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Meng Z, Xin L, Fan B. SDF-1α promotes subchondral bone sclerosis and aggravates osteoarthritis by regulating the proliferation and osteogenic differentiation of bone marrow mesenchymal stem cells. BMC Musculoskelet Disord 2023; 24:275. [PMID: 37038152 PMCID: PMC10088262 DOI: 10.1186/s12891-023-06366-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 03/24/2023] [Indexed: 04/12/2023] Open
Abstract
BACKGROUND Subchondral bone sclerosis is a major feature of osteoarthritis (OA), and bone marrow mesenchymal stem cells (BMSCs) are presumed to play an important role in subchondral bone sclerosis. Accumulating evidence has shown that stromal cell-derived factor-1α (SDF-1α) plays a key role in bone metabolism-related diseases, but its role in OA pathogenesis remains largely unknown. The purpose of this study was to explore the role of SDF-1α expressed on BMSCs in subchondral bone sclerosis in an OA model. METHODS In the present study, C57BL/6J mice were divided into the following three groups: the sham control, destabilization of the medial meniscus (DMM), and AMD3100-treated DMM (DMM + AMD3100) groups. The mice were sacrificed after 2 or 8 weeks, and samples were collected for histological and immunohistochemical analyses. OA severity was assessed by performing hematoxylin and eosin (HE) and safranin O-fast green staining. SDF-1α expression in the OA model was measured using an enzyme-linked immunosorbent assay (ELISA), quantitative real-time polymerase chain reaction (q-PCR), and immunohistochemistry. Micro-CT was used to observe changes in subchondral bone in the OA model. CD44, CD90, RUNX2, and OCN expression in subchondral bone were measured using q-PCR and immunohistochemistry. In vitro, BMSCs were transfected with a recombinant lentivirus expressing SDF-1α, an empty vector (EV), or siRNA-SDF-1α. Western blot analysis, q-PCR, and immunofluorescence staining were used to confirm the successful transfection of BMSCs. The effect of SDF-1α on BMSC proliferation was evaluated by performing a CCK-8 assay and cell cycle analysis. The effect of SDF-1α on the osteogenic differentiation of BMSCs was assessed by performing alkaline phosphatase (ALP) and alizarin red S (ARS) staining. Cyclin D1, RUNX2 and OCN expression were measured using Western blot analysis, q-PCR, and immunofluorescence staining. RESULTS SDF-1α expression in the DMM-induced OA model increased. In the DMM + AMD3100 group, subchondral bone sclerosis was alleviated, OA was effectively relieved, and CD44, CD90, RUNX2, and OCN expression in subchondral bone was decreased. In vitro, high levels of SDF-1α promoted BMSC proliferation and increased osteogenic differentiation. Cyclin D1, RUNX2, and OCN expression increased. CONCLUSION The results of this study reveal a new molecular mechanism underlying the pathogenesis of OA. The targeted regulation of SDF-1α may be clinically effective in suppressing OA progression.
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Affiliation(s)
- Zhiqiang Meng
- Jiaozuo Coal Industry (Group) Co. Ltd, Central Hospital, No. 1 Jiankang Road, Jiefang District, Jiaozuo, 454000, Henan, China
- General Hospital of Ningxia Medical University, Ningxia Medical University, Ningxia, China
| | - Lujun Xin
- Jiaozuo Coal Industry (Group) Co. Ltd, Central Hospital, No. 1 Jiankang Road, Jiefang District, Jiaozuo, 454000, Henan, China
| | - Bosheng Fan
- Jiaozuo Coal Industry (Group) Co. Ltd, Central Hospital, No. 1 Jiankang Road, Jiefang District, Jiaozuo, 454000, Henan, China.
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Nakamura Y, Yoshida S, Arita Y, Takeshita R, Kimura K, Aida Y, Asai S, Maezawa Y, Yoshitomi K, Chen W, Soma T, Kobayashi M, Fujiwara M, Fan B, Ishikawa Y, Fukuda S, Waseda Y, Tanaka H, Yokoyama M, Jinzaki M, Fujii Y. Can we avoid second transurethral resection according to VI-RADS score in patients with high-risk non-muscle-invasive bladder cancer? Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00645-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Fukuda S, Kobayashi M, Chen W, Fan B, Liu F, Afari J, Dhanji S, Ghassemzadeh S, Shah A, Schmeusser B, Greenwald R, Medline A, Kamal F, Ali A, Nakayama A, Meagher M, Patil D, Tanaka H, Saito K, Derweesh I, Master V, Fujii Y. Impact of preoperative C-reactive protein level on oncological outcomes after nephrectomy in patients with high-risk renal cell carcinoma: An analysis from the International Marker Consortium for Renal Cancer (INMARC) cohort. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00507-9] [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: 02/12/2023]
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Ishikawa Y, Uehara S, Ishihara K, Hirose K, Soma T, Fujiwara M, Kobayashi M, Fan B, Nakamura Y, Uchida Y, Fukuda S, Tanaka H, Yoshida S, Yokoyama M, Matsuoka Y, Fujii Y. Variability in diagnostic performance of non-muscle invasive bladder cancer for each region using fluorescence cystoscopy with orally administered 5-aminolevulinic acid. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00317-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ishikawa Y, Sho U, Ishihara K, Hirose K, Soma T, Fujiwara M, Kobayashi M, Fan B, Nakamura Y, Uchida Y, Fukuda S, Tanaka H, Yoshida S, Yokoyama M, Matsuoka Y, Fujii Y. Orally administered 5-aminolevulinic acid can cause intraoperative hypotension in patients with bladder cancer undergoing transurethral resection. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00332-3] [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: 11/28/2022]
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Wang C, Feng D, Dong S, He R, Fan B. Dysregulated circulating microRNA‐126 in chronic obstructive pulmonary disease: linkage with acute exacerbation risk, severity degree, and inflammatory cytokines. J Clin Lab Anal 2022; 36:e24204. [PMID: 35064606 PMCID: PMC8906012 DOI: 10.1002/jcla.24204] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/11/2021] [Accepted: 12/15/2021] [Indexed: 11/08/2022] Open
Affiliation(s)
- Congying Wang
- Department of Respiratory and Critical Care Medicine Jiaozuo Coal Industry (Group) Co. Ltd. Central Hospital Jiaozuo China
| | - Dong Feng
- Department of Orthopedics Jiaozuo Coal Industry (Group) Co. Ltd. Central Hospital Jiaozuo China
| | - Shanfeng Dong
- Department of Urology Jiaozuo Coal Industry (Group) Co. Ltd. Central Hospital Jiaozuo China
| | - Ruilian He
- Department of Respiratory and Critical Care Medicine Jiaozuo Coal Industry (Group) Co. Ltd. Central Hospital Jiaozuo China
| | - Bosheng Fan
- Department of Neurology Jiaozuo Coal Industry (Group) Co. Ltd. Central Hospital Jiaozuo China
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Ding M, Cui H, Li B, Zou B, Xu Y, Fan B, Li W, Ma L, Yu J, Wang L. Integrating Preoperative CT and Clinical Factors for Lymph Node Metastasis Prediction in Esophageal Cancer by Feature-Wise Attentional Graph Neural Network (FAGNN). Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Yang L, Li B, Xu Y, Zou B, Fan B, Qin W, Fan X, Zhang D, Wang L. The Role of Adjuvant Chemotherapy in Patients With Stage IB Non-Small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1288] [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: 11/28/2022]
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Fan X, Li B, Wang S, Fan B, Wang C, Yang L, Qin W, Zhang D, Wang L. Prophylactic Cranial Irradiation-Related Lymphopenia Affects Progression-Free Survival in Patients With Small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1302] [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: 10/20/2022]
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Wang R, Wu S, Qian D, Zhang Y, Fan B, Hu M. A Lung Cancer Auxiliary Diagnostic Method: Deep Learning Based Mediastinal Lymphatic Partitions Segmentation for Cancer Staging. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.474] [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: 10/20/2022]
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Li B, Li W, Fan B, Zou B, Jiang C, Sun X, Yu J, Wang L. Efficacy of Radiotherapy In Oligometastatic Esophageal Squamous Cell Cancer Patients: New Evidence From A Retrospective Study. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1857] [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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Li B, Jiang C, Pang L, Fan B, Zou B, Ding M, Sun X, Yu J, Wang L. Toxicity Profile of Combining Immune Checkpoint Inhibitors and Thoracic Radiotherapy in Non-Small Cell Lung Cancer: A Systematic Analysis of Literature. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Fan B, Chen LP, Yuan YH, Xiao HN, Lv XS, Xia ZY. MiR-15a-3p suppresses the growth and metastasis of ovarian cancer cell by targeting Twist1. Eur Rev Med Pharmacol Sci 2020; 23:1934-1946. [PMID: 30915736 DOI: 10.26355/eurrev_201903_17232] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate the roles of miR-15a-3p in ovarian cancer cell growth and metastasis. PATIENTS AND METHODS A key role of miR-15a-3p was identified via gene profiling and bioinformatics analysis. The impact of miR-15a-3p on ovarian cancer cell growth, migration and invasion was measured by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT), wound-healing and transwell invasion assays. Bioinformatics and luciferase reporter assays were applied to identify that twist family BHLH transcription factor 1 (Twist1) was the target gene of miR-15a-3p. The miR-15a-3p level and the expression of Twist1 were detected using quantitative Real-time polymerase chain reaction (qRT-PCR) assay. The expressions of N-cadherin and E-cadherin were measured by immunofluorescence staining. Small interfering RNA targeting Twist1 and pCDNA3.1 containing Twist1 were applied to decrease and increase the expression of Twist1, respectively. RESULTS miR-15a-3p was markedly down-regulated in ovarian cancer. Exogenous up-regulation of miR-15a-3p inhibited the growth, colony formation, migration and invasion of ovarian cancer cell in vitro. Furthermore, a xenograft model indicated that miR-15a-3p inhibited tumour growth and the metastatic potential of ovarian cancer cell in vivo. We found that Twist1 was the direct target of miR-15a-3p in ovarian cancer and that its expression was negatively correlated with the level of miR-15a-3p in ovarian cancer tissues. Up-regulation of miR-15a-3p rescued the inhibitory impact of miR-15a-3p on ovarian cancer cell growth, migration and invasion. Finally, down-regulation of Twist1 mimicked the suppressive effects of miR-15a-3p on ovarian cancer cell. CONCLUSIONS We demonstrated that miR-15a-3p is down-regulated in ovarian cancer. Up-regulation of miR-15a-3p restrains the growth and metastasis of ovarian cancer cell by regulating Twist1.
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Affiliation(s)
- B Fan
- Obstetrics and Gynecology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China.
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Fan B, Li L, Xiao DJ, Xu T. Study of miR-26a inhibiting epithelial-mesenchymal transition and invasion of Tu686 cell line through SMAD1. Eur Rev Med Pharmacol Sci 2020; 23:217-224. [PMID: 30657563 DOI: 10.26355/eurrev_201901_16767] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE This study aims to investigate the effect of miR-26a on the epithelial-mesenchymal transition (EMT) and invasion of Tu686 cell line through SMAD1. MATERIALS AND METHODS Tu686 Squamous cell carcinoma of head and neck (SCCHN) cell strains were divided into the miR-26a group, miR-NC group, co-transfection group and blank control group. Among them, the miR-26a group only transfected miR-26a mimics, the miR-NC group only transfected miR-26a negative control, the co-transfection group transfected miR-26a mimics and pcDNA3.1-SMAD1 plasmid. The qRT-PCR method was used for the detection of the expressions of miR-26a and SMAD1 in each group of cells, transwell assay for the detection of the invasion ability of each group of cells and Western blot for detecting the expression level of SMAD1 and the expressions of EMT-related proteins E-cadherin and N-cadherin. RESULTS The relative expression of miR-26a in the miR-26a group was significantly higher than that in the miR-NC group and blank control group, and the relative expression in the co-transfection group was significantly higher than that in the miR-NC and blank control groups. The relative expression of SMAD1 in the miR-26a group was significantly lower than that in the miR-NC and blank control groups, and the relative expression in the co-transfection group was lower than that in the miR-NC and blank control groups, and higher than that in the miR-26a group (all p<0.05). There was no significant difference between the miR-NC group and the blank control group (p>0.05). CONCLUSIONS miR-26a may reduce the expression level of SMAD1, affect the expression of EMT-related proteins, inhibit the EMT function of Tu686 cells of squamous cell carcinoma of head and neck, and inhibit the invasion of them.
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Affiliation(s)
- B Fan
- Department of Otorhinolaryngology, Wuxi No. 2 People's Hospital, Wuxi, P.R. China.
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Song Z, Lu Y, Liu X, Wei C, Oladipo A, Fan B. Evaluation of Pantoea eucalypti FBS135 for pine (Pinus massoniana) growth promotion and its genome analysis. J Appl Microbiol 2020; 129:958-970. [PMID: 32329126 DOI: 10.1111/jam.14673] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 04/16/2020] [Accepted: 04/18/2020] [Indexed: 12/15/2022]
Abstract
AIMS Pinus massoniana is one of the most widely distributed forest plants in China. In this study, we isolated a bacterial endophyte (designated FBS135) from apical buds and needles of P. massoniana. Investigations were performed to understand the effects of the strain on pine growth, its genomic features and the functions of the plasmids it carries. METHODS AND RESULTS Based on its morphological features and 16S rRNA sequence, strain FBS135 was primarily identified as Pantoea eucalypti. We found that FBS135 not only promoted the growth of P. massoniana seedlings, but also significantly increased the survival rate of pine seedlings. The whole genome of FBS135 was sequenced, which revealed that the bacterium carries one chromosome and four plasmids. Its chromosome is 4 023 751 bp in size and contains dozens of genes involved in plant symbiosis. Curing one of the four plasmids, pPant1, resulted in a decrease in the size of the FBS135 colonies and the loss of the ability to synthesize yellow pigment, indicating that this plasmid may be very important for FBS135. CONCLUSIONS Pantoea eucalypti FBS135 has a genomic basis to be implicated in plant-associated lifestyle and was established to have the capability to promote pine growth. SIGNIFICANCE AND IMPACT OF THE STUDY To the best of our knowledge, this is the first report that such a bacterial species, P. eucalypti, was isolated from pine trees and evidenced to have pine beneficial activities. Our results elucidate the ecological effects of endophytes on forest plants as well as endophyte-plant interaction mechanisms.
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Affiliation(s)
- Z Song
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Y Lu
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - X Liu
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - C Wei
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - A Oladipo
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
| | - B Fan
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, China
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Ezzati G, Fenton O, Healy MG, Christianson L, Feyereisen GW, Thornton S, Chen Q, Fan B, Ding J, Daly K. Impact of P inputs on source-sink P dynamics of sediment along an agricultural ditch network. J Environ Manage 2020; 257:109988. [PMID: 31868644 DOI: 10.1016/j.jenvman.2019.109988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 12/02/2019] [Accepted: 12/11/2019] [Indexed: 06/10/2023]
Abstract
Phosphorus (P) loss from intensive dairy farms is a pressure on water quality in agricultural catchments. At farm scale, P sources can enter in-field drains and open ditches, resulting in transfer along ditch networks and delivery into nearby streams. Open ditches could be a potential location for P mitigation if the right location was identified, depending on P sources entering the ditch and the source-sink dynamics at the sediment-water interface. The objective of this study was to identify the right location along a ditch to mitigate P losses on an intensive dairy farm. High spatial resolution grab samples for water quality, along with sediment and bankside samples, were collected along an open ditch network to characterise the P dynamics within the ditch. Phosphorus inputs to the ditch adversely affected water quality, and a step change in P concentrations (increase in mean dissolved reactive phosphorus (DRP) from 0.054 to 0.228 mg L-1) midway along the section of the ditch sampled, signalled the influence of a point source entering the ditch. Phosphorus inputs altered sediment P sorption properties as P accumulated along the length of the ditch. Accumulation of bankside and sediment labile extractable P, Mehlich 3 P (M3P) (from 13 to 97 mg kg-1) resulted in a decrease in P binding energies (k) to < 1 L mg-1 at downstream points and raised the equilibrium P concentrations (EPC0) from 0.07 to 4.61 mg L-1 along the ditch. The increase in EPC0 was in line with increasing dissolved and total P in water, demonstrating the role of sediment downstream in this ditch as a secondary source of P to water. Implementation of intervention measures are needed to both mitigate P loss and remediate sediment to restore the sink properties. In-ditch measures need to account for a physicochemical lag time before improvements in water quality will be observed.
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Affiliation(s)
- G Ezzati
- Teagasc, Environmental Research Centre, Johnstown Castle, Co. Wexford, Ireland; Civil Engineering, College of Science and Engineering, Ryan Institute, National University of Ireland, Galway, Galway, Ireland
| | - O Fenton
- Teagasc, Environmental Research Centre, Johnstown Castle, Co. Wexford, Ireland
| | - M G Healy
- Civil Engineering, College of Science and Engineering, Ryan Institute, National University of Ireland, Galway, Galway, Ireland
| | - L Christianson
- Department of Crop Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - G W Feyereisen
- USDA-Agricultural Research Service (ARS), St. Paul, MN, USA
| | - S Thornton
- Groundwater Protection and Restoration Group, Kroto Research Institute, University of Sheffield, Sheffield, United Kingdom
| | - Q Chen
- Beijing Key Larboratory of Farmyard Soil Pollution Prevention-control and Remediation; College of Resourse and Environmental Sciences, China Agricultural Univerisy, Beijing, 100193, PR China
| | - B Fan
- Beijing Key Larboratory of Farmyard Soil Pollution Prevention-control and Remediation; College of Resourse and Environmental Sciences, China Agricultural Univerisy, Beijing, 100193, PR China
| | - J Ding
- Beijing Key Larboratory of Farmyard Soil Pollution Prevention-control and Remediation; College of Resourse and Environmental Sciences, China Agricultural Univerisy, Beijing, 100193, PR China
| | - K Daly
- Teagasc, Environmental Research Centre, Johnstown Castle, Co. Wexford, Ireland.
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Abstract
Textured surfaces, comprised of grooves filled with air, e.g., air-filled surfaces (AFS), or with liquid, e.g., liquid-filled surfaces (LFS), significantly influence fluid flows and the related electrokinetic streaming potential (Vs). Here, electroosmotic mobility related tensorial effects on the Vs were experimentally investigated. A significant modulation of the Vs, as high as 100%, due to transverse pressure gradients, was demonstrated. The study yields insights into understanding geometrical effects in electrolyte flows with implications to the establishment of local electric fields, energy generation, and biological separations.
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Affiliation(s)
- B Fan
- Program in Materials Science, Department of Mechanical Engineering , University of California, San Diego , La Jolla , California 92093 , United States
| | - P R Bandaru
- Program in Materials Science, Department of Mechanical Engineering , University of California, San Diego , La Jolla , California 92093 , United States
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Zhao Y, Fan W, Xu T, Tay FR, Gutmann JL, Fan B. Evaluation of several instrumentation techniques and irrigation methods on the percentage of untouched canal wall and accumulated dentine debris in C‐shaped canals. Int Endod J 2019; 52:1354-1365. [DOI: 10.1111/iej.13119] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 03/18/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Y. Zhao
- 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
| | - W. Fan
- 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
| | - T. Xu
- 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
| | - F. R. Tay
- Department of Endodontics The Dental College of Georgia Augusta University Augusta GA USA
| | - J. L. Gutmann
- Department of Restorative Science/Endodontics Texas A&M University Baylor College of Dentistry Dallas TX USA
| | - B. Fan
- 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
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Chen HF, Jiang QJ, Qiu YQ, Chen XC, Fan B, Wang Y, Wang DN. Hollow-Core-Photonic-Crystal-Fiber-Based Miniaturized Sensor for the Detection of Aggregation-Induced-Emission Molecules. Anal Chem 2018; 91:780-784. [PMID: 30475594 DOI: 10.1021/acs.analchem.8b03219] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A miniature sensor for detection of aggregation-induced-emission (AIE) molecules is proposed in this work. The sensing head is fabricated by use of hollow-core photonic crystal fiber with a core diameter of about 4.8 μm. The cladding holes are sealed with a fusion splicing technique, and the central hole remains open to allow the filtration of solution with AIE molecules. When the solution is excited by an ultraviolet lamp, the fluorescence is received by a fiber-optic spectrometer. The fluorescence intensity is associated with the concentration of AIE molecules and the infiltrated-core length. In the whole process of the experiments, the output-peak wavelength is stable, which indicates that the existing forms of AIE particles are stable, and the fluorescence reabsorption can be neglected. The experimental results obtained are in accordance with traditional microplate-spectrophotometer methods. The most exciting result is that the amount of sample measured can be as low as 0.36 nL, which allows the detection of AIE molecules at only 0.02 pmol. In addition, the miniature sensor was successfully applied to the detection of an AIE-based bioprobe for evaluating the activity of the dipeptidyl-peptidase 4 (DPP-4) inhibitor sitagliptin with an IC50 of 59.80 ± 3.06 nM. The advantages of small device size and nanoliter-scale sample volumes suggest that the proposed sensor is promising for many biosensing applications.
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Affiliation(s)
- H F Chen
- College of Optical and Electronic Technology , China Jiliang University , Hangzhou , Zhejiang 310018 , China.,State Key Laboratory of Advanced Optical Communication Systems and Networks , Shanghai Jiaotong University , Shanghai 200000 , China
| | - Q J Jiang
- College of Optical and Electronic Technology , China Jiliang University , Hangzhou , Zhejiang 310018 , China.,State Key Laboratory of Advanced Optical Communication Systems and Networks , Shanghai Jiaotong University , Shanghai 200000 , China
| | - Y Q Qiu
- College of Optical and Electronic Technology , China Jiliang University , Hangzhou , Zhejiang 310018 , China
| | - X C Chen
- College of Pharmaceutical Sciences , Zhejiang University , Hangzhou , Zhejiang 310058 , China
| | - B Fan
- College of Pharmaceutical Sciences , Zhejiang University , Hangzhou , Zhejiang 310058 , China
| | - Y Wang
- College of Pharmaceutical Sciences , Zhejiang University , Hangzhou , Zhejiang 310058 , China
| | - D N Wang
- College of Optical and Electronic Technology , China Jiliang University , Hangzhou , Zhejiang 310018 , China
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Fan B, Bhattacharya A, Bandaru PR. Enhanced voltage generation through electrolyte flow on liquid-filled surfaces. Nat Commun 2018; 9:4050. [PMID: 30283012 PMCID: PMC6170469 DOI: 10.1038/s41467-018-06297-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [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: 03/22/2018] [Accepted: 08/28/2018] [Indexed: 11/10/2022] Open
Abstract
The generation of electrical voltage through the flow of an electrolyte over a charged surface may be used for energy transduction. Here, we show that enhanced electrical potential differences (i.e., streaming potential) may be obtained through the flow of salt water on liquid-filled surfaces that are infiltrated with a lower dielectric constant liquid, such as oil, to harness electrolyte slip and associated surface charge. A record-high figure of merit, in terms of the voltage generated per unit applied pressure, of 0.043 mV Pa−1 is obtained through the use of the liquid-filled surfaces. In comparison with air-filled surfaces, the figure of merit associated with the liquid-filled surface increases by a factor of 1.4. These results lay the basis for innovative surface charge engineering methodology for the study of electrokinetic phenomena at the microscale, with possible application in new electrical power sources. Superhydrophobic surfaces are expected to increase streaming potential, but are hindered by the presence of air. Here the authors enhance streaming potential by flowing high-dielectric salt water over liquid-filled surfaces infiltrated with low-dielectric liquid, harnessing electric slip and surface charge.
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Affiliation(s)
- B Fan
- Department of Mechanical Engineering, University of California, San Diego, La Jolla, 92093-0411, CA, USA
| | - A Bhattacharya
- Department of Mechanical Engineering, University of California, San Diego, La Jolla, 92093-0411, CA, USA
| | - P R Bandaru
- Department of Mechanical Engineering, University of California, San Diego, La Jolla, 92093-0411, CA, USA. .,Program in Materials Science, University of California, San Diego, La Jolla, 92093-0411, CA, USA.
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Canbazoglu FM, Fan B, Vemuri K, Bandaru PR. Enhanced Solar Thermal Evaporation of Ethanol-Water Mixtures, through the Use of Porous Media. Langmuir 2018; 34:10523-10528. [PMID: 30130406 DOI: 10.1021/acs.langmuir.8b01731] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A significant enhancement of solar irradiation induced evaporation of water, and ethanol-water mixtures, through the use of carbon foam based porous media, is demonstrated. A relationship between the consequent rate of mass loss, with respect to the equilibrium vapor pressure, dynamic viscosity, surface tension, and density, was developed to explain experimental observations. The evaporative heat loss was parametrized through two convective heat transfer coefficients-one related to the surface and another related to the vapor external to the surface. The work promotes a better understanding of thermal processes in binary liquid mixtures with applications ranging from phase separation to distillation and desalination.
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Affiliation(s)
- F M Canbazoglu
- Department of Mechanical Engineering , University of California, San Diego , La Jolla , California , United States
| | - B Fan
- Department of Mechanical Engineering , University of California, San Diego , La Jolla , California , United States
| | - K Vemuri
- Department of Mechanical Engineering , University of California, San Diego , La Jolla , California , United States
| | - P R Bandaru
- Department of Mechanical Engineering , University of California, San Diego , La Jolla , California , United States
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22
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Kazemi L, Fan B, Sommer M, George K, Stranix-Chibanda L, Shepherd J. Tracking of Spine BMD (Bone Mineral Density) in Infants Exposed to TDF (Tenofovir Disproxil Fumarate) Medication in Utero and/or during Breast Feeding. J Clin Densitom 2018. [DOI: 10.1016/j.jocd.2017.10.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Katzman WB, Vittinghoff E, Lin F, Schafer A, Long RK, Wong S, Gladin A, Fan B, Allaire B, Kado DM, Lane NE. Targeted spine strengthening exercise and posture training program to reduce hyperkyphosis in older adults: results from the study of hyperkyphosis, exercise, and function (SHEAF) randomized controlled trial. Osteoporos Int 2017; 28:2831-2841. [PMID: 28689306 PMCID: PMC5873977 DOI: 10.1007/s00198-017-4109-x] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 05/31/2017] [Indexed: 01/01/2023]
Abstract
A 6-month randomized controlled trial of spine-strengthening exercise and posture training reduced both radiographic and clinical measures of kyphosis. Participants receiving the intervention improved self-image and satisfaction with their appearance. Results suggest that spine-strengthening exercise and postural training may be an effective treatment option for older adults with hyperkyphosis. INTRODUCTION The purpose of the present study is to determine in a randomized controlled trial whether spine-strengthening exercises improve Cobb angle of kyphosis in community-dwelling older adults. METHODS We recruited adults ≥60 years with kyphosis ≥40° and enrolled 99 participants (71 women, 28 men), mean age 70.6 ± 0.6 years, range 60-88, with baseline Cobb angle 57.4 ± 12.5°. The intervention included group spine-strengthening exercise and postural training, delivered by a physical therapist, 1-h, three times weekly for 6 months. Controls received four group health education meetings. The primary outcome was change in the gold standard Cobb angle of kyphosis measured from standing lateral spine radiographs. Secondary outcomes included change in kyphometer-measured kyphosis, physical function (modified Physical Performance Test, gait speed, Timed Up and Go, Timed Loaded Standing, 6-Min Walk), and health-related quality of life (HRQoL) (PROMIS global health and physical function indexes, SRS-30 self-image domain). ANCOVA was used to assess treatment effects on change from baseline to 6 months in all outcomes. RESULTS There was a -3.0° (95% CI -5.2, -0.8) between-group difference in change in Cobb angle, p = 0.009, favoring the intervention and approximating the magnitude of change from an incident vertebral fracture. Kyphometer-measured kyphosis (p = 0.03) and SRS-30 self-esteem (p < 0.001) showed favorable between-group differences in change, with no group differences in physical function or additional HRQoL outcomes, p > 0.05. CONCLUSIONS Spine-strengthening exercise and posture training over 6 months reduced kyphosis compared to control. Our randomized controlled trial results suggest that a targeted kyphosis-specific exercise program may be an effective treatment option for older adults with hyperkyphosis. TRIAL REGISTRATION NUMBER AND NAME OF TRIAL REGISTER ClinicalTrials.gov; identifier NCT01751685.
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Affiliation(s)
- W B Katzman
- University of California, 1500 Owens Street, San Francisco, CA, 94158, USA.
| | - E Vittinghoff
- University of California, 550 16th. Street, San Francisco, CA, 94158, USA
| | - F Lin
- University of California, 550 16th. Street, San Francisco, CA, 94158, USA
| | - A Schafer
- University of California, 4150 Clement St, San Francisco, CA, 94121, USA
- San Francisco Veterans Affairs Health Care System, 4150 Clement St, San Francisco, CA, 94121, USA
| | - R K Long
- University of California, 550 16th. Street, San Francisco, CA, 94143, USA
| | - S Wong
- University of California, 1500 Owens Street, San Francisco, CA, 94158, USA
| | - A Gladin
- Kaiser Permanente Northern CA, San Francisco Medical Center, 1635 Divisadero Street, Suite 300, San Francisco, CA, 94115, USA
| | - B Fan
- University of California, 400 Parnassus Avenue, San Francisco, CA, 94117, USA
| | - B Allaire
- Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA, 02215, USA
| | - D M Kado
- University of California, 9500 Gilman Dr, La Jolla, CA, 92093, USA
| | - N E Lane
- University of California, 4625 Second Avenue, Suite 2000, Sacramento, CA, 95616, USA
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Parrot D, Oppong-Danquah E, Fan B, Tasdemir D. Molecular Networking for Identification of Enhanced Chemical Inventories of Baltic Marine Fungi. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608336] [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: 10/18/2022]
Affiliation(s)
- D Parrot
- GEOMAR Centre for Marine Biotechnology, Research Unit Marine Natural Product Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Am Kiel-Kanal 44, Kiel, Germany
| | - E Oppong-Danquah
- GEOMAR Centre for Marine Biotechnology, Research Unit Marine Natural Product Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Am Kiel-Kanal 44, Kiel, Germany
| | - B Fan
- GEOMAR Centre for Marine Biotechnology, Research Unit Marine Natural Product Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Am Kiel-Kanal 44, Kiel, Germany
| | - D Tasdemir
- GEOMAR Centre for Marine Biotechnology, Research Unit Marine Natural Product Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Am Kiel-Kanal 44, Kiel, Germany
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Li X, Yang S, Dong K, Tang Z, Li K, Fan B, Wang Z, Liu B. Identification of positive selection signatures in pigs by comparing linkage disequilibrium variances. Anim Genet 2017; 48:600-605. [DOI: 10.1111/age.12574] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/11/2017] [Indexed: 11/26/2022]
Affiliation(s)
- X. Li
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education; Key Laboratory of Pig Genetics and Breeding of Ministry of Agriculture; Huazhong Agricultural University; Wuhan Hubei 430070 China
- The Cooperative Innovation Center for Sustainable Pig Production; Wuhan Hubei 430070 China
- Department of Agricultural, Food and Nutritional Science; University of Alberta; Edmonton AB T6G 2P5 Canada
| | - S. Yang
- College of Animal Science and Technology; Zhejiang A&F University; Lin'an Zhejiang 311300 China
| | - K. Dong
- The Key Laboratory for Domestic Animal Genetic Resources and Breeding of Ministry of Agriculture of China; Institute of Animal Science; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| | - Z. Tang
- The Key Laboratory for Domestic Animal Genetic Resources and Breeding of Ministry of Agriculture of China; Institute of Animal Science; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| | - K. Li
- The Key Laboratory for Domestic Animal Genetic Resources and Breeding of Ministry of Agriculture of China; Institute of Animal Science; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| | - B. Fan
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education; Key Laboratory of Pig Genetics and Breeding of Ministry of Agriculture; Huazhong Agricultural University; Wuhan Hubei 430070 China
| | - Z. Wang
- Department of Agricultural, Food and Nutritional Science; University of Alberta; Edmonton AB T6G 2P5 Canada
| | - B. Liu
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education; Key Laboratory of Pig Genetics and Breeding of Ministry of Agriculture; Huazhong Agricultural University; Wuhan Hubei 430070 China
- The Cooperative Innovation Center for Sustainable Pig Production; Wuhan Hubei 430070 China
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Cosman F, Krege JH, Looker AC, Schousboe JT, Fan B, Sarafrazi Isfahani N, Shepherd JA, Krohn KD, Steiger P, Wilson KE, Genant HK. Spine fracture prevalence in a nationally representative sample of US women and men aged ≥40 years: results from the National Health and Nutrition Examination Survey (NHANES) 2013-2014. Osteoporos Int 2017; 28:1857-1866. [PMID: 28175980 PMCID: PMC7422504 DOI: 10.1007/s00198-017-3948-9] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 01/26/2017] [Indexed: 12/13/2022]
Abstract
UNLABELLED Spine fracture prevalence is similar in men and women, increasing from <5 % in those <60 to 11 % in those 70-79 and 18 % in those ≥80 years. Prevalence was higher with age, lower bone mineral density (BMD), and in those meeting criteria for spine imaging. Most subjects with spine fractures were unaware of them. INTRODUCTION Spine fractures have substantial medical significance but are seldom recognized. This study collected contemporary nationally representative spine fracture prevalence data. METHODS Cross-sectional analysis of 3330 US adults aged ≥40 years participating in NHANES 2013-2014 with evaluable Vertebral Fracture Assessment (VFA). VFA was graded by semiquantitative measurement. BMD and an osteoporosis questionnaire were collected. RESULTS Overall spine fracture prevalence was 5.4 % and similar in men and women. Prevalence increased with age from <5 % in those <60 to 11 % in those 70-79 and 18 % in those ≥80 years. Fractures were more common in non-Hispanic whites and in people with lower body mass index and BMD. Among subjects with spine fracture, 26 % met BMD criteria for osteoporosis. Prevalence was higher in subjects who met National Osteoporosis Foundation (NOF) criteria for spine imaging (14 vs 4.7 %, P < 0.001). Only 8 % of people with a spine fracture diagnosed by VFA had a self-reported fracture, and among those who self-reported a spine fracture, only 21 % were diagnosed with fracture by VFA. CONCLUSION Spine fracture prevalence is similar in women and men and increases with age and lower BMD, although most subjects with spine fracture do not meet BMD criteria for osteoporosis. Since most (>90 %) individuals were unaware of their spine fractures, lateral spine imaging is needed to identify these women and men. Spine fracture prevalence was threefold higher in individuals meeting NOF criteria for spine imaging (∼1 in 7 undergoing VFA). Identifying spine fractures as part of comprehensive risk assessment may improve clinical decision making.
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Affiliation(s)
- F Cosman
- Regional Bone Center, Helen Hayes Hospital, Route 9W, West Haverstraw, NY, 10993, USA.
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, NY, USA.
| | - J H Krege
- Eli Lilly and Company, Indianapolis, IN, USA
| | - A C Looker
- National Center for Health Statistics, Centers for Disease Control and Prevention, Hyattsville, MD, USA
| | - J T Schousboe
- HealthPartners Institute and Park Nicollet Clinic, HealthPartners, Minneapolis, MN, USA
| | - B Fan
- Department of Radiology, University of California, San Francisco, CA, USA
| | - N Sarafrazi Isfahani
- National Center for Health Statistics, Centers for Disease Control and Prevention, Hyattsville, MD, USA
| | - J A Shepherd
- Department of Radiology, University of California, San Francisco, CA, USA
| | - K D Krohn
- Eli Lilly and Company, Indianapolis, IN, USA
| | - P Steiger
- Parexel International, Waltham, MA, USA
| | | | - H K Genant
- Department of Radiology, University of California, San Francisco, CA, USA
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Looker AC, Sarafrazi Isfahani N, Fan B, Shepherd JA. Trends in osteoporosis and low bone mass in older US adults, 2005-2006 through 2013-2014. Osteoporos Int 2017; 28:1979-1988. [PMID: 28315954 PMCID: PMC7891684 DOI: 10.1007/s00198-017-3996-1] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 02/28/2017] [Indexed: 11/25/2022]
Abstract
This study examined trends in osteoporosis and low bone mass in older US adults between 2005 and 2014 using bone mineral density (BMD) data from the National Health and Nutrition Examination Survey (NHANES). Osteoporosis and low bone mass appear to have increased at the femur neck but not at the lumbar spine during this period. INTRODUCTION Recent preliminary data from Medicare suggest that the decline in hip fracture incidence among older US adults may have plateaued in 2013-2014, but comparable data on BMD trends for this time period are currently lacking. This study examined trends in the prevalence of osteoporosis and low bone mass since 2005 using BMD data from NHANES. The present study also updated prevalence estimates to 2013-2014 and included estimates for non-Hispanic Asians. METHODS Femur neck and lumbar spine BMD by DXA were available for 7954 adults aged 50 years and older from four NHANES survey cycles between 2005-2006 and 2013-2014. RESULTS Significant trends (quadratic or linear) were observed for the femur neck (mean T-score and osteoporosis in both sexes; low bone mass in women) but not for the lumbar spine. The trend in femur neck status was somewhat U-shaped, with prevalences being most consistently significantly higher (by 1.1-6.6 percentage points) in 2013-2014 than 2007-2008. Adjusting for changes in body mass index, smoking, milk intake, and physician's diagnosis of osteoporosis between surveys did not change femur neck trends. In 2013-2014, the percent of older adults with osteoporosis was 6% at the femur neck, 8% at the lumbar spine, and 11% at either site. CONCLUSIONS There was some evidence of a decline in femur neck BMD between 2005-2006 and 2013-2014, but not in lumbar spine BMD. Changes in the risk factors that could be examined did not explain the femur neck BMD trends.
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Affiliation(s)
- A C Looker
- Division of Health and Nutrition Examination Surveys, National Center for Health Statistics, Centers for Disease Control and Prevention, 3311 Toledo Road, Room 3416, Hyattsville, MD, 20782, USA.
| | - N Sarafrazi Isfahani
- Division of Health and Nutrition Examination Surveys, National Center for Health Statistics, Centers for Disease Control and Prevention, 3311 Toledo Road, Room 3416, Hyattsville, MD, 20782, USA
| | - B Fan
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
| | - J A Shepherd
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
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Abstract
BACKGROUND Sepsis-induced cardiomyopathy is a well-known cause of mortality. Recent evidence has highlighted the important role of myricetin in anti-inflammation and anti-oxidative stress. However, little is known about its effect on endotoxin-induced cardiomyopathy. We examined the effect of myricetin on lipopolysaccharide (LPS)-induced cardiomyocyte injury and the underlying mechanisms in vitro. METHODS mRNA expression of interleukin (IL)-1beta, IL-6, and tumor necrosis factor (TNF)-alpha was examined via reverse transcription-quantitative polymerase chain reaction (RT-qPCR). Protein expression levels of NF-κB/p65, IκB, IL-1beta, IL-6, and TNF-alpha were assesses via Western blotting. Immunofluorescence (IF) was used to determine the nuclear translocation of p65. Commercial kits were employed to detect the level of oxidative markers and to quantify NF-κB/p65 both in the cytoplasm and the nucleus. Finally, terminal deoxy-nucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) was performed to evaluate the apoptosis of H9c2 cardiomyocytes. RESULTS The results showed that myricetin blunted the overexpression of IL-1beta, IL-6, and TNF-alpha markedly by inhibiting the NF-κB/P65 signaling pathway. Furthermore, myricetin treatment led to the downregulation of reactive oxygen species (ROS) accompanied by increased expression of superoxide dismutase and glutathione peroxidase. TUNEL-positive nuclei were rarely detected following myricetin treatment. CONCLUSION Our findings suggest that myricetin is a valuable protective agent against endotoxin-induced early inflammatory responses in H9c2 cardiomyocytes, which involves regulation of ROS and the IκB/NF-κb signaling pathway.
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Affiliation(s)
- S Chen
- School of Pharmacy, Hubei University of Science and Technology, 437100, Hubei Xianning, China
| | - B Fan
- School of Pharmacy, Hubei University of Science and Technology, 437100, Hubei Xianning, China.
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29
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Fan B, Yin YS, Sun G, Zhu LY, Liu W, Pi XE, Fei DB, Peng LH, Wang X, Yang YS. [Effects of different carbohydrates on the simulation of human intestinal bacterial flora with in vitro culture]. Zhonghua Nei Ke Za Zhi 2017; 55:381-5. [PMID: 27143189 DOI: 10.3760/cma.j.issn.0578-1426.2016.05.010] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate the optimal growth condition of human fecal bacterial flora in vitro by comparing the effect of different carbohydrates as cultural media. METHODS Three fecal samples (1, 2, 3) were collected and inoculated into a single-stage chemostat system, in which starch medium (VI) and starch polysaccharide medium(XP) were used. Samples were collected for bacterial genomic DNA extraction and polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) analysis. Bacterial composition and short chain fatty acid (SCFA) were then analyzed. RESULTS The single stage chemostat system reached steady after operating 8 days, when evaluated by the PCR-DGGE. Bacterial 16s rRNA high-throughput sequencing showed that the intestinal bacteria of these three volunteers was mainly composed of four bacterial phyla, namely, Bacteroidetes, Firmicutes, Proteobacteria and Actinobacteria. When the influence of bacterial abundance was considered, the similarity of bacterial composition between the original fecal samples to the harvested flora after culture was 0.847, 0.825, 0.968 in VI medium and 0.927, 0.926, 0.836 in XP medium, respectively. The similarity was decreased to 0.553, 0.580, 0.623 with VI medium and 0.617, 0.520, 0.574 with XP medium, when the number of bacterial species was considered. The variation of host individual also influenced the simulation. VI medium favored fecal sample 3, while XP medium more benefited sample 1 and 2. Bacteroides and Lachnospiraceae_incertae_sedis grew in both VI and XP medium. However, some species were only detected in VI medium and some were specifically found in the XP medium. The SCFA concentration in fermenters was 15-35 mmol/L, mainly propionate and butyrate. CONCLUSIONS The chemostat system works for stimulating human gut bacterial flora in vitro. The bacterial composition is affected by different carbohydrate in the culture medium yet with close simulation higher than 80%.
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Affiliation(s)
| | - Y S Yin
- Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | | | | | | | | | | | | | | | - Y S Yang
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing 100853, China
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Che L, Fan B, Pilo MG, Xu Z, Liu Y, Cigliano A, Cossu A, Palmieri G, Pascale RM, Porcu A, Vidili G, Serra M, Dombrowski F, Ribback S, Calvisi DF, Chen X. Jagged 1 is a major Notch ligand along cholangiocarcinoma development in mice and humans. Oncogenesis 2016; 5:e274. [PMID: 27918553 PMCID: PMC5177771 DOI: 10.1038/oncsis.2016.73] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [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: 07/25/2016] [Revised: 09/26/2016] [Accepted: 10/10/2016] [Indexed: 02/07/2023] Open
Abstract
Intrahepatic cholangiocarcinoma (ICC) is a rare yet deadly malignancy with limited treatment options. Activation of the Notch signalling cascade has been implicated in cholangiocarcinogenesis. However, while several studies focused on the Notch receptors required for ICC development, little is known about the upstream inducers responsible for their activation. Here, we show that the Jagged 1 (Jag1) ligand is almost ubiquitously upregulated in human ICC samples when compared with corresponding non-tumorous counterparts. Furthermore, we found that while overexpression of Jag1 alone does not lead to liver tumour development, overexpression of Jag1 synergizes with activated AKT signalling to promote liver carcinogenesis in AKT/Jag1 mice. Histologically, tumours consisted exclusively of ICC, with hepatocellular tumours not occurring in AKT/Jag1 mice. Furthermore, tumours from AKT/Jag1 mice exhibited extensive desmoplastic reaction, an important feature of human ICC. At the molecular level, we found that both AKT/mTOR and Notch cascades are activated in AKT/Jag1 ICC tissues, and that the Notch signalling is necessary for ICC development in AKT/Jag1 mice. In human ICC cell lines, silencing of Jag1 via specific small interfering RNA reduces proliferation and increases apoptosis. Finally, combined inhibition of AKT and Notch pathways is highly detrimental for the in vitro growth of ICC cell lines. In summary, our study demonstrates that Jag1 is an important upstream inducer of the Notch signalling in human and mouse ICC. Targeting Jag1 might represent a novel therapeutic strategy for the treatment of this deadly disease.
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Affiliation(s)
- L Che
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, China.,Department of Bioengineering and Therapeutic Sciences and Liver Center, University of California, San Francisco, CA, USA
| | - B Fan
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, China.,Department of Bioengineering and Therapeutic Sciences and Liver Center, University of California, San Francisco, CA, USA
| | - M G Pilo
- Institute of Pathology, University of Greifswald, Greifswald, Germany
| | - Z Xu
- Department of Bioengineering and Therapeutic Sciences and Liver Center, University of California, San Francisco, CA, USA.,Department of Gastroenterology, Guizhou Provincial People's Hospital, The Affiliated People's Hospital of Guizhou Medical University, Guiyang, China
| | - Y Liu
- Department of Gastroenterology, 307 Hospital of PLA, Beijing, China
| | - A Cigliano
- Institute of Pathology, University of Greifswald, Greifswald, Germany
| | - A Cossu
- Unit of Pathology, Azienda Ospedaliero Universitaria Sassari, Sassari, Italy
| | - G Palmieri
- Institute of Biomolecular Chemistry, National Research Council, Sassari, Italy
| | - R M Pascale
- Department of Clinical and Experimental Medicine, University of Sassari, Sassari, Italy
| | - A Porcu
- Department of Clinical and Experimental Medicine, University of Sassari, Sassari, Italy
| | - G Vidili
- Department of Clinical and Experimental Medicine, University of Sassari, Sassari, Italy
| | - M Serra
- Institute of Pathology, University of Greifswald, Greifswald, Germany
| | - F Dombrowski
- Institute of Pathology, University of Greifswald, Greifswald, Germany
| | - S Ribback
- Institute of Pathology, University of Greifswald, Greifswald, Germany
| | - D F Calvisi
- Institute of Pathology, University of Greifswald, Greifswald, Germany.,Department of Clinical and Experimental Medicine, University of Sassari, Sassari, Italy
| | - X Chen
- Department of Bioengineering and Therapeutic Sciences and Liver Center, University of California, San Francisco, CA, USA
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Hu M, Fan B, Ma J, Xue S, Zhao S, Fu Z, Yu J. FLT Positron Emission Tomography/Computed Tomography for Survival Prediction in Patients With High-Grade Glioma Treated With Postoperative Chemoradiation Therapy. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Leghari RA, Fan B, Wang H, Bai J, Zhang L, Abro SH, Jiang P. Full-length genome sequencing analysis of avian infectious bronchitis virus isolate associated with nephropathogenic infection. Poult Sci 2016; 95:2921-2929. [PMID: 27566728 PMCID: PMC7127410 DOI: 10.3382/ps/pew259] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Revised: 04/10/2016] [Accepted: 06/26/2016] [Indexed: 11/20/2022] Open
Abstract
Infectious bronchitis virus (IBV) produces infectious bronchitis (IB) disease in poultry worldwide. In spite of proper vaccinations against the IBV, new IBV strains are continually emerging worldwide. In this study, a new highly virulent nephropathogenic IBV strain named CK/CH/XDC-2/2013 was identified from a vaccinated flock with clinical signs of IB in the Jiangsu province of China. The full-length genome sequence of the isolate was 27,714 nucleotides long, and the genome was organized similarly to classical IBV strains. Minimum divergence, phylogenetic analysis, and distance matrix of the genome showed that the CK/CH/XDC-2/2013 isolate had the highest similarity to the IBV BJ strain. The spike glycoprotein (S) gene had the greatest similarity to the nephropathogenic BJ strain and showed an 8 amino acid insertion (YSNGNSDV) at 73 to 80 sites and 3 amino acid deletion at sites 126 to 128 compared to the IBV vaccine strains. A recombination analysis of the S gene showed that the new isolate evolved from the IBV BJ strain and the KM91 vaccine strain. An animal challenge experiment showed a mortality of 60 to 80% in early-age chickens by different inoculation routes. Pathological examinations of the kidneys revealed inflammation, distention with uric acid deposits, and tubular degeneration. It indicated that the CK/CH/XDC-2/2013 isolate has robust kidney tissue tropism, and new nephropathogenic IBV strains are continuously evolving in China.
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Affiliation(s)
- R A Leghari
- Key Laboratory of Animal Diseases Diagnostic and Immunology, Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China.,Faculty of Animal Husbandry and Veterinary Sciences, Sindh Agriculture University Tandojam, 70050, Pakistan
| | - B Fan
- Key Laboratory of Animal Diseases Diagnostic and Immunology, Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - H Wang
- Key Laboratory of Animal Diseases Diagnostic and Immunology, Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - J Bai
- Key Laboratory of Animal Diseases Diagnostic and Immunology, Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - L Zhang
- Key Laboratory of Animal Diseases Diagnostic and Immunology, Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - S H Abro
- Faculty of Animal Husbandry and Veterinary Sciences, Sindh Agriculture University Tandojam, 70050, Pakistan
| | - P Jiang
- Key Laboratory of Animal Diseases Diagnostic and Immunology, Ministry of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China .,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
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Looker AC, Sarafrazi Isfahani N, Fan B, Shepherd JA. Trabecular bone scores and lumbar spine bone mineral density of US adults: comparison of relationships with demographic and body size variables. Osteoporos Int 2016; 27:2467-75. [PMID: 26952009 PMCID: PMC7593898 DOI: 10.1007/s00198-016-3550-6] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 02/22/2016] [Indexed: 12/12/2022]
Abstract
UNLABELLED This study examines demographic patterns and body size relationships in trabecular bone score and lumbar spine BMD of US adults from NHANES 2005-2008. INTRODUCTION Limited data exist on demographic and body size relationships for trabecular bone score (TBS), a new variable derived from bone texture analysis of lumbar spine dual-energy X-ray absorptiometry (DXA) scans. This study compares demographic patterns and correlations with body size (body mass index (BMI), weight, waist circumference, total body fat, trunk fat, trunk lean) between TBS and lumbar spine bone mineral density (LSBMD) for adults age ≥20 years from the National Health and Nutrition Examination Survey (NHANES) 2005-2008 with BMI in the optimal range for TBS (15-37 kg/m(2)). METHODS LSBMD, TBS, body fat, and lean were obtained by DXA. Weight, height, and waist circumference were measured. BMI was calculated from height and weight. RESULTS Sex differences in TBS varied by age and race/ethnicity (p sex X age interaction and p sex X race/ethnicity interaction < 0.001). In most of the nine demographic subgroups examined, TBS did not differ by sex (four subgroups) or was significantly higher in women (three subgroups). TBS differences by race/ethnicity were inconsistent in men; in women, non-Hispanic whites (NHWs) had higher TBS than non-Hispanic blacks (NHBs) or Mexican Americans (MAs) in all age groups. In contrast, LSBMD was either significantly higher in men (five subgroups) or did not differ by sex (four subgroups). Race/ethnic differences in LSBMD were consistent across age and sex (NHB > NHW > MA). All body size variables were negatively related to TBS but positively related to LSBMD. CONCLUSIONS Demographic patterns and body size relationships differed between TBS and LSBMD.
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Affiliation(s)
- A C Looker
- Division of Health and Nutrition Examination Surveys, National Center for Health Statistics, Centers for Disease Control and Prevention, 3311 Toledo Road, Hyattsville, MD, 20782, USA.
| | - N Sarafrazi Isfahani
- Division of Health and Nutrition Examination Surveys, National Center for Health Statistics, Centers for Disease Control and Prevention, 3311 Toledo Road, Hyattsville, MD, 20782, USA
| | - B Fan
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
| | - J A Shepherd
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
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Hu C, Chan A, Gao L, Ahn MJ, Cohen E, Ang MK, Cheng Y, Hu Q, Kim SB, Li P, Sun Y, Fan B, Cheng G, Ehrnrooth E, Wang CH. 339TiP Phase III study of afatinib vs placebo as adjuvant therapy after chemo-radiotherapy (CRT) in primary unresected patients with locoregionally advanced (LA) head and neck squamous cell carcinoma (HNSCC) in Asia: LUX-Head & Neck 4 (LUX-H&N4). Ann Oncol 2015. [DOI: 10.1093/annonc/mdv527.26] [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: 11/14/2022] Open
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Abstract
The objective of this study was to investigate the expression changes of transforming growth factor β1 (TGF-β1) and Serpine 1 in rats with traumatic deep vein thrombosis (DVT). In total, 60 male Sprague Dawley rats were divided into model (N = 50) and control groups (Group A, N = 10). From the model group, 10 rats were randomly selected after modeling as the pre-thrombosis group (Group B, N = 10), and the remaining 40 rats in the model group were divided into the thrombosis (Group C) and no thrombosis groups (Group D) depending on whether DVT was apparent at 25 h after modeling. All rats were dissected and the total RNAs of the femoral veins were extracted. TGF-β1 and Serpine 1 expression was detected by microarray and polymerase chain reaction (PCR) analyses, and the related signal pathways were analyzed using bioinformatic analysis. Of the 40 rats, DVT was evident in 23, yielding an incidence rate of 57.50%. TGF-β1 and Serpine 1 expression increased significantly at 2.5 h after modeling, while DVT began to form at 25 h after modeling. Both PCR and microarray analysis showed that TGF-β1 and Serpine 1 expression levels were significantly higher in the thrombosis group than in the other groups (P < 0.05). Bioinformatic analysis indicated that TGF-β1 was an upstream regulatory gene of Serpine 1 and could induce Serpine 1 overexpression. Together, these results suggested that TGF-β1 and Serpine 1 overexpression might play an important role in DVT formation and have predictive values.
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Affiliation(s)
- J W Mo
- Department of Orthopedic Surgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, China
| | - D F Zhang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, China
| | - G L Ji
- Department of Orthopedic Surgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, China
| | - X Z Liu
- Department of Orthopedic Surgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, China
| | - B Fan
- Department of Orthopedic Surgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, China
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Chen LX, Hu DJ, Lam SC, Ge L, Wu D, Zhao J, Long ZR, Yang WJ, Fan B, Li SP. Comparison of antioxidant activities of different parts from snow chrysanthemum (Coreopsis tinctoria Nutt.) and identification of their natural antioxidants using high performance liquid chromatography coupled with diode array detection and mass spectrometry and 2,2'-azinobis(3-ethylbenzthiazoline-sulfonic acid)diammonium salt-based assay. J Chromatogr A 2015; 1428:134-42. [PMID: 26521095 DOI: 10.1016/j.chroma.2015.10.037] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 10/10/2015] [Accepted: 10/14/2015] [Indexed: 11/19/2022]
Abstract
Snow chrysanthemum (Coreopsis tinctoria Nutt.), a world-widely well-known flower tea material, has attracted more and more attention because of its beneficial health effects such as antioxidant activity and special flavor. In this study, a high performance liquid chromatography coupled with diode array detection and mass spectrometry (HPLC-DAD-MS) and 2,2'-azinobis(3-ethylbenzthiazoline-sulfonic acid)diammonium salt (ABTS) based assay was employed for comparison and identification of antioxidants in different samples of snow chrysanthemum. The results showed that snow chrysanthemum flowers possessed the highest while stems presented the lowest antioxidant capacities. Fourteen detected peaks with antioxidant activity were temporarily identified as 3,4',5,6,7-pentahydroxyflavanone-O-hexoside, chlorogenic acid, 2R-3',4',8-trihydroxyflavanone-7-O-glucoside, flavanomarein, flavanocorepsin, flavanokanin, quercetagitin-7-O-glucoside, 3',5,5',7-tetrahydroxyflavanone-O-hexoside, marein, maritimein, 1,3-dicaffeoylquinic acid, coreopsin, okanin and acetyl-marein by comparing their UV spectra, retention times and MS data with standards or literature data. Antioxidants existed in snow chrysanthemum are quite different from those reported in Chrysanthemum morifolium, a well-known traditional beverage in China, which indicated that snow chrysanthemum may be a promising herbal tea material with obvious antioxidant activity.
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Affiliation(s)
- L X Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao
| | - D J Hu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao
| | - S C Lam
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao
| | - L Ge
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao
| | - D Wu
- China Science and Technology Exchange Center, Beijing 100045, China
| | - J Zhao
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao.
| | - Z R Long
- Xinjiang Uygur Autonomous Region Product Quality Supervision and Inspection Institute, Urumqi 830011, China
| | - W J Yang
- Xinjiang Uygur Autonomous Region Product Quality Supervision and Inspection Institute, Urumqi 830011, China
| | - B Fan
- Urumqi Jiangqi Agriculture Development Co. Ltd., Urumqi 830011, China
| | - S P Li
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao.
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Abstract
Optogenetics is an exciting new technology that allows targetable fast control and readout of specific neural populations in complex brain circuits. With the rapid development of light-sensitive microbial opsins, substantial gains in understanding the causal relationships between neural activity and behavior in both healthy and diseased brains have been achieved during the last decade. However, the intricate and complex interactions between different neural populations in mammalian brains require novel, implantable, neural interfaces that are capable of manipulating and probing targeted neurons at multiple sites and with high spatiotemporal resolution. Advanced microtechnology has offered the highest potential to meet these demands of optogenetic applications. In this paper, we review a variety of miniaturized optogenetic neural implants developed in recent years, based on different light sources, including lasers, laser diodes, and light-emitting diodes. We then summarize the specifications of these microimplants and their related microfabrication approaches and discuss the major challenges of current techniques and the vision for the future of the field.
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Affiliation(s)
- B Fan
- Electrical and Computer Engineering Department, Michigan State University, East Lansing, MI 48824, USA.
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Wen Y, Lin X, Fan B, Ranjith-Kumar CT, Kao CC. The juxtamembrane sequence of the Hepatitis C virus polymerase can affect RNA synthesis and inhibition by allosteric polymerase inhibitors. Virus Genes 2015; 51:1-11. [PMID: 25895103 DOI: 10.1007/s11262-015-1199-4] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 04/09/2015] [Indexed: 12/21/2022]
Abstract
The Hepatitis C virus (HCV) RNA-dependent RNA polymerase (RdRp), nonstructural protein 5B (NS5B), is anchored in the membrane through a C-terminal helix. A sequence of ca. 12 residues that connects the catalytically competent portion of the RdRp and the C-terminal helix, the juxtamembrane sequence (JMS), has a poorly defined role in RdRp function in a large part since it is translated from a cis-acting RNA element (CRE) that is essential for HCV replication. Using a HCV replicon that transposed a second copy of CRE to the 3' UTR of the HCV replicon, we demonstrate that amino acid substitutions in the JMS were detrimental for HCV replicon replication. Substitutions in the JMS also resulted in a defect in de novo-initiated RNAs synthesis in vitro and in a cell-based reporter assay. A nonnucleoside inhibitor of the NS5B that binds to the catalytic pocket was less potent in inhibiting NS5B in the presence of JMS mutations. The JMS mutants exhibit reduced stability in thermodenaturation assays, suggesting that the JMS helps confer a more stable conformation to NS5B that could impact RNA synthesis.
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Affiliation(s)
- Y Wen
- Department of Molecular and Cellular Biochemistry, Indiana University, Bloomington, IN, 47405, USA
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Mo J, Zhang DF, Ji G, Liu XZ, Fan B. Detection of targets and their mechanisms for early diagnosis of traumatic deep vein thrombosis. Genet Mol Res 2015; 14:2413-21. [DOI: 10.4238/2015.march.27.26] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Chen X, You J, Suo Y, Fan B. Sensitive Determination of Taurine, -Aminobutyric Acid and Ornithine in Wolfberry Fruit and Cortex Lycii by HPLC with Fluorescence Detection and Online Mass Spectrometry Identification. J Chromatogr Sci 2014; 53:492-7. [DOI: 10.1093/chromsci/bmu072] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Fan B, Lim U, Novotny R, Chang L, Le Marchand L, Emst T, Shepherd J. Comparison of Visceral Adipose Tissue Measured by DXA and MRI, and Associations With Blood Biomarkers. J Clin Densitom 2014. [DOI: 10.1016/j.jocd.2014.04.003] [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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Liu Y, Shao C, Fan B, Li S, Wang Y, Zheng J. A simple HPLC method with fluorescence detection for simultaneous determination of 10-methoxycamptothecin and its metabolite 10-hydroxycamptothecin in rat liver tissue. Drug Res (Stuttg) 2014; 65:147-52. [PMID: 24782285 DOI: 10.1055/s-0034-1374635] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
A simple HPLC method to determine the amount of 10-methoxycamptothecin (MCPT) and its major metabolite 10-hydroxycamptothecin (HCPT) in rat liver tissue was developed in the present study. Camptothecin (CPT) was used as internal standard (IS). A piecewise linear function was used over lower and higher concentrations, respectively. The calibration curves were linear (r (2) >0.99) over concentrations from 2.5 to 20 ng/mL and 20 to 320 ng/mL for both MCPT and HCPT. The method had an accuracy of 92.74% to 112.76%, and the intra- and inter-day precision (RSD%) were 11.85% or less for MCPT and HCPT. The stability data showed no significant degradation occurred under the experimental conditions. This method was successfully applied to the tissue distribution study of MCPT and its metabolite HCPT in liver tissue samples after intravenous administration.
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Affiliation(s)
- Y Liu
- Alkali Soil Natural Environmental Science Center, Northeast Forestry University/Key Laboratory of Saline-alkali Vegetation Ecology Restoration in Oil Field, Ministry of Education, Harbin, China
| | - C Shao
- Alkali Soil Natural Environmental Science Center, Northeast Forestry University/Key Laboratory of Saline-alkali Vegetation Ecology Restoration in Oil Field, Ministry of Education, Harbin, China
| | - B Fan
- Alkali Soil Natural Environmental Science Center, Northeast Forestry University/Key Laboratory of Saline-alkali Vegetation Ecology Restoration in Oil Field, Ministry of Education, Harbin, China
| | - S Li
- Jiangsu Food & Pharmaceutical Science College, Huaian, China
| | - Y Wang
- Alkali Soil Natural Environmental Science Center, Northeast Forestry University/Key Laboratory of Saline-alkali Vegetation Ecology Restoration in Oil Field, Ministry of Education, Harbin, China
| | - J Zheng
- Alkali Soil Natural Environmental Science Center, Northeast Forestry University/Key Laboratory of Saline-alkali Vegetation Ecology Restoration in Oil Field, Ministry of Education, Harbin, China
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Huang D, Qian JY, Ge L, Wang QB, Fan B, Yan Y, Zhang F, Ma JY, Yao K, Ge J. Effects of different route of intracoronary infusion of verapamil on no-reflow phenomenon during percutaneous coronary intervention in patients with acute myocardial infarction. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p3974] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ni C, Li Z, Jin Y, Fan B, Yang C. Balloon-assisted catheter-directed thrombolysis for acute lower extremity deep vein thrombosis. J Vasc Interv Radiol 2013. [DOI: 10.1016/j.jvir.2013.01.190] [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: 11/16/2022] Open
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Renaville B, Prandi A, Fan B, Sepulcri A, Rothschild M, Piasentier E. Candidate gene marker associations with fatty acid profiles in heavy pigs. Meat Sci 2013; 93:495-500. [DOI: 10.1016/j.meatsci.2012.11.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Revised: 08/02/2012] [Accepted: 11/10/2012] [Indexed: 01/05/2023]
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Geronazzo-Alman L, Spratt A, Shen S, Guffanti G, Lord E, Duarte C, Musa G, Wicks J, Fan B, Hoven C. 2007 – An item response theory analysis of post-traumatic stress disorder symptoms measured with two instruments in 6,733 9/11-exposed youth. Eur Psychiatry 2013. [DOI: 10.1016/s0924-9338(13)76942-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Fan B, Ye W, Xie E, Wu H, Gutmann JL. Three-dimensional morphological analysis of C-shaped canals in mandibular first premolars in a Chinese population. Int Endod J 2012; 45:1035-41. [DOI: 10.1111/j.1365-2591.2012.02070.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Wu Y, Chen H, Fan B, Wang B, Shi W. Transsphenoidal Meningoencephalocele: Challenge of Early Transsphenoidal Repair. Skull Base Surg 2012. [DOI: 10.1055/s-0032-1313948] [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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Wu Y, Sun J, Li J, Fan B. Radical Resection of Malignant Tumor Invading the Skull Base with Combined Intra- and Extracranial Approach. Skull Base Surg 2012. [DOI: 10.1055/s-0032-1314244] [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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Meng Z, Yang S, Fan B, Wang L, Lin H. Genetic variation and balancing selection at MHC class II exon 2 in cultured stocks and wild populations of orange-spotted grouper (Epinephelus coioides). Genet Mol Res 2012; 11:3869-81. [DOI: 10.4238/2012.november.12.4] [Citation(s) in RCA: 2] [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: 11/03/2022]
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