1
|
Miralles Y, Fornés V, Roca A, Muelas R, Díaz JR, Romero G. Factors affecting N-acetyl-β-D-glucosaminidase as an indicator for mastitis detection in dairy sheep. Animal 2024; 18:101111. [PMID: 38460469 DOI: 10.1016/j.animal.2024.101111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 02/04/2024] [Accepted: 02/09/2024] [Indexed: 03/11/2024] Open
Abstract
The study of new indirect methods for mastitis detection is of great relevance both at the economic level of the farm and dairies, and in terms of consumer health, and animal welfare. These methods help us to monitor the disease and speed up the decision-making process on treatment of the affected animal and the destination of the milk. The main aim of this work was to study the effect of intramammary infection and other non-infectious factors on the activity of the enzyme N-acetyl-β-D-glucosaminidase (NAGase) in milk, in order to evaluate its use as an indicator for the early diagnosis of mastitis in sheep that could be less expensive, easier to measure and a better marker of inflammation or complementary to existing methods such as somatic cell count (SCC). Seven biweekly samplings were carried out, in which NAGase activity, SCC and milk were analyzed. Glands were classified according to their sanitary status based on the results of the SCC and bacteriological analysis. Non-infectious factors such as lactation stage, parity number and milking session had a statistically significant effect on NAGase values, finding the highest NAGase values at the onset and end of the study, in infectious mastitic glands of multiparous females and at morning milking. However, among the NAGase variation factors studied, the health status of the gland was the factor that caused the highest variation in enzyme levels, with infectious mastitic glands showing higher values than healthy glands. The predictive ability of NAGase was also studied by means of several logistic regression models, with the one that included NAGase together with lactation stage and parity obtaining the best results if sensitivity is to be prioritized, or the model that included NAGase, lactation stage, parity, milking and production if specificity is to be prioritized. From the results obtained, it can be concluded that the use of NAGase as an intramammary infection detection method in sheep can be useful when non-infectious factors that cause changes in the concentration of the enzyme are also considered.
Collapse
Affiliation(s)
- Y Miralles
- Responsible Research Office, Miguel Hernández University (UMH), Avda. de la Universidad s/n 03202 Elche, Spain.
| | - V Fornés
- Responsible Research Office, Miguel Hernández University (UMH), Avda. de la Universidad s/n 03202 Elche, Spain
| | - A Roca
- Technical Support Service for Teaching and Research (SATDI), Miguel Hernández University (UMH), Avda. de la Universidad s/n 03202 Elche, Spain
| | - R Muelas
- Technical Support Service for Teaching and Research (SATDI), Miguel Hernández University (UMH), Avda. de la Universidad s/n 03202 Elche, Spain
| | - J R Díaz
- Agro-food and Agro-environmental Research and Innovation Centre (CIAGRO), Miguel Hernández University (UMH), Ctra. de Beniel km 3.2, 03312 Orihuela, Spain
| | - G Romero
- Agro-food and Agro-environmental Research and Innovation Centre (CIAGRO), Miguel Hernández University (UMH), Ctra. de Beniel km 3.2, 03312 Orihuela, Spain
| |
Collapse
|
2
|
Simo C, Salvador C, Andreozzi P, Gomez-Vallejo V, Romero G, Dupin D, Llop J, Moya SE. Positron Emission Tomography Studies of the Biodistribution, Translocation, and Fate of Poly Allyl Amine-Based Carriers for Sirna Delivery by Systemic and Intratumoral Administration. Small 2023; 19:e2304326. [PMID: 37537708 DOI: 10.1002/smll.202304326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 07/05/2023] [Indexed: 08/05/2023]
Abstract
Polyamine-based vectors offer many advantages for gene therapy, but they are hampered by a limited knowledge on their biological fate and efficacy for nucleic acid delivery. The 18 F radiolabeled siRNA is complexed with poly(allyl amine) hydrochloride (PAH), PEGylated PAH (PAHPEG ), or oleic acid-modified PAH (PAHOleic ) to form polyplexes, and injected them intravenously into healthy rodents. The biodistribution patterns obtained by positron emission tomography (PET) imaging vary according to the polymer used for complexation. Free siRNA is quickly eliminated through the bladder. PAH and oleic acid modify PAH polyplexes accumulate in the lungs and liver. No elimination through the bladder is observed for PAH and PAHOleic within 2 h after administration. PAHPEG polyplexes accumulate in kidneys and are eliminated through the bladder. Polyplexes prepared with 18 F-labeled oleic acid-modified PAH and non-labeled siRNA show similar biodistribution to those prepared with labeled siRNA, but with more accumulation in the lungs due to the presence of non-complexed polymer. Intravenous administration of PAHOleic polyplexes in tumor models results in a limited availability of siRNA. When PAHOleic polyplexes are administered intratumorally in tumor bearing rodents, ≈40% of the radioactivity is retained in the tumor after 180 min while free siRNA is completely eliminated.
Collapse
Affiliation(s)
- Cristina Simo
- Radiochemistry and Nuclear Imaging laboratory, Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 194, Donostia-San Sebastián, 20014, Spain
- Soft Matter Nanotechnology, Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 194, Donostia-San Sebastián, 20014, Spain
- Department of Radiology, Washington University School of Medicine in St. Louis, St. Louis, MO, 63110, USA
| | - Cristian Salvador
- Soft Matter Nanotechnology, Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 194, Donostia-San Sebastián, 20014, Spain
- CIDETEC, Basque Research and Technology Alliance (BRTA), Parque Científico y Tecnológico de Gipuzkoa, Miramon Pasealekua, 196, Donostia-San Sebastián, 20014, Spain
| | - Patrizia Andreozzi
- Consorzio Sistemi a Grande Interfase, Department of Chemistry 'Ugo Schiff', University of Florence, Via della Lastruccia 3, FI, Sesto Fiorentino, 50019, Italy
| | - Vanessa Gomez-Vallejo
- Radiochemistry and Nuclear Imaging laboratory, Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 194, Donostia-San Sebastián, 20014, Spain
| | - Gabriela Romero
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, TX, 78249, USA
| | - Damien Dupin
- CIDETEC, Basque Research and Technology Alliance (BRTA), Parque Científico y Tecnológico de Gipuzkoa, Miramon Pasealekua, 196, Donostia-San Sebastián, 20014, Spain
| | - Jordi Llop
- Radiochemistry and Nuclear Imaging laboratory, Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 194, Donostia-San Sebastián, 20014, Spain
| | - Sergio E Moya
- Soft Matter Nanotechnology, Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 194, Donostia-San Sebastián, 20014, Spain
| |
Collapse
|
3
|
Gomez A, Muzzio N, Dudek A, Santi A, Redondo C, Zurbano R, Morales R, Romero G. Elucidating Mechanotransduction Processes During Magnetomechanical Neuromodulation Mediated by Magnetic Nanodiscs. Cell Mol Bioeng 2023; 16:283-298. [PMID: 37811002 PMCID: PMC10550892 DOI: 10.1007/s12195-023-00786-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 09/07/2023] [Indexed: 10/10/2023] Open
Abstract
Purpose Noninvasive cell-type-specific manipulation of neural signaling is critical in basic neuroscience research and in developing therapies for neurological disorders. Magnetic nanotechnologies have emerged as non-invasive neuromodulation approaches with high spatiotemporal control. We recently developed a wireless force-induced neurostimulation platform utilizing micro-sized magnetic discs (MDs) and low-intensity alternating magnetic fields (AMFs). When targeted to the cell membrane, MDs AMFs-triggered mechanoactuation enhances specific cell membrane receptors resulting in cell depolarization. Although promising, it is critical to understand the role of mechanical forces in magnetomechanical neuromodulation and their transduction to molecular signals for its optimization and future translation. Methods MDs are fabricated using top-down lithography techniques, functionalized with polymers and antibodies, and characterized for their physical properties. Primary cortical neurons co-cultured with MDs and transmembrane protein chemical inhibitors are subjected to 20 s pulses of weak AMFs (18 mT, 6 Hz). Calcium cell activity is recorded during AMFs stimulation. Results Neuronal activity in primary rat cortical neurons is evoked by the AMFs-triggered actuation of targeted MDs. Ion channel chemical inhibition suggests that magnetomechanical neuromodulation results from MDs actuation on Piezo1 and TRPC1 mechanosensitive ion channels. The actuation mechanisms depend on MDs size, with cell membrane stretch and stress caused by the MDs torque being the most dominant. Conclusions Magnetomechanical neuromodulation represents a tremendous potential since it fulfills the requirements of negligible heating (ΔT < 0.1 °C) and weak AMFs (< 100 Hz), which are limiting factors in the development of therapies and the design of clinical equipment. Supplementary Information The online version contains supplementary material available at 10.1007/s12195-023-00786-8.
Collapse
Affiliation(s)
- Amanda Gomez
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, 1 UTSA Circle, San Antonio, TX 78249 USA
| | - Nicolas Muzzio
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, 1 UTSA Circle, San Antonio, TX 78249 USA
| | - Ania Dudek
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, 1 UTSA Circle, San Antonio, TX 78249 USA
| | - Athena Santi
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, 1 UTSA Circle, San Antonio, TX 78249 USA
| | - Carolina Redondo
- Department of Physical Chemistry, University of the Basque Country UPV/EHU, 48940 Leioa, Spain
| | - Raquel Zurbano
- Department of Physical Chemistry, University of the Basque Country UPV/EHU, 48940 Leioa, Spain
| | - Rafael Morales
- Department of Physical Chemistry, University of the Basque Country UPV/EHU, 48940 Leioa, Spain
- BCMaterials, 48940 Leioa, Spain
- IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain
| | - Gabriela Romero
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, 1 UTSA Circle, San Antonio, TX 78249 USA
| |
Collapse
|
4
|
Romero G, Contreras LM, Aguirre Céspedes C, Wilkesman J, Clemente-Jiménez JM, Rodríguez-Vico F, Las Heras-Vázquez FJ. Efficiency Assessment between Entrapment and Covalent Bond Immobilization of Mutant β-Xylosidase onto Chitosan Support. Polymers (Basel) 2023; 15:3170. [PMID: 37571063 PMCID: PMC10421103 DOI: 10.3390/polym15153170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 07/17/2023] [Accepted: 07/23/2023] [Indexed: 08/13/2023] Open
Abstract
The Y509E mutant of β-xylosidase from Geobacillus stearothermophilus (XynB2Y509E) (which also bears xylanase activity) has been immobilized in chitosan spheres through either entrapment or covalent bond formation methods. The maximum immobilization yield by entrapment was achieved by chitosan beads developed using a 2% chitosan solution after 1 h of maturation time in CFG buffer with ethanol. On the other hand, the highest value in covalent bond immobilization was observed when employing chitosan beads that were prepared from a 2% chitosan solution after 4 h of activation in 1% glutaraldehyde solution at pH 8. The activity expressed after immobilization by covalent bonding was 23% higher compared to the activity expressed following entrapment immobilization, with values of 122.3 and 99.4 IU.g-1, respectively. Kinetic data revealed that catalytic turnover values were decreased as compared to a free counterpart. Both biocatalysts showed increased thermal and pH stability, along with an improved storage capacity, as they retained 88% and 40% of their activity after being stored at 4 °C for two months. Moreover, XynB2Y509E immobilized by covalent binding also exhibited outstanding reusability, retaining 92% of activity after 10 cycles of reuse. In conclusion, our results suggest that the covalent bond method appears to be the best choice for XynB2Y509E immobilization.
Collapse
Affiliation(s)
- Gabriela Romero
- Center for Environmental, Biological and Chemical Research, Experimental Faculty of Sciences and Technology, University of Carabobo, Valencia 2001, Venezuela; (G.R.); (J.W.)
- Department of Basic Sciences, School of Bioanalysis, Faculty of Health Sciences, University of Carabobo, Naguanagua 2005, Venezuela
| | - Lellys M. Contreras
- Center for Environmental, Biological and Chemical Research, Experimental Faculty of Sciences and Technology, University of Carabobo, Valencia 2001, Venezuela; (G.R.); (J.W.)
- Department of Chemistry and Physics, University of Almeria, Building CITE 1, Carretera de Sacramento s/n, La Cañada de San Urbano, 04120 Almeria, Spain; (J.M.C.-J.); (F.R.-V.)
| | - Carolina Aguirre Céspedes
- Centro de Energía, Department of Environmental Chemistry, Faculty of Sciences, Universidad Católica de la Santísima Concepción, Casilla 297, Concepción 4090541, Chile;
| | - Jeff Wilkesman
- Center for Environmental, Biological and Chemical Research, Experimental Faculty of Sciences and Technology, University of Carabobo, Valencia 2001, Venezuela; (G.R.); (J.W.)
- Institute for Biochemistry, University of Applied Sciences Mannheim, Paul-Wittsack-Straße 10, D-68163 Mannheim, Germany
| | - Josefa María Clemente-Jiménez
- Department of Chemistry and Physics, University of Almeria, Building CITE 1, Carretera de Sacramento s/n, La Cañada de San Urbano, 04120 Almeria, Spain; (J.M.C.-J.); (F.R.-V.)
- Campus de Excelencia Internacional Agroalimentario ceiA3, University of Almeria, 04120 Almeria, Spain
| | - Felipe Rodríguez-Vico
- Department of Chemistry and Physics, University of Almeria, Building CITE 1, Carretera de Sacramento s/n, La Cañada de San Urbano, 04120 Almeria, Spain; (J.M.C.-J.); (F.R.-V.)
- Campus de Excelencia Internacional Agroalimentario ceiA3, University of Almeria, 04120 Almeria, Spain
| | - Francisco Javier Las Heras-Vázquez
- Department of Chemistry and Physics, University of Almeria, Building CITE 1, Carretera de Sacramento s/n, La Cañada de San Urbano, 04120 Almeria, Spain; (J.M.C.-J.); (F.R.-V.)
- Campus de Excelencia Internacional Agroalimentario ceiA3, University of Almeria, 04120 Almeria, Spain
| |
Collapse
|
5
|
Rodgers TM, Muzzio N, Valero A, Ahmad I, Lüdtke TU, Moya SE, Romero G. Poly (β-amino Ester) Nanoparticles Modified with a Rabies Virus-derived peptide for the Delivery of ASCL1 Across a 3D In Vitro Model of the Blood Brain Barrier. ACS Appl Nano Mater 2023; 6:6299-6311. [PMID: 37274933 PMCID: PMC10234607 DOI: 10.1021/acsanm.3c00651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Gene editing has emerged as a therapeutic approach to manipulate the genome for killing cancer cells, protecting healthy tissues, and improving immune response to a tumor. The gene editing tool achaete-scute family bHLH transcription factor 1 CRISPR guide RNA (ASCL1-gRNA) is known to restore neuronal lineage potential, promote terminal differentiation, and attenuate tumorigenicity in glioblastoma tumors. Here, we fabricated a polymeric nonviral carrier to encapsulate ASCL1-gRNA by electrostatic interactions and deliver it into glioblastoma cells across a 3D in vitro model of the blood-brain barrier (BBB). To mimic rabies virus (RV) neurotropism, gene-loaded poly (β-amino ester) nanoparticles are surface functionalized with a peptide derivative of rabies virus glycoprotein (RVG29). The capability of the obtained NPs, hereinafter referred to as RV-like NPs, to travel across the BBB, internalize into glioblastoma cells and deliver ASCL1-gRNA are investigated in a 3D BBB in vitro model through flow cytometry and CLSM microscopy. The formation of nicotinic acetylcholine receptors in the 3D BBB in vitro model is confirmed by immunochemistry. These receptors are known to bind to RVG29. Unlike Lipofectamine that primarily internalizes and transfects endothelial cells, RV-like NPs are capable to travel across the BBB, preferentially internalize glioblastoma cells and deliver ASCL1-gRNA at an efficiency of 10 % causing non-cytotoxic effects.
Collapse
Affiliation(s)
- Tina M Rodgers
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, Texas, 78249, USA
| | - Nicolas Muzzio
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, Texas, 78249, USA
| | - Andrea Valero
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, Texas, 78249, USA
| | - Ikram Ahmad
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, Texas, 78249, USA
| | - Tanja Ursula Lüdtke
- Soft Matter Nanotechnology, CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo Miramon 182, Donostia/San Sebastian, Gipuzkoa, 20014 Spain
| | - Sergio E Moya
- Soft Matter Nanotechnology, CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo Miramon 182, Donostia/San Sebastian, Gipuzkoa, 20014 Spain
| | - Gabriela Romero
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, Texas, 78249, USA
| |
Collapse
|
6
|
Salvador C, Andreozzi P, Romero G, Loinaz I, Dupin D, Moya SE. Self-Assembled Oleic Acid-Modified Polyallylamines for Improved siRNA Transfection Efficiency and Lower Cytotoxicity. ACS Appl Bio Mater 2023; 6:529-542. [PMID: 36647574 PMCID: PMC9945087 DOI: 10.1021/acsabm.2c00845] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Small interference RNA (siRNA) is a tool for gene modulation, which can silence any gene involved in genetic disorders. The potential of this therapeutic tool is hampered by RNA instability in the blood stream and difficulties to reach the cytosol. Polyamine-based nanoparticles play an important role in gene delivery. Polyallylamine hydrochloride (PAH) is a polycation displaying primary amines that can be easily chemically modified to match the balance between cell viability and siRNA transfection. In this work, PAH has been covalently functionalized with oleic acid at different molar ratios by carbodiimide chemistry. The substituted polymers form polyplexes that keep positive surface charge and fully encapsulate siRNA. Oleic acid substitution improves cell viability in the pulmonary cell line A549. Moreover, 6 and 14% of oleic acid substitution show an improvement in siRNA transfection efficiency. CD47 is a ubiquitous protein which acts as "don't eat me signal." SIRPα protein of macrophages recognizes CD47, leading to tumor cell phagocytosis by macrophages. By knocking down CD47 with siRNA, cancer cells become vulnerable to be eliminated by the immune system. PAH-oleic acid substitutes show high efficacy in silencing the CD47 protein, making them a potential candidate for immunotherapy.
Collapse
Affiliation(s)
- Cristian Salvador
- CIC
biomaGUNE, Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián20014, Spain,CIDETEC,
Basque Research and Technology Alliance (BRTA), Parque Científico
y Tecnológico de Gipuzkoa, Miramon Pasealekua, 196, Donostia-San Sebastián20014, Spain
| | - Patrizia Andreozzi
- Consorzio
Sistemi a Grande Interfase, Department of Chemistry ‘Ugo Schiff’, University of Florence, Via della Lastruccia 3, Sesto Fiorentino50019, Florence, Italy
| | - Gabriela Romero
- Department
of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio78249, Texas, United States
| | - Iraida Loinaz
- CIDETEC,
Basque Research and Technology Alliance (BRTA), Parque Científico
y Tecnológico de Gipuzkoa, Miramon Pasealekua, 196, Donostia-San Sebastián20014, Spain
| | - Damien Dupin
- CIDETEC,
Basque Research and Technology Alliance (BRTA), Parque Científico
y Tecnológico de Gipuzkoa, Miramon Pasealekua, 196, Donostia-San Sebastián20014, Spain,. Phone: +34 943 30 90 22
| | - Sergio E. Moya
- CIC
biomaGUNE, Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián20014, Spain,. Phone: +34 943 00 53 11
| |
Collapse
|
7
|
Romero G, Park J, Koehler F, Pralle A, Anikeeva P. Modulating cell signalling in vivo with magnetic nanotransducers. Nat Rev Methods Primers 2022; 2:92. [PMID: 38111858 PMCID: PMC10727510 DOI: 10.1038/s43586-022-00170-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/15/2022] [Indexed: 12/20/2023]
Abstract
Weak magnetic fields offer nearly lossless transmission of signals within biological tissue. Magnetic nanomaterials are capable of transducing magnetic fields into a range of biologically relevant signals in vitro and in vivo. These nanotransducers have recently enabled magnetic control of cellular processes, from neuronal firing and gene expression to programmed apoptosis. Effective implementation of magnetically controlled cellular signalling relies on careful tailoring of magnetic nanotransducers and magnetic fields to the responses of the intended molecular targets. This primer discusses the versatility of magnetic modulation modalities and offers practical guidelines for selection of appropriate materials and field parameters, with a particular focus on applications in neuroscience. With recent developments in magnetic instrumentation and nanoparticle chemistries, including those that are commercially available, magnetic approaches promise to empower research aimed at connecting molecular and cellular signalling to physiology and behaviour in untethered moving subjects.
Collapse
Affiliation(s)
- Gabriela Romero
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, San Antonio, TX, USA
| | - Jimin Park
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, USA
- McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Florian Koehler
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, USA
- McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Arnd Pralle
- Department of Physics, University at Buffalo, the State University of New York, Buffalo, NY, USA
| | - Polina Anikeeva
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, USA
- McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA
| |
Collapse
|
8
|
Muzzio N, Eduardo Martinez-Cartagena M, Romero G. Soft nano and microstructures for the photomodulation of cellular signaling and behavior. Adv Drug Deliv Rev 2022; 190:114554. [PMID: 36181993 DOI: 10.1016/j.addr.2022.114554] [Citation(s) in RCA: 4] [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: 01/31/2022] [Revised: 08/25/2022] [Accepted: 09/23/2022] [Indexed: 01/24/2023]
Abstract
Photoresponsive soft materials are everywhere in the nature, from human's retina tissues to plants, and have been the inspiration for engineers in the development of modern biomedical materials. Light as an external stimulus is particularly attractive because it is relatively cheap, noninvasive to superficial biological tissues, can be delivered contactless and offers high spatiotemporal control. In the biomedical field, soft materials that respond to long wavelength or that incorporate a photon upconversion mechanism are desired to overcome the limited UV-visible light penetration into biological tissues. Upon light exposure, photosensitive soft materials respond through mechanisms of isomerization, crosslinking or cleavage, hyperthermia, photoreactions, electrical current generation, among others. In this review, we discuss the most recent applications of photosensitive soft materials in the modulation of cellular behavior, for tissue engineering and regenerative medicine, in drug delivery and for phototherapies.
Collapse
Affiliation(s)
- Nicolas Muzzio
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, TX 78249, USA.
| | | | - Gabriela Romero
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, TX 78249, USA.
| |
Collapse
|
9
|
Salama G, Palma J, Gabris-Weber B, MacMahon B, Kuhn B, Dschietzig T, Romero G. The therapeutic potential of relaxin for heart failure with preserved ejection fraction. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.777] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background and significance
Heart Failure (HF) is the leading cause of cardiovascular deaths and ∼50% of HF patients have HF with preserved ejection Fraction (HFpEF). HFpEF patients typically have co-morbidities such as atrial fibrillation (AF), diabetes, lung edema and hypertension. The latter is a predictor of mortality and is targeted to prolong survival given the lack of a direct therapy for HFpEF. To address this unmet public health problem, we investigate the therapeutic potential of the insulin-like hormone Relaxin (RLX) in a rat model of HFpEF that recapitulates most aspects of clinical HFpEF.
Methods
ZSF1 diabetic rats were placed on a high fat diet (HFD for 11-weeks) and echocardiograms were used to track HFpEF development. At week 20, osmotic mini-pumps were implanted to release vehicle (Na-acetate) or RLX (400μg/kg/day, 2-weeks). Hearts were then perfused with a voltage-sensitive dye (RH237) and a Ca2+ indicator (Rhod-2/AM) to optically map action potentials and Ca2+ transients and analyze arrhythmia phenotype. Left ventricular (LV) tissue sections were used for immune-fluorescence (IF) imaging for changes in fibrosis (collagen 1), connexin 43, Wnt1 and β-catenin in LV myocytes. Blood draws were taken to measure changes in serum NT-pro-ANP, ET-1 and RLX.
Results
ZSF1 rats on a HFD developed HFpEF with E/e' (an echo marker of diastolic dysfunction) decreasing to −24.4 from −17.9 MV (n=12) and was reversed to −18.6 MV by RLX (n=6, p<0.0001). In HFpEF rats that received the vehicle (n=6), a premature stimulus (S1-S2= 40 ms) elicited: a) no arrhythmia b) non-sustained AF or c) sustained AF, with (1/3 of rats in each group). RLX blocked sustained supraventricular (n=0/12) and n=4/12 had non-sustained AF. RLX improved conduction velocity (CV), at short cycle lengths (150 ms) from 0.74 to 0.9 m/s (n=4/group). IF indicated that RLX increased Cx43 (26.8±0.03%, p<0.0001, n=6), and β-catenin (52.8±0.05%, p<0.0001) at intercalated disks. RLX reduced collagen deposition in HFpEF rats (25±0.04%, p<0.04, back to normal) and caused a marked increase of cytosolic Wnt1 (47.3±0.06%, p<0.0001). IF data are given as mean ± SEM.
Conclusions
The ZSF1 diabetic rat on a high-fat diet recapitulates most of the phenotypes associated with human HFpEF, including atrial arrhythmias, fibrosis, and lung edema. RLX treatment post-development of HFpEF reversed the pro-arrhythmic phenotype, increased conduction velocity particularly at fast heart rates, reversed fibrosis, reduced NT-pro-ANP and ET-1 in male rats. Most intriguing, RLX treatment activated Wnt1 and β-catenin indicating that the beneficial actions of RLX occur via genomic remodeling of the heart.
Funding Acknowledgement
Type of funding sources: Private company. Main funding source(s): Relaxera Pharmazeutische Gesellschaft mbH & Co. KGStubenwald-Allee 8a, 64625 Bensheim, Germany & Uhlandstraße 4-5, 10623 Berlin, Germany
Collapse
Affiliation(s)
- G Salama
- Upmc University of Pittsburgh Medical Center , Pittsburgh , United States of America
| | - J Palma
- Upmc University of Pittsburgh Medical Center , Pittsburgh , United States of America
| | - B Gabris-Weber
- Upmc University of Pittsburgh Medical Center , Pittsburgh , United States of America
| | - B MacMahon
- Upmc University of Pittsburgh Medical Center , Pittsburgh , United States of America
| | - B Kuhn
- Upmc University of Pittsburgh Medical Center , Pittsburgh , United States of America
| | - T Dschietzig
- Upmc University of Pittsburgh Medical Center , Pittsburgh , United States of America
| | - G Romero
- Upmc University of Pittsburgh Medical Center , Pittsburgh , United States of America
| |
Collapse
|
10
|
Attia M, Glickman RD, Romero G, Chen B, Brenner AJ, Ye JY. Optimized metal-organic-framework based magnetic nanocomposites for efficient drug delivery and controlled release. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
11
|
Guntnur RT, Muzzio N, Gomez A, Macias S, Galindo A, Ponce A, Romero G. On-Demand Chemomagnetic Modulation of Striatal Neurons Facilitated by Hybrid Magnetic Nanoparticles. Adv Funct Mater 2022; 32:2204732. [PMID: 36339020 PMCID: PMC9635318 DOI: 10.1002/adfm.202204732] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Indexed: 06/15/2023]
Abstract
Minimally invasive manipulation of cell signaling is critical in basic neuroscience research and in developing therapies for neurological disorders. Here, we describe a wireless chemomagnetic neuromodulation platform for the on-demand control of primary striatal neurons that relies on nanoscale heating events. Iron oxide magnetic nanoparticles (MNPs) are functionally coated with thermoresponsive poly (oligo (ethylene glycol) methyl ether methacrylate) (POEGMA) brushes loaded with dopamine. Dopamine loaded MNPs-POEGMA are co-cultured with primary striatal neurons. When alternating magnetinec fields (AMF) are applied, MNPs undergo hysteresis power loss and dissipate heat. The local heat produced by MNPs initiates a thermodynamic phase transition on POEGMA brushes resulting in polymer collapse and dopamine release. AMF-triggered dopamine release enhances the response of dopamine ion channels expressed on the cell membranes enhancing the activity of ~50% of striatal neurons subjected to the treatment. Chemomagnetic actuation on dopamine receptors is confirmed by blocking D1 and D2 receptors. The reversible thermodynamic phase transition of POEGMA brushes allow the on-demand release of dopamine in multiple microdoses. AMF-triggered dopamine release from MNPs-POEGMA causes no cell cytotoxicity nor promotes cell ROS production. This research represents a fundamental step forward for the chemomagnetic control of neural activity using hybrid magnetic nanomaterials with tailored physical properties.
Collapse
Affiliation(s)
- Rohini Thevi Guntnur
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio; San Antonio, TX 78249, USA
| | - Nicolas Muzzio
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio; San Antonio, TX 78249, USA
| | - Amanda Gomez
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio; San Antonio, TX 78249, USA
| | - Sean Macias
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio; San Antonio, TX 78249, USA
| | - Arturo Galindo
- Department of Physics and Astronomy, The University of Texas at San Antonio; San Antonio, TX 78249, USA
| | - Arturo Ponce
- Department of Physics and Astronomy, The University of Texas at San Antonio; San Antonio, TX 78249, USA
| | - Gabriela Romero
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio; San Antonio, TX 78249, USA
| |
Collapse
|
12
|
Santos RA, Del Rio R, Alvarez AD, Romero G, Vo BZ, Cohen-Cory S. DSCAM is differentially patterned along the optic axon pathway in the developing Xenopus visual system and guides axon termination at the target. Neural Dev 2022; 17:5. [PMID: 35422013 PMCID: PMC9011933 DOI: 10.1186/s13064-022-00161-9] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 03/17/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
The Xenopus retinotectal circuit is organized topographically, where the dorsal–ventral axis of the retina maps respectively on to the ventral-dorsal axis of the tectum; axons from the nasal-temporal axis of the retina project respectively to the caudal-rostral axis of the tectum. Studies throughout the last two decades have shown that mechanisms involving molecular recognition of proper termination domains are at work guiding topographic organization. Such studies have shown that graded distribution of molecular cues is important for topographic mapping. However, the complement of molecular cues organizing topography along the developing optic nerve, and as retinal axons cross the chiasm and navigate towards and innervate their target in the tectum, remains unknown. Down syndrome cell adhesion molecule (DSCAM) has been characterized as a key molecule in axon guidance, making it a strong candidate involved in the topographic organization of retinal fibers along the optic path and at their target.
Methods
Using a combination of whole-brain clearing and immunohistochemistry staining techniques we characterized DSCAM expression and the projection of ventral and dorsal retinal fibers starting from the eye, following to the optic nerve and chiasm, and into the terminal target in the optic tectum in Xenopus laevis tadpoles. We then assessed the effects of DSCAM on the establishment of retinotopic maps through spatially and temporally targeted DSCAM knockdown on retinal ganglion cells (RGCs) with axons innervating the optic tectum.
Results
Highest expression of DSCAM was localized to the ventral posterior region of the optic nerve and chiasm; this expression pattern coincides with ventral fibers derived from ventral RGCs. Targeted downregulation of DSCAM expression on ventral RGCs affected the segregation of medial axon fibers from their dorsal counterparts within the tectal neuropil, indicating that DSCAM plays a role in retinotopic organization.
Conclusion
These findings together with previous studies demonstrating cell-autonomous roles for DSCAM during the development of pre- and postsynaptic arbors in the Xenopus retinotectal circuit indicates that DSCAM exerts multiple roles in coordinating axon targeting and structural connectivity in the developing vertebrate visual system.
Collapse
|
13
|
Collier C, Muzzio N, Thevi Guntnur R, Gomez A, Redondo C, Zurbano R, Schuller IK, Monton C, Morales R, Romero G. Wireless Force‐Inducing Neuronal Stimulation Mediated by High Magnetic Moment Microdiscs (Adv. Healthcare Mater. 6/2022). Adv Healthc Mater 2022. [DOI: 10.1002/adhm.202270033] [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: 11/12/2022]
|
14
|
Collier C, Muzzio N, Guntnur RT, Gomez A, Redondo C, Zurbano R, Schuller IK, Monton C, Morales R, Romero G. Wireless Force-Inducing Neuronal Stimulation Mediated by High Magnetic Moment Microdiscs. Adv Healthc Mater 2022; 11:e2101826. [PMID: 34890130 PMCID: PMC9583708 DOI: 10.1002/adhm.202101826] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [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: 08/31/2021] [Revised: 11/24/2021] [Indexed: 01/03/2023]
Abstract
Noninvasive manipulation of cell signaling is critical in basic neuroscience research and in developing therapies for neurological disorders and psychiatric conditions. Here, the wireless force-induced stimulation of primary neuronal circuits through mechanotransduction mediated by magnetic microdiscs (MMDs) under applied low-intensity and low-frequency alternating magnetic fields (AMFs), is described. MMDs are fabricated by top-down lithography techniques that allow for cost-effective mass production of biocompatible MMDs with high saturation and zero magnetic magnetic moment at remanence. MMDs are utilized as transducers of AMFs into mechanical forces. When MMDs are exposed to primary rat neuronal circuits, their magneto-mechanical actuation triggers the response of specific mechanosensitive ion channels expressed on the cell membranes activating ≈50% of hippocampal and ≈90% of cortical neurons subjected to the treatment. Mechanotransduction is confirmed by the inhibition of mechanosensitive transmembrane channels with Gd3+ . Mechanotransduction mediated by MMDs cause no cytotoxic effect to neuronal cultures. This technology fulfills the requirements of cell-type specificity and weak magnetic fields, two limiting factors in the development of noninvasive neuromodulation therapies and clinical equipment design. Moreover, high efficiency and long-lasting stimulations are successfully achieved. This research represents a fundamental step forward for magneto-mechanical control of neural activity using disc-shaped micromaterials with tailored magnetic properties.
Collapse
Affiliation(s)
- Claudia Collier
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, TX 78249, USA
| | - Nicolas Muzzio
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, TX 78249, USA
| | - Rohini Thevi Guntnur
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, TX 78249, USA
| | - Amanda Gomez
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, TX 78249, USA
| | - Carolina Redondo
- Department of Physical Chemistry, University of the Basque Country UPV/EHU, Leioa 48940, Spain
| | - Raquel Zurbano
- Department of Physical Chemistry, University of the Basque Country UPV/EHU, Leioa 48940, Spain
| | - Ivan K. Schuller
- Center for Advanced Nanoscience and Department of Physics, University of California San Diego, La Jolla, CA 92093, USA
| | - Carlos Monton
- General Atomics, PO Box 85608, San Diego, CA 92186, USA
| | - Rafael Morales
- Department of Physical Chemistry & BCMaterials, University of the Basque Country UPV/EHU, Leioa 48940, Spain,IKERBASQUE, Basque Foundation for Science, Bilbao 48011, Spain
| | - Gabriela Romero
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, TX 78249, USA
| |
Collapse
|
15
|
Martínez M, Rodríguez M, Saraullo V, Irazu L, Hamer M, Watanabe O, Loffler SG, Romero G, Samartino L, Brihuega B. Comparison of ELISA using recombinant LipL32 and sonicated antigen of leptospira for detecting bovine leptospirosis. Acta Trop 2022; 225:106214. [PMID: 34687641 DOI: 10.1016/j.actatropica.2021.106214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 07/15/2021] [Accepted: 10/06/2021] [Indexed: 11/01/2022]
Abstract
Leptospirosis is one of the most widely distributed zoonosis in the world. Bovine leptospirosis is a serious problem in bovine production, causing reproductive losses. The aim of this work was to compare recombinant LipL32 with sonicated antigen for detecting anti-Leptospira IgG antibodies in bovine serum using ELISA. The Microscopic Agglutination Test (MAT) is used as the gold standard. Sonicated antigen from cultures of Leptospira interrogans serogroup Icterohaemorrhagiae serovar copenhageni (strain M20) was used for the eELISA and rLipL32 for the rELISA. The performance of these assays was evaluated using serum samples from 166 bovines, 69 MAT positive and 97 MAT negative. At the optimal cut-off point recommended by the receiver operating characteristic (ROC) curve analysis, the sensitivity and specificity values were 98.6% and 97.9%, respectively, for eELISA, and 85.5% and 86.6% respectively, for rELISA. The value for the area under the ROC curve was 0.998 (0.994-1.0) (CI 95%) for eELISA and 0.929 (0.891-0.968) (CI 95%) for rELISA. The ROC curves for rLipL32 and sonicated antigen showed statistically significant differences (z = -3.826; p = 0.000). A three-way comparison showed statistically significant differences in the sensitivity and specificity of rELISA and eELISA. Our results showed that eELISA was more specific and sensitive than rELISA. The difference in performance (eELISA-rELISA) was 13.4% (4.03-23.28) (CI 95%) for sensitivity and 11.34 % (4.07-19.56) (CI 95%) for specificity. Our results show that the eELISA has a better diagnostic performance than rELISA for the detection of anti-Leptospira IgG antibodies in bovine serum.
Collapse
|
16
|
Jiménez GL, Thevi Guntnur R, Guiliani J, Romero G. Enhancing magnetic hyperthermia in ferrite nanoparticles through shape anisotropy and surface hybridization. AIChE J 2021. [DOI: 10.1002/aic.17437] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Gloria L. Jiménez
- Department of Biomedical Engineering and Chemical Engineering University of Texas at San Antonio. One UTSA Circle San Antonio Texas USA
| | - Rohini Thevi Guntnur
- Department of Biomedical Engineering and Chemical Engineering University of Texas at San Antonio. One UTSA Circle San Antonio Texas USA
| | - Jason Guiliani
- Department of Physics and Astronomy University of Texas at San Antonio. One UTSA Circle San Antonio Texas USA
| | - Gabriela Romero
- Department of Biomedical Engineering and Chemical Engineering University of Texas at San Antonio. One UTSA Circle San Antonio Texas USA
| |
Collapse
|
17
|
Arnold F, Muzzio N, Patnaik SS, Finol EA, Romero G. Pentagalloyl Glucose-Laden Poly(lactide- co-glycolide) Nanoparticles for the Biomechanical Extracellular Matrix Stabilization of an In Vitro Abdominal Aortic Aneurysm Model. ACS Appl Mater Interfaces 2021; 13:25771-25782. [PMID: 34030437 DOI: 10.1021/acsami.1c05344] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The suppression of abdominal aortic aneurysm (AAA) growth by nonsurgical therapy is currently not an option, and AAA is considered an irreversible destructive disease. The formation and development of AAA is associated with the progressive deterioration of the aortic wall. Infiltrated macrophages and resident vascular smooth muscle cells oversecrete matrix metalloproteinases (MMPs), which cause the loss of crucial aortic extracellular matrix (ECM) components, thus weakening the aortic wall. Stabilization of the aortic ECM could enable the development of novel therapeutic options for preventing and reducing AAA progression. In the present work, we studied the biochemical and biomechanical interactions of pentagalloyl glucose (PGG) on mouse C2C12 myoblast cells. PGG is a naturally occurring ECM-stabilizing polyphenolic compound that has been studied in various applications, including vascular health, with promising results. With its known limitations of systemic administration, we also studied the administration of PGG when encapsulated within poly(lactide-co-glycolide) (PLGA) nanoparticles (NPs). Treatment with collagenase and elastase enzymes was used to mimic a pathway of degenerative effects seen in the pathogenesis of human AAA. PGG and PLGA(PGG) NPs were added to enzyme-treated cells in either a suppressive or preventative scenario. Biomolecular interactions were analyzed through cell viability, cell adhesion, reactive oxygen species (ROS) production, and MMP-2 and MMP-9 secretion. Biomechanical properties were studied through atomic force microscopy and quartz crystal microbalance with dissipation. Our results suggest that PGG or PLGA(PGG) NPs caused minor to no cytotoxic effects on the C2C12 cells. Both PGG and PLGA(PGG) NPs showed reduction in ROS and MMP-2 secretion if administered after enzymatic ECM degradation. A quantitative comparison of Young's moduli showed a significant recovery in the elastic properties of the cells treated with PGG or PLGA(PGG) NPs after enzymatic ECM degradation. This work provides preliminary support for the use of a pharmacological therapy for AAA treatment.
Collapse
Affiliation(s)
- Frances Arnold
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, Texas 78249, United States
| | - Nicolas Muzzio
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, Texas 78249, United States
| | - Sourav S Patnaik
- Department of Mechanical Engineering, The University of Texas at San Antonio, San Antonio, Texas 78249, United States
| | - Ender A Finol
- Department of Mechanical Engineering, The University of Texas at San Antonio, San Antonio, Texas 78249, United States
| | - Gabriela Romero
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, Texas 78249, United States
| |
Collapse
|
18
|
Muzzio N, Moya S, Romero G. Multifunctional Scaffolds and Synergistic Strategies in Tissue Engineering and Regenerative Medicine. Pharmaceutics 2021; 13:792. [PMID: 34073311 PMCID: PMC8230126 DOI: 10.3390/pharmaceutics13060792] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 05/17/2021] [Accepted: 05/20/2021] [Indexed: 12/20/2022] Open
Abstract
The increasing demand for organ replacements in a growing world with an aging population as well as the loss of tissues and organs due to congenital defects, trauma and diseases has resulted in rapidly evolving new approaches for tissue engineering and regenerative medicine (TERM). The extracellular matrix (ECM) is a crucial component in tissues and organs that surrounds and acts as a physical environment for cells. Thus, ECM has become a model guide for the design and fabrication of scaffolds and biomaterials in TERM. However, the fabrication of a tissue/organ replacement or its regeneration is a very complex process and often requires the combination of several strategies such as the development of scaffolds with multiple functionalities and the simultaneous delivery of growth factors, biochemical signals, cells, genes, immunomodulatory agents, and external stimuli. Although the development of multifunctional scaffolds and biomaterials is one of the most studied approaches for TERM, all these strategies can be combined among them to develop novel synergistic approaches for tissue regeneration. In this review we discuss recent advances in which multifunctional scaffolds alone or combined with other strategies have been employed for TERM purposes.
Collapse
Affiliation(s)
- Nicolas Muzzio
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249, USA;
| | - Sergio Moya
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo Miramon 182 C, 20014 Donostia-San Sebastian, Spain;
- NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614 Poznan, Poland
| | - Gabriela Romero
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249, USA;
| |
Collapse
|
19
|
Guntnur RT, Muzzio N, Morales M, Romero G. Phase transition characterization of poly(oligo(ethylene glycol)methyl ether methacrylate) brushes using the quartz crystal microbalance with dissipation. Soft Matter 2021; 17:2530-2538. [PMID: 33508060 PMCID: PMC7954969 DOI: 10.1039/d0sm02169e] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Heterogeneous non-linear poly(ethylene glycol) analogs, like poly(oligo(ethylene glycol)methyl ether methacrylate) (POEGMA), are of particular interest in the fabrication of smart biocompatible coatings as they undergo a reversible macromolecular rearrangement in response to external heat stimuli. The phase transition dynamics of POEGMA coatings in response to external temperature stimuli have been poorly investigated. The quartz crystal microbalance with dissipation (QCM-D) can be used to investigate the phase transition of these functional coatings as polymer brushes in a dynamic and noninvasive in situ measurement. POEGMA brushes with different thickness are synthesized from the surface of a QCM-D sensor following a living radical polymerization technique by varying the monomer molecular weight. Investigations on the thermoresponsive collapse and swelling of POEGMA brushes grafted from the surface of a QCM-D sensor reveal the reversible phase transition nature of these coatings. Furthermore, the potential of these smart coatings in the field of biotechnology was explored by investigating the absorption and desorption of a model drug. A pulsatile drug release profile triggered by an increase in temperature is observed from POEGMA brushes. POEGMA brushes have the potential to be utilized as polymer coatings for controlled and programable drug release.
Collapse
Affiliation(s)
- Rohini Thevi Guntnur
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio One UTSA Circle, San Antonio, Texas 78249, USA.
| | - Nicolas Muzzio
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio One UTSA Circle, San Antonio, Texas 78249, USA.
| | - Madison Morales
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio One UTSA Circle, San Antonio, Texas 78249, USA.
| | - Gabriela Romero
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio One UTSA Circle, San Antonio, Texas 78249, USA.
| |
Collapse
|
20
|
Romero G, Contreras LM, Aguirre C, Wilkesman J, Clemente-Jiménez JM, Rodríguez-Vico F, Las Heras-Vázquez FJ. Characterization of Cross-Linked Enzyme Aggregates of the Y509E Mutant of a Glycoside Hydrolase Family 52 β-xylosidase from G. stearothermophilus. Molecules 2021; 26:molecules26020451. [PMID: 33467076 PMCID: PMC7830863 DOI: 10.3390/molecules26020451] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/13/2021] [Accepted: 01/14/2021] [Indexed: 01/05/2023] Open
Abstract
Cross-linked enzyme aggregates (CLEAs) of the Y509E mutant of glycoside hydrolase family 52 β-xylosidase from Geobacillus stearothermophilus with dual activity of β-xylosidase and xylanase (XynB2Y509E) were prepared. Ammonium sulfate was used as the precipitant agent, and glutaraldehyde as cross-linking agent. The optimum conditions were found to be 90% ammonium sulfate, 12.5 mM glutaraldehyde, 3 h of cross-linking reaction at 25 °C, and pH 8.5. Under these (most effective) conditions, XynB2Y509E-CLEAs retained 92.3% of their original β-xylosidase activity. Biochemical characterization of both crude and immobilized enzymes demonstrated that the maximum pH and temperature after immobilization remained unchanged (pH 6.5 and 65 °C). Moreover, an improvement in pH stability and thermostability was also found after immobilization. Analysis of kinetic parameters shows that the K
m value of XynB2Y509E-CLEAs obtained was slightly higher than that of free XynB2Y509E (1.2 versus 0.9 mM). Interestingly, the xylanase activity developed by the mutation was also conserved after the immobilization process.
Collapse
Affiliation(s)
- Gabriela Romero
- Center for Environmental, Biological and Chemical Research, Experimental Faculty of Sciences and Technology, University of Carabobo, Valencia 2001, Venezuela; (G.R.); (L.M.C.); (J.W.)
| | - Lellys M. Contreras
- Center for Environmental, Biological and Chemical Research, Experimental Faculty of Sciences and Technology, University of Carabobo, Valencia 2001, Venezuela; (G.R.); (L.M.C.); (J.W.)
- Department of Chemistry and Physics, University of Almeria, Building CITE I, Carretera de Sacramento s/n, La Cañada de San Urbano, 04120 Almería, Spain; (J.M.C.-J.); (F.R.-V.)
| | - Carolina Aguirre
- Centro de Investigación en Biodiversidad y Ambientes Sustentables (CIBAS), Department of Environmental Chemistry, Faculty of Sciences, Universidad Católica de la Santísima Concepción, Casilla 297, Concepción 4090541, Chile;
| | - Jeff Wilkesman
- Center for Environmental, Biological and Chemical Research, Experimental Faculty of Sciences and Technology, University of Carabobo, Valencia 2001, Venezuela; (G.R.); (L.M.C.); (J.W.)
- Institute for Biochemistry, University of Applied Sciences Mannheim, Paul-Wittsack-Straße 10, D-68163 Mannheim, Germany
| | - Josefa María Clemente-Jiménez
- Department of Chemistry and Physics, University of Almeria, Building CITE I, Carretera de Sacramento s/n, La Cañada de San Urbano, 04120 Almería, Spain; (J.M.C.-J.); (F.R.-V.)
- Campus de Excelencia Internacional Agroalimentario ceiA3, University of Almeria, 04120 Almería, Spain
| | - Felipe Rodríguez-Vico
- Department of Chemistry and Physics, University of Almeria, Building CITE I, Carretera de Sacramento s/n, La Cañada de San Urbano, 04120 Almería, Spain; (J.M.C.-J.); (F.R.-V.)
- Campus de Excelencia Internacional Agroalimentario ceiA3, University of Almeria, 04120 Almería, Spain
| | - Francisco Javier Las Heras-Vázquez
- Department of Chemistry and Physics, University of Almeria, Building CITE I, Carretera de Sacramento s/n, La Cañada de San Urbano, 04120 Almería, Spain; (J.M.C.-J.); (F.R.-V.)
- Campus de Excelencia Internacional Agroalimentario ceiA3, University of Almeria, 04120 Almería, Spain
- Correspondence: ; Tel.: +34-950-015055
| |
Collapse
|
21
|
Affiliation(s)
- Binita Shrestha
- Department of Biomedical Engineering University of Texas at San Antonio One UTSA Circle San Antonio TX 78249 USA
| | - Liang Tang
- Department of Biomedical Engineering University of Texas at San Antonio One UTSA Circle San Antonio TX 78249 USA
| | - Gabriela Romero
- Department of Chemical Engineering University of Texas at San Antonio One UTSA Circle San Antonio TX 78249 USA
| |
Collapse
|
22
|
Chen JI, Bozzay ML, Monahan MF, Gryglewicz K, Romero G, Steding LH, Gleason LL, Karver MS. Life after loss: Comparing student service member/veteran and civilian mental health characteristics among individuals exposed to death by suicide. J Am Coll Health 2019; 67:197-206. [PMID: 29952727 DOI: 10.1080/07448481.2018.1469500] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 03/28/2018] [Accepted: 04/23/2018] [Indexed: 06/08/2023]
Abstract
OBJECTIVE This study evaluated the mental health characteristics and beliefs of student service members/veterans (SSM/Vs) who have been exposed to another's death by suicide. PARTICIPANTS A total of 39 SSM/Vs exposed to suicide and 32 SSM/Vs not exposed to suicide were sampled from a larger, epidemiological survey. An age- and gender-matched group of 39 civilian (C) students was drawn from a larger sample of individuals exposed to suicide. METHODS Data were collected as part of an Internet-based, campus needs survey that occurred in Fall 2014. Participants were asked to complete measures about suicide-related behaviors, suicide prevention, help-seeking, and demographics. RESULTS SSM/Vs exposed to suicide had more positive mental health/suicide prevention beliefs than SSM/Vs not exposed to suicide. Cs exposed to suicide were not significantly different from either group. Unique help-seeking patterns were also identified. CONCLUSIONS The current study identifies unique characteristics of SSM/Vs exposed to suicide that may inform prevention programming.
Collapse
Affiliation(s)
- Jason I Chen
- a HSR&D Center to Improve Veteran Involvement in Care , VA Portland Health Care System , Portland , OR , USA
- b Department of Psychiatry , Oregon Health & Science University , Portland , OR , USA
| | - Melanie L Bozzay
- c Department of Psychology, College of Arts and Science , University of South Florida , Tampa , FL , USA
| | - Maureen F Monahan
- c Department of Psychology, College of Arts and Science , University of South Florida , Tampa , FL , USA
| | - Kim Gryglewicz
- d School of Social Work, College of Health and Public Affairs , University of Central Florida , Orlando , FL , USA
| | - Gabriela Romero
- c Department of Psychology, College of Arts and Science , University of South Florida , Tampa , FL , USA
| | - Lindsey H Steding
- e The Center for Child & Adolescent Behavioral Health , Cognitive Behavior Institute , Cranberry Township , PA , USA
| | - LaDonna L Gleason
- f Department of Psychology, College of Arts and Sciences , University of South Carolina , Columbia , SC , USA
| | - Marc S Karver
- c Department of Psychology, College of Arts and Science , University of South Florida , Tampa , FL , USA
| |
Collapse
|
23
|
Bueso-Ródenas J, Romero G, Navarro A, Pérez E, Díaz JR. Effect of the pulsation type (alternate or simultaneous) on milk yield and health status of the mammary gland of Murciano-Granadina goats. J Dairy Sci 2019; 102:3339-3347. [PMID: 30772030 DOI: 10.3168/jds.2018-15286] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 12/17/2018] [Indexed: 11/19/2022]
Abstract
Recent research into how the pulsation type affects goat milking concluded that alternate pulsation (AP) and simultaneous pulsation (SP) similarly affect the milking efficiency (milking duration and milking fractioning) and teat end condition after milking when both pulsations are employed in short-term experiments. However, the use of SP in high pipeline milking machines led to higher vacuum fluctuations, which, in the long term, may entail a potential risk factor for the mammary gland health status. The aim of this work was to study how AP and SP affect the milk yield, mammary gland health status, and milk composition of goats in the long term, during a complete lactation period, in a high pipeline milking machine. With this objective, 100 Murciano-Granadina goats with similar parturition dates (4 ± 1 postpartum weeks) were divided into 2 similar groups (50 goats per group) according their parity, milk yield, mammary gland health status, and milking duration (after a 15-d pre-experimental period). Throughout the experimental period (7 mo), one group was milked using SP and the other group using AP. Every month, samplings were carried out of the variables related to sanitary status of the mammary gland, milk fractioning, milking duration, average and maximum milk flows, milk composition, teat end status, vacuum fluctuations at the short milk tube during milking, and pulsation tests. Results showed that the use of SP in a high pipeline milking machine showed higher vacuum fluctuations without involving any difference in the other variables studied. We concluded that the use of AP in the milking of Murciano-Granadina goats offers little improvement of the milking performance and increases the investment required for installation and maintenance of the milking machines.
Collapse
Affiliation(s)
- J Bueso-Ródenas
- Dpto. Producción Animal y Salud Pública, Universidad Católica de Valencia (UCV), C/Guillem de Castro 94, 46001 Valencia, Spain
| | - G Romero
- Dpto. Tecnología Agroalimentaria, Universidad Miguel Hernández (UMH), Ctra. de Beniel km 3.2., 03312 Orihuela (Alicante), Spain
| | - A Navarro
- Dpto. Tecnología Agroalimentaria, Universidad Miguel Hernández (UMH), Ctra. de Beniel km 3.2., 03312 Orihuela (Alicante), Spain
| | - E Pérez
- Dpto. Tecnología Agroalimentaria, Universidad Miguel Hernández (UMH), Ctra. de Beniel km 3.2., 03312 Orihuela (Alicante), Spain
| | - J R Díaz
- Dpto. Tecnología Agroalimentaria, Universidad Miguel Hernández (UMH), Ctra. de Beniel km 3.2., 03312 Orihuela (Alicante), Spain.
| |
Collapse
|
24
|
Muelas R, Martí de Olives A, Romero G, Díaz J, Sayas-Barberá M, Sendra E. Evaluation of individual lactic acid bacteria for the fermentation of goat milk: Quality parameters. Lebensm Wiss Technol 2018. [DOI: 10.1016/j.lwt.2018.09.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
25
|
Romero G, de Argila D, Ferrandiz L, Sánchez M, Vañó S, Taberner R, Pasquali P, de la Torre C, Alfageme F, Malvehy J, Moreno-Ramírez D. Practice Models in Teledermatology in Spain: Longitudinal Study, 2009-2014. Actas Dermo-Sifiliográficas (English Edition) 2018. [DOI: 10.1016/j.adengl.2018.06.013] [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] [Indexed: 11/26/2022] Open
|
26
|
Romero G, de Argila D, Ferrandiz L, Sánchez M, Vañó S, Taberner R, Pasquali P, de la Torre C, Alfageme F, Malvehy J, Moreno-Ramírez D. Modelos de práctica de la teledermatología en España. Estudio longitudinal 2009-2014. Actas Dermo-Sifiliográficas 2018; 109:624-630. [DOI: 10.1016/j.ad.2018.03.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 02/24/2018] [Accepted: 03/25/2018] [Indexed: 10/16/2022] Open
|
27
|
Abstract
We study quantum state transfer between two qubits coupled to a common quantum bus that is constituted by an ultrastrong coupled light-matter system. By tuning both qubit frequencies on resonance with a forbidden transition in the mediating system, we demonstrate a high-fidelity swap operation even though the quantum bus is thermally populated. We discuss a possible physical implementation in a realistic circuit QED scheme that leads to the multimode Dicke model. This proposal may have applications on hot quantum information processing within the context of ultrastrong coupling regime of light-matter interaction.
Collapse
Affiliation(s)
- F A Cárdenas-López
- Departamento de Física, Universidad de Santiago de Chile (USACH), Avenida Ecuador 3493, 9170124, Santiago, Chile. .,Center for the Development of Nanoscience and Nanotechnology, 9170124, Estación Central, Santiago, Chile.
| | - F Albarrán-Arriagada
- Departamento de Física, Universidad de Santiago de Chile (USACH), Avenida Ecuador 3493, 9170124, Santiago, Chile
| | - G Alvarado Barrios
- Departamento de Física, Universidad de Santiago de Chile (USACH), Avenida Ecuador 3493, 9170124, Santiago, Chile
| | - J C Retamal
- Departamento de Física, Universidad de Santiago de Chile (USACH), Avenida Ecuador 3493, 9170124, Santiago, Chile. .,Center for the Development of Nanoscience and Nanotechnology, 9170124, Estación Central, Santiago, Chile.
| | - G Romero
- Departamento de Física, Universidad de Santiago de Chile (USACH), Avenida Ecuador 3493, 9170124, Santiago, Chile.
| |
Collapse
|
28
|
Vigier S, Tassin C, Romero G, Girodet D, Zrounba P, Deneuve S. Day-care unit for rigid panendoscopy of the upper aerodigestive tract: A study of 436 procedures. Eur Ann Otorhinolaryngol Head Neck Dis 2017; 134:393-397. [PMID: 28552504 DOI: 10.1016/j.anorl.2017.05.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVES To assess the role of day-care management of upper aerodigestive tract (UADT) panendoscopy and to study criteria for conventional hospital admission and reasons for conversion. PATIENTS AND METHODS Retrospective study, from January 2011 to May 2013. Inclusion criteria UADT panendoscopy for carcinoma assessment. Study variables, age, gender, tumor location, reason for panendoscopy, TNM stage, previous external radiotherapy, home-to-hospital distance and Apfel, Detsky and ASA scores. A day-care and a conventional admission group were compared using Fisher's test for ASA score, student's test for age and Pearson's chi2 test for the other variables. RESULTS Four hundred and thirty-six panendoscopies were performed: 252 in day-care, including 4 cases of conversion and 184 with conventional admission. There were no significant differences between groups for age, gender, tumor location, TNM stage, reason for panendoscopy, previous external radiotherapy, home-to-hospital distance or Apfel score. A significant difference was observed for ASA score (P<0.0001) and Detsky score (P=0.03). In 39% of cases, the reason for hospital admission without criteria defined by the French Society of Anesthesia and Intensive Care Medicine (SFAR) and French Health Authority (HAS) was the patient's refusal of day care. In 10% of conventional admissions, day-care was not implemented because of psychosocial factors. CONCLUSION Day-care management is appropriate for UADT panendoscopy in selected patients. The reasons for the high rate of patient refusal should be studied.
Collapse
Affiliation(s)
- S Vigier
- Département de chirurgie oncologique, centre Léon-Bérard, 28, rue Laennec, 69008 Lyon, France
| | - C Tassin
- Département d'anesthésie réanimation, centre Léon-Bérard, 28, rue Laennec, 69008 Lyon, France
| | - G Romero
- Département d'anesthésie réanimation, centre Léon-Bérard, 28, rue Laennec, 69008 Lyon, France
| | - D Girodet
- Département de chirurgie oncologique, centre Léon-Bérard, 28, rue Laennec, 69008 Lyon, France
| | - P Zrounba
- Département de chirurgie oncologique, centre Léon-Bérard, 28, rue Laennec, 69008 Lyon, France
| | - S Deneuve
- Département de chirurgie oncologique, centre Léon-Bérard, 28, rue Laennec, 69008 Lyon, France.
| |
Collapse
|
29
|
Romero G, Cortina P. Buried Sutures to Facilitate the Closure of Facial Defects. Actas Dermosifiliogr 2017; 108:607-608. [PMID: 28504085 DOI: 10.1016/j.ad.2017.03.010] [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] [Received: 03/16/2017] [Accepted: 03/18/2017] [Indexed: 11/25/2022] Open
Affiliation(s)
- G Romero
- Servicio de Dermatología, Hospital General Universitario de Ciudad Real, Ciudad Real, España.
| | - P Cortina
- Servicio de Dermatología, Hospital General Universitario de Ciudad Real, Ciudad Real, España
| |
Collapse
|
30
|
Bozzay ML, O'Leary KN, De Nadai AS, Gryglewicz K, Romero G, Karver MS. Adolescent Depression: Differential Symptom Presentations in Deaf and Hard-of-Hearing Youth Using the Patient Health Questionnaire-9. J Deaf Stud Deaf Educ 2017; 22:195-203. [PMID: 28426888 DOI: 10.1093/deafed/enw099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 12/12/2016] [Indexed: 06/07/2023]
Abstract
The present study examined differences in symptom presentation in screening for pediatric depression via evaluation of the Patient Health Questionnaire-9 (PHQ-9). In particular, we examined whether PHQ-9 items function differentially among deaf and hard-of-hearing (DHH; n = 75) and hearing (n = 75) youth based on participants recruited from crisis assessment services. Multiple indicators multiple causes models were used to examine whether items of the PHQ-9 functioned differently between groups as well as whether there were group differences in the mean severity of depressive symptoms. Results indicate that DHH youth were more likely to endorse psychosomatic items, and less likely to endorse an affective item. These findings indicate that the PHQ-9 functions differently when used with DHH youth. Implications of these findings are discussed, including both for future work with the PHQ-9 and with regard to the conceptualization of depression across hearing groups.
Collapse
|
31
|
Cohen M, Romero G, Bas J, Ticchioni M, Rosenthal M, Lacroix R, Brunet C, Rico A, Pelletier J, Audoin B, Lebrun C. Monitoring CD27+ memory B-cells in neuromyelitis optica spectrum disorders patients treated with rituximab: Results from a bicentric study. J Neurol Sci 2017; 373:335-338. [PMID: 28131216 DOI: 10.1016/j.jns.2017.01.025] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 12/15/2016] [Accepted: 01/06/2017] [Indexed: 11/30/2022]
Abstract
BACKGROUND Rituximab (RTX) is increasingly used in the treatment of neuromyelitis optica spectrum disorder (NMO-SD). Administration regimen is not consensual as there is no reliable biomarker of RTX efficacy. In most cases, after induction, RTX is administered systematically every 6months. OBJECTIVE To assess efficacy and safety of a maintenance regimen based on CD19+ CD27+ memory B-cell (mBc) detection. METHODS We conducted a study in two French centers, including patients with NMO-SD who received an induction therapy with RTX. We compared the number of administered infusions, relapses and EDSS depending on two maintenance schemes (S1: administration of 1g RTX infusion every 6months or S2: a scheme based on regular mBc detection. 1g RTX was administered if mBc was >0.05%) RESULTS: 40 patients were included (mean age: 40.2years, F/M sex ratio: 5/1). Aquaporin-4 antibodies were positive in 75% patients. Under S1 regimen, all patients received 2 infusions per year, whereas under S2, they received 1.62 infusion per year. The mean interval between infusions under S2 was 7.4months, without decrease of clinical efficacy. CONCLUSION In our study, mBc-based administration of RTX allowed personalizing treatment administration and in several cases to lower the cumulative dose without loss of efficacy.
Collapse
Affiliation(s)
- M Cohen
- Department of Neurology, Hôpital Pasteur 2, Nice, France.
| | - G Romero
- Department of Neurology, Hôpital Pasteur 2, Nice, France
| | - J Bas
- Aix Marseille Univ, APHM, Hôpital de la Timone, Pôle de Neurosciences Cliniques, Service de Neurologie, 13005 Marseille, France
| | - M Ticchioni
- Department of Immunology, Hôpital l'Archet, Nice, France
| | - M Rosenthal
- Department of Immunology, Hôpital l'Archet, Nice, France
| | - R Lacroix
- Hematology and Vascular Biology Department, CHU La Conception, Assistance Publique-Hôpitaux de Marseille, Marseille, France
| | - C Brunet
- Hematology and Vascular Biology Department, CHU La Conception, Assistance Publique-Hôpitaux de Marseille, Marseille, France
| | - A Rico
- Aix Marseille Univ, APHM, Hôpital de la Timone, Pôle de Neurosciences Cliniques, Service de Neurologie, 13005 Marseille, France
| | - J Pelletier
- Aix Marseille Univ, APHM, Hôpital de la Timone, Pôle de Neurosciences Cliniques, Service de Neurologie, 13005 Marseille, France
| | - B Audoin
- Aix Marseille Univ, APHM, Hôpital de la Timone, Pôle de Neurosciences Cliniques, Service de Neurologie, 13005 Marseille, France
| | - C Lebrun
- Department of Neurology, Hôpital Pasteur 2, Nice, France
| |
Collapse
|
32
|
Romero G, Bueso-Ródenas J, Moya F, Alejandro M, Díaz J. Short communication: Effects of pulsation type (alternate and simultaneous) on mechanical milking of dairy goats (II)—Effect of milk pipeline height on the milking efficiency and status of teat-end in Murciano-Granadina goats. Small Rumin Res 2017. [DOI: 10.1016/j.smallrumres.2016.11.010] [Citation(s) in RCA: 3] [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: 10/20/2022]
|
33
|
Romero G, Roca A, Alejandro M, Muelas R, Díaz JR. Relationship of mammary gland health status and other noninfectious factors with electrical conductivity of milk in Manchega ewes. J Dairy Sci 2016; 100:1555-1567. [PMID: 28012619 DOI: 10.3168/jds.2016-11544] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 10/28/2016] [Indexed: 11/19/2022]
Abstract
Measuring the electrical conductivity (EC) of milk during milking has been extensively studied in cattle as a low-cost mastitis detection method that can be easily automated. The aim of this work was to study the effect of the health status of the glands and several noninfectious factors (lactation stage, milking session, and lactation number) that affect the use of EC measurement of milk to detect mastitis in dairy sheep livestock. Likewise, we studied the relation between EC and milk composition (macrocomposition and mineral content) and between EC and somatic cell count (SCC). Finally, we evaluated the use of EC thresholds as a mastitis detection method. To this end, we monitored the glandular milk EC throughout 2 consecutive lactations, during which 42 and 40 ewes were controlled, respectively. We carried out 7 biweekly checks, analyzing the EC, SCC, composition, and mineral content of glandular milk at morning and evening milkings. Before the morning milking, samples were aseptically collected for bacteriological analysis, and the results along with the SCC were used to classify the glands according to their sanitary status (healthy, latently infected, or infected). Lactation stage, parity, milking (morning or evening), health status, and the interactions of parity with health status, lactation stage with health status, and parity with lactation stage all had a significant effect on SCC and EC of the milk. The correlation between EC and SCC was only significant when all the data were analyzed jointly (r = 0.33) and for SCC ≥ 600.000 cells/mL (r = 0.25). The changes in milk composition, mainly in fat content, largely explained the variation in EC (R2 = 0.69). For the same EC threshold, the specificity and sensitivity varied depending on the parity or the milking, with the negative predictive value obtained being higher than the positive predictive value at all times. We concluded that developing methods of detecting mastitis in sheep by milk EC readings would require consideration of noninfectious factors that also affect the gauging of EC. One option to consider would be individualized daily monitoring of the glands, as demonstrated in other species such as cattle and goat.
Collapse
Affiliation(s)
- G Romero
- Dpto. Tecnología Agroalimentaria, Universidad Miguel Hernández (UMH), Ctra. de Beniel km 3.2, 03312 Orihuela, Spain
| | - A Roca
- Dpto. Tecnología Agroalimentaria, Universidad Miguel Hernández (UMH), Ctra. de Beniel km 3.2, 03312 Orihuela, Spain
| | - M Alejandro
- Dpto. Tecnología Agroalimentaria, Universidad Miguel Hernández (UMH), Ctra. de Beniel km 3.2, 03312 Orihuela, Spain
| | - R Muelas
- Dpto. Tecnología Agroalimentaria, Universidad Miguel Hernández (UMH), Ctra. de Beniel km 3.2, 03312 Orihuela, Spain
| | - J R Díaz
- Dpto. Tecnología Agroalimentaria, Universidad Miguel Hernández (UMH), Ctra. de Beniel km 3.2, 03312 Orihuela, Spain.
| |
Collapse
|
34
|
Bueso-Ródenas J, Tangorra F, Romero G, Guidobono-Cavalchini A, Díaz J. Effects of pulsation type (alternate and simultaneous) on mechanical milking of dairy goats (I): A study in Alpine goats varying the system vacuum level. Small Rumin Res 2016. [DOI: 10.1016/j.smallrumres.2016.10.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
35
|
Torres P, Vela C, Cervantes H, Zamora S, Romero G, Granados D. 69. An approximation to time–frequency analysis of the Mismatch Negativity (MMN) in children with language impairment. Clin Neurophysiol 2016. [DOI: 10.1016/j.clinph.2016.05.344] [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]
|
36
|
Vela C, Torres P, Cervantes H, Zamora S, Romero G, Granados D. 65. Description of the mismatch negativity (MMN) in Mexican children with Autism Spectrum Disorder. Clin Neurophysiol 2016. [DOI: 10.1016/j.clinph.2016.05.340] [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: 10/21/2022]
|
37
|
Zamora S, Torres P, Vela C, Castaneda N, Romero G, Granados D. 66. Preliminary analysis of Mismatch Negativity (MMN) in healthy preschool children. Clin Neurophysiol 2016. [DOI: 10.1016/j.clinph.2016.05.341] [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: 10/21/2022]
|
38
|
Pumar J, Castiñeira J, Vazquez F, Blanco M, Romero G, Baleato S, Ruibal C, Lazaro V. Spontaneous Regression of Intracranial Arteriovenous Malformations. Neuroradiol J 2016; 19:778-81. [DOI: 10.1177/197140090601900614] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2006] [Accepted: 12/04/2006] [Indexed: 11/16/2022] Open
Abstract
Spontaneous and complete regression of cerebral arteriovenous malformations has rarely been reported in the literature. We describe two new cases with a literature review.
Collapse
Affiliation(s)
- J.M. Pumar
- Department Radiology, Hospital Clinico Universitario; Santiago de Compostela, Spain
| | - J.A. Castiñeira
- Department Radiology, Hospital Clinico Universitario; Santiago de Compostela, Spain
| | - F. Vazquez
- Department Radiology, Hospital Clinico Universitario; Santiago de Compostela, Spain
| | - M. Blanco
- Department Radiology, Hospital Clinico Universitario; Santiago de Compostela, Spain
| | - G. Romero
- Department Radiology, Hospital Clinico Universitario; Santiago de Compostela, Spain
| | - S. Baleato
- Department Radiology, Hospital Clinico Universitario; Santiago de Compostela, Spain
| | - C. Ruibal
- Department Radiology, Hospital Clinico Universitario; Santiago de Compostela, Spain
| | - V. Lazaro
- Department Radiology, Hospital Clinico Universitario; Santiago de Compostela, Spain
| |
Collapse
|
39
|
Naylor CH, Kybert NJ, Schneier C, Xi J, Romero G, Saven JG, Liu R, Charlie Johnson AT. Scalable Production of Molybdenum Disulfide Based Biosensors. ACS Nano 2016; 10:6173-9. [PMID: 27227361 PMCID: PMC4949953 DOI: 10.1021/acsnano.6b02137] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [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] [Indexed: 05/25/2023]
Abstract
We demonstrate arrays of opioid biosensors based on chemical vapor deposition grown molybdenum disulfide (MoS2) field effect transistors (FETs) coupled to a computationally redesigned, water-soluble variant of the μ-opioid receptor (MOR). By transferring dense films of monolayer MoS2 crystals onto prefabricated electrode arrays, we obtain high-quality FETs with clean surfaces that allow for reproducible protein attachment. The fabrication yield of MoS2 FETs and biosensors exceeds 95%, with an average mobility of 2.0 cm(2) V(-1) s(-1) (36 cm(2) V(-1) s(-1)) at room temperature under ambient (in vacuo). An atomic length nickel-mediated linker chemistry enables target binding events that occur very close to the MoS2 surface to maximize sensitivity. The biosensor response calibration curve for a synthetic opioid peptide known to bind to the wild-type MOR indicates binding affinity that matches values determined using traditional techniques and a limit of detection ∼3 nM (1.5 ng/mL). The combination of scalable array fabrication and rapid, precise binding readout enabled by the MoS2 transistor offers the prospect of a solid-state drug testing platform for rapid readout of the interactions between novel drugs and their intended protein targets.
Collapse
Affiliation(s)
- Carl H. Naylor
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia 19104, United States
| | - Nicholas J. Kybert
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia 19104, United States
| | - Camilla Schneier
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia 19104, United States
| | - Jin Xi
- Department of Anesthesiology and Critical Care, University of Pennsylvania, Philadelphia 19104, United States
| | - Gabriela Romero
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia 19104, United States
| | - Jeffery G. Saven
- Department of Chemistry, University of Pennsylvania, Philadelphia 19104, United States
| | - Renyu Liu
- Department of Anesthesiology and Critical Care, University of Pennsylvania, Philadelphia 19104, United States
| | - A. T. Charlie Johnson
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia 19104, United States
| |
Collapse
|
40
|
Convit J, Montesinos H, Oviedo H, Romero G, Maccarone B, Essenfeld E, Convit A, Palacios LE. Erratum to: Autologous tumor lysate/Bacillus Calmette–Guérin immunotherapy as an adjuvant to conventional breast cancer therapy. Clin Transl Oncol 2016; 18:650. [PMID: 27094738 PMCID: PMC4969949 DOI: 10.1007/s12094-016-1513-1] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- J Convit
- Instituto de Biomedicina Dr. Jacinto Convit, Distrito Capital, Venezuela.
| | - H Montesinos
- Universidad Simón Bolívar, Sartenejas, Distrito Capital, Venezuela
| | - H Oviedo
- Instituto de Biomedicina Dr. Jacinto Convit, Distrito Capital, Venezuela
| | - G Romero
- Hospital Oncológico Dr. Luis Razetti, Distrito Capital, Venezuela
| | - B Maccarone
- Cirugía General & Mastología, Policlínica Metropolitana, Distrito Capital, Venezuela
| | - E Essenfeld
- Anatomía Patológica, Policlínica Metropolitana, Distrito Capital, Venezuela
| | - A Convit
- Fundación Jacinto Convit, Caracas, 1071, Venezuela
| | - L E Palacios
- Hospital Oncológico Dr. Luis Razetti, Distrito Capital, Venezuela
| |
Collapse
|
41
|
Romero G, Ticchioni M, Cohen M, Rosenthal-Allieri MA, Mondot L, Lebrun Frenay C. Neuromyelitis optica: Contribution of therapeutic responses markers monitoring in patients given rituximab. Rev Neurol (Paris) 2016; 172:220-4. [PMID: 26915311 DOI: 10.1016/j.neurol.2015.12.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 11/09/2015] [Accepted: 12/08/2015] [Indexed: 10/22/2022]
Abstract
Neuromyelitis optica (NMO) is a central nervous system inflammatory autoimmune disease characterized by medullary and/or optical nerve damage. It is rare but life-threatening. Concerning the treatment of NMO, many drugs have been used in background therapy. Some studies have shown efficacy of rituximab (an antiCD20 monoclonal anti-body) either on the reduction of the annual number of exacerbation or the mean score EDSS. In 2013, a Korean team reported a new protocol during which they administered rituximab only when memory B lymphocytes CD27+ were detectable in the bloodstream. In our patient, institution of this protocol led to clinical benefit with a major decrease in the EDSS score over time (7 in August 2012 vs. 1 in October 2015), a reduction of the total administered dose (4g in 2013 vs. 1.375g in 2014 vs. 0g in 2015) and side effects. Compared with the rate of theoretical administration, health expenditure savings reached 1700 Euros per month over the 11-month treatment. Monitoring therapeutic response markers with memory B lymphocyte counts appear to be an efficient cost-effective way to measure clinical efficiency, reduce total doses, and limit side effects.
Collapse
Affiliation(s)
- G Romero
- Service de neuro-onco-immunologie, hôpital Pasteur 2, CHU de Nice, 30, voie Romaine, 06002 Nice, France.
| | - M Ticchioni
- Service d'immunologie, hôpital de l'Archet 1, 151, route de Saint-Antoine-de-Ginestière, 06200 Nice, France
| | - M Cohen
- Service de neuro-onco-immunologie, hôpital Pasteur 2, CHU de Nice, 30, voie Romaine, 06002 Nice, France
| | - M A Rosenthal-Allieri
- Service d'immunologie, hôpital de l'Archet 1, 151, route de Saint-Antoine-de-Ginestière, 06200 Nice, France
| | - L Mondot
- Service de radiologie, hôpital Pasteur 2, CHU de Nice, 30, voie Romaine, 06002 Nice, France
| | - C Lebrun Frenay
- Service de neuro-onco-immunologie, hôpital Pasteur 2, CHU de Nice, 30, voie Romaine, 06002 Nice, France
| |
Collapse
|
42
|
Piccardi M, Romero G, Veneranda G, Castello E, Romero D, Balzarini M, Bó GA. Effect of puerperal metritis on reproductive and productive performance in dairy cows in Argentina. Theriogenology 2015; 85:887-893. [PMID: 26643603 DOI: 10.1016/j.theriogenology.2015.10.038] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Revised: 10/21/2015] [Accepted: 10/28/2015] [Indexed: 10/22/2022]
Abstract
The objectives of this study were to evaluate the reproductive and productive performance of dairy cows with and without puerperal metritis and to evaluate the effectiveness of using a long-acting ceftiofur preparation. Dairy cows in one dairy farm, calving from July 2009 to January 2010, were examined between 3 and 14 days postpartum and classified on the basis of vaginal discharge into three groups: cows with normal discharge (control; C); cows with a bloody mucus purulent or pathologic nonfetid discharge (PnFD), and cows with bloody mucopurulent or purulent fetid discharge (PFD). Cows in C and PnFD groups were not treated, whereas those in the PFD group were randomly allocated to receive 2.2 mg/kg of ceftiofur subcutaneously behind the ear (PFD-T) or remain untreated (PFD-No T). From the 640 cows examined, 58.2% formed the C group, 13.4% formed the PnFD group, and 28.4% formed the PFD group. Survival curves differed between cows in the C group and PFD-No T group (P = 0.0013) and between PFD-No T versus PFD-T group (P = 0.0006). Survival curves of PnFD were intermediate and did not differ from those in the C group (P = 0.2) and PFD-T group (P = 0.1) but tended to be different from the PFD-No T group (P = 0.056). The postpartum interval to achieve a 25% pregnancy rate was 72 days for cows in the C group, 73 days for the PFD-T group, 83 days for PnFD group, and 95 days for the PFD-No T group. The chance of pregnancy in a cow in the C group was 1.98 times higher (95% confidence interval = 1.33, 3.08) and in cows in the PFD-T group was 2.16 times higher (95% confidence interval = 1.37, 3.50) than that in the PFD-No T group. Finally, the chance of pregnancy in cows in the PnFD group tended to be higher (P = 0.08) than that in the PFD-No T group but did not differ from the other two groups. Cumulative 305-day milk production was higher (P < 0.0001) in C group than those with vaginal discharge, regardless of fetidness and regardless of treatment. It is concluded that puerperal metritis affects the reproductive and productive performance of dairy cows and the treatment with ceftiofur was effective in reducing the adverse effects on reproductive performance but not on milk production.
Collapse
Affiliation(s)
- M Piccardi
- Cátedra de Estadística y Biometría, Facultad de Ciencias Agropecuarias, Universidad Nacional de Córdoba, Córdoba, Argentina.
| | - G Romero
- La Sibila (Grupo Los Lazos S.A.), Santa Fe, Argentina
| | - G Veneranda
- La Sibila (Grupo Los Lazos S.A.), Santa Fe, Argentina
| | - E Castello
- La Sibila (Grupo Los Lazos S.A.), Santa Fe, Argentina
| | - D Romero
- Zoetis Argentina, Buenos Aires, Argentina
| | - M Balzarini
- Cátedra de Estadística y Biometría, Facultad de Ciencias Agropecuarias, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - G A Bó
- Instituto de Reproducción Animal Córdoba (IRAC), Córdoba, Argentina; Medicina Veterinaria, Instituto de Ciencias Básicas y Aplicadas, Universidad Nacional de Villa María, Córdoba, Argentina
| |
Collapse
|
43
|
Pedernales JS, Lizuain I, Felicetti S, Romero G, Lamata L, Solano E. Quantum Rabi Model with Trapped Ions. Sci Rep 2015; 5:15472. [PMID: 26482660 PMCID: PMC4611475 DOI: 10.1038/srep15472] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Accepted: 09/29/2015] [Indexed: 11/19/2022] Open
Abstract
We propose the quantum simulation of the quantum Rabi model in all parameter regimes by means of detuned bichromatic sideband excitations of a single trapped ion. We show that current setups can reproduce, in particular, the ultrastrong and deep strong coupling regimes of such a paradigmatic light-matter interaction. Furthermore, associated with these extreme dipolar regimes, we study the controlled generation and detection of their entangled ground states by means of adiabatic methods. Ion traps have arguably performed the first quantum simulation of the Jaynes-Cummings model, a restricted regime of the quantum Rabi model where the rotating-wave approximation holds. We show that one can go beyond and experimentally investigate the quantum simulation of coupling regimes of the quantum Rabi model that are difficult to achieve with natural dipolar interactions.
Collapse
Affiliation(s)
- J. S. Pedernales
- Department of Physical Chemistry, University of the Basque Country UPV/EHU, Apartado 644, 48080 Bilbao, Spain
| | - I. Lizuain
- Department of Applied Mathematics, University of the Basque Country UPV/EHU, Plaza Europa 1, 20018 Donostia-San Sebastian, Spain
| | - S. Felicetti
- Department of Physical Chemistry, University of the Basque Country UPV/EHU, Apartado 644, 48080 Bilbao, Spain
| | - G. Romero
- Departamento de Física, Universidad de Santiago de Chile (USACH), Avenida Ecuador 3493, 917-0124, Santiago, Chile
| | - L. Lamata
- Department of Physical Chemistry, University of the Basque Country UPV/EHU, Apartado 644, 48080 Bilbao, Spain
| | - E. Solano
- Department of Physical Chemistry, University of the Basque Country UPV/EHU, Apartado 644, 48080 Bilbao, Spain
- IKERBASQUE, Basque Foundation for Science, Maria Diaz de Haro 3, 48013 Bilbao, Spain
| |
Collapse
|
44
|
Loynachan CN, Romero G, Christiansen MG, Chen R, Ellison R, O'Malley TT, Froriep UP, Walsh DM, Anikeeva P. Alzheimer's Disease: Targeted Magnetic Nanoparticles for Remote Magnetothermal Disruption of Amyloid-β Aggregates (Adv. Healthcare Mater. 14/2015). Adv Healthc Mater 2015. [DOI: 10.1002/adhm.201570081] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Colleen N. Loynachan
- Department of Materials Science and Engineering; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Gabriela Romero
- Research Laboratory of Electronics; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Michael G. Christiansen
- Department of Materials Science and Engineering; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Ritchie Chen
- Department of Materials Science and Engineering; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Rachel Ellison
- Department of Materials Science and Engineering; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Tiernan T. O'Malley
- Laboratory for Neurodegenerative Research; Center for Neurologic Diseases Brigham and Women's Hospital and Harvard Medical School; Boston MA 02115 USA
| | - Ulrich P. Froriep
- Research Laboratory of Electronics; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Dominic M. Walsh
- Laboratory for Neurodegenerative Research; Center for Neurologic Diseases Brigham and Women's Hospital and Harvard Medical School; Boston MA 02115 USA
| | - Polina Anikeeva
- Department of Materials Science and Engineering; Massachusetts Institute of Technology; Cambridge MA 02139 USA
- Research Laboratory of Electronics; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| |
Collapse
|
45
|
Loynachan CN, Romero G, Christiansen MG, Chen R, Ellison R, O'Malley TT, Froriep UP, Walsh DM, Anikeeva P. Targeted Magnetic Nanoparticles for Remote Magnetothermal Disruption of Amyloid-β Aggregates. Adv Healthc Mater 2015; 4:2100-2109. [PMID: 26288378 DOI: 10.1002/adhm.201500487] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 07/21/2015] [Indexed: 01/23/2023]
Abstract
Remotely triggered hysteretic heat dissipation by magnetic nanoparticles (MNPs) selectively attached to targeted proteins can be used to break up self-assembled aggregates. This magnetothermal approach is applied to the amyloid-β (Aβ) protein, which forms dense, insoluble plaques characteristic of Alzheimer's disease. Specific targeting of dilute MNPs to Aβ aggregates is confirmed via transmission electron microscopy (TEM) and is found to be consistent with a statistical model of MNP distribution on the Aβ substrates. MNP composition and size are selected to achieve efficient hysteretic power dissipation at physiologically safe alternating magnetic field (AMF) conditions. Dynamic light scattering, fluorescence spectroscopy, and TEM are used to characterize the morphology and size distribution of aggregates before and after exposure to AMF. A dramatic reduction in aggregate size from microns to tens of nanometers is observed, suggesting that exposure to an AMF effectively destabilizes Aβ deposits decorated with targeted MNPs. Experiments in primary hippocampal neuronal cultures indicate that the magnetothermal disruption of aggregates reduces Aβ cytotoxicity, which may enable future applications of this approach for studies of protein disaggregation in physiological environments.
Collapse
Affiliation(s)
- Colleen N. Loynachan
- Department of Materials Science and Engineering; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Gabriela Romero
- Research Laboratory of Electronics; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Michael G. Christiansen
- Department of Materials Science and Engineering; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Ritchie Chen
- Department of Materials Science and Engineering; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Rachel Ellison
- Department of Materials Science and Engineering; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Tiernan T. O'Malley
- Laboratory for Neurodegenerative Research; Center for Neurologic Diseases Brigham and Women's Hospital and Harvard Medical School; Boston MA 02115 USA
| | - Ulrich P. Froriep
- Research Laboratory of Electronics; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Dominic M. Walsh
- Laboratory for Neurodegenerative Research; Center for Neurologic Diseases Brigham and Women's Hospital and Harvard Medical School; Boston MA 02115 USA
| | - Polina Anikeeva
- Department of Materials Science and Engineering; Massachusetts Institute of Technology; Cambridge MA 02139 USA
- Research Laboratory of Electronics; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| |
Collapse
|
46
|
Romero G, Lilly JJ, Abraham NS, Shin HY, Balasubramaniam V, Izumi T, Berron BJ. Protective Polymer Coatings for High-Throughput, High-Purity Cellular Isolation. ACS Appl Mater Interfaces 2015; 7:17598-602. [PMID: 26244409 PMCID: PMC4544319 DOI: 10.1021/acsami.5b06298] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [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] [Indexed: 05/04/2023]
Abstract
Cell-based therapies are emerging as the next frontier of medicine, offering a plausible path forward in the treatment of many devastating diseases. Critically, current methods for antigen positive cell sorting lack a high throughput method for delivering ultrahigh purity populations, prohibiting the application of some cell-based therapies to widespread diseases. Here we show the first use of targeted, protective polymer coatings on cells for the high speed enrichment of cells. Individual, antigen-positive cells are coated with a biocompatible hydrogel which protects the cells from a surfactant solution, while uncoated cells are immediately lysed. After lysis, the polymer coating is removed through orthogonal photochemistry, and the isolate has >50% yield of viable cells and these cells proliferate at rates comparable to control cells. Minority cell populations are enriched from erythrocyte-depleted blood to >99% purity, whereas the entire batch process requires 1 h and <$2000 in equipment. Batch scale-up is only contingent on irradiation area for the coating photopolymerization, as surfactant-based lysis can be easily achieved on any scale.
Collapse
Affiliation(s)
- Gabriela Romero
- Department of Chemical and Materials Engineering, Department of Biomedical Engineering, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Jacob J. Lilly
- Department of Chemical and Materials Engineering, Department of Biomedical Engineering, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Nathan S. Abraham
- Department
of Chemical Engineering, University of Massachusetts
Amherst, Amherst, Massachusetts 01003, United States
| | - Hainsworth Y. Shin
- Department of Chemical and Materials Engineering, Department of Biomedical Engineering, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Vivek Balasubramaniam
- Department
of Pediatrics, University of Wisconsin, Madison, Wisconsin 53792, United States
| | - Tadahide Izumi
- Graduate
Center for Toxicology, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Brad J. Berron
- Department of Chemical and Materials Engineering, Department of Biomedical Engineering, University of Kentucky, Lexington, Kentucky 40506, United States
- E-mail:
| |
Collapse
|
47
|
Romero G, Bueso-Ródenas J, Gascó M, Díaz J. Effect of automatic cluster removers (ACRs) on the milking of Murciano-Granadina goats during lactation. Small Rumin Res 2015. [DOI: 10.1016/j.smallrumres.2015.05.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
48
|
Bueso-Ródenas J, Romero G, Arias R, Rodríguez A, Díaz J. Effect of automatic cluster removers on milking efficiency and teat condition of Manchega ewes. J Dairy Sci 2015; 98:3887-95. [DOI: 10.3168/jds.2014-9098] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Accepted: 03/04/2015] [Indexed: 11/19/2022]
|
49
|
|
50
|
Kyaw TH, Felicetti S, Romero G, Solano E, Kwek LC. Scalable quantum memory in the ultrastrong coupling regime. Sci Rep 2015; 5:8621. [PMID: 25727251 PMCID: PMC4345319 DOI: 10.1038/srep08621] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 01/27/2015] [Indexed: 11/09/2022] Open
Abstract
Circuit quantum electrodynamics, consisting of superconducting artificial atoms coupled to on-chip resonators, represents a prime candidate to implement the scalable quantum computing architecture because of the presence of good tunability and controllability. Furthermore, recent advances have pushed the technology towards the ultrastrong coupling regime of light-matter interaction, where the qubit-resonator coupling strength reaches a considerable fraction of the resonator frequency. Here, we propose a qubit-resonator system operating in that regime, as a quantum memory device and study the storage and retrieval of quantum information in and from the Z2 parity-protected quantum memory, within experimentally feasible schemes. We are also convinced that our proposal might pave a way to realize a scalable quantum random-access memory due to its fast storage and readout performances.
Collapse
Affiliation(s)
- T H Kyaw
- Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, Singapore 117543, Singapore
| | - S Felicetti
- Department of Physical Chemistry, University of the Basque Country UPV/EHU, Apartado 644, E-48080 Bilbao, Spain
| | - G Romero
- Department of Physical Chemistry, University of the Basque Country UPV/EHU, Apartado 644, E-48080 Bilbao, Spain
| | - E Solano
- 1] Department of Physical Chemistry, University of the Basque Country UPV/EHU, Apartado 644, E-48080 Bilbao, Spain [2] IKERBASQUE, Basque Foundation for Science, Maria Diaz de Haro 3, 48013 Bilbao, Spain
| | - L-C Kwek
- 1] Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, Singapore 117543, Singapore [2] Institute of Advanced Studies, Nanyang Technological University, 60 Nanyang View, Singapore 639673, Singapore [3] National Institute of Education, Nanyang Technological University, 1 Nanyang Walk, Singapore 637616, Singapore
| |
Collapse
|