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Zheng ZQ, Liu YY, Luo WW, Zhang HW, Wang YY, Wang H, Li XM, Chen HP, Li Y, Jin WD, Huang H, Guan YT, Zhang HM, Li SK, Ren JA, Wang PG. [Investigation and factor analysis of postoperative surgical site infections in emergency abdominal surgery in China from 2018 to 2021 based on Chinese SSI Surveillance]. Zhonghua Wei Chang Wai Ke Za Zhi 2023; 26:827-836. [PMID: 37709690 DOI: 10.3760/cma.j.cn441530-20230619-00216] [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: 09/16/2023]
Abstract
Objective: We investigated the incidence of surgical site infection (SSI) following emergency abdominal surgery (EAS) in China and further explored its risk factors, providing a reference for preventing and controlling SSI after EAS. Methods: This was an observational study. Data of patients who had undergone EAS and been enrolled in the Chinese SSI Surveillance Program during 2018-2021were retrospectively analyzed. All included patients had been followed up for 30 days after surgery. The analyzed data consisted of relevant patient characteristics and perioperative clinical data, including preoperative hemoglobin, albumin, and blood glucose concentrations, American Society of Anesthesiologists (ASA) score, grade of surgical incision, intestinal preparation, skin preparation, location of surgical site, approach, and duration. The primary outcome was the incidence of SSI occurring within 30 days following EAS. SSI was defined as both superficial and deep incisional infections and organ/space infections, diagnoses being supported by results of microbiological culture of secretions and pus. Secondary outcomes included 30-day postoperative mortality rates, length of stay in the intensive care unit (ICU), duration of postoperative hospitalization, and associated costs. The patients were classified into two groups, SSI and non-SSI, based on whether an infection had been diagnosed. Univariate and multivariate logistic regression analyses were performed to identify risk factors associated with SSI following EAS. Results: The study cohort comprised 5491 patients who had undergone EAS, comprising 3169 male and 2322 female patients. SSIs were diagnosed in 168 (3.1%) patients after EAS (SSI group); thus, the non-SSI group consisted of 5323 patients. The SSIs comprised superficial incision infections in 69 (41.1%), deep incision infections in 51 (30.4%), and organ or space infections in 48 (28.6%). Cultures of secretions and pus were positive in 115 (68.5%) cases. The most frequently detected organism was Escherichia coli (47/115; 40.9%). There were no significant differences in sex or body mass index between the SSI and non-SSI groups (both P>0.05). However, the proportion of individuals aged 60 years or older was significantly greater in the SSI than in the non-SSI group (49.4% [83/168] vs. 27.5% [1464/5323), χ2=38.604, P<0.001). Compared with the non-SSI group, the SSI group had greater proportions of patients with diabetes (11.9% [20/168] vs. 4.8% [258/5323], χ2=16.878, P<0.001), hypertension (25.6% [43/168] vs. 12.2% [649/5323], χ2=26.562, P<0.001); hemoglobin <110 g/L (27.4% [46/168] vs. 13.1% [697/5323], χ2=28.411, P<0.001), and albuminemia <30 g/L (24.4% [41/168] vs. 5.9% [316/5323], χ2=91.352, P<0.001), and a reduced rate of preoperative skin preparation (66.7% [112/168] vs. 75.9% [4039/5323], χ2=7.491, P=0.006). Furthermore, fewer patients in the SSI group had preoperative ASA scores of between one and two (56.0% [94/168] vs. 88.7% [4724/5323], χ2=162.869, P<0.001) in the non-SSI group. The incidences of contaminated and infected incisions were greater in the SSI group (63.1% [106/168] vs. 38.6% [2056/5323], χ2=40.854, P<0.001). There was a significant difference in surgical site distribution between the SSI and non-SSI groups (small intestine 29.8% [50/168] vs. 10.6% [565/5323], colorectal 26.2% [44/168] vs. 5.6% [298/5 323], and appendix 24.4% [41/168] vs. 65.1% [3465/5323]) χ2=167.897, P<0.001), respectively. There was a significantly lower proportion of laparoscope or robotic surgery in the non-SSI group (24.4 % [41/168] vs. 74.2% [3949/5323], χ2=203.199, P<0.001); the percentage of operations of duration less than 2 hours was significantly lower in the SSI than non-SSI group (35.7% [60/168] vs. 77.4% [4119/5323], χ2=155.487, P<0.001). As to clinical outcomes, there was a higher 30-day postoperative mortality rate (3.0%[5/168] vs. 0.2%[10/5323], χ2=36.807, P<0.001) and higher postoperative ICU occupancy rate (41.7% [70/168] vs. 19.7% [1046/5323], χ2=48.748, P<0.001) in the SSI group. The median length of stay in the ICU (0[2] vs. 0[0] days, U=328597.000, P<0.001), median total length of stay after surgery (16[13] vs. 6[5] days, U=128146.000, P<0.001), and median hospitalization cost (ten thousand yuan, 4.7[4.4] vs. 1.7[1.8], U=175965.000, P<0.001) were all significantly greater in the SSI group. Multivariate logistic regression analysis revealed that the absence of skin preparation before surgery (OR=2.435,95%CI: 1.690-3.508, P<0.001), preoperative albuminemia <30 g/L (OR=1.680, 95%CI: 1.081-2.610, P=0.021), contaminated or infected incisions (OR=3.031, 95%CI: 2.151-4.271, P<0.001), and laparotomy (OR=3.436, 95% CI: 2.123-5.564, P<0.001) were independent risk factors of SSI. Operative duration less than 2 hours (OR=0.465, 95%CI: 0.312-0.695, P<0.001) and ASA score of 1-2 (OR=0.416, 95% CI: 0.289-0.601, P<0.001) were identified as independent protective factors for SSI. Conclusions: It is important to consider the nutritional status in the perioperative period of patients undergoing EAS. Preoperative skin preparation should be conducted and, whenever possible, laparoscope or robot-assisted surgery. Duration of surgery should be as short as possible while maintaining surgery quality and improving patient care.
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Affiliation(s)
- Z Q Zheng
- Department of Emergency Surgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Y Y Liu
- Department of Emergency Surgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - W W Luo
- Department of Emergency Surgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - H W Zhang
- Department of Emergency Surgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Y Y Wang
- Department of Emergency Surgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - H Wang
- Department of Gastrointestinal Surgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - X M Li
- Department of Hepatopancreatobiliary Surgery, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou 450007, China
| | - H P Chen
- Department of Nosocomial Infection Management, Jinchen General Hospital, Jinchen 048006, China
| | - Y Li
- Department of General Surgery, Zigong First People's Hospital, Zigong 643000, China
| | - W D Jin
- Department of General Surgery, General Hospital of Central Theater Command of PLA, Wuhan 430070, China
| | - H Huang
- Department of General Surgery, The First Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - Y T Guan
- Department of Emergency Surgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - H M Zhang
- Department of Emergency Surgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - S K Li
- Department of Emergency Surgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - J A Ren
- Research Institute of General Surgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210002, China
| | - P G Wang
- Department of Emergency Surgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
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Zhang H, Lv QW, Zheng ZQ, Shen LJ, Zhou J, Guo M. Prognostic Role of Serum Soluble Tim-3 in Severe Traumatic Brain Injury: A Prospective Observational Study. Neuropsychiatr Dis Treat 2023; 19:153-169. [PMID: 36698699 PMCID: PMC9868801 DOI: 10.2147/ndt.s396771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 01/07/2023] [Indexed: 01/18/2023] Open
Abstract
OBJECTIVE T cell immunoglobulin and mucin domain-3 (Tim-3) may be implicated in neuroinflammation. Herein, we attempted to discern the role of serum soluble (s) Tim-3 as an inflammatory prognostic biomarker of severe traumatic brain injury (sTBI). METHODS In this prospective observational study of 112 sTBI patients and 112 controls, serum sTim-3 levels were determined, Rotterdam computed tomography (CT) classification and Glasgow coma scale (GCS) were selected as the two severity indicators, serum C-reactive protein (CRP) was regarded as an inflammatory biomarker, and poor prognosis was referred to as extended Glasgow outcome scale (GOSE) scores 1-4 at 180 days after trauma. RESULTS Serum sTim-3 levels were markedly higher in patients than in controls (median, 4.2 ng/mL versus 0.7 ng/mL; P<0.001). Serum sTim-3 levels of patients were independently related to Rotterdam CT scores (β=1.126), GCS scores (β=-0.589), serum CRP levels (β=0.155) and GOSE scores (β=-0.211). Serum sTim-3 appeared as an independent predictor of post-traumatic 180-day mortality (odds ratio=1.289), overall survival (hazard ratio=1.208) and poor prognosis (odds ratio=1.293). Serum sTim-3 levels discriminated patients at risk of post-injury 180-day mortality and poor prognosis with areas under curve (AUCs) at 0.753 and 0.782, respectively. Serum sTim-3 levels combined with GCS scores and Rotterdam CT scores (AUC=0.869) exhibited significantly higher AUC than Rotterdam CT scores (P=0.026), but not than GCS scores (P=0.181) for death prediction and their combination (AUC=0.895) had significantly higher AUC than GCS scores (P=0.036) or Rotterdam CT scores (P=0.005) for outcome prediction. CONCLUSION Elevated serum sTim-3 levels, in close correlation with traumatic severity and inflammation, are substantially associated with long-term death and poor outcome, indicating that serum sTim-3, as an inflammatory biomarker, may be of clinical significance in severity assessment and prediction of prognosis following sTBI.
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Affiliation(s)
- Han Zhang
- Department of Neurosurgery, Shengzhou People's Hospital (the First Affiliated Hospital of Zhejiang University Shengzhou Branch), Shengzhou, People's Republic of China
| | - Qing-Wei Lv
- Department of Neurosurgery, Shengzhou People's Hospital (the First Affiliated Hospital of Zhejiang University Shengzhou Branch), Shengzhou, People's Republic of China
| | - Zi-Qiang Zheng
- Department of Neurosurgery, Shengzhou People's Hospital (the First Affiliated Hospital of Zhejiang University Shengzhou Branch), Shengzhou, People's Republic of China
| | - Liang-Jun Shen
- Department of Neurosurgery, Shengzhou People's Hospital (the First Affiliated Hospital of Zhejiang University Shengzhou Branch), Shengzhou, People's Republic of China
| | - Jing Zhou
- Department of Neurosurgery, Shengzhou People's Hospital (the First Affiliated Hospital of Zhejiang University Shengzhou Branch), Shengzhou, People's Republic of China
| | - Mi Guo
- Department of Neurosurgery, Shengzhou People's Hospital (the First Affiliated Hospital of Zhejiang University Shengzhou Branch), Shengzhou, People's Republic of China
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Shi YY, Lu YM, Yan GF, Zheng ZQ, Zhang M, Zhang Y, Yu H, Zhang T, Chen YW, Wang LB, Zhou JG, Zhou W. [Severe pneumonia caused by coinfection of SARS-CoV-2 Omicron variant and Mycoplasma pneumoniae in a child]. Zhonghua Er Ke Za Zhi 2022; 60:600-602. [PMID: 35582946 DOI: 10.3760/cma.j.cn112140-20220430-00400] [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: 06/15/2023]
Affiliation(s)
- Y Y Shi
- Department of Respiratory Medicine,Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - Y M Lu
- Department of Pediatrics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 201112, China
| | - G F Yan
- Pediatric Intensive Care Unit,Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - Z Q Zheng
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - M Zhang
- Department of Respiratory Medicine,Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - Y Zhang
- Department of Infectious Disease, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - H Yu
- Department of Infectious Disease, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - T Zhang
- Department of Gastroenterology, Hepatology and Nutrition, Shanghai Children's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200062, China
| | - Y W Chen
- Department of Cardiology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, National Children's Medical Center, Shanghai 200127, China
| | - L B Wang
- Department of Respiratory Medicine,Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - J G Zhou
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - Wenhao Zhou
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
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Wang DD, He SM, Yang Y, Mao YZ, Yin D, Zheng ZQ, Chen X. Effects of cimetidine on ciclosporin population pharmacokinetics and initial dose optimization in aplastic anemia patients. Eur J Pharm Sci 2022; 174:106183. [PMID: 35398292 DOI: 10.1016/j.ejps.2022.106183] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 02/19/2022] [Accepted: 04/03/2022] [Indexed: 12/01/2022]
Abstract
The present study aimed to explore the effects of cimetidine on ciclosporin population pharmacokinetics and initial dose optimization in aplastic anemia patients. Aplastic anemia patients were used to establish a population pharmacokinetic model by the nonlinear mixed effect (NONMEM), and concentrations of ciclosporin were simulated by Monte Carlo method. With the same weight, the ciclosporin clearance rates were 0.387:1 in patients with or without cimetidine, respectively. In the measured ciclosporin concentrations, compared to aplastic anemia patients without cimetidine, ciclosporin concentrations were higher in patients with cimetidine (P < 0.01). Further research found that at the same body weight and same dose, ciclosporin concentrations in aplastic anemia patients with cimetidine were indeed higher than those in patients without cimetidine (P < 0.01). The initial recommended ciclosporin dose for patients without cimetidine were 7mg/kg splited into two doses for weight of 40-60kg, and 6mg/kg splited into two doses for weight of 60-100kg. The patients with cimetidine were recommended to take 3mg/kg ciclosporin splited into two doses for weight of 40-100kg. It was the first time to explore the effects of cimetidine on ciclosporin population pharmacokinetics and initial dose optimization in aplastic anemia patients. Patients coadministration of cimetidine, may need low ciclosporin dose.
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Affiliation(s)
- Dong-Dong Wang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy & School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China.
| | - Su-Mei He
- Department of Pharmacy, The Affiliated Suzhou Science & Technology Town Hospital of Nanjing Medical University, Suzhou 215153, China
| | - Yang Yang
- Department of Pharmacy, The Affiliated Changzhou Children's Hospital of Nantong University, Changzhou 213003, China
| | - Yi-Zhen Mao
- Department of Endocrinology, Xuzhou Central Hospital, Xuzhou 221009, China
| | - Di Yin
- Department of Pharmacy, The Affiliated Wuxi Maternal and Child Health Hospital of Nanjing Medical University, Wuxi 214002, China
| | - Zi-Qiang Zheng
- Department of Pharmacy, The First People's Hosipital of Lianyungang, Lianyungang 222000, China
| | - Xiao Chen
- Department of Pharmacy, The People's Hospital of Jiangyin, Jiangyin 214400, China; Department of Pharmacy, Children's Hospital of Fudan University, Shanghai 201102, China
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Lv QW, Zheng ZQ, Zhang H, Guo M, Shen LJ. Serum hypoxia-inducible factor 1alpha emerges as a prognostic factor for severe traumatic brain injury. Clin Chim Acta 2021; 522:77-82. [PMID: 34411556 DOI: 10.1016/j.cca.2021.08.017] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/06/2021] [Accepted: 08/13/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Hypoxia-inducible factor 1alpha (HIF-1α) is implicated in the cell's response to hypoxia. We investigated whether serum HIF-1α concentrations are correlated with the severity and clinical outcome of severe traumatic brain injury (sTBI). METHODS Serum HIF-1α concentrations were quantified in 104 sTBI patients and 80 healthy controls. Trauma severity was assessed using Glasgow coma scale (GCS). Glasgow outcome scale (GOS) score of 1-3 at post-trauma 90 days was defined as a poor outcome. Multivariate analyses were performed to discern the relationship between serum HIF-1α concentrations and outcome. RESULTS Patients displayed significantly higher serum HIF-1α concentrations than controls (median, 294.9 versus 102.7 pg/ml). HIF-1α concentrations were intimately related to GCS scores (r = -0.62) and GOS scores (r = -0.64). 48 patients (46.2%) experienced a poor outcome. Serum HIF-1α concentrations > 280.2 pg/ml significantly distinguished patients with the development of poor outcome with 77.1% sensitivity and 69.6% specificity (AUC, 0.750; 95% CI: 0.655-0.829). Serum HIF-1α concentrations > 280.2 pg/ml emerged as an independent predictor for poor outcome (OR: 4.179; 95% CI: 1.024-17.052). CONCLUSIONS Serum HIF-1α concentrations are tightly associated with trauma severity and poor 90-day outcome, substantializing serum HIF-1α as a promising prognostic biomarker for sTBI.
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Affiliation(s)
- Qing-Wei Lv
- Department of Neurosurgery, Shengzhou People's Hospital (the First Affiliated Hospital of Zhejiang University Shengzhou branch), No. 666 Dangui Road, Shengzhou 312400, Zhejiang, China.
| | - Zi-Qiang Zheng
- Department of Neurosurgery, Shengzhou People's Hospital (the First Affiliated Hospital of Zhejiang University Shengzhou branch), No. 666 Dangui Road, Shengzhou 312400, Zhejiang, China
| | - Han Zhang
- Department of Neurosurgery, Shengzhou People's Hospital (the First Affiliated Hospital of Zhejiang University Shengzhou branch), No. 666 Dangui Road, Shengzhou 312400, Zhejiang, China
| | - Mi Guo
- Department of Neurosurgery, Shengzhou People's Hospital (the First Affiliated Hospital of Zhejiang University Shengzhou branch), No. 666 Dangui Road, Shengzhou 312400, Zhejiang, China
| | - Liang-Jun Shen
- Department of Neurosurgery, Shengzhou People's Hospital (the First Affiliated Hospital of Zhejiang University Shengzhou branch), No. 666 Dangui Road, Shengzhou 312400, Zhejiang, China
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Yao JD, Zheng ZQ, Yang GW. Alloying-assisted phonon engineering of layered BiInSe 3@nickel foam for efficient solar-enabled water evaporation. Nanoscale 2017; 9:16396-16403. [PMID: 29058001 DOI: 10.1039/c7nr04374k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The fresh water crisis has emerged as one of the most urgent bottlenecks hindering the rapid development of modern industry and society. Solar energy-driven water evaporation represents a potential green and sustainable solution to address this issue. Herein, for the first time, centimeter-scale BiInSe3-coated nickel foam (BiInSe3@NF) as an efficient solar-enabled evaporator was successfully achieved and exploited for solar energy-driven water evaporation. Benefitting from multiple scattering-induced light trapping of the rough substrate, strong light-matter interaction and intermediate band (IB)-induced efficient phonon emission of BiInSe3, the BiInSe3@NF device achieved a high evaporation rate of 0.83 kg m-2 h-1 under 1 sun irradiation, which is 2.5 times that of pure water. These figures-of-merit are superior to recently reported state-of-the-art photothermal conversion materials, such as black titania, plasmonic assembly and carbon black. In addition, superior stability over a period of 60 days was demonstrated. In summary, the current contribution depicts a facile scenario for design, production and application of an economical and efficient solar-enabled BiInSe3@NF evaporator. More importantly, the phonon engineering strategy based on alloying induced IB states can be readily applied to other analogous van der Waals materials and a series of superior vdWM alloys toward photothermal applications can be expected in the near future.
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Affiliation(s)
- J D Yao
- State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Materials Science & Engineering, School of Physics, Sun Yat-sen University, Guangzhou 510275, Guangdong, P. R. China.
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Zheng XQ, Zhu GW, Zheng ZQ, Yang Y, Gong CD, Deng SS, Wu QL, Peng YM. [Effects of infant feeding practice on eczema during early childhood in Shanghai, Hohhot, and Fuzhou]. Zhonghua Er Ke Za Zhi 2017; 54:908-912. [PMID: 27938590 DOI: 10.3760/cma.j.issn.0578-1310.2016.12.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To estimate the prevalence of eczema in early childhood and effect of infant feeding practice on eczema by different regions of China with diverse climate and dietary patterns. Method: A questionnaire survey was conducted from June 2012 to October 2012 in Shanghai, Hohhot, and Fuzhou. The parent or guardian of the children aged between 2.5 to 3.5 years attending routine health visit in the chosen communities were invited to complete a modified questionnaire of the International Study of Asthma and Allergy in Childhood (ISAAC). Logistic regression model was used to analyze of the family history of allergy, duration of breastfeeding, timing of introduction of complementary foods and other potential confounders. Result: A total of 2 242 children were interviewed, 750 from Shanghai, 716 from Hohhot, and 776 from Fuzhou. The prevalence of eczema in early childhood was significantly different among Shanghai (16.9%, 95%CI 16.87-16.93), Hohhot (34.5%, 95%CI 34.46-34.54)and Fuzhou (44.3%, 95%CI 44.26-44.34). The difference was statistically significant between 3 groups (χ2=72.05, P<0.05). Introducing complementary food after the age of 6 months was associated with a decreased risk for eczema when compared to introduction between 4 to 6 months(odds ratio (OR) 0.58, 95%CI 0.41-0.81) in Fuzhou, while there was no significant association between timing of introduction of complementary foods and eczema in Shanghai and Hohhot. Conclusion: The prevalence of eczema during early childhood is various among three cities. The relationship between timing of introduction of complementary foods and eczema in Fuzhou is different from that in Shanghai and Hohhot. The role of climate and dietary patterns on prevalence of eczema needs further studies.
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Affiliation(s)
- X Q Zheng
- Department of Primary Child Health Care, Children's Hospital of Fudan University, Shanghai 201102, China
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Yao JD, Zheng ZQ, Shao JM, Yang GW. Stable, highly-responsive and broadband photodetection based on large-area multilayered WS2 films grown by pulsed-laser deposition. Nanoscale 2015; 7:14974-81. [PMID: 26308146 DOI: 10.1039/c5nr03361f] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The progress in the field of graphene has aroused a renaissance of keen research interest in layered transition metal dichalcogenides (TMDs). Tungsten disulfide (WS2), a typical TMD with favorable semiconducting band gap and strong light-matter interaction, exhibits great potential for highly-responsive photodetection. However, WS2-based photodetection is currently unsatisfactory due to the low optical absorption (2%-10%) and poor carrier mobility (0.01-0.91 cm(2) V(-1) s(-1)) of the thin WS2 layers grown by chemical vapor deposition (CVD). Here, we introduce pulsed-laser deposition (PLD) to prepare multilayered WS2 films. Large-area WS2 films of the magnitude of cm(2) are achieved. Comparative measurements of a WS2-based photoresistor demonstrate its stable broadband photoresponse from 370 to 1064 nm, the broadest range demonstrated in WS2 photodetectors. Benefiting from the large optical absorbance (40%-85%) and high carrier mobility (31 cm(2) V(-1) s(-1)), the responsivity of the device approaches a high value of 0.51 A W(-1) in an ambient environment. Such a performance far surpasses the CVD-grown WS2-based photodetectors (μA W(-1)). In a vacuum environment, the responsivity is further enhanced to 0.70 A W(-1) along with an external quantum efficiency of 137% and a photodetectivity of 2.7 × 10(9) cm Hz(1/2) W(-1). These findings stress that the PLD-grown WS2 film may constitute a new paradigm for the next-generation stable, broadband and highly-responsive photodetectors.
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Affiliation(s)
- J D Yao
- State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Physics & Engineering, Sun Yat-sen University, Guangzhou 510275, Guangdong, P. R. China.
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Zheng CX, Zhan WH, Zhao JZ, Zheng D, Wang DP, He YL, Zheng ZQ. Prognostic value of preoperative serum levels of CEA, CA19-9 and CA72-4 in patients with colorectal cancer. World J Gastroenterol 2001; 7:431-4. [PMID: 11819806 PMCID: PMC4688738 DOI: 10.3748/wjg.v7.i3.431] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- C X Zheng
- Department of General Surgery, First Affiliated Hospital, Sun Yat-Sen University of Medical Sciences, 58 Zhongshan 2nd Road, Guangzhou 510080, Guangdong Province, China.
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Abstract
PROBLEM The presence of early pregnancy factor (EPF) has been repeatedly confirmed as indispensable to successful pregnancy. However, there is as yet little reported about how surgical abortion would affect the EPF activity, owing to the induced embryo loss. The aim of this study was to pursue this among a large number of patients available in the People's Republic of China. METHOD Sera from aborters were collected before surgical abortion and again on the 3rd, 5th and 7th day after treatment. EPF activity was detected by rosette inhibition assay. RESULTS Before surgical abortion, the mean level of EPF in pregnancy sera was about the same as that of the positive control. After surgical abortion, the EPF level declined rapidly for the first 3 days and then dropped gradually within the negative control range after 5-7 days. DISCUSSION Quantitative study of EPF activity along temporal dimensions (duration) due to surgical abortion further promotes the efficiency to take EPF activity and its rate of change as truly index for monitoring embryonic care and development of normal pregnancy.
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Affiliation(s)
- S J Cheng
- Laboratory of Reproductive Immunology, Shanxi Medical University, Taiyuan, People's Republic of China
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Fan XG, Zheng ZQ. A study of early pregnancy factor activity in preimplantation. Am J Reprod Immunol 1997; 37:359-64. [PMID: 9196793] [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: 02/04/2023] Open
Abstract
PROBLEM AND METHOD Early pregnancy factor (EPF), an Immunosuppressive substance, which appears in pregnant women's sera 48 h after fertilization, is a kind of pregnancy-specific protein. To determine whether the EPF activity could be a super early indicator of pregnancy, we used rosette inhibition assay to detect EPF activity in the sera, collected from 70 women 2-7 days after ovulation intending to conceive monitored by ultrasonography. Simultaneously we selected 40 non-pregnant sera and 12 early-pregnant sera as negative control and positive control, respectively. RESULTS The results of this study demonstrated that EPF activity is detected in 35 women's sera out of 70 women within 2-7 days after ovulation, and 28 women out of the 35 were pregnant, which was known by follow-up, and 7 were not pregnant, possibly due to either false positive results or embryo loss because of preimplantation failure, thus causing no pregnancy. The other 35 out of 70 had no EPF activity and 34 of them were not pregnant, which was known by follow-up, but one case became pregnant, which was false negative result. Our study showed that diagnosis of the super early pregnancy could be made by detecting EPF activity in maternal serum within the time of preimplantation. The accuracy of pregnancy diagnosis by this method is 88.6%, with a false negative rate of 3.4% and a false positive rate of 17.1%. The beta-HCG level was measured from the above 70 women's sera in order to contrast EPF activity. All of the sera collected 2-6 days following ovulation indicated that there were lower beta-HCG values in very early pregnancy (> or = a5 mIU/ml). On the seventh day after ovulation, EPF activity was detected in 11 out of 15 sera with only 2 of them with a b-HCG level that reached or slightly surpassed that of the early pregnancy diagnosis (5 mIU/ml and 5.4 mIU/ml, respectively). This demonstrated that beta-HCG is not the earliest signal of pregnancy; otherwise the EPF activity is one that appears 2-6 days earlier than beta-HCG appears. We measured the progesterone level of the 48 sera from the 70 collected above within 2-7 days postovulation and found most of them reached the level of progesterone in the luteal phase (7.5-98.3 nmol/L). This indicated that ovulation had taken place in these women, which was in accordance with observations by ultrasonography. CONCLUSIONS Our study showed that diagnosis (of 88.6%) of super early pregnancy could be made with an accuracy of 88.6% by detecting EPF activity in maternal serum within 2-days after ovulation. This offers a basis for pregnancy diagnosis for the women who attempt to terminate their pregnancy safely or who conceive unexpectedly, and it contributes to family-planning.
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Affiliation(s)
- X G Fan
- Research Laboratory of Reproductive Immunology, Shanxi Medical University, Taiyuan, People's Republic of China
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Abstract
Utilizing rosette inhibition test recommended by Morton et al., (Morton H, Tinneberg HR, Rolfe M, Mettier L. Rosette inhibition test: a multicenter investigation of early pregnancy factor in humans, J Reprod Immunol. 1982; 4:251-261) we have examined 44 fetal sera of abortion induced by water bag in the second and third trimester pregnancy, 4 umbilical sera of newborns, and their 48 maternal sera for detecting early pregnancy factor (EPF), which activity was expressed as rosette inhibition titre (RIT). The mean RIT value of EPF in fetal sera was 6.00 +/- 0.31 (SD) during 16-17 weeks of gestation, gradually decreased along with gestational weeks, got to 4.25 +/- 0.25 by term. The mean RITs of EPF activity in maternal sera were 5.86 +/- 0.26 and 5.89 +/- 0.35 during 5-7 weeks and 18-19 weeks, respectively, decreased afterwards, and then fell into nonpregnant range (RIT: 4.00 +/- 0.40) after 31 weeks of gestation. There was a close correlation between RITs of 44 fetal and those of their maternal sera (r = 0.615; P less than 0.001). The results revealed the presence of EPF in fetal serum during gestation. The significance of EPF distribution and its possible role of immunological regulation on survival of semiallogeneic conceptus have thus been discussed.
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Affiliation(s)
- H N Wang
- Research Laboratory of Reproductive Immunology, Shanxi Medical College, Taiyuan, People's Republic of China
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Abstract
Early pregnancy factor (EPF), an immunosuppressive substance, appears in mammalian maternal serum at a very early stage after fertilization. To investigate the normal distribution of EPF in the human body, the rosette inhibition test has been used to detect EPF in human amniotic fluid. The mean value of rosette inhibition titer (RIT) was significantly higher (5.93 +/- 0.43 SE) in 52 amniotic fluid samples (16-30 weeks' gestation) than in 23 nonpregnant sera (3.54 +/- 0.11), indicating that something in amniotic fluid inhibits rosette formation. This inhibitory factor is recognized as EPF or EPF-like substance for its activity significantly correlated with that of EPF in serum from the same donor (r = 0.756: P less than 10(-6]. The immunological significance of the EPF-like substance in amniotic fluid may be important to the survival of semiallogeneic conceptus.
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Affiliation(s)
- Z Q Zheng
- Research Laboratory of Reproductive Immunology, Shanxi Medical College, Taiyuan, People's Republic of China
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Qin ZH, Zheng ZQ. Detection of early pregnancy factor in human sera. Am J Reprod Immunol Microbiol 1987; 13:15-8. [PMID: 2436493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The rosette inhibition titers (RIT) for sera from 94 women at various stages of gestation were detected with a standardized rosette inhibition test. The results showed that an immunosuppressive substance, named early pregnancy factor (EPF), did exist in the pregnancy sera. We confirmed that the EPF activity was very high in the early pregnant stage (the mean RIT = 6.30), gradually decreased with the continuance of gestation, and disappeared at 8 weeks before delivery when the mean RIT for sera (less than 4) had fallen in the RIT nonpregnant range. In addition, observations for the EPF dynamic changes before and at varying stages after the induced abortion in 21 pregnant women showed that the mean RIT was 5.9 +/- 0.25 (SE) before the abortion and dropped below 4 (EPF activity could not be detected) at 3-5 days after the abortion.
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Zheng ZQ, Jin YC. [Study on heterogenicity of opiate receptors in the rat brain]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 1985; 7:57-60. [PMID: 2986868] [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: 01/03/2023]
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Zheng ZQ, Ma AY. [A study on the relationship between elevated maternal serum fetoprotein and abnormal pregnancy in Taiyuan District]. Zhonghua Yi Xue Za Zhi 1983; 63:106-8. [PMID: 6190541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Zheng ZQ. [Prenatal screening for fetal neural-tube defects by immunodiffusion autoradiography (author's transl)]. Zhonghua Fu Chan Ke Za Zhi 1981; 16:209-10. [PMID: 6177478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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