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Parra J, Beaton A, Seipke RF, Wilkinson B, Hutchings MI, Duncan KR. Antibiotics from rare actinomycetes, beyond the genus Streptomyces. Curr Opin Microbiol 2023; 76:102385. [PMID: 37804816 DOI: 10.1016/j.mib.2023.102385] [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: 04/02/2023] [Revised: 09/05/2023] [Accepted: 09/06/2023] [Indexed: 10/09/2023]
Abstract
Throughout the golden age of antibiotic discovery, Streptomyces have been unsurpassed for their ability to produce bioactive metabolites. Yet, this success has been hampered by rediscovery. As we enter a new stage of biodiscovery, omics data and existing scientific repositories can enable informed choices on the biodiversity that may yield novel antibiotics. Here, we focus on the chemical potential of rare actinomycetes, defined as bacteria within the order Actinomycetales, but not belonging to the genus Streptomyces. They are named as such due to their less-frequent isolation under standard laboratory practices, yet there is increasing evidence to suggest these biologically diverse genera harbour considerable biosynthetic and chemical diversity. In this review, we focus on examples of successful isolation and genera that have been the focus of more concentrated biodiscovery efforts, we survey the representation of rare actinomycete taxa, compared with Streptomyces, across natural product data repositories in addition to its biosynthetic potential. This is followed by an overview of clinically useful drugs produced by rare actinomycetes and considerations for future biodiscovery efforts. There is much to learn about these underexplored taxa, and mounting evidence suggests that they are a fruitful avenue for the discovery of novel antimicrobials.
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Affiliation(s)
- Jonathan Parra
- Instituto de Investigaciones Farmacéuticas (INIFAR), Facultad de Farmacia, Universidad de Costa Rica, San José 11501-2060, Costa Rica; Centro Nacional de Innovaciones Biotecnológicas (CENIBiot), CeNAT-CONARE, San José 1174-1200, Costa Rica
| | - Ainsley Beaton
- John Innes Centre, Department of Molecular Microbiology, Norwich Research Park, Norwich NR4 7UH, UK
| | - Ryan F Seipke
- University of Leeds, Faculty of Biological Sciences, Astbury Centre for Structural Molecular Biology, Leeds LS2 9JT, UK
| | - Barrie Wilkinson
- John Innes Centre, Department of Molecular Microbiology, Norwich Research Park, Norwich NR4 7UH, UK
| | - Matthew I Hutchings
- John Innes Centre, Department of Molecular Microbiology, Norwich Research Park, Norwich NR4 7UH, UK
| | - Katherine R Duncan
- University of Strathclyde, Strathclyde Institute of Pharmacy and Biomedical Sciences, 141 Cathedral Street, Glasgow G4 0RE, UK.
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2
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Gabriel PE, Pinar U, Parra J, Vaessen C, Mozer P, Chartier-Kastler E, Rouprêt M, Seisen T. [Pathological pelvic lymph node involvement in muscle-invasive bladder cancer patients treated with radical cystectomy: A narrative review]. Prog Urol 2023; 33:145-154. [PMID: 36604248 DOI: 10.1016/j.purol.2022.12.013] [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: 05/23/2022] [Revised: 12/06/2022] [Accepted: 12/19/2022] [Indexed: 01/05/2023]
Abstract
OBJECTIVE To perform a narrative review of the contemporary literature on the diagnosis, prognosis and adjuvant management of muscle-invasive bladder cancer (MIBC) patients with pathological pelvic lymph node involvement (pN+) at radical cystectomy. METHOD A narrative review of the contemporary literature available on Medline was conducted to report studies evaluating the diagnosis, prognosis and/or adjuvant treatments for MIBC patients with pN+ disease at radical cystectomy. RESULTS Open or robotic extended pelvic lymph node dissection up to the crossing of the ureter with common iliac vessels can enhance the diagnosis of pN+ MIBC, especially using separate packages for the submission of a maximum number of lymph nodes. The main prognosis factors for pN+ patients are the number of positive and retrieved lymph nodes, lymph node density, extranodal extension as well as lymph node metastasis diameter. Adjuvant chemotherapy is likely to prolong overall survival in pN+ patients treated with radical cystectomy alone while adjuvant immunotherapy using nivolumab has been shown to decrease the risk of recurrence in all pN+ patients, especially those with ypN+ disease after neoadjuvant chemotherapy followed by radical cystectomy. However, few data are currently available on the role of adjuvant radiation therapy, which remains currently experimental for these patients. CONCLUSION Multiple parameters have been reported to impact the diagnosis and prognosis of patients with pN+ MIBC at radical cystectomy. Adjuvant management is currently based on chemotherapy and immunotherapy with preliminary data on radiation therapy.
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Affiliation(s)
- P-E Gabriel
- Sorbonne université, GRC n(o) 5, onco-urologie prédictive, AP-HP, hôpital de la Pitié-Salpêtrière, service d'urologie, 75013 Paris, France.
| | - U Pinar
- Sorbonne université, GRC n(o) 5, onco-urologie prédictive, AP-HP, hôpital de la Pitié-Salpêtrière, service d'urologie, 75013 Paris, France
| | - J Parra
- Sorbonne université, GRC n(o) 5, onco-urologie prédictive, AP-HP, hôpital de la Pitié-Salpêtrière, service d'urologie, 75013 Paris, France
| | - C Vaessen
- Sorbonne université, GRC n(o) 5, onco-urologie prédictive, AP-HP, hôpital de la Pitié-Salpêtrière, service d'urologie, 75013 Paris, France
| | - P Mozer
- Sorbonne université, GRC n(o) 5, onco-urologie prédictive, AP-HP, hôpital de la Pitié-Salpêtrière, service d'urologie, 75013 Paris, France
| | - E Chartier-Kastler
- Sorbonne université, GRC n(o) 5, onco-urologie prédictive, AP-HP, hôpital de la Pitié-Salpêtrière, service d'urologie, 75013 Paris, France
| | - M Rouprêt
- Sorbonne université, GRC n(o) 5, onco-urologie prédictive, AP-HP, hôpital de la Pitié-Salpêtrière, service d'urologie, 75013 Paris, France
| | - T Seisen
- Sorbonne université, GRC n(o) 5, onco-urologie prédictive, AP-HP, hôpital de la Pitié-Salpêtrière, service d'urologie, 75013 Paris, France
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3
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Krings G, Ayoub E, Campi R, Rouprêt M, Vaessen C, Parra J, Mozer P. Ureteropelvic junction obstruction and renal calculi: Simultaneous treatment by robot-assisted laparoscopic pyeloplasty and transcutaneous retrograde flexible ureteroscopy. Technique description and early outcomes. Prog Urol 2023; 33:279-284. [PMID: 36792487 DOI: 10.1016/j.purol.2023.01.006] [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: 09/28/2022] [Revised: 01/20/2023] [Accepted: 01/24/2023] [Indexed: 02/15/2023]
Abstract
BACKGROUND Ureteropelvic junction obstruction (UPJO) and renal calculi are associated in 20 to 30% of cases and treatment is mandatory. The simultaneous surgical management is a therapeutic challenge that is still a source of controversy. We describe our technique combining robot-assisted laparoscopic pyeloplasty and transcutaneous retrograde flexible ureteroscopy (fURS), assessing the feasibility of simultaneous treatment through an original technique. METHODS This single centre series reports our initial experience with 12 patients. From January 2014 to September 2018, 12 patients underwent robot-assisted laparoscopic pyeloplasty with simultaneous fURS for UPJO and renal calculi. Mean age was 46 years (24-68). 92% had multiple renal stones and the mean cumulative stone diameter was 31,3mm. Robot-assisted pyeloplasty was performed with peroperative transcutaneous retrograde fURS through a ureteral access sheath introduced in an incision on the bassinet through a subcostal trocar. Stone extraction was performed using a basket. RESULTS All patients underwent surgery successfully, achieving UPJ repair and complete stone extraction. Mean operating time was 92,5min (85-110). All reported Clavien-Dindo complications were grade 1. Non-contrast enhanced abdominal CT performed 1 month after surgery confirmed the absence of residual stones in all patients. Mean follow-up time was 10 months with no recurrence of UPJO. CONCLUSION This small series confirms the feasibility with good surgical results of concomitant robot-assisted laparoscopic pyeloplasty and transcutaneous retrograde fURS stone extraction. No major complications were observed. This technique is easily reproducible but requires 2 experienced urologists to be achieved in a contained operative time.
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Affiliation(s)
- G Krings
- Academic Department of Urology, AP-HP, Hôpital Pitié-Salpétrière, Paris, France; Urology Department, CHU UCL Namur, 1 Av Gaston Therasse, 5530 Yvoir, Belgium.
| | - E Ayoub
- Academic Department of Urology, AP-HP, Hôpital Pitié-Salpétrière, Paris, France.
| | - R Campi
- Academic Department of Urology, AP-HP, Hôpital Pitié-Salpétrière, Paris, France; Department of Urology, University of Florence, Careggi Hospital, Urology, Florence, Italy..
| | - M Rouprêt
- Academic Department of Urology, AP-HP, Hôpital Pitié-Salpétrière, Paris, France; Sorbonne Université, GRC n°5, ONCOTYPE-URO, AP-HP, Hôpital Pitié-Salpêtrière, 75013 Paris, France.
| | - C Vaessen
- Academic Department of Urology, AP-HP, Hôpital Pitié-Salpétrière, Paris, France.
| | - J Parra
- Academic Department of Urology, AP-HP, Hôpital Pitié-Salpétrière, Paris, France.
| | - P Mozer
- Academic Department of Urology, AP-HP, Hôpital Pitié-Salpétrière, Paris, France; Sorbonne Université, Institut des Systèmes Intelligents et de Robotique (ISIR) UPMC - CNRS/UMR 7222, 75005 Paris, France.
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4
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Joyeux L, van der Merwe J, Aertsen M, Patel PA, Khatoun A, Mori da Cunha MGMC, De Vleeschauwer S, Parra J, Danzer E, McLaughlin M, Stoyanov D, Vercauteren T, Ourselin S, Radaelli E, de Coppi P, Van Calenbergh F, Deprest J. Neuroprotection is improved by watertightness of fetal spina bifida repair in the sheep model. Ultrasound Obstet Gynecol 2023; 61:81-92. [PMID: 35353933 DOI: 10.1002/uog.24907] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 03/01/2022] [Accepted: 03/21/2022] [Indexed: 05/27/2023]
Abstract
OBJECTIVES A contributing factor to unsuccessful prenatal spina bifida aperta (SBA) repair via an open approach may be incomplete neurosurgical repair causing persistent in-utero leakage of cerebrospinal fluid (CSF) and exposure of the fetal spinal cord to amniotic fluid. We aimed to investigate the neurostructural and neurofunctional efficacy of watertight prenatal SBA repair in a validated SBA fetal lamb model. METHODS A well-powered superiority study was conducted in the validated SBA fetal lamb model (n = 7 per group). The outcomes of lambs which underwent watertight or non-watertight multilayer repair through an open approach were compared to those of unrepaired SBA lambs (historical controls) at delivery (term = 145 days). At ∼75 days, fetal lambs underwent standardized induction of lumbar SBA. At ∼100 days, they were assigned to an either watertight or non-watertight layered repair group based on an intraoperative watertightness test using subcutaneous fluorescein injection. At 1-2 days postnatally, as primary outcome, we assessed reversal of hindbrain herniation using magnetic resonance imaging (MRI). Secondary proxies of neuroprotection were: absence of CSF leakage at the repair site; hindlimb motor function based on joint-movement score, locomotor grade and Motor Evoked Potential (MEP); four-score neuroprotection scale, encompassing live birth, complete hindbrain herniation reversal, absence of CSF leakage and joint-movement score ≥ 9/15; and brain and spinal cord histology and immunohistochemistry. As the watertightness test cannot be used clinically due to its invasiveness, we developed a potential surrogate intraoperative three-score skin-repair-quality scale based on visual assessment of the quality of the skin repair (suture inter-run distance ≤ 3 mm, absence of tear and absence of ischemia), with high quality defined by a score ≥ 2/3 and low quality by a score < 2/3, and assessed its relationship with improved outcome. RESULTS Compared with unrepaired lambs, lambs with watertight repair achieved a high level of neuroprotection (neuroprotection score of 4/4 in 5/7 vs 0/7 lambs) as evidenced by: a significant 100% (vs 14%) reversal of hindbrain herniation on MRI; low CSF leakage (14% vs 100%); better hindlimb motor function, with higher joint-movement score, locomotor grade and MEP area under the curve and peak-to-peak amplitude; higher neuronal density in the hippocampus and corpus callosum; and higher reactive astrogliosis at the SBA lesion epicenter. Conversely, lambs with non-watertight SBA repair did not achieve the same level of neuroprotection (score of 4/4 in 1/7 lambs) compared with unrepaired lambs, with: a non-significant 86% (vs 14%) reversal of hindbrain herniation; high CSF leakage (43% vs 100%); no improvement in motor function; low brain neuron count in both the hippocampus and corpus callosum; and small spinal astroglial cell area at the epicenter. Both watertight layered repair and high (≥ 2/3) intraoperative skin-repair-quality score were associated with improved outcome, but the watertightness test and skin-repair-quality scale could not be used interchangeably due to result discrepancies. CONCLUSIONS Watertight layered fetal SBA repair is neuroprotective since it improves brain and spinal-cord structure and function in the fetal lamb model. This translational research has important clinical implications. A neurosurgical technique that achieves watertightness should be adopted in all fetal centers to improve neuroprotection. Future clinical studies could assess whether a high skin-repair-quality score (≥ 2/3) correlates with neuroprotection. © 2022 International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- L Joyeux
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium
- Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Leuven, Belgium
- Department of Obstetrics and Gynecology, Division of Woman and Child, Fetal Medicine Unit, University Hospitals Leuven, Leuven, Belgium
- Department of Pediatric Surgery, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA
| | - J van der Merwe
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium
- Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Leuven, Belgium
- Department of Obstetrics and Gynecology, Division of Woman and Child, Fetal Medicine Unit, University Hospitals Leuven, Leuven, Belgium
| | - M Aertsen
- Department of Radiology, University Hospitals Leuven, Leuven, Belgium
| | - P A Patel
- Radiology Department, Great Ormond Street Hospital for Children, NHS Foundation Trust, London, UK
| | - A Khatoun
- Exp ORL, Department of Neurosciences, KU Leuven, Leuven, Belgium
| | - M G M C Mori da Cunha
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium
| | - S De Vleeschauwer
- Animal Research Center, Biomedical Sciences, KU Leuven, Leuven, Belgium
| | - J Parra
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium
- BCNatal, Fetal Medicine Research Center, Hospital Clinic and Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
| | - E Danzer
- Division of Pediatric Surgery, Lucile Packard Children's Hospital, Stanford University, Stanford, CA, USA
| | - M McLaughlin
- Radiology Department, Great Ormond Street Hospital for Children, NHS Foundation Trust, London, UK
| | - D Stoyanov
- Wellcome/EPSRC Centre for Interventional and Surgical Sciences, University College London, London, UK
| | - T Vercauteren
- School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK
| | - S Ourselin
- School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK
| | - E Radaelli
- Department of Pathobiology, Ryan Veterinary Hospital, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, USA
| | - P de Coppi
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium
- Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Leuven, Belgium
- Department of Obstetrics and Gynecology, Division of Woman and Child, Fetal Medicine Unit, University Hospitals Leuven, Leuven, Belgium
- Specialist Neonatal and Pediatric Surgery Unit, Great Ormond Street Hospital, University College London Hospitals, NHS Foundation Trust, London, UK
| | - F Van Calenbergh
- Department of Neurosurgery, University Hospitals Leuven, Leuven, Belgium
| | - J Deprest
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium
- Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Leuven, Belgium
- Department of Obstetrics and Gynecology, Division of Woman and Child, Fetal Medicine Unit, University Hospitals Leuven, Leuven, Belgium
- Institute of Women's Health, University College London Hospitals, London, UK
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5
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Terlouw BR, Blin K, Navarro-Muñoz JC, Avalon NE, Chevrette MG, Egbert S, Lee S, Meijer D, Recchia MJ, Reitz Z, van Santen J, Selem-Mojica N, Tørring T, Zaroubi L, Alanjary M, Aleti G, Aguilar C, Al-Salihi SA, Augustijn H, Avelar-Rivas J, Avitia-Domínguez L, Barona-Gómez F, Bernaldo-Agüero J, Bielinski VA, Biermann F, Booth T, Carrion Bravo V, Castelo-Branco R, Chagas F, Cruz-Morales P, Du C, Duncan K, Gavriilidou A, Gayrard D, Gutiérrez-García K, Haslinger K, Helfrich EN, van der Hooft JJ, Jati A, Kalkreuter E, Kalyvas N, Kang K, Kautsar S, Kim W, Kunjapur A, Li YX, Lin GM, Loureiro C, Louwen JR, Louwen NL, Lund G, Parra J, Philmus B, Pourmohsenin B, Pronk LU, Rego A, Rex D, Robinson S, Rosas-Becerra L, Roxborough E, Schorn M, Scobie D, Singh K, Sokolova N, Tang X, Udwary D, Vigneshwari A, Vind K, Vromans SJM, Waschulin V, Williams S, Winter J, Witte T, Xie H, Yang D, Yu J, Zdouc M, Zhong Z, Collemare J, Linington R, Weber T, Medema M. MIBiG 3.0: a community-driven effort to annotate experimentally validated biosynthetic gene clusters. Nucleic Acids Res 2022; 51:D603-D610. [PMID: 36399496 PMCID: PMC9825592 DOI: 10.1093/nar/gkac1049] [Citation(s) in RCA: 69] [Impact Index Per Article: 34.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/07/2022] [Accepted: 10/21/2022] [Indexed: 11/19/2022] Open
Abstract
With an ever-increasing amount of (meta)genomic data being deposited in sequence databases, (meta)genome mining for natural product biosynthetic pathways occupies a critical role in the discovery of novel pharmaceutical drugs, crop protection agents and biomaterials. The genes that encode these pathways are often organised into biosynthetic gene clusters (BGCs). In 2015, we defined the Minimum Information about a Biosynthetic Gene cluster (MIBiG): a standardised data format that describes the minimally required information to uniquely characterise a BGC. We simultaneously constructed an accompanying online database of BGCs, which has since been widely used by the community as a reference dataset for BGCs and was expanded to 2021 entries in 2019 (MIBiG 2.0). Here, we describe MIBiG 3.0, a database update comprising large-scale validation and re-annotation of existing entries and 661 new entries. Particular attention was paid to the annotation of compound structures and biological activities, as well as protein domain selectivities. Together, these new features keep the database up-to-date, and will provide new opportunities for the scientific community to use its freely available data, e.g. for the training of new machine learning models to predict sequence-structure-function relationships for diverse natural products. MIBiG 3.0 is accessible online at https://mibig.secondarymetabolites.org/.
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Affiliation(s)
| | | | - Jorge C Navarro-Muñoz
- Bioinformatics Group, Wageningen University, Droevendaalsesteeg, 6708 PB Wageningen, The Netherlands,Westerdijk Fungal Biodiversity Institute, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - Nicole E Avalon
- Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0212, USA
| | - Marc G Chevrette
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL 32611, USA
| | - Susan Egbert
- Department of Chemistry, University of Manitoba, 66 Chancellors Cir, Winnipeg, MB R3T 2N2, Canada
| | - Sanghoon Lee
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada
| | - David Meijer
- Bioinformatics Group, Wageningen University, Droevendaalsesteeg, 6708 PB Wageningen, The Netherlands
| | - Michael J J Recchia
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada
| | - Zachary L Reitz
- Bioinformatics Group, Wageningen University, Droevendaalsesteeg, 6708 PB Wageningen, The Netherlands
| | - Jeffrey A van Santen
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada,Unnatural Products, 2161 Delaware Ave. Suite A, Santa Cruz, CA 95060, USA
| | | | - Thomas Tørring
- Department of Biological and Chemical Engineering, Aarhus University, Denmark
| | - Liana Zaroubi
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada
| | - Mohammad Alanjary
- Bioinformatics Group, Wageningen University, Droevendaalsesteeg, 6708 PB Wageningen, The Netherlands
| | - Gajender Aleti
- Food and Animal Sciences, Department of Agricultural and Environmental Sciences, Tennessee State University, Nashville, TN 37209, USA
| | - César Aguilar
- Department of Chemistry, Purdue University, West Lafayette, IN, USA
| | | | - Hannah E Augustijn
- Bioinformatics Group, Wageningen University, Droevendaalsesteeg, 6708 PB Wageningen, The Netherlands,Institute of Biology, Leiden University, Sylviusweg 72, 2333BE Leiden, The Netherlands
| | - J Abraham Avelar-Rivas
- Laboratorio Nacional de Genómica para la Biodiversidad-Unidad de Genómica Avanzada, Cinvestav. Km 9.6 Libramiento Norte Carretera Irapuato-León, CP 36824 Irapuato, Gto., México
| | - Luis A Avitia-Domínguez
- Institute of Biology, Leiden University, Sylviusweg 72, 2333BE Leiden, The Netherlands,Laboratorio Nacional de Genómica para la Biodiversidad-Unidad de Genómica Avanzada, Cinvestav. Km 9.6 Libramiento Norte Carretera Irapuato-León, CP 36824 Irapuato, Gto., México
| | - Francisco Barona-Gómez
- Institute of Biology, Leiden University, Sylviusweg 72, 2333BE Leiden, The Netherlands,Laboratorio Nacional de Genómica para la Biodiversidad-Unidad de Genómica Avanzada, Cinvestav. Km 9.6 Libramiento Norte Carretera Irapuato-León, CP 36824 Irapuato, Gto., México
| | - Jordan Bernaldo-Agüero
- Departamento de Microbiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Vincent A Bielinski
- Synthetic Biology and Bioenergy Group, J. Craig Venter Institute, La Jolla, CA 92037, USA
| | - Friederike Biermann
- Bioinformatics Group, Wageningen University, Droevendaalsesteeg, 6708 PB Wageningen, The Netherlands,Institute of Molecular Bio Science, Goethe-University Frankfurt, D-60438 Frankfurt am Main, Germany,LOEWE Center for Translational Biodiversity Genomics (TBG), Senckenberganlage 25, 60325 Frankfurt am Main, Germany
| | - Thomas J Booth
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kgs. Lyngby, Denmark,School of Molecular Sciences, University of Western Australia, Perth, Australia
| | - Victor J Carrion Bravo
- Institute of Biology, Leiden University, Sylviusweg 72, 2333BE Leiden, The Netherlands,Departamento de Microbiología, Instituto de Hortofruticultura Subtropical y Mediterránea ‘La Mayora’, Universidad de Málaga-Consejo Superior de Investigaciones Científicas (IHSM-UMA-CSIC), Universidad de Málaga, Málaga, Spain,Department of Microbial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, The Netherlands
| | - Raquel Castelo-Branco
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Portugal,Faculty of Sciences, University of Porto, 4150-179 Porto, Portugal
| | - Fernanda O Chagas
- Instituto de Pesquisas de Produtos Naturais Walter Mors, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-599, Brazil
| | - Pablo Cruz-Morales
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Chao Du
- Institute of Biology, Leiden University, Sylviusweg 72, 2333BE Leiden, The Netherlands
| | - Katherine R Duncan
- University of Strathclyde, Strathclyde Institute of Pharmacy and Biomedical Sciences, 141 Cathedral Street, Glasgow, G4 ORE UK
| | - Athina Gavriilidou
- Translational Genome Mining for Natural Products, Interfaculty Institute of Microbiology and Infection Medicine Tübingen (IMIT), University of Tübingen, Tübingen, Germany,Interfaculty Institute for Biomedical Informatics (IBMI), University of Tübingen, Tübingen, Germany
| | - Damien Gayrard
- Department of Molecular Microbiology, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, UK
| | - Karina Gutiérrez-García
- Department of Embryology, Carnegie Institution for Science, 3520 San Martin Drive, Baltimore, MD 21218, USA
| | - Kristina Haslinger
- Department of Chemical and Pharmaceutical Biology, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Eric J N Helfrich
- Institute of Molecular Bio Science, Goethe-University Frankfurt, D-60438 Frankfurt am Main, Germany,LOEWE Center for Translational Biodiversity Genomics (TBG), Senckenberganlage 25, 60325 Frankfurt am Main, Germany
| | - Justin J J van der Hooft
- Bioinformatics Group, Wageningen University, Droevendaalsesteeg, 6708 PB Wageningen, The Netherlands,Department of Biochemistry, University of Johannesburg, Auckland Park, Johannesburg 2006, South Africa
| | - Afif P Jati
- Indonesian Society of Bioinformatics And Biodiversity, Indonesia
| | - Edward Kalkreuter
- Department of Chemistry, University of Florida Scripps Biomedical Research, 110 Scripps Way, Jupiter, FL 33458, USA
| | - Nikolaos Kalyvas
- Westerdijk Fungal Biodiversity Institute, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - Kyo Bin Kang
- College of Pharmacy, Sookmyung Women's University, Seoul, South Korea
| | - Satria Kautsar
- Department of Chemistry, University of Florida Scripps Biomedical Research, 110 Scripps Way, Jupiter, FL 33458, USA
| | - Wonyong Kim
- Korean Lichen Research Institute, Sunchon National Universtiy, Suncheon, South Korea
| | - Aditya M Kunjapur
- Department of Chemical & Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA
| | - Yong-Xin Li
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R. China
| | - Geng-Min Lin
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Catarina Loureiro
- Laboratory of Microbiology, Wageningen University, Stippeneng 4, 6708WE, Wageningen, The Netherlands
| | - Joris J R Louwen
- Bioinformatics Group, Wageningen University, Droevendaalsesteeg, 6708 PB Wageningen, The Netherlands
| | - Nico L L Louwen
- Bioinformatics Group, Wageningen University, Droevendaalsesteeg, 6708 PB Wageningen, The Netherlands
| | - George Lund
- Sustainable Soils and Crops, Rothamsted Research, Harpenden, Hertfordshire, UK
| | - Jonathan Parra
- Instituto de Investigaciones Farmacéuticas (INIFAR), Facultad de Farmacia, Universidad de Costa Rica, San José, 11501-2060, Costa Rica,Centro de Investigaciones en Productos Naturales (CIPRONA), Universidad de Costa Rica, San José, 11501-2060, Costa Rica,Centro Nacional de Innovaciones Biotecnológicas (CENIBiot), CeNAT-CONARE, 1174-1200, San José, Costa Rica
| | - Benjamin Philmus
- Department of Pharmaceutical Sciences, Oregon State University, USA
| | - Bita Pourmohsenin
- Translational Genome Mining for Natural Products, Interfaculty Institute of Microbiology and Infection Medicine Tübingen (IMIT), University of Tübingen, Tübingen, Germany,Interfaculty Institute for Biomedical Informatics (IBMI), University of Tübingen, Tübingen, Germany
| | - Lotte J U Pronk
- Bioinformatics Group, Wageningen University, Droevendaalsesteeg, 6708 PB Wageningen, The Netherlands
| | - Adriana Rego
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Portugal,Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Portugal
| | | | - Serina Robinson
- Department of Environmental Microbiology, Eawag: Swiss Federal Institute for Aquatic Science and Technology, Überlandstrasse 133, CH-8600 Dübendorf, Switzerland
| | - L Rodrigo Rosas-Becerra
- Institute of Biology, Leiden University, Sylviusweg 72, 2333BE Leiden, The Netherlands,Laboratorio Nacional de Genómica para la Biodiversidad-Unidad de Genómica Avanzada, Cinvestav. Km 9.6 Libramiento Norte Carretera Irapuato-León, CP 36824 Irapuato, Gto., México
| | - Eve T Roxborough
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Michelle A Schorn
- Laboratory of Microbiology, Wageningen University, Stippeneng 4, 6708WE, Wageningen, The Netherlands
| | - Darren J Scobie
- University of Strathclyde, Strathclyde Institute of Pharmacy and Biomedical Sciences, 141 Cathedral Street, Glasgow, G4 ORE UK
| | - Kumar Saurabh Singh
- Bioinformatics Group, Wageningen University, Droevendaalsesteeg, 6708 PB Wageningen, The Netherlands
| | - Nika Sokolova
- Department of Chemical and Pharmaceutical Biology, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Xiaoyu Tang
- Institute of Chemical Biology, Shenzhen Bay Laboratory, Shenzhen 518132, China
| | - Daniel Udwary
- DOE Joint Genome Institute, Lawrence Berkeley National Lab, Berkeley, CA, USA
| | | | - Kristiina Vind
- Host-Microbe Interactomics Group, Wageningen University, 6708 WD Wageningen, The Netherlands,NAICONS Srl, 20139 Milan, Italy
| | - Sophie P J M Vromans
- Bioinformatics Group, Wageningen University, Droevendaalsesteeg, 6708 PB Wageningen, The Netherlands
| | - Valentin Waschulin
- School of Life Sciences, The University of Warwick, Coventry CV4 7AL, UK
| | - Sam E Williams
- School of Biochemistry, University of Bristol, University Walk, Bristol BS8 1TD, UK
| | - Jaclyn M Winter
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, UT 84112, USA
| | - Thomas E Witte
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Canada
| | - Huali Xie
- Bioinformatics Group, Wageningen University, Droevendaalsesteeg, 6708 PB Wageningen, The Netherlands,Key laboratory of Detection for Biotoxins, Ministry of Agriculture and Rural Affairs and Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430061, China
| | - Dong Yang
- Department of Chemistry and Natural Products Discovery Center, UF Scripps Biomedical Research, University of Florida, Jupiter, FL 33458, USA
| | - Jingwei Yu
- SUSTech-PKU Institute of Plant and Food Science, Department of Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Mitja Zdouc
- Bioinformatics Group, Wageningen University, Droevendaalsesteeg, 6708 PB Wageningen, The Netherlands
| | - Zheng Zhong
- Laboratory of Microbiology, Wageningen University, Stippeneng 4, 6708WE, Wageningen, The Netherlands
| | - Jérôme Collemare
- Westerdijk Fungal Biodiversity Institute, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - Roger G Linington
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada
| | - Tilmann Weber
- Correspondence may also be addressed to Tilmann Weber. Tel: +45 24896132;
| | - Marnix H Medema
- To whom correspondence should be addressed. Tel: +31 317484706;
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Feeney MA, Newitt JT, Addington E, Algora-Gallardo L, Allan C, Balis L, Birke AS, Castaño-Espriu L, Charkoudian LK, Devine R, Gayrard D, Hamilton J, Hennrich O, Hoskisson PA, Keith-Baker M, Klein JG, Kruasuwan W, Mark DR, Mast Y, McHugh RE, McLean TC, Mohit E, Munnoch JT, Murray J, Noble K, Otani H, Parra J, Pereira CF, Perry L, Pintor-Escobar L, Pritchard L, Prudence SMM, Russell AH, Schniete JK, Seipke RF, Sélem-Mojica N, Undabarrena A, Vind K, van Wezel GP, Wilkinson B, Worsley SF, Duncan KR, Fernández-Martínez LT, Hutchings MI. ActinoBase: tools and protocols for researchers working on Streptomyces and other filamentous actinobacteria. Microb Genom 2022; 8. [PMID: 35775972 PMCID: PMC9455695 DOI: 10.1099/mgen.0.000824] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Actinobacteria is an ancient phylum of Gram-positive bacteria with a characteristic high GC content to their DNA. The ActinoBase Wiki is focused on the filamentous actinobacteria, such as Streptomyces species, and the techniques and growth conditions used to study them. These organisms are studied because of their complex developmental life cycles and diverse specialised metabolism which produces many of the antibiotics currently used in the clinic. ActinoBase is a community effort that provides valuable and freely accessible resources, including protocols and practical information about filamentous actinobacteria. It is aimed at enabling knowledge exchange between members of the international research community working with these fascinating bacteria. ActinoBase is an anchor platform that underpins worldwide efforts to understand the ecology, biology and metabolic potential of these organisms. There are two key differences that set ActinoBase apart from other Wiki-based platforms: [1] ActinoBase is specifically aimed at researchers working on filamentous actinobacteria and is tailored to help users overcome challenges working with these bacteria and [2] it provides a freely accessible resource with global networking opportunities for researchers with a broad range of experience in this field.
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Affiliation(s)
- Morgan Anne Feeney
- University of Strathclyde, Strathclyde Institute of Pharmacy and Biomedical Sciences, Glasgow, G4 0RE, UK
| | - Jake Terry Newitt
- Department of Molecular Microbiology, John Innes Centre, Norwich, NR4 7UH, UK
| | - Emily Addington
- University of Strathclyde, Strathclyde Institute of Pharmacy and Biomedical Sciences, Glasgow, G4 0RE, UK
| | - Lis Algora-Gallardo
- University of Strathclyde, Strathclyde Institute of Pharmacy and Biomedical Sciences, Glasgow, G4 0RE, UK
| | - Craig Allan
- Swansea University Institute of Life Science, College of Medicine, Swansea, Wales, UK
| | - Lucas Balis
- Department of Molecular Microbiology, John Innes Centre, Norwich, NR4 7UH, UK
| | - Anna S Birke
- University of Strathclyde, Strathclyde Institute of Pharmacy and Biomedical Sciences, Glasgow, G4 0RE, UK
| | - Laia Castaño-Espriu
- University of Strathclyde, Strathclyde Institute of Pharmacy and Biomedical Sciences, Glasgow, G4 0RE, UK
| | | | - Rebecca Devine
- Department of Molecular Microbiology, John Innes Centre, Norwich, NR4 7UH, UK
| | - Damien Gayrard
- Department of Molecular Microbiology, John Innes Centre, Norwich, NR4 7UH, UK
| | - Jacob Hamilton
- Department of Molecular Microbiology, John Innes Centre, Norwich, NR4 7UH, UK
| | - Oliver Hennrich
- Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures GmbH Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | - Paul A Hoskisson
- University of Strathclyde, Strathclyde Institute of Pharmacy and Biomedical Sciences, Glasgow, G4 0RE, UK
| | - Molly Keith-Baker
- University of Strathclyde, Strathclyde Institute of Pharmacy and Biomedical Sciences, Glasgow, G4 0RE, UK
| | | | - Worarat Kruasuwan
- Division of Bioinformatics and Data Management for Research, Research Group and Research Network Division, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - David R Mark
- University of Strathclyde, Strathclyde Institute of Pharmacy and Biomedical Sciences, Glasgow, G4 0RE, UK
| | - Yvonne Mast
- Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures GmbH Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | - Rebecca E McHugh
- University of Strathclyde, Strathclyde Institute of Pharmacy and Biomedical Sciences, Glasgow, G4 0RE, UK
| | - Thomas C McLean
- Department of Molecular Microbiology, John Innes Centre, Norwich, NR4 7UH, UK
| | - Elmira Mohit
- University of Strathclyde, Strathclyde Institute of Pharmacy and Biomedical Sciences, Glasgow, G4 0RE, UK
| | - John T Munnoch
- University of Strathclyde, Strathclyde Institute of Pharmacy and Biomedical Sciences, Glasgow, G4 0RE, UK
| | - Jordan Murray
- Department of Physics, SUPA, University of Strathclyde, Glasgow, G4 0NG, UK
| | - Katie Noble
- Department of Molecular Microbiology, John Innes Centre, Norwich, NR4 7UH, UK
| | - Hiroshi Otani
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.,Lawrence Berkeley National Laboratory, Environmental Genomics and Systems Biology Division, Berkeley, CA 94720, USA
| | - Jonathan Parra
- University of Strathclyde, Strathclyde Institute of Pharmacy and Biomedical Sciences, Glasgow, G4 0RE, UK
| | - Camila F Pereira
- Department of Insect Symbiosis, Max Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, 07745 Jena, Germany
| | - Louisa Perry
- Department of Molecular Microbiology, John Innes Centre, Norwich, NR4 7UH, UK
| | | | - Leighton Pritchard
- University of Strathclyde, Strathclyde Institute of Pharmacy and Biomedical Sciences, Glasgow, G4 0RE, UK
| | - Samuel M M Prudence
- School of Biological and Behavioral Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, UK
| | | | - Jana K Schniete
- Biology Department, Edge Hill University, St Helens Road, Ormskirk, L39 4QP, UK
| | - Ryan F Seipke
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK.,Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, UK
| | - Nelly Sélem-Mojica
- Universidad Nacional Autónoma de México, Centro de Ciencias Matemáticas, en Morelia, Michoacán, Mexico
| | - Agustina Undabarrena
- Departamento de Química & Centro de Biotecnología Daniel Alkalay Lowitt, Universidad Técnica Federico Santa María, Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Valparaíso, 2340000, Chile
| | - Kristiina Vind
- Host-Microbe Interactomics Group, Wageningen University, 6708 WD Wageningen, The Netherlands
| | - Gilles P van Wezel
- Microbial Biotechnology, Institute of Biology, Leiden University, Rapenburg, The Netherlands
| | - Barrie Wilkinson
- Department of Molecular Microbiology, John Innes Centre, Norwich, NR4 7UH, UK
| | - Sarah F Worsley
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK
| | - Katherine R Duncan
- University of Strathclyde, Strathclyde Institute of Pharmacy and Biomedical Sciences, Glasgow, G4 0RE, UK
| | | | - Matthew I Hutchings
- Department of Molecular Microbiology, John Innes Centre, Norwich, NR4 7UH, UK
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7
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Lluís N, Parra J, Villodre C, Zapater P, Jalali A, Cantó M, Mena L, Ramia JM, Lluís F. Prediction of peritoneal soiling in acute appendicitis with simple clinical and laboratory data. Prospective, multicenter, cohort study of 2,645 adult patients nationwide. Int J Surg 2022; 104:106741. [PMID: 35772594 DOI: 10.1016/j.ijsu.2022.106741] [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: 03/06/2022] [Revised: 05/24/2022] [Accepted: 06/16/2022] [Indexed: 10/17/2022]
Abstract
BACKGROUND AND AIMS In order to facilitate the preoperative prediction of complicated appendicitis, we propose a complementary approach by selecting an endpoint defined by the intraoperative finding of peritoneal soiling (PS). METHODS Over a 6-month period, 38 centers (5% of all public hospitals) attending emergency general surgery patients on a 24-hour, 7-days a week basis, enrolled consecutive adult patients requiring appendectomy. Patients were stratified according to the absence or the finding of PS during the surgical procedure. RESULTS A total of 2645 patients were included; median age (IQR) was 35 (22-51) years, 44.3% were female. The laparoscopic approach was used in 70.8% of appendectomies. In a third of patients (31.7%), there was PS with pus around the appendix, or bowel contents, free pus, or blood in the peritoneal cavity. To develop the prediction model, 1764 patients were randomly selected for the derivation cohort and the remaining 881 patients were assigned to the validation cohort. On multivariable logistic regression analysis of all patients, two clinical variables (age, and pulse) and three laboratory variables (serum urea, serum sodium, and white blood cell count) were individually associated (P < .05) with a greater probability of having PS (Hosmer-Lemeshow chi, 1.63; P = .99; C-statistic, 0.7). Based on the multivariable regression model, both static and dynamic nomograms were developed for the prediction of PS in patients with acute appendicitis. CONCLUSIONS The entry of simple clinical and laboratory variables in the dynamic nomogram may be useful in guiding the initial management of patients with acute appendicitis in resource-limited settings.
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Affiliation(s)
- N Lluís
- Hepatobiliary and Pancreas Surgery, Department of Surgical Oncology, Miami Cancer Institute, Miami, FL, USA
| | - J Parra
- Department of Surgery, General University Hospital of Alicante, Alicante, Spain; Institute for Health and Biomedical Research of Alicante, ISABIAL, Alicante, Spain
| | - C Villodre
- Department of Surgery, General University Hospital of Alicante, Alicante, Spain; Institute for Health and Biomedical Research of Alicante, ISABIAL, Alicante, Spain.
| | - P Zapater
- Department of Clinical Pharmacology, General University Hospital of Alicante, Alicante, Spain; Institute for Health and Biomedical Research of Alicante, ISABIAL, Alicante, Spain
| | - A Jalali
- School of Mathematical Sciences, University College Cork, Cork, Ireland
| | - M Cantó
- Computing, BomhardIP, Alicante, Spain; Institute for Health and Biomedical Research of Alicante, ISABIAL, Alicante, Spain
| | - L Mena
- Department of Clinical Documentation, General University Hospital of Alicante, Alicante, Spain; Institute for Health and Biomedical Research of Alicante, ISABIAL, Alicante, Spain
| | - J M Ramia
- Department of Surgery, General University Hospital of Alicante, Alicante, Spain; Institute for Health and Biomedical Research of Alicante, ISABIAL, Alicante, Spain
| | - F Lluís
- Department of Surgery, General University Hospital of Alicante, Alicante, Spain; Institute for Health and Biomedical Research of Alicante, ISABIAL, Alicante, Spain
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Parra J, Duncan KR. Multi-omics analysis of the specialised metabolism of two novel Pseudonocardia spp. isolated from the deep Southern Ocean. Access Microbiol 2022. [DOI: 10.1099/acmi.ac2021.po0241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Multidrug-resistant pathogens have become a global threat. In this context, filamentous Actinobacteria has been proven to be an exceptional source of antimicrobial metabolites. In particular, rare actinomycetes isolated from marine environments have been proposed as a potential source of yet untapped specialised metabolites. In this study, two novel species, Pseudonocardia abyssalis sp. nov. and Pseudonocardia oceani sp. nov, isolated from deep Southern Ocean sediments are described, both in terms of their phenotypic and genomic characterization. Furthermore, the genomic architecture, with a focus on Biosynthetic Gene Cluster (BGC), across eight strains belonging to the two novel species were investigated. A total of 14 Gene Cluster Families (GCF) were identified, of which five GCFs comprise BGCs from both species, and nine were specific to each species. Moreover, a correlation of GCFs to phylogeny was observed. Following genome analysis, a comparative mass-spectrometry based metabolomics analysis was carried out with one strain from each new species, as well as Pseudonocardia ammonioxydans and Pseudonocardia sediminis, also of marine origin. The metabolomics profiles agreed with the GCF distribution, where a group of ubiquitous metabolites were produced by both new Pseudonocardia spp., while groups of species-specific metabolites were also detected. This metabolic-repertoire was found to be elicitated through the addition of N-acetyl glucosamine (GlcNAc), revealing chemically-inducible bioactivity against the fungi Candida albicas and multidrug-resistant Candida auris. These results showcase the power of a combined genomic-metabolomics approach to investigate rare-actinomycetes from understudied locations and have uncovered a wealth of both biosynthetic and chemical diversity for further investigation.
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Affiliation(s)
- Jonathan Parra
- Strathclyde Institute of Pharmacy and Biomedical Sciences, United Kingdom
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Chmielak B, Suckow S, Parra J, Duarte VC, Mengual T, Piqueras MA, Giesecke AL, Lemme MC, Sanchis P. High-efficiency grating coupler for an ultralow-loss Si 3N 4-based platform. Opt Lett 2022; 47:2498-2501. [PMID: 35561384 DOI: 10.1364/ol.455078] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 04/11/2022] [Indexed: 06/15/2023]
Abstract
Integrated silicon nitride waveguides of 100 nm height can achieve ultralow propagation losses below 0.1 dB/cm at the 1550 nm wavelength band but lack the scattering strength to form efficient grating couplers. An enhanced grating coupler design based on an amorphous silicon layer on top of silicon nitride is proposed and demonstrated to improve the directionality of the coupler. The fabrication process is optimized for a self-alignment process between the amorphous silicon and silicon nitride layers without increasing waveguide losses. Experimental coupling losses of 5 dB and a 3 dB bandwidth of 75 nm are achieved with both regular and focusing designs.
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10
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Benarroche D, Paladini A, Grobet-Jeandin E, Vaessen C, Parra J, Seisen T, Pinar U, Roupret M. Robotic vs. open simple prostatectomy for benign prostatic hyperplasia in large glands: Single-centre study. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00962-9] [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: 11/25/2022]
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11
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van Santen JA, Poynton EF, Iskakova D, McMann E, Alsup T, Clark TN, Fergusson CH, Fewer DP, Hughes AH, McCadden CA, Parra J, Soldatou S, Rudolf JD, Janssen EML, Duncan KR, Linington RG. The Natural Products Atlas 2.0: a database of microbially-derived natural products. Nucleic Acids Res 2022; 50:D1317-D1323. [PMID: 34718710 PMCID: PMC8728154 DOI: 10.1093/nar/gkab941] [Citation(s) in RCA: 88] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/27/2021] [Accepted: 10/01/2021] [Indexed: 12/15/2022] Open
Abstract
Within the natural products field there is an increasing emphasis on the study of compounds from microbial sources. This has been fuelled by interest in the central role that microorganisms play in mediating both interspecies interactions and host-microbe relationships. To support the study of natural products chemistry produced by microorganisms we released the Natural Products Atlas, a database of known microbial natural products structures, in 2019. This paper reports the release of a new version of the database which includes a full RESTful application programming interface (API), a new website framework, and an expanded database that includes 8128 new compounds, bringing the total to 32 552. In addition to these structural and content changes we have added full taxonomic descriptions for all microbial taxa and have added chemical ontology terms from both NP Classifier and ClassyFire. We have also performed manual curation to review all entries with incomplete configurational assignments and have integrated data from external resources, including CyanoMetDB. Finally, we have improved the user experience by updating the Overview dashboard and creating a dashboard for taxonomic origin. The database can be accessed via the new interactive website at https://www.npatlas.org.
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Affiliation(s)
- Jeffrey A van Santen
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
| | - Ella F Poynton
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
| | - Dasha Iskakova
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
| | - Emily McMann
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
| | - Tyler A Alsup
- Department of Chemistry, University of Florida, Gainesville, FL 32611, USA
| | - Trevor N Clark
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
| | - Claire H Fergusson
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
| | - David P Fewer
- Department of Microbiology, University of Helsinki, 00014 Helsinki, Finland
| | - Alison H Hughes
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, Glasgow G4 0RE, UK
| | - Caitlin A McCadden
- Department of Chemistry, University of Florida, Gainesville, FL 32611, USA
| | - Jonathan Parra
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, Glasgow G4 0RE, UK
| | - Sylvia Soldatou
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, UK
| | - Jeffrey D Rudolf
- Department of Chemistry, University of Florida, Gainesville, FL 32611, USA
| | - Elisabeth M-L Janssen
- Department of Environmental Chemistry, Swiss Federal Institute of Aquatic Science and Technology (Eawag), 8600 Duebendorf, Switzerland
| | - Katherine R Duncan
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, Glasgow G4 0RE, UK
| | - Roger G Linington
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
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12
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Villodre C, Taccogna L, Zapater P, Cantó M, Mena L, Ramia JM, Lluís F, Afonso N, Aguilella V, Aguiló J, Alados JC, Alberich M, Apio AB, Balongo R, Bra E, Bravo-Gutiérrez A, Briceño FJ, Cabañas J, Cánovas G, Caravaca I, Carbonell S, Carrera-Dacosta E, Castro EE, Caula C, Choolani-Bhojwani E, Codina A, Corral S, Cuenca C, Curbelo-Peña Y, Delgado-Morales MM, Delgado-Plasencia L, Doménech E, Estévez AM, Feria AM, Gascón-Domínguez MA, Gianchandani R, González C, Hevia RJ, González MA, Hidalgo JM, Lainez M, Lluís N, López F, López-Fernández J, López-Ruíz JA, Lora-Cumplido P, Madrazo Z, Marchena J, de la Cuadra MB, Martín S, Casas MI, Martínez P, Mena-Mateos A, Morales-García D, Mulas C, Muñoz-Forner E, Naranjo A, Navarro-Sánchez A, Oliver I, Ortega I, Ortega-Higueruelo R, Ortega-Ruiz S, Osorio J, Padín MH, Pamies JJ, Paredes M, Pareja-Ciuró F, Parra J, Pérez-Guarinós CV, Pérez-Saborido B, Pintor-Tortolero J, Plua-Muñiz K, Rey M, Rodríguez I, Ruiz C, Ruíz R, Ruiz S, Sánchez A, Sánchez D, Sánchez R, Sánchez-Cabezudo F, Sánchez-Santos R, Santos J, Serrano-Paz MP, Soria-Aledo V, Tallón-Aguilar L, Valdivia-Risco JH, Vallverdú-Cartié H, Varela C, Villar-Del-Moral J, Zambudio N. Simplified risk-prediction for benchmarking and quality improvement in emergency general surgery. Prospective, multicenter, observational cohort study. Int J Surg 2022; 97:106168. [PMID: 34785344 DOI: 10.1016/j.ijsu.2021.106168] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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] [Received: 09/09/2021] [Revised: 10/24/2021] [Accepted: 11/03/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND AIMS Emergency General Surgery (EGS) conditions account for millions of deaths worldwide, yet it is practiced without benchmarking-based quality improvement programs. The aim of this observational, prospective, multicenter, nationwide study was to determine the best benchmark cutoff points in EGS, as a reference to guide improvement measures. METHODS Over a 6-month period, 38 centers (5% of all public hospitals) attending EGS patients on a 24-h, 7-days a week basis, enrolled consecutive patients requiring an emergent/urgent surgical procedure. Patients were stratified into cohorts of low (i.e., expected morbidity risk <33%), middle and high risk using the novel m-LUCENTUM calculator. RESULTS A total of 7258 patients were included; age (mean ± SD) was 51.1 ± 21.5 years, 43.2% were female. Benchmark cutoffs in the low-risk cohort (5639 patients, 77.7% of total) were: use of laparoscopy ≥40.9%, length of hospital stays ≤3 days, any complication within 30 days ≤ 17.7%, and 30-day mortality ≤1.1%. The variables with the greatest impact were septicemia on length of hospital stay (21 days; adjusted beta coefficient 16.8; 95% CI: 15.3 to 18.3; P < .001), and respiratory failure on mortality (risk-adjusted population attributable fraction 44.6%, 95% CI 29.6 to 59.6, P < .001). Use of laparoscopy (odds ratio 0.764, 95% CI 0.678 to 0.861; P < .001), and intraoperative blood loss (101-500 mL: odds ratio 2.699, 95% CI 2.152 to 3.380; P < .001; and 500-1000 mL: odds ratio 2.875, 95% CI 1.403 to 5.858; P = .013) were associated with increased morbidity. CONCLUSIONS This study offers, for the first time, clinically-based benchmark values in EGS and identifies measures for improvement.
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Affiliation(s)
- C Villodre
- Hospital Gran Canaria Doctor Negrín, Las Palmas de Gran Canarias, Spain Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain Hospital Lluís Alcanyís de Xàtiva, Valencia, Spain Hospital Universitario de Badajoz, Badajoz, Spain Hospital Universitario de Bellvitge, Barcelona, Spain Hospital Marina Baixa, Alicante, Spain Hospital Juan Ramón Jiménez, Infanta Elena, Huelva, Spain Hospital Infanta Cristina, Parla, Madrid, Spain Hospital Universitario de Canarias, Tenerife, Spain Hospital Reina Sofía de Córdoba, Córdoba, Spain H. Ramón y Cajal, Madrid, Spain Hospital Parc Taulí de Sabadell, Barcelona, Spain Hospital General Universitario de Alicante, Alicante, Spain Complejo Hospitalario Universitario de Vigo, Hospital Pontevedra, Spain Hospital Trueta de Girona, Girona, Spain Hospital Universitario Rio Hortega, Valladolid, Spain Hospital Mutua Terrassa, Barcelona, Spain Consorci Hospitalari de Vic, Barcelona, Spain POVISA, Pontevedra, Spain Hospital Universitario Nuestra Señora de Candelaria, Tenerife, Spain Hospital Universitario Basurto, Bizkaia, Spain Hospital Universitario Marqués de Valdecilla, Santander, Spain Hospital de Viladecans, Barcelona, Spain Hospital Clínico de Valencia, Valencia, Spain Hospital Universitario Insular de Gran Canaria, Las Palmas, Spain Hospital Vírgen de la Macarena, Sevilla, Spain Hospital Cabueñes, Gijón, Spain Complejo Hospitalario de Jaén, Jaén, Spain Hospital Universitari Sant Joan de Reus, Tarragona, Spain Hospital Universitario Infanta Sofía, Madrid, Spain Complejo Hospitalario Torrecárdenas, Almería, Spain Hospital Sant Pau i Santa Tecla, Tarragona, Spain Hospital General Rafael Méndez de Lorca, Murcia, Spain Hospital Vírgen del Rocío, Sevilla, Spain Hospital Morales Meseguer, Murcia, Spain Hospital del Vinalopó, Alicante, Spain Hospital Universitario del Vinalopó, Alicante, Spain Hospital Universitario Virgen de las Nieves, Granada, Spain Department of Surgery, General University Hospital of Alicante, Alicante, Spain Department of Clinical Pharmacology, General University Hospital of Alicante, Alicante, Spain Computing, BomhardIP, Alicante, Spain Department of Clinical Documentation, General University Hospital of Alicante, Alicante, Spain Institute of Health and Biomedical Research of Alicante, ISABIAL, Alicante, Spain
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Benarroche D, Rouprêt M, Chartier-Kastler E, Pinar U, Vaessen C, Seisen T, Parra J. Résultats de l’adénomectomie voie haute par voie laparoscopique robot-assistée : analyse monocentrique. Prog Urol 2021. [DOI: 10.1016/j.purol.2021.08.050] [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: 11/16/2022]
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Undabarrena A, Pereira CF, Kruasuwan W, Parra J, Sélem-Mojica N, Vind K, Schniete JK. Integrating perspectives in actinomycete research: an ActinoBase review of 2020-21. Microbiology (Reading) 2021; 167:001084. [PMID: 34515628 PMCID: PMC8549240 DOI: 10.1099/mic.0.001084] [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] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 07/26/2021] [Indexed: 12/12/2022]
Abstract
Last year ActinoBase, a Wiki-style initiative supported by the UK Microbiology Society, published a review highlighting the research of particular interest to the actinomycete community. Here, we present the second ActinoBase review showcasing selected reports published in 2020 and early 2021, integrating perspectives in the actinomycete field. Actinomycetes are well-known for their unsurpassed ability to produce specialised metabolites, of which many are used as therapeutic agents with antibacterial, antifungal, or immunosuppressive activities. Much research is carried out to understand the purpose of these metabolites in the environment, either within communities or in host interactions. Moreover, many efforts have been placed in developing computational tools to handle big data, simplify experimental design, and find new biosynthetic gene cluster prioritisation strategies. Alongside, synthetic biology has provided advances in tools to elucidate the biosynthesis of these metabolites. Additionally, there are still mysteries to be uncovered in understanding the fundamentals of filamentous actinomycetes' developmental cycle and regulation of their metabolism. This review focuses on research using integrative methodologies and approaches to understand the bigger picture of actinomycete biology, covering four research areas: i) technology and methodology; ii) specialised metabolites; iii) development and regulation; and iv) ecology and host interactions.
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Affiliation(s)
- Agustina Undabarrena
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química & Centro de Biotecnología Daniel Alkalay Lowitt, Universidad Técnica Federico Santa María, Valparaíso 2340000, Chile
| | - Camila F Pereira
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Worarat Kruasuwan
- Microbial Cell Factory Research Team, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
| | - Jonathan Parra
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, G4 0RE, UK
| | - Nelly Sélem-Mojica
- Centro de Ciencias Matemáticas, Antigua Carretera a Pátzcuaro # 8701, Col. Ex Hacienda San José de la Huerta, Morelia C.P. 58089, Michoacán, México
| | - Kristiina Vind
- NAICONS Srl, Viale Ortles 22/4, 20139 Milan (MI), Italy
- Host-Microbe Interactomics Group, Wageningen University, De Elst 1 6708 WD, Wageningen, Netherlands
| | - Jana K. Schniete
- Biology, Edge Hill University, St Helens Road, Ormskirk, L39 4QP, UK
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Petri E, Virto R, Mottura M, Parra J. Comparison of Peracetic Acid and Chlorine Effectiveness during Fresh-Cut Vegetable Processing at Industrial Scale. J Food Prot 2021; 84:1592-1602. [PMID: 34015109 DOI: 10.4315/jfp-20-448] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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] [Received: 11/09/2020] [Accepted: 05/16/2021] [Indexed: 11/11/2022]
Abstract
ABSTRACT This study was conducted to compare the efficacy of two sanitizing agents, chlorine and peracetic acid (PAA), in reducing spoilage and pathogenic microorganisms and disinfection by-products in the washing stage of three types of minimally processed vegetables: iceberg lettuce, carrots, and baby leaves. These fresh-cut products are consumed uncooked; thus, proper sanitation is essential in preventing foodborne illness outbreaks. The comparison was done at industrial scale with equipment already used in the fresh-cut industry and with washers designed and manufactured for this purpose. Results showed that for washing water hygiene and final product microbial quality, the use of PAA or chlorine had similar efficacy. Different scenarios combining PAA, chlorine, and water were tested, simulating the current industrial processes for each of the tested vegetables. Overall, results confirmed that the use of a sanitizer, PAA or chlorine, in the washing water is effective for the prevention of cross-contamination during the washing process and hence for produce food safety. For final product microbiological quality and shelf life, the use of chlorine or PAA showed no significant differences in lettuce or baby leaves. Chlorinated disinfection by-products in processing water were not formed in significant amounts when washing water was treated with PAA in all scenarios and for all tested vegetables, whereas washing with chlorine (80 mg/L) generated important amounts of trihalomethanes, chlorates, and chlorites. Although chlorates and chlorites were always below the recommended levels or legal limits established for drinking water, trihalomethanes exceeded the legal limits. For perchlorates, values were below the quantification limit in all scenarios. Our results show that PAA is a reliable alternative to chlorine disinfection strategies in the fresh-cut industry. HIGHLIGHTS
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Affiliation(s)
- E Petri
- R&D&I Area, Centro Nacional de Tecnología y Seguridad Alimentaria (CNTA), Carretera NA-134, Km. 53, 31570 Navarra, Spain
| | - R Virto
- R&D&I Area, Centro Nacional de Tecnología y Seguridad Alimentaria (CNTA), Carretera NA-134, Km. 53, 31570 Navarra, Spain
| | - M Mottura
- Productos Citrosol S.A., Partida Alameda, Parcela C, 46721 Potries, Valencia, Spain
| | - J Parra
- Productos Citrosol S.A., Partida Alameda, Parcela C, 46721 Potries, Valencia, Spain
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Parra J, Soldatou S, Rooney LM, Duncan KR. Pseudonocardia abyssalis sp. nov. and Pseudonocardia oceani sp. nov., two novel actinomycetes isolated from the deep Southern Ocean. Int J Syst Evol Microbiol 2021; 71:005032. [PMID: 34582326 PMCID: PMC8549268 DOI: 10.1099/ijsem.0.005032] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 08/20/2021] [Indexed: 01/25/2023] Open
Abstract
The actinomycetes strains KRD168T and KRD185T were isolated from sediments collected from the deep Southern Ocean and, in this work, they are described as representing two novel species of the genus Pseudonocardia through a polyphasic approach. Despite sharing >99 % 16S rRNA gene sequence similarity with other members of the genus, comparative genomic analysis allowed species delimitation based on average nucleotide identity and digital DNA-DNA hybridization. The KRD168T genome is characterized by a size of 6.31 Mbp and a G+C content of 73.44 mol%, while the KRD185T genome has a size of 6.82 Mbp and a G+C content of 73.98 mol%. Both strains contain meso-diaminopimelic acid as the diagnostic diamino acid, glucose as the major whole-cell sugar, MK-8(H4) as a major menaquinone and iso-branched hexadecanoic acid as a major fatty acid. Biochemical and fatty acid analyses also revealed differences between these strains and their phylogenetic neighbours, supporting their status as distinct species. The names Pseudonocardia abyssalis sp. nov. (type strain KRD168T=DSM 111918T=NCIMB 15270T) and Pseudonocardia oceani (type strain KRD185T=DSM 111919T=NCIMB 15269T) are proposed.
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Affiliation(s)
- Jonathan Parra
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde,, Glasgow G4 0RE, UK
| | - Sylvia Soldatou
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde,, Glasgow G4 0RE, UK
- Present address: School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen AB10 7GJ, UK
| | - Liam M. Rooney
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde,, Glasgow G4 0RE, UK
- Present address: Institute of Biological Chemistry, Biophysics and Bioengineering, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK
| | - Katherine R. Duncan
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde,, Glasgow G4 0RE, UK
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Filfilan A, Anract J, Chartier-Kastler E, Parra J, Vaessen C, de La Taille A, Roupret M, Pinar U. Positive environmental impact of remote teleconsultation in urology during the COVID-19 pandemic in a highly populated area. Prog Urol 2021; 31:1133-1138. [PMID: 34454847 PMCID: PMC8387203 DOI: 10.1016/j.purol.2021.08.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 07/24/2021] [Accepted: 08/07/2021] [Indexed: 11/19/2022]
Abstract
Introduction Greenhouse gas (GHG) emissions are a serious environmental issue. The healthcare sector is an important emitter of GHGs. Our aim was to assess the environmental cost of teleconsultations in urology compared to face-to-face consultations. Materials and methods Prospective study of all patients who had a remote teleconsultation over a 2-week period during COVID-19 pandemic. Main outcome was the reduction in CO2e emissions related to teleconsultation compared to face-to-face consultation and was calculated as: total teleconsultation CO2e emissions–total face-to-face consultation CO2e emissions. Secondary outcome measures were the reduction in travel distance and travel time related to teleconsultation. Results Eighty patients were included. Face-to-face consultations would have resulted in 6699 km (4162 miles) of travel (83.7 km (52 miles) per patient). Cars were the usual means of transport. CO2e avoided due to lack of travel was calculated at 1.1 tonnes. Teleconsultation was responsible for 1.1 kg CO2e while face-to-face consultation emitted 0.5 kg of CO2e. Overall, the total reduction in GHGs with teleconsultation was 1141 kg CO2e, representing a 99% decrease in emissions. Total savings on transport were 974 € and savings on travel time were 112 h (1.4 h/patient). Conclusions Teleconsultation reduces the environmental impact of face-to-face consultations. The use of teleconsultation in our urology departments resulted in the avoidance of more than 6000 km of travel, equivalent to a reduction of 1.1 tonnes of CO2e. Teleconsultation should be considered for specific indications as the healthcare system attempts to become greener. Level of evidence 3.
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Affiliation(s)
- A Filfilan
- Sorbonne University, GRC 5 Predictive Onco-Uro, AP-HP, Urology, Pitie-Salpetriere Hospital, 75013 Paris, France
| | - J Anract
- Sorbonne University, GRC 5 Predictive Onco-Uro, AP-HP, Urology, Pitie-Salpetriere Hospital, 75013 Paris, France
| | - E Chartier-Kastler
- Sorbonne University, GRC 5 Predictive Onco-Uro, AP-HP, Urology, Pitie-Salpetriere Hospital, 75013 Paris, France
| | - J Parra
- Sorbonne University, GRC 5 Predictive Onco-Uro, AP-HP, Urology, Pitie-Salpetriere Hospital, 75013 Paris, France
| | - C Vaessen
- Sorbonne University, GRC 5 Predictive Onco-Uro, AP-HP, Urology, Pitie-Salpetriere Hospital, 75013 Paris, France
| | - A de La Taille
- Henri Mondor hôpital, urology, hôpitaux universitaires Henri Mondor, AP-HP, 94010 Créteil, France
| | - M Roupret
- Sorbonne University, GRC 5 Predictive Onco-Uro, AP-HP, Urology, Pitie-Salpetriere Hospital, 75013 Paris, France.
| | - U Pinar
- Sorbonne University, GRC 5 Predictive Onco-Uro, AP-HP, Urology, Pitie-Salpetriere Hospital, 75013 Paris, France
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Vives-Rego J, Vaque MD, Sanchez Leal J, Parra J. Surfactants Biodegradation in Sea Water / Biologischer Tensidabbau in Meerwasser. TENSIDE SURFACT DET 2021. [DOI: 10.1515/tsd-1987-240110] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Pinar U, Clerget A, Perrot O, Beaud N, Akakpo W, Ruggiero M, Parra J, Vaessen C, Guillot-Tantay C, Conort P, Campedel L, Girault J, Simon J, Maingon P, Renard-Penna R, Mozer P, Chartier-Kastler E, Roupret M, Seisen T. Assessment of physicians’ satisfaction with a virtual tumour board in a French academic centre during the COVID-19 pandemic. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)01362-2] [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: 10/20/2022]
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Pinar U, Anract J, Chartier-Kastler E, Parra J, Vaessen C, De La Taille A, Roupret M. Positive environmental impact of remote teleconsultation in urology during the COVID-19 pandemic in a highly populated area. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)01358-0] [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: 11/26/2022]
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Abdessater M, Alechinsky L, Parra J, Malaquin G, Huot O, Bastien O, Barrou B, Drouin SJ. Anatomical variations of the renal artery based on the surgeon's direct observation: A French perspective. Morphologie 2021; 106:15-22. [PMID: 33745846 DOI: 10.1016/j.morpho.2021.01.005] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 01/24/2021] [Accepted: 01/25/2021] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Renal arterial vasculature presents a great anatomical variation. A good knowledge of this anatomy is essential in the field of kidney transplantation. The aim of this study is to describe the anatomical variations of the renal arterial vasculature based on the retrieved but not transplanted kidneys (RNTK) and their contralateral grafted kidneys (CGK), which anatomy is described by surgeons themselves after aortic dissection during multi-organ procurement (MOP). MATERIAL AND METHODS Using the "Crystal" database of the French "Agence de la biomédecine" (ABM), all RNTK were retrospectively selected over one year. Then, the arterial anatomy of each RNTK and their CGK was studied using the surgical and the histopathological reports. The surgical report was completed by the surgeon at the end of the MOP from deceased donors. The qualitative variables were expressed in numbers (percentage of the population) and were compared by a Chi2 test or an exact Fisher test depending on the sample size. A P-value of less than 0.05 was considered statistically significant. RESULTS In total, 356 kidneys were studied (241 RNTK - 115 CGK), 69% had a single artery and 31% had multiple arteries (26% with two arteries and 5% with three or more). The incidence of multiple arteries was similar between the right and left kidneys (32% vs. 30% respectively). A modal arrangement with 1 artery on each side was present in 51% of cases. Thus, 1 in 2 donors had at least 2 arteries on one side. Multiple arteries were bilateral in 12% of cases. The RNTK group presented more kidneys with multiple arteries than the CGK group (35% vs. 22%). CONCLUSION Our study shows a higher incidence of multiple renal arteries than the literature (31% vs. 25%). Thus, MOP can be considered as an accurate and reliable method of describing renal arterial anatomy, especially that some small arteries may be missed when using radiological or cadaveric dissection techniques.
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Affiliation(s)
- M Abdessater
- Department of urology and renal transplantation, Sorbonne University, Pitié Salpêtrière University Hospital, AP-HP, 83, boulevard de l'hôpital, 75013 Paris, France.
| | - L Alechinsky
- Department of urology and renal transplantation, Sorbonne University, Pitié Salpêtrière University Hospital, AP-HP, 83, boulevard de l'hôpital, 75013 Paris, France
| | - J Parra
- Department of urology and renal transplantation, Sorbonne University, Pitié Salpêtrière University Hospital, AP-HP, 83, boulevard de l'hôpital, 75013 Paris, France
| | - G Malaquin
- Agence de la biomédecine, 1, avenue du stade de France, 93212 Saint-Denis-la-Plaine cedex, France
| | - O Huot
- Agence de la biomédecine, 1, avenue du stade de France, 93212 Saint-Denis-la-Plaine cedex, France
| | - O Bastien
- Agence de la biomédecine, 1, avenue du stade de France, 93212 Saint-Denis-la-Plaine cedex, France
| | - B Barrou
- Department of urology and renal transplantation, Sorbonne University, Pitié Salpêtrière University Hospital, AP-HP, 83, boulevard de l'hôpital, 75013 Paris, France.
| | - S J Drouin
- Department of urology and renal transplantation, Sorbonne University, Pitié Salpêtrière University Hospital, AP-HP, 83, boulevard de l'hôpital, 75013 Paris, France
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Parra J, Ford CD, Murillo R. PHYTOCHEMICAL STUDY OF ENDEMIC COSTA RICAN ANNONACEAE SPECIES Annona pittieri AND Cymbopetalum costaricense. J Chil Chem Soc 2021. [DOI: 10.4067/s0717-97072021000105047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Pinar U, Anract J, Perrot O, Tabourin T, Chartier-Kastler E, Parra J, Vaessen C, De La Taille A, Roupret M. Évaluation préliminaire de la satisfaction des patients et des médecins concernant l’utilisation de la téléconsultation en urologie pendant la pandémie COVID-19. Prog Urol 2020. [DOI: 10.1016/j.purol.2020.07.015] [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: 11/28/2022]
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Abdessater M, Akakpo W, Kanbar A, Parra J, Chartier-Kastler E, Roupret M. Traitement de la maladie de Lapeyronie par les ondes de choc de faible intensité : expérience monocentrique. Prog Urol 2020. [DOI: 10.1016/j.purol.2020.07.202] [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: 11/28/2022]
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Bentellis I, Chartier-Kastler E, Guillot-Tantay C, Parra J, Phé V. Cystectomie robot-assistée avec dérivation urinaire non continente trans-iléale intracorporelle chez les patients neuro-urologiques. Prog Urol 2020. [DOI: 10.1016/j.purol.2020.08.021] [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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Tabourin T, Sarfati J, Pinar U, Beaud N, Parra J, Vaessen C, Gomez F, Benamran D, Canlorbe G, Belghiti J, Chartier-Kastler E, Cussenot O, Seisen T, Roupret M. Évaluation du risque de contamination par le coronavirus après chirurgie robotique durant la pandémie COVID-19. Prog Urol 2020. [DOI: 10.1016/j.purol.2020.07.011] [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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Hessler D, Fisher L, Polonsky W, Strycker L, Parra J, Bowyer V, Dedhia M, Masharani U. There is value in treating elevated levels of diabetes distress: the clinical impact of targeted interventions in adults with Type 1 diabetes. Diabet Med 2020; 37:71-74. [PMID: 31314907 DOI: 10.1111/dme.14082] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/16/2019] [Indexed: 11/28/2022]
Abstract
AIM To compare the effect of targeted interventions to reduce high diabetes distress among adults with Type 1 diabetes with a comparison sample of similar but untreated individuals, and to document the stability of untreated diabetes distress over time. METHODS A total of 51 adults with Type 1 diabetes with elevated baseline diabetes distress (distress score ≥ 2.0) and HbA1c levels (≥ 58 mmol/mol) were identified from a longitudinal, non-intervention study, and compared with a similar sample of 51 participants in an intervention study. Both groups completed the T1-DDS diabetes distress questionnaire at baseline and 9 months. RESULTS Large and significant reductions in diabetes distress scores were recorded in the intervention group (mean ± sd change = -0.6 ± 0.6), while minimal change was found in the non-intervention group (-0.2 ± 0.6, group effect P = 0.002; effect size d = 0.67). Additional analyses using the established minimal clinically important difference for the T1-DDS showed that diabetes distress increased significantly (minimal clinically important difference ≥ 1) or persisted at high levels for 51% of participants in the non-intervention group, compared with 23.5% in the intervention group. CONCLUSION Our results showed that targeted interventions led to dramatic reductions in diabetes distress compared with a lack of treatment. We also conclude that elevated diabetes distress, when left unaddressed, does not resolve over time and often remains chronic. (Clinical Trials Registry no.: NCT02175732).
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Affiliation(s)
- D Hessler
- Department of Family and Community Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - L Fisher
- Department of Family and Community Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - W Polonsky
- Behavioural Diabetes Institute, Department of Psychiatry, University of California, San Diego, CA, USA
| | - L Strycker
- Oregon Research Institute, Eugene, OR, USA
| | - J Parra
- Department of Family and Community Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - V Bowyer
- Department of Family and Community Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - M Dedhia
- Department of Family and Community Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - U Masharani
- Department of Medicine, University of California, San Francisco, CA, USA
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Msika J, Seisen T, Vaessen C, Parra J, Cohen J, Chartier Kastler E, Bitker M, Roupret M. Faisabilité de la prostatectomie totale laparoscopique robot-assistée en unité de chirurgie ambulatoire pour la prise en charge du cancer de prostate. Prog Urol 2019. [DOI: 10.1016/j.purol.2019.08.073] [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: 10/25/2022]
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Kaulanjan K, Drouin S, Vaessen C, Parra J, Arzouk N, Tourret J, Ourahma S, Cazenave M, Barrou B. Prélèvement robot assisté du rein de donneur vivant : expérience monocentrique. Prog Urol 2019. [DOI: 10.1016/j.purol.2019.08.193] [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: 10/25/2022]
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Parra J, Duncan KR. Assessing metabolite biogeography of Micrococcus spp. and Pseudonocardia spp. isolated from marine environments. Access Microbiol 2019. [DOI: 10.1099/acmi.ac2019.po0359] [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: 11/18/2022] Open
Affiliation(s)
- Jonathan Parra
- University Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, United Kingdom
| | - Katherine R. Duncan
- University Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, United Kingdom
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Lenfant L, Verhoest G, Campi R, Parra J, Graffeille V, Masson-Lecomte A, Vordos D, De La Taille A, Roumiguie M, Lesourd M, Taksin L, Vaessen C, Ploussard G, Granger B, Rouprêt M. Comparaison des résultats périopératoires entre la reconstruction urinaire intracorporelle et extracorporelle après cystectomie robot-assistée pour cancer de vessie : une étude multicentrique française. Prog Urol 2018. [DOI: 10.1016/j.purol.2018.07.119] [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: 11/27/2022]
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Wafi A, Faron G, Parra J, Gucciardo L. Influence of cervical cerclage interventions upon the incidence of neonatal death: a retrospective study comparing prophylactic versus rescue cerclages. Facts Views Vis Obgyn 2018; 10:29-36. [PMID: 30510665 PMCID: PMC6260668] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
OBJECTIVE The purpose of this study was to compare the efficacy of prophylactic and rescue cervical cerclages for pregnant patients with an incompetent cervix, and to assess the neonatal outcomes of both clinical conditions. METHODS This was a retrospective observational study of all women who had an elective or rescue cerclage between January 2008 and December 2016 in our institution. Prophylactic cerclage was defined as a cerclage before 16 weeks of gestation, while rescue cerclages were performed between 16 and 23 weeks of gestation. RESULTS In total, we analyzed the outcomes of 212 cervical interventions; 71% of the recruited patients experienced prophylactic cerclage, while 29% underwent rescue cerclage. Most of the patients delivered vaginally (70%) and were able to leave the hospital with a healthy newborn (78%). The mean pregnancy prolongation time after cerclage in the prophylactic and rescue groups were 21 weeks and 10 weeks, respectively. CONCLUSION Prophylactic cerclage interventions are most likely to be associated with a reduction of fetal demise because of the correlation between fetal prognosis and the gestational age at which cerclage is performed. Once the diagnosis of cervical insufficiency is confirmed, cerclage should be recommended as this will help to prolong the pregnancy.
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Affiliation(s)
- A Wafi
- Department of Obstetrics and Prenatal Medicine, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - G Faron
- Department of Obstetrics and Prenatal Medicine, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - J Parra
- Faculty of Medicine and Pharmacy, Department of Biostatistics and Medical Informatics, Vrije Universiteit Brussel, Brussels, Belgium
| | - L Gucciardo
- Department of Obstetrics and Prenatal Medicine, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
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Tur R, De Grado C, Martin MR, De Castro J, Filipovich E, Segovia B, Ceballos J, Parra J, Revestido R, Alés-Martínez JE. Abstract P3-01-19: Relationship of axillary total tumor load (TTL) by OSNA (one step nucleic acid amplification) in early breast cancer and clinical outcomes using strict Z0011 study criteria for axilla management. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p3-01-19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: The study of sentinel lymph node (SNL) assessed by OSNA provides a new variable, Total Tumoral Load (TTL).This variable is defined as the amount of CK19 mRNA copies number in all positives SLN. TTL has been showed to predict the axillary node status and has been analysed to determine its usefulness in the axillary surgical management. Based on TTL values different cut-off points have been proposed (last 25.000 copies) to establish a new tool to practice axillary lymph node dissection (ALND). We present the follow-up data of at least 5 years of breast cancer patients who underwent ALND according, strictly, to Z0011 trial criteria. We hypothesized that there will be no correlation between TTL and locoregional relapse if Z0011 are followed.
Methods: Clinicopathological and follow up data were obtained from patients with invasive breast cancer and SLN assessed by OSNA between 2011 and 2012 at Complejo Asistencial de Ávila, Spain. ALND was decided based on Z0011 study criteria independently of TTL. All patients have been followed for a minimun of 5 years.
Results: A total of 106 patients underwent SN assessed by OSNA, age range 27-85 years (mean 58,96). Of them 90% were ductal, 7,5% lobular and 2% others. By inmunophenotype: Luminal A 55%, Luminal B 28%, Triple Negative 9,4%, Her2 positive 3,7% and Luminal B-Her2 positive 2,8%. TTL was equal to zero in 58 cases and greater than zero in 48 cases with a range of 280-2.700.000 copies. Only 5 cases met ALND criteria (average TTL 68.164). Average TTL in cases without ALND was 111.000. For the time being, none of them has had locoregional relapse (median follow up 65 months). 3 patients have died one metastatic desease (Negative SN), one uterine cervix cancer and one neutropenic fever.
Baseline and outcomes dataVARIABLE N%Age, years (median, range) 59 (27-85) Tumour TypeDuctal9690,5 Lobular87,5 Others21,8InmunophenotypeLuminal A5955,6 Luminal B3028,3 Luminal B-Her232,8 Her243,7 Triple Negative109,4Total Tumoral Load (TTL)=05854,7 >04845,2Axillary Lymph Node Dissection (ALND) 254,7TTL >25.000 2321,7Locoregional relapse 00Overall Survival 95,2
Conclusions:
-Using Z0011 criteria and OSNA no locoregional recurrence has been observed so far.
-TTL did not predict risk of recurrence
-If we had based axillary management only on TTL values (i.e higher than 25.000 copies) we would have unnecessarily increased the number of lymphadenectomies in a 22%.
This is an ongoing study that designed to increased the sample size and obtain longer follow-up data.
Citation Format: Tur R, De Grado C, Martin MR, De Castro J, Filipovich E, Segovia B, Ceballos J, Parra J, Revestido R, Alés-Martínez JE. Relationship of axillary total tumor load (TTL) by OSNA (one step nucleic acid amplification) in early breast cancer and clinical outcomes using strict Z0011 study criteria for axilla management [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P3-01-19.
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Affiliation(s)
- R Tur
- Complejo Asistencial de Ávila, Ávila, Spain; Complejo Asistencial de Ävila, Ávila, Spain; Biomedical Investigation Center (CIBER-BBN. ISCIII), Ávila, Spain
| | - C De Grado
- Complejo Asistencial de Ávila, Ávila, Spain; Complejo Asistencial de Ävila, Ávila, Spain; Biomedical Investigation Center (CIBER-BBN. ISCIII), Ávila, Spain
| | - MR Martin
- Complejo Asistencial de Ávila, Ávila, Spain; Complejo Asistencial de Ävila, Ávila, Spain; Biomedical Investigation Center (CIBER-BBN. ISCIII), Ávila, Spain
| | - J De Castro
- Complejo Asistencial de Ávila, Ávila, Spain; Complejo Asistencial de Ävila, Ávila, Spain; Biomedical Investigation Center (CIBER-BBN. ISCIII), Ávila, Spain
| | - E Filipovich
- Complejo Asistencial de Ávila, Ávila, Spain; Complejo Asistencial de Ävila, Ávila, Spain; Biomedical Investigation Center (CIBER-BBN. ISCIII), Ávila, Spain
| | - B Segovia
- Complejo Asistencial de Ávila, Ávila, Spain; Complejo Asistencial de Ävila, Ávila, Spain; Biomedical Investigation Center (CIBER-BBN. ISCIII), Ávila, Spain
| | - J Ceballos
- Complejo Asistencial de Ávila, Ávila, Spain; Complejo Asistencial de Ävila, Ávila, Spain; Biomedical Investigation Center (CIBER-BBN. ISCIII), Ávila, Spain
| | - J Parra
- Complejo Asistencial de Ávila, Ávila, Spain; Complejo Asistencial de Ävila, Ávila, Spain; Biomedical Investigation Center (CIBER-BBN. ISCIII), Ávila, Spain
| | - R Revestido
- Complejo Asistencial de Ávila, Ávila, Spain; Complejo Asistencial de Ävila, Ávila, Spain; Biomedical Investigation Center (CIBER-BBN. ISCIII), Ávila, Spain
| | - JE Alés-Martínez
- Complejo Asistencial de Ávila, Ávila, Spain; Complejo Asistencial de Ävila, Ávila, Spain; Biomedical Investigation Center (CIBER-BBN. ISCIII), Ávila, Spain
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Unuane D, Velkeniers B, Bravenboer B, Drakopoulos P, Tournaye H, Parra J, De Brucker M. Impact of thyroid autoimmunity in euthyroid women on live birth rate after IUI. Hum Reprod 2017; 32:915-922. [PMID: 28333271 DOI: 10.1093/humrep/dex033] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [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: 11/13/2016] [Accepted: 02/06/2017] [Indexed: 12/26/2022] Open
Abstract
Study question Does thyroid autoimmunity (TAI) predict live birth rate in euthyroid women after one treatment cycle in IUI patients? Summary answer TAI as such does not influence pregnancy outcome after IUI treatment. What is known already The role of TAI on pregnancy outcome in the case of IVF/ICSI is largely debated in the literature. This is the first study to address this issue in the case of IUI. Study design, size, duration This was a retrospective cohort study. A two-armed study design was performed: patients anti-thyroid peroxidase (TPO)+ and patients anti-TPO-. All patients who started their first IUI cycle in our fertility center between 1 January 2010 and 31 December 2014 were included. After exclusion of those patients with or being treated for thyroid dysfunction, 3143 patients were finally included in the study. Participants/materials, setting, methods After approval by the institutional review board we retrospectively included all patients who started their first IUI cycle in our center between 1 January 2010 and 31 December 2014 with follow-up of outcome until 31 December 2015. Patients with clinical thyroid dysfunction were excluded (thyroid-stimulating hormone (TSH) <0.01 mIU/l; TSH >5 mIU/l) as were patients under treatment with levothyroxine or anti-thyroid drugs. These patients were then divided into two main groups: patients anti-TPO+ and patients anti-TPO- (= control group). Live birth delivery after 25 weeks of gestation was taken as the primary endpoint of our study. As a secondary endpoint, we evaluated differences in live birth delivery after IUI according to different upper limits of preconception TSH thresholds (<2.5 and <5.0 mIU/l). Furthermore, the influence of thyroid function (TSH, free thyroxine (fT4)), anti-TPO status, age, smoking, BMI, parity, ovarian reserve (anti-mullerian hormone (AMH) and FSH), IUI indication and IUI stimulation on live birth rate was analyzed. Main results and the role of chance Between-group comparison did not show any significant difference between the anti-TPO+ and anti-TPO- group with respect to live birth delivery-, pregnancy- or miscarriage rate with odds ratio at 1.04 (95% CI: 0.63; 1.69), 0.98 (95% CI: 0.62; 1.55) and 0.74 (95% CI: 0.23; 2.39), respectively. In addition, there were no significant differences in live birth delivery-, pregnancy- or miscarriage rate when comparing subgroups according to TSH level (TSH ≥2.5 mIU/l vs. TSH <2.5 mIU/l) with an odds ratio at 1.05 (95% CI: 0.76; 1.47), 1.04 (95% CI: 0.77; 1.41) and 0.95 (95% CI: 0.47; 1.94), respectively. Limitations, reasons for caution This study was powered for the primary aim, live birth rate. The limitations of this study are the absence of region-specific reference ranges for thyroid hormones and the absence of follow-up of TSH values during ART and subsequent pregnancy. Moreover, there was a time difference of 5 months between thyroid assessment and the start of stimulation. The area where the study was conducted corresponds to a mild iodine deficient area and data should be translated with caution to areas with different iodine backgrounds. Wider implications of the findings Our findings indicate comparable pregnancy-, abortion- and delivery rates in women with and without TAI undergoing IUI. Moreover, we were unable to confirm a negative effect of TSH level above 2.5 mIU/l on live birth delivery rate. We therefore believe that advocating Levothyroxine treatment at TSH levels between 2.5 and 4 mIU/l needs to be considered with caution and requires further analysis in a prospective cohort study. Study funding/competing interest(s) No external funding was used for this study. No conflicts of interest are declared.
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Affiliation(s)
- D Unuane
- Department of Endocrinology, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Laarbeeklaan, Brussels, Belgium
| | - B Velkeniers
- Department of Endocrinology, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Laarbeeklaan, Brussels, Belgium
| | - B Bravenboer
- Department of Endocrinology, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Laarbeeklaan, Brussels, Belgium
| | - P Drakopoulos
- Department of Gynaecology and Fertility, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Laarbeeklaan, Brussels, Belgium
| | - H Tournaye
- Department of Gynaecology and Fertility, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Laarbeeklaan, Brussels, Belgium
| | - J Parra
- Department of Statistics, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Laarbeeklaan, Brussels, Belgium
| | - M De Brucker
- Department of Gynaecology and Fertility, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Laarbeeklaan, Brussels, Belgium.,Department of Obstetrics and Gynaecology, CHU Tivoli, Avenue Max Buset, La Louvière, Belgium
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Drakopoulos P, van de Vijver A, Parra J, Anckaert E, Schiettecatte J, Smitz J, Blockeel C, Hund M, Verhagen-Kamerbeek W, He Y, Polyzos N, Tournaye H. Effect of GnRH agonist downregulation on serum AMH levels: a prospective cohort study with repeated measurements. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Flippot R, Mouawad R, Spano JP, Rouprêt M, Compérat E, Bitker MO, Parra J, Vaessen C, Allanic F, Manach Q, Tannir N, Khayat D, Su X, Malouf G. Expression of long non-coding RNA MFI2-AS1 is a strong predictor of recurrence in sporadic localized clear-cell renal cell carcinoma. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx371.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Goñi I, Rodríguez R, García-Arnáez I, Parra J, Gurruchaga M. Preparation and characterization of injectable PMMA-strontium-substituted bioactive glass bone cement composites. J Biomed Mater Res B Appl Biomater 2017; 106:1245-1257. [PMID: 28580716 DOI: 10.1002/jbm.b.33935] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 05/15/2017] [Accepted: 05/16/2017] [Indexed: 12/31/2022]
Abstract
In most minimally-invasive procedures used to address severe pain arising from compression fractures of the vertebral bodies, such as percutaneous vertebroplasty (PVP), a poly(methyl methacrylate) (PMMA) bone cement is used. Shortcomings of this type of cement, such as high exotherm temperature and lack of bioactivity, are well known. We prepared different formulations of a composite bone cement, whose solid constituents consisted of PMMA beads and particles of a bioactive glass (BG), where 0-20%(w/w) of the calcium component was substituted by strontium. The difference between the formulations was in the relative amounts of the solid phase constituents and in the Sr-content of BG. We determined the influence of the mixture of solid phase constituents of the cement formulation on a collection of properties, such as maximum exotherm temperature (Tmax ), setting time (tset ), and injectability (I). The selection of the PMMA beads was crucial to obtain cement composite formulations capable to be efficiently injected. Results allowed to select nine solid phase mixtures to be further tested. Then, we determined the influence of the composition of these composite bone cements on Tmax , tset , I, and cell proliferation. The results showed that the performance of various of the selected composite cements was better than that of PMMA cement reference, with lower Tmax , lower tset , and higher I. We found that incorporation of Sr-substituted BGs into these materials bestows bioactivity properties associated with the role of Sr in bone formation, leading to some composite cement formulations that may be suitable for use in PVP. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 1245-1257, 2018.
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Affiliation(s)
- I Goñi
- Department of Science and Technology of Polymers, POLYMAT (Institute of Polymeric Materials), Faculty of Chemistry, University of The Basque Country (UPV/EHU), P°Manuel de Lardizabal, 3., 20018, San Sebastián, Spain
| | - R Rodríguez
- Department of Science and Technology of Polymers, POLYMAT (Institute of Polymeric Materials), Faculty of Chemistry, University of The Basque Country (UPV/EHU), P°Manuel de Lardizabal, 3., 20018, San Sebastián, Spain
| | - I García-Arnáez
- Department of Science and Technology of Polymers, POLYMAT (Institute of Polymeric Materials), Faculty of Chemistry, University of The Basque Country (UPV/EHU), P°Manuel de Lardizabal, 3., 20018, San Sebastián, Spain
| | - J Parra
- Unidad Asociada CAA-CSIC. Biomedical Research Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN). Complejo Asistencial de Ávila. Hospital Provincial., 05071, Ávila, Spain
| | - M Gurruchaga
- Department of Science and Technology of Polymers, POLYMAT (Institute of Polymeric Materials), Faculty of Chemistry, University of The Basque Country (UPV/EHU), P°Manuel de Lardizabal, 3., 20018, San Sebastián, Spain
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Pascual A, Guerriero S, Rams N, Juez L, Ajossa S, Graupera B, Hereter L, Cappai A, Pero M, Perniciano M, Errasti T, Parra J, Solis M, Alcázar JL. Clinical and ultrasound features of benign, borderline, and malignant invasive mucinous ovarian tumors. EUR J GYNAECOL ONCOL 2017. [PMID: 29693878 DOI: 10.1002/uog.14971] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
OBJECTIVE To compare clinical and sonographic features of benign, borderline, and malignant invasive mucinous ovarian tumors (MOTs). MATERIALS AND METHODS Retrospective observational multicenter study comprising 365 women (mean age: 46.1 years) with a histologically confirmed benign, borderline or malignant invasive MOT. Clinical data (patient's age, patient's complaints), tumor markers (CA-125 and CA-1 9.9), and sonographic data (tumor size, bilaterality, morphology -unilocular, multilocular, unilocular-solid, multilocular-solid and solid-, and IOTA color score) were reviewed and compared among these three groups. Women with ultrasound evidence on intra-abdominal disease spread were excluded. RESULTS Three hundred seventy-eight MOTs (14 women had bilateral lesions) were analyzed. Histologically, 287 tumors were benign, 51 were borderline, and 40 were malignant. No difference in patient's mean age was observed. Women with borderline or invasive tumors were less frequently asymptomatic. Tumors were larger in case of invasive lesions. Borderline and invasive tumors showed solid components and exhibited IOTA color score 3 or 4, more frequently than benign lesions (p < 0.001). However, the authors discovered that 16 out of 51 (31.4%) of borderline tumors and six out of 40 (15.0%) of invasive cancers had no solid components and a color score 1 or 2, and were considered as a benign lesion by the sonolo- gist. On the other hand, 96 out of 287 (33.4%) benign mucinous cystadenoma exhibited solid components and/or a color score of 3 or 4. CONCLUSIONS In spite of statistical differences, the authors observed significant overlapping in ultrasound features among benign, borderline, and invasive ovarian mucinous tumors that renders a difficult accurate preoperative discrimination among these lesions.
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Drouin S, Raux M, Tourret J, Lebreton G, Coffin G, Cohen J, Arzouk N, Ourahma S, Parra J, Riou B, Leprince P, Barrou B. Transplantation rénale issue de donneurs décédés d’arrêt cardiaque de la catégorie III de Maastricht. Résultats après un an d’expérience. Prog Urol 2016. [DOI: 10.1016/j.purol.2016.07.086] [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: 10/20/2022]
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Bastard C, Rouprêt M, Kerever S, Bitker M, Parra J, Zorn K, Misrai V. Évaluation comparative des courbes d’apprentissage de la photovaporisation prostatique au laser Greenlight® : résultats d’une étude multicentrique. Prog Urol 2016. [DOI: 10.1016/j.purol.2016.07.230] [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: 11/28/2022]
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Drouin S, Tourret J, Arzouk N, Cohen J, Coffin G, Parra J, Barrou B. L’emploi de la solution de préservation SCOT 15® pourrait réduire l’incidence des rejets aigus en transplantation rénale. Prog Urol 2016. [DOI: 10.1016/j.purol.2016.07.088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Herrera FV, Ciro J, Parra J. La adición de Enterococcus faecium aumenta la respuesta inmune intestinal en cerdos en crecimiento. ARCH ZOOTEC 2016. [DOI: 10.21071/az.v65i251.701] [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: 11/23/2022] Open
Abstract
El destete produce un periodo breve de ayuno y adaptación a una nueva ración sólida, la cual provoca disminución de la supervivencia de los lechones y proliferación de la microbiota patógena. Se ha propuesto la utilización de probióticos, evitando que los seres humanos consuman alimentados tratados con antibióticos. El objetivo de este trabajo fue determinar el efecto de la adición de cepas de probióticos en cerdos en crecimiento sobre las poblaciones celulares del sistema inmune (eosinófilos, basófilos, neutrófilos, monocitos y linfocitos) en intestino delgado. Se sacrificaron 35 lechones escalonadamente los días 1 (21 días de edad), 15 y 30 posdetete, y se extrajo completamente el intestino. Los animales fueron alimentados con dos dietas: dieta comercial con y sin la adición de antibiótico; a esta última se adicionaron los diferentes probióticos (Lactobacillus casei, Lactobacillus acidophilus o Enterococcus faecium) en el agua de bebida. Se utilizó un diseño de bloques al azar en un arreglo de parcelas divididas. Los aislamientos realizados a partir de las muestras intestinales de E. faecium presentaron un mayor número de poblaciones celulares del sistema inmune a nivel intestinal (p<0.01). Además, se realizó medición del pH intestinal, el cual presentó una disminución estadística significativa (p<0.01), donde los animales que consumieron E. faecium presentaron los valores más bajos de pH intestinal, frente a aquellos que consumieron la dieta con adición de antibiótico. La adición de la cepa E. faecium en el alimento de lechones recién destetados, estimula el aumento en el número de poblaciones celulares intestinales del sistema inmune y alcanzan una mayor disminución del pH intestinal.
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Vuichoud C, Perrouin-Verbe MA, Phe V, Bitker MO, Parra J, Chartier-Kastler E. La dérivation cutanée continente après cystectomie pour cancer, une alternative fiable ? Étude rétrospective monocentrique. Prog Urol 2016; 26:642-650. [DOI: 10.1016/j.purol.2016.09.061] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 07/29/2016] [Accepted: 09/15/2016] [Indexed: 11/29/2022]
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Chávez L, López A, Parra J. Crecimiento y desarrollo intestinal de aves de engorde alimentadas con cepas probióticas. ARCH ZOOTEC 2016. [DOI: 10.21071/az.v65i249.441] [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: 11/23/2022] Open
Abstract
A través de la alimentación, los animales se exponen a agentes extraños, donde el epitelio intestinal actúa como una barrera natural contra las bacterias y sustancias tóxicas que estén presentes en el lumen intestinal. No obstante, la ingesta de bacterias probióticas podría influir sobre el desarrollo y función de órganos digestivos, específicamente el intestino, mejorando los parámetros fisiológicos, nutricionales e inmunológicos de este. El objetivo de este trabajo fue evaluar diferentes cepas probióticas sobre el crecimiento alométrico y desarrollo intestinal de pollos de engorde durante su etapa productiva. Se utilizaron 125 pollos machos (Cobb) de un día de edad y alimentados con dos dietas: dieta comercial con y sin la adición de antibiótico. Los diferentes probióticos (Lactobacillus casei, Lactobacillus acidophilus ó Enterococcus faecium) se suministraron en el agua de bebida de los animales que consumieron la dieta basal sin antibiótico garantizando una concentración de 107 UFC/ml. El diseño estadístico utilizado fue de bloques al azar en arreglo de parcelas divididas. La inclusión de probióticos, específicamente E. faecium, en la alimentación de pollos de engorde mejoraron el peso, desarrollo y crecimiento de órganos de importancia digestiva, específicamente intestino, lo cual se ve reflejado en vellosidades con mayor altura y ancho, y criptas menos profundas (p
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Thongprasert S, Alexandru A, Schenker M, Abdelaziz A, Clement D, Boldeanu C, Jovanovic D, Reyes-Igama J, Petrović M, Geater S, Radosavljevic D, Perin B, Krzakowski M, Serwatowski P, Parra J, Sriuranpong V, Jones H, Cseh A, Gaafar R. 477TiP Phase IV study of afatinib as second-line therapy for patients with locally advanced or metastatic non-small cell lung cancer (NSCLC) harboring common epidermal growth factor receptor (EGFR) mutations (Del19 and/or L858R). Ann Oncol 2015. [DOI: 10.1093/annonc/mdv532.61] [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: 11/14/2022] Open
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Pradère B, Peyronnet B, Ruggiero M, Khene Z, Seisen T, Parra J, Verhoest G, Vaessen C, Rouprêt M, Bensalah K. Étude multicentrique sur l’impact des anticoagulants et antiagrégants sur la morbidité de la néphrectomie partielle robotique. Prog Urol 2015; 25:824. [DOI: 10.1016/j.purol.2015.08.216] [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: 10/22/2022]
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Gambachidze D, Phé V, Drouin SJ, Wolff B, Parra J, Mozer P, Renard-Penna R, Chartier-Kastler E, Rouprêt M. [Functional outcomes obtained after vesicoureteral reimplantation surgery in adults: A review]. Prog Urol 2015; 25:683-91. [PMID: 26184044 DOI: 10.1016/j.purol.2015.06.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2015] [Revised: 05/31/2015] [Accepted: 06/12/2015] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Vesico-ureteral reimplantations (VUR) for adults are complex procedures, often practicing for distal ureteral lesions. Our goal was to synthesis the main indications for VUR, different techniques and their functional outcomes. MATERIAL AND METHODS A literature review in English by Medline, Embase and Google scholar was performed using the following keywords: ureter; laparoscopy; robotics, reimplantation; surgery; obstruction; morbidity; complications; psoas hitch; Boari flap; ureteroneocystostomy. RESULTS In more than half of the cases, aetiology was a iatrogenic ureteral lesion. When the ureteral defect was less than 2 cm, direct or non-refluxing VUR was the technique of choice. If defect was superior than 2 cm the Boari flap or vesicopsoas hitch were preferred. Several surgical approaches were feasible: open, laparoscopic only, robot assisted laparoscopic. Estimated blood loss, pain and mean hospital stay seemed better with conventional or robotic coelioscopy. Nevertheless, complications, pre-/post-operative renal function and mean operative time seemed similar. The most frequent major complication was the anastomotic urine leakage. CONCLUSIONS The VUR techniques are well codified now even if it's a rare procedure. Functional outcomes are satisfied according to literature and morbidity is more and more decreasing but the level of evidence of the studies is low.
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Affiliation(s)
- D Gambachidze
- Service d'urologie de l'hôpital Pitié-Salpêtrière, faculté de médecine Pierre-et-Marie-Curie, université Paris 6, AP-HP, 47-83, boulevard de l'Hôpital, 75013 Paris, France
| | - V Phé
- Service d'urologie de l'hôpital Pitié-Salpêtrière, faculté de médecine Pierre-et-Marie-Curie, université Paris 6, AP-HP, 47-83, boulevard de l'Hôpital, 75013 Paris, France
| | - S J Drouin
- Service d'urologie de l'hôpital Pitié-Salpêtrière, faculté de médecine Pierre-et-Marie-Curie, université Paris 6, AP-HP, 47-83, boulevard de l'Hôpital, 75013 Paris, France
| | - B Wolff
- Service d'urologie de l'hôpital Pitié-Salpêtrière, faculté de médecine Pierre-et-Marie-Curie, université Paris 6, AP-HP, 47-83, boulevard de l'Hôpital, 75013 Paris, France
| | - J Parra
- Service d'urologie de l'hôpital Pitié-Salpêtrière, faculté de médecine Pierre-et-Marie-Curie, université Paris 6, AP-HP, 47-83, boulevard de l'Hôpital, 75013 Paris, France
| | - P Mozer
- Service d'urologie de l'hôpital Pitié-Salpêtrière, faculté de médecine Pierre-et-Marie-Curie, université Paris 6, AP-HP, 47-83, boulevard de l'Hôpital, 75013 Paris, France
| | - R Renard-Penna
- Service d'urologie de l'hôpital Pitié-Salpêtrière, faculté de médecine Pierre-et-Marie-Curie, université Paris 6, AP-HP, 47-83, boulevard de l'Hôpital, 75013 Paris, France
| | - E Chartier-Kastler
- Service d'urologie de l'hôpital Pitié-Salpêtrière, faculté de médecine Pierre-et-Marie-Curie, université Paris 6, AP-HP, 47-83, boulevard de l'Hôpital, 75013 Paris, France
| | - M Rouprêt
- Service d'urologie de l'hôpital Pitié-Salpêtrière, faculté de médecine Pierre-et-Marie-Curie, université Paris 6, AP-HP, 47-83, boulevard de l'Hôpital, 75013 Paris, France.
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Zapata DJ, Rodríguez BJ, Ramírez MC, Lopera A, Parra J. Escherichia coli lipopolysaccharide affects intestinal mucin secretion in weaned pigs. REV COLOMB CIENC PEC 2015. [DOI: 10.17533/udea.rccp.v28n3a01] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Franco-Marquès E, Parra J, Pèlach MA, Méndez JA. Synthesis and characterization of self-curing hydrophilic bone cements for protein delivery. J Biomed Mater Res B Appl Biomater 2014; 103:992-1001. [PMID: 25209322 DOI: 10.1002/jbm.b.33283] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 07/25/2014] [Accepted: 08/19/2014] [Indexed: 11/06/2022]
Abstract
New formulations of acrylic bone cements for bone defect reparation, based on self-hardening methyl methacrylate (MMA)/methacrylic acid (MAA), with a high capacity for protein delivery, have been developed. The self-curing formulations were prepared by partial substitution of solid phase PMMA microparticles by newly obtained PMAA microspheres. The PMAA microspheres were prepared by inverse suspension polymerization of their monomer and were cross-linked with N,N'-methylene-bis-acrylamide (MBA) (10-15 wt %) to produce stable systems in contact with aqueous media. PMAA microspheres were loaded with hydrolyzed collagen (HC) as a model protein to simulate bone morphogenetic protein delivery useful for hard tissue reconstruction. Solid phase PMMA microparticles in the formulation were partially substituted by new PMAA-HC microspheres and were characterized to determine viability as an acrylic bone cement in minimally invasive surgery. The incorporation of PMAA-HC microspheres decreased peak temperature by 20°C, which minimized thermal necrotic risk after implantation. Mechanical compression tests revealed a behavior, under dry conditions, close to ISO 5833 standard requirements. However, a drastic drop in mechanical strength, ∼64%, was obtained after 15 days of immersion in simulated physiological conditions (37°C and pH 7.4) and was attributed to water absorption and a subsequent plasticizing effect. The increase in water uptake and retention enhanced the capability for controlled protein delivery. Finally, the biocompatibility of the cements was determined; some toxicity of the material during the first hours of culture incubation was observed. Later, toxicity was observed to decrease due to nonreacted monomer leaching, which ensured the low toxicity of the already polymerized phase.
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Affiliation(s)
- E Franco-Marquès
- LEPAMAP Group, Universitat de Girona, Maria Aurèlia Capmany 61, 17071, Girona, Spain
| | - J Parra
- Unidad Asociada de I+D al CSIC de Investigación Clínica y Biopatología Experimental, Complejo Asistencial de Ávila (SACYL), Jesús del Gran Poder 42, 05003, Avila, Spain
| | - M A Pèlach
- LEPAMAP Group, Universitat de Girona, Maria Aurèlia Capmany 61, 17071, Girona, Spain
| | - J A Méndez
- LEPAMAP Group, Universitat de Girona, Maria Aurèlia Capmany 61, 17071, Girona, Spain
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