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Fan CH, Peng B, Zhang FC. Influence of laryngeal mask airway (LMA) insertion anesthesia on cognitive function after microsurgery in pediatric neurosurgery. Eur Rev Med Pharmacol Sci 2017; 21:37-42. [PMID: 29165767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To compare the influence of laryngeal mask airway (LMA) insertion anesthesia and endotracheal intubation on cognitive function during anesthesia for neurosurgery microscopy. PATIENTS AND METHODS A total of 76 pediatric patients who underwent neurosurgery microscopy were selected. They were randomly divided in the LMA insertion group with 35 cases and the endotracheal intubation group with 41 cases. Before the operation, the two groups were injected with 0.02 mg/kg atropine and 2 mg/kg phenobarbital. A combination solution of 2 mg/kg ketamine and 0.1 mg/kg midazolam was then given to induce anesthesia. The inhalation of 4-6% sevoflurane was used to maintain anesthesia. The hemodynamics, complications, cognitive functions, and expression levels of serum NSE and S-100β protein after anesthesia and extubation were compared. RESULTS After comparing the average heart rate, average arterial pressure and average oxygen saturation of the LMA insertion group at different times, the difference was not statistically significant (p>0.05). At T2 and T4, compared with the endotracheal intubation group, the average heart rate and arterial pressure of the LMA insertion group were significantly reduced and the average oxygen saturation was significantly increased. The difference was statistically significant (p<0.05). The prevalence of complications from postoperative cognitive dysfunction (POCD) of the LMA insertion group was significantly lower than that of the endotracheal incubation group. The difference was statistically significant (p<0.05). CONCLUSIONS Compared with the endotracheal intubation group, in the LMA insertion group, the hemodynamics is more stable, the prevalence of postoperative complications and the POCD are lower during pediatric neurosurgery microscopy. The occurrence of POCD is related to the reduction of protein expression levels of NSE and S-100β during serum anesthesia and the recovery period.
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Affiliation(s)
- C-H Fan
- Department of Neonatology, Xuzhou Chlidren's Hospital, Xuzhou, Jiangsu, P.R. China.
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52
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Liu HS, Ren HT, Zhou LX, Li SQ, Peng B, Cui LY, Guan HZ. [Clinical analysis of paraneoplastic neurological syndrome associated with thymoma]. Zhonghua Yi Xue Za Zhi 2017; 97:2770-2774. [PMID: 28954337 DOI: 10.3760/cma.j.issn.0376-2491.2017.35.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objectives: To investigate the clinical features, diagnosis and treatment of antibody mediated paraneoplastic neurological syndrome associated with thymoma. Methods: From 2012 to 2017, the paraneoplastic antibody and neuron antibody were tested from both blood and cerebrospinal fluid (CSF) in consecutive patients clinically suspected with neurological paraneoplastic syndromes/unknown encephalitis in Peking Union Medical College Hospital.The clinical data, lab results, electrophysiological examinations, imaging features, treatment and clinical prognosis were collected.In this study, the patients who met the diagnostic criteria of both thymoma and neurological paraneoplastic syndrome were retrospectively analyzed.The functional severity was assessed by modified Rankin score(mRS). Results: Six patients (4 female and 2 male) were included for the analysis.Of them, 4 patients presented with limbic encephalitis, 1 with peripheral neuropathy accompanying with myasthenia gravis and 1 with spinal and cerebella degeneration.Three patients were in severe condition (mRS=5). Positive α-amino-3-hydroxy-5-methyl-4-iso xazolepropionic acid receptor, antibody (AMPAR) was identified in 3 patients(2 in blood and CSF, 1 in blood), CV2 plus acetylcholine receptor antibody (ACH-Ab) positive in blood was seen in 1 patient and positive N-methyl-D-aspartate receptor (NMDAR) in blood and CSF in 1 patient. Brain MRI showed abnormalities in 2 patients.The CT scan revealed thymoma in all 6 patients.All patients received intravenous immunogloblin (IVIG) and/or glucocorticoid immediately after diagnosis.Furthermore, thymectomy was performed in 5 patients. All the patients were remarkably improved with mRS 0-1 at discharge.Five patients were clinical stable within follow-up of 1-2.5 years.However, one patient who refused thymectomy experienced several clinical recurrencs. Conclusions: Antibodies mediated paraneoplastic neurological syndrome/autoimmune encephalitis can occur in patients with thymoma with typical characteristics. The correlated antibody test and chest CT might be important in patients clinically suspected with neurological paraneoplastic syndrome or encephalitis with unknown reason. Surgical thymectomy combining with active immunological treatment may play a role in the favorable prognosis, even in those clinical severe patients.
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Affiliation(s)
- H S Liu
- Department of Thoracic, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China
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Peng B, Abdellatif L, Klausen C, Leung P, Bedaiwy M. The role of GNRH antagonists in a novel primary ectopic pregnancy cell model. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.317] [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: 11/29/2022]
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54
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Iews M, Hashem A, AbdelHafez F, Abdelkareem A, Peng B, Bedaiwy M. Oxygen tension influences mouse embryo development when varies in concentration. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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55
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Marshall FJ, Bahr RE, Goncharov VN, Glebov VY, Peng B, Regan SP, Sangster TC, Stoeckl C. A framed, 16-image Kirkpatrick-Baez x-ray microscope. Rev Sci Instrum 2017; 88:093702. [PMID: 28964245 DOI: 10.1063/1.5000737] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 08/17/2017] [Indexed: 06/07/2023]
Abstract
A 16-image Kirkpatrick-Baez (KB)-type x-ray microscope consisting of compact KB mirrors [F. J. Marshall, Rev. Sci. Instrum. 83, 10E518 (2012)] has been assembled for the first time with mirrors aligned to allow it to be coupled to a high-speed framing camera. The high-speed framing camera has four independently gated strips whose emission sampling interval is ∼30 ps. Images are arranged four to a strip with ∼60-ps temporal spacing between frames on a strip. By spacing the timing of the strips, a frame spacing of ∼15 ps is achieved. A framed resolution of ∼6-μm is achieved with this combination in a 400-μm region of laser-plasma x-ray emission in the 2- to 8-keV energy range. A principal use of the microscope is to measure the evolution of the implosion stagnation region of cryogenic DT target implosions on the University of Rochester's OMEGA Laser System [T. R. Boehly et al., Opt. Commun. 133, 495 (1997)]. The unprecedented time and spatial resolutions achieved with this framed, multi-image KB microscope have made it possible to accurately determine the cryogenic implosion core emission size and shape at the peak of stagnation. These core size measurements, taken in combination with those of ion temperature, neutron-production temporal width, and neutron yield allow for inference of core pressures, currently exceeding 50 Gbar in OMEGA cryogenic target implosions [Regan et al., Phys. Rev. Lett. 117, 025001 (2016)].
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Affiliation(s)
- F J Marshall
- Laboratory for Laser Energetics, University of Rochester, 250 E. River Rd., Rochester, New York 14623, USA
| | - R E Bahr
- Laboratory for Laser Energetics, University of Rochester, 250 E. River Rd., Rochester, New York 14623, USA
| | - V N Goncharov
- Laboratory for Laser Energetics, University of Rochester, 250 E. River Rd., Rochester, New York 14623, USA
| | - V Yu Glebov
- Laboratory for Laser Energetics, University of Rochester, 250 E. River Rd., Rochester, New York 14623, USA
| | - B Peng
- Laboratory for Laser Energetics, University of Rochester, 250 E. River Rd., Rochester, New York 14623, USA
| | - S P Regan
- Laboratory for Laser Energetics, University of Rochester, 250 E. River Rd., Rochester, New York 14623, USA
| | - T C Sangster
- Laboratory for Laser Energetics, University of Rochester, 250 E. River Rd., Rochester, New York 14623, USA
| | - C Stoeckl
- Laboratory for Laser Energetics, University of Rochester, 250 E. River Rd., Rochester, New York 14623, USA
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Huang TR, Li W, Peng B. Correlation of inflammatory mediators in prostatic secretion with chronic prostatitis and chronic pelvic pain syndrome. Andrologia 2017; 50. [PMID: 28762547 DOI: 10.1111/and.12860] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/25/2017] [Indexed: 01/15/2023] Open
Abstract
Chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) is a common clinical syndrome, and the mechanisms underlying the relationship between CP/CPPS and ED are still unclear. This study aimed to investigate the differential expression of 40 inflammatory mediators in patients with CP/CPPS and to demonstrate whether these mediators related to the severity of erectile function. Eighty cases of patients with CP/CPPS were selected, including 40 cases of IIIA and 40 cases of IIIB, with 20 cases of healthy men as controls. After collecting their expressed prostatic secretion, cytokines levels in EPS were determined by ELISA using ELISA kits. The IIEF-5 questionnaire was used to evaluate erectile function. IIEF-5 scores were significantly lower in the IIIA and IIIB groups than those in the control group. The expression of IL-8, IL-1β and ICAM-1 was markedly higher in the IIIA and IIIB groups than in the control group. The expression of IL-8, IL-1β and ICAM-1 in the IIIA group was higher than that in the IIIB group. The expression of IL-8, IL-1β and ICAM-1 was negatively correlated with IIEF-5 scores in both IIIA and IIIB patients. In conclusion, IL-8, IL-1β and ICAM-1 are possible indicators for the clinical diagnosis of CP/CPPS and evaluation of erectile function on patients with CP/CPPS.
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Affiliation(s)
- T R Huang
- Department of Urology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - W Li
- Department of Urology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - B Peng
- Department of Urology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
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Yao Y, Peng B, Wang XH, Fang F, Xu D, Xu XL, Ren HT, Zhu YC, Cui LY, Guan HZ. [Analysis of prodromal phase and prodromal events in anti-N-methyl-D-aspartate receptor encephalitis]. Zhonghua Yi Xue Za Zhi 2017; 97:1469-1473. [PMID: 28535637 DOI: 10.3760/cma.j.issn.0376-2491.2017.19.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
Objective: To analyze prodromal phase and prodromal events of anti-N-methyl-D-aspartate receptor (NMDAR) encephalitis. Methods: Clinical data of 179 patients hospitalized and diagnosed during 2010-2016 including adults and children in Peking Union Medical College Hospital and Beijing Children's Hospital were collected.Patients with prodromal phase or prodromal events were selected.A retrospective analysis of clinical characteristics including prodromal phase or prodromal events, course of disease, brain imaging, laboratory results and therapeutic effect was performed. Results: Prodromal phase was presented in 31.8% (57/179) of patients.Most common symptoms included fever (73.7%) and headache (68.4%). Prodromal phase was prolonged in 6 patients, the longest being 64 days.Among those 6 patients (10.5%), headache and fever were the only symptoms throughout disease courses in 3 cases.Prodromal events were reported in 6.1% (11/179) of patients, including 5 patients after HSV1 encephalitis, 1 after Japanese encephalitis, and 2 after resection of melanocytic nevi. Conclusions: Anti-NMDAR encephalitis can be preceded with prolonged prodromal phase.In some patients prodromal symptoms are the only clinical presentation.Clinical features of those atypical cases suggest that infection may be the precipitating factor.Viral encephalitis including HSV1 encephalitis and Japanese encephalitis may be prodromal events in some cases.
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Affiliation(s)
- Y Yao
- Department of Neurology, Peking Union Medical College Hospital, Beijing 100730, China
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58
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Palantavida S, Peng B, Sokolov I. Ultrabright fluorescent silica particles with a large number of complex spectra excited with a single wavelength for multiplex applications. Nanoscale 2017; 9:4881-4890. [PMID: 28177010 DOI: 10.1039/c6nr08976c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We report on a novel approach to synthesize ultrabright fluorescent silica particles capable of producing a large number of complex spectra. The spectra can be excited using a single wavelength which is paramount in quantitative fluorescence imaging, flow cytometry and sensing applications. The approach employs the physical encapsulation of organic fluorescent molecules inside a nanoporous silica matrix with no dye leakage. As was recently demonstrated, such an encapsulation allowed for the encapsulation of very high concentrations of organic dyes without quenching their fluorescent efficiency. As a result, dye molecules are distanced within ∼5 nm from each other; it theoretically allows for efficient exchange of excitation energy via Förster resonance energy transfer (FRET). Here we present the first experimental demonstration of the encapsulation of fluorescent dyes in the FRET sequence. Attaining a FRET sequence of up to five different dyes is presented. The number of distinguishable spectra can be further increased by using different relative concentrations of encapsulated dyes. Combining these approaches allows for creating a large number of ultrabright fluorescent particles with substantially different fluorescence spectra. We also demonstrate the utilization of these particles for potential multiplexing applications. Though fluorescence spectra of the obtained multiplex probes are typically overlapping, they can be distinguished by using standard linear decomposition algorithms.
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Affiliation(s)
- S Palantavida
- Department of Mechanical Engineering, Tufts University, 200 College Ave., Medford, MA 02155, USA.
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59
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Cui JJ, Peng B, Lin W. Effects of combining CBCT technology with visual root canal recurrence in treatment of elderly patients with dental pulp disease. Eur Rev Med Pharmacol Sci 2017; 21:903-907. [PMID: 28338208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE The aim of this study is to analyze the effects of combining cone beam computed tomography (CBCT) technology with visual root canal recurrence in the treatment of elderly patients with dental pulp disease. PATIENTS AND METHODS 56 cases of elderly patients with dental pulp disease were contiguously selected, and randomly divided into the control group (70 teeth from 27 patients) and the observation group (77 teeth from the rest 29 patients). We adopted CBCT technology combined with conventional root canal therapy in control group and CBCT technology combined with visual root canal recurrence in observation group to compare the clinical effects. RESULTS It was found that there was no statistical difference in duration of operation between the two groups (p>0.05). The operation times and the VAS during and after operation of the observation group were significantly less than that of the control group (p<0.05). The duration of follow-up of the two groups was both about 18 months. Successful rates of treatment for 6 months and by the end of follow-up visit in the observation group were both significantly higher than those in the control group (p<0.05). The correct filling rate, good filling rate and fair filling rate in the observation group were significantly higher than those of the control group (p<0.05). CONCLUSIONS CBCT technology combined with visual root canal recurrence can significantly improve the near and long-term treatment effects of elderly patients with dental pulp disease.
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Affiliation(s)
- J-J Cui
- Department of Endodontics, Hospital of Stomatology, Wuhan University, Hongshan District, Wuhan, Hubei, China.
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Geng J, Fan J, Wang Q, Zhang XP, Kang L, Li QY, Xu YF, Peng B, Zheng JH, Yao XD. Decreased REG1α expression suppresses growth, invasion and angiogenesis of bladder cancer. Eur J Surg Oncol 2017; 43:837-846. [PMID: 28209239 DOI: 10.1016/j.ejso.2017.01.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 12/19/2016] [Accepted: 01/17/2017] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Previous study has indicated association between REG1α and bladder cancer. The aim of this study was to investigate the role of Regenerating gene I alpha (REG1α) in bladder cancer. METHODS The role of REG1α in bladder cancer cell proliferation, migration and VEGF-induced angiogenesis was explored in vitro and in vivo. Immunohistochemistry (IHC) analysis was assessed to determine the expression of REG1α in ten paired bladder cancer and adjacent non-cancerous tissues, and in 296 bladder cancer samples. RESULTS Down-regulation of REG1α expression significantly reduced the proliferation, migration, invasion and VEGF-induced angiogenesis in vitro and the growth of xenograft tumors in vivo. VEGF expression in bladder cancer is associated with REG1α expression and recurrence. REG1α was overexpressed in bladder cancer tissues compared with adjacent normal samples. Patients with elevated REG1α exhibited shorter recurrence times and poor survival. CONCLUSION Downregulation of REG1α expression can reduce tumor growth, migration, invasion and angiogenesis. Our study demonstrates that REG1α can be used as a marker of recurrence and prognosis in bladder cancer. Therefore, REG1α targeting in bladder cancer patients represents a promising therapeutic strategy.
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Affiliation(s)
- J Geng
- Department of Urology, Tenth People's Hospital, Tongji University, Shanghai, 200072, China.
| | - J Fan
- Department of Pathology, Huashan Hospital, Fudan University, Shanghai, 200040, China; Department of Pathology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Q Wang
- Department of Urology, Tenth People's Hospital, Tongji University, Shanghai, 200072, China
| | - X-P Zhang
- Department of Urology, Tenth People's Hospital, Tongji University, Shanghai, 200072, China
| | - L Kang
- Department of Urology, Tenth People's Hospital, Tongji University, Shanghai, 200072, China
| | - Q-Y Li
- Department of Pathology, Tenth People's Hospital, Tongji University, Shanghai, 200072, China
| | - Y-F Xu
- Department of Urology, Tenth People's Hospital, Tongji University, Shanghai, 200072, China
| | - B Peng
- Department of Urology, Tenth People's Hospital, Tongji University, Shanghai, 200072, China
| | - J-H Zheng
- Department of Urology, Tenth People's Hospital, Tongji University, Shanghai, 200072, China
| | - X-D Yao
- Department of Urology, Tenth People's Hospital, Tongji University, Shanghai, 200072, China.
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Jiang H, Bian Z, Tai BJ, Du MQ, Peng B. The Effect of a Bi-annual Professional Application of APF Foam on Dental Caries Increment in Primary Teeth: 24-month Clinical Trial. J Dent Res 2016; 84:265-8. [PMID: 15723868 DOI: 10.1177/154405910508400311] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The purpose of this study was to evaluate the effect of a bi-annual professional application of acidulated phosphate fluoride (APF) foam on caries increment in the primary dentition over a two-year period in the People’s Republic of China. In a double-blind, cluster-randomized, placebo-controlled trial, 392 children aged 3–4 years from 15 classes were randomly assigned to two groups on a school class basis. The experimental group (8 classes) received a bi-annual APF foam application, and the control group (7 classes) received the placebo. The mean increment of dmfs in the experimental group was 24.2% lower than that in the control group (p < 0.05). The significant caries reduction was observed on approximal surfaces in the experimental group compared with the control group (p < 0.01), but there were no differences on occlusal surfaces (p > 0.05). A bi-annual professional application of APF foam was effective in reducing the increment of dental caries in the primary teeth.
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Affiliation(s)
- H Jiang
- Department of Preventive Dentistry, School of Stomatology, Wuhan University, Luoyu Road 237, Wuhan City, China 430079
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Singh P, Ajmera DH, Xiao SS, Yang XZ, Liu X, Peng B. Analysis of potential dynamic concealed factors in the difficulty of lower third molar extraction. Med Oral Patol Oral Cir Bucal 2016; 21:e713-e723. [PMID: 27694781 PMCID: PMC5116113 DOI: 10.4317/medoral.21211] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Accepted: 04/27/2016] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND The purpose of this study was to identify potential concealed variables associated with the difficulty of lower third molar (M3) extractions. MATERIAL AND METHODS To address the research purpose, we implemented a prospective study and enrolled a sample of subjects presenting for M3 removal. Predictor variables were categorized into Group-I and Group-II, based on predetermined criteria. The primary outcome variable was the difficulty of extraction, measured as extraction time. Appropriate univariate and multivariate statistics were computed using ordinal logistic regression. RESULTS The sample comprised of 1235 subjects with a mean age of 29.49 +/- 8.92 years in Group-I and 26.20 +/- 11.55 years in Group-II subjects. The mean operating time per M3 extraction was 21.24 +/- 12.80 and 20.24 +/- 12.50 minutes for Group-I and Group-II subjects respectively. Three linear parameters including B-M2 height (distance between imaginary point B on the inferior border of mandibular body, and M2), lingual cortical thickness, bone density and one angular parameter including Rc-Cs angle (angle between ramus curvature and curve of spee), in addition to patient's age, profile type, facial type, cant of occlusal plane, and decreased overbite, were found to be statistically associated ( p < or = 0.05) with extraction difficulty under regression models. CONCLUSIONS In conclusion, our study indicates that the difficulty of lower M3 extractions is possibly governed by morphological and biomechanical factors with substantial influence of myofunctional factors. PRACTICAL IMPLICATIONS Preoperative evaluation of dynamic concealed factors may not only help in envisaging the difficulty and planning of surgical approach but might also help in better time management in clinical practice.
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Affiliation(s)
- P Singh
- Department of Oral & Maxillofacial Surgery, Chongqing Medical University, Chongqing, 400016, China,
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Cheng M, Peng B, You Y. A case of placental mesenchymal dysplasia with one year follow-up. CLIN EXP OBSTET GYN 2016. [DOI: 10.12891/ceog3072.2016] [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: 11/01/2022]
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Abstract
We have simulated the invasion of a polyelectrolyte complex made of a polycation chain and a polyanion chain, by another longer polyanion chain, using the coarse-grained united atom model for the chains and the Langevin dynamics methodology. Our simulations reveal many intricate details of the substitution reaction in terms of conformational changes of the chains and competition between the invading chain and the chain being displaced for the common complementary chain. We show that the invading chain is required to be sufficiently longer than the chain being displaced for effecting the substitution. Yet, having the invading chain to be longer than a certain threshold value does not reduce the substitution time much further. While most of the simulations were carried out in salt-free conditions, we show that presence of salt facilitates the substitution reaction and reduces the substitution time. Analysis of our data shows that the dominant driving force for the substitution process involving polyelectrolytes lies in the release of counterions during the substitution.
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Affiliation(s)
- B Peng
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA
| | - M Muthukumar
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA
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Kun Q, Peng B, Huang D, Huang P, Li H, He R, Sihoe A. P-231NON-INTUBATED UNIPORTAL ANATOMICAL LUNG RESECTION: A PROPENSITY SCORE MATCHED ANALYSIS SHOWS THAT FASTER RECOVERY IS POSSIBLE EVEN IN THE EARLY EXPERIENCE. Interact Cardiovasc Thorac Surg 2016. [DOI: 10.1093/icvts/ivw260.229] [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: 11/13/2022] Open
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Peng B, Zhan H, Yong P, Leung P, Lin J, Bedaiwy M. Up-regulated hyaluronan synthase 2 mediates epidermal growth factor-induced cell migration and invasion in human endometriotic stromal cells. Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2016.07.797] [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: 11/29/2022]
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Hu Y, Niu X, Wang G, Huang J, Liu M, Peng B. Chronic prostatitis/chronic pelvic pain syndrome impairs erectile function through increased endothelial dysfunction, oxidative stress, apoptosis, and corporal fibrosis in a rat model. Andrology 2016; 4:1209-1216. [PMID: 27565759 DOI: 10.1111/andr.12273] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 06/29/2016] [Accepted: 07/19/2016] [Indexed: 12/22/2022]
Affiliation(s)
- Y. Hu
- Department of Urology; Shanghai Tenth People's Hospital Affiliated to the Tongji University; Shanghai China
| | - X. Niu
- Department of Urology; Shanghai Tenth People's Hospital Affiliated to the Tongji University; Shanghai China
| | - G. Wang
- Department of Urology; Shanghai Tenth People's Hospital Affiliated to the Tongji University; Shanghai China
| | - J. Huang
- Department of Urology; Shanghai Tenth People's Hospital Affiliated to the Tongji University; Shanghai China
| | - M. Liu
- Department of Urology; Shanghai Tenth People's Hospital Affiliated to the Tongji University; Shanghai China
| | - B. Peng
- Department of Urology; Shanghai Tenth People's Hospital Affiliated to the Tongji University; Shanghai China
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Ben SB, Peng B, Wang GC, Li C, Gu HF, Jiang H, Meng XL, Lee BJ, Chen CL. Overexpression of Selenoprotein SelK in BGC-823 Cells Inhibits Cell Adhesion and Migration. Biochemistry (Mosc) 2016; 80:1344-53. [PMID: 26567579 DOI: 10.1134/s0006297915100168] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Effects of human selenoprotein SelK on the adhesion and migration ability of human gastric cancer BGC-823 cells using Matrigel adhesion and transwell migration assays, respectively, were investigated in this study. The Matrigel adhesion ability of BGC-823 cells that overexpressed SelK declined extremely significantly (p < 0.01) compared with that of the cells not expressing the protein. The migration ability of BGC-823 cells that overexpressed SelK also declined extremely significantly (p < 0.01). On the other hand, the Matrigel adhesion ability and migration ability of the cells that overexpressed C-terminally truncated SelK did not decline significantly. The Matrigel adhesion ability and migration ability of human embryonic kidney HEK-293 cells that overexpressed SelK did not show significant change (p > 0.05) with the cells that overexpressed the C-terminally truncated protein. In addition to the effect on Matrigel adhesion and migration, the overexpression of SelK also caused a loss in cell viability (as measured by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H tetrazolium bromide (MTT) colorimetric assay) and induced apoptosis as shown by confocal microscopy and flow cytometry. The cytosolic free Ca2+ level of these cells was significantly increased as detected by flow cytometry. But the overexpression of SelK in HEK-293 cells caused neither significant loss in cell viability nor apoptosis induction. Only the elevation of cytosolic free Ca2+ level in these cells was significant. Taken together, the results suggest that the overexpression of SelK can inhibit human cancer cell Matrigel adhesion and migration and cause both the loss in cell viability and induction of apoptosis. The release of intracellular Ca2+ from the endoplasmic reticulum might be a mechanism whereby the protein exerted its impact. Furthermore, only the full-length protein, but not C-terminally truncated form, was capable of producing such impact. The embryonic cells were not influenced by the elevation of free Ca2+ level in cytosol, probably due to their much greater tolerance to the variation.
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Affiliation(s)
- S B Ben
- School of Life Science, Liaoning University, Shenyang, 110036, China.
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69
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Lv F, Zhu L, Zhang J, Yu J, Cheng X, Peng B. Evaluation of the in vitro
biocompatibility of a new fast-setting ready-to-use root filling and repair material. Int Endod J 2016; 50:540-548. [PMID: 27214303 DOI: 10.1111/iej.12661] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Accepted: 05/17/2016] [Indexed: 11/29/2022]
Affiliation(s)
- F. Lv
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education; School and Hospital of Stomatology; Wuhan University; Wuhan China
| | - L. Zhu
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education; School and Hospital of Stomatology; Wuhan University; Wuhan China
| | - J. Zhang
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education; School and Hospital of Stomatology; Wuhan University; Wuhan China
| | - J. Yu
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education; School and Hospital of Stomatology; Wuhan University; Wuhan China
| | - X. Cheng
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education; School and Hospital of Stomatology; Wuhan University; Wuhan China
| | - B. Peng
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education; School and Hospital of Stomatology; Wuhan University; Wuhan China
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70
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Howansky A, Peng B, Lubinsky A, Zhao W. TH-CD-207B-06: Swank Factor of Segmented Scintillators in Multi-Slice CT Detectors: Pulse Height Spectra and Light Escape. Med Phys 2016. [DOI: 10.1118/1.4958212] [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: 11/07/2022] Open
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Peng X, Liu C, Peng B. Idiopathic massive fetomaternal hemorrhage in the third trimester of pregnancy causing neonatal death. CLIN EXP OBSTET GYN 2016. [DOI: 10.12891/ceog2097.2016] [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: 11/01/2022]
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72
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Peng X, Liu C, Peng B. Idiopathic massive fetomaternal hemorrhage in the third trimester of pregnancy causing neonatal death. CLIN EXP OBSTET GYN 2016; 43:284-286. [PMID: 27132431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Fetomaternal hemorrhage (FMH), which can occur throughout pregnancy, is still a poorly understood clinical condition. It is very difficult to be timely diagnosed and often results in poor pregnancy outcomes. Here the authors reported two rare cases of silent massive FMH of unknown cause in the third trimester of pregnancy, which presented with non-reactive fetal heart rhythm or decreased fetal movement at the very beginning, and resulted in severe fetal anemia and neonatal deaths. A pregnant woman at late pregnancy with a com- plain of unspecific signs such as decreased fetal movement should arouse a high index of clinical suspicion of idiopathic FMH, and an urgent ultrasound or lab tests detecting FMH could be suggested. Considering emergent delivery versus expectantly management will de- pend upon acute or chronic FMH, gestational age, results of fetal testing, availability of experienced personnel, and procedural difficulty.
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73
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Cheng M, Peng B, You Y. A case of placental mesenchymal dysplasia with one year follow-up. CLIN EXP OBSTET GYN 2016; 43:777-779. [PMID: 30074339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Placental mesenchymal dysplasia (PMD) is a rare placental disease with unknown etiology. Because of the malformation of the placenta, the incidence of the obstetric complications and the poor perinatal outcomes are higher than usual. PMD usually accompanies with Beckwith-Wiedemann syndrome. In this article, the authors report a case of PMD with a live delivery in 35+5 gestational weeks. The phenotype of the neonate was normal. During the one-year follow-up, the development of the child was normal.
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74
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Sato S, Heeley E, Arima H, Delcourt C, Hirakawa Y, Pamidimukkala V, Li Z, Tao Q, Xu Y, Hennerici MG, Robinson T, Tzourio C, Lindley RI, Chalmers J, Anderson CS, Anderson CS, Huang Y, Wang JG, Arima H, Neal B, Peng B, Heeley E, Skulina C, Parsons MW, Kim JS, Tao QL, Li YC, Jiang JD, Tai LW, Zhang LJ, Xu E, Cheng Y, Heritier S, Morgenstern LB, Chalmers J. Higher mortality in patients with right hemispheric intracerebral haemorrhage: INTERACT1 and 2. J Neurol Neurosurg Psychiatry 2015; 86:1319-23. [PMID: 25589782 DOI: 10.1136/jnnp-2014-309870] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 12/22/2014] [Indexed: 11/03/2022]
Abstract
BACKGROUND AND PURPOSE Controversy exists over the prognostic significance of the affected hemisphere in stroke. We aimed to determine the relationship between laterality of acute intracerebral haemorrhage (ICH) and poor clinical outcomes. METHODS A subsidiary analysis of the INTERACT Pilot and INTERACT2 studies--randomised controlled trials of patients with spontaneous acute ICH with elevated systolic blood pressure (BP), randomly assigned to intensive (target systolic BP <140 mm Hg) or guideline-based (<180 mm Hg) BP management. Outcomes were the combined and separate end points of death and major disability (modified Rankin scale (mRS) scores of 3-6, 6 and 3-5, respectively) at 90 days. RESULTS A total of 2708 patients had supratentorial/hemispheric ICH and information on mRS at 90 days. Patients with right hemispheric ICH (1327, 49%) had a higher risk of death at 90 days compared to those with left hemispheric ICH after adjustment for potential confounding variables (OR, 1.77 (95% CI 1.33 to 2.37)). There were no differences between patients with right and left hemispheric ICH regarding the combined end point of death or major disability or major disability in the multivariable-adjusted models (1.07 (0.89 to 1.29) and 0.85 (0.72 to 1.01), respectively). CONCLUSIONS Right hemispheric lesion was associated with increased risk of death in patients with acute ICH. The laterality of the ICH does not appear to affect the level of disability in survivors. TRIAL REGISTRATION NUMBER URL: http://www.clinicaltrials.gov. Unique identifier: NCT00226096 and NCT00716079.
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Affiliation(s)
- Shoichiro Sato
- The George Institute for Global Health, the University of Sydney and Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Emma Heeley
- The George Institute for Global Health, the University of Sydney and Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Hisatomi Arima
- The George Institute for Global Health, the University of Sydney and Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Candice Delcourt
- The George Institute for Global Health, the University of Sydney and Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Yoichiro Hirakawa
- The George Institute for Global Health, the University of Sydney and Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | | | - Zhendong Li
- Department of Neurology, The Fifth Affiliated Hospital, Sun Yat-Sen University, Guangdong, China
| | - Qingling Tao
- Department of Neurology, Chang Ning District Central Hospital, Shanghai, China
| | - Yuehong Xu
- Department of Neurology, Shijiazhuang 260 Hospital, Hebei, China
| | - Michael G Hennerici
- Department of Neurology, University of Heidelberg UMM Mannheim, Mannheim, Germany
| | - Thompson Robinson
- Department of Cardiovascular Sciences, and NIHR Biomedical Research Unit for Cardiovascular Diseases, University of Leicester, Leicester, UK
| | | | - Richard I Lindley
- The George Institute for Global Health, the University of Sydney and Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - John Chalmers
- The George Institute for Global Health, the University of Sydney and Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Craig S Anderson
- The George Institute for Global Health, the University of Sydney and Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
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Zhao D, Shen Y, Peng B, Haapasalo M. Effect of autoclave sterilization on the cyclic fatigue resistance of thermally treated Nickel-Titanium instruments. Int Endod J 2015; 49:990-5. [PMID: 26372255 DOI: 10.1111/iej.12550] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 09/09/2015] [Indexed: 11/26/2022]
Abstract
AIM To compare the cyclic fatigue resistance of HyFlex CM, Twisted Files (TF), K3XF, Race, and K3, and evaluate the effect of autoclave sterilization on the cyclic fatigue resistance of these instruments both before and after the files were cycled. METHODOLOGY Five types of NiTi instruments with similar size 30, .06 taper were selected: HyFlex CM, TF, K3XF, Race and K3. Files were tested in a simulated canal with a curvature of 60° and a radius of 3 mm. The number of cycles to failure of each instrument was determined to evaluate cyclic fatigue resistance. Each type of instruments was randomly divided into four experimental groups: group 1 (n = 20), unsterilized instruments; group 2 (n = 20), pre-sterilized instruments subjected to 10 cycles of autoclave sterilization; group 3 (n = 20), instruments tested were sterilized at 25%, 50% and 75% of the mean cycles to failure as determined in group 1, and then cycled to failure; group 4 (n = 20), instruments cycled in the same manner as group 3 but without sterilization. The fracture surfaces of instruments were examined by scanning electron microscopy (SEM). RESULTS HyFlex CM, TF and K3XF had significantly higher cyclic fatigue resistance than Race and K3 in the unsterilized group 1 (P < 0.05). Autoclave sterilization significantly increased the MCF of HyFlex CM and K3XF (P < 0.05) both before and after the files were cycled. SEM examination revealed a typical pattern of cyclic fatigue fracture in all instruments. CONCLUSIONS HyFlex CM, TF and K3XF instruments composed of new thermal-treated alloy were more resistant to fatigue failure than Race and K3. Autoclaving extended the cyclic fatigue life of HyFlex CM and K3XF.
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Affiliation(s)
- D Zhao
- Department of Operative Dentistry and Endodontics, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Y Shen
- Division of Endodontics, Department of Oral Biological & Medical Sciences, Faculty of Dentistry, The University of British Columbia, Vancouver, BC, Canada.,Department of Materials Engineering, The University of British Columbia, Vancouver, BC, Canada
| | - B Peng
- Department of Operative Dentistry and Endodontics, School and Hospital of Stomatology, Wuhan University, Wuhan, China.
| | - M Haapasalo
- Division of Endodontics, Department of Oral Biological & Medical Sciences, Faculty of Dentistry, The University of British Columbia, Vancouver, BC, Canada
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Munoz Venturelli P, Olavarría V, Brunser A, Lavados P, Pontes O, Arima H, Hackett M, Lim J, Middleton S, Watkins C, Robinson T, Peng B, Cui L, Lee H, Lin R, Anderson C. Head position in stroke trial (Headpost): an international cluster randomized trial. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.1407] [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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77
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Alkusayer G, Peng B, Klausen C, Lisonkova S, Kinloch M, Yong P, Bedaiwy M. Expression of HOXB4 in endometrial tissues from women with or without endometriosis. Fertil Steril 2015. [DOI: 10.1016/j.fertnstert.2015.07.489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Wu WH, Zhang MP, Yang SJ, Liu Q, Bai X, Qin JH, Peng B, Ou ST, Liu J, Zhao CY, Zhang Q, Hu QD, Xue L. Zhi-Long-Huo-Xue-Tong-Yu modulates mitochondrial fission through the ROCK1 pathway in mitochondrial dysfunction caused by streptozotocin-induced diabetic kidney injury. Genet Mol Res 2015; 14:4593-606. [PMID: 25966233 DOI: 10.4238/2015.may.4.18] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Zhi-Long-Huo-Xue-Tong-Yu (ZLHXTY) is a defined mixture of 5 herbs developed by Professor S.J. Yang according to the Buyang Huanwu decoction method, which has been recorded in the Yilingaicuo. This study investigated the renoprotective effects of ZLHXTY on mitochondrial dysfunction induced by diabetic kidney injury in a diabetic rat model. Diabetes was induced by a single intravenous injection of streptozotocin. Rats were daily fed either ZLHXTY or vehicle beginning in the 1st week after injection. Levels of mitofusin 2 (mfn2), dynamin-related protein 1 (Drp1), caspase-9, and rho-associated, coiled-coil-containing protein kinase 1 (ROCK1) were detected using Western blotting. Levels of intracellular calcium and adenosine triphosphate (ATP) were examined using an enzyme-linked immunosorbent assay. An electron microscopic examination of kidney tissue was performed. The levels of mfn2 and ATP in the diabetes and ZLHXTY groups decreased from the 4th week after modeling. The expression levels of Drp1, ROCK1, and caspase-9 increased in the diabetes group but decreased in the ZLHXTY group from the 4th week after modeling. Compared with the diabetes group, ZLHXTY treatment decreased the mesangial expansion index and proteinuria levels, and improved the pathological changes typical of diabetic kidney injury. Furthermore, ZLHXTY treatment inhibited the activation of ROCK1 and expression of Drp1 and caspase-9, but did not affect the expression of mfn2. This study indicates that ZLHXTY treatment could protect kidney tissue from diabetic injury through the ROCK1 pathway response to mitochondrial dysfunction induced by diabetes.
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Affiliation(s)
- W H Wu
- Department of Nephropathy, Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan, China
| | - M P Zhang
- Department of Nephrology, Traditional Chinese Medical Hospital, Luzhou Medical College, Luzhou, Sichuan, China
| | - S J Yang
- Department of Cardiology, Traditional Chinese Medical Hospital, Luzhou Medical College, Luzhou, Sichuan, China
| | - Q Liu
- Department of Nephropathy, Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan, China
| | - X Bai
- Department of Cardiology, Traditional Chinese Medical Hospital, Luzhou Medical College, Luzhou, Sichuan, China
| | - J H Qin
- Department of Nephropathy, Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan, China
| | - B Peng
- Department of Nephropathy, Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan, China
| | - S T Ou
- Department of Nephropathy, Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan, China
| | - J Liu
- Department of Nephropathy, Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan, China
| | - C Y Zhao
- Department of Nephrology, Traditional Chinese Medical Hospital, Luzhou Medical College, Luzhou, Sichuan, China
| | - Q Zhang
- Department of Nephrology, Traditional Chinese Medical Hospital, Luzhou Medical College, Luzhou, Sichuan, China
| | - Q D Hu
- Department of Nephrology, Traditional Chinese Medical Hospital, Luzhou Medical College, Luzhou, Sichuan, China
| | - L Xue
- Department of Urology, Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan, China
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Ma Y, Zhu F, Abidin Z, Pang F, Li S, Abd-Alhameed R, See C, Fan J, Liu L, Chai X, Jin C, Peng B. Vivaldi antenna with balun feed for SKA feeding system in UWB. 2015 1st URSI Atlantic Radio Science Conference (URSI AT-RASC) 2015. [DOI: 10.1109/ursi-at-rasc.2015.7303191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Zhang J, Zhu LX, Cheng X, Lin Y, Yan P, Peng B. Promotion of Dental Pulp Cell Migration and Pulp Repair by a Bioceramic Putty Involving FGFR-mediated Signaling Pathways. J Dent Res 2015; 94:853-62. [PMID: 25724555 DOI: 10.1177/0022034515572020] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Mineral trioxide aggregate is the currently recommended material of choice for clinical pulp repair despite several disadvantages, including handling inconvenience. Little is known about the signaling mechanisms involved in bioceramic-mediated dental pulp repair-particularly, dental pulp cell (DPC) migration. This study evaluated the effects of iRoot BP Plus, a novel ready-to-use nanoparticulate bioceramic putty, on DPC migration in vitro and pulp repair in vivo, focusing on possible involvement of fibroblast growth factor receptor (FGFR)-related signaling, including mitogen-activated protein kinase and Akt pathways. Treatment with iRoot BP Plus extracts enhanced horizontal and vertical migration of DPCs, which was comparable with the effects induced by mineral trioxide aggregate extracts. The DPCs exposed to iRoot BP Plus extracts demonstrated no evident apoptosis. Importantly, treatment with iRoot BP Plus extracts resulted in rapid activation of FGFR, p38 mitogen-activated protein kinase, extracellular signal-regulated kinase (ERK) 1/2, c-Jun-N-terminal kinase (JNK), and Akt signaling in DPCs. Confocal immunofluorescence staining revealed that iRoot BP Plus stimulated focal adhesion formation and stress fiber assembly in DPCs, in addition to upregulating the expression of focal adhesion molecules, including p-focal adhesion kinase, p-paxillin, and vinculin. Moreover, activation of FGFR, ERK, JNK, and Akt were found to mediate the upregulated expression of focal adhesion molecules, stress fiber assembly, and enhanced DPC migration induced by iRoot BP Plus. Consistent with the in vitro results, we observed induction of homogeneous dentin bridge formation and expression of p-focal adhesion kinase, p-FGFR, p-ERK 1/2, p-JNK, and p-Akt near injury sites by iRoot BP Plus in an in vivo pulp repair model. These data demonstrate that iRoot BP Plus can promote DPC migration and pulp repair involving the FGFR-mediated ERK 1/2, JNK, and Akt pathways. These findings provide valuable insights into the signaling mechanisms underlying nanoparticulate bioceramic-mediated pulp repair.
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Affiliation(s)
- J Zhang
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - L X Zhu
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - X Cheng
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Y Lin
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - P Yan
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - B Peng
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
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Chai Y, Peng B, Dai L, Qian W, Zhang Y, Zhang JY. Autoantibodies response to MDM2 and p53 in the immunodiagnosis of esophageal squamous cell carcinoma. Scand J Immunol 2015; 80:362-8. [PMID: 24965442 DOI: 10.1111/sji.12202] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Accepted: 06/05/2014] [Indexed: 01/01/2023]
Abstract
The human homologue of the mouse double minute 2 (MDM2) is known to be overexpressed in a variety of human malignancies. As one of E3 ubiquitin-protein ligases, MDM2 interacts with the tumour suppressor p53 by mediating ubiquitination and degradation of p53. Since abnormally expressed proteins can induce autoimmune response, to further examine whether sera from patients with esophageal squamous cell carcinoma (ESCC) exhibited immunoreactivity against MDM2 and p53, autoantibody responses to MDM2 and p53 were evaluated by enzyme-linked immunosorbent assay (ELISA) in sera from patients with ESCC and normal individuals. Positive results were also confirmed by Western blotting and indirect immunofluorescence assay. The results demonstrated that the positive rate of autoantibody against p53 and MDM2 in ESCC sera was 22.9% (36/157) and 14.0% (22/157), whereas this rate was 0% (0/85) and 1.2% (1/85), respectively, in normal individuals. Some of the sera with antibodies specific for MDM2 also contained antibodies against p53. And there was an increase of positive antibody reactions reaching a frequency of 35% (55/157) combination with MDM2 and p53. This was significantly higher than the frequency of antibodies in normal individuals (P < 0.01). Our preliminary results suggest that autoantibodies against MDM2 and p53 may be useful serum biomarkers in the immunodiagnosis of ESCC.
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Affiliation(s)
- Y Chai
- Center for Tumor Biotherapy, The First Affiliated Hospital, College of Public Health, Zhengzhou University, Zhengzhou, Henan, 450052, China ; Department of Biological Sciences, The University of Texas at El Paso, 500 W. University Ave., El Paso, TX, 79968, USA
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Xue X, Zhou Z, Peng B, Zhu MM, Zhang YJ, Ren W, Ye ZG, Chen X, Liu M. Review on nanomaterials synthesized by vapor transport method: growth and their related applications. RSC Adv 2015. [DOI: 10.1039/c5ra13349a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nanostructures with different dimensions, including bulk crystals, thin films, nanowires, nanobelts and nanorods, have received considerable attention due to their novel functionalities and outstanding applications in various areas.
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Affiliation(s)
- X. Xue
- Electronic Materials Research Laboratory
- Key Laboratory of the Ministry of Education & International Center for Dielectric Research
- Xi'an Jiaotong University
- Xi'an 710049, China
| | - Z. Zhou
- Energy Systems Division
- Argonne National Laboratory
- Lemont, USA
| | - B. Peng
- Electronic Materials Research Laboratory
- Key Laboratory of the Ministry of Education & International Center for Dielectric Research
- Xi'an Jiaotong University
- Xi'an 710049, China
| | - M. M. Zhu
- Electronic Materials Research Laboratory
- Key Laboratory of the Ministry of Education & International Center for Dielectric Research
- Xi'an Jiaotong University
- Xi'an 710049, China
| | - Y. J. Zhang
- Electronic Materials Research Laboratory
- Key Laboratory of the Ministry of Education & International Center for Dielectric Research
- Xi'an Jiaotong University
- Xi'an 710049, China
| | - W. Ren
- Electronic Materials Research Laboratory
- Key Laboratory of the Ministry of Education & International Center for Dielectric Research
- Xi'an Jiaotong University
- Xi'an 710049, China
| | - Z. G. Ye
- Electronic Materials Research Laboratory
- Key Laboratory of the Ministry of Education & International Center for Dielectric Research
- Xi'an Jiaotong University
- Xi'an 710049, China
| | - X. Chen
- Energy Systems Division
- Argonne National Laboratory
- Lemont, USA
| | - M. Liu
- Electronic Materials Research Laboratory
- Key Laboratory of the Ministry of Education & International Center for Dielectric Research
- Xi'an Jiaotong University
- Xi'an 710049, China
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Zhang J, Zhu L, Peng B. Effect of BioAggregate on osteoclast differentiation and inflammatory bone resorption in vivo. Int Endod J 2014; 48:1077-85. [PMID: 25358857 DOI: 10.1111/iej.12405] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Accepted: 10/27/2014] [Indexed: 12/15/2022]
Abstract
AIM To investigate the effect of BioAggregate (Innovative Bioceramix, Vancouver, BC, Canada) on lipopolysaccharide (LPS)-induced bone destruction in vivo and to compare its performance with that of mineral trioxide aggregate (MTA; Dentsply Tulsa Dental, Tulsa, OK, USA). METHODOLOGY Mouse bone marrow macrophages (BMMs) were primary cultured and treated with several concentrations of BioAggregate and MTA extracts. Cell viability was measured with a Cell Counting Kit-8 assay, whilst in vitro osteoclast differentiation was evaluated with tartrate-resistant acid phosphatase (TRAP) staining. LPS-induced mouse calvarial bone destruction model was established to assess the effect of BioAggregate and MTA extracts in vivo. Mice were killed on day 7, and calvarial bones were prepared for microcomputed tomography scanning, histologic analysis and double-immunofluorescence staining. Statistical tests used were one-way anova followed by Student-Newman-Keuls test. RESULTS BioAggregate extracts displayed no obvious cytotoxicity to BMMs and significantly inhibited (P < 0.01) the differentiation of RANKL-stimulated BMMs. Comparable effects were induced by MTA. BioAggregate and MTA extracts markedly reduced (P < 0.01) osteoclast numbers and attenuated (P < 0.05) bone resorption in LPS-challenged mouse calvaria. The expression levels of osteoclastogenic cathepsin K and its upstream regulator nuclear factor of activated T-cell cytoplasmic 1 and c-Fos were also decreased by BioAggregate and MTA extracts. CONCLUSIONS BioAggregate and MTA showed comparable inhibitory effect on osteoclast differentiation and inflammatory bone resorption in vivo.
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Affiliation(s)
- J Zhang
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - L Zhu
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - B Peng
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
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84
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Peng B, Ozdemir .K, Rotter S, Yilmaz H, Liertzer M, Monifi F, Bender CM, Nori F, Yang L. Loss-induced suppression and revival of lasing. Science 2014; 346:328-32. [DOI: 10.1126/science.1258004] [Citation(s) in RCA: 609] [Impact Index Per Article: 60.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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85
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Ma Y, Abd-Alhameed RA, Zhou D, See C, Abidin Z, Jin C, Peng B. Loop feed meander-line Antenna RFID tag design for UHF band. 2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS) 2014. [DOI: 10.1109/ursigass.2014.6929405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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86
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Xiong H, Wei L, Peng B. IL-17 stimulates the production of the inflammatory chemokines IL-6 and IL-8 in human dental pulp fibroblasts. Int Endod J 2014; 48:505-11. [DOI: 10.1111/iej.12339] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2014] [Accepted: 06/19/2014] [Indexed: 11/28/2022]
Affiliation(s)
- H. Xiong
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education; School and Hospital of Stomatology; Wuhan University; Wuhan China
| | - L. Wei
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education; School and Hospital of Stomatology; Wuhan University; Wuhan China
| | - B. Peng
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education; School and Hospital of Stomatology; Wuhan University; Wuhan China
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87
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Ma JZ, Shen Y, Al-Ashaw AJ, Khaleel HY, Yang Y, Wang ZJ, Peng B, Haapasalo M. Micro-computed tomography evaluation of the removal of calcium hydroxide medicament from C-shaped root canals of mandibular second molars. Int Endod J 2014; 48:333-41. [DOI: 10.1111/iej.12319] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Accepted: 05/22/2014] [Indexed: 11/28/2022]
Affiliation(s)
- J. Z. Ma
- Department of Stomatology; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - Y. Shen
- Division of Endodontics; Department of Oral Biological and Medical Sciences; Faculty of Dentistry; University of British Columbia; Vancouver BC Canada
- Department of Materials Engineering; University of British Columbia; Vancouver BC Canada
| | - A. J. Al-Ashaw
- Department of Stomatology; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
- Conservative Department; College of Dentistry; Mosul University; Mosul Iraq
| | - H. Y. Khaleel
- Department of Stomatology; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
- Conservative Department; College of Dentistry; Mosul University; Mosul Iraq
| | - Y. Yang
- Department of Stomatology; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - Z. J. Wang
- Division of Endodontics; Department of Oral Biological and Medical Sciences; Faculty of Dentistry; University of British Columbia; Vancouver BC Canada
| | - B. Peng
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education; School and Hospital of Stomatology; Wuhan University; Wuhan China
| | - M. Haapasalo
- Division of Endodontics; Department of Oral Biological and Medical Sciences; Faculty of Dentistry; University of British Columbia; Vancouver BC Canada
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88
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Peng B, Lubinsky A, Teymurazyan A, Zheng H, Zhao W. SU-E-I-11: Cascaded Linear System Model for Columnar CsI Flat Panel Imagers with Depth Dependent Gain and Blur. Med Phys 2014. [DOI: 10.1118/1.4887959] [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: 11/07/2022] Open
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89
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Huang JH, Peng B, Zheng JH. Thulium laser resection for bladder neck obstruction in women. MINERVA UROL NEFROL 2014; 66:113-117. [PMID: 24988202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
AIM The aim of this paper was to investigate the efficacy of thulium laser resection of bladder neck in women with bladder neck obstruction (BNO). METHODS Clinical information of 86 women with BNO who were treated in our hospital from Jan 2011 to Dec 2012 was retrospectively reviewed; 46 patients received thulium laser resection (group 1), and the remaining patients were treated with standard electric resection (group 2). Maximum urinary flow rate (MFR), residual urine volume (RV), overactive bladder symptom score (OABSS) and quality of life (QOL) were determined before and after surgery. These patients were followed up at 1 week, 3 months, and 12 months after surgery. RESULTS The RV levels after surgery in groups 1 were significantly lower than those before operation. MFR significantly increased after surgery when compared with preoperation, OABSS and QOL score markedly decreased at 3 months after surgery (P<0.05). Thulium laser resection had advantages in postoperative catheter retaining time (2.18±0.73 d vs. 4.24±1.01 d), postoperative hospitalization time (3.25±0.61 d vs. 4.73±1.41 d), Intraoperative blood loss (11.5±1.53 mL vs. 32.32±8.53 mL) and total cost ($1415±71 vs. $1148±59) over standard electric resection (P<0.05), but the operative time was comparable between two groups (18.36±5.45 min vs. 19.25±7.08 min) (P >0.05). In group 2, urethral stricture was seen in 1 patient, and two patients suffered from temporary incontinence, being back to normal in one month. However, urethral stricture and incontinence were not observed in group 1. CONCLUSION Thulium laser resection is a simple, safe and effective strategy for the treatment of bladder neck obstruction in women.
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Affiliation(s)
- J H Huang
- Department of Urology Shanghai Tenth People's Hospital Tongji University, Shanghai, China
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90
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Alnuaimi A, Wiesenfeld D, O'Brien-Simpson N, Reynolds E, Peng B, McCullough M. The development and validation of a rapid genetic method for species identification and genotyping of medically important fungal pathogens using high-resolution melting curve analysis. Mol Oral Microbiol 2014; 29:117-30. [DOI: 10.1111/omi.12050] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2014] [Indexed: 11/26/2022]
Affiliation(s)
- A.D. Alnuaimi
- Melbourne Dental School; Oral Health CRC; The University of Melbourne; Melbourne Vic. Australia
| | - D. Wiesenfeld
- Melbourne Dental School; Oral Health CRC; The University of Melbourne; Melbourne Vic. Australia
- Head and Neck Oncology; The Royal Melbourne Hospital; Melbourne Vic. Australia
| | - N.M. O'Brien-Simpson
- Melbourne Dental School; Oral Health CRC; The University of Melbourne; Melbourne Vic. Australia
| | - E.C. Reynolds
- Melbourne Dental School; Oral Health CRC; The University of Melbourne; Melbourne Vic. Australia
| | - B. Peng
- Melbourne Dental School; Oral Health CRC; The University of Melbourne; Melbourne Vic. Australia
| | - M.J. McCullough
- Melbourne Dental School; Oral Health CRC; The University of Melbourne; Melbourne Vic. Australia
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91
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Sun Z, Wang L, Peng B. Kinetics of glycogen synthase kinase (GSK)3β and phosphorylated GSK3β (Ser 9) expression in experimentally induced periapical lesions. Int Endod J 2014; 47:1107-16. [PMID: 24494585 DOI: 10.1111/iej.12258] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Accepted: 01/29/2014] [Indexed: 02/05/2023]
Abstract
AIM To investigate the kinetics of GSK3β and p-GSK3β (Ser 9) expression in experimentally induced rat periapical lesions and to explore their possible functions in the pathogenesis of periapical lesions. METHODOLOGY Periapical lesions were established in Wistar rats by occlusal pulp exposure in mandibular first molar teeth. The animals were killed on days 0, 7, 14, 21 and 28. Micro-computed tomographic, histological and enzyme histochemical analyses were performed to detect the progression of periapical lesions. Immunohistochemistry, double-dye immunofluorescence and Western blot were performed to determine the expression of GSK3β and p-GSK3β (Ser 9) in periapical tissues. RESULTS From day 0 to day 28, the lesion volume and area gradually expanded, and the GSK3β-positive cells gradually ascended. A few p-GSK3β (Ser 9)-positive cells and osteoclasts appeared on day 7 and then climaxed on day 14. The numbers then simultaneously decreased from day 21 to day 28. Western blot analysis revealed that p-GSK3β (Ser 9) and GSK3β proteins were expressed at all time-points. The positive cells and protein expression ratio of p-GSK3β (Ser 9) against GSK3β increased from day 0 to day 14 and then decreased from day 14 to day 28. Finally, double-dye immunofluorescence assay revealed that p-GSK3β (Ser 9)-positive and RANKL-positive cells were co-localized around periapical lesions on days 14 and 28. CONCLUSIONS GSK3β and p-GSK3β (Ser 9) can be observed and may be involved in alveolar bone resorption and inflammatory response in periapical lesions, as well as associated with periapical lesion pathogenesis.
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Affiliation(s)
- Z Sun
- School and Hospital of Stomatology, Wuhan University, Wuhan, China
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92
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Zhai W, Yao XD, Xu YF, Peng B, Zhang HM, Liu M, Huang JH, Wang GC, Zheng JH. Transcriptome profiling of prostate tumor and matched normal samples by RNA-Seq. Eur Rev Med Pharmacol Sci 2014; 18:1354-1360. [PMID: 24867513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND RNA-Sequencing (RNA-Seq) has greatly influenced cancer researches, and it provides an unprecedented resolution in estimating gene expression and has less signal noises compared to cDNA microarray. AIM We aimed to identify a list of protein-coding genes and lincRNAs that are expressed differentially between tumor and normal tissues. MATERIALS AND METHODS In this study, we analyzed including 10 human prostate tumor tissues and their matched normal tissues transcriptome dataset generated by recently developed RNA-Seq technology. RESULTS By aligning short reads to human RefSeq genes and lincRNAs, we identified 10 RefSeq genes that were differentially expressed between tumor and normal samples with a p-value < 0.05, which were sufficiently enough to distinguish these two groups. Further loosing the p-value cutoff to 0.1 identified an lincRNA which is antisense to Cullin-associated and neddulation-dissociated 1 (CAND1), whose expression is repressed in prostate tumor cells. By examining the expression of CAND1 and its antisense lincRNA in the transcriptome dataset, we found an interaction between them as high expression of CAND1 and low expression of lincRNA is normal samples, and verse visa in tumor samples. CONCLUSIONS These findings suggest the important usage of RNA-Seq in cancer studies for biomarker development and functional investigation.
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Affiliation(s)
- W Zhai
- Department of Urology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.
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93
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Zhou S, Yu P, Guan L, Xing A, Liu S, Xiong Q, Peng B. NOD1 expression elicited by iE-DAP in first trimester human trophoblast cells and its potential role in infection-associated inflammation. Eur J Obstet Gynecol Reprod Biol 2013; 170:318-23. [PMID: 24041848 DOI: 10.1016/j.ejogrb.2013.04.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Revised: 12/27/2012] [Accepted: 04/29/2013] [Indexed: 12/28/2022]
Abstract
OBJECTIVES The underlying mechanisms of protective immunity of placental trophoblast cells against bacterial infection remain largely unknown. NOD1 are intracellular pattern recognition receptors that are activated by bacterial peptides and mediate innate immunity. This study aimed to investigate the expression and function of NOD1 in first trimester trophoblast cells, and evaluate the potential role of trophoblast cells in infection-associated inflammation. STUDY DESIGN Human extravillous trophoblast cell line HTR8 cells were stimulated with various concentrations of iE-DAP for various periods of time. NOD1 expression was detected by immunofluorescence, and the changes in NOD1 and RICK mRNA and protein in H8 cells were determined by real-time polymerase chain reaction and Western blot analysis. The concentrations of interleukin (IL)-8 and IL-6 secreted by H8 cells were examined by enzyme-linked immunosorbent assay. NF-κB transcription activity and P65 expression were detected by electrophoretic mobility shift assay and Western blot analysis. RESULTS H8 cells expressed NOD1, and the effects of iE-DAP on NOD1 were dose- and time-dependent. The concentration of IL-8 increased gradually with increasing concentration of iE-DAP, and the levels of IL-8 and IL-6 were associated with the duration of exposure to iE-DAP. The dose of iE-DAP was significantly associated with expression of RICK and P65, and stimulation of H8 cells by iE-DAP altered NF-κB transcription activity. CONCLUSIONS NOD1 may have a role in mediating infection-associated inflammation. Once iE-DAP is recognized by NOD1, the inflammatory response may be induced via NOD1-RICK-NF-κB-mediated pathways.
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Affiliation(s)
- S Zhou
- Department of Obstetrics and Gynaecology, West China Second University Hospital, Sichuan University, Chengdu, China
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94
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Fu B, Zhou JZ, Li YH, Peng B, Liu LY, Wen JQ. Novel recursive and symmetric algorithm of fast computing two kinds of orthogonal radial moments. The Imaging Science Journal 2013. [DOI: 10.1179/174313108x299552] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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95
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Wang L, Sun Z, Liu L, Peng B. Expression of CX3CL1 and its receptor, CX3CR1, in the development of periapical lesions. Int Endod J 2013; 47:271-9. [PMID: 23829599 DOI: 10.1111/iej.12143] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2013] [Accepted: 05/26/2013] [Indexed: 01/09/2023]
Affiliation(s)
- L. Wang
- Department of Operative Dentistry and Endodontics; School and Hospital of Stomatology; Wuhan University; Wuhan China
| | - Z. Sun
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education; School and Hospital of Stomatology; Wuhan University; Wuhan China
| | - L. Liu
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education; School and Hospital of Stomatology; Wuhan University; Wuhan China
| | - B. Peng
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education; School and Hospital of Stomatology; Wuhan University; Wuhan China
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96
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Hu Y, Xiong H, Peng B. Expression of a cytokine, interleukin-23, in experimental periapical lesions. Int Endod J 2013; 46:896-903. [PMID: 23520984 DOI: 10.1111/iej.12077] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Accepted: 01/29/2013] [Indexed: 11/27/2022]
Abstract
AIM To investigate the expression of interleukin (IL)-23, a new member of the IL-12 family, in experimental periapical lesions. METHODOLOGY Periapical lesions were induced in Wistar rats by occlusal surface pulp exposure in mandibular first molars. The rats were randomly sacrificed 0, 7, 14, 21, 28, 35, 42 and 56 days after pulp exposure. The jaws that contained the first molars were obtained and routinely prepared for radiographic, histological, enzyme histochemical, immunohistochemical and double immunofluorescence analyses. Data were analysed by one-way analysis of variance and the Pearson correlation test. RESULTS The number of IL-23-positive cells increased from day 7 to day 35 and then gradually decreased. The number of osteoclasts increased and peaked on day 14 and then gradually decreased from day 21 to day 56. A significant positive correlation existed between the number of IL-23 positive cells and the size of bone resorption in periapical lesions from day 7 to day 56 (r = 0.875, P < 0.01). CONCLUSIONS Interleukin-23 can be observed and may be associated with inflammatory response and bone resorption in periapical lesions.
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Affiliation(s)
- Y Hu
- School and Hospital of Stomatology, Wuhan University, Wuhan, China
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97
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Luo W, Li S, Peng B, Ye Y, Deng X, Yao K. Embryonic stem cells markers SOX2, OCT4 and Nanog expression and their correlations with epithelial-mesenchymal transition in nasopharyngeal carcinoma. PLoS One 2013; 8:e56324. [PMID: 23424657 PMCID: PMC3570418 DOI: 10.1371/journal.pone.0056324] [Citation(s) in RCA: 138] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Accepted: 01/08/2013] [Indexed: 02/07/2023] Open
Abstract
Expression of embryonic stem cells (ESCs) markers (SOX2, OCT4, Nanog and Nestin) is crucial for progression of various human malignancies. The purpose of this study was to investigate the expression and prognostic impact of these molecules in nasopharyngeal carcinoma (NPC) patients by immunohistochemistry and immunofluorescence. In the present study, we found that the expression levels of SOX2, OCT4 and Nanog were highly expressed in NPC compared with the non-tumorous tissues. Furthermore, these proteins correlated significantly with several clinicalpathological factors and epithelial-mesenchymal transition (EMT)-associated indicators (E-cadherin/N-cadherin and Snail). In multivariate analyses, high expression of OCT4 (P = 0.013) and Nanog (P = 0.040), but not that of SOX2, was associated with worse survival and had strongly independent prognostic effects. Of note, OCT4 and Nanog were more frequently located at the invasive front of tumors, and correlated significantly with various aggressive behaviors including T classification, N classification, M classification and clinical stage. Furthermore, patients with co-expression of OCT4 and Nanog in the invasive front had significantly worse survival (P = 0.005). Interestingly, at the invasive front, these molecules correlated significantly with Nestin expression in endothelial cells (P<0.001). These findings provide evidence that ESCs biomarkers OCT4 and Nanog serves as independent prognostic factors for NPC. Additionally, cancer cells in the invasive front of NPC acquiring ESCs-like features should be maintained by vascular niches.
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Affiliation(s)
- Weiren Luo
- Department of Pathology, Secondary Clinical College, Guangdong Medical College, Dongguan, People's Republic of China
- Cancer Research Institute, Southern Medical University, Guangzhou, People's Republic of China
| | - Siyi Li
- Department of Pathology, Secondary Clinical College, Guangdong Medical College, Dongguan, People's Republic of China
| | - Bailu Peng
- Cancer Research Institute, Southern Medical University, Guangzhou, People's Republic of China
| | - Yanfen Ye
- Cancer Research Institute, Southern Medical University, Guangzhou, People's Republic of China
| | - Xubin Deng
- Cancer Research Institute, Southern Medical University, Guangzhou, People's Republic of China
| | - Kaitai Yao
- Cancer Research Institute, Southern Medical University, Guangzhou, People's Republic of China
- * E-mail:
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98
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Piao FY, Peng B, Zhang WB, Zhang W, Han RB. Synthesis and Biological Evaluation of 9-alkoxy-6,7-dihydro-5H-benzo[c] [1,2,4]triazolo[4,3-a]azepines as Potential Anticonvulsant Agents. ACTA ACUST UNITED AC 2012; 62:202-7. [DOI: 10.1055/s-0031-1301295] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- F.-Y. Piao
- Department of Chemistry, College of Science, Yanbian University, Jilin Province, P.R. China
| | - B. Peng
- Department of Chemistry, College of Science, Yanbian University, Jilin Province, P.R. China
| | - W.-B. Zhang
- Department of Chemistry, College of Science, Yanbian University, Jilin Province, P.R. China
| | - W. Zhang
- Department of Chemistry, College of Science, Yanbian University, Jilin Province, P.R. China
| | - R.-B. Han
- Department of Chemistry, College of Science, Yanbian University, Jilin Province, P.R. China
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules (Yanbian University), Ministry of Education, Jilin Province, P. R. China
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99
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Ling J, Kang Y, Zhao R, Xia Q, Lee DF, Chang Z, Li J, Peng B, Fleming JB, Wang H, Liu J, Lemischka IR, Hung MC, Chiao PJ. KrasG12D-induced IKK2/β/NF-κB activation by IL-1α and p62 feedforward loops is required for development of pancreatic ductal adenocarcinoma. Cancer Cell 2012; 21:105-20. [PMID: 22264792 PMCID: PMC3360958 DOI: 10.1016/j.ccr.2011.12.006] [Citation(s) in RCA: 390] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2011] [Revised: 11/02/2011] [Accepted: 12/13/2011] [Indexed: 12/16/2022]
Abstract
Constitutive Kras and NF-κB activation is identified as signature alterations in pancreatic ductal adenocarcinoma (PDAC). However, how NF-κB is activated in PDAC is not yet understood. Here, we report that pancreas-targeted IKK2/β inactivation inhibited NF-κB activation and PDAC development in Kras(G12D) and Kras(G12D);Ink4a/Arf(F/F) mice, demonstrating a mechanistic link between IKK2/β and Kras(G12D) in PDAC inception. Our findings reveal that Kras(G12D)-activated AP-1 induces IL-1α, which, in turn, activates NF-κB and its target genes IL-1α and p62, to initiate IL-1α/p62 feedforward loops for inducing and sustaining NF-κB activity. Furthermore, IL-1α overexpression correlates with Kras mutation, NF-κB activity, and poor survival in PDAC patients. Therefore, our findings demonstrate the mechanism by which IKK2/β/NF-κB is activated by Kras(G12D) through dual feedforward loops of IL-1α/p62.
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Affiliation(s)
- Jianhua Ling
- Department of Molecular and Cellular Oncology, The University of Texas M.D. Anderson Cancer Centre, Houston, TX 77030, USA
| | - Ya’an Kang
- Department of Surgical Oncology, The University of Texas M.D. Anderson Cancer Centre, Houston, TX 77030, USA
| | - Ruiying Zhao
- Department of Molecular and Cellular Oncology, The University of Texas M.D. Anderson Cancer Centre, Houston, TX 77030, USA
| | - Qianghua Xia
- Department of Molecular and Cellular Oncology, The University of Texas M.D. Anderson Cancer Centre, Houston, TX 77030, USA
- The University of Texas Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Dung-Fang Lee
- Department of Developmental and Regenerative Biology, and the Black Family Stem Cell Institute, Mount Sinai School of Medicine, New York, NY 10029, USA
| | - Zhe Chang
- Department of Molecular and Cellular Oncology, The University of Texas M.D. Anderson Cancer Centre, Houston, TX 77030, USA
- The University of Texas Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Jin Li
- Center for Applied Genomics, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Bailu Peng
- Guangdong Entomological Institute, Guangzhou, Guangdong 510260, China
| | - Jason B. Fleming
- Department of Surgical Oncology, The University of Texas M.D. Anderson Cancer Centre, Houston, TX 77030, USA
| | - Huamin Wang
- Department of Pathology, The University of Texas M.D. Anderson Cancer Centre, Houston, TX 77030, USA
- The University of Texas Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Jinsong Liu
- Department of Pathology, The University of Texas M.D. Anderson Cancer Centre, Houston, TX 77030, USA
- The University of Texas Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Ihor R. Lemischka
- Department of Developmental and Regenerative Biology, and the Black Family Stem Cell Institute, Mount Sinai School of Medicine, New York, NY 10029, USA
| | - Mien-Chie Hung
- Department of Molecular and Cellular Oncology, The University of Texas M.D. Anderson Cancer Centre, Houston, TX 77030, USA
- The University of Texas Graduate School of Biomedical Sciences, Houston, TX 77030, USA
- Center for Molecular Medicine and Graduate Institute of Cancer Biology, China Medical University, Taichung 447, Taiwan
| | - Paul J. Chiao
- Department of Molecular and Cellular Oncology, The University of Texas M.D. Anderson Cancer Centre, Houston, TX 77030, USA
- The University of Texas Graduate School of Biomedical Sciences, Houston, TX 77030, USA
- Correspondence:
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Peng B, Zhu J, Zhang C. A New Approach To Specify the Inlet Boundary Conditions for Computational Fluid Dynamics (CFD) Modeling of Hydrodynamic Behavior of a Circulating Fluidized Bed (CFB) Riser. Ind Eng Chem Res 2011. [DOI: 10.1021/ie200916c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- B. Peng
- Department of Mechanical and Materials Engineering, and ‡Department of Chemical and Biochemical EngineeringThe University of Western Ontario, London, ON N6A 5B9, Canada
| | - J. Zhu
- Department of Mechanical and Materials Engineering, and ‡Department of Chemical and Biochemical EngineeringThe University of Western Ontario, London, ON N6A 5B9, Canada
| | - C. Zhang
- Department of Mechanical and Materials Engineering, and ‡Department of Chemical and Biochemical EngineeringThe University of Western Ontario, London, ON N6A 5B9, Canada
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