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Keene KS, King T, Hwang ES, Peng B, McGuire K, Tapia C, Zhang H, Bae S, Nakhlis F, Klauber-Demore N, Meszoely I, Sabel MS, Willey SC, Eterovic KA, Hudis C, Wolff A, De Los Santos J, Thompson A, Mills GB, Meric-Bernstam F. Abstract P3-04-01: Molecular determinants of post-mastectomy breast cancer recurrence. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p3-04-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction
The management of breast cancer (BC) patients who undergo mastectomy in the setting of 1-3 positive lymph nodes has been controversial. This retrospective Translational Breast Cancer Research Consortium study evaluated the molecular aberrations associated with locoregional recurrence (LRR) or distant metastasis (DM) compared to controls in an effort to identify molecular predictors associated with recurrence.
Methods/Materials
We identified 115 HER2 negative, therapy naïve, T 1-3 and N 0-1 BC patients treated with mastectomy and no post mastectomy radiation therapy from 1997 to present with available FFPE tissue blocks. The cohort included 32 patients with LRR, 34 with DM, and 49 controls (without recurrence) who were matched for stage, grade, hormone receptor status, age ≤ or > 50, chemotherapy receipt, and margin status. Matched primary and recurrent LRR samples were available for 3 patients. Hybrid capture next generation sequencing (NGS) of 142 cancer related genes and RNAseq were performed to identify DNA/RNA alterations associated with LRR or DM. The frequency of common alterations on NGS was compared with Fisher's exact test. Expression of each gene from mRNA-Seq was treated as an explanatory variable. Immunohistochemistry (IHC) was performed for PTEN, Ki-67 and cleaved caspase 3 (CC3). PTEN loss and percentage of Ki-67 and CC3 positive cells were compared between groups with Fisher's exact test and nonparametric methods, respectively.
Results
RNAseq was performed on 115 patients; there was no difference in RNA expression levels between the groups. DNA analysis was performed on 57 patients (17 LRR, 15 DM and 25 controls), NF1 mutation rate was significantly elevated in both the LRR (24%) and DM (27%) samples compared to controls 0%; (p=0.0070). The mitogen activated protein kinase (MAPK) pathway was significantly mutated in both LRR (47%) and DM (40%) samples compared to the controls 0%; (p<0.0001). There was no significant difference in the rate of alterations of the PI3K/Akt/mTOR pathway among the three groups. Of three patients with matched primary vs LRR samples, one had concordant mutations. The second patient had additional mutations in the LRR, including gain of a NF1 mutation. The third patient had complete discordance of mutations identified in primary and LRR and had gain of HER2 amplification, suggestive of a new primary. There was no significant association between the groups and the loss of PTEN expression or CC3 expression. There was a significant difference between Ki 67 positive cells in patients with LRR (mean 29%), DM (mean 26%) versus controls (mean 14%, p= 0.0011). HR+ patients were significantly more likely to have a positive PTEN, lower Ki-67 and lower CC3 expression, p=0.0004, p<0.0001, and p<0.0001 respectively.
Conclusions
In this matched cohort analysis, mutations in the MAPK pathway, specifically NF1, were associated with both LRR and DM, suggesting that alterations in this pathway are associated with a more aggressive tumor phenotype. However, there were no molecular features that discriminated between those likely to recur locally alone versus distantly. Further study is needed to validate these findings, and to determine whether targeting alterations in this pathway could decrease the risk of recurrence.
Citation Format: Keene KS, King T, Hwang ES, Peng B, McGuire K, Tapia C, Zhang H, Bae S, Nakhlis F, Klauber-Demore N, Meszoely I, Sabel MS, Willey SC, Eterovic KA, Hudis C, Wolff A, De Los Santos J, Thompson A, Mills GB, Meric-Bernstam F. Molecular determinants of post-mastectomy breast cancer recurrence [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P3-04-01.
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Huang TR, Wang GC, Zhang HM, Peng B. Differential research of inflammatory and related mediators in BPH, histological prostatitis and PCa. Andrologia 2018; 50:e12974. [PMID: 29441606 DOI: 10.1111/and.12974] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/04/2017] [Indexed: 11/27/2022] Open
Abstract
Prostate cancer (PCa) is one of the most common male malignancies in the world. It was aimed to investigate differential expression of inflammatory and related factors in benign prostatic hyperplasia (BPH), prostate cancer (PCa), histological prostatitis (HP) and explore the role of Inducible nitric oxide synthase (iNOS), (VEGF) Vascular endothelial growth factor, androgen receptor (AR) and IL-2, IL-8 and TNF-α in the occurrence and development of prostate cancer. RT-PCR was used to detect the mRNA expression level of iNOS, VEGF, AR and IL-2, IL-8 and TNF-α in BPH, PCa and BPH+HP. Western blotting and immunohistochemical staining were used to detect the protein levels of various proteins in three diseases. The results showed the mRNA and protein levels of iNOS, VEGF and IL-2, IL-8 and TNF-α were significantly increased in PCa and BPH+HP groups compared with BPH group (p < .05), while the AR was significantly lower than those in PCa and BPH+HP groups (p < .05). There was no significant difference in the mRNA and protein levels of iNOS, VEGF, AR and IL-2, IL-8 and TNF-α between PCa and BPH+HP groups (p > .05). iNOS, VEGF, AR and IL-2, IL-8 and TNF-α are involved in the malignant transformation of prostate tissue and play an important role in the development and progression of Prostate cancer (PCa).
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Peng B, Yang L, Yang C, Pang X, Chen X, Wu Y. The effectiveness of anterior cervical decompression and fusion for the relief of dizziness in patients with cervical spondylosis: a multicentre prospective cohort study. Bone Joint J 2018; 100-B:81-87. [PMID: 29305455 DOI: 10.1302/0301-620x.100b1.bjj-2017-0650.r2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
AIMS Cervical spondylosis is often accompanied by dizziness. It has recently been shown that the ingrowth of Ruffini corpuscles into diseased cervical discs may be related to cervicogenic dizziness. In order to evaluate whether cervicogenic dizziness stems from the diseased cervical disc, we performed a prospective cohort study to assess the effectiveness of anterior cervical discectomy and fusion on the relief of dizziness. PATIENTS AND METHODS Of 145 patients with cervical spondylosis and dizziness, 116 underwent anterior cervical decompression and fusion and 29 underwent conservative treatment. All were followed up for one year. The primary outcomes were measures of the intensity and frequency of dizziness. Secondary outcomes were changes in the modified Japanese Orthopaedic Association (mJOA) score and a visual analogue scale score for neck pain. RESULTS There were significantly lower scores for the intensity and frequency of dizziness in the surgical group compared with the conservative group at different time points during the one-year follow-up period (p = 0.001). There was a significant improvement in mJOA scores in the surgical group. CONCLUSION This study indicates that anterior cervical surgery can relieve dizziness in patients with cervical spondylosis and that dizziness is an accompanying manifestation of cervical spondylosis. Cite this article: Bone Joint J 2018;100-B:81-7.
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Wei L, Liu M, Xiong H, Peng B. Up-regulation of IL-23 expression in human dental pulp fibroblasts by IL-17 via activation of the NF-κB and MAPK pathways. Int Endod J 2017; 51:622-631. [DOI: 10.1111/iej.12871] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 10/30/2017] [Indexed: 12/20/2022]
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Li X, Peng B, Zhu X, Wang P, Xiong Y, Liu H, Sun K, Wang H, Ou L, Wu Z, Liu X, He H, Mo S, Peng X, Tian Y, Zhang R, Yang L. Changes in related circular RNAs following ERβ knockdown and the relationship to rBMSC osteogenesis. Biochem Biophys Res Commun 2017; 493:100-107. [DOI: 10.1016/j.bbrc.2017.09.068] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 09/13/2017] [Indexed: 01/08/2023]
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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. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2017; 21:37-42. [PMID: 29165767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [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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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] [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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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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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. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2017; 88:093702. [PMID: 28964245 DOI: 10.1063/1.5000737] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [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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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] [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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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] [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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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] [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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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. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2017; 21:903-907. [PMID: 28338208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [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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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] [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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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] [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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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] [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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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Peng B, Muthukumar M. Modeling competitive substitution in a polyelectrolyte complex. J Chem Phys 2016; 143:243133. [PMID: 26723618 DOI: 10.1063/1.4936256] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
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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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] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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72
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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 06/29/2016] [Accepted: 07/19/2016] [Indexed: 12/22/2022]
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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 (MOSCOW) 2016; 80:1344-53. [PMID: 26567579 DOI: 10.1134/s0006297915100168] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [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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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Accepted: 05/17/2016] [Indexed: 11/29/2022]
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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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