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Wu T, Gao YY, Su J, Tang XN, Chen Q, Ma LW, Zhang JJ, Wu JM, Wang SX. Three-dimensional bioprinting of artificial ovaries by an extrusion-based method using gelatin-methacryloyl bioink. Climacteric 2021; 25:170-178. [PMID: 33993814 DOI: 10.1080/13697137.2021.1921726] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
PURPOSE The aim of this study was to design and fabricate a three-dimensional (3D) printed artificial ovary. METHODS We first compared the printability of gelatin-methacryloyl (GelMA), alginate and GelMA-alginate bioinks, of which GelMA was selected for further investigation. The swelling properties, degradation kinetics and shape fidelity of GelMA scaffolds were characterized by equilibrium swelling/lyophilization, collagenase processing and micro-computed tomography evaluation. Commercial ovarian tumor cell lines (COV434, KGN, ID8) and primary culture ovarian somatic cells were utilized to perform cell-laden 3D printing, and the results were evaluated by live/dead assays and TUNEL detection. Murine ovarian follicles were seeded in the ovarian scaffold and their diameters were recorded every day. Finally, in vitro maturation was performed, and the ovulated oocytes were collected and observed. RESULTS Our results indicated that GelMA was suitable for 3D printing fabrication. Its scaffolds performed well in terms of hygroscopicity, degradation kinetics and shape fidelity. The viability of ovarian somatic cells was lower than that of commercial cell lines, suggesting that extrusion-based 3D culture fabrication is not suitable for primary ovarian cells. Nevertheless, the GelMA-based 3D printing system provided an appropriate microenvironment for ovarian follicles, which successfully grew and ovulated in the scaffolds. Metaphase II oocytes were also observed after in vitro maturation. CONCLUSIONS The GelMA-based 3D printing culture system is a viable alternative option for follicular growth, development and transfer. Accordingly, it shows promise for clinical application in the treatment of female endocrine and reproductive conditions.
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Siesener N, Kokabi N, Su J, Peters G, Krishnasamy V, Majdalany B, Newsome J, Bercu Z. Abstract No. 554 Thorough adrenal vein sampling technique decreases procedural fluoroscopy times: results from a large-volume single-institution experience. J Vasc Interv Radiol 2021. [DOI: 10.1016/j.jvir.2021.03.364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Su J, Zhang L, Qiang Y. A FIRST-PRINCIPLES INVESTIGATION
OF HETEROSTRUCTURES CONSISTING OF HALIDE
PEROVSKITE CsPbI3 AND LEAD CHALCOGENIDE
FOR OPTOELECTRONIC APPLICATIONS. J STRUCT CHEM+ 2021. [DOI: 10.1134/s0022476621050024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Qiu Z, Zhang C, Wang H, Fu R, Cai F, Chu X, Liu S, Su J, Wu Y, Zhong W. MA02.08 Computed Tomography Attenuation Value as Considerable Predictor for Malignancy in Clinical T1 Lung Adenocarcinoma. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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80
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Peng L, Li A, Liu S, Sun H, Zheng M, Zhou J, Zhang J, Zhang X, Zhou Q, Zhong W, Yang X, Tu H, Su J, Yan H, Gou L, Gao H, Wu Y. P85.02 NGS could not Replace FISH Regarding to MET Amplification as an Optimal Biomarker. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.1224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Tang W, Wu M, Bao H, Zhang Y, Zhang J, Su J, Lin J, Xu F, Chen J, Fu R, Chen Y, Wu T, Wu X, Shao Y, Dong S, Nie Q, Yang X, Wu Y, Zhong W. MA13.09 Heterogeneous Genomic Evolution and Immune Microenvironments in Metastatic Lung Cancer. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Zhou C, Zheng X, Huang X, Su J, Li M, Chen Z, Li M, Chi H. [ Huangqin decoction alleviates ulcerative colitis by regulating ILC3s-TH cell response]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2021; 41:256-263. [PMID: 33624600 DOI: 10.12122/j.issn.1673-4254.2021.02.14] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
OBJECTIVE To explore the effect of Huangqin decoction (HQD) on group 3 innate lymphoid cells (ILC3s) and helper T cells (Th) for treatment of ulcerative colitis (UC). OBJECTIVE Male Balb/c mice were randomly divided into control group, DSS group, mesalazine group (ME, 400 mg/kg), and 2.275 g/kg, 4.55 g/kg and 9.1 g/kg HQD groups. All the mice were given free access to normal chow. Except for those in the normal control group, all the mice were given 3% DSS solution for 7 days to establish models of UC. The mice in ME group and 3 HQD groups were given mesalazine or HQD via oral gavage at the specified doses once a day. Flow cytometry was performed to analyze the ILC3s, MHC Ⅱ, Th1 and Treg in the lamina propria lymphocytes in the colon. Milliplex was performed to determine cytokine levels of in the colon tissues. OBJECTIVE Compared with those in DSS group, the mice in the 3 HQD groups all showed obviously lessened symptoms of UC with significantl decreased DAI score (P < 0.001) and macroscopic score (P < 0.001). The results of flow cytometry showed that HQD treatment significantly increased the percentage of ILC3s (P < 0.05) and expression of MHCⅡ (P < 0.05), obviously reduced the proportion of Th1 (P < 0.05) but increased Treg cells (P < 0.05) in the colon tissues. Milliplex showed that HQD treatment significantly reduced the expressions of Th-related pro-inflammatory cytokines including IL-2 (P < 0.05), IL-17A (P < 0.05), IL-23 (P < 0.05), TNF-α (P < 0.05), and IFN-γ (P < 0.05). OBJECTIVE HQD alleviates DSS- induced UC in mice by increasing ILC3s and MHC Ⅱ expression to suppress the function of Th17 and Th1 cells and promote Treg and Th2 cells.
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Zhang N, Ding JQ, Wang YP, Liu XN, Li YQ, Liu MF, Fu ZM, Yang YW, Su J, Song GL, Yang F, Guo YY, Liu JM. Enhanced high temperature ferromagnetism in Bi 1-xRxFeO 3( R= Dy, Y) compounds. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33:135803. [PMID: 33527915 DOI: 10.1088/1361-648x/abdb10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 01/12/2021] [Indexed: 06/04/2023]
Abstract
In this work we report experimental evidence for the weak high-temperature ferromagnetism in Bi1-xRxFeO3(R= Dy, Y) compounds by systematic characterizations, excluding the possible side-effects from other iron-based impurities. Remarkable saturated magnetic moment was observed in the Y-substituted samples, Bi1-xYxFeO3, which is larger than the moment obtained in Bi1-xDyxFeO3, the Dy-substituted samples with antiferromagnetic background. The physical origin of the weak ferromagnetic transition is discussed and serious lattice distortions have been identified based on the x-ray diffraction and Raman scattering data, although the rhombohedral structure symmetry remains unchanged upon the substitutions. It is believed that the structural distortion suppressed cycloid spin structure is the main factor for the enhanced magnetization in Bi1-xRxFeO3compounds. Additionally, the Dy3+-Fe3+antiferromagnetic coupling, which strengthens the antiferromagnetic interaction in Bi1-xDyxFeO3compounds, acts as the driving force for the magnetic discrepancy between Bi1-xYxFeO3and Bi1-xDyxFeO3samples.
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Liu Z, Wang T, Zhang K, Wang Y, Wei L, Dai L, Liu B, Wang J, Shi F, Su J, Ma J, Wang R, Yuan W, Li Y, Yuan H, Xue W, Gao C, Liu L. Radiation-induced Vaginal Injury After Treatment for Cervical Cancer. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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85
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Pilar A, Yu E, Su J, Bartlett E, O’Sullivan B, Waldron J, Spreafico A, de Almeida J, Bayley A, Bratman S, Cho J, Giuliani M, Hope A, Hosni A, Kim J, Ringash J, Perez-Ordonez B, Tong L, Xu W, Huang S. Validating and Refining the 8th Edition TNM N-Classification for HPV Negative Oropharyngeal Cancer. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Cozma A, Alfaraj F, Lukovic J, Su J, Xu W, Mierzwa M, Ynoe de Moraes F, Huang S, Bratman S, Giuliani M, Hope A, Kim J, Ringash J, Waldron J, de Almeida J, Goldstein D, Rosko A, Spector M, Kowalski L, Marta G, Hosni A. Development Of A Risk Group Classification To Predict Locoregional Failure And To Quantify The Effect Of Post-Operative Radiotherapy Among Patients With Major Salivary Gland Carcinoma. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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87
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Zhu S, Li Q, LI S, Deng W, Zhao Y, Zhao X, Su J. Clinical Outcomes in Different Irradiation Volume for Esophageal Squamous Cell Carcinoma (ESCC) in Definitive Intensity-Modulated Radiotherapy (IMRT) Combined with Concurrent Chemotherapy. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Li H, Yi P, Su J, Xu C, Cao L, Li M, Chen J. The Role of NRF2 Signaling Regulated by Autophagy Adaptor P62 in Radiation-Induced Myocardial Injury. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Yi P, Li H, Su J, Cao L, Xu C, Li M, Chen J. Early Detection of Trastuzumab and Radiation Induced Cardiotoxicity in Mice Using Echocardiography and PET/CT. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1696] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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90
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Barros M, Röth A, Barcellini W, Tvedt T, Miyakawa Y, Kuter D, Hobbs W, Su J, Jiang X, Arias J, Weitz I. SUTIMLIMAB, A COMPLEMENT C1S INHIBITOR, IMPROVES QUALITY OF LIFE IN PATIENTS WITH COLD AGGLUTININ DISEASE: PATIENT-REPORTED OUTCOMES RESULTS OF THE PHASE 3 CARDINAL STUDY. Hematol Transfus Cell Ther 2020. [DOI: 10.1016/j.htct.2020.10.095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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91
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Lassen T, Just J, Hjortbak M, Jespersen N, Stenz K, Gu T, Yan Y, Su J, Nyengaard J, Kristiansen S, Drasbek K, Kjems J, Botker H. Cardioprotection by remote ischemic conditioning is transferable by plasma and mediated by exosomes. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Remote ischemic conditioning (RIC) by brief periods of limb ischemia and reperfusion protects against ischemia-reperfusion injury. However, the mechanism is unknown.
Purpose
We studied the role of exosomes for mediating the cardioprotective signal and whether they accumulate in injured myocardium.
Methods
Blood samples from 12 healthy male volunteers were obtained prior to and one hour after RIC. Plasma obtained before and after RIC (n=4) (P-Pre and P-Post) was used to evaluate the transferability of RIC. Pre- and Post-RIC plasma (n=8) was separated into an exosome rich fraction (Exo-Pre and Exo-Post) and an exosome depleted fraction (Prot-Pre and Prot-Post) by size exclusion chromatography. All studies were carried out in duplicate samples from each volunteer. Infarct size was compared in Sprague-Dawley rat hearts perfused with plasma, exosomes and exosome depleted fractions in a Langendorff model. We investigated changes in the miRNA content of the exosomes after RIC by a human miRNA panel. Additionally, fluorescently labeled exosomes isolated from C2C12 cells were used to assess accumulation in injured myocardium in an in vivo rat model. Rats were divided into an infarct group (n=6) (left anterior descending artery ligation) and a sham group (n=6) (without ligation). Labelled exosomes were injected in the femoral vein prior to reperfusion. Exosome-accumulation in infarcted or sham myocardium was evaluated.
Results
P-Post reduced infarct size by 15% points compared with P-Pre (55±4% vs 70±6%, p=0.03) (Fig. 1a). Exo-Post reduced infarct size by 16% points compared with Exo-Pre (53±15% vs 68±12%, p=0.03) (Fig. 1b). Prot-Post did not affect infarct size compared to Prot-Pre (64±3% and 68±10%, p>0.99). We found miRNA-16, miRNA-144 and miRNA-451 to be upregulated in exosomes after RIC and the mTOR-pathway as a potential target for these miRNAs. In the in vivo model, labelled exosomes accumulated more intensively in the infarct area than in remote areas and sham hearts (Fig. 1c).
Conclusion
Cardioprotection by RIC is mediated by exosomes with a changed miRNA profile and exosomes accumulate in injured myocardium.
Figure 1
Funding Acknowledgement
Type of funding source: Private company. Main funding source(s): Novo synergy
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Hahn E, O'Sullivan B, Waldron J, Kim J, Ringash J, Bayley A, Bratman S, Cho J, Giuliani M, Hosni A, Hope A, Irish J, Gilbert R, Goldstein D, Su J, Xu W, Tong L, Huang S. Outcomes of Salvage Radiotherapy after Laser Surgery for Early Stage Glottic Cancer. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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93
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Plummer EL, Murray GL, Bodiyabadu K, Su J, Garland SM, Bradshaw CS, Read TRH, Tabrizi SN, Danielewski JA. A custom amplicon sequencing approach to detect resistance associated mutations and sequence types in Mycoplasma genitalium. J Microbiol Methods 2020; 179:106089. [PMID: 33184030 DOI: 10.1016/j.mimet.2020.106089] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 09/24/2020] [Accepted: 10/20/2020] [Indexed: 12/26/2022]
Abstract
BACKGROUND Mycoplasma genitalium resistance to antibiotic treatments is increasing, with very limited treatment alternatives on the horizon. Surveillance via sequencing of multiple M. genitalium loci would allow: monitoring of known antibiotic resistance mutations, associations between resistance/treatment failure and specific mutations, and strain typing for epidemiological purposes. In this study we assessed the performance of a custom amplicon sequencing approach, which negates the cost of library preparation for next generation sequencing. METHODS Fifty-two M. genitalium positive samples (cervical, vaginal, anal and rectal swabs, and urine) were used. Three regions associated with M. genitalium antibiotic resistance (23S rRNA, parC and gyrA genes) were targeted, in conjunction with a locus used for differentiation of sequence types in the mgpB gene, and findings compared to Sanger sequencing. RESULTS Amplicon sequencing provided adequate sequence read coverage (>30×) for the majority of samples for 23S rRNA gene (96%) and mgpB (97%), parC (78%) and gyrA (75%). Single nucleotide polymorphisms (SNPs) were characterised in samples for 23S rRNA gene (94%), parC (56%) and gyrA (4%). Unlike Sanger sequencing, mixed mutations could be identified by the amplicon sequencing method, and ratios of mutation types determined. All results, with one exception, were concordant to Sanger sequence results. Sequence diversity in the mgpB region was represented by 15 sequence types, 4 being observed in multiple samples. CONCLUSIONS We have demonstrated the utility of this custom amplicon sequencing approach for generating highly informative datasets with the capacity to identify and determine ratios of mixed sequences. The use of this customisable amplicon sequencing method enables cost effective, scalable amplicon sequencing of multiple target regions of interest in M. genitalium.
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He ZK, Wang J, Sun H, Su J, Liu X, Gu WP, Yu DS, Luo LZ, Wang ML, Hu B, Hu WF, Tong J, Yang M, Wang SL, Wang CX, Wang YL, Zhan ZF, Duan R, Qin S, Jing HQ, Wang X. [Characteristics and diversity of infectious diarrheal caused by various pathogens]. ZHONGHUA LIU XING BING XUE ZA ZHI = ZHONGHUA LIUXINGBINGXUE ZAZHI 2020; 41:1328-1334. [PMID: 32867445 DOI: 10.3760/cma.j.cn112338-20200213-00093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the characteristics and differences of diarrhea-related symptoms caused by different pathogens, and the clinical features of various pathogens causing diarrhea. Methods: Etiology surveillance program was conducted among 20 provinces of China from 2010 to 2016. The acute diarrhea outpatients were collected from clinics or hospitals. A questionnaire was used to survey demographics and clinical features. VFeces samples were taken for laboratory detection of 22 common diarrhea pathogens, to detect and analyze the clinical symptom pattern characteristics of the patient's. Results: A total of 38 950 outpatients were enrolled from 20 provinces of China. The positive rates of Rotavirus and Norovirus were the highest among the five diarrhea-causing viruses (Rotavirus: 18.29%, Norovirus: 13.06%). In the isolation and culture of 17 diarrhea-causing bacterial, Escherichia coli showed the highest positive rates (6.25%). The clinical features of bacterial diarrhea and viral diarrhea were mainly reflected in the results of fecal traits and routine examination, but pathogenic Vibrio infection was similar to viral diarrhea. Conclusion: Infectious diarrhea presents different characteristics due to various symptoms which can provide a basis for clinical diagnosis.
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Su J, Zhou JY, Tao R, Wan YN, Qin Y, Lu Y, Hua YJ, Jin JR, Bian Z, Guo Y, Chen ZM, Wu M, Li LM. [Association between family history of diabetes and incident diabetes of adults: a prospective study]. ZHONGHUA YU FANG YI XUE ZA ZHI [CHINESE JOURNAL OF PREVENTIVE MEDICINE] 2020; 54:828-833. [PMID: 32842310 DOI: 10.3760/cma.j.cn112150-20200212-00091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the association betweew family history of diabetes and incident diabetes of adults. Methods: A total of 49 266 participants in the China Kadoorie Biobank (CKB) study from Wuzhong district of Suzhou city were included in the analysis, after the exclusion of those with heart disease, stroke, cancer and diabetes at baseline survey. The person-year of follow-up was calculated from the date on completion of baseline survey to the date on any firstly-occurred event, i.e., diabetes incidence, death, loss of follow-up, or December 31, 2013. Cox regression model was used to estimate the hazards ratios of the association between family history of diabetes and incident diabetes. Results: During 348 677 person-years of the follow-up (median 7.08 years), a total of 423 men and 791 women were diagnosed as having diabetes. Compared to those without diabetic family history, participants with family history of diabetes showed a higher risk of diabetes, with a HR (95%CI) of 1.90 (1.57-2.29), and the risk increased with the number of relatives suffering from diabetes (Pfor trend<0.05). The family history of maternal type, sibling type, and sibling and parental type had a statistically significant association with the risk of diabetes. The adjusted HR (95%CI) was 2.03 (1.45-2.77), 2.07 (1.56-2.68) and 2.39 (1.14-4.34), respectively. Modification effects of tobacco smoking, alcohol drinking, body mass index and physical activity on the association between diabetic family history and risk of diabetes were not observed in the study (Pfor interaction >0.05). Conclusions: Diabetic family history is associated with the increased incident diabetes, and the risk increased with the number of relatives suffering from diabetes.
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Su J, Bapat R, Visakan G, Moradian-Oldak J. An Evolutionarily Conserved Helix Mediates Ameloblastin-Cell Interaction. J Dent Res 2020; 99:1072-1081. [PMID: 32401578 PMCID: PMC7375739 DOI: 10.1177/0022034520918521] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Ameloblastin (Ambn) has the potential to regulate cell-matrix adhesion through familiar cell-binding domains, but the proposed sequence motifs are not highly conserved across species. Here, we report that Ambn binds to ameloblast-like cell membranes through a highly evolutionary conserved amphipathic helix-forming (AH) motif encoded by exon 5. We applied high-resolution confocal microscopy to show colocalization of Ambn with ameloblast membrane surfaces in developing mouse incisors. Using a series of Ambn-derived peptides and Ambn variants, we showed that Ambn binds to cell membranes through a motif within the sequence encoded by exon 5. Using peptides derived from the N- or C-termini of this sequence, as well as Ambn variants that lacked or had a disrupted AH motif, we demonstrated that the AH motif located at the N-terminus of the sequence is involved in cell-Ambn adhesion. Sequence analysis revealed that this highly conserved AH motif is absent from other enamel matrix proteins, including amelogenin, enamelin, and amelotin. Collectively, these data suggest that Ambn binds to the cell surface membrane via a helix-forming motif and provide insight into the molecular mechanism and function of Ambn in enamel cell-matrix interaction.
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Li P, Wang Z, Lu Y, Li N, Xiao L, Su J, Duan H, Liu X, Wu W. Assessment of knee extensor and flexor function using isokinetic test in COPD: impact on exercise capacity. Int J Tuberc Lung Dis 2020; 24:776-781. [PMID: 32912381 DOI: 10.5588/ijtld.19.0588] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE: To quantify the relationship between strength and endurance of knee extensor and flexor and exercise capacity in patients with chronic obstructive pulmonary disease (COPD).METHODS: A total of 108 patients with stable COPD (age: 65 years, IQR25-75: 59-72) were enrolled in this cross-sectional study. Knee extensor and flexor function was evaluated using the isokinetic test, and the parameters attained were considered as independent variables. Exercise capacity was evaluated using 6-minute walking test (6MWT) and 30-second sit-to-stand test (30s SST), and the results were considered as dependent variables. The association between lower-limb muscle function and exercise capacity was assessed using multiple regression analysis.RESULTS: The patients mostly had moderate-to-severe airflow obstruction with a post-bronchodilator forced expiratory volume in 1 second (FEV1) of 57.87 ± 17.71% predicted. In multiple regression analysis, flexor total work (TW), extensor endurance ratio (ER), age and FEV1%pred were significantly associated with 6MWT (adjusted R² = 0.455, P < 0.001). Flexor TW and age were significantly associated with 30s SST (adjusted R² = 0.355, P < 0.001).CONCLUSION: Knee endurance has a significant relationship with exercise capacity, and knee flexor endurance seems to be an important factor contributing to exercise capacity in COPD patients.
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Yang J, Xu ZF, Su J, Fan SF, Wang JY, Ji LD, Chen XM. [Research progress on the circadian clock regulation in cardiovascular system and association between circadian clock regulation and cardiovascular diseases]. ZHONGHUA XIN XUE GUAN BING ZA ZHI 2020; 48:610-615. [PMID: 32842273 DOI: 10.3760/cma.j.cn112148-20190725-00430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Wu XZ, Jiang L, Gu NL, Zhou J, Su J. [Imported falciparum malaria in Suzhou City: a report of two cases in 2019]. ZHONGGUO XUE XI CHONG BING FANG ZHI ZA ZHI = CHINESE JOURNAL OF SCHISTOSOMIASIS CONTROL 2020; 32:328-330. [PMID: 32468804 DOI: 10.16250/j.32.1374.2019135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The demographic features, epidemiology, diagnosis and treatment of two cases with falciparum malaria imported into Suzhou City in 2019 were reported. These findings indicate a risk of imported malaria in visitors besides high prevalence in migrant labors, and much attention should be paid to children that are at a high risk of infections.
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Su J, Su W, Long W. THU0596 ABNORMAL RIGHT VENTRICLE RESERVE ON EXERCISE PREDICTS PULMONARY HYPERTENSION IN MIXED CONNECTIVE TISSUE DISEASE: A CASE REPORT. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.1980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Pulmonary hypertension is one of the most common complications in patients with mixed connective tissue disease (MCTD). Patients are usually at the late stage and have irreversible right heart dysfunction when diagnosed as pulmonary hypertension with the rest echocardiography. Early detection of right heart dysfunction before pulmonary hypertension is essential to ensure that patients receive timely and appropriate treatment for this progressive disease. We aimed to use exercise stress echocardiography to detect early right heart dysfunction in patients with CTD and without pulmonary hypertension.Objectives:To present a clinical case of MCTD with normal right ventricular (RV) function at resting but presenting RV dysfunction on exercise, who developed pulmonary hypertension after one-year follow-up.Methods:Case report. The patient was subject to the treadmill exercise stress echocardiography. The autoantibodies including anti-nRNP/Sm, anti-Ro-52, and antinuclear antibody (ANA) were detected. The patient was followed-up to one year.Results:A 31-year-old female patient was admitted to our department in 2018, with a history of MCTD for five years. Autoantibodies testing revealed that the patient was positive for anti-nRNP/Sm (+++), anti-Ro-52 (+++), and ANA (1:3200). Echocardiography revealed no obvious cardiac dysfunction. However, the velocity of tricuspid valve regurgitation was 3.0m/s following treadmill exercise stress. The patient was followed-up to one year. Then, she developed occult pulmonary hypertension with the velocity of tricuspid valve regurgitation of 3.3m/s following treadmill exercise stress. Accordingly, MTX and prednisone were switched to MTX, prednisone, hydroxychloroquine (HCQ) and beraprost.Conclusion:This study showed that treadmill exercise echocardiography could detect right heart dysfunction early before diagnosed as pulmonary hypertension with rest echocardiography in patients with MCTD in its early stage.References:[1]Aithala R, Alex AG, Danda D. Pulmonary hypertension in connective tissue diseases: an update. Int J Rheum Dis. 2017;20(1):5–24.Disclosure of Interests:None declared
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