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Zhou JW, Huang LL, You DF, Chen F, Zhao Y. [The emulation of clinical trials with real-world data: development and application of target trial]. Zhonghua Liu Xing Bing Xue Za Zhi 2024; 45:279-285. [PMID: 38413069 DOI: 10.3760/cma.j.cn112338-20230821-00081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
Clinical trial is the gold standard for evaluating the efficacy and safety of interventions; however, it is limited by high costs and long time. Real-world data (RWD) can provide a robust data basis for comparative research, but the quality is uneven. This review introduces the target trial emulation, in which researchers, using RWD and following the design of clinical trials, define exposure and outcome in advance, set eligibility criteria, determine the time zero, estimate sample size, and plan statistical analysis, to enhance the quality of evidence for observational studies. This review preliminarily discusses the standard of evidence quality evaluation in target trial emulation. Then, the target trial emulation is shown through case interpretation.
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Affiliation(s)
- J W Zhou
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - L L Huang
- Department of Biostatistics, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - D F You
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - F Chen
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Y Zhao
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China
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Wu Y, Huang LL, Gu MY, Guo WY. [Medium-term efficacy and safety analysis of Ex-PRESS shunt implantation for the treatment of secondary glaucoma in Sturge-Weber syndrome]. Zhonghua Yan Ke Za Zhi 2023; 59:716-722. [PMID: 37670654 DOI: 10.3760/cma.j.cn112142-20230323-00113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
Objective: To evaluate the medium-term efficacy and safety of Ex-PRESS shunt implantation in the treatment of secondary glaucoma associated with Sturge-Weber Syndrome (SWS). Methods: This was a retrospective case series study. Medical records of patients diagnosed with secondary glaucoma due to SWS who underwent Ex-PRESS shunt implantation at Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, between January 2013 and February 2020 were collected. Only the right eye were included in the analysis when both eyes were affected. Follow-up visits were scheduled at postoperative week 1, 3 months, 6 months, 1 year, 2 years, and 3 years. Clinical data including intraocular pressure (IOP), vertical cup-to-disc (C/D) ratio, corneal horizontal diameter, visual field, anterior chamber condition, anti-glaucoma medication usage, and additional surgeries were evaluated and analyzed before and after the procedure. Surgical success rates and procedure-related complications at each follow-up time point were assessed. Statistical analyses were performed using t-test, Mann-Whitney U test, and χ2 test. Results: A total of 21 patients (21 eyes) were included in the study, comprising 10 females and 11 males. Among them, 15 eyes were on the right side, and 6 eyes were on the left side. The patients' ages ranged from 3 to 51 years, with a median age of 8.1 (6.3, 11.9) years. The follow-up period ranged from 3 to 53 months, with a median of 11 (6, 24) months. Preoperatively, the IOP in the 21 operated eyes was (32.9±9.1) mmHg (1 mmHg=0.133 kPa), significantly higher than the IOP in the 19 healthy eyes, which was (17.1±4.3) mmHg (t=5.80, P<0.001). The C/D ratio in the operated eyes was (0.75±0.13), also significantly higher than that in the healthy eyes, which was (0.32±0.10) (t=11.22, P<0.001). At the 1-year, 2-year, and 3-year follow-up, 8 eyes out of 16 operated eyes, 6 eyes out of 9 operated eyes, and 7 eyes out of 10 operated eyes achieved overall surgical success (complete success+conditional success), respectively. The number of eyes with complete success at the three follow-up time points was 3, 2, and 4, respectively. The IOP in the operated eyes was significantly reduced at all follow-up time points compared to preoperative values (all P<0.05), while there was no statistically significant difference in C/D ratio before and after surgery (all P>0.05). Two operated eyes experienced retinal detachment or choroidal leakage postoperatively, both of which recovered after conservative treatment. One eye developed postoperative degree Ⅰ shallow anterior chamber, and it resolved spontaneously on the third day after surgery. No serious surgical complications, such as bleb-related complications, malignant glaucoma, expulsive choroidal hemorrhage, or endophthalmitis, were observed postoperatively. Conclusions: Ex-PRESS shunt implantation for the treatment of secondary glaucoma in SWS demonstrated a relatively high level of safety. The medium-term IOP in the operated eyes significantly decreased compared to preoperative values. However, the majority of operated eyes did not achieve complete surgical success.
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Affiliation(s)
- Y Wu
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai 200011, China
| | - L L Huang
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai 200011, China
| | - M Y Gu
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai 200011, China
| | - W Y Guo
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai 200011, China
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Huang LL, Chen F. [Statistical methods of unmeasured confounder control based on negative control theory]. Zhonghua Liu Xing Bing Xue Za Zhi 2023; 44:1133-1138. [PMID: 37482718 DOI: 10.3760/cma.j.cn112338-20221212-01063] [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: 07/25/2023]
Abstract
Controlling unmeasured confounders in non-randomized controlled studies is challenging. Negative control theory is based on the theoretical concept that the test result of negative controls must be negative. Setting appropriate negative control incorporates the specificity of association into population studies for the identification and control of unmeasured confounders. This paper explains the principles to control unmeasured confounders using negative control theory from a statistical perspective. A detailed introduction of derived methods based on negative control theory is also introduced, including adjusted standardized mortality ratio method, calibrating P-value method, generalized difference-in-difference model and double negative control method. The reasonable application of those derived methods is also comprehensively summarized based on representative case studies. Negative control is an important statistical design to identify, revise and control unmeasured confounders and a valuable method for comparative effectiveness research based on real-world data.
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Affiliation(s)
- L L Huang
- Department of Biostatistics, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - F Chen
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China
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Mai W, Bu XZ, Miao FR, Rui JL, Huang LL, Zhao XJ, Fan YS. [Moxibustion at Baihui combined with acupuncture for cervical vertigo: a Meta-analysis and trial sequential analysis]. Zhen Ci Yan Jiu 2023; 48:95-101. [PMID: 36734505 DOI: 10.13702/j.1000-0607.20211054] [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: 02/04/2023]
Abstract
OBJECTIVE To evaluate the efficacy and safety of moxibustion at Baihui (CV20) combined with acupuncture in treatment of cervical vertigo. METHODS From the databases, such as CNKI, VIP, WanFang, CBM, PubMed, Cochrane Library and Embase, the studies of randomized controlled trials (RCTs) on moxibustion at CV20 combined with acupuncture for cervical vertigo were searched from inception to September 15th, 2021. The Cochrane risk of bias assessment tool was utilized to evaluate the quality of the included literature. Using RevMan5.3, Stata12.0 and TSA0.9.5.0 10 Beta software, the Meta-analysis and trial sequential analysis (TSA) were performed. RESULTS Seventeen RCTs with 1 232 patients were included. Meta-analysis showed that in the trial group (moxibustion at CV20 combined with acupuncture), the total effective rate (RR=1.17, 95%CI[1.12, 1.22], P<0.000 1), the curative and remarkably-effective rate (RR=1.28,95%CI[1.20,1.36],P<0.000 1) and the score of cervical vertigo (WMD=2.88, 95%CI[1.87, 3.89], P<0.000 1) were all better when compared with the control group (simple acupuncture or electroacupuncture group). The results of trial sequential analysis indicated that for the cumulative Z-score of each RCT, the Z-curve crossed the conventional test boundary and TSA boundary, which further confirmed the clinical efficacy of moxibustion at CV20 combined with acupuncture on cervical vertigo. CONCLUSION The clinical efficacy of moxibustion at CV20 combined with acupuncture is determined in treatment of cervical vertigo.
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Affiliation(s)
- Wei Mai
- Department of Traditional Chinese Medicine, Guangxi Medical University Cancer Hospital, Nanning 530021, China; Guangxi University of Chinese Medicine, Nanning 530001
| | - Xian-Zhong Bu
- Guangxi University of Chinese Medicine, Nanning 530001
| | - Fu-Rui Miao
- Guangxi University of Chinese Medicine, Nanning 530001
| | - Jing-Lin Rui
- College of Acupuncture and Massage, Guangxi University of Chinese Medicine, Nanning 530001
| | - Li-Lin Huang
- Guangxi University of Chinese Medicine, Nanning 530001
| | - Xiao-Jun Zhao
- Guangxi University of Chinese Medicine, Nanning 530001
| | - Yu-Shan Fan
- College of Acupuncture and Massage, Guangxi University of Chinese Medicine, Nanning 530001
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Huang LL, Ma XM, Huang HT, Xie ZQ, Gou JB, Yang YL, Wang X, Zhang W, You WY, Tan JB, Xu LF, Feng GW, Zhu T, Wang Y. [Immunogenicity of group A+C meningococcal polysaccharide conjugate vaccine in infants: A phase Ⅲ clinical trial study]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:1728-1733. [PMID: 36536558 DOI: 10.3760/cma.j.cn112150-20211206-01124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Objective: To evaluate the immunogenicity of group A+C meningococcal polysaccharide conjugate vaccine in infants under 2 years old. Methods: From March 2017 to June 2018, 1 932 healthy infants in Biyang County, Henan Province, who were not vaccinated with meningococcal meningitis vaccine and whose axillary temperature was ≤37.0 ℃, were recruited as participants. The 3 months and 6-11 months old infants were allocated to the experiment group and the control group in a ratio of 1∶1. Infants aged 12-23 months were allocated to the 1-dose group, the 2-dose group and the control group in a ratio of 1∶1∶1, with 276 infants in each group. The infants in the experiment group were intramuscularly injected with freeze-dried group A+C meningococcal polysaccharide conjugate vaccine to be evaluated, and infants in the control group received intramuscular injection of commercially available freeze-dried group A+C meningococcal conjugate vaccine. The venous blood of infants was collected 30 days before the first dose and after the last dose of inoculation, and the antibody seroconversion of each group was determined and compared. Results: The completion rate of immunogenicity study was 95.2% (1 839/1 932). Before inoculation, there was no statistical difference in the geometric mean titer and positive rate of group A+C antibodies between the experiment group and the control group in 3 months and 6-11 months old infants (all P values >0.05). The geometric mean titers and positive rate of group A antibodies in the 1-dose group were higher than those in the control group (all P values <0.05), but there was no statistical difference between the 2-dose group and the control group (all P values >0.05) in infants aged 12-23 months. After inoculation, the differences (95%CI) in the positive conversion rate of group A+C antibodies between the experiment group and the control group were -0.12% (-6.01%-5.77%) and 0.82% (-4.23%-5.86%) in the 3 months old infants. At the age of 6-11 months, the differences were 6.75% (1.71%-11.79%) and -4.32% (-8.73%-0.08%), respectively. At the age of 12-23 months, the differences were 1.02% (-3.80%-5.83%) and -4.40% (-7.79%- -1.01%) in the 2-dose group and -7.22% (-12.90%- -1.54%) and -18.61% (-23.75%- -13.46%) in the 1-dose group, respectively. The geometric mean titers of group A+C antibodies in the 3 months old infants were 48.50 and 63.12, respectively, which had no significant difference from the control group (43.02 and 57.99, respectively) (both P values <0.05). The geometric mean titers of group A+C antibodies in the 6-11 months and 12-23 months old infants were 84.09 and 92.51 (2-dose group), which were higher than those in the corresponding control group (43.10 and 61.83, respectively) (all P values <0.001). Conclusion: Group A+C meningococcal conjugate vaccine has good immunogenicity in infants under 2 years old.
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Affiliation(s)
- L L Huang
- Center of Vaccine Clinical Trial, Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - X M Ma
- CanSino Biologics Inc., Tianjin 300457, China
| | - H T Huang
- CanSino Biologics Inc., Tianjin 300457, China
| | - Z Q Xie
- Center of Vaccine Clinical Trial, Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - J B Gou
- CanSino Biologics Inc., Tianjin 300457, China
| | - Y L Yang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - X Wang
- CanSino Biologics Inc., Tianjin 300457, China
| | - W Zhang
- Center of Vaccine Clinical Trial, Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - W Y You
- Center of Vaccine Clinical Trial, Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - J B Tan
- Center of Vaccine Clinical Trial, Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - L F Xu
- CanSino Biologics Inc., Tianjin 300457, China
| | - G W Feng
- Center of Vaccine Clinical Trial, Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - T Zhu
- CanSino Biologics Inc., Tianjin 300457, China
| | - Yanxia Wang
- Center of Vaccine Clinical Trial, Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
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Huang LL, Shi HL, Fu LY, Liu Y, Shi LS, Zou BJ, Chen D. [Analysis of physical growth of preterm infants with different intrauterine growth patterns in Haikou]. Zhonghua Er Ke Za Zhi 2022; 60:1031-1037. [PMID: 36207850 DOI: 10.3760/cma.j.cn112140-20220426-00378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: To analyze the physical growth of preterm infants with different intrauterine growth patterns. Methods: A total of 10 856 preterm infants who were born in various districts of Haikou City from October 1st, 2015 to June 1st, 2021 and received regular health care and management were retrospectively enrolled. The preterm infants were divided into appropriate for gestational age (AGA), small for gestational age (SGA) and large for gestational age (LGA) groups according to different intrauterine growth patterns. The general characteristics of preterm infants in different groups were compared by H test (Kruskal and Wallis) or Chi-squared test. And the developmental curves were plotted by local regression (LOESS) with their physical growth indexes. Results: Of the 10 856 preterm infants, 6 317 were boys and 4 539 were girls. The gestational age at birth was 35 (34, 36) weeks, and the birth weight was 2.5 (2.1, 2.8) kg. There were 754 (6.9%) SGA, 9 301 (85.7%) AGA, and 801 (7.4%) LGA preterm infants. All preterm infants were followed up until 18 months of corrected age. The birth weight of the SGA group was lower than that of the AGA and LGA groups (Z=2 274.93, P<0.001). The proportion of exclusive breastfeeding at the first health care interview was higher in the AGA group (68.6% (6 378/9 301)) than in the SGA group (62.9% (474/754)) (χ2=13.82, P=0.003). The LOESS curving fitting showed that the weight and height of the preterm infants in all the 3 groups increased rapidly during 0-6 months of corrected age. The regression prediction values of weight for age Z-score (WAZ), height for age Z-score (HAZ) and weight for height Z-score (WHZ) were around 0 s, while the regression prediction values of these three indicators in SGA were all below 0 s but greater than -1 s. The rates of low birth weight, growth retardation and wasting during 0-17 months of corrected age were 0.3% (16/4 838)-1.9% (47/2 506), 0.4% (18/4 838) -2.4% (51/2 124), and 2.1% (88/4 135) -4.4% (214/4 838) in AGA groups, and 0 (0/296) -1.0% (2/199), 0 (0/341) -1.6% (3/186) and 1.0% (2/199) -2.6% (9/341) in LGA group, whereas 7.6% (25/330) -16.8% (28/167), 5.2% (17/330)-10.6%(32/303) and 3.9% (3/77) -12.6% (21/167) in SGA group. In addition, the monthly growth of weight and height of preterm infants in all the 3 groups decreased with the increasing age, and the monthly weight gain. The length increment was 4.0 cm/month during corrected 0-2 month of age and 2.4 cm/month during corrected 2-5 month of age in the SGA preterm infants. Conclusions: Most of the preterm infants could have an appropriate catch-up growth, but the growth and development in the SGA preterm infants lags behind that of their AGA and LGA peers. The physical growth of SGA premature infants should be paid more attention to, to timely correct the growth deviations.
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Affiliation(s)
- L L Huang
- Department of Child Health Care, Hainan Maternal and Child Health Hospital, Haikou 570203, China
| | - H L Shi
- Department of Child Health Care, Hainan Maternal and Child Health Hospital, Haikou 570203, China
| | - L Y Fu
- Department of Child Health Care, Hainan Maternal and Child Health Hospital, Haikou 570203, China
| | - Y Liu
- Department of Child Health Care, Hainan Maternal and Child Health Hospital, Haikou 570203, China
| | - L S Shi
- Department of Child Health Care, Hainan Maternal and Child Health Hospital, Haikou 570203, China
| | - B J Zou
- Department of Child Health Care, Hainan Maternal and Child Health Hospital, Haikou 570203, China
| | - D Chen
- Department of Child Health Care, Hainan Maternal and Child Health Hospital, Haikou 570203, China
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Wang JL, Xue M, Wang HF, Huang LL, Li Q, Xu JY, Xie JF, Huang YZ. [An area under curve-based nomogram to predicts vancomycin-associated nephrotoxicity in critically ill patients: a retrospective cohort study]. Zhonghua Nei Ke Za Zhi 2022; 61:291-297. [PMID: 35263970 DOI: 10.3760/cma.j.cn112138-20211011-00688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To develop an area under curve (AUC)-based nomogram to predict vancomycin-associated nephrotoxicity in critically ill patients. Methods: This retrospective cohort study included adult patients treated with vancomycin in the intensive care unit at a tertiary teaching hospital from January 2015 to December 2017. Baseline clinical characteristics before vancomycin treatment and pharmacokinetic parameters were collected to establish a prediction model of nephrotoxicity. Univariate analysis was used to screen variables, and multivariate logistic regression analysis was used to establish the prediction model and nomogram. Results: A total of 159 patients met the inclusion criteria, sixty-four were included in the final analysis. Sixteen patients (25%, 16/64) developed vancomycin-associated nephrotoxicity. The following variables were incorporated into the prediction model: vancomycin AUC, estimated glomerular filtration rate (GFR), and combined nephrotoxic drugs. The following equation was established to calculate the probability of nephrotoxicity: logit (P)=-4.83+0.009×AUC-2.87×1 (if GFR>60 ml/min)+2.53×1 (if number of combined nephrotoxic drugs≥2). A nomogram was generated based on the equation. The receiver-operating characteristic curve demonstrated that the AUC of the prediction model was 0.927 (95%CI 0.851-1.000). The cut-off value of the probability of nephrotoxicity was 26.48%. The sensitivity and specificity were 87.5% and 87.5% respectively. Conclusion: The incidence of vancomycin-associated nephrotoxicity is high. The AUC-based nomogram can effectively predict vancomycin-associated nephrotoxicity in critically ill patients.
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Affiliation(s)
- J L Wang
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Jiangsu Provincial Key Laboratory of Critical Care Medicine, Nanjing 210009, China
| | - M Xue
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Jiangsu Provincial Key Laboratory of Critical Care Medicine, Nanjing 210009, China
| | - H F Wang
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Jiangsu Provincial Key Laboratory of Critical Care Medicine, Nanjing 210009, China
| | - L L Huang
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Jiangsu Provincial Key Laboratory of Critical Care Medicine, Nanjing 210009, China
| | - Q Li
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Jiangsu Provincial Key Laboratory of Critical Care Medicine, Nanjing 210009, China
| | - J Y Xu
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Jiangsu Provincial Key Laboratory of Critical Care Medicine, Nanjing 210009, China
| | - J F Xie
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Jiangsu Provincial Key Laboratory of Critical Care Medicine, Nanjing 210009, China
| | - Y Z Huang
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Jiangsu Provincial Key Laboratory of Critical Care Medicine, Nanjing 210009, China
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Huang LL, Zhao XJ, Mai W, He C, Fan YS. [Effect of ZhuLian's type Ⅱ inhibition needling technique on endocrine metabolism in rats with polycystic ovary syndrome and insulin resistance]. Zhen Ci Yan Jiu 2022; 47:148-153. [PMID: 35218625 DOI: 10.13702/j.1000-0607.20210259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
OBJECTIVE To observe the effect of ZhuLian's type Ⅱ inhibition needling technique on sex hormones, insulin resistance and ovarian morphology in rats with polycystic ovary syndrome (PCOS), so as to explore its mechanism on regulating endocrine and metabolic dysfunction of PCOS. METHODS Twenty-four female SD rats were randomly divided into control, model and ZhuLian acupuncture groups (n=8 in each group). The PCOS model was established by continuous gavage of letrozole combined with high-fat diet. Rats of the ZhuLian acupuncture group were stimulated at "Guanyuan"(CV4) and bilateral "Guilai"(ST29), "Zusanli"(ST36), "Sanyinjiao"(SP6), and "Fenglong"(ST40) by ZhuLian's type Ⅱ inhibition needling technique for 30 min, continuously intervented for 28 days. The body weight was measured before and after modeling and after intervention. The ovarian volume was calculated. HE staining was used to observe the changes of ovarian histology. Plasma levels of luteinizing hormone (LH), follicle stimulating hormone (FSH) and fasting insulin (FINS) were measured by ELISA. LH/FSH ratio and insulin resistance index (HOMA-IR) were calculated. RESULTS After modeling, the rats' body weight and the ovarian volume were increased (P<0.05), and the ovaries showed polycystic changes in the model group compared with the control group. And the FINS level, HOMA-IR, LH content and LH/FSH ratio were significantly increased (P<0.05), while the FSH level was decreased (P<0.05). After the intervention, the rats' body weight and ovarian volume were decreased (P<0.05), and a small number of preantral follicles and more antral follicles were observed under microscope, and the levels of LH, LH/FSH, FINS and HOMA-IR were significantly decreased (P<0.05), while FSH content was increased (P<0.05) in the ZhuLian acupuncture group than in the model group. CONCLUSION ZhuLian's type Ⅱ inhibition needling technique can improve the endocrine and metabolic disorders in PCOS rats, which may be related to the regulation of endocrine system.
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Affiliation(s)
- Li-Lin Huang
- School of Acupuncture-moxibustion and Tuina, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Xiao-Jun Zhao
- School of Acupuncture-moxibustion and Tuina, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Wei Mai
- School of Acupuncture-moxibustion and Tuina, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Cai He
- School of Acupuncture-moxibustion and Tuina, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Yu-Shan Fan
- School of Acupuncture-moxibustion and Tuina, Guangxi University of Chinese Medicine, Nanning 530200, China
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Pang RK, Fan YS, He C, Zhao XJ, Huang LL, Miao FR. [Efficacy and action mechanism of ZHU Lian inhibition type Ⅰacupuncture for acne with spleen-stomach dampness-heat]. Zhongguo Zhen Jiu 2021; 41:1236-1240. [PMID: 34762377 DOI: 10.13703/j.0255-2930.20201007-k0002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
OBJECTIVE To observe the efficacy of ZHU Lian inhibition type Ⅰ acupuncture for acne with spleen-stomach dampness-heat, and to explore its possible action mechanism. METHODS A total of 82 patients of acne with spleen-stomach dampness-heat were randomly divided into an observation group and a control group, 41 cases in each group. The patients in the control group were treated with danshentong capsules (1 g, 3 times per day) and 0.1% adapalene gel smear (once every night) for 4 weeks. The patients in the observation group were treated with ZHU Lian inhibition type Ⅰ acupuncture at Hegu (LI 4), Neiting (ST 44), Quchi (LI 11), Yangbai (GB 14), Sibai (ST 2), Qihai (CV 6), Xuehai (SP 10), Yinlingquan (SP 9) and skin lesions, once every other day, 7 times as a course of treatment, totaling for 2 courses of treatment. The skin lesion score of the global acne grading system (GAGS) and quality of life-acne (Qol-Acne) score as well as the serum levels of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) were compared between the two groups before and after treatment; the clinical efficacy were compared between the two groups, and the recurrence rate was evaluated 4 weeks after treatment. RESULTS After treatment, the skin lesion scores of GAGS in the two groups were reduced (P<0.05), and the score in the observation group was lower than that in the control group (P<0.05). After treatment, the Qol-Acne scores were increased in the two groups (P<0.05), and the score in the observation group was higher than that in the control group (P<0.05). The serum levels of TNF-αand IL-6 in the two groups were reduced after treatment (P<0.05), and those in the observation group were lower than the control group (P<0.05). The total effective rate was 95.1% (39/41) in the observation group, which was higher than 82.9% (34/41) in the control group (P<0.05). Four weeks after treatment, the recurrence rate of acne lesions was 10.3% (4/39) in the observation group, which was lower than 32.4% (11/34) in the control group (P<0.05). CONCLUSION ZHU Lian inhibition type Ⅰ acupuncture is effective for acne with spleen-stomach dampness-heat, and the recurrence rate is low. Its mechanism may be related to the reduction of serum inflammatory factor TNF-α and IL-6.
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Affiliation(s)
- Rui-Kang Pang
- College of Acupuncture-Moxibustion and Tuina, Guangxi University of CM, Nanning 530001, China
| | - Yu-Shan Fan
- Ren'ai Branch of First Affiliated Hospital, Guangxi University of CM
| | - Cai He
- College of Acupuncture-Moxibustion and Tuina, Guangxi University of CM, Nanning 530001, China
| | - Xiao-Jun Zhao
- College of Acupuncture-Moxibustion and Tuina, Guangxi University of CM, Nanning 530001, China
| | - Li-Lin Huang
- College of Acupuncture-Moxibustion and Tuina, Guangxi University of CM, Nanning 530001, China
| | - Fu-Rui Miao
- College of Acupuncture-Moxibustion and Tuina, Guangxi University of CM, Nanning 530001, China
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Mai W, Fan YS, Miao FR, He C, Huang LL, Zhao XJ, Nie YJ, Pang RK. [Effect of electroacupuncture combined with Zhuang-medicine-thread moxibustion on silent information regulator-1/nuclear factor κB signaling pathway in gastric antrum of diabetic gastroparesis rats]. Zhen Ci Yan Jiu 2021; 46:837-844. [PMID: 34698457 DOI: 10.13702/j.1000-0607.200942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
OBJECTIVE To observe the effect of electroacupuncture (EA) combined with Zhuang-medicine-thread moxibustion on silent information regulator-1 (SIRT1)/nuclear factor kappa B (NF-κB) signal pathway and inflammatory factor expression in gastric antrum tissue of diabetic gastroparesis (DGP) rats, so as to explore its mechanism underlying improvement of DGP. METHODS Male SD rats were randomly divided into normal, model, medication, EA, Zhuang-medicine-thread moxibustion (moxibustion) and EA+moxibustion groups (n=12 per group). The DGP model was established by intraperitoneal injection of streptozotocin (STZ). Rats of the medication group were treated by gavage of 0.15 mg/mL mosapride citrate suspension. EA (10 Hz /50 Hz, 2 mA) or moxibustion (3 cones) or EA+moxibustion was applied to "Zhongwan"(CV12), bilateral "Neiguan"(PC6) and bilateral "Sanyinjiao"(SP6) of the related group for 20 min, once a day for 3 weeks. Blood glucose, gastric emptying rate and intestinal propulsion rate were measured. The levels of serum interleukin (IL)-6, IL-8, IL-10 and tumor necrosis factor-α(TNF-α) were detected by ELISA; the phosphorylation level of the phosphorylated inhibitor of nuclear factor κBα inhibitor (pIκ-Bα), the protein and mRNA expression of NF-κB p65 and SIRT1 in the gastric antrum tissue were detected by Western blot and real-time quantifitative PCR, respectively. RESULTS (1) Compared with the normal group, the levels of blood glucose, serum IL-6, IL-8, TNF-α, and gastric pIκ-Bα and NF-κB p65 protein and mRNA expressions were significantly increased (P<0.01), and the gastric emptying rate, intestinal propulsion rate, serum IL-10 level, and SIRT1 protein and mRNA expressions were considerably decreased in the model group (P<0.01). (2) In contrast to the model group, the blood glucose in the EA, moxibustion and EA+moxibustion groups, serum IL-6, IL-8 and TNF-α levels in the 4 treatment groups, as well as NF-κB p65 protein expression in the medication and EA+moxibustion groups, and NF-κB p65 mRNA expression and pIκ-Bα protein and mRNA expression in the 4 treatment groups were significantly decreased (P<0.01, P<0.05); while the gastric emptying rate and intestinal propulsive rate and IL-10 content in the 4 treatment groups, and SIRT1 protein and mRNA expression in the medication and EA+moxibustion groups were obviously increased (P<0.05, P<0.01). (3) The effects of EA+moxibustion were significantly superior to those of simple EA and moxibustion in increasing gastric emptying rate, IL-10, SIRT1 protein expression (P<0.05, P<0.01), and in lowering IL-8 and TNF-α contents, pIκ-Bα protein and mRNA expression and NF-κB p65 mRNA expression (P<0.05, P<0.01). No significant differences were found among the 4 intervention groups in promoting the intestinal propulsive rate and among the EA, moxibustion and EA+moxibustion groups in lowering blood glucose (P>0.05). CONCLUSION EA combined with Zhuang-medicine-thread moxibustion can effectively reduce the level of serum inflammatory factors and regulate SIRT1/NF-κB signal pathway in DGP rats, which may contribute to its function in improving gastrointestinal movement.
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Affiliation(s)
- Wei Mai
- Graduate School, Guangxi University of Chinese Medicine, Nanning 530001, China
| | - Yu-Shan Fan
- College of Acupuncture-moxibustion and Tuina, Guangxi University of Chinese Medicine, Nanning 530001, China
| | - Fu-Rui Miao
- Graduate School, Guangxi University of Chinese Medicine, Nanning 530001, China
| | - Cai He
- Graduate School, Guangxi University of Chinese Medicine, Nanning 530001, China
| | - Li-Lin Huang
- Graduate School, Guangxi University of Chinese Medicine, Nanning 530001, China
| | - Xiao-Jun Zhao
- Graduate School, Guangxi University of Chinese Medicine, Nanning 530001, China
| | - Ying-Jie Nie
- Graduate School, Guangxi University of Chinese Medicine, Nanning 530001, China
| | - Rui-Kang Pang
- Graduate School, Guangxi University of Chinese Medicine, Nanning 530001, China
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Huang LL, Li Q, Chen SJ, Xu NP, Wu H, Liu H, Yu B. [A case of aortic dissection in children]. Zhonghua Er Ke Za Zhi 2020; 58:1015-1017. [PMID: 33256326 DOI: 10.3760/cma.j.cn112140-20200423-00423] [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: 06/12/2023]
Affiliation(s)
- L L Huang
- Department of Emergency Medicine, Jiangxi Children's Hospital, Nanchang 330006, China
| | - Q Li
- Department of Emergency Medicine, Jiangxi Children's Hospital, Nanchang 330006, China
| | - S J Chen
- Department of Cardiac Ultrasound, Jiangxi Children's Hospital, Nanchang 330006, China
| | - N P Xu
- Department of Emergency Medicine, Jiangxi Children's Hospital, Nanchang 330006, China
| | - H Wu
- Department of Emergency Medicine, Jiangxi Children's Hospital, Nanchang 330006, China
| | - H Liu
- Department of Emergency Medicine, Jiangxi Children's Hospital, Nanchang 330006, China
| | - B Yu
- Department of Cardiac Ultrasound, Jiangxi Children's Hospital, Nanchang 330006, China
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Xie ZQ, Zhao DY, Huang HT, Gou JB, Zhang W, Yang YL, Huang LL, Wang YX, Wang X, Xu LF, Zhu T, Xia SL. [ A phase Ⅲ clinical trial study on the safety and immunogenicity of ACYW135 group meningococcal conjugate vaccine inoculated in 3 month old infants]. Zhonghua Yu Fang Yi Xue Za Zhi 2020; 54:947-952. [PMID: 32907283 DOI: 10.3760/cma.j.cn112150-20200520-00758] [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: The aim of this study was to evaluate the safety and immunogenicity of the first domestic ACYW135 meningococcal conjugate vaccine and a control vaccine named AC group meningococcal conjugate vaccine for 3 months (90-119 days) infants. Methods: From February 2017 to June 2018, a randomized, blinded, and similar vaccine-controlled clinical trial design was adopted at the Henan Vaccine Clinical Research Base. The subjects were 3 months old healthy infants, a total of 720, based on a 1∶1 ratio. The random allocation table for entry was randomly assigned to the experimental group and the control group. According to the 3, 4, and 5 month-old vaccination procedures, the subjects were vaccinated with test vaccine (ACYW135 group meningococcal conjugate vaccine) and control vaccine (group A group C meningococcal polysaccharide conjugate vaccine), of which 720 were given the first dose, 696 were given the second dose (test group: 346; control group: 350), and 692 were given the third dose (test group: 344; Control group: 348). Results: The overall adverse reaction rate of the test vaccine was 21.90% (230 cases), which was lower than the 32.04% (339 cases) of the control vaccine (P<0.001). The incidence of systemic adverse reactions was 19.52% (205 cases), which was lower than that of the control vaccine (27.69%) (293 cases) (P<0.001). The local adverse reaction rate was 3.04% (32 cases), which was lower than the control group (7.84%) (83 cases) (P<0.001). The graded adverse reaction test vaccine was 0.57% (6 cases), which was lower than the control group of 2.36% (25 cases) (P<0.001). The positive conversion rate of anti-bacterial serum antibodies showed that there was no significant difference between the test vaccine group A (91.42%), C (88.76%) and the control vaccine (92.92%) (87.02%) (P>0.05). Group Y and W135 was 88.17% (298 cases), 99.41% (336 cases), respectively. The GMT results showed that the test vaccine group A was 56.24, the control vaccine was 57.43 (P>0.05); the group C test vaccine (43.53) was higher than the control group (27.28) (P<0.001). The group Y and W135 are 89.22 and 140.66, respectively. Among them, the proportion of the group C GMT antibody ≥ 1∶128 for test vaccine (31.07%, 105 cases) was higher than the control vaccine (16.22%, 55 cases) (P<0.001). Conclusion: ACYW135 group meningococcal conjugate vaccine has more safety and immunogenicity after application to 3 month old infants.
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Affiliation(s)
- Z Q Xie
- Center of Vaccine Clinical Trial, Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - D Y Zhao
- Center of Vaccine Clinical Trial, Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - H T Huang
- CanSino Biologics Inc., Tianjin 300457, China
| | - J B Gou
- CanSino Biologics Inc., Tianjin 300457, China
| | - W Zhang
- Center of Vaccine Clinical Trial, Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - Y L Yang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - L L Huang
- Center of Vaccine Clinical Trial, Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - Y X Wang
- Center of Vaccine Clinical Trial, Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
| | - X Wang
- CanSino Biologics Inc., Tianjin 300457, China
| | - L F Xu
- CanSino Biologics Inc., Tianjin 300457, China
| | - T Zhu
- CanSino Biologics Inc., Tianjin 300457, China
| | - S L Xia
- Center of Vaccine Clinical Trial, Henan Center for Disease Control and Prevention, Zhengzhou 450016, China
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Shan XX, Huang LL, Ding W, Li CY, Cui XY, Qian YJ, Guan YY. [SWOT analysis of schistosomiasis elimination in Laos]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020; 32:414-418. [PMID: 32935520 DOI: 10.16250/j.32.1374.2020049] [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: 11/27/2022]
Abstract
OBJECTIVE To analyze the advantages, disadvantages, opportunities and challenges for schistosomiasis elimination in Laos, so as to propose the corresponding healthy policies and suggestions. METHODS A SWOT analysis was performed to analyze the strength, weakness, opportunity and threat for the schistosomiasis elimination program in Laos, and the corresponding policy suggestions were proposed. RESULTS The national schistosomiasis elimination program of Laos receives governmental emphases and great supports. A strategy based on mass drug administration was proposed and a sentinel site-bases surveillance system has been built for schistosomiasis elimination in Laos; however, there are several challenges for the national schistosomiasis elimination program in Laos, including insufficient financial supports, inadequate professional capability, weak schistosomiasis control awareness in community populations and difficulty in vector control. CONCLUSIONS Persistent governmental leadership, increasing financial supports, strengthening professional team building and improving schistosomiasis control awareness in community populations are required to facilitate the progress towards schistosomiasis elimination in Laos.
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Affiliation(s)
- X X Shan
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; WHO Collaborating Center for Tropical Diseases; Chinese Center for Tropical Diseases Research; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai 200025, China
| | - L L Huang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; WHO Collaborating Center for Tropical Diseases; Chinese Center for Tropical Diseases Research; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai 200025, China
| | - W Ding
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; WHO Collaborating Center for Tropical Diseases; Chinese Center for Tropical Diseases Research; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai 200025, China
| | - C Y Li
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; WHO Collaborating Center for Tropical Diseases; Chinese Center for Tropical Diseases Research; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai 200025, China
| | - X Y Cui
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; WHO Collaborating Center for Tropical Diseases; Chinese Center for Tropical Diseases Research; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai 200025, China
| | - Y J Qian
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; WHO Collaborating Center for Tropical Diseases; Chinese Center for Tropical Diseases Research; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai 200025, China
| | - Y Y Guan
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; WHO Collaborating Center for Tropical Diseases; Chinese Center for Tropical Diseases Research; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai 200025, China
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Chen HJ, Wang PX, Huang LL, Zhang HY, Chen XG, Zhang Q. [Overexpression of protein phosphatase 2 regulatory subunit B''α gene effect on proliferation and invasion of hepatoma cells]. Zhonghua Gan Zang Bing Za Zhi 2020; 27:872-878. [PMID: 31941242 DOI: 10.3760/cma.j.issn.1007-3418.2019.11.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Objective: To study the overexpression of protein phosphatase 2 regulatory subunit B''α gene effects on the proliferation and invasion of hepatoma cells. Methods: Immunohistochemistry method was used to analyze the expression of PPP2R3A in cancerous and paracancerous tissues. Hepatocellular carcinoma cell lines (Huh-7 and HepG2) with stably overexpressing PPP2R3A were constructed by lentiviral vector. Biological behavioral transition in hepatocellular carcinoma cell proliferation, cell cycle, apoptosis, invasion and metastasis were detected by cell counting kit-8 assay (CCK-8), flow cytometry, and transwell assay. A subcutaneous nude tumor mice model was constructed to validate the growth of hepatoma cells. Two independent sample t-tests were used to compare the groups. Results: The expression of PPP2R3A gene in human hepatocarcinoma tissues was higher than paracancerous tissues. The absorbance (A value) of hepatoma cells was increased (P < 0.05) after overexpression of PPP2R3A gene. The transition from G1-to-S phase was significantly increased i.e., the G1 phase of the cell cycle was reduced (Huh-7: t = 3.04, P = 0.0384; HepG2: t = 4.06, P = 0.0153), while the S phase was increased (Huh-7: t = 3.47, P = 0.0255; HepG2: t = 4.46, P = 0.0112). Early apoptotic rate was decreased (Huh-7: t = 7.34, P = 0.0018; HepG2: t = 4.06, P = 0.0153). The number of Huh-7 cells migrating to the lower chamber was increased (t = 3.18, P = 0.0334), and after the use of matrigel the number of cells reaching to the lower chamber was also increased (t = 2.84, P = 0.0464). The results of animal experiments showed that the subcutaneous tumor growth (t = 4.31, P = 0.0035) was significantly overexpressed in nude mice group. The results of Western blot showed that the expression of PARP and P53 protein in the spliced forms decreased, while the accumulation of β-catenin protein in the liver cancer cells was increased. Conclusion: Overexpressed PPP2R3A gene may promote proliferation, migration and invasion ability, inhibit apoptosis, induce G1/S phase transition, and participate in the biological behavior of hepatoma cells.
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Affiliation(s)
- H J Chen
- Clinical College of General Hospital of Chinese People's Armed Police Force, Anhui Medical University, Beijing 100039, China;the Third Medical Centre, Chinese PLA (People's Liberation Army) General Hospital, Beijing 100039, China
| | - P X Wang
- Henan Children's Hospital, Zhengzhou 450018, China
| | - L L Huang
- the Third Medical Centre, Chinese PLA (People's Liberation Army) General Hospital, Beijing 100039, China
| | - H Y Zhang
- the Third Medical Centre, Chinese PLA (People's Liberation Army) General Hospital, Beijing 100039, China
| | - X G Chen
- the Third Medical Centre, Chinese PLA (People's Liberation Army) General Hospital, Beijing 100039, China
| | - Q Zhang
- Clinical College of General Hospital of Chinese People's Armed Police Force, Anhui Medical University, Beijing 100039, China;the Third Medical Centre, Chinese PLA (People's Liberation Army) General Hospital, Beijing 100039, China
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Huang LL, Zhao Y, Wei YY, Chen F. [How to adjust confounders in studies on observational comparative effectiveness: (3) approaches on sensitivity analysis for confounder adjustment]. Zhonghua Liu Xing Bing Xue Za Zhi 2019; 40:1645-1649. [PMID: 32062931 DOI: 10.3760/cma.j.issn.0254-6450.2019.12.026] [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
Confounders are difficult to avoid in studies on observational comparative effectiveness. It is often unclear whether the confounders have been completely eliminated after controlling the measured or unmeasured potential confounding effects or if sensitivity analysis is needed when using the specific statistical methods, under given circumstances. This manuscript summarizes and evaluates the confounding sensitivity analysis methods. Based on different studies, sensitivity analyses need to use different approaches. The traditional sensitivity analysis can be applied for the measured confounders. Currently, the relatively systematic sensitivity analyses for unmeasured confounders would include confounding function, bounding factor and propensity score calibration. Additionally, more investigations are associated with Monte Carlo and Bayesian sensitivity analysis. Reliability of the research conclusion thus may largely be improved when the sensitivity analysis results are consistent with the main analysis.
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Affiliation(s)
- L L Huang
- Department of Biostatistics, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Y Zhao
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Y Y Wei
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - F Chen
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
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Huang LL, Li RH, Li J, Chen HJ, Peng SM. [Association of YKL-40 in bronchoalveolar lavage fluid with airway damage in children with Mycoplasma pneumoniae pneumonia]. Zhongguo Dang Dai Er Ke Za Zhi 2019; 21:1188-1192. [PMID: 31874657 PMCID: PMC7389011 DOI: 10.7499/j.issn.1008-8830.2019.12.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 09/27/2019] [Indexed: 06/10/2023]
Abstract
OBJECTIVE To investigate the association of YKL-40 in bronchoalveolar lavage fluid (BALF) with airway damage in children with Mycoplasma pneumoniae pneumonia (MPP). METHODS A total of 60 children with MPP who were admitted to the hospital were enrolled as the MPP group, and 12 children with bronchial foreign bodies were enrolled as the control group. According to the imaging findings, the MPP group was further divided into 3 subgroups: pulmonary patchy shadow (n=34), pulmonary consolidation (n=19) and pulmonary ground-glass opacity (n=7). According to the bronchoscopic findings, the MPP group was further divided into 3 subgroups: mucosal congestion/edema (n=38), mucous secretion (n=18) and plastic bronchitis (n=4). The clinical manifestations and laboratory characteristics of the children with MPP were analyzed, the expression of YKL-40 in BALF was measured. RESULTS The MPP group had significantly higher levels of serum lactate dehydrogenase and BALF YKL-40 than the control group (P<0.05). The pulmonary consolidation subgroup had significantly higher levels of serum C-reactive protein and lactate dehydrogenase than the pulmonary patchy shadow subgroup (P<0.05), and the pulmonary consolidation and pulmonary ground-glass opacity subgroups had a significantly higher level of BALF YKL-40 than the pulmonary patchy shadow subgroup (P<0.05). The plastic bronchitis subgroup had a significantly higher level of BALF YKL-40 than the mucous secretion and mucosal congestion/edema subgroups (P<0.05). The mucous secretion and plastic bronchitis subgroups had a significantly higher proportion of children with shortness of breath than the mucosal congestion/edema subgroup (P<0.05). The plastic bronchitis subgroup had significantly higher serum levels of C-reactive protein and lactate dehydrogenase than the mucosal congestion/edema subgroup (P<0.05). CONCLUSIONS The level of BALF YKL-40 is associated with airway damage and disease severity in children with MPP.
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Affiliation(s)
- Li-Lin Huang
- Department of Pediatrics, Guangdong Women and Children's Hospital, Guangzhou 510010, China.
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Li JH, Tao ZM, Ruan YM, Huang LL, Duan CW, Wang Z. [Analysis of factors affecting the noise-induced high frequency hearing loss of male workers in a vehicle manufacturing enterprise]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2019; 37:760-764. [PMID: 31726507 DOI: 10.3760/cma.j.issn.1001-9391.2019.10.009] [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 analyze the relationships between the exposure of occupational noise and the occurrence of noise-induced high frequency hearing loss in automobile manufacturing industry. Methods: From June to November 2017, 1579 male workers were selected for exposure to noise hazards in the automobile manufacturing industry in Guangzhou for more than one year (including one year) using the convenient sampling method. According to the hearing test results, 276 people in the high frequency hearing loss group and 1303 in the normal hearing group were surveyed, occupational health tests were conducted, and the noise intensity in the workplace was measured. The cumulative noise exposure (CNE) was calculated. The relationship between shift work and high frequency hearing loss of noise work is analyzed. Results: Compared with the normal hearing group, the noise exposure intensity, age, length of service, marital status, working system, and physical exercise of the high frequency hearing loss group were statistically significant (P<0.05). Through logistic regression analysis, after correcting the effects of organic solvent contact, marital status, and physical exercise, CNE, age, and shift operations (double-shift operations, three-shift operations) are the risk factors for high frequency hearing loss to occur. Conclusion: The risk of hearing loss of workers exposed to noise in the whole vehicle manufacturing industry may be related to CNE, age, and shift work. Two-shift and three-shift work are possible risk factors for noise-induced high frequency hearing loss.
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Affiliation(s)
- J H Li
- Guangzhou Twelfth People's Hospital, Guangzhou Medical University, Guangzhou 510620, China;Jiangmen Institute of Occupational Disease Prevention and Control, Jiangmen 529020, China
| | - Z M Tao
- Sanxiang Hospital of Zhongshan, Zhongshan 528463, China
| | - Y M Ruan
- Guangzhou Twelfth People's Hospital, Guangzhou Medical University, Guangzhou 510620, China
| | - L L Huang
- Guangzhou Occupational Disease Prevention and Treatment Hospital, Guangzhou 510620, China
| | - C W Duan
- Guangzhou Occupational Disease Prevention and Treatment Hospital, Guangzhou 510620, China
| | - Z Wang
- Guangzhou Twelfth People's Hospital, Guangzhou Medical University, Guangzhou 510620, China;Guangzhou Occupational Disease Prevention and Treatment Hospital, Guangzhou 510620, China
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Huang LL, Wei YY, Chen F. [Confounder adjustment in observational comparative effectiveness researches: (1) statistical adjustment approaches for measured confounder]. Zhonghua Liu Xing Bing Xue Za Zhi 2019; 40:1304-1309. [PMID: 31658535 DOI: 10.3760/cma.j.issn.0254-6450.2019.10.024] [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
Observational comparative effectiveness studies have been widely conducted to provide evidence on additional effectiveness and to support randomized controlled findings in research. Although this type of study becomes more important over time, challenges related to the common biases which stemmed from confounders, are difficult to control. This manuscript summarizes some statistical methods used on adjusting measured confounders that often noticed in research, regarding the observational comparative effectiveness. Useful traditional methods would include stratified analysis, paired analysis, covariate model and multivariable model, etc.. Unconventional adjustment approaches such as propensity score and disease risk score methods may also be used in studies, for matching, stratification and adjustment. A good study design should be able to control confounders. The limitations of all the post hoc statistical adjustment methods should also be fully understood before being appropriately applied in practical events.
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Affiliation(s)
- L L Huang
- Department of Biostatistics, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Y Y Wei
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - F Chen
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
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Liu YM, Xiao LW, Zhou H, Xie CJ, Huang LL, Liu YM. [An analysis of work-related musculoskeletal disorders and ergonomic loads in male welders in shipbuilding industry]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2019; 37:201-206. [PMID: 31189242 DOI: 10.3760/cma.j.issn.1001-9391.2019.03.009] [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 prevalence of work-related musculoskeletal disorders (WMSDs) in male welders in different work areas of shipbuilding industry based on their operational working position and body position characteristics and to analyze the operational positions and ergonomic loads. Methods: In February 2017, 412 male welders from the hull and block work areas of a large ship factory were selected by stratified sampling. The prevalence and effects of WMSDs within a year were investigated using the Nordic Musculoskeletal Disorders Questionnaire, and a rapid exposure checklist was used to obtain the ergonomic load index by comprehensive scoring; the exposure-response relationship between the ergonomic loads and WMSDs symptoms of subjects in the hull and block work areas was evaluated. Results: Among the male welders working in the hull work area of shipbuilding industry, WMSDs occurred more commonly in the neck, lower back/waist, and legs, accounting for 53.16% (126/237) , 51.90% (123/237) , and 41.77% (99/237) , respectively; among those working in the block work area, WMSDs occurred more commonly in the lower back/waist, wrist, and legs, accounting for 52.57% (92/175) , 49.14% (86/175) , and 45.14% (79/175) , respectively. There were significant differences in the distribution of cases of pain within the last 7 days and one month, pain lasting more than one month, or absence from work due to pain within a year in the four positions between the two work areas (P<0.05). In the hull work area, high and extremely high exposure levels were mainly seen in the neck, lower back/waist, and legs, accounting for 76.79%(182/237), 69.20%(164/237), and 59.49%(141/237), respectively; in the block work area, high and extremely high exposure levels were mainly seen in the lower back/waist, wrist, and legs, accounting for 77.71%(136/175), 50.29% (88/175), and 46.29% (81/175), respectively. The detection rates of WMSDs in these four positions significantly increased as the exposure levels rose (P<0.01). Conclusion: The WMSDs of male welders working in the hull and block work areas of shipbuilding industry occurs more commonly in the lower back/waist and legs. The risk of WMSDs symptoms increases with the rise of ergonomic load.
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Affiliation(s)
- Y M Liu
- Guangzhou twelfth People's Hospital, Guangzhou Key Medical Disciplines and Specialities of Occupational Health Surveillance, The Institute of Occupational and Environmental Health, Guangzhou 510620, China
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Wang JL, Wang HF, Shi MJ, Xu JY, Huang LL, Li Q, Liu SQ, Huang YZ. [The influencing factors achieving target vancomycin trough level in critically ill patients]. Zhonghua Nei Ke Za Zhi 2019; 58:572-576. [PMID: 31365978 DOI: 10.3760/cma.j.issn.0578-1426.2019.08.005] [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 assess the rate achieving the target vancomycin trough level (VTL) and its influencing factors in critically ill patients. Methods: The retrospective observational study recruited adult patients treated with intravenous vancomycin in the intensive care unit (ICU) at Zhongda Hospital from January 2015 to December 2017. Serum VTL was tested at steady state. Patients' demographics, the sites of infection, microbial culture results, the severity of illness, laboratory data and vancomycin regimen were obtained at the baseline. The rate achieving target VTL (15-20 mg/L) was analyzed based on renal function. Linear regression was performed to determine the influencing factors of VTL. Results: A total of 85 patients were enrolled, among whom only 23.5% (20/85) achieved the target VTL. In patients with normal renal function, the achieving rate was only 11.4% (4/35), and 80.0% (28/35) was lower than the target trough level multiple linear regression analysis showed that procalcitonin (PCT), estimated glomerular filtration rate (eGFR) and acute physiology and chronic health disease classification system Ⅱ (APACHE Ⅱ) score were independent factors associated with VTL. Conclusion: Achieving target VTL in critically ill patients is not satisfactory. Further study to optimize the administration is needed to facilitate prompt attainment of target VTL.
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Affiliation(s)
- J L Wang
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, China
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21
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Huang LL, Chen F. [The propensity score method and it's application]. Zhonghua Yu Fang Yi Xue Za Zhi 2019; 53:752-756. [PMID: 31288349 DOI: 10.3760/cma.j.issn.0253-9624.2019.07.017] [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
Propensity score method, as an analytical strategy for adjusting multiple covariates, has been widely used in observational comparative effectiveness research. This paper introduces this method covered basic principles, case illustration and software implementation, in order to help readers understand propensity score method, apply it correctly in their researches, improve the efficiency of data utilization, and enhance the level of statistical analysis.
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Affiliation(s)
- L L Huang
- Department of Biostatistics, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - F Chen
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China
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Hu Y, Liu Q, Zhou XF, Huang LL, Sun H. [Screening of optimal siRNA interference sequence of CIT gene and its inhibition expression in hepatoma SK-Hep-1]. Zhonghua Gan Zang Bing Za Zhi 2019; 27:281-285. [PMID: 31082339 DOI: 10.3760/cma.j.issn.1007-3418.2019.04.008] [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 construct and screen optimal siRNA interference sequence of CIT gene and to detect its interference efficiency as well as proliferation effect in human hepatoma cell line SK-Hep-1. Methods: Three siRNA target spots were designed and synthesized according to the CIT gene sequence. SK-Hep-1 HCC cells were transfected by liposome transfection. The knockdown efficiency of the target CIT gene was detected by real-time PCR and Western blot. Expressional change of CIT in SK-Hep-1 cells after 48 hours of siRNA interference were observed by immunohistochemistry and confocal microscopy. The proliferation of SK-Hep-1 cells after 48 hours of siRNA interference was detected by EdU cell proliferation assay. A t-test was used to compare the mean of two samples, and one-way ANOVA was used to compare the mean of multiple samples. Results: Western blot results showed that the three interference sequences were targeted at different target spots. The expression level of CIT protein in KD-1,-2, and-3 groups were decreased (P < 0.01) than control, while the protein expression level of KD1 group was the lowest. Real-time PCR results showed that compared with the control group, the expression level of CIT mRNA in KD-1, -2, and -3 groups decreased (P < 0.01), while that in KD1 group was the lowest. Laser confocal microscopy also confirmed that the morphological expression of CIT attenuated significantly after transfection with siRNA. The results of EdU proliferation assay showed that siRNA transfected with CIT significantly attenuated the proliferation of SK-Hep-1 hepatoma cells (P < 0.05). Conclusion: The successful construction and screening of siRNA fragments can effectively inhibit the expression and proliferation of CIT gene in hepatoma SK-Hep-1.
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Affiliation(s)
- Y Hu
- Key Laboratory of Molecular Biology for Infectious Diseases, Ministry of Education and Department of Infectious Diseases, Chongqing Medical University, Chongqing 400016, China
| | - Q Liu
- Key Laboratory of Molecular Biology for Infectious Diseases, Ministry of Education and Department of Infectious Diseases, Chongqing Medical University, Chongqing 400016, China
| | - X F Zhou
- Key Laboratory of Molecular Biology for Infectious Diseases, Ministry of Education and Department of Infectious Diseases, Chongqing Medical University, Chongqing 400016, China
| | - L L Huang
- Department of Nephrology, the Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, China
| | - H Sun
- Key Laboratory of Molecular Biology for Infectious Diseases, Ministry of Education and Department of Infectious Diseases, Chongqing Medical University, Chongqing 400016, China
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Huang LL, Xu LL, Ge WY, Li H, Wang ZH, Wu HB. [Clinicopathologic features of meningioma with rhabdoid features but lacking other histologic patterns of malignancy: report of two cases]. Zhonghua Bing Li Xue Za Zhi 2018; 47:473-475. [PMID: 29886598 DOI: 10.3760/cma.j.issn.0529-5807.2018.06.020] [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: 06/08/2023]
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Li LL, Huang LL, Miu SJ, Zhang H. [Local combined with systemic glucocorticoid treatment of young and middle-aged patients with severe and profound hearing loss]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 32:533-536. [PMID: 29798086 DOI: 10.13201/j.issn.1001-1781.2018.07.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Indexed: 11/12/2022]
Abstract
Objective:To investigate the clinical effect of local combined with systemic glucocorticoid injection on young and middle-aged patients with severe and profound hearing loss. Method:Ninety-three cases of young and middle-aged patients with severe and profound hearing loss admitted to our hospital from May 2013 to May 2017 were retrospectively analyzed. Patients were divided into two groups according to the different treatment. Forty-six cases in control group were treated with systemic injection of glucocorticoids.Forty-seven cases in observation group were treated with local administration combined with systemic glucocorticoid therapy. The efficacy, changes of average hearing threshold and the incidence of adverse reactions were evaluated.Result:The total effective rate in the observation group was 68.09%, which was significantly higher than that in the control group (45.65%,P<0.05).After treatment, the average hearing thresholds in the observation groups of 0.5,1.0,2.0 and 4.0kHz were(35.77±13.28)dB HL,(39.71±14.09)dB HL, (32.99±10.73)dB HL and (30.17±9.29)dB HL respectively,which were significantly higher than that in the control group(26.30±14.03)dB HL,(25.14±13.28)dB HL,(20.54±9.27)dB HL,and (20.98±8.71)dB HL(P<0.05).Among all the patients received systemic injection of dexamethasone sodium phosphate injection,there was no other complications were found except for one patient whose blood pressure instability was relieved after treatment stopping. In the observation group, intratympanic methylprednisolone sodium succinate did not cause serious complications such as tympanic cavity infection and perforation of the tympanic membrane on the basis of systemic injection.While in the observation group,one case complained of earache and one case complained of a slight burning sensation in the ear, and both of them eased after rest.Conclusion:Local combined with systemic glucocorticoid treatment of young and middle-aged patients with severe and profound hearing loss can significantly improve the efficiency and increase the average hearing threshold changes at 0.5,1.0,2.0 and 4.0 kHz,and there was no serious adverse reactions.
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Affiliation(s)
- L L Li
- Department of Otolaryngology, Suzhou Kowloon Hospital, School of Medicine, Shanghai Jiaotong University, Suzhou, 215000, China
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Cao J, Liu XM, Huang LL, Wang L, Jiao XF, Huo LJ. SUMO2 modification of Aurora B and its impact on follicular development and atresia in the mouse ovary. Int J Mol Med 2018; 41:3115-3126. [PMID: 29512695 PMCID: PMC5881745 DOI: 10.3892/ijmm.2018.3541] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Accepted: 12/29/2017] [Indexed: 11/06/2022] Open
Abstract
In the mammalian ovary, >99% follicles fail to ovulate due to apoptosis in granulosa cells. Aurora B, a core subunit enzyme of the chromosomal passenger complex, exerts a crucial role in microtubule‑kinetochore attachment, and has been reported to be modified by small ubiquitin‑related modifier (SUMO) proteins. However, the details of how Aurora B and its SUMOylation impact on follicular development have yet to be fully elucidated. The aim of the present study was to explore the roles, and possible molecular mechanism, of Aurora B and its SUMOylation in the granulosa cells of the mouse follicle. It was revealed that the protein level of Aurora B increased with follicular development and the growth of the granulosa cells. Aurora B impacted follicular development and atresia through mediating the p38 mitogen‑activated protein kinase and FasL/Fas pathways, and caused the downregulation of cyclin‑dependent kinase 4, proliferating cell nuclear antigen, Bcl‑2, and upregulation of caspases‑3 and ‑8 to modulate the viability of the granulosa cells. In addition, Aurora B undergoes modification by SUMO2, but not by SUMO1, in vivo and in vitro, and Lys‑207 is a major modification site. SUMOylation modulates follicular development through an increase in Aurora B localization in the nucleus, and by stabilizing the protein level of Aurora B and keeping the viability of the granulosa cells. Taken together, Aurora B and its SUMOylation are important for follicular development and atresia in the ovaries of mice.
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Affiliation(s)
- Jing Cao
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Education Ministry of China, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, P.R. China
| | - Xiao-Ming Liu
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Education Ministry of China, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, P.R. China
| | - Li-Lin Huang
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Education Ministry of China, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, P.R. China
| | - Li Wang
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Education Ministry of China, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, P.R. China
| | - Xiao-Fei Jiao
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Education Ministry of China, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, P.R. China
| | - Li-Jun Huo
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Education Ministry of China, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, P.R. China
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Qian MR, Wang QY, Yang H, Sun GZ, Ke XB, Huang LL, Gao JD, Yang JJ, Yang B. Diffusion-limited PBPK model for predicting pulmonary pharmacokinetics of florfenicol in pig. J Vet Pharmacol Ther 2017; 40:e30-e38. [PMID: 28568482 DOI: 10.1111/jvp.12419] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 04/19/2017] [Indexed: 11/26/2022]
Abstract
For most bacterial lung infections, the concentration of unbound antimicrobial agent in lung interstitial fluid has been thought to be responsible for antimicrobial efficacy. In this study, a diffusion-limited physiologically based pharmacokinetic (PBPK) model was developed to predict the pulmonary pharmacokinetics of florfenicol (FF) in pigs. The model included separate compartments corresponding to blood, diffusion-limited lung, flow-limited muscle, liver, and kidney and an extra compartment representing the remaining carcass. The absorption rate constant and renal and hepatic clearance of FF were determined in vivo. Other parameters were taken from the literature or optimized based on existing pharmacokinetic data. All mathematical operations during the development of the model were performed using acslXtreme version 3.0.2.1 (Aegis Technologies Group, Inc., Huntsville, AL, USA). The model accurately predicted the concentration-time courses of FF in lung interstitial fluid, serum, and plasma following different dosing schedules, except at the dose of 15 mg/kg. When compared with the tissue residue data, the model generally underestimated the FF concentration at the injection site, whereas it gave good predictions of FF concentrations in lung, liver, and kidney at early time points. The model predictions provide a scientific basis for the dosage regimen design of FF.
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Affiliation(s)
- M R Qian
- State Key Laboratory Breeding Base for Zhejiang Sustainable Plant Pest Control; Institute of Quality and Standard for Agro-Products, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Q Y Wang
- Wuhan Agricultural School, Wuhan, China
| | - H Yang
- State Key Laboratory Breeding Base for Zhejiang Sustainable Plant Pest Control; Institute of Quality and Standard for Agro-Products, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - G Z Sun
- Hubei Engineering Research Center of Viral Vector, Wuhan Institute of Bioengineering, Wuhan, China
| | - X B Ke
- Hubei Engineering Research Center of Viral Vector, Wuhan Institute of Bioengineering, Wuhan, China
| | - L L Huang
- National Reference Laboratory of Veterinary Drug Residues/MOA Key Laboratory of Food Safety Evaluation, Huazhong Agricultural University, Wuhan, China
| | - J D Gao
- Wuhan Royal Veterinary Hospital, Wuhan, China
| | - J J Yang
- Hubei Engineering Research Center of Viral Vector, Wuhan Institute of Bioengineering, Wuhan, China
| | - B Yang
- Hubei Engineering Research Center of Viral Vector, Wuhan Institute of Bioengineering, Wuhan, China
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Gao Y, Zou LP, Zhang MN, Pang LY, Wang YY, Ma SF, Huang LL. [Investigation on immunization program coverage rate and its safety in children with tuberous sclerosis]. Zhonghua Er Ke Za Zhi 2017; 55:42-45. [PMID: 28072958 DOI: 10.3760/cma.j.issn.0578-1310.2017.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Objective: To investigate the status of immunization of National Immunization Program (NIP) and its adverse reaction rate in children with tuberous sclerosis. Method: Questionnaire survey was adopted to identify the vaccination coverage and its adverse events; 72 cases of children with tuberous sclerosis and 78 normal controls (healthy children completing age-appropriate NIP) admitted to Chinese People's Liberation Army General Hospital from December 2014 to November 2015 were involved into this study. Result: The age-appropriate NIP coverage rate of tuberous sclerosis was 36%(26/72). The coverage rate of bacillus calmette-guerin (BCG), hepatitis B vaccine 1st to 3rd doses (HepB1-3), oral poliovaccine 1st dose (OPV1), diphtheria, pertussis and tetanus 1st dose (DPT1), DPT1-3, meningococcal polysaccharide vaccine group A (MPVA), measles amd rubella vaccine/measles vaccine 1st dose (MRV/MCV1), and Japanese encephalitis vaccine 1st dose (JEV1) were 100%(72 cases), 75%(51 cases), 97%(66 cases), 91%(62 cases), 82%(56 cases), 66%(45 cases), 69%(42 cases), and 61%(37 cases) respectively. The reasons why the children did not complete the vaccination plan were that parents were concerned about vaccination-induced seizures or seizures had not been controlled. Among 72 children with TSC, the rate of adverse events or suspected adverse events after vaccination was 17% (12 cases), which was higher than the normal control children (2 cases, 3%) (χ2=8.799, P<0.05). The main adverse events were seizure events, which accounted for 92%(11 cases). Conclusion: The age-appropriate NIP coverage rate among children with tuberous sclerosis is low. The high incidence of adverse events may be associated with a fact that there are some nervous system abnormalities in cases with tuberous sclerosis. TSC children vaccination is relatively safe, with no serious adverse events.
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Affiliation(s)
- Y Gao
- Department of Pediatrics, Chinese People's Liberation Army General Hospital, Beijing 100853, China
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Huang LL, Zou LP. [Research progress of vigabatrin-induced retinal damage]. Zhonghua Er Ke Za Zhi 2016; 54:789-791. [PMID: 27784488 DOI: 10.3760/cma.j.issn.0578-1310.2016.10.020] [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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Pang LY, Zou LP, Huang LL, Gao Y, Ma SF, Zhang MN, Wang YY. [Rapamycin in the treatment of cardiac rhabdomyoma associated with tuberous sclerosis complex]. Zhonghua Er Ke Za Zhi 2016; 54:424-7. [PMID: 27256228 DOI: 10.3760/cma.j.issn.0578-1310.2016.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To assess the efficacy and safety of mammalian target of rapamycin (mTOR) inhibitor rapamycin in treatment of children with cardiac rhabdomyoma, associated with tuberous sclerosis complex (TSC). METHOD The clinical data of children with cardiac rhabdomyomas, who had received a diagnosis of TSC previously, were collected between September 2011 and November 2015 from Pediatric Department of the People's Liberation Army General Hospital.Patients in line with the inclusion criteria received long-term treatment with sirolimus.The starting doses of sirolimus was 1 mg/ (m(2)·d), and the plasma concentration was maintained at 5-10 μg/L.The size and number of cardiac rhabdomyomas were analyzed after treatment with rapamycin, and the efficacy and safety were assessed. The Wilcoxon test was used to analyze data. RESULT All the 51 children met the inclusion and exclusion criteria, including 30 males and 21 females.The median age for rapamycin treatment was 15.0 months (7.0-35.0 months). Tumors disappeared in 26 (51%) children, decreased by more than 50%(including 50%) in 15 (29%) children, decreased by less than 50% in 5 (12%) children, and had no change or progressed in 4 (8%) children.The number of tumors decreased by 77(72%). The median maximum diameter of tumor was 8.7 (5.9-11.3) mm before treatment, 0.0 (0.0-4.0) mm after treatment, and the median decrease of tumor size were 6.7 (3.9-10.0) mm (Z=-8.817, P<0.01). The median disappearance time was 3.26 (2.92-5.37) months.Among different age groups, after treatment by rapamycin, the rate of tumor's disappearance was 50% (12/24) in 0-1 years group.Tumors disappeared in 10 of 16 patients in >1-3 years group and in 4 of 11 patients in >3 years group.The rate of tumor's disappearance was the highest after 3 months of treatment as compared with 6 and 12 months of treatment.Ten children had adverse event that was related to rapamycin.Canker sore was reported in one child and dyslipidemia was reported in 9 children. CONCLUSION Rapamycin is efficacious and well tolerate in treatment of cardiac rhabdomyomas associate with TSC, and lead to a reduction in tumor size and number, in addition, significantly shorten the duration of cardiac rhabdomyoma.
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Affiliation(s)
- L Y Pang
- Department of Pediatrics, Chinese People's Liberation Army General Hospital, Beijing 100583, China
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Wang NN, Yan X, Gao XN, Niu HJ, Kang ZS, Huang LL. Purification and characterization of a potential antifungal protein from Bacillus subtilis E1R-J against Valsa mali. World J Microbiol Biotechnol 2016; 32:63. [PMID: 26925625 DOI: 10.1007/s11274-016-2024-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 02/03/2016] [Indexed: 01/29/2023]
Abstract
In order to identify the antagonistic substances produced by Bacillus subtilis E1R-J as candidate of biocontrol agents for controlling Apple Valsa Canker, hydrochloric acid precipitation, reverse phase chromatography, gel filtration, and ion exchange chromatography were used. The purified fraction EP-2 showed a single band in native-polyacrylamide gel electrophoresis (native-PAGE) and sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Fraction EP-2 was eluted from native-PAGE and showed a clear inhibition zone against V. mali 03-8. These results prove that EP-2 is one of the most important antifungal substances produced by B. subtilis E1R-J in fermentation broth. SDS-PAGE and Nano-LC-ESI-MS/MS analysis results demonstrated that EP-2 was likely an antifungal peptide (trA0A086WXP9), with a relative molecular mass of 12.44 kDa and isoelectric point of 9.94. The examination of antagonistic mechanism under SEM and TEM showed that EP-2 appeared to inhibit Valsa mali 03-8 by causing hyphal swelling, distortion, abnormality and protoplasts extravasation. Inhibition spectrum results showed that antifungal protein EP-2 had significantly inhibition on sixteen kinds of plant pathogenic fungi. The stability test results showed that protein EP-2 was stable with antifungal activity at temperatures as high as 100 °C for 30 min and in pH values ranging from 1.0 to 8.0, or incubated with each 5 mM Cu(2+), Zn(2+), Mg(2+), or K(+). However, the antifungal activity was negatively affected by Proteinase K treatment.
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Affiliation(s)
- N N Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, 712100, Shaanxi, People's Republic of China
| | - X Yan
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, 712100, Shaanxi, People's Republic of China
| | - X N Gao
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, 712100, Shaanxi, People's Republic of China
| | - H J Niu
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, 712100, Shaanxi, People's Republic of China
| | - Z S Kang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, 712100, Shaanxi, People's Republic of China
| | - L L Huang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, 712100, Shaanxi, People's Republic of China.
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Wang NN, Gao XN, Yan X, Li ZP, Kang ZS, Huang LL, Han QM. Purification, characterization, and heterologous expression of an antifungal protein from the endophytic Bacillus subtilis strain Em7 and its activity against Sclerotinia sclerotiorum. Genet Mol Res 2015; 14:15488-504. [PMID: 26634515 DOI: 10.4238/2015.november.30.27] [Citation(s) in RCA: 5] [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] [Indexed: 11/03/2022]
Abstract
An antifungal protein exhibiting a high activity against Sclerotinia sclerotiorum in vivo was purified by ammonium sulfate precipitation, hydrophobic chromatography, and gel filtration chromatography from the culture filtrate of the endophytic Bacillus subtilis strain Em7. The protein was characterized as a β-1,3-1,4-glucanase according to amino acid analysis, and showed excellent properties in thermal stability and acid resistance. At the same time, the antifungal protein was cloned and heterologously expressed in Escherichia coli BL21. The recombinant protein was purified and showed similar enzymatic properties to the native protein, exhibiting strong inhibitory activity against S. sclerotiorum. This shows that the β-1,3-1,4-glucanase may play a very important role in B. subtilis Em7 biocontrol function. In addition, many physiochemical properties of the native and purified recombinant protein were compared, including the effect of pH, temperature, metal cations, substrate specificity, and kinetic parameters. All parameters were similar between the native and recombinant purified protein, indicating that the purified recombinant protein has potential for industrial applications.
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Affiliation(s)
- N N Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - X N Gao
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - X Yan
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - Z P Li
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - Z S Kang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - L L Huang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - Q M Han
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
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Han DJ, Wang QL, Chen XM, Zeng QD, Wu JH, Xue WB, Zhan GM, Huang LL, Kang ZS. Emerging Yr26-Virulent Races of Puccinia striiformis f. tritici Are Threatening Wheat Production in the Sichuan Basin, China. Plant Dis 2015; 99:754-760. [PMID: 30699539 DOI: 10.1094/pdis-08-14-0865-re] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Stripe rust, caused by Puccinia striiformis f. tritici, is one of the most destructive diseases of wheat in the world. The Sichuan Basin is one of the most important regions of wheat production and stripe rust epidemics in China. Stripe rust resistance gene Yr26 (the same gene as Yr24) has been widely used in wheat breeding programs and in many cultivars grown in this region since the gene was discovered in the early 1990s. Virulence to Yr26 has increased in frequency since its first detection in 2008. The objective of this study was to assess the vulnerability of the wheat cultivars and breeding lines in the Sichuan Basin to Yr26-virulent races. In total, 85 wheat accessions were tested with Yr26-avirulent races CYR32, CYR33, and Su11-4 and two Yr26-virulent races, V26/CM42 and V26/Gui22. DNA markers for Yr26 were used to determine the presence and absence of Yr26 in the wheat accessions. Of the 85 wheat accessions, only 5 were resistant and 19 susceptible to all races tested, and the remaining 61 were resistant to at least one or more races tested in seedling stage. In all, 65 (76.5%) accessions were susceptible to the emerging Yr26-virulent race V26/Gui22. In field tests, susceptible accessions increased from 31.8% in a nursery inoculated with predominant and Yr26-avirulent races to 61.2% in the nursery inoculated with the predominant races mixed with V26/Gui22. Based on the results of the molecular marker and race tests, 33 (38.8%) accessions were determined to have Yr26, showing that the Yr26 virulence is a major threat to wheat production in the Sichuan Basin and potentially in other regions of China.
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Affiliation(s)
- D J Han
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy
| | - Q L Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, P. R. China
| | - X M Chen
- Wheat Genetics, Quality, Physiology, and Disease Research Unit, United States Department of Agriculture-Agricultural Research Service, and Department of Plant Pathology, Washington State University, Pullman 99164-6430
| | - Q D Zeng
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection
| | - J H Wu
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection
| | - W B Xue
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy
| | - G M Zhan
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University
| | - L L Huang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University
| | - Z S Kang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University
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Zhou XL, Han DJ, Chen XM, Gou HL, Guo SJ, Rong L, Wang QL, Huang LL, Kang ZS. Characterization and molecular mapping of stripe rust resistance gene Yr61 in winter wheat cultivar Pindong 34. Theor Appl Genet 2014; 127:2349-58. [PMID: 25163935 DOI: 10.1007/s00122-014-2381-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Accepted: 08/15/2014] [Indexed: 05/13/2023]
Abstract
We report a new stripe rust resistance gene on chromosome 7AS in wheat and molecular markers useful for transferring it to other wheat genotypes. Several new races of the stripe rust pathogen have established throughout the wheat growing regions of China in recent years. These new races are virulent to most of the designated seedling resistance genes limiting the resistance sources. It is necessary to identify new genes for diversification and for pyramiding different resistance genes in order to achieve more durable resistance. We report here the identification of a new resistance gene, designated as Yr61, in Chinese wheat cultivar Pindong 34. A mapping population of 208 F2 plants and 128 derived F2:3 lines in a cross between Mingxian 169 and Pindong 34 was evaluated for seedling stripe rust response. A genetic map consisting of eight resistance gene analog polymorphism (RGAP), two sequence-tagged site (STS) and four simple sequence repeat (SSR) markers was constructed. Yr61 was located on the short arm of chromosome 7A and flanked by RGAP markers Xwgp5467 and Xwgp5765 about 1.9 and 3.9 cM in distance, which were successfully converted into STS markers STS5467 and STS5765b, respectively. The flanking STS markers could be used for marker-assisted selection of Yr61 in breeding programs.
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Affiliation(s)
- X L Zhou
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of Life Sciences, Northwest A&F University, Yangling, 712100, Shaanxi, China
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34
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Ma XJ, Yang XF, Zheng X, Lin L, Chen LH, Huang LL, Cao SL. Degradation and dissolution of hemicelluloses during bamboo hydrothermal pretreatment. Bioresour Technol 2014; 161:215-20. [PMID: 24704887 DOI: 10.1016/j.biortech.2014.03.044] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 03/06/2014] [Accepted: 03/10/2014] [Indexed: 05/06/2023]
Abstract
To elucidate the hemicelluloses degradation and dissolution during hydrothermal pretreatment, hemicelluloses separated from both hydrolysate and pretreated substrate were investigated. Along with the pretreatment proceeding, some hemicelluloses fractions dissolved and diffused into the bulk liquor; MW (molecular weight) of these hemicelluloses fractions increased first and then decreased as well as amount of the fractions. Based on the definition of MW of the soluble hemicellulose, it has been concluded that some insoluble hemicellulose fractions appeared in the hydrolysate. In contrast, the hemicellulose degradation occurred continually and had been observed by the gradual decrease of MW of the hemicellulose isolated from pretreated substrate. Lingering dissolution at the later stage might attribute to the facts that some soluble fractions were still entrapped in the substrate. 5-15% hemicellulose fractions remained in the pretreated substrate at the later stage were composed of soluble species.
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Affiliation(s)
- X J Ma
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - X F Yang
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - X Zheng
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - L Lin
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - L H Chen
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - L L Huang
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - S L Cao
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
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Huang LL, Su S, Awale R, Zhang XY, Zhong LL, Tang H. Expression of anti-inflammatory mediator lipoxin A4 and inflammation responsive transcriptive factors NF-kappa B in patients with preeclampsia. CLIN EXP OBSTET GYN 2014; 41:561-566. [PMID: 25864260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To evaluate the role of lipoxin A4 (LXA4), NF-kappaB p65 in preeclampsia. MATERIALS AND METHODS LXA4 in blood serum and the lipoxin A4 receptor (ALX-R), NF-kappaB p65 mRNA, protein expressions in placenta-specific tissues were obtained from patients with preeclampsia and normal pregnancy. RESULTS Levels of lipoxin A4 in women with mild preeclampsia was significantly high (p < 0.05). There was no significant statistical difference between normal pregnancy and severe preeclampsia (p > 0.05). The mRNA expression of ALX-R was significantly low in women with preeclampsia than in control group (p < 0.01) and mRNA expression of NF- kappaB p65 was significantly high in preeclampsia (p < 0.01). The immunohistochemical staining of NF-kappaB p65 protein was stronger in severe preeclampsia group whereas staining of ALX-R in placental tissue was weaker than in control group (p < 0.01). ALX-R mRNA was negatively correlated with NF-kappaB (p < 0.0001), but there was no correlation between LXA4 and ALX-R mRNA. CONCLUSION There was an excessive maternal inflammatory response in preeclampsia. LXA4, ALX-R, and NF-kappaB p65 may be involved in the disease process ofpreeclampsia.
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Ma XJ, Cao SL, Yang XF, Lin L, Chen LH, Huang LL. Lignin removal and benzene-alcohol extraction effects on lignin measurements of the hydrothermal pretreated bamboo substrate. Bioresour Technol 2014; 151:244-248. [PMID: 24246479 DOI: 10.1016/j.biortech.2013.10.078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Revised: 10/21/2013] [Accepted: 10/23/2013] [Indexed: 06/02/2023]
Abstract
Lignin content of hydrothermal pretreated bamboo chips was determined by the two methods: TAPPI standard method (222om-06) and TAPPI standard method without benzene-alcohol extraction (BAE). The results showed that including BAE resulted in lower Klason lignin (KL) and acid soluble lignin (ASL) measurements in the prehydrolyzed substrate, that is to say, BAE removed parts of KL and ASL. Therefore, the TAPPI standard method should be modified by omitting the BAE for lignin measurements of pretreated substrate. The following lignin removal analysis suggested that lignin was removed from the bamboo substrate during pretreatment by a combination of degradation reaction and deconstruction; thereafter the pseudo lignin generated in the hydrothermal pretreatment and condensation reaction between the lignin fragments accounted for the later KL increase.
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Affiliation(s)
- X J Ma
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China
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37
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Ma XJ, Cao SL, Lin L, Luo XL, Hu HC, Chen LH, Huang LL. Hydrothermal pretreatment of bamboo and cellulose degradation. Bioresour Technol 2013; 148:408-13. [PMID: 24077149 DOI: 10.1016/j.biortech.2013.09.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Revised: 09/02/2013] [Accepted: 09/03/2013] [Indexed: 05/18/2023]
Abstract
A systematic hydrothermal pretreatment of bamboo chips had been conducted with an aim to trace the cellulose degradation. The results showed that cellulose chain cleavage basically occurred when the temperature exceeded 150°C. A slightly higher DP (degree of polymerization) than starting material had been observed at low temperature pretreatment. Treatment at higher temperature (≥ 170°C) caused severe cleavage of cellulose and therefore gave rise to low DP with more soluble species. DP of cellulose declined drastically without additional hemicelluloses dissolution when hemicelluloses removal reached to the limit level. Cellulose degradation under hydrothermal pretreatment generally followed the zero reaction kinetics with the activity energy of 121.0 kJ/mol. Besides, the increase of cellulose crystalline index and the conversion of Iα-Iβ had also observed at the hydrothermal pretreatment.
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Affiliation(s)
- X J Ma
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China
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Abstract
MicroRNAs (miRNAs) play critical roles in post-transcriptional gene regulation and act as important endogenous regulators to various stressors. Ultraviolet-B (UV-B) radiation is a major factor influencing crop growth and development. In this study, we isolated a novel wheat miRNA, named Tae-miR6000, and confirmed its expression diversity after UV-B treatments. Additionally, using the Northern blotting technique, we found that six miRNAs were highly responsive to UV-B stress in wheat. Of these six miRNAs, miR159, miR167a, and miR171 were significantly upregulated, and the remaining three miRNAs were downregulated, at different time points after UV-B treatment. This result indicates that miRNAs may be involved in the regulation of targets after induction by UV-B stress. Furthermore, promoter analysis of the UV-B-responsive miRNA genes revealed some light-relevant cis-elements, such as the I-box and G-box. Taken together, the results of this study suggest that wheat miRNAs play important roles in the response to UV-B stress.
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Affiliation(s)
- B Wang
- College of Plant Protection and State Key Laboratory of Crop Stress Biology on Drought Regions, Northwest A&F University, Yangling, Shaanxi, China
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Ma XJ, Cao SL, Lin L, Luo XL, Chen LH, Huang LL. Surface characterizations of bamboo substrates treated by hot water extraction. Bioresour Technol 2013; 136:757-760. [PMID: 23570722 DOI: 10.1016/j.biortech.2013.03.120] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Revised: 03/12/2013] [Accepted: 03/15/2013] [Indexed: 06/02/2023]
Abstract
Environment Scanning Electron Microscopy (ESEM) and X-ray photoelectron spectroscopy (XPS) were used to characterize the surface morphology and chemical changes on both the interior and exterior surface of bamboo (Dendrocalamopsis oldhami) substrates treated by hot water extraction. ESEM results showed the visible changes between exterior and interior surface of the treated substrates, in where spherical droplets did not extensively appear on both the surfaces at start of the pretreatment; nevertheless the droplets formation on the exterior surface occurred more rapidly than that of the interior surface. Results from XPS examination that the increase of C1 (C-C, C-H) concentration and decrease of O/C ratio and O1 (C=O) concentration of the samples on the both surfaces further demonstrated that both surfaces consisted of increasing amount of lignin as the extraction continued, especially for exterior surface. The O/C ratios finally reached to a level-off value with exterior surface 0.34 and interior surface 0.37.
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Affiliation(s)
- X J Ma
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China
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40
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Yang B, Huang LL, Fang K, Wang YL, Peng DP, Liu ZL, Yuang ZH. A physiologically based pharmacokinetic model for the prediction of the depletion of methyl-3-quinoxaline-2-carboxylic acid, the marker residue of olaquindox, in the edible tissues of pigs. J Vet Pharmacol Ther 2013; 37:66-82. [PMID: 23631588 DOI: 10.1111/jvp.12053] [Citation(s) in RCA: 18] [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] [Received: 10/11/2012] [Accepted: 03/17/2013] [Indexed: 11/29/2022]
Abstract
To estimate the consumer exposure to olaquindox (OLA) residues in porcine edible tissues, a physiologically based pharmacokinetic (PBPK) model for methyl-3-quinoxaline-2-carboxylic acid (MQCA), the marker residue of OLA, was developed in pigs based on the assumptions of the flow-limited distribution, hepatic metabolism, and renal excretion. The model included separate compartments corresponding to blood, muscle, liver, kidney, adipose, and an extra compartment representing the remaining carcass. Physiological parameters were determined from literatures. Plasma protein binding, partition coefficients, and renal clearance for MQCA were determined in in vitro and in vivo studies. The metabolic conversion of OLA to MQCA was assumed as a simple, one-step process, and an apparent first-order rate constant (k) was employed to describe this metabolic process. The PBPK model was optimized and validated with plasma and tissue data from literatures and our study. Sensitivity analysis and Monte Carlo simulation were also implemented to estimate the influence of model parameters on the goodness of fit. When compared with the observed data, the PBPK model underestimated the MQCA level in all compartments at the early time points, whereas gave excellent predictions of MQCA concentration in porcine edible tissues at later time points. The correlation coefficients between the predicted and observed values were over 0.88. The consistency between the model predictions and the real residues of OLA in pigs proved the good applicability of our model in food safety risk assessment.
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Affiliation(s)
- B Yang
- National Reference Laboratory of Veterinary Drug Residues/MOA Key Laboratory of Food Safety Evaluation, Huazhong Agricultural University, Wuhan, China
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41
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Huang LL, Tang H, Awale R, Zeng ZS, Li FR, Chen Y. Antepartum embolization in management of labor induction in placenta previa. CLIN EXP OBSTET GYN 2013; 40:454-456. [PMID: 24283189] [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: 06/02/2023]
Abstract
The authors present a case of a 29-year-old woman, gravid 2 para 1, who experienced complete placenta previa and underwent vaginal delivery, after performing antepartum uterine artery embolization and rivanol amniotic injection due to contraindication of obstetric surgery. In this case, treatment was successful despite thromboembolism. Hypercoagulability in pregnancy needs to be addressed.
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Affiliation(s)
- L L Huang
- Department of Obstetrics and Gynaecology, The First Affiliated Hospital of GuangXi Medical University, NanNing, China.
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Fan SK, Chiu CP, Hsu CH, Chen SC, Huang LL, Lin YH, Fang WF, Chen JK, Yang JT. Particle chain display--an optofluidic electronic paper. Lab Chip 2012; 12:4870-4876. [PMID: 23026879 DOI: 10.1039/c2lc40480j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A particle-based display medium and a driving mechanism insensitive to the charge polarity of those particles, based on the transformation of particle chains, are developed for reflective electronic paper displays. Particle chains are formed by dipole-dipole interactions between polarized particles with an appropriate electric field applied across the tested display medium, i.e. the solution that regulates the light in the field of display technology, containing neutral polystyrene (PS) particles dispersed in water. Formation of the particle chains results in a large change in optical transmittance and reflectance of the display medium. The performance of the particle chain displays (PCD) was evaluated according to macroscopic (device), microscopic (particle) and optical (reflectance) points of view. A display medium (thickness 100 μm) containing colored PS particles (3 μm, 2.5% w/v) was polarized to display the fixed images of the directly driven electrodes and programmable images of arrayed (5 × 5) electrodes with electric fields (0.48 MV m(-1) and 0.09 MV m(-1), 500 kHz, respectively). The formation of particle chains under electric fields (0.2 MV m(-1) and 0.4 MV m(-1), 500 kHz) was observed in the microscopic images of a display medium (thickness 100 μm) with fluorescent PS particles (5 μm, 1%). Images recorded with a confocal microscope demonstrated the particle chains. The opacity, a common parameter serving to characterize a display medium, was derived by measuring the reflectance ratio of a black background to a white background of the display medium with varied thickness and particle concentration. The temporal response of a display medium (thickness 50 μm) with black PS particles (3 μm, 5%) was tested. When an electric field (0.6 MV m(-1), 500 kHz) was applied, the reflectance increased twice at the first data point in 0.7 s, attaining a contrast ratio of 2. Application of a voltage (20 s) yielded a contrast ratio of 10. The performance of a tested display medium, composed of simple PS particles and water and driven to form particle chains by polarization, is reported.
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Affiliation(s)
- Shih-Kang Fan
- Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan.
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Hong Y, Zhao XM, Huang LL, Li L, Chen XL, Yang DZ. Serum visfatin is elevated in Chinese women with polycystic ovary syndrome, but might not be a reliable predictor of their glucose intolerance. J BIOL REG HOMEOS AG 2012; 26:221-229. [PMID: 22824749] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Both visfatin and polycystic ovary syndrome (PCOS) were previously reported to be in relation to abnormal glucose metabolism (AGM). The hypothesis was investigated in this paper that plasma visfatin level are elevated in Chinese women with PCOS, and could substitute oral glucose tolerance test (OGTT) as a simple predictor for their glucose intolerance. This cross-sectional study enrolled 119 women (91 newly diagnosed PCOS patients and 28 eumenorrheic age- and BMI- matched controls); anthropometric, hormonal, and metabolic parameters including serum visfatin were simultaneously measured in all participants. Plasma visfatin levels were compared between controls and PCOS subjects with various glucose metabolism status diagnosed by OGTT using 75 g of glucose. Pearson correlation coefficients were calculated to determine the correlations between various parameters. Receiver Operating Characteristic (ROC) analysis was performed to examine the diagnostic test performance of visfatin. Plasma visfatin levels were found to be significantly higher in our PCOS population compared to healthy controls (P less than 0.05). An increase in fasting visfatin concentrations with a worsening degree of glucose intolerance among PCOS patients was described. However, the difference did not reach statistical significance. In addition, visfatin was unexpectedly found to correlate with neither age, anthropometric, hormonal nor metabolic parameters. As a predictor for glucose intolerance to distinguish PCOS individuals with normal or abnormal glucose metabolism, visfatin was found to possess low potentially predictive ability according to ROC curve analysis. In conclusion, serum visfatin is significantly elevated in Chinese women with PCOS, but might not be a reliable predictor of their glucose intolerance.
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Affiliation(s)
- Y Hong
- Department of Obstetrics and Gynecology, Memorial Hospital of Sun Yat-Sen University, Guangzhou, China
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Huang LL, Yang C, Zhao Y, Xu X, Xu Q, Li GZ, Cao J, Herbert SJ, Hao L. Antioxidant defenses of mycorrhizal fungus infection against SO(2)-induced oxidative stress in Avena nuda seedlings. Bull Environ Contam Toxicol 2008; 81:440-444. [PMID: 18777153 DOI: 10.1007/s00128-008-9521-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2007] [Accepted: 08/22/2008] [Indexed: 05/26/2023]
Abstract
Colonization of arbuscular mycorrhizal fungi Glomus mosseae increased Avena nuda seedling tolerance to SO(2) exposure, as indicated by elevated total plant biomass and ameliorative photosynthetic rate, when compared to the non-mycorrhizal plants. This is associated with an improved antioxidant capacity as shown by enhanced superoxide dismutase and catalase activity, increased ascorbic acid and glutathione content, and reduced malondialdehyde and hydrogen peroxide level in the mycorrhizal plants relative to the non-mycorrhizal plants under SO(2) exposure. The mycorrhizal fungi colonization had no effect on the stomatal conductance. To our knowledge, this is the first finding of this sort.
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Affiliation(s)
- L L Huang
- College of Chemistry and Life Sciences, Shenyang Normal University, Shenyang 110034, People's Republic of China
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Chen CQ, Zheng WM, Buchenauer H, Huang LL, Lu NH, Kang ZS. Isolation of microsatellite loci from expressed sequence tag library of Puccinia striiformis f. sp. tritici. Mol Ecol Resour 2008; 9:236-8. [PMID: 21564613 DOI: 10.1111/j.1755-0998.2008.02423.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We described twenty polymorphic microsatellite loci derived from the expressed sequence tags of Puccinia striiformis f. sp. tritici, which causes yellow rust disease on wheat. The numbers of alleles range from two to six and eight microsatellite loci show significant similarities to known genes. Observed and expected heterozygosities ranged from 0.12 to 0.78 and from 0.24 to 0.87, respectively.
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Affiliation(s)
- C Q Chen
- College of Plant Protection and Shaanxi Key Laboratory of Molecular Biology for Agriculture, Northwest A & F University, Yangling, Shaanxi 712100, China, College of Life Science, Henan Agricultural University, Zhengzhou 450002, China, Institute of Phytomedicine, University Hohenheim, D-70593, Stuttgart, Germany
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Chang HJ, Chen TT, Huang LL, Chen YF, Tsai JY, Wang TC, Kuo HC. Optically modulated internal strain in InGaN quantum dots grown on SiN(x) nano masks. Opt Express 2008; 16:920-926. [PMID: 18542166 DOI: 10.1364/oe.16.000920] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Optically modulated internal strain has been observed in InGaN quantum dots (QDs) deposited on SiN(x) nano masks. The modulated internal strain can induce a number of intriguing effects, including the change of refractive index and the redshift of InGaN A(1)(LO) phonon. The underlying mechanism can be well accounted for in terms of the variation of internal strain through the converse piezoelectric effect arising from the screening of the internal electric field due to spatial separation of photoexcited electrons and holes. Our results point out a convenient way for the fine tuning of physical properties in nitride-based semiconductor nanostructures, which is very important for high quality optoelectronic devices.
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Affiliation(s)
- H J Chang
- Department of Physics, National Taiwan University, Taipei 106, Taiwan
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Abstract
Monitoring the pathogenic fungus of wheat stripe rust, Puccinia striiformis f. sp. tritici, plays a key role in effective control of the disease. In the present study, we developed a specific and sensitive polymerase chain reaction (PCR) assay for detecting the pathogen in wheat (Triticum aestivum) leaves. A pair of primers (PSF and PSR) was designed based on the internal transcribed spacer (ITS) region sequence of P. striiformis f. sp. tritici. PCR products that were amplified with universal primers ITS1 and ITS4 were cloned into pGEM-T Easy vectors and sequenced. The ITS sequence was compared with those of P. striiformis f. sp. tritici, P. triticina, P. graminis f. sp. tritici, Blumeria graminis f. sp. tritici, Fusarium graminearum, Rhizoctonia cerealis, and Bipolaris sorokiniana, which are associated with early symptoms of foliar diseases on wheat. Specificity of the primers was tested in the PCR assays using DNA extracted from all tested P. striiformis f. sp. tritici isolates, other fungal species, and healthy and infected wheat leaves sampled around stripe rust foci in wheat fields, different days after inoculation with P. striiformis f. sp. tritici, as well as asymptomatic wheat leaves sampled around stripe rust foci in the fields. A PCR product of 169 bp was amplified from DNA of all P. striiformis f. sp. tritici isolates. The primers did not amplify DNA from the other tested fungal species. The pathogen was detected from asymptomatic wheat leaves inoculated with P. striiformis f. sp. tritici under greenhouse conditions, as well as leaves sampled around stripe rust foci in wheat fields. Under optimum conditions, the PCR assay was highly sensitive and required only 0.1 pg of the target DNA for a detectable and reliable amplification with the PSF and PSR primers.
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Affiliation(s)
- J Zhao
- College of Plant Protection and Shaanxi Key Laboratory of Molecular Biology for Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China
| | - X J Wang
- College of Plant Protection and Shaanxi Key Laboratory of Molecular Biology for Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China
| | - C Q Chen
- College of Plant Protection and Shaanxi Key Laboratory of Molecular Biology for Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China
| | - L L Huang
- College of Plant Protection and Shaanxi Key Laboratory of Molecular Biology for Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China
| | - Z S Kang
- College of Plant Protection and Shaanxi Key Laboratory of Molecular Biology for Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China
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Liu JY, Huang LL, Ye YH, Zou WX, Guo ZJ, Tan RX. Antifungal and new metabolites of Myrothecium sp. Z16, a fungus associated with white croaker Argyrosomus argentatus. J Appl Microbiol 2006; 100:195-202. [PMID: 16405700 DOI: 10.1111/j.1365-2672.2005.02760.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIMS Fungal infection is still a life-threatening risk for the immunocompromised population such as AIDS patients and those who receive treatments with immunosuppressors and/or frequent administrations of wide-spectrum antibiotics, which inevitably lead to the drug resistance and unbalanced microflora populations. The present work was accordingly performed to characterize more potent antifungal metabolites from various cultures of marine fungi residing in white croaker Argyrosomus argentatus. METHODS AND RESULTS The three most common opportunistic human pathogens Candida albicans (CCCCM ID 00148), Aspergillus niger (CCCCM ACCC 30005) and Trichophyton rubrum (CCCCM ID 00001) were selected as test fungi. A total of 16 cultivable fungal strains were isolated from the variant tissues of Ar. argentatus collected from the Yellow Sea, followed by preliminary antifungal screenings of the EtOAc extracts of the corresponding cultures. As a result, the inhibition of the three target fungi, plus being allergic to isolators' skin, were discerned with the EtOAc extract of the fungus under the isolation number Z16 that was identified subsequently as Myrothecium sp. by a combination of morphological and 18S rDNA finger-typing characteristics. A follow-up bioassay fractionation of the EtOAc extract, in conjunction with spectral analyses [MS, (1)H-NMR, (13)C-NMR, distortionless enhancement by polarization transfer (DEPT), heteronuclear multiple quantum coherence (HMQC) and heteronuclear multiple bond resonance (HMBC)] wherever required, afforded eventually the characterization of a new acid (compound 1: 4,5-ditridecyl-octanedioic acid), three macrocyclic trichothecenes including roridin A (compound 2), verrucarin A (compound 3) and 8beta-acetoxy-roridin H (compound 4), (22E,24R)-cerevisterol (compound 5) and N-phenyl-beta-amino-naphthalene (compound 6). In vitro antifungal tests showed that the three trichothecenes were active against A. niger, T. rubrum and C. albicans with MICs of 31.25, 62.5 and 125 microg ml(-1) for compound 2, 250, 125 and 31.25 microg ml(-1) for compound 3 as well as 125, 62.5 and 125 microg ml(-1) for compound 4 respectively. The MICs of ketoconazole (co-assayed herewith as a positive reference) against A. niger, T. rubrum and C. albicans were 31.25, 250, 31.25 microg ml(-1) respectively. A preliminary structure-activity relationship of the antifungal trichothecenes was highlighted in brief. CONCLUSIONS The present investigation demonstrated that marine fungus Myrothecium sp. Z16 associated with white croaker (Ar. argentatus), was an efficient producer of a new acid and antifungal trichothecenes, the latter presumably being also the allergic substances in the culture. SIGNIFICANCE AND IMPACT OF THE STUDY The title marine fungus was investigated to be a resource of new aliphatic acid, and trichothecenes with potent antifungal and dermal toxic actions.
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Affiliation(s)
- J Y Liu
- Institute of Functional Biomolecules, State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China
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Lin HY, Cheng CL, Chou YY, Huang LL, Chen YF, Tsen KT. Enhancement of band gap emission stimulated by defect loss. Opt Express 2006; 14:2372-9. [PMID: 19503575 DOI: 10.1364/oe.14.002372] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Defect radiation has been always considered as the most important loss for an emitter based on band gap emission. Here, we propose a novel approach which goes against this conventional wisdom. Based on the resonance effect between the surface plasmon of metal nanoparticles and defect emission, it is possible to convert the useless defect radiation to the useful excitonic emission with a giant enhancement factor. Through the transfer of the energetic electrons excited by surface plasmon from metal nanoparticles to the conduction band of the emitter, the band gap emission can be greatly enhanced, while the defect emission can be suppressed to noise level.
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Liu CH, Liu JY, Huang LL, Zou WX, Tan RX. Absolute configuration of keisslone, a new antimicrobial metabolite from Keissleriella sp. YS4108, a marine filamentous fungus. Planta Med 2003; 69:481-483. [PMID: 12802739 DOI: 10.1055/s-2003-39696] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In order to purify enough material for establishing the absolute stereochemistry of the new antifungal metabolite 3,6,8-trihydroxy-3-[3,5-dimethyl-2-oxo-3(E)-heptenyl]-2,3-dihydronaphthalen-1(4H)-one produced by Keissleriella sp., a marine filamentous fungus (strain number: YS 4108), a repeated growth and fractionation of the fungal culture was performed to give instead a new antimicrobial metabolite, keisslone (1), the structure of which was elucidated on the basis of spectral analyses including homo- and hetero-nuclear correlation NMR experiments (HMQC, COSY, NOESY and HMBC). The absolute configuration of metabolite 1 was determined mainly by its CD data and NOESY spectrum. The compound 1 was shown to be inhibitory against the human pathogenic fungi Candida albicans, Trichophyton rubrum and Aspergillus niger with MICs of 50, 70, 40 microg/mL, respectively. In order to purify enough material for establishing the absolute stereochemistry of the new antifungal metabolite 3,6,8-trihydroxy-3-[3,5-dimethyl-2-oxo-3(E)-heptenyl]-2,3-dihydronaphthalen-1(4 H)-one produced by Keissleriella sp., a marine filamentous fungus (strain number: YS 4108), a repeated growth and fractionation of the fungal culture was performed to give instead a new antimicrobial metabolite, keisslone (1), the structure of which was elucidated on the basis of spectral analyses including homo- and hetero-nuclear correlation NMR experiments (HMQC, COSY, NOESY and HMBC). The absolute configuration of metabolite 1 was determined mainly by its CD data and NOESY spectrum. The compound 1 was shown to be inhibitory against the human pathogenic fungi Candida albicans, Trichophyton rubrum and Aspergillus niger with MICs of 50, 70, 40 microg/mL, respectively.
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