1
|
Lei JY, Chen L, Wang P, Kou MQ, Li WS. [HHV8-unrelated primary effusion lymphoma-like lymphoma: report of a case]. Zhonghua Bing Li Xue Za Zhi 2023; 52:84-86. [PMID: 36617919 DOI: 10.3760/cma.j.cn112151-20220327-00226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- J Y Lei
- Department of Pathology, Shaanxi Provincial People's Hospital,Xi'an 710068, China
| | - L Chen
- Department of Pathology, Shaanxi Provincial People's Hospital,Xi'an 710068, China
| | - P Wang
- Department of Pathology, Shaanxi Provincial People's Hospital,Xi'an 710068, China
| | - M Q Kou
- Department of Radiology, Shaanxi Provincial People's Hospital, Xi'an 710068, China
| | - W S Li
- Department of Pathology, Shaanxi Provincial People's Hospital,Xi'an 710068, China
| |
Collapse
|
2
|
Lu YH, Wu H, Zhang HH, Li WS, Lai ACK. Synergistic disinfection of aerosolized bacteria and bacteriophage by far-UVC (222-nm) and negative air ions. J Hazard Mater 2023; 441:129876. [PMID: 36087531 DOI: 10.1016/j.jhazmat.2022.129876] [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: 06/23/2022] [Revised: 08/22/2022] [Accepted: 08/28/2022] [Indexed: 06/15/2023]
Abstract
Air ionizers and 222-nm krypton-chlorine (KrCl) excilamp have proven to be effective disinfection apparatus for bacteria and viruses with limited health risks. We determined inactivation efficiencies by operating them individually and in combined modules. Gram-positive and gram-negative bacteria, non-enveloped dsDNA virus, and enveloped dsRNA virus were examined in a designed air disinfection system. Our results showed that the bioaerosols were inactivated efficiently by negative ionizers and far-UVC (222-nm), either used individually or in combination. Among which the combined modules of negative ionizers and KrCl excilamp had the best disinfection performance for the bacteria. The aerosolized virus P22 and Phi 6 were more susceptible to 222-nm emitted by KrCl excilamp than negative air ions. Significant greater inactivation of bacterial bioaerosols were identified after treated by combined treatment of negative air ion and far-UVC for 2 minutes (Escherichia coli, 6.25 natural log (ln) reduction; Staphylococcus epidermidis, 3.66 ln reduction), as compared to the mean sum value of inactivation results by respective individual treatment of negative ionizers and KrCl excilamp (Escherichia coli, 4.34 ln; Staphylococcus epidermidis, 1.75 ln), indicating a synergistic inactivation effect. The findings provide important baseline data to support the design and development of safe and high-efficient disinfection systems.
Collapse
Affiliation(s)
- Y H Lu
- Department of Architecture and Civil Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong China
| | - H Wu
- Department of Architecture and Civil Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong China; Department of Biology, Hong Kong Baptist University, Kowloon, Hong Kong China
| | - H H Zhang
- Department of Architecture and Civil Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong China
| | - W S Li
- School of Public Health, The University of Hong Kong, Pokfulam, Hong Kong China
| | - A C K Lai
- Department of Architecture and Civil Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong China.
| |
Collapse
|
3
|
Li W, Lv L, Zhu J. Multigroup spatial shift models for thermal infrared tracking. Knowl Based Syst 2022. [DOI: 10.1016/j.knosys.2022.109705] [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: 11/26/2022]
|
4
|
Jian ZC, Long JF, Liu YJ, Hu XD, Liu JB, Shi XQ, Li WS, Qian LX. Diagnostic value of two dimensional shear wave elastography combined with texture analysis in early liver fibrosis. World J Clin Cases 2019; 7:1122-1132. [PMID: 31183343 PMCID: PMC6547320 DOI: 10.12998/wjcc.v7.i10.1122] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 03/19/2019] [Accepted: 04/09/2019] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Staging diagnosis of liver fibrosis is a prerequisite for timely diagnosis and therapy in patients with chronic hepatitis B. In recent years, ultrasound elastography has become an important method for clinical noninvasive assessment of liver fibrosis stage, but its diagnostic value for early liver fibrosis still needs to be further improved. In this study, the texture analysis was carried out on the basis of two dimensional shear wave elastography (2D-SWE), and the feasibility of 2D-SWE plus texture analysis in the diagnosis of early liver fibrosis was discussed.
AIM To assess the diagnostic value of 2D-SWE combined with textural analysis in liver fibrosis staging.
METHODS This study recruited 46 patients with chronic hepatitis B. Patients underwent 2D-SWE and texture analysis; Young's modulus values and textural patterns were obtained, respectively. Textural pattern was analyzed with regard to contrast, correlation, angular second moment (ASM), and homogeneity. Pathological results of biopsy specimens were the gold standard; comparison and assessment of the diagnosis efficiency were conducted for 2D-SWE, texture analysis and their combination.
RESULTS 2D-SWE displayed diagnosis efficiency in early fibrosis, significant fibrosis, severe fibrosis, and early cirrhosis (AUC > 0.7, P < 0.05) with respective AUC values of 0.823 (0.678-0.921), 0.808 (0.662-0.911), 0.920 (0.798-0.980), and 0.855 (0.716-0.943). Contrast and homogeneity displayed independent diagnosis efficiency in liver fibrosis stage (AUC > 0.7, P < 0.05), whereas correlation and ASM showed limited values. AUC of contrast and homogeneity were respectively 0.906 (0.779-0.973), 0.835 (0.693-0.930), 0.807 (0.660-0.910) and 0.925 (0.805-0.983), 0.789 (0.639-0.897), 0.736 (0.582-0.858), 0.705 (0.549-0.883) and 0.798 (0.650-0.904) in four liver fibrosis stages, which exhibited equivalence to 2D-SWE in diagnostic efficiency (P > 0.05). Combined diagnosis (PRE) displayed diagnostic efficiency (AUC > 0.7, P < 0.01) for all fibrosis stages with respective AUC of 0.952 (0.841-0.994), 0.896 (0.766-0.967), 0.978 (0.881-0.999), 0.947 (0.835-0.992). The combined diagnosis showed higher diagnosis efficiency over 2D-SWE in early liver fibrosis (P < 0.05), whereas no significant differences were observed in other comparisons (P > 0.05).
CONCLUSION Texture analysis was capable of diagnosing liver fibrosis stage, combined diagnosis had obvious advantages in early liver fibrosis, liver fibrosis stage might be related to the hepatic tissue hardness distribution.
Collapse
Affiliation(s)
- Zhao-Cheng Jian
- Department of Ultrasound, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
- Medical Imaging Center, Affiliated Hospital of Weifang Medical University, Weifang 261031, Shandong Province, China
| | - Jin-Feng Long
- Medical Imaging Center, Affiliated Hospital of Weifang Medical University, Weifang 261031, Shandong Province, China
| | - Yu-Jiang Liu
- Department of Ultrasound, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Xiang-Dong Hu
- Department of Ultrasound, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Ji-Bin Liu
- Institute of Ultrasound, Thomas Jefferson University Hospital, Philadelphia, PA 19107, United States
| | - Xian-Quan Shi
- Department of Ultrasound, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Wei-Sheng Li
- Department of Ultrasound, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Lin-Xue Qian
- Department of Ultrasound, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| |
Collapse
|
5
|
Chen GH, Tzekov R, Jiang FZ, Mao SH, Tong YH, Li WS. Iatrogenic retinal breaks and postoperative retinal detachments in microincision vitrectomy surgery compared with conventional 20-gauge vitrectomy: a meta-analysis. Eye (Lond) 2018; 33:785-795. [PMID: 30560911 DOI: 10.1038/s41433-018-0319-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 11/04/2018] [Accepted: 11/17/2018] [Indexed: 12/19/2022] Open
Abstract
PURPOSE To assess the incidence of iatrogenic retinal breaks (IRBs) and postoperative retinal detachments (RDs) in microincision vitrectomy surgery (MIVS) compared with 20-gauge (20 G) vitrectomy. METHODS A comprehensive literature search was performed to find relevant studies and a meta-analysis of the IRBs and postoperative RDs rates after 20 G vitrectomy versus MIVS was conducted. RESULTS Thirty-two studies were selected, including 14,373 eyes (6932 eyes in the 20 G group, 7441 eyes in the MIVS group). The meta-analysis demonstrated that the incidence of IRBs was significantly higher in 20 G vitrectomy vs. MIVS (OR = 2.22, 95% CI, 1.93-2.57, P < 0.00001) and in a subanalysis vs. 23 G MIVS (OR = 2.19, 95% CI, 1.87-2.56, P < 0.00001) and vs. 25 G MIVS (OR = 2.27, 95% CI, 1.62-3.18, P < 0.00001). Similar result was obtained in a subanalysis for macular surgery (OR = 2.44, 95% CI, 1.99-2.99, P < 0.00001), and also for sclerotomy-related IRBs (OR = 3.73, 95% CI, 2.55-5.44, P < 0.00001), but not for surgically induced posterior vitreous detachment-related IRBs (OR = 1.59, 95% CI, 0.89-2.84, P = 0.12). The incidence of postoperative RDs in 20 G vitrectomy was significantly higher compared to MIVS (OR = 1.72, 95% CI, 1.21-2.46, P = 0.003) and in a subanalysis vs. 23 G MIVS (OR = 2.45, 95% CI, 1.50-4.00, P = 0.0003), but not for 25 G MIVS (OR = 1.01, 95% CI, 0.63-1.64, P = 0.96). Similar result was obtained in a subanalysis for macular surgery (OR = 1.89, 95% CI, 1.26-2.85, P = 0.002). CONCLUSION This meta-analysis demonstrated that MIVS is associated with a lower risk of IRBs and postoperative RDs compared to 20 G vitrectomy.
Collapse
Affiliation(s)
- G H Chen
- Department of Ophthalmology, Quzhou People's Hospital, Quzhou, Zhejiang, People's Republic of China
| | - R Tzekov
- Department of Ophthalmology, University of South Florida, Tampa, FL, USA
| | - F Z Jiang
- Department of Ophthalmology, Quzhou People's Hospital, Quzhou, Zhejiang, People's Republic of China
| | - S H Mao
- Department of Ophthalmology, Quzhou People's Hospital, Quzhou, Zhejiang, People's Republic of China
| | - Y H Tong
- Department of Ophthalmology, Quzhou People's Hospital, Quzhou, Zhejiang, People's Republic of China
| | - W S Li
- Shanghai Aier Eye Hospital, 1286 Hongqiao Road, Shanghai, People's Republic of China. .,Aier School of Ophthalmology, Central South University, Changsha, Hunan Province, People's Republic of China.
| |
Collapse
|
6
|
Lai ACK, Nunayon SS, Tan TF, Li WS. A pilot study on the disinfection efficacy of localized UV on the flushing-generated spread of pathogens. J Hazard Mater 2018; 358:389-396. [PMID: 30005250 PMCID: PMC7116983 DOI: 10.1016/j.jhazmat.2018.07.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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: 02/05/2018] [Revised: 06/25/2018] [Accepted: 07/01/2018] [Indexed: 05/21/2023]
Abstract
The process of toilet-flushing can generate flushing-associated water droplets which can potentially expose humans to pathogen-laden aerosols. Very little is known about such aerosol dissemination or the means for minimizing exposure to these aerosols. This study has evaluated the efficacy of ultraviolet waveband C (UV-C) for disinfection of flushing-generated pathogen-laden aerosols through tests with localized disinfection systems for airborne and surface contaminations. Three types of bacteria were chosen for investigation: Staphylococcus epidermidis, Escherichia coli, and Salmonella typhimurium. Tests were conducted with UV-C tubes of 5 W and 10 W. High levels of disinfection efficacies were observed, ranging from 76% to 97% for bacteria-laden aerosols at sources of emission, and efficiencies of 53% to 79% for surface samples in localized systems. The results from the localized systems were further compared with those obtained with an upper-room ultraviolet germicidal irradiation (UVGI) system. As it is important to note, the UV-C doses and ozone emissions for the localized systems were found well below the limits recommended in current guidelines. This research has shown that the disinfection of flushing-generated pathogen-laden aerosols in proximity to the source of emission was more effective than at the more distant sites where aerosols may be dispersed to the environment.
Collapse
Affiliation(s)
- A C K Lai
- Department of Architecture and Civil Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong.
| | - S S Nunayon
- Department of Architecture and Civil Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
| | - T F Tan
- Shenzhen Key Laboratory for the Sustainable Use of Marine Biodiversity, Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen, China
| | - W S Li
- Queen Mary Hospital, Pokfulam Road, Hong Kong; School of Public Health, The University of Hong Kong, Hong Kong
| |
Collapse
|
7
|
Xiao JP, Lv JX, Yin YX, Jiang L, Li WS, Tao T, Liao XP, Xu ZC. Lower maternal and fetal vitamin D status and higher placental and umbilical vitamin D receptor expression in preeclamptic pregnancies. Int J Clin Exp Pathol 2017; 10:10841-10851. [PMID: 31966427 PMCID: PMC6965872] [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] [Received: 07/06/2017] [Accepted: 09/18/2017] [Indexed: 06/10/2023]
Abstract
OBJECTIVE To explore associations between maternal and fetal vitamin D status in preeclamptic pregnancies. METHODS A case-control experiment was carried out with proportion ratio of 1:1 (controls: n = 60 vs cases: n = 60). Blood collection of both maternal and cord were performed before and during delivery, respectively, and 25(OH)D measurement was conducted. Difference analysis was performed according to returned data. Immunohistochemical analysis, together with semi-quantitative Western blot, was also performed to determine protein expression of vitamin D receptor in placenta and cord tissues of ESPE. RESULTS Mean ± SD values of maternal 25(OH)D in control and PE group were 38.06 ± 6.28 and 33.05 ± 4.10, respectively, and significant differences with P < 0.0001 were found between control and PE in both continuous and categorical variables, especially in ESPE subtype (32.96 ± 4.49). The deficiency category (< 30 nmol/L) showed increased odds of PE (OR, 2.83, 95% CI, 1.32-6.08) in both maternal 25(OH)D and cord 25(OH)D in multivariable logistic regression. Semi-quantitative analysis showed that expression of placenta VDR in the ESPE subgroup was significantly higher than that in control group with P < 0.001, while expression of umbilical vein VDR in ESPE subgroup was significantly higher than that in control group with P < 0.05. CONCLUSIONS The present study finds that lowest maternal and fetal vitamin D status in ESPE existed in the preeclampsia subsets. The VDR expression in placenta and fetus in ESPE were higher than that of normal pregnancy, which indicated that it might be related to placenta compensatory mechanism and is worthy of further research.
Collapse
Affiliation(s)
- Jian-Ping Xiao
- Institute for Fetology, First Hospital of Soochow UniversitySuzhou, China
- Prenatal Diagnosis Center, Wuxi Maternity and Children Health Hospital Affiliated Nanjing Medical UniversityWuxi, China
| | - Juan-Xiu Lv
- Institute for Fetology, First Hospital of Soochow UniversitySuzhou, China
| | - Yong-Xiang Yin
- Department of Pathology, Wuxi Maternity and Children Health Hospital Affiliated Nanjing Medical UniversityWuxi, China
| | - Ling Jiang
- Institute for Fetology, First Hospital of Soochow UniversitySuzhou, China
| | - Wei-Sheng Li
- Institute for Fetology, First Hospital of Soochow UniversitySuzhou, China
| | - Tao Tao
- Prenatal Diagnosis Center, Wuxi Maternity and Children Health Hospital Affiliated Nanjing Medical UniversityWuxi, China
| | - Xiang-Peng Liao
- Prenatal Diagnosis Center, Wuxi Maternity and Children Health Hospital Affiliated Nanjing Medical UniversityWuxi, China
| | - Zhi-Ce Xu
- Institute for Fetology, First Hospital of Soochow UniversitySuzhou, China
| |
Collapse
|
8
|
Ouyang HC, Ouyang FC, Mai LL, Chen YY, Hu YZ, Chen HX, Li WS. [Predictive value of cardiac magnetic resonance-derived parameters on the improvement of left ventricular function in patients with acute viral myocarditis]. Zhonghua Xin Xue Guan Bing Za Zhi 2017; 45:758-764. [PMID: 29036973 DOI: 10.3760/cma.j.issn.0253-3758.2017.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Objective: To evaluate the predictive value of cardiac magnetic resonance (CMR)-derived parameters on the improvement of left ventricular function in patients with acute viral myocarditis. Methods: Forty patients, who referred for acute viral myocarditis in our hospital from September 2011 to September 2015, were prospectively enrolled in this study.All patients were examined by CMR during hospitalization for acute viral myocarditis (baseline) and after 12 months.The CMR sequences include: two dimension steady state free precession, 2D SSFP; triple inversion recovery, triple IR; early gadolinium enhancement; phase sensitive inversion recovery turbo field echo, PSIR TFE. Results: Thirty out of 40 patients with susceptive acute viral myocarditis met the CMR criteria of acute viral myocarditis (Lake Louise Criteria) (LL+ ) and the other 10 patients did not meet the diagnostic criteria (LL-). Left ventricular ejection fraction (LVEF) values were significantly lower in LL+ group than in LL- group at baseline and at 12 months after discharge (P<0.01 or 0.05, respectively). The baseline left ventricular end-systolic volume index (LVESVI) was significantly higher in LL+ group than in LL- group (P<0.05) and was similar between the groups at 12 months follow up.Left ventricular end-diastolic volume index (LVEDVI )was similar between the two groups at baseline and at 12 months follow up.LVEF was significantly higher during 12 months follow up compared to baseline in LL+ group and remained unchanged in LL- group during the two time points.LVESVI and LVEDVI remained unchanged at baseline and during 12 months follow up both in LL+ and LL- groups (P>0.05). Results showed that LL+ , edema ratio (ER) positive and global relative enhancement (gRE) positive were associated with significant increase of LVEF at 12 months follow up.However, LL-, ER negative, gRE negative, late gadolinium enhancement(LGE) negative and LGE positive linked with unchanged LVEF at 12 months follow up (P>0.05). Patients were further divided into LVEF increase (ΔLVEF≥5%) group and non LVEF increase group (ΔLVEF<5%), the results of Chi-square test showed that LL+ and ER positive were related to the improvement of LVEF (P<0.05), while gRE and LGE were not associated with improvement of cardiac function (P>0.05). Multiple linear regression analysis, using ER, gRE and LGE as independent variables and LVEF as dependent variables, showed that the presence of myocardial edema was the strongest independent predictor of an increase in LVEF at follow up (full model: non-standardized coefficient 0.445, P=0.043; reduced model: non-standardized coefficient 0.442, P=0.12). Conclusion: Cardiac magnetic resonance imaging monitoring is valuable to observe the cardiac function and morphology changes in patients with acute viral myocarditis, and myocardial edema imaging is the most powerful parameter to predict the improvement of LVEF in this patient cohort.
Collapse
Affiliation(s)
- H C Ouyang
- Department of Cardiology, Shunde Hospital of Southern Medical University(First People's Hospital of Shunde), Foshan 528300, China
| | | | | | | | | | | | | |
Collapse
|
9
|
Zhou XG, Zhang YL, Xie JL, Huang YH, Zheng YY, Li WS, Chen H, Liu F, Pan HX, Wei P, Wang Z, Hu YC, Yang KY, Xiao HL, Wu MJ, Yin WH, Mei KY, Chen G, Yan XC, Meng G, Xu G, Li J, Tian SF, Zhu J, Song YQ, Zhang WJ. [The understanding of Epstein-Barr virus associated lymphoproliferative disorder]. Zhonghua Bing Li Xue Za Zhi 2017; 45:817-821. [PMID: 28056294 DOI: 10.3760/cma.j.issn.0529-5807.2016.12.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
In recent years, there are increasing articles concerning Epstein-Barr virus associated lymphoproliferative disorder (EBV+ LPD), and the name of EBV+ LPD is used widely. However, the meaning of EBV+ LPD used is not the same, which triggered confusion of the understanding and obstacles of the communication. In order to solve this problem. Literature was reviewed with combination of our cases to clarify the concept of EBV+ LPD and to expound our understanding about it. In general, it is currently accepted that EBV+ LPD refers to a spectrum of lymphoid tissue diseases with EBV infection, including hyperplasia, borderline lesions, and neoplastic diseases. According to this concept, EBV+ LPD should not include infectious mononucleosis (IM) and severe acute EBV infection (EBV+ hemophagocytic lymphohistiocytosis, fatal IM, fulminant IM, fulminant T-cell LPD), and should not include the explicitly named EBV+ lymphomas (such as extranodal NK/T cell lymphoma, aggressive NK cell leukemia, Burkitt lymphoma, and Hodgkin lymphoma, etc.) either. EBV+ LPD should currently include: (1) EBV+ B cell-LPD: lymphomatoid granulomatosis, EBV + immunodeficiency related LPD, chronic active EBV infection-B cell type, senile EBV+ LPD, etc. (2) EBV+ T/NK cell-LPD: CAEBV-T/NK cell type, hydroa vacciniforme, hypersensitivity of mosquito bite, etc. In addition, EBV+ LPD is classified, based on the disease process, pathological and molecular data, as 3 grades: grade1, hyperplasia (polymorphic lesions with polyclonal cells); grade 2, borderline (polymorphic lesions with clonality); grade 3, neoplasm (monomorphic lesions with clonality). There are overlaps between EBV+ LPD and typical hyperplasia, as well as EBV+ LPD and typical lymphomas. However, the most important tasks are clinical vigilance, early identification of potential severe complications, and treating the patients in a timely manner to avoid serious complications, as well as the active treatment to save lives when the complications happened.
Collapse
Affiliation(s)
- X G Zhou
- Department of Pathology, Beijing Friendship Hospital Capital Medical University, Beijing 100050, China
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Cheng VCC, Tai JWM, Li WS, Chau PH, So SYC, Wong LMW, Ching RHC, Ng MML, Ho SKY, Lee DWY, Lee WM, Wong SCY, Yuen KY. Implementation of directly observed patient hand hygiene for hospitalized patients by hand hygiene ambassadors in Hong Kong. Am J Infect Control 2016; 44:621-4. [PMID: 26777285 DOI: 10.1016/j.ajic.2015.11.024] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 11/16/2015] [Accepted: 11/17/2015] [Indexed: 11/16/2022]
Abstract
BACKGROUND The importance of compliance with hand hygiene by patients is increasingly recognized to prevent health care-associated infections. METHODS This descriptive study observed the effects of an education campaign, targeted to increase patients' self-initiated hand hygiene, and a hand hygiene ambassador-initiated directly observed hand hygiene program on patients' hand hygiene compliance in a university-affiliated hospital. RESULTS The overall audited compliance of patients' self-initiated hand hygiene was only 37.5%, with a rate of 26.9% (112/416 episodes) before meals and medications, 27.5% (19/69 episodes) after using a urinal or bedpan, and 89.7% (87/97 episodes) after attending toilet facilities. Patients referred from a residential care home for older adults had significantly lower hand hygiene compliance (P = .007). Comparatively, the overall audited compliance of ambassador-initiated directly observed hand hygiene was 97.3% (428/440 episodes), which was significantly higher than patients' self-initiated hand hygiene via a patient education program (37.5%, 218/582 episodes, P < .001). CONCLUSIONS Directly observed hand hygiene can play an important role in improving compliance with hand hygiene by hospitalized patients.
Collapse
Affiliation(s)
- Vincent C C Cheng
- Department of Microbiology, Queen Mary Hospital, Hong Kong Special Administrative Region, China; Infection Control Team, Queen Mary Hospital, Hong Kong Special Administrative Region, China
| | - Josepha W M Tai
- Infection Control Team, Queen Mary Hospital, Hong Kong Special Administrative Region, China
| | - W S Li
- Infection Control Team, Queen Mary Hospital, Hong Kong Special Administrative Region, China
| | - P H Chau
- School of Nursing, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Simon Y C So
- Department of Microbiology, Queen Mary Hospital, Hong Kong Special Administrative Region, China
| | - Lisa M W Wong
- Infection Control Team, Queen Mary Hospital, Hong Kong Special Administrative Region, China
| | - Radley H C Ching
- Infection Control Team, Queen Mary Hospital, Hong Kong Special Administrative Region, China
| | - Modissa M L Ng
- Infection Control Team, Queen Mary Hospital, Hong Kong Special Administrative Region, China
| | - Sara K Y Ho
- Infection Control Team, Queen Mary Hospital, Hong Kong Special Administrative Region, China
| | - Doris W Y Lee
- Infection Control Team, Queen Mary Hospital, Hong Kong Special Administrative Region, China
| | - W M Lee
- Infection Control Team, Queen Mary Hospital, Hong Kong Special Administrative Region, China
| | - Sally C Y Wong
- Department of Microbiology, Queen Mary Hospital, Hong Kong Special Administrative Region, China
| | - K Y Yuen
- Department of Microbiology, Queen Mary Hospital, Hong Kong Special Administrative Region, China.
| |
Collapse
|
11
|
Fu JT, Tang L, Li WS, Wang K, Cheng DM, Zhang ZX. Fumigant Toxicity and Repellence Activity of Camphor Essential Oil from Cinnamonum camphora Siebold Against Solenopsis invicta Workers (Hymenoptera:Formicidae). J Insect Sci 2015; 15:129. [PMID: 26392574 PMCID: PMC4664941 DOI: 10.1093/jisesa/iev112] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [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: 11/04/2014] [Accepted: 08/28/2015] [Indexed: 05/21/2023]
Abstract
The red imported fire ant (RIFA) Solenopsis invicta Buren causes severe damage to humans and animals as well as the environment. Chemical treatment is the main strategy of RIFA management, which also is potentially toxic to the environment. Plant essential oils (EOs) are considered as potential substance that can be used to control insects. This study aimed to identify the chemical composition of camphor EO and investigate the insecticidal activity on RIFAs. The chemical composition of the EO was analyzed by gas chromatography/mass spectrometry and gas chromatography with flame ionization detection. Results revealed that 36.61% camphor and 30.05% cineole were the major components. The insecticidal activity of camphor EO was assessed against RIFA workers by conducting two different bioassays: fumigant toxicity and repellence. Fumigant toxicity assay results showed that the lethal dose (LC50) of the EO at 24 h was 1.67 and 4.28 μg/ml for minor and major workers, respectively; knockdown time (KT50) was 10.82 and 14.73 h. At 2.55 μg/ml, the highest average mortality of the ants was 84.89% after 72 h. Camphor EO exhibited fumigant toxicity against minor and major workers as indicated by the effects on attacking, feeding, and climbing behaviors. This EO was also strongly repellent to the two size workers of the colony as observed in their behavior against Tenebrio molitor treated with 5 µl EO. The fumigant toxicity and repellence of camphor EO against RIFA indicated that this substance could be a potential alternative for the development of eco-friendly products used to control pests.
Collapse
Affiliation(s)
- J T Fu
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| | - L Tang
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| | - W S Li
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| | - K Wang
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| | - D M Cheng
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, China Department of Plant Protection, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Z X Zhang
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, China State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangzhou 510642, China
| |
Collapse
|
12
|
Zhou Y, Wang K, Yan C, Li WS, Li H, Zhang N, Zhang ZX. Effect of two formulations on the decline curves and residue levels of rotenone in cabbage and soil under field conditions. Ecotoxicol Environ Saf 2014; 104:23-27. [PMID: 24632119 DOI: 10.1016/j.ecoenv.2014.02.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [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: 07/28/2013] [Revised: 02/09/2014] [Accepted: 02/12/2014] [Indexed: 06/03/2023]
Abstract
The dissipation and residue levels of rotenone with suspension concentrate (SC) as well as water dispersible granule (WDG) formulations in cabbage and soil were investigated under field conditions. The decline curves of rotenone residues in cabbage and soil corresponded with first-order kinetics. The dissipation rate of rotenone in cabbage was faster than that in soil. The half-lives of the SC formulations in cabbage and soil were 1.14d to 1.85d and 2.26d to 3.98d, respectively. For the WDG formulation, the values were 1.33d to 1.96d and 2.41d to 3.38d. Less spraying, lower dosage, and longer pre-harvest intervals could reduce terminal residue levels. Terminal residues below the MRL (0.5mg kg(-1)) were achieved after pre-harvest intervals of 3d at either once (45g a.i. ha(-1)) or twice (90g a.i. ha(-1)) the recommended dosage. The different dissipation processes of rotenone in cabbage and soil under field conditions could be attributed to the different climate and soil properties, and the types of formulation had no apparent effect on half-life. Formulation type affected the initial concentrations and finally led to different terminal residues. Prolonged pre-harvest intervals are necessary to ensure that the products are sufficiently safe for consumption.
Collapse
Affiliation(s)
- You Zhou
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, PR China
| | - Kun Wang
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, PR China
| | - Chao Yan
- Environment and Plant Protection Research Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, PR China
| | - Wei-Sheng Li
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, PR China
| | - Hong Li
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, PR China
| | - Ning Zhang
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, PR China
| | - Zhi-Xiang Zhang
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, PR China.
| |
Collapse
|
13
|
|
14
|
Chan KH, Yan MK, To KKW, Lau SK, Woo PC, Cheng VCC, Li WS, Chan JFW, Tse H, Yuen KY. Use of the human colorectal adenocarcinoma (Caco-2) cell line for isolating respiratory viruses from nasopharyngeal aspirates. J Med Virol 2013; 85:874-9. [PMID: 23508913 PMCID: PMC7167083 DOI: 10.1002/jmv.23538] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [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] [Accepted: 01/03/2013] [Indexed: 12/24/2022]
Abstract
The human colorectal adenocarcinoma‐derived Caco‐2 cell line was evaluated as a means isolating common respiratory viruses from nasopharyngeal aspirates for the diagnosis of respiratory diseases. One hundred eighty‐nine direct immunofluorescence positive nasopharyngeal aspirates obtained from patients with various viral respiratory diseases were cultured in the presence of Caco‐2 cells or the following conventional cell lines: LLC‐MK2, MDCK, HEp‐2, and A549. Caco‐2 cell cultures effectively propagated the majority (84%) of the viruses present in nasopharyngeal aspirate samples compared with any positive cultures obtained using the panel cells (78%) or individual cell line MDCK (38%), HEp‐2 (21%), LLC‐MK2 (27%), or A549 (37%) cell lines. The differences against individual cell line were statistically significant (P = < 0.000001). Culture in Caco‐2 cells resulted in the isolation of 85% (36/42) of viruses which were not cultivated in conventional cell lines. By contrast, 80% (24/30) of viruses not cultivated in Caco‐2 cells were isolated using the conventional panel. The findings indicated that Caco‐2 cells were sensitive to a wide range of viruses and can be used to culture a broad range of respiratory viruses. J. Med. Virol. 85:874–879, 2013. © 2013 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- K H Chan
- Department of Microbiology, Queen Mary Hospital, Pokfulam, Hong Kong, Hong Kong Special Administrative Region, China.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Luo J, Li WS, Xu P, Zhang LY, Chen ZN. Zn2+ Responsive Bimodal Magnetic Resonance Imaging and Fluorescent Imaging Probe Based on a Gadolinium(III) Complex. Inorg Chem 2012; 51:9508-16. [PMID: 22880548 DOI: 10.1021/ic301308z] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Jian Luo
- State Key Laboratory of Structural Chemistry, Fujian Institute
of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002,
China
| | - Wei-Sheng Li
- State Key Laboratory of Structural Chemistry, Fujian Institute
of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002,
China
| | - Peng Xu
- State Key Laboratory of Structural Chemistry, Fujian Institute
of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002,
China
| | - Li-Yi Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute
of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002,
China
| | - Zhong-Ning Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute
of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002,
China
| |
Collapse
|
16
|
Li WS, Gilchrist M, Robertson S, Isles C. Bilateral renovascular disease with cardiorenal failure: intervene early or watch and wait? QJM 2012; 105:567-9. [PMID: 21558176 DOI: 10.1093/qjmed/hcr068] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- W S Li
- Renal Unit, Dumfries & Galloway Royal Infirmary, Dumfries, DG1 4AP, UK
| | | | | | | |
Collapse
|
17
|
|
18
|
|
19
|
Li WS, Luo J, Chen ZN. A gadolinium(III) complex with 8-amidequinoline based ligand as copper(II) ion responsive contrast agent. Dalton Trans 2011; 40:484-8. [DOI: 10.1039/c0dt01141j] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
20
|
Zhang XD, Hao JD, Li WS, Jin HJ, Yang J, Huang QM, Lu DS, Xu HK. Synergistic effect in treatment of C.I. Acid Red 2 by electrocoagulation and electrooxidation. J Hazard Mater 2009; 170:883-887. [PMID: 19501959 DOI: 10.1016/j.jhazmat.2009.05.050] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2008] [Revised: 05/11/2009] [Accepted: 05/11/2009] [Indexed: 05/27/2023]
Abstract
An aqueous C.I. Acid Red 2 solution was decolorized by electrolysis using iron as anode. The decolorization mechanism was investigated through experimental observations on the electrochemical behavior of C.I. Acid Red 2 on Pt rotating disk electrode, UV-visible spectra of the solution and IR spectra of the coagulated mixtures. It is found that the decolorization efficiency is high, over 98.0% after 40 min, and this high decolorization efficiency can be ascribed to the synergistic effect of electrocoagulation and electrooxidation. The electrocoagulation results from the electrogenerated iron hydroxide and the electrooxidation results from electrogenerated ferric ions. The results obtained from IR spectra shows that the decolorization of C.I. Acid Red 2 by electrooxidation is due to the partial or complete cleavage of C-N bonds in C.I. Acid Red 2.
Collapse
Affiliation(s)
- X D Zhang
- School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China
| | | | | | | | | | | | | | | |
Collapse
|
21
|
Abstract
Chitosan/siRNA nanoparticles to knock down FHL2 gene expression were reported in this work. The physicochemical properties such as particle size, surface charge, morphology and complex stability of chitosan nanoparticle-incorporated siRNA were evaluated. Nanoparticles which were formulated with chitosan/siRNA exhibited irregular, lamellar and dendritic structures with a hydrodynamic radius size of about 148 nm and net positive charges with zeta-potential value of 58.5 mV. The knockdown effect of the chitosan/siRNA nanoparticles on gene expression in FHL2 over-expressed human colorectal cancer Lovo cells was investigated. The result showed that FHL2 siRNA formulated within chitosan nanoparticles could knock down about 69.6% FHL2 gene expression, which is very similar to the 68.8% reduced gene expression when siRNA was transfected with liposome Lipofectamine. Western analysis further showed significant FHL-2 protein expression reduced by the chitosan/siRNA nanoparticles. The results also showed that blocking FHL2 expression by siRNA could also inhibit the growth and proliferation of human colorectal cancer Lovo cells. The current results demonstrated that chitosan-based siRNA nanoparticles were a very efficient delivery system for siRNA in vivo as previously reported.
Collapse
Affiliation(s)
- A M Ji
- Department of Pharmaceutical Science, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, People's Republic of China
| | | | | | | | | | | | | | | |
Collapse
|
22
|
Li BS, Gu LJ, Luo CY, Li WS, Jiang LM, Shen SH, Jiang H, Shen SH, Zhang B, Chen J, Xue HL, Tang JY. The downregulation of asparagine synthetase expression can increase the sensitivity of cells resistant to L-asparaginase. Leukemia 2006; 20:2199-201. [PMID: 17039232 DOI: 10.1038/sj.leu.2404423] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
23
|
Abstract
The catalytic activity of the bacterial phosphotriesterase (PTE) toward a series of chiral analogues of the chemical warfare agents sarin and soman was measured. Chemical procedures were developed for the chiral syntheses of the S(P)- and R(P)-enantiomers of O-isopropyl p-nitrophenyl methylphosphonate (sarin analogue) in high enantiomeric excess. The R(P)-enantiomer of the sarin analogue (k(cat)=2600 s(-1)) was the preferred substrate for the wild-type PTE relative to the corresponding S(P)-enantiomer (k(cat)=290 s(-1)). The observed stereoselectivity was reversed using the PTE mutant, I106A/F132A/H254Y where the k(cat) values for the R(P)- and S(P)-enantiomers were 410 and 4200 s(-1), respectively. A chemo-enzymatic procedure was developed for the chiral synthesis of the four stereoisomers of O-pinacolyl p-nitrophenyl methylphosphonate (soman analogue) with high diastereomeric excess. The R(P)R(C)-stereoisomer of the soman analogue was the preferred substrate for PTE. The k(cat) values for the soman analogues were measured as follows: R(P)R(C,) 48 s(-1); R(P)S(C), 4.8 s(-1); S(P)R(C), 0.3 s(-1), and S(P)S(C), 0.04 s(-1). With the I106A/F132A/H254Y mutant of PTE the stereoselectivity toward the chiral phosphorus center was reversed. With the triple mutant the k(cat) values for the soman analogues were found to be as follows: R(P)R(C,) 0.3 s(-1); R(P)S(C), 0.3 s(-1); S(P)R(C), 11s(-1), and S(P)S(C), 2.1 s(-1). Prior investigations have demonstrated that the S(P)-enantiomers of sarin and soman are significantly more toxic than the R(P)-enantiomers. This investigation has demonstrated that mutants of the wild-type PTE can be readily constructed with enhanced catalytic activities toward the most toxic stereoisomers of sarin and soman.
Collapse
Affiliation(s)
- W S Li
- Department of Chemistry, Texas A&M University, College Station, TX 77842-3012, USA
| | | | | | | | | |
Collapse
|
24
|
Wong AO, Li WS, Lee EK, Leung MY, Tse LY, Chow BK, Lin HR, Chang JP. Pituitary adenylate cyclase activating polypeptide as a novel hypophysiotropic factor in fish. Biochem Cell Biol 2001; 78:329-43. [PMID: 10949084] [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: 02/17/2023] Open
Abstract
Pituitary adenylate cyclase activating polypeptide (PACAP) is a novel member of the secretin-glucagon peptide family. In mammals, this peptide has been located in a wide range of tissues and is involved in a variety of biological functions. In lower vertebrates, especially fish, increasing evidence suggests that PACAP may function as a hypophysiotropic factor regulating pituitary hormone secretion. PACAP has been identified in the brain-pituitary axis of representative fish species. The molecular structure of fish PACAP is highly homologous to mammalian PACAP. The prepro-PACAP in fish, however, is distinct from that of mammals as it also contains the sequence of fish GHRH. In teleosts, the anterior pituitary is under direct innervation of the hypothalamus and PACAP nerve fibers have been identified in the pars distalis. Using the goldfish as a fish model, mRNA transcripts of PACAP receptors, namely the PAC1 and VPACI receptors, have been identified in the pituitary as well as in various brain areas. Consistent with the pituitary expression of PACAP receptors, PACAP analogs are effective in stimulating growth hormone (GH) and gonadotropin (GTH)-II secretion in the goldfish both in vivo and in vitro. The GH-releasing action of PACAP is mediated via pituitary PAC1 receptors coupled to the adenylate cyclase-cAMP-protein kinase A and phospholipase C-IP3-protein kinase C pathways. Subsequent stimulation of Ca2+ entry through voltage-sensitive Ca2+ channels followed by activation of Ca2+-calmodulin protein kinase II is likely the downstream mechanism mediating PACAP-stimulated GH release in goldfish. Although the PACAP receptor subtype(s) and the associated post-receptor signaling events responsible for PACAP-stimulated GTH-II release have not been characterized in goldfish, these findings support the hypothesis that PACAP is produced in the hypothalamus and delivered to the anterior pituitary to regulate GH and GTH-II release in fish.
Collapse
Affiliation(s)
- A O Wong
- Department of Zoology, University of Hong Kong.
| | | | | | | | | | | | | | | |
Collapse
|
25
|
Hill CM, Li WS, Cheng TC, DeFrank JJ, Raushel FM. Stereochemical specificity of organophosphorus acid anhydrolase toward p-nitrophenyl analogs of soman and sarin. Bioorg Chem 2001; 29:27-35. [PMID: 11300693 DOI: 10.1006/bioo.2000.1189] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [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: 11/22/2022]
Abstract
Organophosphorus acid anhydrolase (OPAA) catalyzes the hydrolysis of p-nitrophenyl analogs of the organophosphonate nerve agents, sarin and soman. The enzyme is stereoselective toward the chiral phosphorus center by displaying a preference for the R(P)-configuration of these analogs. OPAA also exhibits an additional preference for the stereochemical configuration at the chiral carbon center of the soman analog. The preferred configuration of the chiral carbon center is dependent upon the configuration at the phosphorus center. The enzyme displays a two- to four-fold preference for the R(P)-enantiomer of the sarin analog. The k(cat)/K(m) of the R(P)-enantiomer is 250 M(-1) s(-1), while that of the S(P)-enantiomer is 110 M(-1) s(-1). The order of preference for the stereoisomers of the soman analog is R(P)S(C) > R(P)R(C) > S(P)R(C) > S(P)S(C). The k(cat)/K(m) values are 36,300 M(-1)s(-1), 1250 M(-1) s(-1), 80 M(-1) s(-1) and 5 M(-1) s(-1), respectively. The R(P)S(C)-isomer of the soman analog is therefore preferred by a factor of 7000 over the S(P)S(C)-isomer.
Collapse
Affiliation(s)
- C M Hill
- Department of Chemistry, Texas A&M University, College Station, Texas 77842-3021, USA
| | | | | | | | | |
Collapse
|
26
|
Wang L, Li WS, Zhang QS. [Autogenous bone marrow graft for the management of nonunion of tibia]. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2001; 15:24-5. [PMID: 12563924] [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
OBJECTIVE To investigate the effect of percutaneous bone marrow graft for the management of nonunion of tibia. METHODS From March 1996 to June 2000, 56 cases with nonunion of tibia were treated by autogenous bone marrow graft. Among them, there were 38 males and 18 females, aged from 19 to 72 years. A marrow needle was inserted into the site of the nonunion under the X-ray, the autogenous bone marrow was injected into the site of nonunion. Compression bandage and appropriate immobilization material were applied after operation. This procedure was repeated every month, 2 or 3 times was needed. RESULTS 56 patients were followed-up for 4 months to 4 years and 2 months, averaged 2.8 years. Fracture healed in 53 cases and X-ray displayed fracture line disappeared and a great deal of continuous callus formed, and nonunion in 3 cases. CONCLUSION Percutaneous autogenous bone marrow graft can play a role in osteogenesis at the site of nonunion. It is easy to aspirate bone marrow and the operation is simple. It has clinical application value for the satisfactory effect.
Collapse
Affiliation(s)
- L Wang
- Department of Orthopedic Surgery, Harrison International Peace Hospital, Hengshui Hebei, P. R. China 053000
| | | | | |
Collapse
|
27
|
Zhu W, Li WS, Raushel FM, Vigh G. Experimental verification of a predicted, previously unseen separation selectivity pattern in the capillary electrophoretic separation of noncharged enantiomers by octakis(2,3-diacetyl-6-sulfato)-gamma-cyclodextrin. Electrophoresis 2000; 21:3249-56. [PMID: 11001223 DOI: 10.1002/1522-2683(20000901)21:15<3249::aid-elps3249>3.0.co;2-c] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [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: 11/09/2022]
Abstract
The capillary electrophoretic separation of noncharged enantiomers with single-isomer anionic resolving agents is reexamined here with the help of the charged resolving agent migration model. Two general model parameters have been identified that influence the effective mobility, separation selectivity and mobility difference curves of the enantiomers: parameter b, called binding selectivity (K(RCD)/K(SCD)), and parameter s, called size selectivity (mu(o)RCD/mu(o)SCD). Analysis of the model in terms of these parameters indicates that in addition to the known, previously observed separation selectivity vs. resolving agent concentration patterns, a new pattern, increasing separation selectivity with increasing resolving agent concentration, is also possible provided that (i) K(RCD)/K(SCD)<1 and mu(o)RCD/mu(o)SCD>1 and (K(RCD)mu(o)RCD)/(K(SCD)mu(o)SCD)>1, or (ii) K(RCD)/ K(SCD)>1 and mu(o)SCD/mu(o)SCD<1 and (K(RCD)mu(o)RCD)/(K(SCD)mu(o)SCD)<1. This hitherto unseen separation selectivity pattern was experimentally verified during the capillary electrophoretic separation of the enantiomers of O-isopropyl p-nitrophenyl methylphosphonate with the single-isomer octakis(2,3-diacetyl-6-sulfato)-gamma-cyclodextrin as resolving agent.
Collapse
Affiliation(s)
- W Zhu
- Texas A&M University, Department of Chemistry, College Station 77842-3012, USA
| | | | | | | |
Collapse
|
28
|
Li WS, Wei SC, Liang SZ. [The use of two-route Cisplatin chemotherapy in the treatment of oral squamous cell carcinoma]. Shanghai Kou Qiang Yi Xue 2000; 9:76-8. [PMID: 15014812] [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: 04/29/2023]
Abstract
OBJECTIVE To study the feasibility and efficacy of two-route cisplatin chemotherapy for locally advanced squamous cell carcinoma of oral cavity. METHODS 23 cases with clinical advanced biopsy-proven oral squamous cell carcinoma received intraarterial chemotherapy with cisplatin (DDP), Pingyangmycin (PYM) and 5-fluorouracilum (5-Fu), at the same time intravenous infusion with natrii thiosulfas (STS) for rescue. DDP at 40-60 mg/d, PYM at 16 mg/d and 5-Fu at 500 mg/d were applied for 5-7 consecutive days. RESULTS 7 cases (33.3%) obtained a complete response (CR), 11(52.4%) had partial response (PR) with an objective response rate (RR) of 85.7%. No severe toxicity was observed, whereas the most frequent grade I and II drug related toxicities were nausea and vomiting. No nephrotoxicity,hepatotoxicity and severe bone marrow suppression were noted. CONCLUSION Two-route cisplatin chemotherapy is, in our experience,a new,effective and safe therapeutic method for oral squamous cell carcinoma.
Collapse
Affiliation(s)
- W S Li
- Department of Oral Surgery,Children's Hospital of Chongqing Medical University. Chongqing 400014, China
| | | | | |
Collapse
|
29
|
Nandi PL, Li WS, Leung R, Chan J, Chan HT. Deep vein thrombosis and pulmonary embolism in the Chinese population. Hong Kong Med J 1998; 4:305-310. [PMID: 11830688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Abstract
Deep vein thrombosis and pulmonary embolism is a well-recognised major health problem in the West. There is a deep-rooted belief among clinicians that deep vein thrombosis is rare in Asians, particularly in the Chinese population. However, it appears that the incidence of venous thrombosis and pulmonary embolism is increasing in Chinese patients. Prophylaxis reduces the incidence of venous thrombosis by 66% and of pulmonary embolism by 50%--- prophylaxis should therefore be considered for Chinese patients who have a high risk of developing postoperative deep vein thrombosis. This report reviews the current literature on this subject.
Collapse
Affiliation(s)
- P L Nandi
- Department of Surgery, The University of Hong Kong Medical Centre, Queen Mary Hospital, Pokfulam, Hong Kong
| | | | | | | | | |
Collapse
|
30
|
Tsang SH, Chen J, Kjeldbye H, Li WS, Simon MI, Gouras P, Goff SP. Retarding photoreceptor degeneration in Pdegtm1/Pdegtml mice by an apoptosis suppressor gene. Invest Ophthalmol Vis Sci 1997; 38:943-50. [PMID: 9112990] [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: 02/04/2023] Open
Abstract
PURPOSE Mice (Pdegtm1/Pdegtm1) homozygous for a mutant allele of the gamma subunit of retinal cyclic guanosine monophosphate phosphodiesterase (PDE gamma) suffer a severe photoreceptor degeneration. To determine whether the antiapoptotic BCL2 gene is effective in delaying the cell death pathway in this new strain of mutant mice, a transgene encoding the BCL2 gene product was introduced by mating into the mutant background, and the resulting mice were examined for possible rescue of the retinal degeneration. METHODS Electroretinograms (ERGs) of the Pdegtm1/Pdegtm1 mice carrying BCL2 were taken to monitor the responses to light. Light and electron microscopy of sections were used to examine degeneration at different times after birth. RESULTS The ERGs of the mutants with the transgene were larger than those without the transgene at 2 and 3 weeks after birth. The maximum differences occurred at 2 weeks postpartum. At 4 weeks after birth, no ERG could be detected in either strain. Histologic analysis showed a greater preservation of photoreceptor nuclei in the Pdegtm1/Pdegtm1 mice containing the BCL2 transgene, which paralleled the electroretinography. CONCLUSIONS The introduction of an antiapoptotic transgene BCL2 can delay temporarily and partially the degeneration of photoreceptors in a new autosomal-recessive murine model of retinal degeneration.
Collapse
Affiliation(s)
- S H Tsang
- Howard Hughes Medical Institute, Department of Biochemistry and Molecular Biophysics, Columbia University, College of Physicians and Surgeons, New York, New York 10032, USA
| | | | | | | | | | | | | |
Collapse
|
31
|
Abstract
The treatment of rheumatoid arthritis remains difficult and often controversial. Plasma exchange has been advocated in some cases. In the present study 71 sessions of double filtration plasmapheresis (DFPP) were performed in 21 patients with rheumatoid arthritis in an average of 3.7 +/- 1.1 sessions per patient within 1-2 weeks. Seven patients had received prednisone, and all the patients had received nonsteroid anti-inflammatory drugs with poor results. Although after the DFPP therapy, only 2 patients were still receiving nonsteroid anti-inflammatory drugs, the function capacities improved in all patients. Five out of 8 positive rheumatoid factors became negative for the group. These results suggest that DFPP could be a regular therapy for rheumatoid arthritis.
Collapse
Affiliation(s)
- J D Liu
- Department of Nephrology, China Air Force Main Hospital, Beijing, P.R.C
| | | | | | | |
Collapse
|
32
|
Sayre LM, Naismith RT, Bada MA, Li WS, Klein ME, Tennant MD. trans-2-phenylcyclopropylamine is a substrate for and inactivator of horseradish peroxidase. Biochim Biophys Acta 1996; 1296:250-6. [PMID: 8814233 DOI: 10.1016/0167-4838(96)00084-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Horseradish peroxidase (HRP) is well known for mediating the electron-transfer oxidation of electron-rich aromatic 'donors' such as phenols and anilines, but has not been described to oxidize aliphatic amines. We here confirm the inability of HRP to oxidize typical aliphatic amines, even those which would exist significantly as free bases at the operative pH. In contrast, trans-2-phenylcyclopropylamine (2-PCPA) is both a substrate (turnover product is cinnamaldehyde) and a time-dependent inactivator of HRP. These activities of 2-PCPA are consistent with either a concerted or rapid sequential one-electron-oxidation/ring-opening to give an intermediate capable of covalent binding to the enzyme. 2-PCPA is the first known example of a simple aliphatic amine which serves as a substrate for HRP under turnover conditions.
Collapse
Affiliation(s)
- L M Sayre
- Department of Chemistry, Case Western Reserve University, Cleveland, OH 44106, USA
| | | | | | | | | | | |
Collapse
|
33
|
Abstract
As healthcare providers become increasingly decentralized and distributed, information systems support must follow suit by providing healthcare professionals with flexible, adaptable and secure views of medical data in a timely fashion. To this end, this paper introduces the notion of manifestations of medical image objects in a heterogeneous client environment. We define the fundamental building blocks of manifestations using object-oriented concepts. Examples are given of how constraints and rules can be used to govern the presentation of data within objects and for the environmental (e.g. hardware and network) and user defined factors (e.g. preferences) that act as inputs to manifestations. Using these techniques, we give several examples of user interactions with a system based on manifestations. This paper demonstrates how objects can be efficiently and effectively presented to users with various information appliances using manifestation techniques.
Collapse
Affiliation(s)
- N R Adam
- Center for Information Management, Integration, and Connectivity (CIMIC), Rutgers University, Newark, NJ 07102, USA
| | | | | |
Collapse
|
34
|
Weiner LM, Clark JI, Davey M, Li WS, Garcia de Palazzo I, Ring DB, Alpaugh RK. Phase I trial of 2B1, a bispecific monoclonal antibody targeting c-erbB-2 and Fc gamma RIII. Cancer Res 1995; 55:4586-93. [PMID: 7553634] [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: 01/25/2023]
Abstract
2B1 is a bispecific murine monoclonal antibody (BsMAb) with specificity for the c-erbB-2 and Fc gamma RIII extracellular domains. This BsMAb promotes the targeted lysis of malignant cells overexpressing the c-erbB-2 gene product of the HER2/neu proto-oncogene by human natural killer cells and mononuclear phagocytes expressing the Fc gamma RIII A isoform. In a Phase I clinical trial of 2B1, 15 patients with c-erbB-2-overexpressing tumors were treated with 1 h i.v. infusions of 2B1 on days 1, 4, 5, 6, 7, and 8 of a single course of treatment. Three patients were treated with daily doses of 1.0 mg/m2, while six patients each were treated with 2.5 mg/m2 and 5.0 mg/m2, respectively. The principal non-dose-limiting transient toxicities were fevers, rigors, nausea, vomiting, and leukopenia. Thrombocytopenia was dose limiting at the 5.0 mg/m2 dose level in two patients who had received extensive prior myelosuppressive chemotherapy. Murine antibody was detectable in serum following 2B1 administration, and its bispecific binding properties were retained. The pharmacokinetics of this murine antibody were variable and best described by nonlinear kinetics with an average t 1/2 of 20 h. Murine antibody bound extensively to all neutrophils and to a proportion of monocytes and lymphocytes. The initial 2B1 treatment induced more than 100-fold increases in circulating levels of tumor necrosis factor-alpha, interleukin 6, and interleukin 8 and lesser rises in granulocyte-monocyte colony-stimulating factor and IFN-gamma. Brisk human anti-mouse antibody responses were induced in 14 of 15 patients. Several minor clinical responses were observed, with reductions in the thickness of chest wall disease in one patient with disseminated breast cancer. Resolution of pleural effusions and ascites, respectively, were noted in two patients with metastatic colon cancer, and one of two liver metastases resolved in a patient with metastatic colon cancer. Treatment with 2B1 BsMAb has potent immunological consequences. The maximum tolerated dose and Phase II daily dose for patients with extensive prior myelosuppressive chemotherapy was 2.5 mg/m2. Continued dose escalation is required to identify the maximally tolerated dose for patients who have been less heavily pretreated.
Collapse
Affiliation(s)
- L M Weiner
- Department of Medical Oncology, Fox Chase Cancer Center, Philadelphia, Pennsylvania 19111, USA
| | | | | | | | | | | | | |
Collapse
|
35
|
Chen T, Li WS, Zhang CM. [Clinical and experimental study of yangxueshengru oral liquor in promoting puerperal breast milk secretion]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1995; 15:528-31. [PMID: 8704438] [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: 02/01/2023]
Abstract
Applying Yangxueshengru Oral Liquor (YXSR) to treat 103 cases of puerperal insufficient lactation. Six hours after delivery, the parturient took YXSR, its effective rate was 98.06%. The results revealed that it could improve breast milk secretion significantly and increase daily lactation amount of parturient, insufficient lactation rate was reduced. The content of protein and trace elements (Fe, Zn and Mn, etc) in colostrum increased, the difference between medicated group and control group was significant (P < 0.05-0.001). Animal experiment showed that YXSR could increase the response of prolactin (PRL) level of model rats (P < 0.01), the serum, PRL and cortisol level of the rats were also raised significantly (P < 0.01).
Collapse
Affiliation(s)
- T Chen
- Yichang Medical High School, Hubei
| | | | | |
Collapse
|
36
|
Patel RN, Banerjee A, Ko RY, Howell JM, Li WS, Comezoglu FT, Partyka RA, Szarka FT. Enzymic preparation of (3R-cis)-3-(acetyloxy)-4-phenyl-2-azetidinone: a taxol side-chain synthon. Biotechnol Appl Biochem 1994; 20:23-33. [PMID: 7917063] [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: 01/27/2023]
Abstract
A key chiral intermediate [(3R-cis)-3-(acetyloxy)-4-phenyl-2-azetidinone (2)] for the semi-synthesis of paclitaxel (taxol; 5), an anti-cancer compound, was prepared by an enzymic process. The stereoselective enzymic hydrolysis of cis-3-(acetyloxy)-4-phenyl-2-azetidinone (1) to the corresponding (S)-(-)-alcohol (3) was carried out using various lipases. Lipase PS-30 (Pseudomonas cepacia) and BMS (Bristol-Myers Squibb) lipase (Pseudomonas sp. SC13856) catalysed hydrolysis of the undesired enantiomer of racemic compound 1, producing the (S)-(-)-alcohol (3) and the desired (R)-(+)-acetate (2). Reaction yields of > 96% and optical purities of > 99.5% were obtained. For a very efficient enzyme source (BMS lipase), a lipase fermentation using Pseudomonas sp. SC13856 was developed. In a fed-batch process using soybean oil, the fermentation resulted in 1500 units of extracellular lipase activity/ml. Crude BMS lipase (1.7 kg, containing 140,000 units/g) was recovered from the filtrate by ethanol precipitation. BMS lipase and commercially available lipase PS-30 were independently immobilized on Accurel polypropylene. These immobilized lipases were re-used (ten cycles) without loss of enzyme activity, productivity or optical purity of the product. The enzymic reaction process was scaled up to 75 and 150 litres using immobilized BMS lipase and lipase PS-30 respectively. From the reaction mixture, compound 2 was isolated in 88-90 mol% yield and 99.5% optical purity. A purity of 99.9 (area %) was demonstrated by g.c. for isolated compound 2.
Collapse
Affiliation(s)
- R N Patel
- Bristol-Myers Squibb Pharmaceutical Research Institute, New Brunswick, NJ
| | | | | | | | | | | | | | | |
Collapse
|
37
|
Li WS, Gu SW, Au-Yeung TC, Yeung YY. Effects of the parabolic potential and confined phonons on the polaron in a quantum wire. Phys Rev B Condens Matter 1992; 46:4630-4637. [PMID: 10004219 DOI: 10.1103/physrevb.46.4630] [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: 11/07/2022]
|
38
|
Abstract
Methyl 16-nor-16-carboxydehydroabietate (22), 16-nor-16-carboxydehydroabietinol acetate (23), methyl 7-keto-16-nor-16-carboxydehydroabietate (29), 16-nor-16-carboxydehydroabietic acid (30), 16-nor-16-carboxydehydroabietinol (31), 7-keto-16-nor-16-carboxydehydroabietic acid (32), methyl 7-hydroxy-16-nor-16-carboxydehydroabietate (33), and 7-hydroxy-16-nor-16-carboxydehydroabietic acid (34) were prepared from dehydroabietic acid. Only 22 and 32 had weak anti-inflammatory activity.
Collapse
Affiliation(s)
- W S Li
- Department of Agricultural Chemistry, National Pingtung Institute of Agriculture, Taiwan, Republic of China
| | | |
Collapse
|
39
|
Hong JY, Smith T, Lee MJ, Li WS, Ma BL, Ning SM, Brady JF, Thomas PE, Yang CS. Metabolism of carcinogenic nitrosamines by rat nasal mucosa and the effect of diallyl sulfide. Cancer Res 1991; 51:1509-14. [PMID: 1997191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Rat nasal cavity is one of the target organs for carcinogenesis induced by N-nitrosodimethylamine (NDMA), N-nitrosodiethylamine (NDEA), and 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK). The present work investigated the metabolism of these nitrosamines by rat nasal microsomes, as well as the possible modulating factors. Microsomes prepared from rat nasal mucosa were efficient in metabolizing these nitrosamines. In general, the metabolism of the nitrosamines was slightly higher in 9-week-old rats than in 4-week-old animals, and there was no sex-related difference. Fasting of rats for 48 h, which is known to induce hepatic cytochrome P450IIE1 and NDMA metabolism, did not increase the nasal metabolism of NDMA, NDEA, or NNK. Pretreatment of rats with acetone, another inducer of hepatic P450IIE1, did not increase the metabolism of NDMA. Furthermore, it decreased the nasal metabolism of NDEA and NNK. Immunoinhibition studies suggest that, in the nasal mucosa, P450IIE1 is only partially responsible for the oxidation of NDMA and other P450 isozymes are responsible for the metabolism of NDEA. A single p.o. pretreatment of male rats with diallyl sulfide (DAS), a component of garlic oil, caused a significant decrease in the oxidative metabolism of NDEA and NNK in rat nasal mucosa. Whereas the nasal metabolism of NDMA was reduced by DAS pretreatment, there was no change in the amount of the nasal microsomal proteins immunoreactive with the antibodies against P450IIE1. The inhibitory effect of DAS on the nasal oxidative metabolism of NDMA, NDEA, and NNK was also observed in experiments in vitro. The results demonstrate the ability of nasal mucosa to metabolically activate these nitrosamines and the inhibition of this process by DAS, suggesting that DAS may be effective in inhibiting the related nasal tumorigenesis.
Collapse
Affiliation(s)
- J Y Hong
- Department of Chemical Biology and Pharmacognosy, College of Pharmacy, Rutgers University, Piscataway, New Jersey 08855-0789
| | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Qiu MC, Wang JY, Li WS, Qi QL, Shao Q, Liu W, Gao ZH, Li SL. Dynamic study on iliac trabeculae of normal Chinese. Chin Med J (Engl) 1990; 103:363-8. [PMID: 2118051] [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: 12/30/2022] Open
Abstract
We studied 41 iliac bone blocks taken by biopsies from normal Chinese who were divided into several groups by age. On the schedule of 3-11-3-5 days, double tetracycline labellings were administered before bone biopsies. Ten microns undecalcified sections were made with Reichert-Jung microtome and analyzed with Zeizz MOP-Videoplan by light and fluorescent microscopy. The results showed that bone formation had a peak value at adolescence and the mean wall thickness decreased gradually with age. Bone dynamics fluctuated with age because of endocrinological changes in the intrinsic environment. The data we obtained may be used as a reference for clinical investigation of various metabolic bone disorders.
Collapse
Affiliation(s)
- M C Qiu
- Department of Endocrinology, Affiliated Hospital of Tianjin Medical College
| | | | | | | | | | | | | | | |
Collapse
|
41
|
Jin JS, Zhao ZH, Wei BH, Hu YF, Chen LH, Li WS, He JR, Liang DY, Zheng MZ, Li JD. Clinical and experimental studies of chronic gastritis in patients with qi-deficiency of spleen. J TRADIT CHIN MED 1989; 9:297-8. [PMID: 2630823] [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: 01/01/2023]
|
42
|
Liao JZ, Chai ZN, Li WS, Liu XF, Wang S, Qin L, Guo WQ. Pharmacologic effects of codonopsis pilosula-astragalus injection in the treatment of CHD patients. J TRADIT CHIN MED 1988; 8:1-8. [PMID: 3393012] [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: 01/05/2023]
|
43
|
Liang M, Li WS, Wang YC. [Effect of intravenous procaine anesthesia on methemoglobin levels]. Zhonghua Wai Ke Za Zhi 1987; 25:368-70, 383. [PMID: 3691245] [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: 01/07/2023]
|
44
|
Li WS, Liao JZ, Yue ZS, Liu XF, Wu ZM, Kang TP. Effects of codonopsis pilosula-astragalus injection on platelet aggregation and activity of PGI2-like substance. J TRADIT CHIN MED 1986; 6:9-12. [PMID: 3525999] [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: 01/06/2023]
|
45
|
Chen GY, Yi DS, Li WS, Chen SZ, Wu G. Adhesion-precipitation technic for Schistosome cercariae recovery from natural waters. Chin Med J (Engl) 1982; 95:762-4. [PMID: 6817982] [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: 01/22/2023] Open
|
46
|
Chen ZR, Sun ZL, Lu FH, Wu D, Jin JS, He JR, Li WS, Wang LH, Li YZ, Liu CA. Clinical observation and experimental study on 300 anorectic children treated with stomachic granules. J TRADIT CHIN MED 1982; 2:157-61. [PMID: 6765704] [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]
|
47
|
Abstract
Three phenolic constituents of Magnolia grandiflora L. were shown to possess significant antimicrobial activity using an agar well diffusion assay. Magnolol, honokiol, and 3.5'-diallyl-2'-hydroxy-4-methoxybiphenyl exhibited significant activity against Gram-positive and acid-fast bacteria and fungi. The minimum inhibitory concentrations were determined for each compound using a twofold serial dilution assay.
Collapse
|