1
|
Li T, Xie Q, Fang YY, Sun Y, Wang XM, Luo Z, Yan GL, He JB, Zheng XQ. Prognostic value of CYFRA 21 - 1 and Ki67 in advanced NSCLC patients with wild-type EGFR. BMC Cancer 2023; 23:295. [PMID: 37004004 PMCID: PMC10064697 DOI: 10.1186/s12885-023-10767-9] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Accepted: 03/23/2023] [Indexed: 04/03/2023] Open
Abstract
BACKGROUND The prognostic value of cytokeratin 19 fragment (CYFRA 21 - 1) and Ki67 in advanced non-small cell lung cancer (NSCLC) patients with wild-type epidermal growth factor receptor (EGFR) remains to be explored. METHODS In this study, 983 primary NSCLC patients from January 2016 to December 2019 were retrospectively reviewed. Finally, 117 advanced NSCLC patients with wild-type EGFR and 37 patients with EGFR mutation were included and prognostic value of CYFRA 21 - 1 and Ki67 were also identified. RESULTS The patients age, smoking history and the Eastern Corporative Oncology Group (ECOG) performance scores were significantly different between CYFRA21-1 positive and negative groups (p < 0.05), while no significant differences were found in Ki67 high and low groups. The results of over survival (OS) demonstrated that patients with CYFRA21-1 positive had markedly shorter survival time than CYFRA21-1 negative (p < 0.001, For whole cohorts; p = 0.002, For wild-type EGFR). Besides, patients with wild-type EGFR also had shorter survival times than Ki67 high group. Moreover, In CYFRA 21 - 1 positive group, patients with Ki67 high had obviously shorter survival time compared to patients with Ki67 low (median: 24vs23.5 months; p = 0.048). However, Ki67 could not be used as an adverse risk factor for patients with EGFR mutation. Multivariate cox analysis showed that age (HR, 1.031; 95%CI, 1.003 ~ 1.006; p = 0.028), Histopathology (HR, 1.760; 95%CI,1.152 ~ 2.690; p = 0.009), CYFRA 21 - 1 (HR, 2.304; 95%CI,1.224 ~ 4.335; p = 0.01) and Ki67 (HR, 2.130; 95%CI,1.242 ~ 3.652; p = 0.006) served as independent prognostic risk factor for advanced NSCLC patients. CONCLUSIONS Our finding indicated that CYFRA 21 - 1 was an independent prognostic factor for advanced NSCLC patients and Ki67 status could be a risk stratification marker for CYFRA 21 - 1 positive NSCLC patients with wild-type EGFR.
Collapse
Affiliation(s)
- Tao Li
- Department of Laboratory Medicine, The Second Affiliated and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- School of Laboratory Medicine and Life Sciences, The Key Laboratory of Laboratory Medicine, Wenzhou Medical University, Ministry of Education of China, Wenzhou, China
| | - Qi Xie
- Department of Laboratory Medicine, The Second Affiliated and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- School of Laboratory Medicine and Life Sciences, The Key Laboratory of Laboratory Medicine, Wenzhou Medical University, Ministry of Education of China, Wenzhou, China
| | - Yang-Yang Fang
- Department of Laboratory Medicine, The Second Affiliated and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- School of Laboratory Medicine and Life Sciences, The Key Laboratory of Laboratory Medicine, Wenzhou Medical University, Ministry of Education of China, Wenzhou, China
| | - Yi Sun
- Department of Laboratory Medicine, The Second Affiliated and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- School of Laboratory Medicine and Life Sciences, The Key Laboratory of Laboratory Medicine, Wenzhou Medical University, Ministry of Education of China, Wenzhou, China
| | - Xiao Ming Wang
- Department of Laboratory Medicine, The Second Affiliated and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- School of Laboratory Medicine and Life Sciences, The Key Laboratory of Laboratory Medicine, Wenzhou Medical University, Ministry of Education of China, Wenzhou, China
| | - Zhu Luo
- Department of Laboratory Medicine, The Second Affiliated and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- School of Laboratory Medicine and Life Sciences, The Key Laboratory of Laboratory Medicine, Wenzhou Medical University, Ministry of Education of China, Wenzhou, China
| | - Gui-Ling Yan
- Department of Laboratory Medicine, The Second Affiliated and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- School of Laboratory Medicine and Life Sciences, The Key Laboratory of Laboratory Medicine, Wenzhou Medical University, Ministry of Education of China, Wenzhou, China
| | - Jian-Bo He
- Department of Respiratory Medicine, The Second Affiliated and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.
| | - Xiao-Qun Zheng
- Department of Laboratory Medicine, The Second Affiliated and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.
- School of Laboratory Medicine and Life Sciences, The Key Laboratory of Laboratory Medicine, Wenzhou Medical University, Ministry of Education of China, Wenzhou, China.
| |
Collapse
|
2
|
Yan GL, Yang MM, Zuo PF, Wang D, Chen L, Li YJ, Chen LJ, Feng Y, Tang CC, Ma GS. [Effects of remote ischemic preconditioning on contrast-induced acute kidney injury after percutaneous coronary intervention in patients with chronic total occlusion]. Zhonghua Yi Xue Za Zhi 2021; 101:776-781. [PMID: 33765717 DOI: 10.3760/cma.j.cn112137-20200627-01955] [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 effect of remote ischemic preconditioning (RIPC) on contrast-induced acute kidney injury (CI-AKI) in patients with chronic total occlusion (CTO) after percutaneous coronary intervention (PCI). Methods: A total of 282 patients undergoing PCI at Zhongda Hospital Affiliated to Southeast University between June 2017 and January 2019 were prospectively enrolled. The patients were randomly divided into RIPC group (n=142) and control group (n=140). CI-AKI was defined as an increase in level of cystatin C (CysC)≥10% above baseline at 24 h after contrast administration. Baseline characteristics and the incidence of CI-AKI were compared between the two groups. The multivariate logistic regression analysis was further used to analyze the independent risk factors of CI-AKI. Results: There were no significant differences in age, gender, smoking, hypertension, diabetes, stroke and old myocardial infarction, coronary artery bypass graft surgery, previous PCI history and laboratory test indicators, target vessel and pathological characteristics of CTO lesions, contrast agent dosage, J-CTO (Multicenter CTO Registry in Japan) score, SYNTAX (Synergy between Percutaneous Coronary Intervention with Taxus and Cardiac Surgery) score, PCI success rate and stent number between the two groups (P>0.05). The incidence of CI-AKI was significantly lower (18.3% vs 29.3%, P=0.036) in RIPC group than that of control group. Multivariate logistic analysis found that creatinine [odds ratio (OR)=1.018,95%CI: 1.006-1.030, P=0.003], CysC (OR=5.200, 95%CI:2.714-9.963, P<0.001),contrast agent dosage (OR=1.013,95%CI: 1.007-1.019, P<0.001) and J-CTO score (OR=1.834, 95%CI: 1.145-2.939, P=0.012) were independent risk factors of CI-AKI. However, RIPC was an independent protective factor of CI-AKI (OR=0.391, 95%CI: 0.199-0.765, P=0.006). Conclusion: RIPC before contrast agent administration prevents CI-AKI in CTO patients undergoing PCI.
Collapse
Affiliation(s)
- G L Yan
- Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Nanjing 210009, China
| | - M M Yang
- Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Nanjing 210009, China
| | - P F Zuo
- Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Nanjing 210009, China
| | - D Wang
- Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Nanjing 210009, China
| | - L Chen
- Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Nanjing 210009, China
| | - Y J Li
- Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Nanjing 210009, China
| | - L J Chen
- Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Nanjing 210009, China
| | - Y Feng
- Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Nanjing 210009, China
| | - C C Tang
- Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Nanjing 210009, China
| | - G S Ma
- Department of Cardiology, Zhongda Hospital, Medical School of Southeast University, Nanjing 210009, China
| |
Collapse
|
3
|
Li T, Yan GL, Luo Z, Xie Q, Lai MM, Chen ZG, Zheng XQ. Chronic Pediatric Immune Thrombocytopenia Is Not Associated With Herpes Virus Infection Status. Front Pediatr 2021; 9:641535. [PMID: 34926334 PMCID: PMC8678596 DOI: 10.3389/fped.2021.641535] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 11/01/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Immune thrombocytopenia (ITP) is characterized by non-chronic (transient, <12 months) and chronic (≥12 months) decline in the number of platelets. Herpes virus infections have been shown, in many studies, to be associated with the development of ITP. However, it remains unclear whether the herpes virus infection status is associated with the chronic ITP. Methods: We reviewed 480 primary pediatric patients with ITP in the period from January 2017 to December 2019. The prevalence of herpes virus antibodies including the Cytomegalovirus (CMV), Herpes simplex virus 1 (HSV-1), Herpes simplex virus 2 (HSV-2), and Epstein Barr virus were recorded. The levels of serum complement C3 and C4, T (CD3+, CD4+, CD8+), B (CD19+) lymphocytes, and natural killer (CD16+ 56+) cells were also analyzed. Multivariate analysis was used to evaluate the associations between chronic ITP and herpes virus infection status. Results: Compared with non-chronic, patients with chronic ITP had older age (≥3 years), lower levels of hemoglobin and complement C3, and lower probability of CMV and HSV-2 infections (IgM positive; p < 0.05). Patients with herpes virus infection had lower serum platelet counts (p < 0.001), lower complement C3 levels and lower CD4+/CD8+ cells ratio (p < 0.05). Furthermore, platelet counts were positively correlated with CD4+/CD8+ cells ratios (r = 0.519; p = 0.0078), and negatively correlated with T cells (CD3+: r = -0.458, p = 0.0213; CD8+: r = -0.489, p = 0.0131). Multivariate analysis showed that age (OR, 1.644; 95%CI, 1.007-2.684; p = 0.047) was an adverse risk factor for chronic ITP and CMV IgM positive (OR, 0.241; 95%CI, 0.072-0.814; p = 0.022) had lower risk of chronic ITP development, while other herpes virus infection statuses and clinical features were not. Conclusion: Although herpes virus infections were associated with the onset of ITP, our findings indicated that herpes virus infection status might not be a risk factor for chronic ITP.
Collapse
Affiliation(s)
- Tao Li
- Department of Laboratory Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,The Key Laboratory of Laboratory Medicine, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Ministry of Education of China, Wenzhou, China
| | - Gui-Ling Yan
- Department of Laboratory Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,The Key Laboratory of Laboratory Medicine, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Ministry of Education of China, Wenzhou, China
| | - Zhu Luo
- Department of Laboratory Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,The Key Laboratory of Laboratory Medicine, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Ministry of Education of China, Wenzhou, China
| | - Qi Xie
- Department of Laboratory Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,The Key Laboratory of Laboratory Medicine, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Ministry of Education of China, Wenzhou, China
| | - Mei-Mei Lai
- Department of Laboratory Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Zhan-Guo Chen
- Department of Laboratory Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xiao-Qun Zheng
- Department of Laboratory Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,The Key Laboratory of Laboratory Medicine, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Ministry of Education of China, Wenzhou, China
| |
Collapse
|
4
|
Chen YL, Meng L, Yan GL, Yang ZZ, Huang ZP, Zhang YS, Zhao Z, Wang CC, Bao Y, Xiang H, Yin H, Chen LF, Xiong YY, Wang L, Li WM. [Prognostic significance of early molecular response after second-line treatment with dasatinib of chronic myeloid leukemia patients]. Zhonghua Xue Ye Xue Za Zhi 2020; 40:608-611. [PMID: 32397028 PMCID: PMC7364892 DOI: 10.3760/cma.j.issn.0253-2727.2019.07.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Y L Chen
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - L Meng
- Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - G L Yan
- Xiangyang Central Hospital, Xiangyang 441021, China
| | - Z Z Yang
- Suizhou Central Hospital, Suizhou 441300, China
| | - Z P Huang
- Jingzhou Central Hospital, Jingzhou 434020, China
| | - Y S Zhang
- The First People's Hospital of Jingzhou, Jingzhou 434000, China
| | - Z Zhao
- MinDa Hospital Affiliated to Hubi Institute for Nationalities, Enshi 445000, China
| | - C C Wang
- Shiyan Taihe Hospital, Shiyan 442000, China
| | - Y Bao
- The First People's Hospital of Xiangyang, Xiangyang 441000, China
| | - H Xiang
- Central Hospital of Enshi Autonomous Prefecture, Enshi 445000, China
| | - H Yin
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - L F Chen
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Y Y Xiong
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - L Wang
- The First People's Hospital of Jingmen, Jingmen 448000, China
| | - W M Li
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| |
Collapse
|
5
|
Chen YL, Wang L, Yan GL, Yang ZZ, Huang ZP, Zhang YS, Zhao Z, Wan CC, Bao Y, Xiang H, Yin H, Chen LF, Xiong YY, Meng L, Li WM. [Efficacy and safety of domestic dasatinib as second-line treatment for chronic myeloid leukemia patients in the chronic phase]. Zhonghua Xue Ye Xue Za Zhi 2019; 40:98-104. [PMID: 30831623 PMCID: PMC7342660 DOI: 10.3760/cma.j.issn.0253-2727.2019.02.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
目的 探讨国产酪氨酸激酶抑制剂(TKI)达沙替尼(商品名:依尼舒)二线治疗慢性髓性白血病慢性期(CML-CP)患者的疗效及安全性。 方法 回顾性分析2016年3月至2018年7月湖北省CML协作组成员医院收治的二线服用国产达沙替尼的CML-CP患者的病例资料,统计患者治疗3、6和12个月时最佳反应率、累积完全细胞遗传学反应(CCyR)率、累积主要分子学反应(MMR)率、无进展生存(PFS)、无事件生存(EFS)情况及不良反应情况。 结果 共纳入83例CML-CP患者,中位随访时间为23(4~45)个月,达沙替尼治疗3、6、12个月最佳反应率分别为77.5%(54/71)、72.6%(61/75)、60.7%(51/69)。至随访截止,累积CCyR率、MMR率分别为65.5%(55/80)、57.1%(48/73),达CCyR和MMR的中位时间均为3个月。随访时间内,PFS率为94.0%(79/83),EFS率为77.4%(65/83)。国产达沙替尼最常见非血液学不良反应为水肿(32.5%),其次为皮疹瘙痒(18.1%)、乏力(13.3%),血液学不良反应主要有血小板减少(31.3%)、白细胞减少(19.3%)和贫血(6.0%)。 结论 国产达沙替尼二线治疗CML-CP患者具有较好的疗效及安全性,可作为CML-CP患者的治疗选择。
Collapse
Affiliation(s)
- Y L Chen
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - L Wang
- The First People's Hospital of Jingmen, Jingmen 448000, China
| | - G L Yan
- Xiangyang Central Hospital, Xiangyang 441021, China
| | - Z Z Yang
- Suizhou Central Hospital, Suizhou 441300, China
| | - Z P Huang
- Jingzhou Central Hospital, Jingzhou 434020, China
| | - Y S Zhang
- The First People's Hospital of Jingzhou, Jingzhou 434000, China
| | - Z Zhao
- Min Da Hospital Affiliated to Hubei Institute for Nationalities, Enshi 445000, China
| | - C C Wan
- Shiyan Taihe Hospital, Shiyan 442000, China
| | - Y Bao
- The First People's Hospital of Xiangyang, Xiangyang 441000, China
| | - H Xiang
- Central Hospital of Enshi Autonomous Prefecture, Enshi 445000, China
| | - H Yin
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - L F Chen
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Y Y Xiong
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - L Meng
- Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - W M Li
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| |
Collapse
|
6
|
Yan GL, Guo YM, Yuan JM, Liu D, Zhang BK. Sodium alginate oligosaccharides from brown algae inhibit Salmonella Enteritidis colonization in broiler chickens. Poult Sci 2011; 90:1441-8. [PMID: 21673159 DOI: 10.3382/ps.2011-01364] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The effects of sodium alginate oligosaccharides (sAO) on growth performance, cecal microbiota, Salmonella translocation to internal organs, and mucosal immune responses to challenge with Salmonella enterica serovar Enteritidis in broiler chickens were investigated. We designed an experiment with a 2 × 3 factorial arrangement, in which 3 feed treatments with supplementation of sAO at 0 (controls), 0.04, or 0.2% were provided in the diet for birds not challenged or challenged with Salmonella Enteritidis. There were 5 randomly placed replicate pens for each treatment. At 8 to 12 d of age, one-half the poults were orally gavaged with 10(8) cfu of Salmonella Enteritidis and the nonchallenged groups were inoculated with sterile PBS. Body weight loss and mortality resulting from Salmonella infection were mitigated by the addition of sAO. Supplementation of sAO at 0.2% was the most effective concentration for reducing Salmonella colonization and increasing the number of lactic acid bacteria in the cecum of chickens challenged with Salmonella Enteritidis. Cecal Salmonella Enteritidis-specific IgA production was significantly increased by sAO at 0.2% at 5 d postchallenge compared with the other treatments and was maintained at higher levels at the 2 dosages of sAO at 10 d postchallenge. With Salmonella Enteritidis challenge, sAO at 0.04% showed an anti-inflammatory effect through upregulation of interleukin (IL)-10 expression in the cecal tonsils. The supplementation level of 0.2% showed dramatic immunostimulatory activity by inducing interferon-γ, IL-10, and IL-1β mRNA expression in cecal tonsils of nonchallenged birds. However, the high level of sAO induced a robust mucosal immune response in the absence of a challenge, and this may have led to a decline in BW. These findings suggest that dietary sAO can decrease Salmonella colonization and improve intestinal barrier function and performance of chickens.
Collapse
Affiliation(s)
- G L Yan
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | | | | | | | | |
Collapse
|
7
|
Luo GM, Qi DH, Zheng YG, Mu Y, Yan GL, Yang TS, Shen JC. ESR studies on reaction of saccharide with the free radicals generated from the xanthine oxidase/hypoxanthine system containing iron. FEBS Lett 2001; 492:29-32. [PMID: 11248231 DOI: 10.1016/s0014-5793(01)02226-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The free radicals generated from the iron containing system of xanthine oxidase and hypoxanthine (Fe-XO/HX) were directly detected by using spin trapping. It was found that not only superoxide anion (O(2)*-) and hydroxyl radical (OH*), but also alkyl or alkoxyl radicals (R*) were formed when saccharides such as glucose, fructose and sucrose were added into the Fe-XO/HX system. The generated amount of R* was dependent on the kind and concentration of saccharides added into the Fe-XO/HX system and no R* were detected in the absence of saccharides, indicating that there is an interaction between the saccharide molecules and the free radicals generated from the Fe-XO/HX system and saccharide molecules are essential for generating R* in the Fe-XO/HX system. It is expected that the toxicity of R* would be greater than of hydrophilic O(2)*- and OH* because they are liposoluble and their lives are longer and the active sites of biomolecules are closely related with lipophilic phase, thus they can damage cells more seriously than O(2)*- and OH*. The R* generated from the saccharide containing Fe-XO/HX can be effectively scavenged by selenium containing abzyme (Se-abzyme), indicating Se-abzyme is a promising antioxidant.
Collapse
Affiliation(s)
- G M Luo
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, Jilin University, Changchun, PR China.
| | | | | | | | | | | | | |
Collapse
|
8
|
Yan GL. [Electric field effect of cell calcium]. Zhongguo Yi Liao Qi Xie Za Zhi 2000; 24:279-282. [PMID: 12583024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The mechanism of biological effects of extremely-low-frequency electromagnetic field involve induced changes of Ca2+ transport through plasma membrane ion channels. In this paper we discusses the effects of externally applied Vi = 30 sin 100 pi t(mV) on the induced Ca2+ flux of HL-60 leukemia cells. After signal excitation or sham excitation the response of the intracellular calcium levels changes not only with the different concentrations of the activator but also with the activated states of cells.
Collapse
Affiliation(s)
- G L Yan
- Shanghai Medical Instrumentation College
| |
Collapse
|
9
|
Liu JQ, Gao SJ, Luo GM, Yan GL, Shen JC. Artificial imitation of glutathione peroxidase with 6-selenium-bridged beta-cyclodextrin. Biochem Biophys Res Commun 1998; 247:397-400. [PMID: 9642139 DOI: 10.1006/bbrc.1998.8545] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
On the basis of cyclodextrin, 6-selenium bridged beta-cyclodextrin (6-beta-CD-Se-Se-beta-CD, known as 6-SeCD) was synthesized by the selective tosylation of beta-cyclodextrin and nucleophilic displacement by sodium hydroselenide to imitate glutathione peroxidase (GPX). The GPX activity of diselenide 6-SeCD is 4.3 times that of PZ51. The structure of the mimic 6-SeCD was characterized by means of laser mass spectroscopy, elemental analysis, IR and 1H NMR. The selenium content and its valence in 6-SeCD were determined by means of X-ray photoelectron spectra. Kinetics of the mimic showed that its enzymatic behavior was similar to that of native GPX.
Collapse
Affiliation(s)
- J Q Liu
- The National Laboratory of Enzyme Engineering, Jilin University, Changchun, 130023, P.R. China
| | | | | | | | | |
Collapse
|
10
|
Zhang WY, Teng H, Wang LY, Yan GL. Serum SP1, HPL levels and urinary estrogen/creatinine ratio in the detection of low birth weight. Chin Med J (Engl) 1993; 106:437-40. [PMID: 8222896] [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: 01/29/2023] Open
Abstract
Serum pregnancy specific beta 1 glycoprotein (SP1), human placental lactogen (HPL) and urinary estrogen/creatinine (E/C) ratio levels were determined to study their clinical significance in predicting low birth weight (LBW) in women with normal pregnancy and patients with LBW. The results showed that the sensitivity of urinary E/C ratio was better than that of serum SP1 and HPL, and was increased gradually with the reduction of fetal weight. The specificity in predicting LBW decreased gradually with the increase of serum SP1 and HPL levels and urinary E/C ratio. When serum SP1 level was less than 50 mg/L, HPL less than 2.0 mg/L, and E/C ratio less than 10, their specificity could increase over 90%. It is suggested that multi-indexes measurement would improve the accuracy for predicting LBW. We conclude that SP1, HPL and E/C ratio measurement could be an useful index for predicting LBW.
Collapse
Affiliation(s)
- W Y Zhang
- Department of Obstetrics and Gynecology, Second Teaching Hospital, Norman Bethune University of Medical Sciences, Changchun
| | | | | | | |
Collapse
|
11
|
Yu J, Yan GL. [Enhancing the treatment of pregnant complications]. Zhonghua Fu Chan Ke Za Zhi 1992; 27:132-5. [PMID: 1395895] [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: 12/26/2022]
|
12
|
Zhou LF, Yan GL. [Effect of determination of lactate dehydrogenase and its isoenzymes on monitoring high-risk pregnancy]. Zhonghua Fu Chan Ke Za Zhi 1986; 21:264-7, 317. [PMID: 3816393] [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]
|
13
|
Zhang FR, Yan GL. [Monitoring intrauterine fetal growth with B-mode ultrasound scanning]. Zhonghua Fu Chan Ke Za Zhi 1985; 20:324-5, 382. [PMID: 3914402] [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: 01/08/2023]
|