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Xie LY, Wang T, Yu T, Hu X, Yang L, Zhong LL, Zhang B, Zeng SZ. Correction: Seasonality of respiratory syncytial virus infection in children hospitalized with acute lower respiratory tract infections in Hunan, China, 2013-2022. Virol J 2024; 21:69. [PMID: 38509549 PMCID: PMC10953215 DOI: 10.1186/s12985-024-02340-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024] Open
Affiliation(s)
- Le-Yun Xie
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University),, Changsha, 410005, China
| | - Tao Wang
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University),, Changsha, 410005, China
| | - Tian Yu
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University),, Changsha, 410005, China.
| | - Xian Hu
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University),, Changsha, 410005, China
| | - Le Yang
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University),, Changsha, 410005, China
| | - Li-Li Zhong
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University),, Changsha, 410005, China
| | - Bing Zhang
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University),, Changsha, 410005, China
| | - Sai-Zhen Zeng
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University),, Changsha, 410005, China.
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Xie LY, Wang T, Yu T, Hu X, Yang L, Zhong LL, Zhang B, Zeng SZ. Seasonality of respiratory syncytial virus infection in children hospitalized with acute lower respiratory tract infections in Hunan, China, 2013-2022. Virol J 2024; 21:62. [PMID: 38454522 PMCID: PMC10921640 DOI: 10.1186/s12985-024-02336-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Accepted: 03/04/2024] [Indexed: 03/09/2024] Open
Abstract
BACKGROUND In China, respiratory syncytial virus (RSV) infections traditionally occur during the spring and winter seasons. However, a shift in the seasonal trend was noted in 2020-2022, during the coronavirus disease 2019 (COVID-19) pandemic. METHODS This study investigated the seasonal characteristics of RSV infection in children hospitalized with acute lower respiratory tract infections (ALRTIs). The RSV epidemic season was defined as RSV positivity in > 10% of the hospitalized ALRTI cases each week. Nine RSV seasons were identified between 2013 and 2022, and nonlinear ordinary least squares regression models were used to assess the differences in year-to-year epidemic seasonality trends. RESULTS We enrolled 49,658 hospitalized children diagnosed with ALRTIs over a 9-year period, and the RSV antigen-positive rate was 15.2% (n = 7,566/49,658). Between 2013 and 2022, the average onset and end of the RSV season occurred in week 44 (late October) and week 17 of the following year, respectively, with a typical duration of 27 weeks. However, at the onset of the COVID-19 pandemic, the usual spring RSV peak did not occur. Instead, the 2020 epidemic started in week 32, and RSV seasonality persisted into 2021, lasting for an unprecedented 87 weeks before concluding in March 2022. CONCLUSIONS RSV seasonality was disrupted during the COVID-19 pandemic, and the season exhibited an unusually prolonged duration. These findings may provide valuable insights for clinical practice and public health considerations.
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Affiliation(s)
- Le-Yun Xie
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), 410005, Changsha, China
| | - Tao Wang
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), 410005, Changsha, China
| | - Tian Yu
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), 410005, Changsha, China.
| | - Xian Hu
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), 410005, Changsha, China
| | - Le Yang
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), 410005, Changsha, China
| | - Li-Li Zhong
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), 410005, Changsha, China
| | - Bing Zhang
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), 410005, Changsha, China
| | - Sai-Zhen Zeng
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), 410005, Changsha, China.
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Wang M, Zhong LL, Fu XX, Chen J. Two new seco-abietane type diterpenoids from the leaves of Isodon serra. Nat Prod Res 2023:1-8. [PMID: 38043117 DOI: 10.1080/14786419.2023.2286602] [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: 06/09/2023] [Accepted: 11/14/2023] [Indexed: 12/05/2023]
Abstract
Two new seco-abietane type diterpenoids, named as isodonserra acid A and B (1-2), along with six known compounds, angustanoic acid A (3), epipalustric acid (4), raserrane (5), 7-methoxy coumarin (6), umbelliferone (7), and (-)-loliolide (8), were obtained from the leaves of Isodon serra. The new structures of compounds 1 and 2 were elucidated by analysing their 1D NMR, 2D NMR and HR-ESI-MS spectra. Compounds 1-8 showed moderate hepatoprotective activity against APAP-induced HepG2 cell injury with a cell survival rate from 50.4% to 78.7% at a concentration of 10 μM (p < .001, bicyclol as the positive drug, 71.7%).
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Affiliation(s)
- Min Wang
- Department of Pharmacy, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, Hainan, China
| | - Li-Li Zhong
- Department of Pharmacy, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, Hainan, China
| | - Xiang-Xiang Fu
- Department of Pharmacy, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, Hainan, China
- School of Pharmacy, Hainan Medical University, Haikou, Hainan, China
| | - Jun Chen
- Department of Pharmacy, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, Hainan, China
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Zhou M, Zhong LL, Huang H, Lin L, Chen M, Ding XF. [The role of bronchoscopy in slide tracheoplasty in children]. Zhongguo Dang Dai Er Ke Za Zhi 2023; 25:527-533. [PMID: 37272181 DOI: 10.7499/j.issn.1008-8830.2211012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVES To study the role of bronchoscopy in slide tracheoplasty. METHODS A retrospective analysis was conducted on the diagnosis and treatment of four children with tracheal stenosis admitted to Hunan Provincial People's Hospital from 2017 to 2020. The role of bronchoscopy was summarized in the preoperative evaluation, intraoperative positioning and measurement, and postoperative wound evaluation and treatment during slide tracheoplasty. RESULTS Bronchoscopy evaluation before slide tracheoplasty showed that 3 of the 4 children had complete trachea rings, 2 had pulmonary artery sling, and 2 had multiple stenosis. Slide tracheoplasty was performed in the hospital on 3 children, and the midpoint of the stenosis segment was judged under bronchoscopy, and the length of the stenosis segment was measured, which assisted in the resection of the stenosis segment of the trachea. The pathogens were identified by lavage after the surgery. One child who developed scar traction 9 months after slide tracheoplasty in another hospital was improved by interventional treatment under bronchoscopy. Mucosal changes were found under bronchoscopy in 2 children 4 days after surgery, and the treatment plan was adjusted. One month after surgery, 2 children had granulation hyperplasia, which was improved by cryotherapy under bronchoscopy. One child abandoned treatment due to anastomotic necrosis and died. Three survivors were followed up for over 6 months with good prognosis, but all had tracheobronchial malacia. CONCLUSIONS Bronchoscopy can be used for the management of slide tracheoplasty in children with tracheal stenosis, which is helpful to postoperative rehabilitation and follow-up.
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Affiliation(s)
- Miao Zhou
- Children's Medical Center, Hunan Provincial People's Hospital, Changsha 410000, China
| | - Li-Li Zhong
- Children's Medical Center, Hunan Provincial People's Hospital, Changsha 410000, China
| | - Han Huang
- Children's Medical Center, Hunan Provincial People's Hospital, Changsha 410000, China
| | - Lin Lin
- Children's Medical Center, Hunan Provincial People's Hospital, Changsha 410000, China
| | - Min Chen
- Children's Medical Center, Hunan Provincial People's Hospital, Changsha 410000, China
| | - Xiao-Fang Ding
- Children's Medical Center, Hunan Provincial People's Hospital, Changsha 410000, China
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Zhong LL, Tang F, Chen QY, Huang GX. [Advances in the fumarate hydratase-deficient diseases]. Zhonghua Bing Li Xue Za Zhi 2023; 52:423-427. [PMID: 36973212 DOI: 10.3760/cma.j.cn112151-20221125-00991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Affiliation(s)
- L L Zhong
- Department of Pathology, the 924th Hospital of the Chinese People's Liberation Army Joint Logistic Support Force, Guangxi Key Laboratory of Metabolic Diseases Research, Guangxi Zhuang Autonomous Region, Guilin 541002, China
| | - F Tang
- Department of Pathology, the 924th Hospital of the Chinese People's Liberation Army Joint Logistic Support Force, Guangxi Key Laboratory of Metabolic Diseases Research, Guangxi Zhuang Autonomous Region, Guilin 541002, China
| | - Q Y Chen
- Department of Pathology, the 924th Hospital of the Chinese People's Liberation Army Joint Logistic Support Force, Guangxi Key Laboratory of Metabolic Diseases Research, Guangxi Zhuang Autonomous Region, Guilin 541002, China
| | - G X Huang
- Department of Pathology, the 924th Hospital of the Chinese People's Liberation Army Joint Logistic Support Force, Guangxi Key Laboratory of Metabolic Diseases Research, Guangxi Zhuang Autonomous Region, Guilin 541002, China
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Liu T, Li CY, Chen H, Liu J, Zhong LL, Tang MM, Wang WB, Huang JP, Jiang XS. tBHQ attenuates podocyte injury in diabetic nephropathy by inhibiting NADPH oxidase-derived ROS generation via the Nrf2/HO-1 signalling pathway. Heliyon 2022; 8:e10515. [PMID: 36119860 PMCID: PMC9479023 DOI: 10.1016/j.heliyon.2022.e10515] [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] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 03/03/2022] [Accepted: 08/26/2022] [Indexed: 12/03/2022] Open
Abstract
Aims Oxidative stress plays a crucial role in podocyte injury in diabetic nephropathy (DN). tert-Butylhydroquinone (tBHQ) is an activator of Nrf2 that exerts protective effects in diabetic mice, but the underlying mechanism of tBHQ in the podocytes of DN is not fully understood. Materials and methods A high glucose (HG)-induced HK2 cell model and streptozotocin-induced rat model of DN were established and treated with tBHQ or apocynin. The expression levels of Nrf2, HO-1, NOX2 and NOX4 were determined by Western blot or immunohistochemical staining. The level of oxidative stress in podocytes or kidney tissues was assessed using DCFH-DA or dihydroethidium (DHE) staining. Cell injury was assessed by F-actin staining and flow cytometry analysis. Key findings We showed that HG treatment increased the expressions of NOX2 and NOX4 and enhanced ROS production in podocytes. Inhibition of NADPH oxidase activity by apocynin dramatically attenuated HG-induced ROS production and further alleviated cell injury and apoptosis in podocytes. Moreover, we found that HG inhibited the Nrf2/HO-1 signalling pathway in podocytes; however, tBHQ treatment significantly activated the Nrf2 signalling pathway, inhibited NADPH oxidase activity, and attenuated ROS production and cell injury in HG-treated podocytes. Furthermore, we observed that tBHQ treatment partially attenuated renal injury, activated the Nrf2 signalling pathway, inhibited NADPH oxidase activity and reduced ROS generation in the kidneys of STZ-induced diabetic rats. Significance These results suggest that tBHQ exerts a protective role in hyperglycaemia-induced podocyte injury, and that the potential protective mechanism of tBHQ involves inhibiting NADPH oxidase-derived ROS generation by activating the Nrf2/HO-1 signalling pathway.
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Affiliation(s)
- Ting Liu
- Department of Nephrology, Chengdu Fifth People's Hospital, Chengdu, 611130, China
| | - Chang-Yan Li
- Department of Nephrology, Chengdu Fifth People's Hospital, Chengdu, 611130, China
| | - Hao Chen
- Department of Nephrology, Chengdu Fifth People's Hospital, Chengdu, 611130, China
| | - Juan Liu
- Department of Nephrology, Chengdu Fifth People's Hospital, Chengdu, 611130, China
| | - Li-Li Zhong
- Department of Nephrology, Chengdu Fifth People's Hospital, Chengdu, 611130, China
| | - Ming-Min Tang
- Department of Nephrology, Chengdu Fifth People's Hospital, Chengdu, 611130, China
| | - Wen-Bo Wang
- Department of Nephrology, Chengdu Fifth People's Hospital, Chengdu, 611130, China
| | - Jin-Ping Huang
- Department of Nephrology, Chengdu Fifth People's Hospital, Chengdu, 611130, China
| | - Xu-Shun Jiang
- Department of Nephrology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400042, China
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Zhang HP, Huang GX, Chen QY, Zhong LL, Chen H, Qin GZ, Tang F. [Primary cervical large cell neuroendocrine carcinoma with cytological features: report of a case]. Zhonghua Bing Li Xue Za Zhi 2022; 51:71-73. [PMID: 34979762 DOI: 10.3760/cma.j.cn112151-20210425-00322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- H P Zhang
- Department of Pathology, the 924th Hospital of PLA Joint Logistic Support Force, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin 541002, China
| | - G X Huang
- Department of Pathology, the 924th Hospital of PLA Joint Logistic Support Force, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin 541002, China
| | - Q Y Chen
- Department of Pathology, the 924th Hospital of PLA Joint Logistic Support Force, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin 541002, China
| | - L L Zhong
- Department of Pathology, the 924th Hospital of PLA Joint Logistic Support Force, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin 541002, China
| | - H Chen
- Department of Pathology, the 924th Hospital of PLA Joint Logistic Support Force, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin 541002, China
| | - G Z Qin
- Department of Pathology, Lipu People's Hospital, Lipu 546600, China
| | - F Tang
- Department of Pathology, the 924th Hospital of PLA Joint Logistic Support Force, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin 541002, China
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8
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Xie LY, Zeng SZ, Yu T, Hu X, Wang T, Yang L, Zhong LL, Li JS, Duan ZJ, Zhang B. Viral loads in nasopharyngeal aspirates and tracheal aspirates among children hospitalized with invasive ventilation for human adenovirus pneumonia. Virol J 2021; 18:238. [PMID: 34847913 PMCID: PMC8638111 DOI: 10.1186/s12985-021-01711-z] [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] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 11/22/2021] [Indexed: 11/19/2022] Open
Abstract
Purpose To evaluate viral loads in children with human adenovirus (HAdV) pneumonia at different stages of disease and compare the viral load between upper and lower respiratory tract samples. Methods We prospectively enrolled children who required invasive ventilation for HAdV pneumonia. Nasopharyngeal aspirate (NPA) and tracheal aspirate (TA) samples were collected throughout the entire period of invasive ventilation. Viral detection and quantification were performed using quantitative real-time polymerase chain reaction. Results Ninety-four children were enrolled. The median age of the children was 12.0 months (IQR: 11.0–24.0), and > ninety percent of patients were aged between 6 and 59 months. Seven hundred and nine paired NPA-TA samples were collected. The median viral loads of the NPA and TA samples were 7.31 log10 and 7.50 log10 copies/mL, respectively. Viral loads generally decreased steadily over time. The median viral load after 1, 2, 3, and > 3 weeks of the disease course was 8.65, 7.70, 6.69, and 5.09 log10 copies/mL, respectively, in NPA samples and 8.67, 7.79, 7.08, and 5.53 log10 copies/mL, respectively, in TA samples. Viral load showed a significant negative correlation with time since symptom onset in both NPA samples (Spearman r = − 0.607, P = 0.000) and TA samples (Spearman r = − 0.544, P = 0.000). The predicted duration of HAdV shedding was 60.17 days in the NPA group and 65.81 days in the TA group. Viral loads in NPA and TA from the same subjects correlated well with each other (R2 = 0.694). HAdV loads in NPA and TA were most comparable during the early phase of infection (95% limits of agreement, − 1.36 to 1.30 log10 copies/mL, R2 = 0.746). Variation increased during the late phase of infection (i.e., in follow-up samples), with viral loads remaining significantly higher in TA than NPA. Conclusions In children with HAdV pneumonia, viral loads in both NPA and TA steadily decreased during the course of the disease, and the predicted duration of viral shedding was more than 2 months. The HAdV DNA load of NPA is highly correlated with that of TA, especially in the initial phase of infection.
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Affiliation(s)
- Le-Yun Xie
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), 61 Jie-Fang west road, Fu-Rong District, Changsha, 410005, China.,Hunan Provincial Key Laboratory of Pediatric Respirology, Changsha, 410005, China
| | - Sai-Zhen Zeng
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), 61 Jie-Fang west road, Fu-Rong District, Changsha, 410005, China. .,Hunan Provincial Key Laboratory of Pediatric Respirology, Changsha, 410005, China.
| | - Tian Yu
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), 61 Jie-Fang west road, Fu-Rong District, Changsha, 410005, China.,Hunan Provincial Key Laboratory of Pediatric Respirology, Changsha, 410005, China
| | - Xian Hu
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), 61 Jie-Fang west road, Fu-Rong District, Changsha, 410005, China.,Hunan Provincial Key Laboratory of Pediatric Respirology, Changsha, 410005, China
| | - Tao Wang
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), 61 Jie-Fang west road, Fu-Rong District, Changsha, 410005, China.,Hunan Provincial Key Laboratory of Pediatric Respirology, Changsha, 410005, China
| | - Le Yang
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), 61 Jie-Fang west road, Fu-Rong District, Changsha, 410005, China.,Hunan Provincial Key Laboratory of Pediatric Respirology, Changsha, 410005, China
| | - Li-Li Zhong
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), 61 Jie-Fang west road, Fu-Rong District, Changsha, 410005, China.,Hunan Provincial Key Laboratory of Pediatric Respirology, Changsha, 410005, China
| | - Jin-Song Li
- MOH Key Laboratory for Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, 100052, China
| | - Zhao-Jun Duan
- MOH Key Laboratory for Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, 100052, China
| | - Bing Zhang
- Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), 61 Jie-Fang west road, Fu-Rong District, Changsha, 410005, China. .,Hunan Provincial Key Laboratory of Pediatric Respirology, Changsha, 410005, China.
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Peng L, Zhong LL, Huang Z, Li Y, Zhang B. Clinical features of Mycoplasma pneumoniae pneumonia with adenovirus infection in children. Zhongguo Dang Dai Er Ke Za Zhi 2021; 23:1033-1037. [PMID: 34719419 DOI: 10.7499/j.issn.1008-8830.2107080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
OBJECTIVES To study the clinical features of Mycoplasma pneumoniae pneumonia (MPP) with adenovirus (ADV) infection in children. METHODS A retrospective analysis was performed on the medical data of 228 children with MPP alone and 28 children with MPP and ADV infection. The two groups were compared in terms of clinical features, laboratory results, and treatment outcome. RESULTS Compared with the MPP group, the MPP+ADV group had significantly longer duration of fever and length of hospital stay, a significantly higher proportion of patients with severe lesions (erosion and exfoliation) of the airway mucosa under bronchoscopy, a significantly higher clinical pulmonary infection score, and a significantly higher proportion of patients requiring oxygen therapy (P<0.05). There were no significant differences between the two groups in white blood cell count, C-reactive protein, Mycoplasma pneumoniae DNA copy number in bronchoalveolar lavage fluid, and the incidence rates of pleural effusion and extrapulmonary complications (P>0.05). CONCLUSIONS Compared with children with MPP alone, children with MPP and ADV infection tend to have more severe clinical manifestations and airway mucosal lesions and are more likely to require oxygen therapy, but most of the laboratory markers lack specificity.
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Affiliation(s)
- Li Peng
- First Hospital Affiliated to Hunan Normal University/Pediatric Medical Center, Hunan Provincial People's Hospital/Hunan Provincial Key Laboratory of Pediatric Respirology, Changsha 410005, China (Zhong L-L, )
| | - Li-Li Zhong
- First Hospital Affiliated to Hunan Normal University/Pediatric Medical Center, Hunan Provincial People's Hospital/Hunan Provincial Key Laboratory of Pediatric Respirology, Changsha 410005, China (Zhong L-L, )
| | - Zhen Huang
- First Hospital Affiliated to Hunan Normal University/Pediatric Medical Center, Hunan Provincial People's Hospital/Hunan Provincial Key Laboratory of Pediatric Respirology, Changsha 410005, China (Zhong L-L, )
| | - Yan Li
- First Hospital Affiliated to Hunan Normal University/Pediatric Medical Center, Hunan Provincial People's Hospital/Hunan Provincial Key Laboratory of Pediatric Respirology, Changsha 410005, China (Zhong L-L, )
| | - Bing Zhang
- First Hospital Affiliated to Hunan Normal University/Pediatric Medical Center, Hunan Provincial People's Hospital/Hunan Provincial Key Laboratory of Pediatric Respirology, Changsha 410005, China (Zhong L-L, )
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Zeng SZ, Xie LY, Yu T, Zhong LL, Li JS, Duan ZJ, Zhang B, Zeng QY. Persistent viral shedding of human adenovirus type 7 in children with severe pneumonia. J Med Virol 2021; 93:4846-4855. [PMID: 33565614 DOI: 10.1002/jmv.26864] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 01/12/2021] [Accepted: 02/07/2021] [Indexed: 12/28/2022]
Abstract
To understand host-pathogen interactions and develop effective prevention and control strategies for human adenovirus (HAdV), it is essential to explore the characteristics of HAdV shedding. Hospitalized children <14 years who had severe HAdV pneumonia were tested for HAdV DNA by quantitative real-time PCR in nasopharyngeal aspirate (NPA). A total of 132 children were enrolled, including 102 patients with HAdV type 7 (HAdV-7) infection and 12 patients with HAdV type 3 (HAdV-3) infection. A total of 1372 qualified NPA samples were collected. There was a significant negative correlation between the viral load of HAdV and the course of the disease (Spearman r = -0.547, p = .000). HAdV-7 load decreased at a rate of 0.089 log10 copies/mL per day (95% CI: -0.096 to -0.081; R 2 = 0.332), and the duration of viral shedding was predicted to be 96.9 days (y = 8.624-0.089x). However, HAdV-3 load decreased more quickly (95% CI: - 0.229 to - 0.143; R 2 = 0.403), and the duration of viral shedding was 51.4 days (y = 9.558-0.186x). The median viral load of the HAdV-7 group at weeks 2 and 3, and more than 3 weeks postinfection was higher than that of the HAdV-3 group. No significant differences in the duration of viral shedding were found in different gender, age (>2 vs. ≤2 years), and with or without underlying diseases groups. Viral shedding in children with severe HAdV pneumonia persisted, among which HAdV-7 lasted longer than 3 months and the viral load decreased slowly than HAdV-3.
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Affiliation(s)
- Sai-Zhen Zeng
- Zhujiang Hospital, Southern Medical University, Guangzhou, China.,Hunan provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, China.,Hunan Provincial Key Laboratory of Pediatric Respirology, Changsha, China
| | - Le-Yun Xie
- Hunan provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, China.,Hunan Provincial Key Laboratory of Pediatric Respirology, Changsha, China
| | - Tian Yu
- Hunan provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, China.,Hunan Provincial Key Laboratory of Pediatric Respirology, Changsha, China
| | - Li-Li Zhong
- Hunan provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, China.,Hunan Provincial Key Laboratory of Pediatric Respirology, Changsha, China
| | - Jin-Song Li
- MOH Key Laboratory for Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, China
| | - Zhao-Jun Duan
- MOH Key Laboratory for Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, China
| | - Bing Zhang
- Hunan provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, China.,Hunan Provincial Key Laboratory of Pediatric Respirology, Changsha, China
| | - Qi-Yi Zeng
- Zhujiang Hospital, Southern Medical University, Guangzhou, China
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Huang GX, Zhong LL, Chen H, Wei ZC, Liu XF, Tang F. [Merkel cell polyomavirus positive Merkel cell carcinoma metastatic to pleura and pleural effusions with unknown primary site: report of a case]. Zhonghua Bing Li Xue Za Zhi 2021; 50:143-146. [PMID: 33535313 DOI: 10.3760/cma.j.cn112151-20200505-00358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- G X Huang
- Department of Pathology, the 924th Hospital of the Chinese People's Liberation Army Joint Logistic Support Force (the 181st Hospital of the Chinese People's Liberation Army), Guangxi Key Laboratory of Metabolic Diseases Research, Guilin 541002, Guangxi Zhuang Autonomous Region, China
| | - L L Zhong
- Department of Pathology, the 924th Hospital of the Chinese People's Liberation Army Joint Logistic Support Force (the 181st Hospital of the Chinese People's Liberation Army), Guangxi Key Laboratory of Metabolic Diseases Research, Guilin 541002, Guangxi Zhuang Autonomous Region, China
| | - H Chen
- Department of Pathology, the 924th Hospital of the Chinese People's Liberation Army Joint Logistic Support Force (the 181st Hospital of the Chinese People's Liberation Army), Guangxi Key Laboratory of Metabolic Diseases Research, Guilin 541002, Guangxi Zhuang Autonomous Region, China
| | - Z C Wei
- Department of Pathology, the 924th Hospital of the Chinese People's Liberation Army Joint Logistic Support Force (the 181st Hospital of the Chinese People's Liberation Army), Guangxi Key Laboratory of Metabolic Diseases Research, Guilin 541002, Guangxi Zhuang Autonomous Region, China
| | - X F Liu
- Department of Pathology, the 924th Hospital of the Chinese People's Liberation Army Joint Logistic Support Force (the 181st Hospital of the Chinese People's Liberation Army), Guangxi Key Laboratory of Metabolic Diseases Research, Guilin 541002, Guangxi Zhuang Autonomous Region, China
| | - F Tang
- Department of Pathology, the 924th Hospital of the Chinese People's Liberation Army Joint Logistic Support Force (the 181st Hospital of the Chinese People's Liberation Army), Guangxi Key Laboratory of Metabolic Diseases Research, Guilin 541002, Guangxi Zhuang Autonomous Region, China
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Xie T, Zhong LL, Huang H, Lin XJ, Xiao NG, Peng L, Li Y, Yang ZJ, Liu SL, Chen YQ. [Detection of respiratory pathogens and clinical features in 225 children with acute exacerbation of bronchial asthma]. Zhongguo Dang Dai Er Ke Za Zhi 2020; 22:1198-1203. [PMID: 33172555 PMCID: PMC7666394] [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] [Received: 06/03/2020] [Accepted: 09/21/2020] [Indexed: 03/31/2024]
Abstract
OBJECTIVE To investigate the respiratory pathogens and clinical features in children with acute exacerbation of bronchial asthma. METHODS Nasopharyngeal swabs were collected from 225 children with acute exacerbation of bronchial asthma, aged <14 years, who attended the outpatient service or were hospitalized from August 2017 to August 2019. Quantitative real-time PCR was used to detect 12 pathogens, i.e., respiratory syncytial virus (RSV), human rhinovirus (HRV), influenza virus A (IFVA), influenza virus B (IFVB), parainfluenza virus types 1-3 (PIV1-3), human metapneumovirus (HMPV), adenovirus (ADV), Bordetella pertussis (BP), Chlamydia pneumoniae (CP), and Mycoplasma pneumoniae (MP). RESULTS The overall detection rate of virus was 46.2% (104/225), and 7 kinds of viruses were detected, i.e., HRV (19.6%, 44/225), ADV (16.0%, 36/225), IFVB (5.8%, 13/225), RSV (4.9%, 11/225), IFVA (3.6%, 8/225), PIV3 (1.8%, 4/225), and HMPV (0.4%, 1/225). Of all pathogens, BP had the highest detection rate of 28.4% (64/225), and the detection rates of MP and CP were 16.4% (37/225) and 0.4% (1/225), respectively. The mild exacerbation group had a higher detection rate of BP than the severe exacerbation group (P<0.05), while the severe exacerbation group had significantly higher detection rates of RSV and MP than the mild exacerbation group (P<0.05). There were significant differences in the proportion of children with paroxysmal cough, spasmodic cough, fever, lung rales and abnormal lung imaging findings among the simple BP infection, simple virus infection and simple MP infection groups (P<0.05). CONCLUSIONS BP, HRV, and MP are common respiratory pathogens detected in children with acute exacerbation of bronchial asthma, and respiratory virus infection is an important pathogen of acute exacerbation of asthma in children. Acute exacerbation of asthma caused by different pathogens has different clinical features and severities.
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Affiliation(s)
- Tian Xie
- Children's Medical Center, Hunan Provincial People's Hospital, Changsha 410002, China.
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Xie T, Zhong LL, Huang H, Lin XJ, Xiao NG, Peng L, Li Y, Yang ZJ, Liu SL, Chen YQ. [Detection of respiratory pathogens and clinical features in 225 children with acute exacerbation of bronchial asthma]. Zhongguo Dang Dai Er Ke Za Zhi 2020; 22:1198-1203. [PMID: 33172555 PMCID: PMC7666394 DOI: 10.7499/j.issn.1008-8830.2006024] [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] [Received: 06/03/2020] [Accepted: 09/21/2020] [Indexed: 06/11/2023]
Abstract
OBJECTIVE To investigate the respiratory pathogens and clinical features in children with acute exacerbation of bronchial asthma. METHODS Nasopharyngeal swabs were collected from 225 children with acute exacerbation of bronchial asthma, aged <14 years, who attended the outpatient service or were hospitalized from August 2017 to August 2019. Quantitative real-time PCR was used to detect 12 pathogens, i.e., respiratory syncytial virus (RSV), human rhinovirus (HRV), influenza virus A (IFVA), influenza virus B (IFVB), parainfluenza virus types 1-3 (PIV1-3), human metapneumovirus (HMPV), adenovirus (ADV), Bordetella pertussis (BP), Chlamydia pneumoniae (CP), and Mycoplasma pneumoniae (MP). RESULTS The overall detection rate of virus was 46.2% (104/225), and 7 kinds of viruses were detected, i.e., HRV (19.6%, 44/225), ADV (16.0%, 36/225), IFVB (5.8%, 13/225), RSV (4.9%, 11/225), IFVA (3.6%, 8/225), PIV3 (1.8%, 4/225), and HMPV (0.4%, 1/225). Of all pathogens, BP had the highest detection rate of 28.4% (64/225), and the detection rates of MP and CP were 16.4% (37/225) and 0.4% (1/225), respectively. The mild exacerbation group had a higher detection rate of BP than the severe exacerbation group (P<0.05), while the severe exacerbation group had significantly higher detection rates of RSV and MP than the mild exacerbation group (P<0.05). There were significant differences in the proportion of children with paroxysmal cough, spasmodic cough, fever, lung rales and abnormal lung imaging findings among the simple BP infection, simple virus infection and simple MP infection groups (P<0.05). CONCLUSIONS BP, HRV, and MP are common respiratory pathogens detected in children with acute exacerbation of bronchial asthma, and respiratory virus infection is an important pathogen of acute exacerbation of asthma in children. Acute exacerbation of asthma caused by different pathogens has different clinical features and severities.
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Affiliation(s)
- Tian Xie
- Children's Medical Center, Hunan Provincial People's Hospital, Changsha 410002, China.
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Li JA, Zhong LL, Li B, Jiang DQ, Zhao YL. Diffuse telangiectasia of the colon: A case report. Medicine (Baltimore) 2020; 99:e21106. [PMID: 32846752 PMCID: PMC7447499 DOI: 10.1097/md.0000000000021106] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
RATIONALE Colonic telangiectasia, also known as colonic angiodysplasia, refers to arteriovenous malformations that occur in the colon, which are common vascular lesions in the GI tract. PATIENT CONCERNS We report a patient, who was admitted to our hospital for colonoscopy. DIAGNOSES Under a microscope, all the segments of the whole colon and the varicose veins showed multiple flaky spider-like telangiectasia changes. The blood vessels were radially distributed and converged in the center. The largest blood vessel was about 10 mm in diameter and had a smooth surface with no ulcers, erosion, or bleeding. INTERVENTIONS It was recommended that the patient undergo a capsule endoscopy to examine small intestine. OUTCOMES The patient did not agree to endoscopy for personal reasons. During the follow-up half a year later, the patient had no melena with normal range of hemoglobin and red blood cell counts. The fecal occult blood test came out negative. LESSONS While the etiology of colonic telangiectasia remains unclear, it is common in the elderly, and is more associated with geriatric conditions and diseases, especially atherosclerotic diseases. Patients who are diagnosed with colonic telangiectasia but are asymptomatic, do not need further treatment. It is usually recommended to monitor the color of stool and check the hemoglobin and fecal occult blood regularly. Colonoscopy is the main method of diagnosis of colonic telangiectasia, and the positive rate is greater than 90%. This procedure should be performed when there is no bleeding or a small amount of bleeding.
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Affiliation(s)
- Jun-An Li
- Gastroenterology and Center of Digestive Endoscopy
| | - Li-Li Zhong
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic
| | | | | | - Yin-Long Zhao
- Gastroenterology and Center of Digestive Endoscopy
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic
- Cardiovascular Surgery
- Department of Nuclear Medicine, The Second Hospital of Jilin University, Changchun, Jilin, P. R. China
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Wang M, Tan J, Chen J, Xie T, Lin LM, Zhong LL, Cai XJ, Wu QS. Three new ester glycosides with cytotoxic activity from the seeds of Caesalpinia sappan. Nat Prod Res 2020; 35:4409-4416. [PMID: 32272852 DOI: 10.1080/14786419.2020.1721488] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Three new ester glycosides, named as Caesateroside A (1), Caesateroside B (2) and Caesateroside C (3) were obtained from the seeds of Caesalpinia sappan. The new structures of compounds 1-3 were elucidated by analyzing their 1 D NMR, 2 D NMR and HR-ESI-MS spectra. Compounds 1-3 showed weak-moderate cytotoxicity against Hela and HepG-2 human cancer cell lines.
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Affiliation(s)
- Min Wang
- Department of Pharmacy, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, China
| | - Juan Tan
- Department of Pharmacy, Renmin Hospital of Wuhan University, Wuhan, China
| | - Jun Chen
- Department of Pharmacy, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, China
| | - Tian Xie
- Department of Respiratory and Critical Care Medicine, Hainan Genaral Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, China
| | - Liang-Mo Lin
- Department of Pharmacy, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, China
| | - Li-Li Zhong
- Department of Pharmacy, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, China
| | - Xing-Jun Cai
- Department of Respiratory and Critical Care Medicine, Hainan Genaral Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, China
| | - Qiong-Shi Wu
- Department of Pharmacy, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, China
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Lin XJ, Zhong LL, Xie YP, Deng ZP. [Expression of interferon-λ1 in respiratory epithelial cells in children with human rhinovirus infection]. Zhongguo Dang Dai Er Ke Za Zhi 2019; 21:1177-1181. [PMID: 31874655 PMCID: PMC7389010] [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] [Received: 06/19/2019] [Accepted: 10/31/2019] [Indexed: 11/12/2023]
Abstract
OBJECTIVE To study the expression of interferon-λ1 (IFN-λ1) in respiratory epithelial cells in children with human rhinovirus (HRV) infection. METHODS Sputum samples and nasopharyngeal swabs were collected from the children who were hospitalized due to acute respiratory infection from February to October, 2017. Bacterial culture was performed, and nucleic acid test was performed for 11 respiratory pathogens. A total of 90 children with positive HRV alone were enrolled as the HRV infection group, and 95 children with positive respiratory syncytial virus (RSV) alone were enrolled as the RSV infection group. A total of 50 healthy children who underwent outpatient physical examination during the same period of time and had negative results for all pathogen tests were enrolled as the healthy control group. Nasopharyngeal swabs were collected from all groups, and quantitative real-time PCR was used to measure viral load and the mRNA expression of IFN-λ1. RESULTS In the HRV infection group, there was no significant difference in the mRNA expression of IFN-λ1 between boys and girls and across all age groups (P>0.05). In the HRV infection group, there was no correlation between the mRNA expression of IFN-λ1 and HRV load (P>0.05). The mRNA expression of IFN-λ1 in the HRV infection group was significantly higher than that in the healthy control group (P<0.05), but significantly lower than that in the RSV infection group (P<0.05). CONCLUSIONS HRV can induce the expression of IFN-λ1 in respiratory epithelial cells, suggesting that IFN-λ1 may play an important role in anti-HRV infection in children.
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Affiliation(s)
- Xiao-Juan Lin
- Department of Pediatrics, Hunan Provincial People's Hospital, Changsha 410005, China.
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17
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Lin XJ, Zhong LL, Xie YP, Deng ZP. [Expression of interferon-λ1 in respiratory epithelial cells in children with human rhinovirus infection]. Zhongguo Dang Dai Er Ke Za Zhi 2019; 21:1177-1181. [PMID: 31874655 PMCID: PMC7389010 DOI: 10.7499/j.issn.1008-8830.2019.12.005] [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] [MESH Headings] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 10/31/2019] [Indexed: 06/10/2023]
Abstract
OBJECTIVE To study the expression of interferon-λ1 (IFN-λ1) in respiratory epithelial cells in children with human rhinovirus (HRV) infection. METHODS Sputum samples and nasopharyngeal swabs were collected from the children who were hospitalized due to acute respiratory infection from February to October, 2017. Bacterial culture was performed, and nucleic acid test was performed for 11 respiratory pathogens. A total of 90 children with positive HRV alone were enrolled as the HRV infection group, and 95 children with positive respiratory syncytial virus (RSV) alone were enrolled as the RSV infection group. A total of 50 healthy children who underwent outpatient physical examination during the same period of time and had negative results for all pathogen tests were enrolled as the healthy control group. Nasopharyngeal swabs were collected from all groups, and quantitative real-time PCR was used to measure viral load and the mRNA expression of IFN-λ1. RESULTS In the HRV infection group, there was no significant difference in the mRNA expression of IFN-λ1 between boys and girls and across all age groups (P>0.05). In the HRV infection group, there was no correlation between the mRNA expression of IFN-λ1 and HRV load (P>0.05). The mRNA expression of IFN-λ1 in the HRV infection group was significantly higher than that in the healthy control group (P<0.05), but significantly lower than that in the RSV infection group (P<0.05). CONCLUSIONS HRV can induce the expression of IFN-λ1 in respiratory epithelial cells, suggesting that IFN-λ1 may play an important role in anti-HRV infection in children.
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Affiliation(s)
- Xiao-Juan Lin
- Department of Pediatrics, Hunan Provincial People's Hospital, Changsha 410005, China.
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Zhang YB, Fei HX, Guo J, Zhang XJ, Wu SL, Zhong LL. Dauricine suppresses the growth of pancreatic cancer in vivo by modulating the Hedgehog signaling pathway. Oncol Lett 2019; 18:4403-4414. [PMID: 31611949 PMCID: PMC6781764 DOI: 10.3892/ol.2019.10790] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 05/13/2019] [Indexed: 12/11/2022] Open
Abstract
Pancreatic cancer is a highly malignant cancer associated with high expression levels of sonic hedgehog signaling molecule (Shh), patched 1 (Ptch1), smoothened frizzled class receptor (Smo) and glioma-associated oncogene family zinc finger 1 (Gli1) in the hedgehog (Hh) signaling pathway. Inhibition of the Hh signaling pathway is a potential therapeutic target for pancreatic cancer. The aim of the present study was to investigate the effects of dauricine in a pancreatic cancer BxPC-3 ×enograft animal model and examine the underlying molecular mechanisms through Hh signaling pathway. High-and low-dose dauricine treatment significantly suppressed tumor growth with no concomitant effect on the spleen index. In addition, dauricine induced apoptosis and cell cycle arrest in pancreatic cancer BxPC-3 cells. The inhibitory effects of dauricine on pancreatic cancer may be mediated by the suppression of the Hh signaling pathway, as indicated by the decreases in the gene and protein expression levels of Shh, Ptch1, Smo and Gli1. The effects of dauricine were similar to those of 5-fluorouracil. Dauricine, a naturally occurring alkaloid, may be a potential anticancer agent for the treatment of pancreatic cancer.
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Affiliation(s)
- Ying-Bo Zhang
- Ultramicropathology Experimental Center, Pathology College, Qiqihar Medical University, Qiqihar, Heilongjiang 161006, P.R. China
| | - Hong-Xin Fei
- Department of Basic Medicine, School of Nursing and Rehabilitation, Xinyu University, Xinyu, Jiangxi 338004, P.R. China
| | - Jia Guo
- Pathogenic Biology and Immunology Experimental Teaching Center, Qiqihar Medical University, Qiqihar, Heilongjiang 161006, P.R. China
| | - Xiao-Jie Zhang
- Ultramicropathology Experimental Center, Pathology College, Qiqihar Medical University, Qiqihar, Heilongjiang 161006, P.R. China
| | - Shu-Liang Wu
- Department of Anatomy, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Li-Li Zhong
- Department of Pathology, The First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang 150040, P.R. China
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Wang W, Xie Y, Chen F, Liu X, Zhong LL, Wang HQ, Li QC. LncRNA MEG3 acts a biomarker and regulates cell functions by targeting ADAR1 in colorectal cancer. World J Gastroenterol 2019; 25:3972-3984. [PMID: 31413531 PMCID: PMC6689807 DOI: 10.3748/wjg.v25.i29.3972] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 06/07/2019] [Accepted: 06/26/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Colorectal cancer (CRC) is the third most prevalent malignancy and has the fourth highest global cancer mortality rate. Early diagnosis and prompt medical attention can improve quality of life and the prognosis of CRC patients. Accumulating evidence reveals that long non-coding RNAs (lncRNAs) function as oncogenes or anti-oncogenes, as well as biomarkers in various cancers.
AIM To investigate the levels and molecular mechanism of the lncRNA maternally expressed gene 3 (MEG3) in CRC.
METHODS The levels of lncRNA MEG3 in CRC tissue, serum and cell line samples were explored via qRT-PCR. The relationship between MEG3 levels and clinicopathological features in CRC was investigated. The diagnostic and prognostic values of serum MEG3 levels were analyzed with ROC curves and Kaplan‑Meier survival curves, respectively.
RESULTS Significant decreased levels of MEG3 existed in CRC tissue, cell lines and serum. CRC patients with down-regulated serum MEG3 levels had larger tumor sizes, and advanced clinical stages. The sensitivity and specificity of serum MEG3 levels in CRC detection was 0.667 and 0.875, respectively. Tumor size, T stages, and serum MEG3 levels are indie factors that produce an effect on CRC patients' prognosis. Kaplan‑Meier survival curves suggested that CRC patients with high levels of MEG3 had a remarkably better overall survival rate.
CONCLUSION LncRNA MEG3 is down-regulated in CRC, and regulates cell functions by targeting adenosine deaminase’s effect on RNA 1 in CRC.
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Affiliation(s)
- Wei Wang
- College of Basic Medical Sciences, China medical University and Department of Pathology, the First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
- Teaching and Research Department of Pathology, Basic Medical College, Heilongjiang University of Traditional Chinese Medicine, Harbin 150040, Heilongjiang Province, China
| | - Ying Xie
- Department of Synopsis of The Golden Chamber, School of Basic Medical Sciences, Heilongjiang University of Traditional Chinese Medicine, Harbin 150040, Heilongjiang Province, China
| | - Fei Chen
- Department of Synopsis of The Golden Chamber, School of Basic Medical Sciences, Heilongjiang University of Traditional Chinese Medicine, Harbin 150040, Heilongjiang Province, China
| | - Xu Liu
- Experiment and Training Center, Heilongjiang University of Traditional Chinese Medicine, Harbin 150040, Heilongjiang Province, China
| | - Li-Li Zhong
- Department of Pathology, the First Clinical Medical College, Heilongjiang University of Traditional Chinese Medicine, Harbin 150040, Heilongjiang Province, China
| | - Hai-Qiang Wang
- Department of Gastroenterology, the First Clinical Medical College, Heilongjiang University of Traditional Chinese Medicine, Harbin 150040, Heilongjiang Province, China
| | - Qing-Chang Li
- College of Basic Medical Sciences, China medical University and Department of Pathology, the First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
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Li JA, Zhong LL, Duan LW, Zhao YL. Non-steroidal anti-inflammatory drugs caused duodenal stenosis. J BIOL REG HOMEOS AG 2019; 33:1183-1185. [PMID: 31304732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
- J A Li
- Gastroenterology and Center of Digestive Endoscopy, The Second Hospital of Jilin University, Changchun, Jilin, P.R. China
| | - L L Zhong
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, The Second Hospital of Jilin University, Changchun, Jilin, P.R. China
| | - L W Duan
- Gastroenterology and Center of Digestive Endoscopy, The Second Hospital of Jilin University, Changchun, Jilin, P.R. China
| | - Y L Zhao
- Department of Nuclear Medicine, The Second Hospital of Jilin University, Changchun, Jilin, P.R. China
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Hu JY, Zheng ZG, Liu N, Zhong LL, Chen RC. [Effect of connecting airbag in different filling state at the front end of piezometric tube in noninvasive ventilation circuit on man-machine synchronization]. Zhonghua Jie He He Hu Xi Za Zhi 2018; 41:709-713. [PMID: 30196604 DOI: 10.3760/cma.j.issn.1001-0939.2018.09.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Objective: To investigate the effect of connecting airbag in different filling state at the front end of piezometric tube in the noninvasive ventilation circuit on pressure transmission and human-machine synchronization. Method: In test 1, the airbag was connected to a piezometric tube which was placed in a closed container, the filling state of the airbag was regulated, and the pressure inside the container was changed to observe the corresponding pressure change in the piezometric tube. In test 2, the airbag in different filling state was connected at the front end of piezometric tube in noninvasive ventilation circuit. Twelve subjects were connected to the ventilator such that dynamic changes in the pressure inside the mask (Pmask) and piezometric tube (Ptube) could be measured. Data with normal distribution was analyzed by t test, while data with abnormal distribution was analyzed by K-W test. Results: In test 1, the pressure inside the container changed between 0 and 50 cmH(2)O(1 cmH(2)O=0.098 kPa), when the big airbag was filled at 1/5, 2/5, 3/5, 4/5, the medium-sized airbag was filled at 3/5, 4/5, 5/5, and the small airbag was filled at 4/5, the pressure inside the piezometric tube changed synchronously with the pressure inside the container with no statistically significant difference(P>0.05). In a state of no filling in the small airbag and the medium-sized airbag, and filled at 1/5 in the small airbag, the pressure inside the piezometric tube no longer changed with the pressure in the container when the pressure reached a certain level .When the small airbag was filled at 1/5, 2/5, 3/5, 5/5, the medium-sized airbag at 1/5, 2/5, and the big airbag at 5/5, and all the airbags were in the state of no filling , the difference in the pressure between the piezometric tube and the container was statistically significant. In test 2, respiratory ventilation parameters were set on 10/4 cmH(2)O-30/14 cmH(2)O , and the connecting airbag at the front end of piezometric tube in noninvasive ventilation circuit. The platform pressure in the mask was slightly higher than that in the piezometer tube, and the baseline pressure in the mask was slightly lower than that of the piezometer tube. When the big airbag was filled at 1/5, 2/5, 3/5, 4/5 and medium-sized airbag at 2/5, 3/5, 4/5, the pressure difference between Pmask and Ptube was less than 0.5 cmH(2)O, which was acceptable clinically. When the big airbag was filled at 1/5, 2/5, 3/5 and the medium-sized airbag at 2/5, 3/5, there was no significant difference in trigger work before and after connecting the airbag at the front end of the piezometric tube(P>0.05). Conclusion: Connecting the airbag at the front end of the piezometric tube could avoid the forming of condensate in piezometric tube. The airbag showed good properties of pressure conductivity under ideal size and filling state.
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Affiliation(s)
- J Y Hu
- First Affiliated Hospital of Guangzhou Medical University (State Key Laboratory of Respiratory Disease), Guangzhou Institute of Respiratory Disease, Guangzhou 510120, China
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Peng F, Zhong LL, Lin XJ, Chen M, Zhou M. [Burkholderia cepacia infection in children: a clinical analysis of 16 cases]. Zhongguo Dang Dai Er Ke Za Zhi 2018; 20:112-115. [PMID: 29429458 PMCID: PMC7389241 DOI: 10.7499/j.issn.1008-8830.2018.02.006] [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] [Received: 11/01/2017] [Accepted: 01/02/2018] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To investigate the distribution characteristics and clinical features of Burkholderia cepacia infection in children. METHODS A retrospective analysis was performed for the clinical data of 16 children with Burkholderia cepacia infection who were hospitalized between June 2012 and September 2017. RESULTS All 16 children with Burkholderia cepacia infection were sporadic cases. A total of 16 strains of Burkholderia cepacia were isolated, among which 8 were detected by sputum culture, 5 were detected by blood culture, 2 were detected by tracheal intubation tip culture, and 1 was detected by lung biopsy culture. Of the 16 children, there were 11 boys and 5 girls, with an age of 5 days to 6 years, and the children aged <1 year accounted for 69%. As for department distribution, 10 children were in the PICU/NICU and 6 were in the general wards. As for clinical manifestations, one child had disseminated intravascular coagulation, and the other 15 children had pulmonary infection, among who 11 had severe pneumonia (8 of them underwent mechanical ventilation during treatment). As for underlying diseases, 2 had severe congenital heart disease, 4 had primary immunodeficiency, 3 were highly suspected of immunodeficiency or inherited metabolic diseases, 1 had tracheal stenosis, 1 had Kawasaki disease, 1 was a preterm infant with bronchopulmonary dysplasia, 1 had severe cleft lip and palate, and 3 had no definite underlying diseases. Of all the children, 7 also had infections with adenovirus and Mycoplasma. The average length of hospital stay was 20.3 days for all children, and 12 were improved and 4 died after treatment. All 16 strains of Burkholderia cepacia had a drug resistance rate of 100% to amikacin and gentamicin and ≥80% to ampicillin/sulbactam and ticarcillin/clavulanic acid, as well as the lowest drug resistance rate to levofloxacin. CONCLUSIONS Burkholderia cepacia is an opportunistic pathogen often found in immunocompromised children and can produce drug resistance. The presence or absence of underlying diseases should be considered during anti-infective therapy. The children with Burkholderia cepacia infection often have a poor prognosis, and an understanding of the disease spectrum of Burkholderia cepacia infection helps with clinical diagnosis and treatment.
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Affiliation(s)
- Fang Peng
- Department of Pediatrics, Hunan Provincial People's Hospital, Changsha 410000, China.
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Chen M, Zhong LL, Huang H, Lin L, Deng HY, Ding XF, Hu X. [Thoracoscopy in diagnosis and treatment of pleural diseases in children]. Zhonghua Er Ke Za Zhi 2017; 55:695-699. [PMID: 28881517 DOI: 10.3760/cma.j.issn.0578-1310.2017.09.014] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Objective: To investigate the value of thoracoscopy in diagnosis and treatment of pleural diseases in children. Method: Clinical manifestations and treatment outcomes of 19 patients who had refractory pleural diseases treated with thoracosocy during May 2011 to August 2016 in Hunan Provincial People's Hospital were retrospectively analyzed. In 19 cases, 15 were male and 4 were female, with an average age of (4.8±2.0) years. Thirteen patients had left pleural lesion, while 5 patients had right lesion, and 1 had bilateral lesions. Result: All cases were successfully treated with thoracoscopy without emergent thoracotomy. Pre- and post operative diagnosis was compatible in 10 cases, including 8 cases of empyema (Streptococcus pneumoniae infection in 6 cases, and Staphylococcus Aureus infection in 2 cases), and 2 cases of tuberculous pleuritis. Nine patients who had not been clearly diagnosed before surgery were diagnosed to be empyema (4 case), tuberculous pleuritic (3 cases), mycoplasma infection (1 case), and foreign body with infection (1 case) by thoracoscopy. The average duration of post-op closed thoracic drainage was (4.7±2.3) days. The average time to get normal temperature was (2.4±2.6) days. And the average length of hospital stay was (6.7±1.8) days. No hemothorax, chylothorax, or need for analgesic occurred. Conclusion: Thoracoscopy can be recommended for diagnosis and treatment of refractory pleural lesions diseases in children, with minimal trauma and complications.
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Affiliation(s)
- M Chen
- Children's Medical Center of Hunan Provincial People's Hospital, Changsha 410009, China
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Xu GY, Hao QQ, Zhong LL, Ren W, Yan Y, Liu RY, Li JN, Guo WW, Zhao H, Yang SM. [ SOX10 mutation is relevant to inner ear malformation in patients with Waardenburg syndrome]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 51:832-837. [PMID: 27938609 DOI: 10.3760/cma.j.issn.1673-0860.2016.11.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To determine the relevance between the SOX10 mutation and Waardenburg syndrome (WS) accompanied with inner ear abnormality by analyzing the inner ear imaging results and molecular and genetic results of the WS patients with the SOX10 mutation. Methods: This study included 36 WS in patients during 2001 and 2015 in the department of otorhinolaryngology head and neck surgery, Chinese Peoples's Liberation Army General Hospital. The condition of the inner ear of each patient was assessed by analyzing HRCT scans of the temporal bone and MRI scans of the brain and internal auditory canal. Meanwhile, the possible pathogenic genes of WS, including SOX10, MITF, and PAX3, were also screened. Patients were divided into two groups according to SOX10 mutation.The Fisher accuracy test was used to determine statistical difference of inner ear deformation incidence between the two groups. Results: Among all 36 patients, 12 were found to have inner ear abnormality. Most abnormalities were posterior semicircular canal deformations, some accompanied with cochlear deformation and an enlarged vestibule. Among all patients, 9 patients were SOX10 heterozygous mutation carriers, among which six showed bilateral inner ear abnormality. Fisher accuracy test results suggested a significant correlation between the SOX10 mutation and inner ear abnormality in WS patients (P=0.036). Conclusion: This study found that WS patients with the SOX10 mutation are more likely to have deformed inner ears when compared to WS patients without the SOX10 mutation.
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Affiliation(s)
- G Y Xu
- Department of Otorhinolaryngology Head and Neck Surgery, Chinese Peoples's Liberation Army General Hospital, 100853 Beijing, China
| | - Q Q Hao
- Department of Otorhinolaryngology Head and Neck Surgery, Chinese Peoples's Liberation Army General Hospital, 100853 Beijing, China
| | - L L Zhong
- Department of Otorhinolaryngology Head and Neck Surgery, Chinese Peoples's Liberation Army General Hospital, 100853 Beijing, China; School of Medical, Nankai University, 300071 Tianjin, China
| | - W Ren
- Department of Otorhinolaryngology Head and Neck Surgery, Chinese Peoples's Liberation Army General Hospital, 100853 Beijing, China
| | - Y Yan
- Department of Otorhinolaryngology Head and Neck Surgery, Chinese Peoples's Liberation Army General Hospital, 100853 Beijing, China
| | - R Y Liu
- Department of Otorhinolaryngology Head and Neck Surgery, Chinese Peoples's Liberation Army General Hospital, 100853 Beijing, China
| | - J N Li
- Department of Otorhinolaryngology Head and Neck Surgery, Chinese Peoples's Liberation Army General Hospital, 100853 Beijing, China
| | - W W Guo
- Department of Otorhinolaryngology Head and Neck Surgery, Chinese Peoples's Liberation Army General Hospital, 100853 Beijing, China
| | - H Zhao
- Department of Otorhinolaryngology Head and Neck Surgery, Chinese Peoples's Liberation Army General Hospital, 100853 Beijing, China
| | - S M Yang
- Department of Otorhinolaryngology Head and Neck Surgery, Chinese Peoples's Liberation Army General Hospital, 100853 Beijing, China
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Tao MT, Xie YP, Liu SP, Chen HF, Huang H, Chen M, Zhong LL. [Expression of interferon-λ1 in respiratory epithelial cells of children with RSV infection and its relationship with RSV load]. Zhongguo Dang Dai Er Ke Za Zhi 2017; 19:677-681. [PMID: 28606236 PMCID: PMC7390299 DOI: 10.7499/j.issn.1008-8830.2017.06.013] [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] [Received: 02/17/2017] [Accepted: 04/19/2017] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To investigate the expression of IFN-λ1 in respiratory epithelial cells of children with respiratory syncytial virus (RSV) infection and its relationship with RSV load. METHODS The nasopharyngeal swabs were collected from the children who were hospitalized with respiratory tract infection from June 2015 to June 2016. A direct immunofluorescence assay was used to detect the antigens of seven common respiratory viruses (including RSV) in the nasopharyngeal swabs. A total of 120 children who were only RSV positive were selected as the RSV infection group. A total of 50 children who had negative results in the detection of all viral antigens were selected as the healthy control group. Fluorescence quantitative real-time PCR was used to determine the RSV load and the expression of IFN-λ1 mRNA in the nasopharyngeal swabs of children in the two groups. RESULTS The expression of IFN-λ1 in the RSV infection group was significantly higher than that in the healthy control group (P<0.05). The expression of IFN-λ1 was positively correlated with RSV load (r=0.56, P<0.05). CONCLUSIONS RSV can induce the expression of IFN-λ1 in respiratory epithelial cells, suggesting that IFN-λ1 may play an important role in anti-RSV infection.
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Affiliation(s)
- Mei-Ting Tao
- Children's Medical Center, Hunan Provincial People's Hospital, Changsha 410005, China.
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Tao MT, Xie YP, Liu SP, Chen HF, Huang H, Chen M, Zhong LL. [Expression of interferon-λ1 in respiratory epithelial cells of children with RSV infection and its relationship with RSV load]. Zhongguo Dang Dai Er Ke Za Zhi 2017; 19:677-681. [PMID: 28606236 PMCID: PMC7390299] [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] [Received: 02/17/2017] [Accepted: 04/19/2017] [Indexed: 12/16/2023]
Abstract
OBJECTIVE To investigate the expression of IFN-λ1 in respiratory epithelial cells of children with respiratory syncytial virus (RSV) infection and its relationship with RSV load. METHODS The nasopharyngeal swabs were collected from the children who were hospitalized with respiratory tract infection from June 2015 to June 2016. A direct immunofluorescence assay was used to detect the antigens of seven common respiratory viruses (including RSV) in the nasopharyngeal swabs. A total of 120 children who were only RSV positive were selected as the RSV infection group. A total of 50 children who had negative results in the detection of all viral antigens were selected as the healthy control group. Fluorescence quantitative real-time PCR was used to determine the RSV load and the expression of IFN-λ1 mRNA in the nasopharyngeal swabs of children in the two groups. RESULTS The expression of IFN-λ1 in the RSV infection group was significantly higher than that in the healthy control group (P<0.05). The expression of IFN-λ1 was positively correlated with RSV load (r=0.56, P<0.05). CONCLUSIONS RSV can induce the expression of IFN-λ1 in respiratory epithelial cells, suggesting that IFN-λ1 may play an important role in anti-RSV infection.
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Affiliation(s)
- Mei-Ting Tao
- Children's Medical Center, Hunan Provincial People's Hospital, Changsha 410005, China.
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Ding XF, Zhang B, Zhong LL, Xie LY, Xiao NG. [Relationship between viral load of human bocavirus and clinical characteristics in children with acute lower respiratory tract infection]. Zhongguo Dang Dai Er Ke Za Zhi 2017; 19:327-330. [PMID: 28302206 PMCID: PMC7390146 DOI: 10.7499/j.issn.1008-8830.2017.03.015] [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] [Received: 09/12/2016] [Accepted: 12/06/2016] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To investigate the prevalence of human bocavirus (HBoV) in children with acute lower respiratory tract infection and to explore the relationship between the viral load of HBoV and the clinical characteristics of acute lower respiratory tract infection in children. METHODS A total of 1 554 nasopharyngeal aspirates from children who were hospitalized due to acute lower respiratory tract infection between March 2011 and March 2014 were collected. Quantitative real-time PCR was used to detect 12 RNA and 2 DNA viruses, adenovirus (ADV) and HBoV, and to measure the viral load of HBoV in HBoV-positive children. A comprehensive analysis was performed with reference to clinical symptoms and indicators. RESULTS In the 1 554 specimens, 1 212 (77.99%) were positive for viruses, and 275 (17.70%) were HBoV-positive. In HBoV-positive cases, 94.9% were aged <3 years, and there were more males than females. In the 275 HBoV-positive cases, 45 (16.36%) had single infection, and 230 (83.64%) had mixed infection. There was no significant difference in viral load between children with single infection and mixed infection (P>0.05). The patients with fever had a significantly higher viral load than those without fever (P<0.05). The children with wheezing had a significantly higher viral load than those without wheezing (P<0.05). There was no significant difference in viral load between children with mild, moderate, and severe acute lower respiratory tract infection (P>0.05). CONCLUSIONS HBoV is one of the important pathogens of acute lower respiratory tract infection in children. Children with a higher viral load of HBoV are more likely to experience symptoms such as fever and wheezing. However, the severity of disease and mixed infection are not significantly related to viral load.
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Affiliation(s)
- Xiao-Fang Ding
- Hunan Provincial People's Hospital, Changsha 410005, China.
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Ding XF, Zhang B, Zhong LL, Xie LY, Xiao NG. [Relationship between viral load of human bocavirus and clinical characteristics in children with acute lower respiratory tract infection]. Zhongguo Dang Dai Er Ke Za Zhi 2017; 19:327-330. [PMID: 28302206 PMCID: PMC7390146] [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] [Received: 09/12/2016] [Accepted: 12/06/2016] [Indexed: 11/12/2023]
Abstract
OBJECTIVE To investigate the prevalence of human bocavirus (HBoV) in children with acute lower respiratory tract infection and to explore the relationship between the viral load of HBoV and the clinical characteristics of acute lower respiratory tract infection in children. METHODS A total of 1 554 nasopharyngeal aspirates from children who were hospitalized due to acute lower respiratory tract infection between March 2011 and March 2014 were collected. Quantitative real-time PCR was used to detect 12 RNA and 2 DNA viruses, adenovirus (ADV) and HBoV, and to measure the viral load of HBoV in HBoV-positive children. A comprehensive analysis was performed with reference to clinical symptoms and indicators. RESULTS In the 1 554 specimens, 1 212 (77.99%) were positive for viruses, and 275 (17.70%) were HBoV-positive. In HBoV-positive cases, 94.9% were aged <3 years, and there were more males than females. In the 275 HBoV-positive cases, 45 (16.36%) had single infection, and 230 (83.64%) had mixed infection. There was no significant difference in viral load between children with single infection and mixed infection (P>0.05). The patients with fever had a significantly higher viral load than those without fever (P<0.05). The children with wheezing had a significantly higher viral load than those without wheezing (P<0.05). There was no significant difference in viral load between children with mild, moderate, and severe acute lower respiratory tract infection (P>0.05). CONCLUSIONS HBoV is one of the important pathogens of acute lower respiratory tract infection in children. Children with a higher viral load of HBoV are more likely to experience symptoms such as fever and wheezing. However, the severity of disease and mixed infection are not significantly related to viral load.
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Affiliation(s)
- Xiao-Fang Ding
- Hunan Provincial People's Hospital, Changsha 410005, China.
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Guo C, Zhong LL, Yi HL, Chen M. [Clinical value of fluorescence lateral flow immunoassay in diagnosis of influenza A in children]. Zhongguo Dang Dai Er Ke Za Zhi 2016; 18:1272-1276. [PMID: 27974121 PMCID: PMC7403077 DOI: 10.7499/j.issn.1008-8830.2016.12.015] [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] [Received: 07/14/2016] [Accepted: 09/27/2016] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To evaluate the clinical value of a new type of fluorescence lateral flow immunoassay in rapid detection of influenza A virus. METHODS A total of 378 samples of nasopharyngeal secretions were collected from 378 children with influenza-like symptoms to detect the influenza A virus by fluorescence lateral flow immunoassay, colloidal gold immunoassay, and RT-PCR between July 2015 and August 2015. RESULTS Of the 378 samples, 81 (21.4%) were positive for influenza A virus by RT-PCR. Compared with RT-PCR, the sensitivities of fluorescence lateral flow immunoassay and colloidal gold immunoassay were 90.1% (73/81) and 75.3% (61/81), respectively, and the specificities were 99.3% (295/297) and 98.3% (292/297), respectively. The average threshold cycle (Ct) value for the positive samples detected by the fluorescence lateral flow immunoassay (30.6) was higher than that for the positive samples detected by the colloidal gold immunoassay (28.7). CONCLUSIONS Compared with colloidal gold immunoassay, fluorescence lateral flow immunoassay has higher sensitivity, specificity, and concordance rate with RT-PCR, suggesting that it can be used for early screening and diagnosis of influenza A.
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Affiliation(s)
- Chun Guo
- Children's Medical Center of Hunan People's Hospital, Changsha 410005, China.
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Liu D, Zhong LL, Li Y, Chen M. [Recurrent fever, hepatosplenomegaly and eosinophilia in a boy]. Zhongguo Dang Dai Er Ke Za Zhi 2016; 18:1145-1149. [PMID: 27817782 PMCID: PMC7389858 DOI: 10.7499/j.issn.1008-8830.2016.11.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 08/16/2016] [Indexed: 06/06/2023]
Abstract
A 2-year-old boy was admitted into the hospital because of cough and fever. Lymph node tuberculosis was noted when he was 2 months old and he was subsequently hospitalized several times because of cough and fever. After hospitalization the laboratory examination showed an increased eosinophia level in blood. The immune function tests shows decreased levels of IgG, IgA, and IgM. The patient had no response to anti-tuberculosis, anti-bacterial, and anti-fungal treatment, resulting in recurrent fever and progressive enlargement of the liver and spleen. Jam-like stools were noted 35 days after admission. B ultrasonography showed suspected intussusception. Laparotomy, reduction of intussusception and ileocecum angioplasty, biopsies of intestinal wall nodules and lymphoglandulae mesentericae, and hepatic biopsy were then performed under general anesthesia. The patient eventually died because of postoperative severe liver damage, disseminated intravascular coagulation and electrolyte disorder. Both the blood culture and hepatic biopsy tests showed Penicillium marneffei infecton. Immunodeficiency gene test was performed on the patient, his bother and their parents. T→G base substitution mutation (IVS1-3 T→G) in the CD40L gene was found in the patient. X-linked hyper-IgM syndrome was thus diagnosed in the patient. His mother was a carrier of the mutated CD40L gene, but his father was normal in the gene test. Hemizygous mutation in the CD40L gene was found in both the patient and his bother.
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Affiliation(s)
- Dan Liu
- Children's Medical Center, Hunan Provincial People's Hospital, Changsha 410005, China.
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Zhong LL, Hao QQ, Ren LL, Guo WW, Yang SM. [Establishment of a mathematical model for calculating cochlear length]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 51:446-50. [PMID: 27345881 DOI: 10.3760/cma.j.issn.1673-0860.2016.06.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To compare the cochlear length of the miniature pig calculated by 3-dimensional reconstruction technique and an Archimedean spiral model, and to evaluate the feasibility of determining the length of the cochlea using a mathematical model. METHODS The temporal bones of three miniature pigs with normal hearing were selected and scanned by micro-CT. The pictures were input into Mimics software, the 3D structure of the inner ear was reconstructed, and the following parameters were determined through Mimics: cochlear length, diameter of each turn, cochlear height, and apical turn angle. The cochlear length was calculated using the Archimedean spiral model. RESULTS The length of the cochlea was (35.30±0.88)mm based on the three-dimensional reconstruction technique compared to (34.85±0.64)mm based on the Archimedean spiral model. The differences between the two values were not statistically significant. The height of the cochlea is (2.64±0.24)mm. The capsule of the cochlea had 3.67 turns. CONCLUSIONS The three-dimensional reconstruction technique provides accurate and reliable results, but the reconstruction process is time-consuming and is unsuitable for clinical application. The Archimedean spiral model method is simple, feasible, reliable, and therefore suitable for clinical applications, in particular to provide references for cochlear implantation surgeries.
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Affiliation(s)
- L L Zhong
- Department of Otorhinolaryngology Head and Neck Surgery, Chinese People's Liberation Army General Hospital, Beijing 100853, China; School of Medical, Nankai University, Tianjin 300071, China
| | - Q Q Hao
- Department of Otorhinolaryngology Head and Neck Surgery, Chinese People's Liberation Army General Hospital, Beijing 100853, China
| | - L L Ren
- Department of Otorhinolaryngology Head and Neck Surgery, Chinese People's Liberation Army General Hospital, Beijing 100853, China
| | - W W Guo
- Department of Otorhinolaryngology Head and Neck Surgery, Chinese People's Liberation Army General Hospital, Beijing 100853, China
| | - S M Yang
- Department of Otorhinolaryngology Head and Neck Surgery, Chinese People's Liberation Army General Hospital, Beijing 100853, China
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Xiao NG, Duan ZJ, Xie ZP, Zhong LL, Zeng SZ, Huang H, Gao HC, Zhang B. Human parainfluenza virus types 1-4 in hospitalized children with acute lower respiratory infections in China. J Med Virol 2016; 88:2085-2091. [PMID: 27197630 PMCID: PMC7166804 DOI: 10.1002/jmv.24580] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/18/2016] [Indexed: 11/09/2022]
Abstract
Human parainfluenza viruses (HPIVs) are an important cause of acute lower respiratory tract infections (ALRTIs). HPIV-4, a newly identified virus, has been associated with severe ALRTIs recently. A total of 771 nasopharyngeal aspirate samples were collected from hospitalized children between March 2010 and February 2011. HPIVs were detected by Nest-PCR, and other known respiratory viruses were detected by RT-PCR and PCR. All amplification products were sequenced. HPIVs were detected in 151 (19.58%) patients, of whom 28 (3.63%) were positive for HPIV-4, 12(1.55%) for HPIV-1, 4 (0.51%) for HPIV-2, and 107 (13.87%) for HPIV-3. Only three were found to be co-infected with different types of HPIVs. All HPIV-positive children were under 5 years of age, with the majority being less than 1 year. Only the detection rate of HPIV-3 had a significant statistical difference (χ2 = 29.648, P = 0.000) between ages. HPIV-3 and HPIV-4 were detected during the summer. Sixty (39.74%) were co-infected with other respiratory viruses, and human rhinovirus (HRV) was the most common co-infecting virus. The most frequent clinical diagnosis was bronchopneumonia, and all patients had cough; some patients who were infected with HPIV-3 and HPIV-4 had polypnea and cyanosis. No significant difference was found in clinical manifestations between those who were infected with HPIV-4 and HPIV-3. Two genotypes for HPIV-4 were prevalent, although HPIV-4a dominated. HPIV-4 is an important virus for children hospitalized with ALRTIs in China. HRV was the most common co-infecting virus. Two genotypes for HPIV-4 are prevalent, HPIV-4a dominated. J. Med. Virol. 88:2085-2091, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Ni-Guang Xiao
- Department of Pediatrics, Hunan Provincial People's Hospital, Hunan Provincial, China
| | - Zhao-Jun Duan
- State Key Laboratory of Molecular Virology and Genetic Engineering, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, China
| | - Zhi-Ping Xie
- State Key Laboratory of Molecular Virology and Genetic Engineering, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, China
| | - Li-Li Zhong
- Department of Pediatrics, Hunan Provincial People's Hospital, Hunan Provincial, China
| | - Sai-Zhen Zeng
- Department of Pediatrics, Hunan Provincial People's Hospital, Hunan Provincial, China
| | - Han Huang
- Department of Pediatrics, Hunan Provincial People's Hospital, Hunan Provincial, China
| | - Han-Chun Gao
- State Key Laboratory of Molecular Virology and Genetic Engineering, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, China
| | - Bing Zhang
- Department of Pediatrics, Hunan Provincial People's Hospital, Hunan Provincial, China.
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Xu Y, Gao AM, Ji LJ, Li X, Zhong LL, Li HL, Zheng DH. All-Trans Retinoic Acid Attenuates Hypoxia-Induced Injury in NRK52E Cells via Inhibiting NF-x03BA;B/VEGF and TGF-β2/VEGF Pathway. Cell Physiol Biochem 2016; 38:229-36. [PMID: 26783748 DOI: 10.1159/000438624] [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] [Accepted: 12/01/2015] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Hypoxia has recently been proposed as one of the most important factors in progressive renal injury. Hypoxia-induced vascular endothelial growth factor (VEGF) expression may play a critical role in maintaining peritubular capillary endothelium in renal disease. This study was designed to investigate the effect and underlying mechanism of all-trans retinoic acid (ATRA) on hypoxia-induced injury in NRK52E cells. METHODS For mimicking hypoxia, cells were treated with 100 µM of cobalt chloride (CoCl2). The cell viability, expression of VEGF, p65, transforming growth factor-β2 (TGF-β2) and serine carboxypeptidase 1 (Scpep1), and nuclear factor of kappaB (NF-x03BA;B) activities after ATRA treatment were determined by MTT, western blot and electrophoretic mobility shift assay. Co-immunoprecipitation analysis was performed to demonstrate whether Scpep1 interacted with TGF-β2. RESULTS It was found that CoCl2 triggered hypoxia injury and significantly reduced cell viability. ATRA pretreatment increased the cell survival rate. Under hypoxic conditions, the expression of VEGF, p65 and TGF-β2 increased. Addition of ATRA significantly attenuated the expression of VEGF, p65 and TGF-β2. There was a corresponding variation of NF-x03BA;B/DNA binding activities. In addition, ATRA stimulated Scpep1 expression under normoxic and hypoxia condition. Furthermore, TGF-β2 interacted with Scpep1. CONCLUSIONS This study indicated that ATRA may attenuate hypoxia-induced injury in NRK52E cells via inhibiting NF-x03BA;B/VEGF and TGF-β2/VEGF pathway.
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Affiliation(s)
- Yong Xu
- Department of Nephrology, Huai'an Hospital Affiliated to Xuzhou Medical College and Huai'an Second Hospital, Huai'an, China
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Zhou ZG, Zhang CY, Fei HX, Zhong LL, Bai Y. Phenolic alkaloids from Menispermum dauricum inhibits BxPC-3 pancreatic cancer cells by blocking of Hedgehog signaling pathway. Pharmacogn Mag 2015; 11:690-7. [PMID: 26600712 PMCID: PMC4621636 DOI: 10.4103/0973-1296.165548] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Background: The Hedgehog (Hh) signaling pathway plays an important role in pancreatic cancer (PC) cells. Phenolic alkaloids from Menispermum dauricum (PAMD), a traditional Chinese medicine used for the treatment of immune disorders, have been reported to have antitumor activity recently. Objective: To investigate the efficacy and mechanism of PAMD against PC cell BxPC-3. Materials and Methods: F assay was used to assess cell proliferation inhibition of PAMD; the apoptotic induction and cell cycle arrest was detected by flow cytometry; the BxPC-3 xenograft was established to evaluate the tumor growth inhibition of PAMD; hematoxylin-eosin staining was applied to analyze the pathological morphology of tumor tissues; immunohistochemistry (IHC) and Western blot was adopted to detect the protein levels; quantitative real-time polymerase chain reaction was used to determine the mRNA expressions. Results: PAMD shows time-and dose-dependent proliferation inhibition on the BxPC-3 cell, induced G0/G1 phase arrest and cell apoptosis in vitro. PAMD also showed better inhibition of tumor growth and a preferable safety profile compared with chemotherapeutic regimen 5-fluoro-2, 4 (1 H, 3 H) pyrimidinedione in BxPC-3 xenograft in vivo. Furthermore, PAMD directly decreases the protein and mRNA levels of Sonic Hedgehog (Shh) and its downstream transcription factor Gli-1 in the BxPC-3 tumor tissues. Conclusion: The treatment of PAMD displayed Hh signaling pathway blockade through decreasing the protein and mRNA levels of Shh and its downstream transcription factor Gli-1, suggesting a promising strategy in treating human PC.
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Affiliation(s)
- Zhong-Guang Zhou
- Research Institute of Traditional Chinese Medicine, Heilongjiang, China
| | - Chao-Ying Zhang
- The Fourth Affiliated Hospital, Harbin Medical University, Heilongjiang, China
| | - Hong-Xin Fei
- Research Institute of Traditional Chinese Medicine, Heilongjiang, China ; Department of Qiqihar Medical University, Basic Medicine, Heilongjiang, China
| | - Li-Li Zhong
- Department of Pathology, The First Affiliated Hospital, Heilongjiang, China
| | - Yun Bai
- Basic Medical College, Heilongjiang University of Chinese Medicine, Heilongjiang, China
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Zeng SZ, Xiao NG, Zhong LL, Yu T, Zhang B, Duan ZJ. Clinical features of human metapneumovirus genotypes in children with acute lower respiratory tract infection in Changsha, China. J Med Virol 2015; 87:1839-45. [PMID: 25950091 PMCID: PMC7167189 DOI: 10.1002/jmv.24249] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/23/2015] [Indexed: 01/14/2023]
Abstract
To explore the epidemiological and clinical features of different human metapneumovirus (hMPV) genotypes in hospitalized children. Reverse transcription polymerase chain reaction (RT‐PCR) or PCR was employed to screen for both hMPV and other common respiratory viruses in 2613 nasopharyngeal aspirate specimens collected from children with lower respiratory tract infections from September 2007 to February 2011 (a period of 3.5 years). The demographics and clinical presentations of patients infected with different genotypes of hMPV were compared. A total of 135 samples were positive for hMPV (positive detection rate: 5.2%). Co‐infection with other viruses was observed in 45.9% (62/135) of cases, and human bocavirus was the most common additional respiratory virus. The most common symptoms included cough, fever, and wheezing. The M gene was sequenced for 135 isolates; of these, genotype A was identified in 72.6% (98/135) of patients, and genotype B was identified in 27.4% (37/135) of patients. The predominant genotype of hMPV changed over the 3.5‐year study period from genotype A2b to A2b or B1 and then to predominantly B1. Most of clinical features were similar between patients infected with different hMPV genotypes. These results suggested that hMPV is an important viral pathogen in pediatric patients with acute lower respiratory tract infection in Changsha. The hMPV subtypes A2b and B1 were found to co‐circulate. The different hMPV genotypes exhibit similar clinical characteristics. J. Med. Virol. 87:1839–1845, 2015. © 2015 Wiley Periodicals, Inc.
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Affiliation(s)
- Sai-Zhen Zeng
- Hunan provincial People's Hospital, Changsha, China.,National Institute for Viral Disease Control and Prevention, China CDC, Beijing, China
| | | | - Li-Li Zhong
- Hunan provincial People's Hospital, Changsha, China
| | - Tian Yu
- Hunan provincial People's Hospital, Changsha, China
| | - Bing Zhang
- Hunan provincial People's Hospital, Changsha, China
| | - Zhao-Jun Duan
- National Institute for Viral Disease Control and Prevention, China CDC, Beijing, China
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An YF, Zhong LL, Jiang DP. Micro-Raman spectral characteristics and implication of FeS2 from Augen granites in west of Guangdong. Guang Pu Xue Yu Guang Pu Fen Xi 2014; 34:2439-2443. [PMID: 25532341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Some FeS2 samples among Augen granite from Guanshanzhang mass in the west of Guangdong Province were retrieved to characterize the spectral signature of Raman. The results show that three distinct scattering modes active of Fe-[S2]2- Liberational Motion (Eg), Fe-[S2]2- Stretching Motion (Ag) and S--S Stretching Motion (Tg) are observed from all samples. Detailed analyses indicate that Raman shift (Δυ), Modes intensity (I) and full width at half maximum (FWHM) are different between each type pyrite. The spectra show that there are three peaks respectively about 318 cm(-1) (Δυ1), 381 cm(-1) (Δυ1) and 440 cm(-1) (Δυ1) in Banded pyrite and three peaks in others samples about 344 cm(-1) (Δυ1), 379 cm(-1) (Δυ1) and 430 cm(-1) (Δυ1). Under compression to Alterated pyrite, all modes (Eg, Ag and Tg) shift continuously to higher frequencies from Deformed samples to Euhedral type. Eg mode is much intenser than Ag mode as well as the latter is intenser than Tg mode too in Banded samples (I(Eg) >> I(Ag) >> I(Tg)), the intensity of Ag mode is higher than Eg mode, and the latter is much higher than Tg mode in other samples (I(Ag) > I(Eg) >> I(Tg)). Compared with Alterated pyrite, all modes of Eg, Ag and Tg intense continuously to higher frequencies from Euhedral samples to Deformed type. Those spectral characteristics above evidence that, the Raman shift and intensity of Banded samples is similar to marcasite, while those of others show characteristics of the pyrite. The crystallization temperature of Euhedral pyrite is higher than Deformed as well as Euhedral is higher than Alterated too. The formation pressure of Euhedral samples is higher than Alterated pyrite the same as Deformed pyrite hingher than Euhedral one too. Thus, The authors' studies suggest that the forming conditions of FeS2 in Guanshanzhang mass experienced marcasite period-->high-pressure pyrite period--> high-temperature pyrite period-->Alterated pyrite period.
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Liu D, Li Y, Zhong LL, Tan YP. [Effects of suplatast tosilate on airway inflammation and interleukin-5 in asthmatic rats]. Zhongguo Dang Dai Er Ke Za Zhi 2014; 16:759-763. [PMID: 25008888] [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: 06/03/2023]
Abstract
OBJECTIVE To study the effects of suplatast tosilate (IPD) on the airway inflammation and expression of interleukin-5 in asthmatic rats. METHODS Fifty adult male Sprague-Dawley rats (4-week- old) were randomly assigned to five groups: placebo control, untreated asthma, budesonide(BUD)-treated asthma , early or late IPD intervention group (n=10 rats each). Asthmatic mode was prepared by ovalbumin sensitizion and challenge. Inflammatory cells and the percentage of EOS were detected in bronchoalveolar lavage fluid (BALF). The lung tissues were removed to detect the lung histomorphology. Gene expression of IL-5 was measured by reverse transcription-polymerase chain reaction (RT-PCR). Levels of interleukin 5 (IL-5) in BALF were measured using ELISA. RESULTS The inflammatory cells and the percentage of EOS in BALF, IL-5 levels in BALF and IL-5 mRNA expression in the lung tissues were obviously higher in the untreated asthma group than the control group (P<0.05), while the parameters in the IPD or BUD-treated asthma groups were significantly lower than the untreated asthma group (P<0.05). CONCLUSIONS IPD treatment can alleviate airway inflammation in asthmatic rats, possibly through inhibiting IL-5 mRNA transcripts.
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Affiliation(s)
- Dan Liu
- Department of Pediatrics, Hunan People's Hospital, Changcha 410005, China.
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Ding XF, Zhong LL, Zhang B, Lin L, Huang H, Liang M. [Clinical features and pathogens of plastic bronchitis in children: an analysis of 9 cases]. Zhongguo Dang Dai Er Ke Za Zhi 2014; 16:729-733. [PMID: 25008882] [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: 06/03/2023]
Abstract
OBJECTIVE To study the clinical features and pathogens of plastic bronchitis in children. METHODS A retrospective analysis was performed on the clinical data of 9 children who were diagnosed with plastic bronchitis between January 2011 and December 2012. RESULTS Plastic bronchitis began with a fever and cough in all cases, followed by progressive dyspnea on days 1-3 of onset; unilateral or bilateral decreased breath sounds and hepatosplenomegaly were found; complications included respiratory failure (6 cases), toxic encephalopathy (6 cases), toxic hepatitis (7 cases), shock (3 cases), heart failure (3 cases), and renal failure (2 cases). Chest X-ray or chest CT showed single and multiple lobar or segmental consolidation and atelectasis, as well as pleural effusion (4 cases). The bronchofibroscopy revealed some grey-white mucus plugs that blocked bronchial openings and aspirates of bronchial shape. Influenza viruses (IFVs) were detected in all cases, including IFV-A (6 cases, 67%) and IFV-B (3 cases, 33%). Mixed infection with IFV-A and Mycoplasma pneumoniae (MP)/bacteria was found in 50% of all cases. In the three cases of IFV-B infection, one was complicated by MP infection. Nine patients were given treatment of antibiotics, hormones, gamma globulin and necessary respiratory support, and also were given removal of endogenous foreign body by bronchoscopy. Five patients were given antiviral therapy of oseltamivir. Seven cases cured, and 2 died. CONCLUSIONS Plastic bronchitis and severe pneumonia are similar in clinical manifestations. IFVs are the main pathogen. In addition to anti-infection treatment, hormone, gamma globulin, respiratory support, and other conventional treatments, endogenous foreign body removal by bronchofibroscopy and early antiviral therapy with oseltamivir have good efficacy.
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Affiliation(s)
- Xiao-Fang Ding
- Pediatric Medical Center, Hunan Provincial People's Hospital, Changsha 410005, China.
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Zhang AM, Xu J, Wang JM, Huang FR, Zhong LL, Lin L, Yue SJ. [Application of fiberoptic bronchoscopy in the diagnosis and treatment of neonatal respiratory diseases]. Zhongguo Dang Dai Er Ke Za Zhi 2014; 16:306-308. [PMID: 24661527] [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: 06/03/2023]
Affiliation(s)
- Ai-Min Zhang
- Division of Neonatology, Xiangya Hospital, Central South University, Changsha 410008, China
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Zeng SZ, Xiao NG, Xie ZP, Xie GC, Zhong LL, Wang J, Huang H, Zhang B, Duan ZJ. Prevalence of human rhinovirus in children admitted to hospital with acute lower respiratory tract infections in Changsha, China. J Med Virol 2014; 86:1983-9. [PMID: 24390928 PMCID: PMC7166386 DOI: 10.1002/jmv.23861] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/08/2013] [Indexed: 01/08/2023]
Abstract
Human rhinovirus (HRV) is a causative agent of acute respiratory tract infections. This study analyzed the prevalence and clinical characteristics of three HRV groups (HRV‐A, ‐B, and ‐C) among 1,165 children aged 14 years or younger who were hospitalized with acute lower respiratory tract infection in China. PCR or reverse transcription‐PCR was performed to detect 14 respiratory viruses in nasopharyngeal aspirates collected from September 2007 to August 2008 in Changsha, China. HRV was detected in 202 (17.3%) of the 1,165 children; 25.3% of the HRV‐positive children were 13–36 months of age (χ2 = 22.803, P = 0.000). HRV was detected year round and peaked between September and December. Fifty‐three percent of the HRV‐positive samples were also positive for other respiratory viruses; respiratory syncytial virus (RSV) was the most common secondary virus. Phylogenetic analysis using the VP4/VP2 region grouped the HRV‐positive strains as follows: 101 HRV‐A (50.0%), 21 HRV‐B (10.4%), and 80 HRV‐C (39.6%). HRV‐A infections occurred predominantly in spring and autumn, and the peak prevalence of HRV‐C was in early winter and late autumn. HRV‐B infections were less common in spring (χ2 = 31.914, P = 0.000). No significant difference in clinical severity or presentation was found between patients with HRV single infection and HRV co‐detections. Furthermore, the clinical characterizations did not differ among the three HRV species. These results suggest that HRV‐C is an important viral agent along with HRV‐A and HRV‐B and that among hospitalized children with acute lower respiratory tract infection in China, the three HRV genotypes have similar clinical characteristics. J. Med. Virol. 86:1983–1989, 2014. © 2014 Wiley Periodicals, Inc.
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Affiliation(s)
- Sai-Zhen Zeng
- The People's Hospital of Hunan Province, Changsha, 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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Xie LY, Zhong LL, Zhang B, Duan ZJ, Xie ZP, Gao HC, Chen QQ, Deng ZH, Lin L, Gao XQ, Xiao NG. [Virus detection in bronchoalveolar lavage fluid of 122 children with severe pneumonia]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 2013; 27:95-97. [PMID: 24044210] [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: 06/02/2023]
Abstract
OBJECTIVE To investigate the prevalence of viral pathogen in children with severe pneumonia in Hunan. METHOD Bronchoalveolar lavage fluid [BALF] were collected from 122 hospitalized children with severe pneumonia in People's Hospital of Hunan province from January 2011 to December 2011. Nested- or reverse transcription Polymerase chain reaction (PCR or RT-PCR) was used to screen Adenovirus (ADV), Human Bocavirus (HBoV), Parainfluenzaviruses1-4 (PIV1-4), Human Respiratory Syneytial virus (RSV), Influenza virus A (IFVA), Influenza virus B (IFVB), Human Rhinovirus(HRV), Human Metapneumovirus (HMPV), human coronaviruses NL63 and HKU1 (HCoV-NL63, HCoV- HKU1). RESULTS Among the 122 bronchoalveolar lavage fluid, viral agents were detected in 60 samples(49.1%), among which ADV (40.98%) was the most common virus, followed by RSV (7.37%) and HBoV (7.37%). Two viruses were detected in 21 individual (35%) samples, of which 20 were dual positive for ADV (40%). CONCLUSION ADV is the most frequently detected viral etiology of severe pneumonia in children in Hunan during this year. And its Coinfection with other respiratory viruses was common.
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Affiliation(s)
- Le-Yun Xie
- The First Affiliated Hospital of Hunan Normal University, Changsha 410000, China
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Huang H, Zhong LL, Peng L, Li J, Lin L. [Levels of interleukin-4 and interferon-gamma in the bronchoalveolar lavage fluid of children with refractory Mycoplasma pneumoniae pneumonia]. Zhongguo Dang Dai Er Ke Za Zhi 2012; 14:581-584. [PMID: 22898277] [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: 06/01/2023]
Abstract
OBJECTIVE To measure levels of interleukin-4 (IL-4) and interferon-gamma (INF-γ) in the bronchoalveolar lavage fluid (BALF) of children with refractory Mycoplasma pneumoniae pneumonia (RMPP), and to investigate changes in local Th1-Th2-type cytokine levels in children with RMPP and their significance. METHODS A total of 42 children with RMPP were divided into atopic (n=11) and non-atopic groups (n=31) according to whether they had eczema, allergic rhinitis, urticaria, and family history of allergic disease. The study also included a control group of 12 children with bronchial foreign bodies who underwent foreign body removal and were re-examined by fiberoptic bronchoscopy four weeks later. The different cells in BALF from all children were analyzed, and the levels of IL-4 and INF-γ in BALF were measured using enzyme-linked immunosorbent assay. RESULTS Compared with the control group, the total number of cells in BALF from children with RMPP increased significantly (P<0.05), the increase mainly accounted for by neutrophils (P<0.01), and levels of IL-4 and INF-γ in BALF from children with RMPP increased significantly (P<0.05). Compared with the control group, levels of IL-4 and INF-γ in BALF in the atopic group increased significantly (P<0.05). The level of INF-γ in BALF in the non-atopic group also increased significantly (P<0.05). There were no significant differences in INF-γ/IL-4 ratio among all groups (P>0.05). CONCLUSIONS Significant increase in cell numbers, especially neutrophils, as well as IL-4 and INF-γ levels, can be seen in BALF from children with RMPP, but there is no change to the INF-γ/IL-4 ratio. This indicates a significant local inflammatory response in children with RMPP, but there is no evidence of Th2-dominated inflammatory response.
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Affiliation(s)
- Han Huang
- Department of Pediatrics, Hunan Provincial People's Hospital, Changsha 410005, China
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Ding XF, Zhang B, Zhong LL, Xiao NG, Zhou QH, Duan ZJ, Xie ZP, Gao HC. [Viral etiology and risk factors for severe community-acquired pneumonia in children]. Zhongguo Dang Dai Er Ke Za Zhi 2012; 14:449-453. [PMID: 22738454] [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: 06/01/2023]
Abstract
OBJECTIVE To study the virus spectrum of severe community-acquired pneumonia (CAP) and risk factors for the disease in children. METHODS Respiratory secretion specimens were collected from 1096 children hospitalized with CAP from June 2007 to November 2008, including 100 cases of severe CAP. Respiratory viruses were detected by PCR, nest-PCR or RT-PCR. Clinical data on the children were analyzed by univariate and multivariate logistic regression analysis for examining risk factors for severe CAP. RESULTS Viral pathogens were isolated from 82 (82%) of the 100 cases with severe CAP. RSV was the most common (37%), followed by HBoV (25%) and HRV (18%). Mixed infection was noted in 32 cases (32%). The presence of underlying diseases (OR=6.623, P<0.01) and RSV infection (OR=1.672, P<0.05) were risk factors for severe CAP in children, while age was a protective factor (OR=0.475, P<0.01). CONCLUSIONS RSV is the most frequent viral pathogen in children with severe CAP. The presence of underlying diseases and RSV infection may be risk factors for severe CAP, while age is a protective factor.
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Affiliation(s)
- Xiao-Fang Ding
- Hunan Provincial People's Hospital, Changsha 410005, China
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Zhang F, Zhang B, Xie ZP, Gao HC, Zhao X, Zhong LL, Zhou QH, Hou YD, Duan ZJ. [Prevalence and clinical characteristics of coronavirus NL63 infection in children hospitalized for acute lower respiratory tract infections in Changsha]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 2012; 26:133-135. [PMID: 23002556] [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: 06/01/2023]
Abstract
OBJECTIVE The main objective of this study was to explore the prevalence and clinical characteristics of human coronavirus NL63 infection in hospitalized children with acute lower respiratory tract infection (ALRTI) in Changsha. METHODS Nasopharyngeal aspirates (NPA) samples were collected from 1185 hospitalized children with ALRTI at the People's Hospital of Hunan province, between September 2008 and October 2010. Reverse transcriptase polymerase chain reaction (RT-PCR) was employed to screen for coronavirus NL63, which is a 255 bp fragment of a part of N gene. All positive amplification products were confirmed by sequencing and compared with those in GenBank. RESULTS The overall frequency of coronavirus NL63 infection was 0.8%, 6 (60%) out of the coronavirus NL63 positive patients were detected in summer, 2 in autumn, 1 in spring and winter, respectively. The patients were from 2 months to two and a half years old. The clinical diagnosis was bronchopneumonia (60%), bronchiolitis (30%), and acute laryngotracheal bronchitis (10%). Four of the 10 cases had critical illness, 4 cases had underlying diseases, and 7 cases had mixed infection with other viruses. The homogeneity of coronavirus NL63 with those published in the GenBank at nucleotide levels was 97%-100%. CONCLUSION Coronavirus NL63 infection exists in hospitalized children with acute lower respiratory tract infection in Changsha. Coronavirus NL63 infections are common in children under 3 years of age. There is significant difference in the infection rate between the boys and the girls: the boys had higher rate than the girls. The peak of prevalence of the coronavirus NL63 was in summer. A single genetic lineage of coronavirus NL63 was revealed in human subjects in Changsha. Coronavirus NL63 may also be one of the lower respiratory pathogen in China.
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Affiliation(s)
- Fei Zhang
- University of South China, Hengyang, 421001 China
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Luo R, Zhong LL, Yi HL, Tan YP, Chen M, Li Y. [Results of skin prick test in young children with wheezing or allergic diseases]. Zhongguo Dang Dai Er Ke Za Zhi 2012; 14:282-284. [PMID: 22537958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
OBJECTIVE To study the characteristics of allergic reactions to common aeroallergens in young children with wheezing or allergic diseases by examining the results of skin prick test in children under 5 years old. METHODS A total of 196 children under 5 years old, from a district of Changsha City sampled between September 1 to December 31, 2010, were assigned into two groups according to the presence of wheezing or allergic diseases: allergen screening (n=102) and control (n=94). Skin prick tests were performed on both groups. RESULTS The positive rate of skin prick test in the allergen screening group was 61.8% (63/102), and this was significantly higher than in the control group (9.6%, 9/94; P<0.05). In the allergen screening group, the positive rate of skin prick test in children with both recurrent wheezing and allergic rhinitis was significantly higher than in children with wheezing alone (P<0.05). The frequency of wheezing was positively correlated with a positive skin prick test (r=0.91; P<0.05). The positive rate of skin prick test for mites was significantly higher than for other aeroallergens (24.2% vs 3.5%; P<0.05) in the allergen screening group. Skin prick testing of the children for dermatophagoides farinae showed a higher positive rate than for dermatophagoides pteronyssinus (50.0% vs 14.7%; P<0.05). CONCLUSIONS Wheezing in early childhood may be associated with the occurrence of asthma. Skin prick testing contributes to the diagnosis of allergic diseases and assessment of allergic reactions to aeroallergens in children with wheezing.
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MESH Headings
- Asthma/etiology
- Child, Preschool
- Female
- Humans
- Infant
- Infant, Newborn
- Male
- Respiratory Sounds/diagnosis
- Respiratory Sounds/immunology
- Rhinitis, Allergic, Perennial/diagnosis
- Rhinitis, Allergic, Perennial/immunology
- Rhinitis, Allergic, Seasonal/diagnosis
- Rhinitis, Allergic, Seasonal/immunology
- Skin Tests
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Affiliation(s)
- Rui Luo
- Department of Pediatrics, First Affiliated Hospital of Hunan Normal University, Changsha, China
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Zhao X, Zhang B, Duan ZJ, Xie ZP, Gao HC, Xiao NG, Zhong LL, Zhou QH, Zhang F, Zhang J, Cao CQ. [Molecular epidemiological and clinical feature of human metapneumovirus in children with acute lower respiratory tract infection in Changsha area from 2007 to 2011]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 2012; 26:99-101. [PMID: 23002544] [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: 06/01/2023]
Abstract
OBJECTIVE To understand the epidemiological characteristics of human metapneumovirus (hMPV) infection in children with acute lower respiratory tract infection (ALRTI) in Changsha area, China. METHODS A total of 2613 nasopharyngeal aspirate (NPA) specimens were collected from hospitalized children with ARTIs between September 2007 and February 2011 (a period of 3.5 years) in Changsha area, Hunan Province, China. Respiratory specimens were screened for hMPV M gene by reverse-transcription polymerase chain reaction (RT-PCR). All RT-PCR positive' amplification products were confirmed by sequencing or analyzed and compared with those in GenBank known hMPV reference strain. RESULTS hMPV was detected in 135 (5.2%) out of the 2613 children. The detected rate was significantly different between male and female (chi2 = 8.007, P = 0.003). The majority of the hMPV-positive patients (63.2%) were 0-1 year old infants. The majority of hMPV-positive patients were detected during spring season. Seasonal distribution showed that subtype A2b circulated predominantly in winter and spring, subtype B2 circulated predominantly in summer and spring. The most common genotype in 135 hMPV-positive patients were A and B in human subjects in Changsha. The predominant genotype of hMPV changed over the 3.5 year study period from genotype A2b to combined A2b and B2, and to B2. The 66 (48.9%) out of the 135 hMPV-positive patients were found to be co-infected with other respiratory viruses, and human bocavirus (HBoV) was the most common additional respiratory virus. CONCLUSION These data suggest that some cases of acute lower respiratory infection in young children in Changsha area are related to hMPV and the majority of children infected with hMPV were less than 1 years old, the detected rate of boys was higher than that of girls. It circulated predominantly in spring. The subtype A2b genetic lineage and the subtype B1 genetic lineage of hMPV were revealed alternately in human subjects in Changsha area and the hMPV exhibited high co-infection rate with other respiratory viruses.
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Affiliation(s)
- Xin Zhao
- The First Affiliated Hospital of Hunan Normal University, Changsha 410000, China
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Xiao NG, Zhang B, Duan ZJ, Xie ZP, Zhou QH, Zhong LL, Gao HC, Ding XF, Zeng SZ, Huang H, Hou YD. [Viral etiology of 1165 hospitalized children with acute lower respiratory tract infection]. Zhongguo Dang Dai Er Ke Za Zhi 2012; 14:28-32. [PMID: 22289748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
OBJECTIVE To explore the viral etiology of acute low respiratory tract infection (ALRTI) among hospitalized children in Changsha of Hunan Province of China. METHODS Nasopharyngeal aspirates were collected from 1165 hospitalized children with ALRTI in Changsha from September 2007 to August 2008. Respiratory syncytin virus (RSV), human rhinovirus (HRV), influenza virus A (IFVA), influenza virus B (IFVB), parainfluenza 1-3 (PIV 1-3), human metapneumovirus (hMPV), human coronaviruses NL63 (HCoV-NL63), and human coronaviruses HKU1 (HCoV-HKU1) were detected by reverse transcription polymerase chain reaction (RT-PCR). Adenovirus (ADV) and human bocavirus (HBoV) were detected by standard polymerase chain reaction (PCR). WU polyomaviruses (WUPyV) and KI polyomaviruses(KIPyV) were detected by nested PCR. The positive samples further underwent genetic sequencing. RESULTS Among the 1165 nasopharyngeal aspirates, viruses were detected in 871 samples (74.76%), among which RSV (27.03%) was the most common virus, followed by HRV (17.33%), PIV3 (13.73%), HBoV (8.67%) and hMPV (6.52%). The overall positive rate of viral detection showed no significant differences between males and females (X2=2.241, P=0.134), whereas the positive rates of PIV3, hMPV, and HBoV in males were higher than in females. The positive rate of viral detection showed significant differences among different age groups (X2=10.934, P=0.027), and the highest positive rate was noted in the age group of 6 months to 1 year. Furthermore, the overall positive rate of viral detection showed a significant difference in term of seasonal distribution, with a peak prevalence in winter. CONCLUSIONS Virues predominate in the etiology of pediatric ALRTI in Changsha, and RSV, HRV and PIV3 are the main viruses for ALRTI. HBoV and hMPV have become increasingly important. Viral infection-associated ALRTI shows a prevail in the age group of 6 months to 1 year as well as in winter.
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Affiliation(s)
- Ni-Guang Xiao
- Department of Pediatrics, People's Hospital of Hunan Province, Changsha 410005, China
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Li WK, Li Y, Zhong LL. [Effects of all-trans retinoic acid on airway responsiveness and airway remodeling in rats with asthma]. Zhongguo Dang Dai Er Ke Za Zhi 2011; 13:827-831. [PMID: 22000442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
OBJECTIVE To study the effects of alltrans retinoic acid (ATRA) on airway responsiveness, airway remodeling and expression of matrix metalloproteinase-9 (MMP-9) protein in rats with asthma. METHODS Forty rats were randomly divided into five groups: asthma model, normal saline (control), ATRA treatment, cotton oil treatment and budesonide treatment (n=8 each). Asthma was induced by ovalbumin sensitization and challenge in the asthma model, and the ATRA, cotton oil or budesonide treatment groups. ATRA (50 μg/kg), cotton oil (1 mL) or budesonide (0.32 mg/kg) was administered before ovalbumin challenge in the three treatment groups. Airway responsiveness was assessed. The lung tissues were sampled to detect airway remodeling and the expression of MMP-9 protein by immunohistochemistry. RESULTS The expression of MMP-9 in lung tissues in the ATRA treatment group was significantly higher than that in the control group, but the airway responsiveness in the ATRA treatment group was not significantly different from that in the control group. The airway responsiveness and the expression of MMP-9 in lung tissues were significantly reduced in the ATRA treatment group compared with the asthma model group. The airway remodeling was significantly improved in the ATRA treatment group compared with the asthma model group. CONCLUSIONS ATRA may alleviate airway hyperresponsiveness and airway remodeling possibly through decreasing the protein expression of MMP-9 in rats with asthma.
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Affiliation(s)
- Wen-Kai Li
- Department of Pediatrics, Hunan People's Hospital, Changsha, China
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Ding XF, Zhong LL, Zhang B, Li J. [Protective effects of lidocaine on hyperoxia-exposed type Ⅱalveolar epithelial cells from premature rats]. Zhongguo Dang Dai Er Ke Za Zhi 2011; 13:313-316. [PMID: 21507302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
OBJECTIVE To investigate the effects of lidocaine on apoptosis and proliferation of hyperoxia-exposed type Ⅱalveolar epithelial cells (AECⅡ) from premature rats. METHODS Primary cultured AEC Ⅱ isolated from premature rats were randomly divided into four groups: air, air+ lidocaine (20 μg/mL), 95%O2/5%CO2, and 95%O2/5%CO2+ lidocaine. The cells in each group were collected 24 hrs after culture in ordinary incubators (37℃,5%CO2). The proliferation and apoptosis of AEC Ⅱ were detected by flow cytometry. Protein levels of proliferating cell nuclear antigen (PCNA) were measured by Western blot. RESULTS The apoptosis rate of AECⅡincreased, the percentages of G2/M and S phase cells decreased and the protein levels of PCNA decreased significantly in the group exposed to 95%O2/5%CO2 compared with the group exposed to air (P<0.01). Lidocaine treatment decreased apoptosis rate of AECⅡ, increased percentage of G2/M and S phase cells, and increased protein levels of PCNA. CONCLUSIONS Hyperoxia can increase apoptosis and inhibit proliferation of AECⅡ in premature rats. Lidocaine may have protective effects against the AECⅡ injuries.
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Affiliation(s)
- Xiao-Fang Ding
- Department of Pediatrics, People's Hospital of Hunan, Changsha 410005, China
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