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Lim DK, Shen S, Jejah IA, Cullen JF. Unusual optic disc infarction in a case of arteritic anterior ischaemic optic neuropathy (AAION). Singapore Med J 2015; 56:e36-8. [PMID: 25820857 DOI: 10.11622/smedj.2015048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Herein, we report another case of arteritic anterior ischaemic optic neuropathy from Singapore, in which the initial optic disc swelling was extreme and the sequential disease resolved because the patient was already on maximum treatment. As the management of this biopsy-proven giant cell arteritis case was complicated by the presence of a number of other medical conditions, including end-stage renal failure, monitoring of the response to treatment proved problematic.
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Cai Y, Liu T, Fang F, Shen S, Xiong C. Involvement of ICAM-1 in impaired spermatogenesis after busulfan treatment in mice. Andrologia 2015; 48:37-44. [DOI: 10.1111/and.12414] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/05/2015] [Indexed: 01/14/2023] Open
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Shen S, Zhou Y, Xu Y, Zhang B, Duan X, Huang R, Li B, Shi Y, Shao Z, Liao H, Jiang J, Shen N, Zhang J, Yu C, Jiang H, Li S, Han S, Ma J, Sun Q. A multi-centre randomised trial comparing ultrasound vs mammography for screening breast cancer in high-risk Chinese women. Br J Cancer 2015; 112:998-1004. [PMID: 25668012 PMCID: PMC4366890 DOI: 10.1038/bjc.2015.33] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 01/09/2015] [Accepted: 01/12/2015] [Indexed: 11/24/2022] Open
Abstract
Background: Chinese women tend to have small and dense breasts and ultrasound is a common method for breast cancer screening in China. However, its efficacy and cost comparing with mammography has not been evaluated in randomised trials. Methods: At 14 breast centres across China during 2008–2010, 13 339 high-risk women aged 30–65 years were randomised to be screened by mammography alone, ultrasound alone, or by both methods at enrolment and 1-year follow-up. Results: A total of 12 519 and 8692 women underwent the initial and second screenings, respectively. Among the 30 cancers (of which 15 were stage 0/I) detected, 5 (0.72/1000) were in the mammography group, 11 (1.51/1000) in the ultrasound group, and 14 (2.02/1000) in the combined group (P=0.12). In the combined group, ultrasound detected all the 14 cancers, whereas mammography detected 8, making ultrasound more sensitive (100 vs 57.1%, P=0.04) with a better diagnostic accuracy (0.999 vs 0.766, P=0.01). There was no difference between mammography and ultrasound in specificity (100 vs 99.9%, P=0.51) and positive predictive value (72.7 vs 70.0% P=0.87). To detect one cancer, the costs of ultrasound, mammography, and combined modality were $7876, $45 253, and $21 599, respectively. Conclusions: Ultrasound is superior to mammography for breast cancer screening in high-risk Chinese women.
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Li Z, He M, Dong X, Lin H, Ge H, Shen S, Li J, Ye RD, Chen D. New erythromycin derivatives enhance β-lactam antibiotics against methicillin-resistant Staphylococcus aureus. Lett Appl Microbiol 2015; 60:352-8. [PMID: 25588530 DOI: 10.1111/lam.12378] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Revised: 12/03/2014] [Accepted: 12/03/2014] [Indexed: 11/26/2022]
Abstract
UNLABELLED Newly synthesized erythromycin derivatives were screened for synergy with oxacillin and other β-lactam antibiotics against methicillin-resistant Staphylococcus aureus (MRSA). MRSA ATCC43300 and some clinically isolated MRSA were used. Several erythromycin derivatives were found to possess high synergism with oxacillin against MRSA. The newly synthesized erythromycin derivatives were also tested for their inhibitory effects against MRSA, either separately or in combination with oxacillin, using serial broth dilution, disc diffusion, Etest strips, growth curves and time-kill curves. A representative derivative, SIPI-8294, could potentiate almost all β-lactam antibiotics tested against the model strain MRSA ATCC43300 from 4 to 128 times and had synergism with oxacillin against 12 of 16 clinical isolates of MRSA under one-fourth of the minimum inhibitory concentration (MIC) of the compounds. This is the first report on the synergistic activity of these new erythromycin derivatives. These findings provide a new choice for the treatment of infection caused by MRSA and lead us to further study the synergistic mechanism. SIGNIFICANCE AND IMPACT OF THE STUDY This study is the first report on the synergy of anti-MRSA between new erythromycin derivatives and β-lactam antibiotics in vitro. The results show that although the erythromycin derivatives have poor anti-MRSA effects alone, they possess high synergism with oxacillin against MRSA ATCC43300 and clinically isolated MRSA. These novel compounds can significantly reduce the dosage of β-lactam antibiotics against MRSA, while this synergistic effect is different from the combination of β-lactams and β-lactamase inhibitors. The research may provide a new choice for the treatment of infection caused by MRSA and be useful to the research and development of new combination of medicines.
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Loutfy MR, Antoniou T, Shen S, Diong C, Vlaicu M, Halpenny R, Kovacs C, Fletcher D, Raboud JM. Virologic and Immunologic Impact and Durability of Enfuvirtide-Based Antiretroviral Therapy in HIV-Infected Treatment-Experienced Patients in a Clinical Setting. HIV CLINICAL TRIALS 2015; 8:36-44. [PMID: 17434847 DOI: 10.1310/hct0801-36] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To evaluate the effectiveness and safety of enfuvirtide-based therapy in treatment-experienced patients in a clinical setting. METHOD Retrospective study of treatment-experienced patients receiving enfuvirtide-based therapy for a minimum of 2 months. Endpoints included virologic suppression, virologic rebound, immunologic response, and adverse events. RESULTS Sixty-four patients were eligible for inclusion in the analysis. Median baseline viral load and CD4+ count were 4.7 log10 copies/mL (interquartile range [IQR], 4.0-5.2) and 150 cells/mm3 (IQR, 60-250), respectively. At month 12, viral load declined by a median of 2.53 log10 copies/mL (IQR, 0.97-3.12). The unadjusted median time to virologic suppression was 7.7 months (95% CI 4.1-10.4 months). Baseline viral load and number of protease inhibitors in the current regimen were significantly associated with virologic suppression following multivariate analysis (hazard ratio [HR] 0.45, 95% CI 0.31-0.63, p < .0001, and HR 0.51, 95% CI 0.27-0.94, p = .03, respectively). Among the 42 patients who attained sustained virologic suppression, 10 experienced virologic rebound during a median follow-up of 13.3 months (IQR, 7.0-19.1). Injection site reactions were reported in 33 (52%) patients, resulting in treatment discontinuation in nine patients. CONCLUSION Enfuvirtide-based therapy provides durable antiretroviral activity for treatment-experienced patients in a clinical setting.
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Neofytos D, Kuhn B, Shen S, Hua Zhu X, Jungkind D, Flomenberg P. Emergence of Staphylococcal Cassette ChromosomemecType IV Methicillin-ResistantStaphylococcus aureusas a Cause of Ventilator-Associated Pneumonia. Infect Control Hosp Epidemiol 2015; 28:1206-9. [PMID: 17828701 DOI: 10.1086/520746] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2007] [Accepted: 05/14/2007] [Indexed: 11/03/2022]
Abstract
Staphylococcal cassette chromosomemec(SCCmec) type IV methicillin-resistantStaphylococcus aureus(MRSA) strains were identified in 8 (19.5%) of 41 consecutive patients with MRSA ventilator-associated pneumonia (VAP) in this retrospective, observational study. There were no significant differences in VAP severity and crude mortality rates between patients with SCCmectype II strains and patients with SCCmectype IV strains.
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Guo W, Zhang M, Guo Y, Shen S, Guo X, Dong Z. FBXO32, a new TGF-β/Smad signaling pathway target gene, is epigenetically inactivated in gastric cardia adenocarcinoma. Neoplasma 2015; 62:646-57. [PMID: 25997968 DOI: 10.4149/neo_2015_078] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
FBXO32 has recently been identified as a TGF-β/Smad signaling pathway target gene, involved in regulating cell survival and may be transcriptionally silenced by epigenetic mechanisms in some kind of carcinomas. The present study was to investigate the role and promoter methylation status of FBXO32 in gastric cardia adenocarcinoma (GCA), and determine the prognostic significance of FBXO32 in GCA. Bisulfite Conversion-Specific and Methylation-Specific PCR, real-time RT-PCR and immunohistochemical staining methods were used to detect the methylation status and expression of FBXO32 in GCA samples. The frequency of FBXO32 methylation in GCA tumor tissues (44.6%) was significantly higher than that in corresponding normal tissues (3.6%) and was associated with TNM stage, pathological differentiation, distant metastasis or recurrence and upper gastrointestinal cancers (UGIC) family history. Decreased mRNA and protein expression of FBXO32 was observed in GCA tumor tissues and was associated with FBXO32 promoter methylation status. A positive correlation between FBXO32 and p-Smad2/3, Smad4 protein expression was also found in clinical specimens. GCA patients in stage III and IV, with positive UGIC family history, and hypermethylation and down-expression of FBXO32 were most likely to develop metastatic disease and also showed the worse survival. In all, aberrant hypermethylation of FBXO32 may be one of the mechanisms that lead to loss or down expression of the gene in GCA, FBXO32 may be a functional tumor suppressor and reactivation of FBXO32 gene may has therapeutic potential and may be used as a prognostic marker for GCA patients.
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Zhang Q, Lin Y, Shen S, Xing Z, Ruan X. Simulation and Optimization on Cellulase Immobilization Using Response Surface Methodology. ACTA ACUST UNITED AC 2015. [DOI: 10.7763/ijesd.2015.v6.677] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Begum T, Khalil M, Rahman MM, Shen S, Sultana SZ, Mannan S, Ara ZG, Chowdhury AI, Haque MA, Ara A. The site of attachment of umbilical cord and branching pattern of umbilical arteries within the placenta. Mymensingh Med J 2014; 23:644-648. [PMID: 25481579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Placenta is the mirror of maternal and fetal status; it reflects the changes due to complication in pregnancy of mother. Numerous common and uncommon findings of the placenta, umbilical cord and membranes are associated with abnormal fetal development and perinatal morbidity. So, the examination of the placenta can yield information that may be important in the immediate and later management of mother and newborn. This information may also be essential for protecting the attending physician in the event of an adverse maternal or fetal outcome. This cross sectional descriptive study was carried out to determine the incidence of different types of placenta depending on attachment site and branching pattern of arteries of umbilical cord in Bangladeshi Women. To achieve this aim sixty placenta with umbilical cord were collected. Placenta was from 28 weeks to 42 weeks gestational age of normal pregnancy during normal labour at gynaecology and obstetric department of Mymensingh Medical College Hospital. After preservation in 10% formol saline, study was done in the Department of Anatomy of Mymensingh Medical College. In the present study, incidence of different types of placenta depending on attachment site of umbilical cord was 50% Central, 46% Paracentral and 18% Marginal in type. In this study it was also observed that 58% placenta were Disperse in type and 42% were Magistral in type depending on the distribution of umbilical arteries. Observed findings of this study were compared with those of Western and Bangladeshi researchers.
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Shen S, Benhabib S, Duan J, Keene K, Delossantos J, Meredith R. Variation in Boost Dose to Breast Cancer Tumor Bed in Deep Inspiration Breath-Hold Radiation Therapy Evaluated With Feedback-Guided CBCT. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Duan J, Shen S, Wu X, Huang M, Benhabib S, Cardan R, Popple R, Brezovich I. SU-E-T-417: A Method for Predicting and Correcting the Dosimetric Effect of a Radiotherapy Treatment Couch in Actual Treatment Position. Med Phys 2014. [DOI: 10.1118/1.4888750] [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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Benhabib S, Duan J, Wu X, Cardan R, Shen S, Huang M, Popple R, Brezovich I. SU-E-T-98: Dependence of Radiotherapy Couch Transmission Factors On Field Size and Couch-Isocenter Distance. Med Phys 2014. [DOI: 10.1118/1.4888428] [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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Popple R, Cardan R, Duan J, Wu X, Shen S, Brezovich I. SU-E-T-27: A Tool for Routine Quality Assurance of Radiotherapy Dose Calculation Software. Med Phys 2014. [DOI: 10.1118/1.4888357] [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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Brezovich I, Wu X, Duan J, Benhabib S, Huang M, Shen S, Cardan R, Popple R. WE-G-BRD-08: End-To-End Targeting Accuracy of the Gamma Knife for Trigeminal Neuralgia. Med Phys 2014. [DOI: 10.1118/1.4889492] [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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115
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Shen S, Kim R, Benhabib S, Araujo J, Burnett L, Duan J, Popple R, Wu X, Cardan R, Brezovich I. SU-E-T-507: Interfractional Variation of Fiducial Marker Position During HDR Brachytherapy with Cervical Interstitial Needle Template. Med Phys 2014. [DOI: 10.1118/1.4888840] [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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Brezovich I, Popple R, Duan J, Huang M, Benhabib S, Shen S, Cardan R, Wu X. SU-E-J-138: An IGRT QA Device for Measuring with Tenths-Millimeter Accuracy KV and MV Isocenter Congruence, Couch Travel and Laser Alignment of Accelerators Used for SRS and SBRT. Med Phys 2014. [DOI: 10.1118/1.4888191] [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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Wu X, Duan J, Popple R, Cardan R, Huang M, Benhabib S, Shen S, Brezovich I. SU-E-T-259: Particle Swarm Optimization in Radial Dose Function Fitting for a Novel Iodine-125 Seed. Med Phys 2014. [DOI: 10.1118/1.4888590] [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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Pei Z, Lang B, Fragoso YD, Shearer KD, Zhao L, Mccaffery PJA, Shen S, Ding YQ, McCaig CD, Collinson JM. The expression and roles of Nde1 and Ndel1 in the adult mammalian central nervous system. Neuroscience 2014; 271:119-36. [PMID: 24785679 PMCID: PMC4048543 DOI: 10.1016/j.neuroscience.2014.04.031] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 04/08/2014] [Accepted: 04/18/2014] [Indexed: 11/01/2022]
Abstract
Mental and neurological illnesses affect one in four people. While genetic linkage analyses have shown an association of nuclear distribution factor E (NDE1, or NudE) and its ohnolog NDE-like 1 (NDEL1, or Nudel) with mental disorders, the cellular mechanisms remain unclear. In the present study, we have demonstrated that Nde1 and Ndel1 are differentially localised in the subventricular zone (SVZ) of the forebrain and the subgranular zone (SGZ) of the hippocampus, two regions where neurogenesis actively occurs in the adult brain. Nde1, but not Ndel1, is localized to putative SVZ stem cells, and to actively dividing progenitors of the SGZ. The influence of these proteins on neural stem cell differentiation was investigated by overexpression in a hippocampal neural stem cell line, HCN-A94. Increasing Nde1 expression in this neural stem cell line led to increased neuronal differentiation while decreasing levels of astroglial differentiation. In primary cultured neurons and astrocytes, Nde1 and Ndel1 were found to have different but comparable subcellular localizations. In addition, we have shown for the first time that Nde1 is heterogeneously distributed in cortical astrocytes of human brains. Our data indicate that Nde1 and Ndel1 have distinct but overlapping distribution patterns in mouse brain and cultured nerve cells. They may function differently and therefore their dosage changes may contribute to some aspects of mental disorders.
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Dolnikov A, Xu N, Shen S, O'Brien T. Increasing stem cell dose promotes the longevity of the graft in mice transplanted with human cord blood stem cells. Cytotherapy 2014. [DOI: 10.1016/j.jcyt.2014.01.206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Berutti T, Williams R, Shen S, Taylor M, Grimes D. Prevalence of urease in Vibrio parahaemolyticus
from the Mississippi Sound. Lett Appl Microbiol 2014; 58:624-8. [DOI: 10.1111/lam.12237] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2013] [Revised: 02/11/2014] [Accepted: 02/12/2014] [Indexed: 11/28/2022]
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Wen X, Hu D, Cao B, Shen S, Tang X. Dynamics Change of Honghu Lake's Water Surface Area and Its Driving Force Analysis Based on Remote Sensing Technique and TOPMODEL model. ACTA ACUST UNITED AC 2014. [DOI: 10.1088/1755-1315/17/1/012130] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Dolnikov A, Xu N, Shen S, Song E, Holmes T, Klamer G, O'Brien TA. GSK-3β inhibition promotes early engraftment of ex vivo-expanded haematopoietic stem cells. Cell Prolif 2014; 47:113-23. [PMID: 24517125 DOI: 10.1111/cpr.12092] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Accepted: 11/02/2013] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVES Umbilical cord blood (UCB) is a source of stem cells used for allogeneic transplantation, in addition to bone marrow and peripheral blood. Limited numbers of stem cells in a single UCB unit is associated with slow haematopoietic recovery and high risk of graft failure, particularly in adult patients. UCB stem cells can be expanded ex vivo; however, rapid differentiation reduces their regenerative potential. We have recently shown that Wnt/β-catenin signalling is down-regulated in ex vivo-expanded stem cells; therefore, we propose that re-activation of Wnt signalling using GSK-3β inhibition may act to improve regenerative potential of these ex vivo-expanded stem cells. MATERIALS AND METHODS Immunocompromised mice were employed in transplantation studies to determine stem-cell engraftment. Flow cytometry was used to phenotype the engrafted human cells. Retroviral gene transfer was used to examine the role of Myc gene up-regulated by GSK-3β inhibition, in ex vivo-expanded stem cells. RESULTS Treatment with GSK-3β inhibitor, 6-bromoindirubin 3'-oxime (BIO) improved early human cell engraftment in the mice and elevated the numbers of myeloid progenitor cells in cytokine-stimulated culture. BIO up-regulated β-catenin and c-myc in ex vivo-expanded stem cells. Ectopic expression of Myc acted to increase clonogenic potential and to delay differentiation of haematopoietic progenitor cells, suggesting the potential mechanism to improve regenerative potential of ex vivo-expanded grafts. CONCLUSIONS Pharmacological inhibition of GSK-3β provided a novel approach to improve early engraftment of ex vivo-expanded haematopoietic progenitor cells.
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Wan D, Gu W, Xu G, Shen C, Ding D, Shen S, Wang S, Gong X, He S, Zhi Q. Effects of common polymorphisms rs2910164 in miR-146a and rs11614913 in miR-196a2 on susceptibility to colorectal cancer: a systematic review meta-analysis. Clin Transl Oncol 2014; 16:792-800. [PMID: 24399071 DOI: 10.1007/s12094-013-1150-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2013] [Accepted: 12/09/2013] [Indexed: 01/29/2023]
Abstract
PURPOSE Emerging evidence has shown that single nucleotide polymorphisms occurred in microRNAs may contribute to the development of colorectal cancer (CRC). rs2910164 in miR-146a and rs11614913 in miR-196a2 are suggested to be associated with the susceptibility to CRC, but individually published studies revealed inconclusive results. To systematically summarize the possible correlationship between these polymorphisms and CRC risk, we performed this meta-analysis. METHODS We retrieved the relevant articles of the associations between these two microRNA polymorphisms and susceptibility to CRC for the period up to July 1, 2013. A total of seven articles were identified with 2,143 cases and 2,457 controls for miR-146a rs2910164, 1,594 cases and 2,252 controls for miR-196a2 rs11614913. Odds ratio and 95 % confidence interval were calculated to investigate the strength of the association. RESULTS The pooled analysis showed that miR-146a rs2910164 did not reveal any correlation with CRC susceptibility. However, a decreased risk was observed between miR-196a2 rs11614913 and CRC in all genetic models. CONCLUSION Our current meta-analysis demonstrates that miR-196a2 rs11614913 most likely contributes to decreased risk of CRC, whereas miR-146a rs2910164 may not be associated with the susceptibility to CRC.
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Kelly JW, Shen S, Pan Y, Dowling J, McLean CA. Postexcisional melanocytic regrowth extending beyond the initial scar: a novel clinical sign of melanoma. Br J Dermatol 2013; 170:961-4. [PMID: 24328996 DOI: 10.1111/bjd.12780] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/07/2013] [Indexed: 12/01/2022]
Abstract
BACKGROUND Recurrent naevi are widely recognized to occur commonly following incomplete removal of melanocytic lesions. These lesions have been generally understood as representing benign imitators of melanoma. OBJECTIVES To provide a formal description of the clinical findings of postexcisional melanocytic regrowth. METHODS We examined all cases of recurrent pigmentation adjacent to scars from previous excisional biopsies of melanocytic naevi treated at a private dermatology practice from 1995 to 2012. RESULTS We report nine cases of recurrence of melanocytic lesions that were melanomas. The most suspicious clinical feature for melanoma in these cases was the growth of the lesion beyond the confines of the initial scar, into the surrounding normal skin. CONCLUSIONS This pattern of recurrence of a melanocytic lesion represents a little recognized and distinctive clinical presenting sign of melanoma.
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Liu C, Sun Z, Shen S, Lin L, Li T, Tian B, Hua Y. Identification and characterization of the geranylgeranyl diphosphate synthase in Deinococcus radiodurans. Lett Appl Microbiol 2013; 58:219-24. [PMID: 24151908 DOI: 10.1111/lam.12181] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 10/12/2013] [Accepted: 10/12/2013] [Indexed: 11/30/2022]
Abstract
UNLABELLED Deinococcus radiodurans strain R1 utilizes multiple antioxidants including a unique carotenoid, deinoxanthin, to fight again oxidative stress. Most of the enzymes involved in the deinoxanthin biosynthetic pathway have been identified. However, the enzyme catalysing the synthesis of geranylgeranyl diphosphate (GGPP), which is a precursor of carotenoid biosynthesis, has yet to be identified. Two putative isoprenyl diphosphate synthases (IPPS) homologues (DR1395 and DR932) were screened out by analysis of conserved amino acid regions, and their biochemical functions were investigated. Gene mutation, gene expression in Escherichia coli and analysis of carotenoid products were used to investigate the functions of these candidates. The results suggested that DR1395 encodes the protein for GGPP synthesis. Site-directed mutant analysis indicated that the amino acid composition of and around the first aspartate-rich motif is vital for GGPP synthase function. SIGNIFICANCE AND IMPACT OF THE STUDY Deinococcus radiodurans strain R1 produces a unique carotenoid product, deinoxanthin, as an antioxidant. In this study, DR1395 was identified as the gene encoding geranylgeranyl diphosphate synthase (GGPPS) for entrance to deinoxanthin biosynthesis in D. radiodurans. Moreover, site-directed mutagenesis studies on DR1395 identified the effect of amino acid composition of the aspartate-rich motif on the production of this carotenoid. This study demonstrated the entrance step in the deinoxanthin biosynthetic pathway. These results can be useful in genetic engineering strategies for deinoxanthin production including enhancement of GGPPS gene expression in D. radiodurans.
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Taylor R, Whitley A, Shen S, Burnett O, De Los Santos J, Kim R. High-Dose-Rate Interstitial Brachytherapy for Gynecologic Cancer: Differential Dose Tolerance Between Proximal and Distal Vagina. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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127
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Yang H, Zhang S, Luo J, Yang H, Shen S, Wang F. The applying of rapid prototyping technique in the mandible reconstruction. Int J Oral Maxillofac Surg 2013. [DOI: 10.1016/j.ijom.2013.07.299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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128
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Kim R, Whitley A, Dragovic A, Shen S. Image-Guided Brachytherapy for Cervical Cancer: 3-D Analysis of D2 cc and Anatomical Factors Affecting D2 cc in OARs. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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129
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Gvakharia M, Athayde Wirka K, Conaghan J, Ivani K, Chen A, Shen S. Using a novel time-lapse platform with automated image analysis can detect diverse abnormal cleavage patterns that are not recognized by traditional morphology and correlate with poor implantation. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.418] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Tejera A, Herrero J, Rubio I, Castello D, Pellicer A, Meseguer M, Iwata K, Yumoto K, Ueda M, Matoba Y, Kamada Y, Furuyama S, Mizoguchi C, Sargent HC, Kai Y, Tsuchie Y, Iba Y, Mio Y, Wirka KA, Suraj K, Conaghan J, Gvakharia M, Ivani K, Murugesan R, Chen AA, Shen S, Sundvall L, Ingerslev HJ, Knudsen UB, Kirkegaard K, Best L, Campbell A, Duffy S, Montgomery S, Fishel S, Montag M, Toth B, Weigert J, Strowitzki T, Kumtepe Y, Kahraman S, Cetinkaya M, Pirkevi C, Yelke H, Montag M. Session 57: Time lapse: the real revolution for ambryo assessment? Hum Reprod 2013. [DOI: 10.1093/humrep/det190] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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131
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Popple R, Wu X, Yuan Y, Cardan R, Duan J, Shen S, Brezovich I. SU-E-T-561: Small Target Dose Calculation Accuracy for Multiple-Target Single-Isocenter VMAT. Med Phys 2013. [DOI: 10.1118/1.4814990] [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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132
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Wu X, Popple R, Yuan Y, FIveash J, Shen S, Duan J, Cardan R, Brezovich I. SU-E-P-14: A Practical Approach of Small Field Dosimetry Measurement for Patient-Specific IMRT/SRS/SBRT. Med Phys 2013. [DOI: 10.1118/1.4814088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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133
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Shen S, Duan J, Keene K, Yuan Y, Klepczyk L, Meredith R. SU-E-J-128: Setup Variation in Deep Inspiration Breath-Hold for Radiotherapy of Breast Cancer Tumor Bed Assessed with RPM-Guided CBCT. Med Phys 2013. [DOI: 10.1118/1.4814340] [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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134
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Benhabib S, Kim R, Duan J, Burnett L, Popple R, Wu X, Cardan R, Brezovich I, Shen S. SU-E-T-344: Interfractional Needle Displacement During HDR Brachytherapy for Patients with Gynecological Cancer Using Interstitial Needle Template. Med Phys 2013. [DOI: 10.1118/1.4814778] [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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135
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Cardan R, Popple R, Wu X, Duan J, Shen S, Brezovich I. SU-E-T-227: Feasibility of Collision Avoidance Using In Room 3D Camera. Med Phys 2013. [DOI: 10.1118/1.4814662] [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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136
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Duan J, Shen S, Yuan Y, Wu X, Cardan R, Popple R, Brezovich I. SU-E-T-601: Optimal Beam Selection for Intensity Modulated Radiation Therapy: High Intensity Flattening-Filter Free Versus Conventional Flattened Beams. Med Phys 2013. [DOI: 10.1118/1.4815029] [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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137
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Yuan Y, Duan J, Klepczyk L, Meredith R, Wu X, Cardan R, Brezovich I, Shen S. SU-E-T-622: Feasibility of Partial Volumetric Modulated Arc Therapy for Boost Treatment of Breast Cancer. Med Phys 2013. [DOI: 10.1118/1.4815050] [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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138
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Dolnikov A, Holmes T, Xu N, Shen S, Klamer G, O'Brien T. Transient inhibition of GSK-3β promotes early and late engraftment of ex vivo expanded haematopoietic progenitor cells in immuno-compromised mice. Cytotherapy 2013. [DOI: 10.1016/j.jcyt.2013.01.081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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139
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Shen HJ, Shi H, Ma K, Xie M, Tang LL, Shen S, Li B, Wang XS, Jin Y. Polyelectrolyte capsules packaging BSA gels for pH-controlled drug loading and release and their antitumor activity. Acta Biomater 2013; 9:6123-33. [PMID: 23271041 DOI: 10.1016/j.actbio.2012.12.024] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Revised: 11/16/2012] [Accepted: 12/07/2012] [Indexed: 01/28/2023]
Abstract
Polyelectrolyte multilayer capsules, promising candidates for multifunctional drug delivery systems, have recently received increased interest. However, the low encapsulation efficiency of drugs and the lack of reports about animal experiments have greatly slowed down their development for drug delivery. Here, a polyelectrolyte multilayer capsule filled with bovine serum albumin gel (BSA-gel-capsule) was constructed by a layer-by-layer assembly technique and thermally induced gelation of BSA. Owing to the charge variability of BSA with change in pH, BSA-gel-capsules not only showed a pronounced accumulation effect of drugs into capsules, but also displayed excellent pH-controlled loading and release properties. Moreover, a remarkable targeting action to the lung was discovered after intravenous injection of fluorescein isothiocyanate (FITC)-labeled BSA-gel-capsules into mice. After treatment with doxorubicin-loaded BSA-gel-capsules, effective cytotoxicity against B16-F10 cells and inhibition of the pulmonary melanoma growth were revealed. This paper introduces a new type of smart microstructure with notable pH-responsive ability. This material renders feasible the intravenous administration of polyelectrolyte microcapsules, which will be a big step towards their application as drug delivery vehicles.
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140
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Dolnikov A, Shen S, Klamer G, Xu N, O'Brien T. GSK-3β inhibition promotes T cell reconstitution and preserves naïve T cell phenotype in mice transplanted with human haematopoietic stem cells. Cytotherapy 2013. [DOI: 10.1016/j.jcyt.2013.01.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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141
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Ross MI, Wu E, Wilkins JT, Gupta D, Shen S, Aulwes D, Montero K, Holly TA. Safety and feasibility of adjunctive regadenoson injection at peak exercise during exercise myocardial perfusion imaging: The Both Exercise and Regadenoson Stress Test (BERST) trial. J Nucl Cardiol 2013; 20:197-204. [PMID: 23404232 DOI: 10.1007/s12350-013-9679-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Accepted: 01/21/2013] [Indexed: 01/23/2023]
Abstract
BACKGROUND The data existing in the literature regarding the safety of using regadenoson with symptom-limited exercise are limited, which motivated the authors to undertake this randomized study. METHODS We offered patients scheduled to undergo vasodilator stress nuclear myocardial perfusion imaging the opportunity to exercise instead. Patients who failed to reach target heart rate (THR) were randomized to (1) receive regadenoson at peak exercise or (2) stop exercise and receive regadenoson at rest. Patients who reached THR received a standard Tc-99m sestamibi injection with no regadenoson. RESULTS 200 patients were included (66% male, mean age 52.5 ± 13.6). 125 patients (62%) reached THR with exercise alone. All stress protocols were well tolerated, and there were no significant adverse events. There were no statistically significant differences in the extent of perfusion abnormalities, image quality, or rate of referral to cardiac catheterization within 60 days between the groups. In fully adjusted logistic regression models, beta-blocker use and diabetes remained significant univariate predictors of failure to reach THR (OR 0.21, 95% CI 0.1-0.5, P < .0001, OR 0.34, 95% CI 0.2-0.7, P = .004, respectively). CONCLUSIONS A protocol combining regadenoson at peak exercise in patients unable to reach THR with exercise is feasible, well-tolerated, and yields comparable imaging results to a standard regadenoson injection at rest. In addition, pharmacologic stress testing may be over-ordered in current clinical practice, as patients referred for such testing were often able to exercise.
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142
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Thomason ME, Dassanayake MT, Shen S, Katkuri Y, Alexis M, Anderson AL, Yeo L, Mody S, Hernandez-Andrade E, Hassan SS, Studholme C, Jeong JW, Romero R. Cross-hemispheric functional connectivity in the human fetal brain. Sci Transl Med 2013; 5:173ra24. [PMID: 23427244 PMCID: PMC3618956 DOI: 10.1126/scitranslmed.3004978] [Citation(s) in RCA: 133] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Compelling evidence indicates that psychiatric and developmental disorders are generally caused by disruptions in the functional connectivity (FC) of brain networks. Events occurring during development, and in particular during fetal life, have been implicated in the genesis of such disorders. However, the developmental timetable for the emergence of neural FC during human fetal life is unknown. We present the results of resting-state functional magnetic resonance imaging performed in 25 healthy human fetuses in the second and third trimesters of pregnancy (24 to 38 weeks of gestation). We report the presence of bilateral fetal brain FC and regional and age-related variation in FC. Significant bilateral connectivity was evident in half of the 42 areas tested, and the strength of FC between homologous cortical brain regions increased with advancing gestational age. We also observed medial to lateral gradients in fetal functional brain connectivity. These findings improve understanding of human fetal central nervous system development and provide a basis for examining the role of insults during fetal life in the subsequent development of disorders in neural FC.
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143
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White CC, Crotwell DN, Shen S, Salyer J, Yung D, Zheng J, DiBlasi RM. Bronchodilator Delivery During Simulated Pediatric Noninvasive Ventilation. Respir Care 2013; 58:1459-66. [DOI: 10.4187/respcare.02171] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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144
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Wong C, Chen A, Behr B, Shen S. Time-lapse microscopy and image analysis in basic and clinical embryo development research. Reprod Biomed Online 2013; 26:120-9. [DOI: 10.1016/j.rbmo.2012.11.003] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Revised: 11/08/2012] [Accepted: 11/13/2012] [Indexed: 12/16/2022]
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145
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Shen S, Pyo CW, Vu Q, Wang R, Geraghty DE. The Essential Detail: The Genetics and Genomics of the Primate Immune Response. ILAR J 2013; 54:181-95. [DOI: 10.1093/ilar/ilt043] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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146
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Geronazzo-Alman L, Spratt A, Shen S, Guffanti G, Lord E, Duarte C, Musa G, Wicks J, Fan B, Hoven C. 2007 – An item response theory analysis of post-traumatic stress disorder symptoms measured with two instruments in 6,733 9/11-exposed youth. Eur Psychiatry 2013. [DOI: 10.1016/s0924-9338(13)76942-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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147
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Clark G, Shen S, Lopez-Araujo J, Coleman V, Kim R. A Dosimetric Comparison of Tandem and Mini-Ovoid Applicator Versus Vaginal Cylinder With Tandem in the 3-D HDR Era of Cervical Cancer Brachytherapy. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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148
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Shen S, Kim R, Whitley A, Dragovic A, Wu X. Interfractional Variation of Hot Spot Locations for Organs at Risk in High-dose-rate Brachytherapy for Cervical Cancer. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1175] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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149
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Nelson C, Kim S, Shen S, Shao Y, Mayer T, Moore D, Lu-Yao G. Certificate of Need (CON) Status and its Impact on Overtreatment of Low-risk Prostate Cancer in the Elderly. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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150
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Shen S, Sterr A, Szameitat A. A template effect study on voxel-based morphometry in statistic parametric mapping. CONFERENCE PROCEEDINGS : ... ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL CONFERENCE 2012; 2005:3051-4. [PMID: 17282887 DOI: 10.1109/iembs.2005.1617118] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Voxel-based morphometry (VBM) is an automated method allowing identification of anatomical differences in the whole brain without the pre-specification of a region of interests. Spatial normalization is one of the major processes in VBM, which transforms all images to a standard template. A variety of templates were employed in VBM researches in the literature, including the MNI template and study-specific templates. Few studies were presented to test the effect of templates on the detection accuracy of VBM, although it is claimed in many papers that the study-specific template performs better. However, the creation of the study-specific template differs on the subjects included. In this paper, the gray matter (GM) difference of two groups (female vs male) was analyzed to evaluate the effects of templates on the VBM results. The statistic parametric mapping (SPM) package, as the standard software for VBM implementation, was used for analyses.
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