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Zhang J, Yan R, Xu S, Shao B, Dou Y. Short-term lumbar disc and lumbar stability changes of one-hole split endoscope technique treatment of spinal stenosis. BMC Musculoskelet Disord 2024; 25:325. [PMID: 38659005 PMCID: PMC11040931 DOI: 10.1186/s12891-024-07443-9] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 04/15/2024] [Indexed: 04/26/2024] Open
Abstract
OBJECTIVE Investigating the early biomechanical effects of the one-hole split endoscope (OSE) technique on lumbar spine after decompression surgery. METHODS A retrospective analysis was conducted on 66 patients with lumbar spinal stenosis (LSS) who underwent OSE technique surgery at the affiliated hospital of Binzhou Medical University from September 2021 to September 2022. The patients had complete postoperative follow-up records. The mean age was (51.73 ± 12.42) years, including 33 males and 33 females. The preoperative and postoperative imaging data were analyzed, including disc height (DH), foraminal height (FH), lumbar lordosis angle (LLA), changes in disc angle, anterior-posterior translation distance, and lumbar intervertebral disc Pfirrmann grading. The visual analogue scale (VAS) was applied to evaluate the severity of preoperative, postoperative day 1, postoperative 3 months, and final follow-up for back and leg pain. The Oswestry Disability Index (ODI) was applied to assess the functionality at all the listed time points. The modified MacNab criteria were applied to evaluate the clinical efficacy at the final follow-up. RESULTS In 66 patients, there were statistically significant differences (p < 0.05) in DH and FH at the affected segments compared to preoperative values, whereas no significant differences (p > 0.05) were found in DH and FH at the adjacent upper segments compared to preoperative values. There was no statistically significant difference in the LLA compared to preoperative values (p > 0.05). Both the affected segments and adjacent upper segments showed statistically significant differences in Pfirrmann grading compared to preoperative values (p < 0.05). There were no statistically significant differences in the changes in disc angle or anterior-posterior translation distance in the affected or adjacent segments compared to preoperative values (p > 0.05). The VAS scores for back and leg pain, as well as the ODI, significantly improved at all postoperative time points compared to preoperative values. Among the comparisons at different time points, the differences were statistically significant (p < 0.05). The clinical efficacy was evaluated at the final follow-up using the modified MacNab criteria, with 51 cases rated as excellent, 8 cases as good, and 7 cases as fair, resulting in an excellent-good rate of 89.39%. CONCLUSIONS The OSE technique, as a surgical option for decompression in the treatment of LSS, has no significant impact on lumbar spine stability in the early postoperative period. However, it does have some effects on the lumbar intervertebral discs, which may lead to a certain degree of degeneration.
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Affiliation(s)
- Jinghe Zhang
- Department of Spine Surgery, Binzhou Medical University Hospital, No. 661, Huanghe Er Road, Binzhou, Shandong, 256603, China
| | - Ruqi Yan
- Department of Spine Surgery, Binzhou Medical University Hospital, No. 661, Huanghe Er Road, Binzhou, Shandong, 256603, China
| | - Shidong Xu
- Department of Spine Surgery, Central Hospital of Zibo, No.54, Communist Youth League West Road, Zibo, Shandong, 255020, China
| | - Bin Shao
- Department of Spine Surgery, Binzhou Medical University Hospital, No. 661, Huanghe Er Road, Binzhou, Shandong, 256603, China
| | - Yongfeng Dou
- Department of Spine Surgery, Binzhou Medical University Hospital, No. 661, Huanghe Er Road, Binzhou, Shandong, 256603, China.
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Dou Y, Li X, Tao J, Dong Y, Xu N, Wang S. Prediction of high-grade soft-tissue sarcoma using a combined intratumoural and peritumoural MRI-based radiomics nomogram. Clin Radiol 2023; 78:e1032-e1040. [PMID: 37748959 DOI: 10.1016/j.crad.2023.08.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 08/03/2023] [Accepted: 08/29/2023] [Indexed: 09/27/2023]
Abstract
AIM To develop an intratumoural and peritumoural magnetic resonance imaging (MRI)-based radiomics nomogram for predicting tumour grade to improve clinical treatment and long-term prognosis. MATERIALS AND METHODS MRI (3 T) features and T2-weighted imaging with fat-saturation (T2WI-FS)-based radiomics features of 57 patients with soft-tissue sarcoma (STS) were analysed retrospectively. Tumour size, ratio of width and length, relative depth to the peripheral fascia, peritumoural oedema, heterogeneity on T2WI, necrosis signal, enhancement model, and peritumoural enhancement were obtained. Independent risk factors were screened to construct an MRI feature nomogram. Radiomics features were obtained from intratumoural and peritumoural images on T2WI-FS. The optimal radiomics model was selected by the four-step dimensionality reduction method of minimum and maximum normalisation, optimal feature selection, selection based on support vector machine with L1-norm regularisation model, and iterative feature selection. MRI features and optimal radiomics features were used to construct a radiomics nomogram. The MRI feature nomogram model, the radiomics model, and the radiomics nomogram model were assessed by receiver operating characteristic (ROC) curves and calibration curves of the training and validation sets. RESULTS Heterogeneity on T2WI and peritumoural enhancement were independent risk factors for predicting high-grade STS. The areas under the curves of the training set and verification set of the three models were as follows: MRI feature nomogram, 0.86 and 0.83, respectively; intratumoural and peritumoural combined radiomics model, 0.99 and 0.86, respectively; and radiomics nomogram model, 0.98 and 0.96, respectively. CONCLUSION The radiomics nomogram model based on MRI features and combined intratumoural and peritumoural radiomic features was best able to predict high-grade STS.
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Affiliation(s)
- Y Dou
- Department of Ultrasound, The First Affiliated Hospital, Dalian Medical University, Dalian, China; Department of Radiology, The Second Hospital, Dalian Medical University, Dalian, China
| | - X Li
- Department of Radiology, Huashan Hospital Fudan University, Shanghai, China
| | - J Tao
- Department of Pathology, The Second Hospital, Dalian Medical University, Dalian, China
| | - Y Dong
- Department of Radiology, The Second Hospital, Dalian Medical University, Dalian, China
| | - N Xu
- Department of Radiology, The Second Hospital, Dalian Medical University, Dalian, China
| | - S Wang
- Department of Radiology, The Second Hospital, Dalian Medical University, Dalian, China.
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Dai G, Zhang M, Su W, Zhao J, Yu X, Sun Z, Dou Y, Geng X. Replantation of lamina spinous process ligament complex and miniature titanium plate shaping internal fixation in the treatment of tumors in the spinal canal. BMC Musculoskelet Disord 2023; 24:873. [PMID: 37950233 PMCID: PMC10636857 DOI: 10.1186/s12891-023-06984-9] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Accepted: 10/21/2023] [Indexed: 11/12/2023] Open
Abstract
OBJECTIVE Purpose This study aims to explore the clinical efficacy of laminospinous process ligament complex reimplantation combined with mini-titanium plate fixation in the treatment of thoracolumbar intraspinal tumors. METHODS A retrospective analysis was performed on 43 cases of intraspinal tumors treated with thoracolumbar intraspinal tumor resection from August 2018 to March 2021, and 27 cases underwent laminospinous process ligament complex reimplantation combined with micro titanium plate shaping. Fixation (laminar replantation group), and 16 patients underwent laminectomy combined with pedicle screw internal fixation (laminectomy group). The operation time, blood loss, drainage tube removal time, cerebrospinal fluid leakage, spinal instability, and the incidence of secondary spinal stenosis were compared between the two groups. The pain VAS score, ODI score, and modified Macnab at the last follow-up were compared between the two groups. And the laminar fusion rate of the laminoplasty group was measured. RESULTS Both groups successfully completed the surgery and obtained complete follow-up. The incidence of cerebrospinal fluid leakage and secondary spinal canal stenosis in the laminectomy group was lower than that in the laminectomy group, and the difference was statistically significant (P < 0.05). There was no statistically significant difference in the incidence of spinal instability between the two groups (P > 0.05). The operation time and intraoperative blood loss in the laminectomy group were less than those in the laminectomy group, and the drainage tube removal time was earlier than that in the laminectomy group. The difference was statistically significant (P < 0.05). At the final follow-up, there was no statistically significant difference in the pain VAS score, ODI score, and modified Macnab between the two groups (P > 0.05), but they were all significantly improved compared with preoperative ones. Fusion evaluation was conducted on the laminoplasty group. Two years after surgery, the fusion rate was 97.56% (40/41). CONCLUSIONS The application of laminospinous process ligament complex reimplantation combined with mini titanium plate fixation during thoracolumbar intraspinal tumor resection can effectively reconstruct the spinal canal and posterior column structure, reduce the incidence of cerebrospinal fluid leakage and secondary spinal stenosis. The laminar fusion rate is high.
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Affiliation(s)
- Guohua Dai
- Department of Spine Surgery, Binzhou Medical University Hospital, 661 Second Huanghe road, Bincheng District, Binzhou, Shandong Province, 256600, China
| | - Min Zhang
- Department of Spine Surgery, Binzhou Medical University Hospital, 661 Second Huanghe road, Bincheng District, Binzhou, Shandong Province, 256600, China.
| | - Weiliang Su
- Department of Spine Surgery, Binzhou Medical University Hospital, 661 Second Huanghe road, Bincheng District, Binzhou, Shandong Province, 256600, China
| | - Jiaqing Zhao
- Department of Spine Surgery, Binzhou Medical University Hospital, 661 Second Huanghe road, Bincheng District, Binzhou, Shandong Province, 256600, China
| | - Xiankai Yu
- Department of Spine Surgery, Binzhou Medical University Hospital, 661 Second Huanghe road, Bincheng District, Binzhou, Shandong Province, 256600, China
| | - Zhaozhong Sun
- Department of Spine Surgery, Binzhou Medical University Hospital, 661 Second Huanghe road, Bincheng District, Binzhou, Shandong Province, 256600, China
| | - Yongfeng Dou
- Department of Spine Surgery, Binzhou Medical University Hospital, 661 Second Huanghe road, Bincheng District, Binzhou, Shandong Province, 256600, China
| | - Xiaopeng Geng
- Department of Spine Surgery, Binzhou Medical University Hospital, 661 Second Huanghe road, Bincheng District, Binzhou, Shandong Province, 256600, China.
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Chang CD, Dong C, Zhao SX, Yuan XW, Zhang XX, Zhao DD, Dou Y, Nan YM. [Real-world study on the efficacy and safety of first-line antiviral therapy for chronic hepatitis B]. Zhonghua Gan Zang Bing Za Zhi 2023; 31:855-861. [PMID: 37723068 DOI: 10.3760/cma.j.cn501113-20230322-00124] [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] [Subscribe] [Scholar Register] [Indexed: 09/20/2023]
Abstract
Objective: To clarify the clinical efficacy of first-line oral antiviral drugs tenofovir alafenamide (TAF), tenofovir disoproxil fumarate (TDF), and entecavir (ETV) in the treatment of chronic hepatitis B (CHB) and their safety profiles with lipid, bone, and kidney metabolism. Methods: 458 CHB cases diagnosed and treated at the Department of Hepatology of Integrated Traditional Chinese and Western Medicine of the Third Hospital of Hebei Medical University from February 2010 to November 2022 were selected. TAF (175 cases), TDF (124 cases), and ETV (159 cases) were used as therapies. At 24 and 48 weeks, the virology, biochemical response, changes in liver stiffness measurement (LSM), and bone, kidney, and blood lipid metabolism safety profiles were compared and analyzed. Results: After 24 and 48 weeks of TAF, TDF, and ETV therapy, HBV DNA load decreased by 3.28, 2.69, and 3.14 log10 IU/ml and 3.28, 2.83, and 3.65 log10 IU/ml, respectively, compared with the baseline, and the differences between the three groups were statistically significant, P < 0.001. The complete virological response rates were 73.95%, 66.09%, 67.19%, and 82.22%, 72.48%, and 70.49%, respectively. The incidence rates of low-level viremia were 16.67%, 21.70%, and 23.08%, while poor response rates were 1.11%, 3.67%, and 4.10%. ALT normalization rates were 64.00%, 63.89%, 67.96%, and 85.33%, 80.56%, 78.64%, respectively, and there was no statistically significant difference among the groups. LSM was significantly improved in patients treated with TAF for 48 weeks, P = 0.022. Serum phosphorus level gradually decreased with the prolongation of TDF treatment. The TAF treatment group had a good safety profile for kidney, bone, and phosphorus metabolism, with no dyslipidemia or related occurrences of risk. Conclusion: There are some differences in the therapeutic effects of first-line anti-HBV drugs. TAF has the lowest incidence of low-level viremia after 48 weeks of treatment and has a good safety profile in kidney, bone, and blood lipid metabolism.
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Affiliation(s)
- C D Chang
- Department of Traditional and Western Medical Hepatology, Third Hospital of Hebei Medical University, Provincial Key Laboratory of study on Mechanism of Hepatic Fibrosis in Chronic Liver Disease, Shijiazhuang 050051, China
| | - C Dong
- Department of Traditional and Western Medical Hepatology, Third Hospital of Hebei Medical University, Provincial Key Laboratory of study on Mechanism of Hepatic Fibrosis in Chronic Liver Disease, Shijiazhuang 050051, China
| | - S X Zhao
- Department of Traditional and Western Medical Hepatology, Third Hospital of Hebei Medical University, Provincial Key Laboratory of study on Mechanism of Hepatic Fibrosis in Chronic Liver Disease, Shijiazhuang 050051, China
| | - X W Yuan
- Department of Traditional and Western Medical Hepatology, Third Hospital of Hebei Medical University, Provincial Key Laboratory of study on Mechanism of Hepatic Fibrosis in Chronic Liver Disease, Shijiazhuang 050051, China
| | - X X Zhang
- Department of Traditional and Western Medical Hepatology, Third Hospital of Hebei Medical University, Provincial Key Laboratory of study on Mechanism of Hepatic Fibrosis in Chronic Liver Disease, Shijiazhuang 050051, China
| | - D D Zhao
- Department of Traditional and Western Medical Hepatology, Third Hospital of Hebei Medical University, Provincial Key Laboratory of study on Mechanism of Hepatic Fibrosis in Chronic Liver Disease, Shijiazhuang 050051, China
| | - Y Dou
- Department of Traditional and Western Medical Hepatology, Third Hospital of Hebei Medical University, Provincial Key Laboratory of study on Mechanism of Hepatic Fibrosis in Chronic Liver Disease, Shijiazhuang 050051, China
| | - Y M Nan
- Department of Traditional and Western Medical Hepatology, Third Hospital of Hebei Medical University, Provincial Key Laboratory of study on Mechanism of Hepatic Fibrosis in Chronic Liver Disease, Shijiazhuang 050051, China
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Dong C, Chang CD, Zhao DD, Zhang XX, Guo PL, Dou Y, Zhao SX, Nan YM. [Clinical value of plasma scaffold protein SEC16A in evaluating hepatitis B-related liver cirrhosis and hepatocellular carcinoma]. Zhonghua Gan Zang Bing Za Zhi 2023; 31:621-626. [PMID: 37400387 DOI: 10.3760/cma.j.cn501113-20230220-00067] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 07/05/2023]
Abstract
Objective: To investigate the clinical value of plasma scaffold protein SEC16A level and related models in the diagnosis of hepatitis B virus-related liver cirrhosis (HBV-LC) and hepatocellular carcinoma (HBV-HCC). Methods: Patients with HBV-LC and HBV-HCC and a healthy control group diagnosed by clinical, laboratory examination, imaging, and liver histopathology at the Third Hospital of Hebei Medical University between June 2017 and October 2021 were selected. Plasma SEC16A level was detected using an enzyme-linked immunosorbent assay (ELISA). Serum alpha-fetoprotein (AFP) was detected using an electrochemiluminescence instrument. SPSS 26.0 and MedCalc 15.0 statistical software were used to analyze the relationship between plasma SEC16A levels and the occurrence and development of liver cirrhosis and liver cancer. A sequential logistic regression model was used to analyze relevant factors. SEC16A was established through a joint diagnostic model. Receiver operating characteristic curve was used to evaluate the clinical efficacy of the model for liver cirrhosis and hepatocellular carcinoma diagnosis. Pearson correlation analysis was used to identify the influencing factors of novel diagnostic biomarkers. Results: A total of 60 cases of healthy controls, 60 cases of HBV-LC, and 52 cases of HBV-HCC were included. The average levels of plasma SEC16A were (7.41 ± 1.66) ng/ml, (10.26 ± 1.86) ng/ml, (12.79 ± 1.49) ng /ml, respectively, with P < 0.001. The sensitivity and specificity of SEC16A in the diagnosis of liver cirrhosis and hepatocellular carcinoma were 69.44% and 71.05%, and 89.36% and 88.89%, respectively. SEC16A, age, and AFP were independent risk factors for the occurrence of HBV-LC and HCC. SAA diagnostic cut-off values, sensitivity, and specificity were 26.21 and 31.46, 77.78% and 81.58%, and 87.23% and 97.22%, respectively. The sensitivity and specificity for HBV-HCC early diagnosis were 80.95% and 97.22%, respectively. Pearson correlation analysis showed that AFP level was positively correlated with alanine aminotransferase (ALT), aspartate aminotransferase (AST), total bilirubin (TBil), and γ-glutamyltransferase (GGT) with P < 0.01, while the serum SEC16A level was only slightly positively correlated with ALT and AST in the liver cirrhosis group (r = 0.268 and 0.260, respectively, P < 0.05). Conclusion: Plasma SEC16A can be used as a diagnostic marker for hepatitis B-related liver cirrhosis and hepatocellular carcinoma. SEC16A, combined with age and the AFP diagnostic model with SAA, can significantly improve the rate of HBV-LC and HBV-HCC early diagnosis. Additionally, its application is helpful for the diagnosis and differential diagnosis of the progression of HBV-related diseases.
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Affiliation(s)
- C Dong
- Department of Traditional and Western Medical Hepatology, Third Hospital of Hebei Medical University, Shijiazhuang 050051, China
| | - C D Chang
- Department of Traditional and Western Medical Hepatology, Third Hospital of Hebei Medical University, Shijiazhuang 050051, China
| | - D D Zhao
- Department of Traditional and Western Medical Hepatology, Third Hospital of Hebei Medical University, Shijiazhuang 050051, China
| | - X X Zhang
- Department of Traditional and Western Medical Hepatology, Third Hospital of Hebei Medical University, Shijiazhuang 050051, China
| | - P L Guo
- Department of Traditional and Western Medical Hepatology, Third Hospital of Hebei Medical University, Shijiazhuang 050051, China
| | - Y Dou
- Department of Traditional and Western Medical Hepatology, Third Hospital of Hebei Medical University, Shijiazhuang 050051, China
| | - S X Zhao
- Department of Traditional and Western Medical Hepatology, Third Hospital of Hebei Medical University, Shijiazhuang 050051, China
| | - Y M Nan
- Department of Traditional and Western Medical Hepatology, Third Hospital of Hebei Medical University, Shijiazhuang 050051, China
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Sun X, Yin ZQ, Zheng JX, Dou Y, Zhang Q, Fu Q, Zhang WL, Yi L. [A comparative study of the curative effects between butterfly-shaped flap and propeller flap based on the dorsal branch of digital artery in repairing the wound in volar aspect of finger]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2023; 39:552-557. [PMID: 37805771 DOI: 10.3760/cma.j.cn501225-20220714-00294] [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: 10/09/2023]
Abstract
Objective: To compare the curative effects of butterfly-shaped flap based on the dorsal branch of digital artery (hereinafter referred to as butterfly-shaped flap) and propeller flap based on the dorsal branch of digital artery (hereinafter referred to as propeller flap) in repairing the wound in volar aspect of finger. Methods: A retrospective cohort study was conducted. From August 2018 to April 2022, 16 patients with finger palmar wounds admitted to Ruijin Hospital of Shanghai Jiao Tong University School of Medicine and 7 patients with finger palmar wounds admitted to General Hospital of PLA Central Theater Command met the inclusion criteria, including 14 males and 9 females, aged 25 to 64 years. After debridement or resection of skin benign tumor, the wounds ranged from 0.5 cm×0.5 cm to 1.5 cm×1.5 cm. According to the different rotation axes of flap pedicle during wound repair, the patients were divided into butterfly-shaped flap group (8 cases) and propeller flap group (15 cases), and their wounds were repaired by butterfly-shaped flap (with area of 0.5 cm×0.5 cm-1.5 cm×1.3 cm) or propeller flap (with area of 0.7 cm×0.5 cm-1.5 cm×1.5 cm) , respectively. In propeller flap group, wounds in the donor sites were repaired by full-thickness skin grafts taken from the palms of wrists or the groin. The surgical time, postoperative complications, flap survival, and wound healing time of patients in the two groups were recorded. Data were statistically analyzed with independent sample t test, Mann Whitney U test, or Fisher's exact probability test. Results: The surgical time and postoperative wound healing time of patients in butterfly-shaped flap group ((43±9) min and (13.1±0.8) d, respectively) were both significantly shorter than those in propeller flap group ((87±16) min and (16.7±4.6) d, respectively, with t values of -7.03 and -2.86, respectively, P<0.05). The postoperative flap survival and complications of patients between the two groups were both similar (P>0.05). Conclusions: For repairing the wound in volar aspect of finger, the butterfly-shaped flap has more advantages in comparison with the traditional propeller flap. The butterfly-shaped flap has a short surgical time and fast postoperative recovery, which is worthy of clinical promotion.
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Affiliation(s)
- X Sun
- Department of Burn and Plastic Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Z Q Yin
- Department of Burn and Plastic Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - J X Zheng
- Department of Burn and Plastic Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Y Dou
- Department of Burn and Plastic Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Q Zhang
- Department of Burn and Plastic Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Q Fu
- Department of Orthopedics, General Hospital of PLA Central Theater Command, Wuhan 430072, China
| | - W L Zhang
- Department of Hand Surgery, the People's Hospital of Tianjin, Tianjin 300121, China
| | - L Yi
- Department of Burn and Plastic Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
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Yi L, Dou Y, Zhou ZD, Li XC, Zheng JX, Zhang Q, Huan JN, Liu Y. [Observation on the clinical effect of self-designed modified rhomboid skin flap in facial wound repair]. Zhonghua Shao Shang Za Zhi 2021; 37:788-792. [PMID: 34420279 DOI: 10.3760/cma.j.cn501120-20200504-00250] [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 investigate the clinical effect of self-designed modified rhomboid flap in repairing rhomboid, round, and teardrop-shaped wounds on the face. Methods: A retrospective observational study was conducted. From August 2018 to April 2020, 30 patients with facial lesions admitted into Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine and the People's Hospital of Jianchuan County in Yunnan province met the inclusion criteria, including 16 males and 14 females, aged 23 to 88 years. The wound area ranged from 1.0 cm×1.0 cm to 7.0 cm×5.0 cm, with 10 cases of rhomboid wounds, 12 cases of round wounds, and 8 cases of teardrop-shaped wounds. The self-designed modified rhomboid flaps were applied to repair the wounds and after that, the patients were followed up for 1 to 18 months to record the survival of flaps, wound tension, scar formation and complications after surgery. Results: No necrosis or blackening was observed at the tip of the flaps after surgery. All the flaps survived and the wounds healed well with little tension, minimal scars, and no complications. Conclusions: The self-designed modified rhomboid flap is especially suitable for facial wounds with multiple important organs, multiple anatomical subunits, and areas with large changes in soft tissue tension, which can reduce not only the rotation of the flap, but also unnecessary excision of normal skin and soft tissue.
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Affiliation(s)
- L Yi
- Department of Burn, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Y Dou
- Department of Burn, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Z D Zhou
- Department of Burn, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - X C Li
- Department of Burn, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - J X Zheng
- Department of Burn, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Q Zhang
- Department of Burn, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - J N Huan
- Department of Burn, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Y Liu
- Department of Burn, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
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Zhang Y, Ma ZZ, Wu BW, Dou Y, Zhang Q, Yang LY, Chen EZ. [Establishment of a risk prediction model for bloodstream infection and analysis of its predictive value in patients with extremely severe burns]. Zhonghua Shao Shang Za Zhi 2021; 37:530-537. [PMID: 34139830 DOI: 10.3760/cma.j.cn501120-20210114-00021] [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 establish a prediction model for bloodstream infection in patients with extremely severe burns based on the screened independent risk factors, and to analyze its predictive value. Methods: A retrospective case-control study was conducted. From January 1, 2010 to December 31, 2019, 307 patients with extremely severe burns were admitted to the Department of Burns and Plastic Surgery of Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medcine, including 251 males and 56 females, aged from 33 to 55 years. According to the occurrence of bloodstream infection, the patients were divided into non-bloodstream infection group (221 cases) and bloodstream infection group (86 cases). The gender, age, body mass index, outcome, length of hospital stay of patients were compared between the two groups, and the detection of bacteria in blood microbial culture of patients was analyzed in bloodstream infection group. The included 307 patients were divided into modeling group (219 cases) and validation group (88 cases) according to the random number table with the ratio of about 7∶3. The gender, age, body mass index, total burn area, full-thickness burn area, combination of inhalation injury, implementation of mechanical ventilation, days of mechanical ventilation, days of intensive care unit (ICU) stay, outcome, length of hospital stay, complication of bloodstream infection of patients were compared between the two groups. The patients in modeling group were divided into bloodstream infection subgroup and non-bloodstream infection subgroup. The total burn area, full-thickness burn area, combination of inhalation injury, implementation of mechanical ventilation, days of mechanical ventilation, and days of ICU stay of patients were compared between the two subgroups. The above-mentioned data between two groups were statistically analyzed with independent sample t test, chi-square test, and Mann-Whitney U test to screen out the factors with statistical significant differences in the subgroup univariate analysis of modeling group. The factors were used as variables, and binary multivariate logistic regression analysis was used to screen out the risk factors of bloodstream infection in patients with extremely severe burns, based on which the prediction model for bloodstream infection in patients with extremely severe burns of modeling group was established. The receiver operating characteristic (ROC) curve of the prediction model predicting the risk of bloodstream infection of patients in modeling group was drawn, and the area under the ROC curve was calculated. The sensitivity, specificity, and the best prediction probability were calculated according to the Youden index. The patients in validation group were divided into bloodstream infection subgroup (21 cases) and non-bloodstream infection subgroup (67 cases). The prediction probability>the best prediction probability of model was used as the judgment standard of bloodstream infection. The prediction model was used to predict the occurrence of bloodstream infection of patients in the two subgroups of validation group, and the incidence, specificity, and sensitivity of bloodstream infection were calculated, In addition, the ROC curve of the prediction model predicting the risk of bloodstream infection of patients in validation group was drawn, and the area under the ROC curve was calculated. Results: Compared with those of non-bloodstream infection group, the mortality of patients in bloodstream infection group was significantly higher (χ2=8.485, P<0.01), the length of hospital stay was significantly increased (Z=-3.003, P<0.01), but there was no significant change in gender, age, or body mass index (P>0.05). In bloodstream infection group, 110 strains of bacteria were detected in blood microbial culture, among which Klebsiella pneumoniae, Pseudomonas aeruginosa, and Acinetobacter baumannii were the top three bacteria, accounting for 35.45% (39/110), 26.36% (29/110), and 13.64% (15/110) respectively. Gender, age, body mass index, total burn area, full-thickness burn area, proportion of combination of inhalation injury, proportion of implementation of mechanical ventilation, days of mechanical ventilation, days of ICU stay, outcome, length of hospital stay, and proportion of complication of bloodstream infection of patients were similar between modeling group and validation group (P>0.05). Compared with those of non-bloodstream infection subgroup in modeling group, the total burn area, full-thickness burn area, proportion of combination of inhalation injury, proportion of implementation of mechanical ventilation, days of mechanical ventilation, and days of ICU stay of patients in bloodstream infection subgroup were significantly increased (Z=-4.429, t=-4.045, χ2=7.845, 8.845, Z=-3.904, -4.134, P<0.01). Binary multivariate logistic regression analysis showed that total burn area, days of ICU stay, and combination of inhalation injury were the independent risk factors for bloodstream infection of patients in modeling group (odds ratio=1.031, 1.018, 2.871, 95% confidence interval=1.004-1.059, 1.006-1.030, 1.345-6.128, P<0.05 or P<0.01). In modeling group, the area under the ROC curve was 0.773 (95% confidence interval=0.708-0.838); the sensitivity was 64.6%, the specificity was 77.9%, and the best prediction probability was 0.335 when the Youden index was 0.425. The bloodstream infection incidence of patients predicted by the prediction model in validation group was 27.27% (24/88), with specificity of 82.09% (55/67) and sensitivity of 57.14% (12/21). The area under the ROC curve in validation group was 0.759 (95% confidence interval=0.637-0.882). Conclusions: The total burn area, days of ICU stay, and combination of inhalation injury are the risk factors of bloodstream infection in patients with extremely severe burns. The prediction model for bloodstream infection risk in patients with extremely severe burns based on these factors has certain predictive value for burn centers with relatively stable treatment methods and bacterial epidemiology.
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Affiliation(s)
- Y Zhang
- Department of Burns and Plastic Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medcine, Shanghai 200025, China
| | - Z Z Ma
- School of Nursing, Shanghai Jiao Tong University, Shanghai 200020, China
| | - B W Wu
- Nursing Department, Ruijin Hospital, Shanghai Jiao Tong University School of Medcine, Shanghai 200025, China
| | - Y Dou
- Department of Burns and Plastic Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medcine, Shanghai 200025, China
| | - Q Zhang
- Department of Burns and Plastic Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medcine, Shanghai 200025, China
| | - L Y Yang
- Department of Critical Care, Tongren Hospital of Wuhan University & Wuhan Third Hospital, Wuhan 430060, China
| | - E Z Chen
- Emergency Department, Ruijin Hospital, Shanghai Jiao Tong University School of Medcine, Shanghai 200025, China
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Qiu P, Dou Y, Ma LZ, Tang XX, Liu XL, Chen JW. Long non-coding RNA TTN-AS1 promotes the metastasis in breast cancer by epigenetically activating DGCR8. Eur Rev Med Pharmacol Sci 2020; 23:10835-10841. [PMID: 31858552 DOI: 10.26355/eurrev_201912_19787] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Breast cancer (BC) is one of the most common fatal cancers. Recent studies have identified the vital roles of long non-coding RNAs (lncRNAs) in the development and progression of BC. This research aimed to investigate the underlying mechanisms of lncRNA TTN-AS1 in the metastasis of BC. PATIENTS AND METHODS TTN-AS1 expression of tissues was detected by Real Time-quantitative Polymerase Chain Reaction (RT-qPCR) in 50 BC patients. Wound healing assay and transwell assay were used to observe the phenotypic alteration of BC cells after knockdown or overexpression of TTN-AS1. Moreover, RT-qPCR and Western blot assay were performed to discover the potential targets of TTN-AS1 in BC. RESULTS TTN-AS1 expression in BC samples was significantly higher than that of the adjacent tissues. Besides, the migration and invasion of BC cells were markedly inhibited after TTN-AS1 was silenced, while promoted after TTN-AS1 overexpression. In addition, a remarkable decrease of DGCR8 was observed after TTN-AS1 was inhibited in BC cells, while DGCR8 was upregulated after overexpression of TTN-AS1. Furthermore, DGCR8 expression showed significant enhancement in BC tissues and was positively associated with TTN-AS1 level. CONCLUSIONS Our study uncovered a new oncogene in BC and suggested that TTN-AS1 could enhance BC cell migration and invasion via sponging DGCR8, which provided a novel therapeutic target for the treatment of breast cancer.
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Affiliation(s)
- P Qiu
- Department of Medical Oncology, Xingtai People's Hospital, Xingtai, China.
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Ma G, Han D, Dang S, Yu N, Yang Q, Yang C, Jin C, Dou Y. Replacing true unenhanced imaging in renal carcinoma with virtual unenhanced images in dual-energy spectral CT: a feasibility study. Clin Radiol 2020; 76:81.e21-81.e27. [PMID: 32993881 DOI: 10.1016/j.crad.2020.08.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 08/21/2020] [Indexed: 11/18/2022]
Abstract
AIM To investigate the clinical value of virtual unenhanced (VNC) spectral computed tomography (CT) images to replace the conventional true unenhanced spectral CT images (TNC) in diagnosing renal carcinoma. MATERIALS AND METHODS Fifty-six cases of renal carcinoma confirmed by histopathology underwent conventional plain CT and contrast-enhanced spectral CT at arterial phase (AP) and venous phase (VP). VNC images were generated on an AW4.6 workstation. The CT attenuation, image noise, contrast-to-noise ratio (CNR), and signal-noise-ratio (SNR) of the renal lesions and normal kidneys, long and short axis diameters of the lesion were measured from the three image sets and analysed using one-way analysis of variance (ANOVA). Two radiologists evaluated image quality subjectively using a five-point score, and lesion signature using a three-point score. Image quality scores were compared statistically and tested for consistency. RESULTS The two reviewers had good agreement for subjective evaluation (Kappa>0.70) and there was no difference in the quality of the scores among the three image groups. The lesion signature scores were all above the acceptable level. The CNR and SNR values in VNC were significantly higher than in TNC (p<0.05). VNC images had lower renal noise than in TNC (p<0.05). There was no difference in the long and short axis diameters of the lesion among the three image groups. VNC had higher CT attenuation values for the lesion and kidney than TNC (p<0.05), but the differences were <5 HU. CONCLUSION VNC images in spectral CT may be used to replace the conventional plain CT to reduce imaging duration and radiation dose in diagnosing renal carcinoma.
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Affiliation(s)
- G Ma
- Department of Radiology, Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, 712000, China
| | - D Han
- Department of Radiology, Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, 712000, China
| | - S Dang
- Department of Radiology, Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, 712000, China
| | - N Yu
- Department of Radiology, Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, 712000, China
| | - Q Yang
- Department of Radiology, Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, 712000, China
| | - C Yang
- Department of Radiology, Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, 712000, China
| | - C Jin
- Department of Radiology, The First Affiliated Hospital of Xi'an Jiaotong University, Yanta Western Road, Xi'an, Shannxi, 710061, China
| | - Y Dou
- Department of Radiology, Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, 712000, China.
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Qiu P, Dou Y, Ma LZ, Tang XX, Liu XL, Chen JW. Long non-coding RNA TTN-AS1 promotes the metastasis in breast cancer by epigenetically activating DGCR8. Eur Rev Med Pharmacol Sci 2020; 24:7559. [PMID: 32744664 DOI: 10.26355/eurrev_202007_22212] [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: 11/12/2022]
Abstract
Since this article has been suspected of research misconduct and the corresponding authors did not respond to our request to prove originality of data and figures, "Long non-coding RNA TTN-AS1 promotes the metastasis in breast cancer by epigenetically activating DGCR8, by P. Qiu, Y. Dou, L.-Z. Ma, X.-X. Tang, X.-L. Liu, J.-W. Chen, published in Eur Rev Med Pharmacol Sci 2019; 23 (24): 10835-10841-DOI: 10.26355/eurrev_201912_19787-PMID: 31858552" has been withdrawn. The Publisher apologizes for any inconvenience this may cause. https://www.europeanreview.org/article/19787.
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Affiliation(s)
- P Qiu
- Department of Medical Oncology, Xingtai People's Hospital, Xingtai, China
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12
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Dou Y, Zhang Q. [A single center study on antimicrobial use and bacterial resistance in burn ward]. Zhonghua Yi Xue Za Zhi 2020; 100:1401-1408. [PMID: 32392991 DOI: 10.3760/cma.j.cn112137-20191207-02673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effect of antibiotics on bacterial resistance through analyzing the use of common antibiotics and the bacterial prevalence in single-center burn ward. Methods: The epidemiological data of pathogenic bacteria and the use of common antibiotics in burn ward of Ruijin Hospital Affiliated to Shanghai Jiaotong University Medical College was investigated in the past 9 years. Bacteria samples were collected from the wounds, catheters, blood, feces, urine and sputum of inpatients in the unit from January 2010 to December 2018. The antibiotics use density was calculated by defined daily doses (DDDs)/(1 000 patient-days). Results: (1) In the proportion of bacteria detected, Staphylococcus aureus was the first and sensitive to glycopeptide antibiotics. Klebsiella pneumonia (19.8%), Pseudomonas aeruginosa (11.9%) and Acinetobacter baumannii (11.5%) were the top three Gram-negative bacteria in 2018; the proportion of Klebsiella pneumoniae was significantly increased (R(2)=0.861, P<0.001). (2) The Pseudomonas aeruginosa resistance rate to ceftazidime (R(2)=0.447, P=0.049) and ciprofloxacin (R(2)=0.663, P=0.008) increased significantly. The Klebsiella pneumoniae resistance rate to piperacillin (R(2)=0.999, P=0.018), meropenem (R(2)=0.999, P=0.023), ciprofloxacin (R(2)=1.000, P=0.010) increased significantly. There was no significant trend in the Acinetobacter baumannii resistance rate. (3) The use density of meropenem increased significantly (R(2)=0.492, P=0.035), and that of ciprofloxacin decreased significantly (R(2)=0.572, P=0.018). (4) Carbapenems use density was positively correlated with resistance rate of Klebsiella pneumoniae to cefoperazone sulbactam (r=0.733, P=0.025), piperacillin tazobactam (r=0.684, P=0.042), cefuroxime (r=0.821, P=0.023), ceftazidime (r=0.741, P=0.022), imipenem (r=0.718, P=0.029), meropenem (r=0.690, P=0.040), amikacin (r=0.750, P=0.020). (5) Ciprofloxacin use density was negatively correlated with the Pseudomonas aeruginosa resistance rate to ceftazidime (r=-0.751, P=0.020), Ciprofloxacin (r=-0.873, P=0.002) and with the Klebsiella pneumoniae resistance rate to cefuroxime (r=-0.767, P=0.044), ceftazidime (r=-0.712, P=0.031), imipenem (r=-0.780, P=0.013), meropenem (r=-0.793, P=0.011), ciprofloxacin (r=-0.871, P=0.002), Sulfamethoxazole/trimethoprim (r=-0.793, P=0.011). Conclusion: Carbapenems can induce Klebsiella pneumoniae to be multiple drug resistance; through the relationship between ciprofloxacin use intensity and drug resistance, the strategy of only restricting a certain antimicrobial agent may not restore the bacterial sensitivity.
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Affiliation(s)
- Y Dou
- Burn and Plastic Surgery Department, Ruijin Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai 200025, China
| | - Q Zhang
- Burn and Plastic Surgery Department, Ruijin Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai 200025, China
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Zhang Y, Wang T, Lei J, Guo S, Wang S, Gu Y, Wang S, Dou Y, Zhuang X. Cerebral Damage after Carbon Monoxide Poisoning: A Longitudinal Diffusional Kurtosis Imaging Study. AJNR Am J Neuroradiol 2019; 40:1630-1637. [PMID: 31558500 DOI: 10.3174/ajnr.a6201] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 07/25/2019] [Indexed: 12/23/2022]
Abstract
BACKGROUND AND PURPOSE Previous DTI cross-sectional studies have showed the cerebral damage feature was different in the three clinical stages after carbon monoxide poisoning. Diffusional kurtosis imaging (DKI) is an advanced diffusion imaging model and considered to better provide microstructural contrast in comparison with DTI parameters. The primary aim of this study was to assess microstructural changes in gray and white matter with diffusional kurtosis imaging in the acute, delayed neuropsychiatric, and chronic phases after acute carbon monoxide (CO) poisoning. The secondary aim was to relate diffusional kurtosis imaging measures to neuropsychiatric outcomes of acute carbon monoxide poisoning. MATERIALS AND METHODS In all, 17 patients with acute carbon monoxide poisoning and 30 sex- and age-matched healthy volunteers were enrolled in the study. Patients were scanned within 1 week, 3-8 weeks, and 6 months after acute carbon monoxide poisoning. Diffusional kurtosis imaging metrics including mean kurtosis, mean diffusivity, fractional anisotropy, and kurtosis fractional anisotropy were measured in 11 ROIs and then further correlated with neuropsychiatric scores. RESULTS In WM, mean kurtosis tended to increase from the acute-to-delayed neuropsychiatric phases and then decrease in the chronic phase, while in GM mean kurtosis showed a constant decline. Contrary to mean kurtosis, mean diffusivity first decreased then tended to increase in WM, while in GM, from the acute to chronic phases, mean diffusivity showed a constant increase. In both WM and GM, the fractional anisotropy and kurtosis fractional anisotropy values progressively declined with time. Kurtosis fractional anisotropy showed the best diagnostic efficiency with an area under the curve of 0.812 (P = .000). Along with neuropsychiatric scores, kurtosis fractional anisotropy of the centrum semiovale and Digit Span Backward were most relevant (r = 0.476, P = .000). CONCLUSIONS Longitudinally, microstructural changes were inconsistent in WM and GM with time after acute carbon monoxide poisoning. Diffusional kurtosis imaging metrics provided important complementary information to quantify the damage to cognitive impairment.
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Affiliation(s)
- Y Zhang
- From the Department of Radiology (Y.Z., J.L., S.G., Shuaiwen Wang, Y.D., X.Z.), The First Hospital of Lan Zhou University, Intelligent Imaging Medical Engineering Research Center of Gansu Province, Accurate Image Collaborative Innovation International Science and Technology Cooperation Base of Gansu Province, Lanzhou, China
| | - T Wang
- Department of Neurology (T.W., Y.G.), The First Hospital of Lan Zhou University, Lan Zhou, China
| | - J Lei
- From the Department of Radiology (Y.Z., J.L., S.G., Shuaiwen Wang, Y.D., X.Z.), The First Hospital of Lan Zhou University, Intelligent Imaging Medical Engineering Research Center of Gansu Province, Accurate Image Collaborative Innovation International Science and Technology Cooperation Base of Gansu Province, Lanzhou, China
| | - S Guo
- From the Department of Radiology (Y.Z., J.L., S.G., Shuaiwen Wang, Y.D., X.Z.), The First Hospital of Lan Zhou University, Intelligent Imaging Medical Engineering Research Center of Gansu Province, Accurate Image Collaborative Innovation International Science and Technology Cooperation Base of Gansu Province, Lanzhou, China
| | - S Wang
- MR Scientific Marketing (Shaoyu Wang), Siemens Healthineers, Xi'an, China
| | - Y Gu
- Department of Neurology (T.W., Y.G.), The First Hospital of Lan Zhou University, Lan Zhou, China
| | - S Wang
- MR Scientific Marketing (Shaoyu Wang), Siemens Healthineers, Xi'an, China
| | - Y Dou
- From the Department of Radiology (Y.Z., J.L., S.G., Shuaiwen Wang, Y.D., X.Z.), The First Hospital of Lan Zhou University, Intelligent Imaging Medical Engineering Research Center of Gansu Province, Accurate Image Collaborative Innovation International Science and Technology Cooperation Base of Gansu Province, Lanzhou, China
| | - X Zhuang
- From the Department of Radiology (Y.Z., J.L., S.G., Shuaiwen Wang, Y.D., X.Z.), The First Hospital of Lan Zhou University, Intelligent Imaging Medical Engineering Research Center of Gansu Province, Accurate Image Collaborative Innovation International Science and Technology Cooperation Base of Gansu Province, Lanzhou, China
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Lan W, Dou Y, Wang X, Si W, Zhou Z, Zhuang S, Liu H, Liu Q, Zhang D. Polyazamacrocyclic Copper-Based Cyanide-Bridged Bimetallic Sandwich-Like Complexes: Synthesis, Crystal Structure, and Magnetic Properties. J STRUCT CHEM+ 2019. [DOI: 10.1134/s0022476619090129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Liu B, Gao X, Sun Z, Fang Q, Geng X, Zhang H, Wang G, Dou Y, Hu P, Zhu K, Wang D, Xing J, Liu D, Zhang M, Li R. Biomimetic porous silk fibroin/biphasic calcium phosphate scaffold for bone tissue regeneration. J Mater Sci Mater Med 2018; 30:4. [PMID: 30569403 DOI: 10.1007/s10856-018-6208-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 12/10/2018] [Indexed: 06/09/2023]
Abstract
The purpose of our study is to prepare a biomimetic porous silk fibroin (SF)/biphasic calcium phosphate (BCP) scaffold, and evaluate its performance in bone tissue regeneration. The differences in pore size, porosity, mechanical strength and biocompatibility of four different fibroin-containing scaffolds (0, 20, 40, and 60% SF) were studied in vitro. After inoculation with MC3T3-E1 cells, the ectopic bone formation ability of the SF/BCP bionic scaffold was evaluated in a rat model. The SEM and CT demonstrated that compared with pure BCP group (0% SF), the pore size and porosity of SF/BCP scaffolds were proportional to SF content, of which 40% of SF and 60% of SF groups were more suitable for cell growth. The compressive strength of SF/BCP scaffold was greater than that of the pure BCP scaffold, and showed a trend of first increasing and then decreasing with the increase of SF content, among which 40% of SF group had the maximum compressive strength (40.80 + 0.68) MPa. The SF/BCP scaffold had good biocompatibility, under the electron microscope, the cells can be smoothly attached to and propagated on the scaffold. After loading the osteoblasts, it showed excellent osteogenic capacity in the rat model. The SF/BCP scaffold can highly simulate the micro-environment of natural bone formation and can meet the requirements of tissue engineering. The SF/BCP biomimetic porous scaffold has excellent physical properties and biocompatibility. It can highly simulate the natural bone matrix composition and microenvironment, and can promote the adhesion and proliferation of osteoblasts. The SF/BCP scaffold has good ectopic osteogenesis after loading with osteoblasts, which can meet the requirements of scaffold materials in tissue engineering, and has broad application prospects in clinical application.
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Affiliation(s)
- Bin Liu
- Department of Spine Surgery, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2nd Road, Shandong Province, Binzhou City, P. R. China
| | - Xiyuan Gao
- Department of Spine Surgery, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2nd Road, Shandong Province, Binzhou City, P. R. China
| | - Zhaozhong Sun
- Department of Spine Surgery, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2nd Road, Shandong Province, Binzhou City, P. R. China.
| | - Qingmin Fang
- Department of Spine Surgery, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2nd Road, Shandong Province, Binzhou City, P. R. China
| | - Xiaopeng Geng
- Department of Spine Surgery, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2nd Road, Shandong Province, Binzhou City, P. R. China
| | - Hanli Zhang
- Department of Spine Surgery, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2nd Road, Shandong Province, Binzhou City, P. R. China
| | - Guanglin Wang
- Department of Spine Surgery, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2nd Road, Shandong Province, Binzhou City, P. R. China
| | - Yongfeng Dou
- Department of Spine Surgery, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2nd Road, Shandong Province, Binzhou City, P. R. China
| | - Peng Hu
- Department of Spine Surgery, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2nd Road, Shandong Province, Binzhou City, P. R. China
| | - Kai Zhu
- Department of Spine Surgery, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2nd Road, Shandong Province, Binzhou City, P. R. China
| | - Dawei Wang
- Department of Spine Surgery, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2nd Road, Shandong Province, Binzhou City, P. R. China
| | - Jianqiang Xing
- Department of Spine Surgery, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2nd Road, Shandong Province, Binzhou City, P. R. China
| | - Dong Liu
- Department of Spine Surgery, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2nd Road, Shandong Province, Binzhou City, P. R. China
| | - Min Zhang
- Department of Spine Surgery, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2nd Road, Shandong Province, Binzhou City, P. R. China
| | - Rui Li
- Department of Spine Surgery, Affiliated Hospital of Binzhou Medical University, No. 661, Huanghe 2nd Road, Shandong Province, Binzhou City, P. R. China
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Dou Y, Li L, Du J, He Y, Chen R, Li Y, Ma C, Liu H. Development of a multiplex two-gene real-time PCR assay for accurate detection of Klebsiella pneumoniae. Br J Biomed Sci 2018; 76:42-45. [PMID: 29991336 DOI: 10.1080/09674845.2018.1499167] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Y Dou
- a Department of Clinical Laboratory , Shenzhen Shajing Hospital affiliated to Guangzhou Medical University , Shenzhen , China
| | - L Li
- b Dongguan Research Center, Traditional Chinese Medicine and New Drug Research Institute, Guangdong Medical University , Dongguan , China
| | - J Du
- a Department of Clinical Laboratory , Shenzhen Shajing Hospital affiliated to Guangzhou Medical University , Shenzhen , China
| | - Y He
- a Department of Clinical Laboratory , Shenzhen Shajing Hospital affiliated to Guangzhou Medical University , Shenzhen , China
| | - R Chen
- c Department of Clinical Laboratory , The Second People's Hospital of Futian District , Shenzhen , China
| | - Y Li
- a Department of Clinical Laboratory , Shenzhen Shajing Hospital affiliated to Guangzhou Medical University , Shenzhen , China
| | - C Ma
- a Department of Clinical Laboratory , Shenzhen Shajing Hospital affiliated to Guangzhou Medical University , Shenzhen , China
| | - H Liu
- a Department of Clinical Laboratory , Shenzhen Shajing Hospital affiliated to Guangzhou Medical University , Shenzhen , China
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Luan YJ, Xu Y, Cai J, Dou Y, Yu WJ, Wang KT, Liu SH, Yang PS, Qu X, Wei FC. Expression of Kif5b protein is significantly associated with the progression, recurrence and prognosis of oral squamous cell carcinoma. Eur Rev Med Pharmacol Sci 2018; 22:4542-4550. [PMID: 30058692 DOI: 10.26355/eurrev_201807_15509] [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: 11/12/2022]
Abstract
OBJECTIVE Kinesin family member 5b (Kif5b), a conventional kinesin, mainly participates in lysosome and mitochondria transportation. Some studies have indicated that Kif5b may be associated with the development of a variety of tumors. However, the role Kif5b plays in oral squamous cell carcinoma (OSCC) has yet to be determined. Our study aimed at investigating the expression level of Kif5b in primary OSCC and discussing its clinical significance in patients' outcomes. PATIENTS AND METHODS We measured Kif5b expression in 82 OSCC tissue samples with immunohistochemistry. The associations between the expression level of Kif5b and clinicopathological characteristics as well as patients' survival were statistically assessed. RESULTS Kif5b level was significantly associated with tumor size (p=0.034), histological differentiation (p=0.028), disease recurrence (p=0.018), surrounding tissue invasion (p=0.045), recurrence time (p=0.036) and survival status (p=0.030). Kaplan-Meier cumulative survival analyses indicated that high expression of Kif5b was linked to worse overall survival (p=0.0112) and disease-free survival (p=0.0085). The univariate and multivariate Cox proportional hazard analysis further identified the expression status of Kif5b as an independent variable that correlated with patients' survival and recurrence. Furthermore, in 54 early-stage, clinically node negative OSCC patients, Kif5b expression were correlated with histological differentiation (p=0.034), disease recurrence (p=0.038) and surrounding tissue invasion (p=0.029). Univariate and multivariable logistic regression results showed that only Kif5b expression level could influence the probability of recurrence. CONCLUSIONS Our results reveal that Kif5b expression is associated with poor clinical outcome in OSCC and even in early-stage, clinically node negative OSCC and may be a potential target for OSCC treatment.
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Affiliation(s)
- Y-J Luan
- Department of Stomatology, Qilu Hospital and Institute of Stomatology, Shandong University, Jinan, China.
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Abstract
Objective: To investigate distribution and drug resistance of pathogens of burn patients. Methods: A total of 3 357 strains were cultured and isolated from 25 286 specimens of wounds excretion, deep venous catheters, venous blood, stool, mid-stream urine, sputum, puncture fluid, and throat swab of 11 510 burn patients hospitalized in our burn wards from January 2007 to December 2015. After being identified by API bacteria identification panels and automatically bacteria identification equipment, drug-resistances of Staphylococcus aureus, Pseudomonas aeruginosa, Acinetobacter baumannii, and Klebsiella pneumoniae to 28 common antibiotics were tested by drug sensitivity test with K-B paper disk diffusion method. The WHONET 5.6 software was used to analyze constituent ratio of gram-negative bacteria and gram-positive bacteria in each year, distribution of pathogens in each year, and drug resistance of the above-mentioned 4 pathogens in 9 years to 28 common antibiotics. Data were analyzed by the linear model curve fitting. Results: (1) From 2007 to 2015, constituent ratios of gram-negative bacteria were respectively 41.22% (101/245), 41.88% (165/394), 45.92% (169/368), 42.54% (208/489), 52.35% (267/510), 56.89% (194/341), 58.99% (210/356), 56.95% (172/302), and 50.28% (177/352), with significantly increasing trend (R(2)=0.625, P<0.05); constituent ratios of gram-positive bacteria were respectively 58.78% (144/245), 58.12% (229/394), 54.08% (199/368), 57.46% (281/489), 47.65% (243/510), 43.11% (147/341), 41.01% (146/356), 43.05% (130/302), 49.72% (175/352), with significantly decreasing trend (R(2)=0.625, P<0.05). In 9 years, constituent ratio of Staphylococcus aureus ranked the first in all bacteria, and constituent ratios of Pseudomonas aeruginosa and Klebsiella pneumoniae were with significantly increasing trend (R(2)=0.811, 0.778, P<0.01). (2) In 9 years, drug-resistant rates of Staphylococcus aureus to gentamycin and rifampicin were with significantly decreasing trend (R(2)=0.727, 0.766, P<0.01); drug-resistant rates of Staphylococcus aureus to phosphonomycin were always in lower levels of 4.6% to 19.5%. In 9 years, drug-resistant rates of Pseudomonas aeruginosa to ceftazidime and ciprofloxacin had no significant change in trend (R(2)=0.023, <0.001, P>0.05), while drug-resistant rates of Pseudomonas aeruginosa to other 10 common antibiotics were with significantly increasing trend (R(2)=0.764, 0.793, 0.785, 0.768, 0.752, 0.749, 0.789, 0.786, 0.706, 0.629, P<0.01). In 9 years, drug-resistant rate of Acinetobacter baumannii to ampicillin/sulbactam was with significantly decreasing trend (R(2)=0.652, P<0.01), and drug-resistant rate of Acinetobacter baumannii to amikacin was with significantly increasing trend ( R(2)=0.531, P<0.05). In 9 years, drug-resistant rates of Klebsiella pneumoniae to piperacillin, ampicillin/sulbactam, cefuroxime, ceftazidime, cefotaxime, cefepime, imipenem, meropenem, amikacin, and gentamicin were with obviously increasing trend (R(2)=0.481, 0.672, 0.694, 0.532, 0.810, 0.641, 0.809, 0.709, 0.579, 0.810, P<0.05 or P<0.01). Conclusions: Constituent ratios of gram-positive bacteria of Pseudomonas aeruginosa and Klebsiella pneumoniae of burn patients hospitalized in our burn wards from 2007 to 2015 were significantly increased, while constituent ratios of Staphylococcus aureus of those children always ranked the first. Drug-resistence of bacteria of those children in our burn wards was serious. Drug-resistant rate of Staphylococcus aureus only to phosphonomycin was always in lower level. Drug-resistant rates of Pseudomonas aeruginosa to 10 common antibiotics except ceftazidime and ciprofloxacin were significantly increased. Drug-resistant rate of Acinetobacter baumannii only to ampicillin/sulbactam was significantly decreased. Drug-resistant rates of Klebsiella pneumoniae to most common antibiotics were significantly increased.
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Affiliation(s)
- Y Dou
- Department of Burns and Plastic Surgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, China
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Dou Y, Rutanhira H, Chen X, Mishra A, Wang C, Fletcher HM. Role of extracytoplasmic function sigma factor PG1660 (RpoE) in the oxidative stress resistance regulatory network of Porphyromonas gingivalis. Mol Oral Microbiol 2017; 33:89-104. [PMID: 29059500 DOI: 10.1111/omi.12204] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/17/2017] [Indexed: 12/27/2022]
Abstract
In Porphyromonas gingivalis, the protein PG1660, composed of 174 amino acids, is annotated as an extracytoplasmic function (ECF) sigma factor (RpoE homologue-σ24). Because PG1660 can modulate several virulence factors and responds to environmental signals in P. gingivalis, its genetic properties were evaluated. PG1660 is co-transcribed with its downstream gene PG1659, and the transcription start site was identified as adenine residue 54-nucleotides upstream of the ATG translation start codon. In addition to binding its own promoter, using the purified rPG1660 and RNAP core enzyme from Escherichia coli with the PG1660 promoter DNA as template, the function of PG1660 as a sigma factor was demonstrated in an in vitro transcription assay. Transcriptome analyses of a P. gingivalis PG1660-defective isogenic mutant revealed that under oxidative stress conditions 176 genes including genes involved in secondary metabolism were downregulated more than two-fold compared with the parental strain. The rPG1660 protein also showed the ability to bind to the promoters of the highly downregulated genes in the PG1660-deficient mutant. As the ECF sigma factor PG0162 has a 29% identity with PG1660 and can modulate its expression, the cross-talk between their regulatory networks was explored. The expression profile of the PG0162PG1660-deficient mutant (P. gingivalis FLL356) revealed that the type IX secretion system genes and several virulence genes were downregulated under hydrogen peroxide stress conditions. Taken together, we have confirmed that PG1660 can function as a sigma factor, and plays an important regulatory role in the oxidative stress and virulence regulatory network of P. gingivalis.
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Affiliation(s)
- Y Dou
- Division of Microbiology and Molecular Genetics, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - H Rutanhira
- Division of Microbiology and Molecular Genetics, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - X Chen
- Department of Basic Sciences, School of Medicine, Center for Genomics, Loma Linda University, Loma Linda, CA, USA
| | - A Mishra
- Division of Microbiology and Molecular Genetics, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - C Wang
- Division of Microbiology and Molecular Genetics, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, USA.,Department of Basic Sciences, School of Medicine, Center for Genomics, Loma Linda University, Loma Linda, CA, USA
| | - H M Fletcher
- Division of Microbiology and Molecular Genetics, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, USA.,Institute of Oral Biology, Kyung Hee University, Seoul, Korea
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Xu S, Dou Y, Ye B, Wu Q, Wang Y, Hu M, Ma F, Rong X, Guo J. Ganoderma lucidum polysaccharides improve insulin sensitivity by regulating inflammatory cytokines and gut microbiota composition in mice. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.09.032] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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Abstract
AIM OF THE STUDY Idiopathic pulmonary fibrosis (IPF) is a lethal human disease with short survival time and few treatment options. In this study, we aim to demonstrate that cyclic nucleotide phosphodiesterase 1A (PDE1A), a Ca2+/calmodulin-stimulating PDE family member, plays a critical role in the induction of fibrosis and angiogenesis in the lung. MATERIALS AND METHODS To induce pulmonary damage, adult male SD rats were treated with bleomycin in a dose of 6 mg/kg body weight by a single intratracheal instillation. For in vivo silencing of PDE1A in rat lung, a nonspecific control siRNA or PDE1A-specific siRNA was used to treat rat through nasal instillation. Human normal pulmonary fibroblasts MRC-5 and hFL1 and rat lung fibroblasts were used as in vitro model. Immunohistochemistry and immunoflurescence staining were performed to detect PDE1A and α-SMA expression. Reverse transcription-qPCR was performed to detect microRNA and mRNA expression. In vitro wound healing assay was performed to detect pulmonary fibroblasts'mortality ability. RESULTS In vitro studies showed that PDE1A can stimulate lung fibroblasts to undergo myofibroblastic changes. This led to the identification of miR-541-5p as one of the miRNA candidates associated with bleomycin response. We found that miR-541-5p expression is downregulated in TGF-β-treated lung fibroblasts and the rat pulmonary fibrosis model. Overexpression of miR-541-5p in lung fibroblasts inhibited mortality of human lung fibroblasts. CONCLUSIONS MiR-541-5p is a key effector in lung fibroblastsby by regulating PDE1A expression at protein translation level and its overexpression is protective against bleomycin-induced lung fibrosis.
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Affiliation(s)
- Liqin Ren
- a Medicine and Pharmacy Research Center , Binzhou Medical University , Yantai , China
| | - Chunyan Yang
- a Medicine and Pharmacy Research Center , Binzhou Medical University , Yantai , China
| | - Yongfeng Dou
- b Binzhou Affiliated Hospital , Binzhou Medical University , Binzhou , China
| | - Renhui Zhan
- a Medicine and Pharmacy Research Center , Binzhou Medical University , Yantai , China
| | - Yi Sun
- c Department of Clinical Medicine , Binzhou Medical University , Yantai , China
| | - Yan Yu
- a Medicine and Pharmacy Research Center , Binzhou Medical University , Yantai , China
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Chen H, Dou Y, Zheng X, Tang Y, Zhang M, Zhang Y, Wang Z, Diao Y. Hydropericardium Hepatitis Syndrome Emerged in Cherry Valley Ducks in China. Transbound Emerg Dis 2016; 64:1262-1267. [DOI: 10.1111/tbed.12500] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Indexed: 11/27/2022]
Affiliation(s)
- H. Chen
- College of Animal Science and Technology; Shandong Agricultural University; Tai'an Shandong China
| | - Y. Dou
- College of Animal Science and Technology; Shandong Agricultural University; Tai'an Shandong China
| | - X. Zheng
- College of Animal Science and Technology; Shandong Agricultural University; Tai'an Shandong China
| | - Y. Tang
- College of Animal Science and Technology; Shandong Agricultural University; Tai'an Shandong China
| | - M. Zhang
- College of Animal Science and Technology; Shandong Agricultural University; Tai'an Shandong China
| | - Y. Zhang
- College of Animal Science and Technology; Shandong Agricultural University; Tai'an Shandong China
| | - Z. Wang
- College of Animal Science and Technology; Shandong Agricultural University; Tai'an Shandong China
| | - Y. Diao
- College of Animal Science and Technology; Shandong Agricultural University; Tai'an Shandong China
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Chen H, Tang Y, Dou Y, Zheng X, Diao Y. Evidence for Vertical Transmission of Novel Duck-Origin Goose Parvovirus-Related Parvovirus. Transbound Emerg Dis 2016; 63:243-7. [PMID: 26890433 DOI: 10.1111/tbed.12487] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Indexed: 12/31/2022]
Abstract
In 2015, novel duck-origin goose parvovirus-related parvovirus (N-GPV) infection progressively appeared in commercial Cherry Valley duck flocks in North China. Diseased ducks were observed to have beak atrophy and dwarfism syndrome (BADS). A previous study showed that a high seropositive rate for N-GPV indicated a latent infection in most breeder duck flocks. To investigate this possibility in hatching eggs collected from N-GPV-infected breeder ducks, 120 eggs were collected at various stages of embryonic development for viral DNA detection and an N-GPV-specific antibody test. N-GPV DNA was present in nine hatching eggs, eleven duck embryo and eight newly hatched ducklings. Of the newly hatched ducklings, 58.33% (21/36) were seropositive. Further, two isolates were obtained from a 12-day-old duck embryo and a newly hatched duckling. N-GPV infection did not reduce the fertilization rate and hatchability. These results indicate possible vertical transmission of N-GPV and suggest that it may be transmitted from breeder ducks to ducklings in ovo.
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Affiliation(s)
- H Chen
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an, Shandong, China
| | - Y Tang
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an, Shandong, China
| | - Y Dou
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an, Shandong, China
| | - X Zheng
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an, Shandong, China
| | - Y Diao
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an, Shandong, China
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Boutrin MC, Yu Y, Wang C, Aruni W, Dou Y, Shi L, Fletcher HM. A putative TetR regulator is involved in nitric oxide stress resistance in Porphyromonas gingivalis. Mol Oral Microbiol 2015; 31:340-53. [PMID: 26332057 DOI: 10.1111/omi.12128] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2015] [Indexed: 02/02/2023]
Abstract
To survive in the periodontal pocket, Porphyromonas gingivalis, the main causative agent of periodontal disease, must overcome oxidative and nitric oxide (NO) stress. Previously, we reported that, in the presence of NO comparable to stress conditions, the transcriptome of P. gingivalis was differentially expressed, and genes belonging to the PG1178-81 cluster were significantly upregulated. To further evaluate their role(s) in NO stress resistance, these genes were inactivated by allelic exchange mutagenesis. Isogenic mutants P. gingivalis FLL460 (ΔPG1181::ermF) and FLL461 (ΔPG1178-81::ermF) were black-pigmented, with gingipain and hemolytic activities comparable to that of the wild-type strain. Whereas the recovery of these isogenic mutants from NO stress was comparable to the wild-type, there was increased sensitivity to hydrogen peroxide-induced stress. RNA-Seq analysis under conditions of NO stress showed that approximately 5 and 8% of the genome was modulated in P. gingivalis FLL460 and FLL461, respectively. The PG1178-81 gene cluster was shown to be part of the same transcriptional unit and is inducible in response to NO stress. In the presence of NO, PG1181, a putative transcriptional regulator, was shown to bind to its own promoter region and that of several other NO responsive genes including PG0214 an extracytoplasmic function σ factor, PG0893 and PG1236. Taken together, the data suggest that PG1181 is a NO responsive transcriptional regulator that may play an important role in the NO stress resistance regulatory network in P. gingivalis.
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Affiliation(s)
- M-C Boutrin
- Division of Microbiology and Molecular Genetics, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - Y Yu
- School of Pharmacy, Fudan University, Shanghai, China
| | - C Wang
- Division of Microbiology and Molecular Genetics, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - W Aruni
- Division of Microbiology and Molecular Genetics, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - Y Dou
- Division of Microbiology and Molecular Genetics, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - L Shi
- School of Pharmacy, Fudan University, Shanghai, China
| | - H M Fletcher
- Division of Microbiology and Molecular Genetics, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, USA.,Institute of Oral Biology, Kyung Hee University, Seoul, Korea
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Dou Y, Aruni W, Muthiah A, Roy F, Wang C, Fletcher HM. Studies of the extracytoplasmic function sigma factor PG0162 in Porphyromonas gingivalis. Mol Oral Microbiol 2015. [PMID: 26216199 DOI: 10.1111/omi.12122] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
PG0162, annotated as an extracytoplasmic function (ECF) sigma factor in Porphyromonas gingivalis, is composed of 193 amino acids. As previously reported, the PG0162-deficient mutant, P. gingivalis FLL350 showed significant reduction in gingipain activity compared with the parental strain. Because this ECF sigma factor could be involved in the virulence regulation in P. gingivalis, its genetic properties were further characterized. A 5'-RACE analysis showed that the start of transcription of the PG0162 gene occurred from a guanine (G) residue 69 nucleotides upstream of the ATG translation initiation codon. The function of PG0162 as a sigma factor was confirmed in a run-off in vitro transcription assay using the purified rPG0162 and RNAP core enzyme from Escherichia coli with the PG0162 promoter as template. As an appropriate PG0162 inducing environmental signal is unknown, a strain overexpressing the PG0162 gene designated P. gingivalis FLL391 was created. Compared with the wild-type strain, transcriptome analysis of P. gingivalis FLL391 showed that approximately 24% of the genome displayed altered gene expression (260 upregulated genes; 286 downregulated genes). Two other ECF sigma factors (PG0985 and PG1660) were upregulated more than two-fold. The autoregulation of PG0162 was confirmed with the binding of the rPG0162 protein to the PG0162 promoter in electrophoretic mobility shift assay. In addition, the rPG0162 protein also showed the ability to bind to the promoter region of two genes (PG0521 and PG1167) that were most upregulated in P. gingivalis FLL391. Taken together, our data suggest that PG0162 is a sigma factor that may play an important role in the virulence regulatory network in P. gingivalis.
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Affiliation(s)
- Y Dou
- Division of Microbiology and Molecular Genetics, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - W Aruni
- Division of Microbiology and Molecular Genetics, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - A Muthiah
- Division of Microbiology and Molecular Genetics, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - F Roy
- Division of Microbiology and Molecular Genetics, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - C Wang
- Division of Microbiology and Molecular Genetics, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - H M Fletcher
- Division of Microbiology and Molecular Genetics, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, USA.,Institute of Oral Biology, Kyung Hee University, Seoul, Republic of Korea
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Dou Y, Robles A, Roy F, Aruni AW, Sandberg L, Nothnagel E, Fletcher HM. The roles of RgpB and Kgp in late onset gingipain activity in the vimA-defective mutant of Porphyromonas gingivalis W83. Mol Oral Microbiol 2015; 30:347-60. [PMID: 25858089 DOI: 10.1111/omi.12098] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/31/2015] [Indexed: 11/26/2022]
Abstract
Previous studies have shown that VimA, an acetyltransferase, can modulate gingipain biogenesis in Porphyromonas gingivalis. Inactivation of the vimA gene resulted in isogenic mutants that showed a late onset of gingipain activity that only occurred during the stationary growth phase. To further elucidate the role and contribution of the gingipains in this VimA-dependent process, isogenic mutants defective in the gingipain genes in the vimA-deficient genetic background were evaluated. In contrast with the wild-type strain, RgpB and Kgp gingipain activities were absent in exponential phase in the ∆rgpA::tetQ-vimA::ermF mutant. However, these activities increased to 31 and 53%, respectively, of that of the wild-type during stationary phase. In the ∆rgpA::cat-∆kgp::tetQ-vimA::ermF mutant, the RgpB protein was observed in the extracellular fraction but no activity was present even at the stationary growth phase. There was no gingipain activity observed in the ∆rgpB::cat-∆kgp::tetQ-vimA::ermF mutant whereas Kgp activity in ∆rgpA::cat-∆rgpB::tetQ-vimA::ermF mutant was 24% of the wild-type at late stationary phase. In contrast to RgpA, the glycosylation profile of the RgpB catalytic domain from both W83 and P. gingivalis FLL92 (vimA::ermF) showed similarity. Taken together, the results suggest multiple gingipain activation pathways in P. gingivalis. Whereas the maturation pathways for RgpA and RgpB are different, the late-onset gingipain activity in the vimA-defective mutant was due to activation/maturation of RgpB and Kgp. Moreover, unlike RgpA, which is VimA-dependent, the maturation/activation pathways for RgpB and Kgp are interdependent in the absence VimA.
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Affiliation(s)
- Y Dou
- Division of Microbiology and Molecular Genetics, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - A Robles
- Division of Microbiology and Molecular Genetics, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - F Roy
- Division of Microbiology and Molecular Genetics, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - A W Aruni
- Division of Microbiology and Molecular Genetics, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - L Sandberg
- Division of Microbiology and Molecular Genetics, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - E Nothnagel
- Botany and Plant Sciences, University of California, Riverside, CA, USA
| | - H M Fletcher
- Division of Microbiology and Molecular Genetics, School of Medicine, Loma Linda University, Loma Linda, CA, USA.,Institute of Oral Biology, Kyung Hee University, Seoul, Korea
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Liu J, Wu J, Dou Y, Lv M, Tang J, Zhou YX. [Assessment of quality of life after multiple arthroplasty]. Beijing Da Xue Xue Bao Yi Xue Ban 2015; 47:285-288. [PMID: 25882946] [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: 06/04/2023]
Abstract
OBJECTIVE To evaluate the effectiveness of conducting multiple arthroplasty to treat multiple joints disease in terms of quality of life (QOL) and function improvement. METHODS We compared our results with the reported results of single and dual arthroplasty to see if there is any improvement in QOL, functional scores or complications. In this study, 13 patients admitted to Department of Adult Reconstructive Surgery, Beijing Jishuitan hospital from 2005 to 2009 were included. Questionnaires SF-36 were used to evaluate the QOL. Harris hip score, American Knee Society Score (KSS) were used to evaluate the joint function. The patients were evaluated before surgery to the latest follow up. RESULTS SF-36 has changed as follow: physical function 4.17 ± 14.43 → 65.83 ± 24.76, role physical 25.00 ± 26.11 → 60.42 ± 45.8, bodily pain 23.83 ± 21.41 → 76.88 ± 20.89, general health 53.33 ± 33.87 → 76.67 ± 14.67, vitality 50.42 ± 17.25 → 71.67 ± 16.28, social functioning 29.17 ± 33.50 → 73.96 ± 33.90, role emotional 22.08 ± 35.61 → 77.77 ± 41.03, mental health 53.33 ± 25.70 → 82.67 ± 14.41, which indicated that they all improved greatly after the surgery (P < 0.05). Harris score increased from 37.68 ± 14.71 before the surgery to 83.36 ± 13.54 after the surgery. KSS has also showed sharp improvement (P < 0.001) in both clinical score (42.52 ± 23.83 → 77.74 ± 20.67) and function score (-2.61 ± 22.56 → 65.65 ± 30.76). CONCLUSION Multiple arthroplasty is one of the most effective methods which can markedly improve the quality of life in patients with multiple joints disease. But complications are common and joint functions are relatively poor.
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Affiliation(s)
- J Liu
- Department of Adult Reconstructive Surgery, Beijing Jishuitan Hospital, Beijing 100035, China
| | - J Wu
- Department of Adult Reconstructive Surgery, Beijing Jishuitan Hospital, Beijing 100035, China
| | - Y Dou
- Department of Adult Reconstructive Surgery, Beijing Jishuitan Hospital, Beijing 100035, China
| | - M Lv
- Department of Adult Reconstructive Surgery, Beijing Jishuitan Hospital, Beijing 100035, China
| | - J Tang
- Department of Adult Reconstructive Surgery, Beijing Jishuitan Hospital, Beijing 100035, China
| | - Y X Zhou
- Department of Adult Reconstructive Surgery, Beijing Jishuitan Hospital, Beijing 100035, China
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Cheng J, Anastasi J, Yue M, Dou Y, Shen Q, Larson R, Vardiman J. 17 IDENTIFYING DISTINCT DIFFERENTIATION/LINEAGE-SPECIFIC DRUG-SENSITIVE CHROMATIN STRUCTURE AND THE UNDERLYING NOVEL MUTATIONS IN MDS AND LEUKEMIAS. Leuk Res 2015. [DOI: 10.1016/s0145-2126(15)30018-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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McKenzie RME, Aruni W, Johnson NA, Robles A, Dou Y, Henry L, Boskovic DS, Fletcher HM. Metabolome variations in the Porphyromonas gingivalis vimA mutant during hydrogen peroxide-induced oxidative stress. Mol Oral Microbiol 2014; 30:111-27. [PMID: 25055986 DOI: 10.1111/omi.12075] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/19/2014] [Indexed: 01/01/2023]
Abstract
The adaptability and survival of Porphyromonas gingivalis in the oxidative microenvironment of the periodontal pocket are indispensable for survival and virulence, and are modulated by multiple systems. Among the various genes involved in P. gingivalis oxidative stress resistance, vimA gene is a part of the 6.15-kb locus. To elucidate the role of a P. gingivalis vimA-defective mutant in oxidative stress resistance, we used a global approach to assess the transcriptional profile, to study the unique metabolome variations affecting survival and virulence in an environment typical of the periodontal pocket. A multilayered protection strategy against oxidative stress was noted in P. gingivalis FLL92 with upregulation of detoxifying genes. The duration of oxidative stress was shown to differentially modulate transcription with 94 (87%) genes upregulated twofold during 10 min and 55 (83.3%) in 15 min. Most of the upregulated genes (55%), fell in the hypothetical/unknown/unassigned functional class. Metabolome variation showed reduction in fumarate and formaldehyde, hence resorting to alternative energy generation and maintenance of a reduced metabolic state. There was upregulation of transposases, genes encoding for the metal ion binding protein transport and secretion system.
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Affiliation(s)
- R M E McKenzie
- Division of Microbiology and Molecular Genetics, School of Medicine, Loma Linda University, Loma Linda, CA, USA; Center for Dental Research, School of Dentistry, Loma Linda University, Loma Linda, CA, USA
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Dawson A, Lutz J, Date K, Dou Y, Flynn M, Maraveyas A, Greenman J, Madden L. Microfluidic Maintenance of Ovarian Tumour Biopsies for the Study of Hypercoaguability During Chemotherapy. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu338.31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Tong B, Wan B, Wei Z, Wang T, Zhao P, Dou Y, Lv Z, Xia Y, Dai Y. Role of cathepsin B in regulating migration and invasion of fibroblast-like synoviocytes into inflamed tissue from patients with rheumatoid arthritis. Clin Exp Immunol 2014; 177:586-97. [PMID: 24749816 PMCID: PMC4137842 DOI: 10.1111/cei.12357] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/14/2014] [Indexed: 12/27/2022] Open
Abstract
Cathepsin B (CB), an important proteinase that participates in joint destruction in rheumatoid arthritis (RA), exhibits higher expression in fibroblast-like synoviocyte (FLS) of abnormal proliferative synovial tissues. Whether and how it affects the biological behaviours of RA-FLS, such as migration and invasion, are poorly understood. In the present study, CB expression in synovial tissues of patients with RA and ostearthritis (OA) were measured by quantitative polymerase chain reaction (qPCR) and immunohistochemistry (IHC), respectively. Stable depletion of endogenous CB was achieved by small interfering RNA (siRNA) transfection, and decrease of CB activity was acquired by using its specific inhibitor (CA074Me). The effects of CA074Me and RNA interference (RNAi) treatments on proliferation, migration, invasion, matrix metalloproteinase (MMP)-2/-9 expression, focal adhesion kinase (FAK) activation, and mitogen-activated protein kinases (MAPKs) phosphorylation of FLS were analysed. In RA synovial tissues, CB was expressed at elevated levels compared with OA synovial tissues. CA074Me could inhibit invasion of FLS obtained from RA patients in an ex-vivo invasion model. CA074Me and siRNA treatments suppressed the migration and invasion of FLS, reduced the activity, expression and mRNA level of MMP-2, restrained the activation of FAK and reduced the expression of F-actin. Moreover, CA074Me decreased the phosphorylation of P38 MAPK and c-Jun N-terminal kinase (JNK) in FLS, while siCB treatment reduced the phosphorylation of P38 but not JNK. CB substantially contributes to the invasive phenotype of FLS that leads to joint destruction in RA. This proteinase may show promise as a therapeutic target in inflammatory arthritis.
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Affiliation(s)
- B Tong
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing, China
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Zhang J, Dou Y, Zhong Z, Su J, Xu D, Tang F, Zhang X, Zhao Y, Zeng X, Zhang F, You X. Clinical characteristics and therapy exploration of active human cytomegalovirus infection in 105 lupus patients. Lupus 2014; 23:889-97. [PMID: 24836584 DOI: 10.1177/0961203314532560] [Citation(s) in RCA: 19] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2013] [Accepted: 03/14/2014] [Indexed: 11/16/2022]
Abstract
Systemic lupus erythematosus (SLE) has protean clinical manifestations of varying severity over the course of its onset, exacerbation, remission and flare that could often pose significant challenges for clinicians in their decision making as to whether to treat aggressively or to look for concurrent conditions such as infection with opportunistic pathogens. Human cytomegalovirus (HCMV) is one of those pathogens and is frequently encountered in our daily management of lupus patients. To investigate the clinical characteristics and therapeutic options of active HCMV infection in patients with SLE, we retrospectively reviewed clinical data of 105 inpatients in our department of Rheumatology and Clinical Immunology of Peking Union Medical College Hospital (PUMCH) diagnosed with both SLE and active HCMV infection from January 2006 to January 2012. Three groups were designated that included 42 cases of HCMV triggering SLE, 31 cases of HCMV exacerbating SLE, and 32 cases of HCMV mimicking SLE flare based on the relationship of HCMV infection and SLE. 1) Hematocytopenia (81%), fever (73.3%) and liver dysfunction (54.3%) were the most common clinical manifestations. The differences among the three groups with regard to butterfly erythema, cutaneous vasculitis, arthritis, serositis, central nervous system involvement and renal involvement were statistically significant (p < 0.05). 2) Positive rate of HCMV-pp65, compared with HCMV-IgM and HCMV-DNA, was the highest (84.9%) in patients with SLE and active HCMV infection. 3) Following 14-21 days of inductive treatment with ganciclovir, a total of 26 out of 56 patients were still positive with HCMV-IgM (nine of 19, 47.6%) and pp65 (17/37, 45.9%). Among them, seven cases suffered HCMV relapses in three months with six cases of sustained HCMV-pp65 antigenemia. In conclusion, hematocytopenia, fever and liver dysfunction should remind us to consider HCMV infection. Butterfly erythema, cutaneous vasculitis, arthritis, serositis, central nervous system involvement and renal lesion were relatively characteristic symptoms of lupus activity. HCMV-pp65 is a sensitive indicator to guide antiviral therapy. Induction therapy using ganciclovir with a duration of 14∼21 days is not sufficient, and continued HCMV-pp65 positivity may require prolonged antiviral treatment in lupus patients.
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Affiliation(s)
- J Zhang
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China Department of Immunology and Rheumatology, LiHuili Hospital, Medical School of Ningbo University, Ningbo, China
| | - Y Dou
- Department of Clinical Lab, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Z Zhong
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - J Su
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - D Xu
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - F Tang
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - X Zhang
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Y Zhao
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - X Zeng
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - F Zhang
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - X You
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
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Yu H, Wang Y, Li L, Dou Y, Li X, Chen Y, Zhao Y. Survey and analysis on birth quality influence factors of 300 cases of newborns. CLIN EXP OBSTET GYN 2014. [DOI: 10.12891/ceog15282014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Yu HF, Wang YX, Li L, Dou Y, Li XY, Chen YN, Zhao YN. Survey and analysis on birth quality influence factors of 300 cases of newborns. CLIN EXP OBSTET GYN 2014; 41:121-123. [PMID: 24779233] [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: 06/03/2023]
Abstract
PURPOSE Little research has been conducted to specifically identify the correlations of birth quality influence factors of newborns and hemoglobin of gravidae and puerperal with birth weight of newborns. To investigate the correlations of birth quality influence factors of newborns and hemoglobin of gravidae and puerperal with birth weight of newborns in order to provide a scientific basis for promoting health ofgravidae and their newborns. MATERIALS AND METHODS Three hundred cases of gravidae and puerpera treated in the present hospital were randomly selected, and questionnaire survey method was used to survey their basic situations. Also, hemoglobin values in different pregnancy stages were detected. According to birth weight of newborns, gravidae were divided into several groups to compare antepartum hemoglobin levels of various groups of gravidae. In addition, logistic regression analysis was carried out for birth quality influence factors of newborns. RESULTS Logistic regression analysis result showed that birth quality influence factors of newborns included age, nutrition situation and pregnancy healthcare education of gravidae and puerpera. In addition, birth weight of newborns was positively related to antepartum hemoglobin level of gravidae (r = 0.746, p < 0.01). CONCLUSIONS It was feasible for promoting smooth delivery of gravidae and puerpera, reducing incidence rate of mother and baby complications and effectively enhancing health situations of newborns to strengthen health monitoring of gravidae and conduct health education intervention.
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Osbourne D, Aruni AW, Dou Y, Perry C, Boskovic DS, Roy F, Fletcher HM. VimA-dependent modulation of the secretome in Porphyromonas gingivalis. Mol Oral Microbiol 2012; 27:420-35. [PMID: 23134608 DOI: 10.1111/j.2041-1014.2012.00661.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The VimA protein of Porphyromonas gingivalis is a multifunctional protein involved in cell surface biogenesis. To further determine if its acetyl coenzyme A (acetyl-CoA) transfer and putative sorting functions can affect the secretome, its role in peptidoglycan biogenesis and effects on the extracellular proteins of P. gingivalis FLL92, a vimA-defective mutant, were evaluated. There were structural and compositional differences in the peptidoglycan of P. gingivalis FLL92 compared with the wild-type strain. Sixty-eight proteins were present only in the extracellular fraction of FLL92. Fifteen proteins present in the extracellular fraction of the parent strain were missing in the vimA-defective mutant. These proteins had protein sorting characteristics that included a C-terminal motif with a common consensus Gly-Gly-CTERM pattern and a polar tail consisting of aromatic amino acid residues. These observations suggest that the VimA protein is likely involved in peptidoglycan synthesis, and corroborates our previous report, which suggests a role in protein sorting.
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Affiliation(s)
- D Osbourne
- Division of Microbiology & Molecular Genetics, School of Medicine, Loma Linda University, Loma Linda, CA 92350, USA
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Takasawa K, Takaeda C, Higuchi M, Maeda T, Tomosugi N, Ueda N, Sasaki Y, Ikezoe M, Hagiwara M, Furuhata S, Murakami M, Shimonaka Y, Yamazaki S, Hamahata S, Hamahata S, Oue M, Kuragano T, Furuta M, Yahiro M, Kida A, Otaki Y, Hasuike Y, Nonoguchi H, Nakanishi T, Sarafidis P, Rumjon A, Ackland D, Maclaughlin H, Bansal SS, Macdougall IC, Panichi V, Rosati A, Malagnino E, Giusti R, Casani A, Betti G, Conti P, Bernabini G, Bernabini G, Gabrielli C, Caiani D, Scatena A, Migliori M, Pizzarelli F, Mitsopoulos E, Tsiatsiou M, Minasidis I, Kousoula V, Intzevidou E, Passadakis P, Vargemezis V, Tsakiris D, Yahiro M, Kida A, Otaki Y, Hasuike Y, Nonoguchi H, Nakanishi T, Kuragano T, Lines SW, Carter AM, Dunn EJ, Wright MJ, Aoyagi R, Miura T, De Paola L, Lombardi G, Coppolino G, Lombardi L, Hasuike Y, Fukumoto H, Kaibe S, Tokuyama M, Kida A, Otaki Y, Kuragano T, Nonoguchi H, Hiwasa M, Miyamoto T, Ohue H, Matsumoto A, Toyoda K, Nakanishi T, Rottembourg J, Emery C, Lafuma A, Wernli J, Zakin L, Mahi L, Borzych-Duzalka D, Bilginer Y, Pape L, Ha IS, Bak M, Chua A, Rees L, Pesle S, Cano F, Urzykowska A, Emre S, Russcasso J, Ramela V, Printza N, White C, Kuzmanovska D, Andrea V, Muller-Wiefel D, Warady B, Schaefer F, Chung JH, Park MK, Kim HL, Shin BC, Fujikawa T, Kuji T, Kakimoto M, Shibata K, Satta H, Nishihara M, Kawata S, Koguchi N, Toya Y, Umemura S, David V, Michel G, Maxime H, Paul L, Sebastien K, Francois V, Kuntsevich V, Dou Y, Thijssen S, Levin NW, Kotanko P, Kim BS, Kim BS, Park WD, Song HC, Kim HG, Kim YO, Woodburn K, Fong KL, Moriya Y, Tagawa Y, Maeda T, Kanda F, Morita N, Tomosugi N, London G, London G, Zaoui P, Covic A, Dellanna F, Goldsmith D, Gesualdo L, Mann J, Combe C, Turner M, Meunzberg M, Macdonald K, Abraham I, Gesualdo L, Combe C, Covic A, Dellanna F, Goldsmith D, London G, Mann J, Zaoui P, Turner M, Meunzberg M, Macdonald K, Abraham I, Rottembourg J, Guerin A, Diaconita M, Apruzzese R, Dou Y, Thijssen S, Kruse A, Ouellet G, Levin NW, Kotanko P, Bond C, Jensen D, Wang S, Pham E, Rubin J, Sika M, Niecestro R, Woodburn K, Fong KL, Sloneker S, Strzemienski P, Solon E, Moriya Y, Tagawa Y, Stamopoulos D, Mpakirtzi N, Grapsa E, Gogola B, Manios E, Afentakis N, Ewer J, Macdougall IC. Renal anaemia - CKD 5D. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Susla O, Shin HS, Jung YS, Rim H, Speer T, Owala FO, Razawi M, Holy E, Ferdinand B, Danilo F, Luscher TF, Tanner FC, Markaki A, Kyriazis J, Petrakis I, Mavroeidi V, Perakis K, Fragkiadakis GA, Venyhaki M, Tzanakakis M, Vardaki E, Maraki K, Doskas T, Daphnis E, Bregman R, Vale B, Lemos C, Kawakami L, Silva MI, Zhu F, Kaysen G, Kotanko P, Abbas SR, Dou Y, Heymsfield S, Levin NW, Turkmen K, Kayikcioglu H, Guney I, Altintepe L, Ozbek O, Tonbul HZ, Kaysen GA, Kaysen GA, Usvyat LA, Thijssen S, Levin NW, Kotanko P, Mutluay R, Konca Degertekin C, Derici U, Yilmaz MI, Akkiyal F, Gultekin S, Gonen S, Deger SM, Arinsoy T, Sindel S, Hueso M, Torras J, Carrera M, Vidal A, Navarro E, Rivas I, Rama I, Bolanos N, Varela C, Martinez-Castelao A, Grinyo JM, Harving F, Svensson M, Schmidt EB, Jorgensen KA, Christensen JH, Park JH, Koo EH, Kim HK, Kim MS, Cho AJ, Lee JE, Jang HR, Huh W, Kim DJ, Kim YG, Oh HY, Zawiasa A, Nowak D, Nowicki M, Nathalie N, Griet G, Eva S, Raymond V, Ng KP, Stringer S, Jesky M, Dutton M, Ferro C, Cockwell P, Jia T, Gama Axelsson T, Lindholm B, Heimburger O, Barany P, Stenvinkel P, Qureshi AR, Quiroga B, Goicoechea M, Garcia de Vinuesa S, Verdalles U, Reque J, Panizo N, Arroyo D, Santos A, Macias N, Luno J, Honda H, Hirano T, Ueda M, Kojima S, Mashiba S, Hayase Y, Michihata T, Akizawa T, Gungor O, Sezis Demirci M, Kircelli F, Tatar E, Hur E, Sen S, Toz H, Basci A, Ok E, Sepe V, Albrizio P, Gnecchi M, Cervio E, Esposito P, Rampino T, Libetta C, Dal Canton A, Faria MS, Faria MS, Ribeiro S, Silva G, Nascimento H, Rocha-Pereira P, Miranda V, Vieira E, Santos R, Mendonca D, Quintanilha A, Costa E, Belo L, Santos-Silva A, Pruijm M, Pruijm M, Hofmann L, Heuvelin E, Forni V, Coristine A, Stuber M, Vogt B, Burnier M, Chiappini MG, Ammann T, Muzzi L, Grosso A, Sabry A, Bansal V, Hoppensteadt D, Jeske W, Fareed J. Nutrition, inflammation and oxidative stress - CKD 1-5. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Donadio C, Kanaki A, Martin-Gomez A, Garcia S, Palacios-Gomez M, Donadio C, Calia D, Colombini E, DI Francesco F, Ghimenti S, Kanaki A, Onor M, Tognotti D, Fuoco R, Marka-Castro E, Torres Zamora MI, Giron-Mino J, Jaime-Solis MA, Arteaga LM, Romero H, Marka-Castro E, Akonur A, Leypoldt K, Asola M, Culleton B, Eloot S, Glorieux G, Nathalie N, Vanholder R, Perez de Jose A, Verdalles Guzman U, Abad Esttebanez S, Vega Martinez A, Barraca D, Yuste C, Bucalo L, Rincon A, Lopez-Gomez JM, Bataille P, Celine P, Raymond A, Francois G, Herve L, Michel D, Jean Louis R, Zhu F, Kotanko P, Thijssen S, Levin NW, Papamichail N, Bougiakli M, Gouva C, Antoniou S, Gianitsi S, Vlachopanou A, Chachalos S, Naka K, Kaarsavvidou D, Katopodis K, Michalis L, Sasaki K, Yasuda K, Yamato M, Surace A, Rovatti P, Steckiph D, Bandini R, Severi S, Dellacasa Bellingegni A, Santoro A, Arias M, Arias M, Sentis A, Perez N, Fontsere N, Vera M, Rodriguez N, Arcal C, Ortega N, Uriza F, Cases A, Maduell F, Abbas SR, Abbas SR, Zhu F, Kotanko P, Levin NW, Georgianos P, Sarafidis P, Nikolaidis P, Lasaridis A, Ahmed A, Ahmed A, Kaoutar H, Mohammed B, Zouhir O, Balter P, Ginsberg N, Taylor P, Sullivan T, Usvyat LA, Levin NW, Kotanko P, Zabetakis P, Moissl U, Ferrario M, Garzotto F, Wabel P, Cruz D, Tetta C, Signorini MG, Cerutti S, Brendolan A, Ronco C, Heaf J, Axelsen M, Pedersen RS, Ahmed A, Ahmed A, Amine H, Oualim Z, Ammirati AL, Guimaraes de Souza NK, Nemoto Matsui T, Luiz Vieira M, Alves de Oliveira WA, Fischer CH, Dias Carneiro F, Iizuka IJ, Aparecida de Souza M, Mallet AC, Cruz Andreoli MC, Cardoso Dos Santos BF, Rosales L, Dou Y, Carter M, Thijssen S, Kotanko P, Testa A, Sottini L, Giacon B, Prati E, Loschiavo C, Brognoli M, Marseglia C, Tommasi A, Sereni L, Palladino G, Bove S, Bosticardo G, Schillaci E, Detoma P, Bergia R, Park JW, Moon SJ, Choi HY, Ha SK, Park HC, Liao Y, Zhang L, Fu P, Igarashi H, Suzuki N, Esashi S, Masakane I, Panichi V, De Ferrari G, Saffiotti S, Sidoti A, Biagioli M, Bianchi S, Imperiali P, Gabrielli C, Conti P, Patrone P, Rombola G, Falqui V, Mura C, Icardi A, Rosati A, Santori F, Mannarino A, Bertucci A, Steckiph D, Jeong J, Jeong J, Kim OK, Kim NH, Bots M, Den Hoedt C, Grooteman MP, Van der Weerd NC, Mazairac AHA, Levesque R, Ter Wee PM, Nube MJ, Blankestijn P, Van den Dorpel MA, Park Y, Jeon J, Tessitore N, Tessitore N, Bedogna V, Girelli D, Corazza L, Jacky P, Guillaume Q, Julien B, Marcinkowski W, Drozdz M, Milkowski A, Rydzynska T, Prystacki T, August R, Benedyk-Lorens E, Bladek K, Cina J, Janiszewska G, Kaczmarek A, Lewinska T, Mendel M, Paszkot M, Trafidlo E, Trzciniecka-Kloczkowska M, Vasilevsky A, Konoplev G, Lopatenko O, Komashnya A, Visnevsky K, Gerasimchuk R, Neivelt I, Frorip A, Vostry M, Racek J, Rajdl D, Eiselt J, Malanova L, Pechter U, Selart A, Ots-Rosenberg M, Krieter DH, Seidel S, Merget K, Lemke HD, Wanner C, Krieter DH, Canaud B, Lemke HD, Rodriguez A, Morgenroth A, Von Appen K, Dragoun GP, Wanner C, Fluck R, Fouque D, Lockridge R, Motomiya Y, Uji Y, Hiramatsu T, Ando Y, Furuta M, Furuta M, Kuragano T, Kida A, Yahiro M, Otaki Y, Hasuike Y, Nonoguchi H, Nakanishi T, Sain M, Sain M, Kovacic V, Ljutic D, Radic J, Jelicic I, Yalin SF, Yalin SF, Trabulus S, Yalin AS, Altiparmak MR, Serdengecti K, Ohtsuka A, Fukami K, Ishikawa K, Ando R, Kaida Y, Adachi T, Sugi K, Okuda S, Nesterova OB, Nesterova OB, Suglobova ED, Golubev RV, Vasiliev AN, Lazeba VA, Smirnov AV, Arita K, Kihara E, Maeda K, Oda H, Doi S, Masaki T, Hidaka S, Ishioka K, Oka M, Moriya H, Ohtake T, Nomura S, Kobayashi S, Wagner S, Gmerek A, Wagner J, Wizemann V, Eftimovska - Otovic N, Spaseska-Gjurovska K, Bogdanovska S, Babalj - Banskolieva E, Milovanceva M, Grozdanovski R, Pisani A, Riccio E, Mancini A, Ambuhl P, Astrid S, Ivana P, Martin H, Thomas K, Hans-Rudolf R, Daniel A, Denes K, Marco M, Wuthrich RP, Andreas S, Andrulli S, Altieri P, Sau G, Bolasco P, Pedrini LA, Basile C, David S, Feriani M, Nebiolo PE, Ferrara R, Casu D, Logias F, Tarchini R, Cadinu F, Passaghe M, Fundoni G, Villa G, DI Iorio BR, Zoccali C, Locatelli F, Kihara E, Arita K, Hamamoto M, Maeda K, Oda H, Doi S, Masaki T, Lee DY, Kim B, Moon KH, LI Z, Fu P, Ahrenholz P, Ahrenholz P, Winkler RE, Waitz G, Wolf H, Grundstrom G, Alquist M, Holmquist M, Christensson A, Bjork P, Abdgawad M, Ekholm L, Segelmark M, Corsi C, Santoro A, De Bie J, Mambelli E, Mortara D, Santoro A, Severi S, Arroyo D, Arroyo D, Panizo N, Quiroga B, Reque J, Melero R, Rodriguez-Ferrero M, Rodriguez-Benitez P, Anaya F, Luno J, Ragon A, James A, Brunet P, Ribeiro S, Faria MS, Rocha S, Rodrigues S, Catarino C, Reis F, Nascimento H, Fernandes J, Miranda V, Quintanilha A, Belo L, Costa E, Santos-Silva A, Arund J, Tanner R, Fridolin I, Luman M, Clajus C, Clajus C, Kielstein JT, Haller H, David S, Basile C, Basile C, Libutti P, Lisi P, Vernaglione L, Casucci F, Losurdo N, Teutonico A, Lomonte C, Krisp C, Gmerek A, Wagner J, Wolters DA, Pedrini LA, Matsuyama M, Tomo T, Ishida K, Matsuyama K, Nakata T, Kadota J, Caiazzo M, Monari E, Cuoghi A, Bellei E, Bergamini S, Palladino G, Tomasi A, Baranger T, Seniuta P, Berge F, Drouillat V, Frangie C, Rosier E, Labonia W, Lescano A, Rubio D, Von der Lippe N, Jorgensen JA, Osthus TB, Waldum B, Os I, Bossola M, DI Stasio E, Antocicco M, Tazza L, Griveas I, Karameris A, Pasadakis P, Savica V, Santoro D, Saitta S, Tigano V, Bellinghieri G, Gangemi S, Daniela R, Checherita IA, Ciocalteu A, Vacaroiu IA, Niculae A, Bladek K, Stefaniak E, Pietrzak I, Krupa D, Garred L, Santoro A, Mancini E, Corrazza L, Atti M, Afsar B, Stamopoulos D, Mpakirtzi N, Gogola B, Zeibekis M, Stivarou D, Panagiotou M, Grapsa E, Vega Vega O, Barraca Nunez D, Abad Esttebanez S, Bucalo L, Yuste C, Lopez-Gomez JM, Fernandez-Lucas M, Gomis A, Teruel JL, Elias S, Quereda C, Hignell L, Humphrey S, Pacy N, Stamopoulos D, Mpakirtzi N, Afentakis N, Grapsa E. Extracorporeal dialysis: techniques and adequacy. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Jiao Y, Pani A, Jang H, Dou Y, Smith J, Richard S. 3.139 ALTERATIONS IN MARKERS OF AGING IN SUBSTANTIA NIGRA OF MICE LACKING GLUTATHIONE S-TRANSFERASE PI (GSTPI). Parkinsonism Relat Disord 2012. [DOI: 10.1016/s1353-8020(11)70855-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yang Y, Wang H, Dou Y, Wang Y, Han G, Wang R, Wang L, Guo R, Xiao H, Li X, Shen B, Shi Y, Chen G, Li Y. Colitogenic role of tumour necrosis factor (TNF) receptors in trinitrobenzene sulphonic acid colitis: TNF-R1 ablation does not affect systemic inflammatory response. Clin Exp Immunol 2011; 165:372-82. [PMID: 21668898 DOI: 10.1111/j.1365-2249.2011.04413.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Tumour necrosis factor (TNF)-α plays a critical role in the pathogenesis of T helper type 1-mediated colitis such as Crohn's disease. However, the roles of its two receptors in mediating pathology remain largely unknown. In this study, trinitrobenzene sulphonic acid (TNBS) was used to induce colitis in TNF-receptor single or double knock-out (DKO) BALB/c mice and in wild-type counterparts. TNF-R1(-/-) mice had significantly less weight loss, reduced mortality, colon shortening and oedema, colon histological damage and lower levels of colon myeloperoxidase compared with wild-type (WT) BALB/c mice. A similar manifestation was also observed in TNF-R2(-/-) and TNF-R1(-/-) TNF-R2(-/-) (TNF-R DKO) mice. Strikingly, systemic inflammatory response (including splenomegaly and monocyte expansion) was found in WT and TNF-R1(-/-) mice after TNBS, instead of TNF-R2(-/-) and TNF-R DKO mice. Attenuated pathology of colitis in TNF-R1(-/-) or TNF-R2(-/-) mice correlated with lower amounts of interleukin (IL)-6, IL-1β, monocyte chemotactic protein (MCP)-1, IL-12p70 and interferon (IFN)-γ production in the colons. Importantly, ablation of TNF-R1 or TNF-R2 reduced the number of terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick end-labelling (TUNEL)-positive apoptotic epithelial cells in the affected colons compared with WT TNBS-instilled controls, which might be due to the heightened ratio of Bcl-2/Bax and reduced activity of nuclear factor (NF)-κB. These findings suggest that either TNF-R1 or TNF-R2 plays a pathogenic role in the pathology of colitis and TNF signalling via TNF-R1 or TNF-R2 alone is not sufficient for inducing mucosal damage.
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Affiliation(s)
- Y Yang
- Department of Molecular Immunology, Institute of Basic Medical Sciences, Beijing, China
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Konda R, Osawa T, Nozawa T, Sugimura J, Fujioka T, Ishimoto Y, Ohki T, Uchida L, Kotera N, Tanaka M, Tanaka S, Sugimoto T, Mise N, Wu HY, Ko MJ, Yang JY, Hu FC, Chen SI, Jee SH, Chiu HC, Zumrutdal A, Hur E, Toz H, Ozkahya M, Usta M, Kayikcioglu LM, Sezis M, Asci G, Kahvecioglu S, Duman S, Ok E, Sakaguchi Y, Sonoda M, Kawabata H, Niihata K, Suzuki A, Shoji T, Tsubakihara Y, Emami Naini A, Moradi M, Mortazavi M, Shirani F, Gholamrezaei A, Demir S, San M, Koken T, Seok SJ, Gil HW, Yang JO, Lee EY, Hong SY, Stavroulopoulos A, Kossivakis A, Aresti V, Stamogiannos G, Kalliaropoulos A, Mentis A, Azak A, Huddam B, Kocak G, Altas AB, Sakaci M, Yalcin F, Ortabozkoyun L, Duranay M, Korukluoglu G, Eitner F, Scheithauer S, Mankartz J, Haefner H, Nowicki K, Floege J, Lemmen S, Hara S, Tanaka K, Suwabe T, Ubara Y, Takaichi K, Deleuze S, Bargnoux AS, Rivory JP, Rouanet C, Maurice F, Selcer I, Cristol JP, Dou Y, Thijssen S, Ouellet G, Kruse A, Rosales L, Kotanto P, Levin NW, Shahidi S, Sajjadieh S, Gholamrezaei A, Scholmann T, Straub M, Wagner D, Fliser D, Sester M, Sester U, Sikole A, Trajceska L, Selim G, Gelev S, Dzekova P, Amitov V, Arsov S, Strempska B, Bilinska M, Weyde W, Koszewicz M, Madziarska K, Golebiowski T, Klinger M, Ochi A, Ishimura E, Tsujimoto Y, Kakiya R, Tabata T, Mori K, Shoji T, Yasuda H, Nishizawa Y, Inaba M, Ezeonyeji A, Borg F, Harnett P, Dasgupta B, Raikou VD, Kyriaki D, Zeggos N, Skalioti C, Tzanatou H, Boletis JN, Viaene L, Meijers B, Bammens B, Vanrenterghem Y, Vanderschueren D, Evenepoel P, Ryu DR, An HR, Ryu JH, Yu M, Kim SJ, Kang DH, Choi KB, Miyamoto T, Rashid Qureshi A, Anderstam B, Yamamoto T, Alvestrand A, Stenvinkel P, Lindholm B, Axelsson J, Zitt E, Manamley N, Vervloet M, Georgianos P, Sarafidis P, Kanaki A, Divani M, Haidich AB, Sioulis A, Liakopoulos V, Papagianni A, Nikolaidis P, Lasaridis A, Morgado E, Pinho A, Guedes A, Guerreiro R, Mendes P, Bexiga I, Silva A, Marques J, Neves P. Pathophysiology and clinical studies in CKD 5D. Clin Kidney J 2011. [DOI: 10.1093/ndtplus/4.s2.57] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Dou Y, Liu L, Cheng X, Cao L, Zuo L. Comparison of bioimpedance methods for estimating total body water and intracellular water changes during hemodialysis. Nephrol Dial Transplant 2011; 26:3319-24. [DOI: 10.1093/ndt/gfq854] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Dimova I, Hlushchuk R, Makanya A, Djonov V, Theurl M, Schgoer W, Albrecht K, Beer A, Patsch JR, Schratzberger P, Mahata S, Kirchmair R, Didie M, Christalla P, Rau T, Eschenhagen T, Schumacher U, Lin Q, Zenke M, Zimmmermann W, Hoch M, Fischer P, Stapel B, Missol-Kolka E, Erschow S, Scherr M, Drexler H, Hilfiker-Kleiner D, Diebold I, Petry A, Kennel P, Djordjevic T, Hess J, Goerlach A, Castellano J, Aledo R, Sendra J, Costales P, Badimon L, Llorente-Cortes V, Dworatzek E, Mahmoodzadeh S, Regitz-Zagrosek V, Posa A, Varga C, Berko A, Veszelka M, Szablics P, Vari B, Pavo I, Laszlo F, Brandenburger M, Wenzel J, Bogdan R, Richardt D, Reppel M, Hescheler J, Terlau H, Dendorfer A, Heijman J, Rudy Y, Westra R, Volders P, Rasmusson R, Bondarenko V, Ertas Gokhan MD, Ural Ertan MD, Karaoz Erdal PHD, Aksoy Ayca PHD, Kilic Teoman MD, Kozdag Guliz MD, Vural Ahmet MD, Ural Dilek MD, Poulet C, Christ T, Wettwer E, Ravens U, Van Der Pouw Kraan C, Schirmer S, Fledderus J, Moerland P, Leyen T, Piek J, Van 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Saturday, 17 July 2010. Cardiovasc Res 2010. [DOI: 10.1093/cvr/cvq174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Yan Y, Dou Y, Weng X, Cox C. SU-GG-T-258: Solutions to Transforming a Radiotherapy Clinic with Multigenerational Equipment into a Paperless and Filmless Facility. Med Phys 2010. [DOI: 10.1118/1.3468649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Dou Y, Yan Y, Velasco C, Zhang X, Chao M, Han E, Moros E. SU-GG-T-299: A Digital QA Solution Using 2D Ion Chamber Array. Med Phys 2010. [DOI: 10.1118/1.3468694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Yan Y, Dou Y, Penagaricano J, Ratanatharathorn V, Gardner K, Moros E, Corry P, Zhang X, Chao M, Mihaylov I. SU-FF-T-609: Dose Summation Technology for Radiation Therapy Facilities Equipped with Heterogeneous Planning and Delivery Systems. Med Phys 2009. [DOI: 10.1118/1.3182107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Jawien J, Bian Z, Sheikine Y, Olofsson PS, Pang Y, Edholm T, Dou Y, Metzger D, Hellström PM, Feil R, Hansson GK. Abrogation of mitochondrial transcription in smooth muscle cells impairs smooth muscle contractility and vascular tone. J Physiol Pharmacol 2008; 59:239-252. [PMID: 18622043] [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] [Received: 07/16/2007] [Accepted: 04/25/2008] [Indexed: 05/26/2023]
Abstract
BACKGROUND Smooth muscle cells (SMC) constitute the major contractile cell population of blood vessels and inner organs. SMC contraction depends on energy provided by adenosine triphosphate (ATP) catabolism, which can be generated through oxidative phosphorylation in mitochondria or by anaerobic glycolysis. Mitochondrial activity may also modulate smooth muscle tone by biotransformation of vasoactive mediators. Here, we study the role of mitochondrial DNA gene expression for vascular function in vivo. METHODS Since loss of functional mitochondria in SMC may not be compatible with normal development, we generated mice with inducible SMC-specific abrogation of the mitochondrial transcription factor A (Tfam). Deletion of this gene leads to dysfunctional mitochondria and prevents aerobic ATP production in affected cells. RESULTS Invasive blood pressure monitoring in live animals demonstrated that SMC specific Tfam deletion results in lower blood pressure and a defective blood-pressure response to stress, changes that were not compensated by increased heart rate. The contractility to agonists was reduced in arterial and gastric fundus strips from Tfam-deficient mice. Endothelium-dependent relaxation of arterial strips in response to ACh was also blunted. CONCLUSION Our data show that mitochondrial function is needed for normal gastric contraction, vascular tone, and maintenance of normal blood pressure.
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Affiliation(s)
- J Jawien
- Department of Medicine; Karolinska Institute, Stockholm, Sweden
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Zhao LZ, Guo Y, Dou Y, Wang B, Mi H, Ren YL. Application of artificial neural networks to the nondestructive determination of ciprofloxacin hydrochloride in powder by short-wavelength NIR spectroscopy. J Anal Chem 2007. [DOI: 10.1134/s1061934807120106] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Dou Y, Qu N, Wang B, Chi YZ, Ren YL. Simultaneous determination of two active components in compound aspirin tablets using principal component artificial neural networks (PC-ANNs) on NIR spectroscopy. Eur J Pharm Sci 2007; 32:193-9. [PMID: 17714922 DOI: 10.1016/j.ejps.2007.07.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2007] [Revised: 07/05/2007] [Accepted: 07/09/2007] [Indexed: 10/23/2022]
Abstract
A method for simultaneous, non-destructive analysis of aspirin and phenacetin in compound aspirin tablets with different concentrations has been developed by principal component artificial neural networks (PC-ANNs) on near-infrared (NIR) spectroscopy. In PC-ANNs models, the spectra data were first analyzed by principal component analysis (PCA). Then the scores of the principal compounds (PCs) were chosen as input nodes for input layer instead of the spectra data. The artificial neural networks (ANNs) models using the spectra data as input nodes were also established, which were compared with the PC-ANNs models. Four different preprocessing methods (first-derivation, second-derivation, standard normal variate (SNV) and multiplicative scatter correction (MSC)) were applied to NIR conventional spectra. The result shows the first-derivative model of PC-ANNs multivariate calibration has the lowest training errors and predicting errors. The concept of the degree of approximation was introduced and performed as the selective criterion of the optimum network parameters.
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Affiliation(s)
- Y Dou
- College of Science, Tianjin University of Science & Technology, Tianjin 300222, China
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