecules between two xenotransplantation models. Transplant Proc 2003; 35:536-7. [PMID: 12591521 DOI: 10.1016/s0041-1345(02)03920-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Q Wu
- Department of Immunology, Wuhan University, Wuhan, China
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34
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Parker JS, Watts SM, Ivanov PG, Xiong P. Spin polarization of CrO2 at and across an artificial barrier. Phys Rev Lett 2002; 88:196601. [PMID: 12005656 DOI: 10.1103/physrevlett.88.196601] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2002] [Indexed: 05/23/2023]
Abstract
We report a systematic study of the spin polarization of epitaxial CrO2 films at and across an interface using planar junctions with a superconducting counterelectrode. By chemical modification of the CrO2 surface before the deposition of the superconductor, junctions with a wide range of barrier strength were obtained. Analysis of the conductance data on these junctions, especially under Zeeman splitting of the superconducting density of states, yields consistent, close to full spin polarization for CrO2 regardless of the barrier strength.
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Affiliation(s)
- J S Parker
- Department of Physics and Center for Materials Research and Technology (MARTECH), Florida State University, Tallahassee, Florida 32306, USA
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35
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Xiong P, Bondy ML, Li D, Shen H, Wang LE, Singletary SE, Spitz MR, Wei Q. Sensitivity to benzo(a)pyrene diol-epoxide associated with risk of breast cancer in young women and modulation by glutathione S-transferase polymorphisms: a case-control study. Cancer Res 2001; 61:8465-9. [PMID: 11731429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
Mounting epidemiological evidence suggests that smoking may play a role in the etiology of breast cancer. Because smoking-related DNA adducts are detectable in both normal and malignant breast tissues, we hypothesized that breast cancer patients may be sensitive to tobacco-induced carcinogenesis, and this sensitivity could be modulated by variants of metabolic genes. To test this hypothesis, we evaluated benzo(a)pyrene diol-epoxide (BPDE)-induced mutagen sensitivity and polymorphisms of GSTM1 and GSTT1 in a pilot case-control study of breast cancer. Short-term cell cultures were established from blood samples of 100 female breast cancer patients and 105 healthy controls. After 5 h of in vitro exposure to 4 microM of BPDE, we harvested the lymphocytes for cytogenetic evaluation and recorded and compared the frequency of BPDE-induced chromatid breaks between cases and controls. We used a multiplex PCR-based assay to simultaneously detect polymorphisms of GSTM1 and GSTT1 from genomic DNA. We performed univariate and multivariate logistic regression analyses and calculated odds ratios (OR) and 95% confidence intervals (CIs). Cases had a significantly higher frequency of chromatid breaks than did controls (P < 0.0001). The level of chromatid breaks greater than the median value of controls was associated with a >3-fold increased risk of breast cancer [adjusted odds ratio (ORadj) = 3.11; 95% CI = 1.72-5.64]. The risk was more pronounced in those who were < 45 years (ORadj = 4.79; 95% CI = 1.87-12.3), ever-smokers (ORadj = 5.55; 95% CI = 1.85-16.6), alcohol drinkers (ORadj = 4.64; 95% CI = 1.70-12.7), and those who had the GSTT1 null variant (ORadj = 8.01; 95% CI = 1.16-55.3). These data suggest that sensitivity to BPDE-induced chromosomal aberrations may contribute to the risk of developing breast cancer, and such sensitivity may be modulated by both genetic and environmental factors. Larger studies are needed to confirm our findings.
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Affiliation(s)
- P Xiong
- Department of Epidemiology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030, USA
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36
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Ran X, Zhang L, Xiong P, Zhao T, Tong N, Li X. [Gigantism with low serum level of growth hormone: a case report]. Hua Xi Yi Ke Da Xue Xue Bao 2001; 32:621-3. [PMID: 12528568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
Gigantism with low or normal basal concentrations of growth hormone (GH) is a rare condition, possibly due to abnormal GH secretory patterns, enhanced tissue sensitivity to GH, or the existence of an unidentified growth promoting factor. Here we report an 11 year-old female case of gigantism with a normal pituitary gland. Her height was 181 cm, body weight 77 kg, and bone age 11.1 years. Her basal serum GH levels were lower than 1 ng/ml. The levels of T3, T4, FT3, FT4, TSH, E2, LH, FSH, PRL, PTC and ACTH were normal. Serum GH response to insulin-induced hypoglycemia or arginine stimulation tests was blunted. In this case, non-pulsatile GH secretion and enhanced tissue sensitivity to GH may induce hypersecretion of IGF-1 and the existence of an unidentified growth promoting factor or biologically active anti-GH receptor antibodies may cause clinical gigantism.
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Affiliation(s)
- X Ran
- Endocrinology/Internal Medicine, First Affiliated Hospital, WCUMS, Chengdu 610041, China
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37
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Zhang WJ, Xiong P, Liu SC, Xia SS. Xenoreactivity of human natural antibodies with various porcine pancreatic cells. Transplant Proc 2001; 33:3865-6. [PMID: 11750646 DOI: 10.1016/s0041-1345(01)02638-0] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- W J Zhang
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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38
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Li D, Firozi PF, Chang P, Wang LE, Xiong P, Sturgis EM, Eicher SA, Spitz MR, Hong WK, Wei Q. In vitro BPDE-induced DNA adducts in peripheral lymphocytes as a risk factor for squamous cell carcinoma of the head and neck. Int J Cancer 2001; 93:436-40. [PMID: 11433411 DOI: 10.1002/ijc.1347] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The level of DNA adducts under the same conditions of carcinogen exposure and cell proliferation reflects an integrated measure of carcinogen metabolism and DNA repair. Therefore, such DNA adduct levels have the potential to be a biomarker for susceptibility to chemical carcinogenesis. In a pilot study of 91 patients with squamous cell carcinomas of the head and neck and 115 controls who were frequency matched by age, sex, ethnicity, and smoking status, we applied a newly developed in vitro assay of benzo[a]pyrene diol epoxide (BPDE)-induced DNA adducts in short-term peripheral lymphocytes cultures. Levels of BPDE-DNA adducts were found to be significantly higher in cases than in controls (mean +/- SD, 76.8 +/- 77.4/10(7) and 47.1 +/- 48.0/10(7) nucleotides, respectively; p < 0.001). Using the median level of control values (35/10(7)) as the cut-off point, about 66% of cases were distributed above this level. Logistic regression analysis revealed that the level of BPDE-induced DNA adducts was an independent risk factor (odds ratio = 2.22; 95% confidence interval = 1.22--4.04) after adjustment for age, sex and smoking status. Further stratified analyses showed that levels of the induced adducts between cases and controls were significantly higher in both age groups, that is, younger or older than 60, as well as in both men and women. Smoking had a positive effect on the induced adducts. The highest level of induced adducts was seen in current smokers, then former smokers and non-smokers. There was a statistically significant dose--response relationship between the quartile levels of BPDE-induced DNA adducts and the risk of head and neck cancer (trend test, p = 0.003). Despite the relatively small sample size, the association of BPDE-induced DNA adducts and cancer risk suggests that this assay has the potential to complement with other biomarkers in identifying individuals at increased risk of developing tobacco-related cancers.
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MESH Headings
- 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide/metabolism
- 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide/pharmacology
- Biomarkers
- Carcinogens/pharmacology
- Carcinoma, Squamous Cell/etiology
- Carcinoma, Squamous Cell/metabolism
- Case-Control Studies
- Cells, Cultured
- DNA Adducts/drug effects
- DNA Adducts/metabolism
- DNA Repair
- DNA, Neoplasm/drug effects
- Disease Susceptibility
- Female
- Head and Neck Neoplasms/etiology
- Head and Neck Neoplasms/metabolism
- Humans
- Lymphocytes/metabolism
- Male
- Middle Aged
- Risk Factors
- Smoking/adverse effects
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Affiliation(s)
- D Li
- Department of Gastrointestinal Medical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, USA.
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39
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Abstract
The reactivity of human preformed natural antibodies (PNAbs) with various porcine pancreatic cells and its isotypes was investigated. Eighteen serum samples from patients with insulin-dependent diabetes mellitus (IDDM) and 20 serum samples from healthy human subjects were collected. The frozen sections of the pig pancreas were incubated with these sera, and subsequently incubated with FITC-conjugated goat antihuman IgG and IgM monoclonal antibodies. The reactivity of human PNAbs with various porcine pancreatic cells was determined by indirect immunofluorescence staining technique. The results showed that 55.6% of IDDM patients and 55.0% of healthy human individuals contained PNAbs against porcine endocrine cells. However, the percentage of strongly reacting sera in the patient group was significantly increased as compared with that in the control group. All used sera from IDDM patients and 95% of sera from healthy controls could react to one or more of the various pancreatic cell types, including: endocrine cells, exocrine cells, vascular endothelial cells, ductal epithelial cells and macrophages. The isotypes of PNAbs contained both IgG and IgM. In view of strongly positive reactivity of PNAbs with various porcine pancreatic cells, pretransplantly cross-matching test and graft pretreatment may be necessary for survival of islet transplants.
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Affiliation(s)
- W Zhang
- Institute of Organ Transplantation, Tongji Hospital, Wuhan
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40
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Hao Y, Wu X, Liang Z, Xiong P, Jiang X, Gong F. Establishment of in vitro cellular model predicting histocompatibility in allograft. Curr Med Sci 2001; 21:277-9. [PMID: 12539546 DOI: 10.1007/bf02886555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2000] [Indexed: 10/19/2022]
Abstract
A novel in vitro cellular model producting recipient-donor histocompatibility in allograft was developed to select the donor validity. Fifteen couples of blood samples of donor and recipient in human BMT were examined using the model, and skin allograft in mice was performed to test the model. The results showed that the less the differences of histocompatibility evaluated by the model were, the later GVHR in human BMT occurred and the longer the survival time of skin allografts in mice. It was suggested that the model could be used to predict correctly histocompatibility between donor and recipient.
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Affiliation(s)
- Y Hao
- Department of Immunology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030
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41
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Guo P, Yi G, Xiong P, Yuan Y, Xie Q, Chen C. [Raman spectra of the serums from cancerous persons]. Guang Pu Xue Yu Guang Pu Fen Xi 2000; 20:844-846. [PMID: 12938490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The serums of different categories, those who are normal people and those who are patient suffering from nasopharyngeal cancer, liver cancer and chronic leukaemia, were determined by laser Raman spectra at the range of 0-2,000 cm-1. The results demonstrated that the serums of those who are suffering from the same disease show different characteristic peak height, but their Raman spectrogram characteristics are almost the same. There exists great difference in the laser Raman spectrogram for the serums of the different kinds of cancerous patients. Near the characteristic peaks of laser Raman spectrograms of serums from the cancerous patients, the normal person's serum has no Raman spectrogram characteristic peak.
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Affiliation(s)
- P Guo
- Department of Physics, Hengyang Medical College, 421001 Hengyang
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42
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Raquet B, Anane A, Wirth S, Xiong P. Noise probe of the dynamic phase separation in La(2/3)Ca(1/3)MnO3. Phys Rev Lett 2000; 84:4485-4488. [PMID: 10990717 DOI: 10.1103/physrevlett.84.4485] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2000] [Indexed: 05/23/2023]
Abstract
Giant random telegraph noise (RTN) in the resistance fluctuation of a macroscopic film of perovskite-type manganese oxide La(2/3)Ca(1/3)MnO3 has been observed at various temperatures ranging from 4 to 170 K, well below the Curie temperature ( T(C) approximately 210 K). The amplitudes of the two-level fluctuations vary from 0.01% to 0.2%. We discuss the origin of the RTN to be a dynamic mixed-phase percolative conduction process, where manganese clusters switch back and forth between two phases that differ in their conductivity and magnetization.
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Affiliation(s)
- B Raquet
- MARTECH, Florida State University, Tallahassee, Florida 32306-4351, USA
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43
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Gong F, Xiong P, Yang Z, Xu Y, Jiang X, Wu X, Liu M, Fong W, Ferencik S, Liu J, Grosse-Wilde H. [An investigation of the polymorphism of HLA class II alleles in the Han population in Hubei Province of China]. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 1999; 16:216-9. [PMID: 10431045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
OBJECTIVE To investigate the polymorphism of HLA class II alleles in the Han population in Hubei province. METHODS The alleles of DRB1*(n=168), DQB1*(n=160) and DPB1*(n=93) were typed by using the polymerase chain reaction/sequence specific primer(PCR/SSP) and polymerase chain reaction/restriction fragment length polymorphism (PCR/RFLP) techniques. RESULTS 39 HLA-DRB1, 15 DQB1 and 17 DPB1 alleles were found. Alleles with higher frequencies are DRB1*0901 (GF=14%), *1501(GF=11.3%), *0301(GF=7.1%), *0803(GF=4.8%); DQB1*0301(GF=18.8%), *0303(GF=18.4%), *0201(GF=10%), *0302(GF=8.4%); DPB1*0501(GF=31.2%), *0401(GF=15.1%), *0201(GF=14%), *0402(GF=11.8%), respectively. As compared with Caucasians, the Han people in Hubei province have higher gene frequencies of DRB1*0901, *1001, *0803; DQB1*0303, *0502 and DPB1*0501, *0202; and lower gene frequencies of DRB1*0301, *0401, *1301; DQB1*0201, *0603 and DPB1*0401, suggesting that Hubei Hans have their own layout of HLA class II allele frequencies. CONCLUSION These data may serve as normal reference values for the Han population in south China.
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Affiliation(s)
- F Gong
- Department of Immunology, Tongji Medical University, Wuhan, 430030 P. R.China.
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44
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Herzog AV, Xiong P, Sharifi F, Dynes RC. Observation of a discontinuous transition from strong to weak localization in 1D granular metal wires. Phys Rev Lett 1996; 76:668-671. [PMID: 10061517 DOI: 10.1103/physrevlett.76.668] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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45
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Xiong P, Herzog AV, Dynes RC. Superconductivity in ultrathin quench-condensed Pb/Sb and Pb/Ge multilayers. Phys Rev B Condens Matter 1995; 52:3795-3801. [PMID: 9981511 DOI: 10.1103/physrevb.52.3795] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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46
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Xiong P, Xiao G, Laibowitz RB. Subgap and above-gap differential resistance anomalies in superconductor-normal-metal microjunctions. Phys Rev Lett 1993; 71:1907-1910. [PMID: 10054530 DOI: 10.1103/physrevlett.71.1907] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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47
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Wang JQ, Xiong P, Xiao G. Investigation of giant magnetoresistance in magnetic, concentrated, nanostructured alloys. Phys Rev B Condens Matter 1993; 47:8341-8344. [PMID: 10004862 DOI: 10.1103/physrevb.47.8341] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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48
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Xiong P, Xiao G, Wu XD. Hall angle in YBa2Cu3O7- delta epitaxial films: Comparison between oxygen reduction and Pr doping. Phys Rev B Condens Matter 1993; 47:5516-5519. [PMID: 10006734 DOI: 10.1103/physrevb.47.5516] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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49
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Xiong P, Xiao G, Wang JQ, Xiao JQ, Jiang JS, Chien CL. Extraordinary Hall effect and giant magnetoresistance in the granular Co-Ag system. Phys Rev Lett 1992; 69:3220-3223. [PMID: 10046761 DOI: 10.1103/physrevlett.69.3220] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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50
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Xiao G, Xiong P, Cieplak MZ. Universal Hall effect in La1.85Sr0.15Cu1-xAxO4 systems (A=Fe,Co,Ni,Zn,Ga). Phys Rev B Condens Matter 1992; 46:8687-8690. [PMID: 10002654 DOI: 10.1103/physrevb.46.8687] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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