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Lejwoda K, Gumieniczek A, Filip A, Naumczuk B. The Study on Timolol and Its Potential Phototoxicity Using Chemical, In Silico and In Vitro Methods. Pharmaceuticals (Basel) 2024; 17:98. [PMID: 38256931 PMCID: PMC10818944 DOI: 10.3390/ph17010098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 12/30/2023] [Accepted: 01/06/2024] [Indexed: 01/24/2024] Open
Abstract
Timolol (TIM) is a non-selective ß-adrenergic receptor antagonist used orally for the treatment of hypertension and heart attacks, and topically for treating glaucoma; lately, it has also been used in some specific dermatological problems. In the present study, its photodegradation and potential risk of phototoxicity were examined using chemical, in silico and in vitro methods. The UV/VIS irradiated solutions of TIM at pH 1-13 were subjected to LC-UV and UPLC-HRMS/MS analyses showing pseudo first-order kinetics of degradation and several degradation products. The structures of these photodegradants were elucidated by fragmentation path analysis based on high resolution (HR) fragmentation mass spectra, and then used for toxicity evaluation using OSIRIS Property Explorer and Toxtree. Potential risk of phototoxicity was also studied using chemical tests for detecting ROS under UV/VIS irradiation and in vitro tests on BALB/c 3T3 mouse fibroblasts (MTT, NRU and Live/Dead tests). TIM was shown to be potentially phototoxic because of its UV/VIS absorptive properties and generation ROS during irradiation. As was observed in the MTT and NRU tests, the co-treatment of fibroblasts with TIM and UV/VIS light inhibited cell viability, especially when concentrations of the drug were higher than 50 µg/mL.
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Affiliation(s)
- Karolina Lejwoda
- Department of Medicinal Chemistry, Medical University of Lublin, 20-090 Lublin, Poland;
| | - Anna Gumieniczek
- Department of Medicinal Chemistry, Medical University of Lublin, 20-090 Lublin, Poland;
| | - Agata Filip
- Department of Cancer Genetics, Cytogenetics Laboratory, Medical University of Lublin, 20-080 Lublin, Poland;
| | - Beata Naumczuk
- Institute of Organic Chemistry Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland;
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Saadi S, Makhlouf C, Nacer NE, Halima B, Faiza A, Kahina H, Wahiba F, Afaf K, Rabah K, Saoudi Z. Whey proteins as multifunctional food materials: Recent advancements in hydrolysis, separation, and peptidomimetic approaches. Compr Rev Food Sci Food Saf 2024; 23:e13288. [PMID: 38284584 DOI: 10.1111/1541-4337.13288] [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: 07/21/2023] [Revised: 10/23/2023] [Accepted: 12/11/2023] [Indexed: 01/30/2024]
Abstract
Whey protein derived bioactives, including α-lactalbumin, ß-lactoglobulin, bovine serum albumin, lactoferrin, transferrin, and proteose-peptones, have exhibited wide ranges of functional, biological and therapeutic properties varying from anticancer, antihypertensive, and antimicrobial effects. In addition, their functional properties involve gelling, emulsifying, and foaming abilities. For these reasons, this review article is framed to understand the relationship existed in between those compound levels and structures with their main functional, biological, and therapeutic properties exhibited either in vitro or in vivo. The impacts of hydrolysis mechanism and separation techniques in enhancing those properties are likewise discussed. Furthermore, special emphasize is given to multifunctional effects of whey derived bioactives and their future trends in ameliorating further food, pharmaceutical, and nutraceutical products. The underlying mechanism effects of those properties are still remained unclear in terms of activity levels, efficacy, and targeted effectiveness. For these reasons, some important models linking to functional properties, thermal properties and cell circumstances are established. Moreover, the coexistence of radical trapping groups, chelating groups, sulfhydryl groups, inhibitory groups, and peptide bonds seemed to be the key elements in triggering those functions and properties. Practical Application: Whey proteins are the byproducts of cheese processing and usually the exploitation of these food waste products has increasingly getting acceptance in many countries, especially European countries. Whey proteins share comparable nutritive values to milk products, particularly on their richness on important proteins that can serve immune protection, structural, and energetic roles. The nutritive profile of whey proteins shows diverse type of bioactive molecules like α-lactalbumin, ß-lactoglobulin, lactoferrin, transferrin, immunoglobulin, and proteose peptones with wide biological importance to the living system, such as in maintaining immunological, neuronal, and signaling roles. The diversification of proteins of whey products prompted scientists to exploit the real mechanisms behind of their biological and therapeutic effects, especially in declining the risk of cancer, tumor, and further complications like diabetes type 2 and hypertension risk effects. For these reasons, profiling these types of proteins using different proteomic and peptidomic approaches helps in determining their biological and therapeutic targets along with their release into gastrointestinal tract conditions and their bioavailabilities into portal circulation, tissue, and organs. The wide applicability of those protein fractions and their derivative bioactive products showed significant impacts in the field of emulsion and double emulsion stabilization by playing roles as emulsifying, surfactant, stabilizing, and foaming agents. Their amphoteric properties helped them to act as excellent encapsulating agents, particularly as vehicle for delivering important vitamins and bioactive compounds. The presence of ferric elements increased their transportation to several metal-ions in the same time increased their scavenging effects to metal-transition and peroxidation of lipids. Their richness with almost essential and nonessential amino acids makes them as selective microbial starters, in addition their richness in sulfhydryl amino acids allowed them to act a cross-linker in conjugating further biomolecules. For instance, conjugating gold-nanoparticles and fluorescent materials in targeting diseases like cancer and tumors in vivo is considered the cutting-edges strategies for these versatile molecules due to their active diffusion across-cell membrane and the presence of specific transporters to these therapeutic molecules.
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Affiliation(s)
- Sami Saadi
- Institut de la Nutrition, de l'Alimentation et des Technologies Agroalimentaires (INATAA), Université Frères Mentouri Constantine 1, Constantine, Algeria
- Laboratoire de Génie Agro-alimentaire, équipe Génie des Procédés Alimentaires, Biodiversité et Agro environnement, INATAA, Université Frères Mentouri Constantine 1 (UFC1), Constantine, Algeria
| | - Chaalal Makhlouf
- Institut de la Nutrition, de l'Alimentation et des Technologies Agroalimentaires (INATAA), Université Frères Mentouri Constantine 1, Constantine, Algeria
- Laboratory of Biotechnology and Food Quality, Institute of Nutrition, Food and Agro-Food Technologies, University of Constantine 1, Constantine, Algeria
- Laboratory of Applied Biochemistry, Faculty of Nature and Life Science, University of Bejaia, Bejaia, Algeria
| | - Nor Elhouda Nacer
- Department of Biology of Organisms, Faculty of Natural and Life Sciences, University of Batna 2, Batna, Algeria
| | - Boughellout Halima
- Institut de la Nutrition, de l'Alimentation et des Technologies Agroalimentaires (INATAA), Université Frères Mentouri Constantine 1, Constantine, Algeria
- Laboratoire de Génie Agro-alimentaire, équipe Génie des Procédés Alimentaires, Biodiversité et Agro environnement, INATAA, Université Frères Mentouri Constantine 1 (UFC1), Constantine, Algeria
| | - Adoui Faiza
- Institut de la Nutrition, de l'Alimentation et des Technologies Agroalimentaires (INATAA), Université Frères Mentouri Constantine 1, Constantine, Algeria
- Laboratoire de Génie Agro-alimentaire, équipe Génie des Procédés Alimentaires, Biodiversité et Agro environnement, INATAA, Université Frères Mentouri Constantine 1 (UFC1), Constantine, Algeria
| | - Hafid Kahina
- Institut de la Nutrition, de l'Alimentation et des Technologies Agroalimentaires (INATAA), Université Frères Mentouri Constantine 1, Constantine, Algeria
- Equipe MaQuaV, Laboratoire Bioqual INATAA, Université des Frères Mentouri-Constantine 1, Constantine, Algeria
| | - Falek Wahiba
- Institut de la Nutrition, de l'Alimentation et des Technologies Agroalimentaires (INATAA), Université Frères Mentouri Constantine 1, Constantine, Algeria
- Laboratoire de Génie Agro-alimentaire, équipe Génie des Procédés Alimentaires, Biodiversité et Agro environnement, INATAA, Université Frères Mentouri Constantine 1 (UFC1), Constantine, Algeria
| | - Kheroufi Afaf
- Institut de la Nutrition, de l'Alimentation et des Technologies Agroalimentaires (INATAA), Université Frères Mentouri Constantine 1, Constantine, Algeria
- Laboratoire de Génie Agro-alimentaire, équipe Génie des Procédés Alimentaires, Biodiversité et Agro environnement, INATAA, Université Frères Mentouri Constantine 1 (UFC1), Constantine, Algeria
| | - Kezih Rabah
- Institut de la Nutrition, de l'Alimentation et des Technologies Agroalimentaires (INATAA), Université Frères Mentouri Constantine 1, Constantine, Algeria
- Laboratory of Biotechnology and Food Quality, Institute of Nutrition, Food and Agro-Food Technologies, University of Constantine 1, Constantine, Algeria
| | - Zineddine Saoudi
- Institut de la Nutrition, de l'Alimentation et des Technologies Agroalimentaires (INATAA), Université Frères Mentouri Constantine 1, Constantine, Algeria
- Laboratoire de Génie Agro-alimentaire, équipe Génie des Procédés Alimentaires, Biodiversité et Agro environnement, INATAA, Université Frères Mentouri Constantine 1 (UFC1), Constantine, Algeria
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Wyżga B, Skóra M, Hąc-Wydro K. The influence of Leucidal - eco-preservative from radish - on model lipid membranes and selected pathogenic bacteria. Chem Phys Lipids 2023; 256:105338. [PMID: 37716416 DOI: 10.1016/j.chemphyslip.2023.105338] [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: 04/20/2023] [Revised: 08/23/2023] [Accepted: 09/11/2023] [Indexed: 09/18/2023]
Abstract
In this work the effect of Leucidal - a natural preservative from radish dedicated to be used in cosmetics - on bacteria cells and model bacteria membranes was investigated. To get insight into the mechanism of action of this formulation the lipid Langmuir monolayers imitating Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) membranes were prepared. Then, the influence of Leucidal on model systems was investigated by means of the surface pressure/area measurements, penetration studies and Brewster Angle Microscopy (BAM) visualization. Similar experiments were done also for one component monolayers formed from the model membrane lipids. The in vitro tests were done on five different bacteria species (E. coli, Enterococcus faecalis, S. aureus, Salmonella enterica, Pseudomonas aeruginosa). Leucidal was found to decrease packing of the monolayers, however, it was excluded from the films at higher concentrations. Model membrane experiments evidenced also a stronger affinity of the components of this eco-preservative to E. coli vs S. aureus membrane. Among one component films, those formed from phosphatidylglycerols and cardiolipins were more sensitive to the presence of Leucidal. However, in vitro tests evidenced that Leucidal exerts stronger inhibitory effect against S. aureus bacteria as compared to E. coli strain. These findings were discussed from the point of view of the role of Leucidal components and the lipid membrane properties in the membrane - based mechanism of action of this preservative. The results allow one to suggest that the membrane may not be the main site of action of Leucidal on bacteria. Moreover, since high concentration of the tested preparation exerted antibacterial activity in relation to all tested bacteria, a low selectivity of Leucidal can be postulated, which may be problematic from the point of view of its effect on the skin microbiome.
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Affiliation(s)
- Beata Wyżga
- Jagiellonian University, Faculty of Chemistry, Gronostajowa 2, 30-387 Kraków, Poland; Jagiellonian University, Doctoral School of Exact and Natural Sciences, Łojasiewicza 11, 30-348 Kraków, Poland
| | - Magdalena Skóra
- Jagiellonian University Medical College, Chair of Microbiology, Department of Infections Control and Mycology, Czysta 18, 31-121 Kraków, Poland
| | - Katarzyna Hąc-Wydro
- Jagiellonian University, Faculty of Chemistry, Gronostajowa 2, 30-387 Kraków, Poland.
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Rata DM, Cadinoiu AN, Daraba OM, Gradinaru LM, Atanase LI, Ichim DL. Influence of ZnO Nanoparticles on the Properties of Ibuprofen-Loaded Alginate-Based Biocomposite Hydrogels with Potential Antimicrobial and Anti-Inflammatory Effects. Pharmaceutics 2023; 15:2240. [PMID: 37765209 PMCID: PMC10534553 DOI: 10.3390/pharmaceutics15092240] [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: 06/30/2023] [Revised: 08/18/2023] [Accepted: 08/22/2023] [Indexed: 09/29/2023] Open
Abstract
Hydrogels are a favorable alternative to accelerate the burn wound healing process and skin regeneration owing to their capability of absorbing contaminated exudates. The bacterial infections that occur in burn wounds might be treated using different topically applied materials, but bacterial resistance to antibiotics has become a major problem worldwide. Therefore, the use of non-antibiotic treatments represents a major interest in current research. In this study, new antibiocomposite hydrogels with anti-inflammatory and antimicrobial properties based on hyaluronic acid (HA) and sodium alginate (AG) were obtained using 4-(4,6-dimethoxy-1,3,5-triazinyl-2)-4-methylmorpholinium chloride as an activator. The combination of Ibuprofen, a non-steroidal anti-inflammatory drug commonly used to reduce inflammation, fever and pain in the body, with zinc oxide nanoparticles (ZnO NPs) was used in this study aimed at creating a complex hydrogel with anti-inflammatory and antimicrobial action and capable of improving the healing process of wounds caused by burns. FTIR spectra confirmed the cross-linking of AG with HA as well as the successful incorporation of ZnO NPs. Using electronic microscopy, it was noticed that the morphology of hydrogels is influenced by the incorporation of ZnO nanoparticles. Moreover, the incorporation of ZnO nanoparticles into hydrogels also has an influence on the swelling behavior at both pH 7.4 and 5.4. In fact, the swelling rate is lower when the amounts of the activator, HA and ZnO NPs are high. A drug release rate of almost 100% was observed for hydrogels without ZnO NPs, whereas the addition of nanoparticles to hydrogels led to a decrease in the release rate to 68% during 24 h. Cellular viability tests demonstrated the non-cytotoxic behavior of the hydrogels without the ZnO NPs, whereas a weak to moderate cytotoxic effect was noticed for hydrogels with ZnO NPs. The hydrogels containing 4% and 5% ZnO NPs, respectively, showed good antimicrobial activity against the S. aureus strain. These preliminary data prove that these types of hydrogels can be of interest as biomaterials for the treatment of burn wounds.
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Affiliation(s)
- Delia Mihaela Rata
- Faculty of Medical Dentistry, “Apollonia” University of Iasi, Pacurari Street, No. 11, 700511 Iasi, Romania; (D.M.R.); (L.I.A.); (D.L.I.)
| | - Anca Niculina Cadinoiu
- Faculty of Medical Dentistry, “Apollonia” University of Iasi, Pacurari Street, No. 11, 700511 Iasi, Romania; (D.M.R.); (L.I.A.); (D.L.I.)
| | - Oana Maria Daraba
- Faculty of Medical Dentistry, “Apollonia” University of Iasi, Pacurari Street, No. 11, 700511 Iasi, Romania; (D.M.R.); (L.I.A.); (D.L.I.)
| | - Luiza Madalina Gradinaru
- “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania;
| | - Leonard Ionut Atanase
- Faculty of Medical Dentistry, “Apollonia” University of Iasi, Pacurari Street, No. 11, 700511 Iasi, Romania; (D.M.R.); (L.I.A.); (D.L.I.)
- Academy of Romanian Scientists, 050045 Bucharest, Romania
| | - Daniela Luminita Ichim
- Faculty of Medical Dentistry, “Apollonia” University of Iasi, Pacurari Street, No. 11, 700511 Iasi, Romania; (D.M.R.); (L.I.A.); (D.L.I.)
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Pessoa VC, Branco-Ferreira M, Jónsdóttir S, Marti E, Tilley P. Comparison of Skin Prick Tests (SPT), Intradermal Tests (IDT) and In Vitro Tests in the Characterization of Insect Bite Hypersensitivity (IBH) in a Population of Lusitano Horses: Contribution for Future Implementation of SPT in IBH Diagnosis. Animals (Basel) 2023; 13:2733. [PMID: 37684997 PMCID: PMC10486572 DOI: 10.3390/ani13172733] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/23/2023] [Accepted: 08/23/2023] [Indexed: 09/10/2023] Open
Abstract
Thirty controls (C) and 30 IBH-affected (T) Lusitano horses were evaluated. T horses were included based on anamnesis and physical examination, supported by questionnaires. All horses were submitted to skin tests, Intrademal (IDT) and Skin Prick Tests (SPT), on the neck with 14 specific allergens, 13 recombinant proteins (r-proteins) from Culicoides nubeculosus (Cul n) and Culicoides obsoletus (Cul o) salivary glands and Culicoides nubeculosus Whole Body Extract (Cul n WBE). Addicionally, a cluster of six T and six C horses were also tested with Cul n 3 and Cul n 4 produced in insect cells and barley, as well as E. coli produced Cul o 3 and Cul o WBE. Allergen concentrations were 10 µg/mL for IDT and 100 µg/mL for SPT, and wheal diameters assessed at 20 min, 6 and 48 h. IDTs were considered positive when wheal diameter was ≥50% of the histamine wheal and SPT's ≥ 0.9 cm. In vitro tests, allergen-specific serum IgE and sulfidoleukotriene (sLT) release assay were also carried out. Results showed that Cul n WBE, Cul n 7, 8, 9, Cul o1P and Cul o 2P were the best performing allergens for SPTs (p ≤ 0.0001) for the 1st allergen panel and Cul o WBE, Cul n 3 Bar and Cul n 4 Bac (p ≤ 0.05) for the 2nd, presenting a higher discriminatory diagnostic potential than IDTs, at a concentration of 100 µg/mL, with readings assessed at 20 min. Regarding in vitro tests overall, the sLT release assay performed best.
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Affiliation(s)
- Vera Carvalho Pessoa
- CIISA—Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, 1300-477 Lisbon, Portugal;
- AL4Animals—Associate Laboratory for Animal and Veterinary Sciences, Faculty of Veterinary Medicine, University of Lisbon, 1300-477 Lisbon, Portugal
| | - Manuel Branco-Ferreira
- Immunoallergology University Clinic, Faculty of Medicine, University of Lisbon, 1300-477 Lisbon, Portugal;
| | - Sigridur Jónsdóttir
- Institute for Experimental Pathology, Biomedical Center, University of Iceland, Keldur, 102 Reykjavik, Iceland;
| | - Eliane Marti
- Department of Clinical Research and Veterinary Public Health, Vetsuisse Faculty, University of Bern, 3012 Bern, Switzerland;
| | - Paula Tilley
- CIISA—Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, 1300-477 Lisbon, Portugal;
- AL4Animals—Associate Laboratory for Animal and Veterinary Sciences, Faculty of Veterinary Medicine, University of Lisbon, 1300-477 Lisbon, Portugal
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Rodríguez-Pérez R, de las Vecillas L, Cabañas R, Bellón T. Tools for Etiologic Diagnosis of Drug-Induced Allergic Conditions. Int J Mol Sci 2023; 24:12577. [PMID: 37628756 PMCID: PMC10454098 DOI: 10.3390/ijms241612577] [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: 06/06/2023] [Revised: 08/03/2023] [Accepted: 08/06/2023] [Indexed: 08/27/2023] Open
Abstract
Drug hypersensitivity reactions are a serious concern in clinical practice because they can be severe and result in lifelong sequelae. An accurate diagnosis and identification of the culprit drug is essential to prevent future reactions as well as for the identification of safe treatment alternatives. Nonetheless, the diagnosis can be challenging. In vivo and in vitro tests can be helpful, although none are conclusive; therefore, the tests are not usually performed in isolation but as part of a diagnostic algorithm. In addition, some in vitro tests are only available in research laboratories, and standardization has not been fully accomplished. Collaborating research is needed to improve drug hypersensitivity reaction diagnosis. In this review, we update the current available in vivo and in vitro tools with their pros and cons and propose an algorithm to integrate them into clinical practice.
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Affiliation(s)
- Rosa Rodríguez-Pérez
- Institute for Health Research Hospital Universitario La Paz (IdiPAZ), Paseo Castellana 261, 28046 Madrid, Spain; (L.d.l.V.); (R.C.); (T.B.)
| | - Leticia de las Vecillas
- Institute for Health Research Hospital Universitario La Paz (IdiPAZ), Paseo Castellana 261, 28046 Madrid, Spain; (L.d.l.V.); (R.C.); (T.B.)
- Allergy Department, La Paz University Hospital, Paseo Castellana 261, 28046 Madrid, Spain
- PIELenRed Consortium, 28046 Madrid, Spain
| | - Rosario Cabañas
- Institute for Health Research Hospital Universitario La Paz (IdiPAZ), Paseo Castellana 261, 28046 Madrid, Spain; (L.d.l.V.); (R.C.); (T.B.)
- Allergy Department, La Paz University Hospital, Paseo Castellana 261, 28046 Madrid, Spain
- PIELenRed Consortium, 28046 Madrid, Spain
- Center for Biomedical Research Network on Rare Diseases (CIBERER U754), 28046 Madrid, Spain
| | - Teresa Bellón
- Institute for Health Research Hospital Universitario La Paz (IdiPAZ), Paseo Castellana 261, 28046 Madrid, Spain; (L.d.l.V.); (R.C.); (T.B.)
- PIELenRed Consortium, 28046 Madrid, Spain
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Saretta F, Tomei L, Mori F, Mayorga C. In vitro diagnostic testing for drug allergy in children. Pediatr Allergy Immunol 2023; 34:e13955. [PMID: 37102390 DOI: 10.1111/pai.13955] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/04/2023] [Accepted: 04/14/2023] [Indexed: 04/28/2023]
Abstract
Diagnosing Drug Hypersensitivity Reactions (DHRs) could be a complicated process especially in children, since allergic-like manifestation at this age is more often the expression of concomitant infections rather than a actual DHRs. In vivo tests are usually suggested as a first step; however, prick and intradermal tests could be painful and have shown different sensitivity and specificity among published studies. In some cases, in vivo tests such as Drug Provocation test (DPT) could be even contraindicated. Therefore, the need for in vitro testing is compelling, to add useful information along the diagnostic pathway and to limit the need of DPT. In this review, we analyze the different types of in vitro tests, focusing on those used more widely such as specific IgE and on those that are still for research settings, such as basophil activation test and lymphocyte transformation test, but that have shown some useful diagnostic potential.
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Affiliation(s)
- Francesca Saretta
- Pediatric Department, Azienda Sanitaria Universitaria Friuli Centrale, Udine, Italy
| | - Leonardo Tomei
- Allergy Unit, Meyer Children's Hospital IRCCS, Florence, Italy
- Department of Health Sciences, University of Florence, Florence, Italy
| | - Francesca Mori
- Allergy Unit, Meyer Children's Hospital IRCCS, Florence, Italy
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Parfenova LV, Galimshina ZR, Gil’fanova GU, Alibaeva EI, Danilko KV, Aubakirova VR, Farrakhov RG, Parfenov EV, Valiev RZ. Modeling of Biological Activity of PEO-Coated Titanium Implants with Conjugates of Cyclic RGD Peptide with Amino Acid Bisphosphonates. Materials (Basel) 2022; 15:8120. [PMID: 36431607 PMCID: PMC9699121 DOI: 10.3390/ma15228120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/07/2022] [Accepted: 11/12/2022] [Indexed: 06/16/2023]
Abstract
Titanium is considered to be the most essential metal in the field of implantology. The main factors determining metal biocompatibility, among others, include the morphology and chemical composition of the titanium surface. Therefore, the aim of this work was to develop approaches to control the biological activity of the titanium surface by creating coatings that combine both an inorganic phase with a given morphology and organic molecules containing an integrin-selective peptide that regulate cell adhesion and proliferation. As such, we synthesized new c(RGDfC) derivatives of amino acid bisphosphonates (four examples) with different bisphosphonate anchors and maleimide linkers. These molecules were deposited on a highly developed porous surface obtained via the plasma electrolytic oxidation (PEO) of coarse-grained and nanostructured titanium. In vitro studies demonstrated the increase in the viability degree of mesenchymal stem cells and fibroblasts on the surface of coarse-grained or nanostructured titanium modified with PEO and a c(RGDfC) derivative of ε-aminocaproic acid bisphophonate with an SMCC linker. As a result, the use of conjugates of amino acid bisphosphonates with a cyclic RGD peptide for the modification of PEO-coated titanium opens the ways for the effective control of the biological activity of the metal implant surface.
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Affiliation(s)
- Lyudmila V. Parfenova
- Institute of Petrochemistry and Catalysis, Ufa Federal Research Center, Russian Academy of Sciences, 141, Prospekt Oktyabrya, 450075 Ufa, Russia
| | - Zulfiya R. Galimshina
- Institute of Petrochemistry and Catalysis, Ufa Federal Research Center, Russian Academy of Sciences, 141, Prospekt Oktyabrya, 450075 Ufa, Russia
| | - Guzel U. Gil’fanova
- Institute of Petrochemistry and Catalysis, Ufa Federal Research Center, Russian Academy of Sciences, 141, Prospekt Oktyabrya, 450075 Ufa, Russia
| | - Eliza I. Alibaeva
- Institute of Petrochemistry and Catalysis, Ufa Federal Research Center, Russian Academy of Sciences, 141, Prospekt Oktyabrya, 450075 Ufa, Russia
| | - Ksenia V. Danilko
- Central Research Laboratory, Bashkir State Medical University, 3 Lenin Street, 450000 Ufa, Russia
| | - Veta R. Aubakirova
- Department of Electronic Engineering, Ufa State Aviation Technical University, 12 Karl Marx Street, 450008 Ufa, Russia
| | - Ruzil G. Farrakhov
- Department of Electronic Engineering, Ufa State Aviation Technical University, 12 Karl Marx Street, 450008 Ufa, Russia
| | - Evgeny V. Parfenov
- Department of Materials Science and Physics of Metals, Ufa State Aviation Technical University, 12 Karl Marx Street, 450008 Ufa, Russia
| | - Ruslan Z. Valiev
- Department of Materials Science and Physics of Metals, Ufa State Aviation Technical University, 12 Karl Marx Street, 450008 Ufa, Russia
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Kęska A, Janicka A, Zawiślak M, Molska J, Włostowski R, Włóka A, Świeściak J, Ostrowski K. Assessment of the Actual Toxicity of Engine Exhaust Gas Emissions from Euro 3 and Euro 6 Compliant Vehicles with the BAT-CELL Method Using In Vitro Tests. Int J Environ Res Public Health 2022; 19:14138. [PMID: 36361013 PMCID: PMC9654593 DOI: 10.3390/ijerph192114138] [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] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/21/2022] [Accepted: 10/26/2022] [Indexed: 06/16/2023]
Abstract
Legal restrictions on vehicle engine exhaust gas emission control do not always go hand in hand with an actual reduction in the emissions of toxins into the atmosphere. Moreover, the methods currently used to measure exhaust gas emissions do not give unambiguous results on the impact of the tested gases on living organisms. The method used to assess the actual toxicity of gases, BAT-CELL Bio-Ambient-Tests using in vitro tests, takes into account synergistic interactions of individual components of a mixture of gases without the need to know its qualitative and quantitative composition and allows for determination of the actual toxicity of the gas composition. Using the BAT-CELL method, exhaust gases from passenger vehicles equipped with spark-ignition engines complying with the Euro 3 and Euro 6 emission standards were tested. The results of toxicological tests were correlated with the results of chromatographic analysis. It was shown that diverse qualitative composition of the mixture of hydrocarbons determining the exhaust gases toxicity may decrease the percentage value of cell survival. Additionally, it was proven that the average survival of cells after exposure to exhaust gases from tested vehicles meeting the more restrictive Euro 6 standard was lower than for vehicles meeting the Euro 3 standard thus indicating the higher toxicity of exhaust gases from newer vehicles.
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Lu B, Yao X, Han G, Luo Z, Zhang J, Yong K, Wang Y, Luo Y, Yang Z, Ren M, Cao S. Isolation of Klebsiella pneumoniae Phage vB_KpnS_MK54 and Pathological Assessment of Endolysin in the Treatment of Pneumonia Mice Model. Front Microbiol 2022; 13:854908. [PMID: 35387089 PMCID: PMC8978833 DOI: 10.3389/fmicb.2022.854908] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 03/01/2022] [Indexed: 11/19/2022] Open
Abstract
With the improper use of antibiotics, an increasing number of multidrug-resistant bacteria have been reported worldwide, posing challenges for disease treatment. Klebsiella pneumoniae is an important zoonotic pathogen that colonises the respiratory tract. Endolysin therapy has emerged with the development of phages. In this study, a lytic phage vB_KpnS_MK54 was isolated from the drinking water of a forest musk deer (FMD) farm in Sichuan Province. It was the first reported phage obtained from FMD. The primary biological characteristics were determined, and whole-genome sequencing analysis was performed. The phage which belongs to the family Siphoviridae is highly specific for lytic host bacteria and is moderately adaptable to different environments. Whole-genome sequencing results showed that the phage genome size was 46,218 bp. There were 80 coding DNA sequences (CDSs) in total, 32 of which had known functions. The last CDS is the phage endolysin LysG24. A new peptide-modified endolysin (LysCA) was constituted by connecting the cecropin A peptide residues with LysG24 to investigate the antibacterial activities of both LysG24 and LysCA. The results showed that the lytic profile of LysG24 and LysCA was wider than that of phage MK54. For in vitro tests, both endolysins destroyed 99% of the host bacteria within 6 h. The lysing ability and environmental adaptability of LysCA were significantly stronger than those of LysG24. For in vivo tests, LysG24 and LysCA exhibited therapeutic effects in a mouse model of pneumonia wherewith the mice were infected with K. pneumoniae (LPKP), wherein both LysG24 and LysCA can effectively reduce the pulmonary inflammatory response. The LPKP bacterial load in the treatment group was significantly lower than that in the bacterial group, among which LysCA displayed a more obvious therapeutic effect. Furthermore, the safety test showed that the endolysins had no toxic effects on mice. In general, both LysG24 and LysCA showed excellent antibacterial activity in vivo and in vitro, with high safety and strong adaptability to the environment, manifesting their latent potential as new antimicrobial agents.
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Affiliation(s)
- Biao Lu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, China
| | - Xueping Yao
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, China
| | - Guangli Han
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, China
| | - Zidan Luo
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, China
| | - Jieru Zhang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, China
| | - Kang Yong
- College of Animal Science and Technology, Chongqing Three Gorges Vocational College, Chongqing, China
| | - Yin Wang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, China
| | - Yan Luo
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, China
| | - Zexiao Yang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, China
| | - Meishen Ren
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, China
| | - Suizhong Cao
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, China
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11
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Cannillo V, Salvatori R, Bergamini S, Bellucci D, Bertoldi C. Bioactive Glasses in Periodontal Regeneration: Existing Strategies and Future Prospects-A Literature Review. Materials (Basel) 2022; 15:ma15062194. [PMID: 35329645 PMCID: PMC8954447 DOI: 10.3390/ma15062194] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 03/11/2022] [Accepted: 03/13/2022] [Indexed: 12/22/2022]
Abstract
The present review deals with bioactive glasses (BGs), a class of biomaterials renowned for their osteoinductive and osteoconductive capabilities, and thus widely used in tissue engineering, i.e., for the repair and replacement of damaged or missing bone. In particular, the paper deals with applications in periodontal regeneration, with a special focus on in vitro, in vivo and clinical studies. The study reviewed eligible publications, identified on the basis of inclusion/exclusion criteria, over a ranged time of fifteen years (from 1 January 2006 to 31 March 2021). While there are many papers dealing with in vitro tests, only a few have reported in vivo (in animal) research, or even clinical trials. Regardless, BGs seem to be an adequate choice as grafts in periodontal regeneration.
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Affiliation(s)
- Valeria Cannillo
- Department of Engineering “Enzo Ferrari”, University of Modena and Reggio Emilia, Via P. Vivarelli 10, 41125 Modena, Italy;
- Correspondence:
| | - Roberta Salvatori
- Department of Industrial Engineering and BIOtech Research Center, University of Trento, 38123 Trento, Italy;
| | - Stefania Bergamini
- Department of Surgery, Medicine, Dentistry and Morphological Sciences with Transplant Surgery, Oncology and Regenerative Medicine Relevance (CHIMOMO), University of Modena and Reggio Emilia, 41124 Modena, Italy; (S.B.); (C.B.)
| | - Devis Bellucci
- Department of Engineering “Enzo Ferrari”, University of Modena and Reggio Emilia, Via P. Vivarelli 10, 41125 Modena, Italy;
| | - Carlo Bertoldi
- Department of Surgery, Medicine, Dentistry and Morphological Sciences with Transplant Surgery, Oncology and Regenerative Medicine Relevance (CHIMOMO), University of Modena and Reggio Emilia, 41124 Modena, Italy; (S.B.); (C.B.)
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12
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Demchenko S, Lesyk R, Yadlovskyi O, Zuegg J, Elliott AG, Drapak I, Fedchenkova Y, Suvorova Z, Demchenko A. Synthesis, Antibacterial and Antifungal Activity of New 3-Aryl-5 H-pyrrolo[1,2- a]imidazole and 5 H-Imidazo[1,2- a]azepine Quaternary Salts. Molecules 2021; 26:4253. [PMID: 34299528 DOI: 10.3390/molecules26144253] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 07/07/2021] [Accepted: 07/12/2021] [Indexed: 11/17/2022] Open
Abstract
A series of novel 3-aryl-5H-pyrrolo[1,2-a]imidazole and 5H-imidazo[1,2-a]azepine quaternary salts were synthesized in 58-85% yields via the reaction of 3-aryl-6, 7-dihydro-5H-pyrrolo[1,2-a]imidazoles or 3-aryl-6,7,8,9-tetrahydro-5H-imidazo[1,2-a]azepines and various alkylating reagents. All compounds were characterized by 1H NMR, 13C NMR, and LC-MS. The conducted screening studies of the in vitro antimicrobial activity of the new quaternary salts derivatives established that 15 of the 18 newly synthesized compounds show antibacterial and antifungal activity. Synthesized 3-(3,4-dichlorohenyl)-1-[(4-phenoxyphenylcarbamoyl)-methyl]-6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-1-ium chloride 6c possessed a broad activity spectrum towards Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, Acinetobacter baumannii, and Cryptococcus neoformans, with a high hemolytic activity against human red blood cells and cytotoxicity against HEK-293. However, compound 6c is characterized by a low in vivo toxicity in mice (LD50 > 2000 mg/kg).
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13
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Fernandez‐Santamaria R, Bogas G, Palomares F, Salas M, Fernandez TD, Jimenez I, Barrionuevo E, Doña I, Torres MJ, Mayorga C. Dendritic cells inclusion and cell-subset assessment improve flow-cytometry-based proliferation test in non-immediate drug hypersensitivity reactions. Allergy 2021; 76:2123-2134. [PMID: 33523478 DOI: 10.1111/all.14755] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 12/09/2020] [Accepted: 01/04/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND Lymphocyte transformation test (LTT) has been widely used to evaluate non-immediate drug hypersensitivity reactions (NIDHRs). However, the lack of standardization and the low sensitivity have limited its routine diagnostic use. The drug presentation by dendritic cells (DCs) and the assessment of proliferation on effector cells have shown promising results. Flow-cytometry-based methods can help apply these improvements. We aimed to assess the added value of using drug-primed-DCs and the determination of the proliferative response of different lymphocyte subpopulations in NIDHRs. METHODS Patients with confirmed NIDHR were evaluated by both conventional (C-LTT) and with drug-primed-DCs LTT (dDC-LTT)analysing the proliferative response in T cells and other effector cell subpopulations by using the fluorescent molecule, carboxyfluorescein diacetate succinimidyl ester (CFSE). RESULTS The C-LTT showed a significantly lower sensitivity (29.4%) compared with dDC-LTT (61.8%), which was confirmed analysing each particular clinical entity: SJS-TEN (62.5% vs 87.5%), MPE (15% vs 47.4%) and AGEP (33% vs 80%). When including the effector cell subpopulations involved in each clinical entity, CD3+ +CD4+ Th 1 or CD3+ +NK cells in SJS-TEN, CD3+ +CD4+ Th 1+NK cells in MPE and CD3+ +NK cells in AGEP, we could significantly increase the sensitivity of the in vitro test to 100%, 68.4% and 100%, respectively, with an overall sensitivity of 87% and 85% of specificity in NIDHR. CONCLUSIONS The use of a flow-cytometry-based test, DCs as drug presenting cells, and focusing on effector cell subpopulations for each clinical entity significantly improved the drug-specific proliferative response in NIDHRs with a unique cellular in vitro test.
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Affiliation(s)
| | - Gador Bogas
- Allergy Unit Hospital Regional Universitario de Málaga‐HRUM Málaga Spain
| | - Francisca Palomares
- Allergy Research Group Instituto de Investigación Biomédica de Málaga‐IBIMA Málaga Spain
| | - Maria Salas
- Allergy Unit Hospital Regional Universitario de Málaga‐HRUM Málaga Spain
| | - Tahia D. Fernandez
- Allergy Research Group Instituto de Investigación Biomédica de Málaga‐IBIMA Málaga Spain
- Allergy Unit Hospital Regional Universitario de Málaga‐HRUM Málaga Spain
| | - Isabel Jimenez
- Allergy Research Group Instituto de Investigación Biomédica de Málaga‐IBIMA Málaga Spain
| | | | - Inmaculada Doña
- Allergy Unit Hospital Regional Universitario de Málaga‐HRUM Málaga Spain
| | - Maria Jose Torres
- Allergy Research Group Instituto de Investigación Biomédica de Málaga‐IBIMA Málaga Spain
- Medicine Department Universidad de Málaga‐UMA Málaga Spain
- Allergy Unit Hospital Regional Universitario de Málaga‐HRUM Málaga Spain
- Nanostructures for Diagnosing and Treatment of Allergic Diseases Laboratory Centro Andaluz de Nanomedicina y Biotecnología‐BIONAND Málaga Spain
| | - Cristobalina Mayorga
- Allergy Research Group Instituto de Investigación Biomédica de Málaga‐IBIMA Málaga Spain
- Allergy Unit Hospital Regional Universitario de Málaga‐HRUM Málaga Spain
- Nanostructures for Diagnosing and Treatment of Allergic Diseases Laboratory Centro Andaluz de Nanomedicina y Biotecnología‐BIONAND Málaga Spain
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Eilenberger C, Rothbauer M, Selinger F, Gerhartl A, Jordan C, Harasek M, Schädl B, Grillari J, Weghuber J, Neuhaus W, Küpcü S, Ertl P. A Microfluidic Multisize Spheroid Array for Multiparametric Screening of Anticancer Drugs and Blood-Brain Barrier Transport Properties. Adv Sci (Weinh) 2021; 8:e2004856. [PMID: 34105271 PMCID: PMC8188192 DOI: 10.1002/advs.202004856] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [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: 12/16/2020] [Revised: 01/30/2021] [Indexed: 05/08/2023]
Abstract
Physiological-relevant in vitro tissue models with their promise of better predictability have the potential to improve drug screening outcomes in preclinical studies. Despite the advances of spheroid models in pharmaceutical screening applications, variations in spheroid size and consequential altered cell responses often lead to nonreproducible and unpredictable results. Here, a microfluidic multisize spheroid array is established and characterized using liver, lung, colon, and skin cells as well as a triple-culture model of the blood-brain barrier (BBB) to assess the effects of spheroid size on (a) anticancer drug toxicity and (b) compound penetration across an advanced BBB model. The reproducible on-chip generation of 360 spheroids of five dimensions on a well-plate format using an integrated microlens technology is demonstrated. While spheroid size-related IC50 values vary up to 160% using the anticancer drugs cisplatin (CIS) or doxorubicin (DOX), reduced CIS:DOX drug dose combinations eliminate all lung microtumors independent of their sizes. A further application includes optimizing cell seeding ratios and size-dependent compound uptake studies in a perfused BBB model. Generally, smaller BBB-spheroids reveal an 80% higher compound penetration than larger spheroids while verifying the BBB opening effect of mannitol and a spheroid size-related modulation on paracellular transport properties.
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Affiliation(s)
- Christoph Eilenberger
- Faculty of Technical ChemistryVienna University of TechnologyGetreidemarkt 9Vienna1060Austria
| | - Mario Rothbauer
- Faculty of Technical ChemistryVienna University of TechnologyGetreidemarkt 9Vienna1060Austria
- Karl Chiari Lab for Orthopaedic BiologyDepartment of Orthopedics and Trauma SurgeryMedical University of ViennaWähringer Gürtel 18‐20Vienna1090Austria
| | - Florian Selinger
- Faculty of Technical ChemistryVienna University of TechnologyGetreidemarkt 9Vienna1060Austria
| | - Anna Gerhartl
- AIT Austrian Institute of Technology GmbHCenter Health and BioresourcesCompetence Unit Molecular DiagnosticsGiefinggasse 4Vienna1210Austria
| | - Christian Jordan
- Faculty of Technical ChemistryVienna University of TechnologyGetreidemarkt 9Vienna1060Austria
| | - Michael Harasek
- Faculty of Technical ChemistryVienna University of TechnologyGetreidemarkt 9Vienna1060Austria
| | - Barbara Schädl
- Ludwig‐Boltzmann‐Institute for Experimental and Clinical TraumatologyDonaueschingenstraße 13Vienna1200Austria
| | - Johannes Grillari
- Ludwig‐Boltzmann‐Institute for Experimental and Clinical TraumatologyDonaueschingenstraße 13Vienna1200Austria
- Institute for Molecular BiotechnologyDepartment of BiotechnologyUniversity of Natural Resources and Life SciencesMuthgasse 18Vienna1190Austria
| | - Julian Weghuber
- School of EngineeringUniversity of Applied Sciences Upper AustriaStelzhamerstraße 23Wels4600Austria
- FFoQSI GmbH‐Austrian Competence Centre for Feed and Food QualitySafety and InnovationTechnopark 1CTulln3430Austria
| | - Winfried Neuhaus
- AIT Austrian Institute of Technology GmbHCenter Health and BioresourcesCompetence Unit Molecular DiagnosticsGiefinggasse 4Vienna1210Austria
| | - Seta Küpcü
- Institute of Synthetic BioarchitecturesDepartment of NanobiotechnologyUniversity of Natural Resources and Life SciencesVienna, Muthgasse 11Vienna1190Austria
| | - Peter Ertl
- Faculty of Technical ChemistryVienna University of TechnologyGetreidemarkt 9Vienna1060Austria
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15
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Antoszczak M, Markowska A, Markowska J, Huczyński A. Antidepressants and Antipsychotic Agents as Repurposable Oncological Drug Candidates. Curr Med Chem 2021; 28:2137-2174. [PMID: 32895037 DOI: 10.2174/0929867327666200907141452] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/26/2020] [Accepted: 06/10/2020] [Indexed: 11/22/2022]
Abstract
Drug repurposing, also known as drug repositioning/reprofiling, is a relatively new strategy for the identification of alternative uses of well-known therapeutics that are outside the scope of their original medical indications. Such an approach might entail a number of advantages compared to standard de novo drug development, including less time needed to introduce the drug to the market, and lower costs. The group of compounds that could be considered as promising candidates for repurposing in oncology include the central nervous system drugs, especially selected antidepressant and antipsychotic agents. In this article, we provide an overview of some antidepressants (citalopram, fluoxetine, paroxetine, sertraline) and antipsychotics (chlorpromazine, pimozide, thioridazine, trifluoperazine) that have the potential to be repurposed as novel chemotherapeutics in cancer treatment, as they have been found to exhibit preventive and/or therapeutic action in cancer patients. Nevertheless, although drug repurposing seems to be an attractive strategy to search for oncological drugs, we would like to clearly indicate that it should not replace the search for new lead structures, but only complement de novo drug development.
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Affiliation(s)
- Michał Antoszczak
- Department of Medical Chemistry, Faculty of Chemistry, Adam Mickiewicz University, Poznan, Poland
| | - Anna Markowska
- \Department of Perinatology and Women's Diseases, Poznań University of Medical Sciences, Poznan, Poland
| | - Janina Markowska
- Department of Oncology, Poznań University of Medical Sciences, Poznan, Poland
| | - Adam Huczyński
- Department of Medical Chemistry, Faculty of Chemistry, Adam Mickiewicz University, Poznan, Poland
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16
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Lukitsch B, Koller R, Ecker P, Elenkov M, Janeczek C, Pekovits M, Haddadi B, Jordan C, Gfoehler M, Harasek M. Water as a Blood Model for Determination of CO 2 Removal Performance of Membrane Oxygenators. Membranes (Basel) 2021; 11:membranes11050356. [PMID: 34066152 PMCID: PMC8151077 DOI: 10.3390/membranes11050356] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/06/2021] [Accepted: 05/07/2021] [Indexed: 11/23/2022]
Abstract
CO2 removal via membrane oxygenators has become an important and reliable clinical technique. Nevertheless, oxygenators must be further optimized to increase CO2 removal performance and to reduce severe side effects. Here, in vitro tests with water can significantly reduce costs and effort during development. However, they must be able to reasonably represent the CO2 removal performance observed with blood. In this study, the deviation between the CO2 removal rate determined in vivo with porcine blood from that determined in vitro with water is quantified. The magnitude of this deviation (approx. 10%) is consistent with results reported in the literature. To better understand the remaining difference in CO2 removal rate and in order to assess the application limits of in vitro water tests, CFD simulations were conducted. They allow to quantify and investigate the influences of the differing fluid properties of blood and water on the CO2 removal rate. The CFD results indicate that the main CO2 transport resistance, the diffusional boundary layer, behaves generally differently in blood and water. Hence, studies of the CO2 boundary layer should be preferably conducted with blood. In contrast, water tests can be considered suitable for reliable determination of the total CO2 removal performance of oxygenators.
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Affiliation(s)
- Benjamin Lukitsch
- Institute of Chemical, Environmental and Bioscience Engineering, TU Wien, 1060 Vienna, Austria; (R.K.); (P.E.); (M.P.); (B.H.); (C.J.); (M.H.)
- Correspondence:
| | - Raffael Koller
- Institute of Chemical, Environmental and Bioscience Engineering, TU Wien, 1060 Vienna, Austria; (R.K.); (P.E.); (M.P.); (B.H.); (C.J.); (M.H.)
| | - Paul Ecker
- Institute of Chemical, Environmental and Bioscience Engineering, TU Wien, 1060 Vienna, Austria; (R.K.); (P.E.); (M.P.); (B.H.); (C.J.); (M.H.)
- Institute of Engineering Design and Product Development, TU Wien, 1060 Vienna, Austria; (M.E.); (C.J.); (M.G.)
| | - Martin Elenkov
- Institute of Engineering Design and Product Development, TU Wien, 1060 Vienna, Austria; (M.E.); (C.J.); (M.G.)
| | - Christoph Janeczek
- Institute of Engineering Design and Product Development, TU Wien, 1060 Vienna, Austria; (M.E.); (C.J.); (M.G.)
| | - Markus Pekovits
- Institute of Chemical, Environmental and Bioscience Engineering, TU Wien, 1060 Vienna, Austria; (R.K.); (P.E.); (M.P.); (B.H.); (C.J.); (M.H.)
- Institute of Engineering Design and Product Development, TU Wien, 1060 Vienna, Austria; (M.E.); (C.J.); (M.G.)
| | - Bahram Haddadi
- Institute of Chemical, Environmental and Bioscience Engineering, TU Wien, 1060 Vienna, Austria; (R.K.); (P.E.); (M.P.); (B.H.); (C.J.); (M.H.)
| | - Christian Jordan
- Institute of Chemical, Environmental and Bioscience Engineering, TU Wien, 1060 Vienna, Austria; (R.K.); (P.E.); (M.P.); (B.H.); (C.J.); (M.H.)
| | - Margit Gfoehler
- Institute of Engineering Design and Product Development, TU Wien, 1060 Vienna, Austria; (M.E.); (C.J.); (M.G.)
| | - Michael Harasek
- Institute of Chemical, Environmental and Bioscience Engineering, TU Wien, 1060 Vienna, Austria; (R.K.); (P.E.); (M.P.); (B.H.); (C.J.); (M.H.)
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Ruangwong OU, Pornsuriya C, Pitija K, Sunpapao A. Biocontrol Mechanisms of Trichoderma koningiopsis PSU3-2 against Postharvest Anthracnose of Chili Pepper. J Fungi (Basel) 2021; 7:jof7040276. [PMID: 33916921 PMCID: PMC8067587 DOI: 10.3390/jof7040276] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/05/2021] [Accepted: 04/06/2021] [Indexed: 02/07/2023] Open
Abstract
Several mechanisms are involved in the biological control of plant pathogens by the soil-borne Trichoderma spp. fungi. The aim of this study was to characterize a new strain of Trichoderma as a potential biological control agent to control the postharvest anthracnose of chili pepper caused by Colletotrichumgloeosporioides. A total of nine strains of Trichoderma spp. were screened for their antifungal activity using a dual culture assay against C.gloeosporioides. Trichoderma koningiopsis PSU3-2 was shown to be the most effective strain, with a percentage inhibition of 79.57%, which was significantly higher than that of other strains (p < 0.05). In the sealed plate method, T. koningiopsis PSU3-2 suppressed the growth of C.gloeosporioides by 38.33%. Solid-phase microextraction (SPME) was applied to trap volatiles emitted by T. koningiopsis PSU3-2, and the GC/MS profiling revealed the presence of antifungal compounds including azetidine, 2-phenylethanol, and ethyl hexadecanoate. The production of cell-wall-degrading enzymes (CWDEs) was assayed through cell-free culture filtrate (CF) of PSU3-2, and the enzyme activity of chitinase and β-1,3-glucanase was 0.06 and 0.23 U/mL, respectively, significantly higher than that in the control (p < 0.05). Scanning electron microscopy of the mycelium incubated in cell-free CF of T. koningiopsis PSU3-2 showed the abnormal shape of C.gloeosporioides hyphae. Application of T. koningiopsis PSU3-2 by the dipping method significantly reduced the lesion size (p < 0.05) after inoculation with C.gloeosporioides compared to the control, and there was no disease symptom development in T. koningiopsis PSU3-2-treated chili pepper. This study demonstrates that T. koningiopsis PSU3-2 is an effective antagonistic microorganism and a promising biocontrol agent against postharvest anthracnose of chili pepper, acting with multiple mechanisms.
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Affiliation(s)
- On-Uma Ruangwong
- Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Mueang, Chiang Mai 50200, Thailand;
- Innovative Agriculture Research Center, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Chaninun Pornsuriya
- Agricultural Innovation and Management Division (Pest Management), Faculty of Natural Resources, Prince of Songkla University, Hatyai, Songkhla 90110, Thailand;
| | - Kitsada Pitija
- Perkin Elmer Co. Ltd., 290 Soi 17, Rama 9 Rd., Bangkapi, Huay Kwang, Bangkok 10310, Thailand;
| | - Anurag Sunpapao
- Agricultural Innovation and Management Division (Pest Management), Faculty of Natural Resources, Prince of Songkla University, Hatyai, Songkhla 90110, Thailand;
- Correspondence: ; Tel.: +66-74-28-6103
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18
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Grasselli E, Dvorakova M, Graceli JB. Editorial: Presence and Daily Exposure to Endocrine Disruptors: How Can Human Life Change? Front Endocrinol (Lausanne) 2021; 12:790853. [PMID: 34899615 PMCID: PMC8654277 DOI: 10.3389/fendo.2021.790853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 11/02/2021] [Indexed: 11/13/2022] Open
Affiliation(s)
- Elena Grasselli
- Department of Earth, Environmental and Life Sciences (DISTAV), University of Genoa, Genoa, Italy
- *Correspondence: Elena Grasselli,
| | - Marketa Dvorakova
- National Reference Laboratory for Experimental Immunotoxicology, Centre of Toxicology and Health Safety, National Institute of Public Health (NIPH), Prague, Czechia
| | - Jones B. Graceli
- Department of Morphology, Federal University of Espírito Santo, Vitória, Brazil
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19
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Ariza A, Mayorga C, Bogas G, Barrionuevo E, Torres MJ, Doña I, Fernandez TD. Advances and novel developments in drug hypersensitivity diagnosis. Allergy 2020; 75:3112-3123. [PMID: 32990987 DOI: 10.1111/all.14603] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 05/08/2020] [Revised: 09/16/2020] [Accepted: 09/17/2020] [Indexed: 12/13/2022]
Abstract
A correct diagnosis of drug hypersensitivity reactions (DHRs) is very important for both the patient and health system. However, DHRs diagnosis is complex, time consuming, requires trained personnel, is not standardized for many drugs, involves procedures not exempt of risk, and in most cases lacks standardized in vivo and in vitro tests. Thus, there is an urgent need for improving the different approaches to diagnose patients with suspected DHRs. In this review, we have analyzed the advances performed in immediate and nonimmediate DHRs diagnosis during the last two years and obtained several conclusions: the significant heterogeneity in current practice among centers illustrates the need to re-evaluate, update, and standardize in vivo tests and protocols for the diagnosis and management of patients with suspected drug allergy. Regarding in vitro tests, the latest studies have focused on increasing their sensitivity or on establishing the sensitivity and specificity for the tests performed with new drugs. There seems to be a consensus about combining in vivo and in vitro tests as the best way to increase the diagnostic accuracy.
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Affiliation(s)
- Adriana Ariza
- Allergy Research Group Instituto de Investigación Biomédica de Málaga‐IBIMA‐ARADyAL Málaga Spain
| | - Cristobalina Mayorga
- Allergy Research Group Instituto de Investigación Biomédica de Málaga‐IBIMA‐ARADyAL Málaga Spain
- Allergy Unit Hospital Regional Universitario de Málaga‐ARADyAL Málaga Spain
- Andalusian Center for Nanomedicine and Biotechnology‐BIONAND Málaga Spain
| | - Gador Bogas
- Allergy Unit Hospital Regional Universitario de Málaga‐ARADyAL Málaga Spain
| | - Esther Barrionuevo
- Asthma and Immunoallergic Diseases Research Group Instituto de Investigación Hospital 12 de Octubre (i+12)‐ARADyAL Madrid Spain
- Allergy Unit Hospital Universitario 12 de Octubre Madrid Spain
| | - Maria J. Torres
- Allergy Research Group Instituto de Investigación Biomédica de Málaga‐IBIMA‐ARADyAL Málaga Spain
- Allergy Unit Hospital Regional Universitario de Málaga‐ARADyAL Málaga Spain
- Andalusian Center for Nanomedicine and Biotechnology‐BIONAND Málaga Spain
- Departamento de Medicina Universidad de Málaga Málaga Spain
| | - Inmaculada Doña
- Allergy Unit Hospital Regional Universitario de Málaga‐ARADyAL Málaga Spain
| | - Tahia D. Fernandez
- Allergy Research Group Instituto de Investigación Biomédica de Málaga‐IBIMA‐ARADyAL Málaga Spain
- Departamento de Biología Celular, Genética y Fisiología Universidad de Málaga Málaga Spain
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20
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Palanca M, Cristofolini L, Gasbarrini A, Tedesco G, Barbanti-Bròdano G. Assessing the Mechanical Weakness of Vertebrae Affected by Primary Tumors: A Feasibility Study. Materials (Basel) 2020; 13:E3256. [PMID: 32707909 DOI: 10.3390/ma13153256] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 07/15/2020] [Accepted: 07/20/2020] [Indexed: 12/14/2022]
Abstract
Patients spend months between the primary spinal tumor diagnosis and the surgical treatment, due to the need for performing chemotherapy and/or radiotherapy. During this period, they are exposed to an unknown risk of fracture. The aim of this study was to assess if it is possible to measure the mechanical strain in vertebrae affected by primary tumors, so as to open the way to an evidence-based scoring or prediction tool. We performed biomechanical tests on three vertebrae with bone tumor removed from patients. The tests were designed so as not to compromise the standard surgical and diagnostic procedures. Non-destructive mechanical tests in combination with state-of-the-art digital image correlation allowed to measure the distribution of strain on the surface of the vertebra. Our study has shown that the strains in the tumor region is circa 3 times higher than in the healthy bones, with principal strain peaks of 40,000/-20,000 microstrain, indicating a stress concentration potentially triggering vertebral fracture. This study has proven it is possible to analyze the mechanical behavior of primary tumor vertebrae as part of the clinical treatment protocol. This will allow building a tool for quantifying the risk of fracture and improving decision making in spine tumors.
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21
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Bergmann MM, Caubet JC. Role of in vivo and in vitro Tests in the Diagnosis of Severe Cutaneous Adverse Reactions (SCAR) to Drug. Curr Pharm Des 2020; 25:3872-3880. [PMID: 31696801 DOI: 10.2174/1381612825666191107104126] [Citation(s) in RCA: 12] [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: 10/03/2019] [Accepted: 11/06/2019] [Indexed: 12/18/2022]
Abstract
Severe cutaneous adverse reactions (SCAR) are life-threatening conditions including acute generalized exanthematous pustulosis (AGEP), Stevens-Johnson Syndrome (SJS), toxic epidermal necrolysis (TEN) and drug reaction with eosinophilia and systemic symptoms (DRESS). Diagnosis of causative underlying drug hypersensitivity (DH) is mandatory due to the high morbidity and mortality upon re-exposure with the incriminated drug. If an underlying DH is suspected, in vivo test, including patch tests (PTs), delayed-reading intradermal tests (IDTs) and in vitro tests can be performed in selected patients for which the suspected culprit drug is mandatory, or in order to find a safe alternative treatment. Positivity of in vivo and in vitro tests in SCAR to drug varies depending on the type of reaction and the incriminated drugs. Due to the severe nature of these reactions, drug provocation test (DPT) is highly contraindicated in patients who experienced SCAR. Thus, sensitivity is based on positive test results in patients with a suggestive clinical history. Patch tests still remain the first-line diagnostic tests in the majority of patients with SCAR, followed, in case of negative results, by delayed-reading IDTs, with the exception of patients with bullous diseases where IDTs are still contra-indicated. In vitro tests have shown promising results in the diagnosis of SCAR to drug. Positivity is particularly high when the lymphocyte transformation test (LTT) is combined with cytokines and cytotoxic markers measurement (cyto-LTT), but this still has to be confirmed with larger studies. Due to the rarity of SCAR, large multi-center collaborative studies are needed to better study the sensitivity and specificity of in vivo and in vitro tests.
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Affiliation(s)
- Marcel M Bergmann
- Pediatric Allergology Unit, Department of Child and Adolescent, University Hospitals of Geneva, Geneva, Switzerland.,Centro Pediatrico del Mendrisiotto, Mendrisio, Switzerland
| | - Jean-Christoph Caubet
- Pediatric Allergology Unit, Department of Child and Adolescent, University Hospitals of Geneva, Geneva, Switzerland
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22
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de Andrade G, Horikawa O, Drigo E, Andrade A, Cardoso J. Impeller geometry definition of the transventricular assist device. Artif Organs 2020; 44:803-810. [PMID: 32410254 DOI: 10.1111/aor.13708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 06/14/2019] [Revised: 04/10/2020] [Accepted: 04/14/2020] [Indexed: 11/29/2022]
Abstract
According to the World Health Organization, cardiovascular disease is the number one cause of death worldwide, except Africa, where Acquired Immune Deficiency Syndrome is the leading cause of death. In this scenario, the ventricular assist device (VAD) remains the unique alternative to extend patient life until heart transplantation. At Dante Pazzanese Institute of Cardiology, the research and development of an axial flow VAD to be fully implantable within the heart was started. This pump, denominated Transventricular Assist Device (TVAD), can be surgically implanted through a small left intercostal incision in a minimally invasive manner. The goal of this work is to analyze the impeller geometries of the TVAD, to avoid high shear stresses in the fluid and aim for the best conditions to support the circulatory system using computational fluid dynamics and in vitro tests. Different rotor geometries were selected according to the literature; based on the results, the best rotor was elected. This rotor contains a pair of spiral blades of constant and relatively high pitch, which pumps liquid at a flow rate of 3 L/min at 73 mm Hg. It is also expected that this rotor presents a moderate hemolysis since the shear rate is acceptable.
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Affiliation(s)
- Gustavo de Andrade
- CEAC, Instituto Dante Pazzanese de Cardiologia, Sao Paulo, Brazil.,Polytechnic School of the University of São Paulo (EPUSP), Sao Paulo, Brazil
| | - Oswaldo Horikawa
- CEAC, Instituto Dante Pazzanese de Cardiologia, Sao Paulo, Brazil
| | - Evandro Drigo
- CEAC, Instituto Dante Pazzanese de Cardiologia, Sao Paulo, Brazil
| | - Aron Andrade
- CEAC, Instituto Dante Pazzanese de Cardiologia, Sao Paulo, Brazil
| | - Jose Cardoso
- CEAC, Instituto Dante Pazzanese de Cardiologia, Sao Paulo, Brazil
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23
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Lovskaya D, Menshutina N. Alginate-Based Aerogel Particles as Drug Delivery Systems: Investigation of the Supercritical Adsorption and In Vitro Evaluations. Materials (Basel) 2020; 13:E329. [PMID: 31936834 PMCID: PMC7014114 DOI: 10.3390/ma13020329] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 01/07/2020] [Accepted: 01/09/2020] [Indexed: 11/16/2022]
Abstract
The present work focuses on the preparation of alginate-based aerogels in the form of particles for their further study as potential drug delivery systems (solid dosage forms). The dripping method was used to prepare certain gel particles, and supercritical drying was used to obtain final alginate-based aerogel particles. Three model active substances (ketoprofen, nimesulide, loratadine) were impregnated into the obtained aerogels using the supercritical adsorption process. Using the method of X-ray analysis, it was shown that the in the obtained drug-loaded aerogels the corresponding active substances are in an amorphous state, and the stability of this state after six months of storage is confirmed. In vitro dissolution tests for obtained drug-loaded aerogels was performed. For each sample, an appropriate dissolution medium (with certain pH) was determined. In vitro investigations showed the increasing of the release rate for all model active substances. Time was required to release and dissolve 50% of the active drug from drug-loaded aerogels (T1/2), reduced in comparison with pure active drugs in crystalline form. Obtained results provide insight into the application of alginate-based aerogel particles as a drug delivery system to improve pharmacokinetic properties of certain active drugs.
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Affiliation(s)
- Daria Lovskaya
- International Center for transfer of Pharmaceutical and Biotechnology, Mendeleev University of Chemical Technology of Russia, Moscow 125480, Russia;
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24
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Parfenova LV, Lukina ES, Galimshina ZR, Gil’fanova GU, Mukaeva VR, Farrakhov RG, Danilko KV, Dyakonov GS, Parfenov EV. Biocompatible Organic Coatings Based on Bisphosphonic Acid RGD-Derivatives for PEO-Modified Titanium Implants. Molecules 2020; 25:E229. [PMID: 31935900 PMCID: PMC6982944 DOI: 10.3390/molecules25010229] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 12/25/2019] [Accepted: 01/01/2020] [Indexed: 12/11/2022] Open
Abstract
Currently, significant attention is attracted to the problem of the development of the specific architecture and composition of the surface layer in order to control the biocompatibility of implants made of titanium and its alloys. The titanium surface properties can be tuned both by creating an inorganic sublayer with the desired morphology and by organic top coating contributing to bioactivity. In this work, we developed a composite biologically active coatings based on hybrid molecules obtained by chemical cross-linking of amino acid bisphosphonates with a linear tripeptide RGD, in combination with inorganic porous sublayer created on titanium by plasma electrolytic oxidation (PEO). After the addition of organic molecules, the PEO coated surface gets nobler, but corrosion currents increase. In vitro studies on proliferation and viability of fibroblasts, mesenchymal stem cells and osteoblast-like cells showed the significant dependence of the molecule bioactivity on the structure of bisphosphonate anchor and the linker. Several RGD-modified bisphosphonates of β-alanine, γ-aminobutyric and ε-aminocaproic acids with BMPS or SMCC linkers can be recommended as promising candidates for further in vivo research.
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Affiliation(s)
- Lyudmila V. Parfenova
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences, 141, Prospekt Oktyabrya, 450075 Ufa, Russia; (E.S.L.); (Z.R.G.); (G.U.G.)
| | - Elena S. Lukina
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences, 141, Prospekt Oktyabrya, 450075 Ufa, Russia; (E.S.L.); (Z.R.G.); (G.U.G.)
| | - Zulfia R. Galimshina
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences, 141, Prospekt Oktyabrya, 450075 Ufa, Russia; (E.S.L.); (Z.R.G.); (G.U.G.)
| | - Guzel U. Gil’fanova
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences, 141, Prospekt Oktyabrya, 450075 Ufa, Russia; (E.S.L.); (Z.R.G.); (G.U.G.)
| | - Veta R. Mukaeva
- Department of Theoretical Basis of Electrical Engineering, Ufa State Aviation Technical University, 12 Karl Marx Street, 450008 Ufa, Russia; (V.R.M.); (R.G.F.); (E.V.P.)
| | - Ruzil G. Farrakhov
- Department of Theoretical Basis of Electrical Engineering, Ufa State Aviation Technical University, 12 Karl Marx Street, 450008 Ufa, Russia; (V.R.M.); (R.G.F.); (E.V.P.)
| | - Ksenia V. Danilko
- Bashkir State Medical University, 3 Lenin Street, 450000 Ufa, Russia;
| | - Grigory S. Dyakonov
- Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, 12 Karl Marx Street, 450008 Ufa, Russia;
| | - Evgeny V. Parfenov
- Department of Theoretical Basis of Electrical Engineering, Ufa State Aviation Technical University, 12 Karl Marx Street, 450008 Ufa, Russia; (V.R.M.); (R.G.F.); (E.V.P.)
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25
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Coman MM, Mazzotti L, Silvi S, Scalise A, Orpianesi C, Cresci A, Verdenelli MC. Antimicrobial activity of SYNBIO ® probiotic formulation in pathogens isolated from chronic ulcerative lesions: in vitro studies. J Appl Microbiol 2019; 128:584-597. [PMID: 31602730 DOI: 10.1111/jam.14482] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 08/19/2019] [Accepted: 09/29/2019] [Indexed: 12/13/2022]
Abstract
AIMS Probiotics have the ability to enhance the immune system, produce anti-inflammatory action and promote wound healing process. The first aim of the study was to isolate pathogenic micro-organisms from sites of chronic ulcerative lesion. The second aim was to evaluate probiotic efficacy of SYNBIO® (1:1 combination of Lactobacillus rhamnosus IMC 501® and Lactobacillus paracasei IMC 502® ) in counteracting wound infections. METHODS AND RESULTS Several bacterial pathogens were isolated from chronic ulcerative lesions and identified by morphological, biochemical and molecular techniques. SYNBIO® probiotic formulation was investigated for its antimicrobial activity, minimum inhibitory concentration, co-aggregation and adherence capacity against the isolated pathogens. Moreover, SYNBIO was also tested in combination with some medical devices, using an in vitro model, in order to simulate a real ulcerative wound infection. Probiotic formulation demonstrated an inhibitory action against all the tested pathogens and their mixture (MIX), with an increased ability of co-aggregation during time. In addition, the adhesion percentage of probiotic micro-organisms to human keratinocyte (HaCaT cells) and human fibroblasts (NHF), calculated by an in vitro model, was 19% and 17% respectively, highlighting the possibility to create a protective environment preventing pathogens' biofilm formation in order to contrast infections. CONCLUSIONS SYNBIO® probiotics showed a very good antimicrobial capacity and adhesion percentage to HaCaT cells and fibroblasts, giving the opportunity to be successfully used as complement to conventional therapies in the treatment of chronic ulcerative lesions. SIGNIFICANCE AND IMPACT OF THE STUDY A new therapeutic approach with probiotics (supplemented in topical applications, excluding side effects) able to eliminate pathogenic micro-organisms and improve healing of chronic ulcerative lesions.
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Affiliation(s)
| | | | - S Silvi
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - A Scalise
- Department of Plastic and Reconstructive Surgery, Marche Polytechnic University, Ancona, Italy
| | | | - A Cresci
- Synbiotec S.r.l, Camerino, Italy
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26
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Bechara R, Pollastro S, Azoury ME, Szely N, Maillère B, de Vries N, Pallardy M. Identification and Characterization of Circulating Naïve CD4+ and CD8+ T Cells Recognizing Nickel. Front Immunol 2019; 10:1331. [PMID: 31249573 PMCID: PMC6582854 DOI: 10.3389/fimmu.2019.01331] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 05/28/2019] [Indexed: 12/24/2022] Open
Abstract
Allergic contact dermatitis caused by contact sensitizers is a T-cell-mediated inflammatory skin disease. The most prevalent contact allergens is nickel. Whereas, memory T cells from nickel-allergic patients are well-characterized, little is known concerning nickel-specific naïve T-cell repertoire. The purpose of this study was to identify and quantify naïve CD4+ and CD8+ T cells recognizing nickel in the general population. Using a T-cell priming in vitro assay based on autologous co-cultures between naïve T cells and dendritic cells loaded with nickel, we were able to detect a naïve CD4+ and CD8+ T-cell repertoire for nickel in 10/11 and 7/8 of the tested donors. We calculated a mean frequency of 0.49 nickel-specific naïve CD4+ T cells and 0.37 nickel-specific naïve CD8+ T cells per million of circulating naïve T cells. The activation of these specific T cells requires MHC molecules and alongside IFN-γ production, some nickel-specific T-cells were able to produce granzyme-B. Interestingly, nickel-specific naïve CD4+ and CD8+ T cells showed a low rate of cross-reactivity with cobalt, another metallic hapten, frequently mixed with nickel in many alloys. Moreover, naïve CD4+ T cells showed a polyclonal TCRβ composition and the presence of highly expanded clones with an enrichment and/or preferentially expansion of some TRBV genes that was donor and T-cell specific. Our results contribute to a better understanding of the mechanism of immunization to nickel and propose the T-cell priming assay as a useful tool to identify antigen-specific naïve T cells.
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Affiliation(s)
- Rami Bechara
- Inflammation Chimiokines et Immunopathologie, INSERM, Fac. de Pharmacie-Univ. Paris-Sud, Université Paris-Saclay, Châtenay-Malabry, France
| | - Sabrina Pollastro
- ARC Department of Clinical Immunology and Rheumatology and Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Marie Eliane Azoury
- Inflammation Chimiokines et Immunopathologie, INSERM, Fac. de Pharmacie-Univ. Paris-Sud, Université Paris-Saclay, Châtenay-Malabry, France
| | - Natacha Szely
- Inflammation Chimiokines et Immunopathologie, INSERM, Fac. de Pharmacie-Univ. Paris-Sud, Université Paris-Saclay, Châtenay-Malabry, France
| | - Bernard Maillère
- CEA, Institut de Biologie et de Technologies, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Niek de Vries
- ARC Department of Clinical Immunology and Rheumatology and Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Marc Pallardy
- Inflammation Chimiokines et Immunopathologie, INSERM, Fac. de Pharmacie-Univ. Paris-Sud, Université Paris-Saclay, Châtenay-Malabry, France
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27
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Kizhedath A, Wilkinson S, Glassey J. Applicability of Traditional In Vitro Toxicity Tests for Assessing Adverse Effects of Monoclonal Antibodies: A Case Study of Rituximab and Trastuzumab. Antibodies (Basel) 2018; 7:E30. [PMID: 31544882 DOI: 10.3390/antib7030030] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 08/10/2018] [Accepted: 08/14/2018] [Indexed: 11/17/2022] Open
Abstract
Monoclonal antibody (mAb) therapeutics have a promising outlook within the pharmaceutical industry having made positive strides in both research and development as well as commercialisation, however this development has been hampered by manufacturing failures and attrition. This study explores the applicability of traditional in vitro toxicity tests for detecting any off-target adverse effect elicited by mAbs on specific organ systems using hepatocarcinoma cell line (HepG2) and human dermal fibroblasts neonatal (HDFn), respectively. The mechanism of antibody dependent cytotoxicity (ADCC), complement dependent cytotoxicity (CDC) via complement activation, and complement dependent cellular cytotoxicity (CDCC) were assessed. Major results: no apparent ADCC, CDCC, or CDC mediated decrease in cell viability was measured for HepG2 cells. For HDFn cells, though ADCC or CDCC mediated decreases in cell viability wasn’t detected, a CDC mediated decrease in cell viability was observed. Several considerations have been elucidated for development of in vitro assays better suited to detect off target toxicity of mAbs.
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28
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Graça A, Gonçalves LM, Raposo S, Ribeiro HM, Marto J. Useful In Vitro Techniques to Evaluate the Mucoadhesive Properties of Hyaluronic Acid-Based Ocular Delivery Systems. Pharmaceutics 2018; 10:E110. [PMID: 30071584 DOI: 10.3390/pharmaceutics10030110] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 07/28/2018] [Accepted: 07/30/2018] [Indexed: 01/14/2023] Open
Abstract
Polymer-based eye drops are the most used drug delivery system to treat dry eye disease (DED). Therefore, the mucoadhesion between the polymer and the ocular mucin is crucial to ensure the efficacy of the treatment. In this context, the present study aimed to evaluate the potential use of in vitro methods to study the mucoadhesion of eye drop solutions and, specifically to evaluate the efficacy of two hyaluronic acid-based formulations (HA), HA 0.15% and 0.30% (w/v) to treat DED. Rheology methods and zeta potential determination were used to study the mucoadhesive properties of both eye drop solutions. All results indicated that interactions occurred between the mucin and the HA, being stronger with HA 0.30%, due to the physical entanglements and hydrogen bounding. In vitro tests on ARPE-19 cell line were performed using a 2D and a 3D dry eye model and the results have shown that pre-treated cells with HA showed a morphology more similar to the hydrated cells in both products, with a high survival rate. The in vitro techniques used in this study have been shown to be suitable to evaluate and predict mucoadhesive properties and the efficacy of the eye drops on relief or treatment of DED. The results obtained from these methods may help in inferring possible in vivo effects.
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Abstract
INTRODUCTION Diagnosing and managing drug hypersensitivity is challenging because there are no clear limits between different types of drug reactions. Distinguishing between type A (predictable) and type B (hypersensitivity) reactions when a drug is introduced on the market is not easy. When many people use a drug, adverse reactions can occur, conditioned by diverse genetic profiles, viral infections or concomitant therapy. Occasionally the only tool clinicians have on which to base the diagnosis is the clinical history. Skins tests or in vitro tests sometimes have low sensitivity or are unavailable, and drug provocation tests may be dangerous or strictly forbidden in case of severe cutaneous reactions. Areas covered: This paper reviews the diagnosis and management of the two main types of immunological reactions: IgE-mediated immediate drug hypersensitivity reactions (IDHRs) and non-immediate drug hypersensitivity reactions (NIDHRs). Expert commentary: Although Europe and the United States use different diagnostic methods, patients with history of drug hypersensitivity must avoid the suspicious drug, and clinicians must assess tolerance to safe alternatives under medical surveillance. Sometimes desensitization may be required. There is a consensus about the need to perform genetic testing for specific drugs and give patients proper documentation to prevent future exposure to culprit drugs.
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Affiliation(s)
- Javier Fernandez
- a Allergy Section , Alicante University Hospital, UMH-ISABIAL , Alicante , Spain
| | - Inmaculada Doña
- b Allergy Service , Carlos Haya Hospital (Pavilion C) , Malaga , Spain
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30
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Montañez MI, Mayorga C, Bogas G, Barrionuevo E, Fernandez-Santamaria R, Martin-Serrano A, Laguna JJ, Torres MJ, Fernandez TD, Doña I. Epidemiology, Mechanisms, and Diagnosis of Drug-Induced Anaphylaxis. Front Immunol 2017; 8:614. [PMID: 28611774 PMCID: PMC5446992 DOI: 10.3389/fimmu.2017.00614] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 05/09/2017] [Indexed: 12/14/2022] Open
Abstract
Anaphylaxis is an acute, life-threatening, multisystem syndrome resulting from the sudden release of mediators by mast cells and basophils. Although anaphylaxis is often under-communicated and thus underestimated, its incidence appears to have risen over recent decades. Drugs are among the most common triggers in adults, being analgesics and antibiotics the most common causal agents. Anaphylaxis can be caused by immunologic or non-immunologic mechanisms. Immunologic anaphylaxis can be mediated by IgE-dependent or -independent pathways. The former involves activation of Th2 cells and the cross-linking of two or more specific IgE (sIgE) antibodies on the surface of mast cells or basophils. The IgE-independent mechanism can be mediated by IgG, involving the release of platelet-activating factor, and/or complement activation. Non-immunological anaphylaxis can occur through the direct stimulation of mast cell degranulation by some drugs, inducing histamine release and leading to anaphylactic symptoms. Work-up of a suspected drug-induced anaphylaxis should include clinical history; however, this can be unreliable, and skin tests should also be used if available and validated. Drug provocation testing is not recommended due to the risk of inducing a harmful reaction. In vitro testing can help to confirm anaphylaxis by analyzing the release of mediators such as tryptase or histamine by mast cells. When immunologic mechanisms are suspected, serum-sIgE quantification or the use of the basophil activation test can help confirm the culprit drug. In this review, we will discuss multiple aspects of drug-induced anaphylaxis, including epidemiology, mechanisms, and diagnosis.
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Affiliation(s)
- Maria Isabel Montañez
- Research Laboratory, IBIMA-Regional University Hospital of Malaga-UMA, Málaga, Spain.,Andalusian Center for Nanomedicine and Biotechnology-BIONAND, Málaga, Spain
| | - Cristobalina Mayorga
- Research Laboratory, IBIMA-Regional University Hospital of Malaga-UMA, Málaga, Spain.,Allergy Unit, IBIMA-Regional University Hospital of Malaga-UMA, Málaga, Spain
| | - Gador Bogas
- Allergy Unit, IBIMA-Regional University Hospital of Malaga-UMA, Málaga, Spain
| | - Esther Barrionuevo
- Allergy Unit, IBIMA-Regional University Hospital of Malaga-UMA, Málaga, Spain
| | | | - Angela Martin-Serrano
- Research Laboratory, IBIMA-Regional University Hospital of Malaga-UMA, Málaga, Spain.,Andalusian Center for Nanomedicine and Biotechnology-BIONAND, Málaga, Spain
| | | | - Maria José Torres
- Andalusian Center for Nanomedicine and Biotechnology-BIONAND, Málaga, Spain.,Allergy Unit, IBIMA-Regional University Hospital of Malaga-UMA, Málaga, Spain
| | - Tahia Diana Fernandez
- Research Laboratory, IBIMA-Regional University Hospital of Malaga-UMA, Málaga, Spain
| | - Inmaculada Doña
- Allergy Unit, IBIMA-Regional University Hospital of Malaga-UMA, Málaga, Spain
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31
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Schmidt C, Yokaichiya F, Doğangüzel N, Dias Franco MKK, Cavalcanti LP, Brown MA, Alkschbirs MI, de Araujo DR, Kumpugdee-Vollrath M, Storsberg J. An Abraded Surface of Doxorubicin-Loaded Surfactant-Containing Drug Delivery Systems Effectively Reduces the Survival of Carcinoma Cells. Biomedicines 2016; 4:biomedicines4030022. [PMID: 28536389 PMCID: PMC5344260 DOI: 10.3390/biomedicines4030022] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 09/07/2016] [Accepted: 09/12/2016] [Indexed: 02/06/2023] Open
Abstract
An effective antitumor remedy is yet to be developed. All previous approaches for a targeted delivery of anticancer medicine have relied on trial and error. The goal of this study was to use structural insights gained from the study of delivery systems and malignant cells to provide for a systematic approach to the development of next-generation drugs. We used doxorubicin (Dox) liposomal formulations. We assayed for cytotoxicity via the electrical current exclusion method. Dialysis of the samples yielded information about their drug release profiles. Information about the surface of the delivery systems was obtained through synchrotron small-angle X-ray scattering (SAXS) measurements. SAXS measurements revealed that Dox-loading yielded an abraded surface of our Dox liposomal formulation containing soybean oil, which also correlated with an effective reduction of the survival of carcinoma cells. Furthermore, a dialysis assay revealed that a higher burst of Dox was released from soybean oil-containing preparations within the first five hours. We conclude from our results that an abraded surface of Dox-loaded drug delivery system increases their efficacy. The apparent match between surface geometry of drug delivery systems and target cells is suggested as a steppingstone for refined development of drug delivery systems. This is the first study to provide a systematic approach to developing next-generation drug carrier systems using structural insights to guide the development of next-generation drug delivery systems with increased efficacy and reduced side effects.
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Affiliation(s)
- Christian Schmidt
- Department of Biomaterials and Healthcare, Division of Life Science and Bioprocesses, Fraunhofer Institute for Applied Polymer Research (IAP), Geiselbergstraße 69, 14476 Potsdam-Golm, Germany.
| | - Fabiano Yokaichiya
- Institute of Materials and Energy, Helmholtz-Center Berlin, Hahn-Meitner-Platz 1, 14109 Berlin, Germany.
| | - Nurdan Doğangüzel
- Department of Biomaterials and Healthcare, Division of Life Science and Bioprocesses, Fraunhofer Institute for Applied Polymer Research (IAP), Geiselbergstraße 69, 14476 Potsdam-Golm, Germany.
- Department of Pharmaceutical Engineering, Beuth University of Applied Sciences Berlin, 13353 Berlin, Germany.
| | - Margareth K K Dias Franco
- Instituto de Pesquisas Energéticas e Nucleares, Avenida Lineo Prestes, 2342, Cidade Universitária Armando Salles de Oliveira, SP 05508-900, Brazil.
| | - Leide P Cavalcanti
- School of Chemical Engineering, University of Campinas, Campinas, SP 13083-970, Brazil.
| | - Mark A Brown
- Department of Clinical Sciences, Cell and Molecular Biology Program and Flint Cancer Center, Colorado State University, Fort Collins, CO 80523-1052, USA.
| | - Melissa I Alkschbirs
- Instituto de Química, Campinas, Universidade Estadual de Campinas, Campinas, SP 13083-970, Brazil.
| | - Daniele R de Araujo
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, SP 09210-580, Brazil.
| | - Mont Kumpugdee-Vollrath
- Department of Pharmaceutical Engineering, Beuth University of Applied Sciences Berlin, 13353 Berlin, Germany.
| | - Joachim Storsberg
- Department of Biomaterials and Healthcare, Division of Life Science and Bioprocesses, Fraunhofer Institute for Applied Polymer Research (IAP), Geiselbergstraße 69, 14476 Potsdam-Golm, Germany.
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Bulat Lokas S, Plavec D, Rikić Pišković J, Živković J, Nogalo B, Turkalj M. Allergen-Specific IgE Measurement: Intermethod Comparison of Two Assay Systems in Diagnosing Clinical Allergy. J Clin Lab Anal 2016; 31. [PMID: 27604174 DOI: 10.1002/jcla.22047] [Citation(s) in RCA: 9] [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: 04/11/2016] [Accepted: 07/11/2016] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Our aim was to examine the performance of IMMULITE 2000 assay for specific IgE (sIgE) by comparing it with ImmunoCAP technology in light of a clinical background. METHODS Measurements of sIgE were done in a selected patient group (N = 569; varied sample size for each allergen) and in a random sample group (N = 100; 8 allergens). sIgE results were correlated with skin-prick test results (selected patients) and medical history (nonselected patients). RESULTS We have detected fair to excellent correlation and agreement between the results of both assays, despite their methodological differences, both in selected and nonselected patient group (ρc = 0.431-0.976; ρc = 0.390-0.972, respectively). Associations of sIgE levels with skin-prick test (SPT) levels and medical history have shown significant correlation for both assays for majority of tested allergens, where applicable (D. pteronyssinus, cat dander, egg white, milk, peanut, orchard grass, Alternaria tenuis, and common ragweed in selected patients; birch, cat dander, common ragweed, D. pteronyssinus, and orchard grass in nonselected; P < 0.05 for all). CONCLUSIONS Laboratory testing for sIgE can be successfully accomplished by IMMULITE 2000 immunoanalyzer at a diagnostic accuracy relative to SPT, comparable to the results acquired by CAP technology but not fully comparable on the level of an individual patient.
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Affiliation(s)
| | - Davor Plavec
- Children's Hospital Srebrnjak, Zagreb, Croatia.,Faculty of Medicine, Josip Juraj Strossmayer University Osijek, Osijek, Croatia
| | | | | | - Boro Nogalo
- Children's Hospital Srebrnjak, Zagreb, Croatia.,Faculty of Medicine, Josip Juraj Strossmayer University Osijek, Osijek, Croatia
| | - Mirjana Turkalj
- Children's Hospital Srebrnjak, Zagreb, Croatia.,Faculty of Medicine, Josip Juraj Strossmayer University Osijek, Osijek, Croatia
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Lassalle Y, Nicol É, Genty C, Bourcier S, Bouchonnet S. Structural elucidation and estimation of the acute toxicity of the major UV-visible photoproduct of fludioxonil - detection in both skin and flesh samples of grape. J Mass Spectrom 2015; 50:864-869. [PMID: 26169141 DOI: 10.1002/jms.3598] [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] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 03/05/2015] [Accepted: 03/27/2015] [Indexed: 06/04/2023]
Abstract
Ultraviolet (UV)-visible irradiation of fludioxonil was investigated with two photoreactors using either a mercury or xenon vapor lamp. In both cases, it led to the formation of only one photoproduct in significant amount: 2-(2,2-difluorobenzo[d][1,3]dioxol-4-yl)-2-(nitrosomethylene)-4-oxobutanenitrile, which has been characterized using Liquid Chromatography - High Resolution - Tandem Mass Spectrometry (LC-HR-MS/MS) coupling. A photolysis pathway has been proposed to rationalize its formation in degassed water. In vitro bioassays on Vibrio fischeri bacteria showed that UV-vis irradiation of an aqueous solution of fludioxonil significantly increases its toxicity. Because no other by-product was detected in significant amount, the photoproduct mentioned above may be considered mainly responsible for this increase in toxicity. Grape berries treated with a 50 ppm aqueous solution of fludioxonil were submitted to UV-visible irradiation under laboratory conditions. The fungicide and photoproduct were detected in both skin and flesh of berries, even after they have been rinsed with water. The ability of the photoproduct to pass through the fruit skin is comparable with that of fludioxonil. These results are of concern for consumers because they mean that water tap rinsing does not lead to efficient removing of both compounds.
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Affiliation(s)
- Yannick Lassalle
- Laboratoire de Chimie Moléculaire - UMR 9168, École Polytechnique, Palaiseau Cedex, 91128, France
| | - Édith Nicol
- Laboratoire de Chimie Moléculaire - UMR 9168, École Polytechnique, Palaiseau Cedex, 91128, France
| | - Christophe Genty
- Laboratoire de Chimie Moléculaire - UMR 9168, École Polytechnique, Palaiseau Cedex, 91128, France
| | - Sophie Bourcier
- Laboratoire de Chimie Moléculaire - UMR 9168, École Polytechnique, Palaiseau Cedex, 91128, France
| | - Stéphane Bouchonnet
- Laboratoire de Chimie Moléculaire - UMR 9168, École Polytechnique, Palaiseau Cedex, 91128, France
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Becker FF, Banik BK. Polycyclic aromatic compounds as anticancer agents: synthesis and biological evaluation of methoxy dibenzofluorene derivatives. Front Chem 2014; 2:55. [PMID: 25136549 PMCID: PMC4117931 DOI: 10.3389/fchem.2014.00055] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2014] [Accepted: 07/08/2014] [Indexed: 11/13/2022] Open
Abstract
Synthesis of a new methoxy dibenzofluorene through alkylation, cyclodehydration and aromatization in a one-pot operation is achieved for the first time. Using this hydrocarbon, a few derivatives are prepared through aromatic nitration, catalytic hydrogenation, coupling reaction with a side chain and reduction. The benzylic position of this hydrocarbon with the side chain is oxidized and reduced. Some of these derivatives have demonstrated excellent antitumor activities in vitro. This study confirms antitumor activity depends on the structures of the molecules.
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Affiliation(s)
- Frederick F Becker
- Department of Translational Molecular Pathology, M. D. Anderson Cancer Center, The University of Texas Houston, TX USA
| | - Bimal K Banik
- Department of Translational Molecular Pathology, M. D. Anderson Cancer Center, The University of Texas Houston, TX USA
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Masthoff LJ, Hoff R, Verhoeckx KCM, van Os-Medendorp H, Michelsen-Huisman A, Baumert JL, Pasmans SG, Meijer Y, Knulst AC. A systematic review of the effect of thermal processing on the allergenicity of tree nuts. Allergy 2013; 68:983-93. [PMID: 23889537 DOI: 10.1111/all.12185] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/11/2013] [Indexed: 12/22/2022]
Abstract
BACKGROUND Allergenicity of foods can be influenced by processing. Tree nuts are an important source of nutrition and increasingly consumed; however, processing methods are quite variable and data are currently lacking on the effects of processing on allergenicity. OBJECTIVE To perform a systematic literature review on the effects of food processing on the allergenicity of tree nuts. METHODS A systematic literature search of PubMed and Embase databases was performed, with screening of references, related articles and citations. Studies were included if they assessed the allergenicity or immunogenicity of processed nuts. RESULTS The search resulted in 32 articles suitable for analysis. Clinical studies indicate that roasting reduces the allergenicity of hazelnut in individuals with a birch pollen allergy and reactivity to raw hazelnut. Thermal processing may reduce the allergenicity of the PR-10 protein in hazelnut and almond in vitro. The majority of the in vitro studies investigating the allergenicity of nonspecific lipid transfer proteins (nsLTPs) and seed storage proteins in hazelnut, almond, cashew nut, Brazil nut, walnut, pecan nut and pistachio nut show heat stability towards different thermal processing methods. CONCLUSION Thermal processing may reduce allergenicity of PR-10 proteins in hazelnut and almond, in contrast to nsLTPs and seed storage proteins. This has important implications for source materials used for IgE testing and food challenges and diet advice.
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Affiliation(s)
- L. J. Masthoff
- Department of Dermatology/Allergology; University Medical Center Utrecht; Utrecht; The Netherlands
| | - R. Hoff
- Department of Dermatology/Allergology; University Medical Center Utrecht; Utrecht; The Netherlands
| | | | - H. van Os-Medendorp
- Department of Dermatology/Allergology; University Medical Center Utrecht; Utrecht; The Netherlands
| | - A. Michelsen-Huisman
- Department of Dermatology/Allergology; University Medical Center Utrecht; Utrecht; The Netherlands
| | - J. L. Baumert
- Food Allergy Research and Resource Program; University of Nebraska; Lincoln; NE; USA
| | | | | | - A. C. Knulst
- Department of Dermatology/Allergology; University Medical Center Utrecht; Utrecht; The Netherlands
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