151
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Zhou G, Tang S, Yang L, Niu Q, Chen J, Xia T, Wang S, Wang M, Zhao Q, Liu L, Li P, Dong L, Yang K, Zhang S, Wang A. Effects of long-term fluoride exposure on cognitive ability and the underlying mechanisms: Role of autophagy and its association with apoptosis. Toxicol Appl Pharmacol 2019; 378:114608. [DOI: 10.1016/j.taap.2019.114608] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 05/24/2019] [Accepted: 05/31/2019] [Indexed: 02/07/2023]
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152
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Balagamwala E, Sahgal A, Wei W, Campbell M, Reddy C, Angelov L, Suh J, Magnelli A, Balik S, Xia P, Yang K, Mohammadi A, Chao S. Multi-Institutional Validation of Recursive Partitioning Analysis for Overall Survival in Patients Undergoing Spine Radiosurgery for Spine Metastasis. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2236] [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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153
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Sun L, Zhang L, Chen XM, Li P, Zhao HX, Chen JM, Yang K, Ma ZY, Wang P. [Clinicopathological features of intestinal mucosal lesions in AIDS patients and their relation with CD4+ T lymphocytes]. Zhonghua Bing Li Xue Za Zhi 2019; 48:378-384. [PMID: 31104678 DOI: 10.3760/cma.j.issn.0529-5807.2019.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To observe the histopathological features of different opportunistic infections and tumors of the intestinal mucosa in AIDS patients, and to explore the correlation between different lesions and CD4+ T lymphocyte levels. Methods: Colonic mucosal biopsy specimens of 263 patients with clinically diagnosed AIDS and abdominal pain, diarrhea, blood in the stool and other gastrointestinal symptoms were collected from Beijing Ditan Hospital from 2010 to 2018. There were 232 males and 31 females, with age range 10-81 (mean 40±13) years. HE staining, histochemical special staining, immunohistochemical staining, and in-situ hybridization were used to detect the expression of different opportunistic infection pathogens, tumors and CD4+ T lymphocytes. Peripheral blood was also taken for CD4+ T lymphocytes, CD8+ T lymphocytes, HIV viral load and routine indicators. Results: The cohort included 263 intestinal mucosal biopsy specimens. There were 175 cases (66.5%) of non-specific inflammation, and pathogens were detected in 41 cases (15.6%), including 20 cases(7.6%) of cytomegalovirus (CMV) infection, 12 cases (4.6%) of mycobacterial infection, eight cases (3.0%) of amoeba infestation, and one case (0.3%) of talaromycesmarneffei infection; there were also 41 (15.6%) neoplastic lesions including 25 cases (9.5%) of intraepithelial neoplasia, 10 cases (3.8%) of adenocarcinoma and squamous cell carcinoma, six cases (2.3%) of lymphoma; and six cases (2.3%) of ulcerative colitis. The peripheral blood CD4+T lymphocyte levels of patients with CMV, mycobacteria and talaromycesmarneffei were less than 200/μL; the peripheral blood CD4+ T lymphocyte level (P<0.01) and intestinal mucosa CD4+T lymphocytes (P<0.01) were all significantly lower than those in patients with non-specific inflammation. The peripheral red blood cells and hemoglobin levels of patients with CMV and mycobacterial infection (P<0.01), adenocarcinoma and squamous cell carcinoma (P<0.05) were significantly lower than those of non-specific inflammation patients. Conclusions: Pathologic examination of intestinal mucosa can identify specific infections and neoplastic lesions in AIDS patients; the most common lesions are non-specific inflammation, and CMV infection is the most common opportunistic infections; CMV, mycobacteria and talaromycesmarneffei infections are associated with decreased levels of CD4+ T lymphocytes in peripheral blood and intestinal mucosa; entamoeba histolytica infestation and non-HIV-related neoplastic lesions such as intraepithelial neoplasia, adenocarcinoma and squamous cell carcinoma are not associated with changes in AIDS immune function.
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Affiliation(s)
- L Sun
- Department of Pathology, Beijing Ditan Hospital, Capital Medical University, Beijing Institute of Infectious Diseases of Combined Chinese Traditional and Western Medicine, Beijing 100015, China
| | - L Zhang
- Department of Pathology, Beijing Ditan Hospital, Capital Medical University, Beijing Institute of Infectious Diseases of Combined Chinese Traditional and Western Medicine, Beijing 100015, China
| | - X M Chen
- Department of Pathology, Beijing Ditan Hospital, Capital Medical University, Beijing Institute of Infectious Diseases of Combined Chinese Traditional and Western Medicine, Beijing 100015, China
| | - P Li
- Department of Gastroenterology, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - H X Zhao
- Clinical and Research Center of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - J M Chen
- Department of Pathology, Beijing Ditan Hospital, Capital Medical University, Beijing Institute of Infectious Diseases of Combined Chinese Traditional and Western Medicine, Beijing 100015, China
| | - K Yang
- Department of Pathology, Beijing Ditan Hospital, Capital Medical University, Beijing Institute of Infectious Diseases of Combined Chinese Traditional and Western Medicine, Beijing 100015, China
| | - Z Y Ma
- Department of Pathology, Beijing Ditan Hospital, Capital Medical University, Beijing Institute of Infectious Diseases of Combined Chinese Traditional and Western Medicine, Beijing 100015, China
| | - P Wang
- Department of Pathology, Beijing Ditan Hospital, Capital Medical University, Beijing Institute of Infectious Diseases of Combined Chinese Traditional and Western Medicine, Beijing 100015, China
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154
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Yang K, Zhao SH, Lu MJ, Song YY, Li L, Chen XY, Yin G, Wei MD. [Clinical and cardiac magnetic resonance features of apical hypertrophic cardiomyopathy patients complicating with left ventricular apical aneurysm]. Zhonghua Xin Xue Guan Bing Za Zhi 2019; 47:534-538. [PMID: 31365993 DOI: 10.3760/cma.j.issn.0253-3758.2019.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the clinical and cardiac magnetic resonance (CMR) features of apical hypertrophic cardiomyopathy (ApHCM) patients complicating with left ventricular apical aneurysm (LVAA). Methods: CMR confirmed 25 ApHCM patients complicating with LVAA from January 2010 to December 2017 in Fuwai hospital were included in this study, and the baseline clinical data and CMR characteristics were retrospectively analyzed. There were 14 pure ApHCM (hypertrophy limited at the apical segments) complicating with LVAA patients and 11 mixed ApHCM (predominantly apical hypertrophy along with thickening of contiguous non-apical left ventricular region) with LVAA patients. Results: In this patient cohort,age of 84% (21/25) patients ranged between 20-70 years old, and 68% (17/25) were male. There were 68% (17/25) patients with complaint of chest distress symptom, 56% (14/25) with complaint of chest pain, 32% (8/25) with complaint of palpitation,16% (4/25) with complaint of dyspnea, and 12% (3/25) presented as syncope. ST-T segment changes of electrocardiogram were observed in all patients, and giant negative T waves were detected in 80% patients (20/25). The rate of missed diagnosis by echocardiography for detecting ApHCM and LVAA was 16% (4/25) and 68% (17/25), respectively. CMR showed discrete thin-walled dyskinetic or akinetic segment of the most distal portion of the left ventricular chamber in ApHCM patients with LVAA. Transmural late gadolinium enhancement of the aneurysmal rim was detected in 76% (19/25) patients, and the maximum transverse dimension of aneurysm was bigger in patients with transmural late gadolinium enhancement than in patients without transmural late gadolinium enhancement ((22.0±10.8)mm vs. (11.7±4.0) mm, P=0.033). Conclusion: ApHCM with LVAA patients have distinct cardiac clinical features, and CMR is the most useful tool for the accurate and objective evaluation of this disease.
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Affiliation(s)
- K Yang
- Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - S H Zhao
- Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - M J Lu
- Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Y Y Song
- Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - L Li
- Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - X Y Chen
- Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - G Yin
- Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - M D Wei
- Department of Radiology, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100144, China
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155
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Gao Q, Yang K, Chen D, Song Y, Qiao W, Sun X, Meng L, Bian Z. Antifibrotic Potential of MiR-335-3p in Hereditary Gingival Fibromatosis. J Dent Res 2019; 98:1140-1149. [DOI: 10.1177/0022034519863300] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Hereditary gingival fibromatosis (HGF) is a highly genetically heterogeneous disease, and current therapeutic method is limited to surgical resection with a high recurrence rate. MicroRNAs (miRNAs) are able to fine-tune large-scale target genes. Here we established a simple but effective computational strategy based on available miRNA target prediction algorithms to pinpoint the most potent miRNA that could negatively regulate a group of functional genes. Based on this rationale, miR-335-3p was top ranked by putatively targeting 85 verified profibrotic genes and 79 upregulated genes in HGF patients. Experimentally, downregulation of miR-355-3p was demonstrated in HGF-derived gingival fibroblasts as well as in transforming growth factor β–stimulated normal human gingival fibroblasts (NHGFs) compared to normal control. Ectopic miR-335-3p attenuated, whereas knockdown of miR-335-3p promoted, the fibrogenic activity of human gingival fibroblasts. Mechanically, miR-335-3p directly targeted SOS1, SMAD2/3, and CTNNB1 by canonical and noncanonical base paring. In particular, different portfolios of fibrotic markers were suppressed by silencing SOS1, SMAD2/3, or CTNNB1, respectively. Thus, our study first proposes a novel miRNA screening approach targeting a functionally related gene set and identifies miR-335-3p as a novel target for HGF treatment. Mechanically, miR-335-3p suppresses the fibrogenic activity of human gingival fibroblasts by repressing multiple core molecules in profibrotic networks. Our strategy provides a new paradigm in the treatment for HGF as well as other diseases.
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Affiliation(s)
- Q. Gao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - K. Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - D. Chen
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - Y. Song
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - W. Qiao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - X. Sun
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - L. Meng
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - Z. Bian
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
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156
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Ge L, Zhu Y, Qi Y, Chen Y, Yang K. Enantioseparation of racemic bupivacaine via ultrasonic-assisted diastereomeric crystallization using 12,14-dinitrodehydroabietic acid. Ultrason Sonochem 2019; 55:256-261. [PMID: 30712856 DOI: 10.1016/j.ultsonch.2019.01.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Revised: 01/03/2019] [Accepted: 01/17/2019] [Indexed: 06/09/2023]
Abstract
12,14-Dinitrodehydroabietic acid (12,14-dinitroDHAA), a chiral acid obtained by the nitration of optical dehydroabietic acid (DHAA), was successfully employed as resolving agent. The resolution of racemic bupivacaine by ultrasonic-assisted diastereomeric crystallization in ethanol was investigated. The results indicated that ultrasonic-assist can well facilitate resolution of (R,S)-bupivacaine and a higher enantiomeric excess (ee) and yield was obtained for (S)-bupivacaine, and while without ultrasound, the ee value decreases by increasing the crystallization time. A Box-Behnken experimental design with four factors (amount of 12,14-dinitroDHAA, ethanol amount, ultrasonic power and crystallization temperature) combined with response surface methodology (RSM) was applied to explore resolution effects. A second-order polynomial equation was adequate to model the relationship between the ee (or yield) and the dependent variables. When maintaining a lower limit of 90% for the yield of (S)-bupivacaine, the optimal resolution conditions by RSM were 12,14-dinitroDHAA/bupivacaine molar ratio of 1.6, solvent/propranolol ratio of 16.5 mL/g, 63.2 W ultrasonic power and crystallization temperature of 0 °C, respectively. Under the optimal conditions, the experimental ee and yield of (S)-bupivacaine were 69.8% and 87.5%.
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Affiliation(s)
- Li Ge
- Department of Pharmaceutical Engineering, Medical College, Guangxi University, Nanning 530004, China
| | - Yi Zhu
- School of Chemistry & Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Yonghui Qi
- School of Chemistry & Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Yande Chen
- School of Chemistry & Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Kedi Yang
- Department of Pharmaceutical Engineering, Medical College, Guangxi University, Nanning 530004, China.
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157
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Yang K, Sherwani M, Shadab M, Jani A, Yusuf N, Elmets C. 769 Interleukin-10 enhances DNA damage in human melanocytes. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.845] [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: 11/27/2022]
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158
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Sherwani M, Yang K, Raman C, Elmets C, Yusuf N. 768 Type I interferons modulate ultraviolet radiation induced suppression of immune responses via Stimulator of Interferon Genes (STING). J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.844] [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: 10/27/2022]
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159
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Xiao L, He C, Luo L, Yang K, Yang L, Xu K, Zheng Y, Gu C, Huang Q, Meng H. Genome-wide association study identified genes in the response to Salmonella pullorum infection in chickens. Anim Genet 2019; 50:403-406. [PMID: 31017703 DOI: 10.1111/age.12787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/12/2019] [Indexed: 11/27/2022]
Abstract
Pullorum is a bacterial disease that threatens the modern poultry industry. Over the years, research on this topic has focused mainly on its epidemiology, whereas the hosts' genetic basis of infection is still vague. In order to identify chickens' genes associated with pullorum, we sequenced 300 New Pudong chicken by double digest genotyping-by-sequencing. We obtained 1 527 953 SNPs for a genome-wide association analysis, which identified 43 genome-wide significant markers. Most of the significant SNPs were in the interval of 57.7-59.0 Mb on chromosome 5. The gene set enrichment analysis suggests a potential manner for bacterial infection and remaining inside the host. This work provides basic data for the purification, prevention and treatment of pullorum disease.
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Affiliation(s)
- L Xiao
- Shanghai Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, 200240, Shanghai, China
| | - C He
- Shanghai Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, 200240, Shanghai, China
| | - L Luo
- Shanghai Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, 200240, Shanghai, China
| | - K Yang
- Animal Husbandry and Veterinary Research Institute, Shanghai Academy of Agricultural Science, 2901 Beidi Road, 201106, Shanghai, China
| | - L Yang
- Shanghai Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, 200240, Shanghai, China
| | - K Xu
- Shanghai Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, 200240, Shanghai, China
| | - Y Zheng
- Shanghai Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, 200240, Shanghai, China
| | - C Gu
- Animal Husbandry and Veterinary Research Institute, Shanghai Academy of Agricultural Science, 2901 Beidi Road, 201106, Shanghai, China
| | - Q Huang
- Animal Husbandry and Veterinary Research Institute, Shanghai Academy of Agricultural Science, 2901 Beidi Road, 201106, Shanghai, China
| | - H Meng
- Shanghai Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, 200240, Shanghai, China
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160
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Jiang LL, Chen CC, Yang K. Lessons learned from an unusual condition of incidental synchronous multiple hernias of indirect inguinal hernia, femoral hernia, and incarcerated obturator hernia. Niger J Clin Pract 2019; 22:281-284. [PMID: 30729956 DOI: 10.4103/njcp.njcp_200_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Hernias are one of the most common diseases. The frequency of multiple hernias is much higher than the frequency reported during herniorrhaphy. Multiple hernias may account for some of the so-called recurrences, in which the small hernia may be veiled by the bigger one and omitted. In this study, we present a case of an 83-year-old female who suffered from multiple hernias namely a left-sided indirect inguinal hernia, a right-sided femoral hernia, and a right-sided incarcerated obturator hernia. Additionally, the characteristics and treatment of obturator hernia were discussed. Ultrasound and computed tomography (CT) are capable of accurately diagnosing groin hernia. Preoperative bilateral ultrasound of examinations or abdominopelvic CT should be recommended to perform routinely for patients with suspected hernias to avoid ignoring the concurrent hernias. A careful exploration of the operative field in the operation is mandatory. The CT is also helpful for early diagnosis of obturator hernia. In addition, the intra-abdominal approach through a low midline incision might be a preference for the treatment of obturator hernia.
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Affiliation(s)
- L L Jiang
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - C C Chen
- Department of Nephrology, West China Hospital, Sichuan University, Chengdu, China
| | - K Yang
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
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161
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Goiffon R, Best T, Yang K, Fintelmann F. 03:36 PM Abstract No. 377 Reduced computed tomography-guided chest biopsy procedure time and radiation dose with an axial, pedal-controlled acquisition technique. J Vasc Interv Radiol 2019. [DOI: 10.1016/j.jvir.2018.12.451] [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: 10/27/2022] Open
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162
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Wang W, Nune KC, Tan L, Zhang N, Dong J, Yan J, Misra RDK, Yang K. Bone regeneration of hollow tubular magnesium‑strontium scaffolds in critical-size segmental defects: Effect of surface coatings. Mater Sci Eng C Mater Biol Appl 2019; 100:297-307. [PMID: 30948064 DOI: 10.1016/j.msec.2019.02.067] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 01/18/2019] [Accepted: 02/16/2019] [Indexed: 12/20/2022]
Abstract
Segmental defects are formidable challenges for orthopedic surgeons that are caused by large osseous defects such as open injury, comminuted fracture as well as other severe traumas and infection. Current treatment options have practical and clinical shortcomings, calling for innovative bone graft materials. This study is related to hollow tubular magnesium‑strontium (MgSr) alloy scaffolds with autologous morselized bone filled inside and three different coatings were individually applied on MgSr scaffolds, respectively, to study the effects of degradation and bioactivity of the grafts on new bone growth. The optimal coating method was screened using immersion tests, cell proliferation and adhesion, alkaline phosphatase (ALP) assay in vitro, and 4 weeks' implantation in a critical-size segmental defect in vivo. More new bone formation was observed by radiographic tests and histology along the ulna defects, when magnesium scaffold grafts were implanted. Meanwhile, depression occurred for blank control group with only autologous morselized bone filled, because of rapid absorption rate of morselized bone during initial implantation. Therefore, biodegradable MgSr alloy grafts showed their potential application in treating the critical-size segmental defects. As for different coating methods, CaP chemically deposited (CaP) coated sample showed least H2 evolution in vivo, demonstrating highest corrosion resistance and relative stable interfaces, however, the least beneficial ion release meanwhile. Micro-arc oxidation coating (MAO) degraded faster comparing with CaP, while with the main composition of MgO. They both indicate insufficient bioactivity in bone formation. The results suggest superior combination of bioactive surface, beneficial ions release and appropriate corrosion rate of Strontium phosphate conversion (SrP) coating, indicating superior comprehensive oeteoconductive and osteoinductive properties of coatings on hollow tubular MgSr alloy scaffold.
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Affiliation(s)
- W Wang
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - K C Nune
- Department of Metallurgical, Material and Biomedical Engineering, The University of Texas at EI Paso, TX 79968, USA
| | - L Tan
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China.
| | - N Zhang
- Department of Orthopedic Surgery, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, 150081, China
| | - J Dong
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
| | - J Yan
- Department of Orthopedic Surgery, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, 150081, China
| | - R D K Misra
- Department of Metallurgical, Material and Biomedical Engineering, The University of Texas at EI Paso, TX 79968, USA.
| | - K Yang
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China.
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163
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Ju T, Shoblak Y, Gao Y, Yang K, Fouhse J, So Y, Willing B. 348 The initial gut microbial composition is a key factor driving host responses to antibiotic treatment. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.378] [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: 11/13/2022] Open
Affiliation(s)
- T Ju
- University of Alberta,Edmonton, AB, Canada
| | - Y Shoblak
- University of Alberta,Edmonton, AB, Canada
| | - Y Gao
- University of Alberta,Edmonton, AB, Canada
| | - K Yang
- University of Alberta,Edmonton, AB, Canada
| | - J Fouhse
- University of Alberta,Edmonton, AB, Canada
| | - Y So
- University of Alberta,Edmonton, AB, Canada
| | - B Willing
- University of Alberta,Edmonton, AB, Canada
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164
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Su Y, Quan C, Li X, Shi Y, Duan P, Yang K. Mutual promotion of apoptosis and autophagy in prepubertal rat testes induced by joint exposure of bisphenol A and nonylphenol. Environ Pollut 2018; 243:693-702. [PMID: 30228064 DOI: 10.1016/j.envpol.2018.09.030] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 08/10/2018] [Accepted: 09/04/2018] [Indexed: 06/08/2023]
Abstract
BPA and NP are both typical endocrine disruptors, the exposed populations are widespread, and the health risks mustn't be ignored. However, the interactions between them on spermatogenesis are rarely mentioned. And the underlying mechanism is unclear yet. In the present study, prepubertal SD rats were exposed to different low doses of BPA and NP separately or jointly for 4 weeks. The results indicate that the joint exposure induced excessive apoptosis and autophagy in the testes, as proved by a series of characteristics such as chromatin condensation and autophagosomes formation. Besides, endocrine disorders and oxidative stress were also caused by the exposure. Apoptosis was mediated by the mitochondrial apoptosis pathway, since the Bax and Caspase-3 gene expressions significantly increased with a prominent decrease of Bcl-2. While autophagy was caused by the inhibition of the Akt/mTOR pathway, as the expressions of the downstream genes Beclin-1, Atg5, Atg12 and the split of LC3 protein increased altogether. Worse yet, autophagy and apoptosis might reinforce each other and make the situation more severe in the joint group. What's more, remarkable histopathological changes such as spermatogenic epithelium atrophy, germ cell loss, and various ultrastructural modifications were strongly related to the apoptosis and autophagy. In aggregate, this study shows the enormous risk on male reproductive system brought by the interactions between BPA and NP. The findings provide a broader vision to understand the roles of apoptosis and autophagy induced by the joint exposure in the aggravation of spermatogenesis impairment, which could be a reference for the situation of complex EDCs exposure-induced male reproductive toxicity, and possibly inspire us to find new ideas for preventive and therapeutic treatments.
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Affiliation(s)
- Yanwei Su
- School of Nursing, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Chao Quan
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China; Department of Epidemiology and Health Statistics, School of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan, 430030, China.
| | - Xiandong Li
- Department of Clinical Laboratory, Taihe Hospital, Hubei University of Medicine, Shiyan, 442000, China
| | - Yuqin Shi
- Department of Epidemiology and Health Statistics, School of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan, 430030, China
| | - Peng Duan
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China; Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Kedi Yang
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
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165
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Wang B, Ge L, Mo J, Su L, Li Y, Yang K. Essential oils and ethanol extract from Camellia nitidissima and evaluation of their biological activity. J Food Sci Technol 2018; 55:5075-5081. [PMID: 30483003 PMCID: PMC6233457 DOI: 10.1007/s13197-018-3446-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 09/17/2018] [Accepted: 09/24/2018] [Indexed: 10/28/2022]
Abstract
Camellia nitidissima, a well-known species of yellow Camellia, has undergone commercial cultivation as a new tea resource recently. Herein, the composition, antioxidant and antimicrobial activities of the essential oil and ethanol extract of C. nitidissima were investigated. The essential oils from the leaves and flowers of C. nitidissima were obtained by hydro-distillation. A total of 56 and 34 constituents accounting for 77.5 and 96.8% of the oils were identified by GC-MS. Linalool (35.8%), phytol (7.9%), cis-geranyl acetone (7.3%) and methyl salicylate (6.8%) were found to be the primary components in the leaf oil, while the flower oil was rich in α-eudesmol (34.3%), γ-eudesmol (31.5%) and linalool (11.1%). The ethanol extract of C. nitidissima leaves contained 281.04 mg gallic acid equivalent/g of total phenols. The antioxidant activities of the two oils and extract were evaluated by DPPH and ABTS radical-scavenging assays. The IC50 values varied from 17.4 (extract) to 720.3 μg/mL (flower oil) for DPPH and from 28.8(extract) to 889.6 μg/mL (flower oil) for ABTS. Both essential oils exhibited moderate antioxidant activities, and the extract possessed strong effects close to ascorbic acid. Additionally, the antimicrobial activities of the oils and extract against Staphylococcus aureus, Bacillus subtilis, Escherichia coli and Pseudomonas aeruginosa were evaluated by agar dilution assay. No considerable bactericidal activities were observed for either essential oil or extract compared with ampicillin and tobramycin standards. The results indicated the extract was more efficient than the two essential oils against S. aureus (MIC = 0.625 mg/mL) and B. subtilis (MIC = 1.25 mg/mL).
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Affiliation(s)
- Bing Wang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004 People’s Republic of China
| | - Li Ge
- Medical College, Guangxi University, Nanning, 530004 People’s Republic of China
| | - Jianguang Mo
- Guangxi Research Center of Analysis and Testing, Nanning, 530022 People’s Republic of China
| | - Lin Su
- Guangxi Research Center of Analysis and Testing, Nanning, 530022 People’s Republic of China
| | - Yuejuan Li
- Guangxi Zhuang Autonomous Region Forestry Research Institute, Nanning, 530002 People’s Republic of China
| | - Kedi Yang
- Medical College, Guangxi University, Nanning, 530004 People’s Republic of China
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166
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Guo Y, Luo Y, Zhang Q, Huang X, Li Z, Shen L, Feng J, Sun Y, Yang K, Ge MH, Zhu X, Wang L, Liu Y, He X, Bai C, Xue K, Zeng Y, Cao Y, Chen W, Lin T. First-line cetuximab plus cisplatin and fluorouracil vs cisplatin and fluorouracil in Chinese patients with recurrent and/or metastatic squamous cell carcinoma of the head and neck: The randomized, phase III CHANGE-2 trial. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy483.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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167
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Bae Y, Yang K, Willke P, Choi T, Heinrich AJ, Lutz CP. Enhanced quantum coherence in exchange coupled spins via singlet-triplet transitions. Sci Adv 2018; 4:eaau4159. [PMID: 30430136 PMCID: PMC6226279 DOI: 10.1126/sciadv.aau4159] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 10/10/2018] [Indexed: 06/02/2023]
Abstract
Manipulation of spin states at the single-atom scale underlies spin-based quantum information processing and spintronic devices. These applications require protection of the spin states against quantum decoherence due to interactions with the environment. While a single spin is easily disrupted, a coupled-spin system can resist decoherence by using a subspace of states that is immune to magnetic field fluctuations. Here, we engineered the magnetic interactions between the electron spins of two spin-1/2 atoms to create a "clock transition" and thus enhance their spin coherence. To construct and electrically access the desired spin structures, we use atom manipulation combined with electron spin resonance (ESR) in a scanning tunneling microscope. We show that a two-level system composed of a singlet state and a triplet state is insensitive to local and global magnetic field noise, resulting in much longer spin coherence times compared with individual atoms. Moreover, the spin decoherence resulting from the interaction with tunneling electrons is markedly reduced by a homodyne readout of ESR. These results demonstrate that atomically precise spin structures can be designed and assembled to yield enhanced quantum coherence.
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Affiliation(s)
- Y. Bae
- Center for Quantum Nanoscience, Institute for Basic Science, Seoul 03760, Republic of Korea
- IBM Almaden Research Center, San Jose, CA 95120, USA
- Department of Physics, Ewha Womans University, Seoul 03760, Republic of Korea
| | - K. Yang
- IBM Almaden Research Center, San Jose, CA 95120, USA
| | - P. Willke
- Center for Quantum Nanoscience, Institute for Basic Science, Seoul 03760, Republic of Korea
- IBM Almaden Research Center, San Jose, CA 95120, USA
- Department of Physics, Ewha Womans University, Seoul 03760, Republic of Korea
| | - T. Choi
- Center for Quantum Nanoscience, Institute for Basic Science, Seoul 03760, Republic of Korea
- Department of Physics, Ewha Womans University, Seoul 03760, Republic of Korea
| | - A. J. Heinrich
- Center for Quantum Nanoscience, Institute for Basic Science, Seoul 03760, Republic of Korea
- Department of Physics, Ewha Womans University, Seoul 03760, Republic of Korea
| | - C. P. Lutz
- IBM Almaden Research Center, San Jose, CA 95120, USA
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168
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Cai Z, Feng Y, Li C, Yang K, Sun T, Xu L, Chen Y, Yan CH, Lu WW, Chiu KY. Magnoflorine with hyaluronic acid gel promotes subchondral bone regeneration and attenuates cartilage degeneration in early osteoarthritis. Bone 2018; 116:266-278. [PMID: 30149068 DOI: 10.1016/j.bone.2018.08.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 08/15/2018] [Accepted: 08/22/2018] [Indexed: 12/24/2022]
Abstract
OBJECTIVE To investigate efficacy of Chinese medicine magnoflorine combined with hyaluronic acid (HA)-gel in promoting subchondral bone (SCB) regeneration and attenuating cartilage degeneration in early osteoarthritis (OA). METHODS MC3T3-E1 under magnoflorine treatment was assayed by XTT to determine cell viability. Cell proliferation was reflected through cell cycle. Osteoblast mineralization was stained by Alizarin Red. Standardized bone canal of 1 mm in diameter and 4 mm in depth was made on tibial medial plateau of 4-month-old Dunkin-Hartley spontaneous knee OA guinea pigs. Guinea pigs (n = 5/group) were treated once intra-bone canal injection of 2 μl HA-gel, 2 μl HA-gel+50 ng magnoflorine and null (Defect) respectively, except sham group. The left hind limbs were harvested for μCT scan and histopathological staining 2-month post-surgery. RESULTS 25 μg/ml magnoflorine treatment significantly increased cell viability, S-phase and mineralization of MC3T3-E1 cells. In vivo, HA-gel + magnoflorine treatment significantly altered SCB microstructure; changes included increase in bone volume fraction (BV/TV), trabecular number (Tb.N), connectivity density (Conn.Dn), and decrease in degree of anisotropy (DA), which implied trabecular bone regeneration. Treatment also resulted in a decrease in modified Mankin's scores, and an increase in volume ratio of hyaline cartilage (HC)/calcified cartilage (CC) and fractal dimension (FD, roughness indicator of osteochondral conjunction), compared to Defect and HA groups. Furthermore, FD was positively associated with volume ratio of HC/CC and negatively associated with modified Mankin's scores. Finally, histological results showed that due to a faster regeneration of SCB with the HA-gel + magnoflorine treatment, the reduction of cartilage matrix and the decreased expression of chondrogenic signals were attenuated. CONCLUSION Our study elucidated the potential benefits of HA-gel + magnoflorine in promoting SCB regeneration and revealed a protective effect of stimulating recovery of the SCB integrity on attenuating cartilage degradation to prevent OA progression.
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Affiliation(s)
- Zhe Cai
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Yu Feng
- Department of Traumatology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China
| | - Chentian Li
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Kedi Yang
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Tianhao Sun
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Lei Xu
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Yan Chen
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Chun-Hoi Yan
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - William Weijia Lu
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong; Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, China.
| | - Kwong-Yuen Chiu
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong.
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169
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Huang J, Wu G, Yang K, Peng G, Ding Q, Qin Y, Wang T, Yin Z. Long-Term Therapeutic Outcome and Prognostic Factors for Patients with Nasopharyngeal Carcinoma Receiving Intensity-Modulated Radiation Therapy: An Analysis of 608 Patients from Low-Endemic Regions of China. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.843] [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: 10/28/2022]
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170
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Feng Y, Cai Z, Cheung WK, Yang K, Xu L, Lu WW, Yang H, Chiu KY. Multichromatic TTF staining characterizes cartilage matrix in osteoarthritis and bone development. Histol Histopathol 2018; 34:275-286. [PMID: 30234227 DOI: 10.14670/hh-18-044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Various histological staining methods have been explored to detect the joint lesions in osteoarthritis (OA), but these histological stains cannot comprehensively present the comparatively complex structures of articular cartilage in knee OA. In addition, no integrated histological staining method can be used to evaluate efficiently both the subzone region and matrix composition in cartilage containing tissues. Therefore, in this study, a novel multichromatic staining method termed TTF staining, using Toluidine Blue (T), Tartrazine (T) and Fast Green (F) sequential combined staining for histological analysis, has been exploited to characterize the changes of matrix components and contents in cartilage during OA and in the bone development. This specific TTF staining profile can be used to differentiate the major compartments of knee joint region, including the synovium, meniscus, multiple subzones of cartilage and subchondral bone. An anterior cruciate ligament transection induced OA model in rat has been established to profoundly present the alterations of glycosaminoglycans in cartilage degeneration by TTF staining profile. The changes of TTF staining profile in the chondrification and ossification centers of the postnatal rat knee joint indicate the developmental features of cartilage matrix during the growth of bone. In summary, we have developed an effective histological staining method that enables us to identify the subzones of cartilage in detail and to define the matrix features of bone development. Therefore, finally using this new TTF staining method may help us to exploit a histopathological grading system to assess cartilage lesions in clinical disease.
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Affiliation(s)
- Yu Feng
- Department of Traumatology, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Zhe Cai
- The Joint Center for Infection and Immunity; 1. Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou, China; 2. Institute Pasteur of Shanghai, Chinese Academy of Science, Shanghai, China. .,Department of Pathology, The Second Affiliated Hospital of Guangzhou Medical University, The Guangzhou Medical University, Guangzhou, China.,Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Wing Ki Cheung
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Kedi Yang
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Lei Xu
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong.,Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, China
| | - William Weijia Lu
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong.,Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, China.
| | - Haibo Yang
- Department of Traumatology, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Kwong-Yuen Chiu
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong.
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171
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Yang K, Qi H, Huang SS, Wen XH, Zhu JJ, Cai LR, Zeng W, Tang GD, Luo Y, Kang DY. [Screening for hotspot mutations associated with genetic hearing impairment in pregnant women and subsequent prenatal diagnosis in high risk pregnancies]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 53:645-649. [PMID: 30293254 DOI: 10.3760/cma.j.issn.1673-0860.2018.09.002] [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 screen for hotspot gene mutations associated with genetic deafness in Chinese pregnant women, and to perform risk assessment and prenatal diagnosis in high-risk families. Methods: Between November 2012 and October 2017, 26 117 pregnant women were screened by molecular hybridization microarray for 9 hot-spot mutations in 4 hereditary deafness related genes (GJB2 c. 35 del G, c. 176_191 del 16 bp, c. 235 del G, c. 299_300 del AT, GJB3 c. 538 C>T, SLC26A4 c. 2168 A>G, IVS 7-2 A>G, mitochondrial DNA 12S rRNA m. 1494 C>T, m. 1555 A>G). Genotype analysis was carried out in husbands of women carrying mutations, and prenatal diagnosis was carried out in the fetuses with high risk of deafness. Results: Among all women tested, 1 208(4.63%) were carriers of genetic deafness mutations, 7 with hearing impairment were affected by homozygous or compound heterozygous mutations, 51 were mitochondrial gene mutation carriers, 103 were carriers of GJB3 c. 538 C>T heterozygous mutation, 1 026 were carriers of GJB2 or SLC26A4 heterozygous mutations, and 21 carried heterozygous mutations in two genes simultaneously. In 394 families, the husbands accepted gene sequence testing, and 27 in which were determined as carriers of mutations in identical genes as their wives. Among which, 18 families received prenatal diagnosis, and 5 fetuses were diagnosed as hereditary deafness. In 9 families who did not receive prenatal diagnosis, 1 neonate was diagnosed as compound heterozygote after delivery. Conclusion: In order to prevent birth defects with congenital hearing problems, it is effective to provide screening for hotspot mutations in pregnant women and to perform prenatal diagnosis on high risk pregnancies.
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Affiliation(s)
- K Yang
- Prenatal Diagnosis Center, Haidian Maternal and Child Health Care Hospital. Beijing 100080, China
| | - H Qi
- Prenatal Diagnosis Center, Haidian Maternal and Child Health Care Hospital. Beijing 100080, China
| | - S S Huang
- Department of Otorhinolaryngology Head and Neck Surgery, Chinese People's Liberation Army General Hospital, Beijing 100853, China
| | - X H Wen
- Prenatal Diagnosis Center, Haidian Maternal and Child Health Care Hospital. Beijing 100080, China
| | - J J Zhu
- Prenatal Diagnosis Center, Haidian Maternal and Child Health Care Hospital. Beijing 100080, China
| | - L R Cai
- Prenatal Diagnosis Center, Haidian Maternal and Child Health Care Hospital. Beijing 100080, China
| | - W Zeng
- Prenatal Diagnosis Center, Haidian Maternal and Child Health Care Hospital. Beijing 100080, China
| | - G D Tang
- Prenatal Diagnosis Center, Haidian Maternal and Child Health Care Hospital. Beijing 100080, China
| | - Y Luo
- Prenatal Diagnosis Center, Haidian Maternal and Child Health Care Hospital. Beijing 100080, China
| | - D Y Kang
- Department of Otorhinolaryngology Head and Neck Surgery, Chinese People's Liberation Army General Hospital, Beijing 100853, China
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172
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Luo F, Yang K, Wang YZ, Lin D. TMEM45B is a novel predictive biomarker for prostate cancer progression and metastasis. Neoplasma 2018; 65:815-821. [PMID: 30249106 DOI: 10.4149/neo_2018_170822n551] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 02/28/2018] [Indexed: 11/08/2022]
Abstract
It is urgently needed to explore the clinical relevance of TMEM45B expression and Prostate cancer(PCa), and determine the predictive significance of TMEM45B as a biomarker for PCa patients.Patient-derived xenograft (PDX) model of PCa with different metastatic potential (LTL-418, LTL-313B, LTL-313H and LTL-331) were developed. The gene expression microarray of LTL-313H and LTL-313B, which derived from a single PCa patient, was performed to identify the candidate biomarker gene, TMRM45B. MSKCC and TCGA PCa patient cohorts were introduced to analyzed the clinical significance of TMEM45B expression. Quantitative Real-Time PCR (qRT-PCR) revealed that there was a significant increase of TMEM45B expression in high metastatic potential tumor lines LTL-313H and LTL-331 compared with the other two low metastatic potential tumor lines(LTL-418, LTL-313B). In MSKCC PCa cohort, the mRNA level of TMEM45B in patients with metastasis was significantly higher than that in primary PCa (P=0.001) and begin prostate hyperplasia (BPH) patients (P<0.001). In addition, the increased TMEM45B expression was positively related with a higher possibility of biochemical recurrence (P=0.016), distant metastasis occurrence(P<0.001) and overall patient survival (P=0.07). Moreover, TMEM45B expression was considered as an independent risk factor for metastasis of PCa based on multivariate logistic regression. Kaplan-Meier analysis showed that patients with elevated TMEM45B had a shorter biochemical recurrence free survival (RFS). For primary PCa patients, subgroup analysis showed that there was a significant association between TMEM45B expression and clinical features in primary PCa cohort. Meanwhile, cases with elevated TMEM45B were more likely to develop metastasis compared to the normal group among N0 primary PCa patients (P=0.010). Primary PCa patient cohort TCGA was used to validate the results, and an obvious relationship was found between TMEM45B and clinical characteristic of PCa (T/N stage, Gleason score, Recurrence / Progress). Furthermore, a significant poor disease free survival (DFS) was investigated in high-level of TMEM45B patients compared with the other remaining cases (P=0.007). Taken together, the increased expression of TMEM45B appears to be significantly associated with prostate carcinoma progression and metastasis which provide a new prognostic biomarker for predicting metastatic potential of PCa patients, especially for primary PCa.
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Affiliation(s)
- F Luo
- The Vancouver Prostate Centre, Vancouver General Hospital, Vancouver, Canada.,Department of Experimental Therapeutics, BC Cancer Agency, Vancouver, Canada.,Department of Urology, Tianjin Union Medical Center, Tianjin, China
| | - K Yang
- Department of Urology, The Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin, China
| | - Y Z Wang
- The Vancouver Prostate Centre, Vancouver General Hospital, Vancouver, Canada.,Department of Experimental Therapeutics, BC Cancer Agency, Vancouver, Canada
| | - D Lin
- The Vancouver Prostate Centre, Vancouver General Hospital, Vancouver, Canada.,Department of Experimental Therapeutics, BC Cancer Agency, Vancouver, Canada
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173
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Yang K, Miron RJ, Bian Z, Zhang YF. A bone-targeting drug-delivery system based on Semaphorin 3A gene therapy ameliorates bone loss in osteoporotic ovariectomized mice. Bone 2018; 114:40-49. [PMID: 29883786 DOI: 10.1016/j.bone.2018.06.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Revised: 06/01/2018] [Accepted: 06/04/2018] [Indexed: 12/15/2022]
Abstract
Osteoporosis is a serious health problem worldwide. Semaphorins (Sema) have been described as key molecules involved in the cross-talk between bone cells (osteoblasts/osteoclasts). In this study, we investigated whether plasmid containing Sema3a could ameliorate bone loss in an ovariectomized (OVX) mouse model via (AspSerSer)6, a selectively bone-targeting moiety. Plasmid pcDNA3.1(+)-Sema3a-GFP was fabricated and transfected cells with the plasmid demonstrated statistically higher levels of Sema3A in vitro (p < 0.001). Mice were ovariectomized and injected twice weekly with (AspSerSer)6-(STR-R8)+pcDNA3.1(+)-Sema3a-GFP for four weeks. The aim of the study was twofold: firstly to design an effective bone-targeting drug-delivery system (AspSerSer)6. Secondly, the effects of Sem3A gene therapy on bone loss was investigated. Here, the targeting selectivity of pcDNA3.1(+)-Sema3a-GFP via (AspSerSer)6 to the trabecular bone surface was firstly verified by histological observation of frozen sections and immunofluorescence staining. Then, bone microstructure analysis by Micro-CT indicated significantly less bone loss in mice treated with (AspSerSer)6-(STR-R8)+pcDNA3.1(+)-Sema3a-GFP compared to the control group (p < 0.05). Furthermore,H&E staining and Safranin O staining of the decalcified sections demonstrated statistically significantly higher bone area/total area in the mice that were injected with (AspSerSer)6-(STR-R8)+pcDNA3.1(+)-Sema3a-GFP (p < 0.001, p < 0.01,respectively). TRAP staining and immunohistochemistry staining of COL I demonstrated lower numbers of osteoclasts and significantly increased numbers of osteoblasts in the bone-targeting moiety delivering pcDNA3.1(+)-Sema3a-GFP group, when compared to the control group (p < 0.01, p < 0.001,respectively). Together, our findings have identified that, (AspSerSer)6, a bone-targeting drug-delivery system based on semaphorin3A gene therapy, ameliorated bone loss in osteoporotic ovariectomized mice, by suppressing osteoclastic bone resorption and simultaneously increasing osteoblastic bone formation. Gene therapy by local site-specific Sema3A overexpression might be a potential new strategy for treating osteoporosis and bone defects.
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Affiliation(s)
- K Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - R J Miron
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China; Department of Periodontology, Cell Therapy Institute, College of Dental Medicine, Nova Southeastern University, Fort Lauderdale, Florida, USA
| | - Z Bian
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China; Department of Endodontics, School and Hospital of Stomatology, Wuhan University, Wuhan, China.
| | - Y F Zhang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China; Department of Dental Implantology, School and Hospital of Stomatology, Wuhan University, Wuhan, China.
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174
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Bosc D, Vezenkov L, Bortnik S, An J, Xu J, Choutka C, Hannigan AM, Kovacic S, Loo S, Clark PGK, Chen G, Guay-Ross RN, Yang K, Dragowska WH, Zhang F, Go NE, Leung A, Honson NS, Pfeifer TA, Gleave M, Bally M, Jones SJ, Gorski SM, Young RN. A new quinoline-based chemical probe inhibits the autophagy-related cysteine protease ATG4B. Sci Rep 2018; 8:11653. [PMID: 30076329 PMCID: PMC6076261 DOI: 10.1038/s41598-018-29900-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 07/17/2018] [Indexed: 01/06/2023] Open
Abstract
The cysteine protease ATG4B is a key component of the autophagy machinery, acting to proteolytically prime and recycle its substrate MAP1LC3B. The roles of ATG4B in cancer and other diseases appear to be context dependent but are still not well understood. To help further explore ATG4B functions and potential therapeutic applications, we employed a chemical biology approach to identify ATG4B inhibitors. Here, we describe the discovery of 4-28, a styrylquinoline identified by a combined computational modeling, in silico screening, high content cell-based screening and biochemical assay approach. A structure-activity relationship study led to the development of a more stable and potent compound LV-320. We demonstrated that LV-320 inhibits ATG4B enzymatic activity, blocks autophagic flux in cells, and is stable, non-toxic and active in vivo. These findings suggest that LV-320 will serve as a relevant chemical tool to study the various roles of ATG4B in cancer and other contexts.
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Affiliation(s)
- D Bosc
- Department of Chemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada
- Inserm, Institut Pasteur de Lille, U1177 Drugs & Molecules for Living Systems, Université de Lille, F-59000, Lille, France
| | - L Vezenkov
- Department of Chemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS, Université de Montpellier, ENSCM, Faculté de Pharmacie, 15 avenue Charles Flahault, 34093, Montpellier, France
| | - S Bortnik
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver, BC, V5Z 4E6, Canada
- Interdisciplinary Oncology Program, University of British Columbia, Vancouver, Canada
| | - J An
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver, BC, V5Z 4E6, Canada
| | - J Xu
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver, BC, V5Z 4E6, Canada
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada
| | - C Choutka
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver, BC, V5Z 4E6, Canada
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada
| | - A M Hannigan
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver, BC, V5Z 4E6, Canada
| | - S Kovacic
- Department of Chemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada
| | - S Loo
- Department of Chemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada
| | - P G K Clark
- Department of Chemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada
| | - G Chen
- Department of Chemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada
| | - R N Guay-Ross
- Department of Chemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada
| | - K Yang
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver, BC, V5Z 4E6, Canada
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada
| | - W H Dragowska
- Experimental Therapeutics, BC Cancer Agency, Vancouver, BC, V5Z 4E6, Canada
| | - F Zhang
- Department of Urologic Sciences and Vancouver Prostate Centre, University of British Columbia, Vancouver, BC, V6H 3Z6, Canada
| | - N E Go
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver, BC, V5Z 4E6, Canada
| | - A Leung
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver, BC, V5Z 4E6, Canada
| | - N S Honson
- Centre for Drug Research and Development, 2405 Wesbrook Mall - 4th Floor, Vancouver, BC, V6T 1Z3, Canada
| | - T A Pfeifer
- Centre for Drug Research and Development, 2405 Wesbrook Mall - 4th Floor, Vancouver, BC, V6T 1Z3, Canada
| | - M Gleave
- Department of Urologic Sciences and Vancouver Prostate Centre, University of British Columbia, Vancouver, BC, V6H 3Z6, Canada
| | - M Bally
- Experimental Therapeutics, BC Cancer Agency, Vancouver, BC, V5Z 4E6, Canada
| | - S J Jones
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver, BC, V5Z 4E6, Canada
- Interdisciplinary Oncology Program, University of British Columbia, Vancouver, Canada
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada
| | - S M Gorski
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver, BC, V5Z 4E6, Canada.
- Interdisciplinary Oncology Program, University of British Columbia, Vancouver, Canada.
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada.
| | - R N Young
- Department of Chemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada.
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175
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Ji Y, Yang K, Peng S, Chen S, Xiang B, Xu Z, Li Y, Wang Q, Wang C, Xia C, Li L, Liu X, Lu G, Yang G, Wu H. Kaposiform haemangioendothelioma: clinical features, complications and risk factors for Kasabach-Merritt phenomenon. Br J Dermatol 2018; 179:457-463. [PMID: 29603128 PMCID: PMC11032113 DOI: 10.1111/bjd.16601] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/02/2018] [Indexed: 02/05/2023]
Abstract
BACKGROUND Few studies have reported the clinical features, complications and predictors of Kasabach-Merritt phenomenon (KMP) associated with Kaposiform haemangioendothelioma (KHE). OBJECTIVES To determine the clinical characteristics present at diagnosis and to identify features that may aid clinicians in managing KHE. METHODS We conducted a cohort study of 146 patients diagnosed with KHE. RESULTS KHE precursors or lesions were present at birth in 52·1% of patients. In 91·8% of patients, lesions developed within the first year of life. The median age at diagnosis of KHE was 2·3 months (interquartile range 1·0-6·0). The extremities were the dominant location, representing 50·7% of all KHEs. Among KHEs in the cohort, 63·0% were mixed lesions (cutaneous lesions with deep infiltration). Approximately 70% of patients showed KMP. A KHE diagnosis was delayed by ≥ 1 month in 65·7% of patients with KMP. Patients with KMP were more likely to have major complications than patients without KMP (P = 0·023). Young age (< 6 months), trunk location, large lesion size (> 5·0 cm) and mixed lesion type were associated with KMP in a univariate analysis. In the multivariate analysis, only age [odds ratio (OR) 11·9, 95% confidence interval (CI) 4·07-34·8; P < 0·001], large lesion size (OR 5·08, 95% CI 2·24-11·5; P < 0·001) and mixed lesion type (OR 2·96, 95% CI 1·23-7·13; P = 0·016) were associated with KMP. CONCLUSIONS Most KHEs appeared before 12 months of age. KHEs are associated with various major complications, which can occur in combination and develop early in the disease process. Young age, large lesion size and mixed lesion type are important predictors of KMP.
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Affiliation(s)
- Y Ji
- Division of Oncology, Department of Pediatric Surgery, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - K Yang
- Division of Oncology, Department of Pediatric Surgery, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - S Peng
- Division of Oncology, Department of Pediatric Surgery, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - S Chen
- Pediatric Intensive Care Unit, Department of Critical Care Medicine, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - B Xiang
- Division of Oncology, Department of Pediatric Surgery, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Z Xu
- Division of Oncology, Department of Pediatric Surgery, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Y Li
- Division of Oncology, Department of Pediatric Surgery, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Q Wang
- Division of Oncology, Department of Pediatric Surgery, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - C Wang
- Division of Oncology, Department of Pediatric Surgery, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - C Xia
- Department of Radiology, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - L Li
- Laboratory of Pathology, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - X Liu
- Department of Vascular and Interventional Radiology, Chengdu Women and Children's Central Hospital, Chengdu, 610031, China
| | - G Lu
- Pediatric Intensive Care Unit, West China Second University Hospital, Sichuan University, Chengdu, 610041, China
| | - G Yang
- Division of Oncology, Department of Pediatric Surgery, West China Hospital of Sichuan University, Chengdu, 610041, China
- Department of Pediatric Surgery, Chengdu Shangjin Nanhu Hospital, Chengdu, 611730, China
| | - H Wu
- Vascular Biology Program and Department of Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA, 02115, U.S.A
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176
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Fouhse J, Yang K, Li J, Mills E, Ju T, Alvarado CS, Chan CB, Willing BP. Establishing a model for childhood obesity in adolescent pigs. Obes Sci Pract 2018; 4:396-406. [PMID: 30151234 PMCID: PMC6105703 DOI: 10.1002/osp4.273] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 03/27/2018] [Accepted: 04/01/2018] [Indexed: 01/23/2023] Open
Abstract
OBJECTIVE Rising worldwide prevalence of obesity and metabolic diseases in children has accentuated the importance of developing prevention and management strategies. The objective of this study was to establish a model for childhood obesity using high-fat feeding of adolescent pigs, as pigs have a longer developmental period and are physiologically more similar to humans than rodents. METHODS Crossbred pigs were fed a high-fat diet (HFD) or low-fat diet (n = 6/treatment) from postnatal day 49 to 84. On postnatal day 84, an oral glucose tolerance test was performed, jugular blood sampled to determine lipopolysaccharide levels and plasma lipids, intestinal digesta collected to characterize microbial and metabolite composition and back fat and intestinal tissue assayed for gene expression. RESULTS Five-week HFD increased weight gain and back fat thickness, caused dyslipidaemia and impaired glucose tolerance and increased expression of genes in back fat suggesting inflammation. HFD pigs had distinct proximal colon microbiota with 48% reduction (P < 0.05) in Bacteroidetes and increased expression of pro-inflammatory genes interleukin-18 and tumour necrosis factor in ileum (P < 0.05). CONCLUSIONS These findings indicate that adolescent pigs should be considered a suitable model for childhood obesity, because short-term HFD feeding is sufficient to induce obesity and glucose intolerance, recapitulating disease characteristics in adolescent pigs.
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Affiliation(s)
- J. Fouhse
- Department of Agriculture, Food and Nutritional ScienceUniversity of AlbertaEdmontonABCanada
| | - K. Yang
- Department of Agriculture, Food and Nutritional ScienceUniversity of AlbertaEdmontonABCanada
| | - J. Li
- Department of Agriculture, Food and Nutritional ScienceUniversity of AlbertaEdmontonABCanada
| | - E. Mills
- Department of Agriculture, Food and Nutritional ScienceUniversity of AlbertaEdmontonABCanada
| | - T. Ju
- Department of Agriculture, Food and Nutritional ScienceUniversity of AlbertaEdmontonABCanada
| | - C. S. Alvarado
- Department of Agriculture, Food and Nutritional ScienceUniversity of AlbertaEdmontonABCanada
| | - C. B. Chan
- Department of Agriculture, Food and Nutritional ScienceUniversity of AlbertaEdmontonABCanada
- Department of PhysiologyUniversity of AlbertaEdmontonABCanada
| | - B. P. Willing
- Department of Agriculture, Food and Nutritional ScienceUniversity of AlbertaEdmontonABCanada
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177
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Yang K, Li BY, Li JL. [Ovarian metastasis of small cell lung cancer from left upper lobe: a case report]. Zhonghua Zhong Liu Za Zhi 2018; 40:473-474. [PMID: 29936776 DOI: 10.3760/cma.j.issn.0253-3766.2018.06.014] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- K Yang
- Department of Medical Oncology, Cancer Hospital of HuanXing Beijing 100065 China
| | - B Y Li
- Department of Medical Oncology, Cancer Hospital of HuanXing Beijing 100065 China
| | - J L Li
- Department of Medical Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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178
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Wang W, Yang R, Zhang F, Yuan B, Yang K, Ma Y. Partner-facilitating transmembrane penetration of nanoparticles: a biological test in silico. Nanoscale 2018; 10:11670-11678. [PMID: 29897087 DOI: 10.1039/c8nr01204k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Transmembrane penetration of nanoparticles (NPs) promises an effective pathway for cargo delivery into cells, and offers the possibility of organelle-specific targeting for biomedical applications. However, a full understanding of the underlying NP-membrane interaction mechanism is still lacking. In this work, the membrane penetration behavior of NPs is statistically analyzed based on the simulations of over 2.2 ms, which are performed with dissipative particle dynamics (DPD). Influences from multiple factors including the NP concentration, shape and surface chemistry are taken into account. It is interesting to find that, the introduction of a partner NP would greatly facilitate the transmembrane penetration of a host spherical NP. This is probably due to the membrane-mediated cooperation between the NPs. Moreover, the proper selection of a partner NP with specific surface chemistry is of great significance. For example, the best partner for a hydrophilic NP to achieve transmembrane penetration is a Janus-like one, in comparison with the hydrophilic, hydrophobic or randomly surface-decorated NPs. Furthermore, such a partner-facilitating effect in NP translocation also works for a shaped NP although less pronounced. Our results are helpful for a better understanding of the complicated nano-bio interactions, and offer a practical guide to the NP-based drug delivery strategy with high efficiency.
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Affiliation(s)
- W Wang
- Center for Soft Condensed Matter Physics and Interdisciplinary Research, Soochow University, Suzhou, 215006, P. R. China.
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179
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Lin WV, Kruse RL, Yang K, Musher DM. Diagnosis and management of pulmonary infection due to Rhodococcus equi. Clin Microbiol Infect 2018; 25:310-315. [PMID: 29777923 DOI: 10.1016/j.cmi.2018.04.033] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [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: 01/28/2018] [Revised: 04/10/2018] [Accepted: 04/28/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND Rhodococcus equi is a recognized cause of disease in humans, especially in individuals who are immunocompromised. Because diphtheroids are regarded as part of normal respiratory flora, the importance of R. equi as a pulmonary pathogen may not be fully appreciated and its prevalence may be underestimated. Most treatment recommendations for R. equi infection were established before antiretroviral drugs became available for human immunodeficiency virus/AIDS therapy, and therapeutic strategies may need to be updated. OBJECTIVES To review the role of R. equi as a cause of pulmonary infection; to highlight its importance for clinicians and microbiologists; and to challenge current approaches to treatment, whether in immunodeficient or immunocompetent individuals. SOURCES A PubMed search using combinations of the following terms: 'Rhodococcus (automatically including Corynebacterium) equi' AND 'pneumonia' OR 'pulmonary' infection, then cross-checking references in the resulting cases, case series and reviews. CONTENT We provide a review that details the challenges in the diagnosis, microbiology and pathogenesis of pulmonary infection caused by R. equi and the options for treatment. IMPLICATIONS Ten to 14 days of treatment may be effective for pneumonia due to R. equi. Our review suggests that longer courses of therapy are needed for cavitary lesions and lung masses. However, recommendations for excessively prolonged treatment of all pulmonary infections arose during a time when many cases occurred in individuals with AIDS and before effective antiretroviral therapy was available. We suggest that the rationale for prolonged therapy with multiple antibiotics needs to be re-evaluated.
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Affiliation(s)
- W V Lin
- Baylor College of Medicine, Houston, TX, USA
| | - R L Kruse
- Baylor College of Medicine, Houston, TX, USA
| | - K Yang
- Baylor College of Medicine, Houston, TX, USA
| | - D M Musher
- Baylor College of Medicine, Houston, TX, USA; Infectious Disease Section, Michael E. DeBakey Veterans Affairs Medical Center, Houston, TX, USA.
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180
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De Bardi M, Müller R, Grünzweig C, Mannes D, Boillat P, Rigollet M, Bamberg F, Jung TA, Yang K. On the needle clogging of staked-in-needle pre-filled syringes: Mechanism of liquid entering the needle and solidification process. Eur J Pharm Biopharm 2018; 128:272-281. [PMID: 29730259 DOI: 10.1016/j.ejpb.2018.05.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 05/02/2018] [Accepted: 05/02/2018] [Indexed: 11/26/2022]
Abstract
Staked-in-needle prefilled syringes (SIN-PFS) are widely used for the parenteral administration of drug product solutions. During stability studies, clogging of the injection needle was observed in syringes filled with concentrated antibody solution. A prerequisite for this phenomenon is that liquid has entered the needle. In this study, we characterized the mechanism causing the entry and movement of liquid in the needle using neutron imaging without manipulating the container closure integrity of the syringe. The gas pressure difference between inside and outside of the syringe was identified as the major cause of liquid movement. The influence of external factors, such as temperature fluctuation and physical pressure on the stopper, were tested and were confirmed to have a relevant impact on the processes of liquid entering and moving inside the injection needle. In a second step, the solidification process of the liquid segments inside the needle via solvent evaporation was further investigated, and the process was found to be dependent on storage time, environmental climate and interaction between the drug product solution and the needle surface. The presence of air/liquid segments was identified as a further factor for the stochastic behavior of needle clogging. For the first time, this fundamental mechanism behind the needle clogging issue was investigated in depth and the results will help to reduce the defect rate for clogged SIN-PFS products.
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Affiliation(s)
- M De Bardi
- F. Hoffmann - La Roche, Grenzacherstrasse 124, 4070 Basel (CH), Switzerland; University of Basel, Physics Department, Klingelbergstrasse 82, 4056 Basel (CH), Switzerland
| | - R Müller
- F. Hoffmann - La Roche, Grenzacherstrasse 124, 4070 Basel (CH), Switzerland
| | - C Grünzweig
- Paul Scherrer Institute, 5232 Villigen (CH), Switzerland
| | - D Mannes
- Paul Scherrer Institute, 5232 Villigen (CH), Switzerland
| | - P Boillat
- Paul Scherrer Institute, 5232 Villigen (CH), Switzerland
| | - M Rigollet
- F. Hoffmann - La Roche, Grenzacherstrasse 124, 4070 Basel (CH), Switzerland
| | - F Bamberg
- F. Hoffmann - La Roche, Grenzacherstrasse 124, 4070 Basel (CH), Switzerland
| | - T A Jung
- University of Basel, Physics Department, Klingelbergstrasse 82, 4056 Basel (CH), Switzerland; Paul Scherrer Institute, 5232 Villigen (CH), Switzerland
| | - K Yang
- F. Hoffmann - La Roche, Grenzacherstrasse 124, 4070 Basel (CH), Switzerland.
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181
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Lin J, Chen S, Li J, Zhu Q, Yang K, Tang L, Wu W, Fu W, Xu J. 1249 The treatment of acral vitiligo with autologous cultured epidermal grafts. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1264] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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182
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Shin Y, Byun J, Ahn S, Yang K, Cho Y, Shin W. 0554 Efficacy Of Dental Device For Treatment For Moderate To Severe Obstructive Sleep Apnea In Korean: Interim Result Of Prospective Multi-center Study. Sleep 2018. [DOI: 10.1093/sleep/zsy061.553] [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)
- Y Shin
- Kyung-Hee University Hospital at Gangdong, Seoul, KOREA, REPUBLIC OF
| | - J Byun
- Kyung-Hee University Hospital at Gangdong, Seoul, KOREA, REPUBLIC OF
| | - S Ahn
- Kyung-Hee University Hospital at Gangdong, Seoul, KOREA, REPUBLIC OF
| | - K Yang
- SOON CHUN HYANG University Hospital Cheonan, Cheonan, KOREA, REPUBLIC OF
| | - Y Cho
- Keimyung University Dongsan Medical Center, Daegu, KOREA, REPUBLIC OF
| | - W Shin
- Kyung-Hee University Hospital at Gangdong, Seoul, KOREA, REPUBLIC OF
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183
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Yang K, Sunwoo J, Hwangbo Y, Kim W, Chu M, Yun C. 0507 Prevalence, Sleep Characteristics, And Comorbidity Of High Risk For Obstructive Sleep Apnea: A Nationwide Questionnaire Study In South Korea. Sleep 2018. [DOI: 10.1093/sleep/zsy061.506] [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: 11/13/2022] Open
Affiliation(s)
- K Yang
- Sleep Disorders Center, Department of Neurology, Soonchunhyang University College of Medicine, Cheonan Hospital, Cheonan, KOREA, REPUBLIC OF
| | - J Sunwoo
- Department of Neurology, Soonchunhyang University College of Medicine, Seoul Hospital, Seoul, KOREA, REPUBLIC OF
| | - Y Hwangbo
- Department of Preventive Medicine, Soonchunhyang University College of Medicine, Cheonan, KOREA, REPUBLIC OF
| | - W Kim
- Department of Neurology, Gangnam Severance Hospital, Yonsei University, College of Medicine, Seoul, KOREA, REPUBLIC OF
| | - M Chu
- Department of Neurology, Hallym University College of Medicine, Seoul, KOREA, REPUBLIC OF
| | - C Yun
- Department of Neurology, Bundang Clinical Neuroscience Center, Seoul National University Bundang Hospital, Seongnam, KOREA, REPUBLIC OF
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184
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Graves LY, Imes CC, Morris JL, Williams E, Yang K, Chasens ER. 0967 Sleep Duration in Older Adult Men Predictive of Depression. Sleep 2018. [DOI: 10.1093/sleep/zsy061.966] [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)
- L Y Graves
- University of Pittsburgh, Pittsburgh, PA
| | - C C Imes
- University of Pittsburgh, Pittsburgh, PA
| | - J L Morris
- University of Pittsburgh, Pittsburgh, PA
| | - E Williams
- University of Pittsburgh, Pittsburgh, PA
| | - K Yang
- Rutgers, The State University of New Jersey, Newark, NJ
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185
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Williams ET, Yang K, Graves L, Chasens E. 0723 Predictors of Abnormal Sleep Duration in Older Adults With Arthritis. Sleep 2018. [DOI: 10.1093/sleep/zsy061.722] [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)
| | - K Yang
- Rutgers University The State University of New Jersey, Newark, NJ
| | - L Graves
- University of Pittsburgh, Pittsburgh, PA
| | - E Chasens
- University of Pittsburgh, Pittsburgh, PA
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186
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You K, Bendl R, Taut C, Sullivan R, Gachabayov M, Bergamaschi R, Connolly TM, Yang K, Giuratrabocchetta S, Denoya PI, Zawin M, Ferretti J, Baer A, Wertheim W. Randomized clinical trial of elective resection versus observation in diverticulitis with extraluminal air or abscess initially managed conservatively. Br J Surg 2018; 105:971-979. [DOI: 10.1002/bjs.10868] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 02/26/2018] [Accepted: 03/02/2018] [Indexed: 11/09/2022]
Abstract
Abstract
Background
The aim of this RCT was to determine whether elective resection following successful non-operative management of a first episode of acute sigmoid diverticulitis complicated by extraluminal air with or without abscess is superior to observation in terms of recurrence rates.
Methods
This was a single-centre, sequential design RCT. Patients were randomized to elective surgery or observation following non-operative management and colonoscopy. Non-operative management included nil by mouth, intravenous fluids, intravenous antibiotics, CT with intravenous contrast on arrival at hospital, and repeat CT with intravenous and rectal contrast on day 3 in hospital. The primary endpoint was recurrent diverticulitis at 24 months. Patients with a history of sigmoid diverticulitis, immunosuppression or peritonitis were not included.
Results
Of 137 screened patients, 107 were assigned randomly to elective surgery (26) or observation (81), and underwent the allocated intervention after successful non-operative management. Conservative management failed in 15 patients. Groups were similar in age, sex, BMI, co-morbidities and colorectal POSSUM. Rates of recurrent diverticulitis differed significantly in the elective surgery and observation groups (8 versus 32 per cent; P = 0·019) at a mean(s.d.) follow-up of 37·8(8·6) and 35·2(9·2) months respectively. There was also a significant difference in time to recurrence (median 11 versus 7 months; P = 0·015). A total of 28 patients presented with recurrent diverticulitis complicated by extraluminal air and/or abscess (2 elective surgery, 26 observation), all of whom recovered with repeat non-operative management.
Conclusion
The majority of patients observed following conservative management of diverticulitis with local extraluminal air do not require elective surgery. Registration number: NCT01986686 (http://www.clinicaltrials.gov).
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Affiliation(s)
- K You
- Division of Colon and Rectal Surgery, State University of New York, Stony Brook, New York, USA
| | - R Bendl
- Division of Colon and Rectal Surgery, State University of New York, Stony Brook, New York, USA
| | - C Taut
- Division of Colon and Rectal Surgery, State University of New York, Stony Brook, New York, USA
| | - R Sullivan
- Division of Colon and Rectal Surgery, State University of New York, Stony Brook, New York, USA
| | - M Gachabayov
- Division of Colon and Rectal Surgery, State University of New York, Stony Brook, New York, USA
| | - R Bergamaschi
- Division of Colon and Rectal Surgery, State University of New York, Stony Brook, New York, USA
| | - T M Connolly
- Division of Colon and Rectal Surgery, State University of New York
| | - K Yang
- Division of Colon and Rectal Surgery, State University of New York
| | | | - P I Denoya
- Division of Colon and Rectal Surgery, State University of New York
| | - M Zawin
- Department of Radiology, State University of New York
| | - J Ferretti
- Division of Interventional Radiology, State University of New York
| | - A Baer
- Department of Emergency Medicine, State University of New York
| | - W Wertheim
- Department of Medicine, State University of New York
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187
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Zhao Y, Yang K, Li J, Zhu S. Comparison between the prechopping method with a reverse chopper and the routine stop-and-chop method in treating cataract with grade IV hard nucleus. J Fr Ophtalmol 2018; 41:315-320. [PMID: 29673631 DOI: 10.1016/j.jfo.2017.11.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 11/21/2017] [Indexed: 10/17/2022]
Abstract
The aim of this study was to compare the safety and efficacy between the prechopping method using a Reverse Chopper (iHPC) and the routine stop-and-chop (RSC) method in phacoemulsification of cataracts with grade IV hard nuclei (HNC (≥IV)). A total of 32 patients (32 eyes) scheduled for Phaco combined with intraocular lens (Phaco-IOL) for HNC (≥IV) from March 2015 to January 2016 were enrolled and randomly divided into two groups (the iHPC group, n=16 and the RSC group, n=16) so as to compare the effective intraoperative Phaco time, corneal edema 1-3 days after surgery, best corrected visual acuity (BCVA), and rate of loss of corneal endothelial cells (CECs) 1 month after surgery. The effective intraoperative Phaco time in the iHPC group was shorter (42.56s vs. 78.63s, P=0.000), the degree of corneal edema 1-3 days after surgery was less (P<0.01), the ratio of cases with BCVA>0.6 was higher, and the CEC loss rate was lower (13.36±2.85% vs. 25.77±3.81%, P=0.000). Compared with RSC, iHPC can reduce CEC injury in Phaco surgery, and the patients can recover their vision faster.
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Affiliation(s)
- Y Zhao
- Beijing Tongren eye center, Beijing keynote laboratory of ophthalmology and visual science, Beijing Tongren hospital affiliated to capital medical university, 100730 Beijing, China
| | - K Yang
- Beijing Tongren eye center, Beijing keynote laboratory of ophthalmology and visual science, Beijing Tongren hospital affiliated to capital medical university, 100730 Beijing, China
| | - J Li
- Medical school, Pingdingshan university, 467000 Pingdingshan, China
| | - S Zhu
- Beijing Tongren eye center, Beijing keynote laboratory of ophthalmology and visual science, Beijing Tongren hospital affiliated to capital medical university, 100730 Beijing, China.
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188
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Yang K, Ganguli S, DeLorenzo M, Zheng H, Li X, Liu B. 3:45 PM Abstract No. 76 Procedure-specific complexity factors based on dose metric distributions for CT-guided interventional procedures. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.088] [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] Open
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189
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Yang K, Li Y, Mao Z, Liu X, Zhang H, Liu R, Xue Y, Tu R, Liu X, Zhang X, Li W, Wang C. Relationship between spicy flavor, spicy food intake frequency, and general obesity in a rural adult Chinese population: The RuralDiab study. Nutr Metab Cardiovasc Dis 2018; 28:252-261. [PMID: 29289573 DOI: 10.1016/j.numecd.2017.10.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 10/16/2017] [Accepted: 10/22/2017] [Indexed: 12/20/2022]
Abstract
BACKGROUND AND AIMS The purpose of this study was to explore the association between spicy flavor, spicy food frequency, and general obesity in Chinese rural adults. METHODS AND RESULTS A total of 15,683 subjects (5907 males, 9776 females) aged 35-74 years from the RuralDiab Study were recruited for this cross-sectional study. Analysis of covariance was used to determine the differences of participant characteristics across body mass index (BMI) categories. Logistic regression yielded adjusted odds ratios (ORs) and 95% confidence intervals (CIs) for obesity associated with the level of spicy flavor and frequency of spicy food intake. A meta-analysis was conducted to validate the result of the cross-sectional study. The crude and standardized prevalence of obesity were 16.78% and 17.57%, respectively. Compared with No spicy flavor, the adjusted ORs (95% CIs) of Mild, Middle, and Heavy spicy flavor for obesity were 1.232 (1.117-1.359), 1.463 (1.290-1.659), and 1.591 (1.293-1.958), respectively (Ptrend < 0.001). Similarly, compared with no spicy food consumption, the adjusted ORs (95% CIs) of 1 or 2 days/week, 3-5 days/week, and 6 or 7 days/week were 1.097 (0.735-1.639), 1.294 (0.932-1.796), and 1.250 (1.025-1.525), respectively (Ptrend = 0.026). The point estimate and 95% CI of mean BMI difference between the spicy food consuming group and spicy food non-consuming group was 0.37 (95% CI: 0.30-0.44) in the meta-analysis. CONCLUSION The data indicated that spicy flavor and spicy food frequency were positively associated with general obesity in Chinese rural populations.
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Affiliation(s)
- K Yang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Y Li
- Department of Clinical Pharmacology, School of Pharmaceutical Science, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Z Mao
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - X Liu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - H Zhang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - R Liu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Y Xue
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - R Tu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - X Liu
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - X Zhang
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - W Li
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - C Wang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China.
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Snider CA, Yang K, Mack SC, Suh JH, Chao ST, Merchant TE, Murphy ES. Impact of radiation therapy and extent of resection for ependymoma in young children: A population-based study. Pediatr Blood Cancer 2018; 65. [PMID: 29115718 DOI: 10.1002/pbc.26880] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 09/29/2017] [Accepted: 10/02/2017] [Indexed: 11/09/2022]
Abstract
BACKGROUND Young children with posterior fossa ependymoma (PF-EPN) have a worse prognosis than older children, and they have a unique molecular profile (PF-EPN-A subtype). Alternative treatment strategies are often used in these young patients, and their prognostic factors are less clear. METHODS We characterized the prognostic factors and treatment outcomes of 482 patients between ages 0 and 3 years with the diagnosis of ependymoma identified from the Surveillance, Epidemiology, and End Results registry (1973-2013). RESULTS Radiation therapy (RT) was delivered to 52.3% of patients, and gross total resection (GTR) was performed in 51.0% of patients. Overall survival (OS) at 10 years was 48.4% with median follow-up of 3.3 years. WHO grade was not predictive of OS. Extent of resection was significant for survival; the 10-year OS with GTR was 61.0%, and with subtotal resection (STR) and biopsy was 38.2% and 35.0%, respectively (P < 0.001). RT significantly benefitted OS for both grades II and III. The 10-year OS for grade II was 50.5% with RT and 43.4% without (P = 0.030); 10-year OS for grade III was 66.0% with RT and 40.0% without (P = 0.002). Multivariate analysis showed significantly improved OS with RT (hazard ratio [HR] 0.601, 95% CI: 0.439-0.820, P = 0.001) and GTR (HR 0.471, 95% CI: 0.328-0.677, P < 0.0001). CONCLUSIONS Ependymoma outcomes in patients within 0-3 years of age significantly improved with RT and GTR. Histopathologic grading of ependymoma demonstrated no prognostic significance. Given the poor OS for this population and unique genetic profile, future prospective studies with molecular-based stratification should be performed to evaluate additional prognostic factors.
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Affiliation(s)
- C A Snider
- Cleveland Clinic Lerner College of Medicine, Cleveland, Ohio
| | - K Yang
- Cleveland Clinic Lerner College of Medicine, Cleveland, Ohio.,Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic, Cleveland, Ohio
| | - S C Mack
- Department of Stem Cell Biology and Regenerative Medicine, Cleveland Clinic, Cleveland, Ohio
| | - J H Suh
- Department of Radiation Oncology, Cleveland Clinic, Cleveland, Ohio
| | - S T Chao
- Department of Radiation Oncology, Cleveland Clinic, Cleveland, Ohio
| | - T E Merchant
- Department of Radiological Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - E S Murphy
- Department of Radiation Oncology, Cleveland Clinic, Cleveland, Ohio
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191
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Han L, Zhang Y, Wang Q, Xin M, Yang K, Lei K, Sun M. Epstein-Barr virus infection and type I interferon signature in patients with systemic lupus erythematosus. Lupus 2018; 27:961203317753069. [PMID: 29338588 DOI: 10.1177/0961203317753069] [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: 12/15/2022]
Abstract
Epstein-Barr (EB) virus infection has long been speculated to evoke systemic lupus erythematosus (SLE). Since a virus infection can induce interferon (IFN) system activation, we aimed to discover the relationship between the two in the progression of SLE in a Chinese inpatient cohort. Methods Peripheral blood mononuclear cells and sera were isolated from 116 SLE patients and 76 healthy controls. Antibodies against EBV-VCA (IgM and IgG) and EBNA (IgG) along with IFNα in patient sera were detected with enzyme-linked immunosorbent assays. The EB virus DNA load was detected by real-time quantitative polymerase chain reaction. Peripheral blood mononuclear cells both from patients and controls were isolated immediately. The mRNA from these samples was subjected to real-time PCR for the latent genes EBNA1, EBNA2 and LMP1 of EB virus, as well as four IFN-stimulated genes (ISGs) ( OASL, MX1, ISG15 and LY6E). The antibody results were used to determine the stage of EBV infection (lytic, latent, or previous). Results SLE patients had a higher rate of lytic infection defined as positive EBV-VCA IgM antibody (39.66% vs 10.53%, p = 0.027), but not the EB virus DNA load. Patients with lytic EB virus infection had higher SLEDAI scores than patients with non-lytic infection (15.24 ± 2.63 vs 13.79 ± 3.24, p = 0.012). LMP1 was the only EBV gene that had a higher expression level in SLE patients than in healthy controls (3.26 ± 2.95 vs 1.00 ± 2.89, p = 0.000). It was also positively correlated with SLEDAI scores ( r = 0.462, p = 0.000). Levels of IFNα and the four ISGs were all significantly higher in SLE patients than in healthy controls ( p < 0.05). LMP1 was positively correlated with the four ISGs ( r = 0.403 ∼ 0.494, p < 0.05) in SLE patients but not in healthy controls ( r = -0.153 ∼ 0.129, p > 0.05). Neither EBNA1 nor EBNA2 was correlated with the ISGs in SLE patients or in healthy controls. Conclusions The SLE patients had higher rates of lytic EB virus infection and higher latent gene LMP1 expression, which might be associated with the development and/or the progression of SLE via the type I IFN pathway. The underlying mechanism needs more study.
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Affiliation(s)
- L Han
- 1 Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Y Zhang
- 2 Shandong University Qilu Hospital (Qingdao Branch), Qingdao, Shandong, China
| | - Q Wang
- 1 Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - M Xin
- 1 Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - K Yang
- 1 Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - K Lei
- 1 Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - M Sun
- 1 Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
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192
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Hou C, Ping Z, Yang K, Chen S, Liu X, Li H, Liu M, Ma Y, Van Halm-Lutterodt N, Tao L, Luo Y, Yang X, Wang W, Li X, Guo X. Trends of Activities of Daily Living Disability Situation and Association with Chronic Conditions among Elderly Aged 80 Years and Over in China. J Nutr Health Aging 2018; 22:439-445. [PMID: 29484359 DOI: 10.1007/s12603-017-0947-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [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: 12/01/2022]
Abstract
OBJECTIVES In China, few studies reported the disability situation and the association between disabilities with chronic conditions in aged people. This study investigates the cross-sectional trends of prevalence and severity of activities of daily living disability (ADL) in Chinese oldest-old people from 1998 to 2008, and identified the potential risk factors of disability. DESIGN A combination of population-based longitudinal prospective study and probabilistically sampling cross-sectional studies. SETTING The Chinese Longitudinal Healthy Longevity Survey (CLHLS) was based on a random sampling of aged people from twenty-two provinces in China. PARTICIPANTS A total of 52,667 participants aged from 80 years old to 105 years old sampled in the year of 1998 (n=8,768), 2000 (n=10,940), 2002 (n=10,905), 2005 (n=10,396) and 2008 (n=11,658) were analyzed respectively. RESULTS The prevalence of ADL disability decreased from the year of 1998 (18%) to 2008 (12%). The disability prevalence significantly increased in 2002 and decreased in 2008 (P<0.001) in total participants than the year of 1998. The prevalence trends of low ADL disability level were almost identical with that of the total ADL disability. Stroke/cerebrovascular disease (CVD) and cognitive impairment were the strongest risk factors of disability. Vision impairment became less associated with ADL disability (P=0.045), while the association between multimorbidity and ADL disability became stronger (P=0.033). CONCLUSIONS The prevalence of ADL disability declined among the oldest-old population in China from the year of 1998 to 2008 without obeying a linear pattern. Temporal trends of ADL disability mainly attributed to the change of low disability level prevalence. Stroke/CVD and cognitive impairment were the most common risk factors of disability. Vision impairment caused disability has become less common, while risks of multimorbidity related disability increased.
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Affiliation(s)
- C Hou
- Xiuhua Guo, PhD, Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, Beijing, 100069, China. E-mail:
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193
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Hao Q, Yang K, Cheng X, Guo Y, Fang C, Ding MD, Chen PF, Li Z. A circular white-light flare with impulsive and gradual white-light kernels. Nat Commun 2017; 8:2202. [PMID: 29259174 PMCID: PMC5736556 DOI: 10.1038/s41467-017-02343-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 11/22/2017] [Indexed: 11/16/2022] Open
Abstract
White-light flares are the flares with emissions visible in the optical continuum. They are thought to be rare and pose the most stringent requirements in energy transport and heating in the lower atmosphere. Here we present a nearly circular white-light flare on 10 March 2015 that was well observed by the Optical and Near-infrared Solar Eruption Tracer and Solar Dynamics Observatory. In this flare, there appear simultaneously both impulsive and gradual white-light kernels. The generally accepted thick-target model would be responsible for the impulsive kernels but not sufficient to interpret the gradual kernels. Some other mechanisms including soft X-ray backwarming or downward-propagating Alfvén waves, acting jointly with electron beam bombardment, provide a possible interpretation. However, the origin of this kind of white-light kernel is still an open question that induces more observations and researches in the future to decipher it.
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Affiliation(s)
- Q Hao
- School of Astronomy and Space Science, Nanjing University, Nanjing, 210023, China.
- Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing, 210093, China.
| | - K Yang
- School of Astronomy and Space Science, Nanjing University, Nanjing, 210023, China
- Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing, 210093, China
| | - X Cheng
- School of Astronomy and Space Science, Nanjing University, Nanjing, 210023, China
- Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing, 210093, China
| | - Y Guo
- School of Astronomy and Space Science, Nanjing University, Nanjing, 210023, China
- Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing, 210093, China
| | - C Fang
- School of Astronomy and Space Science, Nanjing University, Nanjing, 210023, China.
- Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing, 210093, China.
| | - M D Ding
- School of Astronomy and Space Science, Nanjing University, Nanjing, 210023, China.
- Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing, 210093, China.
| | - P F Chen
- School of Astronomy and Space Science, Nanjing University, Nanjing, 210023, China
- Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing, 210093, China
| | - Z Li
- School of Astronomy and Space Science, Nanjing University, Nanjing, 210023, China
- Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing, 210093, China
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194
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Heuer V, Inagaki F, Morono Y, Kubo Y, Maeda L, Bowden S, Cramm M, Henkel S, Hirose T, Homola K, Hoshino T, Ijiri A, Imachi H, Kamiya N, Kaneko M, Lagostina L, Manners H, McClelland HL, Metcalfe K, Okutsu N, Pan D, Raudsepp M, Sauvage J, Schubotz F, Spivack A, Tonai S, Treude T, Tsang MY, Viehweger B, Wang D, Whitaker E, Yamamoto Y, Yang K. Expedition 370 summary. Proceedings of the International Ocean Discovery Program 2017. [DOI: 10.14379/iodp.proc.370.101.2017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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195
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Feng D, Wang Y, Liu Y, Wu L, Li X, Chen Y, Chen Y, Chen Y, Xu C, Yang K, Zhou T. DC-SIGN reacts with TLR-4 and regulates inflammatory cytokine expression via NF-κB activation in renal tubular epithelial cells during acute renal injury. Clin Exp Immunol 2017; 191:107-115. [PMID: 28898406 DOI: 10.1111/cei.13048] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/06/2017] [Indexed: 12/23/2022] Open
Abstract
In the pathological process of acute kidney injury (AKI), innate immune receptors are essential in inflammatory response modulation; however, the precise molecular mechanisms are still unclear. Our study sought to demonstrate the inflammatory response mechanisms in renal tubular epithelial cells via Toll-like receptor-4 (TLR-4) and dendritic cell-specific intercellular adhesion molecule 3-grabbing non-integrin 1 (DC-SIGN) signalling. We found that DC-SIGN exhibited strong expression in renal tubular epithelial cells of human acute renal injury tissues. DC-SIGN protein expression was increased significantly when renal tubular epithelial cells were exposed to lipopolysaccharide (LPS) for a short period. Furthermore, DC-SIGN was involved in the activation of p65 by TLR-4, which excluded p38 and c-Jun N-terminal kinases (JNK). Interleukin (IL)-6 and tumour necrosis factor (TNF)-α expression was decreased after DC-SIGN knock-down, and LPS induced endogenous interactions and plasma membrane co-expression between TLR-4 and DC-SIGN. These results show that DC-SIGN and TLR-4 interactions regulate inflammatory responses in renal tubular epithelial cells and participate in AKI pathogenesis.
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Affiliation(s)
- D Feng
- Department of Pediatrics, Ruijin Hospital, Shanghai, China
| | - Y Wang
- Institute of Cardiovascular Disease, Ruijin Hospital, Shanghai, China
| | - Y Liu
- Institute of Cardiovascular Disease, Ruijin Hospital, Shanghai, China.,Department of Cardiology, Shanghai Ninth People's Hospital, Shanghai, China
| | - L Wu
- Institute of Cardiovascular Disease, Ruijin Hospital, Shanghai, China
| | - X Li
- Department of Nephrology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Y Chen
- Department of Pediatrics, Ruijin Hospital, Shanghai, China
| | - Y Chen
- Institute of Cardiovascular Disease, Ruijin Hospital, Shanghai, China
| | - Y Chen
- Institute of Cardiovascular Disease, Ruijin Hospital, Shanghai, China
| | - C Xu
- Department of Pediatrics, Ruijin Hospital, Shanghai, China
| | - K Yang
- Institute of Cardiovascular Disease, Ruijin Hospital, Shanghai, China
| | - T Zhou
- Department of Pediatrics, Ruijin Hospital, Shanghai, China
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196
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Fang Y, Yao L, Sun J, Yang R, Chen Y, Tian J, Yang K, Tian L. Does thyroid dysfunction increase the risk of breast cancer? A systematic review and meta-analysis. J Endocrinol Invest 2017; 40:1035-1047. [PMID: 28516372 DOI: 10.1007/s40618-017-0679-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Accepted: 04/24/2017] [Indexed: 12/13/2022]
Abstract
PURPOSE To investigate the relationship between hypothyroidism, hyperthyroidism, thyroid hormone replacement, and the risk of breast cancer. METHODS We searched the PubMed, Cochrane Library, EMbase, Web of Science, and China Biology Medicine (CBM) databases through June 2016 to identify researches that assessed the relationship between thyroid dysfunction and the risk of breast cancer together with the impact of thyroid hormone substitution treatment on incidence of breast cancer. Quality of evidence was assessed per outcome, using GRADE. RESULTS A total of 13 population-based studies including 24,808 participants were identified as eligible for this meta-analysis. A meta-analysis of 12 researches illustrated that hypothyroidism was not related to the risk for breast cancer [odds ratio (OR) = 0.83, 95% confidence interval (CI) 0.64-1.08, P = 0.162]. 10 researches illustrated that hyperthyroidism was also not related to the risk of breast cancer (OR = 1.03, 95% CI 0.83-1.30, P = 0.767). The impact of therapy was evaluated in six researches; there was no proof of a relationship between thyroid hormone substitution treatment and breast cancer with an overall OR of 0.83 (95% CI 0.57-1.21, P = 0.965). CONCLUSIONS Our meta-analysis illustrated that thyroid dysfunction may not be related to increased risk of breast cancer as well as the thyroid hormone substitution treatment did not reduce the incidence of breast cancer; while this study has some confounders that might weaken the results of this meta-analysis, we believe that the findings provide valuable information for stakeholders concerned with outcomes in patients with thyroid dysfunction.
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Affiliation(s)
- Y Fang
- Department of Endocrinology, Gansu Provincial Hospital, Dong gang West Road, Lanzhou, 730000, Gansu, People's Republic of China
| | - L Yao
- Clinical Evidence Based Medicine Center, Gansu Provincial Hospital, Dong gang West Road, Lanzhou, 730000, Gansu, People's Republic of China
| | - J Sun
- Department of Endocrinology, Gansu Provincial Hospital, Dong gang West Road, Lanzhou, 730000, Gansu, People's Republic of China
| | - R Yang
- Department of Endocrinology, Gansu Provincial Hospital, Dong gang West Road, Lanzhou, 730000, Gansu, People's Republic of China
| | - Y Chen
- Evidence Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - J Tian
- Evidence Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - K Yang
- Evidence Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China.
| | - L Tian
- Department of Endocrinology, Gansu Provincial Hospital, Dong gang West Road, Lanzhou, 730000, Gansu, People's Republic of China.
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Ma J, Li Y, Wan C, Huang J, Qin Y, Wu B, Xu S, Yang K, WU G. β-Trcp-mediated Degradation of FOXN2 Promotes Cell Proliferation and Radioresistance of Lung Cancer Cells. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1812] [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: 10/18/2022]
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198
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Yang Q, Liu DP, Li LP, Gu Y, Zhang MX, Liu Y, Yang K. [Establishment and evaluation of noninvasive diagnostic models for liver fibrosis in patients with chronic hepatitis B]. Zhonghua Gan Zang Bing Za Zhi 2017; 25:15-20. [PMID: 28297773 DOI: 10.3760/cma.j.issn.1007-3418.2017.01.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To establish the model of liver fibrosis based on noninvasive indices, and to investigate the diagnostic value of this model. Methods: A total of 838 patients with chronic hepatitis B (CHB) who underwent liver biopsy in our hospital from March 2003 to October 2013 were selected, and the results of blood tests and B-ultrasound were collected. The correlation between these indices and liver fibrosis stage was analyzed. A logistic regression analysis was performed to establish a predictive model, and the value of this model was examined in validation group. The t-test, Mann-Whitney U non-parametric test, and chi-square test were used for data analysis. A Spearman rank correlation analysis was used for bivariate correlation analysis, and a dichotomous logistic stepwise regression analysis was used for multivariate analysis. Results: In the model group, a model (FV) consisting of age, platelet count (PLT), γ-glutamyl transferase (GGT), albumin/globulin ratio (A/G), and splenic square area (SSA) was established. The areas under the receiver operating characteristic curve (AUROCs) of the model FV were 0.892, 0.910, and 0.915, respectively, in diagnosing significant liver fibrosis (S2-4), progressive liver fibrosis (S3-4), and early-stage liver cirrhosis (S4), with sensitivities of 77.6%, 83.7%, and 86.0%, respectively, specificities of 89.7%, 84.5%, and 83.7%, respectively, and accuracy of 82.1%, 84.2%, and 84.2%, respectively. There were no significant differences in AUROCs between the validation group and the model group (Z = 0.360, 0.885, and 0.046, all P > 0.05). In all patients, FV had significantly higher AUROCs in the diagnosis of liver fibrosis than FIB4 index and S index (Z = 4.569/3.423, 5.640/4.709, and 4.652/4.439, all P < 0.05). With < 0.374 and ≥ 0.577 as the cut-off values for the exclusion and diagnosis of significant liver fibrosis, 61.1% (512/838) of all patients could avoid liver biopsy, and the accuracy was 92.6% (474/512). Conclusion: The noninvasive model based on age, PLT, GGT, A/G, and SSA can accurately predict liver fibrosis degree in patients with CHB with good reproducibility; therefore, it can be used for dynamic monitoring of liver fibrosis degree in clinical practice.
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Affiliation(s)
- Q Yang
- Department of Liver Diseases , the Sixth People's Hospital of Shenyang City, Shenyang 110006, China
| | - D P Liu
- Department of Gastroenterology , the First Affiliated Hospital of China Medical University, Shenyang 110001, China
| | - L P Li
- Department of Liver Diseases , the Sixth People's Hospital of Shenyang City, Shenyang 110006, China
| | - Y Gu
- Department of Liver Diseases , the Sixth People's Hospital of Shenyang City, Shenyang 110006, China
| | - M X Zhang
- Department of Liver Diseases , the Sixth People's Hospital of Shenyang City, Shenyang 110006, China
| | - Y Liu
- Department of Cadres Clinic, the Fourth People's Hospital of Shenyang City, Shenyang 110031, China
| | - K Yang
- Department of Liver Diseases , the Sixth People's Hospital of Shenyang City, Shenyang 110006, China
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Chen Y, Liu G, Zhang T, Yang K, Yu H, Tie Y, Liang J, Zhou J, Gan H. Diagnostic yield and safety of double balloon-assisted enteroscopy in the elderly: A systematic review and meta-analysis. Eur Geriatr Med 2017. [DOI: 10.1016/j.eurger.2017.06.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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Zhu C, Yang K, Ye J, Yang J, Wang L, Liang R, Wu X, Chen Z, Jiang Z. 052 Differential expression of intestinal ion transporters and water channel aquaporins in young piglets challenged with enterotoxigenic Escherichia coli K88. J Anim Sci 2017. [DOI: 10.2527/asasann.2017.052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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