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Wilson NM, Calabria C, Warren A, Finlay A, O'Donovan A, Passerello GL, Ribaric NL, Ward P, Gillespie R, Farrel R, McNarry AF, Pan D. Quantifying hospital environmental ventilation using carbon dioxide monitoring - a multicentre study. Anaesthesia 2024; 79:147-155. [PMID: 38059394 DOI: 10.1111/anae.16124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/17/2023] [Indexed: 12/08/2023]
Abstract
The COVID-19 pandemic has highlighted the importance of environmental ventilation in reducing airborne pathogen transmission. Carbon dioxide monitoring is recommended in the community to ensure adequate ventilation. Dynamic measurements of ventilation quantifying human exhaled waste gas accumulation are not conducted routinely in hospitals. Instead, environmental ventilation is allocated using static hourly air change rates. These vary according to the degree of perceived hazard, with the highest change rates reserved for locations where aerosol-generating procedures are performed, where medical/anaesthetic gases are used and where a small number of high-risk infective or immunocompromised patients may be isolated to reduce cross-infection. We aimed to quantify the quality and distribution of ventilation in hospital by measuring carbon dioxide levels in a two-phased prospective observational study. First, under controlled conditions, we validated our method and the relationship between human occupancy, ventilation and carbon dioxide levels using non-dispersive infrared carbon dioxide monitors. We then assessed ventilation quality in patient-occupied (clinical) and staff break and office (non-clinical) areas across two hospitals in Scotland. We selected acute medical and respiratory wards in which patients with COVID-19 are cared for routinely, as well as ICUs and operating theatres where aerosol-generating procedures are performed routinely. Between November and December 2022, 127,680 carbon dioxide measurements were obtained across 32 areas over 8 weeks. Carbon dioxide levels breached the 800 ppm threshold for 14% of the time in non-clinical areas vs. 7% in clinical areas (p < 0.001). In non-clinical areas, carbon dioxide levels were > 800 ppm for 20% of the time in both ICUs and wards, vs. 1% in operating theatres (p < 0.001). In clinical areas, carbon dioxide was > 800 ppm for 16% of the time in wards, vs. 0% in ICUs and operating theatres (p < 0.001). We conclude that staff break, office and clinical areas on acute medical and respiratory wards frequently had inadequate ventilation, potentially increasing the risks of airborne pathogen transmission to staff and patients. Conversely, ventilation was consistently high in the ICU and operating theatre clinical environments. Carbon dioxide monitoring could be used to measure and guide improvements in hospital ventilation.
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Affiliation(s)
- N M Wilson
- Department of Anaesthesia and Critical Care, Royal Infirmary of Edinburgh, Edinburgh, UK
- Usher Institute, University of Edinburgh, Edinburgh, UK
| | - C Calabria
- Department of Anaesthesia and Critical Care, Royal Infirmary of Edinburgh, Edinburgh, UK
| | - A Warren
- Department of Anaesthesia and Critical Care, Royal Infirmary of Edinburgh, Edinburgh, UK
| | - A Finlay
- Department of Anaesthesia and Critical Care, Victoria Hospital, Kirkcaldy, UK
| | - A O'Donovan
- Department of Process, Energy and Transport Engineering, MeSSO Research Group, Munster Technological University, Cork, Ireland
| | - G L Passerello
- Department of Anaesthesia and Critical Care, Victoria Hospital, Kirkcaldy, UK
| | - N L Ribaric
- Faculty of Medicine, University Medical Centre Hamburg-Eppendorf, University of Hamburg, Hamburg, Germany
| | - P Ward
- Department of Anaesthesia, St John's Hospital, Livingston, UK
| | - R Gillespie
- Department of Anaesthesia and Critical Care, Royal Infirmary of Edinburgh, Edinburgh, UK
| | - R Farrel
- Department of Anaesthesia and Critical Care, Victoria Hospital, Kirkcaldy, UK
| | - A F McNarry
- Department of Anaesthesia, Western General Hospital, UK
| | - D Pan
- Department of Respiratory Sciences, University of Leicester, Leicester, UK
- Department of Infectious Diseases and HIV Medicine, University Hospitals of Leicester NHS Trust, Leicester, UK
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Chang C, Zong M, Teng Y, Zeng X, Guo Y, Pan D, Zhang T, Wu Z. Preparation and characterisation of novel casein-gum Arabic composite microcapsules for targeted in vivo delivery of Lactiplantibacillus plantarum A3. Benef Microbes 2024; 15:51-66. [PMID: 38350470 DOI: 10.1163/18762891-20230065] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 11/08/2023] [Indexed: 02/15/2024]
Abstract
The health benefits of probiotics in the body are predicated on their ability to remain viable in harsh gastrointestinal conditions and complex pathological microenvironments. Casein and gum Arabic (GA), with dual emulsifying and stabilising effects in colloidal systems. Therefore, the objective of this research was to develop a novel microcapsule to encapsulate Lactiplantibacillus plantarum A3 using casein and GA as wall materials to improve the survival of the bacteria during gastrointestinal digestion, storage and lyophilization. The casein and GA composite microcapsules were prepared and characterised by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscopy (SEM). It was found that the microcapsules had stable morphology, uniform size and spherical shape. The results revealed that the encapsulation of microcapsules significantly improved the survival of L. plantarum A3 in gastrointestinal fluid environment (5.52 × 109 cfu/ml) and lyophilization treatment (6.25 × 109 cfu/ml). Furthermore, the microencapsulated L. plantarum A3 exhibited an improved ability to regulate intestinal microbiota by effectively increasing the relative abundance of Bacteroidetes, Proteobacteria and Actinobacteria and decreasing the relative abundance of Firmicutes in vivo. The findings of the study will help to design a lactic acid bacteria encapsulation system based on the gastrointestinal environment and provide a basis for the development of probiotic functional products.
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Affiliation(s)
- C Chang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, College of Food Science and Engineering, Ningbo University, Ningbo, Zhejiang, China P.R
| | - M Zong
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, College of Food Science and Engineering, Ningbo University, Ningbo, Zhejiang, China P.R
| | - Y Teng
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, College of Food Science and Engineering, Ningbo University, Ningbo, Zhejiang, China P.R
| | - X Zeng
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, College of Food Science and Engineering, Ningbo University, Ningbo, Zhejiang, China P.R
| | - Y Guo
- College of Food Science and Engineering, Ningbo University, Ningbo, Zhejiang, China P.R
| | - D Pan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, College of Food Science and Engineering, Ningbo University, Ningbo, Zhejiang, China P.R
| | - T Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, College of Food Science and Engineering, Ningbo University, Ningbo, Zhejiang, China P.R
| | - Z Wu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, College of Food Science and Engineering, Ningbo University, Ningbo, Zhejiang, China P.R
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Kong S, Zhu M, Pan D, Lane B, Smith RS, Roeder AHK. Tradeoff Between Speed and Robustness in Primordium Initiation Mediated by Auxin-CUC1 Interaction. bioRxiv 2023:2023.11.30.569401. [PMID: 38076982 PMCID: PMC10705432 DOI: 10.1101/2023.11.30.569401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/17/2023]
Abstract
Robustness is the reproducible development of a phenotype despite stochastic noise. It often involves tradeoffs with other performance metrics, but the mechanisms underlying such tradeoffs were largely unknown. An Arabidopsis flower robustly develops four sepals from four precisely positioned auxin maxima. The development related myb-like 1 (drmy1) mutant generates stochastic noise in auxin signaling that disrupts both the robust position and number of sepal primordia. Here, we found that increased expression of CUP-SHAPED COTYLEDON1 (CUC1), a boundary specification transcription factor, in the drmy1 mutant underlies this loss of robustness. CUC1 surrounds and amplifies stochastic auxin patches in drmy1 to form variably positioned auxin maxima and sepal primordia. Removing CUC1 from drmy1 provides time for the noise in auxin signaling to resolve into four precisely positioned auxin maxima, restoring robust sepal initiation. However, removing CUC1 decreases auxin maxima intensity and slows down sepal initiation. Thus, CUC1 increases morphogenesis speed but impairs robustness against auxin noise. Further, using a computational model, we found that the observed phenotype can be explained by the effect of CUC1 in repolarizing PIN FORMED1 (PIN1), a polar auxin transporter. Thus, our study illustrates a tradeoff between speed and robustness during development.
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Affiliation(s)
- Shuyao Kong
- Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, NY 14853, USA
- Section of Plant Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Mingyuan Zhu
- Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, NY 14853, USA
- Section of Plant Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
- Present address: Department of Biology, Duke University, Durham, NC 27708, USA
| | - David Pan
- Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, NY 14853, USA
- Section of Plant Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Brendan Lane
- Department of Computational and Systems Biology, John Innes Centre, Norwich NR4 7UH, UK
| | - Richard S. Smith
- Department of Computational and Systems Biology, John Innes Centre, Norwich NR4 7UH, UK
| | - Adrienne H. K. Roeder
- Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, NY 14853, USA
- Section of Plant Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
- Lead Contact
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Del Palacio A, Corallo B, Simoens M, Cea J, de Aurrecoechea I, Martinez I, Sanchez A, Stewart S, Pan D. Major Fusarium species and mycotoxins associated with freshly harvested maize grain in Uruguay. Mycotoxin Res 2023; 39:379-391. [PMID: 37442904 DOI: 10.1007/s12550-023-00498-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 05/22/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023]
Abstract
Fusarium species are common fungal pathogens of maize. Fusarium graminearum and Fusarium verticillioides, among others, can cause maize ear rot, and they are also mycotoxin producers. The aims of this work were to determine the frequency and diversity of Fusarium species in Uruguayan maize kernels, evaluate the toxigenic potential of the isolates, determine toxin contamination levels on freshly harvested grain, and assess the sensitivity of main Fusarium species against fungicides. Fusarium verticillioides was the most frequent species isolated, followed by Fusarium graminearum sensu stricto. Of F. verticillioides isolates studied for fumonisin production, 72% produced fumonisin B1 and 32% fumonisin B2. Considering in vitro toxin production by F. graminearum sensu stricto isolates, deoxynivalenol was the main toxin produced, followed by zearalenone and nivalenol. Fumonisins were the most frequently found toxins on freshly harvested maize samples (98% in 2018 and 86% in 2019), and also, fumonisin B1 was the toxin with highest concentration in both years studied (4860 µg/kg in 2018 and 1453 µg/kg in 2019). Deoxynivalenol and zearalenone were also found as contaminants. Metconazole and epoxiconazole were the most effective fungicides tested on F. verticillioides isolates. Fusarium graminearum sensu stricto isolates also were more sensitive to metconazole compared to other fungicides; nevertheless, epoxiconazole was less efficient in controlling this species. This is the first study that reports Fusarium species and mycotoxin contamination levels associated with maize grain in Uruguay. Its detection is the main step to develop management strategies in order to minimize fungal infection in maize crops.
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Affiliation(s)
- A Del Palacio
- Laboratorio de Micología, Facultad de Ciencias-Facultad de Ingeniería, UdelaR, 565, 11200, Montevideo, Julio Herreray Reissig , Uruguay
| | - B Corallo
- Laboratorio de Micología, Facultad de Ciencias-Facultad de Ingeniería, UdelaR, 565, 11200, Montevideo, Julio Herreray Reissig , Uruguay
| | - M Simoens
- Departamento de Análisis de Productos Agropecuarios, Laboratorio Tecnológico del Uruguay, Montevideo, Uruguay
| | - Jacqueline Cea
- Departamento de Análisis de Productos Agropecuarios, Laboratorio Tecnológico del Uruguay, Montevideo, Uruguay
| | - I de Aurrecoechea
- Departamento de Granos, Ministerio de Ganadería, Dirección General de Servicios Agrícolas, Agricultura y Pesca, Montevideo, Uruguay
| | - I Martinez
- Fundación del Laboratorio Tecnológico del Uruguay, Montevideo, Uruguay
| | - A Sanchez
- Fundación del Laboratorio Tecnológico del Uruguay, Montevideo, Uruguay
| | - S Stewart
- Programa Cultivos de Secano, Instituto Nacional de Investigación Agropecuaria, Estación Experimental La Estanzuela, Colonia, Uruguay
| | - D Pan
- Laboratorio de Micología, Facultad de Ciencias-Facultad de Ingeniería, UdelaR, 565, 11200, Montevideo, Julio Herreray Reissig , Uruguay.
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Song K, Elboudwarej E, Zhao X, Zhuo L, Pan D, Liu J, Brachmann C, Patterson SD, Yoon OK, Zavodovskaya M. RNA-seq RNAaccess identified as the preferred method for gene expression analysis of low quality FFPE samples. PLoS One 2023; 18:e0293400. [PMID: 37883360 PMCID: PMC10602291 DOI: 10.1371/journal.pone.0293400] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 10/11/2023] [Indexed: 10/28/2023] Open
Abstract
Clinical tumor tissues that are preserved as formalin-fixed paraffin-embedded (FFPE) samples result in extensive cross-linking, fragmentation, and chemical modification of RNA, posing significant challenges for RNA-seq-based gene expression profiling. This study sought to define an optimal RNA-seq protocol for FFPE samples. We employed a common RNA extraction method and then compared RNA-seq library preparation protocols including RNAaccess, RiboZero and PolyA in terms of sequencing quality and concordance of gene expression using FFPE and case-matched fresh-frozen (FF) triple-negative breast cancer (TNBC) tissues. We found that RNAaccess, a method based on exome capture, produced the most concordant results. Applying RNAaccess to FFPE gastric cancer tissues, we established a minimum RNA DV200 requirement of 10% and a RNA input amount of 10ng that generated highly reproducible gene expression data. Lastly, we demonstrated that RNAaccess and NanoString platforms produced highly concordant expression profiles from FFPE samples for shared genes; however, RNA-seq may be preferred for clinical biomarker discovery work because of the broader coverage of the transcriptome. Taken together, these results support the selection of RNA-seq RNAaccess method for gene expression profiling of FFPE samples. The minimum requirements for RNA quality and input established here may allow for inclusion of clinical FFPE samples of sub-optimal quality in gene expression analyses and ultimately increasing the statistical power of such analyses.
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Affiliation(s)
- Kai Song
- Gilead Sciences, Inc., Foster City, California, United States of America
| | - Emon Elboudwarej
- Gilead Sciences, Inc., Foster City, California, United States of America
| | - Xi Zhao
- Gilead Sciences, Inc., Foster City, California, United States of America
| | - Luting Zhuo
- Gilead Sciences, Inc., Foster City, California, United States of America
| | - David Pan
- Gilead Sciences, Inc., Foster City, California, United States of America
| | - Jinfeng Liu
- Gilead Sciences, Inc., Foster City, California, United States of America
| | - Carrie Brachmann
- Gilead Sciences, Inc., Foster City, California, United States of America
| | - Scott D. Patterson
- Gilead Sciences, Inc., Foster City, California, United States of America
| | - Oh Kyu Yoon
- Gilead Sciences, Inc., Foster City, California, United States of America
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Pan D, Yang SS, Meng FY, Mao P, Huang MK, Mu HM. [Multimodal imaging features of acute macular retinopathy in patients with COVID-19]. Zhonghua Yan Ke Za Zhi 2023; 59:557-565. [PMID: 37408427 DOI: 10.3760/cma.j.cn112142-20230109-00015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 07/07/2023]
Abstract
Objective: To investigate the multimodal imaging characteristics of acute macular retinopathy (AMR) and/or parafoveal acute middle maculopathy (PAMM) in patients with coronavirus disease 2019 (COVID-19). Methods: It was a cross-sectional study. Eight patients (15 eyes) diagnosed with AMN and/or PAMM, who presented for their initial visit at Kaifeng Eye Hospital between December 17 and December 31, 2022 and were also confirmed positive for COVID-19, were enrolled as the observation group. The patients were classified into four types based on swept-source optical coherence tomography (SS-OCT) findings. Fifteen healthy volunteers (15 eyes) without ocular or systemic diseases were recruited as the healthy control group, and one eye was randomly selected for analysis. All participants underwent detailed ophthalmic examinations, including best-corrected visual acuity (BCVA), slit-lamp biomicroscopy, fundus photography (FP), intraocular pressure measurement, fundus infrared imaging, OCT and OCT angiography (OCTA). The foveal avascular zone (FAZ) area of the macular center was measured. General information and multimodal imaging findings were collected and analyzed. The superficial capillary plexus vessel density (SCP-VD) and deep capillary plexus vessel density (DCP-VD) were measured in circular areas with diameters of 1.0 mm, >1.0 mm and ≤3.0 mm, and>3.0 mm and ≤6.0 mm centered on the foveal center, recorded as SCP-VD1.0, 3.0, 6.0 and DCP-VD1.0, 3.0, 6.0. Statistical analyses were performed using t-tests, Mann-Whitney U tests, and chi-square tests. Results: The observation group consisted of 6 males (11 eyes) and 2 females (4 eyes) with a mean age of (26.87±11.56) years. The healthy control group included 11 males (11 eyes) and 4 females (4 eyes) with a mean age of (28.75±12.30) years. There were no statistically significant differences in age and gender distribution between the two groups (all P>0.05). All patients in the observation group experienced high fever (≥39.0 ℃) and developed ocular symptoms during the febrile period or within 24 hours after fever resolution. Among all patients, there were 5 cases (7 eyes) of Type Ⅰ, 1 case (1 eye) of Type Ⅱ, 3 cases (4 eyes) of Type Ⅲ, and 2 cases (3 eyes) of Type Ⅳ. In Type Ⅲ and Ⅳ, 3 cases (4 eyes) exhibited weakly reflective cystic spaces in the outer plexiform or outer nuclear layers, and fundus photography revealed multiple gray or reddish-brown lesions in the macular region. One case (1 eye) showed retinal superficial hemorrhage. Cotton wool spots were observed in 2 cases (4 eyes). Fundus infrared imaging showed that Type Ⅰ manifested as weak reflectivity lesions in the parafoveal central zone, with the tip pointing towards the fovea. Type Ⅱ showed no apparent abnormalities in the macular region, while Type Ⅲ and Ⅳ displayed map-like weak reflective lesions spanning the foveal center. OCTA findings demonstrated that SCP-VD1.0 in the observation group was 6.93% (4.77%, 6.93%), significantly lower than the healthy control group's 10.66% (8.05%, 10.55%) (U=174.00, P=0.016). SCP-VD3.0 in the observation group was 37.14% (32.15%, 43.48%), also lower than the healthy control group's 43.06% (38.95%, 46.55%) (U=174.00, P=0.016). DCP-VD3.0 in the observation group was 48.20% (46.11%, 50.33%), lower than the healthy control group's 51.10% (50.04%, 53.02%) (U=188.00, P=0.009). DCP-VD6.0 in the observation group was 49.27% (47.26%, 51.67%), lower than the healthy control group's 52.43% (50.07%, 53.82%) (U=70.00, P=0.004). There were no significant differences in SCP-VD6.0 and DCP-VD1.0 between the two groups (both P>0.05). Conclusions: Acute macular retinopathy in patients with COVID-19 can involve all retinal layers and present as segmental hyper-reflectivity on SS-OCT. Fundus infrared imaging reveals weak reflectivity in the affected area, fundus photography shows multiple gray or reddish-brown lesions in the macular region, and OCTA demonstrates a decrease in SCP-VD and DCP-VD.
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Affiliation(s)
- D Pan
- Department of Ophthalmology, Kaifeng Central Hospital (Kaifeng Eye Hospital), Kaifeng 475001, China
| | - S S Yang
- Department of Ophthalmology, Kaifeng Central Hospital (Kaifeng Eye Hospital), Kaifeng 475001, China
| | - F Y Meng
- Department of Ophthalmology, Kaifeng Central Hospital (Kaifeng Eye Hospital), Kaifeng 475001, China
| | - P Mao
- Department of Ophthalmology, Kaifeng Central Hospital (Kaifeng Eye Hospital), Kaifeng 475001, China
| | - M K Huang
- Department of Ophthalmology, Kaifeng Central Hospital (Kaifeng Eye Hospital), Kaifeng 475001, China
| | - H M Mu
- Department of Ophthalmology, Kaifeng Central Hospital (Kaifeng Eye Hospital), Kaifeng 475001, China
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Kong S, Zhu M, Scarpin MR, Pan D, Jia L, Martinez RE, Alamos S, Vadde BVL, Garcia HG, Qian SB, Brunkard JO, Roeder AHK. DRMY1 promotes robust morphogenesis by sustaining translation of a hormone signaling protein. bioRxiv 2023:2023.04.07.536060. [PMID: 37066395 PMCID: PMC10104159 DOI: 10.1101/2023.04.07.536060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
Robustness is the invariant development of phenotype despite environmental changes and genetic perturbations. In the Arabidopsis flower bud, four sepals initiate at robust positions and times and grow to equal size to enclose and protect the inner floral organs. We previously characterized the mutant development related myb-like1 (drmy1), where 3-5 sepals initiate at irregular positions and variable times and grow to different sizes, compromising their protective function. The molecular mechanism underlying this loss of robustness was unclear. Here, we show that drmy1 has reduced TARGET OF RAPAMYCIN (TOR) activity, ribosomal content, and translation. Translation reduction decreases the protein level of ARABIDOPSIS RESPONSE REGULATOR7 (ARR7), a rapidly synthesized and degraded cytokinin signaling inhibitor. The resultant upregulation of cytokinin signaling disrupts the robust positioning of auxin signaling, causing variable sepal initiation. Our work shows that the homeostasis of translation, a ubiquitous cellular process, is crucial for the robust spatiotemporal patterning of organogenesis.
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Affiliation(s)
- Shuyao Kong
- Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, NY 14853, USA
- Section of Plant Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Mingyuan Zhu
- Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, NY 14853, USA
- Section of Plant Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
- Present address: Department of Biology, Duke University, Durham, NC 27708, USA
| | - M. Regina Scarpin
- Laboratory of Genetics, University of Wisconsin, Madison, WI 53706, USA
| | - David Pan
- Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, NY 14853, USA
- Section of Plant Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Longfei Jia
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA
| | - Ryan E. Martinez
- Laboratory of Genetics, University of Wisconsin, Madison, WI 53706, USA
| | - Simon Alamos
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Feedstocks Division, Joint BioEnergy Institute, Emeryville, CA 94608, USA
- Department of Plant and Microbial Biology, University of California at Berkeley, Berkeley, CA 94720, USA
| | - Batthula Vijaya Lakshmi Vadde
- Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, NY 14853, USA
- Section of Plant Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Hernan G. Garcia
- Biophysics Graduate Group, University of California at Berkeley, Berkeley, CA 94720, USA
- Department of Physics, University of California at Berkeley, Berkeley, CA 94720, USA
- Institute for Quantitative Biosciences-QB3, University of California at Berkeley, Berkeley, CA 94720, USA
- Department of Molecular and Cell Biology, University of California at Berkeley, Berkeley, CA 94720, USA
- Chan Zuckerberg Biohub-San Francisco, San Francisco, CA 94158, USA
| | - Shu-Bing Qian
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA
| | - Jacob O. Brunkard
- Laboratory of Genetics, University of Wisconsin, Madison, WI 53706, USA
| | - Adrienne H. K. Roeder
- Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, NY 14853, USA
- Section of Plant Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
- Lead Contact
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Williams J, Millan KM, Bolton D, Tan A, Cham CW, Pham T, Pan D, Liu M, Chan Y, Manohar P, Thomas J, Koufogiannis G, Ho H, Guerrieri M, Ng M, Boike T, Macleod C, Joon DL, Foroudi F, Chao M. Hyaluronic acid rectal spacer in EBRT: Usability, safety and symmetry related to user experience. J Med Imaging Radiat Sci 2022; 53:640-647. [PMID: 36202722 DOI: 10.1016/j.jmir.2022.09.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 09/02/2022] [Accepted: 09/13/2022] [Indexed: 11/11/2022]
Abstract
OBJECTIVES To report on the usability, safety, symmetry, and effectiveness of hyaluronic acid (HA) injected between the prostate and the rectum for patients undergoing treatment for prostate cancer with external beam radiotherapy (EBRT), and present a novel definition of rectal spacer symmetry that is reproducible and independent of patient anatomy. PATIENTS AND METHODS 102 consecutive patients with clinical stage of T1c-3b prostate cancer underwent general anaesthesia for fiducial marker insertion and injection of HA into the perirectal space before EBRT. HA safety, symmetry, separation, and usability based on user experience were assessed. RESULTS HA insertion was completed with a 100% success rate independent of user experience, rated as 'easy' or 'very easy' in all cases. There were no postoperative complications reported. The mean (SD) recto-prostatic separation for all patients at the base, midgland and apex were 12 (±2) mm, 11 (±2) mm, and 9 (±1) mm respectively. The mean sagittal length of the implant was 43 (±5) mm. The implant was rated as symmetrical in 98% of cases. The mean rV70Gy was 1.6% (IQR 0.8-3.3%) for patients receiving 78-80Gy. The mean rV53Gy was 2.8% (IQR 1.2-4.8%) for patients receiving 60-62Gy. The median prostate size was 43.5 cc (IQR 32-57). CONCLUSION Injection of HA was able to achieve highly symmetrical recto-prostatic separation, with new users able to produce excellent separation, particularly at the apex, achieving similar dosimetry outcomes as competent and experienced users. HA is safe, easy to use, and significantly reduced mean rV70Gy and rV53Gy compared to non-spacer patients.
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Affiliation(s)
- Jack Williams
- Albury Wodonga Health, 201 Borella Rd, Albury, NSW 2640, Australia; Genesis Care Victoria, 36 Mt Dandenong Rd, Ringwood East, VIC 3135, Australia
| | - Kevin Mc Millan
- Eastern Health, 5 Arnold Street, Box Hill, VIC 3128, Australia
| | - Damien Bolton
- Austin Health, 145 Studley Rd, Heidelberg, VIC 3084, Australia
| | - Alwin Tan
- The Bays Hospital, 262 Main St, Mornington, VIC 3931, Australia
| | - Chee Wee Cham
- The Bays Hospital, 262 Main St, Mornington, VIC 3931, Australia
| | - Trung Pham
- Monash Health, 246, Clayton Rd, Clayton, VIC 3168, Australia
| | - David Pan
- Monash Health, 246, Clayton Rd, Clayton, VIC 3168, Australia
| | - Madalena Liu
- Monash Health, 246, Clayton Rd, Clayton, VIC 3168, Australia
| | - Yee Chan
- Austin Health, 145 Studley Rd, Heidelberg, VIC 3084, Australia
| | - Paul Manohar
- Monash Health, 246, Clayton Rd, Clayton, VIC 3168, Australia
| | - Joe Thomas
- Eastern Health, 5 Arnold Street, Box Hill, VIC 3128, Australia
| | - George Koufogiannis
- Ringwood Private Hospital, 36 Mt Dandenong Rd, Ringwood East, VIC 3135, Australia
| | - Huong Ho
- Genesis Care Victoria, 36 Mt Dandenong Rd, Ringwood East, VIC 3135, Australia
| | - Mario Guerrieri
- Genesis Care Victoria, 36 Mt Dandenong Rd, Ringwood East, VIC 3135, Australia
| | - Michael Ng
- Genesis Care Victoria, 36 Mt Dandenong Rd, Ringwood East, VIC 3135, Australia
| | - Thomas Boike
- Genesis Care Victoria, 36 Mt Dandenong Rd, Ringwood East, VIC 3135, Australia; Michigan Health Professionals Radiation Oncology, 4550 Investment Dr, Suite B111, Troy, MI 8098, US
| | - Craig Macleod
- Genesis Care Victoria, 36 Mt Dandenong Rd, Ringwood East, VIC 3135, Australia
| | - Daryl Lim Joon
- Austin Health, 145 Studley Rd, Heidelberg, VIC 3084, Australia
| | - Farshad Foroudi
- Austin Health, 145 Studley Rd, Heidelberg, VIC 3084, Australia
| | - Michael Chao
- Austin Health, 145 Studley Rd, Heidelberg, VIC 3084, Australia; Ringwood Private Hospital, 36 Mt Dandenong Rd, Ringwood East, VIC 3135, Australia; Genesis Care Victoria, 36 Mt Dandenong Rd, Ringwood East, VIC 3135, Australia.
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Chao M, Chan Y, Pan D, Holt E, Tan A, McMillan K, Ho H, Pham T, Thomas J, Orio P, Cokelek M, Joon DL, Foroudi F, Bolton D. Can Perirectal Spacing Help Reduce GI Toxicity in Patients Undergoing Post-Prostatectomy Radiotherapy? Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1155] [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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Holt E, Chan Y, Tan A, Liu M, Ho H, Manohar P, Pan D, Cham C, McMillan K, Joon DL, Pham T, Foroudi F, Cokelek M, Bolton D, Ng M, Guerrieri M, Chao M. The Use of HA as Rectal Spacer in Prostate Cancer Patients Undergoing Hypofractionated RT: An Australian Experience. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1173] [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: 10/31/2022]
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Cui Y, Fan S, Pan D, Chao Q. [Atorvastatin inhibits malignant behaviors and induces apoptosis in human glioma cells by up-regulating miR-146a and inhibiting the PI3K/Akt signaling pathway]. Nan Fang Yi Ke Da Xue Xue Bao 2022; 42:899-904. [PMID: 35790441 DOI: 10.12122/j.issn.1673-4254.2022.06.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To explore the effect of atorvastatin (AVT) on biological behaviors and the miR-146a/PI3K/Akt signaling pathway in human glioma cells. METHODS Human glioma U251 cells were treated with 8.0 μmol/L AVT or transfected with a miR-146a inhibitor or a negative control fragment (miR-146a NC) prior to AVT treatment. RT-PCR was used to detect miR-146a expression in the cells, and the changes in cell proliferation rate, apoptosis, cell invasion and migration were detected using MTT assay, flow cytometry, and Transwell assay. Western blotting was performed to detect the changes in cellular expressions of proteins in the PI3K/Akt signaling pathway. RESULTS AVT treatment for 48 h resulted in significantly increased miR-146a expression and cell apoptosis (P < 0.01) and obviously lowered the cell proliferation rate, invasion index, migration index, and expressions of p-PI3K and p-Akt protein in U251 cells (P < 0.01). Compared with AVT treatment alone, transfection with miR-146a inhibitor prior to AVT treatment significantly reduced miR-146a expression and cell apoptosis (P < 0.01), increased the cell proliferation rate, promoted cell invasion and migration, and enhanced the expressions of p-PI3K and p-Akt proteins in the cells (P < 0.01); these effects were not observed following transfection with miR-146a NC group (P>0.05). CONCLUSION AVT can inhibit the proliferation, invasion and migration and promote apoptosis of human glioma cells possibly by up-regulating miR-146a expression and inhibiting the PI3K/Akt signaling pathway.
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Affiliation(s)
- Y Cui
- Department of Neurosurgery, Second Affiliated Hospital of Bengbu Medical College, Bengbu 233000, China
| | - S Fan
- Department of Neurosurgery, Second Affiliated Hospital of Bengbu Medical College, Bengbu 233000, China
| | - D Pan
- Department of Neurosurgery, Second Affiliated Hospital of Bengbu Medical College, Bengbu 233000, China
| | - Q Chao
- Department of Neurosurgery, Second Affiliated Hospital of Bengbu Medical College, Bengbu 233000, China
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Katayama K, Pan D, Oda M, Okubo T, Mori K. AB1335 BONE MARROW EDEMA SCORE IN HAND X-RAY FILM BY AI DEEP LEARNING ASSOCIATE WITH MRI BONE EDEMA IN RHEUMATOID ARTHRITIS. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundRapid radiographic progression (RRP) was reported to be one of clinical symptom in difficult to treat RA(D2T RA) (1). Eular recommendation for imaging showed BME is strong and independent prognostic factor for bone destruction(2). We reported bone marrow edema (BME) in MRI image was most associated with RRP compared with bone erosion, synovitis in Adalimumab add-on therapy in MTX-IR RA patients(3). To rescue RRP, early detection of BME is important although cost of MRI is expensive and hard to repeat.ObjectivesTo investigate the score of BME in hand X ray film by deep learning between X ray film and MRI BME information can discriminate the differences between BME and non-BME images.MethodsIn this work, we use a neural network consisted of convolutional layers and fully connected layers to classify X-ray images (Figure 1) In this paper, the output is the socre of BME which ranges from 0 to1(threshold = 0.4). We also used an interpretation technique called the Grad-CAM for visual explanations. Hand MRI (1.5T) were used.Figure 1.The convolutional neural network design. A red block “Conv” means a convolutional block. It contains a 2D convolution layer, a leaky relu activation function, a maxpooling layer and a batch normalization layer. The numbers above each “Conv” block are (kernal size, kernal size, kernal number). A green block “FC” is a fully connection layer. The number above it is (neuron number). After the last Softmax layer, the output becomes the probability of BME which ranges from 0 to 1.ResultsRegarding data split, 104 images including 79 non-BME images and 25 BME images are used as a hold-out test set. The rest of the images (473 images) are used as training data and validation data. Five fold cross-validation is used for these 473images. For each fold, there are about 378 images including 297 non-BME images and 81 BME images in the training set. There are about 95 images including 74 non-BME images and 21 BME images in the validation set. In order to fully utilize every image and unify the distribution of the training set and the validation set, the ratio of non-BME and BME is controlled to be the same which is about 3.66:1. The five folds showed similar performance on the hold-out test set. AUC is the area under the ROC curve. As the result, AUC which indicates the general performance of this model, ranged from 0.88 to 0.91. The average precision was 63% and the average recall rate was 87%. In this experiment, the initialization seed will greatly influence the final result. For example, AUC can be reduced to 0.73 from 0.89 because of a different initialization seed. It perhaps results from the shortage of data, which can easily make the neural network drop into a local minimum.We also utilized Grad-cam to visualize the result. The result of Grad-cam shows the importance of each part to the final prediction(Figure 2).Figure 2.Result of Grad-cam. Numbers in the parenthesises are the possibilities of BME. The middle case is unexpected because red region is the surrounding of the hand. The left and right cases may indicate the evidence for prediction.ConclusionThe preliminary result is much better than a random guess. According to this result, there should be a certain difference between BME and non-BME images. If it’s the characteristic of BME that domains this difference, our classification algorithm will be feasible for BME. Our future work is to justify the evidence of the predictions and improve performance.References[1]Nagy G et al. Eular definition of difficult- to - treat to rheumatoid arthritis. Ann Rheum Dis 2021;80:31-35[2]Colebatch AN et al. Eular recommendation for the use of imaging of joints in the clinical management of rheumatoid arthritis. Ann Rheum Dis 2013;72: 804-814[3]Katayama K et al. Bone marrow OEDEMA is more associated with rapid radiographic progression than in synovitis or bone erosion by using low field MRI in bio-naiive rheumatoid arthritis patients treated with adalimumab and methotrexate combination therapy. Ann Rheum Dis 2014, eular meeting SAT0100.Disclosure of InterestsNone declared
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Cuthbert JJ, Brown OI, Urbinati A, Pan D, Pellicori P, Dobbs K, Bulemfu J, Kazmi S, Sokoreli I, Pauws SC, Riistama JM, Cleland JGF, Clark AL. Hypochloraemia following admission to hospital with heart failure is common and associated with an increased risk of readmission or death: a report from OPERA-HF. Eur Heart J Acute Cardiovasc Care 2022; 11:43-52. [PMID: 34897402 DOI: 10.1093/ehjacc/zuab097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/19/2021] [Accepted: 10/11/2021] [Indexed: 06/14/2023]
Abstract
AIMS Hypochloraemia is common in patients hospitalized with heart failure (HF) and associated with a high risk of adverse outcomes during admission and following discharge. We assessed the significance of changes in serum chloride concentrations in relation to serum sodium and bicarbonate concentrations during admission in a cohort of 1002 consecutive patients admitted with HF and enrolled into an observational study based at a single tertiary centre in the UK. METHODS AND RESULTS Hypochloraemia (<96 mmol/L), hyponatraemia (<135 mmol/L), and metabolic alkalosis (bicarbonate >32 mmol/L) were defined by local laboratory reference ranges. Outcomes assessed were all-cause mortality, all-cause mortality or all-cause readmission, and all-cause mortality or HF readmission. Cox regression and Kaplan-Meier curves were used to investigate associations with outcome. During a median follow-up of 856 days (interquartile range 272-1416), discharge hypochloraemia, regardless of serum sodium, or bicarbonate levels was associated with greater all-cause mortality [hazard ratio (HR) 1.44, 95% confidence interval (CI) 1.15-1.79; P = 0.001], all-cause mortality or all-cause readmission (HR 1.26, 95% CI 1.04-1.53; P = 0.02), and all-cause mortality or HF readmission (HR 1.41, 95% CI 1.14-1.74; P = 0.002) after multivariable adjustment. Patients with concurrent hypochloraemia and natraemia had lower haemoglobin and haematocrit, suggesting congestion; those with hypochloraemia and normal sodium levels had more metabolic alkalosis, suggesting decongestion. CONCLUSION Hypochloraemia is common at discharge after a hospitalization for HF and is associated with worse outcome subsequently. It is an easily measured clinical variables that is associated with morbidity or mortality of any cause.
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Affiliation(s)
- J J Cuthbert
- Department of Cardiorespiratory Medicine, Centre for Clinical Sciences, Hull York Medical School, University of Hull, Kingston-Upon-Hull, East Riding of Yorkshire HU6 7RX, UK
- Department of Cardiology, Castle Hill Hospital, Hull University Teaching Hospitals Trust, Castle Road, Cottingham, Kingston-Upon-Hull, East Riding of Yorkshire HU3 2JZ, UK
| | - O I Brown
- Department of Cardiorespiratory Medicine, Centre for Clinical Sciences, Hull York Medical School, University of Hull, Kingston-Upon-Hull, East Riding of Yorkshire HU6 7RX, UK
- Department of Cardiology, Castle Hill Hospital, Hull University Teaching Hospitals Trust, Castle Road, Cottingham, Kingston-Upon-Hull, East Riding of Yorkshire HU3 2JZ, UK
| | - A Urbinati
- Department of Cardiorespiratory Medicine, Centre for Clinical Sciences, Hull York Medical School, University of Hull, Kingston-Upon-Hull, East Riding of Yorkshire HU6 7RX, UK
| | - D Pan
- Department of Cardiorespiratory Medicine, Centre for Clinical Sciences, Hull York Medical School, University of Hull, Kingston-Upon-Hull, East Riding of Yorkshire HU6 7RX, UK
| | - P Pellicori
- Robertson Centre for Biostatistics, Glasgow Clinical Trials Unit, University of Glasgow, Glasgow G12 8QQ, UK
| | - K Dobbs
- Department of Cardiorespiratory Medicine, Centre for Clinical Sciences, Hull York Medical School, University of Hull, Kingston-Upon-Hull, East Riding of Yorkshire HU6 7RX, UK
| | - J Bulemfu
- Department of Cardiorespiratory Medicine, Centre for Clinical Sciences, Hull York Medical School, University of Hull, Kingston-Upon-Hull, East Riding of Yorkshire HU6 7RX, UK
| | - S Kazmi
- Department of Cardiorespiratory Medicine, Centre for Clinical Sciences, Hull York Medical School, University of Hull, Kingston-Upon-Hull, East Riding of Yorkshire HU6 7RX, UK
| | - I Sokoreli
- Remote Patient Management & Chronic Care, Philips Research, Eindhoven 5656 AE, the Netherlands
| | - S C Pauws
- Remote Patient Management & Chronic Care, Philips Research, Eindhoven 5656 AE, the Netherlands
- Department of Communication and Cognition, Tilburg University, Tilburg 5037 AB, the Netherlands
| | - J M Riistama
- Philips Image Guided Therapy Devices, Best 1096 BC, The Netherlands
| | - J G F Cleland
- Robertson Centre for Biostatistics, Glasgow Clinical Trials Unit, University of Glasgow, Glasgow G12 8QQ, UK
| | - A L Clark
- Department of Cardiology, Castle Hill Hospital, Hull University Teaching Hospitals Trust, Castle Road, Cottingham, Kingston-Upon-Hull, East Riding of Yorkshire HU3 2JZ, UK
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Lawson CD, Hornigold K, Pan D, Niewczas I, Andrews S, Clark J, Welch HCE. Small-molecule inhibitors of P-Rex guanine-nucleotide exchange factors. Small GTPases 2022; 13:307-326. [PMID: 36342857 PMCID: PMC9645260 DOI: 10.1080/21541248.2022.2131313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
P-Rex1 and P-Rex2 are guanine-nucleotide exchange factors (GEFs) that activate Rac small GTPases in response to the stimulation of G protein-coupled receptors and phosphoinositide 3-kinase. P-Rex Rac-GEFs regulate the morphology, adhesion and migration of various cell types, as well as reactive oxygen species production and cell cycle progression. P-Rex Rac-GEFs also have pathogenic roles in the initiation, progression or metastasis of several types of cancer. With one exception, all P-Rex functions are known or assumed to be mediated through their catalytic Rac-GEF activity. Thus, inhibitors of P-Rex Rac-GEF activity would be valuable research tools. We have generated a panel of small-molecule P-Rex inhibitors that target the interface between the catalytic DH domain of P-Rex Rac-GEFs and Rac. Our best-characterized compound, P-Rex inhibitor 1 (PREX-in1), blocks the Rac-GEF activity of full-length P-Rex1 and P-Rex2, and of their isolated catalytic domains, in vitro at low-micromolar concentration, without affecting the activities of several other Rho-GEFs. PREX-in1 blocks the P-Rex1 dependent spreading of PDGF-stimulated endothelial cells and the production of reactive oxygen species in fMLP-stimulated mouse neutrophils. Structure-function analysis revealed critical structural elements of PREX-in1, allowing us to develop derivatives with increased efficacy, the best with an IC50 of 2 µM. In summary, we have developed PREX-in1 and derivative small-molecule compounds that will be useful laboratory research tools for the study of P-Rex function. These compounds may also be a good starting point for the future development of more sophisticated drug-like inhibitors aimed at targeting P-Rex Rac-GEFs in cancer.
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Affiliation(s)
- CD Lawson
- Signalling Programme, The Babraham Institute, Babraham Research Campus, CambridgeCB22 3AT, UK
| | - K Hornigold
- Signalling Programme, The Babraham Institute, Babraham Research Campus, CambridgeCB22 3AT, UK
| | - D Pan
- Signalling Programme, The Babraham Institute, Babraham Research Campus, CambridgeCB22 3AT, UK
| | - I Niewczas
- Biological Chemistry Facility, The Babraham Institute, Babraham Research Campus, CambridgeCB22 3AT, UK
| | - S Andrews
- Bioinformatics Facility, The Babraham Institute, Babraham Research Campus, CambridgeCB22 3AT, UK
| | - J Clark
- Biological Chemistry Facility, The Babraham Institute, Babraham Research Campus, CambridgeCB22 3AT, UK
| | - HCE Welch
- Signalling Programme, The Babraham Institute, Babraham Research Campus, CambridgeCB22 3AT, UK,CONTACT HCE Welch Signalling Programme, The Babraham Institute, Babraham Research Campus, CambridgeCB22 3ATUK
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Chen KH, Pan JF, Chen ZX, Pan D, Gao T, Huang M, Huang JN. Effects of hsa_circ_0000711 expression level on proliferation and apoptosis of hepatoma cells. Eur Rev Med Pharmacol Sci 2021; 24:4161-4171. [PMID: 32373952 DOI: 10.26355/eurrev_202004_20996] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate the role of human serum albumin (hsa)_circular (circ)_0000711 in hepatocellular carcinoma (HCC). Circular ribonucleic acids (circRNAs) are proven in numerous studies to play crucial role in tumor biology, but their roles in HCC remain unknown to a great extent. PATIENTS AND METHODS The circRNA expression profile microarray was employed to screen differentially expressed circRNAs in tumor tissues and adjacent tissues from HCC patients, and Reverse Transcription-quantitative Polymerase Chain Reaction (RT-qPCR) assay was performed for further verification. Next, the target micro RNAs (miRNAs) and their messenger RNAs (mRNAs) of key circRNAs were predicted by bioinformatics software, and a circRNA-miRNA-mRNA regulatory network was constructed. Subsequently, KEGG and GO enrichment analyses were applied to predict the possible biological processes regulated by hsa_circ_0000711 and relevant signaling pathways. The miRNAs playing a key role in the circRNA-miRNA-mRNA regulatory network were then selected as the objects, and their direct binding to hsa_circ_0000711 was confirmed via luciferase reporter gene assay. Thereafter, hsa_circ_0000711 was overexpressed or knocked out, and the biological function of hsa_circ_0000711 was detected by cell counting kit-8 (CCK-8) assay, apoptosis detection, and 5-Ethynyl-2'-deoxyuridine (EdU) staining assay in vitro. RESULTS The results of expression profile screening revealed that there was a significant difference in the expression profile of circRNAs between tumor tissues and adjacent tissues in HCC patients. Based on the circRNA expression profile and RT-qPCR results, the expression level of hsa_circ_0000711 was overtly reduced in HCC tissues. In addition, miR-103a-3p had the highest eigenvector centrality in the circRNA-miRNA-mRNA regulatory network, suggesting that miR-103a-3p is a vital participant in the pathological mechanism of hsa_circ_0000711. The KEGG enrichment analysis results pointed out that the target genes regulated by hsa_circ_0000711 were clearly enriched in the tumor-associated signaling pathways. Besides, the results of GO enrichment analysis demonstrated that the biological processes regulated by hsa_circ_0000711 were mainly related to cell cycle regulation, so cell proliferation might be affected. The results of luciferase reporter gene and RT-qPCR assays showed that hsa_circ_0000711 directly bound to has-miR-103a-3p to serve as a molecular sponge. The results of CCK-8 and EdU staining assays revealed that the proliferation of hepatoma cells in hsa_circ_0000711 overexpression group was evidently enhanced. In addition, it was further found via flow cytometry that the apoptosis rate of cells was significantly raised in hsa_circ_0000711 low-expression group and dramatically declined in hsa_circ_0000711 overexpression group. CONCLUSIONS Overexpression of hsa_circ_0000711 promoted the proliferation and inhibited the apoptosis of hepatoma cells via targeting has-miR-103a-3p.
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Affiliation(s)
- K-H Chen
- Department of Oncology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, China.
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Tao Z, Cao Z, Wang X, Pan D, Jia Q. Long noncoding RNA SNHG14 regulates ox-LDL-induced atherosclerosis cell proliferation and apoptosis by targeting miR-186-5p/WIPF2 axis. Hum Exp Toxicol 2021; 40:47-59. [PMID: 32735135 DOI: 10.1177/0960327120940363] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
To investigate the role of small nucleolus RNA host gene 14 (SNHG14) in the progression of atherosclerosis (AS), bioinformatics analysis, and other relevant experiments (cell counting kit-8, flow cytometry, quantitative real-time polymerase chain reaction, luciferase reporter, RNA immunoprecipitation, RNA pull-down, and western blot assays) were done. The current study revealed that SNHG14 level was high in the serum of AS patients and oxidized low-density lipoprotein (ox-LDL)-induced AS cell lines. Besides, we found that SNHG14 accelerated cell proliferation while inhibited cell apoptosis in ox-LDL-induced AS cell lines. Next, SNHG14 was confirmed to be a sponge for miR-186-5p in AS cells, and it was validated that SNHG14 regulated AS cell proliferation and apoptosis by sponging miR-186-5p. Moreover, we uncovered that WAS-interacting protein family member 2 (WIPF2) was a downstream target of miR-186-5p in AS cells. Finally, it was demonstrated that miR-186-5p modulated AS cell proliferation and apoptosis via targeting WIPF2. To conclude, our research disclosed that SNHG14 affected ox-LDL-induced AS cell proliferation and apoptosis through miR-186-5p/WIPF2 axis, which may provide a theoretical basis for the treatment and diagnosis of AS.
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Affiliation(s)
- Z Tao
- Department of Cardiology, 74734The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Z Cao
- Department of Cardiology, 74734The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - X Wang
- Department of Geriatrics, 74734The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - D Pan
- Department of Cardiology, 74734The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Q Jia
- Department of Cardiology, 74734The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
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Li LQ, Pan D, Zhang SW, -Y-Xie D, Zheng XL, Chen H. Autophagy regulates chemoresistance of gastric cancer stem cells via the Notch signaling pathway. Eur Rev Med Pharmacol Sci 2019; 22:3402-3407. [PMID: 29917191 DOI: 10.26355/eurrev_201806_15162] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
OBJECTIVE Gastric cancer is the most common gastrointestinal malignancy and the leading cause of cancer-related deaths in East Asia. Increasing evidence has revealed that autophagy is closely associated with tumor initiation and progression. The present work aimed to investigate the role of autophagy in adjuvant chemotherapy for gastric cancer. MATERIALS AND METHODS Gastric cancer stem cells (CSCs) were isolated from gastric cancer cell lines using the cell surface markers CD44 and CD54 and cultured in a three-dimensional cell culture system. Western blotting was used to detect their protein expression levels in gastric CSCs. In addition, the cells were treated with inhibitors to investigate the underlying mechanisms of autophagy. RESULTS After isolation of gastric CSCs expressing CD44 and CD54, Western blot analysis showed that the levels of the autophagic marker LC3II were markedly enhanced in CD44+CD54+ gastric CSCs. Moreover, the ratio of LC3II/LC3I protein levels was higher in CD44+CD54+ gastric CSCs than in non-CSCs. By contrast, both a chemotherapeutic agent (5-fluorouracil) and autophagy inhibitor (chloroquine) exhibited an inhibitory effect on the cell viability of gastric CSCs, and their combination further enhanced such inhibitory effects. Mechanistically, the addition of Notch inhibitor decreased the cell viability of gastric CSCs treated with 5-fluorouracil and chloroquine. In addition, 5-fluorouracil and chloroquine both increased the expression of Notch1 in gastric CSCs. CONCLUSIONS These findings show that autophagy regulated drug sensitivity of gastric cancer cells through the Notch signaling pathway.
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Affiliation(s)
- L-Q Li
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China.
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Li M, Liu Y, Xu Y, Li Y, Pan D, Wang L, Yan J, Wang X, Yang R, Yang M. Preliminary evaluation of GLP-1R PET in the diagnosis and risk stratification of pheochromocytomas. Neoplasma 2019; 67:27-36. [PMID: 31686522 DOI: 10.4149/neo_2019_190227n163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 05/22/2019] [Indexed: 11/08/2022]
Abstract
Noninvasive imaging methods for the diagnosis and risk stratification of pheochromocytomas (PHEOs) remain a great clinical challenge. The glucagon-like peptide-1 receptor (GLP-1R) has been validated to be overexpressed in PHEOs and therefore may be a reliable target for PHEOs. In this study, we firstly synthesized a novel radiotracer 68Ga-NOTA-MAL-Cys39-exendin-4 that specifically targets GLP-1R and evaluated the performance of GLP-1R PET for the diagnosis and risk stratification of PHEOs. Cys39-exendin-4 was conjugated to NOTA-MAL and then radiolabeled with 68Ga. The reaction was completed within 20 min with a yield of 91.6 ± 2.8%. In vitro cell uptake studies validated its high specificity. PET images showed promising tumor visualization with high uptake (1.88 ± 0.10 %ID/g for PC-12 poorly differentiated tumors and 1.09 ± 0.003 %ID/g for PC-12 highly differentiated tumors at 30min after injection). There was a significant difference in the uptake of 68Ga-NOTA-MAL-Cys39-exendin-4 between PC-12 poorly and highly differentiated tumors (p < 0.001), but no significant difference could be observed by 18F-FDG PET. Biodistribution results confirmed the findings of GLP-1R PET and demonstrated that 131I-MIBG couldn't be used for the risk stratification of PHEOs. Immunohistochemistry (IHC) staining revealed differences in GLP-1R expression between PC-12 poorly and highly differentiated tumor tissues. These results demonstrated that 68Ga-NOTA-MAL-Cys39-exendin-4 can specifically target GLP-1R with favorable pharmacokinetic properties. GLP-1R PET can be used for PHEOs detection and has potential for the risk stratification of PHEOs.
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Affiliation(s)
- M Li
- School of Pharmaceutical Science, Inner Mongolia Medical University, Hohhot, China
| | - Y Liu
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, China.,The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China
| | - Y Xu
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, China
| | - Y Li
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, China
| | - D Pan
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, China
| | - L Wang
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, China
| | - J Yan
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, China
| | - X Wang
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, China
| | - R Yang
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, China
| | - M Yang
- School of Pharmaceutical Science, Inner Mongolia Medical University, Hohhot, China.,Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, China.,The First School of Clinical Medicine, Nanjing Medical University, Nanjing, China
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Pan D, Feng D, Ding H, Zheng X, Ma Z, Yang B, Xie M. Effects of bisphenol A exposure on DNA integrity and protamination of mouse spermatozoa. Andrology 2019; 8:486-496. [PMID: 31489793 DOI: 10.1111/andr.12694] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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: 02/02/2019] [Revised: 07/04/2019] [Accepted: 07/16/2019] [Indexed: 01/18/2023]
Abstract
BACKGROUND Bisphenol A is widely used in the manufacture of polycarbonate plastics and has caused increasing concern over its potential adverse impacts on spermatogenesis. However, the effect of bisphenol A on spermiogenesis is yet to be explored. OBJECTIVES To evaluate whether bisphenol A has adverse effects on DNA integrity and protamination of spermatogenic cell. MATERIALS AND METHODS Newborn male mice were subcutaneously injected with bisphenol A (0.1, 5 mg/kg body weight, n = 15) or coin oil (control group, n = 20) daily from post-natal day 1 until 35. At post-natal day 70, epididymis caudal spermatozoa and testes were collected. Sperm count, sperm motility, and sperm morphology were analyzed. The sperm chromatin structure assay was performed to examine the sperm DNA fragmentation. Terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) method was used to assess apoptosis of spermatogenic cells. The ultrastructural features of testicular sections were examined under a transmission electron microscope. Western blot and RT-PCR were used to detect the expression levels of transition protein (Tnp) 1 and Tnp2, protamine (Prm) 1 and Prm2 protein, and mRNA in mice testes. RESULTS Bisphenol A significantly reduced sperm counts, impaired sperm motility, and increased the percentage of malformed spermatozoa. Poor sperm chromatin integrity and increased TUNEL-positive spermatogenic cells were also observed in mice exposed to bisphenol A. Ultrastructural analysis of testes showed that bisphenol A exposure caused incomplete chromatin condensation, retention of residual cytoplasm, and abnormal acrosome formation. In addition, the relative expression levels of Tnp2 and Prm2 in mice testes decreased significantly in bisphenol A groups. DISCUSSION AND CONCLUSION Our findings identified that neonatal bisphenol A exposure may negatively contribute to the sperm quality in adult mice. Mechanistically, we showed that bisphenol A reduced sperm chromatin integrity along with increased DNA damage, which may be due to poor protamination of spermatozoa.
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Affiliation(s)
- D Pan
- School of Bioscience and Technology, Weifang Medical University, Weifang, China.,State Key Laboratory of Molecular Biology, Shanghai Key Laboratory of Molecular Andrology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Shanghai, China
| | - D Feng
- Department of Obstetrics, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - H Ding
- School of Bioscience and Technology, Weifang Medical University, Weifang, China
| | - X Zheng
- School of Bioscience and Technology, Weifang Medical University, Weifang, China
| | - Z Ma
- School of Bioscience and Technology, Weifang Medical University, Weifang, China
| | - B Yang
- School of Bioscience and Technology, Weifang Medical University, Weifang, China
| | - M Xie
- School of Bioscience and Technology, Weifang Medical University, Weifang, China
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20
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Liu Y, Sheng J, Dong Z, Xu Y, Huang Q, Pan D, Wang L, Yang M. The diagnostic performance of 18F-fluoride PET/CT in bone metastases detection: a meta-analysis. Clin Radiol 2019; 74:196-206. [DOI: 10.1016/j.crad.2018.12.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 12/11/2018] [Indexed: 10/27/2022]
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21
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Khan MS, Dighe K, Wang Z, Srivastava I, Daza E, Schwartz-Dual AS, Ghannam J, Misra SK, Pan D. Detection of prostate specific antigen (PSA) in human saliva using an ultra-sensitive nanocomposite of graphene nanoplatelets with diblock-co-polymers and Au electrodes. Analyst 2019; 143:1094-1103. [PMID: 29387841 DOI: 10.1039/c7an01932g] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Prostate-specific antigen (PSA) is a commonly used biomarker for the detection of prostate cancer (PCa) and there are numerous data available for its invasive detection in the serum and whole blood. In this work, an electrochemical sensing method was devised to detect traces of PSA in human saliva using a hybrid nanocomposite of graphene nanoplatelets with diblock co-polymers and Au electrodes (GRP-PS67-b-PAA27-Au). The pure graphitic composition on filter paper provides significantly high electrical and thermal conductivity while PS67-b-PAA27 makes an amphiphilic bridge between GRP units. The sensor utilizes the binding of an anti-PSA antibody with an antigen-PSA to act as a resistor in a circuit providing an impedance change that in turn allows for the detection and quantification of PSA in saliva samples. A miniaturized electrical impedance analyzer was interfaced with a sensor chip and the data were recorded in real-time using a Bluetooth-enabled module. This fully integrated and optimized sensing device exhibited a wide PSA range of detection from 0.1 pg mL-1 to 100 ng mL-1 (R2 = 0.963) with a lower limit of detection of 40 fg mL-1. The performance of the biosensor chip was validated with an enzyme-linked immunosorbent assay technique with a regression coefficient as high as 0.940. The advantages of the newly developed saliva-PSA electrical biosensor over previously reported serum-PSA electrochemical biosensors include a faster response time (3-5 min) to achieve a stable electrical signal for PSA detection, high selectivity, improved sensitivity, no additional requirement of a redox electrolyte for electron exchange and excellent shelf life. The presented sensor is aimed for clinical commercialization to detect PSA in human saliva.
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Affiliation(s)
- M S Khan
- Bioengineering Department, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
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Abstract
Human and animal studies have confirmed that inhalation of particles from ambient air or occupational settings not only causes pathophysiological changes in the respiratory system, but causes cardiovascular effects as well. At an equal mass lung burden, nanoparticles are more potent in causing systemic microvascular dysfunction than fine particles of similar composition. Thus, accumulated evidence from animal studies has led to heightened concerns about the potential short- and long-term deleterious effects of inhalation of engineered nanoparticles on the cardiovascular system. This review highlights the new observations from animal studies, which document the adverse effects of pulmonary exposure to engineered nanoparticles on the cardiovascular system and elucidate the potential mechanisms involved in regulation of cardiovascular function, in particular, how the neuronal system plays a role and reacts to pulmonary nanoparticle exposure based on both in vivo and in vitro studies. In addition, this review also discusses the possible influence of altered autonomic nervous activity on preexisting cardiovascular conditions. Whether engineered nanoparticle exposure serves as a risk factor in the development of cardiovascular diseases warrants further investigation.
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Affiliation(s)
- H Kan
- a Health Effects Laboratory Division , National Institute for Occupational Safety and Health , Morgantown , WV , USA.,b Department of Pharmaceutical Sciences , West Virginia University , Morgantown , WV , USA
| | - D Pan
- a Health Effects Laboratory Division , National Institute for Occupational Safety and Health , Morgantown , WV , USA
| | - V Castranova
- b Department of Pharmaceutical Sciences , West Virginia University , Morgantown , WV , USA
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23
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Stacey G, Andrews P, Asante C, Barbaric I, Barry J, Bisset L, Braybrook J, Buckle R, Chandra A, Coffey P, Crouch S, Driver P, Evans A, Gardner J, Ginty P, Goldring C, Hay DC, Healy L, Hows A, Hutchinson C, Jesson H, Kalber T, Kimber S, Leathers R, Moyle S, Murray T, Neale M, Pan D, Park BK, Rebolledo RE, Rees I, Rivolta MN, Ritchie A, Roos EJ, Saeb-Parsy K, Schröder B, Sebastian S, Thomas A, Thomas RJ, Turner M, Vallier L, Vitillo L, Webster A, Williams D. Science-based assessment of source materials for cell-based medicines: report of a stakeholders workshop. Regen Med 2018; 13:935-944. [PMID: 30488776 DOI: 10.2217/rme-2018-0120] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Human pluripotent stem cells (hPSCs) have the potential to transform medicine. However, hurdles remain to ensure safety for such cellular products. Science-based understanding of the requirements for source materials is required as are appropriate materials. Leaders in hPSC biology, clinical translation, biomanufacturing and regulatory issues were brought together to define requirements for source materials for the production of hPSC-derived therapies and to identify other key issues for the safety of cell therapy products. While the focus of this meeting was on hPSC-derived cell therapies, many of the issues are generic to all cell-based medicines. The intent of this report is to summarize the key issues discussed and record the consensus reached on each of these by the expert delegates.
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Affiliation(s)
- Glyn Stacey
- International Stem Cell Banking Initiative, 2 High Street, Barley, Hertfordshire, SG8 8HZ, UK
| | - Peter Andrews
- Department of Biomedical Sciences, Centre for Stem Cell Biology, University of Sheffield, Sheffield, South Yourkshire, S10 2TN, UK
| | - Curtis Asante
- Centre for Stem Cells & Regenerative Medicine, King's College London, Guy's Campus, London, SE1 9RT, UK
| | - Ivana Barbaric
- Department of Biomedical Sciences, Centre for Stem Cell Biology, University of Sheffield, Sheffield, South Yourkshire, S10 2TN, UK
| | | | - Louise Bisset
- Medicines & Healthcare Products Regulatory Agency, London, E14 4PU, UK
| | - Julian Braybrook
- LGC Ltd, National Measurement Laboratory, Teddington, TW11 0LY, UK
| | | | | | - Peter Coffey
- University of California, Neuroscience Research Institue, Santa Barbara, CA, 93106, USA
- Institute of Opthalmology, University College London, London, WC1E 6BT, UK
| | - Sharon Crouch
- Financial & Business Services, University of Nottingham, Nottingham, NG7 2RD, UK
| | | | - Amanda Evans
- University of Cambridge/NHS Blood & Transplant, Long Road, CB2 0PT, Cambridge, UK
| | - John Gardner
- School of Social Sciences, Monash University, Victoria, Australia
| | - Patrick Ginty
- Regulatory Affairs, Cell and Gene Therapy Catapult, London, SE1 9RT, UK
| | - Christopher Goldring
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool, L69 3GE, UK
| | - David C Hay
- University of Edinburgh, MRC Centre for Regenerative Medicine, Edinburgh, EH16 4UU, UK
| | - Lyn Healy
- Francis Crick Institute, London, NW1 1AT, UK
| | - Anna Hows
- Miltenyi Biotec, Bisley, GU24 9DR, UK
| | - Claire Hutchinson
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool, L69 3GE, UK
| | - Helen Jesson
- Centre for Biological Engineering, Loughborough University, Loughborough, LE11 3TU, UK
| | - Tammy Kalber
- Centre for Advanced Biomedical Imaging, University College London, WC1E 6BT, UK
| | - Sue Kimber
- Division of Cell Matrix Biology and Regenerative Medicine; Director EPSRC/MRC in Regenerative Medicine, Faculty of Biology, Medicine, and Health, University of Manchester, Manchester, M13 9PT, UK
| | | | - Sarah Moyle
- Clinical Biomanufacturing Facility, Oxford University, Oxford, OX3 7JT, UK
| | - Trish Murray
- Department of Physiology, University of Liverpool, Liverpool, L69 3GE, UK
| | - Michael Neale
- Institute of Opthalmology, University College London, London, WC1E 6BT, UK
| | - David Pan
- Medical Research Council, London, WC2B 4AN, UK
| | - B Kevin Park
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool, L69 3GE, UK
| | | | - Ian Rees
- Medicines & Healthcare Products Regulatory Agency, London, E14 4PU, UK
| | - Marcelo N Rivolta
- Department of Biomedical Sciences, Centre for Stem Cell Biology, University of Sheffield, Sheffield, South Yourkshire, S10 2TN, UK
| | - Allan Ritchie
- Allan Ritchie Medical Device Consulting, Harrogate, HG1 1BX, UK
| | | | - Kourosh Saeb-Parsy
- Department of Surgery, University fo Cambridge, Cambridge Biomedical Campus, Cambridge, CB2 0QQ, UK
| | - Bernd Schröder
- Miltenyi Biotec GmbH, 51429 Bergisch Gladbach, Nordrhein-Westfalen, Germany
| | - Sujith Sebastian
- School of Bioscience, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK
| | - Angela Thomas
- College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh, EH16 4TJ, UK
| | - Robert J Thomas
- Centre for Biological Engineering, Loughborough University, Loughborough, LE11 3TU, UK
| | - Marc Turner
- Scottish National Blood Transfusion Service, Edinburgh, EH14 4BE, UK
| | - Ludovic Vallier
- Wellcome-Medical Research Council Cambridge Stem Cell Institute and Department of Surgery, University of Cambridge, Cambridge UK
| | - Loriana Vitillo
- Institute of Opthalmology, University College London, London, WC1E 6BT, UK
| | - Andrew Webster
- SATSU, Department of Sociology, University of York, York, YO10 5DD, UK
| | - David Williams
- Centre for Biological Engineering, Loughborough University, Loughborough, LE11 3TU, UK
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Zhang J, Pellicori P, Pan D, Dierckx R, Clark A, Cleland J. Dynamic risk stratification using serial measurements of plasma concentrations of natriuretic peptides in patients with heart failure. Int J Cardiol 2018; 269:196-200. [DOI: 10.1016/j.ijcard.2018.06.070] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 06/16/2018] [Accepted: 06/18/2018] [Indexed: 10/28/2022]
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Pan D, Pellicori P, Urbinati A, Sze S, Clark AL. P2281Relationship of the chest x-ray and outcome in patients with hospitalised heart failure. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- D Pan
- Castle Hill Hospital, Academic Cardiology, Hull, United Kingdom
| | - P Pellicori
- Castle Hill Hospital, Academic Cardiology, Hull, United Kingdom
| | - A Urbinati
- Castle Hill Hospital, Academic Cardiology, Hull, United Kingdom
| | - S Sze
- Castle Hill Hospital, Academic Cardiology, Hull, United Kingdom
| | - A L Clark
- Castle Hill Hospital, Academic Cardiology, Hull, United Kingdom
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Heuer V, Inagaki F, Morono Y, Kubo Y, Maeda L, Bowden S, Cramm M, Henkel S, Hirose T, Homola K, Hoshino T, Ijiri A, Imachi H, Kamiya N, Kaneko M, Lagostina L, Manners H, McClelland HL, Metcalfe K, Okutsu N, Pan D, Raudsepp M, Sauvage J, Schubotz F, Spivack A, Tonai S, Treude T, Tsang MY, Viehweger B, Wang D, Whitaker E, Yamamoto Y, Yang K. Expedition 370 summary. Proceedings of the International Ocean Discovery Program 2017. [DOI: 10.14379/iodp.proc.370.101.2017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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Jackson C, Stagg HR, Doshi A, Pan D, Sinha A, Batra R, Batra S, Abubakar I, Lipman M. Tuberculosis treatment outcomes among disadvantaged patients in India. Public Health Action 2017; 7:134-140. [PMID: 28695087 PMCID: PMC5493095 DOI: 10.5588/pha.16.0107] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 02/09/2017] [Indexed: 11/10/2022] Open
Abstract
Setting: Urban slums and poor rural areas in India, 2012-2014. Objective: To describe the characteristics of tuberculosis (TB) patients enrolled in treatment through Operation ASHA, a non-governmental organisation serving disadvantaged populations in India, and to identify risk factors for unfavourable treatment outcomes. Design: This was a retrospective cohort study. Patient characteristics were assessed for their relationship with treatment outcomes using mixed effects logistic regression, adjusting for clustering by treatment centre and Indian state. Outcomes were considered favourable (cured/treatment completed) or unfavourable (treatment failure, loss to follow-up, death, switch to multidrug-resistant TB treatment, transfer out). Results: Of 8415 patients, 7148 (84.9%) had a favourable outcome. On multivariable analysis, unfavourable outcomes were more common among men (OR 1.31, 95%CI 1.15-1.51), older patients (OR 1.12, 95%CI 1.04-1.21) and previously treated patients (OR 2.05, 95%CI 1.79-2.36). Compared to pulmonary smear-negative patients, those with extra-pulmonary disease were less likely to have unfavourable outcomes (OR 0.72, 95%CI 0.60-0.87), while smear-positive pulmonary patients were more likely to have unfavourable outcomes (OR 1.38, 95%CI 1.15-1.66 for low [scanty/1+] and OR 1.71, 95%CI 1.44-2.04 for high [2+/3+] positive smears). Conclusion: The treatment success rate within Operation ASHA is comparable to that reported nationally for India. Men, older patients, retreatment cases and smear-positive pulmonary TB patients may need additional interventions to ensure a favourable outcome.
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Affiliation(s)
- C Jackson
- Institute for Global Health, University College London (UCL), London, UK
| | - H R Stagg
- Institute for Global Health, University College London (UCL), London, UK
| | - A Doshi
- Operation ASHA, New Delhi, India
| | - D Pan
- Medical School, Imperial College London, London, UK
| | - A Sinha
- Operation ASHA, New Delhi, India
| | - R Batra
- Operation ASHA, New Delhi, India
| | - S Batra
- Operation ASHA, New Delhi, India
| | - I Abubakar
- Institute for Global Health, University College London (UCL), London, UK.,Public Health England, London, UK
| | - M Lipman
- UCL Respiratory, Division of Medicine, UCL, London, UK.,Royal Free London National Health Service Foundation Trust, London, UK
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Abstract
OBJECTIVE Analog research suggests that directive interventions might increase treatment engagement for non-symptomatic Asian American (AA) students; however, no studies have assessed whether directiveness improves therapy processes or clinical outcomes for AAs with mental health symptoms. This study tested the comparative efficacy of brief directive vs. non-directive intervention for AAs and European Americans (EAs) with subsyndromal depression. METHOD Participants were randomly assigned directive, non-directive, or cultural values interview conditions, and assessed three times over six months. Directive and non-directive treatment involved meeting with a therapist for a single, 20-minute session to receive psychoeducation and personalized feedback on depressive symptoms and coping strategies. Cultural values participants also met with a therapist. RESULTS Although results were mixed for the overall sample, directive treatment was generally superior to non-directive treatment and cultural values at addressing depressive symptoms, coping behavior, and working alliance. Ethnicity did moderate treatment effects for some outcomes, but in an unexpected manner. At six-month follow-up, the directive intervention was more effective than cultural values at reducing depressive symptoms for AAs; however, the cultural values condition was more effective than the non-directive intervention at reducing depressive symptoms for EAs. CONCLUSION Mixed evidence was found for directiveness as an Asian-specific treatment enhancement. Clinical or methodological significance of this article: This article adds to a complicated body of research and clinical work aiming to inform best practices for ethnic minorities. We found some evidence that a directive therapeutic style may be a "culturally invariant" clinical technique that could be beneficial to Asian American and European American populations alike. Yet, other findings suggest that directiveness might be uniquely advantageous for Asian Americans, particularly for long-term improvement of depressive symptoms.
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Affiliation(s)
- David Pan
- a Department of Psychology , New Mexico Highlands University , Las Vegas , NM , USA
| | - Stanley J Huey
- b Department of Psychology and Program in American Studies and Ethnicity , University of Southern California , Los Angeles , CA , USA
| | - Lara H Heflin
- a Department of Psychology , New Mexico Highlands University , Las Vegas , NM , USA
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Cai HC, Wang SJ, Fu L, Wang XM, Hou M, Qin P, Chen FP, Zhang XH, Huang H, He JS, Wu RH, Ma JY, Yang RC, Liu XF, Tian Y, Liu AJ, Wu JS, Zhu WW, Zhou YH, Liu WB, Hu Y, He WJ, Li Y, Pan D, Zhao YQ. [A prospective study of the efficacy and safety of maintenance therapy with recombinant human thrombopoietin in patients with primary immune thrombocytopenia: a multicenter study]. Zhonghua Xue Ye Xue Za Zhi 2017; 38:379-383. [PMID: 28565735 PMCID: PMC7354185 DOI: 10.3760/cma.j.issn.0253-2727.2017.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Indexed: 11/07/2022]
Abstract
Objective: To evaluate the efficacy and safety of maintenance therapy with reduced dose of rhTPO in the patients with primary immune thrombocytopenia (ITP) who attained stable platelet (PLT) counts after daily administration of rhTPO. Methods: Treatment was started with a daily administration of rhTPO (300 U/kg) for 2 consecutive weeks. Patients who attained stable PLT≥50×10(9)/L were enrolled to maintenance therapy starting with every other day administration of rhTPO, then adjusted dose interval to maintain platelet count (30-100) ×10(9)/L. Results: A total of 91 eligible patients were enrolled. Fourteen patients discontinued the study due to noncompliance (12/14) and investigator decision (2/14) . Among 77 patients who completed the study, 38 patients with the administration of rhTPO at every other day or less could maintain PLT≥30×10(9)/L for 12 weeks. The percentage of patients with a platelet response (PLT≥30×10(9)/L) at 4(th) week, 8(th) week and 12(th) week of maintain therapy was 92.6% (63/68) , 82.7% (43/52) and 85.0% (34/40) , respectively. Median platelet counts remained in the range of (70-124) ×10(9)/L. The overall incidence of rhTPO-related adverse events was 7.7%. All the adverse events were generally mild. Conclusion: Extending the dose interval of rhTPO is feasible to maintain stable platelet count in the patients with ITP, but the optimal dose interval is uncertain and might vary with individuals.
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Affiliation(s)
- H C Cai
- Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - S J Wang
- Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - L Fu
- People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, China
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Appleton SC, Connell DW, Singanayagam A, Bradley P, Pan D, Sanderson F, Cleaver B, Rahman A, Kon OM. Evaluation of prediagnosis emergency department presentations in patients with active tuberculosis: the role of chest radiography, risk factors and symptoms. BMJ Open Respir Res 2017; 4:e000154. [PMID: 28123749 PMCID: PMC5253606 DOI: 10.1136/bmjresp-2016-000154] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 10/24/2016] [Accepted: 10/26/2016] [Indexed: 11/04/2022] Open
Abstract
INTRODUCTION London has a high rate of tuberculosis (TB) with 2572 cases reported in 2014. Cases are more common in non-UK born, alcohol-dependent or homeless patients. The emergency department (ED) presents an opportunity for the diagnosis of TB in these patient groups. This is the first study describing the clinico-radiological characteristics of such attendances in two urban UK hospitals for pulmonary TB (PTB) and extrapulmonary TB (EPTB). METHODS We conducted a retrospective cohort study using the London TB Register (LTBR) and hospital records to identify patients who presented to two London ED's in the 6 months prior to their ultimate TB diagnosis 2011-2012. RESULTS 397 TB cases were identified. 39% (154/397) had presented to the ED in the 6 months prior to diagnosis. In the study population, the presence of cough, weight loss, fever and night sweats only had prevalence rates of 40%, 34%, 34% and 21%, respectively. Chest radiography was performed in 76% (117/154) of patients. For cases where a new diagnosis of TB was suspected, 73% (41/56) had an abnormal radiograph, compared with 36% (35/98) of patients where it was not. There was an abnormality on a chest radiograph in 73% (55/75) of PTB cases and also in 40% (21/52) of EPTB cases where a film was requested. CONCLUSIONS A large proportion of patients with TB present to ED. A diagnosis was more likely in the presence of an abnormal radiograph, suggesting opportunities for earlier diagnosis if risk factors, symptoms and chest radiograph findings are combined.
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Affiliation(s)
- S C Appleton
- Tuberculosis Service , Imperial College Healthcare NHS Trust , London , UK
| | - D W Connell
- Tuberculosis Service , Imperial College Healthcare NHS Trust , London , UK
| | - A Singanayagam
- Tuberculosis Service , Imperial College Healthcare NHS Trust , London , UK
| | - P Bradley
- Department of Emergency Medicine , Imperial College Healthcare NHS Trust , London , UK
| | - D Pan
- Department of Emergency Medicine , Imperial College Healthcare NHS Trust , London , UK
| | - F Sanderson
- Tuberculosis Service , Imperial College Healthcare NHS Trust , London , UK
| | - B Cleaver
- Department of Emergency Medicine , Imperial College Healthcare NHS Trust , London , UK
| | - A Rahman
- Department of Emergency Medicine , Imperial College Healthcare NHS Trust , London , UK
| | - O M Kon
- Tuberculosis Service , Imperial College Healthcare NHS Trust , London , UK
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Pan D, Shaye O, Kobashigawa J. Tacrolimus-associated Diffuse Gastrointestinal Ulcerations and Pathergy: A Case Report. Transplant Proc 2017; 49:216-217. [DOI: 10.1016/j.transproceed.2016.09.040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 09/28/2016] [Indexed: 10/20/2022]
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Wu Z, Wang G, Pan D, Guo Y, Zeng X, Sun Y, Cao J. Inflammation-related pro-apoptotic activity of exopolysaccharides isolated from Lactococcus lactis subsp. lactis. Benef Microbes 2016; 7:761-768. [DOI: 10.3920/bm2015.0192] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Exopolysaccharides (EPS) have attracted attention recently for possible use in suppressing early stage breast cancer. In this study, a mannan EPS produced by Lactococcus lactis subsp. lactis was found to affect the production of inflammatory cytokines. EPS (300 μg/ml) can significantly enhance tumour necrosis factor alpha and inducible NO synthase release in MCF-7 cells compared to control cells in a concentration-dependent manner. Also the intracellular calcium level was found to increase with the concentration of EPS. After EPS-treatment, a significant reduction in mitochondrial potential was observed, as was nuclear condensation and cell shrinkage. These results may be helpful in further understanding the anti-tumour properties of lactic acid bacteria.
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Affiliation(s)
- Z. Wu
- Department of Food Science and Nutrition, Ginling College, Nanjing Normal University, Nanjing 210097, Jiangsu, China P.R
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang Province, Marine Science School, Ningbo University, Ningbo 315211, Zhejiang, China P.R
| | - G. Wang
- Department of Landscape Engineering, Heze University, Heze 274051, Shandong, China P.R
| | - D. Pan
- Department of Food Science and Nutrition, Ginling College, Nanjing Normal University, Nanjing 210097, Jiangsu, China P.R
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang Province, Marine Science School, Ningbo University, Ningbo 315211, Zhejiang, China P.R
| | - Y. Guo
- Department of Food Science and Nutrition, Ginling College, Nanjing Normal University, Nanjing 210097, Jiangsu, China P.R
| | - X. Zeng
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang Province, Marine Science School, Ningbo University, Ningbo 315211, Zhejiang, China P.R
| | - Y. Sun
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang Province, Marine Science School, Ningbo University, Ningbo 315211, Zhejiang, China P.R
| | - J. Cao
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang Province, Marine Science School, Ningbo University, Ningbo 315211, Zhejiang, China P.R
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Bazargan-Hejazi S, Ahmadi A, Rahmani E, Mojtahedzadeh M, Pan D. 450 Profile of self-inflicted harm in los angeles by race/ethnicity, 2001–2010. Inj Prev 2016. [DOI: 10.1136/injuryprev-2016-042156.450] [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: 11/03/2022]
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Williams DJ, Archer R, Archibald P, Bantounas I, Baptista R, Barker R, Barry J, Bietrix F, Blair N, Braybrook J, Campbell J, Canham M, Chandra A, Foldes G, Gilmanshin R, Girard M, Gorjup E, Hewitt Z, Hourd P, Hyllner J, Jesson H, Kee J, Kerby J, Kotsopoulou N, Kowalski S, Leidel C, Marshall D, Masi L, McCall M, McCann C, Medcalf N, Moore H, Ozawa H, Pan D, Parmar M, Plant AL, Reinwald Y, Sebastian S, Stacey G, Thomas RJ, Thomas D, Thurman-Newell J, Turner M, Vitillo L, Wall I, Wilson A, Wolfrum J, Yang Y, Zimmerman H. Comparability: manufacturing, characterization and controls, report of a UK Regenerative Medicine Platform Pluripotent Stem Cell Platform Workshop, Trinity Hall, Cambridge, 14-15 September 2015. Regen Med 2016; 11:483-92. [PMID: 27404768 PMCID: PMC5422032 DOI: 10.2217/rme-2016-0053] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This paper summarizes the proceedings of a workshop held at Trinity Hall, Cambridge to discuss comparability and includes additional information and references to related information added subsequently to the workshop. Comparability is the need to demonstrate equivalence of product after a process change; a recent publication states that this ‘may be difficult for cell-based medicinal products’. Therefore a well-managed change process is required which needs access to good science and regulatory advice and developers are encouraged to seek help early. The workshop shared current thinking and best practice and allowed the definition of key research questions. The intent of this report is to summarize the key issues and the consensus reached on each of these by the expert delegates.
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Affiliation(s)
- David J Williams
- Loughborough University, Centre for Biological Engineering, Holywell Park, Loughborough LE11 3TU, UK
| | | | - Peter Archibald
- Loughborough University, Centre for Biological Engineering, Holywell Park, Loughborough LE11 3TU, UK
| | - Ioannis Bantounas
- University of Manchester, Michael Smith Building, Oxford Road, Manchester, M13 9PT, UK
| | - Ricardo Baptista
- Cell & Gene Therapy Catapult, 12th Floor Tower Wing, Guy's Hospital, Great Maze Pond, London, SE1 9RT, UK
| | - Roger Barker
- University of Cambridge, John van Geest Centre for Brain Repair, E.D. Adrian Building, Forvie Site, Robinson Way, Cambridge, CB2 0PY, UK
| | - Jacqueline Barry
- Cell & Gene Therapy Catapult, 12th Floor Tower Wing, Guy's Hospital, Great Maze Pond, London, SE1 9RT, UK
| | - Florence Bietrix
- European Infrastructure for Translational Medicine, EATRIS Headquarters, De Boelelaan 1118, 1081 HZ Amsterdam, The Netherlands
| | - Nicholas Blair
- University of Cambridge, Anne McLaren Laboratory for Regenerative Medicine West Forvie Building, Robinson Way, Cambridge, CB2 0SZ, UK
| | | | | | - Maurice Canham
- University of Edinburgh, MRC Centre for Regenerative Medicine, Edinburgh Bioquarter, 5 Little France Drive, Edinburgh, EH16 4UU, UK
| | - Amit Chandra
- Loughborough University, Centre for Biological Engineering, Holywell Park, Loughborough LE11 3TU, UK
| | - Gabor Foldes
- Imperial College London, Faculty of Medicine, National Heart & Lung Institute, ICTEM building, Hammersmith Campus, Du Cane Road, London, W12 0NN, UK
| | - Rudy Gilmanshin
- FloDesign Sonics Inc., 380 Main St, Wilbraham, MA 01095, USA
| | - Mathilde Girard
- I-Stem, CECS/I-STEM, 2, Rue Henri Desbruères, 91100 Corbeil-Essonnes, France
| | - Erwin Gorjup
- Fraunhofer IBMT, Außenstelle Cambridge/Babraham, Meditrina Building, Babraham Research Campus, Cambridge, CB22 3AT, UK
| | - Zöe Hewitt
- University of Sheffield, Centre for Stem Cell Biology, Alfred Denny Building, Western Bank, Sheffield S10 2TN, UK
| | - Paul Hourd
- Loughborough University, Centre for Biological Engineering, Holywell Park, Loughborough LE11 3TU, UK
| | - Johan Hyllner
- Cell & Gene Therapy Catapult, 12th Floor Tower Wing, Guy's Hospital, Great Maze Pond, London, SE1 9RT, UK
| | - Helen Jesson
- Loughborough University, Centre for Biological Engineering, Holywell Park, Loughborough LE11 3TU, UK
| | - Jasmin Kee
- Reneuron, Pencoed Business Park, Pencoed, Bridgend CF35 5HY, UK
| | - Julie Kerby
- Neusentis (Pfizer Ltd.), The Portway Building, Granta Park, Great Abington, Cambridge CB21 6GS, UK
| | - Nina Kotsopoulou
- Autolus Limited, Forest House, 58 Wood Lane, White City, London, W12 7RP, UK
| | | | - Chris Leidel
- FloDesign Sonics Inc., 380 Main St, Wilbraham, MA 01095, USA
| | - Damian Marshall
- Cell & Gene Therapy Catapult, 12th Floor Tower Wing, Guy's Hospital, Great Maze Pond, London, SE1 9RT, UK
| | - Louis Masi
- FloDesign Sonics Inc., 380 Main St, Wilbraham, MA 01095, USA
| | - Mark McCall
- Loughborough University, Centre for Biological Engineering, Holywell Park, Loughborough LE11 3TU, UK
| | - Conor McCann
- University College London, Stem Cells & Regenerative Medicine Section, UCL Institute of Child Health, 30 Guilford Street, London, WC1N 1EH, UK
| | - Nicholas Medcalf
- Loughborough University, Centre for Biological Engineering, Holywell Park, Loughborough LE11 3TU, UK
| | - Harry Moore
- University of Sheffield, Centre for Stem Cell Biology, Alfred Denny Building, Western Bank, Sheffield S10 2TN, UK
| | - Hiroki Ozawa
- University College London, UCL Cancer Institute, Paul O'Gorman Building, 72 Huntley Street, London, WC1E 6DD, UK
| | - David Pan
- Medical Research Council, 2nd Floor David Phillips Building, Polaris House, North Star Avenue, Swindon, SN2 1FL, UK
| | - Malin Parmar
- Lund University, Developmental & Regenerative Neurobiology, Wallenberg Neuroscience Centre, Lund University, 221 84 Lund, Sweden
| | - Anne L Plant
- NIST, Material Measurement Laboratory, NIST, Gaithersburg, MD 20899, USA
| | - Yvonne Reinwald
- Keele University, Institute for Science & Technology in Medicine, Keele University Thronburrow Drive, Hartshill Stoke-on-Trent, Staffordshire, ST4 7QB, UK
| | - Sujith Sebastian
- Loughborough University, Centre for Biological Engineering, Holywell Park, Loughborough LE11 3TU, UK
| | - Glyn Stacey
- National Institute for Biological Standards & Control, Blanche Lane, South Mimms, Potters Bar, Hertfordshire, EN6 3QG, UK
| | - Robert J Thomas
- Loughborough University, Centre for Biological Engineering, Holywell Park, Loughborough LE11 3TU, UK
| | - Dave Thomas
- TAP Biosystems, Sartorius Stedim, York Way, Royston, Hertfordshire, SG8 5WY UK
| | - Jamie Thurman-Newell
- Loughborough University, Centre for Biological Engineering, Holywell Park, Loughborough LE11 3TU, UK
| | - Marc Turner
- Scottish National Blood Transfusion Services, SNBTS HeadQuarters, 21 Ellen's Glen Road, Edinburgh, EH17 7QT, UK
| | - Loriana Vitillo
- University of Cambridge, Anne McLaren Laboratory for Regenerative Medicine West Forvie Building, Robinson Way, Cambridge, CB2 0SZ, UK
| | - Ivan Wall
- University College London, Department of Biochemical Engineering, Torrington Place, London, WC1E 7JE, UK
| | - Alison Wilson
- CellData Services, 3 Burgate Court, York, YO43 4TZ, UK
| | - Jacqueline Wolfrum
- MIT Center for Biomedical Innovation, Building E19-604, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Ying Yang
- Keele University, Institute for Science & Technology in Medicine, Keele University Thronburrow Drive, Hartshill Stoke-on-Trent, Staffordshire, ST4 7QB, UK
| | - Heiko Zimmerman
- Fraunhofer IBMT, Fraunhofer-Institut für Biomedizinische Technik IBMT, Joseph-von-Fraunhofer-Weg 1, 66280 Sulzbach, Germany
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Cheng H, Pan D, Tsai J. SU-F-T-608: Forward Treatment Planning Techniques On Leksell Gamma Knife for the Normalization Effect Reduction. Med Phys 2016. [DOI: 10.1118/1.4956793] [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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Li XF, Pan D, Zhang WL, Zhou J, Liang JJ. Association of NT-proBNP and interleukin-17 levels with heart failure in elderly patients. Genet Mol Res 2016; 15:gmr8014. [PMID: 27323026 DOI: 10.4238/gmr.15028014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Pro-B-type natriuretic peptide (NT-proBNP) and interleukin-17 (IL-17) are involved in the pathophysiological processes of heart failure; however, the exact role of IL-17 is not clear. We explored the relationship between IL-17 and NT-proBNP, as a clinical parameter, in heart failure. The whole blood IL-17 and NT-proBNP levels and the readmission rates in 70 patients with chronic heart failure class III or IV according to the New York Heart Association and 35 patients with normal heart function (control group) were measured and compared. The left ventricle ejection fractions (LVEFs) and NT-proBNP and IL-17 levels in cardiac functional class III (40.38 ± 4.76%, 7780 ± 6393 pg/mL, 8.65 ± 3.05 pg/mL, respectively) and class IV (31.59 ± 4.31%, 13,704 ± 10,945, 21.10 ± 10.60 pg/mL, respectively) were higher than those in the control group (61.27 ± 5.66%, 420 ± 256 pg/mL, 3.53 ± 2.05 pg/mL, respectively). Compared to the cardiac functional class IV, class III showed significantly higher values for LVEF and NT-proBNP and IL-17 levels (P < 0.05). The readmission rates of the patients in cardiac functional class III at 3 and 6 months (15.7 and 34.4%, respectively) and cardiac functional class IV at 3 and 6 months (39.5 and 76.3%, respectively) were significantly higher than those in the control group (0 and 5.7%, respectively) (P < 0.05). The NT-proBNP and IL-17 levels increased as the heart function worsened. NT-proBNP and IL-17 may play essential roles in the process of heart failure.
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Affiliation(s)
- X F Li
- Department of Cardiology, Liaocheng People's Hospital, Liaocheng, Shandong, China
| | - D Pan
- Department of Cardiology, Liaocheng Maternal and Child Health Hospital, Liaocheng, Shandong, China
| | - W L Zhang
- Department of Cardiology, The Third People's Hospital of Liaocheng, Shandong, China
| | - J Zhou
- Liaocheng Vocational & Technical College, Liaocheng, Shandong, China
| | - J J Liang
- Department of Cardiology, Shandong Provincial Qianfoshan Hospital, Jinan, Shandong, China
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Pan D, Mionetto A, Calero N, Reynoso MM, Torres A, Bettucci L. Population genetic analysis and trichothecene profiling of Fusarium graminearum from wheat in Uruguay. Genet Mol Res 2016; 15:15017270. [PMID: 26985955 DOI: 10.4238/gmr.15017270] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Fusarium graminearum sensu stricto (F. graminearum s.s.) is the major causal agent of Fusarium head blight of wheat worldwide, and contaminates grains with trichothecene mycotoxins that cause serious threats to food safety and animal health. An important aspect of managing this pathogen and reducing mycotoxin contamination of wheat is knowledge regarding its population genetics. Therefore, isolates of F. graminearum s.s. from the major wheat-growing region of Uruguay were analyzed by amplified fragment length polymorphism assays, PCR genotyping, and chemical analysis of trichothecene production. Of the 102 isolates identified as having the 15-ADON genotype via PCR genotyping, all were DON producers, but only 41 strains were also 15-ADON producers, as determined by chemical analysis. The populations were genotypically diverse but genetically similar, with significant genetic exchange occurring between them. Analysis of molecular variance indicated that most of the genetic variability resulted from differences between isolates within populations. Multilocus linkage disequilibrium analysis suggested that the isolates had a panmictic population genetic structure and that there is significant recombination occurs in F. graminearum s.s. In conclusion, tour findings provide the first detailed description of the genetic structure and trichothecene production of populations of F. graminearum s.s. from Uruguay, and expands our understanding of the agroecology of F. graminearum and of the correlation between genotypes and trichothecene chemotypes.
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Affiliation(s)
- D Pan
- Laboratorio de Micología, Facultad de Ciencias, Facultad de Ingeniería, UdelaR, Montevideo, Uruguay
| | - A Mionetto
- Laboratorio de Micología, Facultad de Ciencias, Facultad de Ingeniería, UdelaR, Montevideo, Uruguay
| | - N Calero
- Laboratorio de Micología, Facultad de Ciencias, Facultad de Ingeniería, UdelaR, Montevideo, Uruguay
| | - M M Reynoso
- Departamento de Microbiología e Immunología, Facultad de Ciencias Exactas, Físico Químicas y Naturales, Universidad Nacional de Río Cuarto, Córdoba, Argentina
| | - A Torres
- Departamento de Microbiología e Immunología, Facultad de Ciencias Exactas, Físico Químicas y Naturales, Universidad Nacional de Río Cuarto, Córdoba, Argentina
| | - L Bettucci
- Laboratorio de Micología, Facultad de Ciencias, Facultad de Ingeniería, UdelaR, Montevideo, Uruguay
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Abstract
Growth of high-quality single-crystalline InSb layers remains challenging in material science. Such layered InSb materials are highly desired for searching for and manipulation of Majorana Fermions in solid state, a fundamental research task in physics today, and for development of novel high-speed nanoelectronic and infrared optoelectronic devices. Here, we report on a new route toward growth of single-crystalline, layered InSb materials. We demonstrate the successful growth of free-standing, two-dimensional InSb nanosheets on one-dimensional InAs nanowires by molecular-beam epitaxy. The grown InSb nanosheets are pure zinc-blende single crystals. The length and width of the InSb nanosheets are up to several micrometers and the thickness is down to ∼10 nm. The InSb nanosheets show a clear ambipolar behavior and a high electron mobility. Our work will open up new technology routes toward the development of InSb-based devices for applications in nanoelectronics, optoelectronics, and quantum electronics and for the study of fundamental physical phenomena.
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Affiliation(s)
- D Pan
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences , P.O. Box 912, Beijing 100083, China
| | - D X Fan
- Key Laboratory for the Physics and Chemistry of Nanodevices and Department of Electronics, Peking University , Beijing 100871, China
| | - N Kang
- Key Laboratory for the Physics and Chemistry of Nanodevices and Department of Electronics, Peking University , Beijing 100871, China
| | - J H Zhi
- Key Laboratory for the Physics and Chemistry of Nanodevices and Department of Electronics, Peking University , Beijing 100871, China
| | - X Z Yu
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences , P.O. Box 912, Beijing 100083, China
| | - H Q Xu
- Key Laboratory for the Physics and Chemistry of Nanodevices and Department of Electronics, Peking University , Beijing 100871, China
| | - J H Zhao
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences , P.O. Box 912, Beijing 100083, China
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Misra SK, Mukherjee P, Ohoka A, Schwartz-Duval AS, Tiwari S, Bhargava R, Pan D. Vibrational spectroscopy and imaging for concurrent cellular trafficking of co-localized doxorubicin and deuterated phospholipid vesicles. Nanoscale 2016; 8:2826-31. [PMID: 26763407 PMCID: PMC4868062 DOI: 10.1039/c5nr07975f] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Simultaneous tracking of nanoparticles and encapsulated payload is of great importance and visualizing their activity is arduous. Here we use vibrational spectroscopy to study the in vitro tracking of co-localized lipid nanoparticles and encapsulated drug employing a model system derived from doxorubicin-encapsulated deuterated phospholipid (dodecyl phosphocholine-d38) single tailed phospholipid vesicles.
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Affiliation(s)
- S K Misra
- Departments of Bioengineering and Materials Science and Engineering, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Carle Foundation Hospital, 502 N. Busey St., Urbana, IL 61801, USA.
| | - P Mukherjee
- Department of Bioengineering, Electrical and Computer Engineering, Chemical and Biomolecular Engineering, Chemistry, and Mechanical Science and Engineering, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 1304 W. Springfield Ave, Urbana, IL 61801, USA.
| | - A Ohoka
- Departments of Bioengineering and Materials Science and Engineering, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Carle Foundation Hospital, 502 N. Busey St., Urbana, IL 61801, USA.
| | - A S Schwartz-Duval
- Departments of Bioengineering and Materials Science and Engineering, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Carle Foundation Hospital, 502 N. Busey St., Urbana, IL 61801, USA.
| | - S Tiwari
- Department of Bioengineering, Electrical and Computer Engineering, Chemical and Biomolecular Engineering, Chemistry, and Mechanical Science and Engineering, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 1304 W. Springfield Ave, Urbana, IL 61801, USA.
| | - R Bhargava
- Department of Bioengineering, Electrical and Computer Engineering, Chemical and Biomolecular Engineering, Chemistry, and Mechanical Science and Engineering, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 1304 W. Springfield Ave, Urbana, IL 61801, USA.
| | - D Pan
- Departments of Bioengineering and Materials Science and Engineering, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Carle Foundation Hospital, 502 N. Busey St., Urbana, IL 61801, USA.
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Laine RM, Furgal JC, Doan P, Pan D, Popova V, Zhang X. Avoiding Carbothermal Reduction: Distillation of Alkoxysilanes from Biogenic, Green, and Sustainable Sources. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506838] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Richard M. Laine
- Department of Materials Science and Engineering University of Michigan Ann Arbor MI 48109-2136 USA
- Department of Macromolecular Science and Engineering University of Michigan USA
| | | | - Phi Doan
- Department of Chemistry University of Michigan USA
| | - David Pan
- Department of Macromolecular Science and Engineering University of Michigan USA
| | | | - Xingwen Zhang
- Department of Chemistry Harbin Institute of Technology Harbin 150001 China
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Laine RM, Furgal JC, Doan P, Pan D, Popova V, Zhang X. Avoiding Carbothermal Reduction: Distillation of Alkoxysilanes from Biogenic, Green, and Sustainable Sources. Angew Chem Int Ed Engl 2015; 55:1065-9. [DOI: 10.1002/anie.201506838] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 10/19/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Richard M. Laine
- Department of Materials Science and Engineering University of Michigan Ann Arbor MI 48109-2136 USA
- Department of Macromolecular Science and Engineering University of Michigan USA
| | | | - Phi Doan
- Department of Chemistry University of Michigan USA
| | - David Pan
- Department of Macromolecular Science and Engineering University of Michigan USA
| | | | - Xingwen Zhang
- Department of Chemistry Harbin Institute of Technology Harbin 150001 China
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Abbara A, Lang S, Kon OM, Collin SM, Pan D, Hansel T, Ravindran R, Holder R, John L, Davidson RN. S36 Weekly audiograms pre-emptively identify amikacin related ototoxicity in MDR-TB. Thorax 2015. [DOI: 10.1136/thoraxjnl-2015-207770.42] [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: 11/03/2022]
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Pan D, Lee E, Lock L, Batra R, Abubakar I, Batra S, Lipman M. P254 Utilising community empowerment and biometrics to improve tuberculosis treatment outcomes in Delhi’s slum population: the Op ASHA model. Thorax 2015. [DOI: 10.1136/thoraxjnl-2015-207770.390] [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: 11/04/2022]
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Soh C, Lin Z, Kuan W, Pan D. 91 Unscheduled Return Visits to the Emergency Department: 9 Years On. Ann Emerg Med 2015. [DOI: 10.1016/j.annemergmed.2015.07.123] [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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Hu X, Pan D, Lin M, Han H, Li F. One-Step Electrochemical Deposition of Reduced Graphene Oxide-Bismuth Nanocomposites for Determination of Lead. ACTA ACUST UNITED AC 2015. [DOI: 10.1149/2.0021509eel] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Pan D, Mionetto A, Tiscornia S, Bettucci L. Endophytic bacteria from wheat grain as biocontrol agents of Fusarium graminearum and deoxynivalenol production in wheat. Mycotoxin Res 2015; 31:137-43. [PMID: 25956808 DOI: 10.1007/s12550-015-0224-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 03/13/2015] [Accepted: 04/27/2015] [Indexed: 11/30/2022]
Abstract
In Uruguay, Fusarium graminearum is the most common species that infects wheat and is responsible for Fusarium head blight (FHB) and contamination of grain with deoxynivalenol (DON). The aim of this work was to select bacterial endophytes isolated from wheat grain to evaluate their antagonistic ability against F. graminearum and DON production in vitro and under field conditions. Four strains identified as Bacillus megaterium (BM1) and Bacillus subtilis (BS43, BSM0 y BSM2) significantly reduced fungal growth and spore germination of F. graminearum. This antagonist activity remained unchanged after the bacterial cultures were heat treated. Under field conditions, treatments with antagonist BM1 was the most effective, reducing the FHB incidence and severity by 93 and 54 %, respectively, and the production of DON by 89.3 %.
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Affiliation(s)
- D Pan
- Laboratorio de Micología, Facultad de Ciencias - Facultad de Ingeniería, UdelaR, Julio Herrera y Reissig 565, 11200, Montevideo, Uruguay,
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Garcia-Roig M, Pan D, Katkoori D, Manoharan M. V12-14 SYNCHRONOUS PANNICULECTOMY AND ILEAL CONDUIT REVISION FOR OBESE PATIENTS WITH STOMAL STENOSIS. J Urol 2015. [DOI: 10.1016/j.juro.2015.02.2784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Mallick A, Pan D. Case Study of a Prisoner with Antisocial Personality Disorder in a Jail of West Bengal. Eur Psychiatry 2015. [DOI: 10.1016/s0924-9338(15)31171-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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49
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Pan D, Mallick A. Role of Blonanserin in Cannabis-induced Psychosis. Eur Psychiatry 2015. [DOI: 10.1016/s0924-9338(15)30643-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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50
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Pan D, Mallick A. Efficacy of Fluoxetine in Developmental Coordination Disorder in Children. Eur Psychiatry 2015. [DOI: 10.1016/s0924-9338(15)30931-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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