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Yi Z, Li XY, Zhang LP, Yang CQ, Li F, Song ZF, Xue J, Zhang Y, Wang CD. [A case of epilepsy and intracranial calcification caused by a variant of CLDN5 gene]. Zhonghua Er Ke Za Zhi 2024; 62:183-185. [PMID: 38264822 DOI: 10.3760/cma.j.cn112140-20230904-00155] [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: 01/25/2024]
Affiliation(s)
- Z Yi
- Department of Pediatric Neurology, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - X Y Li
- Department of Neurology and Neurobiology, Xuanwu Hospital of Capital Medical University, National Clinical Research Center for Geriatric Diseases (Xuanwu Hospital), Beijing 100053, China
| | - L P Zhang
- Department of Pediatrics, Xuanwu Hospital of Capital Medical University, Beijing 100053, China
| | - C Q Yang
- Department of Pediatric Neurology, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - F Li
- Department of Pediatric Neurology, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Z F Song
- Department of Pediatric Neurology, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - J Xue
- Department of Pediatric Neurology, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Y Zhang
- Department of Pediatric Neurology, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - C D Wang
- Department of Neurology and Neurobiology, Xuanwu Hospital of Capital Medical University, National Clinical Research Center for Geriatric Diseases (Xuanwu Hospital), Beijing 100053, China
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Tang X, Wen D, Wang CD, Xu RY, Jia HT, Li JN, Zhalaga BYL. Application of Microhaplotypes in Sibling Kinship Testing. Fa Yi Xue Za Zhi 2023; 39:288-295. [PMID: 37517018 DOI: 10.12116/j.issn.1004-5619.2023.530101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
OBJECTIVES To investigate the efficacy of different numbers of microhaplotype (MH) loci and the introduction of different reference samples on the identification of full sibling, half sibling and differentiation between full sibling and half sibling kinships, and to explore the effect of changing mutation rate on sibling testing. METHODS First, a family map involving three generations was established, and four full sibling identification models, five half sibling identification models and five models distinguishing full and half siblings were constructed for different reference samples introduced. Based on the results of the previous study, two sets of nonbinary SNP-MH containing 34 and 54 loci were selected. Based on the above MH loci, 100 000 pairs of full sibling vs. unrelated individuals, 100 000 pairs of half sibling vs. unrelated individuals and 100 000 pairs of full sibling vs. half sibling were simulated based on the corresponding sibling kinship testing models, and the efficacy of each sibling kinship testing model was analyzed by the likelihood ratio algorithm under different thresholds. The mutant rate of 54 MH loci was changed to analyze the effect of mutation rate on sibling identification. RESULTS In the same relationship testing model, the systematic efficacy of sibling testing was positively correlated with the number of MH loci detected. With the same number of MH loci, the efficacy of full sibling testing was better than that of uncle or grandfather when the reference sample introduced was a full sibling of A, but there was no significant difference in the identification efficacy of the four reference samples introduced for full sibling and half sibling differentiation testing. In addition, the mutation rate had a slight effect on the efficacy of sibling kinship testing. CONCLUSIONS Increasing the number of MH loci and introducing reference samples of known relatives can increase the efficacy of full sibling testing, half sibling testing, and differentiation between full and half sibling kinships. The level of mutation rate in sibling testing by likelihood ratio method has a slight but insignificant effect on the efficacy.
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Affiliation(s)
- Xuan Tang
- Department of Forensic Medicine, College of Basic Medicine, Central South University, Changsha 410013, China
| | - Dan Wen
- Department of Forensic Medicine, College of Basic Medicine, Central South University, Changsha 410013, China
| | - Chu-Dong Wang
- Department of Forensic Medicine, College of Basic Medicine, Central South University, Changsha 410013, China
| | - Ru-Yi Xu
- Department of Forensic Medicine, College of Basic Medicine, Central South University, Changsha 410013, China
| | - Hong-Tao Jia
- Department of Forensic Medicine, College of Basic Medicine, Central South University, Changsha 410013, China
| | - Jie-Nan Li
- Department of Forensic Medicine, College of Basic Medicine, Central South University, Changsha 410013, China
| | - Bai-Yi-la Zhalaga
- Department of Forensic Medicine, College of Basic Medicine, Central South University, Changsha 410013, China
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Gao DF, Liang Y, Lin GZ, Zhang YM, Yang G, Zhan M, Liu SK, Wang CD, Liu J, Zhu Z, Zhou Z. [Efficacy analysis of high-sensitivity troponin I concentration and its changes in the diagnosis of acute myocardial infarction]. Zhonghua Yi Xue Za Zhi 2022; 102:3463-3468. [PMID: 36396363 DOI: 10.3760/cma.j.cn112137-20220526-01163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: To explore the feasibility and accuracy of 0-1 h high sensitivity cardiac troponin I (hs-cTnI) concentration and its changes in judging non-ST segment elevation myocardial infarction (NSTEMI), and to investigate the feasibility of a simplified process. Methods: Patients with acute chest pain and suspected NSTEMI who were admitted to the emergency department of Fuwai Hospital, the First Affiliated Hospital of Sun Yat-sen University and Nanjing First Hospital from January 2017 to September 2020 were selected. Hs-cTnI test was carried out for the selected patients at the time of visit (0 h) and 1 h after visit. According to the 0-1 h hs-cTnI diagnostic process and threshold standard recommended by European Society of Cardiology (ESC) guidelines in 2015, the laboratory adjudication was determined. Cardiologists who did not participate in the project design and did not know the results of hs-cTnI test performed the clinical judgment according to the routine diagnosis and treatment process of emergency department. Taking clinical judgment as the gold standard, the diagnostic efficacy of 0-1 h hs-cTnI concentration and its change recommended by the guidelines for judging NSTEMI in Chinese population was analyzed. The guide process was simplified. Under the condition of not considering the time of chest pain, the guideline threshold was used for test and judgement, and the diagnostic efficacy of the simplified process was evaluated. Results: A total of 1 534 patients were enrolled in the study, aged (62±12) years and 952 (62.1%) patients were male. Among them, 402 patients (26.2%) were clinically diagnosed as NSTEMI and 1 132 patients (73.8%) were diagnosed as non-NSTEMI. According to the diagnosis and determination process recommended by the guidelines, NSTEMI was excluded in 672 patients (42.8%), and 464 patients (30.2%) were diagnosed as NSTEMI. The consistency rate with clinical determination reached 92.4% (1 050/1 136), the sensitivity of excluding diagnosis was 99.5% (95%CI: 98.0%-99.9%), the negative predictive value was 99.7% (95%CI: 98.8%-99.9%), and the negative likelihood ratio was 0.008 (95%CI: 0.002-0.335). The diagnostic specificity was 92.6% (95%CI: 90.9%-94.0%), the positive predictive value was 81.9% (95%CI: 78.0%-85.2%), and the positive likelihood ratio was 12.739 (95%CI: 10.356-15.670). According to the simplified process, NSTEMI was excluded in 675 patients (44.0%), and 463 patients (30.2%) were diagnosed as NSTEMI. The consistency rate with clinical judgment was 92.4% (1 051/1 138), the sensitivity of exclusion diagnosis was 99.3% (95%CI: 97.6%-99.8%), the negative predictive value was 99.6% (95%CI: 98.6%-99.9%), and the negative likelihood ratio was 0.012 (95%CI: 0.004-0.389). The diagnostic specificity was 92.6% (95%CI: 90.9%-94.0%), the positive predictive value was 81.9% (95%CI: 78.0%-85.2%), and the positive likelihood ratio was 12.705 (95%CI: 10.328-15.630). There was no significant difference in diagnostic efficacy between the simplified process and the recommended process (all P>0.05). Conclusion: The diagnostic process for judging NSTEMI according to the 0-1 h hs-cTnI concentration and its change criteria recommended by the 2015 ESC guidelines is applicable in the Chinese population and remains highly accurate in judging NSTEMI without considering the duration of chest pain at the time of presentation.
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Affiliation(s)
- D F Gao
- Center of Emergency and Critical Care, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Y Liang
- Center of Emergency and Critical Care, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - G Z Lin
- Center of Laboratory Medicine, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Y M Zhang
- Center of Emergency and Critical Care, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - G Yang
- Center of Emergency and Critical Care, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - M Zhan
- Department of Emergency, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - S K Liu
- Department of Emergency, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - C D Wang
- Department of Laboratory Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - J Liu
- Department of Laboratory Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Z Zhu
- Center of Emergency and Critical Care, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Zhou Zhou
- Center of Laboratory Medicine, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
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Wang CD, Wang A, Sun JL, Ma WG, Wang JG. [Clinical effects of free peroneal artery perforator flaps in repairing forefoot skin and soft tissue defect wounds assisted with three-dimensional computed tomography angiography]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2022; 38:661-666. [PMID: 35899333 DOI: 10.3760/cma.j.cn501120-20210914-00317] [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] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To investigate the clinical effects of free peroneal artery perforator flaps in repairing forefoot skin and soft tissue defect wounds assisted with three-dimensional computed tomography angiography (3D-CTA). Methods: A retrospective observational study was conducted. From March 2017 to September 2019, 15 patients with skin and soft tissue defect wounds in the forefoot were treated in the Department of Burn and Plastic Surgery of Yidu Central Hospital of Weifang, including 12 males and 3 females, with age of 18-60 years. The wound area on admission was 3.0 cm×3.0 cm-9.0 cm×8.0 cm. The 3D-CTA examination before operation was performed to select the peroneal artery perforating vessels with appropriate length of vascular pedicle and good blood perfusion. According to the wound area and the perforating vessels of the peroneal artery located by 3D-CTA, the peroneal artery perforator flaps of 3.5 cm×3.5 cm-9.5 cm×8.5 cm carried with lateral sural cutaneous nerve was designed and cut, and the nerve was anastomosed with the nerve of the wound. The wound in the donor site of the flap was directly sutured or covered with medium-thickness skin graft from the thigh. The consistencies of type, diameter, and perforating position of perforating vessel of the peroneal artery detected by 3D-CTA before the operation with those of the actual measurement during operation were observed. The length of time for flap cutting and the survival of the flap after operation were recorded. During follow-up of 12 months after the operation, the patients were instructed to evaluate the foot function according to the Maryland foot function score standard, and the wound healing in the donor area and the occurrence of complications affecting the motor function of limb were observed. Data were statistically analyzed with paired sample t test. Results: The types of peroneal artery perforating vessels in patients measured during the operation were septocutaneous perforator of 12 cases, musculocutaneous perforator of 2 cases, and musculomuscular septal perforator of 1 case, which were consistent with those measured by preoperative 3D-CTA. The diameter of the peroneal artery perforating vessel measured by preoperative 3D-CTA was (1.38±0.17) mm, which was close to (1.40±0.19) mm measured during the operation (t=0.30, P>0.05). The horizontal distance from the starting point of the perforating vessel to the outer edge of the shank was (42±6) mm, and the vertical distance from the starting point of the perforating vessel to the level of the lateral ankle tip was (219±14) mm measured by preoperative 3D-CTA, which were respectively close to (43±6) and (221±15) mm of intraoperative measurement (with t values of 0.46 and 0.38, respectively, P>0.05). The length of time for cutting flap was (31±6) min. All flaps survived post operation without vascular crisis. During follow-up of 12 months after the operation, the foot function was evaluated as excellent in 11 cases, good in 3 cases, and fair in 1 case, the donor site wound healed well, the scar was not noticeable with no contracture, and the motor function of joints was not affected. Conclusions: Free peroneal artery perforator flap is one of the effective methods to reconstruct skin and soft tissue defect wounds in the forefoot, and the risk of surgery can be reduced when the anatomical location of the perforating vessels is confirmed by 3D-CTA.
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Affiliation(s)
- C D Wang
- Interventional Therapy Department, Yidu Central Hospital of Weifang, Weifang 262550, China
| | - A Wang
- Department of Burn and Plastic Surgery, Yidu Central Hospital of Weifang, Weifang 262550, China
| | - J L Sun
- Demonstration Classroom, Yidu Central Hospital of Weifang, Weifang 262550, China
| | - W G Ma
- Department of Burn and Plastic Surgery, Yidu Central Hospital of Weifang, Weifang 262550, China
| | - J G Wang
- Orthopaedic Department, Chinese Medicine Hospital of Qingzhou City, Weifang 262500, China
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Wang CD, Ma Y, Li SW, Li QX, Zhang L, Lin LL, Huang BB, Jiang YS. [Analysis of risk factors for gestational diabetes mellitus in elderly multipara women in the next pregnancy]. Zhonghua Yi Xue Za Zhi 2022; 102:418-422. [PMID: 35144341 DOI: 10.3760/cma.j.cn112137-20210729-01684] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To investigate the risk factors for gestational diabetes mellitus (GDM) in elderly multipara women in the next pregnancy. Methods: A total of 219 elderly multipara women with 2 consecutive delivery records in Tianjin Binhai New Area Tanggu Obstetrics and Gynecology Hospital from January 2018 to May 2019 were included. Among them, 141 had normal glucose tolerance (NGT) and 78 of them had GDM. The clinical data of the previous and current pregnancy were collected to analyze the risk factors of GDM in elderly multipara women. Results: The average ages of 219 elderly women in previous pregnancy and this pregnancy were (31.9±2.2) and (36.7±1.5) years old, and the prevalence of GDM was 35.62% (78 cases). Compared to NGT group, GDM patients had higher fasting blood glucose(previous (5.51±1.43) vs (4.63±0.62) mmol/L; current (5.26±0.63) vs (4.59±0.30) mmol/L, 1 h blood glucose(previous (11.74±2.36) vs (9.50±1.82) mmol/L; current (11.03±2.03) vs (9.51±1.14) mmol/L) in 75 g oral glucose tolerance test (OGTT) in both previous and current pregnancy. The rates of cesarean section, in both previous and current pregnancy were higher in GDM group (previous 34.6% vs 4.3%; current 52.6% vs 22.0%). Furthermore, prenatal weight and body mass index (BMI) of the previous pregnancy, pre-pregnancy weight and BMI, and prenatal BMI of this pregnancy were also higher in GDM group, and the differences were all statistically significant (all P<0.05). Logistic multivariate regression analysis indicated cesarean section history (OR=10.80, 95%CI: (4.09-28.54)), GDM history of previous pregnancy (OR=10.64, 95%CI: (4.02-28.20)), 75 g OGTT fasting blood glucose≥ 4.86 mmol/L (OR=2.70, 95%CI: (1.27-5.70)), 1 h blood glucose after glucose administration ≥ 8.45 mmol/L (OR=1.78, 95%CI: (1.37-2.31)) were risk factors for GDM in elderly multipara women of this pregnancy. Conclusion: The risk of GDM in elderly multipara women with a history of cesarean section and GDM increases significantly. Results of OGTT in previous pregnancy also has predictive value.
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Affiliation(s)
- C D Wang
- Department of Obstetrics and Gynecology, Tianjin Binhai New Area Tanggu Obstetrics and Gynecology Hospital, Tianjin 300450, China
| | - Y Ma
- Department of Obstetrics and Gynecology, Tianjin Binhai New Area Tanggu Obstetrics and Gynecology Hospital, Tianjin 300450, China
| | - S W Li
- Department of Obstetrics and Gynecology, Tianjin Binhai New Area Tanggu Obstetrics and Gynecology Hospital, Tianjin 300450, China
| | - Q X Li
- Department of Obstetrics and Gynecology, Tianjin Binhai New Area Tanggu Obstetrics and Gynecology Hospital, Tianjin 300450, China
| | - L Zhang
- Department of Obstetrics and Gynecology, Tianjin Binhai New Area Tanggu Obstetrics and Gynecology Hospital, Tianjin 300450, China
| | - L L Lin
- Department of Obstetrics and Gynecology, Tianjin Binhai New Area Tanggu Obstetrics and Gynecology Hospital, Tianjin 300450, China
| | - B B Huang
- Department of Obstetrics and Gynecology, Tianjin Binhai New Area Tanggu Obstetrics and Gynecology Hospital, Tianjin 300450, China
| | - Y S Jiang
- Department of Endocrinology, Tianjin Fifth Central Hospital, Tianjin 300450, China
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Wang A, Ma WG, Wang CD, Zhang HQ, Liu F. [Clinical effects of autologous platelet rich plasma gel combined with vacuum sealing drainage techno-logy in repairing refractory wounds]. Zhonghua Shao Shang Za Zhi 2021; 37:42-48. [PMID: 33499568 DOI: 10.3760/cma.j.cn501120-20200105-00004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinical effects of autologous platelet rich plasma (PRP) gel in combination with vacuum sealing drainage (VSD) technology in repairing refractory wounds. Methods: From March 2011 to January 2015, 44 patients with refractory wounds meeting the inclusion criteria were recruited into VSD alone group, who were admitted to the Department of Burns and Plastic Surgery of the Yidu Central Hospital of Weifang and received intermittent VSD treatment. From February 2015 to September 2019, 43 patients with refractory wounds meeting the inclusion criteria were recruited into PRP+ VSD group, who were admitted to the same unit as above-mentioned and received PRP combined with intermittent VSD treatment. The retrospective cohort study was conducted. There were 24 males and 20 females with age of (37.5±2.2) years in VSD alone group, and there were 25 males and 18 females with age of (37.0±2.5) years in PRP+ VSD group. The wound exudate of patients in the two groups before and 7 and 14 d after the first treatment were collected for bacterial culture, and the positive rate of bacterial culture was calculated. The wound healing of patients in the two groups was observed on 7, 14, and 21 d after the first treatment, and the wound healing rate was calculated. The complete wound healing time of patients in the two groups was recorded. The degree of wound pain of patients in the two groups was evaluated by the Visual Analog Scale (VAS) before and 14 d after the first treatment. The scar hyperplasia of patients in the two groups was evaluated by the Vancouver Scar Scale (VSS) in 1 and 2 months after the wound healed completely. The occurrence of adverse reactions of patients in the two groups during the whole period of treatment was observed and the incidence of adverse reactions was calculated. Data were statistically analyzed with analysis of variance for repeated measurement, chi-square test, paired t test, and Bonferroni correction. Results: The positive rates of bacterial culture in wound exudate of patients in PRP+ VSD on 7 and 14 d after the first treatment were 37.2% (16/43) and 11.6% (5/43), which were significantly lower than 56.8% (25/44) and 29.5% (13/44) in VSD alone group, χ(2)=4.212, 4.255, P<0.05. The wound healing rates of patients in PRP+ VSD group on 7 and 14, and 21 d after the first treatment were respectively (58±14)%, (70±13)%, (89±12)%, which were significantly higher than (41±11)%, (60±11)%, (74±12)% in VSD alone group, t=6.323, 3.820, 5.751, P<0.01. The complete wound healing time of patients in PRP+ VSD group was (30±6) d, which was significantly shorter than (61±8) d in VSD alone group, t=20.890, P<0.05. The VAS score of patients in PRP+ VSD group was significantly lower than that in VSD alone group on 14 d after the first treatment (t=13.904, P<0.01). The VSS score of patients in PRP+ VSD group was significantly lower than that in VSD alone group in 1 and 2 months after the wound healed completely (t=3.307, 3.637, P<0.01). The incidence of adverse reactions of patients in PRP+ VSD group during the whole period of treatment was 7.0% (3/43), which was significantly lower than 22.7% (10/44) in VSD alone group, χ(2)=4.245, P<0.05. Conclusions: Autologous PRP gel combined with VSD technology in repairing refractory wounds not only has good bacteriostatic effect, but also can increase wound healing rate, shorten wound healing time, alleviate wound pain, reduce scar hyperplasia, with less adverse reaction, which is worthy of promotion.
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Affiliation(s)
- A Wang
- Department of Burns and Plastic Surgery, Yidu Central Hospital of Weifang, Weifang 262500, China
| | - W G Ma
- Department of Burns and Plastic Surgery, Yidu Central Hospital of Weifang, Weifang 262500, China
| | - C D Wang
- Department of Interventional Therapy, Yidu Central Hospital of Weifang, Weifang 262500, China
| | - H Q Zhang
- Department of Burns and Plastic Surgery, Yidu Central Hospital of Weifang, Weifang 262500, China
| | - F Liu
- Department of Burns and Plastic Surgery, Dezhou People's Hospital, Dezhou 253045, China
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Ma WG, Wang CD, Wang A, Liu F. [Effect of free medial plantar perforator flap in repairing deep burn wound on palm with the assistance of three dimensional computed tomography angiography]. Zhonghua Shao Shang Za Zhi 2020; 36:323-326. [PMID: 32340425 DOI: 10.3760/cma.j.cn501120-20190308-00091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the effect of free medial plantar perforator flap in repairing deep burn wound on palm with assistance of three dimensional computed tomography angiography (CTA). Methods: From March 2015 to January 2018, 11 patients with deep burn wounds of palm were admitted to the Department of Burns and Plastic Surgery of Yidu Central Hospital of Weifang City, including 6 males and 5 females, aged 19-53 years. The wound area after debridement was 3.0 cm×2.5 cm-8.0 cm×6.0 cm. Before the operation, CTA of the foot was performed, and the three dimensional digital model was reconstructed by computer software to observe the initial position, course, and distribution of the arteries and veins in the donor site. The medial plantar perforator flap was designed according to the area and shape of the wound, with area of 3.5 cm×3.0 cm-8.5 cm×6.5 cm. After the wound was covered by the flap, the perforating branch of the medial plantar artery was anastomosed end to end with the carpal epithelial branch of the ulnar artery, the accompanying vein or the branch of the great saphenous vein was anastomosed end to end with the accompanying vein of the carpal epithelial branch of the ulnar artery, and the terminal branch of the saphenous nerve or the medial dorsal cutaneous nerve was anastomosed end to end with the superficial palmar branch of the ulnar nerve. The wound of donor site was covered with full-thickness skin graft from the outer thigh of the same side. The perforators of the medial plantar artery observed during the operation were compared with the reconstructed three dimensional CTA images. The survival of flap was observed, and the appearance and function of the flap were followed up and evaluated with trial standard for the evaluation of the functions of the upper limbs of the Hand Surgery Society of the Chinese Medical Association. Results: The initial position, course, and distribution of the perforator of the medial plantar artery during the operation were basically the same as those of the reconstructed three dimensional CTA images before the operation. All the flaps of patients survived after the operation. During the 6 months to 1 year follow-up, the appearance of flap was good, with no obvious swelling or pigmentation, but with good elasticity. The discrimination distance between the two points was 5.0-8.0 mm, and the flaps were evaluated as excellent in 4 cases, good in 6 cases, and fair in 1 case. Conclusions: The free medial plantar perforator flap is an ideal choice for repair of the deep burn wound on palm. Three dimensional CTA before the operation can detect condition of vascular variation, with high accuracy of vascular anastomosis during operation.
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Affiliation(s)
- W G Ma
- Department of Burns and Plastic Surgery, Yidu Central Hospital of Weifang City, Weifang 262500, China
| | - C D Wang
- Department of Interventional Therapy, Yidu Central Hospital of Weifang City, Weifang 262500, China
| | - A Wang
- Department of Burns and Plastic Surgery, Yidu Central Hospital of Weifang City, Weifang 262500, China
| | - F Liu
- Department of Burns and Plastic Surgery, Dezhou People's Hospital, Dezhou 253045, China
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Guo LM, Wang Z, Li SP, Wang M, Yan WT, Liu FX, Wang CD, Zhang XD, Chen D, Yan J, Xiong K. RIP3/MLKL-mediated neuronal necroptosis induced by methamphetamine at 39°C. Neural Regen Res 2020; 15:865-874. [PMID: 31719251 PMCID: PMC6990769 DOI: 10.4103/1673-5374.268902] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [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] [Indexed: 02/06/2023] Open
Abstract
Methamphetamine is one of the most prevalent drugs abused in the world. Methamphetamine abusers usually present with hyperpyrexia (39°C), hallucination and other psychiatric symptoms. However, the detailed mechanism underlying its neurotoxic action remains elusive. This study investigated the effects of methamphetamine + 39°C on primary cortical neurons from the cortex of embryonic Sprague-Dawley rats. Primary cortex neurons were exposed to 1 mM methamphetamine + 39°C. Propidium iodide staining and lactate dehydrogenase release detection showed that methamphetamine + 39°C triggered obvious necrosis-like death in cultured primary cortical neurons, which could be partially inhibited by receptor-interacting protein-1 (RIP1) inhibitor Necrostatin-1 partially. Western blot assay results showed that there were increases in the expressions of receptor-interacting protein-3 (RIP3) and mixed lineage kinase domain-like protein (MLKL) in the primary cortical neurons treated with 1 mM methamphetamine + 39°C for 3 hours. After pre-treatment with RIP3 inhibitor GSK’872, propidium iodide staining and lactate dehydrogenase release detection showed that neuronal necrosis rate was significantly decreased; RIP3 and MLKL protein expression significantly decreased. Immunohistochemistry staining results also showed that the expressions of RIP3 and MLKL were up-regulated in brain specimens from humans who had died of methamphetamine abuse. Taken together, the above results suggest that methamphetamine + 39°C can induce RIP3/MLKL regulated necroptosis, thereby resulting in neurotoxicity. The study protocol was approved by the Medical Ethics Committee of the Third Xiangya Hospital of Central South University, China (approval numbers: 2017-S026 and 2017-S033) on March 7, 2017.
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Affiliation(s)
- Li-Min Guo
- Department of Neurobiology and Human Anatomy, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China
| | - Zhen Wang
- Department of Neurobiology and Human Anatomy, School of Basic Medical Science, Central South University, Changsha, Hunan Province; Department of Basic Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu Province, China
| | - Shi-Ping Li
- Department of Neurology, People's Hospital of Lianhua, Pingxiang, Jiangxi Province, China
| | - Mi Wang
- Department of Neurobiology and Human Anatomy, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China
| | - Wei-Tao Yan
- Department of Neurobiology and Human Anatomy, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China
| | - Feng-Xia Liu
- Department of Human Anatomy, School of Basic Medical Science, Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Chu-Dong Wang
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China
| | - Xu-Dong Zhang
- Narcotics Division, Municipal Security Bureau, Changsha, Hunan Province, China
| | - Dan Chen
- Department of Neurobiology and Human Anatomy, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China
| | - Jie Yan
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China
| | - Kun Xiong
- Department of Neurobiology and Human Anatomy, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China
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Zheng JZ, Wang CD, Wang SH, Lin YY, Zhao KL, Wu DT, Fu WJ. [Spatial Variation of Soil Heavy Metals in Lin'an City and Its Potential Risk Evaluation]. Huan Jing Ke Xue 2018; 39:2875-2883. [PMID: 29965646 DOI: 10.13227/j.hjkx.201711028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Urban soil is an important part of the urban ecosystem, which is strongly correlated with human health and life quality. In this study, Lin'an city was chosen as a typical small city to study the spatial variation and distribution of heavy metals in urban soils and their pollution characteristics using multivariate analysis, geostatistics, and GIS techniques. A total of 62 soil samples were collected from the study areas. The results indicated that the average concentrations of soil Mn, Cu, Zn, Pb, Cr, and Cd were 439.42, 42.23, 196.80, 62.55, 63.65, and 0.22 mg·kg-1, respectively. Compared with the background values and the environmental quality standards, these heavy metals were accumulated in urban soils to some extent. Almost 80% of the study area was polluted by heavy metals. The single potential ecological risk index of heavy metals indicated that Pb had the highest ecological risk. The pH and most of the heavy metals had strong correlations, and there were strong correlations among the heavy metals. The principle component analysis (PCA) showed that Pb, Zn, and Cu had the same pollution source, which was related to vehicle exhausts; Mn and Cr were mainly from the parent material; and Cd was from the emissions of manufacturing plants. The spatial structure and distribution of heavy metals and their corresponding available fractions had strong spatial autocorrelation with all of the C0/(C0+C)<50%. Their spatial patterns were influenced by human activities.
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Affiliation(s)
- Jing-Zhi Zheng
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, School of Environmental and Resources Science, Zhejiang A & F University, Lin'an 311300, China
| | - Chu-Dong Wang
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, School of Environmental and Resources Science, Zhejiang A & F University, Lin'an 311300, China
| | - Shi-Han Wang
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, School of Environmental and Resources Science, Zhejiang A & F University, Lin'an 311300, China
| | - Yu-Ye Lin
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, School of Environmental and Resources Science, Zhejiang A & F University, Lin'an 311300, China
| | - Ke-Li Zhao
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, School of Environmental and Resources Science, Zhejiang A & F University, Lin'an 311300, China
| | - Dong-Tao Wu
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, School of Environmental and Resources Science, Zhejiang A & F University, Lin'an 311300, China
| | - Wei-Jun Fu
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, School of Environmental and Resources Science, Zhejiang A & F University, Lin'an 311300, China
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Sun HC, Wang CD, Li MY, Li LP, Zhao XL, Wang YP, Ye J. [Analysis of gene mutation and clinical characteristics in patients with idiopathic epilepsy]. Zhonghua Yi Xue Za Zhi 2017; 97:2439-2442. [PMID: 28835045 DOI: 10.3760/cma.j.issn.0376-2491.2017.31.011] [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 explore the association between gene mutations and clinical characteristics in Chinese patients with epilepsy. Methods: A total of twenty-three patients with idiopathic epilepsy admitted to the Xuanwu Hospital of Capital Medical University from January 2014 to July 2016 were included.The age at onset of epilepsy ranged from 8 months to 31 years.All patients were screened for mutations by next-generation of sequencing (NGS), using a targeted capture panel of epilepsy and related seizures to screen forgene causative for or related to epilepsy.Some mutations were verified for inheritance by Sanger sequencing of two generations in the family.The differences in clinical characteristics among different mutation carriers were compared. Results: A total of 38 mutations were identified in 23 patients.Most of the patients presented with tonic-clonic seizures, and most were not accompanied by mental retardation.Causative genes were dominated by those encoding ion channel, enzyme and proteins with special functions.Although mutation carriers for genes encoding ion channel proteins and those with special functions were not significantly different in age at onset, types of seizure, family history or complications(P>0.05), patients presenting with tonic-clonic seizures had higher frequency of mutations in genes encoding ion channel (15/15)than those encoding proteins with special function(16/20)(P=0.066). Conclusions: NGS is a useful technology in detecting mutations in patients with various types of epilepsy and aiding in etiological diagnosis of the disease.Tonic-clonic seizures may correlate with mutations in genes encoding ion channel.
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Affiliation(s)
- H C Sun
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing 100053, China
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11
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Ling SS, Zhu Y, Lan D, Li DS, Pang HZ, Wang Y, Li DY, Wei RP, Zhang HM, Wang CD, Hu YD. Analysis of the cytochrome c oxidase subunit II (COX2) gene in giant panda, Ailuropoda melanoleuca. Genet Mol Res 2017; 16:gmr-16-01-gmr.16019158. [PMID: 28128409 DOI: 10.4238/gmr16019158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The giant panda, Ailuropoda melanoleuca (Ursidae), has a unique bamboo-based diet; however, this low-energy intake has been sufficient to maintain the metabolic processes of this species since the fourth ice age. As mitochondria are the main sites for energy metabolism in animals, the protein-coding genes involved in mitochondrial respiratory chains, particularly cytochrome c oxidase subunit II (COX2), which is the rate-limiting enzyme in electron transfer, could play an important role in giant panda metabolism. Therefore, the present study aimed to isolate, sequence, and analyze the COX2 DNA from individuals kept at the Giant Panda Protection and Research Center, China, and compare these sequences with those of the other Ursidae family members. Multiple sequence alignment showed that the COX2 gene had three point mutations that defined three haplotypes, with 60% of the sequences corresponding to haplotype I. The neutrality tests revealed that the COX2 gene was conserved throughout evolution, and the maximum likelihood phylogenetic analysis, using homologous sequences from other Ursidae species, showed clustering of the COX2 sequences of giant pandas, suggesting that this gene evolved differently in them.
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Affiliation(s)
- S S Ling
- China Conservation and Research Center for Giant Panda, Wolong, China
| | - Y Zhu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, Sichuan, China
| | - D Lan
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, Sichuan, China
| | - D S Li
- China Conservation and Research Center for Giant Panda, Wolong, China
| | - H Z Pang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, Sichuan, China
| | - Y Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, Sichuan, China
| | - D Y Li
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, Sichuan, China
| | - R P Wei
- China Conservation and Research Center for Giant Panda, Wolong, China
| | - H M Zhang
- China Conservation and Research Center for Giant Panda, Wolong, China
| | - C D Wang
- China Conservation and Research Center for Giant Panda, Wolong, China
| | - Y D Hu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Ya'an, Sichuan, China
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12
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Xu D, Chen W, Zhou WX, Wang CD, Fei GJ, Zhu LM, Xin HW, Zhong DR, Sun G, Fang XC. [Associations of sigmoid colon mucosal mast cells with bowel symptoms and psychological status in patients with irritable bowel syndrome with diarrhea]. Zhonghua Yi Xue Za Zhi 2016; 96:2398-403. [PMID: 27545031 DOI: 10.3760/cma.j.issn.0376-2491.2016.30.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate the bowel symptoms and psychological status of patients with irritable bowel syndrome (IBS) with diarrhea (IBS-D), and to verify whether sigmoid colon mucosal mast cells (MCs) and their activation have effect on the symptoms and psychological status of IBS-D patients. METHODS Patients meeting Rome Ⅲ diagnostic and subtyping criteria of IBS-D who visited the outpatient clinic of gastroenterology of Peking Union Medical College Hospital were consecutively enrolled between July 2009 and June 2012. IBS symptoms questionnaire was completed using face-to-face interview, and Hamilton Anxiety Scale (HAMA)/ Hamilton Depression Scale (HAMD) were administrated to evaluate psychological status, both by well-trained investigators. Mast cell tryptase monoclonal antibody was used for immunohistochemical staining to detect MCs and degranulated MCs in mucosal biopsy of sigmoid colon. MCs and degranulated MCs were blindly counted by a senior pathologist, and presented as number of cells in high power field (HPF) and percentage of activated MCs. Correlation analysis was performed using Spearman rank correlation analysis. RESULTS Ninety-seven patients with IBS-D were enrolled in this study, with mean age of (44±11) years. 70.10%(68 cases) of the IBS-D patients had comorbid anxiety and/or depression. The median total numbers of MCs, activated MCs, and percentage of activated MCs in sigmoid mucosa were 11.60 (7.09)/HPF, 2.00 (1.40) /HPF, and 17.50% (10.90%), respectively. Patients having abdominal pain/discomfort before bowel movement "every day with intermediate to high severity" had significantly larger numbers of total MCs in sigmoid colon compared with those with pain or discomfort "not every day and mild" [13.80(4.85)vs 7.60(5.90)/HPF, P=0.019]; the patient having "frequent" urge to have a bowel movement and mushy stools showed significantly higher percentage of activated MCs in sigmoid colon mucosa compared to those having the symptoms "some of the time" [18.75%(9.12%) vs 14.50%(13.14%), P=0.031; 21.33%(7.43%)vs 11.51%(10.65%)vs 18.42%(8.61%), P=0.030]. There was a positive correlation between the bowel movement during IBS-D onset and the percentage of activated MCs (r=0.221, P=0.030). There were no statistically significant differences in the total number of MCs and percentage of activated MCs between the patients with anxiety/depression and those without anxiety/depression (P=0.255, P=0.315). Scores of HAMA and HAMD were found not correlated with either total MCs number or percentage of activated MCs in sigmoid colon mucosa(all P>0.05). CONCLUSIONS The majority of IBS-D patients had comorbid anxiety and/or depression. The total number and activation status of MCs in sigmoid colon mucosa might be related with some intestinal symptoms in IBS-D patients. Psychological disorders might influence the pathogenesis and regression of IBS-D through brain-gut axis other than MCs in sigmoid colon mucosa.
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Affiliation(s)
- D Xu
- Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
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Hu LP, Huang XT, Sun Y, Mao JX, Wang S, Wang CD, Bao ZM. Molecular genetic analysis of heterosis in interspecific hybrids of Argopecten purpuratus x A. irradians irradians. Genet Mol Res 2015; 14:10692-704. [PMID: 26400299 DOI: 10.4238/2015.september.9.9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Argopecten purpuratus and Argopecten irradians irradians hybridization was successfully performed and the hybrid offspring displayed apparent heterosis in growth traits. To better understand the genetic basis of heterosis, the genomic composition and genetic variation of the hybrids were analyzed with amplified fragment length polymorphism (AFLP) and simple sequence repeat (SSR) markers. Seven of eight universal SSR primers displayed polymorphism in the hybrids and their parental groups, and hybrids inherited both parental geno-types at each locus. Using five primer combinations in AFLP analysis, 433 loci were amplified in the hybrids and their parental groups. The frequency of polymorphisms was 88.22%. F1 hybrids inherited 88.11 and 92.88% of AFLP bands from their parents. Some loci did not follow Mendelian Law, including 48 loci in parents that were lost, and 11 new loci that were amplified in the hybrids. The parameters of Nei's gene diversity, Shannon's Information index, genetic distance, and molecular variance between groups were calculated. The genetic differentiation between two hybrid groups (0.253) was smaller than that between hybrids and their parents (0.554 to 0.645), and was especially smaller than that between two parental groups (0.769). The high genetic similarity (0.9347) and low genetic differentiation (0.2531) between two hybrid groups suggests that these hybrid groups were genetically very close. Heterozygosities of hybrid groups were higher than those of parental groups, indicating that the hybrids had increased genetic diversity.
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Affiliation(s)
- L P Hu
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao, Shandong, China
| | - X T Huang
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao, Shandong, China
| | - Y Sun
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao, Shandong, China
| | - J X Mao
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao, Shandong, China
| | - S Wang
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao, Shandong, China
| | - C D Wang
- College of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong, China
| | - Z M Bao
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao, Shandong, China
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Wang CD, Wang DK, Cao PC, Wang ZW, Wang Z, Wang YT. Study of the relationship between the expression of nerve growth factor and aneurysm formation and prognosis. Genet Mol Res 2015; 14:4269-75. [PMID: 25966198 DOI: 10.4238/2015.april.28.8] [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: 11/03/2022]
Abstract
We sought to investigate the effect of nerve growth factor (NGF) expression on the formation and prognosis of cerebral aneurysms. Forty-eight cases were selected following a diagnosis of cerebral aneurysm using computed tomography angiography and surgical confirmation. Thirty-four cases of healthy deaths were also chosen. The tissue was tested for NGF expression changes by reverse-transcription PCR, Western blot and histopathology, and NGF expression was compared between the cerebral aneurysm and healthy groups. The expression level of NGF in cerebral aneurysm tissue was significantly increased over that observed in control tissue. The abnormal expression of NGF is related to cerebral aneurysms. The elevated expression of NGF in cerebral aneurysms may be associated with a poor prognosis.
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Affiliation(s)
- C D Wang
- Centre Laboratory, Weifang People's Hospital, Shandong, China
| | - D K Wang
- Department of Neurosurgery, Weifang People's Hospital, Shandong, China
| | - P C Cao
- Department of Neurosurgery, Weifang People's Hospital, Shandong, China
| | - Z W Wang
- Department of Neurosurgery, Weifang People's Hospital, Shandong, China
| | - Z Wang
- Department of Neurosurgery, Weifang People's Hospital, Shandong, China
| | - Y T Wang
- Department of Neurosurgery, Weifang People's Hospital, Shandong, China
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Liu WS, Geng HJ, Wang CD, Li AJ, Cao PC, Wang DK, Li G. Relationship between abnormal NOS expression and the pathogenesis of cerebral aneurysm. Genet Mol Res 2015; 14:4276-81. [PMID: 25966199 DOI: 10.4238/2015.april.28.9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We sought to investigate the relationship between abnormal expression of nitric oxide synthase (NOS) and pathogenesis of cerebral aneurysm. Brain tissues were collected from 36 patients with cerebral aneurysm confirmed by computer tomography with angiography or neurosurgical therapy. The control group consisted of 25 patients of similar age who had no vascular diseases, as confirmed by magnetic resonance imaging. Samples of cortical arterioles were collected. The structure of the aneurysms was detected by hematoxylin and eosin staining, and the expression of inducible NOS was detected by immunohistochemistry. NOS expression was significantly higher in the patient group than in the control group (patients: 30/36 strongly positive; control: 0/25 strongly positive; P < 0.05). In conclusion, the pathogenesis underlying cerebral aneurysm may be due to abnormal expression of NOS, degradation of the extracellular matrix, aggravation of a pro-inflammatory reaction, or a deficiency in arterial elasticity layer synthesis. These changes may result in a deficiency in vascular remodeling.
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Affiliation(s)
- W S Liu
- Department of Neurosurgery, Qi Lu Hospital, Shandong University, Jinan, China
| | - H J Geng
- Department of Clinical Laboratory, Affiliated Hospital of Weifang Medical College, Weifang, China
| | - C D Wang
- Centre Laboratory, Weifang People's Hospital, Shandong, China
| | - A J Li
- Department of Neurosurgery, Weifang People's Hospital, Shandong, China
| | - P C Cao
- Department of Neurosurgery, Weifang People's Hospital, Shandong, China
| | - D K Wang
- Department of Neurosurgery, Weifang People's Hospital, Shandong, China
| | - G Li
- Department of Neurosurgery, Qi Lu Hospital, Shandong University, Jinan, China
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Che TD, Wang CD, Jin L, Wei M, Wu K, Zhang YH, Zhang HM, Li DS. Estimation of the growth curve and heritability of the growth rate for giant panda (Ailuropoda melanoleuca) cubs. Genet Mol Res 2015; 14:2322-30. [PMID: 25867378 DOI: 10.4238/2015.march.27.17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Giant panda cubs have a low survival rate during the newborn and early growth stages. However, the growth and developmental parameters of giant panda cubs during the early lactation stage (from birth to 6 months) are not well known. We examined the growth and development of giant panda cubs by the Chapman growth curve model and estimated the heritability of the maximum growth rate at the early lactation stage. We found that 83 giant panda cubs reached their maximum growth rate at approximately 75-120 days after birth. The body weight of cubs at 75 days was 4285.99 g. Furthermore, we estimated that the heritability of the maximum growth rate was moderate (h(2) = 0.38). Our study describes the growth and development of giant panda cubs at the early lactation stage and provides valuable growth benchmarks. We anticipate that our results will be a starting point for more detailed research on increasing the survival rate of giant panda cubs. Feeding programs for giant panda cubs need further improvement.
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Affiliation(s)
- T D Che
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Ya'an, Sichuan, China
| | - C D Wang
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Ya'an, Sichuan, China
| | - L Jin
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Ya'an, Sichuan, China
| | - M Wei
- China Conservation and Research Center for the Giant Panda, Wolong, Sichuan, China
| | - K Wu
- China Conservation and Research Center for the Giant Panda, Wolong, Sichuan, China
| | - Y H Zhang
- China Conservation and Research Center for the Giant Panda, Wolong, Sichuan, China
| | - H M Zhang
- China Conservation and Research Center for the Giant Panda, Wolong, Sichuan, China
| | - D S Li
- China Conservation and Research Center for the Giant Panda, Wolong, Sichuan, China
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Wang XS, Zhang Y, He YH, Ma PP, Fan LJ, Wang YC, Zhang YI, Sun DX, Zhang SL, Wang CD, Song JZ, Yu Y. Aberrant promoter methylation of the CD4 gene in peripheral blood cells of mastitic dairy cows. Genet Mol Res 2013; 12:6228-39. [PMID: 24338418 DOI: 10.4238/2013.december.4.10] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Bovine mastitis is the most common and costly disease of dairy cattle. Cluster of differentiation 4 (CD4) is closely related to the immune response in mastitis. We quantified promoter CpG methylation levels of the CD4 gene in Chinese Holsteins with clinical mastitis (CM) and in healthy controls; these levels were quantitatively detected with bisulfite pyrosequencing assays and confirmed by cloning sequencing. We found that the bovine CD4 promoter had 16% more methyl groups in the cows with CM (75.0 ± 5.8%) compared to the controls (59.0 ± 8.5%). The decreased expression level of CD4 in CM cows may be downregulated by the increased DNA methylation levels in the CD4 promoter. Two-dimensional hierarchical clustering analyses showed large differences in promoter CD4 methylation between mastitic and healthy cows; the dendrogram clearly distinguished the cows with clinical mastitis from healthy controls based on methylation levels. The DNA methylation level of the CD4 gene was strongly influenced by mastitis status in all comparisons. We suggest that the DNA methylation level of the CD4 promoter can be used as a molecular marker for clinical mastitis in dairy cows.
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Affiliation(s)
- X S Wang
- Key Laboratory of Agricultural Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, College of Animal Sciences and Technology, China Agricultural University, Beijing, China
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Wang CD, Jha SK, Chen ZH, Ng TW, Liu YK, Yuen MF, Lu ZZ, Kwok SY, Zapien JA, Bello I, Lee CS, Zhang WJ. Construction and evaluation of high-quality n-ZnO nanorod/p-diamond heterojunctions. J Nanosci Nanotechnol 2012; 12:4560-4563. [PMID: 22905500 DOI: 10.1166/jnn.2012.6211] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Vertically-aligned ZnO nanorods (NRs) arrays were synthesized by a low-temperature solution method on boron-doped diamond (BDD) films. The morphology, growth direction, and crystallinity of the ZnO NRs were studied by scanning electron microscopy, X-ray diffraction and cathodoluminescence. Electrical characterization of the ZnO NR/BBD heterostructures revealed characteristic p-n junction properties with an on/off ratio of about 50 at +/- 4 V and a small reverse leakage current approximately 1 microA. Moreover, the junctions showed an ideality factor around 1.0 at a low forward voltage from 0 to 0.3 V and about 2.1 for an increased voltage ranging from 1.2 to 3.0 V, being consistent with that of an ideal diode according to the Sah-Noyce-Shockley theory.
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Affiliation(s)
- C D Wang
- Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, China
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Wang HE, Lu ZG, Xi LJ, Ma RG, Wang CD, Zapien JA, Bello I. Facile and rapid synthesis of highly porous wirelike TiO2 as anodes for lithium-ion batteries. ACS Appl Mater Interfaces 2012; 4:1608-1613. [PMID: 22360340 DOI: 10.1021/am2017738] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Highly porous wirelike TiO(2) nanostructures have been synthesized by a simple two-step process. The morphological and structural characterizations reveal that the TiO(2) wires typically have diameters from 0.4 to 2 μm, and lengths from 2 to 20 μm. The TiO(2) wires are highly porous and comprise of interconnected nanocrystals with diameters of 8 ± 2 nm resulting in a high specific surface area of 252 m(2) g(-1). The effects of experimental parameters on the structure and morphology of the porous wirelike TiO(2) have been investigated and the possible formation processes of these porous nanostructures are discussed. Galvanostatic charge/discharge tests indicate that the porous wirelike TiO(2) samples exhibit stable reversible lithium ion storage capacities of 167.1 ± 0.7, 152.1 ± 0.8, 139.7 ± 0.3, and 116.1 ± 1.1 mA h g(-1) at 0.5, 1, 2, and 5 C rates, respectively. Such improved performance could be ascribed to their unique porous and 1D nanostructures facilitating better electrolyte penetration, higher diffusion rate of electrons and lithium ion, and variation of accommodated volumes during the charge/discharge cycles.
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Affiliation(s)
- H E Wang
- Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, PR China.
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Teng BS, Wang CD, Zhang D, Wu JS, Pan D, Pan LF, Yang HJ, Zhou P. Hypoglycemic effect and mechanism of a proteoglycan from ganoderma lucidum on streptozotocin-induced type 2 diabetic rats. Eur Rev Med Pharmacol Sci 2012; 16:166-175. [PMID: 22428467] [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: 05/31/2023]
Abstract
BACKGROUND AND OBJECTIVES Diabetes mellitus inducing a leading cause of morbidity are widespread in the entire globe. The present study was to investigate the antidiabetic potency and mechanism of a proteoglycan extract, named FYGL (Fudan-Yueyang-G. lucidum), from the fruiting bodies of Ganoderma Lucidum as published recently, using streptozotocin-induced type 2 diabetic mellitus (T2DM) rats. MATERIAL AND METHODS The T2DM model rats were treated with FYGL as well as metformin and rosiglitazone. The levels of plasma glucose and insulin were measured, and the expression and activity of the protein tyrosine phosphatase 1B (PTP1B) and the tyrosine phosphorylation level of the insulin receptor (IR) 3-subunit in the livers and skeletal muscles of the T2DM rats were analyzed by immunoprecipitation and Western blotting methods. In addition, the levels of free fatty acid and serum lipid profile were measured using commercial kits for those trailed rats. RESULTS The decrease in fasting plasma glucose and the increase in insulin concentration dose- and time-dependently in the T2DM rats treated by FYGL, comparable with that by the clinical drugs, metformin and rosiglitazone. The levels of the PTP1B expression and activity were decreased, and the tyrosine phosphorylation level of the IR 1-subunit was increased in the skeletal muscles of the T2DM rats. Furthermore, FYGL significantly decreased the levels of free fatty acid, triglyceride, total cholesterol and low density lipoprotein-cholesterol as well as increased the level of high density lipoprotein-cholesterol. DISCUSSION It is suggested that the hypoglycemic mechanisms of FYGL are caused by inhibition of the PTP1B expression and activity, consequently, regulation of the tyrosine phosphorylation level of the IR 13-subunit. As those results, FYGL also controlled the plasma biochemistry indexes relative to the type 2 diabetes-accompanied metabolic disorders. This is possibly the first report on the underlying mechanisms responsible for the antidiabetic effect of Ganoderma lucidum.
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MESH Headings
- Animals
- Blood Glucose/metabolism
- Blotting, Western
- Diabetes Mellitus, Experimental/chemically induced
- Diabetes Mellitus, Experimental/drug therapy
- Diabetes Mellitus, Type 2/chemically induced
- Diabetes Mellitus, Type 2/drug therapy
- Fatty Acids, Nonesterified/blood
- Fruiting Bodies, Fungal/chemistry
- Hypoglycemic Agents
- Insulin/blood
- Lipids/blood
- Liver/metabolism
- Male
- Metformin/pharmacology
- Muscle, Skeletal/metabolism
- Protein Tyrosine Phosphatase, Non-Receptor Type 1/biosynthesis
- Proteoglycans/pharmacology
- Rats
- Rats, Sprague-Dawley
- Reishi/chemistry
- Rosiglitazone
- Thiazolidinediones/pharmacology
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Affiliation(s)
- B S Teng
- The Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, PR China
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21
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Wang CD, Chang GD, Lee YK, Chen H. A functional composite cis-element for NF kappa b and RBJ kappa in the rat pregnancy-specific glycoprotein gene. Biol Reprod 2001; 65:1437-43. [PMID: 11673260 DOI: 10.1095/biolreprod65.5.1437] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [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: 11/01/2022] Open
Abstract
The rat pregnancy-specific glycoprotein gene rnCGM3 is primarily expressed in the placenta. Previously, three DNase I footprinting sites (FPI, FPII, and FPIII) were identified in the rnCGM3 promoter region, a yeast one-hybrid screen was performed to identify the nuclear factors binding to the FPIII (5'-GCCTGGGAAAAAACTC-3') element, and RBPJ kappa, a downstream effector of the Notch signaling pathway, was identified as one of the FPIII-binding factors. In the present study, the NF kappa B member p65 was identified as another FPIII-binding factor. Electrophoretic mobility shift assays showed that NF kappa B members, including p50 and p65, bound to the FPIII site. The core binding sequence in the FPIII element for p50 and p65 is GGGAAA, which overlaps with that for RBPJ kappa. Competition exists between p50 and RBPJ kappa for binding to the FPIII element. Transient expression analyses revealed that p65 significantly stimulated the expression of a reporter gene directed by the NF kappa B core sequence in the FPIII element. However, RBPJ kappa could block this stimulation. These results suggest that the regulation of rnCGM3 expression involves both NF kappa B and RBPJ kappa, and they are mutually exclusive in the FPIII element.
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Affiliation(s)
- C D Wang
- Taiwan Graduate Institute of Biochemical Sciences, National Taiwan University, Taipei 106, Taiwan
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22
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Yuan CC, Peterson RJ, Wang CD, Goodsaid F, Waters DJ. 5' Nuclease assays for the loci CCR5-+/Delta32, CCR2-V64I, and SDF1-G801A related to pathogenesis of AIDS. Clin Chem 2000; 46:24-30. [PMID: 10620568] [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: 02/15/2023]
Abstract
BACKGROUND Variations within the human genome play important roles in human disease. To study variations related to susceptibility to AIDS, we have developed 5' nuclease assays that eliminate post-PCR molecular biology steps. METHODS TaqMan assays based on the 5' nuclease activity of Taq polymerase and fluorescent resonance energy transfer were developed to score alleles at the biallelic loci CCR5-+/Delta32, CCR2-V64I and SDF1-G801A. For each assay, 72 samples were analyzed. Data collection and analysis were performed on the Prism 7700 Sequence Detection System. For comparison with gel electrophoresis methods, each locus was also scored on a subset of 24 samples, using restriction enzymes or single-strand conformational polymorphism (SSCP). RESULTS Clear allelic discrimination was obtained on each of the 72 samples for all three TaqMan assays. The TaqMan scores for the subset of 24 samples were concordant with the restriction enzyme and SSCP scores. CONCLUSIONS Because of its simplicity, speed, and potential for automation and miniaturization, TaqMan is an excellent candidate for investigation of genetic variation in clinical, research, and forensic settings.
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Affiliation(s)
- C C Yuan
- Laboratory of Genomic Diversity, National Cancer Institute-Frederick Cancer Research and Development Center, Frederick, MD 21702, USA
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23
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Abstract
OBJECTIVE We tested the hypothesis that creamatocrit, the length of the cream column separated from milk by centrifugation and expressed as a percentage of the length of the total milk column, is a useful measure of the lipid concentration and the energy content of human milk. STUDY DESIGN Milk samples from 17 mothers of preterm infants were analyzed prospectively, fresh as well as frozen and thawed, for creamatocrit measurement and nutrient composition. RESULTS Creamatocrit correlated strongly with lipid concentration and energy content of human milk, fresh or frozen and thawed. The energy content can be calculated from the regression equation: Energy (kcal/dl) = 5.99 x creamatocrit(%) + 32.5 for a fresh sample, and energy (kcal/dl) = 6.20 x creamatocrit(%) + 35.1 for a frozen sample. CONCLUSION Calculations of energy content from the creamatocrit measurement may be useful for an accurate assessment of energy intake in preterm infants fed human milk.
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Affiliation(s)
- C D Wang
- Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, TN, USA
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24
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Qiao BL, Wang CD, Mi CF, Li FX, Shi HL, Takashima J. [Separation and identification of the llungianin A and B from the root of Pimpinella thellungiana Wolff]. Yao Xue Xue Bao 1997; 32:56-8. [PMID: 11243220] [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
Two compounds were isolated from the roots of Pimpinella thellungiana wolff. On the basis of spectral analysis (UV, IR, MS, 1HNMR, 1H-1H COSY, 13CNMR, 1H-13C COSY, DEPT), they were identified as 2-(1-ethoxy-2-hydroxy) propyl-4-methoxyphenol(I); 2-(1-ethoxy-2-hydroxy) propyl-4-methoxyphenyl-2-methyl-butyrate (II). They are new compounds named the llungianin A and B. Pharmacological tests showed that they have some hypotensive effects.
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Affiliation(s)
- B L Qiao
- Shaanxi Provincial Academy of Traditional Chinese Medicine and Materia Medica, Academy of Traditional Chinese Materia Medica, Xian 710003
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25
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Zhang K, Hu Y, Wang CD. [A study on non-ulcer dyspepsia patients with electrogastrography and gastric emptying by using SPECT technique]. Zhonghua Nei Ke Za Zhi 1996; 35:317-21. [PMID: 9387616] [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: 02/05/2023]
Abstract
Non-ulcer dyspepsia (NUD) is very common in community population. However, its pathogenesis was controversial, particularly with respect to motility disorder. In this study electrogastrogram (EGG) and gastric emptying rate (GER) by using SPECT technique (test meal labelled with 99mTc-PHY and 113In-DTPA) were carried out in healthy subjects and 27 NUD patients. In EGG examination, the authors first proposed four parameters, i.e. peak time (PT), return time (RT), degeneration rate (DR) and arrhythemia rate (AR). Comparison of EGG between NUD patients and controls showed that AR, RT, DR in NUD patients were significantly higher or longer than these in the controls (P > 0.05). Solid phase GET in NUD patients were significantly delayed than that in the controls. No significant correlation was found between EGG and GET. A delay gastric emptying cannot be predicted with EGG examination only.
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Affiliation(s)
- K Zhang
- Endoscopic Department, Anhui Provincial Hospital, Hefei
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26
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Abstract
Gastric cancer is a leading cause of cancer death in many parts of the world. None of the tumor markers available to date provide for a reliable screening/diagnostic test. By using differential display technology on gastric cancer nonmetastatic (RF1) and metastatic (RF48) cell lines, we have isolated six novel cDNA clones. Five of them have not been previously identified. However, one of them appears to be the human homolog of the bovine oligomycin sensitivity conferral protein (oscp). Northern blot analysis showed that this clone is expressed at a much higher level in the metastatic (RF48) than the nonmetastatic (RF1) cancer cell line from the same patient. High level expression of the same gene is also observed in the breast cancer cell lines BT20 and T47D. The other five novel clones isolated showed either low or no expression in the RF1 and RF48 gastric cell lines, but variable levels of expression were detectable in breast cancers cell lines and normal tissues.
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Affiliation(s)
- A N Salesiotis
- Laboratory of Molecular Oncology, National Cancer Institute-Frederick Cancer Research and Development Center, MD 21702-1201, USA
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27
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Peng HC, Chen HC, Wang CD. Intestinal lengthening experience in short-bowel swine. Zhonghua Yi Xue Za Zhi (Taipei) 1994; 54:382-8. [PMID: 7850678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
BACKGROUND Traditional therapy for short-bowel syndrome is long-term, expensive and inconvenient; it is often associated with high morbidity and mortality. Thus, there has been increasing interest in the surgical management of this syndrome. Intestinal lengthening is attractive not only because of tapering of the dilated intestine, but also for preserving the intestine that is tapered. The purposes of this study were (a) to develop a reproducible surgical technique for intestinal lengthening and (b) to assess the response of the lengthened jejunum to a short-gut situation. METHODS Fourteen pigs weighing 13-20 kg were chosen for the study. The animals were divided into three groups: Group I: two pigs received a 20 cm jejunum lengthening only; Group II: six pigs received an 80% bowel resection only; Group III: six pigs received an 80% bowel resection, followed by a 20 cm loop lengthening in the residual jejunum four to seven weeks later. All were observed for a period from 4 to 28 weeks. RESULTS All lengthened loops, of either primary lengthening (Group I) or delayed lengthening (Group III) functioned well and showed no clinical leakage. Three pigs in Group II (bowel resection only) died of malnutrition at the 5th, 10th and 19th postoperative week, respectively. Only one pig in Group III died, 67 days after bowel lengthening, from intestinal obstruction. During sacrificing laparatomy, two pigs in Group III were found to have side to side enteroenteral fistulae between the lengthened loops. The lengthened bowel was found to be normal histologically. CONCLUSIONS These results proved that intestinal lengthening is technically feasible, and may be useful for patients suffering from surgical short-bowel syndrome and who have not been completely weaned off parenteral feeding.
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Affiliation(s)
- H C Peng
- Department of Surgery, Taichung Veterans General Hospital, Taiwan, R.O.C
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28
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Wang CD, Guo YP. [Effects of T4 monomer of Tripterygium wilfordii and artificial musk on experimental allergic neuritis]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1994; 14:224-6, 197. [PMID: 7950200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
UNLABELLED Both T4 monomer of Tripterygium wilfordii and artificial musk had effects in regulating immune system and anti-inflammation. The effect of using artificial musk was the earlier the stronger. According to pharmacological features of the two drugs and pathogenesis of experimental allergic neuritis (EAN), 5 experimental groups were established, i.e., artificial musk prevented and treated groups, dexamethasone and T4 monomer treated groups, and control group. RESULTS T4 monomer could reduce the clinical score of model rabbits of EAN and significantly ameliorated inflammatory cell infiltration and demyelination. It was similar to dexamethasone. Although artificial musk had mild preventing and treating effects on the clinical and pathological changes of EAN, but was not statistically significant in comparing with control group. Our clinical or pathological data suggested that T4 monomer and dexamethasone were effective in the treatment of EAN, and that of artificial musk in preventing and treating EAN as indefinite.
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Affiliation(s)
- C D Wang
- Dept. of Neurology, Beijing Hospital
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29
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Wang CD. [Active ingredients, pharmacological action and clinical application of Tripterygium wilfordii]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1993; 13:507-9. [PMID: 8111203] [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: 01/28/2023]
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30
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Wang CD, Gallaher TK, Shih JC. Site-directed mutagenesis of the serotonin 5-hydroxytrypamine2 receptor: identification of amino acids necessary for ligand binding and receptor activation. Mol Pharmacol 1993; 43:931-40. [PMID: 8316224] [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: 01/29/2023] Open
Abstract
Serotonin 5-hydroxytryptamine (5-HT)2 receptors are implicated in the etiology of mental disease and depression. Drugs that interact with the 5-HT2 receptor are used therapeutically to treat such illnesses, and their mechanisms of action are of great interest. In this study 5-HT2 receptor-ligand interactions were examined by site-directed mutagenesis in which three aspartic acid to asparagine mutants (Asn-120, Asn-155, and Asn-172) were created and expressed in NIH3T3 cells. The Asp-120 to asparagine mutant exhibited the same affinity for 125I-lysergic acid diethylamide (125I-LSD) as did the wild-type receptor and showed a decreased and GTP-insensitive binding affinity for the agonists 5-HT and (+/-)-1-(2,5-dimethoxy-4-iodophenyl)-2-amino-propane (approximately 10-fold) and the antagonists ketanserin and mianserin (approximately 10-fold) but not spiperone. The mutation also abolished agonist-stimulated formation of [3H]polyphosphoinositides (PI). The Asn-155 mutant showed reduced binding affinity for 125I-LSD (Kd, 2.8 nM versus 0.6 nM for the wild-type receptor) and had reduced affinity for agonists (approximately 30-fold) and for antagonists (14-75-fold). However, the Asn-155 receptor retained GTP sensitivity and the ability to stimulate PI formation. The Asn-172 mutant retained the wild-type Kd value for 125I-LSD, exhibited only approximately 5-fold reduced affinity for 5-HT and (+/-)-1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane while retaining GTP-sensitive agonist binding showed no change in affinity for ketanserin, and had a small decrease in mianserin and spiperone binding (approximately 6-fold). The Asn-172 receptor also retained the ability to form PI. These results indicate that Asp-120 is necessary for allosteric activation of the guanine nucleotide-binding protein. Asp-155 is necessary for high affinity binding, probably by acting as a counterion for the amine group of the ligand. The different effects of the three mutations on ketanserin, mianserin, and spiperone binding affinity suggest that these antagonists may share overlapping but different binding domains. The information provided by this study may facilitate the design of therapeutic site-selective compound based on the structure of the 5-HT2 receptor.
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Affiliation(s)
- C D Wang
- Department of Molecular Pharmacology and Toxicology, School of Pharmacy, University of Southern California, Los Angeles 90033
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31
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Abstract
Based on the quasi-continuity model, and using the method of group theory, we studied the normal vibrations of the VL- and the CHL-beta-barrels in an IgG molecule. We put emphasis on the Raman- and the infrared-active normal modes. The Raman modes we obtained include both the breathing motion mode (or the dominant low-frequency mode) which corresponds to the maximum peak in the Raman spectrum, and the normal modes that correspond to the lower peaks. Our calculated vibration frequencies are found to be in good agreement with the experimental results observed by Painter et al. (Biopolymers 20 (1981) 243). The method and work presented in this paper may improve Chou's quasi-continuity theory in calculating the vibrational modes of a beta-barrel protein.
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Affiliation(s)
- W G Han
- Department of Physics, Tianjin University, People's Republic of China
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32
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Affiliation(s)
- J C Shih
- Department of Molecular Pharmacology and Toxicology, University of Southern California, School of Pharmacy, Los Angeles 90033
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33
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Savarese TM, Wang CD, Fraser CM. Site-directed mutagenesis of the rat m1 muscarinic acetylcholine receptor. Role of conserved cysteines in receptor function. J Biol Chem 1992; 267:11439-48. [PMID: 1317867] [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: 12/26/2022] Open
Abstract
There are 9 cysteine residues in the rat m1 muscarinic acetylcholine receptor (mAChR) that are conserved among all five mammalian mAChR subtypes sequenced to date. To study the role of these cysteines in rat m1 mAChR function, site-directed mutagenesis was used to convert each Cys residue to Ser, and the mutant receptor genes were transfected into mAChR-deficient Chinese hamster ovary (CHO) cells. Substitution of Cys391 (extracellular loop III) or Cys421 and Cys435 (carboxyl terminus) produces receptors with wild type phenotype. Cells transfected with Ser98 or Ser178 (extracellular loops I and II, respectively) receptor genes display no carbachol-mediated hydrolysis of phosphoinositides (PI), and membranes prepared from these cells do not bind the muscarinic antagonist [3H] quinuclidinyl benzilate, even though the cells express transcripts of the m1 mAChR as determined by RNA hybridization analysis. Since biochemical evidence suggests that these cysteines form a disulfide bridge (Curtis, C. A. M., Wheatley, M., Bansal, S., Birdsall, N. J. M., Eveleigh, P., Pedder, E. K., Poyner, D., and Hulme, E. C. (1989) 264, 489-495), our findings imply that this disulfide linkage may be critical for formation of the ligand binding domain or for proper protein folding. The Ser394 mAChR (extracellular loop III) exhibits a 44% decrease in efficacy for carbachol-mediated stimulation of PI hydrolysis relative to the wild type receptor, but displays normal ligand binding affinities. The Ser407 m1 mAChR (transmembrane helix VII) displays a decreased efficacy for eliciting carbachol-mediated PI hydrolysis (39% that of CHO cells transfected with the wild type receptor) and a 4-fold shift to the right in the carbachol dose-response curve, which is consistent with the 4-fold decrease in carbachol affinity at the Ser407 m1 mAChR. In contrast, the Ser417 m1 mAChR (transmembrane helix VII) displays an increase in carbachol affinity and a shift to the left in the carbachol dose-response curve for PI hydrolysis. These findings suggest that cysteine residues in the seventh transmembrane helix of the m1 mAChR may influence agonist binding and the efficiency of receptor activation.
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Affiliation(s)
- T M Savarese
- Section on Molecular Neurobiology, National Institute on Alcohol Abuse and Alcoholism, Rockville, Maryland 20852
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34
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Wang CD, Buck MA, Fraser CM. Site-directed mutagenesis of alpha 2A-adrenergic receptors: identification of amino acids involved in ligand binding and receptor activation by agonists. Mol Pharmacol 1991; 40:168-79. [PMID: 1678850] [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: 12/28/2022] Open
Abstract
Molecular cloning of the alpha 2A-adrenergic receptor has shown that this receptor is a member of the gene superfamily of guanine nucleotide-binding protein (G protein)-coupled receptors. The alpha 2A-adrenergic receptor expressed in Chinese hamster ovary (CHO) cells attenuates and potentiates forskolin-stimulated cAMP production through independent signaling pathways. To examine the role of three conserved aspartic acid and two conserved serine residues in alpha 2A-adrenergic receptor function, we substituted asparagine for aspartic acid or alanine for serine and characterized the mutant receptors in stably transfected CHO cells. Asn113 mutant alpha 2-adrenergic receptors display no [3H] yohimbine specific binding, at concentrations up to 1000 nM. In transfected cells expressing the Asn113 mutant receptor, agonists, at concentrations up to 0.1 mM, produce small decreases (approximately 10% of wild-type values) in forskolin-stimulated cAMP and potentiate forskolin-stimulated cAMP concentrations in a dose-dependent manner, with EC50 values approximately 500-fold higher than those for the wild-type receptor. These findings suggest that Asp113 may be involved in high affinity binding of agonists and antagonists, as has been previously reported for beta 2-adrenergic and m1 muscarinic acetylcholine receptors. Asn79 mutant alpha 2-adrenergic receptors display high affinity agonist binding that is insensitive to guanine nucleotides, suggesting an altered receptor-G protein coupling. Furthermore, agonist binding to Asn79 mutant receptors elicits no change in forskolin-stimulated cAMP concentrations, similar to earlier findings that the corresponding residue in beta 2-adrenergic and muscarinic receptors is required for effector stimulation. Asp130 appears to influence receptor-G protein coupling. Mutation of this residue eliminates high affinity, guanine nucleotide-sensitive, agonist binding and produces a rightward shift in the dose-response curves for agonist-mediated inhibition of forskolin-stimulated cAMP production, compared with the wild-type receptor. Moreover, agonist potentiation of forskolin-stimulated cAMP levels is abolished if Asp130 is replaced by Asn, supporting the hypothesis that inhibition and potentiation of forskolin-stimulated cAMP production in CHO cells proceed through distinct signaling pathways. Characterization of Ala204 mutant alpha 2A-adrenergic receptors suggests a possible role for Ser204 in hydrogen bond interactions with the para-hydroxyl group of the phenyl ring of the catecholamines, as has been previously described for the corresponding serine in beta 2-adrenergic receptors.(ABSTRACT TRUNCATED AT 400 WORDS)
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Affiliation(s)
- C D Wang
- Section on Molecular Neurobiology, National Institute on Alcohol Abuse and Alcoholism, Rockville, Maryland 20852
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35
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Wang SH, Guo SH, Wu ZK, Wang CD, Ma YZ, Gu YD. [Advances in and retrospects of orthopedics in past 40 years in China]. Zhonghua Wai Ke Za Zhi 1991; 29:35-7. [PMID: 2032498] [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: 12/29/2022]
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36
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Wang CD. [Schuller's position image analysis in 110 cases with temporomandibular joint disturbance syndrome]. Zhonghua Kou Qiang Yi Xue Za Zhi 1990; 25:117-9. [PMID: 2119990] [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: 12/30/2022]
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Fraser CM, Wang CD, Robinson DA, Gocayne JD, Venter JC. Site-directed mutagenesis of m1 muscarinic acetylcholine receptors: conserved aspartic acids play important roles in receptor function. Mol Pharmacol 1989; 36:840-7. [PMID: 2557534] [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: 01/01/2023] Open
Abstract
Muscarinic acetylcholine receptors contain a region encompassing the second and third transmembrane domains that is rich in conserved aspartic acid residues. To investigate the role of four conserved aspartic acids at positions 71, 99, 105, and 122 in muscarinic receptor function, point mutations in the rat m1 muscarinic receptor gene were made that converted each Asp to Asn, and wild type or mutant genes were stably expressed in Chinese hamster ovary cells that normally lack muscarinic receptors. Substitution of Asp71 or Asp122 with Asn produced mutant receptors that displayed high affinity for carbachol but decreased efficacy and potency, respectively, in agonist-induced activation of phosphoinositide hydrolysis, suggesting that these residues may mediate receptor-GTP binding protein interactions. Substitution of Asp99 or Asp105 with Asn produced marked decreases in ligand binding affinities and/or covalent incorporation of [3H] propylbenzilylcholine mustard, suggesting that these residues may be involved in receptor-ligand interactions.
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Affiliation(s)
- C M Fraser
- Section of Receptor Biochemistry and Molecular Biology, National Institute of Neurological Disorders and Stroke, Bethesda, Maryland 20892
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38
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Fraser CM, Chung FZ, Wang CD, Venter JC. Site-directed mutagenesis of human beta-adrenergic receptors: substitution of aspartic acid-130 by asparagine produces a receptor with high-affinity agonist binding that is uncoupled from adenylate cyclase. Proc Natl Acad Sci U S A 1988; 85:5478-82. [PMID: 2840663 PMCID: PMC281780 DOI: 10.1073/pnas.85.15.5478] [Citation(s) in RCA: 103] [Impact Index Per Article: 2.9] [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: 01/02/2023] Open
Abstract
By using oligonucleotide-directed mutagenesis, we have produced a point mutation (guanine to adenine) at nucleotide 388 of the gene for human beta-adrenergic receptor (beta AR) that results in a substitution of asparagine for the highly conserved aspartic acid at position 130 in the putative third transmembrane domain of the human beta AR ([Asn130]beta AR). We have examined the functional significance of this mutation in B-82 cells continuously expressing the mutant [Asn130]beta AR. The mutant [Asn130]beta AR displayed normal antagonist binding but unusually high-affinity agonist binding (5- to 10-fold higher than wild-type beta AR), consistent with a single class of high-affinity binding sites. The mutant beta AR displayed guanine nucleotide-sensitive changes in agonist affinity (3- to 5-fold shift) implying an interaction between the beta AR and the stimulatory guanine nucleotide-binding regulatory protein; however, the ability of guanine nucleotides to alter agonist affinity was attenuated. Addition of saturating concentrations of isoproterenol to cell cultures expressing mutant [Asn130]-beta ARs had no effect on intracellular levels of cAMP, indicating that the mutant beta AR is unable to affect stimulation of adenylate cyclase. These results indicate that substitution of the aspartic acid with asparagine at residue 130 of the human beta AR dissociates the well-characterized guanine nucleotide effects on agonist affinity from those on activation of the stimulatory guanine nucleotide-binding regulatory protein and adenylate cyclase and suggests the existence of two distinct counterions for the amine portion of catecholamines that are associated with high- and low-affinity agonist binding states of beta AR.
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Affiliation(s)
- C M Fraser
- Section of Receptor Biochemistry and Molecular Biology, National Institute of Neurological and Communicative Disorders and Stroke, Bethesda, MD 20892
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39
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Chung FZ, Wang CD, Potter PC, Venter JC, Fraser CM. Site-directed mutagenesis and continuous expression of human beta-adrenergic receptors. Identification of a conserved aspartate residue involved in agonist binding and receptor activation. J Biol Chem 1988; 263:4052-5. [PMID: 2831218] [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: 01/02/2023] Open
Abstract
Using a new expression vector that allows stable and steroid inducible expression of the human beta 2-adrenergic receptor in mouse L cells, we have examined the functional significance of the highly conserved aspartate residue in the putative second transmembrane region of the receptor. Substitution of aspartate 79 with asparagine produced a mutant receptor that displays the expected affinity and stereoselectivity for antagonists but a 40-, 140-, and 240-fold reduction in its affinity for isoproterenol, epinephrine, and norepinephrine, respectively. This receptor mutant does not display guanine nucleotide-sensitive high affinity binding of agonists. Addition of saturating concentrations of isoproterenol to cell cultures expressing the mutant receptor produces a slight, albeit significant, increase in intracellular levels of cyclic AMP as compared to cells expressing wild type receptor. These observations demonstrate that substitution of aspartate with asparagine at residue 79 in the human beta-adrenergic receptor differentially affects the binding of catecholamines and produces a functional uncoupling of receptors and stimulatory guanine nucleotide regulatory proteins (Gs). These data are consistent with a role for aspartate 79 as a counterion to the amine in catecholamines and in agonist-induced activation of the beta-adrenergic receptor associated with high affinity ligand binding, Gs coupling, and adenylate cyclase stimulation.
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Affiliation(s)
- F Z Chung
- Section of Receptor Biochemistry and Molecular Biology, National Institute of Neurological and Communicative Disorders and Stroke, Bethesda, Maryland 20892
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40
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Chung FZ, Wang CD, Potter PC, Venter JC, Fraser CM. Site-directed mutagenesis and continuous expression of human beta-adrenergic receptors. Identification of a conserved aspartate residue involved in agonist binding and receptor activation. J Biol Chem 1988. [DOI: 10.1016/s0021-9258(18)68888-x] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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41
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Gocayne J, Robinson DA, FitzGerald MG, Chung FZ, Kerlavage AR, Lentes KU, Lai J, Wang CD, Fraser CM, Venter JC. Primary structure of rat cardiac beta-adrenergic and muscarinic cholinergic receptors obtained by automated DNA sequence analysis: further evidence for a multigene family. Proc Natl Acad Sci U S A 1987; 84:8296-300. [PMID: 2825184 PMCID: PMC299529 DOI: 10.1073/pnas.84.23.8296] [Citation(s) in RCA: 124] [Impact Index Per Article: 3.4] [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: 01/02/2023] Open
Abstract
Two cDNA clones, lambda RHM-MF and lambda RHB-DAR, encoding the muscarinic cholinergic receptor and the beta-adrenergic receptor, respectively, have been isolated from a rat heart cDNA library. The cDNA clones were characterized by restriction mapping and automated DNA sequence analysis utilizing fluorescent dye primers. The rat heart muscarinic receptor consists of 466 amino acids and has a calculated molecular weight of 51,543. The rat heart beta-adrenergic receptor consists of 418 amino acids and has a calculated molecular weight of 46,890. The two cardiac receptors have substantial amino acid homology (27.2% identity, 50.6% with favored substitutions). The rat cardiac beta receptor has 88.0% homology (92.5% with favored substitutions) with the human brain beta receptor and the rat cardiac muscarinic receptor has 94.6% homology (97.6% with favored substitutions) with the porcine cardiac muscarinic receptor. The muscarinic cholinergic and beta-adrenergic receptors appear to be as conserved as hemoglobin and cytochrome c but less conserved than histones and are clearly members of a multigene family. These data support our hypothesis, based upon biochemical and immunological evidence, that suggests considerable structural homology and evolutionary conservation between adrenergic and muscarinic cholinergic receptors. To our knowledge, this is the first report utilizing automated DNA sequence analysis to determine the structure of a gene.
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Affiliation(s)
- J Gocayne
- Section of Receptor Biochemistry and Molecular Biology, National Institute of Neurological and Communicative Disorders and Stroke, Bethesda, MD 20892
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Zhu SP, Wang CD, Cao GF, Wang LY. [Tissue distribution and excretion of 170thulium in rats]. Zhongguo Yao Li Xue Bao 1987; 8:382-4. [PMID: 3445784] [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: 01/05/2023]
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Zhu SP, Zheng SY, Wang CD, Cao GF, Zhao XY. [Retention and excretion of 147promethium and its chromosome aberrations on bone marrow cells]. Zhongguo Yao Li Xue Bao 1986; 7:381-4. [PMID: 2954406] [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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Wang CD. [The use of a plantar island flap for the repair of third degree frostbite of the calcaneal region--report of one case]. Zhonghua Zheng Xing Shao Shang Wai Ke Za Zhi 1986; 2:149. [PMID: 3151819] [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: 01/04/2023]
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Zhu SP, Wang CD, Cao GF, Wang GL. [Penetration of 169Yb-citrate through intact and abraded skins]. Zhongguo Yao Li Xue Bao 1984; 5:288-9. [PMID: 6240909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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46
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Zhu SP, Wang CD, Wang GL, Gao XH. [Retention of 75Se-selenomethionine in rats studied by whole body counting]. Zhongguo Yao Li Xue Bao 1984; 5:214-5. [PMID: 6239517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Wang CD, Ding K, Wu YH, Guo WB, Chen J, Yuan ZZ. [Chemical constituents of the root of Pimpinella thellungiana Wolff]. Yao Xue Xue Bao 1983; 18:522-4. [PMID: 6659955] [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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Wang CD. [EEG power spectrum analysis in children with hyperkinetic syndrome]. Zhonghua Yi Xue Za Zhi 1983; 63:25-8. [PMID: 6406006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Zhu SP, Wang CD, Gao XH, Lao QH. [Metabolism of [14C]permethrin in rats studied by liquid scintillation counting]. Zhongguo Yao Li Xue Bao 1982; 3:197-9. [PMID: 6216730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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50
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Want TL, Wang CD, Yan GH. [The antimicrobial activities of maidimeisu (author's transl)]. Yao Xue Xue Bao 1980; 15:223-7. [PMID: 7457139] [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: 01/25/2023]
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