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Yuan Y, Ji S, Song Y, Che Z, Xiao L, Tang S, Xiao J. Global trends in diabetic eye disease research from 2012 to 2021. Neural Regen Res 2024; 19:2310-2320. [PMID: 38488565 PMCID: PMC11034595 DOI: 10.4103/1673-5374.391303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 08/22/2023] [Accepted: 10/07/2023] [Indexed: 04/24/2024] Open
Abstract
JOURNAL/nrgr/04.03/01300535-202410000-00032/figure1/v/2024-02-06T055622Z/r/image-tiff Diabetic eye disease refers to a group of eye complications that occur in diabetic patients and include diabetic retinopathy, diabetic macular edema, diabetic cataracts, and diabetic glaucoma. However, the global epidemiology of these conditions has not been well characterized. In this study, we collected information on diabetic eye disease-related research grants from seven representative countries--the United States, China, Japan, the United Kingdom, Spain, Germany, and France--by searching for all global diabetic eye disease journal articles in the Web of Science and PubMed databases, all global registered clinical trials in the ClinicalTrials database, and new drugs approved by the United States, China, Japan, and EU agencies from 2012 to 2021. During this time period, diabetic retinopathy accounted for the vast majority (89.53%) of the 2288 government research grants that were funded to investigate diabetic eye disease, followed by diabetic macular edema (9.27%). The United States granted the most research funding for diabetic eye disease out of the seven countries assessed. The research objectives of grants focusing on diabetic retinopathy and diabetic macular edema differed by country. Additionally, the United States was dominant in terms of research output, publishing 17.53% of global papers about diabetic eye disease and receiving 22.58% of total citations. The United States and the United Kingdom led international collaborations in research into diabetic eye disease. Of the 415 clinical trials that we identified, diabetic macular edema was the major disease that was targeted for drug development (58.19%). Approximately half of the trials (49.13%) pertained to angiogenesis. However, few drugs were approved for ophthalmic (40 out of 1830; 2.19%) and diabetic eye disease (3 out of 1830; 0.02%) applications. Our findings show that basic and translational research related to diabetic eye disease in the past decade has not been highly active, and has yielded few new treatment methods and newly approved drugs.
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Affiliation(s)
- Yuan Yuan
- Aier School of Ophthalmology, Central South University, Changsha, Hunan Province, China
| | - Shangli Ji
- Changsha Aier Eye Hospital, Changsha, Hunan Province, China
- Aier Eye Institute, Changsha, Hunan Province, China
| | - Yali Song
- Department of Metabolic and Bariatric Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
| | - Zhaodi Che
- Department of Metabolic and Bariatric Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
| | - Lu Xiao
- Department of Metabolic and Bariatric Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
| | - Shibo Tang
- Changsha Aier Eye Hospital, Changsha, Hunan Province, China
- Aier Eye Institute, Changsha, Hunan Province, China
| | - Jia Xiao
- Changsha Aier Eye Hospital, Changsha, Hunan Province, China
- Aier Eye Institute, Changsha, Hunan Province, China
- Department of Metabolic and Bariatric Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
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Ji S, Peng Y, Liu J, Xu P, Tang S. Human adipose tissue-derived stem cell extracellular vesicles attenuate ocular hypertension-induced retinal ganglion cell damage by inhibiting microglia- TLR4/MAPK/NF-κB proinflammatory cascade signaling. Acta Neuropathol Commun 2024; 12:44. [PMID: 38504301 PMCID: PMC10953184 DOI: 10.1186/s40478-024-01753-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 03/07/2024] [Indexed: 03/21/2024] Open
Abstract
Microglia-mediated neuroinflammatory responses are recognized as a predominant factor during high intraocular pressure (IOP)-induced retinal and optic nerve injury along with potential therapeutic targets for the disease. Our previous research indicated that mesenchymal stem cell (MSC) treatment could reduce high IOP-induced neuroinflammatory responses through the TLR4 pathway in a rat model without apparent cell replacement and differentiation, suggesting that the anti-neuroinflammatory properties of MSCs are potentially mediated by paracrine signaling. This study aimed to evaluate the anti-neuroinflammatory effect of human adipose tissue-derived extracellular vesicles (ADSC-EVs) in microbead-induced ocular hypertension (OHT) animals and to explore the underlying mechanism since extracellular vesicles (EVs) are the primary transporters for cell secretory action. The anti-neuroinflammatory effect of ADSC-EVs on LPS-stimulated BV-2 cells in vitro and OHT-induced retinal and optic nerve injury in vivo was investigated. According to the in vitro research, ADSC-EV treatment reduced LPS-induced microglial activation and the TLR4/NF-κB proinflammatory cascade response axis in BV-2 cells, such as CD68, iNOS, TNF-α, IL-6, and IL-1β, TLR4, p-38 MAPK, NF-κB. According to the in vivo data, intravitreal injection of ADSC-EVs promoted RGC survival and function, reduced microglial activation, microglial-derived neuroinflammatory responses, and TLR4/MAPK/NF-κB proinflammatory cascade response axis in the OHT mice. Our findings provide preliminary evidence for the RGC protective and microglia-associated neuroinflammatory reduction effects of ADSC-EVs by inhibiting the TLR4/MAPK/NF-κB proinflammatory cascade response in OHT mice, indicating the therapeutic potential ADSC-EVs or adjunctive therapy for glaucoma.
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Affiliation(s)
- Shangli Ji
- Aier Eye Hospital, Jinan University, 510632, Guangzhou, Guangdong, China
- Guangzhou Aier Eye Hospital, 510010, Guangzhou, Guangdong, China
| | - Yanfang Peng
- Aier Eye Institute, 410015, Changsha, Hunan, China
| | - Jian Liu
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, 410011, Changsha, Hunan, China
| | - Pang Xu
- Aier Eye Hospital, Jinan University, 510632, Guangzhou, Guangdong, China
| | - Shibo Tang
- Aier Eye Hospital, Jinan University, 510632, Guangzhou, Guangdong, China.
- Guangzhou Aier Eye Hospital, 510010, Guangzhou, Guangdong, China.
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Mao S, Sun X, Duan C, Jiang B, Ma H, Ji S, Liang Y, Zhang R, Chen J, Tang S. Generation of a gene-corrected isogenic iPSC cell line from an X-linked retinoschisis patient with a hemizygous mutation c.304C > T (p.R102W) in RS1 gene. Stem Cell Res 2023; 73:103263. [PMID: 38011758 DOI: 10.1016/j.scr.2023.103263] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 11/06/2023] [Accepted: 11/21/2023] [Indexed: 11/29/2023] Open
Abstract
X-linked retinoschisis (XLRS) is one of the most common retinal genetic diseases with progressive visual impairment in childhood affecting males. It is manifested with macular and/or peripheral schisis in neural retinas with no effective treatment. Previously, we successfully generated a human-induced pluripotent stem cell (iPSC) line from an XLRS patient carrying the hemizygous RS1 c. 304C > T (p.R102W) mutation. Here, we corrected the c.304C > T mutation in the RS1 gene using CRISPR/Cas9 technology to generate an isogenic control. This cell line is valuable for the study of XLRS.
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Affiliation(s)
- Shengru Mao
- Aier Eye Institute, Changsha, Hunan, China; The Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Changsha Aier Eye Hospital, Changsha, Hunan, China
| | - Xihao Sun
- Aier Eye Institute, Changsha, Hunan, China; Changsha Aier Eye Hospital, Changsha, Hunan, China
| | - Chunwen Duan
- Aier Eye Institute, Changsha, Hunan, China; The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Bing Jiang
- The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Hongjie Ma
- Aier Eye Institute, Changsha, Hunan, China
| | - Shangli Ji
- Aier Eye Institute, Changsha, Hunan, China; The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | | | - Ruting Zhang
- Aier Eye Institute, Changsha, Hunan, China; The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jiansu Chen
- Aier Eye Institute, Changsha, Hunan, China; Changsha Aier Eye Hospital, Changsha, Hunan, China.
| | - Shibo Tang
- Aier Eye Institute, Changsha, Hunan, China; Changsha Aier Eye Hospital, Changsha, Hunan, China.
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Ye S, Wang Z, Ma JH, Ji S, Peng Y, Huang Y, Chen J, Tang S. Diabetes Reshapes the Circadian Transcriptome Profile in Murine Retina. Invest Ophthalmol Vis Sci 2023; 64:3. [PMID: 37788001 PMCID: PMC10552875 DOI: 10.1167/iovs.64.13.3] [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] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 09/09/2023] [Indexed: 10/04/2023] Open
Abstract
Purpose Diabetic retinopathy (DR) is a common complication of diabetes and has a high prevalence. Dysregulation of circadian rhythmicity is associated with the development of DR. This research aimed to investigate rhythmical transcriptome alterations in the retina of diabetic mice. Methods C57BL/6J mice were used to establish a diabetes model by intraperitoneal injection of streptozotocin (STZ). After 12 weeks, retinas were collected continuously at 4-hour intervals over 1 day. Total RNA was extracted from normal and STZ-treated retinas and RNA sequencing was performed. Meta2d algorithm, Kyoto Encyclopedia of Genes, Phase Set Enrichment Analysis, and time-series cluster analysis were used to identify, analyze and annotate the composition, phase, and molecular functions of rhythmic transcripts in retinas. Results The retina exhibited powerful transcriptome rhythmicity. STZ-induced diabetes markedly modified the transcriptome characteristics of the circadian transcriptome in the retina, including composition, phase, and amplitude. Moreover, the diabetic mice led to re-organized temporal and clustering enrichment pathways in space and time and affected core clock machinery. Conclusions Diabetes impairs the circadian rhythm of the transcriptomic profile of retinas. This study offers new perspectives on the negative effects of diabetes on the retina, which may provide important information for the development of new treatments for DR.
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Affiliation(s)
- Suna Ye
- AIER Eye Hospital, Jinan University, Guangzhou, China
- AIER Eye Institute, Changsha, China
| | | | | | | | | | | | - Jiansu Chen
- AIER Eye Hospital, Jinan University, Guangzhou, China
- AIER Eye Institute, Changsha, China
| | - Shibo Tang
- AIER Eye Hospital, Jinan University, Guangzhou, China
- AIER Eye Institute, Changsha, China
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Xue J, Shi R, Ma J, Liu Z, Feng G, Chen QQ, Li Y, He Y, Ji S, Shi J, Zhu X, Zhou J. Concurrent Chemoradiotherapy plus Programmed Death-1 (PD-1) Blockade for Locally Advanced Cervical Cancer: Preliminary Results of a Single-Arm, Open-Label, Phase II Trial. Int J Radiat Oncol Biol Phys 2023; 117:e542-e543. [PMID: 37785675 DOI: 10.1016/j.ijrobp.2023.06.1838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) This study aims to assess the anti-tumor activity and safety of concurrent chemoradiotherapy plus PD-1 blockade in patients with locally advanced cervical cancer. MATERIALS/METHODS This is a single-arm, open-label, prospective phase II study. The key inclusion criteria were treatment-naive patients aged 18-75 years with stage II A2-IVA (FIGO 2018) locally advanced cervical cancer. All patients were treated with concurrent chemoradiotherapy including 2 cycle cisplatin (75mg/m2, for three days, every 3 weeks[Q3W]), nedaplatin or carboplatin can be selected for patients who can't tolerate cisplatin. After CCRT, patients achieving complete response (CR), partial responses(PR), stable disease(SD) received adjuvant chemotherapy (docetaxel 75 mg/m2 day 1+ cisplatin DDP 25 mg/m2 day 1-3, Q3W) for 2 cycle. PD-1 blockade Sintilimab and Tislelizumab was administered intravenously at 200 mg every 3 weeks up to 1 year or until disease progression, unacceptable toxicity, or withdrawal of consent. The primary endpoint was objective response rate (ORR) assessed by investigators per Response Evaluation Criteria In Solid Tumours (RECIST) version 1.1. Secondary endpoints were the 12, 24-month overall survival (OS) rates, the 12, 24-month disease free survival (DFS) rates and safety. RESULTS From February 2020 to June 2022, a total of 15 patients was enrolled. Median age was 57 years (range, 36-74 years). Stage IIA1 was documented in 2 patients, stage IIA2 in two patients, stage IIIA in one patient, stage IIIC1 in eight patients, and stage IVA in two patients. And 66.7% (10/15) of patients had Metastatic lymph node. Four patients received adjuvant chemotherapy. The ORR was 100%, with 4 patients achieving CR and 11 PR. The 12 and 24-month OS rates are 93.3% and 84%, the 12 and 24-month DFS rates are 86% and 75.4%, respectively. Treatment-related adverse events (TRAEs) occurred in 86.7% (13/15) of patients. Grade 3 TRAEs are leukocyte (n = 1), thrombocytopenia (n = 1), hepatitis (n = 1), skin reaction (n = 1). No treatment-related deaths occurred. And IFN-γ was significantly elevated after radiotherapy (p = 0.0073). CONCLUSION Concurrent chemoradiotherapy plus PD-1 blockade showed promising antitumor activity and manageable toxicities in patients with locally advanced cervical cancer. Long-term outcomes are still pending to further evaluate their therapeutic effects. (ChiCTR2000032856).
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Affiliation(s)
- J Xue
- Department of Radiation Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, 215001, China., Suzhou, China
| | - R Shi
- Department of Radiation Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, 215001, China., Suzhou, China
| | - J Ma
- The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Z Liu
- Department of Radiation Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, 215001, China., Suzhou, China
| | - G Feng
- Department of Gynecology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, 215001, China., Suzhou, China
| | - Q Q Chen
- Department of Radiation Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Y Li
- Department of Radiation Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, 215001, China., Suzhou, China
| | - Y He
- Department of Radiation Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, 215001, China., Suzhou, China
| | - S Ji
- Department of Radiation Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - J Shi
- Department of Radiation Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, 215001, China., Suzhou, China
| | - X Zhu
- Department of Radiation Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, 215001, China., Suzhou, China
| | - J Zhou
- Department of Radiotherapy Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
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Wang T, Li J, Ji S. A Bidirectional Mendelian Randomization Analysis of Circulating Inflammatory Cytokines with Colon and Rectum Cancers. Int J Radiat Oncol Biol Phys 2023; 117:e239. [PMID: 37784945 DOI: 10.1016/j.ijrobp.2023.06.1164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Chronic inflammation has been proposed to be associated with tumor development and progression. Dynamic changes in serum cytokines induced by feedback mechanisms from tumors make differentiation of cause and effect difficult. MATERIALS/METHODS In this study, a bidirectional summary-level Mendelian randomization (MR) analysis was performed to elucidate the causal correlation between inflammatory regulators with colon (CC) and rectum (RC) carcinomas. Summary-level data on inflammation-related genetic variations were extracted from a genome-wide association meta-analysis. Corresponding data for CC and RC were obtained from the FinnGen (CC: 1396 cases vs. 174,006 controls; RC: 1,078 cases vs. 174,006 controls) and UK Biobank (CC: 2,226 cases vs. 358,968 controls; RC: 1,170 cases vs. 360,024 controls) consortiums. Inverse-variance weighted MR was used as the primary method, and sensitivity analysis was performed to assess the MR assumptions. RESULTS After P value correction and meta-analysis, there was evidence of direct associations between macrophage migration inhibitory factor (MIF) and CC (95% confidence interval (CI):1.001-1.003; P = 8.77×10-4) and inverse correlations between Interleukin-17 (IL-17) and RC (95% CI: 0.997-0.999; P = 1.15×10-3). Conversely, interleukin-1 receptor antagonist (IL1ra) was downregulated in patients at a higher risk of RC (P = 0.006), and no reliable results revealed a causal association between other cytokines and CC and RC. CONCLUSION Thus, this MR study suggests that downregulated serum MIF and elevated serum IL-17 concentrations may reduce the risk of CC and RC, respectively. Therefore, MIF and IL-17 may serve as potential therapeutic targets, and further exploration of their underlying mechanisms is warranted.
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Affiliation(s)
- T Wang
- Department of Radiotherapy Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - J Li
- Department of Radiotherapy Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - S Ji
- Department of Radiation Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
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Wang T, Li J, Ji S. Prognostic Value of Naples Prognostic Score on Survival in Unresectable Small Cell Lung Cancer Patients Undergoing Chemoradiotherapy. Int J Radiat Oncol Biol Phys 2023; 117:e28. [PMID: 37785047 DOI: 10.1016/j.ijrobp.2023.06.710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Chemoradiotherapy is a major modality for treatment of small cell lung cancer (SCLC). Naples prognosis score (NPS) is a novel prognostic biomarker-based immune and nutritional status and that can be used to evaluate prognosis. Our study aimed to investigate the prognostic role of NPS in unresectable SCLC patients. MATERIALS/METHODS Patients treated with chemoradiotherapy were retrospectively analyzed between June 2012 and August 2017. We divided patients into three groups depending on the NPS: group 0, n = 31; group 1, n = 100; and group 2, n = 48, and associations between clinical characteristics and NPS group were analyzed. Spearman correlation analyses were used to estimate the correlations among NPS parameters. The univariable and multivariable Cox analyses were used to evaluate the prognostic value of clinicopathological characteristics and laboratory indicators for overall survival (OS) and progression-free survival (PFS). RESULTS Data from 179 patients were analyzed. Treatment modality (P < 0.001) and serum CEA (P = 0.03) were significantly different among the NPS groups. The age, sex, smoking status, KPS, Karnofsky performance score (KPS), disease extent, and number of metastatic sites were not correlated with NPS (all P > 0.05). Spearman correlation analyses showed that neutrophil-to-lymphocyte ratio (NLR) had a significant correlation with lymphocyte-to-monocyte ratio (LMR) (r = -0.495, P < 0.001). KPS, disease extent, prophylactic cranial irradiation, treatment response and NPS Group were associated with OS. In addition, KPS, disease extent, prophylactic cranial irradiation, treatment response and NPS Group were associated with PFS. Multivariate analysis results showed that NPS was identified as an independent prognostic factor for OS (Group 1: hazard ratio [HR] = 2.704, 95% confidence interval [CI] = 1.403-5.210; P = 0.003; Group 2: HR = 5.154, 95% CI = 2.614-10.166; P < 0.001) and PFS (Group 1: HR = 2.018, 95% CI = 1.014-4.014; P = 0.045; Group 2: HR = 3.339, 95% CI = 1.650-6.756; P = 0.001). CONCLUSION NPS is related to clinical outcomes in patients with unresectable SCLC. NPS as an innovative scoring system, can improves prediction of survival in unresectable SCLC patients.
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Affiliation(s)
- T Wang
- Department of Radiotherapy Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - J Li
- Department of Radiotherapy Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - S Ji
- Department of Radiation Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
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Huang Y, Wang Z, Ye B, Ma JH, Ji S, Sheng W, Ye S, Ou Y, Peng Y, Yang X, Chen J, Tang S. Sodium butyrate ameliorates diabetic retinopathy in mice via the regulation of gut microbiota and related short-chain fatty acids. J Transl Med 2023; 21:451. [PMID: 37420234 PMCID: PMC10329333 DOI: 10.1186/s12967-023-04259-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 06/09/2023] [Indexed: 07/09/2023] Open
Abstract
BACKGROUND Diabetic retinopathy (DR) development is associated with disturbances in the gut microbiota and related metabolites. Butyric acid is one of the short-chain fatty acids (SCFAs), which has been found to possess a potential antidiabetic effect. However, whether butyrate has a role in DR remains elusive. This study aimed to investigate the effect and mechanism of sodium butyrate supplementation on DR. METHODS C57BL/6J mice were divided into three groups: Control group, diabetic group, and diabetic with butyrate supplementation group. Type 1 diabetic mouse model was induced by streptozotocin. Sodium butyrate was administered by gavage to the experimental group daily for 12 weeks. Optic coherence tomography, hematoxylin-eosin, and immunostaining of whole-mount retina were used to value the changes in retinal structure. Electroretinography was performed to assess the retinal visual function. The tight junction proteins in intestinal tissue were evaluated using immunohistochemistry. 16S rRNA sequencing and LC-MS/MS were performed to determine the alteration and correlation of the gut microbiota and systemic SCFAs. RESULTS Butyrate decreased blood glucose, food, and water consumption. Meanwhile, it alleviated retinal thinning and activated microglial cells but improved electroretinography visual function. Additionally, butyrate effectively enhanced the expression of ZO-1 and Occludin proteins in the small intestine. Crucially, only butyric acid, 4-methylvaleric acid, and caproic acid were significantly decreased in the plasma of diabetic mice and improved after butyrate supplementation. The deeper correlation analysis revealed nine genera strongly positively or negatively correlated with the above three SCFAs. Of note, all three positively correlated genera, including norank_f_Muribaculaceae, Ileibacterium, and Dubosiella, were significantly decreased in the diabetic mice with or without butyrate treatment. Interestingly, among the six negatively correlated genera, Escherichia-Shigella and Enterococcus were increased, while Lactobacillus, Bifidobacterium, Lachnospiraceae_NK4A136_group, and unclassified_f_Lachnospiraceae were decreased after butyrate supplementation. CONCLUSION Together, these findings demonstrate the microbiota regulating and diabetic therapeutic effects of butyrate, which can be used as a potential food supplement alternative to DR medicine.
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Affiliation(s)
- Yinhua Huang
- Aier School of Ophthalmology, Central South University, Changsha, China
- Aier Eye Institute, Changsha, China
| | - Zhijie Wang
- State Key Laboratory of Ophthalmology, Optometry and Visual Science, Eye Hospital, Wenzhou Medical University, Wenzhou, China
- National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Bo Ye
- Department of Ophthalmology, Nanchang Aier Eye Hospital, Nanchang, China
| | | | | | - Wang Sheng
- Department of Ophthalmology, Changsha Xiangjiang Aier Eye Hospital, Changsha, China
| | - Suna Ye
- Aier Eye Institute, Changsha, China
| | - Yiwen Ou
- Aier School of Ophthalmology, Central South University, Changsha, China
- Aier Eye Institute, Changsha, China
| | | | - Xu Yang
- Aier Eye Institute, Changsha, China
| | - Jiansu Chen
- Aier School of Ophthalmology, Central South University, Changsha, China.
- Aier Eye Institute, Changsha, China.
- Key Laboratory for Regenerative Medicine, Ministry of Education, Jinan University, Guangzhou, China.
| | - Shibo Tang
- Aier School of Ophthalmology, Central South University, Changsha, China.
- Aier Eye Institute, Changsha, China.
- Changsha Aier Eye Hospital, Aier Eye Hospital Group, Hunan, China.
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Wang Z, Ji S, Ma JH, Chen J, Tang S. Chromatin Immunoprecipitation Assay in Mouse Retinal Tissue. Methods Mol Biol 2023; 2678:183-189. [PMID: 37326714 DOI: 10.1007/978-1-0716-3255-0_14] [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] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Chromatin immunoprecipitation (ChIP) is one of the most widely used methods for investigating interactions between proteins and DNA sequences. ChIP plays an important role in the transcriptional regulation study, which can locate the target genes of transcription factors and cofactors or monitor the sequence-specific genomic regions of histone modification. To analyze the interaction between transcription factors and several candidate genes, ChIP coupled with quantitative PCR (ChIP-PCR) assay is a basic tool. With the development of next-generation sequencing technology, ChIP-coupled sequencing (ChIP-seq) can provide the protein-DNA interaction information in a genome-wide dimension, which helps a lot in identifying new target genes. This chapter describes a protocol for performing ChIP-seq of transcription factors from retinal tissues.
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Affiliation(s)
- Zhijie Wang
- Aier Eye Institute, Changsha, Hunan Province, People's Republic of China
- School of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou, People's Republic of China
| | - Shangli Ji
- Aier Eye Institute, Changsha, Hunan Province, People's Republic of China
| | - Jacey Hongjie Ma
- Aier Eye Institute, Changsha, Hunan Province, People's Republic of China
| | - Jiansu Chen
- Aier Eye Institute, Changsha, Hunan Province, People's Republic of China
- Changsha Aier Eye Hospital, Changsha, Hunan Province, People's Republic of China
| | - Shibo Tang
- Aier Eye Institute, Changsha, Hunan Province, People's Republic of China.
- Changsha Aier Eye Hospital, Changsha, Hunan Province, People's Republic of China.
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Huang C, Mezger STP, Looi WD, Muralidharan S, Ji S, Pastor BC, Tan SH, Charles CJ, Kofidis T, Richard AM, Chan MY, Torta FT, Heeren RMA, Bonney GK, Wang JW. Spatial-temporal lipidomics profile of acute myocardial injury. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Lipidome disturbance has long been recognized to occur after myocardial infarction (MI). Accumulation of excessive fatty acids induces production of reactive oxygen species and consequently deteriorates cardiac injury in MI. However, the spatial and temporal lipid profile in the heart following ischemic injury remains unknown.
Purpose
We aim to uncover the temporal-spatial lipidome profile of the heart following ischemia reperfusion (I/R) injury and identify circulating lipids released from injured myocardium that are potentially useful for diagnosis of ischemic heart disease.
Methods
C57/BL6 mice were subjected to 30 min myocardial ischemia followed by removal of the ligature to establish reperfusion injury. Porcine I/R injury was induced by 105 min myocardial ischemia followed by reperfusion. Human plasma was obtained from 143 post-MI patients. Myocardial lipid profiles were generated by matrix-assisted laser desorption/ionization (MALDI) mass spectrometry imaging (MALDI-MSI) in different regions (infarct, remote and peri-infarct) at different time points. Moreover, the lipids in the heart and plasma were analysed by LC-MS/MS.
Results
We observed a drastic alteration in the lipidome with distinct spatial-temporal features in the injured heart by both MALDI-MSI and LC-MS/MS. In the infarct heart tissue, as revealed by LC-MS/MS, we observed an elevation of glycerolipids that peaked at 3 hours after I/R, and a sustained elevation of phospholipids and sphingolipids up to 3 days. Similar alternations in lipid profile was observed but much weaker in the remote and peri-infarct heart tissue compared to the infarct tissue. Among those lipids, PC 32:0 detected by MALDI-MSI highly overlapped CD68 staining at a single-cell level, showing a strong correlation of PC 32:0 with macrophage infiltration in mouse hearts (R2=0.93, p<0.0001). A similar increase of PC 32:0 in the infarct area was also observed in porcine hearts following I/R injury. Surprisingly, plasma levels of PC 32:0 in the mice decreased after I/R injury. In humans, plasma levels of PC 32:0 in post-MI patients were lower than that in healthy individuals (p=0.03). Further analysis demonstrated that plasma levels of PC 32:0 determined within 72 hours after percutaneous coronary intervention were negatively correlated with the 6-month post-MI cardiac ejection fraction in patients (R2=0.08, p<0.001).
Conclusions
A temporal-spatial lipidome profile was established in heart injury by synergizing LC-MS/MS and mass spectrometry imaging. PC 32:0 levels are positively correlated with myocardial macrophage infiltration but negatively correlated with cardiac function in cardiac I/R injury. Our findings indicate that PC 32:0 is a potential biomarker for cardiac injury and the inflammatory status in the injured heart.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Singapore Ministry of Health's National Medical Research Council
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Affiliation(s)
- C Huang
- National University of Singapore, Department of Surgery, Cardiovascular Research Institute, Yong Loo Lin School of Medicine , Singapore , Singapore
| | - S T P Mezger
- Maastricht University, Maastricht MultiModal Molecular Imaging (M4I) Institute, Division of Imaging Mass Spectrometry , Maastricht , The Netherlands
| | - W D Looi
- Bruker Singapore Pte. Ltd. , singapore , Singapore
| | - S Muralidharan
- National University of Singapore, Department of Biochemistry, Singapore Lipidomics Incubator (SLING), Yong Loo Lin School of Medicine , Singapore , Singapore
| | - S Ji
- National University of Singapore, Department of Biochemistry, Singapore Lipidomics Incubator (SLING), Yong Loo Lin School of Medicine , Singapore , Singapore
| | - B C Pastor
- Maastricht University, Maastricht MultiModal Molecular Imaging (M4I) Institute, Division of Imaging Mass Spectrometry , Maastricht , The Netherlands
| | - S H Tan
- National University of Singapore, Department of Medicine, Cardiovascular Research Institute, Yong Loo Lin School of Medicine , Singapore , Singapore
| | - C J Charles
- National University of Singapore, Department of Surgery, Cardiovascular Research Institute, Yong Loo Lin School of Medicine , Singapore , Singapore
| | - T Kofidis
- National University of Singapore, Department of Surgery, Yong Loo Lin School of Medicine , Singapore , Singapore
| | - A M Richard
- National University of Singapore, Department of Medicine, Cardiovascular Research Institute, Yong Loo Lin School of Medicine , Singapore , Singapore
| | - M Y Chan
- National University of Singapore, Department of Medicine, Cardiovascular Research Institute, Yong Loo Lin School of Medicine , Singapore , Singapore
| | - F T Torta
- National University of Singapore, Department of Biochemistry, Singapore Lipidomics Incubator (SLING), Yong Loo Lin School of Medicine , Singapore , Singapore
| | - R M A Heeren
- Maastricht University, Maastricht MultiModal Molecular Imaging (M4I) Institute, Division of Imaging Mass Spectrometry , Maastricht , The Netherlands
| | - G K Bonney
- National University Hospital, Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery , Singapore , Singapore
| | - J W Wang
- National University of Singapore, Department of Surgery, Cardiovascular Research Institute, Yong Loo Lin School of Medicine , Singapore , Singapore
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11
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Liang Y, Sun X, Duan C, Zhou Y, Cui Z, Ding C, Gu J, Mao S, Ji S, Chan HF, Tang S, Chen J. Generation of a gene-corrected human iPSC line (CSUASOi004-A-1) from a retinitis pigmentosa patient with heterozygous c.2699 G>A mutation in the PRPF6 gene. Stem Cell Res 2022; 64:102911. [PMID: 36103774 DOI: 10.1016/j.scr.2022.102911] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/01/2022] [Accepted: 09/02/2022] [Indexed: 11/15/2022] Open
Abstract
Retinitis pigmentosa (RP) is one of the most common inherited retinal diseases characterized by nyctalopia, progressive vision loss and visual field contraction. we previously generated an induced pluripotent stem cell line (CSUASOi004-A) from a RP patient with heterozygous PRPF6 c.2699 G>A (p.R900H) mutation. Here we corrected the PRPF6 c.2699 G>A mutation genetically using CRISPR/Cas9 technology to generate an isogenic control (CSUASOi004-A-1), which can provide a valuable resource in the research of the disease.
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Affiliation(s)
- Yuqin Liang
- Aier School of Ophthalmology, Central South University, P.R.C., 18th Floor, the New Century Building, #198 Furong Middle Road, Changsha, Hunan 410015, China; Aier Eye Institute, 18th Floor, The New Century Building, #198 Furong Middle Road, Changsha, Hunan 410015, China
| | - Xihao Sun
- Aier School of Ophthalmology, Central South University, P.R.C., 18th Floor, the New Century Building, #198 Furong Middle Road, Changsha, Hunan 410015, China; Aier Eye Institute, 18th Floor, The New Century Building, #198 Furong Middle Road, Changsha, Hunan 410015, China
| | - Chunwen Duan
- Aier School of Ophthalmology, Central South University, P.R.C., 18th Floor, the New Century Building, #198 Furong Middle Road, Changsha, Hunan 410015, China; Aier Eye Institute, 18th Floor, The New Century Building, #198 Furong Middle Road, Changsha, Hunan 410015, China
| | - Yalan Zhou
- Aier School of Ophthalmology, Central South University, P.R.C., 18th Floor, the New Century Building, #198 Furong Middle Road, Changsha, Hunan 410015, China; Aier Eye Institute, 18th Floor, The New Century Building, #198 Furong Middle Road, Changsha, Hunan 410015, China
| | - Zekai Cui
- Aier Eye Institute, 18th Floor, The New Century Building, #198 Furong Middle Road, Changsha, Hunan 410015, China
| | - Chengcheng Ding
- Aier Eye Institute, 18th Floor, The New Century Building, #198 Furong Middle Road, Changsha, Hunan 410015, China
| | - Jianing Gu
- Aier Eye Institute, 18th Floor, The New Century Building, #198 Furong Middle Road, Changsha, Hunan 410015, China
| | - Shengru Mao
- Aier Eye Institute, 18th Floor, The New Century Building, #198 Furong Middle Road, Changsha, Hunan 410015, China
| | - Shangli Ji
- Aier Eye Institute, 18th Floor, The New Century Building, #198 Furong Middle Road, Changsha, Hunan 410015, China
| | - Hon Fai Chan
- Institute for Tissue Engineering and Regenerative Medicine, The Chinese University of Hong Kong, 999077, Hong Kong, China; School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, 999077, Hong Kong, China
| | - Shibo Tang
- Aier School of Ophthalmology, Central South University, P.R.C., 18th Floor, the New Century Building, #198 Furong Middle Road, Changsha, Hunan 410015, China; Aier Eye Institute, 18th Floor, The New Century Building, #198 Furong Middle Road, Changsha, Hunan 410015, China; CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China.
| | - Jiansu Chen
- Aier School of Ophthalmology, Central South University, P.R.C., 18th Floor, the New Century Building, #198 Furong Middle Road, Changsha, Hunan 410015, China; Aier Eye Institute, 18th Floor, The New Century Building, #198 Furong Middle Road, Changsha, Hunan 410015, China; Key Laboratory of Regenerative Medicine, Ministry of Education, Jinan University, Guangzhou 510632, China.
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12
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Geng CY, Feng X, Luan JM, Ji S, Jin YH, Zhang M. Improved tenderness of beef from bulls supplemented with active dry yeast is related to matrix metalloproteinases and reduced oxidative stress. Animal 2022; 16:100517. [PMID: 35436649 DOI: 10.1016/j.animal.2022.100517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 03/11/2022] [Accepted: 03/14/2022] [Indexed: 11/29/2022] Open
Abstract
Supplementing diets with active dry yeast (ADY, Saccharomyces cerevisiae) improves the carcass quality grade of beef cattle and the tenderness of beef. The relevant mechanisms have not been fully elucidated, but may be related to the effect of ADY on oxidative stress and the activity of matrix metalloproteinases (MMPs). To provide further insight into these mechanisms, this study evaluated the influence of ADY supplementation on growth performance, carcass traits, meat quality, concentrations of MMPs in serum (MMP-2, MMP-9 and MMP-13), oxidative stress indices and antioxidant capacity indices in beef cattle. Forty-six crossbred Simmental × Yanbian bulls (∼18 months of age, BW 436 ± 35 kg) participated in a 145-day finishing trial. ADY supplementation significantly improved marbling deposition, intramuscular fat content, and beef tenderness (P < 0.05); altered individual fatty acid proportions in the beef and increased saturated fatty acids while decreasing polyunsaturated fatty acids (P < 0.05); significantly decreased the abundance of reactive oxygen species in serum and meat; significantly increased the level of superoxide dismutase in meat (P < 0.05); tended to increase the level of catalase (P = 0.075) in serum and glutathione reductase (P = 0.066) in meat; and increased the secretion of MMPs. The improvement of beef tenderness following ADY supplementation of finishing bulls is related to the effects of ADY on the secretion of MMPs and the lowering of oxidative stress.
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Affiliation(s)
- C Y Geng
- College of Agriculture, Yanbian University, Yanji 133000, China; Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133000, China.
| | - X Feng
- College of Agriculture, Yanbian University, Yanji 133000, China
| | - J M Luan
- College of Agriculture, Yanbian University, Yanji 133000, China
| | - S Ji
- College of Agriculture, Yanbian University, Yanji 133000, China; Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133000, China
| | - Y H Jin
- College of Agriculture, Yanbian University, Yanji 133000, China; Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133000, China
| | - M Zhang
- College of Agriculture, Yanbian University, Yanji 133000, China; Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133000, China
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13
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Lv D, Chen D, Wang Z, Cui Z, Ma JH, Ji S, Chen J, Tang S. COL10A1 is a novel factor in the development of choroidal neovascularization. Microvasc Res 2022; 139:104239. [PMID: 34520774 DOI: 10.1016/j.mvr.2021.104239] [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] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 08/16/2021] [Accepted: 08/31/2021] [Indexed: 11/29/2022]
Abstract
With the dramatic rise in the aging population, researching age-related macular degeneration (AMD), especially the severe form neovascular AMD (nAMD), has become more important than ever. In this study, we found that collagen type X was increased in retina-choroid tissue of mice with laser-induced choroidal neovascularization (CNV) based on immunohistofluorescence. RNA sequencing and bioinformatic analyses were performed to compare the retina-choroid tissue complex of the CNV mouse model to normal controls. Collagen type X alpha 1 chain (Col10a1) was among the most significantly upregulated genes, and the results were validated with an animal model at the mRNA and protein levels by quantitative real-time polymerase chain reaction (qPCR) and western blotting, respectively. COL10A1 was also upregulated in human retinal microvascular endothelial cells (HRMECs), human umbilical vein endothelial cells (HUVECs), RPE19 cells and RF/6A cells under hypoxic conditions. Next, in vitro and in vivo experiments were performed to study the effect of COL10A1 on neovascularization. siRNA knockdown of COL10A1 suppressed the proliferation and tube formation ability of HRMECs under hypoxic conditions. Snail family transcriptional repressor 1 (SNAIL1) and angiopoietin-2 (ANGPT2) were downregulated in COL10A1 knockdown HRMECs under hypoxic conditions and thus were potential downstream genes. Significant decreases in CNV leakage and CNV lesion area, as assessed by fundus fluorescein angiography (FFA) and immunofluorescence of choroidal flat mounts, respectively, were observed in a mouse model intravitreally injected with anti-collagen X monoclonal antibody (mAb) compared to the controls. In conclusion, COL10A1 promotes CNV formation and may represent a new candidate target for the treatment and diagnosis of nAMD and other neovascular diseases.
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Affiliation(s)
- Da Lv
- Aier School of Ophthalmology, Central South University, Changsha, China; Aier Eye Institute, Changsha, China
| | | | - Zhijie Wang
- Aier School of Ophthalmology, Central South University, Changsha, China; Aier Eye Institute, Changsha, China
| | | | - Jacey Hongjie Ma
- Aier School of Ophthalmology, Central South University, Changsha, China; Aier Eye Institute, Changsha, China
| | | | - Jiansu Chen
- Aier School of Ophthalmology, Central South University, Changsha, China; Aier Eye Institute, Changsha, China; Key Laboratory for Regenerative Medicine, Ministry of Education, Jinan University, Guangzhou, China; Institute of Ophthalmology, Medical College, Jinan University, Guangzhou, China.
| | - Shibo Tang
- Aier School of Ophthalmology, Central South University, Changsha, China; Aier Eye Institute, Changsha, China; CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China.
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14
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Wang Z, Huang Y, Chu F, Ji S, Liao K, Cui Z, Chen J, Tang S. Clock Gene Nr1d1 Alleviates Retinal Inflammation Through Repression of Hmga2 in Microglia. J Inflamm Res 2021; 14:5901-5918. [PMID: 34795498 PMCID: PMC8594447 DOI: 10.2147/jir.s326091] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 10/30/2021] [Indexed: 12/13/2022] Open
Abstract
Purpose Retinal inflammation is involved in the pathogenesis of several retinal diseases. As one of the core clock genes, Nr1d1 has been reported to suppress inflammation in many diseases. We investigated whether pharmacological activation of Nr1d1 can inhibit retinal inflammation and delineated the mechanisms of Nr1d1 in alleviating microglia activation. Methods Lipopolysaccharide (LPS) induced mice models were used to examine the effects of SR9009 (agonist of NR1D1) treatment on inflammatory phenotypes in vivo. Anti-inflammatory effects of Nr1d1 and associated mechanisms were investigated in the BV2 microglia cell line, and in primary retinal microglia in vitro. Results SR9009 treatment alleviated LPS-induced inflammatory cell infiltration, elevated cytokine levels and morphological changes of the microglia in mice models. In LPS-stimulated BV2 cells and primary retinal microglia, SR9009 suppressed cytokine expressions by inhibiting the NF-κB signaling pathway. Moreover, SR9009 treatment increased the levels of the M2 phenotype marker (CD206) and the proportions of ramified microglia. Suppression of Nr1d1 with siRNA reversed the inhibitory effects of SR9009 on cytokine production in BV2 cells. RNA-seq analysis showed that genes that were upregulated following Nr1d1 knockdown were enriched in inflammatory-associated biological processes. Subsequently, ChIP-seq of NR1D1 in BV2 was performed, and the results were integrated with RNA-seq results using the Binding and Expression Target Analysis (BETA) tool. Luciferase assays, electrophoretic mobility shift assay (EMSA), qPCR and Western blotting assays revealed that NR1D1 binds the promoter of Hmga2 to suppress its transcription. Notably, overexpressed Hmga2 in activated microglia could partly abolish the anti-inflammatory effects of Nr1d1. Conclusion The clock gene Nr1d1 protects against retinal inflammation and microglia activation in part by suppressing Hmga2 transcription.
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Affiliation(s)
- Zhijie Wang
- Aier School of Ophthalmology, Central South University, Changsha, People's Republic of China.,Aier Eye Institute, Aier Eye Hospital Group, Changsha, People's Republic of China
| | - Yinhua Huang
- Aier School of Ophthalmology, Central South University, Changsha, People's Republic of China.,Aier Eye Institute, Aier Eye Hospital Group, Changsha, People's Republic of China
| | - Feixue Chu
- Department of Ophthalmology, Hangzhou Xihu Zhijiang Eye Hospital, Hangzhou, People's Republic of China
| | - Shangli Ji
- Aier Eye Institute, Aier Eye Hospital Group, Changsha, People's Republic of China
| | - Kai Liao
- Aier School of Ophthalmology, Central South University, Changsha, People's Republic of China.,Aier Eye Institute, Aier Eye Hospital Group, Changsha, People's Republic of China
| | - Zekai Cui
- Aier Eye Institute, Aier Eye Hospital Group, Changsha, People's Republic of China
| | - Jiansu Chen
- Aier School of Ophthalmology, Central South University, Changsha, People's Republic of China.,Aier Eye Institute, Aier Eye Hospital Group, Changsha, People's Republic of China.,Key Laboratory for Regenerative Medicine, Jinan University, Guangzhou, People's Republic of China.,Institute of Ophthalmology, Jinan University, Guangzhou, People's Republic of China
| | - Shibo Tang
- Aier School of Ophthalmology, Central South University, Changsha, People's Republic of China.,Aier Eye Institute, Aier Eye Hospital Group, Changsha, People's Republic of China.,CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, People's Republic of China
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15
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Yepes I, Ji S. The impact of hospital teaching status in atrial fibrillation hospital admission outcomes: a national inpatient analysis in the united states. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.3155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Teaching hospitals are are usually larger and have a higher level of complexity. Admissions for atrial fibrillation are commonly encountered by residents and fellows and they carry a hight cost, morbidity and mortality.
Purpose
Our aim is to do a retrospective analysis of the National Impatient Sample (NIS) from 2016 to 2018 and determine the impact of the hospital teaching status and rural Vs urban location in the atrial fibrillation admission outcomes.
Methods
We combined the NIS from 2016–2018. A primary diagnosis of atrial fibrillation was identified identified. We stratified the admissions based on the hospital teaching status. We defined as primary outcomes the length of stay (LOS), in hospital mortality and total charges/cost per admission. The secondary outcomes were the rates acute kidney injury (AKI), acute blood loss anemia (ABLA) and embolic stroke (ES). We used the Charlson comorbidity index. We used univariate and multivariate linear regressions for the continuous outcomes and logistic regressions for the binary outcomes.
Results
We identified 981,739 admissions with a primary diagnosis of atrial fibrillation; 513,914 (47%) were female patients, the average age was 70.5 years. In the teaching hospitals, the LOS was 0.3 days longer [95% CI: 0.22–0.37]; p=0.000 and the total hospital charges were higher (8406.32 dollar more per admission [95% CI: 6510.89–10301.76]; p=0.000); there was no difference in mortality compared to the non-teaching institutions (OR 1.03 [95% CI: 0.87–1.21]; p=0.628). In teaching hospitals, the rates of AKI, ABLA and ES were higher (OR 1.2, 95% CI [1.12–1.27]; p=0.000), (OR 1.29, 95% CI [1.09–1.53]; p=0.003) and (OR 1.72, 95% CI [1.11–2.66]; p=0.014)respectively. In a subgroup analysis comparing urban teaching hospitals Vs urban non-teaching Vs rural non-teaching hospitals, we found that the primary outcomes were similar than the above but the results in the secondary outcomes were driven mainly by a marked difference between rural and urban institutions regardless of teaching status, which makes us think that there might be under diagnosis of atrial fibrillation related complications in lower complexity rural hospitals. The difference in costs per admission was not as high when comparing urban teaching with non-teaching hospitals (5103.96 dollar higher, 95% [CI: 3008.70–7199.23]; p=0.000).
Conclusion
Amongst admissions for atrial fibrillation, the total cost per admission was higher in teaching hospitals which was concordant with a longer LOS. Although our results show higher rates of AKI, ABLA and ES in teaching hospitals, this might be caused by underdiagnosis of such conditions in non-teaching rural institutions compared to large teaching hospital systems and these were not associated with an increase rate of mortality. There is need for more research to determine the factors impacting the higher costs of atrial fibrillation admissions amongst teaching institutions.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- I Yepes
- Advocate Illinois Masonic Medical Center, Cardiovascular Disease, Chicago, United States of America
| | - S Ji
- Memorial Healthcare System, Internal Medicine, Pembroke Pines, United States of America
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16
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Ji S, Yepes I. A United States national analysis of basic demographics and commodities in sudden cardiac arrest. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.3168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Cardiac arrest is a condition associated with high mortality rate and can cause significant social-economical burden in United States. Our study aim is to analyze the basic demographic of patients admitted for cardiac arrest and the incidence of complications following cardiac arrest.
Methods
Using the National Inpatient Sample from 2016–2018, we identified all the hospital admissions with a primary diagnosis code at discharge for cardiac arrest during the study period. We identified the basic characteristics including age, gender, race and admitting hospital status. The set primary outcome was inpatient mortality, length of stay (LOS) and total costs of admission. The secondary outcomes were the incidence of acute kidney injury, acute blood loss anemia, acute embolism and thrombosis of deep veins of lower extremity (DVT), pulmonary embolism, non-traumatic intracranial hemorrhage, and thromboembolic stroke. Multivariable logistic regression model analysis was performed to address potential confounders. The Charlson Comorbidity Index (CCI) was used to adjust for the severity of each patient's co-morbidities.
Results
A total of 44,655 patients was admitted for cardiac arrest during the study period. Mean age was 64 years; 56% were men; 63% were white, 20.7% were black, 9.2% were latino, 2.8% were Asian or pacific Islander. The total in-hospital mortality was 73.5%. The average length of stay was 4.2 days and the average total costs of admission was 83,516 dollars. Among the seven demographic characteristics: age, gender, race, hospital size, hospital region, hospital teaching status, insurance type; only hospital teaching status and hospital size were found to significantly impact the mortality. Acute kidney injury was the most common complication in post-cardiac arrest patient (42%), followed by acute blood loss anemia (3.6%), pulmonary embolism (2.3%) and DVT (2.1%). Thromboembolic stroke (0.2%) and non-traumatic intracranial hemorrhage (0.1%) are less common. During subgroup analysis, acute kidney injury was also found out to be a predictive factor of increased mortality (OR 1.64, p<0.001).
Conclusion
Cardiac arrest remains one of the conditions with highest mortality rate. In our study, age, gender or race dit not impact on the outcome of cardiac arrest. Among all the complications from cardiac arrest, acute kidney injury was the most common one and was associated with higher mortality rate.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- S Ji
- Memorial Healthcare System, Internal Medicine - Graduate Medical Education, Pembroke Pines, United States of America
| | - I Yepes
- Memorial Healthcare System, Internal Medicine - Graduate Medical Education, Pembroke Pines, United States of America
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17
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Hu L, Zhang DW, Jiang HY, Ji S, Wei YY, Hu HQ, Fei GH. [Correlation between systemic inflammation level and emphysema degree and bone mineral density in chronic obstructive pulmonary disease patients and its mechanism]. Zhonghua Jie He He Hu Xi Za Zhi 2021; 44:213-217. [PMID: 33721934 DOI: 10.3760/cma.j.cn112147-20200721-00824] [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 study the correlation between systemic inflammation level and emphysema degree and bone mineral density in chronic obstructive pulmonary disease (COPD) patients and its possible mechanism. Methods: 90 patients with stable COPD who met the inclusion criteria and 50 controls in the physical examination center during the same period were recruited. All the enrolled objects have collected general clinical data, analyzed peripheral blood samples, measuring the Low-attenuation area of lung and CT value of lumbar 1 vertebra (L1-CT) by chest spiral CT. According to LAA%, COPD patients were divided into 36 cases of the non-emphysema group, 32cases of mild to moderate emphysema group, and 22 cases of severe emphysema group. The correlation between L1-CT value, LAA%, peripheral blood inflammatory factors, and pulmonary function indices in each group was analyzed and compared. Results: The HU value of L1-CT (107±32) in the COPD group was significantly lower than that in the control group (153±30), and the difference was statistically significant (P<0.05). The higher the LAA% in COPD patients was, the lower the value of L1-CT was, and the difference between groups was statistically significant. Compared with COPD patients in the non-emphysema group, peripheral blood neutrophil/lymphocyte ratio (NLR), platelet/lymphocyte ratio (PLR), and C-reactive protein (CRP) were all increased in the emphysema group, and the differences were statistically significant (P<0.05). L1-CT was negatively correlated with LAA, PLR, NLR, and CRP while uncorrelated with serum concentration of calcium and phosphorus. Conclusion: The decrease in bone density in COPD patients is closely related to the degree of emphysema. It is associated with increased levels of systemic inflammation caused by COPD itself. Early and timely broad-spectrum anti-inflammatory treatment may have certain clinical significance for the prevention and treatment of comorbidity with osteoporosis.
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Affiliation(s)
- L Hu
- Department of Respiratory and Critical Care Medicine, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - D W Zhang
- Department of Respiratory and Critical Care Medicine, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - H Y Jiang
- Department of Health Care Medicine, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - S Ji
- Key Laboratory of Respiratory Diseases Research and Medical Transformation of Anhui Province, Hefei 230022, China
| | - Y Y Wei
- Department of Respiratory and Critical Care Medicine, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - H Q Hu
- Department of Respiratory and Critical Care Medicine, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - G H Fei
- Key Laboratory of Respiratory Diseases Research and Medical Transformation of Anhui Province, Hefei 230022, China
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18
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Wang Z, Ji S, Huang Y, Liao K, Cui Z, Chu F, Chen J, Tang S. The daily gene transcription cycle in mouse retina. Exp Eye Res 2021; 207:108565. [PMID: 33838143 DOI: 10.1016/j.exer.2021.108565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 03/23/2021] [Accepted: 03/30/2021] [Indexed: 12/13/2022]
Abstract
Many physiological retinal processes, such as outer segment disk shedding and visual sensitivity, exhibit a daily rhythm. However, the detailed transcriptome dynamics and related biological processes of the retina are not fully understood. Retinal tissues were collected from C57BL/6J male mice housed in a 12h light/12h dark (LD) cycle for 4 weeks, at Zeitgeber time (ZT) 0, 4, 8, 12, 16, and 20. Total RNA was extracted from the tissues and used for unique identifier RNA sequencing experiments. The rhythmicity of gene expression was determined using the MetaCycle R package. We found that 1741 genes (10.26%) were rhythmically expressed in the retina. According to the expression patterns, the rhythmically expressed genes were assigned to four clusters, each with about 361-492 genes, using the Mfuzz R package. The Kyoto Encyclopedia of Genes and Genomes (KEGG) and Gene Ontology (GO) analyses were conducted to identify pathways and biological processes of the profiled genes. Genes in Clusters 1 and 4 were associated with glycolysis and energy production, showed higher activity at night (from ZT16 to ZT20), and were enriched in the Hif-1α signaling pathway and low-oxygen-related terms. Genes in Cluster 2 were predominantly involved in cilium assembly and organization and were relatively upregulated during the day. Genes in Cluster 3 were associated with ribosome biosynthesis and were highly expressed during the day-night transition period. Taken together, these results demonstrate that a large proportion of retinal genes are expressed rhythmically. Genes involved in energy production and glycolysis are highly expressed at night, leading to relative hypoxia and activation of the Hif-1α signaling pathway. Genes associated with the formation of photoreceptor cilia are expressed during the day.
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Affiliation(s)
- Zhijie Wang
- Aier School of Ophthalmology, Central South University, Changsha, China; Aier Eye Institute, Changsha, China
| | | | - Yinhua Huang
- Aier School of Ophthalmology, Central South University, Changsha, China; Aier Eye Institute, Changsha, China
| | - Kai Liao
- Aier School of Ophthalmology, Central South University, Changsha, China; Aier Eye Institute, Changsha, China
| | | | - Feixue Chu
- Hangzhou Xihu Zhijiang Eye Hospital, China
| | - Jiansu Chen
- Aier School of Ophthalmology, Central South University, Changsha, China; Aier Eye Institute, Changsha, China; Key Laboratory for Regenerative Medicine, Ministry of Education, Jinan University, Guangzhou, China; Institute of Ophthalmology, Medical College, Jinan University, Guangzhou, China.
| | - Shibo Tang
- Aier School of Ophthalmology, Central South University, Changsha, China; Aier Eye Institute, Changsha, China; CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China.
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Huang Y, Wang Z, Ma H, Ji S, Chen Z, Cui Z, Chen J, Tang S. Dysbiosis and Implication of the Gut Microbiota in Diabetic Retinopathy. Front Cell Infect Microbiol 2021; 11:646348. [PMID: 33816351 PMCID: PMC8017229 DOI: 10.3389/fcimb.2021.646348] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 03/02/2021] [Indexed: 12/16/2022] Open
Abstract
The pathogenesis of type 2 diabetes mellitus (T2DM) is commonly associated with altered gut bacteria. However, whether the microbial dysbiosis that exists in human diabetic patients with or without retinopathy is different remains largely unknown. Here, we collected clinical information and fecal samples from 75 participants, including 25 diabetic patients without retinopathy (DM), 25 diabetic patients with retinopathy (DR), and 25 healthy controls (HC). The gut microbial composition in the three groups was analyzed using 16S ribosomal RNA (rRNA) gene sequencing. Microbial structure and composition differed in the three groups. The α and β diversities in both the DM and DR groups were reduced compared with those in the HC group. Blautia was the most abundant genus, especially in the DM group. In addition, increased levels of Bifidobacterium and Lactobacillus and decreased levels of Escherichia-Shigella, Faecalibacterium, Eubacterium_hallii_group and Clostridium genera were observed in the DM and DR groups compared with the HC group. Furthermore, a biomarker set of 25 bacterial families, which could distinguish patients in the DR group from those in the DM and HC groups was identified, with the area under the curve values ranging from 0.69 to 0.85. Of note, Pasteurellaceae, which was increased in DM and decreased in DR compared with HC, generated a high AUC (0.74) as an individual predictive biomarker. Moreover, 14 family biomarkers were associated with fasting blood glucose levels or diabetes, with most of them being negatively correlated. In summary, our study establishes compositional alterations of gut microbiota in DM and DR, suggesting the potential use of gut microbiota as a non-invasive biomarker for clinical and differential diagnosis, as well as identifying potential therapeutic targets of diabetic retinopathy.
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Affiliation(s)
- Yinhua Huang
- Aier School of Ophthalmology, Central South University, Changsha, China.,Aier Eye Institute, Changsha, China
| | - Zhijie Wang
- Aier School of Ophthalmology, Central South University, Changsha, China.,Aier Eye Institute, Changsha, China
| | | | | | | | | | - Jiansu Chen
- Aier School of Ophthalmology, Central South University, Changsha, China.,Aier Eye Institute, Changsha, China.,Key Laboratory for Regenerative Medicine, Ministry of Education, Jinan University, Guangzhou, China.,Institute of Ophthalmology, Medical College, Jinan University, Guangzhou, China
| | - Shibo Tang
- Aier School of Ophthalmology, Central South University, Changsha, China.,Aier Eye Institute, Changsha, China.,CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China
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Ji S, Li J, Chang L, Zhao C, Jia R, Tan Z, Liu R, Zhang Y, Li Y, Yin G, Guan Y, Xia X, Yi X, Xu J. Peripheral blood T-cell receptor repertoire as a predictor of clinical outcomes in gastrointestinal cancer patients treated with PD-1 inhibitor. Clin Transl Oncol 2021; 23:1646-1656. [PMID: 33583004 DOI: 10.1007/s12094-021-02562-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 11/16/2020] [Accepted: 01/28/2021] [Indexed: 12/20/2022]
Abstract
BACKGROUND Identifying valid biomarkers for patient selection impressively promotes the success of anti-PD-1 therapy. However, the unmet need for biomarkers in gastrointestinal (GI) cancers remains significant. We aimed to explore the predictive value of the circulating T-cell receptor (TCR) repertoire for clinical outcomes in GI cancers who received anti-PD-1 therapy. METHODS 137 pre- and 79 post-treated peripheral blood samples were included. The TCR repertoire was evaluated by sequencing of complementarity-determining region 3 (CDR3) in the TRB gene. The Shannon index was used to measure the diversity of the TCR repertoire, and Morisita's overlap index was used to determine TCR repertoire similarities between pre- and post-treated samples. RESULTS Among all enrolled patients, 76 received anti-PD-1 monotherapy and 61 received anti-PD-1 combination therapy. In the anti-PD-1 monotherapy cohort, patients with higher baseline TCR diversity exhibited a significantly higher disease control rate (77.8% vs. 47.2%; hazard ratio [HR] 3.92; 95% confidence interval [CI] 1.14-13.48; P = 0.030) and a longer progression-free survival (PFS) (median: 6.47 months vs. 2.77 months; HR 2.10; 95% CI 1.16-3.79; P = 0.014) and overall survival (OS) (median: NA vs. 8.97 months; HR 3.53; 95% CI 1.49-8.38; P = 0.004) than those with lower diversity. Moreover, patients with a higher TCR repertoire similarity still showed a superior PFS (4.43 months vs. 1.84 months; HR 13.98; 95% CI 4.37-44.68; P < 0.001) and OS (13.40 months vs. 6.12 months; HR 2.93; 95% CI 1.22-7.03; P = 0.016) even in the cohort with lower baseline diversity. However, neither biomarker showed predictive value in the anti-PD-1 combination therapy cohort. Interestingly, the combination of TCR diversity and PD-L1 expression can facilitate patient stratification in a pooled cohort. CONCLUSION The circulating TCR repertoire can serve as a predictor of clinical outcomes in anti-PD-1 therapy in GI cancers.
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Affiliation(s)
- S Ji
- Academy of Military Medical Sciences, Academy of Military Sciences, Beijing, China.,Department of Gastrointestinal Oncology, The Fifth Medical Centre, Chinese PLA General Hospital, No. 8 East Street, Fengtai District, Beijing, 100071, China
| | - J Li
- Geneplus-Beijing Institute, Beijing, China
| | - L Chang
- Geneplus-Beijing Institute, Beijing, China
| | - C Zhao
- Department of Gastrointestinal Oncology, The Fifth Medical Centre, Chinese PLA General Hospital, No. 8 East Street, Fengtai District, Beijing, 100071, China
| | - R Jia
- Department of Gastrointestinal Oncology, The Fifth Medical Centre, Chinese PLA General Hospital, No. 8 East Street, Fengtai District, Beijing, 100071, China
| | - Z Tan
- Department of Gastrointestinal Oncology, The Fifth Medical Centre, Chinese PLA General Hospital, No. 8 East Street, Fengtai District, Beijing, 100071, China
| | - R Liu
- Department of Gastrointestinal Oncology, The Fifth Medical Centre, Chinese PLA General Hospital, No. 8 East Street, Fengtai District, Beijing, 100071, China
| | - Y Zhang
- Department of Gastrointestinal Oncology, The Fifth Medical Centre, Chinese PLA General Hospital, No. 8 East Street, Fengtai District, Beijing, 100071, China
| | - Y Li
- Department of Gastrointestinal Oncology, The Fifth Medical Centre, Chinese PLA General Hospital, No. 8 East Street, Fengtai District, Beijing, 100071, China
| | - G Yin
- Geneplus-Beijing Institute, Beijing, China
| | - Y Guan
- Geneplus-Beijing Institute, Beijing, China
| | - X Xia
- Geneplus-Beijing Institute, Beijing, China
| | - X Yi
- Geneplus-Beijing Institute, Beijing, China
| | - J Xu
- Department of Gastrointestinal Oncology, The Fifth Medical Centre, Chinese PLA General Hospital, No. 8 East Street, Fengtai District, Beijing, 100071, China.
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Bai Q, Ji S, Fei GH. [Influenza virus activates toll-like receptor 7/nuclear factor-κB signaling pathway to regulate airway inflammatory response in patients with acute exacerbation of chronic obstructive pulmonary diseases]. Zhonghua Nei Ke Za Zhi 2020; 59:540-545. [PMID: 32594688 DOI: 10.3760/cma.j.cn112138-20190804-00542] [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 explore how influenza A virus (IAV) regulates airway inflammation via activating Toll-like receptor 7(TLR7)/nuclear factor of κB (NF-κB) signaling pathway in patients with acute exacerbation of chronic obstructive pulmonary disease (COPD). Methods: Primary bronchial epithelial cells were isolated and cultured from normal controls and COPD patients. Samples were divided into 6 groups according to different in vitro treatment, including normal epithelial cell group (A), normal cells+IAV group (B), COPD epithelial cell group (C), COPD cells+IAV group (D), normal cells+TLR7 small interference RNA (si-RNA) group (E), COPD cells+TLR7 siRNA group (F). Protein expressions of TLR7 and NF-κB were detected by Western blot after 24h co-culture with IAV and TLR7 siRNA. Interleukin-6 (IL-6) and tumor necrosis factor α (TNF α) were detected by enzyme-linked immunosorbent assay (ELISA). Results: (1) Compared with group A [0.350±0.075 and 0.470±0.034, (53.000±6.532)pg/ml and (17.000±1.625)pg/ml],TLR7, NF-κB protein expression and IL-6, TNF α levels were significantly increased in group B[0.950±0.075 and 1.090±0.078,(185.000±7.874)pg/ml and (32.000±0.838)pg/ml], group C[0.780±0.056 and 0.910±0.045,(138.000±5.100)pg/ml and 29.000±1.323)pg/ml) and group D[1.280±0.031 and 1.540±0.051,(432.000±5.734)pg/ml and (52.000±3.453)pg/ml] (all P<0.01). Compared with group C TLR7, NF-κB protein expression and IL-6, TNF α levels were significantly increased in group D (P<0.01). (2) Compared with the group A[0.530±0.023 and 0.800±0.046,(51.000±0.327)pg/ml and (14.000±0.314)pg/ml], TLR7, NF-κB protein expression and IL-6, TNF α levels were significantly decreased in the group E[0.350±0.047 and 0.510±0.067,(26.000±1.081)pg/ml and(8.000±0.526)pg/ml] (P<0.05). Compared with group C[1.080±0.078 and 1.280±0.034,(125.000±2.249)pg/ml and (28.000±1.010)pg/ml], TLR7, NF-κB protein expression and IL-6, TNF α levels decreased in the group F[0.880±0.056 and 1.040±0.029,(83.000±1.125)pg/ml and (21.000±0.429)pg/ml] (P<0.05). Conclusion: Influenza viruses activate TLR7/NF-κB signaling pathway to regulate airway inflammation storms in patients with acute exacerbation of COPD. New therapeutic targets of acute exacerbation COPD may be studied based on these inflammation responses to influenza viruses.
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Affiliation(s)
- Q Bai
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - S Ji
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - G H Fei
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
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Ji S, Chen Q, Shi R, Liu Z, Zhou J. Prognostic Significance of Negative Conversion of High-risk Human Papillomavirus DNA after Treatment in Cervical Cancer Patients. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2565] [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: 11/25/2022]
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23
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Ji S, Chen Q, Guo X. Preliminary Study of SII-N Scoring Model In Predicting The Prognosis Of Esophageal Cancer In Elderly Patients. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1850] [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: 11/16/2022]
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Zhou J, Li X, Shang Z, Gao A, Ji S, He C. DNA Polymerase Iota (Pol ι) Promotes Radioresistance of Esophageal Squamous Cell Carcinoma through Blocking Ubiquitin-mediated RAD51 Degradation and Homologous Recombinational Repair after Radiation-induced DNA Damage. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2145] [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: 10/23/2022]
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Lv YQ, Ji S, Chen X, Xu D, Luo XT, Cheng MM, Zhang YY, Qu XL, Jin Y. Effects of crocin on frozen-thawed sperm apoptosis, protamine expression and membrane lipid oxidation in Yanbian yellow cattle. Reprod Domest Anim 2020; 55:1011-1020. [PMID: 32533872 DOI: 10.1111/rda.13744] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 05/05/2020] [Accepted: 06/01/2020] [Indexed: 12/01/2022]
Abstract
Glycerol is used as a bovine semen osmotic cryoprotectant that greatly improves the quality of frozen and thawed bovine sperm. However, high glycerol concentrations can have a toxic effect on frozen and thawed bovine sperm. Therefore, this experiment investigated the effect of replacing a portion of the glycerol in a cryoprotectant solution with crocin on the sperm apoptosis, protamine deficiency and membrane lipid oxidation of frozen and thawed Yanbian yellow cattle sperm. The experiment included a control group (6% glycerol) and four treatment groups: I (3% glycerol), II (3% glycerol +0.5 mM crocin), III (3% glycerol + 1 mM crocin) and IV (3% glycerol + 2 mM crocin). Computer assisted semen analysis was used to detect sperm motility, Hoechst 33,342, propidium iodide, and JC-1 staining were used to analyse sperm viability and mitochondrial membrane potential, chromomycin A3 staining was used to detect protamine deficiency and DNA damage, flow cytometry was used for sperm membrane lipid disorder detection and analysis, and real-time quantitative RT-qPCR was used to detect the mRNA expression levels of protamine-related genes (PRM2, PRM3), sperm acrosome-associated genes (SPACA3), oxidative stress-related genes (ROMO1) and apoptosis-related genes (BCL2, BAX). Compared to the control group, replacing a portion of glycerol with 1 mM crocin significantly improved sperm motility, plasma membrane integrity, membrane lipid disorders (p < .05) and viability, mitochondrial membrane potential, protamine deficiency (p < .01). The expression level of PRM2, PRM3, SPACA3 and BCL2 significantly increased (p < .05), while the expression levels of ROMO1 and BAX significantly decreased (p < .05). Accordingly, the BCL2/BAX ratio significantly increased (p < .05). In summary, the substitution of a portion of glycerol with crocin in cryoprotective solution improved the quality of Yanbian yellow cattle sperm after freezing and thawing.
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Affiliation(s)
- Y Q Lv
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, China
| | - S Ji
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, China
| | - X Chen
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, China
| | - D Xu
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, China
| | - X T Luo
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, China
| | - M M Cheng
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, China
| | - Y Y Zhang
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, China
| | - X L Qu
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, China
| | - Y Jin
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, China
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Ji S, Xu X, Yu X. Laparoscopic spleen-preserving total pancreatectomy for intraductal papillary mucinous neoplasm (with ). J Visc Surg 2020; 157:441-442. [PMID: 32631556 DOI: 10.1016/j.jviscsurg.2020.06.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- S Ji
- Department of pancreatic surgery, Fudan university, Shanghai cancer center, 200032 Shanghai, China; Department of oncology, Shanghai medical college, Fudan university, 200032 Shanghai, China; Shanghai pancreatic cancer institute, 200032 Shanghai, China; Pancreatic cancer institute, Fudan university, 200032 Shanghai, China
| | - X Xu
- Department of pancreatic surgery, Fudan university, Shanghai cancer center, 200032 Shanghai, China; Department of oncology, Shanghai medical college, Fudan university, 200032 Shanghai, China; Shanghai pancreatic cancer institute, 200032 Shanghai, China; Pancreatic cancer institute, Fudan university, 200032 Shanghai, China
| | - X Yu
- Department of pancreatic surgery, Fudan university, Shanghai cancer center, 200032 Shanghai, China; Department of oncology, Shanghai medical college, Fudan university, 200032 Shanghai, China; Shanghai pancreatic cancer institute, 200032 Shanghai, China; Pancreatic cancer institute, Fudan university, 200032 Shanghai, China.
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Abstract
Periodontitis is a chronic inflammation of the periodontium caused by the loss of homeostasis between subgingival biofilms and susceptible hosts. Bacterial invasion into the gingival tissue and persistent infection are major events that lead to chronic inflammation. The intratissue bacterial communities are as complex as the subgingival biofilms and can also form biofilm-like structures, which will serve as a reservoir for local and systemic infections. The epithelium forms physical, chemical, and immunological barriers against invading microbes. Nevertheless, many bacterial species can invade the gingival epithelium through transcellular and paracellular pathways. In addition, both genetic and environmental factors of the hosts can affect epithelial barrier functions and thus bacterial invasion of the gingiva. In this review, current evidence for the bacterial invasion of the gingival tissue in periodontitis has been summarized, and the microbial and host factors that determine bacterial invasion of the gingiva have been reviewed.
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Affiliation(s)
- S Ji
- Department of Periodontology, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Y Choi
- Department of Immunology and Molecular Microbiology, BK21 CLS, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
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Li L, Ji S, Shrestha C, Jiang Y, Liao L, Xu F, Liu Z, Bikle DD, Xie Z. p120-catenin suppresses proliferation and tumor growth of oral squamous cell carcinoma via inhibiting nuclear phospholipase C-γ1 signaling. J Cell Physiol 2020; 235:9399-9413. [PMID: 32356317 DOI: 10.1002/jcp.29744] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 04/12/2020] [Accepted: 04/18/2020] [Indexed: 12/16/2022]
Abstract
p120-catenin (p120) serves as a stabilizer of the calcium-dependent cadherin-catenin complex and loss of p120 expression has been observed in several types of human cancers. The p120-dependent E-cadherin-β-catenin complex has been shown to mediate calcium-induced keratinocyte differentiation via inducing activation of plasma membrane phospholipase C-γ1 (PLC-γ1). On the other hand, PLC-γ1 has been shown to interact with phosphatidylinositol 3-kinase enhancer in the nucleus and plays a critical role in epidermal growth factor-induced proliferation of oral squamous cell carcinoma (OSCC) cells. To determine whether p120 suppresses OSCC proliferation and tumor growth via inhibiting PLC-γ1, we examined effects of p120 knockdown or p120 and PLC-γ1 double knockdown on proliferation of cultured OSCC cells and tumor growth in xenograft OSCC in mice. The results showed that knockdown of p120 reduced levels of PLC-γ1 in the plasma membrane and increased levels of PLC-γ1 and its signaling in the nucleus in OSCC cells and OSCC cell proliferation as well as xenograft OSCC tumor growth. However, double knockdown of p120 and PLC-γ1 or knockdown of PLC-γ1 alone did not have any effect. Immunohistochemical analysis of OSCC tissue from patients showed a lower expression level of p120 and a higher expression level of PLC-γ1 compared with that of adjacent noncancerous tissue. These data indicate that p120 suppresses OSCC cell proliferation and tumor growth by inhibiting signaling mediated by nuclear PLC-γ1.
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Affiliation(s)
- Lusha Li
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Institute of Metabolism and Endocrinology, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Shangli Ji
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Institute of Metabolism and Endocrinology, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Chandrama Shrestha
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Institute of Metabolism and Endocrinology, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Yi Jiang
- Department of Pathology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Liyan Liao
- Department of Pathology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Feng Xu
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Institute of Metabolism and Endocrinology, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Zhenming Liu
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Institute of Metabolism and Endocrinology, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Daniel D Bikle
- Endocrine Unit, Veterans Affairs Medical Center, University of California San Francisco, San Francisco, California
| | - Zhongjian Xie
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Institute of Metabolism and Endocrinology, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
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Liu K, Ji S, Xu Y, Diao Q, Shao C, Luo J, Zhu Y, Jiang Z, Diao Y, Cong Z, Hu L, Qiang Y, Shen Y. Safety, feasibility, and effect of an enhanced nutritional support pathway including extended preoperative and home enteral nutrition in patients undergoing enhanced recovery after esophagectomy: a pilot randomized clinical trial. Dis Esophagus 2020; 33:5479246. [PMID: 31329828 DOI: 10.1093/dote/doz030] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 03/08/2019] [Accepted: 03/13/2019] [Indexed: 12/11/2022]
Abstract
The aims of this pilot study are to evaluate the feasibility, safety, and effectiveness of conducting an enhanced nutritional support pathway including extended preoperative nutritional support and one month home enteral nutrition (HEN) for patients who underwent enhanced recovery after esophagectomy. We implemented extended preoperative nutritional support and one month HEN after discharge for patients randomized into an enhanced nutrition group and implemented standard nutritional support for patients randomized into a conventional nutrition group. Except the nutritional support program, both group patients underwent the same standardized enhanced recovery after surgery programs of esophagectomy based on published guidelines. Patients were assessed at preoperative day, postoperative day 7 (POD7), and POD30 for perioperative outcomes and nutritional status. To facilitate the determination of an effect size for subsequent appropriately powered randomized clinical trials and assess the effectiveness, the primary outcome we chose was the weight change before and after esophagectomy. Other outcomes including body mass index (BMI), lean body mass (LBM), appendicular skeletal muscle mass index (ASMI), nutrition-related complications, and quality of life (QoL) were also analyzed. The intention-to-treat analysis of the 50 randomized patients showed that there was no significant difference in baseline characteristics. The weight (-2.03 ± 2.28 kg vs. -4.05 ± 3.13 kg, P = 0.012), BMI (-0.73 ± 0.79 kg/m2 vs. -1.48 ± 1.11 kg/m2, P = 0.008), and ASMI (-1.10 ± 0.37 kg/m2 vs. -1.60 ± 0.66 kg/m2, P = 0.010) loss of patients in the enhanced nutrition group were obviously decreased compared to the conventional nutrition group at POD30. In particular, LBM (48.90 ± 9.69 kg vs. 41.96 ± 9.37 kg, p = 0.031) and ASMI (7.56 ± 1.07 kg/m2 vs. 6.50 ± 0.97 kg/m2, P = 0.003) in the enhanced nutrition group were significantly higher compared to the conventional nutrition group at POD30, despite no significant change between pre- and postoperation. In addition, European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 scores revealed that enhanced nutritional support improved the QoL of patients in physical function (75.13 ± 9.72 vs. 68.33 ± 7.68, P = 0.009) and fatigue symptom (42.27 ± 9.93 vs. 49.07 ± 11.33, P = 0.028) compared to conventional nutritional support. This pilot study demonstrated that an enhanced nutritional support pathway including extended preoperative nutritional support and HEN was feasible, safe, and might be beneficial to patients who underwent enhanced recovery after esophagectomy. An appropriately powered trial is warranted to confirm the efficacy of this approach.
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Affiliation(s)
- K Liu
- Department of Cardiothoracic Surgery, Jinling Hospital, Medical School of Nanjing University
| | - S Ji
- Department of Cardiothoracic Surgery, Jinling Hospital, Bengbu Medical College, Anhui, China
| | - Y Xu
- Department of Cardiothoracic Surgery, Jinling Hospital
| | - Q Diao
- Department of Medical Imaging, Medical Imaging Center, Jinling Hospital
| | - C Shao
- Department of Cardiothoracic Surgery, Jingling Hospital, Jingling School of Clinical Medicine, Nanjing Medical University
| | - J Luo
- Department of Cardiothoracic Surgery, Jinling Hospital, Medical School of Nanjing University.,Department of Cardiothoracic Surgery, Jinling Hospital
| | - Y Zhu
- Jiangsu Key laboratory for Molecular Medicine, Medical school of Nanjing University
| | - Z Jiang
- Department of Cardiothoracic Surgery, Jinling Hospital, Bengbu Medical College, Anhui, China
| | - Y Diao
- Medical School, Southeast University, Nanjing
| | - Z Cong
- Department of Cardiothoracic Surgery, Jinling Hospital, Medical School of Nanjing University.,Department of Cardiothoracic Surgery, Jinling Hospital
| | - L Hu
- Department of Cardiothoracic Surgery, Jinling Hospital
| | - Y Qiang
- Department of Cardiothoracic Surgery, Jinling Hospital, Medical School of Nanjing University.,Department of Cardiothoracic Surgery, Jinling Hospital.,Medical School, Southeast University, Nanjing
| | - Y Shen
- Department of Cardiothoracic Surgery, Jinling Hospital, Medical School of Nanjing University.,Department of Cardiothoracic Surgery, Jinling Hospital
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Ji S, Yoo T, Jin S, Ju H, Eom S, Kim JS, Hyun T. Changes in the phenolic compounds profile, antioxidant and anti-melanogenic activity from organs of Petasites japonicas under different extraction methods. Rev Mex Ing Quim 2020. [DOI: 10.24275/rmiq/bio1186] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Duan HJ, Cao JF, Chen YS, Wang JS, Ji S, Ma HR. A phosphorus/boron-containing triazine-trione derivative endowing epoxy resin with excellent flame retardance. EXPRESS POLYM LETT 2020. [DOI: 10.3144/expresspolymlett.2020.75] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Wong SK, Che CT, Guo HZ, Ji S, Kim JH, Leung KSY, Lo CK, Richards A, Schaneberg BT, Sudberg; S, Sullivan D, Wang W, Wong YC, Zhang LX, Zheng FY. Determination of Aconitum Alkaloids in Dietary Supplements and Raw Botanical Materials by Liquid Chromatography/UV Detection with Confirmation by Liquid Chromatography/Tandem Mass Spectrometry: Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/92.1.111] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
An interlaboratory study was conducted to evaluate a method for the determination of 3 Aconitum alkaloids, viz., aconitine, mesaconitine, and hypaconitine, in raw botanical material and dietary supplements. The alkaloids were extracted with diethyl ether in the presence of ammonia. After cleanup by solid-phase extraction to remove matrix interferences, the alkaloids were determined by reversed-phase liquid chromatography (LC)/UV detection at 235 nm with confirmation by LC/tandem mass spectrometry (MS/MS). A total of 14 blind duplicates were successfully analyzed by 12 collaborators. For repeatability, the relative standard deviation (RSDr) values ranged from 1.9 to 16.7, and for reproducibility, the RSDR values ranged from 6.5 to 33. The HorRat values were all <2 with only one exception at 2.3. All collaborating laboratories had calibration curves with correlation coefficients of >0.998. In addition, 6 collaborators performed the confirmation and were able to verify the identities of the alkaloids by using LC/MS/MS.
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Affiliation(s)
- Siu-Kay Wong
- Hong Kong Government Laboratory, 88 Chung Hau St, Homantin, Hong Kong SAR, China
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Hermann R, Farr B, Ji S, Schlieve T. A Novel Approach to Nerve Preservation during Segmental Resection of Mandible Utilizing Virtual Surgical Planning (VSP): A Case Series. J Oral Maxillofac Surg 2019. [DOI: 10.1016/j.joms.2019.06.069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Liu K, Luo J, Shao C, Ji S, Xu Y, Hu L, Qiang Y, Shen Y. PT03.04: An Enhanced Nutritional Support Pathway Including Extended Preoperative and Home Enteral Nutrition is Safe, Feasible and May Benefit Patients Undergoing Enhanced Recovery After Esophagectomy: A Pilot Randomized Clinical Trial. Clin Nutr 2019. [DOI: 10.1016/s0261-5614(19)32556-7] [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: 11/26/2022]
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Min YN, Liu FX, Qi X, Ji S, Cui L, Wang ZP, Gao YP. Effects of organic zinc on tibia quality, mineral deposit, and metallothionein expression level of aged hens. Poult Sci 2019; 98:366-372. [PMID: 30184139 PMCID: PMC6347128 DOI: 10.3382/ps/pey386] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 08/27/2018] [Indexed: 11/23/2022] Open
Abstract
The study aimed to determine the effects of methionine hydroxy analog chelate zinc on the tibia quality, mineral deposit, apparent retention of nutrients, and liver metallothionein (MT) expression level of aged laying hens. A total of 960 layers (Hy-Line Grey, 57 wk old) were randomly assigned into 4 groups, and each group had 8 replicates of 30 hens. During the first 2 wk, groups were fed a basal diet without extra zinc (Zn: 35.08 mg/kg). During the ensuing 14 wk, 4 levels of Zn (inorganic Zn: 80 mg/kg; organic Zn: 20, 40, 80 mg/kg) were added to the diet. The results indicated that both the Zn source and level did influence tibia strength and calcium (Ca) and Zn concentrations of tibia (P < 0.05), whereas there were no differences in the copper (Cu) and phosphorus (P) concentrations of the tibia and the tibia length (P > 0.05). Moreover, dietary supplementation with 40 or 80 mg/kg of organic Zn showed higher Zn and Ca concentrations in the tibia and higher tibia strength. The Cu concentration in the liver showed no difference among the 4 treatments, whereas the Zn concentration in the liver increased with the increasing Zn level. The apparent retention of P, iron (Fe), and manganese (Mn) was not affected by the Zn level or source (P > 0.05). However, the organic Zn group increased the apparent retention of Cu, Zn, Ca, crude protein (CP), and energy, and the group supplemented with 40 or 80 mg/kg of organic Zn obtained significant effects (P < 0.05). Moreover, dietary supplementation with 40 or 80 mg/kg organic Zn increased the MT mRNA expression of the liver at week 72, whereas 20 mg/kg of organic Zn decreased it (P < 0.05). In conclusion, this study suggested that an optimum dietary (40 mg/kg) organic Zn level plays a key role in promoting the apparent retention of minerals and nutrients, trace element deposit, and MT mRNA expression.
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Affiliation(s)
- Y N Min
- College of Animal Science and Technology, Northwest A& F University, Yangling, Shaanxi 712100, China
| | - F X Liu
- College of Animal Science and Technology, Northwest A& F University, Yangling, Shaanxi 712100, China
| | - X Qi
- College of Animal Science and Technology, Northwest A& F University, Yangling, Shaanxi 712100, China
| | - S Ji
- College of Animal Science and Technology, Northwest A& F University, Yangling, Shaanxi 712100, China
| | - L Cui
- College of Animal Science and Technology, Northwest A& F University, Yangling, Shaanxi 712100, China
| | - Z P Wang
- College of Animal Science and Technology, Northwest A& F University, Yangling, Shaanxi 712100, China
| | - Y P Gao
- College of Animal Science and Technology, Northwest A& F University, Yangling, Shaanxi 712100, China
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Kim M, Jeong J, Song J, Lee H, Lee S, Baek Y, Ji S. PSX-32 The rumen microbiome of Hanwoo steers from the growing to fattening stages. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- M Kim
- National Institute of Animal Science,Wanju, Republic of Korea
| | - J Jeong
- National Institute of Animal Science,Wanju, Republic of Korea
| | - J Song
- National Institute of Animal Science,Wanju, Cholla-bukto,South Korea
| | - H Lee
- Seoul National University,Seoul-t’ukpyolsi,South Korea
| | - S Lee
- National Institute of Animal Science,Wanju, Cholla-bukto,South Korea
| | - Y Baek
- National Institute of Animal Science, Cholla-bukto,South Korea
| | - S Ji
- National Institute of Animal Science,Wanju, Cholla-bukto,South Korea
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Ji S, Yan H, Gozho G, Li S, Wang Y. 236 Influence of gut microbiota on appetite in postpartum cows. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- S Ji
- China Agricultural University,Beijing, China
| | - H Yan
- China Agricultural University,Beijing, China
| | - G Gozho
- Department of Animal Science, University of Manitoba, Winnipeg, MB, Canda
| | - S Li
- China Agricultural University,Beijing, China
| | - Y Wang
- Department of Animal Science, University of Manitoba,Winnipeg, Manitoba, Canada R3T 2N2 / College of Animal Science and Technology, China Agricultural University,Beijing, China
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Zhu J, Chen Q, Hu Q, Gu K, Ji S. Concurrent Weekly Cisplatin Versus Triweekly Cisplatin Alone with Radiation Therapy in the Treatment of Local Advanced Cervical Cancer: A Meta-Analysis Result. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1711] [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: 11/17/2022]
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Ji S, Tian Y, Xin D, Tian D, Hao W. Enhanced TrkA Neurotrophin Receptor Expression Ameliorated Irradiation-Induced Memory Decline. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.632] [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: 11/30/2022]
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40
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Min Y, Liu F, Qi X, Ji S, Ma S, Liu X, Wang Z, Gao Y. Effects of methionine hydroxyl analog chelated zinc on laying performance, eggshell quality, eggshell mineral deposition, and activities of Zn-containing enzymes in aged laying hens. Poult Sci 2018; 97:3587-3593. [DOI: 10.3382/ps/pey203] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 04/27/2018] [Indexed: 11/20/2022] Open
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Ran J, Ji S, Morelli JN, Wu G, Li X. T2 mapping in dermatomyositis/polymyositis and correlation with clinical parameters. Clin Radiol 2018; 73:1057.e13-1057.e18. [PMID: 30172348 DOI: 10.1016/j.crad.2018.07.106] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 07/24/2018] [Indexed: 12/24/2022]
Abstract
AIM To explore the T2-mapping signal characteristics of the thigh muscles in patients with dermatomyositis/polymyositis (DM/PM) and to investigate the correlation between thigh muscle T2 values, clinical parameters, and serum creatinine kinase (CK). MATERIALS AND METHODS Forty-two patients with DM/PM proven by diagnostic criteria were enrolled in the study along with 13 healthy control subjects. Both T2-mapping and conventional magnetic resonance imaging (MRI) images were obtained in the thigh musculature of all subjects. The T2 values of thigh muscles were compared between the DM/PM patients and control groups. Thirty-one DM/PM patients were evaluated with manual muscle testing (MMT) and serum CK levels. A Spearman correlation coefficient model was used to correlate the mean T2 values and clinical assessments. The Kruskal-Wallis test and receiver operating characteristic (ROC) curves were also utilised. p-Values <0.05 reflected statistical significance. RESULTS The T2 value of all oedematous muscles was greater on average than that of the unaffected muscles of the DM/PM patients (p<0.05) and the muscles of healthy volunteers (p<0.05). The T2 value of unaffected muscles in DM/PM patients was also greater than that of the normal muscles in healthy volunteers (p<0.05). The area under the curves (AUCs) for T2 relaxation time values was 0.72 with respective sensitivity and specificity of 72.6% and 65.4%. The mean T2 relaxation time of the 31 patients group and the MMTs (p<0.05) was correlated without serum CK levels (p>0.05). CONCLUSION T2 mapping is not only quantitatively used for subclinical muscle involvement in DM/PM, but also be used to demonstrate severity of damaged muscles in DM/PM.
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Affiliation(s)
- J Ran
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - S Ji
- Department of Neurology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - J N Morelli
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - G Wu
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - X Li
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China.
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Lei H, Li Y, Xiao S, Lin C, Norris SL, Wei D, Hu Z, Ji S. Routes of transmission of influenza A H1N1, SARS CoV, and norovirus in air cabin: Comparative analyses. Indoor Air 2018; 28:394-403. [PMID: 29244221 PMCID: PMC7165818 DOI: 10.1111/ina.12445] [Citation(s) in RCA: 96] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Accepted: 12/06/2017] [Indexed: 05/05/2023]
Abstract
Identifying the exact transmission route(s) of infectious diseases in indoor environments is a crucial step in developing effective intervention strategies. In this study, we proposed a comparative analysis approach and built a model to simulate outbreaks of 3 different in-flight infections in a similar cabin environment, that is, influenza A H1N1, severe acute respiratory syndrome (SARS) coronavirus (CoV), and norovirus. The simulation results seemed to suggest that the close contact route was probably the most significant route (contributes 70%, 95% confidence interval [CI]: 67%-72%) in the in-flight transmission of influenza A H1N1 transmission; as a result, passengers within 2 rows of the index case had a significantly higher infection risk than others in the outbreak (relative risk [RR]: 13.4, 95% CI: 1.5-121.2, P = .019). For SARS CoV, the airborne, close contact, and fomite routes contributed 21% (95% CI: 19%-23%), 29% (95% CI: 27%-31%), and 50% (95% CI: 48%-53%), respectively. For norovirus, the simulation results suggested that the fomite route played the dominant role (contributes 85%, 95% CI: 83%-87%) in most cases; as a result, passengers in aisle seats had a significantly higher infection risk than others (RR: 9.5, 95% CI: 1.2-77.4, P = .022). This work highlighted a method for using observed outbreak data to analyze the roles of different infection transmission routes.
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Affiliation(s)
- H. Lei
- Department of Mechanical EngineeringThe University of Hong KongPokfulamHong KongChina
| | - Y. Li
- Department of Mechanical EngineeringThe University of Hong KongPokfulamHong KongChina
| | - S. Xiao
- Department of Mechanical EngineeringThe University of Hong KongPokfulamHong KongChina
| | - C.‐H. Lin
- Environmental Control SystemsBoeing Commercial AirplanesEverettWAUSA
| | - S. L. Norris
- Environmental Control SystemsBoeing Commercial AirplanesEverettWAUSA
| | - D. Wei
- Boeing (China) Co. Ltd.BeijingChina
| | - Z. Hu
- Beijing Aeronautical Science & Technology Research Institute of COMACBeijingChina
| | - S. Ji
- Beijing Aeronautical Science & Technology Research Institute of COMACBeijingChina
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Ji S, Lin S, Chen J, Huang X, Wei CC, Li Z, Tang S. Neuroprotection of Transplanting Human Umbilical Cord Mesenchymal Stem Cells in a Microbead Induced Ocular Hypertension Rat Model. Curr Eye Res 2018; 43:810-820. [PMID: 29505314 DOI: 10.1080/02713683.2018.1440604] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
PURPOSE The purpose of this study is to investigate the potential therapeutic benefits of intravitreally transplanted human umbilical cord mesenchymal stem cells (UC-MSCs) in an animal model of microbead-injection-induced ocular hypertension (OHT). METHODS UC-MSCs were isolated from human umbilical cords and then cultured. The OHT model was induced via intracameral injection of polystyrene microbeads in Sprague-Dawley adult rat eyes. Fifty-four healthy adult rats were randomly divided into three groups: normal control, OHT model treated with intravitreal transplantation of UC-MSCs, or phosphate-buffered saline (PBS). Two days after OHT was induced, either 5 µl 105 UC-MSCs suspension or PBS was injected into the vitreous cavity of rats. UC-MSCs localization and integration were examined via immunohistochemistry. Neuroprotection was quantified by counting retinal ganglion cells (RGCs) and axons 2 weeks following transplantation. The expression levels of glial-derived neurotrophic factor (GDNF), brain-derived neurotrophic factor (BDNF), and glial fibrillary acidic protein (GFAP) were assessed via immunohistochemistry and Western blot. Functional recovery was assessed 2 weeks after transplantation via scotopic threshold response (STR) electroretinography. RESULTS Elevated IOP levels were sustained at least 3 weeks after intracameral microbead injection and the number of β-III-tubulin+ RGCs significantly declined compared to PBS-injected eyes. UC-MSCs survived for at least 2 weeks after intravitreal transplantation and predominantly located in the vitreous cavity. A fraction of cells migrated into the ganglion cell layer of host retina, but without differentiation. Intravitreal UC-MSC transplantation resulted in increased number of RGCs, axons, and increased expression of GDNF and BDNF but decreased expression of GFAP. Intravitreal delivery of UC-MSCs significantly improved the recovery of the positive STR. CONCLUSIONS Intravitreal transplantation of UC-MSCs revealed the neuroprotection in the microbead-injection induced OHT. The effects could be related to the secretion of tropic factors (BDNF and GDNF) and the modulation of glial cell activation.
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Affiliation(s)
- Shangli Ji
- a Aier School of Ophthalmology , Central South University , Changsha , Hunan , China
| | - Saiyue Lin
- b Department of Anatomy and Neurobiology, Xiangya School of Medicine , Central South University , Changsha , Hunan , China
| | - Jiansu Chen
- a Aier School of Ophthalmology , Central South University , Changsha , Hunan , China
| | - Xinping Huang
- c Department of Biology , ShenzhenHornetcorn Biotechnology Co., Ltd , Shenzhen , Guangdong , China
| | - Chih-Chang Wei
- c Department of Biology , ShenzhenHornetcorn Biotechnology Co., Ltd , Shenzhen , Guangdong , China
| | - Zhiyuan Li
- b Department of Anatomy and Neurobiology, Xiangya School of Medicine , Central South University , Changsha , Hunan , China
| | - Shibo Tang
- a Aier School of Ophthalmology , Central South University , Changsha , Hunan , China
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Abstract
Periodontitis is caused by dysbiotic subgingival bacterial communities that may lead to increased bacterial invasion into gingival tissues. Although shifts in community structures associated with transition from health to periodontitis have been well characterized, the nature of bacteria present within the gingival tissue of periodontal lesions is not known. To characterize microbiota within tissues of periodontal lesions and compare them with plaque microbiota, gingival tissues and subgingival plaques were obtained from 7 patients with chronic periodontitis. A sequencing analysis of the 16S rRNA gene revealed that species richness and diversity were not significantly different between the 2 groups. However, intersubject variability of intratissue communities was smaller than that of plaque communities. In addition, when compared with the plaque communities, intratissue communities were characterized by decreased abundance of Firmicutes and increased abundance of Fusobacteria and Chloroflexi. In particular, Fusobacterium nucleatum and Porphyromonas gingivalis were highly enriched within the tissue, composing 15% to 40% of the total bacteria. Furthermore, biofilms, as visualized by alcian blue staining and atomic force microscopy, were observed within the tissue where the degradation of connective tissue fibers was prominent. In conclusion, very complex bacterial communities exist in the form of biofilms within the gingival tissue of periodontal lesions, which potentially serve as a reservoir for persistent infection. This novel finding may prompt new research on therapeutic strategies to treat periodontitis.
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Affiliation(s)
- K Baek
- 1 Department of Immunology and Molecular Microbiology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Korea
| | - S Ji
- 2 Department of Periodontology, Anam Hospital, Korea University, Seoul, Korea.,3 Department of Periodontology, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, Korea
| | - Y Choi
- 1 Department of Immunology and Molecular Microbiology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Korea
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He Y, Tan D, Mi Y, Bai B, Jiang D, Zhou X, Ji S. Effect of epigallocatechin-3-gallate on acrylamide-induced oxidative stress and apoptosis in PC12 cells. Hum Exp Toxicol 2017; 36:1087-1099. [PMID: 27920337 DOI: 10.1177/0960327116681648] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Acrylamide (ACR) is a chemical intermediate utilized in industry. ACR is also formed during heating of foods containing carbohydrates and amino acids. Therefore, humans are widely exposed to ACR, and ACR neurotoxicity in humans is a significant public health issue attracting wide attention. In this study, we investigated the potential neuroprotective effects of epigallocatechin-3-gallate (EGCG), the most abundant polyphenolic compound in green tea, in PC12 cells treated with ACR. ACR-treated PC12 cells pretreated with various concentrations of EGCG (2.5, 5 and 10 μM) for 24 h had increased viability and acetylcholinesterase activity and reduced apoptosis and necrosis compared to cells exposed to ACR alone. EGCG reduced the expression of bax mRNA, decreased cytochrome c release, reduced intracellular calcium levels, inactivated caspase 3 and increased mitochondrial membrane potential, suggesting that EGCG prevents ACR-induced apoptosis through a mitochondrial-mediated pathway. In addition, EGCG inhibited the formation of reactive oxygen species and lipid peroxidation while enhancing superoxide dismutase activity and glutathione levels, thereby reducing oxidative stress. Our results indicate that pretreatment of PC12 cells with EGCG attenuates ACR-induced apoptosis by reducing oxidative stress. Therefore, drinking green tea may reduce nerve injury induced by ACR.
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Affiliation(s)
- Y He
- College of Food, Shenyang Agricultural University, Shenhe District, Shenyang, People's Republic of China
| | - D Tan
- College of Food, Shenyang Agricultural University, Shenhe District, Shenyang, People's Republic of China
| | - Y Mi
- College of Food, Shenyang Agricultural University, Shenhe District, Shenyang, People's Republic of China
| | - B Bai
- College of Food, Shenyang Agricultural University, Shenhe District, Shenyang, People's Republic of China
| | - D Jiang
- College of Food, Shenyang Agricultural University, Shenhe District, Shenyang, People's Republic of China
| | - X Zhou
- College of Food, Shenyang Agricultural University, Shenhe District, Shenyang, People's Republic of China
| | - S Ji
- College of Food, Shenyang Agricultural University, Shenhe District, Shenyang, People's Republic of China
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Shi S, Xu J, Zhang B, Ji S, Xu W, Liu J, Jin K, Liang D, Liang C, Liu L, Liu C, Qin Y, Yu X. VEGF Promotes Glycolysis in Pancreatic Cancer via HIF1α Up-Regulation. Curr Mol Med 2016; 16:394-403. [PMID: 26980697 DOI: 10.2174/1566524016666160316153623] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 02/27/2016] [Accepted: 03/11/2016] [Indexed: 11/22/2022]
Abstract
BACKGROUND Vascular endothelial growth factor (VEGF) is highly expressed in many types of tumors, including pancreatic cancer. Tumor cellderived VEGF promotes angiogenesis and tumor progression. However, the role of VEGF in glucose metabolism remains unclear. OBJECTIVE We investigated the role and the underlying mechanism of VEGF in the glucose metabolism of pancreatic cancer cells. METHOD Pancreatic cancer cells were stimulated with VEGF165 for 1 or 2 h. The oxygen consumption rates (OCR) and extracellular acidification rates (ECAR) were measured using the Seahorse XF96 Extracellular Flux Analyzer. Glycolytic enzymes were detected by quantitative real-time PCR. Neuropilin 1 (NRP1) was silenced by shRNA in order to investigate its role in VEGF-induced glycolysis. Immunohistochemistry (IHC) was performed to identify the correlation among VEGF, NRP1 and hypoxia inducible factor 1α (HIF1α) in pancreatic cancer tissues. RESULTS VEGF stimulation led to a metabolic transition from mitochondrial oxidative phosphorylation to glycolysis in pancreatic cancer. HIF1α and NRP1 protein levels were both increased after VEGF stimulation. The down-regulation of NRP1 reduced glycolysis in pancreatic cancer cells. NRP1 and VEGF levels both correlated with HIF1α expression in pancreatic tumor tissues. CONCLUSION VEGF enhances glycolysis in pancreatic cancer via HIF1α up-regulation. NRP1 plays a key role in VEGF-induced glycolysis.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Y Qin
- Department of Oncology, Shanghai Medical College, Fudan University; Pancreatic Cancer Institute, Fudan University, 270 DongAn Road, Shanghai 200032, China.
| | - X Yu
- Department of Pancreatic and Hepatobiliary Surgery, Fudan University Shanghai Cancer Center; Department of Oncology, Shanghai Medical College, Fudan University; Pancreatic Cancer Institute, Fudan University, 270 DongAn Road, Shanghai 200032, China.
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Yu X, Liang C, Qin Y, Zhang B, Ji S, Shi S, Xu W, Liu J, Xiang JF, Liang D, Hu Q, Ni Q, Xu J. Oncogenic KRAS Targets MUC16/CA125 in Pancreatic Ductal Adenocarcinoma. Mol Cancer Res 2016. [DOI: 10.1158/1541-7786.mcr-16-0296-t] [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: 11/16/2022]
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Xie Z, Yuan Y, Jiang Y, Shrestha C, Chen Y, Liao L, Ji S, Deng X, Liao E, Bikle DD. p120-Catenin Is Required for Dietary Calcium Suppression of Oral Carcinogenesis in Mice. J Cell Physiol 2016; 232:1360-1367. [PMID: 27682597 DOI: 10.1002/jcp.25620] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 09/27/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Zhongjian Xie
- Department of Endocrinology and Metabolism; The Second Xiangya Hospital; Central South University; Changsha, Hunan China
- Endocrine Unit; Veterans Affairs Medical Center; Northern California Institute for Research and Education and University of California; San Francisco California
| | - Yuan Yuan
- Department of Endocrinology and Metabolism; The Second Xiangya Hospital; Central South University; Changsha, Hunan China
| | - Yi Jiang
- Department of Pathology; The Second Xiangya Hospital; Central South University; Changsha, Hunan China
| | - Chandrama Shrestha
- Department of Endocrinology and Metabolism; The Second Xiangya Hospital; Central South University; Changsha, Hunan China
| | - Ying Chen
- Institute of Traditional Chinese Medicine; China Academy of Chinese Medical Sciences; Beijing China
| | - Liyan Liao
- Department of Pathology; The Second Xiangya Hospital; Central South University; Changsha, Hunan China
| | - Shangli Ji
- Department of Endocrinology and Metabolism; The Second Xiangya Hospital; Central South University; Changsha, Hunan China
| | - Xiaoge Deng
- Department of Endocrinology and Metabolism; The Second Xiangya Hospital; Central South University; Changsha, Hunan China
| | - Eryuan Liao
- Department of Endocrinology and Metabolism; The Second Xiangya Hospital; Central South University; Changsha, Hunan China
| | - Daniel D. Bikle
- Endocrine Unit; Veterans Affairs Medical Center; Northern California Institute for Research and Education and University of California; San Francisco California
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Luo Y, Ji S, Liu Y, Lei JL, Xia SL, Wang Y, Du ML, Shao L, Meng XY, Zhou M, Sun Y, Qiu HJ. Isolation and Characterization of a Moderately Virulent Classical Swine Fever Virus Emerging in China. Transbound Emerg Dis 2016; 64:1848-1857. [PMID: 27658930 DOI: 10.1111/tbed.12581] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Indexed: 11/29/2022]
Abstract
Classical swine fever (CSF) is a devastating infectious disease of pigs caused by classical swine fever virus (CSFV). In China, CSF has been under control owing to extensive vaccination with the lapinized attenuated vaccine (C-strain) since 1950s, despite sporadic or endemic in many regions. However, recently, CSF outbreaks occurred in a large number of swine herds in China. Here, we isolated 15 CSFV strains from diverse C-strain-vaccinated pig farms in China and characterized the genetic variations and antigenicity of the new isolates. The new strains showed unique variations in the E2 protein and were clustered to the subgenotype 2.1d of CSFV recently emerging in China in the phylogenetic tree. Cross-neutralization test showed that the neutralizing titres of porcine anti-C-strain sera against the new isolates were substantially lower than those against both the highly virulent Shimen strain and the subgenotype 2.1b strains that were isolated in China in 2006 and 2009, respectively. In addition, experimental animal infection showed that the HLJZZ2014 strain-infected pigs displayed lower mortality and less severe clinical signs and pathological changes compared with the Shimen strain-infected pigs. The HLJZZ2014 strain was defined to be moderately virulent based on a previously established assessment system for CSFV virulence evaluation, and the virus shedding and the viral load in various tissues of the CSFV HLJZZ2014 strain-infected pigs were significantly lower than those of the Shimen strain-infected pigs. Taken together, the subgenotype 2.1d isolate of CSFV is a moderately virulent strain with molecular variations and antigenic alterations.
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Affiliation(s)
- Y Luo
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - S Ji
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China.,Department of Animal Medicine, Agricultural College of Yanbian University, Yanji, Jilin, China
| | - Y Liu
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - J-L Lei
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - S-L Xia
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Y Wang
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - M-L Du
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - L Shao
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - X-Y Meng
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - M Zhou
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Y Sun
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - H-J Qiu
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
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