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Deng YJ, Gui YD, Lin JF, Lin QM, Wang GH, Jiang YR, Zhu Q, Zhang Y, Jiang F. [Influence of sleep fragmentation in infancy and toddler period on emotional and behavioral problem at the age of 6 years: a birth cohort study]. Zhonghua Er Ke Za Zhi 2023; 61:418-424. [PMID: 37096261 DOI: 10.3760/cma.j.cn112140-20230220-00116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/26/2023]
Abstract
Objective: To investigate the influence of sleep fragmentation in infancy and toddler period on emotional and behavioral problems at the age of 6 years. Methods: Using a prospective cohort design, 262 children were extracted from mother-child birth cohort recruited from May 2012 to July 2013 in Renji Hospital, School of Medicine, Shanghai Jiao Tong University. Children's sleep and physical activities were assessed using actigraphy at 6, 12, 18, 24, and 36 months of age, from which the sleep fragmentation index (FI) at each follow-up point was calculated. Children's emotional and behavioral problems at 6 years of age were assessed using the strengths and difficulties questionnaire. Group-based trajectory model was applied to determine sleep FI in infancy and toddler period trajectory groups with Bayesian information criteria being used to determine the best fitting model. Children's emotional and behavioral problems between groups were examined with independent t test and linear regression models, etc. Results: A total of 177 children, with 91 boys and 86 girls, were included in the final analysis and were divided into 2 groups: high FI group (n=30) and low FI group (n=147). Compared with children in the low FI group, those in the high FI group presents with higher total difficulties score and higher hyperactivity or inattention score ((11.0±4.9) vs. (8.9±4.1), (4.9±2.7) vs. (3.7±2.3) scores, t=2.17, 2.23, both P<0.05, respectively), with the differences remaining significant after adjusting for covariates (t=2.08, 2.09, both P<0.05 respectively). Conclusion: High sleep fragmentation in infancy and toddler period is associated with more emotional and behavioral problems, especially hyperactivity or inattention problems, at 6 years of age.
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Affiliation(s)
- Y J Deng
- Department of Neurology, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, National Children's Medical Center, Shanghai 200127, China
| | - Y D Gui
- Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, National Children's Medical Center, Shanghai 200127, China
| | - J F Lin
- Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, National Children's Medical Center, Shanghai 200127, China
| | - Q M Lin
- Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, National Children's Medical Center, Shanghai 200127, China
| | - G H Wang
- Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, National Children's Medical Center, Shanghai 200127, China
| | - Y R Jiang
- Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, National Children's Medical Center, Shanghai 200127, China
| | - Q Zhu
- Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, National Children's Medical Center, Shanghai 200127, China
| | - Y Zhang
- Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200125, China
| | - F Jiang
- Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, National Children's Medical Center, Shanghai 200127, China
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Wang GH, Lin QM, Lin JF, Deng YJ, Jiang YR, Wang HW, Su RX, Qiu XC, Li CB, Jiang F. [Protocol for the development of Chinese guideline for the treatment of bedtime problems and night wakings in children under 6 years of age (2023)]. Zhonghua Er Ke Za Zhi 2023; 61:122-125. [PMID: 36720592 DOI: 10.3760/cma.j.cn112140-20220805-00706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- G H Wang
- Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Q M Lin
- Pediatric Translational Medicine Institution, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - J F Lin
- Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Y J Deng
- Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Y R Jiang
- Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - H W Wang
- Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - R X Su
- Shanghai Mental Health Center, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - X C Qiu
- EBM Literature Research Center of Library, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, China
| | - C B Li
- Shanghai Mental Health Center, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - F Jiang
- Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
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Li CF, Lu XJ, Wang GH, Li L, Li B, Tu S, Li Q, Li JA. [Efficacy and safety of intraoperative ultrasound-assisted neuroendoscopy in the treatment of hypertensive intracerebral hemorrhage via transsylvian approach]. Zhonghua Yi Xue Za Zhi 2021; 101:620-623. [PMID: 33685042 DOI: 10.3760/cma.j.cn112137-20200607-01792] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the efficacy and safety of intraoperative ultrasound-assisted neuroendoscopy for treating hypertensive intracerebral hemorrhage (HICH) via lateral fissure and insula approach. Methods: The clinical data of 66 patients with HICH in basal ganglia who underwent intraoperative ultrasound-assisted neuroendoscopy via lateral fissure and insula approach for hematoma evacuation were retrospectively analyzed, including operative data and follow-up results. All patients had no brain hernia before operation. The hematoma was located by the ultrasound and then the path into the hematoma cavity was determined. Meanwhile, the residual hematoma was also detected by using the ultrasound. The clearance rate of hematoma was observed by CT. Barthel index was used to evaluate the activity of daily living. Results: The amount of residual hematoma was less than 10% in 63 ases and 10%-20% in 3 cases. There were 11 cases of postoperative pneumonia, of whom 9 cases underwent percutaneous tracheotomy. Rebleeding occurred in 2 cases, but the amount was small, and there was no need for reoperation. Meanwhile, there was 1 case of secondary intracranial infection and 1 case of secondary hydrocephalus. No case of cerebral contusion was reported. Half a year after the operation, Barthel Index grading showed that there were 3 cases of grade I, 25 cases of grade Ⅱ, 34 cases of grade Ⅲ, 3 cases of grade Ⅳ and 1 case of death, respectively. Conclusions: Intraoperative ultrasound-assisted neuroendoscopy via lateral fissure and insula approach can improve the efficacy and safety of treatment for HICH.
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Affiliation(s)
- C F Li
- Department of Neurosurgery, Qingdao Municipal Hospital Affiliated to Qingdao University, Qingdao 266071, China
| | - X J Lu
- Department of Neurosurgery, the Affiliated Wuxi No.2 Hospital of Nanjing Medical University, Neuroscience Center of Jiangnan University, Wuxi 214002, China
| | - G H Wang
- Department of Neurosurgery, Qingdao Municipal Hospital Affiliated to Qingdao University, Qingdao 266071, China
| | - L Li
- Department of Neurosurgery, Qingdao Municipal Hospital Affiliated to Qingdao University, Qingdao 266071, China
| | - B Li
- Department of Neurosurgery, the Affiliated Wuxi No.2 Hospital of Nanjing Medical University, Neuroscience Center of Jiangnan University, Wuxi 214002, China
| | - S Tu
- Emergency Department, the Affiliated Wuxi No.2 Hospital of Nanjing Medical University, Wuxi 214002, China
| | - Q Li
- Emergency Department, the Affiliated Wuxi No.2 Hospital of Nanjing Medical University, Wuxi 214002, China
| | - J A Li
- Emergency Department, the Affiliated Wuxi No.2 Hospital of Nanjing Medical University, Wuxi 214002, China
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Shi FY, Zhang L, Qin Q, Jin X, Hu CH, Yu TY, Ma L, Wang GH, Wu H, Xia P, Sun XJ, She JJ. [Short-term efficacy of robotic-assisted total mesorectal excision with and without lateral lymph node dissection for mid-low advanced rectal cancer: a propensity score matching analysis]. Zhonghua Wei Chang Wai Ke Za Zhi 2020; 23:370-376. [PMID: 32306605 DOI: 10.3760/cma.j.cn.441530-20190725-00289] [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 evaluate the feasibility, safety and efficacy of robotic-assisted lateral lymph node dissection for mid-low advanced rectal cancer. Methods: A retrospective cohort study was performed. Inclusion criteria: (1) age between 18 and 80 years old; (2) rectal adenocarcinoma diagnosed by pathology; (3) without distant metastasis by preoperative CT or MRI; (4) patients underwent robotic-assisted total mesorectal resection (TME). Exclusion criteria: (1) conversion to open surgery; (2) multiple primary tumors; (3) patients underwent combined multiple organ resection. According to the above criteria, 137 patients undergoing robotic-assisted mid-low rectal cancer resection in the First Affiliated Hospital of Xi'an Jiaotong University from December 2016 to April 2019 were enrolled. Ninety-seven cases underwent robotic-assisted total mesorectal excision (TME group) and 40 underwent robotic-assisted total mesorectal resection with lateral lymph node dissection (LLND) (TME+LLND group, pelvic LLND was performed with neurovascular guidance to retain pelvic autonomic nerves in the order of the left side the first and then the right side). The propensity score matching of 1:1 was performed with R software, based on age, sex, BMI, ASA classification, distance from tumor to the anal verge, preoperative chemoradiotherapy history, preoperative abdominal surgery history, the size of tumors and TNM stage. The operative indicators, postoperative recovery, pathology and postoperative complications within 30 days were compared between the two groups. Results: A total of 72 cases were successfully matched (36 in each group), and there were no statistically significant differences in baseline data between the two groups (all P>0.05). The operation time of TME+LLND group was significantly longer than that of TME group [275.0 (180-405) minutes vs. 220.0 (140-320) minutes, Z=-3.680, P<0.001], while there were no statistically significant differences in blood loss during operation, time to postoperative first flatus, postoperative hospital stay, total hospital cost, tumor differentiation, and distal resection length of margin (all P>0.05). Circumferential resection margin was all negative in both groups. The number of harvested lymph modes in the TME+LLND groups was higher than that in the TME group [26 (18-37) vs. 14 (9-36), Z=-6.407, P<0.001]. In addition, there were no statistically significant differences in postoperative morbidity and Clavien-Dindo classification of complication within 30 days between the two groups (both P>0.05). Conclusions: Although robotic lateral lymph node dissection requires longer operation time, it is a feasible, safe and effective procedure.
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Affiliation(s)
- F Y Shi
- Department of General Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - L Zhang
- Department of General Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Q Qin
- Department of General Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - X Jin
- Department of General Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - C H Hu
- Department of General Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - T Y Yu
- Department of General Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - L Ma
- Department of Anaesthesiasurgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - G H Wang
- Department of General Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - H Wu
- Department of General Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - P Xia
- Department of Oncological Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - X J Sun
- Department of General Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - J J She
- Department of General Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
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Chen YZ, Xu GB, Guan SN, Jia SQ, Kang XZ, Zhao J, Wang GH, Ji JF. [Several hot issues in the detection of plasma EGFR mutations in advanced non-small-cell lung cancer patients]. Zhonghua Yi Xue Za Zhi 2019; 99:3364-3371. [PMID: 31752461 DOI: 10.3760/cma.j.issn.0376-2491.2019.43.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Y Z Chen
- Department of Clinical Laboratory, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - G B Xu
- Department of Clinical Laboratory, Peking University Cancer Hospital & Institute, Beijing 100142, China;Molecular diagnosis center, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - S N Guan
- Department of Clinical Laboratory, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - S Q Jia
- Molecular diagnosis center, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - X Z Kang
- Department of Thoracic Surgery, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - J Zhao
- Department of Thoracic Oncology, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - G H Wang
- Department of Clinical Laboratory, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - J F Ji
- Molecular diagnosis center, Peking University Cancer Hospital & Institute, Beijing 100142, China;Department of Gastrointestinal Cancer Center, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing 100142, China
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Lu MX, Wang GH, Xu Q, Qian C. [One case of severe medicamentosa-like dermastitis with liver, kidney and digestive fract damage by exposure to trichioroethylene]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2019; 37:231-233. [PMID: 31189252 DOI: 10.3760/cma.j.issn.1001-9391.2019.03.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Zhang P, Lan TH, Zhou YM, Deng JP, Wei CZ, Wang GH, Tian L. [Risk factor analysis of perioperative complications in patients with radical gastrectomy for gastric cancer]. Zhonghua Wei Chang Wai Ke Za Zhi 2019; 22:736-741. [PMID: 31422611 DOI: 10.3760/cma.j.issn.1671-0274.2019.08.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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 identify the risk factors of perioperative complications after radical gastrectomy for gastric cancer. Methods: A retrospective case-control study was performed. Case inclusion criteria: (1) patients undergoing radical gastrectomy (D2); (2) primary gastric cancer without distant organ metastasis confirmed by postoperative pathology; (3) no neoadjuvant chemotherapy before surgery. Patients with peritoneal tumor dissemination found during operation, undergoing palliative operation due to distant metastasis, and undergoing combined organ resection and those without complete clinicopathological data were excluded. According to the above criteria, 426 patients with gastric cancer at our department from January 2015 to June 2017 were included in this study. Of 426 patients, 285 were male and 141 were female with a mean age of (55.4±9.7) years. According to the "Japan Clinical Cancer Research Group (JCOG) classification criteria for postoperative complications of gastric cancer", patients with grade II and higher complications were classified as complication group, and patients with no complication or grade I complication were classified as non-complication group. Baseline data were compared between two groups. Associations of perioperative complication with gender, age, body mass index, preoperative routine laboratory test, American Society of Anesthesiologists (ASA) classification, activities of daily living (ADL) assessment, past medical history as well as preoperative conditions (hypertension and/or diabetes), surgical resection procedure, incision type, operation time, intraoperative blood loss/body mass ratio were examined. Univariate analysis was performed using χ(2) test and the Wilcoxon rank sum test to screen the statistically significant variables associated with perioperative complications. The significant variables were included in multivariate logistic regression analysis to identify risk factors of perioperative complication. Results: Grade II or higher complications after surgery were developed in 97 patients (22.8%), which included anastomotic leakage in 18 cases (4.2%), postoperative bleeding in 9 cases (2.1%), abdominal abscess in 5 cases (1.2%), intestinal obstruction in 5 cases (1.2%), pancreatic leakage in 1 case (0.2%), and other adverse events in 59 cases (13.8%). Univariate analysis suggested that the gender, age, ADL, incision type, intraoperative blood loss/body mass ratio, and operation time were associated with perioperative complication (all P<0.05). Multivariate analysis revealed that elder age (OR=1.033, 95% CI:1.013-1.053, P=0.013), incision type of laparotomy (OR=2.091, 95% CI:1.247-3.508, P=0.004), longer operation time (OR=1.004, 95% CI:1.001-1.007, P=0.001) and higher ratio of intraoperative blood loss/body mass (OR=1.100, 95% CI: 1.039-1.163, P=0.031) were risk factors for postoperative complications. Conclusion: Attention should be paid to those cases with elder age, laparotomy incision, longer operation time and higher ratio of intraoperative blood loss/body mass, and perioperative management after gastrectomy should be improved.
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Affiliation(s)
- P Zhang
- Department of Gastrointestinal Gland Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
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Wang GH, Jiang F. [Sleep health and common sleep disturbances in adolescents]. Zhonghua Er Ke Za Zhi 2019; 57:733-736. [PMID: 31530366 DOI: 10.3760/cma.j.issn.0578-1310.2019.09.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
- G H Wang
- Department of Developmental and Behavioral Pediatrics, Pediatric Translational Medicine Institute, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
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Diao TX, Han QH, Shan HJ, Wu XQ, Lin YJ, Li Q, Wang GH, Jing YY, Ma X, Shen M, Yu LS, Han L, Wang YX. [Study on the relationship between age-related hearing loss and cognitive impairment]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019; 54:110-115. [PMID: 30776862 DOI: 10.3760/cma.j.issn.1673-0860.2019.02.003] [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 correlation between age-related hearing loss and cognitive impairment. Methods: 201 elderly patients, who were admitted to the Department of Otorhinolaryngology of Peking University People's Hospital from March 1, 2017 to March 31, 2017, were evaluated with hearing screening and the Montreal Cognitive Assessment Scale. Among them, 101 were female and 100 were male, aged 60-90 years old. Taking the cognitive level as the dependent variable, and taking the age, sex, education, occupation, marital status, residence, and average hearing loss (average hearing threshold of 500, 1 000, 2 000, and 4 000 Hz), as well as the length of conscious hearing loss as the independent variables, the single factor analysis and multivariate linear regression analysis were used to screen the main factors affecting the cognitive level of the elderly. Results: Of the 201 elderly patients, 39 had normal hearing, 65 had mild hearing loss, 80 had moderate hearing loss, 16 had severe hearing loss, and 1 had profound hearing loss. The average degree of hearing loss was the influencing factor of cognitive impairment, and it mainly affected the directional force and abstract ability in the cognitive domains (P<0.05); The age, self-reported hearing loss, years of education, marital status, past ear diseases, and hypertension were relatively independent factors that affected the cognitive level(P<0.05). Conclusions: Age-related hearing loss is the risk factor for the cognitive impairment, especially for abstraction and orientation, in the elderly. The self-reported hearing loss is an independent risk factor for cognitive impairment.
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Affiliation(s)
- T X Diao
- Department of Otorhinolaryngology, Peking University People's Hospital, Beijing 100044, China
| | - Q H Han
- Department of Otorhinolaryngology, Qinhuangdao Workers' Hospital, Qinhuangdao 066200, China
| | - H J Shan
- Department of Otorhinolaryngology, Peking University International Hospital, Beijing 102206, China
| | - X Q Wu
- Department of Otorhinolaryngology, Peking University International Hospital, Beijing 102206, China
| | - Y J Lin
- Department of Otorhinolaryngology, Peking University International Hospital, Beijing 102206, China
| | - Q Li
- Department of Otorhinolaryngology, Peking University People's Hospital, Beijing 100044, China
| | - G H Wang
- Department of Otorhinolaryngology, Peking University People's Hospital, Beijing 100044, China
| | - Y Y Jing
- Department of Otorhinolaryngology, Peking University People's Hospital, Beijing 100044, China
| | - X Ma
- Department of Otorhinolaryngology, Peking University People's Hospital, Beijing 100044, China
| | - M Shen
- Department of Neurology, Peking University People's Hospital, Beijing 100044, China
| | - L S Yu
- Department of Otorhinolaryngology, Peking University People's Hospital, Beijing 100044, China
| | - L Han
- Department of Otorhinolaryngology, Peking University People's Hospital, Beijing 100044, China
| | - Y X Wang
- Department of Otorhinolaryngology, Peking University People's Hospital, Beijing 100044, China
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Li H, Wang GH, Wang BY, Xu W. [A case with neonatal Joubert syndrome]. Zhonghua Er Ke Za Zhi 2019; 57:63-64. [PMID: 30630235 DOI: 10.3760/cma.j.issn.0578-1310.2019.01.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Affiliation(s)
- H Li
- Department of Neonatology, First Hospital of Jilin University, Changchun 130021, China
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Li PP, Zhao YB, Li HJ, Che JM, Zhang ZH, Li ZC, Zhang YY, Wang LC, Liang M, Yi XY, Wang GH. Very high external quantum efficiency and wall-plug efficiency 527 nm InGaN green LEDs by MOCVD. Opt Express 2018; 26:33108-33115. [PMID: 30645467 DOI: 10.1364/oe.26.033108] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 11/08/2018] [Indexed: 06/09/2023]
Abstract
We demonstrate very high luminous efficacy InGaN-based green light-emitting diodes (LEDs) grown on c-plane patterned sapphire substrates (PSS) using metal organic chemical vapor deposition (MOCVD). The 527 nm green LEDs show a peak external quantum efficiency (EQE) of 53.3%, a peak wall-plug efficiency (WPE) of 54.1% and a peak luminous efficacy of 329 lm/W, respectively. A high EQE of 38.4%, a WPE of 32.1% and a very low forward voltage of 2.86 V were obtained at a typical working current density of 20 A/cm2. By operating low cost green LEDs at a low current density, our devices (0.5 mm2) demonstrating an EQE and a WPE higher than 50% and an efficacy of 259 lm/W at 4 A/cm2 with an output power of 24 mW. High crystal quality of the InGaN/GaN MQWs was characterized by X-ray diffraction (XRD) and the advantage of the epitaxy design was investigated by APSYS software simulation. These results provide a simple way to achieve very high efficiency InGaN green LEDs.
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Fan B, Ge GX, Wang GH, Wan JG. Segregation Effect and Its Influence on the Stability and Electronic Properties of Icosahedral CuxAg13−x (x = 0–13) Clusters. J CLUST SCI 2018. [DOI: 10.1007/s10876-018-1459-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Zhang ZL, Liu WM, Zhang Y, Wang GH, Yan C, Su YY, Huang QB. [Clinical efficacy of acute intraoperative encephalocele prevention strategy for severe traumatic brain injury]. Zhonghua Yi Xue Za Zhi 2017; 97:2435-2438. [PMID: 28835044 DOI: 10.3760/cma.j.issn.0376-2491.2017.31.010] [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] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the clinical efficacy of prevention strategy for acute intraoperative encephalocele of patients with severe traumatic brain injury (sTBI). Methods: A total of 173 patients with sTBI, who treated in Emergency Neurosurgery Department of Shandong University Qilu Hospital from January, 2011 to September, 2015 were collected and divided into research group and control group, according to their therapeutic strategy.The clinical data during hospitalization and prognosis 1 year after injury was analyzed retrospectively to clarify the effect of acute encephalocele prevention strategy. Results: There were no statistically significant differences in sex, age, preoperative Glasgow coma scale score and imaging type of lesion between patients from the two groups.The highest intraoperative intracranial pressure in the research group and control group were (35.71±4.13) mmHg and(34.85±3.81) mmHg, respectively.The acute encephalocele incidence of the research group (7 cases, 6.5%) was significantly lower than that of the control group (13 cases, 19.7%) (P<0.01). Subgroup analysis showed that the incidence of acute encephalocele in patients with only unilateral lesions was low (1.3%), while higher (19.4%) in patients with both unilateral lesions and other secondary lesions or diffuse brain swelling.The prognosis of the patients was evaluated by Glasgow Outcome Scale according to the follow-up 1 year after injury, and it was suggested that the percentage of patients with good outcome in the research group (62 cases, 57.9%) was remarkably higher than that in the control group (26 cases, 39.4%) (P=0.018). Conclusions: For sTBI patients with high risk of acute encephalocele, prevention strategy was found to be able to retard the progression of delayed hematoma and diffuse brain swelling, prevent the acute encephalocele during operation, and then significantly improve the prognosis.
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Affiliation(s)
- Z L Zhang
- Department of Emergency Neurosurgery, Qilu Hospital of Shandong University and Brain Science Research Institute of Shandong University, Jinan 250012, China
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Wang LC, Zhang YY, Chen R, Liu ZQ, Ma J, Li Z, Yi XY, Li HJ, Wang JX, Wang GH, Zhu WH, Li JM. Optically pumped lasing with a Q-factor exceeding 6000 from wet-etched GaN micro-pyramids. Opt Lett 2017; 42:2976-2979. [PMID: 28957223 DOI: 10.1364/ol.42.002976] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 06/29/2017] [Indexed: 06/07/2023]
Abstract
We report the observation of room-temperature optically pumped lasing modes from a single GaN pyramid microcavity on a metallic mirror. The mode at 367.2 nm exhibits a low threshold (0.4-0.5 MW/cm2) and a narrow linewidth (0.054 nm), by which the quality factor can be estimated to be >6000. These lasing behaviors can be attributed to the specific wet-etching approach by selectively etching away defects and pyramid geometry with bottom Ag reflectors for better light confinement. Optical resonances in these pyramids are further investigated in combination with three-dimensional finite-difference time-domain simulations.
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Yang F, Lin QM, Wang GH, Jiang YR, Song YJ, Dong SM, Sun WQ, Deng YJ, Wang Y, Xu XJ, Zhu Q, Jiang F. [Investigation of dose-dependent association between bedtime routines and sleep outcomes in infants and toddlers]. Zhonghua Er Ke Za Zhi 2017; 55:439-444. [PMID: 28592012 DOI: 10.3760/cma.j.issn.0578-1310.2017.06.009] [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 current bedtime routine among Chinese children less than 3 years of age and explore its dose-dependent association with sleep duration and sleep quality. Method: Healthy full-term born children aged 0-35 months were selected by stratified cluster random sampling method from 8 provinces in China following the "Hospital of Province-City-County" sampling technical route during 2012-2013.Brief Infant Sleep Questionnaire(BISQ) was used to assess sleep conditions of these children.Children's personal and family information was obtained by Shanghai Children's Medical Center Socio-demographic Questionnaire.Both of these questionnaires were filled in by parents. The effects of bedtime routine on children's sleep duration and quality were analyzed by multivariate analysis of variance. Result: The children's average age was(12±10) months(n=1 304), of whom 689 were males (52.8%, 689/1 304). There were 48.5%(632/1 304)of the parents reported that their children had not established regular sleep routines. There was a consistent dose-dependent association between bedtime routine and sleep duration, as well as other indicators for sleep quality (all P<0.05). The more regular the sleep routines, the longer the sleep duration, the earlier the children went to sleep, the shorter the sleep onset latency, the fewer the nighttime wakeup and the shorter the nighttime waking.The nighttime sleep duration was significantly longer for those with a bedtime routine 'every night' than those who 'never' had a bedtime routine (9.5(95%CI: 9.4-9.6)vs. 8.9(95%CI: 8.6-9.3)h, t=3.345, P=0.001). Compared with children who never had bedtime routines, children with regular bedtime routines had fewer night wakeup (1.3(95%CI: 1.2-1.4) vs. 2.4( 95%CI: 2.0-2.9), t=3.182, P=0.001) and shorter night waking duration(16.6(95%CI: 14.6-18.8) vs. 59.2 (95%CI: 47.0-72.7)min, t=6.383, P<0.01). Conclusion: The percentage of children who have established regular bedtime routine is low in China. There is significant dose-dependent association between regular bedtime routine and sleep outcomes, especially sleep quality. The more regular the sleep routines, the better the sleep quality.
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Affiliation(s)
- F Yang
- Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center Affiliated to Shanghai Jiao Tong University School of Medicine, Ministry of Education Shanghai Key Laboratory of Children's Environmental Health, Shanghai 200127, China
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16
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Pan DF, Zhou MX, Lu ZX, Zhang H, Liu JM, Wang GH, Wan JG. Local Magnetoelectric Effect in La-Doped BiFeO3 Multiferroic Thin Films Revealed by Magnetic-Field-Assisted Scanning Probe Microscopy. Nanoscale Res Lett 2016; 11:318. [PMID: 27356565 PMCID: PMC4927550 DOI: 10.1186/s11671-016-1534-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 06/24/2016] [Indexed: 06/06/2023]
Abstract
Multiferroic La-doped BiFeO3 thin films have been prepared by a sol-gel plus spin-coating process, and the local magnetoelectric coupling effect has been investigated by the magnetic-field-assisted scanning probe microscopy connected with a ferroelectric analyzer. The local ferroelectric polarization response to external magnetic fields is observed and a so-called optimized magnetic field of ~40 Oe is obtained, at which the ferroelectric polarization reaches the maximum. Moreover, we carry out the magnetic-field-dependent surface conductivity measurements and illustrate the origin of local magnetoresistance in the La-doped BiFeO3 thin films, which is closely related to the local ferroelectric polarization response to external magnetic fields. This work not only provides a useful technique to characterize the local magnetoelectric coupling for a wide range of multiferroic materials but also is significant for deeply understanding the local multiferroic behaviors in the BiFeO3-based systems.
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Affiliation(s)
- Dan-Feng Pan
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, China
| | - Ming-Xiu Zhou
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, China
| | - Zeng-Xing Lu
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, China
| | - Hao Zhang
- Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky, 40506-0055, USA
| | - Jun-Ming Liu
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Guang-Hou Wang
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Jian-Guo Wan
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, China.
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China.
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17
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Chen SH, Lv QL, Hu L, Peng MJ, Wang GH, Sun B. DNA methylation alterations in the pathogenesis of lupus. Clin Exp Immunol 2016; 187:185-192. [PMID: 27690369 DOI: 10.1111/cei.12877] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/27/2016] [Indexed: 01/02/2023] Open
Abstract
Although lupus is, by definition, associated with genetic and immunological factors, its molecular mechanisms remain unclear. The up-to-date research findings point out that various genetic and epigenetic factors, especially gene-specific and site-specific methylation, are believed to contribute to the initiation and development of systemic lupus erythematosus (SLE). This review presents and summarizes the association between abnormal DNA methylation of immune-related cells and lupus-like diseases, as well as the possible mechanisms of immune disorder caused by DNA methylation, aiming at a better understanding of the roles of aberrant DNA methylation in the initiation and development of certain forms of lupus and providing a new insight into promising therapeutic regimens in lupus-like diseases.
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Affiliation(s)
- S H Chen
- Department of Oncology, Changsha Central Hospital, Changsha, China
| | - Q L Lv
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China
| | - L Hu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China
| | - M J Peng
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China
| | - G H Wang
- Department of Oncology, Changsha Central Hospital, Changsha, China
| | - B Sun
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China
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18
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Pan DF, Bi GF, Chen GY, Zhang H, Liu JM, Wang GH, Wan JG. Polarization-dependent interfacial coupling modulation of ferroelectric photovoltaic effect in PZT-ZnO heterostructures. Sci Rep 2016; 6:22948. [PMID: 26954833 PMCID: PMC4782167 DOI: 10.1038/srep22948] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 02/24/2016] [Indexed: 11/09/2022] Open
Abstract
Recently, ferroelectric perovskite oxides have drawn much attention due to potential applications in the field of solar energy conversion. However, the power conversion efficiency of ferroelectric photovoltaic effect currently reported is far below the expectable value. One of the crucial problems lies in the two back-to-back Schottky barriers, which are formed at the ferroelectric-electrode interfaces and blocking most of photo-generated carriers to reach the outside circuit. Herein, we develop a new approach to enhance the ferroelectric photovoltaic effect by introducing the polarization-dependent interfacial coupling effect. Through inserting a semiconductor ZnO layer with spontaneous polarization into the ferroelectric ITO/PZT/Au film, a p-n junction with strong polarization-dependent interfacial coupling effect is formed. The power conversion efficiency of the heterostructure is improved by nearly two orders of magnitude and the polarization modulation ratio is increased about four times. It is demonstrated that the polarization-dependent interfacial coupling effect can give rise to a great change in band structure of the heterostructure, not only producing an aligned internal electric field but also tuning both depletion layer width and potential barrier height at PZT-ZnO interface. This work provides an efficient way in developing highly efficient ferroelectric-based solar cells and novel optoelectronic memory devices.
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Affiliation(s)
- Dan-Feng Pan
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China
| | - Gui-Feng Bi
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China
| | - Guang-Yi Chen
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China
| | - Hao Zhang
- Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506-0055, USA
| | - Jun-Ming Liu
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China.,Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Guang-Hou Wang
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China.,Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Jian-Guo Wan
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China.,Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
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19
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Ge GX, Li YB, Wang GH, Wan JG. Electric field control of the magnetic anisotropy energy of double-vacancy graphene decorated by iridium atoms. Phys Chem Chem Phys 2016; 18:11550-5. [DOI: 10.1039/c6cp01009a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The system of Ir@DV possesses large MAE and the amplitude of MAE can be easily manipulated by electric fields.
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Affiliation(s)
- Gui-Xian Ge
- National Laboratory of Solid State Microstructures
- Collaborative Innovation Center of Advanced Microstructures
- and Department of Physics
- Nanjing University
- Nanjing 210093
| | - Ying-Bin Li
- National Laboratory of Solid State Microstructures
- Collaborative Innovation Center of Advanced Microstructures
- and Department of Physics
- Nanjing University
- Nanjing 210093
| | - Guang-Hou Wang
- National Laboratory of Solid State Microstructures
- Collaborative Innovation Center of Advanced Microstructures
- and Department of Physics
- Nanjing University
- Nanjing 210093
| | - Jian-Guo Wan
- National Laboratory of Solid State Microstructures
- Collaborative Innovation Center of Advanced Microstructures
- and Department of Physics
- Nanjing University
- Nanjing 210093
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20
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Yu XH, Zhang Q, Yang XP, Yang W, Dai F, Qian Z, Wang ZL, Wu CF, Zhao HZ, Wang GH. Expression of macrophage migration-inhibitory factor in duodenal ulcer and its relation to Helicobacter pylori infection. Genet Mol Res 2015; 14:13860-7. [PMID: 26535701 DOI: 10.4238/2015.october.29.6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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 aim of this study was to examine the expression of macrophage migration-inhibitory factor (MIF) in duodenal ulcer epithelial cells and its relation to Helicobacter pylori (Hp) infection, and to discuss the pathogenic roles of MIF expression and Hp infection in duodenal ulcer. MIF protein and mRNA expression was examined in samples from patients with duodenal ulcer with and without Hp infection (N = 40 each, experimental group), and in normal duodenal bulb mucosal tissue (N = 40, control group) using immunohistochemistry and in situ hybridization. Patients without Hp infection received routine treatment, and treatment was provided to the patients positive for Hp to eradicate Hp infection. Hp and MIF expression levels before treatment and after the ulcer had been cured were compared. The positive rates of MIF protein and mRNA in patients with Hp infection before treatment were 67.5 and 65%, respectively, and were 18.9 and 21.6% in the 37 patients from whom Hp was eliminated. These were statistically different both before and after treatment compared with controls (P < 0.05). In the patients without Hp infection, the positive rates of MIF protein and mRNA expression before (45 and 47.5%, respectively) and after (32.5 and 30%) treatment were not significantly different (P > 0.05). The results of this study suggested that MIF is related to the development of duodenal ulcer, and that the presence of Hp is closely related with the expression of MIF in the duodenal mucosa and the development of duodenal ulcer.
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Affiliation(s)
- X H Yu
- Department of Gastroenterology, General Hospital of Lanzhou Military Command, Lanzhou, Gansu Province, China
| | - Q Zhang
- Department of Gastroenterology, General Hospital of Lanzhou Military Command, Lanzhou, Gansu Province, China
| | - X P Yang
- Department of Gastroenterology, General Hospital of Lanzhou Military Command, Lanzhou, Gansu Province, China
| | - W Yang
- Department of Gastroenterology, General Hospital of Lanzhou Military Command, Lanzhou, Gansu Province, China
| | - F Dai
- Department of Gastroenterology, General Hospital of Lanzhou Military Command, Lanzhou, Gansu Province, China
| | - Z Qian
- Department of Gastroenterology, General Hospital of Lanzhou Military Command, Lanzhou, Gansu Province, China
| | - Z L Wang
- Department of Gastroenterology, General Hospital of Lanzhou Military Command, Lanzhou, Gansu Province, China
| | - C F Wu
- Department of Gastroenterology, General Hospital of Lanzhou Military Command, Lanzhou, Gansu Province, China
| | - H Z Zhao
- Department of Gastroenterology, General Hospital of Lanzhou Military Command, Lanzhou, Gansu Province, China
| | - G H Wang
- Department of Gastroenterology, General Hospital of Lanzhou Military Command, Lanzhou, Gansu Province, China
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22
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Ge GX, Sun HB, Han Y, Song FQ, Zhao JJ, Wang GH, Wan JG. Erratum: CORRIGENDUM: Reversible switching of magnetic states by electric fields in nitrogenized-divacancies graphene decorated by tungsten atoms. Sci Rep 2015; 5:9545. [PMID: 26010723 PMCID: PMC4443776 DOI: 10.1038/srep09545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
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23
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Wei D, Huang ZH, Zhang RH, Wang CL, Xu MJ, Liu BJ, Wang GH, Xu T. Roles of p38 MAPK in the regulation of the inflammatory response to swine influenza virus-induced acute lung injury in mice. Acta Virol 2015; 58:374-9. [PMID: 25518721 DOI: 10.4149/av_2014_04_374] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Swine influenza virus (SIV), one of the most important zoonotic agents, is associated with major public health concerns. The current study was conducted to investigate the role of p38 mitogen-activated protein kinase (p38 MAPK) in the regulation of the inflammatory response to acute lung injury (ALI) induced by SIV of H9N2 subtype (H9N2-SIV) in mice. For this purpose, BALB/c mice were intranasally infected with 20 LD(50) of H9N2-SIV (infected group), while non-infected mice served as control (control group). To assess the effect of p38 MAPK, its specific inhibitor SB203580 was employed followed by SIV infection (SB group). At various times after infection, mouse lungs were subjected to pathological and histological observations and detection of inflammatory cytokines tumor necrosis factor α (TNF)-α, interleukin (IL)-1β, IL-6, and IL-10 and phosphorylated p38 MAPK. The obtained results showed obvious inflammatory responses, injury and raised levels of inflammatory cytokines and phosphorylated p38 MAPK in the lungs of virus-infected mice. In the mice inoculated with the virus alone, the level of phosphorylated p38 MAPK increased from day 2 and peaked at day 6 post infection (p.i.). However, SB203580 caused lower increases in inflammatory cytokines and phosphorylated p38 MAPK and a milder lung injury. These findings indicate that the activation of p38 MAPK upregulated the inflammatory responses to H9N2-SIV-induced ALI, increased its severity and promoted the production of inflammatory cytokines.
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Han YM, Bandowe BAM, Wei C, Cao JJ, Wilcke W, Wang GH, Ni HY, Jin ZD, An ZS, Yan BZ. Stronger association of polycyclic aromatic hydrocarbons with soot than with char in soils and sediments. Chemosphere 2015; 119:1335-1345. [PMID: 24656973 PMCID: PMC4756480 DOI: 10.1016/j.chemosphere.2014.02.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 01/24/2014] [Accepted: 02/04/2014] [Indexed: 05/19/2023]
Abstract
The knowledge of the association of polycyclic aromatic hydrocarbons (PAHs) with organic matter and carbonaceous materials is critical for a better understanding of their environmental transport, fate, and toxicological effects. Extensive studies have been done with regard to the relationship of PAHs with total organic carbon (TOC) and elemental carbon (EC) in different environmental matrices. The relationship between PAHs and the two subtypes of EC, char (combustion residues) and soot (produced via gas-to-particle conversion) also has been tested in field and laboratory experiments using reference materials. However, a direct comparison of associations of PAHs between with char and with soot in real environmental matrices has to our knowledge not yet been reported because of a lack of methodology to differentiate them. In this study, char and soot were measured using the IMPROVE method to test their associations with 12 EPA priority PAHs measured in topsoil samples (N=22, top 10 cm) collected from the Guanzhong Plain and in surface sediment samples (N=32, top 5 cm) from the Wei River (central China). In both soils and sediments, ∑12PAHs were more strongly associated with soot than with char, mainly due to the fact that soot and PAHs were produced in the same gas phase during combustion, had a strong affinity for each other, and were transported and deposited together, while char, the combustion residue, was transported differently to PAHs due to its large particle size. Stronger correlations between PAHs and the different carbon fractions (TOC, soot, and char) in sediments than in soils were observed, which is associated with the redistribution of PAHs among the organic matter pools in water because of the processes during soil erosion and sedimentation in the river.
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Affiliation(s)
- Y M Han
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China.
| | - B A M Bandowe
- Geographic Institute, University of Berne, Hallerstrasse 12, 3012 Berne, Switzerland
| | - C Wei
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China; Geographic Institute, University of Berne, Hallerstrasse 12, 3012 Berne, Switzerland; University of Chinese Academy of Sciences, Beijing 100049, China
| | - J J Cao
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
| | - W Wilcke
- Geographic Institute, University of Berne, Hallerstrasse 12, 3012 Berne, Switzerland
| | - G H Wang
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
| | - H Y Ni
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
| | - Z D Jin
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
| | - Z S An
- Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
| | - B Z Yan
- Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA
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Chen ZY, Gao C, Ye T, Zuo XZ, Wang GH, Xu XS, Yao Y. Association between nutritional risk and routine clinical laboratory measurements and adverse outcomes: a prospective study in hospitalized patients of Wuhan Tongji Hospital. Eur J Clin Nutr 2014; 69:552-7. [PMID: 25369828 PMCID: PMC4424800 DOI: 10.1038/ejcn.2014.239] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2014] [Revised: 07/22/2014] [Accepted: 09/27/2014] [Indexed: 01/10/2023]
Abstract
Background/Objectives: Nutritional risk screening (NRS-2002) and routine clinical laboratory measurements (RCLMs) had been shown to have a predictive value in adverse outcomes in some studies, respectively. This study analyzed the association between NRS-2002 and RCLMs and estimated their prospective value in predicting adverse outcomes. Subjects/Methods: A total of 916 hospitalized patients were screened on admission with NRS-2002 and Subjective Global Assessment; RCLMs, which include blood test, kidney and liver function and electrolytes, were recorded. Diagnosis, nutritional support, surgery, radiotherapy, chemotherapy, complications, mortality and hospital stay during hospitalization were collected. The X2-test, odds ratios with 95% confidence intervals, kappa (k) statistic and regression analyses were conducted. Results: An overall 48.1% of the 916 patients were at nutritional risk on admission. Comparing ‘at risk' with ‘no risk', a significantly higher incidence of abnormality was found not only in nutritional markers but also in other parameters of RCLMs (OR ranged from 1.5 to 3.5). Regression analyses showed that ‘at risk' determined at admission was not a significant predictor of adverse outcomes after adjusting for other confounding factors, although it was a strong predictor in univariate analysis, whereas hypoalbuminemia, low total lymphocyte count, abnormality of hepatic and renal function were predictors after adjusting for confounders. Conclusions: The findings suggest that NRS-2002 might be a global index of ‘sickness' rather than be only a nutritional screening tool. It being rated once at admission is insufficient and should be repeated for using it as a predictor, whereas RCLMs routinely measured at admission may be able to be used to predict adverse outcomes.
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Affiliation(s)
- Z Y Chen
- Department of Clinical Nutrition, Tongji Hospital, Tongji Medical College, Huazhong University Science and Technology, Wuhan, China
| | - C Gao
- Department of Gastrointestinal Surgery, Tongji Hospital, Tongji Medical College, Huazhong University Science and Technology, Wuhan, China
| | - T Ye
- Department of Clinical Nutrition, Tongji Hospital, Tongji Medical College, Huazhong University Science and Technology, Wuhan, China
| | - X Z Zuo
- Department of Clinical Nutrition, Tongji Hospital, Tongji Medical College, Huazhong University Science and Technology, Wuhan, China
| | - G H Wang
- Department of Gastrointestinal Surgery, Tongji Hospital, Tongji Medical College, Huazhong University Science and Technology, Wuhan, China
| | - X S Xu
- Department of Gastrointestinal Surgery, Tongji Hospital, Tongji Medical College, Huazhong University Science and Technology, Wuhan, China
| | - Y Yao
- Department of Clinical Nutrition, Tongji Hospital, Tongji Medical College, Huazhong University Science and Technology, Wuhan, China
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Yang C, Guo X, Wang GH, Wang HL, Liu ZC, Liu H, Zhu ZX, Li Y. Changes in tau phosphorylation levels in the hippocampus and frontal cortex following chronic stress. ACTA ACUST UNITED AC 2014; 47:237-44. [PMID: 24652321 PMCID: PMC3982945 DOI: 10.1590/1414-431x20133275] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Accepted: 10/08/2013] [Indexed: 11/21/2022]
Abstract
Studies have indicated that early-life or early-onset depression is associated with a 2- to 4-fold increased risk of developing Alzheimer's disease (AD). In AD, aggregation of an abnormally phosphorylated form of the tau protein may be a key pathological event. Tau is known to play a major role in promoting microtubule assembly and stabilization, and in maintaining the normal morphology of neurons. Several studies have reported that stress may induce tau phosphorylation. The main aim of the present study was to investigate possible alterations in the tau protein in the hippocampus and frontal cortex of 32 male Sprague-Dawley rats exposed to chronic unpredictable mild stress (CUMS) and then re-exposed to CUMS to mimic depression and the recurrence of depression, respectively, in humans. We evaluated the effects of CUMS, fluoxetine, and CUMS re-exposure on tau and phospho-tau. Our results showed that a single exposure to CUMS caused a significant reduction in sucrose preference, indicating a state of anhedonia. The change in behavior was accompanied by specific alterations in phospho-tau protein levels, but fluoxetine treatment reversed the CUMS-induced impairments. Moreover, changes in sucrose preference and phospho-tau were more pronounced in rats re-exposed to CUMS than in those subjected to a single exposure. Our results suggest that changes in tau phosphorylation may contribute to the link between depression and AD.
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Affiliation(s)
- C Yang
- Department of Psychiatry, Renmin Hospital, Wuhan University, Wuhan, China
| | - X Guo
- Department of Psychiatry, Renmin Hospital, Wuhan University, Wuhan, China
| | - G H Wang
- Department of Psychiatry, Renmin Hospital, Wuhan University, Wuhan, China
| | - H L Wang
- Department of Psychiatry, Renmin Hospital, Wuhan University, Wuhan, China
| | - Z C Liu
- Department of Psychiatry, Renmin Hospital, Wuhan University, Wuhan, China
| | - H Liu
- Department of Psychiatry, Renmin Hospital, Wuhan University, Wuhan, China
| | - Z X Zhu
- Department of Psychiatry, Renmin Hospital, Wuhan University, Wuhan, China
| | - Y Li
- Department of Psychiatry, Renmin Hospital, Wuhan University, Wuhan, China
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Ge GX, Han Y, Wan JG, Zhao JJ, Wang GH. First-principles prediction of magnetic superatoms in 4d-transition-metal-doped magnesium clusters. J Chem Phys 2013; 139:174309. [DOI: 10.1063/1.4827515] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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Liang XQ, Chen YX, Nie ZY, Ye YS, Liu J, Tian GM, Wang GH, Tuong TP. Mitigation of nutrient losses via surface runoff from rice cropping systems with alternate wetting and drying irrigation and site-specific nutrient management practices. Environ Sci Pollut Res Int 2013; 20:6980-6991. [PMID: 23288670 DOI: 10.1007/s11356-012-1391-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Accepted: 11/30/2012] [Indexed: 06/01/2023]
Abstract
Resource-conserving irrigation and fertilizer management practices have been developed for rice systems which may help address water quality concerns by reducing N and P losses via surface runoff. Field experiments under three treatments, i.e., farmers' conventional practice (FCP), alternate wetting and drying (AWD), and AWD integrated with site-specific nutrient management (AWD + SSNM) were carried out during two rice seasons at two sites in the southwest Yangtze River delta region. Across site years, results indicated that under AWD irrigation (i.e., AWD and AWD + SSNM), water inputs were reduced by 13.4~27.5 % and surface runoff was reduced by 30.2~36.7 % compared to FCP. When AWD was implemented alone, total N and P loss masses via surface runoff were reduced by 23.3~30.4 % and 26.9~31.7 %, respectively, compared to FCP. However, nutrient concentrations of surface runoff did not decrease under AWD alone. Under AWD + SSNM, total N and P loss masses via surface runoff were reduced to a greater extent than AWD alone (39.4~47.6 % and 46.1~48.3 % compared to FCP, respectively), while fertilizer inputs and N surpluses significantly decreased and rice grain yields increased relative to FCP. Therefore, by more closely matching nutrient supply with crop demand and reducing both surface runoff and nutrient concentrations of surface runoff, our results demonstrate that integration of AWD and SSNM practices can mitigate N and P losses via surface runoff from rice fields while maintaining high yields.
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Affiliation(s)
- X Q Liang
- Institute of Environmental Science and Technology, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou, 310058, China
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Zhou MX, Chen B, Sun HB, Wan JG, Li ZW, Liu JM, Song FQ, Wang GH. Local electrical conduction in polycrystalline La-doped BiFeO₃ thin films. Nanotechnology 2013; 24:225702. [PMID: 23637078 DOI: 10.1088/0957-4484/24/22/225702] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Local electrical conduction behaviors of polycrystalline La-doped BiFeO3 thin films have been investigated by combining conductive atomic force microscopy and piezoelectric force microscopy. Nanoscale current measurements were performed as a function of bias voltage for different crystal grains. Completely distinct conducting processes and resistive switching effects were observed in the grain boundary and grain interior. We have revealed that local electric conduction in a grain is dominated by both the grain boundary and ferroelectric domain, and is closely related to the applied electric field and the as-grown state of the grain. At lower voltages the electrical conduction is dominated by the grain boundary and is associated with the redistribution of oxygen vacancies in the grain boundary under external electric fields. At higher voltages both the grain boundary and ferroelectric domain are responsible for the electrical conduction of grains, and the electrical conduction gradually extends from the grain boundary into the grain interior due to the extension of the ferroelectric domain towards the grain interior. We have also demonstrated that the conduction dominated by the grain boundary exhibits a much small switching voltage, while the conduction of the ferroelectric domain causes a much high switching voltage in the grain interior.
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Affiliation(s)
- Ming-Xiu Zhou
- National Laboratory of Solid State Microstructures, and Department of Physics, Nanjing University, Nanjing 210093, People's Republic of China
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Wang GH, Dai CL, Liu YF, Li YM. Cerebral and renal abscess and retino-choroiditis secondary to Candida albicans in preterm infants: eight case retrospective study. CLIN EXP OBSTET GYN 2013; 40:519-523. [PMID: 24597247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVES To assess the tissues and organs commonly involved and the clinical features in the invasive fungal infection (IFI) of Candida albicans in the preterm infants. MATERIALS AND METHODS Eight preterm infants who developed IFI with positive blood culture for Candida albicans were retrospectively studied. All infants received selected clinical and laboratory parameters evaluation, such as blood culture, cerebral magnetic resonance imaging (MRI), cerebrospinal fluid (CSF) biochemical test, routine urine test, urine culture, renal ultrasonography, renal computer tomography (CT), and fundus examination. The re-examinations were performed after one to two months follow-up. RESULTS Cerebral abscesses were detected in six infants. Five cases developed renal systemic fungal infection, among which one had renal abscess. Three cases were complicated with fungal retino-choroiditis. CONCLUSIONS Preterm infants, especially very-low-birthweight (VLBW) and extremely-low-birth-weight (ELBW) infants are susceptible to fungi. The majority of preterm late-onset fungal infections are due to Candida albicans. The organs commonly involved in the IFI of Candida albicans are central nervous system (CNS), kidney and fundus, among which renal systemic fungal infection are prone to recur, calling for a prolonged anti-fungi treatment course.
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Affiliation(s)
- G H Wang
- Department of Pediatrics, First Hospital ofJilin University, Changchun, China
| | - C L Dai
- Department of Pediatrics, First Hospital ofJilin University, Changchun, China
| | - Y F Liu
- Department of Pediatrics, First Hospital ofJilin University, Changchun, China
| | - Y M Li
- Department of Pediatrics, First Hospital ofJilin University, Changchun, China
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Ding WF, Chen TS, Liao KM, He LB, Song FQ, Zhou JF, Wan JG, Wang GH, Han M. Scaling the dynamic electron scattering in imaging the graphene sheets by the high-angle annular dark-field microscopy. J Nanosci Nanotechnol 2012; 12:6494-6498. [PMID: 22962772 DOI: 10.1166/jnn.2012.5445] [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] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Employing the graphene sheets (GSs), the electron scattering constants are measured in the high-angle annular dark-field (HAADF) imaging by the scanning transmission electron microscopy. Single scattering is found to be dominant until the layer number of 200, complying with a simple relation of I = Io(1 - e(-tau/lambda)). The discrete layer counting of the GSs enables precise determination of incident depths. This work results values of lambda = 48.2, 61.4, 97.9 and 115.6 nm for 80, 120, 160 and 200 keV electrons, respectively. The uncertainties with the mean free paths and the cross sections are confined to 10 percent. The dependences on the electron beam energy and the collection angle are discussed based on a multislice simulation.
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Affiliation(s)
- W F Ding
- National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210093, China
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Abstract
A proliferation-inducing ligand (APRIL) which stimulates the cell proliferation is abundantly expressed in colorectal cancer (CRC) tumors. In this report, the promoter region of the APRIL gene was determined and the major transcription factor was investigated for the first time. Deletion analysis of 5'-flanking region of the human APRIL gene and transient transfection revealed that a 538 bp region (from -1539 to -1001) was essential for promoter activation of the APRIL gene. The data from electrophoretic mobility shift assays (EMSA) indicated that the 538 bp promoter region was responsive to the specificity protein 1 (Sp1) and nuclear factor kappa B (NF-kB). Overexpression of Sp1 or NF-kB increased the activity of the APRIL promoter. Mithramycin A (inhibitor of Sp1) and Bay11-7082 (inhibitor of NF-kB) exhibited an inhibitory activity to APRIL promoter. Our results will benefit to the APRIL gene regulation investigation and contribute to discover new drug target for the APRIL gene therapy of CRC.
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Affiliation(s)
- J Xu
- Department of Clinical Laboratory Center, Affiliated Hospital of Nantong University, Nantong, China
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Qi W, Zhao T, Yang WW, Wang GH, Yu H, Zhao HX, Yang C, Sun LX. Comparative pharmacokinetics of chlorogenic acid after oral administration in rats. J Pharm Anal 2011; 1:270-274. [PMID: 29403709 PMCID: PMC5760807 DOI: 10.1016/j.jpha.2011.09.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Accepted: 08/14/2011] [Indexed: 12/03/2022] Open
Abstract
The present study was aimed at the comparison of the pharmacokinetics of pure chlorogenic acid and extract of Solanum lyratum Thunb. The animals were allocated to two groups, and were administered chlorogenic acid or extract of S. lyratum Thunb. at a dose of 50.0 mg/kg orally. Blood samples were collected up to 8 h post-dosing. Plasma chlorogenic acid analyses were performed using an HPLC method with UV detector. The pharmacokinetic parameters were evaluated using non-compartmental assessment. Significant differences existed in the two groups for AUC0−t, AUC0−∞ and CLz/F. The reliable HPLC method was successfully applied to the determination of chlorogenic acid in rat plasma at dosage of 50.0 mg/kg.
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Affiliation(s)
- Wei Qi
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Ting Zhao
- Liaoning Institute of Pharmaceutical Industry, Shenyang 110015, China
| | - Wen-Wen Yang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Guang-Hou Wang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Hua Yu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Hai-Xiao Zhao
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Chen Yang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Li-Xin Sun
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
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Huang Y, Zhang HQ, Wang J, Song XG, Wang GH, Guan Q, Zho W, Huo F, Yu CZ, Zeng YJ. Cloning expression, monoclonal antibody preparation and serologic study of mammaglobin in breast cancer. Neoplasma 2011; 58:436-40. [PMID: 21744998 DOI: 10.4149/neo_2011_05_436] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
UNLABELLED Mammaglobin may be a potential serum biomarker for the differential diagnosis of breast cancer. 260 serum samples were collected from 127 untreated breast cancer patients and 133 healthy volunteers to analyze the sera expression of mammaglobin and its implications for both. The expression vector of pGEX-4T-2-Mammaglobin and pBVIL1-Mammaglobin were constructed and transformed into E.coli.HB101 for expression. The mice were immunized with the purified recombinant protein to prepare monoclonal antibody and to detect by ELISA the serum of normal people and breast cancer patients. Recombinant mammaglobin antigen was effectively expressed in E.coli. Two hybridoma cell lines were obtained after the mice were immunized by pGEX-4T-2-mammaglobin. 133 cases of normal serum and 127 cases of breast cancer serum were analyzed by ELISA. The sera expression level of mammaglobin in breast cancer group (average OD value 0.645±0.223) was significantly (p KEYWORDS mammaglobin; cloning expression; monoclonal antibody; serologic study; breast cancer.
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Affiliation(s)
- Y Huang
- Affiliated 307 Hospital, Academy of Military Medical Sciences, Beijing, China
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Xu CH, Chen X, Liu YJ, Xie B, Han M, Song FQ, Wang GH. Enhanced thermal stability of monodispersed silver cluster arrays assembled on block copolymer scaffolds. Nanotechnology 2010; 21:195304. [PMID: 20400820 DOI: 10.1088/0957-4484/21/19/195304] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Triblock copolymer poly(styrene-b-butadiene-b-styrene) (SBS) films with long-range ordered self-assembled nanopatterns are used as templates to selectively adsorb soft-landing silver clusters. Closely spaced cluster arrays with high monodispersity are formed through the confinement of the block copolymer scaffolds, and show a much enhanced thermal stability as compared with the cluster assemblies on the surfaces of covalent amorphous solids, or even on the disordered SBS films. Their morphologies are barely influenced by long time thermal annealing at a temperature as high as 180 degrees C, while in the latter case intense aggregations and coalescences of silver clusters are commonly observed upon annealing. The different thermal stabilities of the cluster assemblies also induce different evolutions of their optical extinction spectra under annealing. This promises a simple way to control the monodispersity and thermal stability of metal cluster assembly via self-assembled block copolymer template.
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Affiliation(s)
- C H Xu
- National Laboratory of Solid State Microstructures and Department of Materials Science and Engineering, Nanjing University, Nanjing 210093, People's Republic of China
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Malluche HH, Siami GA, Swanepoel C, Wang GH, Mawad H, Confer S, Smith M, Pratt RD, Monier-Faugere MC. Improvements in renal osteodystrophy in patients treated with lanthanum carbonate for two years. Clin Nephrol 2008; 70:284-295. [PMID: 18826853] [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: 05/26/2023] Open
Abstract
AIMS To investigate the evolution of renal osteodystrophy in patients on maintenance dialysis, treated with lanthanum carbonate (LC) vs. standard phosphate-binder therapy (Stx). MATERIALS AND METHODS This was a 2-year, randomized, prospective, open-label study during which patients on dialysis received LC titrated to a maximum of 3,000 mg/day or their previous phosphate binder treatment with the aim to achieve target phosphorus levels of < or = 5.9 mg/dl. Paired bone biopsy samples for histomorphometric analysis were available at baseline and 1 year (LC 32, Stx 33), and at baseline and 2 years (LC 32, Stx 24). RESULTS With similar phosphorus control, Stx was associated with numerically higher serum calcium levels at most visits. Results of osteocalcin and bone-specific alkaline phosphatase in LC patients were higher throughout the study and correlated with parameters of bone formation; however, the differences were not significant. Histological changes in bone turnover and volume were analyzed with respect to normal ranges. There was an improvement in bone turnover in the LC group, which was significant in the 1-year group, and an improvement in bone volume which was significant in the 2-year group. No significant changes in bone turnover or bone volume were observed in the Stx groups. In the 2-year LC group, 1 patient had osteomalacia at baseline and end of therapy, and a mineralization defect developed in 2 other patients. Several possible factors for a mineralization defect were present in these patients, but no single cause could be clearly identified. Histomorphometric parameters of bone, including formation and mineralization, did not correlate with bone lanthanum. No mineralization defect was observed in the Stx groups. CONCLUSION These findings show that similar phosphorus control with Stx and LC results in higher bone turnover after 1 year and higher bone volume after 2 years with LC.
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Affiliation(s)
- H H Malluche
- Division of Nephrology, Bone and Mineral Metabolism, University of Kentucky, Lexington, KY 40536, USA.
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Zhang YL, Liu FJ, Sun DQ, Chen XQ, Zhang Y, Zheng YM, Zhao MT, Wang GH. Phytohemagglutinin improves efficiency of electrofusing mammary gland epithelial cells into oocytes in goats. Theriogenology 2008; 69:1165-71. [PMID: 18400286 DOI: 10.1016/j.theriogenology.2007.10.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2007] [Revised: 10/28/2007] [Accepted: 10/20/2007] [Indexed: 11/16/2022]
Abstract
The objective was to investigate the effect of phytohemagglutinin (PHA) on the fusion of mammary gland epithelial (MGE) cells into enucleated oocytes in goats. The toxicity of PHA was evaluated by testing its effect on the development of parthenogenetic caprine oocytes. The effective dose and duration of PHA treatment (100 microg/mL, 20 min incubation) was selected and used to compare fusion efficiency and embryo development following nuclear transfer. Two electrofusion protocols, chamber fusion (CF) and pressurized microelectrode fusion (pMEF), were also compared, when couplets were treated with and without PHA (100 microg/mL, 20 min). Fusion rate of couplets increased from 52.8 to 74.0% for the CF protocol (P<0.05), but was not significantly different for the pMEF protocol (72.7% vs. 78.1%) after PHA treatment. There were no significant differences between treated group and control in rates of subsequent cleavage or blastocyst development. Following transfer of the cloned blastocysts derived from the PHA-treated group and the control group into synchronized recipients, pregnancy rates (Day 30) were not significantly different between treated group and control (28.6% vs. 25.0%). However, all recipients aborted within 120d, microsatellite DNA analyses confirmed that the aborted fetuses were genetically identical to the donor goat. In conclusion, the fusion rate of caprine MGE cell couplets was improved by pre-incubating couplets in medium containing 100 microg/mL PHA prior to electrical pulsing, and embryos derived from PHA treatment established early pregnancies.
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Affiliation(s)
- Y L Zhang
- Institute of Biotechnology, Northwest Sci-Tech University of Agriculture & Forestry, Yangling, Shaanxi 712100, China
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Wang GH, Wang J, Qi W, Chen Y, Sun LX. [Tissue distribution and excretion of 5-fluorouracil from indomethacin 5-fluorouracil-1-ylmethylester in rats]. Yao Xue Xue Bao 2008; 43:81-85. [PMID: 18357738] [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: 05/26/2023]
Abstract
To study the tissue distribution and excretion of indomethacin 5-fluorouracil-1-ylmethyl ester (IFM) metabolite 5-fluorouracil in rats, an accurate and specific high performance liquid chromatography method for quantifying IFM in rat plasma and tissues was developed. Biological samples were prepared by liquid-liquid extraction and separated on a Diamonsil C18 column (250 mm x 4.6 mm ID, 5 microm). The mobile phase for tissue samples, plasma samples and feces samples were composed of methanol-water-36% acetic acid (3:96.9:0.1, v/v) and the mobile phase for urine samples was a mixture of methanol-water-36% acetic acid (10:89.9:0.1, v/v). The eluate was monitored by UV absorbance at 260 nm. After a single ig dose of 100 mg x kg(-1) IFM in rats, 5-Fu was mainly distributed in stomach, small intestine, and liver. The concentrations of 5-fluorouracil in other tissues and plasma were low. The excretion of 5-Fu in urine and feces amounted to 0.0065% and 0.063% of the dose, respectively. The method is shown to be accurate and specific, and suitable for preclinical pharmacokinetic studies of IFM.
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Affiliation(s)
- Guang-Hou Wang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
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Guo P, Ren ZY, Wang F, Bian J, Han JG, Wang GH. Structural and electronic properties of TaSi(n) (n=1-13) clusters: a relativistic density functional investigation. J Chem Phys 2006; 121:12265-75. [PMID: 15606244 DOI: 10.1063/1.1809609] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The TaSi(n) (n=1-13) clusters with doublet, quartet, and sextet spin configurations have been systematically investigated by a relativistic density functional theory with the generalized gradient approximation available in Amsterdam density functional program. The total bonding energies, equilibrium geometries, Mulliken populations as well as Hirshfeld charges of TaSi(n) (n=1-13) clusters are calculated and presented. The emphasis on the stabilities and electronic properties is discussed. The most stable structures of the small TaSi(n) (n=1-6) clusters and the evolutional rule of low-lying geometries of the larger TaSi(n) (n=7-13) clusters are obtained. Theoretical results indicate that the most stable structure of TaSi(n) (n=1-6) clusters keeps the similar framework as the most stable structure of Si(n+1) clusters except for TaSi(3) cluster. The Ta atom in the lowest-energy TaSi(n) (n=1-13) isomers occupies a gradual sinking site, and the site moves from convex, to flatness, and to concave with the number of Si atom varying from 1 to 13. When n=12, the Ta atom in TaSi(12) cluster completely falls into the center of the Si frame, and a cagelike TaSi(12) geometry is formed. Meanwhile, the net Mulliken and Hirsheld populations of the Ta atom in the TaSi(n) (n=1-13) clusters vary from positive to negative, manifesting that the charges in TaSi(n) (n>/=12) clusters transfer from Si atoms to Ta atom. Additionally, the contribution of Si-Si and Si-Ta interactions to the stability of TaSi(n) clusters is briefly discussed. Furthermore, the investigations on atomic averaged binding energies and fragmentation energies show that the TaSi(n) (n=2,3,5,7,10,11,12) clusters have enhanced stabilities. Compared with pure silicon clusters, a universal narrowing of highest occupied molecular orbital-lowest unoccupied molecular orbital gap in TaSi(n) clusters is found.
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Affiliation(s)
- Ping Guo
- Institute of Photonics & Photon-Technology, Northwest University, Xi'an 710069, China
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Guo P, Ren ZY, Yang AP, Han JG, Bian J, Wang GH. Relativistic Computational Investigation: The Geometries and Electronic Properties of TaSin+ (n = 1−13, 16) Clusters. J Phys Chem A 2006; 110:7453-60. [PMID: 16759135 DOI: 10.1021/jp060130f] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The equilibrium geometries, stabilities, and electronic properties of the TaSi(n)+ (n = 1-13, 16) clusters are investigated systematically by using the relativistic density functional method with generalized gradient approximation. The small-sized TaSi(n)+ clusters with slight geometrical adjustments basically keep the frameworks that are analogous to the neutrals while the medium-sized charged clusters significantly deform the neutral geometries, which are confirmed by the calculated AIP and VIP values. Furthermore, the optimized geometries of the charged clusters agree with the experimental results of Hiura and co-workers (Hiura, H.; Miyazaki, T.; Kanayama, T. Phys. Rev. Lett. 2001, 86, 1733). The highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) gaps of the charged clusters are generally increased as the cluster size goes from n = 1 to 13; and the large HOMO-LUMO gaps of charged clusters resulting from the positive charge indicate that their chemical stabilities are stronger than their neutral counterparts, especially for n = 4, 6, and 7 clusters. Additionally, the contributions of the d orbitals of the Ta atom to the HOMO and LUMO reveal that the chemical activity of the d orbitals of the Ta atom decreases gradually as the number of silicon atoms increases. This interesting finding is in good agreement with the recent experimental results on the reactive activities of the H2O and transition-metal silicon clusters (Koyasu, K.; Akutsu, M.; Mitsui, M.; Nakajima, A. J. Am. Chem. Soc. 2005, 127, 4998). Generally, the positive charge significantly influences the electronic and geometric structures of the charged clusters. Finally, the most stable neutral and charged TaSi16 clusters are found to be fullerene-like structures and the HOMO-LUMO gap in charged form is detectable experimentally.
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Affiliation(s)
- Ping Guo
- Institute of Photonics & Photon-Technology and Department of Physics, Northwest University, Xi'an 710069, China
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Wang GH, Clemens NT, Varghese PL. Two-point, high-repetition-rate Rayleigh thermometry in flames: techniques to correct for apparent dissipation induced by noise. Appl Opt 2005; 44:6741-51. [PMID: 16270563 DOI: 10.1364/ao.44.006741] [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] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
High-repetition-rate, two-point Rayleigh thermometry is used to measure the thermal dissipation in turbulent nonpremixed jet flames. Scalar-dissipation measurements are very important in turbulent combustion but are often strongly influenced by noise effects. Dissipation is proportional to the squared gradient of the scalar, and noise produces an "apparent dissipation" that can dominate the measured dissipation, particularly at high resolution. Two independent techniques are presented that enable correction for the apparent thermal dissipation, provided that the smallest spatial scales are resolved. A model for shot-noise-limited data is developed that predicts the magnitude of the apparent dissipation at any measurement location and gives the minimum value of the apparent dissipation for measurements that are not shot-noise limited. These techniques are applied to the Rayleigh thermometry data, and they are shown to be largely self-consistent and consistent with theoretical expectations. The apparent dissipation is significantly larger than the true dissipation, demonstrating the importance of data correction in this noise-limited, fully spatially resolved regime.
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Affiliation(s)
- G H Wang
- Center for Aeromechanics Research, Department of Aerospace Engineering and Engineering Mechanics, The University of Texas at Austin, Austin, Texas 78712-0235, USA
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Abstract
In this paper, investigation of the structure of palladium nanowire has been performed by using genetic algorithm simulation based on the molecular dynamics. Our calculation employs a well-fitted, tight-binding many-body potential for Pd atoms. Some local atomic structures and defects in nanowires have been reported. The melting behavior of palladium nanowire has also been investigated. An interesting result is that the diffusion of the central atoms results in the beginning of the melting. The moving central atoms build up a monostrand atomic chain during the melting process. The single atomic chain is very stable which can exist in a wide temperature region (800-950 K). The formation of the single atomic chain causes some new defects in the nanowire. And the new defects result in the decrease of the thermal stability of the nanowire. Interestingly, the liquid from the nanowire melting has a supercooled feature because the splitting of the second peak of pair correlation function is observed. The curves of the internal energy and the local cluster are used to monitor the phase transition. The melting of the nanowire is not only due to the single atomic diffusion, but also the diffusion of the local clusters.
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Affiliation(s)
- Li Hui
- Physics Department, Trento University, I-38050, Povo, Trento, Italy
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Abstract
Using remote sensing technique, we investigated real-time Nostoc sphaeroides Kütz (Cyanobacterium) in Closed System under microgravity by SHENZHOU-2 spacecraft in January 2001. The experiments had 1 g centrifuges in space for control and ground control group experiments were also carried out in the same equipments and under the same controlled condition. The data about the population growth of Nostoc sp. of experiments and temperature changes of system were got from spacecraft every minute. From the data, we can find that population growth of Nostoc sp. in microgravity group was higher than that of other groups in space or on ground, even though both the control 1 g group in space and 1 g group on ground indicated same increasing characteristics in experiments. The growth rate of 1.4 g group (centrifuged group on ground) was also promoted during experiment. The temperature changes of systems are also affected by gravity and light. Some aspects about those differences were discussed. From the discussion of these results during experiment, it can be found that gravity is the major factor to lead to these changes.
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Affiliation(s)
- G H Wang
- Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan, China
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Abstract
In this paper, we analyze the melting behavior of zirconium nanowire using the results of a series of molecular dynamics simulations. Our calculation employs a well-fitted, tight-binding many-body potential for zirconium atoms. The melting point of the nanowire is predicted by the root-mean-square displacements for inner and outer shells. Our simulations predict two melting behaviors: one is the inner melting and the other is the outer melting. Our results reveal that the melting of nanowire starts from the inner shell atoms. The melting point of zirconium nanowire is lower than the bulk value (2125 K). Moreover, the melting point of the inner shell is lower than that of the outer shell. A coexistence of crystal and liquid units is observed in the melting process of nanowire. An investigation of local clusters is carried out to further analyze the melting mechanism of the nanowire. The presence of the local clusters 1331, 1321, 1211, etc. is an indication of disordered structures. The pair and angular correlation functions are also presented for the analysis of the melting behavior. It is not only the diffusion of single atom but the diffusion of clusters result in the occurrence of the melting.
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Affiliation(s)
- Li Hui
- Physics Department and INFM, Trento University I-38050, Povo, Trento, Italy.
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Garvey TL, Bertin J, Siegel RM, Wang GH, Lenardo MJ, Cohen JI. Binding of FADD and caspase-8 to molluscum contagiosum virus MC159 v-FLIP is not sufficient for its antiapoptotic function. J Virol 2002; 76:697-706. [PMID: 11752160 PMCID: PMC136828 DOI: 10.1128/jvi.76.2.697-706.2002] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.8] [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: 12/17/2022] Open
Abstract
Molluscum contagiosum virus (MCV), a member of the human poxvirus family, encodes the MC159 protein that inhibits Fas-, tumor necrosis factor (TNF)-, and TNF-related apoptosis-inducing ligant (TRAIL)-induced apoptosis. We used site-directed mutagenesis to change charged or hydrophobic amino acid residues to alanines to identify regions of MC159 that are critical for protection from apoptosis and for protein-protein interactions. Surprisingly, while MC159 is thought to block apoptosis by binding to Fas-associated death domain (FADD) or caspase-8, several mutants that lost apoptosis blocking activity still bound to both FADD and caspase-8. Mutations in the predicted hydrophobic patch 1 and alpha2 regions of both death effector domains (DEDs) within MC159 resulted in loss of the ability to bind to FADD or caspase-8 and to block apoptosis. Amino acid substitutions in the RXDL motif located in the alpha6 region of either DED resulted in loss of protection from apoptosis induced by Fas, TNF, and TRAIL and abolished the ability of MC159 to block death effector filament formation. Thus, charged or hydrophobic amino acids in three regions of the MC159 DEDs (hydrophobic patch 1, alpha2, and alpha6) are critical for the protein's ability to interact with cellular proteins and to block apoptosis.
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Affiliation(s)
- Tara L Garvey
- Medical Virology Section, Laboratory of Clinical Investigation, Molecular Development of the Immune System Section, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland 20892, USA
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Tu ZJ, Wang GH. [Experience in use of immediate complete denture restoration in 30 patients]. Shanghai Kou Qiang Yi Xue 2001; 10:190. [PMID: 14994061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Affiliation(s)
- Z J Tu
- Department of Dentistry, Central Hospital of Putuo District, Shanghai 200062, China
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Liu CL, Guan CY, Li X, Ruan Y, Liao XL, Xiong XH, Zhou XY, Wang GH, Chen SY. [Construction of linkage map and mapping resistance gene of Scterotinia scterotiorum in Brassica napus]. Yi Chuan Xue Bao 2001; 27:918-24. [PMID: 11192437] [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: 02/19/2023]
Abstract
Scterotinia scterotiorum (Lib.) de by is a world-wide disease, which seriously decreases the yield and the quality of oil of rapeseed. Mapping resistance genes of S. scterotiorum is of vital effect to breed new elite cultivars resisting the disease. In this paper, we reported that a RAPD linkage map was constructed, including 193 RAPD markers, 19 linkage groups and covering 1,324 cM, by using Mapmaker 3.0. On the basis of map, and resistance genes, Sc1, Sc2 and Sc3, were located in 4th, 8th and 18th linkage groups. Among three QTLs, Sc2 has the characteristics of major gene with explained 29%. The three QTLs together explained about 56% of phenotypic variation.
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Affiliation(s)
- C L Liu
- Crop Gene Engineering Key Lab. of Hunan Province Hunan Agricultural University, Changsha 410128, China
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48
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Tu ZJ, Wang GH. [The experience of lining after restoration with immediate complete denture]. Shanghai Kou Qiang Yi Xue 2001; 10:95. [PMID: 14994101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Affiliation(s)
- Z J Tu
- Department of Dentistry, Central Hospital of Putuo District, Shanghai 200062, China
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Wang GH, Zheng XR, Fang TZ. [Effects of sera of patients with pregnancy-induced hypertension on the synthesis of nitric oxide and endothelin-1 of endothelial cells]. Hunan Yi Ke Da Xue Xue Bao 2000; 25:595-6. [PMID: 12516421] [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: 02/28/2023]
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50
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Abstract
Five new suberosane sesquiterpenes, suberosenol A (1), suberosenol B (2), suberosanone (3), suberosenol A acetate (4), and suberosenol B acetate (5), along with the known sesquiterpene subergorgic acid (6), have been isolated from the gorgonian Isis hippuris. The structures of these metabolites were established by spectroscopic and chemical methods. Metabolites 1 and 3-5 were found to exhibit potent cytotoxicity toward P-388, A549, and HT-29 cancer cell lines.
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Affiliation(s)
- J H Sheu
- Department of Marine Resources, National Sun Yat-Sen University, Kaohsiung, Taiwan 804, Republic of China.
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