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Chen L, Zhang Y, Zhang YX, Wang WL, Sun DM, Li PY, Feng XS, Tan Y. Pretreatment and analysis techniques development of TKIs in biological samples for pharmacokinetic studies and therapeutic drug monitoring. J Pharm Anal 2024; 14:100899. [PMID: 38634061 PMCID: PMC11022103 DOI: 10.1016/j.jpha.2023.11.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 10/26/2023] [Accepted: 11/15/2023] [Indexed: 04/19/2024] Open
Abstract
Tyrosine kinase inhibitors (TKIs) have emerged as the first-line small molecule drugs in many cancer therapies, exerting their effects by impeding aberrant cell growth and proliferation through the modulation of tyrosine kinase-mediated signaling pathways. However, there exists a substantial inter-individual variability in the concentrations of certain TKIs and their metabolites, which may render patients with compromised immune function susceptible to diverse infections despite receiving theoretically efficacious anticancer treatments, alongside other potential side effects or adverse reactions. Therefore, an urgent need exists for an up-to-date review concerning the biological matrices relevant to bioanalysis and the sampling methods, clinical pharmacokinetics, and therapeutic drug monitoring of different TKIs. This paper provides a comprehensive overview of the advancements in pretreatment methods, such as protein precipitation (PPT), liquid-liquid extraction (LLE), solid-phase extraction (SPE), micro-SPE (μ-SPE), magnetic SPE (MSPE), and vortex-assisted dispersive SPE (VA-DSPE) achieved since 2017. It also highlights the latest analysis techniques such as newly developed high performance liquid chromatography (HPLC) and high-resolution mass spectrometry (HRMS) methods, capillary electrophoresis (CE), gas chromatography (GC), supercritical fluid chromatography (SFC) procedures, surface plasmon resonance (SPR) assays as well as novel nanoprobes-based biosensing techniques. In addition, a comparison is made between the advantages and disadvantages of different approaches while presenting critical challenges and prospects in pharmacokinetic studies and therapeutic drug monitoring.
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Affiliation(s)
- Lan Chen
- School of Pharmacy, China Medical University, Shenyang, 110122, China
| | - Yuan Zhang
- School of Pharmacy, China Medical University, Shenyang, 110122, China
| | - Yi-Xin Zhang
- School of Pharmacy, China Medical University, Shenyang, 110122, China
| | - Wei-Lai Wang
- School of Pharmacy, China Medical University, Shenyang, 110122, China
| | - De-Mei Sun
- School of Pharmacy, China Medical University, Shenyang, 110122, China
| | - Peng-Yun Li
- Institute of Pharmacology and Toxicology Institution, National Engineering Research Center for Strategic Drugs, Beijing, 100850, China
| | - Xue-Song Feng
- School of Pharmacy, China Medical University, Shenyang, 110122, China
| | - Yue Tan
- Department of Gastroenterology, Shengjing Hospital of China Medical University, Shenyang, 110022, China
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2
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Wang WL, Zhang Y, Sun DM, Chen ZY, Qian M, Zhou Y, Feng XS, Zhang XY. Volatile Methylsiloxanes in Complex Samples: Recent Updates on Pretreatment and Analysis Methods. Crit Rev Anal Chem 2023:1-21. [PMID: 37603425 DOI: 10.1080/10408347.2023.2245050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
Volatile methylsiloxanes (VMSs) are massively produced chemicals having applications in industry and home because of their physical and chemical characteristics. They are used in personal care products such as cosmetics, household coatings, cleaners, skin care products, and others. Resultantly, large number of VMSs are discharged into air where they can be subjected to atmospheric migrations over long distances causing toxic and estrogenic effects, persistence, and bioaccumulations. Many institutions have taken measures to control VMSs. They require accurate, rapid, and sensitive pretreatment and analysis methods for diverse samples. Herein, the pretreatment and determination methods of VMSs as reported in recent years are reviewed and summarized. Pretreatments include commonly methods such as membrane-assisted solvent extraction, liquid-liquid extraction, and others, while novel methods are solid phase extraction, solid phase microextraction, diverse liquid phase microextraction and others. Analyses are made through gas chromatography-based methods. In addition, the advantages, and disadvantages of techniques are compared, and the prospects of pretreatment and analysis methods are discussed.
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Affiliation(s)
- Wei-Lai Wang
- School of Pharmacy, China Medical University, Shenyang, China
| | - Yuan Zhang
- School of Pharmacy, China Medical University, Shenyang, China
| | - De-Mei Sun
- School of Pharmacy, China Medical University, Shenyang, China
| | - Zu-Yi Chen
- School of Pharmacy, China Medical University, Shenyang, China
| | - Min Qian
- School of Pharmacy, China Medical University, Shenyang, China
| | - Yu Zhou
- Department of Pharmacy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xue-Song Feng
- School of Pharmacy, China Medical University, Shenyang, China
| | - Xin-Yuan Zhang
- School of Forensic Medicine, China Medical University, Shenyang, China
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Sun DM, Zhang Y, Zhou Y, Feng XS, Zhang XY. Progress of Pretreatment and Analytical Methods of Proton Pump Inhibitors: An Update since 2010. Crit Rev Anal Chem 2023:1-26. [PMID: 36654243 DOI: 10.1080/10408347.2023.2166782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Proton pump inhibitors (PPIs) are the most commonly used medication for stomach secretion disorders. However, when it comes to safe, discreet pharmaceutical practice, widely recognized preparational and analytical method(s) for PPIs with sensitivity, selectivity, speed and high accuracy still remains underdeveloped. For this reason, this paper sets out to make a comprehensive review of the preparation and determination methods for PPIs based on multiple matrices since 2010. We have integrated newly-developed techniques (such as solid phase extraction, liquid phase micro-extraction, and solid phase micro-extraction) into conventional sample preparational methods. On the other hand, our analytical techniques include liquid chromatography, supercritical fluid chromatography, capillary electrophoresis, and employment of sensors. In addition, we have identified the pros and cons of each technique and have forecast their future developmental trends.
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Affiliation(s)
- De-Mei Sun
- School of Pharmacy, China Medical University, Shenyang, China
| | - Yuan Zhang
- School of Pharmacy, China Medical University, Shenyang, China
| | - Yu Zhou
- Department of Pharmacy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xue-Song Feng
- School of Pharmacy, China Medical University, Shenyang, China
| | - Xin-Yuan Zhang
- School of Forensic Medicine, China Medical University, Shenyang, China
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Fu J, Sun DM, Zhang Y, Huang YF, He Q, Zhang J. [A case of restrictive cardiomyopathy associated with new TPM1 gene mutation]. Zhonghua Er Ke Za Zhi 2022; 60:1077-1078. [PMID: 36207858 DOI: 10.3760/cma.j.cn112140-20220118-00064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Affiliation(s)
- J Fu
- Department of Cardiology, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430016, China
| | - D M Sun
- Department of Cardiology, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430016, China
| | - Y Zhang
- Department of Cardiology, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430016, China
| | - Y F Huang
- Department of Cardiology, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430016, China
| | - Q He
- Department of Cardiology, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430016, China
| | - J Zhang
- Department of Cardiology, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430016, China
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Zhang YP, Pu LY, Sun DM. Crystal structure of Diaqua[5,5′-dicarboxy-2,2′-(propane-1,3-diyl)bis(1 H-imidazole-4-carboxylato-k 4
O, O′, N, N′)]iron(II), C 13H 14FeN 4O 10. Z KRIST-NEW CRYST ST 2022. [DOI: 10.1515/ncrs-2022-0298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C13H14FeN4O10, orthorhombic, Pcca (no. 54), a = 13.2154(4) Å, b = 16.9075(6) Å, c = 13.9347(5) Å, V = 3113.56(18) Å3, Z = 8, R
gt
(F) = 0.0362, wR
ref
(F
2) = 0.0971, T = 293(2) K.
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Affiliation(s)
- Ya-Ping Zhang
- Pharmacy College, Henan University of Chinese Medicine , 450046 , Zhengzhou , Henan , P. R. China
| | - Lu-Yu Pu
- Pharmacy College, Henan University of Chinese Medicine , 450046 , Zhengzhou , Henan , P. R. China
| | - De-Mei Sun
- Pharmacy College, Henan University of Chinese Medicine , 450046 , Zhengzhou , Henan , P. R. China
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Fan XT, Liu N, Long Y, Xia K, Sun DM, Zhang Y. [Successful treatment of fulminant myocarditis in a child by extracorporeal membrane oxygenation combined with percutaneous atrial septostomy: a case report]. Zhonghua Xin Xue Guan Bing Za Zhi 2022; 50:289-291. [PMID: 35340149 DOI: 10.3760/cma.j.cn112148-20210415-00344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- X T Fan
- Department of Cardiology,Wuhan Children's Hospital, Tongji Medical College,Huazhong University of Science & Technology, Wuhan 430000,China
| | - N Liu
- Department of Cardiology,Wuhan Children's Hospital, Tongji Medical College,Huazhong University of Science & Technology, Wuhan 430000,China
| | - Y Long
- Department of Cardiology,Wuhan Children's Hospital, Tongji Medical College,Huazhong University of Science & Technology, Wuhan 430000,China
| | - K Xia
- Department of Cardiology,Wuhan Children's Hospital, Tongji Medical College,Huazhong University of Science & Technology, Wuhan 430000,China
| | - D M Sun
- Department of Cardiology,Wuhan Children's Hospital, Tongji Medical College,Huazhong University of Science & Technology, Wuhan 430000,China
| | - Y Zhang
- Department of Cardiology,Wuhan Children's Hospital, Tongji Medical College,Huazhong University of Science & Technology, Wuhan 430000,China
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Dong LW, Sun XN, Ma ZC, Fu J, Liu FJ, Huang BL, Liang DC, Sun DM, Lan C. Increased Vδ1γδT cells predominantly contributed to IL-17 production in the development of adult human post-infectious irritable bowel syndrome. BMC Gastroenterol 2021; 21:271. [PMID: 34193069 PMCID: PMC8243880 DOI: 10.1186/s12876-021-01722-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 03/15/2021] [Indexed: 11/24/2022] Open
Abstract
Background γδT cells play an important role in the mucosa inflammation and immunity-associated disorders. Our previous study reported that γδ T cells producing IL-17 were involved in the pathogenesis of post-infectious irritable bowel syndrome (PI-IBS). However, their subset characteristic profile in this kind of disease remains unclear. Thus the current study’s aim is to investigate the functionally predominant subset and its role in PI-IBS. Methods The total T cells were collected from the peripheral blood of patients with PI-IBS. The peripheral proportion of Vδ1 and Vδ2 subset was detected by FACS after stained with anti δ1-PE and anti δ2-APC. The local colonic proportion of this two subsets were measured under laser confocal fluorescence microscope. Vδ1 γδ T cells were enriched from the total peripheral T cells by minoantibody-immuno-microbeads (MACS) method and cultured, functionally evaluated by CCK-8 assay (proliferation), CD69/CD62L molecules expression assay (activation) and ELISA (IL-17 production) respectively. Results 1. Vδ1 γδ T cells significantly increased while Vδ2 γδ T cells remained unchanged in both the peripheral blood and local colonic tissue from PI-IBS patients (p < 0.05). 2. When cultured in vitro, the Vδ1 γδ T cells remarkably proliferated, activated and produced IL-17 (p < 0.05). Conclusions Our results suggest that Vδ1 γδ T cells was the predominant γδ T cells subset in both peripheral and intestinal tissue, and was the major IL-17 producing γδ T cells in PI-IBS.
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Affiliation(s)
- L W Dong
- Department of Gastroenterology, Hainan General Hospital, Affiliated Hainan Hospital of Hainan Medical University, Haikou, 570311, Hainan Province, China
| | - X N Sun
- Department of Gastroenterology, Hainan General Hospital, Affiliated Hainan Hospital of Hainan Medical University, Haikou, 570311, Hainan Province, China
| | - Z C Ma
- Department of Gastroenterology, Hainan General Hospital, Affiliated Hainan Hospital of Hainan Medical University, Haikou, 570311, Hainan Province, China
| | - J Fu
- Department of Gastroenterology, Hainan General Hospital, Affiliated Hainan Hospital of Hainan Medical University, Haikou, 570311, Hainan Province, China
| | - F J Liu
- Department of Gastroenterology, Hainan General Hospital, Affiliated Hainan Hospital of Hainan Medical University, Haikou, 570311, Hainan Province, China
| | - B L Huang
- Department of Gastroenterology, Hainan General Hospital, Affiliated Hainan Hospital of Hainan Medical University, Haikou, 570311, Hainan Province, China
| | - D C Liang
- Department of Gastroenterology, Hainan General Hospital, Affiliated Hainan Hospital of Hainan Medical University, Haikou, 570311, Hainan Province, China
| | - D M Sun
- Doheny Eye Institute, Department of Ophthalmology, David Geffen School of Medicine, University of California, Los Angeles,, Los Angeles, CA, 90033, USA
| | - Cheng Lan
- Department of Gastroenterology, Hainan General Hospital, Affiliated Hainan Hospital of Hainan Medical University, Haikou, 570311, Hainan Province, China.
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Liu YT, Sun DM, Shi SP, Yang X. [Comparison of Bacteria ERIC-PCR Fingerprints of Index Fingers and Contactants]. Fa Yi Xue Za Zhi 2018; 34:33-36. [PMID: 29577702 DOI: 10.3969/j.issn.1004-5619.2018.01.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Indexed: 11/18/2022]
Abstract
OBJECTIVES To explore the bacteria relevance between index fingers and contactant' surfaces (mobile phone touch screen and desktop of personal office table). METHODS Bacteria were collected from the index fingers, mobile phone touch screen and desktop of personal office table of 10 volunteers. Enterobacterial repetitive intergenic consensus (ERIC)-PCR fingerprint was established by PCR amplification technique of metagenome. RESULTS There were 7 volunteers' ERIC-PCR fingerprints of index fingers matched that took from the mobile phone touch screens, and different from each other. There were 3 volunteers' ERIC-PCR fingerprints of index fingers matched that took from desk top of personal office table, and other 7 volunteers' ERIC-PCR fingerprints did not match perfectly with that took from desk top of personal office table, but had at least one similar band for both. CONCLUSIONS The bacteria on index finger shows individual specificity, which on mobile phone touching screen and personal desktop may be a new biological sample of forensic identification.
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Affiliation(s)
- Y T Liu
- East China University of Political Science and Law, Shanghai 200043, China.,Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
| | - D M Sun
- East China University of Political Science and Law, Shanghai 200043, China
| | - S P Shi
- Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
| | - X Yang
- Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
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9
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Zhou QS, Hu Z, Liu CJ, Li XH, Sun DM, Li P. [The aging changes of the nasal septum in adolescents]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:1027-1028. [PMID: 29798170 DOI: 10.13201/j.issn.1001-1781.2017.13.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Indexed: 06/08/2023]
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10
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Zhong P, Sun DM, Wu DH, Li TM, Liu XY, Liu HY. Serum total bilirubin levels are negatively correlated with metabolic syndrome in aged Chinese women: a community-based study. ACTA ACUST UNITED AC 2017; 50:e5252. [PMID: 28146216 PMCID: PMC5304216 DOI: 10.1590/1414-431x20165252] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 09/29/2016] [Indexed: 12/31/2022]
Abstract
We evaluated serum total bilirubin levels as a predictor for metabolic syndrome (MetS) and investigated the relationship between serum total bilirubin levels and MetS prevalence. This cross-sectional study included 1728 participants over 65 years of age from Eastern China. Anthropometric data, lifestyle information, and previous medical history were collected. We then measured serum levels of fasting blood-glucose, total cholesterol, triglycerides, and total bilirubin, as well as alanine aminotransferase activity. The prevalence of MetS and each of its individual component were calculated per quartile of total bilirubin level. Logistic regression was used to assess the correlation between serum total bilirubin levels and MetS. Total bilirubin level in the women who did not have MetS was significantly higher than in those who had MetS (P<0.001). Serum total bilirubin quartiles were linearly and negatively correlated with MetS prevalence and hypertriglyceridemia (HTG) in females (P<0.005). Logistic regression showed that serum total bilirubin was an independent predictor of MetS for females (OR: 0.910, 95%CI: 0.863-0.960; P=0.001). The present study suggests that physiological levels of serum total bilirubin might be an independent risk factor for aged Chinese women, and the prevalence of MetS and HTG are negatively correlated to serum total bilirubin levels.
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Affiliation(s)
- P Zhong
- Department of Neurology, Shanghai TCM Integrated Hospital, Shanghai University of Chinese Medicine, Shanghai, China
| | - D M Sun
- Puxing Community Health Service Centers, Pudong New Area, Shanghai, China
| | - D H Wu
- Department of Neurology, the Third People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Neurology, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - T M Li
- Department of Neurology, Shanghai TCM Integrated Hospital, Shanghai University of Chinese Medicine, Shanghai, China
| | - X Y Liu
- Department of Neurology, Shanghai TCM Integrated Hospital, Shanghai University of Chinese Medicine, Shanghai, China
| | - H Y Liu
- Pingliang Community Health Service Centers, Yangpu Area, Shanghai, China
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11
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Tao MF, Sun DM, Shao HF, Li CB, Teng YC. Poor sleep in middle-aged women is not associated with menopause per se. ACTA ACUST UNITED AC 2016; 49:e4718. [PMID: 26577848 PMCID: PMC4678654 DOI: 10.1590/1414-431x20154718] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Accepted: 08/06/2015] [Indexed: 11/22/2022]
Abstract
Whether sleep problems of menopausal women are associated with vasomotor symptoms and/or changes in estrogen levels associated with menopause or age-related changes in sleep architecture is unclear. This study aimed to determine if poor sleep in middle-aged women is correlated with menopause. This study recruited women seeking care for the first time at the menopause outpatient department of our hospital. Inclusion criteria were an age ≥40 years, not taking any medications for menopausal symptoms, and no sleeping problems or depression. Patients were assessed with the Pittsburgh Sleep Quality Index (PSQI), modified Kupperman Index (KI), and Menopause Rating Scale (MRS). A PSQI score of <7 indicated no sleep disorder and ≥7 indicated a sleep disorder. Blood specimens were analyzed for follicle-stimulating hormone and estradiol levels. A total of 244 women were included in the study; 103 (42.2%) were identified as having a sleep disorder and 141 as not having one. In addition, 156 (64%) women were postmenopausal and 88 (36%) were not menopausal. Follicle-stimulating hormone and estradiol levels were similar between the groups. Patients with a sleep disorder had a significantly higher total modified KI score and total MRS score (both, P<0.001) compared with those without a sleep disorder. Correlations of the PSQI total score with the KI and MRS were similar in menopausal and non-menopausal women. These results do not support that menopause per se specifically contributes to sleep problems.
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Affiliation(s)
- M F Tao
- Department of Obstetrics and Gynecology, Shanghai Jiao Tong University Affiliated to the Sixth People's Hospital, Shanghai, China
| | - D M Sun
- Department of Obstetrics and Gynecology, Shanghai Jiao Tong University Affiliated to the Sixth People's Hospital, Shanghai, China
| | - H F Shao
- Department of Obstetrics and Gynecology, Shanghai Jiao Tong University Affiliated to the Sixth People's Hospital, Shanghai, China
| | - C B Li
- Department of Obstetrics and Gynecology, Shanghai Jiao Tong University Affiliated to the Sixth People's Hospital, Shanghai, China
| | - Y C Teng
- Department of Obstetrics and Gynecology, Shanghai Jiao Tong University Affiliated to the Sixth People's Hospital, Shanghai, China
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12
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Hu Z, Zhou QS, Cao LH, Gu JC, Sun DM, Liu CJ, Li P, Li XH. [The imaging analysis of the age-related changes on maxillary sinus]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:1311-1314. [PMID: 29797977 DOI: 10.13201/j.issn.1001-1781.2016.16.012] [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: 03/06/2016] [Indexed: 11/12/2022]
Abstract
Objective:The aim of this study is to investigate the age-related changes rules of maxillary sinus.Method:The 540 patients (1 080 sides) with normal data of deputy sinus in spiral CT were enrolled,including 270 cases of male and female,age from 7 to 81 years old.They are divided into 9 groups according to the age:Group A at the age of 7-12 years old,Group B at the age of 13-17,Group C at the age of 18-20 years old,Group D at the age of 21-24 years old,Group E at the age of 25-28 years,Group F at the age of 29-35 years old,Group G at the age of 36-40 years old,Group H at the age of 41-65 years old,and Group I is more than 65 years old.By the gender,the patients in each group was divided into male and female groups.There are 30 cases in each group(60 sides).The volumes and the three-dimensional diameters of the maxillary sinus were measured,and the coefficient of gasification of them were calculated.Result:The maxillary sinus volume and 3 D lines have almost the same change trend along with the age between the male and female group;From 7 to 20 ages,they are increased linearly,13 to 17 fastest-growing;18 to 20 years old reached to peak;declined slightly in 21-28 years old,29-35 a second growth peak,and 36 to 40 years old have fallen sharply,to reaching a steady state after 41 years old;The gasification coefficient has no difference among all groups.Conclusion:The volume changes with the age-related on maxillary sinus is in the adolescent stage.It reaches a steady state in the middle and old age stage,and gasification coefficient on maxillary sinus has no age-related changes among all groups.
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Affiliation(s)
- Z Hu
- Department of Radiology,Central Hospital of Chaoyang City,Liaoning Province,Chaoyang,122000,China
| | - Q S Zhou
- Department of Radiology,Central Hospital of Chaoyang City,Liaoning Province,Chaoyang,122000,China
| | - L H Cao
- Department of Otorhinolaryngology,the Third Affiliated Hospital of Wenzhou Medical University
| | - J C Gu
- Department of Otolaryngology Head and Neck Surgery,the First Affiliated Hospital,Liaoning Medical University
| | - D M Sun
- Department of Radiology,Central Hospital of Chaoyang City,Liaoning Province,Chaoyang,122000,China
| | - C J Liu
- Department of Radiology,Central Hospital of Chaoyang City,Liaoning Province,Chaoyang,122000,China
| | - P Li
- Department of Radiology,Central Hospital of Chaoyang City,Liaoning Province,Chaoyang,122000,China
| | - X H Li
- Department of Radiology,Central Hospital of Chaoyang City,Liaoning Province,Chaoyang,122000,China
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Zheng Y, Chen M, He L, Marão HF, Sun DM, Zhou J, Kim SG, Song S, Wang SL, Mao JJ. Mesenchymal dental pulp cells attenuate dentin resorption in homeostasis. J Dent Res 2015; 94:821-7. [PMID: 25762594 DOI: 10.1177/0022034515575347] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Dentin in permanent teeth rarely undergoes resorption in development, homeostasis, or aging, in contrast to bone that undergoes periodic resorption/remodeling. The authors hypothesized that cells in the mesenchymal compartment of dental pulp attenuate osteoclastogenesis. Mononucleated and adherent cells from donor-matched rat dental pulp (dental pulp cells [DPCs]) and alveolar bone (alveolar bone cells [ABCs]) were isolated and separately cocultured with primary rat splenocytes. Primary splenocytes readily aggregated and formed osteoclast-like cells in chemically defined osteoclastogenesis medium with 20 ng/mL of macrophage colony-stimulating factor (M-CSF) and 50 ng/mL of receptor activator of nuclear factor κB ligand (RANKL). Strikingly, DPCs attenuated osteoclastogenesis when cocultured with primary splenocytes, whereas ABCs slightly but significantly promoted osteoclastogenesis. DPCs yielded ~20-fold lower RANKL expression but >2-fold higher osteoprotegerin (OPG) expression than donor-matched ABCs, yielding a RANKL/OPG ratio of 41:1 (ABCs:DPCs). Vitamin D3 significantly promoted RANKL expression in ABCs and OPG in DPCs. In vivo, rat maxillary incisors were atraumatically extracted (without any tooth fractures), followed by retrograde pulpectomy to remove DPCs and immediate replantation into the extraction sockets to allow repopulation of the surgically treated root canal with periodontal and alveolar bone-derived cells. After 8 wk, multiple dentin/root resorption lacunae were present in root dentin with robust RANKL and OPG expression. There were areas of dentin resoprtion alternating with areas of osteodentin formation in root dentin surface in the observed 8 wk. These findings suggest that DPCs of the mesenchymal compartment have an innate ability to attenuate osteoclastogenesis and that this innate ability may be responsible for the absence of dentin resorption in homeostasis. Mesenchymal attenuation of dentin resorption may have implications in internal resorption in the root canal, pulp/dentin regeneration, and root resorption in orthodontic tooth movement.
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Affiliation(s)
- Y Zheng
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA Department of Endodontics, Capital Medical University School of Stomatology, Beijing, China
| | - M Chen
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - L He
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - H F Marão
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - D M Sun
- Department of Neuroscience, Rutgers University, Piscataway, NJ, USA
| | - J Zhou
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - S G Kim
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - S Song
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - S L Wang
- Department of Endodontics, Capital Medical University School of Stomatology, Beijing, China
| | - J J Mao
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
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14
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Xiao CH, Tang H, Pu LJ, Sun DM, Ma JZ, Yu M, Duan RS. Diversity of nitrogenase (nifH) genes pool in soybean field soil after continuous and rotational cropping. J Basic Microbiol 2010; 50:373-9. [PMID: 20473958 DOI: 10.1002/jobm.200900317] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Diazotrophs diversity in soybean is a topic requiring thorough investigation since the previous researches have focused on only rice, forest, grass, water, etc. In this research, iron-only nitrogenase nifH gene was as genetic marker. PCR-RFLP was used to investigate the difference of diazotrophs community diversity in the soil from the continuous cropping (CC) (the 5-yr tilling of soybean) and the rotational cropping (RC) (soybean-corn) soils in the northeast of China. A total of 36 isolates were genetically characterized. Most of the isolates closely related to Azospirillum and Azotobacter. Eighty-six unique nifH gene sequences were obtained by cloning of the respective PCR products in two soil samples. It was found that the diversity of nifH genes in CC changed obviously compared with RC. Phylogenetic analysis indicated that most of the clones clustered together in a high homogeneity with some sequence retrieved from environmental representatives. The sequence diversity of nifH genes was high and the members of the Alphaproteobacteria were predominant in both samples. The experimental study also revealed the two non-proteobacterial diazotrophs, firmicutes and euryarchaeota. Through this study, it can be assumed that different tillage perhaps affected the nifH gene-containing population diversity.
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Affiliation(s)
- C H Xiao
- Subject of Physiology and Ecology, College of Life Science, Heilongjiang August First Land Reclamation University, Daqing, China
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15
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Gu HY, Sun DM, Yu AM, Chen HY. [Polarographic behavior of latamoxef sodium and its trace determination]. Yao Xue Xue Bao 1997; 32:373-6. [PMID: 11498875] [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: 04/16/2023]
Abstract
In the medium of HCl-KCl (pH 1-2) by means of cyclic voltammetry and differential pulse polarography (DPP), the mechanism of the electrode reaction for latamoxef sodium (Shiomarin) at static mercury drop electrode (SMDE) and hanging mercury drop electrode (HMDE) has been proposed. A sensitive method for the determination of nanomolar concentration of latamoxef sodium by DPP was developed. The peak potential was -0.62 V (vs Ag/AgCl). The linear range was from 1 x 10(-8) to 8 x 10(-4) mol.L-1, the detection limit was ca. 4 x 10(-9) mol.L-1(tac = 90 s). The method was applied to the determination of latamoxef sodium in injection with satisfactory results. The possibility for the direct determination of latamoxef sodium in mimic urine sample was also studied.
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Affiliation(s)
- H Y Gu
- Department of Chemistry, Nanjing University, Nanjing 210093
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16
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Abstract
Adult female guinea pigs were fed semipurified diets containing increasing concentrations of saturated fat (2.5%, 7.5%, 15%, and 25% wt/wt) to determine effects of exchanging fat-carbohydrate calories on lipoprotein metabolism. Plasma very-low-density lipoprotein (VLDL) and high-density lipoprotein (HDL) did not vary but plasma low-density lipoprotein (LDL) concentrations increased with increasing fat calories. LDL cholesterol values were 42 +/- 25, 61 +/- 17, 92 +/- 25, and 98 +/- 21 mg/dL (mean +/- SD, n = 5), respectively. The relative proportion of cholesteryl ester increased and triacylglycerol (TAG) decreased for VLDL, LDL, and HDL as dietary fat increased. Plasma lecithin cholesterol acyltransferase (LCAT) activity was positively correlated with HDL cholesteryl ester content. Hepatic cholesterol and TAG concentrations were highest in animals fed 25% fat (P < .01). Hepatic apolipoprotein (apo) B/E receptor maximal binding capacity (Bmax) was 30% higher in animals fed 2.5% and 7.5% fat as compared with those fed 15% and 25% fat (P < .01) and inversely correlated with plasma LDL (r = -.85, P < .01). In contrast, HDL binding to guinea pig hepatic membranes exhibited a significant positive correlation with dietary fat quantity (r = .98, P < .001), consistent with a dose-response with increasing fat calories. The activity of hepatic 3-hydroxy-3-methyl glutaryl coenzyme A (HMG CoA) reductase was not affected by the amount of dietary fat, whereas the activity of acyl CoA:cholesterol acyltransferase (ACAT) was significantly increased in animals fed 25% fat (P < .05). Hepatic free-cholesterol and ACAT activity exhibited a positive correlation for all dietary groups (r = .75, P < .001). These results demonstrate that exchange of saturated dietary fat for carbohydrate calories results in significant modifications in the regulation of metabolic pathways that determine plasma LDL concentrations and hepatic cholesterol homeostasis.
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Affiliation(s)
- M L Fernandez
- Department of Nutritional Sciences, University of Arizona, Tucson 85721, USA
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17
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Fernandez ML, Ruiz LR, Conde AK, Sun DM, Erickson SK, McNamara DJ. Psyllium reduces plasma LDL in guinea pigs by altering hepatic cholesterol homeostasis. J Lipid Res 1995; 36:1128-38. [PMID: 7658161] [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: 01/26/2023] Open
Abstract
Male Hartley guinea pigs were fed semipurified diets containing various levels of psyllium and cholesterol to determine mechanisms by which psyllium lowers plasma low density lipoprotein (LDL) concentrations. Four diets were tested: control diets with 12.5% (w/w) cellulose, and psyllium diets in which cellulose was partially replaced with 7.5% (w/w) psyllium. Two levels of dietary cholesterol were used, either low (LC, 0.04%, w/w) or high (HC, 0.25%, w/w). Plasma LDL was reduced by 30 and 54% with psyllium intake in the LC and HC groups, respectively (P < 0.001), while plasma very low density lipoprotein (VLDL) was lowered only in the HC group (P < 0.001). Psyllium intake modified LDL composition and size compared to LDL from control animals with a lower proportion of cholesteryl ester and higher proportion of triacylglycerol, lower molecular weight, smaller diameter, and higher peak density (P < 0.001). Plasma VLDL from animals fed the psyllium-HC diet compared to the control-HC contained lower relative proportions of free and esterified cholesterol and a higher proportion of triacylglycerol, compositional characteristics similar to VLDL from animals fed LC diets. Hepatic free and esterified cholesterol concentrations were significantly reduced by psyllium an average of 25 and 55%, respectively, while hepatic HMG-CoA reductase activity was increased in both psyllium groups compared to the respective controls (P < 0.001). In addition, psyllium intake reduced hepatic acyl-CoA:cholesterol acyltransferase (ACAT) activity in both the LC and HC groups (P < 0.001) and increased hepatic membrane apoB/E receptor number (Bmax) by 17 and 52% for animals fed LC and HC diets, respectively (P < 0.005). Significant psyllium-induced increases in cholesterol 7 alpha-hydroxylase of 4- and 1.6-fold were also observed in animals fed the LC and HC diets respectively (P < 0.001). These results indicate that psyllium generates a negative cholesterol balance across the liver which results in induction of cholesterol 7 alpha-hydroxylase and HMG-CoA reductase and suppression of ACAT activities, upregulation of apoB/E receptors, and secretion of smaller VLDL particles, metabolic alterations that contribute to a lowering of plasma LDL cholesterol levels.
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Affiliation(s)
- M L Fernandez
- Department of Nutritional Sciences, University of Arizona, Tucson 85721, USA
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Fernandez ML, Sun DM, Tosca M, McNamara DJ. Guar gum effects on plasma low-density lipoprotein and hepatic cholesterol metabolism in guinea pigs fed low- and high-cholesterol diets: a dose-response study. Am J Clin Nutr 1995; 61:127-34. [PMID: 7825524 DOI: 10.1093/ajcn/61.1.127] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [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: 01/27/2023] Open
Abstract
Guinea pigs were fed semipurified diets containing either 0% or 12.5% guar gum (GG) with 0.04% cholesterol or increasing concentrations of GG (0%, 2.5%, 5%, 7.5%, 10%, and 12.5%) with 0.25% cholesterol (by wt). Compared to the 0% GG diet with 0.04% cholesterol, intake of the 12.5% GG diet with 0.04% cholesterol lowered plasma low-density-lipoprotein (LDL) concentrations, the ratio of LDL cholesteryl ester to protein, hepatic cholesterol concentrations, and the activity of acyl-CoA:cholesterol acyltransferase (ACAT), and increased 3-hydroxy-3-methylglutaryl coenzyme A (HMG CoA) reductase activity and hepatic apo B/E receptor number (P < 0.01). Intake of GG by animals fed 0.25% cholesterol diets resulted in modest effects on hepatic cholesterol pools and plasma LDL concentrations; however, significant negative correlations were found between both plasma LDL cholesterol and hepatic free cholesterol concentrations with the amount of dietary GG (P < 0.05). Hepatic HMG-CoA reductase was suppressed by the 0.25% cholesterol intake, and GG did not reverse this suppression. In contrast, ACAT activity was negatively correlated with the amount of dietary GG (P < 0.05), and GG intake increased the number of hepatic apo B/E receptors at all intakes with the 0.25% cholesterol diets. These results demonstrate that intake of GG significantly alters endogenous cholesterol metabolism by decreasing hepatic cholesterol pools, altering hepatic cholesterol homeostasis, and reducing plasma LDL concentrations.
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Affiliation(s)
- M L Fernandez
- Department of Nutritional Sciences, University of Arizona, Tucson 85721
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Fernandez ML, Sun DM, Tosca MA, McNamara DJ. Citrus pectin and cholesterol interact to regulate hepatic cholesterol homeostasis and lipoprotein metabolism: a dose-response study in guinea pigs. Am J Clin Nutr 1994; 59:869-78. [PMID: 8147332 DOI: 10.1093/ajcn/59.4.869] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Guinea pigs were fed increasing concentrations of citrus pectin (CP) (0-12.5%, wt/wt) with low (LC, 0.04%) or high (HC, 0.25%) cholesterol. Animals fed LC diets had reduced plasma LDL concentrations with 10% and 12.5% CP and hepatic membrane apolipoprotein B/E receptor expression increased with high dosages of CP. Hepatic 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase activity increased with 12.5% CP whereas hepatic cholesterol concentrations and acyl-CoA:cholesterol acyltransferase (ACAT) activity were not different. In contrast, with HC diets, plasma LDL concentrations were reduced in a dose-response manner by 29%, 30%, and 67% with 7.5%, 10%, and 12.5% CP intake (P < 0.001) and apolipoprotein B/E receptor number was increased and inversely correlated with plasma LDL in the HC group (r = -0.81, P < 0.005). Animals fed HC diets had a dose-dependent decrease in hepatic cholesterol and ACAT activity, with intake of 12.5% CP having the major effect. Hepatic HMG-CoA reductase activity was suppressed by HC diets and only intake of 12.5% CP reversed this suppression. The most significant effects of CP on hepatic cholesterol, enzymes of hepatic cholesterol homeostasis, and the apolipoprotein B/E receptor were in animals fed the HC diets. These metabolic alterations partially explain the reduced plasma LDL of guinea pigs fed large amounts of CP.
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Affiliation(s)
- M L Fernandez
- Department of Nutritional Sciences, University of Arizona, Tucson 85721
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Qin YF, Sun DM, Goto M, Meyermann R, Wekerle H. Resistance to experimental autoimmune encephalomyelitis induced by neonatal tolerization to myelin basic protein: clonal elimination vs. regulation of autoaggressive lymphocytes. Eur J Immunol 1989; 19:373-80. [PMID: 2467819 DOI: 10.1002/eji.1830190223] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The target autoantigen of experimental autoimmune encephalomyelitis (EAE), myelin basic protein (MBP), appears late in ontogeny. In the rat MBP is expressed first on days 2-3 post partum, at a development stage, when self tolerance to most other autoantigens has already developed. To shed light on the cellular mechanisms that lead to immunological self tolerance to MBP, we treated neonatal rats with high doses of MBP before ontogenetic appearance of this autoantigen. We found that high doses are required to confer MBP-specific tolerance lasting until the adult life. Neonatally tolerized, adult rats are completely resistant to induction of EAE by injection of MBP in complete Freund's adjuvant (CFA). Upon MBP CFA challenge, these animals develop a limited humoral response to MBP, but are completely unreactive to MBP on the T cell level. The function of antigen-presenting cells is unchanged by neonatal tolerization, and there is no evidence for the induction of suppressive mechanisms. Transfers of large numbers of tolerized lymphocytes to normal hosts fails to interfere with EAE inducibility. Moreover, neonatally tolerized lymphocytes do not reduce MBP reactivity of primed lymph node cells or T line cells in vitro. Finally, neonatally tolerized rats are susceptible to EAE transferred by activated primed lymphocytes or by in vitro-activated MBP-specific T line cells. The apparent deletion of MBP-specific T lymphocytes in neonatally tolerized rats is in striking contrast to the physiological self tolerance to MBP, which is characterized by the presence of MBP-specific clones in the normal immune repertoire.
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Affiliation(s)
- Y F Qin
- Max-Planck-Gesellschaft, Klinische Forschungsgruppe für Multiple Sklerose, Würzburg, FRG
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Zang YH, Zhang SR, Chen LP, Dong ZY, Xia HZ, Sun DM, Yin L. Immuno-deficiency acquired during carcinogenesis: a mechanism facilitating cancer development. Chin Med J (Engl) 1987; 100:465-71. [PMID: 3115725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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Sun DM, Hu XZ, Shi W, Zhang YH. [Influences of inflammatory macrophages on the proliferation of mouse tumor cells in vitro]. Zhonghua Zhong Liu Za Zhi 1986; 8:247-9. [PMID: 3093180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Augmented growth of tumor cells of both syngeneic and allogeneic origin was often observed when these cells were cocultured with the peritoneal inflammatory macrophages of C57BL/6 mouse, induced by thioglycollate in vitro. While large doses of macrophage-activating factor (MAF) were required for activating these inflammatory macrophages to exert the tumoricidal activity, and much less (suboptimal) doses of MAF were required for activating their cytostatic effect on tumor cells. Whether the macrophage inhibits or enhances the tumor cell proliferation, depends not only on the degree of the activation of macrophage, but also on the macrophage/tumor cell ratio.
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Sun DM, Shi W, Hu XZ, Lu S, Zhang YH. [Studies on mouse macrophage activation. II. Dissociation of the suppressive effects of macrophages on lymphocytes vs tumor cells]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 1985; 7:176-80. [PMID: 2939970] [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: 01/03/2023]
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24
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Sun DM. [Recent research in natural killer cells]. Zhonghua Zhong Liu Za Zhi 1984; 6:78-9. [PMID: 6745060] [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: 01/21/2023]
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