1
|
Yu BY, Hu XM, Matala R, Mo YH, Liu JL, Jin JG, Zhang SH, Ou YQ, Yang Y, Dong HJ. Association between trajectories of systolic blood pressure and frailty outcome in middle-aged and older adults. J Nutr Health Aging 2024; 28:100202. [PMID: 38460319 DOI: 10.1016/j.jnha.2024.100202] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 02/06/2024] [Accepted: 02/11/2024] [Indexed: 03/11/2024]
Abstract
OBJECTIVES The association between blood pressure and frailty outcome in the middle-aged and older population remains controversial. This study aimed to examine the relationship between trajectories of systolic blood pressure (SBP) and new-onset frailty. DESIGN Cohort study with a 7-year follow-up. SETTING AND PARTICIPANTS Data were derived from 4 waves (2011, 2013, 2015 and 2018) of the China Health and Retirement Longitudinal Study and 6168 participants aged ≥45 years were included in the study. METHODS The frailty index (FI) was constructed based on 40 scored items, with FI ≥ 0.25 defined as frailty. We identified the 5-year trajectory of SBP by latent class trajectory modeling. The association between SBP trajectories and frailty was explored based on hazard ratios (HR) by four Cox proportional hazards models. Furthermore, we also investigated the relationship between mean SBP and systolic blood pressure variability (SBPV) and frailty. RESULTS 6168 participants were included in this study with a mean age of 59 years. We identified five trajectories based on SBP, which are maintained low-stable SBP (T0), moderate-stable SBP (T1), remitting then increasing SBP (T2), increasing then remitting SBP (T3), and remaining stable at high SBP levels (T4). During the 7-year follow-up period, frailty outcome occurred in 1415 participants. After adjusting for other confounders, the two trajectories labeled "T2" and "T4" were associated with a higher risk of frailty compared with T0. In addition, elevated SBP and increased SBPV were associated with risk of frailty. CONCLUSIONS Higher risk of frailty occurred in two trajectories, remitting then increasing and remaining stable at high SBP levels, were associated with a relatively higher risk of frailty.
Collapse
Affiliation(s)
- B Y Yu
- Department of Cardiology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, China
| | - X M Hu
- Department of Cardiology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, China
| | - R Matala
- Department of Environmental Health Sciences and Epidemiology and Biostatistics, University at Albany, One University Place, Rensselaer, NY, 12144
| | - Y H Mo
- Department of Cardiology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, China
| | - J L Liu
- Department of Cardiology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, China
| | - J G Jin
- Department of Cardiology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, China
| | - S H Zhang
- Department of Cardiology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, China
| | - Y Q Ou
- Department of Cardiology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, China
| | - Y Yang
- Department of Cardiology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, China.
| | - H J Dong
- Department of Cardiology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, China; Nyingchi People's Hospital, Nyingchi, 860000, Tibet, China.
| |
Collapse
|
2
|
Dong HJ, Wang R, Wang X, Liu J, Pu BZX, Li J, Mo YJ, Fu M, Li G, Luo JF. [Simultaneous transcatheter aortic valve replacement and mitral balloon dilatation in patients with severe aortic stenosis and mitral stenosis: two case reports]. Zhonghua Xin Xue Guan Bing Za Zhi 2023; 51:1082-1086. [PMID: 37859362 DOI: 10.3760/cma.j.cn112148-20230808-00062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Affiliation(s)
- H J Dong
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - R Wang
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - X Wang
- Department of Cardiology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, China
| | - J Liu
- Department of Cardiac Surgery, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - B Z X Pu
- Nyingchi People's Hospital, Nyingchi 850400, China
| | - J Li
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - Y J Mo
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - M Fu
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - G Li
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - J F Luo
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| |
Collapse
|
3
|
Li J, Sun YH, Li G, Fu M, Mo YJ, Zheng SN, Dong HJ, Fan RX, Luo JF. [Transcarotid transcatheter aortic valve replacement for pure aortic regurgitation: a case report]. Zhonghua Xin Xue Guan Bing Za Zhi 2021; 49:1240-1243. [PMID: 34905904 DOI: 10.3760/cma.j.cn112148-20201231-01026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- J Li
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - Y H Sun
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - G Li
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - M Fu
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - Y J Mo
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - S N Zheng
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - H J Dong
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - R X Fan
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - J F Luo
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| |
Collapse
|
4
|
Jia LP, Zhao LQ, Zhou L, Liu LY, Dong HJ, Zhu RN, Qian Y. [Molecular epidemiology of norovirus associated with pediatric acute gastroenteritis in Beijing in 2020]. Zhonghua Er Ke Za Zhi 2021; 59:645-650. [PMID: 34333916 DOI: 10.3760/cma.j.cn112140-20210525-00451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the molecular epidemiology of norovirus associated with pediatric acute gastroenteritis in Beijing under the Working Mechanism for Joint Prevention and Control of the Epidemic in 2020. Methods: This was a retrospective, repeated cross-sectional study. Fecal or vomit samples (1 213 cases) were collected from children visited the Capital Institute of Pediatrics Affiliated Children's Hospital for acute gastroenteritis from January 1 to December 31, 2020. First, real-time reverse PCR (RT-PCR) was used to screen the samples for norovirus, and then RdRp gene and capsid gene VP1 of norovirus-positive samples were amplified by conventional RT-PCR for genotyping based on the nucleotide sequence. The χ2 test was used to compare the positive rates and genotypes of norovirus among different specimen types, genders of children, and different age groups. Results: Among the 1 213 samples were collected, 215 samples were positive for norovirus, with a positivity rate of 17.7% for the whole year. The peak of norovirus infection observed mainly in the cold seasons, as the positive rates were 28.6% (18/63), 26.2% (16/61), 22.8% (77/338) and 17.1% (89/520) in January, October, November and December, respectively. The positive rate of norovirus in fecal sample was significantly higher than that in vomit sample (χ2 = 9.692, P<0.01). There was no significant difference between genders (χ2=0.041, P>0.05), but significant difference was found between age groups with the highest rate in the 6-48 months group (χ²=103.112, P<0.01). Three genogroups (GⅠ, GⅡ and GⅨ) of the circulating virus were detected by G-gene typing, and GⅡgenogroup was predominant, accounting for 98.5% (196/199). Among the GⅡ positive samples, genotype GⅡ.4 Sydney (55.1%, 108/196) was the most common, followed by GⅡ.2 (29.6%, 58/196), while the GⅡ.3 norovirus (10.2%, 20/196) which was common in previous years was not as much as before. Based on the P-type, GⅡ.P16 was predominant (61.5%, 96/156), followed by GII.P31 (19.9%, 31/156). The dual genotyping revealed that GⅡ.4 Sydney [P16] (36.4%, 56/154) and GⅡ.2 [P16] (24.7%, 38/154) were predominant. Conclusion: The prevalence of norovirus in children in 2020 in Beijing is not much different from those of the previous years, but the genotypes composition has changed significantly, and there are multiple genotypes circulating simultaneously.
Collapse
Affiliation(s)
- L P Jia
- Laboratory of Virology, Beijing Key Laboratory of Etiology of Viral Diseases in Children, Capital Institute of Pediatrics, Beijing 100020, China
| | - L Q Zhao
- Laboratory of Virology, Beijing Key Laboratory of Etiology of Viral Diseases in Children, Capital Institute of Pediatrics, Beijing 100020, China
| | - L Zhou
- Diagnostic Laboratories, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - L Y Liu
- Laboratory of Virology, Beijing Key Laboratory of Etiology of Viral Diseases in Children, Capital Institute of Pediatrics, Beijing 100020, China
| | - H J Dong
- Laboratory of Virology, Beijing Key Laboratory of Etiology of Viral Diseases in Children, Capital Institute of Pediatrics, Beijing 100020, China
| | - R N Zhu
- Laboratory of Virology, Beijing Key Laboratory of Etiology of Viral Diseases in Children, Capital Institute of Pediatrics, Beijing 100020, China
| | - Y Qian
- Laboratory of Virology, Beijing Key Laboratory of Etiology of Viral Diseases in Children, Capital Institute of Pediatrics, Beijing 100020, China
| |
Collapse
|
5
|
Zhao XF, Ye S, Ma R, Dong HJ, Fang T, Xu GZ. [Seroepidemiology of pertussis in healthy population in Ningbo, 2019]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:638-642. [PMID: 34814443 DOI: 10.3760/cma.j.cn112338-20200629-00894] [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: 06/13/2023]
Abstract
Objective: To understand the seroepidemiological characteristics of pertussis in healthy population in Ningbo, and estimate the overall incidence of pertussis. Methods: A cross-sectional survey method was used in this study. A total of 1 206 healthy residents in 9 age groups were stratified randomly selected from 3 counties of Ningbo. Serum samples were collected from the subjects, and the pertussis toxin immunoglobulin G antibody (PT-IgG) levels were measured quantitatively by enzyme-linked immunosorbent assay (ELISA). Results: The mean PT-IgG seropositive rate in the subjects was 0.91% (95%CI:0.45%-1.63%) with a geometric mean titer (GMT) of 3.10 (95%CI:2.86-3.36) IU/ml. The seropositive rates ranged from 0.00% to 1.68%, and the GMTs ranged from 2.08 IU/ml to 5.28 IU/ml in 9 age groups. The incidence rate of pertussis was estimated to be 4 572.81 per 100 000 in age group ≥5 years (95%CI:1 807.30 per 100 000-9 348.12 per 100 000), and the peak of estimated incidence rates were found in age group 5- years (9 301.62 per 100 000, 95%CI:1 121.77 per 100 000-33 154.68 per 100 000) and age group ≥50 years old (8 967.02 per 100 000, 95%CI: 1 059.45 per 100 000-31 845.94 per 100 000). Conclusions: The actual incidence of pertussis was high in Ningbo in 2019. As a result of waning immunity after vaccination, pertussis can occur in adolescents and adults. The pertussis surveillance should be strengthened and the pertussis vaccination strategy should be improved.
Collapse
Affiliation(s)
- X F Zhao
- Ningbo Prefectural Center for Disease Control and Prevention, Ningbo 315010, China
| | - S Ye
- Ningbo Prefectural Center for Disease Control and Prevention, Ningbo 315010, China
| | - R Ma
- Ningbo Prefectural Center for Disease Control and Prevention, Ningbo 315010, China
| | - H J Dong
- Ningbo Prefectural Center for Disease Control and Prevention, Ningbo 315010, China
| | - T Fang
- Ningbo Prefectural Center for Disease Control and Prevention, Ningbo 315010, China
| | - G Z Xu
- Ningbo Prefectural Center for Disease Control and Prevention, Ningbo 315010, China
| |
Collapse
|
6
|
Li X, Wang Y, Chang X, Gao L, Peng L, Bai H, Dong HJ. Expression of Elicitin Response Protein plus Alpha-Chemokines in Lung Cancer. Indian J Pharm Sci 2021. [DOI: 10.36468/pharmaceutical-sciences.spl.310] [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: 11/22/2022] Open
|
7
|
Li J, Sun YH, Li G, Fu M, Mo YJ, Zheng SN, Dong HJ, Fan RX, Luo JF. [Midterm outcome comparison between patients with bicuspid or tricuspid aortic stenosis undergoing transcatheter aortic valve replacement]. Zhonghua Xin Xue Guan Bing Za Zhi 2020; 48:759-764. [PMID: 32957759 DOI: 10.3760/cma.j.cn112148-20200803-00613] [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 compare the prognosis of transcatheter aortic valve replacement (TAVR) in patients with bicuspid aortic valve (BAV) or tricuspid aortic valve (TAV) stenosis. Methods: This was a retrospective study. Patients with symptomatic severe aortic stenosis, who underwent TAVR with follow-up time more than one year in Guangdong Provincial People's Hospital from April 2016 to August 2018, were included. According to aortic CT angiography, the patients were divided into BAV group and TAV group. The primary endpoint was the composite event of all-cause death and stroke, and the secondary endpoints were TAVR-related complications. Incidence of clinical endpoints and parameters derived from echocardiography were compared between the groups, and Kaplan-Meier survival analysis was used to compare the composite event between the two groups. Results: A total of 49 patients were included. The age was (73.6±6.3) years, and 25(51.0%) were male. There were 32 patients in BAV group and 17 in TAV group, the follow-up time was 466 (390, 664) days. The incidence of composite endpoint of death and stroke at one year were comparable in BAV and TAV groups (6.3% (2/32) vs. 5.9% (1/17), P=1.00). Kaplan-Meier curves also showed a similar risk of the composite endpoint(HR=1.03,95%CI 0.09-11.24,Log-rank P=0.98) between two groups. The incidence of all-cause death, stroke, myocardial infarction, severe bleeding, major vascular complications, new-onset atrial fibrillation or atrial flutter, and permanent pacemaker implantation were all similar between the two groups(all P>0.05), and there was no acute kidney injury (stage 2 or 3) in both groups. Echocardiographic parameters at one year were similar between the two groups (all P>0.05). Conclusions: The midterm prognosis of TAVR in patients with BAV and TAV stenosis is similar. Clinical trials of large sample size with long-term follow-up are warranted to verify our findings.
Collapse
Affiliation(s)
- J Li
- Department of Vascular Center, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - Y H Sun
- Department of Vascular Center, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - G Li
- Department of Vascular Center, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - M Fu
- Department of Vascular Center, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - Y J Mo
- Department of Vascular Center, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - S N Zheng
- Department of Vascular Center, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - H J Dong
- Department of Vascular Center, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - R X Fan
- Department of Vascular Center, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - J F Luo
- Department of Vascular Center, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| |
Collapse
|
8
|
Hong H, Shi HB, Jiang HB, Gu XM, Sun FY, Dong HJ. [Relations between high risk sexual behavior and HIV infection among men who have sex with men in ways of meeting male partners]. Zhonghua Liu Xing Bing Xue Za Zhi 2020; 40:1612-1617. [PMID: 32062925 DOI: 10.3760/cma.j.issn.0254-6450.2019.12.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the relations between high risk sexual behavior and HIV infection among MSM in ways of finding male partners in Ningbo. Methods: A cross-sectional study was conducted in Ningbo between April and November in 2018. Data related to socio-demographics, ways of finding male partners, adoption of gay apps and sexual behaviors were collected by snowball method. Blood samples were drawn for HIV antibody testing. Classified data was evaluated by chi-square test. Related factors on HIV infection were analyzed by multivariate logistic regression. Results: A total of 735 participants were included in this study. Ways of finding male partners would through gay apps (60.8%, 447/735), QQ/Wechat (32.3%, 237/735) and gay-places (6.9%, 51/735). Related information on high risk sexual behavior and HIV infection among gay apps users were found as: 16.8%(75) had sexual behavior once per week in the past 6 months, 41.8% (187/447) had multiple sexual partners, 12.1% (54/447) had unprotected anal intercourse in the last time, 52.3% (234/447) having had unprotected anal intercourse in the past 6 months. The overall HIV prevalence rate was 12.1%(54/447). Among the HIV cases who got infected within the two years, 68.6%(24/35) of them had used gay apps for less than two years. Results from the, multivariate logistic regression analysis showed that gay apps users were more susceptible to infected HIV than those who used the QQ/Wechat (OR=3.03, 95%CI: 1.30-7.07). Conclusions: Gay apps was popularly known among the Ningbo MSM, and was associated with the high risk sexual behaviors and HIV infection. HIV control and prevention programs should be strengthened in the MSM population who used the gay apps. Related surveillance and intervention programs for MSM, who use the gay apps, need to be further reinforced.
Collapse
Affiliation(s)
- H Hong
- Institute for AIDS/STD Control and Prevention, Ningbo Municipal Center for Disease Control and Prevention, Ningbo 315010, China
| | - H B Shi
- Institute for AIDS/STD Control and Prevention, Ningbo Municipal Center for Disease Control and Prevention, Ningbo 315010, China
| | - H B Jiang
- Institute for AIDS/STD Control and Prevention, Ningbo Municipal Center for Disease Control and Prevention, Ningbo 315010, China
| | - X M Gu
- Institute for AIDS/STD Control and Prevention, Ningbo Municipal Center for Disease Control and Prevention, Ningbo 315010, China
| | - F Y Sun
- Department of Acute Infectious Disease, Hwa Mei Hospital University of Chinese Academy of Science, Ningbo 315010, China
| | - H J Dong
- Institute for AIDS/STD Control and Prevention, Ningbo Municipal Center for Disease Control and Prevention, Ningbo 315010, China
| |
Collapse
|
9
|
Li ZL, Dong HJ, Song XG, Zhao HY, Tian H, Liu JH, Feng JC, Yan JC. Homogeneous (Cu, Ni) 6Sn 5 intermetallic compound joints rapidly formed in asymmetrical Ni/Sn/Cu system using ultrasound-induced transient liquid phase soldering process. Ultrason Sonochem 2018; 42:403-410. [PMID: 29429685 DOI: 10.1016/j.ultsonch.2017.12.005] [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] [Received: 10/18/2017] [Revised: 12/03/2017] [Accepted: 12/04/2017] [Indexed: 06/08/2023]
Abstract
Homogeneous (Cu, Ni)6Sn5 intermetallic compound (IMC) joints were rapidly formed in asymmetrical Ni/Sn/Cu system by an ultrasound-induced transient liquid phase (TLP) soldering process. In the traditional TLP soldering process, the intermetallic joints formed in Ni/Sn/Cu system consisted of major (Cu, Ni)6Sn5 and minor Cu3Sn IMCs, and the grain morphology of (Cu, Ni)6Sn5 IMCs subsequently exhibited fine rounded, needlelike and coarse rounded shapes from the Ni side to the Cu side, which was highly in accordance with the Ni concentration gradient across the joints. However, in the ultrasound-induced TLP soldering process, the intermetallic joints formed in Ni/Sn/Cu system only consisted of the (Cu, Ni)6Sn5 IMCs which exhibited an uniform grain morphology of rounded shape with a remarkably narrowed Ni concentration gradient. The ultrasound-induced homogeneous intermetallic joints exhibited higher shear strength (61.6 MPa) than the traditional heterogeneous intermetallic joints (49.8 MPa).
Collapse
Affiliation(s)
- Z L Li
- Shandong Provincial Key Lab of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China
| | - H J Dong
- Shandong Provincial Key Lab of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China
| | - X G Song
- Shandong Provincial Key Lab of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China; State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China.
| | - H Y Zhao
- Shandong Provincial Key Lab of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China; State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
| | - H Tian
- Shandong Provincial Key Lab of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China
| | - J H Liu
- Shandong Provincial Key Lab of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China
| | - J C Feng
- Shandong Provincial Key Lab of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China; State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
| | - J C Yan
- Shandong Provincial Key Lab of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China
| |
Collapse
|
10
|
Lin SZ, Dong HJ, Sun JP. [Expanding test and normalization for HIV/AIDS prevention and control]. Zhonghua Yu Fang Yi Xue Za Zhi 2017; 50:929-931. [PMID: 27903351 DOI: 10.3760/cma.j.issn.0253-9624.2016.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Expanding real-name HIV test is the basis of the real-time reporting system in China, and it plays an important role for the progress. In year of 2003, there were 45 092 cases of HIV positives reported cumulatively, which accounted for only 5.4% of the estimated population of HIV positives. Since implementation of real-name HIV test and establishment, real-time reporting system, up to year 2005, the total of reported HIV positives was 577 000, which took up 67.9% of the estimated HIV positives. Also among reported cases, 387 000 cases have received the anti-retroviral treatment. Normalization of HIV prevention and control will pave the way to medical insurance for HIV positives. It is a goal that all the people have medical insurance in China, and the normalization is an ideal working condition, and real-name HIV test is a measure for it. The both are very closely connected and improving each anther.
Collapse
Affiliation(s)
- S Z Lin
- School of Public Health, Zhejiang University, Hangzhou 310058, China
| | | | | |
Collapse
|
11
|
Li ZL, Dong HJ, Song XG, Zhao HY, Feng JC, Liu JH, Tian H, Wang SJ. Rapid formation of Ni 3Sn 4 joints for die attachment of SiC-based high temperature power devices using ultrasound-induced transient liquid phase bonding process. Ultrason Sonochem 2017; 36:420-426. [PMID: 28069229 DOI: 10.1016/j.ultsonch.2016.12.026] [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] [Received: 10/26/2016] [Revised: 12/18/2016] [Accepted: 12/18/2016] [Indexed: 06/06/2023]
Abstract
High melting point Ni3Sn4 joints for the die attachment of SiC-based high temperature power devices was successfully achieved using an ultrasound-induced transient liquid phase (TLP) bonding process within a remarkably short bonding time of 8s. The formed intermetallic joints, which are completely composed of the refined equiaxial Ni3Sn4 grains with the average diameter of 2μm, perform the average shear strength of 26.7MPa. The sonochemical effects of ultrasonic waves dominate the mechanism and kinetics of the rapid formation of Ni3Sn4 joints.
Collapse
Affiliation(s)
- Z L Li
- Shandong Provincial Key Lab of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China
| | - H J Dong
- Shandong Provincial Key Lab of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China
| | - X G Song
- Shandong Provincial Key Lab of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China; State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China.
| | - H Y Zhao
- Shandong Provincial Key Lab of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China; State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
| | - J C Feng
- Shandong Provincial Key Lab of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China; State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
| | - J H Liu
- Shandong Provincial Key Lab of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China
| | - H Tian
- Shandong Provincial Key Lab of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China
| | - S J Wang
- Shandong Provincial Key Lab of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China
| |
Collapse
|
12
|
Ke F, Zhang HB, Wang Y, Hou LF, Dong HJ, Wang ZF, Pan GW, Cao XY. Molecular cloning and characterization of a C-type lectin in yellow catfish Tachysurus fulvidraco. J Fish Biol 2016; 89:1692-1703. [PMID: 27418461 DOI: 10.1111/jfb.13080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Accepted: 06/06/2016] [Indexed: 06/06/2023]
Abstract
This study represents the first report of a C-type lectin (ctl) in yellow catfish Tachysurus fulvidraco. The complete sequence of ctl complementary (c)DNA consisted of 685 nucleotides. The open reading frame potentially encoded a protein of 177 amino acids with a calculated molecular mass of c.y 20.204 kDa. The deduced amino-acid sequence contained a signal peptide and a single carbohydrate recognition domain with four cysteine residues and GlnProAsp (QPD) and TrpAsnAsp (WND) motifs. Ctl showed the highest identity (56.0%) to the predicted lactose binding lectin from channel catfish Ictalurus punctatus. Quantitative real-time (qrt)-PCR analysis showed that ctl messenger (m)RNA was constitutively expressed in all examined tissues in normal fish, with high expression in trunk kidney and head kidney, which was increased following Aeromonas hydrophila challenge in a duration-dependent manner. Purified recombinant Ctl (rCtl) from Escherichia coli BL21 was able to bind and agglutinate Gram-positive and Gram-negative bacteria in a calcium-dependent manner. These results suggested that Ctl might be a C-type lectin of T. fulvidraco involved in innate immune responses as receptors (PRR).
Collapse
Affiliation(s)
- F Ke
- College of Life Sciences and Engineering, Henan University of Urban Construction, Pingdingshan, 467036, China
| | - H B Zhang
- College of Life Sciences and Engineering, Henan University of Urban Construction, Pingdingshan, 467036, China
| | - Y Wang
- College of Life Sciences and Engineering, Henan University of Urban Construction, Pingdingshan, 467036, China
| | - L F Hou
- College of Life Sciences and Engineering, Henan University of Urban Construction, Pingdingshan, 467036, China
| | - H J Dong
- College of Life Sciences and Engineering, Henan University of Urban Construction, Pingdingshan, 467036, China
| | - Z F Wang
- College of Life Sciences and Engineering, Henan University of Urban Construction, Pingdingshan, 467036, China
| | - G W Pan
- College of Life Sciences and Engineering, Henan University of Urban Construction, Pingdingshan, 467036, China
| | - X Y Cao
- College of Life Sciences and Engineering, Henan University of Urban Construction, Pingdingshan, 467036, China
| |
Collapse
|
13
|
Dong HJ, Wu W, Wang JH, Zhu HF, Gao S, Hou LP, Bai QX. [Acute myeloid leukemia complicated with complex karyotypes and T-lymphoblastic lymphoma: a case report]. Zhonghua Xue Ye Xue Za Zhi 2016; 37:237. [PMID: 27033763 PMCID: PMC7342941 DOI: 10.3760/cma.j.issn.0253-2727.2016.03.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
| | | | | | | | | | | | - Q X Bai
- Department of Hematology, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China
| |
Collapse
|
14
|
Zhao XF, Zhang JN, Dong HJ, Zhang T, Bian GL, Sun YW, Yao MH, Chen KJ, Xu GZ. Epidemiological characteristics of malaria in Ningbo City, China 2000-2011. Trop Biomed 2013; 30:267-276. [PMID: 23959492] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The objective of this study was to explore the trend and the epidemiological characteristics of malaria in Ningbo from 2000 through 2011 and provide scientific evidence for the prevention and control. Using the retrospective study, data relating to malaria epidemics during 2000-2011 in Ningbo were collected through the questionnaires of the cases and other important surveillance data. Adult mosquitoes were collected using CDC light traps baited with CO2. Results showed that Plasmodium vivax was the main species, and Anopheles sinensis was the only vector species of malaria. The annual incidence rates (per 100000) ranged from 0.156 to 3.224, and about 95.41% of the cases were imported. The cases occurred mainly between May and November and the incidence showed two peaks, and the local transmission of malaria was determined by vector density. Considering the vast majority of these infections were imported vivax malaria cases from domestic endemic areas (particularly Anhui province), and may lead to limited local transmission, strengthening the routine monitoring of imported malaria, ensuring timely diagnosis, improving case detection rate, giving a standardized treatment to patients and intensifying public health education on malaria prevention are extremely important to malaria prevention and control activities.
Collapse
Affiliation(s)
- X F Zhao
- Ningbo Municipal Center for Disease Control and Prevention, Ningbo, China
| | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Dong HJ, Jiang JY, Chen QL. Development of a cell immobilization technique for the conversion of polysialogangliosides to monosialotetrahexosylganglioside. Pharm Biol 2011; 49:805-809. [PMID: 21500968 DOI: 10.3109/13880209.2010.550053] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
CONTEXT Monosialotetrahexosylganglioside (GM₁) prepared from the brain of pig or bovine is an effective clinical drug in the treatment of different nervous system diseases. Generally, polysialogangliosides are transformed into GM₁ by enzymic or chemical hydrolysis due to the very poor level of natural GM₁. OBJECTIVE To continuously obtain GM₁ by cell immobilization in a packed-bed reactor. MATERIALS AND METHODS Brevibacterium casei, which is Gram-positive bacteria belonging to the order Actinomyces and family Brevibacteriaceae, can produce high-activity sialidase, are encapsulated in silk fibroin hydrogel, and subsequently packed into a reactor. The crude ganglioside is pumped into the reactor and continuously turned to GM₁. RESULTS The optimal silk fibroin concentration for hydrogel preparation is 6.0% (w/v). The optimal initial biomass for immobilization is ~12% (wet weight). The optimal conversion conditions are 35 °C and 6 mL/min of flow rate. Under above conditions, the maximum GM₁ productive strength and conversion ratio can reach to 4.2 g/L·h and 313.5%, respectively. DISCUSSION Silk fibroin is a promising material for cell immobilization because it has predominant characteristics of higher permeability and intensity. Cell immobilization for continuous GM₁ transformation could eliminate the asialo GM₁ and decrease the foreign matter from transfer medium and metabolism product. CONCLUSION In the packed-bed reactor, continuous production of GM₁ had been under effective running at least for 15 days indicating a potential for industrial production. It is significant that this is a first report on cell immobilization for GM₁ production.
Collapse
Affiliation(s)
- H J Dong
- Research and Design Center, Lunan Pharmaceutical Group Corporation, Linyi, China.
| | | | | |
Collapse
|
16
|
Abstract
In 1992, China initiated its modern National TB Control Programme (NTP) with DOTS strategy through a project funded by a World Bank loan. Key motives for the revised NTP-DOTS were to reduce financial barriers to patients by removing fee charges for diagnosis and treatment, and to address regressive suppliers' incentives for appropriate referrals. This study aims to assess to what extent China's NTP subsidies are achieving the objective of removing financial barriers to care in terms of patients' expenditure. One county with NTP-DOTS - Jianhu - and one county without - Funing - were selected. A cohort of 493 tuberculosis patients newly diagnosed in 2002 was interviewed by questionnaire. The main outcome measure was tuberculosis patients' expenditure on medical care and transportation/accommodation from the onset of symptoms to treatment completion. During the follow-up period, Funing started implementing NTP-DOTS, which offered a possibility of longitudinal comparison both between counties and within county. Ninety-four per cent (465/493) of subjects were followed-up. The mean total patient's expenditure on TB medical care and transportation/accommodation before TB diagnosis was higher in Jianhu than in Funing (715 vs. 256CNY), whereas it was higher in Funing (835 vs. 157CNY) after diagnosis. After implementing NTP-DOTS in Funing, expenditure after diagnosis decreased slightly whereas expenditure before diagnosis increased remarkably. We found that the market incentive structures in the reformed health system appear to have a stronger regressive effect and may result in prolonged delays before effective treatment can be given. We believe that doctors adapt to new incentive structures, with bonus income being linked to the hospitals' fee-for-service revenue, and find new ways of keeping revenue at the old levels, which reduce or eliminate the intended effect of the subsidies. TB patients suffer a heavy economic burden even in counties where NTP-DOTS treatment is subsidized. The total patient expenditure was reduced only marginally, but shifted substantially from after diagnosis to before diagnosis. The shift could imply delays in diagnosis and treatment with an increased risk of infection transmission.
Collapse
Affiliation(s)
- B Xu
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China.
| | | | | | | |
Collapse
|
17
|
Figul M, Söling A, Dong HJ, Chou TC, Rainov NG. Combined effects of temozolomide and the ribonucleotide reductase inhibitors didox and trimidox in malignant brain tumor cells. Cancer Chemother Pharmacol 2003; 52:41-6. [PMID: 12690517 DOI: 10.1007/s00280-003-0611-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [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: 12/16/2002] [Accepted: 03/04/2003] [Indexed: 10/26/2022]
Abstract
PURPOSE Temozolomide (TMZ), an oral alkylating agent with good penetration of the blood-brain barrier, has shown efficacy in the treatment of malignant brain tumors. Ribonucleotide reductase (RR), the rate-limiting enzyme of DNA synthesis, seems to be a complementary target for combination chemotherapy of brain tumors. Trimidox (TX) and didox (DX) are two recently synthesized specific inhibitors of RR. The combinations of TMZ with TX or DX as a basis for synergistic chemotherapy protocols were tested in this study. METHODS The effects of the single drugs TMZ, DX, and TX, and the combinations TMZ/DX and TMZ/TX were evaluated in the human malignant glioma cell lines U87MG, T98G, LNZ308, and wt1119. In the latter, experiments were carried out in the presence or absence of wild-type p53 protein expressed under the control of a tetracycline-responsive transgene system. Cytotoxicity was evaluated by MTT assays. The isobologram and combination index (CI) method of Chou-Talalay were used to evaluate interactions between drugs. RESULTS All drugs demonstrated cytotoxicity in brain tumor cells. Synergistic cytotoxic effects (CI<1) for TMZ and TX or DX at different dose levels were demonstrated in most of the examined cell lines. In some instances, however, drug combinations resulted in additive or even antagonistic effects. Toxicity of the single agents and synergy of the combinations did not correlate with wild-type p53 expression in the tumor cells. CONCLUSION The tumor toxicity of TMZ as a single agent may be modified by combinations with the novel RR inhibitors DX and TX, and is synergistically enhanced in most cases. Depending on the combination ratio, the doses for each drug for a given degree of effect in the combination may be drastically reduced.
Collapse
Affiliation(s)
- M Figul
- Department of Neurosurgery, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | | | | | | | | |
Collapse
|
18
|
Lossie AC, Whitney MM, Amidon D, Dong HJ, Chen P, Theriaque D, Hutson A, Nicholls RD, Zori RT, Williams CA, Driscoll DJ. Distinct phenotypes distinguish the molecular classes of Angelman syndrome. J Med Genet 2001; 38:834-45. [PMID: 11748306 PMCID: PMC1734773 DOI: 10.1136/jmg.38.12.834] [Citation(s) in RCA: 237] [Impact Index Per Article: 10.3] [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: 11/04/2022]
Abstract
BACKGROUND Angelman syndrome (AS) is a severe neurobehavioural disorder caused by defects in the maternally derived imprinted domain located on 15q11-q13. Most patients acquire AS by one of five mechanisms: (1) a large interstitial deletion of 15q11-q13; (2) paternal uniparental disomy (UPD) of chromosome 15; (3) an imprinting defect (ID); (4) a mutation in the E3 ubiquitin protein ligase gene (UBE3A); or (5) unidentified mechanism(s). All classical patients from these classes exhibit four cardinal features, including severe developmental delay and/or mental retardation, profound speech impairment, a movement and balance disorder, and AS specific behaviour typified by an easily excitable personality with an inappropriately happy affect. In addition, patients can display other characteristics, including microcephaly, hypopigmentation, and seizures. METHODS We restricted the present study to 104 patients (93 families) with a classical AS phenotype. All of our patients were evaluated for 22 clinical variables including growth parameters, acquisition of motor skills, and history of seizures. In addition, molecular and cytogenetic analyses were used to assign a molecular class (I-V) to each patient for genotype-phenotype correlations. RESULTS In our patient repository, 22% of our families had normal DNA methylation analyses along 15q11-q13. Of these, 44% of sporadic patients had mutations within UBE3A, the largest percentage found to date. Our data indicate that the five molecular classes can be divided into four phenotypic groups: deletions, UPD and ID patients, UBE3A mutation patients, and subjects with unknown aetiology. Deletion patients are the most severely affected, while UPD and ID patients are the least. Differences in body mass index, head circumference, and seizure activity are the most pronounced among the classes. CONCLUSIONS Clinically, we were unable to distinguish between UPD and ID patients, suggesting that 15q11-q13 contains the only significant maternally expressed imprinted genes on chromosome 15.
Collapse
Affiliation(s)
- A C Lossie
- R C Philips Unit and Division of Genetics, Department of Pediatrics, University of Florida, Gainesville, FL 32610-0296, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Cheng ZJ, Du ZH, Li HX, Dong HJ, Feng R, Li GY. [Simultaneous observation of parameter of intraventricular pressure and energy metabolism in rat hearts using nuclear magnetic resonance]. Sheng Li Xue Bao 1999; 51:700-4. [PMID: 11498942] [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: 02/21/2023]
Abstract
A technique for simultaneous observation of parameters of intraventricular pressure and energy metabolic status in isovolumic rat hearts was described. The parameters of intraventricular pressure were collected and processed using a computerized monitoring system for heart function, and myocardial energy metabolism was investigated by collecting the 31P NMR spectra. The preparation was stable metabolically and functionally for 2 h under the NMR experimental conditions.
Collapse
Affiliation(s)
- Z J Cheng
- National Center for Biomedical Analysis, Academy of Military Medical Science, Beijing 100850
| | | | | | | | | | | |
Collapse
|
20
|
Yoon JH, Na DG, Byun HS, Koh YH, Chung SK, Dong HJ. Calcification in chronic maxillary sinusitis: comparison of CT findings with histopathologic results. AJNR Am J Neuroradiol 1999; 20:571-4. [PMID: 10319962 PMCID: PMC7056005] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
BACKGROUND AND PURPOSE It is important to differentiate fungal from nonfungal sinusitis in order to determine the optimal treatment for chronic sinusitis. The purpose of this study was to describe the CT findings of calcifications in chronic fungal and nonfungal maxillary sinusitis. METHODS Five hundred ten patients with pathologically proved chronic maxillary sinusitis were studied with unenhanced CT before undergoing sinonasal surgery. In 36 patients, the CT scans were reviewed retrospectively to ascertain the shape and location of intrasinus calcifications. RESULTS Calcifications were found in 20 (51%) of 39 patients with fungal sinusitis and in 16 (3%) of 471 patients with nonfungal sinusitis. Direct histopathologic correlation was performed in two of 16 patients with nonfungal sinusitis who had intrasinus calcification. The location of intrasinus calcification was central in 95% of the patients with fungal sinusitis and peripheral in 81% of those with nonfungal sinusitis. Although calcifications with a nodular or linear shape were seen in both fungal and nonfungal sinusitis, fine punctate type calcifications were seen only in those with fungal sinusitis (50%) and round or eggshell type calcifications only in those with nonfungal sinusitis (19%). CONCLUSION Intrasinus calcifications are different in location and shape between fungal and nonfungal maxillary sinusitis. Although intrasinus calcification is uncommon in nonfungal sinusitis, the CT finding of intrasinus calcification may be helpful for differentiating fungal from nonfungal maxillary sinusitis.
Collapse
Affiliation(s)
- J H Yoon
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | | | | | | | | | | |
Collapse
|
21
|
Zhan H, Dong HJ, Xin YM, Tang GX. Effects of tea polyphenols on cardiac function and myocardial ultrastructure in rats after repeated +Gz stress. Space Med Med Eng (Beijing) 1999; 12:79-83. [PMID: 12428647] [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: 02/27/2023]
Abstract
Objective. To observe the effects of tea polyphenols (TP) on cardiac function and myocardial ultrastructure in rats after repeated +10 Gz stress. Method. Twenty four male Wistar rats were randomly divided into three groups (n=8 each): group A (control), group B (+10 Gz), group C (+Gz with TP). Group B and C were repeatedly exposed to +10 Gz (each for 30 s, onset rate about 0.5 G/s, 3 times/d with +1 Gz 1 min intervals, 3 d/wk, 4 weeks in total), but group A was only submitted to +1 Gz. TP (200 mg kg-1) was given orally to group C about 1 h prior to the +Gz experiment, and distilled water was given to group A and B. Function of isolated rat working hearts and myocardial ultrastructure were observed. Result. A significant decrease of left ventricular systolic pressure (LVSP) and injury of myocardial structure in rats were demonstrated after repeated +10 Gz stress. But TP could remarkably elevate the LVSP and improve myocardial ultrastructural injury in +10 Gz stressed rats. Conclusion. These results indicated that repeated high G exposure may produce cardiac structural and functional injuries in rats which might be partly related to free radical metabolism; and antioxidant TP had significant protective effects on the hearts of +Gz stressed rats.
Collapse
Affiliation(s)
- H Zhan
- Institute of Aviation Medicine, Beijing
| | | | | | | |
Collapse
|
22
|
Abstract
The Rac guanosine 5'-triphosphate (GTP)-binding proteins regulate oxidant production by phagocytic leukocytes. Two Ste20-related p21-activated kinases (PAKs) were identified as targets of Rac in human neutrophils. Activity of the approximately 65- and approximately 68-kilodalton PAKs was rapidly stimulated by chemoattractants acting through pertussis toxin-sensitive heterotrimeric GTP-binding proteins (G proteins). Native and recombinant PAKs phosphorylated the p47phox reduced nicotinamide adenine dinucleotide phosphate (NADPH) oxidase component in a Rac-GTP-dependent manner. The action of PAKs during phagocyte activation by G protein-coupled pathways may contribute to regulation of NADPH oxidase activity.
Collapse
Affiliation(s)
- U G Knaus
- Department of Immunology, Scrippts Research Institute, La Jolla, CA 92037, USA
| | | | | | | | | |
Collapse
|
23
|
Wang JF, Dong HJ, Xiao WB. Effect of hypoxia on angiotensin II content and its receptor in guinea pig aorta. Zhongguo Yao Li Xue Bao 1995; 16:373-5. [PMID: 7668114] [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: 01/26/2023]
Abstract
AIM To study the effects of hypoxia on the vasoconstrictive response and the angiotensin II (Ang II) content and its receptor. METHODS Hypoxia was induced in isolated aorta of guinea pig by gassing N2. The vasoconstrictive response of aorta to Ang II was recorded. Ang II content and its receptor were measured by radioimmuoassay. RESULTS Ang 3-3000 nmol L-1 increased the contractile response of aorta. Hypoxia amplified the vasoconstrictive effect of Ang II. The concentration of Ang II were 44 +/- 24 and 50 +/- 17 pg/g wet wt (n = 10), respectively in non-hypoxic and hypoxic aortae. The receptor density in non-hypoxic aorta was 17 +/- 3 fmol mg-1, and that in hypoxia was 33 +/- 5 fmol mg-1 (P < 0.01). CONCLUSION The enhancement of the vasoconstrictive action of Ang II by hypoxia is due to the increase in the angiotensin receptor density, but not associated with the changes in the Ang II content in hypoxic aorta of guinea pig.
Collapse
Affiliation(s)
- J F Wang
- Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing, China
| | | | | |
Collapse
|
24
|
Abstract
Twenty-seven cases of histiocytosis X (HX) for which paraffin blocks were available were studied with the use of S-100 protein immunohistochemistry, peanut agglutinin affinity histochemistry, and transmission electron microscopy. The results show that these techniques did enable identification of Langerhans'-type histiocytes in 88.5%, 75%, and 47.4% of cases, respectively. All techniques were proved to be of some diagnostic value for HX, but none was able to confirm the diagnosis in all instances and none could foretell the prognosis of the patients. This study shows that besides the Langerhans' cells, the indeterminate cells of the skin and the interdigitating dendritic reticulum cells of the lymph node may also be involved in this process. Moreover, some multinucleate giant cells and foamy cells may be derived from Langerhans' and related cells.
Collapse
Affiliation(s)
- F Ye
- Department of Pathology, Affiliated Hospital, Zhanjiang Medical College, Guangdong, People's Republic of China
| | | | | |
Collapse
|
25
|
Dong HJ. [The analysis of the affecting of season factor on mortality in Shanghai County (1975-1986)]. Zhonghua Yu Fang Yi Xue Za Zhi 1989; 23:263-5. [PMID: 2625058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
This paper analysed the affect of season on mortality in Shanghai County (a rural area) using the Moving Average Method. The advantage of the method is that it can balance the periodical change, long-term change and random change of mortality, so it can analyse the affecting of pure season factor on mortality. The results showed a relationship between mortality and season. The mortality of 0 years old was high in December, possibly due to the cold. The mortality of preschool children was high in summer, farm-busy-time, possible reasons were drowning and parents did not have much time to care for children. The mortality of middle-age, old people, and patients with cardiovascular disease, cerebrovascular disease and disease of respiratory system, was high in winter and summer, possible reason was cold attacks. The mortality of accidental death was high in Summer, possible reason due to drowning.
Collapse
|
26
|
Dong HJ, Huang SZ. [Endodermal sinus tumor (yolk sac tumor)--report of 52 cases and review of the literature of 1224 cases]. Zhonghua Zhong Liu Za Zhi 1988; 10:213-6. [PMID: 2464466] [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: 01/01/2023]
Abstract
52 cases of endodermal sinus tumors (EST) are reported and 1224 cases from the Chinese and foreign literature are reviewed. This tumor, occurring usually in the gonads and rarely at extragonadal sites, comprised 10-17.1% of the former. It is located on or along the mid-line of the body including the orbit and other organs. In this paper, there are two cases with the tumor located at the orifice of urethra and one case between the pubic bone and the urinary bladder which has never been reported. EST often occurs in people under the age of 35. EST in the gonadal sites is divided into infant-childhood and adult groups. In the former group the prognosis is better than that of the adult group when the tumor is located in the testis as well as those in the vagina. There is sex and age difference for some EST in extragonadal sites. Those in the mediastinum almost always occur in young males. Diagnosis is easily made by pathology and by serum alpha-fetal protein (SAFP). Pathologically it is divided into two types: simple EST and EST element mixed with other germ cell tumors which give the same prognosis. The authors suggest that SAFP be done for any patients with teratomata in order to avoid misdiagnosis. SAFP is not only diagnostic but also prognostic by monitering postoperative course. EST is a highly malignant tumor, rapidly growing and poor in prognosis. Recent reports show that operated patients supplemented by chemotherapy give much better results than by radiotherapy.
Collapse
|
27
|
Dong HJ, Li JG, Zeng JH, Huang SZ. Papillary adenocarcinoma of the broad ligament. Report of a case and review of literature. Chin Med J (Engl) 1986; 99:431-2. [PMID: 3100180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
|
28
|
Dong HJ, Huang SZ, Huang SW. Tumors of the small intestine. Report of 131 cases and review of 1,024 cases in the literature. Chin Med J (Engl) 1986; 99:91-6. [PMID: 3093170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
|
29
|
Dong HJ, Ke RL. An extraordinary breast giant fibroadenoma (cystosarcoma phyllodes) in a female adolescent. Chin Med J (Engl) 1984; 97:627-9. [PMID: 6097413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
|
30
|
Dong HJ. [The relation between soft tissue malignant mesenchymoma and other sarcomas--a case report of malignant mesenchymoma of the tunica vaginalis of the left testis]. Zhonghua Zhong Liu Za Zhi 1984; 6:229-30. [PMID: 6510205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
31
|
Dong HJ. [Subependymal giant-cell astrocytoma complicated by tuberous sclerosis--a case report]. Zhonghua Zhong Liu Za Zhi 1984; 6:151-2. [PMID: 6468260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
32
|
Dong HJ, Huang SW, Shi MC. Retroperitoneal malignant fibrous histiocytoma. Report of 10 cases with review of the Chinese literature. Chin Med J (Engl) 1983; 96:841-6. [PMID: 6329609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
|
33
|
Dong HJ. [Necrotizing sialometaplasia--a case report and review of literature (author's transl)]. Zhonghua Zhong Liu Za Zhi 1982; 4:68-9. [PMID: 7094814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
|
34
|
Zeng Y, Shen SJ, Pi GH, Ma JL, Zhang Q, Zhao ML, Dong HJ. Anticomplement immunoenzymatic method of detecting Epstein-Barr nuclear antigen in nasopharyngeal carcinoma cells and normal epithelial cells. Chin Med J (Engl) 1981; 94:663-8. [PMID: 6274591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
|
35
|
Zeng Y, Pi GH, Zhang Q, Shen SJ, Zhao ML, Ma JL, Dong HJ. [Application of anticomplement immunoenzymatic method for the detection of EBNA in carcinoma cells and normal epithelial cells from nasopharynx (author's transl)]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 1980; 2:220-3. [PMID: 6273001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
36
|
Dong HJ, Huang SW, Huang CX. Congenital meningioma. Chin Med J (Engl) 1980; 93:159-63. [PMID: 6766845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
|