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Yu H, Qiu S, Cheng F, Cheng YN, Wang YJ, Zheng YG. Improving the catalytic efficiency of aldo-keto reductase KmAKR towards t-butyl 6-cyano-(3R,5R)-dihydroxyhexanoate via semi-rational design. Bioorg Chem 2019; 90:103018. [DOI: 10.1016/j.bioorg.2019.103018] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 05/25/2019] [Accepted: 05/28/2019] [Indexed: 01/08/2023]
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Adams LK, Qiu S, Hunt AK, Monahan KJ. A dedicated high-quality service for the management of patients with an inherited risk of colorectal cancer. Colorectal Dis 2019; 21:879-885. [PMID: 30903731 DOI: 10.1111/codi.14622] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Accepted: 02/27/2019] [Indexed: 12/27/2022]
Abstract
AIM To demonstrate the quality improvement associated with the implementation of a specialist family history of bowel cancer service in secondary care. METHOD The following outcomes were assessed: (1) adherence to the British Society of Gastroenterology (BSG) guidelines for colonoscopic surveillance of individuals with a family history of colorectal cancer (CRC); (2) adherence to the revised Bethesda criteria for the identification of CRC patients with suspected Lynch syndrome; (3) identification of inherited syndromes with increased CRC risk; and (4) colonoscopic adenoma detection rate. Data were collected for a 21-month period before and after the establishment of this service for all patients who underwent colonoscopic surveillance for a family history of CRC and all patients newly diagnosed with CRC. Analyses compared the number of colonoscopies performed that were not indicated by BSG guidelines, the average number of years early that patients were screened, the adenoma detection rate and the rate of tumour testing for mismatch repair genes before and after the implementation of the service. RESULTS Following the establishment of the service there was a reduction in the number of colonoscopies not indicated by BSG guidelines (39.6% before and 5.8% after, P < 0.001, chi-square test) and surveillance colonoscopy took place at a more appropriate age (10.6 years too early before and 5.9 years early after, P = 0.01, t-test). There was an increased adenoma detection rate (17% before and 31.9% after, P < 0.01, chi-square test) and increased tumour MMR testing (3.4% before and 91.8% after, P < 0.01, chi-square test). CONCLUSION The introduction of a family history of bowel cancer service results in improved patient care through improved adherence to guidelines for colonoscopic surveillance and increased cancer detection rates.
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Zhang J, Zhang D, Wei J, Shi X, Ding H, Qiu S, Guo J, Li D, Zhu K, Horvath DP, Xia Y. Annual growth cycle observation, hybridization and forcing culture for improving the ornamental application of Paeonia lactiflora Pall. in the low-latitude regions. PLoS One 2019; 14:e0218164. [PMID: 31194806 PMCID: PMC6564672 DOI: 10.1371/journal.pone.0218164] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 05/28/2019] [Indexed: 11/19/2022] Open
Abstract
Expanding the southern range of herbaceous peony (Paeonia lactiflora Pall.) is a meaningful and worthwhile horticultural endeavor in the Northern Hemisphere. However, high temperatures in winter seriously hinder the bud dormancy release and flowering of peony in the more southern areas of subtropical and tropical regions. Resource introduction and hybridization can contribute to creating new cultivars with high adaptability in a warmer winter climate. In this study, three representative cultivars of P. lactiflora were screened for flowering capabilities and their annual growth cycles were observed to provide information needed for hybridization. Among these three cultivars, ‘Hang Baishao’ is the best adapted cultivar for southern growing regions and is unique in its ability to thrive in southern areas of N 30°00’. Pollen viability of ‘Hang Baishao’ was 55.60% based on five measuring methods, which makes it an excellent male parent in hybridization. Hybrid plants among these three cultivars grew well, but all of their flower buds aborted. Additionally, the ability of three growth regulators that advance the flowering of ‘Hang Baishao’ to promote an indoor cultivation strategy for improving peony application as a potted or cut-flower plant was tested. 5-azacytidine could impact the growth of ‘Hang Baishao’ and induce dwarfism and small flowers but not advance the flowering time. Gibberellin A3 promoted the sprouting and growth significantly, but all plants eventually withered. Chilling at 0–4°C for four weeks and irrigation with 300 mg/L humic acid was the optimal combination used to hasten flowering and ensure flowering quality simultaneously. These results can lay the foundation for future studies on the chilling requirement trait, bud dormancy release and key functional gene exploration of herbaceous peony. Additionally, this study can also provide guidance for expanding the range of economically important plants with the winter dormancy trait to the low-latitude regions.
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Chen S, Du Z, Zou J, Qiu S, Rao Z, Liu S, Sun X, Xu Y, Zhu Q, Liu X, Mao HQ, Bai Y, Quan D. Promoting Neurite Growth and Schwann Cell Migration by the Harnessing Decellularized Nerve Matrix onto Nanofibrous Guidance. ACS APPLIED MATERIALS & INTERFACES 2019; 11:17167-17176. [PMID: 31002219 DOI: 10.1021/acsami.9b01066] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Synergistic intercellular interactions have been widely acknowledged in tuning functional cell behaviors in vivo, and these interactions have inspired the development of a variety of scaffolds for regenerative medicine. In this paper, the promotion of Schwann cell (SC)-neurite interactions through the use of a nerve extracellular matrix-coated nanofiber composite in vitro was demonstrated using a cell culturing platform consisting of either random or aligned electrospun poly(l-lactic acid) nanofibers and decellularized peripheral nerve matrix gel (pDNM gel) from porcine peripheral nervous tissue. The pDNM-coated nanofiber platform served as a superior substrate for dorsal root ganglion culturing. Furthermore, SC migration was facilitated by pDNM gel coating on the nanofibers, accompanied with much faster axonal extension, in comparison with the effect of topographical guidance from the aligned electrospun fibers only. Finally, the decellularized nerve matrix promoted the ability of SCs to wrap around bundled neurites, triggering axonal remyelination toward nerve fiber functionalization.
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Gong T, Xu J, Heng B, Qiu S, Yi B, Han Y, Lo ECM, Zhang C. EphrinB2/EphB4 Signaling Regulates DPSCs to Induce Sprouting Angiogenesis of Endothelial Cells. J Dent Res 2019; 98:803-812. [PMID: 31017515 DOI: 10.1177/0022034519843886] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Dental pulp stem cells (DPSCs) are capable of facilitating angiogenesis resembling pericytes when located adjacent to endothelial cells (ECs). Nevertheless, the precise mechanisms orchestrating their proangiogenic functions remain unclear. Using a 3-dimensional (3-D) fibrin gel model, we aimed to investigate whether EphrinB2/EphB4 signaling in DPSCs plays a role in supporting vascular morphogenesis mediated by ECs, together with the underlying mechanism involved. The EphrinB2/EphB4 signaling was inhibited either by a pharmacological inhibitor of EphB4 receptor or by knocking down the expressions of EphrinB2 and EphB4 using lentiviral small hairpin RNA (shRNA). DPSCs were either encapsulated in fibrin gel together with human umbilical vein endothelial cells (HUVECs) or cultured as a monolayer on top of HUVECs to investigate both paracrine and juxtacrine interactions simultaneously. Following 10 d of direct coculture, we found that pharmacological inhibition of EphrinB2/EphB4 signaling severely impaired vessel formation and laminin deposition. When directly cocultured with HUVECs, knockdown of EphrinB2 or EphB4 in DPSCs significantly inhibited endothelial sprouting, resulting in less capillary sprouts with reduced vessel length (P < 0.05). By contrast, when DPSCs were not in direct contact with HUVECs, attenuation of EphrinB2 or EphB4 expression levels in DPSCs did not exert any significant effects on capillary morphogenesis. Noticeably, exogenous stimulation with soluble EphrinB2-Fc or EphB4-Fc (1 µg/mL) enhanced vascular endothelial growth factor (VEGF) secretion from DPSCs, thereby moderately promoting angiogenic cascades in the fibrin matrix. This study, for the first time, reveals a crucial role of EphrinB2/EphB4 signaling in regulating the capacity of DPSCs to induce sprouting angiogenesis. These findings advance our understanding of postnatal angiogenesis and may have future regenerative medicine applications.
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Yang J, Wang F, Chen X, Qiu S, Cui L, Hu L. β-Pentagalloyl-Glucose Sabotages Pancreatic Cancer Cells and Ameliorates Cachexia in Tumor-Bearing Mice. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2019; 47:675-689. [PMID: 30966770 DOI: 10.1142/s0192415x19500356] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Pancreatic cancer cells overexpress the insulin receptor (IR) and the insulin-like growth factor-1 receptor (IGF1R). Activating these receptors, insulin and insulin-like growth factor-1 increase the growth and glycolysis of pancreatic cancer cells. The high glycolysis in pancreatic cancer cells increases whole-body energy expenditure and is therefore involved in the pathogenesis of cancer cachexia. The antagonism of IR and IGF1R may sabotage pancreatic cancer cells and attenuate cancer cachexia. Previous studies have shown that the intracellular regulating system of IR/IGF1R may be functionally interrelated to another intracellular system whose master regulator is hypoxia-inducible factor-1 (HIF-1). In this study, we investigated how the IR/IGF1R and HIF-1 systems are interrelated in pancreatic cancer cells. We also investigated whether a phytochemical, penta-O-galloyl- β -D-glucose ( β -PGG), antagonizes IR/IGF1R, sabotages pancreatic cancer cells and alleviates cancer cachexia. We found in MiaPaCa2 pancreatic cancer cells that IR/IGF1R activation increased both the α -subunit of HIF-1 and caveolin-1. This result suggests that IR/IGF1R, HIF-1 α , and caveolin-1 may constitute a feed-forward loop to mediate the effect of IR/IGF1R activation. β -PGG inhibited IR/IGF1R activity and decreased glycolytic enzymes in MiaPaCa2 and Panc-1 pancreatic cancer cells. When MiaPaCa2 cells were transplanted in athymic mice, their growth was inhibited by β -PGG or by a HIF-1 α inhibitor, rhein. β -PGG and rhein also decreased glycolytic enzymes in the tumor grafts and reduced liver gluconeogenesis, skeletal-muscle proteolysis and fat lipolysis in the tumor carriers. Cancer-induced body-weight loss, however, was prevented by β -PGG but not rhein. In conclusion, β -PGG combats pancreatic cancer cells and cures cancer cachexia.
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Xiao H, Zhu XW, Chen XG, Yang Y, Dou GF, Wang WW, Niu XX, Qiu S, Li CF, Niu YJ. [Correlation between CTL and Th1 cell proportion in peripheral blood of liver transplantation recipients and the success of hepatitis B vaccination]. ZHONGHUA YI XUE ZA ZHI 2019; 99:611-615. [PMID: 30818931 DOI: 10.3760/cma.j.issn.0376-2491.2019.08.009] [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 investigate the correlation between the proportion of CTL and Th1 cells in peripheral blood of liver transplant recipients and the success of hepatitis B vaccination. Methods: The subjects of this study were liver transplantation recipients with chronic HBV-related liver diseases in Organ transplantation institute of the third medical center of PLA general hospital. Subjects were randomly divided into two groups for prospective study. In the rapid group, one dose of 40 μg hepatitis B vaccine was administered at 0, 1, 2and 3 months, and one dose of 20 μg hepatitis B vaccine was administered at 4, 5 and 6 months. In the rapid-enhanced group, one dose of 40 μg hepatitis B vaccine was administered at 0, 1, 2 and 3 months, and one dose of 60 μg hepatitis B vaccine was administered at 4, 5 and 6months. Compare and analyze the success rate of inoculation, the titer of hepatitis B surface antibody (anti-HBs), the proportion of CTL cells in CD8(+)T cells and Th1 cells in CD4(+)T cells. Correlation analysis was performed for CTL and Th1 cells and anti-HBs, Observe the safety of vaccination. Results: The inoculation success rate, anti-HBs growth rate, CTL cell percentage increase and Th1 cell percentage increase in the rapid enhancement group were all higher than those in the rapid enhancement group, and the differences were statistically significant, they were 38.3% (23/60) vs 21.7% (13/60) (P=0.046), 91.3(72.5,124.2) vs 22.1(12.4, 31.6) (P=0.001), 1.4(0.8,1.9) vs 0.4(0.2,1.4) (P=0.001) and 7.4±2.6 vs 5.6±3.7 (P=0.001) respectively. The percentage increase of CTL cells and Th1 cells in the successful group was greater than that in the non-successful group, and the difference was statistically significant. They were 1.9(1.4,2.5) vs 0.1(0.0,1.1) (P=0.024) and 9.6±3.1 vs 2.4±2.0 (P<0.001). There was no significant correlation between anti-HBs increase (105.5±37.1) and CTL increase 1(0,3) (P=0.099), while there was significant positive correlation with Th1 increase 7(2,11) (P<0.001). No rejection reaction occurred during the study period, and there was no special abnormal change in the safety index. Conclusion: Reasonable increase of vaccine dose can up-regulate Th1 cell expression and promote the generation of anti-HBs.
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Zügel M, Wehrstein F, Qiu S, Diel P, Steinacker JM, Schumann U. Moderate intensity continuous training reverses the detrimental effects of ovariectomy on RyR1 phosphorylation in rat skeletal muscle. Mol Cell Endocrinol 2019; 481:1-7. [PMID: 30465874 DOI: 10.1016/j.mce.2018.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 10/12/2018] [Accepted: 11/12/2018] [Indexed: 10/27/2022]
Abstract
High 17β-Estradiol (E2) concentrations in isolated ventricular myocytes as well as a lack of ovarian hormones in cardiac muscle of ovariectomized (OVX) rodents has been shown to lead to arrhythmogenic effects by inducing post-translational modifications, including phosphorylation of the sarcoplasmic reticulum (SR) Ca2+ release channel ryanodine receptor-2 (RyR2). The effects of estrogens on the phosphorylation status of the RyR1 in skeletal muscle have not been investigated before. Furthermore, while high intensity exercise has been shown to increase RyR phosphorylation, there is no data on the effects of moderate intensity continuous training (MICT). The aims of the study were to investigate the effects of a 3-day treatment with low (1 nM, moderate (5 nM) and high (10 nM, 100 nM) E2 concentrations on RyR1 mRNA and protein expression and phosphorylation status (pRyRSer2844) in cultured C2C12 myotubes and to study the effects of OVX on RyR1 expression and phosphorylation in rat skeletal muscle in combination with 3 weeks of MICT. Treatment with low, physiological E2 concentrations reduced dihydropyridine receptor (DHPR) and RyR1 mRNA content in C2C12 myotubes compared to untreated control cells, whereas RyR1 protein phosphorylation (pRyRSer2844) was significantly increased after treatment with high, non-physiological E2 concentrations (p ≤ 0.05). RyR1 protein content (p ≤ 0.05) and pRyRSer2844 (p ≤ 0.05) were significantly elevated in skeletal muscle of OVX vs. sham-operated rats. Importantly, pRyRSer2844 levels were similar to sham-operated controls in OVX rats after MICT (OVX vs. OVX + MICT, p ≤ 0.05). Our results indicate, that one of the actions of estrogens is to alter skeletal muscle Ca2+ homeostasis by modulating the expression and phosphorylation of the RyR1 in skeletal muscle. Notably, regular MICT was able to counteract RyR1 phosphorylation in skeletal muscle of OVX rats.
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Liu L, Qiu S, Liu Y, Liu Z, Zheng Y, Su X, Chen B, Chen H. Chidamide and 5-flurouracil show a synergistic antitumor effect on human colon cancer xenografts in nude mice. Neoplasma 2019; 63:193-200. [PMID: 26774139 DOI: 10.4149/203_150422n214] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Chidamide is a novel histone deacetylase (HDAC) inhibitor that increases the acetylation of histone H3 by inhibiting the activity of HDAC1 and HDAC2. We previously found that treatment of human colon cancer cells with chidamide led to cell apoptosis and cell cycle arrest at G0/1 phase in vitro. The present study extended the observations in vivo and explored the underlying molecular mechanisms. In nude mice bearing human colon cancer LoVo cell xenografts, chidamide alone or in combination with 5-flurouracil (5-Fu) reduced the expression of HDAC1 and HDAC2, accompanied with increased acetylation of histone H3. Chidamide alone inhibited the tumor growth and induce cell apoptosis in tumor-bearing mice. Combined treatment of chidamide with 5-Fu enhanced the anti-tumor activity of 5-Fu. Western blotting analysis showed that chidamide alone or in combination with 5-Fu upregulated the expressions of cleaved Caspase-3 and cleaved poly-ADP (adenosine diphosphate)-ribose polymerase (PARP). In addition, chidamide alone or in combination with 5-Fu increased the p53, phosphorylated-p53 (p-p53), p21 and γH2AX levels, but suppressed cyclin dependent kinase 4 (CDK4) expression in tumor cells. Chidamide alone or in combination with 5-Fu down regulated the expressions of p-AKT, p-mammalian target of rapamycin (mTOR), p-p70S6K, p-Raf, and p44/42 mitogen activated protein kinase (Erk1/2), indicating the blockage of these signaling pathways. The results demonstrated that chidamide alone or in combination with 5-Fu exerted anti-tumor activity in nude mice bearing human colon cancer LoVo cell xenografts, and several signaling pathways might be involved in the chidamide-induced tumor growth inhibition and tumor cell apoptosis.
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Chen J, Bao C, Kim JT, Cho JS, Qiu S, Lee HJ. Sulforaphene Inhibition of Adipogenesis via Hedgehog Signaling in 3T3-L1 Adipocytes. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:11926-11934. [PMID: 30354116 DOI: 10.1021/acs.jafc.8b04330] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Obesity is a risk factor for numerous metabolic disorders. In this study, we investigated the effects of the isothiocyanates sulforaphane (SA) and sulforaphene (SE) on adipogenesis in 3T3-L1 adipocytes. SE, a compound that is abundant in radish, inhibited adipogenesis by suppressing the adipogenic transcription factors peroxisome proliferator-activated receptor γ (PPARγ, 69.2 ± 2.4%, P < 0.05) and CCAAT/enhancer-binding protein α (C/EBPα, 36.1 ± 3.1%, P < 0.05), thereby reducing fat accumulation in 3T3-L1 adipocytes (45.6 ± 2.7%, P < 0.05); SA was less effective. SE exerted these activities through the activation of the Hedgehog (Hh) signaling pathway by restoring Smo ((2.1 ± 0.2)-fold, P < 0.05) and Gli1 ((2.8 ± 0.1)-fold, P < 0.05) expression, which was suppressed by adipogenic signals. These effects of SE were abrogated by treatment with the Hh inhibitor vismodegib. Thus, SE inhibits adipocyte differentiation via Hh signaling and may be an effective natural agent for preventing adipocyte hyperplasia and obesity.
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Chen X, Wang S, Liu C, Chen J, Wang D, Huang M, Song J, Cai S, Qiu S. A novel cost-effective method for diagnosis of bladder cancer by detecting ErbB3 expression in urine. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy435.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Li B, Qiu S. A phase Ia study of a personalized TSA-CTL (tumor specific antigen-induced cytotoxic T lymphocytes) therapy in metastatic melanoma. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy288.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Qiu S, Pellino G, Warren OJ, Mills S, Goldin R, Kontovounisios C, Tekkis PP. Mixed adenoneuroendocrine carcinoma of the colon and rectum. Acta Chir Belg 2018; 118:273-277. [PMID: 29911510 DOI: 10.1080/00015458.2018.1482697] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Mixed adenoneuroendocrine carcinoma (MANEC) are rare cancers of the gastrointestinal (GI) and pancreatobiliary tract. They are characterized by the presence of a combination of epithelial and neuroendocrine elements, where each component represents at least 30% of the tumour. Review of literature and consolidation of clinicopathological data. Sixty-one cases of colorectal MANEC have been reported in literature and one seen in this centre. The median age of the patients affected was 61.9 ± 12.4 years (20-94 years). Male to female ratio is 1.0:1.2. Presentations were similar to other colorectal malignancies. 58.0% of colorectal MANECs were found in the right colon, 8.1% cases in the transverse, 16.1% in the left colon, 16.1% in the rectum. These tumours appeared invasiveness 79.1% were T3-T4. Over 90% of cases were presented with metastatic disease. The majority of patient underwent surgical resection of the primary cancer (96.6%). Of these, 10 operations (17.9%) were emergency operations due to obstruction, perforation, or bleeding. Three patients received first line palliative care. In eight cases (13.8%), patients underwent adjuvant chemotherapy. The median overall survival after diagnosis was 10 ± 2.4 months (95% CI: 5.37-14.64 months). MANECs are rare but aggressive colorectal cancers. Surgical resection of localized disease with adjuvant chemotherapy appears to significantly improve survival in small case series. Further understanding through the sharing of experiences is required.
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Zhao X, Ju X, Qiu S, Hu W, Yang L, Zhang J. Fast and Sensitive Detection of Diisononyl Phthalate in Liquor Sample by Molecularly Imprinted Polymer Based Electrochemical Sensor. RUSS J ELECTROCHEM+ 2018. [DOI: 10.1134/s1023193518080074] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Luzietti E, Pellino G, Nikolaou S, Qiu S, Mills S, Warren O, Tekkis P, Kontovounisios C. Comparison of guidelines for the management of rectal cancer. BJS Open 2018; 2:433-451. [PMID: 30511044 PMCID: PMC6254003 DOI: 10.1002/bjs5.88] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 05/18/2018] [Indexed: 12/12/2022] Open
Abstract
A comparison between NCCN, ESMO and JSCCR Guidelines is presented, concerning the treatment of rectal cancer, with an analysis and discussion of their discrepancies. Differences indicate areas for research.
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Lin T, Liu S, Chen S, Qiu S, Rao Z, Liu J, Zhu S, Yan L, Mao H, Zhu Q, Quan D, Liu X. Hydrogel derived from porcine decellularized nerve tissue as a promising biomaterial for repairing peripheral nerve defects. Acta Biomater 2018; 73:326-338. [PMID: 29649641 DOI: 10.1016/j.actbio.2018.04.001] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Revised: 03/29/2018] [Accepted: 04/02/2018] [Indexed: 12/24/2022]
Abstract
Decellularized matrix hydrogels derived from tissues or organs have been used for tissue repair due to their biocompatibility, tunability, and tissue-specific extracellular matrix (ECM) components. However, the preparation of decellularized peripheral nerve matrix hydrogels and their use to repair nerve defects have not been reported. Here, we developed a hydrogel from porcine decellularized nerve matrix (pDNM-G), which was confirmed to have minimal DNA content and retain collagen and glycosaminoglycans content, thereby allowing gelatinization. The pDNM-G exhibited a nanofibrous structure similar to that of natural ECM, and a ∼280-Pa storage modulus at 10 mg/mL similar to that of native neural tissues. Western blot and liquid chromatography tandem mass spectrometry analysis revealed that the pDNM-G consisted mostly of ECM proteins and contained primary ECM-related proteins, including fibronectin and collagen I and IV). In vitro experiments showed that pDNM-G supported Schwann cell proliferation and preserved cell morphology. Additionally, in a 15-mm rat sciatic nerve defect model, pDNM-G was combined with electrospun poly(lactic-acid)-co-poly(trimethylene-carbonate)conduits to bridge the defect, which did not elicit an adverse immune response and promoted the activation of M2 macrophages associated with a constructive remodeling response. Morphological analyses and electrophysiological and functional examinations revealed that the regenerative outcomes achieved by pDNM-G were superior to those by empty conduits and closed to those using rat decellularized nerve matrix allograft scaffolds. These findings indicated that pDNM-G, with its preserved ECM composition and nanofibrous structure, represents a promising biomaterial for peripheral nerve regeneration. STATEMENT OF SIGNIFICANCE Decellularized nerve allografts have been widely used to treat peripheral nerve injury. However, given their limited availability and lack of bioactive factors, efforts have been made to improve the efficacy of decellularized nerve allograft for nerve regeneration, with limited success. Xenogeneic decellularized tissue matrices or hydrogels have been widely used for surgical applications owing to their ease of harvesting and low immunogenicity. Moreover, decellularized tissue matrix hydrogels show good biocompatibility and are highly tunable. In this study, we prepared a porcine decellularized nerve matrix (pDNM-G) and evaluated its potential for promoting nerve regeneration. Our results demonstrate that pDNM-G can support Schwann cell proliferation and peripheral nerve regeneration by means of residual primary extracellular matrix components and nano-fibrous structure features.
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Zou JL, Sun JH, Qiu S, Chen SH, He FL, Li JC, Mao HQ, Liu XL, Quan DP, Zeng YS, Zhu QT. Spatial distribution affects the role of CSPGs in nerve regeneration via the actin filament-mediated pathway. Exp Neurol 2018; 307:37-44. [PMID: 29852179 DOI: 10.1016/j.expneurol.2018.05.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 05/24/2018] [Accepted: 05/27/2018] [Indexed: 11/28/2022]
Abstract
CSPGs are components of the extracellular matrix in the nervous system, where they serve as cues for axon guidance during development. After a peripheral nerve injury, CSPGs switch roles and become axon inhibitors and become diffusely distributed at the injury site. To investigate whether the spatial distribution of CSPGs affects their role, we combined in vitro DRG cultures with CSPG stripe or coverage assays to simulate the effect of a patterned substrate or dispersive distribution of CSPGs on growing neurites. We observed neurite steering at linear CSPG interfaces and neurite inhibition when diffused CSPGs covered the distal but not the proximal segment of the neurite. The repellent and inhibitory effects of CSPGs on neurite outgrowth were associated with the disappearance of focal actin filaments on growth cones. The application of an actin polymerization inducer, jasplakinolide, allowed neurites to break through the CSPG boundary and grow on CSPG-coated surfaces. The results of our study collectively reveal a novel mechanism that explains how the spatial distribution of CSPGs determines whether they act as a cue for axon guidance or as an axon-inhibiting factor. Increasing our understanding of this issue may promote the development of novel therapeutic strategies that regulate the spatial distributions of CSPGs to use them as an axon guidance cue.
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Lin T, Qiu S, Yan L, Zhu S, Zheng C, Zhu Q, Liu X. Miconazole enhances nerve regeneration and functional recovery after sciatic nerve crush injury. Muscle Nerve 2018; 57:821-828. [PMID: 29211920 DOI: 10.1002/mus.26033] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 11/28/2017] [Accepted: 12/02/2017] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Improving axonal outgrowth and remyelination is crucial for peripheral nerve regeneration. Miconazole appears to enhance remyelination in the central nervous system. In this study we assess the effect of miconazole on axonal regeneration using a sciatic nerve crush injury model in rats. METHODS Fifty Sprague-Dawley rats were divided into control and miconazole groups. Nerve regeneration and myelination were determined using histological and electrophysiological assessment. Evaluation of sensory and motor recovery was performed using the pinprick assay and sciatic functional index. The Cell Counting Kit-8 assay and Western blotting were used to assess the proliferation and neurotrophic expression of RSC 96 Schwann cells. RESULTS Miconazole promoted axonal regrowth, increased myelinated nerve fibers, improved sensory recovery and walking behavior, enhanced stimulated amplitude and nerve conduction velocity, and elevated proliferation and neurotrophic expression of RSC 96 Schwann cells. DISCUSSION Miconazole was beneficial for nerve regeneration and functional recovery after peripheral nerve injury. Muscle Nerve 57: 821-828, 2018.
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Abbott BP, Abbott R, Abbott TD, Acernese F, Ackley K, Adams C, Adams T, Addesso P, Adhikari RX, Adya VB, Affeldt C, Afrough M, Agarwal B, Agathos M, Agatsuma K, Aggarwal N, Aguiar OD, Aiello L, Ain A, Ajith P, Allen G, Allocca A, Altin PA, Amato A, Ananyeva A, Anderson SB, Anderson WG, Antier S, Appert S, Arai K, Araya MC, Areeda JS, Arnaud N, Arun KG, Ascenzi S, Ashton G, Ast M, Aston SM, Astone P, Aufmuth P, Aulbert C, AultONeal K, Avila-Alvarez A, Babak S, Bacon P, Bader MKM, Bae S, Baker PT, Baldaccini F, Ballardin G, Ballmer SW, Banagiri S, Barayoga JC, Barclay SE, Barish BC, Barker D, Barone F, Barr B, Barsotti L, Barsuglia M, Barta D, Bartlett J, Bartos I, Bassiri R, Basti A, Batch JC, Baune C, Bawaj M, Bazzan M, Bécsy B, Beer C, Bejger M, Belahcene I, Bell AS, Berger BK, Bergmann G, Berry CPL, Bersanetti D, Bertolini A, Betzwieser J, Bhagwat S, Bhandare R, Bilenko IA, Billingsley G, Billman CR, Birch J, Birney R, Birnholtz O, Biscans S, Bisht A, Bitossi M, Biwer C, Bizouard MA, Blackburn JK, Blackman J, Blair CD, Blair DG, Blair RM, Bloemen S, Bock O, Bode N, Boer M, Bogaert G, Bohe A, Bondu F, Bonnand R, Boom BA, Bork R, Boschi V, Bose S, Bouffanais Y, Bozzi A, Bradaschia C, Brady PR, Braginsky VB, Branchesi M, Brau JE, Briant T, Brillet A, Brinkmann M, Brisson V, Brockill P, Broida JE, Brooks AF, Brown DA, Brown DD, Brown NM, Brunett S, Buchanan CC, Buikema A, Bulik T, Bulten HJ, Buonanno A, Buskulic D, Buy C, Byer RL, Cabero M, Cadonati L, Cagnoli G, Cahillane C, Calderón Bustillo J, Callister TA, Calloni E, Camp JB, Canepa M, Canizares P, Cannon KC, Cao H, Cao J, Capano CD, Capocasa E, Carbognani F, Caride S, Carney MF, Casanueva Diaz J, Casentini C, Caudill S, Cavaglià M, Cavalier F, Cavalieri R, Cella G, Cepeda CB, Cerboni Baiardi L, Cerretani G, Cesarini E, Chamberlin SJ, Chan M, Chao S, Charlton P, Chassande-Mottin E, Chatterjee D, Cheeseboro BD, Chen HY, Chen Y, Cheng HP, Chincarini A, Chiummo A, Chmiel T, Cho HS, Cho M, Chow JH, Christensen N, Chu Q, Chua AJK, Chua S, Chung AKW, Chung S, Ciani G, Ciolfi R, Cirelli CE, Cirone A, Clara F, Clark JA, Cleva F, Cocchieri C, Coccia E, Cohadon PF, Colla A, Collette CG, Cominsky LR, Constancio M, Conti L, Cooper SJ, Corban P, Corbitt TR, Corley KR, Cornish N, Corsi A, Cortese S, Costa CA, Coughlin MW, Coughlin SB, Coulon JP, Countryman ST, Couvares P, Covas PB, Cowan EE, Coward DM, Cowart MJ, Coyne DC, Coyne R, Creighton JDE, Creighton TD, Cripe J, Crowder SG, Cullen TJ, Cumming A, Cunningham L, Cuoco E, Canton TD, Danilishin SL, D'Antonio S, Danzmann K, Dasgupta A, Da Silva Costa CF, Dattilo V, Dave I, Davier M, Davis D, Daw EJ, Day B, De S, DeBra D, Degallaix J, De Laurentis M, Deléglise S, Del Pozzo W, Denker T, Dent T, Dergachev V, De Rosa R, DeRosa RT, DeSalvo R, Devenson J, Devine RC, Dhurandhar S, Díaz MC, Di Fiore L, Di Giovanni M, Di Girolamo T, Di Lieto A, Di Pace S, Di Palma I, Di Renzo F, Doctor Z, Dolique V, Donovan F, Dooley KL, Doravari S, Dorrington I, Douglas R, Dovale Álvarez M, Downes TP, Drago M, Drever RWP, Driggers JC, Du Z, Ducrot M, Duncan J, Dwyer SE, Edo TB, Edwards MC, Effler A, Eggenstein HB, Ehrens P, Eichholz J, Eikenberry SS, Eisenstein RA, Essick RC, Etienne ZB, Etzel T, Evans M, Evans TM, Factourovich M, Fafone V, Fair H, Fairhurst S, Fan X, Farinon S, Farr B, Farr WM, Fauchon-Jones EJ, Favata M, Fays M, Fehrmann H, Feicht J, Fejer MM, Fernandez-Galiana A, Ferrante I, Ferreira EC, Ferrini F, Fidecaro F, Fiori I, Fiorucci D, Fisher RP, Flaminio R, Fletcher M, Fong H, Forsyth PWF, Forsyth SS, Fournier JD, Frasca S, Frasconi F, Frei Z, Freise A, Frey R, Frey V, Fries EM, Fritschel P, Frolov VV, Fulda P, Fyffe M, Gabbard H, Gabel M, Gadre BU, Gaebel SM, Gair JR, Gammaitoni L, Ganija MR, Gaonkar SG, Garufi F, Gaudio S, Gaur G, Gayathri V, Gehrels N, Gemme G, Genin E, Gennai A, George D, George J, Gergely L, Germain V, Ghonge S, Ghosh A, Ghosh A, Ghosh S, Giaime JA, Giardina KD, Giazotto A, Gill K, Glover L, Goetz E, Goetz R, Gomes S, González G, Gonzalez Castro JM, Gopakumar A, Gorodetsky ML, Gossan SE, Gosselin M, Gouaty R, Grado A, Graef C, Granata M, Grant A, Gras S, Gray C, Greco G, Green AC, Groot P, Grote H, Grunewald S, Gruning P, Guidi GM, Guo X, Gupta A, Gupta MK, Gushwa KE, Gustafson EK, Gustafson R, Hall BR, Hall ED, Hammond G, Haney M, Hanke MM, Hanks J, Hanna C, Hannuksela OA, Hanson J, Hardwick T, Harms J, Harry GM, Harry IW, Hart MJ, Haster CJ, Haughian K, Healy J, Heidmann A, Heintze MC, Heitmann H, Hello P, Hemming G, Hendry M, Heng IS, Hennig J, Henry J, Heptonstall AW, Heurs M, Hild S, Hoak D, Hofman D, Holt K, Holz DE, Hopkins P, Horst C, Hough J, Houston EA, Howell EJ, Hu YM, Huerta EA, Huet D, Hughey B, Husa S, Huttner SH, Huynh-Dinh T, Indik N, Ingram DR, Inta R, Intini G, Isa HN, Isac JM, Isi M, Iyer BR, Izumi K, Jacqmin T, Jani K, Jaranowski P, Jawahar S, Jiménez-Forteza F, Johnson WW, Jones DI, Jones R, Jonker RJG, Ju L, Junker J, Kalaghatgi CV, Kalogera V, Kandhasamy S, Kang G, Kanner JB, Karki S, Karvinen KS, Kasprzack M, Katolik M, Katsavounidis E, Katzman W, Kaufer S, Kawabe K, Kéfélian F, Keitel D, Kemball AJ, Kennedy R, Kent C, Key JS, Khalili FY, Khan I, Khan S, Khan Z, Khazanov EA, Kijbunchoo N, Kim C, Kim JC, Kim W, Kim WS, Kim YM, Kimbrell SJ, King EJ, King PJ, Kirchhoff R, Kissel JS, Kleybolte L, Klimenko S, Koch P, Koehlenbeck SM, Koley S, Kondrashov V, Kontos A, Korobko M, Korth WZ, Kowalska I, Kozak DB, Krämer C, Kringel V, Krishnan B, Królak A, Kuehn G, Kumar P, Kumar R, Kumar S, Kuo L, Kutynia A, Kwang S, Lackey BD, Lai KH, Landry M, Lang RN, Lange J, Lantz B, Lanza RK, Lartaux-Vollard A, Lasky PD, Laxen M, Lazzarini A, Lazzaro C, Leaci P, Leavey S, Lee CH, Lee HK, Lee HM, Lee HW, Lee K, Lehmann J, Lenon A, Leonardi M, Leroy N, Letendre N, Levin Y, Li TGF, Libson A, Littenberg TB, Liu J, Lo RKL, Lockerbie NA, London LT, Lord JE, Lorenzini M, Loriette V, Lormand M, Losurdo G, Lough JD, Lousto CO, Lovelace G, Lück H, Lumaca D, Lundgren AP, Lynch R, Ma Y, Macfoy S, Machenschalk B, MacInnis M, Macleod DM, Magaña Hernandez I, Magaña-Sandoval F, Magaña Zertuche L, Magee RM, Majorana E, Maksimovic I, Man N, Mandic V, Mangano V, Mansell GL, Manske M, Mantovani M, Marchesoni F, Marion F, Márka S, Márka Z, Markakis C, Markosyan AS, Maros E, Martelli F, Martellini L, Martin IW, Martynov DV, Mason K, Masserot A, Massinger TJ, Masso-Reid M, Mastrogiovanni S, Matas A, Matichard F, Matone L, Mavalvala N, Mazumder N, McCarthy R, McClelland DE, McCormick S, McCuller L, McGuire SC, McIntyre G, McIver J, McManus DJ, McRae T, McWilliams ST, Meacher D, Meadors GD, Meidam J, Mejuto-Villa E, Melatos A, Mendell G, Mercer RA, Merilh EL, Merzougui M, Meshkov S, Messenger C, Messick C, Metzdorff R, Meyers PM, Mezzani F, Miao H, Michel C, Middleton H, Mikhailov EE, Milano L, Miller AL, Miller A, Miller BB, Miller J, Millhouse M, Minazzoli O, Minenkov Y, Ming J, Mishra C, Mitra S, Mitrofanov VP, Mitselmakher G, Mittleman R, Moggi A, Mohan M, Mohapatra SRP, Montani M, Moore BC, Moore CJ, Moraru D, Moreno G, Morriss SR, Mours B, Mow-Lowry CM, Mueller G, Muir AW, Mukherjee A, Mukherjee D, Mukherjee S, Mukund N, Mullavey A, Munch J, Muniz EAM, Murray PG, Napier K, Nardecchia I, Naticchioni L, Nayak RK, Nelemans G, Nelson TJN, Neri M, Nery M, Neunzert A, Newport JM, Newton G, Ng KKY, Nguyen TT, Nichols D, Nielsen AB, Nissanke S, Nitz A, Noack A, Nocera F, Nolting D, Normandin MEN, Nuttall LK, Oberling J, Ochsner E, Oelker E, Ogin GH, Oh JJ, Oh SH, Ohme F, Oliver M, Oppermann P, Oram RJ, O'Reilly B, Ormiston R, Ortega LF, O'Shaughnessy R, Ottaway DJ, Overmier H, Owen BJ, Pace AE, Page J, Page MA, Pai A, Pai SA, Palamos JR, Palashov O, Palomba C, Pal-Singh A, Pan H, Pang B, Pang PTH, Pankow C, Pannarale F, Pant BC, Paoletti F, Paoli A, Papa MA, Paris HR, Parker W, Pascucci D, Pasqualetti A, Passaquieti R, Passuello D, Patricelli B, Pearlstone BL, Pedraza M, Pedurand R, Pekowsky L, Pele A, Penn S, Perez CJ, Perreca A, Perri LM, Pfeiffer HP, Phelps M, Piccinni OJ, Pichot M, Piergiovanni F, Pierro V, Pillant G, Pinard L, Pinto IM, Pitkin M, Poggiani R, Popolizio P, Porter EK, Post A, Powell J, Prasad J, Pratt JWW, Predoi V, Prestegard T, Prijatelj M, Principe M, Privitera S, Prix R, Prodi GA, Prokhorov LG, Puncken O, Punturo M, Puppo P, Pürrer M, Qi H, Qin J, Qiu S, Quetschke V, Quintero EA, Quitzow-James R, Raab FJ, Rabeling DS, Radkins H, Raffai P, Raja S, Rajan C, Rakhmanov M, Ramirez KE, Rapagnani P, Raymond V, Razzano M, Read J, Regimbau T, Rei L, Reid S, Reitze DH, Rew H, Reyes SD, Ricci F, Ricker PM, Rieger S, Riles K, Rizzo M, Robertson NA, Robie R, Robinet F, Rocchi A, Rolland L, Rollins JG, Roma VJ, Romano R, Romel CL, Romie JH, Rosińska D, Ross MP, Rowan S, Rüdiger A, Ruggi P, Ryan K, Sachdev S, Sadecki T, Sadeghian L, Sakellariadou M, Salconi L, Saleem M, Salemi F, Samajdar A, Sammut L, Sampson LM, Sanchez EJ, Sandberg V, Sandeen B, Sanders JR, Sassolas B, Sathyaprakash BS, Saulson PR, Sauter O, Savage RL, Sawadsky A, Schale P, Scheuer J, Schmidt E, Schmidt J, Schmidt P, Schnabel R, Schofield RMS, Schönbeck A, Schreiber E, Schuette D, Schulte BW, Schutz BF, Schwalbe SG, Scott J, Scott SM, Seidel E, Sellers D, Sengupta AS, Sentenac D, Sequino V, Sergeev A, Shaddock DA, Shaffer TJ, Shah AA, Shahriar MS, Shao L, Shapiro B, Shawhan P, Sheperd A, Shoemaker DH, Shoemaker DM, Siellez K, Siemens X, Sieniawska M, Sigg D, Silva AD, Singer A, Singer LP, Singh A, Singh R, Singhal A, Sintes AM, Slagmolen BJJ, Smith B, Smith JR, Smith RJE, Son EJ, Sonnenberg JA, Sorazu B, Sorrentino F, Souradeep T, Spencer AP, Srivastava AK, Staley A, Steinke M, Steinlechner J, Steinlechner S, Steinmeyer D, Stephens BC, Stone R, Strain KA, Stratta G, Strigin SE, Sturani R, Stuver AL, Summerscales TZ, Sun L, Sunil S, Sutton PJ, Swinkels BL, Szczepańczyk MJ, Tacca M, Talukder D, Tanner DB, Tápai M, Taracchini A, Taylor JA, Taylor R, Theeg T, Thomas EG, Thomas M, Thomas P, Thorne KA, Thorne KS, Thrane E, Tiwari S, Tiwari V, Tokmakov KV, Toland K, Tonelli M, Tornasi Z, Torrie CI, Töyrä D, Travasso F, Traylor G, Trifirò D, Trinastic J, Tringali MC, Trozzo L, Tsang KW, Tse M, Tso R, Tuyenbayev D, Ueno K, Ugolini D, Unnikrishnan CS, Urban AL, Usman SA, Vahlbruch H, Vajente G, Valdes G, Vallisneri M, van Bakel N, van Beuzekom M, van den Brand JFJ, Van Den Broeck C, Vander-Hyde DC, van der Schaaf L, van Heijningen JV, van Veggel AA, Vardaro M, Varma V, Vass S, Vasúth M, Vecchio A, Vedovato G, Veitch J, Veitch PJ, Venkateswara K, Venugopalan G, Verkindt D, Vetrano F, Viceré A, Viets AD, Vinciguerra S, Vine DJ, Vinet JY, Vitale S, Vo T, Vocca H, Vorvick C, Voss DV, Vousden WD, Vyatchanin SP, Wade AR, Wade LE, Wade M, Walet R, Walker M, Wallace L, Walsh S, Wang G, Wang H, Wang JZ, Wang M, Wang YF, Wang Y, Ward RL, Warner J, Was M, Watchi J, Weaver B, Wei LW, Weinert M, Weinstein AJ, Weiss R, Wen L, Wessel EK, Weßels P, Westphal T, Wette K, Whelan JT, Whiting BF, Whittle C, Williams D, Williams RD, Williamson AR, Willis JL, Willke B, Wimmer MH, Winkler W, Wipf CC, Wittel H, Woan G, Woehler J, Wofford J, Wong KWK, Worden J, Wright JL, Wu DS, Wu G, Yam W, Yamamoto H, Yancey CC, Yap MJ, Yu H, Yu H, Yvert M, Zadrożny A, Zanolin M, Zelenova T, Zendri JP, Zevin M, Zhang L, Zhang M, Zhang T, Zhang YH, Zhao C, Zhou M, Zhou Z, Zhu SJ, Zhu XJ, Zucker ME, Zweizig J, Buchner S, Cognard I, Corongiu A, Freire PCC, Guillemot L, Hobbs GB, Kerr M, Lyne AG, Possenti A, Ridolfi A, Shannon RM, Stappers BW, Weltevrede P. First Search for Nontensorial Gravitational Waves from Known Pulsars. PHYSICAL REVIEW LETTERS 2018; 120:031104. [PMID: 29400511 DOI: 10.1103/physrevlett.120.031104] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 11/16/2017] [Indexed: 06/07/2023]
Abstract
We present results from the first directed search for nontensorial gravitational waves. While general relativity allows for tensorial (plus and cross) modes only, a generic metric theory may, in principle, predict waves with up to six different polarizations. This analysis is sensitive to continuous signals of scalar, vector, or tensor polarizations, and does not rely on any specific theory of gravity. After searching data from the first observation run of the advanced LIGO detectors for signals at twice the rotational frequency of 200 known pulsars, we find no evidence of gravitational waves of any polarization. We report the first upper limits for scalar and vector strains, finding values comparable in magnitude to previously published limits for tensor strain. Our results may be translated into constraints on specific alternative theories of gravity.
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Abbott BP, Abbott R, Abbott TD, Abernathy MR, Acernese F, Ackley K, Adams C, Adams T, Addesso P, Adhikari RX, Adya VB, Affeldt C, Agathos M, Agatsuma K, Aggarwal N, Aguiar OD, Aiello L, Ain A, Ajith P, Akutsu T, Allen B, Allocca A, Altin PA, Ananyeva A, Anderson SB, Anderson WG, Ando M, Appert S, Arai K, Araya A, Araya MC, Areeda JS, Arnaud N, Arun KG, Asada H, Ascenzi S, Ashton G, Aso Y, Ast M, Aston SM, Astone P, Atsuta S, Aufmuth P, Aulbert C, Avila-Alvarez A, Awai K, Babak S, Bacon P, Bader MKM, Baiotti L, Baker PT, Baldaccini F, Ballardin G, Ballmer SW, Barayoga JC, Barclay SE, Barish BC, Barker D, Barone F, Barr B, Barsotti L, Barsuglia M, Barta D, Bartlett J, Barton MA, Bartos I, Bassiri R, Basti A, Batch JC, Baune C, Bavigadda V, Bazzan M, Bécsy B, Beer C, Bejger M, Belahcene I, Belgin M, Bell AS, Berger BK, Bergmann G, Berry CPL, Bersanetti D, Bertolini A, Betzwieser J, Bhagwat S, Bhandare R, Bilenko IA, Billingsley G, Billman CR, Birch J, Birney R, Birnholtz O, Biscans S, Bisht A, Bitossi M, Biwer C, Bizouard MA, Blackburn JK, Blackman J, Blair CD, Blair DG, Blair RM, Bloemen S, Bock O, Boer M, Bogaert G, Bohe A, Bondu F, Bonnand R, Boom BA, Bork R, Boschi V, Bose S, Bouffanais Y, Bozzi A, Bradaschia C, Brady PR, Braginsky VB, Branchesi M, Brau JE, Briant T, Brillet A, Brinkmann M, Brisson V, Brockill P, Broida JE, Brooks AF, Brown DA, Brown DD, Brown NM, Brunett S, Buchanan CC, Buikema A, Bulik T, Bulten HJ, Buonanno A, Buskulic D, Buy C, Byer RL, Cabero M, Cadonati L, Cagnoli G, Cahillane C, Calderón Bustillo J, Callister TA, Calloni E, Camp JB, Cannon KC, Cao H, Cao J, Capano CD, Capocasa E, Carbognani F, Caride S, Casanueva Diaz J, Casentini C, Caudill S, Cavaglià M, Cavalier F, Cavalieri R, Cella G, Cepeda CB, Cerboni Baiardi L, Cerretani G, Cesarini E, Chamberlin SJ, Chan M, Chao S, Charlton P, Chassande-Mottin E, Cheeseboro BD, Chen HY, Chen Y, Cheng HP, Chincarini A, Chiummo A, Chmiel T, Cho HS, Cho M, Chow JH, Christensen N, Chu Q, Chua AJK, Chua S, Chung S, Ciani G, Clara F, Clark JA, Cleva F, Cocchieri C, Coccia E, Cohadon PF, Colla A, Collette CG, Cominsky L, Constancio M, Conti L, Cooper SJ, Corbitt TR, Cornish N, Corsi A, Cortese S, Costa CA, Coughlin MW, Coughlin SB, Coulon JP, Countryman ST, Couvares P, Covas PB, Cowan EE, Coward DM, Cowart MJ, Coyne DC, Coyne R, Creighton JDE, Creighton TD, Cripe J, Crowder SG, Cullen TJ, Cumming A, Cunningham L, Cuoco E, Canton TD, Danilishin SL, D’Antonio S, Danzmann K, Dasgupta A, Da Silva Costa CF, Dattilo V, Dave I, Davier M, Davies GS, Davis D, Daw EJ, Day B, Day R, De S, DeBra D, Debreczeni G, Degallaix J, De Laurentis M, Deléglise S, Del Pozzo W, Denker T, Dent T, Dergachev V, De Rosa R, DeRosa RT, DeSalvo R, Devine RC, Dhurandhar S, Díaz MC, Fiore LD, Giovanni MD, Girolamo TD, Lieto AD, Pace SD, Palma ID, Virgilio AD, Doctor Z, Doi K, Dolique V, Donovan F, Dooley KL, Doravari S, Dorrington I, Douglas R, Dovale Álvarez M, Downes TP, Drago M, Drever RWP, Driggers JC, Du Z, Ducrot M, Dwyer SE, Eda K, Edo TB, Edwards MC, Effler A, Eggenstein HB, Ehrens P, Eichholz J, Eikenberry SS, Eisenstein RA, Essick RC, Etienne Z, Etzel T, Evans M, Evans TM, Everett R, Factourovich M, Fafone V, Fair H, Fairhurst S, Fan X, Farinon S, Farr B, Farr WM, Fauchon-Jones EJ, Favata M, Fays M, Fehrmann H, Fejer MM, Fernández Galiana A, Ferrante I, Ferreira EC, Ferrini F, Fidecaro F, Fiori I, Fiorucci D, Fisher RP, Flaminio R, Fletcher M, Fong H, Forsyth SS, Fournier JD, Frasca S, Frasconi F, Frei Z, Freise A, Frey R, Frey V, Fries EM, Fritschel P, Frolov VV, Fujii Y, Fujimoto MK, Fulda P, Fyffe M, Gabbard H, Gadre BU, Gaebel SM, Gair JR, Gammaitoni L, Gaonkar SG, Garufi F, Gaur G, Gayathri V, Gehrels N, Gemme G, Genin E, Gennai A, George J, Gergely L, Germain V, Ghonge S, Ghosh A, Ghosh A, Ghosh S, Giaime JA, Giardina KD, Giazotto A, Gill K, Glaefke A, Goetz E, Goetz R, Gondan L, González G, Gonzalez Castro JM, Gopakumar A, Gorodetsky ML, Gossan SE, Gosselin M, Gouaty R, Grado A, Graef C, Granata M, Grant A, Gras S, Gray C, Greco G, Green AC, Groot P, Grote H, Grunewald S, Guidi GM, Guo X, Gupta A, Gupta MK, Gushwa KE, Gustafson EK, Gustafson R, Hacker JJ, Hagiwara A, Hall BR, Hall ED, Hammond G, Haney M, Hanke MM, Hanks J, Hanna C, Hannam MD, Hanson J, Hardwick T, Harms J, Harry GM, Harry IW, Hart MJ, Hartman MT, Haster CJ, Haughian K, Hayama K, Healy J, Heidmann A, Heintze MC, Heitmann H, Hello P, Hemming G, Hendry M, Heng IS, Hennig J, Henry J, Heptonstall AW, Heurs M, Hild S, Hirose E, Hoak D, Hofman D, Holt K, Holz DE, Hopkins P, Hough J, Houston EA, Howell EJ, Hu YM, Huerta EA, Huet D, Hughey B, Husa S, Huttner SH, Huynh-Dinh T, Indik N, Ingram DR, Inta R, Ioka K, Isa HN, Isac JM, Isi M, Isogai T, Itoh Y, Iyer BR, Izumi K, Jacqmin T, Jani K, Jaranowski P, Jawahar S, Jiménez-Forteza F, Johnson WW, Jones DI, Jones R, Jonker RJG, Ju L, Junker J, Kagawa T, Kajita T, Kakizaki M, Kalaghatgi CV, Kalogera V, Kamiizumi M, Kanda N, Kandhasamy S, Kanemura S, Kaneyama M, Kang G, Kanner JB, Karki S, Karvinen KS, Kasprzack M, Kataoka Y, Katsavounidis E, Katzman W, Kaufer S, Kaur T, Kawabe K, Kawai N, Kawamura S, Kéfélian F, Keitel D, Kelley DB, Kennedy R, Key JS, Khalili FY, Khan I, Khan S, Khan Z, Khazanov EA, Kijbunchoo N, Kim C, Kim H, Kim JC, Kim J, Kim W, Kim YM, Kimbrell SJ, Kimura N, King EJ, King PJ, Kirchhoff R, Kissel JS, Klein B, Kleybolte L, Klimenko S, Koch P, Koehlenbeck SM, Kojima Y, Kokeyama K, Koley S, Komori K, Kondrashov V, Kontos A, Korobko M, Korth WZ, Kotake K, Kowalska I, Kozak DB, Krämer C, Kringel V, Krishnan B, Królak A, Kuehn G, Kumar P, Kumar R, Kumar R, Kuo L, Kuroda K, Kutynia A, Kuwahara Y, Lackey BD, Landry M, Lang RN, Lange J, Lantz B, Lanza RK, Lartaux-Vollard A, Lasky PD, Laxen M, Lazzarini A, Lazzaro C, Leaci P, Leavey S, Lebigot EO, Lee CH, Lee HK, Lee HM, Lee HW, Lee K, Lehmann J, Lenon A, Leonardi M, Leong JR, Leroy N, Letendre N, Levin Y, Li TGF, Libson A, Littenberg TB, Liu J, Lockerbie NA, Lombardi AL, London LT, Lord JE, Lorenzini M, Loriette V, Lormand M, Losurdo G, Lough JD, Lousto CO, Lovelace G, Lück H, Lundgren AP, Lynch R, Ma Y, Macfoy S, Machenschalk B, MacInnis M, Macleod DM, Magaña-Sandoval F, Majorana E, Maksimovic I, Malvezzi V, Man N, Mandic V, Mangano V, Mano S, Mansell GL, Manske M, Mantovani M, Marchesoni F, Marchio M, Marion F, Márka S, Márka Z, Markosyan AS, Maros E, Martelli F, Martellini L, Martin IW, Martynov DV, Mason K, Masserot A, Massinger TJ, Masso-Reid M, Mastrogiovanni S, Matichard F, Matone L, Matsumoto N, Matsushima F, Mavalvala N, Mazumder N, McCarthy R, McClelland DE, McCormick S, McGrath C, McGuire SC, McIntyre G, McIver J, McManus DJ, McRae T, McWilliams ST, Meacher D, Meadors GD, Meidam J, Melatos A, Mendell G, Mendoza-Gandara D, Mercer RA, Merilh EL, Merzougui M, Meshkov S, Messenger C, Messick C, Metzdorff R, Meyers PM, Mezzani F, Miao H, Michel C, Michimura Y, Middleton H, Mikhailov EE, Milano L, Miller AL, Miller A, Miller BB, Miller J, Millhouse M, Minenkov Y, Ming J, Mirshekari S, Mishra C, Mitrofanov VP, Mitselmakher G, Mittleman R, Miyakawa O, Miyamoto A, Miyamoto T, Miyoki S, Moggi A, Mohan M, Mohapatra SRP, Montani M, Moore BC, Moore CJ, Moraru D, Moreno G, Morii W, Morisaki S, Moriwaki Y, Morriss SR, Mours B, Mow-Lowry CM, Mueller G, Muir AW, Mukherjee A, Mukherjee D, Mukherjee S, Mukund N, Mullavey A, Munch J, Muniz EAM, Murray PG, Mytidis A, Nagano S, Nakamura K, Nakamura T, Nakano H, Nakano M, Nakano M, Nakao K, Napier K, Nardecchia I, Narikawa T, Naticchioni L, Nelemans G, Nelson TJN, Neri M, Nery M, Neunzert A, Newport JM, Newton G, Nguyen TT, Ni WT, Nielsen AB, Nissanke S, Nitz A, Noack A, Nocera F, Nolting D, Normandin MEN, Nuttall LK, Oberling J, Ochsner E, Oelker E, Ogin GH, Oh JJ, Oh SH, Ohashi M, Ohishi N, Ohkawa M, Ohme F, Okutomi K, Oliver M, Ono K, Ono Y, Oohara K, Oppermann P, Oram RJ, O’Reilly B, O’Shaughnessy R, Ottaway DJ, Overmier H, Owen BJ, Pace AE, Page J, Pai A, Pai SA, Palamos JR, Palashov O, Palomba C, Pal-Singh A, Pan H, Pankow C, Pannarale F, Pant BC, Paoletti F, Paoli A, Papa MA, Paris HR, Parker W, Pascucci D, Pasqualetti A, Passaquieti R, Passuello D, Patricelli B, Pearlstone BL, Pedraza M, Pedurand R, Pekowsky L, Pele A, Peña Arellano FE, Penn S, Perez CJ, Perreca A, Perri LM, Pfeiffer HP, Phelps M, Piccinni OJ, Pichot M, Piergiovanni F, Pierro V, Pillant G, Pinard L, Pinto IM, Pitkin M, Poe M, Poggiani R, Popolizio P, Post A, Powell J, Prasad J, Pratt JWW, Predoi V, Prestegard T, Prijatelj M, Principe M, Privitera S, Prodi GA, Prokhorov LG, Puncken O, Punturo M, Puppo P, Pürrer M, Qi H, Qin J, Qiu S, Quetschke V, Quintero EA, Quitzow-James R, Raab FJ, Rabeling DS, Radkins H, Raffai P, Raja S, Rajan C, Rakhmanov M, Rapagnani P, Raymond V, Razzano M, Re V, Read J, Regimbau T, Rei L, Reid S, Reitze DH, Rew H, Reyes SD, Rhoades E, Ricci F, Riles K, Rizzo M, Robertson NA, Robie R, Robinet F, Rocchi A, Rolland L, Rollins JG, Roma VJ, Romano R, Romie JH, Rosińska D, Rowan S, Rüdiger A, Ruggi P, Ryan K, Sachdev S, Sadecki T, Sadeghian L, Sago N, Saijo M, Saito Y, Sakai K, Sakellariadou M, Salconi L, Saleem M, Salemi F, Samajdar A, Sammut L, Sampson LM, Sanchez EJ, Sandberg V, Sanders JR, Sasaki Y, Sassolas B, Sathyaprakash BS, Sato S, Sato T, Saulson PR, Sauter O, Savage RL, Sawadsky A, Schale P, Scheuer J, Schmidt E, Schmidt J, Schmidt P, Schnabel R, Schofield RMS, Schönbeck A, Schreiber E, Schuette D, Schutz BF, Schwalbe SG, Scott J, Scott SM, Sekiguchi T, Sekiguchi Y, Sellers D, Sengupta AS, Sentenac D, Sequino V, Sergeev A, Setyawati Y, Shaddock DA, Shaffer TJ, Shahriar MS, Shapiro B, Shawhan P, Sheperd A, Shibata M, Shikano Y, Shimoda T, Shoda A, Shoemaker DH, Shoemaker DM, Siellez K, Siemens X, Sieniawska M, Sigg D, Silva AD, Singer A, Singer LP, Singh A, Singh R, Singhal A, Sintes AM, Slagmolen BJJ, Smith B, Smith JR, Smith RJE, Somiya K, Son EJ, Sorazu B, Sorrentino F, Souradeep T, Spencer AP, Srivastava AK, Staley A, Steinke M, Steinlechner J, Steinlechner S, Steinmeyer D, Stephens BC, Stevenson SP, Stone R, Strain KA, Straniero N, Stratta G, Strigin SE, Sturani R, Stuver AL, Sugimoto Y, Summerscales TZ, Sun L, Sunil S, Sutton PJ, Suzuki T, Swinkels BL, Szczepańczyk MJ, Tacca M, Tagoshi H, Takada S, Takahashi H, Takahashi R, Takamori A, Talukder D, Tanaka H, Tanaka K, Tanaka T, Tanner DB, Tápai M, Taracchini A, Tatsumi D, Taylor R, Telada S, Theeg T, Thomas EG, Thomas M, Thomas P, Thorne KA, Thrane E, Tippens T, Tiwari S, Tiwari V, Tokmakov KV, Toland K, Tomaru T, Tomlinson C, Tonelli M, Tornasi Z, Torrie CI, Töyrä D, Travasso F, Traylor G, Trifirò D, Trinastic J, Tringali MC, Trozzo L, Tse M, Tso R, Tsubono K, Tsuzuki T, Turconi M, Tuyenbayev D, Uchiyama T, Uehara T, Ueki S, Ueno K, Ugolini D, Unnikrishnan CS, Urban AL, Ushiba T, Usman SA, Vahlbruch H, Vajente G, Valdes G, van Bakel N, van Beuzekom M, van den Brand JFJ, Van Den Broeck C, Vander-Hyde DC, van der Schaaf L, van Heijningen JV, van Putten MHPM, van Veggel AA, Vardaro M, Varma V, Vass S, Vasúth M, Vecchio A, Vedovato G, Veitch J, Veitch PJ, Venkateswara K, Venugopalan G, Verkindt D, Vetrano F, Viceré A, Viets AD, Vinciguerra S, Vine DJ, Vinet JY, Vitale S, Vo T, Vocca H, Vorvick C, Voss DV, Vousden WD, Vyatchanin SP, Wade AR, Wade LE, Wade M, Wakamatsu T, Walker M, Wallace L, Walsh S, Wang G, Wang H, Wang M, Wang Y, Ward RL, Warner J, Was M, Watchi J, Weaver B, Wei LW, Weinert M, Weinstein AJ, Weiss R, Wen L, Weßels P, Westphal T, Wette K, Whelan JT, Whiting BF, Whittle C, Williams D, Williams RD, Williamson AR, Willis JL, Willke B, Wimmer MH, Winkler W, Wipf CC, Wittel H, Woan G, Woehler J, Worden J, Wright JL, Wu DS, Wu G, Yam W, Yamamoto H, Yamamoto K, Yamamoto T, Yancey CC, Yano K, Yap MJ, Yokoyama J, Yokozawa T, Yoon TH, Yu H, Yu H, Yuzurihara H, Yvert M, Zadrożny A, Zangrando L, Zanolin M, Zeidler S, Zendri JP, Zevin M, Zhang L, Zhang M, Zhang T, Zhang Y, Zhao C, Zhou M, Zhou Z, Zhu SJ, Zhu XJ, Zucker ME, Zweizig J. Prospects for observing and localizing gravitational-wave transients with Advanced LIGO, Advanced Virgo and KAGRA. LIVING REVIEWS IN RELATIVITY 2018; 21:3. [PMID: 29725242 PMCID: PMC5920066 DOI: 10.1007/s41114-018-0012-9] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 02/07/2018] [Indexed: 05/21/2023]
Abstract
We present possible observing scenarios for the Advanced LIGO, Advanced Virgo and KAGRA gravitational-wave detectors over the next decade, with the intention of providing information to the astronomy community to facilitate planning for multi-messenger astronomy with gravitational waves. We estimate the sensitivity of the network to transient gravitational-wave signals, and study the capability of the network to determine the sky location of the source. We report our findings for gravitational-wave transients, with particular focus on gravitational-wave signals from the inspiral of binary neutron star systems, which are the most promising targets for multi-messenger astronomy. The ability to localize the sources of the detected signals depends on the geographical distribution of the detectors and their relative sensitivity, and [Formula: see text] credible regions can be as large as thousands of square degrees when only two sensitive detectors are operational. Determining the sky position of a significant fraction of detected signals to areas of 5-[Formula: see text] requires at least three detectors of sensitivity within a factor of [Formula: see text] of each other and with a broad frequency bandwidth. When all detectors, including KAGRA and the third LIGO detector in India, reach design sensitivity, a significant fraction of gravitational-wave signals will be localized to a few square degrees by gravitational-wave observations alone.
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Brito JA, Subbotin SA, Desaeger J, Achinelly F, Qiu S. First Report of the Root-Knot Nematode ( Meloidogyne javanica) Infecting Hops ( Humulus lupulus) in Florida, USA. J Nematol 2018; 50:543-544. [PMID: 31094156 DOI: 10.21307/jofnem-2018-040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Ramage L, Yen C, Qiu S, Simillis C, Kontovounisios C, Tan E, Tekkis P. Does a missed obstetric anal sphincter injury at time of delivery affect short-term functional outcome? Ann R Coll Surg Engl 2018; 100:26-32. [PMID: 29022787 PMCID: PMC5838671 DOI: 10.1308/rcsann.2017.0140] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/05/2017] [Indexed: 12/15/2022] Open
Abstract
Introduction This study aimed to ascertain whether missed obstetric anal sphincter injury at delivery had worse functional and quality of life outcomes than primary repair immediately following delivery. Materials and methods Two to one propensity matching was undertaken of patients presenting to a tertiary pelvic floor unit with ultrasound evidence of missed obstetric anal sphincter injury within 24 months of delivery with patients who underwent primary repair at the time of delivery by parity, grade of injury and time to assessment. Outcomes compared included Birmingham Bowel, Bladder and Urinary Symptom Questionnaire (BBUSQ), Wexner Incontinence Score, Short Form-36, Pelvic Organ Prolapse/Urinary Incontinence Sexual Questionnaire and anorectal physiology results. Results Thirty-two missed anal sphincter injuries were matched two to one with sixty-two patients who underwent primary repair of an anal sphincter defect. Mean time to follow-up was 9.31 ± 6.79 months. Patients with a missed anal sphincter injury had suffered more incontinence, as seen in higher the Birmingham Bowel, Bladder and Urinary Symptom Questionnaire (BBUSQ; 30.56% ± 14.41% vs. 19.75% ± 15.65%, P = 0.002) and Wexner scores (6.00 ± 3.76 vs. 3.67 ± 4.06, P = 0.009). They also had a worse BBUSQ urinary domain score (28.25% ± 14.9% vs. 17.01 ± 13.87%, P = 0.001) and worse physical functioning as measured by the Short Form-36 questionnaire (P = 0.045). There were no differences in other outcomes compared, including anorectal physiology and sexual function. Discussion In the short-term, patients with a missed obstetric anal sphincter injury had significantly worse faecal incontinence and urinary function scores, however quality of life and sexual function were largely comparable between groups. Conclusions Longer-term follow-up is needed to assess the effects of missed obstetric anal sphincter injury over time.
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Yao Z, Yan LW, Wang T, Qiu S, Lin T, He FL, Yuan RH, Liu XL, Qi J, Zhu QT. A rapid micro-magnetic resonance imaging scanning for three-dimensional reconstruction of peripheral nerve fascicles. Neural Regen Res 2018; 13:1953-1960. [PMID: 30233069 PMCID: PMC6183031 DOI: 10.4103/1673-5374.238718] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The most common methods for three-dimensional reconstruction of peripheral nerve fascicles include histological and radiology techniques. Histological techniques have many drawbacks including an enormous manual workload and poor image registration. Micro-magnetic resonance imaging (Micro-MRI), an emerging radiology technique, has been used to report results in the brain, liver and tumor tissues. However, micro-MRI usage for obtaining intraneural structures has not been reported. The aim of this study was to present a new imaging method for three-dimensional reconstruction of peripheral nerve fascicles by 1T micro-MRI. Freshly harvested sciatic nerve samples from an amputated limb were divided into four groups. Two different scanning conditions (Mannerist Solution/GD-DTPA contrast agent, distilled water) were selected, and both T1 and T2 phases programmed for each scanning condition. Three clinical surgeons evaluated the quality of the images via a standardized scale. Moreover, to analyze deformation of the two-dimensional image, the nerve diameter and total area of the micro-MRI images were compared after hematoxylin-eosin staining. The results show that rapid micro-MRI imaging method can be used for three-dimensional reconstruction of the fascicle structure. Nerve sample immersed in contrast agent (Mannerist Solution/GD-DTPA) and scanned in the T1 phase was the best. Moreover, the nerve sample was scanned freshly and can be recycled for other procedures. MRI images show better stability and smaller deformation compared with histological images. In conclusion, micro-MRI provides a feasible and rapid method for three-dimensional reconstruction of peripheral nerve fascicles, which can clearly show the internal structure of the peripheral nerve.
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Zhang J, Li D, Shi X, Zhang D, Qiu S, Wei J, Zhang J, Zhou J, Zhu K, Xia Y. Mining and expression analysis of candidate genes involved in regulating the chilling requirement fulfillment of Paeonia lactiflora 'Hang Baishao'. BMC PLANT BIOLOGY 2017; 17:262. [PMID: 29273002 PMCID: PMC5741883 DOI: 10.1186/s12870-017-1205-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 12/06/2017] [Indexed: 05/06/2023]
Abstract
BACKGROUND The artificial enlargement of the planting area and ecological amplitude of ornamentals for horticultural and landscape applications are significant. Herbaceous peony (Paeonia lactiflora Pall.) is a world-famous ornamental with attractive and fragrant flowers and is mainly planted in temperate and cool areas. Comparatively higher winter temperatures in the subtropical and tropical Northern Hemisphere result in a deficit of chilling accumulation for bud dormancy release, which severely hinders "The southward plantation of herbaceous peony". Studies on the dormancy, chilling requirement (CR) and relevant molecular mechanisms of peony are needed to enhance our ability to extend the range of this valuable horticultural species. RESULTS Based on natural and artificial chilling experiments, and chilling hour (CH) and chilling unit (CU) evaluation systems, the lowest CR of 'Hang Baishao' was between 504.00 and 672.00 CHs and the optimal CR was 672.00 CHs and 856.08 CUs for achieving strong sprouting, growth and flowering performance. Transcriptome sequencing and gene identification by RNA-Seq were performed on 'Hang Baishao' buds during the dormancy and sprouting periods. Six gene libraries were constructed, and 66 temperature- and photoperiod-associated unigenes were identified as the potential candidate genes that may regulate or possibly determine CR characteristics. The difference in the expression patterns of SUPPRESSPOR OF OVEREXPRESSION OF CONSTANS1 (SOC1) between the winters of 2012-2013 and 2015-2016, and the difference of CR fulfillment periods also between these two winters represented the interesting congruent relationships. This correlation was also observed for WRKY DNA-BINDING PROTEIN 33 (WRKY 33). CONCLUSIONS Combined with the results acquired from all of experiments, 'Hang Baishao' was confirmed to be a superb peony resource that have significantly low CR characteristics. The two genes of SOC1 and WRKY33 are likely involved in determining the CR amount and fulfillment period of 'Hang Baishao'. HEAT SHOCK PROTEIN, OSMOTIN and TIMING OF CAB EXPRESSION 1 also deserve attention for the CR research. This study could contribute to the knowledge of the deep factors and mechanisms that regulate CR characteristics, and may be beneficial for breeding new germplasms that have low CRs for landscape or horticulture applications in subtropical regions.
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Kong E, Nikolaou S, Qiu S, Pellino G, Tekkis P, Kontovounisios C. A systematic review of sacral nerve stimulation for faecal incontinence following ileal pouch anal anastomosis. Updates Surg 2017; 70:1-5. [PMID: 29086238 PMCID: PMC5866279 DOI: 10.1007/s13304-017-0496-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 10/04/2017] [Indexed: 12/20/2022]
Abstract
Faecal incontinence is a common complication of ileal pouch anal anastomosis (IPAA) and seems to worsen with time. The aim of this paper is to review the evidence of the use of sacral nerve stimulation (SNS) for patients with faecal incontinence after IPAA. A literature search was performed on PubMed and Cochrane databases for all relevant articles. All studies, which reported the outcome of SNS in patients with faecal incontinence after IPAA, were reviewed. Three papers were identified, including a case report, cohort study and retrospective study. The total number of patients was 12. The follow-up duration included 3 months, 6 months and 24 months. After peripheral nerve evaluation, definitive implantation was performed in 10 (83.3%) patients. All three studies reported positive outcomes, with CCF scores and incontinence episodes improving significantly. Preliminary results suggest good outcome after permanent SNS implant. Studies with larger sample sizes, well-defined patient characteristics and standardized outcome measures are required to fully investigate the effect of SNS in IPAA patients.
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