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Feng W, Zhu C, Miao R, Li D, Xiong X, Wang R, Liu G, Ma J. Comparative efficacy of endogenous stem cells recruiting hydrogels and stem cell-loaded hydrogels in knee cartilage regeneration: a meta-analysis. Curr Stem Cell Res Ther 2023; 19:CSCR-EPUB-134558. [PMID: 37711133 DOI: 10.2174/1574888x19666230914123443] [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: 02/17/2023] [Revised: 07/10/2023] [Accepted: 07/24/2023] [Indexed: 09/16/2023]
Abstract
Background Cartilage defects remain a challenge in diseases such as osteoarthritis (OA) and fractures. Scientists have explored the use of hydrogels in conjunction with stem cell technology as a tissue engineering method to treat cartilage defects in joints. In recent years, research into hydrogels containing stem cell technology for cartilage repair has mainly focused on two categories: stem cell-loaded hydrogels and endogenous stem cell recruiting hydrogels. The latter, utilizing cell-free products, represents a novel concept with several advantages, including easier dose standardization, wider sources, and simpler storage. This meta-analysis aims to assess and compare the therapeutic effects of endogenous stem cell recruiting hydrogels and stem cell-loaded hydrogels in promoting articular cartilage regeneration in animal models, with the goal of exploring endogenous stem cell recruiting hydrogels as a promising replacement therapy for knee cartilage regeneration in preclinical animal studies. Methods We systematically searched PubMed, Web of Science, Cochrane Library, and Embase until January 2023 using key words related to stem cells, cartilage regeneration and hydrogel. A random-effects meta-analysis was performed to evaluate the therapeutic effect on newborn cartilage formation. Stratified analyses were also carried out by independently classifying trials according to similar characteristics. The level of evidence was determined using the GRADE method. Results Twenty-eight studies satisfied the inclusion criteria. Comprehensive analyses revealed that the use of endogenous stem cell recruiting hydrogels significantly promoted the formation of new cartilage in the knee joint, as evidenced by the histological score (3.77, 95% CI 2.40, 5.15; p < 0.0001) and the International Cartilage Repair Society (ICRS) macroscopic score (3.00, 95% CI 1.83, 4.18; p = 0.04), compared with the control group. The stem cell-loaded hydrogels also increased cartilage regeneration in the knee with the histological score (3.13, 95% CI 2.22, 4.04; p = 0.02) and the ICRS macroscopic score (2.49, 95% CI 1.16, 3.82; p =0.03) in comparison to the control. Significant heterogeneity between studies was observed, and further stratified and sensitivity analyses identified the transplant site and modelling method as the sources of heterogeneity. Conclusion The current study indicates that both endogenous stem cell recruiting hydrogels and stem cell loaded hydrogels can effectively promote knee joint cartilage regeneration in animal trials.
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Affiliation(s)
- Wanyun Feng
- Hebei Medical University-National University of Ireland Galway Stem Cell Research Center, Hebei Medical University, Hebei Province 050017, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Hebei Province 050017, China
| | - Chaohua Zhu
- The First Hospital of Hebei Medical University, Hebei Province 050000, China
| | - Ruoxiang Miao
- Hebei Medical University-National University of Ireland Galway Stem Cell Research Center, Hebei Medical University, Hebei Province 050017, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Hebei Province 050017, China
| | - Danni Li
- Hebei Medical University-National University of Ireland Galway Stem Cell Research Center, Hebei Medical University, Hebei Province 050017, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Hebei Province 050017, China
| | - Xi Xiong
- Hebei Medical University-National University of Ireland Galway Stem Cell Research Center, Hebei Medical University, Hebei Province 050017, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Hebei Province 050017, China
| | - Ruyu Wang
- Hebei Medical University-National University of Ireland Galway Stem Cell Research Center, Hebei Medical University, Hebei Province 050017, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Hebei Province 050017, China
| | - Guobing Liu
- The First Hospital of Hebei Medical University, Hebei Province 050000, China
| | - Jun Ma
- Hebei Medical University-National University of Ireland Galway Stem Cell Research Center, Hebei Medical University, Hebei Province 050017, China
- Hebei Research Center for Stem Cell Medical Translational Engineering, Hebei Province 050017, China
- Human Anatomy Department, Hebei Medical University, Hebei Province 050017, China
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Nawaz M, Ashraf MA, Ali MA, Shabbir MZ, Shabbir MAB, Altaf I, Raza S, Rafique S, Hassan S, Sardar N, Mehmood A, Aziz MW, Fazal S, Khan MT, Atique HMM, Asif A, Ullah Z, Iqbal M, Imtiaz T, Anwar M, Mukhtar N, Yaqub T. Renessans Helps in Early Clearance of SARS-CoV-2: In-Vivo Activity of the Iodine Complex in Rhesus macaque. Life (Basel) 2022; 12:life12091424. [PMID: 36143459 PMCID: PMC9571793 DOI: 10.3390/life12091424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/07/2022] [Accepted: 09/09/2022] [Indexed: 02/08/2023]
Abstract
Iodine complexes have known antimicrobial properties along with reported in-vitro antiviral activity for several viruses. Renessans is one such product with iodine complexes and ascorbic acid. The present study was designed to determine its efficacy for SARS-CoV-2 in Rhesus macaque. Rhesus macaque were assigned to: A) prophylactic group (n = 3), (B) treatment group (n = 3), (C) infection control group (n = 4), and (D) negative control group (n = 4). Groups A, B, and C were challenged with 2 × 106 TCID of SARS-CoV-2. The prophylactic group (A) was administered Renessans from 5 days before infection till 8 days postinfection (DPI). The treatment group (B) was administered Renessans from 3 till 8 DPI. Group C was administered water-insoluble fractions only. Nasal swabs from all monkeys of groups A, B, and C remained positive for SARS-CoV-2 till 2 and 7 DPI, while the swabs became negative for groups A and B at 14 DPI. Likewise, fecal matter of monkeys in group A returned negative results during the experiment, while that of group B had significantly decreased viral load (101.5 genome copies/mL) compared to group C (103 genome copies/mL). Hence, it is concluded that Renessans has in-vivo SARS-CoV-2 activity and may result in early clearance of SARS-CoV-2.
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Affiliation(s)
- Muhammad Nawaz
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Muhammad Adnan Ashraf
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Muhammad Asad Ali
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Muhammad Zubair Shabbir
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | | | - Imran Altaf
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Sohail Raza
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Saira Rafique
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Sohail Hassan
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Nageen Sardar
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Adnan Mehmood
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Muhammad Waqar Aziz
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Sehar Fazal
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Muhammad Tahir Khan
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | | | - Ali Asif
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Zia Ullah
- Pet Centre, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Mubashir Iqbal
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Talha Imtiaz
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Muhammad Anwar
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Nadia Mukhtar
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Tahir Yaqub
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
- Correspondence:
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Schlottau K, Nobach D, Herden C, Finke S, Beer M, Hoffmann D. First isolation, in-vivo and genomic characterization of zoonotic variegated squirrel Bornavirus 1 (VSBV-1) isolates. Emerg Microbes Infect 2021; 9:2474-2484. [PMID: 33151793 PMCID: PMC7717607 DOI: 10.1080/22221751.2020.1847604] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The variegated squirrel bornavirus 1 (VSBV-1), a member of the family Bornaviridae, was discovered in 2015 in a series of lethal human infections. Screening approaches revealed kept exotic squirrels as the putative source of infection. Infectious virus was successfully isolated by co-cultivation of infected primary squirrel cells with permanent cell lines. For in vivo characterization, neonatal and adult Lewis rats were inoculated either intracranially, intranasally or subcutaneously. After 4.5 months, three out of fifteen neonatal intracranially inoculated rats were VSBV-1 genome positive in the central nervous system without showing clinical signs. Pathohistological examination revealed a non-purulent encephalitis. While infection of immune incompetent rats (neonatal) using the type species of mammalian bornaviruses, the Borna disease virus 1, proceed to an immune tolerant status, VSBV-1 infection could result in inflammation of neuronal tissue. Sequencing showed minor adaptations within the VSBV-1 genome comparing to the viral genomes from infected squirrels, cell cultures or rat tissues. In conclusion, we were able to generate the first VSBV-1 isolates and provide in vivo animal model data in Lewis rats revealing substantial differences between VSBV-1 and BoDV-1. Furthermore, the presented data are a precondition for insights into the transmission and pathogenesis of this novel zoonotic pathogen.
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Affiliation(s)
- Kore Schlottau
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany
| | - Daniel Nobach
- Justus-Liebig-Universität, Institut für Veterinär-Pathologie, Gießen, Germany
| | - Christiane Herden
- Justus-Liebig-Universität, Institut für Veterinär-Pathologie, Gießen, Germany.,Center of Mind, Brain and Behavior, Justus-Liebig-University Gießen, Gießen, Germany
| | - Stefan Finke
- Institute of Molecular Virology and Cell Biology, Friedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany
| | - Martin Beer
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany
| | - Donata Hoffmann
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany
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Fursov MV, Abdrakhmanova RO, Antonova NP, Vasina DV, Kolchanova AD, Bashkina OA, Rubalsky OV, Samotrueva MA, Potapov VD, Makarov VV, Yudin SM, Gintsburg AL, Tkachuk AP, Gushchin VA, Rubalskii EO. Antibiofilm Activity of a Broad-Range Recombinant Endolysin LysECD7: In Vitro and In Vivo Study. Viruses 2020; 12:E545. [PMID: 32429199 DOI: 10.3390/v12050545] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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: 04/01/2020] [Revised: 05/02/2020] [Accepted: 05/11/2020] [Indexed: 12/11/2022] Open
Abstract
Surfaces of implanted medical devices are highly susceptible to biofilm formation. Bacteria in biofilms are embedded in a self-produced extracellular matrix that inhibits the penetration of antibiotics and significantly contributes to the mechanical stability of the colonizing community which leads to an increase in morbidity and mortality rate in clinical settings. Therefore, new antibiofilm approaches and substances are urgently needed. In this paper, we test the efficacy of a broad-range recombinant endolysin of the coliphage LysECD7 against forming and mature biofilms. We used a strong biofilm producer-Klebsiella pneumoniae Ts 141-14 clinical isolate. In vitro investigation of the antibacterial activity was performed using the standard biofilm assay in microtiter plates. We optimized the implantable diffusion chamber approach in order to reach strong biofilm formation in vivo avoiding severe consequences of the pathogen for the animals and to obtain a well-reproducible model of implant-associated infection. Endolysin LysECD7 significantly reduced the biofilm formation and was capable of degrading the preformed biofilm in vitro. The animal trials on the preformed biofilms confirmed these results. Overall, our results show that LysECD7 is a promising substance against clinically relevant biofilms.
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Wildburger A, Bubalo V, Magyar M, Nagursky H, Jakse N, Schmelzeisen R, Sauerbier S. Sinus Floor Augmentation Comparing an In Situ Hardening Biphasic Calcium Phosphate (Hydroxyapatite/β-Tricalcium Phosphate) Bone Graft Substitute with a Particulate Biphasic Calcium Phosphate (Hydroxyapatite/β-Tricalcium Phosphate) Bone Graft Substitute: An Experimental Study in Sheep. Tissue Eng Part C Methods 2018; 23:404-411. [PMID: 28605989 DOI: 10.1089/ten.tec.2016.0549] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE The aim of the present split-mouth study in sheep was to assess the influence of in situ hardening properties of a biphasic calcium phosphate (BCP) bone graft substitute (BGS) (ratio hydroxyapatite/β-tricalcium phosphate = 60/40) compared with a particulate BGS with the same biphasic core-granule composition without in situ hardening properties on sinus floor augmentation. MATERIALS AND METHODS Therefore, bilateral sinus floor augmentation was performed in eight sheep. Poly(lactide-co-glycolide) (PLGA)-coated, in situ hardening biphasic BGS (PLGA-NMP [N-Methyl-2-pyrrolidone]-BCP) was placed at the test site, and a particulate biphasic BGS without PLGA coating (BCP) was used for the contralateral site as a control. Animals were sacrificed after 21 weeks. Sinus augmentation sites were analyzed histologically. The volume was analyzed by computed tomography. Histomorphometric parameters were assessed for the 12 and 21 weeks' time points. Slopes of new bone formation over time were compared with a linear growth regression model. RESULTS Bone formation after 12 and 21 weeks of healing was 8.94% (±3.74) and 19.82% (±6.29) for PLGA-NMP-BCP and 7.00% (±2.58) and 14.38% (±4.51) for BCP, respectively. The bone growth rate for PLGA-NMP-BCP was higher than the growth rate for BCP (probability 97.5%). The total fraction of calcified hard tissue (% bone fraction + % biomaterial) was around 46% for both tested biomaterials, 21 weeks after sinus floor augmentation. CONCLUSION The in situ hardening BGS (PLGA-NMP-BCP) performed better than the particulate material (BCP) in terms of bone formation rate. The in situ hardening properties of the PLGA-NMP-BCP material mediated by the PLGA coating and NMP solution as plasticizer had no negative influence on the bone formation.
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Affiliation(s)
- Angelika Wildburger
- 1 Department of Oral Surgery and Orthodontics, School of Dentistry, Medical University of Graz , Graz, Austria
| | - Vladimir Bubalo
- 2 Division of Biomedical Research, Medical University of Graz , Graz, Austria
| | - Marton Magyar
- 3 Department of Radiology, Medical University Graz , Graz, Austria
| | - Heiner Nagursky
- 4 Hard Tissue Research Laboratory, Department of Oral and Maxillofacial Surgery, University Hospital of Freiburg , Freiburg, Germany
| | - Norbert Jakse
- 1 Department of Oral Surgery and Orthodontics, School of Dentistry, Medical University of Graz , Graz, Austria
| | - Rainer Schmelzeisen
- 5 Department of Oral and Maxillofacial Surgery, University Hospital of Freiburg , Freiburg, Germany
| | - Sebastian Sauerbier
- 6 Department of Oral and Maxillofacial Surgery, University Hospital of Tübingen , Tübingen, Germany .,7 Private Practitioner and Consultant for Oral and Maxillofacial Surgery, at Municipal Hospital Fulda , Fulda, Germany
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Wester M, Gerritsen KG, Simonis F, Boer WH, Hazenbrink DH, Vaessen KR, Verhaar MC, Joles JA. A regenerable potassium and phosphate sorbent system to enhance dialysis efficacy and device portability: a study in awake goats. Nephrol Dial Transplant 2018; 32:951-959. [PMID: 27220758 DOI: 10.1093/ndt/gfw108] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Accepted: 04/02/2016] [Indexed: 01/31/2023] Open
Abstract
Background Patients on standard intermittent haemodialysis suffer from strong fluctuations in plasma potassium and phosphate. Prolonged dialysis with a wearable device, based on continuous regeneration of a small volume of dialysate using ion exchangers, could moderate these fluctuations and offer increased clearance of these electrolytes. We report in vivo results on the efficacy of potassium and phosphate adsorption from a wearable dialysis device. We explore whether equilibration of ion exchangers at physiological Ca 2+ , Mg 2+ and hypotonic NaCl can prevent calcium/magnesium adsorption and net sodium release, respectively. Effects on pH and HCO3- were studied. Methods Healthy goats were instrumented with a central venous catheter and dialysed. Potassium and phosphate were infused to achieve plasma concentrations commonly observed in dialysis patients. An adsorption cartridge containing 80 g sodium poly(styrene-divinylbenzene) sulphonate and 40 g iron oxide hydroxide beads for potassium and phosphate removal, respectively, was incorporated in a dialysate circuit. Sorbents were equilibrated and regenerated with a solution containing NaCl, CaCl 2 and MgCl 2 . Blood was pumped over a dialyser and dialysate was recirculated over the adsorption cartridge in a countercurrent direction. Results Potassium and phosphate adsorption was 7.7 ± 2.7 and 4.9 ± 1.3 mmol in 3 h, respectively. Adsorption capacity remained constant during consecutive dialysis sessions and increased with increasing K + and PO43-. Equilibration at physiological Ca 2+ and Mg 2+ prevented net adsorption, eliminating the need for post-cartridge calcium and magnesium infusion. Equilibration at hypotonic NaCl prevented net sodium release Fe 2+ and arterial pH did not change. Bicarbonate was adsorbed, which could be prevented by equilibrating at HCO3- 15 mM. Conclusion We demonstrate clinically relevant, concentration-dependent, pH-neutral potassium and phosphate removal in vivo with small volumes of regenerable ion exchangers in our prototype wearable dialysis device. Application of the selected ion exchangers for potassium and phosphate removal in a wearable dialysis device appears to be effective with a low-risk profile.
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Affiliation(s)
- Maarten Wester
- Department of Nephrology and Hypertension, Regenerative Medicine Center Utrecht, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Karin G Gerritsen
- Department of Nephrology and Hypertension, Regenerative Medicine Center Utrecht, University Medical Center Utrecht, Utrecht, The Netherlands
| | | | - Walther H Boer
- Department of Nephrology and Hypertension, Regenerative Medicine Center Utrecht, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Diënty H Hazenbrink
- Department of Nephrology and Hypertension, Regenerative Medicine Center Utrecht, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Koen R Vaessen
- Central Laboratory Animal Research Facility, Utrecht University, Utrecht, The Netherlands
| | - Marianne C Verhaar
- Department of Nephrology and Hypertension, Regenerative Medicine Center Utrecht, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Jaap A Joles
- Department of Nephrology and Hypertension, Regenerative Medicine Center Utrecht, University Medical Center Utrecht, Utrecht, The Netherlands
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Bréard E, Schulz C, Sailleau C, Bernelin-Cottet C, Viarouge C, Vitour D, Guillaume B, Caignard G, Gorlier A, Attoui H, Gallois M, Hoffmann B, Zientara S, Beer M. Bluetongue virus serotype 27: Experimental infection of goats, sheep and cattle with three BTV-27 variants reveal atypical characteristics and likely direct contact transmission BTV-27 between goats. Transbound Emerg Dis 2017; 65:e251-e263. [PMID: 29243405 DOI: 10.1111/tbed.12780] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [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: 07/07/2017] [Indexed: 11/30/2022]
Abstract
Bluetongue virus (BTV) hitherto consisted of 26 recognized serotypes, of which all except BTV-26 are primarily transmitted by certain species of Culicoides biting midges. Three variants of an additional 27th bluetongue virus serotype (BTV-27v01-v03) were recently detected in asymptomatic goats in Corsica, France, 2014-2015. Molecular characterization revealed genetic differences between the three variants. Therefore, in vivo characteristics were investigated by experimental infection of a total of 15 goats, 11 sheep and 4 cattle with any one of the three variants in separated animal trials. In goat trials, BTV-naïve animals of the same species were kept in a facility where direct contact was unhindered. Of the 15 inoculated goats, 13 and 14 animals were found positive for BTV-RNA and antibodies (Ab), respectively, until the end of the experiments. Surprisingly, BTV-Ab levels as measured with ELISA and neutralization test (SNT) were remarkably low in all seropositive goats. Virus isolation from whole-blood was possible at the peak of viremia until 49 dpi. Moreover, detection of BTV-27v02-RNA and Ab in one contact goat indicated that-similar to BTV-26-at least one of three BTV-27 variants may be transmitted by contact between goats. In the field, BTV-27 RNA can be detected up to 6 months in the whole-blood of BTV-27-infected Corsican goats. In contrast, BTV RNA was not detected in the blood of cattle or sheep. In addition, BTV-27 Abs were not detected in cattle and only a transient increase in Ab levels was observed in some sheep. None of the 30 animals showed obvious BT-like clinical signs. In summary, the phenotypes observed for BTV-27v01-v03 phenotypes correspond to a mixture of characteristics known for BTV-25 and 26.
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Affiliation(s)
- E Bréard
- Laboratoire de Santé Animale d'Alfort, Université Paris Est, ANSES, ENVA, INRA, UMR 1161 VIROLOGIE, Maisons-Alfort, France
| | - C Schulz
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany
| | - C Sailleau
- Laboratoire de Santé Animale d'Alfort, Université Paris Est, ANSES, ENVA, INRA, UMR 1161 VIROLOGIE, Maisons-Alfort, France
| | - C Bernelin-Cottet
- Virologie et Immunologie Moléculaires, UR892 INRA, Domaine de Vilvert, Jouy-en-Josas, France
| | - C Viarouge
- Laboratoire de Santé Animale d'Alfort, Université Paris Est, ANSES, ENVA, INRA, UMR 1161 VIROLOGIE, Maisons-Alfort, France
| | - D Vitour
- Laboratoire de Santé Animale d'Alfort, Université Paris Est, ANSES, ENVA, INRA, UMR 1161 VIROLOGIE, Maisons-Alfort, France
| | - B Guillaume
- Ecole Nationale Veterinaire d'Alfort, Unite de Pathologie du Betail, Universite Paris-Est, Maisons-Alfort, France
| | - G Caignard
- Laboratoire de Santé Animale d'Alfort, Université Paris Est, ANSES, ENVA, INRA, UMR 1161 VIROLOGIE, Maisons-Alfort, France
| | - A Gorlier
- Laboratoire de Santé Animale d'Alfort, Université Paris Est, ANSES, ENVA, INRA, UMR 1161 VIROLOGIE, Maisons-Alfort, France
| | - H Attoui
- Laboratoire de Santé Animale d'Alfort, Université Paris Est, ANSES, ENVA, INRA, UMR 1161 VIROLOGIE, Maisons-Alfort, France
| | - M Gallois
- Regional Federation of Corsican Animal Health Groups, FRGDSB20, Ajaccio, France
| | - B Hoffmann
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany
| | - S Zientara
- Laboratoire de Santé Animale d'Alfort, Université Paris Est, ANSES, ENVA, INRA, UMR 1161 VIROLOGIE, Maisons-Alfort, France
| | - M Beer
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany
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Kämmerer TA, Palarie V, Schiegnitz E, Topalo V, Schröter A, Al-Nawas B, Kämmerer PW. A biphasic calcium phosphate coating for potential drug delivery affects early osseointegration of titanium implants. J Oral Pathol Med 2016; 46:61-66. [PMID: 27272434 DOI: 10.1111/jop.12464] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/10/2016] [Indexed: 12/11/2022]
Abstract
BACKGROUND Calcium phosphate (CaP) surface coatings may accelerate osseointegration and serve as a drug delivery system for mineral-binding biomolecules. In a pilot study, the impact of a commercially available, thin CaP coating on early osseous bone remodeling was compared with a modern, subtractive-treated rough surface (SLA-like) in an animal trial. METHODS In 16 rabbits, 32 endosseous implants (CaP; n = 16, SLA-like; n = 16) were bilaterally inserted in the proximal tibia after randomization. After 2 and 4 weeks, bone-implant contact (BIC;%) in the cortical (cBIC) and the trabecular bone (sBIC) as well as volume of bone within the screw thread with the highest amount of new-formed bone (area;%) were analyzed. RESULTS After 2 weeks, cBIC was significantly higher for CaP when compared with SLA-like (58 ± 7% versus 40.4 ± 18%; P = 0.021). sBIC for CaP was 14.7 ± 8% and for SLA-like 7.2 ± 7.8% (P = 0.081). For area, the mean volumes were 82.8 ± 10.8% for CaP and 73.6 ± 22% for SLA-like (P = 0.311). After 4 weeks, cBIC was 42.9 ± 13% for the CaP and 46.5 ± 29.1% for the SLA-like group (P = 0.775). An sBIC of 6.9 ± 9.3% was calculated for CaP and of 12.3 ± 4.8% for SLA-like (P = 0.202). The values for area were 62.3 ± 24.1% for CaP and 50.1 ± 25.9% for SLA-like (P = 0.379). CONCLUSIONS The CaP coating has putative additional advantages in the early osseoconduction phases. It seems suitable for a feasible and clinical applicable bioactivation.
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Affiliation(s)
- Till A Kämmerer
- Department of Oral, Maxillofacial and Plastic Surgery, University Medical Center Mainz, Mainz, Germany
| | - Victor Palarie
- Laboratory of Tissue Engineering, State University of Medicine and Pharmacy "N. Testemitanu", Chisinau, Moldova
| | - Eik Schiegnitz
- Department of Oral, Maxillofacial and Plastic Surgery, University Medical Center Mainz, Mainz, Germany
| | - Valentin Topalo
- Clinic for Oral & Maxillofacial Surgery, State University of Medicine and Pharmacy "N. Testemitanu", Chisinau, Moldova
| | | | - Bilal Al-Nawas
- Department of Oral, Maxillofacial and Plastic Surgery, University Medical Center Mainz, Mainz, Germany
| | - Peer W Kämmerer
- Department of Oral, Maxillofacial and Plastic Surgery, University Medical Center Rostock, Rostock, Germany
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