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Jain DA, Gupta N, Sharma DP, Gupta DOP, Gupta DS, Sahoo DAK. Histomorphometric Image Classifier of Different Grades of Oral Squamous Cell Carcinoma Using Transfer Learning and Convolutional Neural Network. J Stomatol Oral Maxillofac Surg 2024:101876. [PMID: 38636805 DOI: 10.1016/j.jormas.2024.101876] [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] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 04/05/2024] [Accepted: 04/12/2024] [Indexed: 04/20/2024]
Abstract
BACKGROUND Machine learning is an emerging technology in health care field with aim of fundamentally revamping the traditional system and aiding medical practitioners. The histopathological analysis of oral cancers is crucial for pathologist to ascertain its grading. Therefore, this study attempts to grade the various stained tissue samples of OSCC (Oral Squamous Cell Carcinoma) patients using different deep-learning models. METHODS A dataset of 120 histopathological images of OSCC was collected and classified as well-differentiated (40), moderately differentiated (40), and poorly differentiated (40) according to Broders' grading system. The CNN (Convoluted neural networks) architectures were based on the pre-trained neural network models VGG16 (Visual Geometry Group16), VGG19 (Visual Geometry Group19), RESNET50 (Residual Network50), and DENSENET121 (Dense Network121) models for image analysis. RESULTS At a magnification of 4x, all four models achieved the highest test accuracy of 66.67%. DENSENET121 scored the highest validation accuracy of 81%. At 10x, RESNET50, VGG19, and DENSENET121 achieved the highest test accuracy of 90.9% and VGG19 achieved the highest validation accuracy of 83.3%. At 40x, the highest test accuracy of 70% was achieved by RESNET50 and DENSENET121. The validation accuracy was comparable between RESNET50, VGG16, and VGG19. CONCLUSION The grading of tissues with the help of deep learning in digital imaging and computational aid in the diagnosis can help in timely and effective prognosis and multi-modal treatment protocols for oral cancer patients, thus reducing the operational workload of pathologists. By systematically evaluating model performance and addressing concerns about overfitting, we develop robust models suitable for medical diagnosis.
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Affiliation(s)
- Dr Ayushi Jain
- Department of Oral Pathology, King George's Medical University, Lucknow 226003, UP, India
| | - Nitika Gupta
- Department of Oral Pathology, King George's Medical University, Lucknow 226003, UP, India
| | - Dr Pooja Sharma
- Department of Oral Pathology, King George's Medical University, Lucknow 226003, UP, India
| | - Dr Om Prakash Gupta
- Department of General Surgery, Career Institute of Medical sciences, Lucknow 226003, UP, India
| | - Dr Shalini Gupta
- Department of Oral Pathology, King George's Medical University, Lucknow 226003, UP, India.
| | - Dr Amaresh Kumar Sahoo
- Department of Applied Sciences, Indian Institute of Information Technology Allahabad, Prayagraj 211012, UP, India.
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Gil-Melgosa L, Llombart-Blanco R, Extramiana L, Lacave I, Abizanda G, Miranda E, Agirre X, Prósper F, Pineda-Lucena A, Pons-Villanueva J, Pérez-Ruiz A. HDACi vorinostat protects muscle from degeneration after acute rotator cuff injury in mice. Bone Joint Res 2024; 13:169-183. [PMID: 38618868 PMCID: PMC11017234 DOI: 10.1302/2046-3758.134.bjr-2023-0292.r1] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/16/2024] Open
Abstract
Aims Rotator cuff (RC) injuries are characterized by tendon rupture, muscle atrophy, retraction, and fatty infiltration, which increase injury severity and jeopardize adequate tendon repair. Epigenetic drugs, such as histone deacetylase inhibitors (HDACis), possess the capacity to redefine the molecular signature of cells, and they may have the potential to inhibit the transformation of the fibro-adipogenic progenitors (FAPs) within the skeletal muscle into adipocyte-like cells, concurrently enhancing the myogenic potential of the satellite cells. Methods HDACis were added to FAPs and satellite cell cultures isolated from mice. The HDACi vorinostat was additionally administered into a RC injury animal model. Histological analysis was carried out on the isolated supra- and infraspinatus muscles to assess vorinostat anti-muscle degeneration potential. Results Vorinostat, a HDACi compound, blocked the adipogenic transformation of muscle-associated FAPs in culture, promoting myogenic progression of the satellite cells. Furthermore, it protected muscle from degeneration after acute RC in mice in the earlier muscle degenerative stage after tenotomy. Conclusion The HDACi vorinostat may be a candidate to prevent early muscular degeneration after RC injury.
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Affiliation(s)
- Lara Gil-Melgosa
- Orthopedic Surgery Department of Clínica Universidad de Navarra (CUN) and Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Rafael Llombart-Blanco
- Orthopedic Surgery Department of Clínica Universidad de Navarra (CUN) and Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Leire Extramiana
- Technological Innovation Division, Foundation for Applied Medical Research (FIMA), University of Navarra (UNAV) and IdiSNA, Pamplona, Spain
| | | | - Gloria Abizanda
- Technological Innovation Division, Foundation for Applied Medical Research (FIMA), University of Navarra (UNAV) and IdiSNA, Pamplona, Spain
| | | | - Xabier Agirre
- Hemato-Oncology Program, FIMA-UNAV and IdiSNA, Pamplona, Spain
| | - Felipe Prósper
- Hemato-Oncology Program, FIMA-UNAV and IdiSNA, Pamplona, Spain
- Haematology Department, Clinica Universidad de Navarra, Pamplona, Spain
- Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Madrid, Spain
| | | | - Juan Pons-Villanueva
- Orthopedic Surgery Department of Clínica Universidad de Navarra (CUN) and Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Ana Pérez-Ruiz
- Technological Innovation Division, Foundation for Applied Medical Research (FIMA), University of Navarra (UNAV) and IdiSNA, Pamplona, Spain
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Zhao M, Gao Z, Kuang C, Chen X. Partial root-zone drying combined with nitrogen treatments mitigates drought responses in rice. Front Plant Sci 2024; 15:1381491. [PMID: 38685964 PMCID: PMC11056961 DOI: 10.3389/fpls.2024.1381491] [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: 02/03/2024] [Accepted: 03/27/2024] [Indexed: 05/02/2024]
Abstract
Drought is a major stress affecting rice yields. Combining partial root-zone drying (PRD) and different nitrogen fertilizers reduces the damage caused by water stress in rice. However, the underlying molecular mechanisms remain unclear. In this study, we combined treatments with PRD and ammonia:nitrate nitrogen at 0:100 (PRD0:100) and 50:50 (PRD50:50) ratios or PEG and nitrate nitrogen at 0:100 (PEG0:100) ratios in rice. Physiological, transcriptomic, and metabolomic analyses were performed on rice leaves to identify key genes involved in water stress tolerance under different nitrogen forms and PRD pretreatments. Our results indicated that, in contrast to PRD0:100, PRD50:50 elevated the superoxide dismutase activity in leaves to accelerate the scavenging of ROS accumulated by osmotic stress, attenuated the degree of membrane lipid peroxidation, stabilized photosynthesis, and elevated the relative water content of leaves to alleviate the drought-induced osmotic stress. Moreover, the alleviation ability was better under PRD50:50 treatment than under PRD0:100. Integrated transcriptome and metabolome analyses of PRD0:100 vs PRD50:50 revealed that the differences in PRD involvement in water stress tolerance under different nitrogen pretreatments were mainly in photosynthesis, oxidative stress, nitrogen metabolism process, phytohormone signaling, and biosynthesis of other secondary metabolites. Some key genes may play an important role in these pathways, including OsGRX4, OsNDPK2, OsGS1;1, OsNR1.2, OsSUS7, and YGL8. Thus, the osmotic stress tolerance mediated by PRD and nitrogen cotreatment is influenced by different nitrogen forms. Our results provide new insights into osmotic stress tolerance mediated by PRD and nitrogen cotreatment, demonstrate the essential role of nitrogen morphology in PRD-induced molecular regulation, and identify genes that contribute to further improving stress tolerance in rice.
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Affiliation(s)
- Minhua Zhao
- Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in the Northern Region, College of Biology and Agriculture, Shaoguan College, Shaoguan, Guangdong, China
- Guangdong Engineering Technology Research Center for Efficient Utilization of Water and Soil Resources in North Region, College of Biology and Agriculture, Shaoguan College, Shaoguan, Guangdong, China
- School of Biology and Agriculture, College of Biology and Agriculture, Shaoguan College, Shaoguan University, Shaoguan, Guangdong, China
| | - Zhihong Gao
- Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in the Northern Region, College of Biology and Agriculture, Shaoguan College, Shaoguan, Guangdong, China
- Guangdong Engineering Technology Research Center for Efficient Utilization of Water and Soil Resources in North Region, College of Biology and Agriculture, Shaoguan College, Shaoguan, Guangdong, China
- School of Biology and Agriculture, College of Biology and Agriculture, Shaoguan College, Shaoguan University, Shaoguan, Guangdong, China
| | - Chunyi Kuang
- Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in the Northern Region, College of Biology and Agriculture, Shaoguan College, Shaoguan, Guangdong, China
- Guangdong Engineering Technology Research Center for Efficient Utilization of Water and Soil Resources in North Region, College of Biology and Agriculture, Shaoguan College, Shaoguan, Guangdong, China
- School of Biology and Agriculture, College of Biology and Agriculture, Shaoguan College, Shaoguan University, Shaoguan, Guangdong, China
| | - Xiaoyuan Chen
- Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in the Northern Region, College of Biology and Agriculture, Shaoguan College, Shaoguan, Guangdong, China
- Guangdong Engineering Technology Research Center for Efficient Utilization of Water and Soil Resources in North Region, College of Biology and Agriculture, Shaoguan College, Shaoguan, Guangdong, China
- School of Biology and Agriculture, College of Biology and Agriculture, Shaoguan College, Shaoguan University, Shaoguan, Guangdong, China
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Arunjaroensuk S, Nampuksa K, Monmaturapoj N, Thunyakitpisal P, Porntaveetus T, Mattheos N, Pimkhaokham A. Gene expression, micro-CT and histomorphometrical analysis of sinus floor augmentation with biphasic calcium phosphate and deproteinized bovine bone mineral: A randomized controlled clinical trial. Clin Implant Dent Relat Res 2024; 26:402-414. [PMID: 38317374 DOI: 10.1111/cid.13303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 11/08/2023] [Accepted: 01/04/2024] [Indexed: 02/07/2024]
Abstract
AIMS The aim of this randomized controlled clinical trial was to compare the gene expression, micro-CT, histomorphometrical analysis between biphasic calcium phosphate (BCP) of 70/30 ratio and deproteinized bovine bone mineral (DBBM) in sinus augmentation. MATERIALS AND METHODS Twenty-four patients in need for sinus floor augmentation through lateral approach were randomized into BCP 70/30 ratio or DBBM. After at least 6 months of healing, a total of 24 bone specimens were collected from the entire height of the augmented bone at the area of implant placement and underwent micro-CT, histomorphometric and gene expression analysis. The 12 bone specimens of BCP 70/30 ratio were equally allocated to micro-CT and histologic analysis (test group, n = 6) and gene expression analysis (test group, n = 6). Similarly, the 12 bone specimens of DBBM were also allocated to micro-CT and histologic analysis (control group, n = 6) and gene expression analysis (control group, n = 6). The newly formed bone, remaining graft materials and relative change in gene expression of four target genes were assessed. RESULTS The micro-CT results showed no statistically significant difference in the ratio of bone volume to total volume (BV/TV ratio) for the two groups (BCP 41.51% vs. DBBM 40.97%) and the same was true for residual graft material to total volume (GV/TV ratio, BCP 9.97% vs. DBBM 14.41%). Similarly, no significant difference was shown in the histological analysis in terms of bone formation, (BCP 31.43% vs. DBBM was 30.09%) and residual graft area (DBBM 40.76% vs. BCP 45.06%). With regards to gene expression, the level of ALP was lower in both groups of bone grafted specimens compared with the native bone. On the contrary, the level of OSX, IL-1B and TRAP was higher in augmented bone of both groups compared with the native bone. However, the relative difference in all gene expressions between BCP and DBBM group was not significant. CONCLUSIONS The BCP, HA/β-TCP ratio of 70/30 presented similar histological and micro-CT outcomes in terms of new bone formation and residual graft particles with DBBM. The gene expression analysis revealed different gene expression patterns between augmented and native bone, but showed no significant difference between the two biomaterials.
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Affiliation(s)
- Sirida Arunjaroensuk
- Dental Biomaterials Science Program, Graduate School, Chulalongkorn University, Bangkok, Thailand
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Oral and Maxillofacial Surgery and Digital Implant Surgery Research Unit, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Katanchalee Nampuksa
- Assistive Technology and Medical Devices Research Center (A-MED), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
| | - Naruporn Monmaturapoj
- Assistive Technology and Medical Devices Research Center (A-MED), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
| | | | - Thantrira Porntaveetus
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Nikos Mattheos
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Oral and Maxillofacial Surgery and Digital Implant Surgery Research Unit, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Department of Dental Medicine, Karolinska Institute, Stockholm, Sweden
| | - Atiphan Pimkhaokham
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Oral and Maxillofacial Surgery and Digital Implant Surgery Research Unit, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
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Stojanović M, Čolović MB, Lalatović J, Milosavljević A, Savić ND, Declerck K, Radosavljević B, Ćetković M, Kravić-Stevović T, Parac-Vogt TN, Krstić D. Monolacunary Wells-Dawson Polyoxometalate as a Novel Contrast Agent for Computed Tomography: A Comprehensive Study on In Vivo Toxicity and Biodistribution. Int J Mol Sci 2024; 25:2569. [PMID: 38473818 DOI: 10.3390/ijms25052569] [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: 02/01/2024] [Revised: 02/12/2024] [Accepted: 02/14/2024] [Indexed: 03/14/2024] Open
Abstract
Polyoxotungstate nanoclusters have recently emerged as promising contrast agents for computed tomography (CT). In order to evaluate their clinical potential, in this study, we evaluated the in vitro CT imaging properties, potential toxic effects in vivo, and tissue distribution of monolacunary Wells-Dawson polyoxometalate, α2-K10P2W17O61.20H2O (mono-WD POM). Mono-WD POM showed superior X-ray attenuation compared to other tungsten-containing nanoclusters (its parent WD-POM and Keggin POM) and the standard iodine-based contrast agent (iohexol). The calculated X-ray attenuation linear slope for mono-WD POM was significantly higher compared to parent WD-POM, Keggin POM, and iohexol (5.97 ± 0.14 vs. 4.84 ± 0.05, 4.55 ± 0.16, and 4.30 ± 0.09, respectively). Acute oral (maximum-administered dose (MAD) = 960 mg/kg) and intravenous administration (1/10, 1/5, and 1/3 MAD) of mono-WD POM did not induce unexpected changes in rats' general habits or mortality. Results of blood gas analysis, CO-oximetry status, and the levels of electrolytes, glucose, lactate, creatinine, and BUN demonstrated a dose-dependent tendency 14 days after intravenous administration of mono-WD POM. The most significant differences compared to the control were observed for 1/3 MAD, being approximately seventy times higher than the typically used dose (0.015 mmol W/kg) of tungsten-based contrast agents. The highest tungsten deposition was found in the kidney (1/3 MAD-0.67 ± 0.12; 1/5 MAD-0.59 ± 0.07; 1/10 MAD-0.54 ± 0.05), which corresponded to detected morphological irregularities, electrolyte imbalance, and increased BUN levels.
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Affiliation(s)
- Marko Stojanović
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Mirjana B Čolović
- "Vinča" Institute of Nuclear Sciences-National Institute of the Republic of Serbia, University of Belgrade, 11351 Belgrade, Serbia
| | - Jovana Lalatović
- Department of Radiology, University Hospital Medical Center Bežanijska Kosa, 11080 Belgrade, Serbia
| | - Aleksandra Milosavljević
- Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Nada D Savić
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Kilian Declerck
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Branimir Radosavljević
- Institute of Medical Chemistry, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Mila Ćetković
- Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Tamara Kravić-Stevović
- Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | | | - Danijela Krstić
- Institute of Medical Chemistry, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
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López-Guzmán C, García AM, Marín P, Vásquez AM. Assessment of the Integrity and Function of Human Term Placental Explants in Short-Term Culture. Methods Protoc 2024; 7:16. [PMID: 38392690 PMCID: PMC10892929 DOI: 10.3390/mps7010016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 12/15/2023] [Accepted: 12/22/2023] [Indexed: 02/24/2024] Open
Abstract
Human placental explants (HPEs) culture has generated significant interest as a valuable in vitro model for studying tissue functions in response to adverse conditions, such as fluctuations in oxygen levels, nutrient availability, exposure to pathogenic microorganisms, and toxic compounds. HPEs offers the advantage of replicating the intricate microenvironment and cell-to-cell communication involved in this critical and transient organ. Although HPEs culture conditions have been extensively discussed, a protocol for assessing the viability and function of HPEs during short-term culture has not been previously outlined. In this study, we have developed a short-term HPEs culture protocol, specifically up to 72 h, and have employed quantitative, semi-quantitative, and qualitative analyses to evaluate tissue viability and function over time. Under our standardized conditions, placental villi explants began to regain their structural properties (the integrity of the trophoblast and villous stroma) and the functionality of the HPEs (production of angiogenic, endocrine, and immunological factors) starting from 48 h of culture. This restoration ensures a suitable environment for several applications. The data presented here can be highly valuable for laboratories aiming to implement an HPEs model, whether in the process of standardization or seeking to enhance and optimize working conditions and timing with placental tissue.
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Affiliation(s)
- Carolina López-Guzmán
- Grupo Malaria, Calle 62 # 52-59 Torre 1 Laboratorio 610, Facultad de Medicina, Universidad de Antioquia, Medellín 050001, Colombia; (C.L.-G.); (A.M.G.); (P.M.)
| | - Ana María García
- Grupo Malaria, Calle 62 # 52-59 Torre 1 Laboratorio 610, Facultad de Medicina, Universidad de Antioquia, Medellín 050001, Colombia; (C.L.-G.); (A.M.G.); (P.M.)
| | - Paula Marín
- Grupo Malaria, Calle 62 # 52-59 Torre 1 Laboratorio 610, Facultad de Medicina, Universidad de Antioquia, Medellín 050001, Colombia; (C.L.-G.); (A.M.G.); (P.M.)
| | - Ana María Vásquez
- Grupo Malaria, Calle 62 # 52-59 Torre 1 Laboratorio 610, Facultad de Medicina, Universidad de Antioquia, Medellín 050001, Colombia; (C.L.-G.); (A.M.G.); (P.M.)
- Escuela de Microbiologia, Calle 67 # 53-108, Bloque 5, Oficina 5-135, Universidad de Antioquia, Medellín 050001, Colombia
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Alzoubi I, Zhang L, Zheng Y, Loh C, Wang X, Graeber MB. PathoGraph: An Attention-Based Graph Neural Network Capable of Prognostication Based on CD276 Labelling of Malignant Glioma Cells. Cancers (Basel) 2024; 16:750. [PMID: 38398141 PMCID: PMC10886785 DOI: 10.3390/cancers16040750] [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: 12/18/2023] [Revised: 02/07/2024] [Accepted: 02/08/2024] [Indexed: 02/25/2024] Open
Abstract
Computerized methods have been developed that allow quantitative morphological analyses of whole slide images (WSIs), e.g., of immunohistochemical stains. The latter are attractive because they can provide high-resolution data on the distribution of proteins in tissue. However, many immunohistochemical results are complex because the protein of interest occurs in multiple locations (in different cells and also extracellularly). We have recently established an artificial intelligence framework, PathoFusion which utilises a bifocal convolutional neural network (BCNN) model for detecting and counting arbitrarily definable morphological structures. We have now complemented this model by adding an attention-based graph neural network (abGCN) for the advanced analysis and automated interpretation of such data. Classical convolutional neural network (CNN) models suffer from limitations when handling global information. In contrast, our abGCN is capable of creating a graph representation of cellular detail from entire WSIs. This abGCN method combines attention learning with visualisation techniques that pinpoint the location of informative cells and highlight cell-cell interactions. We have analysed cellular labelling for CD276, a protein of great interest in cancer immunology and a potential marker of malignant glioma cells/putative glioma stem cells (GSCs). We are especially interested in the relationship between CD276 expression and prognosis. The graphs permit predicting individual patient survival on the basis of GSC community features. Our experiments lay a foundation for the use of the BCNN-abGCN tool chain in automated diagnostic prognostication using immunohistochemically labelled histological slides, but the method is essentially generic and potentially a widely usable tool in medical research and AI based healthcare applications.
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Affiliation(s)
- Islam Alzoubi
- School of Computer Science, The University of Sydney, J12/1 Cleveland St, Darlington, Sydney, NSW 2008, Australia; (I.A.); (L.Z.)
| | - Lin Zhang
- School of Computer Science, The University of Sydney, J12/1 Cleveland St, Darlington, Sydney, NSW 2008, Australia; (I.A.); (L.Z.)
| | - Yuqi Zheng
- Ken Parker Brain Tumour Research Laboratories, Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney, Camperdown, NSW 2050, Australia; (Y.Z.); (C.L.)
| | - Christina Loh
- Ken Parker Brain Tumour Research Laboratories, Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney, Camperdown, NSW 2050, Australia; (Y.Z.); (C.L.)
| | - Xiuying Wang
- School of Computer Science, The University of Sydney, J12/1 Cleveland St, Darlington, Sydney, NSW 2008, Australia; (I.A.); (L.Z.)
| | - Manuel B. Graeber
- Ken Parker Brain Tumour Research Laboratories, Brain and Mind Centre, Faculty of Medicine and Health, University of Sydney, Camperdown, NSW 2050, Australia; (Y.Z.); (C.L.)
- University of Sydney Association of Professors (USAP), University of Sydney, Sydney, NSW 2006, Australia
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Kawamoto H, Saito-Sasaki N, Sakuragi Y, Sawada Y. A Case Report of Mycosis Fungoides Presenting With Blister Formation. Cureus 2024; 16:e54213. [PMID: 38496187 PMCID: PMC10941054 DOI: 10.7759/cureus.54213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/14/2024] [Indexed: 03/19/2024] Open
Abstract
Mycosis fungoides (MF) is the most common primary cutaneous T-cell lymphoma with a usually indolent course. Early detection is crucial for effective intervention. We present a case of a 40-year-old male with MF exhibiting blistering as a rare precursor symptom. Despite initial treatment for eczema, the condition worsened over 10 months, leading to erythema, edema, and enlarged lymph nodes. Laboratory and imaging findings confirmed the diagnosis of MF. The patient responded partially to cyclophosphamide/doxorubicin/prednisone in combination with brentuximab vedotin (A-CHP) therapy. This case highlights the significance of recognizing blistering as a prodromal symptom for early detection and management of MF.
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Affiliation(s)
- Hirofumi Kawamoto
- Dermatology, University of Occupational and Environmental Health, Kitakyushu, JPN
| | - Natsuko Saito-Sasaki
- Dermatology, University of Occupational and Environmental Health, Kitakyushu, JPN
| | - Yumiko Sakuragi
- Dermatology, University of Occupational and Environmental Health, Kitakyushu, JPN
| | - Yu Sawada
- Dermatology, University of Occupational and Environmental Health, Kitakyushu, JPN
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Zou X, Liu Q, Guan Q, Zhao M, Zhu X, Pan Y, Liu L, Gao Z. Muscle Fiber Characteristics and Transcriptome Analysis in Slow- and Fast-Growing Megalobrama amblycephala. Genes (Basel) 2024; 15:179. [PMID: 38397169 PMCID: PMC10888202 DOI: 10.3390/genes15020179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 01/25/2024] [Accepted: 01/26/2024] [Indexed: 02/25/2024] Open
Abstract
Growth is an important trait in aquaculture that is influenced by various factors, among which genetic regulation plays a crucial role. Megalobrama amblycephala, one of the most important freshwater species in China, exhibits wide variations in body mass among individuals of the same age within the same pool. But the molecular mechanisms underlying wide variation in body mass remain unclear. Here, we performed muscle histological and transcriptome analysis of muscle tissues from Fast-Growing (FG) and Slow-Growing (SG) M. amblycephala at the age of 4 months old (4 mo) and 10 months old (10 mo) to elucidate its muscle development and growth mechanism. The muscle histological analysis showed smaller diameter and higher total number of muscle fibers in FG compared to SG at 4 mo, while larger diameter and total number of muscle fibers were detected in FG at 10 mo. The transcriptome analysis of muscle tissue detected 1171 differentially expressed genes (DEGs) between FG and SG at 4 mo, and 718 DEGs between FG and SG at 10 mo. Furthermore, 44 DEGs were consistently up-regulated in FG at both 4 mo and 10 mo. Up-regulated DEGs in FG at 4 mo were mainly enriched in the pathways related to cell proliferation, while down-regulated DEGs were significantly enriched in cell fusion and muscle contraction. Up-regulated DEGs in FG at 10 mo were mainly enriched in the pathways related to cell proliferation and protein synthesis. Therefore, these results provide novel insights into the molecular mechanism of M. amblycephala muscle growth at different stages, and will be of great guiding significance to promote the fast growth of M. amblycephala.
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Affiliation(s)
- Xue Zou
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (X.Z.); (Q.L.); (Q.G.); (M.Z.); (Z.G.)
| | - Qi Liu
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (X.Z.); (Q.L.); (Q.G.); (M.Z.); (Z.G.)
| | - Qianqian Guan
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (X.Z.); (Q.L.); (Q.G.); (M.Z.); (Z.G.)
| | - Ming Zhao
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (X.Z.); (Q.L.); (Q.G.); (M.Z.); (Z.G.)
| | - Xin Zhu
- Department of Bioengineering and Environmental Science, Changsha University, Changsha 410003, China; (X.Z.)
| | - Yaxiong Pan
- Department of Bioengineering and Environmental Science, Changsha University, Changsha 410003, China; (X.Z.)
| | - Lusha Liu
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (X.Z.); (Q.L.); (Q.G.); (M.Z.); (Z.G.)
| | - Zexia Gao
- Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (X.Z.); (Q.L.); (Q.G.); (M.Z.); (Z.G.)
- Hubei Hongshan Laboratory, Wuhan 430070, China
- Engineering Technology Research Center for Fish Breeding and Culture in Hubei Province, Wuhan 430070, China
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10
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Hannon G, Bogdanska A, Keogh A, Finn SP, Gobbo OL, Prina-Mello A. Biodistribution and histological analysis of iron oxide-dextran nanoparticles in wistar rats. Nanotoxicology 2023; 17:562-580. [PMID: 37982374 DOI: 10.1080/17435390.2023.2276413] [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: 06/30/2023] [Accepted: 10/11/2023] [Indexed: 11/21/2023]
Abstract
Iron oxide nanoparticles (IONP) are showing promise in many biomedical applications. One of these- magnetic hyperthermia- utilizes externally applied alternating magnetic fields and tumor-residing magnetic nanoparticles to generate localized therapeutic temperature elevations. Magnetic hyperthermia is approved in Europe to treat glioblastoma and is undergoing clinical assessment in the United States to treat prostate cancer. In this study, we performed biodistribution and histological analysis of a new IONP (RCL-01) in Wistar rats. These nanoparticles are currently undergoing clinical assessment in locally advanced pancreatic ductal adenocarcinoma to determine the feasibility of magnetic hyperthermia treatment in this disease. The study presented here aimed to determine the fate of these nanoparticles in vivo and whether this results in organ damage. Wistar rats were injected intravenously with relatively high doses of IONP (30 mgFe/kg, 45 mgFe/kg and 60 mgFe/kg) and compared to a vehicle control to determine the accumulation of iron in organs and whether this resulted in histological changes in these tissues. Dose-dependent increases of iron were observed in the liver, spleen and lungs of IONP-treated animals at 7 days postinjection; however, this did not result in significant histological changes in these tissues. Immunofluorescent imaging determined these nanoparticles are internalized by macrophages in tissue, suggesting they are readily phagocytosed by the reticuloendothelial system for eventual recycling. Notably, no changes in iron or dextran staining were found in the kidneys across all treatment groups, providing evidence for potential renal clearance.
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Affiliation(s)
- Gary Hannon
- Nanomedicine and Molecular Imaging Group, Trinity Translational Medicine Institute, Ireland
- Laboratory of Biological Characterization of Advanced Materials (LBCAM), Trinity Translational Medicine Institute, Trinity College Dublin, Ireland
| | - Anna Bogdanska
- Nanomedicine and Molecular Imaging Group, Trinity Translational Medicine Institute, Ireland
- Laboratory of Biological Characterization of Advanced Materials (LBCAM), Trinity Translational Medicine Institute, Trinity College Dublin, Ireland
| | - Anna Keogh
- Department of Histopathology, Trinity College Dublin, Ireland
| | - Stephen P Finn
- Department of Histopathology, Trinity College Dublin, Ireland
| | - Oliviero L Gobbo
- School of Pharmacy and Pharmaceutical Sciences, Ireland
- Trinity St James's Cancer Institute, Ireland
| | - Adriele Prina-Mello
- Nanomedicine and Molecular Imaging Group, Trinity Translational Medicine Institute, Ireland
- Laboratory of Biological Characterization of Advanced Materials (LBCAM), Trinity Translational Medicine Institute, Trinity College Dublin, Ireland
- Advanced Materials and Bioengineering Research (AMBER) Centre, CRANN Institute, Trinity College Dublin, Ireland
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11
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Burt KG, Viola DC, Lisiewski LE, Lombardi JM, Amorosa LF, Chahine NO. An in vivo model of ligamentum flavum hypertrophy from early-stage inflammation to fibrosis. JOR Spine 2023; 6:e1260. [PMID: 37780823 PMCID: PMC10540830 DOI: 10.1002/jsp2.1260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 03/10/2023] [Accepted: 04/25/2023] [Indexed: 10/03/2023] Open
Abstract
Multi-joint disease pathologies in the lumbar spine, including ligamentum flavum (LF) hypertrophy and intervertebral disc (IVD) bulging or herniation contribute to lumbar spinal stenosis (LSS), a highly prevalent condition characterized by symptomatic narrowing of the spinal canal. Clinical hypertrophic LF is characterized by a loss of elastic fibers and increase in collagen fibers, resulting in fibrotic thickening and scar formation. In this study, we created an injury model to test the hypothesis that LF needle scrape injury in the rat will result in hypertrophy of the LF characterized by altered tissue geometry, matrix organization, composition and inflammation. An initial pilot study was conducted to evaluate effect of needle size. Results indicate that LF needle scrape injury using a 22G needle produced upregulation of the pro-inflammatory cytokine Il6 at 1 week post injury, and increased expression of Ctgf and Tgfb1 at 8 weeks post injury, along with persistent presence of infiltrating macrophages at 1, 3, and 8 weeks post injury. LF integrity was also altered, evidenced by increases in LF tissue thickness and loss of elastic tissue by 8 weeks post injury. Persistent LF injury also produced multi-joint effects in the lumbar IVD, including disc height loss at the injury and adjacent to injury level, with degenerative IVD changes observed in the adjacent level. These results demonstrate that LF scrape injury in the rat produces structural and molecular features of LF hypertrophy and IVD height and histological changes, dependent on level. This model may be useful for testing of therapeutic interventions for treatment of LSS and IVD degeneration associated with LF hypertrophy.
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Affiliation(s)
- Kevin G. Burt
- Department of Orthopedic SurgeryColumbia UniversityNew YorkNew YorkUSA
- Department of Biomedical EngineeringColumbia UniversityNew YorkNew YorkUSA
| | - Dan C. Viola
- Department of Orthopedic SurgeryColumbia UniversityNew YorkNew YorkUSA
| | - Lauren E. Lisiewski
- Department of Orthopedic SurgeryColumbia UniversityNew YorkNew YorkUSA
- Department of Biomedical EngineeringColumbia UniversityNew YorkNew YorkUSA
| | | | | | - Nadeen O. Chahine
- Department of Orthopedic SurgeryColumbia UniversityNew YorkNew YorkUSA
- Department of Biomedical EngineeringColumbia UniversityNew YorkNew YorkUSA
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12
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Scandorieiro S, Kimura AH, de Camargo LC, Gonçalves MC, da Silva JVH, Risso WE, de Andrade FG, Zaia CTBV, Lonni AASG, Dos Reis Martinez CB, Durán N, Nakazato G, Kobayashi RKT. Hydrogel-Containing Biogenic Silver Nanoparticles: Antibacterial Action, Evaluation of Wound Healing, and Bioaccumulation in Wistar Rats. Microorganisms 2023; 11:1815. [PMID: 37512989 PMCID: PMC10383514 DOI: 10.3390/microorganisms11071815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 06/20/2023] [Accepted: 06/26/2023] [Indexed: 07/30/2023] Open
Abstract
Wound infections are feared complications due to their potential to increase healthcare costs and cause mortality since multidrug-resistant bacteria reduce treatment options. This study reports the development of a carbomer hydrogel containing biogenic silver nanoparticles (bioAgNPs) and its effectiveness in wound treatment. This hydrogel showed in vitro bactericidal activity after 2 h, according to the time-kill assay. It also reduced bacterial contamination in rat wounds without impairing their healing since the hydrogel hydrophilic groups provided hydration for the injured skin. The high number of inflammatory cells in the first days of the skin lesion and the greater degree of neovascularization one week after wound onset showed that the healing process occurred normally. Furthermore, the hydrogel-containing bioAgNPs did not cause toxic silver accumulation in the organs and blood of the rats. This study developed a bioAgNP hydrogel for the treatment of wounds; it has a potent antimicrobial action without interfering with cicatrization or causing silver bioaccumulation. This formulation is effective against bacteria that commonly cause wound infections, such as Pseudomonas aeruginosa and Staphylococcus aureus, and for which new antimicrobials are urgently needed, according to the World Health Organization's warning.
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Affiliation(s)
- Sara Scandorieiro
- Laboratory of Basic and Applied Bacteriology, Department of Microbiology, Center of Biological Sciences, State University of Londrina, Londrina 86057-970, Brazil
- Laboratory of Innovation and Cosmeceutical Technology, Department of Pharmaceutical Sciences, Center of Health Sciences, University Hospital of Londrina, Londrina 86038-350, Brazil
| | - Angela Hitomi Kimura
- Laboratory of Basic and Applied Bacteriology, Department of Microbiology, Center of Biological Sciences, State University of Londrina, Londrina 86057-970, Brazil
| | - Larissa Ciappina de Camargo
- Laboratory of Basic and Applied Bacteriology, Department of Microbiology, Center of Biological Sciences, State University of Londrina, Londrina 86057-970, Brazil
| | - Marcelly Chue Gonçalves
- Laboratory of Basic and Applied Bacteriology, Department of Microbiology, Center of Biological Sciences, State University of Londrina, Londrina 86057-970, Brazil
| | - João Vinícius Honório da Silva
- Laboratory of Histopathological Analysis, Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina 86057-970, Brazil
| | - Wagner Ezequiel Risso
- Laboratory of Animal Ecophysiology, Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina 86057-970, Brazil
| | - Fábio Goulart de Andrade
- Laboratory of Histopathological Analysis, Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina 86057-970, Brazil
| | - Cássia Thaïs Bussamra Vieira Zaia
- Laboratory of Neuroendocrine Physiology and Metabolism, Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina 86057-970, Brazil
| | - Audrey Alesandra Stinghen Garcia Lonni
- Laboratory of Innovation and Cosmeceutical Technology, Department of Pharmaceutical Sciences, Center of Health Sciences, University Hospital of Londrina, Londrina 86038-350, Brazil
| | - Claudia Bueno Dos Reis Martinez
- Laboratory of Animal Ecophysiology, Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina 86057-970, Brazil
| | - Nelson Durán
- Institute of Biology, State University of Campinas, Campinas 13083-862, Brazil
| | - Gerson Nakazato
- Laboratory of Basic and Applied Bacteriology, Department of Microbiology, Center of Biological Sciences, State University of Londrina, Londrina 86057-970, Brazil
| | - Renata Katsuko Takayama Kobayashi
- Laboratory of Basic and Applied Bacteriology, Department of Microbiology, Center of Biological Sciences, State University of Londrina, Londrina 86057-970, Brazil
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13
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Valchanov P, Dukov N, Pavlov S, Kontny A, Dikova T. 3D Printing, Histological, and Radiological Analysis of Nanosilicate-Polysaccharide Composite Hydrogel as a Tissue-Equivalent Material for Complex Biological Bone Phantom. Gels 2023; 9:547. [PMID: 37504427 PMCID: PMC10379613 DOI: 10.3390/gels9070547] [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: 05/30/2023] [Revised: 06/23/2023] [Accepted: 07/03/2023] [Indexed: 07/29/2023] Open
Abstract
Nanosilicate-polysaccharide composite hydrogels are a well-studied class of materials in regenerative medicine that combine good 3D printability, staining, and biological properties, making them an excellent candidate material for complex bone scaffolds. The aim of this study was to develop a hydrogel suitable for 3D printing that has biological and radiological properties similar to those of the natural bone and to develop protocols for their histological and radiological analysis. We synthesized a hydrogel based on alginate, methylcellulose, and laponite, then 3D printed it into a series of complex bioscaffolds. The scaffolds were scanned with CT and CBCT scanners and exported as DICOM datasets, then cut into histological slides and stained using standard histological protocols. From the DICOM datasets, the average value of the voxels in Hounsfield Units (HU) was calculated and compared with natural trabecular bone. In the histological sections, we tested the effect of standard histological stains on the hydrogel matrix in the context of future cytological and histological analysis. The results confirmed that an alginate/methylcellulose/laponite-based composite hydrogel can be used for 3D printing of complex high fidelity three-dimensional scaffolds. This opens an avenue for the development of dynamic biological physical phantoms for bone tissue engineering and the development of new CT-based imaging algorithms for the needs of radiology and radiation therapy.
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Affiliation(s)
- Petar Valchanov
- Depatment of Anatomy and Cell Biology, Medical University of Varna, 9002 Varna, Bulgaria
| | - Nikolay Dukov
- Department of Medical Equipment, Electronic and Information Technologies in Healthcare, Faculty of Public Health, Medical University of Varna, 9002 Varna, Bulgaria
| | - Stoyan Pavlov
- Depatment of Anatomy and Cell Biology, Medical University of Varna, 9002 Varna, Bulgaria
| | - Andreas Kontny
- Depatment of Anatomy and Cell Biology, Medical University of Varna, 9002 Varna, Bulgaria
| | - Tsanka Dikova
- Department of Dental Material Science and Prosthetic Dental Medicine, Medical University of Varna, 9002 Varna, Bulgaria
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14
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AlGeffari MA, Mansour D, Ahmed-Farid O, Mohamed Yousef E, Mohamed SA, Moustafa MMA, Barakat H, Abd El Ghany K. Lactiplantibacillus plantarum and Saussurea costus as Therapeutic Agents against a Diabetic Rat Model-Approaches to Investigate Pharmacophore Modeling of Human IkB Kinase and Molecular Interaction with Dehydrocostus Lactone of Saussurea costus. Metabolites 2023; 13:764. [PMID: 37367922 DOI: 10.3390/metabo13060764] [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: 05/16/2023] [Accepted: 06/09/2023] [Indexed: 06/28/2023] Open
Abstract
Lactic acid bacteria is well-known as a vital strategy to alleviate or prevent diabetes. Similarly, the plant Saussurea costus (Falc) Lipsch is a preventive power against diabetes. Here, we aimed to determine whether lactic acid bacteria or Saussurea costus is more effective in treating a diabetic rat model in a comparative study manner. An in vivo experiment was conducted to test the therapeutic activity of Lactiplantibacillus plantarum (MW719476.1) and S. costus plants against an alloxan-induced diabetic rat model. Molecular, biochemical, and histological analyses were investigated to evaluate the therapeutic characteristics of different treatments. The high dose of S. costus revealed the best downregulated expression for the IKBKB, IKBKG, NfkB1, IL-17A, IL-6, IL-17F, IL-1β, TNF-α, TRAF6, and MAPK genes compared to Lactiplantibacillus plantarum and the control groups. The downregulation of IKBKB by S. costus could be attributed to dehydrocostus lactone as an active compound with proposed antidiabetic activity. So, we performed another pharmacophore modeling analysis to test the possible interaction between human IkB kinase beta protein and dehydrocostus lactone as an antidiabetic drug. Molecular docking and MD simulation data confirmed the interaction between human IkB kinase beta protein and dehydrocostus lactone as a possible drug. The target genes are important in regulating type 2 diabetes mellitus signaling, lipid and atherosclerosis signaling, NF-κB signaling, and IL-17 signaling pathways. In conclusion, the S. costus plant could be a promising source of novel therapeutic agents for treating diabetes and its complications. Dehydrocostus lactone caused the ameliorative effect of S. costus by its interaction with human IkB kinase beta protein. Further, future studies could be conducted to find the clinical efficacy of dehydrocostus lactone.
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Affiliation(s)
- Metab A AlGeffari
- Department of Family and Community Medicine, College of Medicine, Qassim University, Buraydah 51452, Saudi Arabia
- Diabetes Center, Medical City, Qassim University, Buraydah 51452, Saudi Arabia
| | - Dina Mansour
- Pharmacology Department, Medical Research and Clinical Studies Institute, National Research Centre, Giza 12622, Egypt
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Galala University, Attaka, Suez 43511, Egypt
| | - Omar Ahmed-Farid
- Department of Physiology, Egyptian Drug Authority, EL-Manial, Cairo 11511, Egypt
| | - Einas Mohamed Yousef
- Department of Histology and Cell Biology, Faculty of Medicine, Menoufia University, Shibin el Kom 32511, Egypt
| | - Shereen A Mohamed
- Department of Genetics and Genetic Engineering, Faculty of Agriculture, Benha University, Moshtohor 13736, Egypt
| | - Mahmoud M A Moustafa
- Department of Genetics and Genetic Engineering, Faculty of Agriculture, Benha University, Moshtohor 13736, Egypt
| | - Hassan Barakat
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
- Food Technology Department, Faculty of Agriculture, Benha University, Moshtohor 13736, Egypt
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15
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Aloisi G, Goderecci R, Fidanza A, Cipolloni G, Calvisi V. Histological and clinical analysis of knee cyclops lesions. Acta Biomed 2023; 94:e2023125. [PMID: 37326276 PMCID: PMC10308458 DOI: 10.23750/abm.v94i3.13953] [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] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 03/13/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND AND AIM Cyclops Syndrome, first described by Jackson and Schaefer in 1990, is known as a complication of anterior cruciate ligament reconstruction (ACLR). However further researches have demonstrated that cyclops can be present even without symptoms and/or in absence of ACLR, simply configuring itself as a lesion in patients with rupture of the native ligament. METHODS This is a retrospective cohort study in which we report our experience of 13 cyclops lesions found between 126 patients during a primary arthroscopic ACLR. Preoperative examination with tests of joint stability and range of movement measurement was performed and recorded. Accurate joint examination was performed during arthroscopy and the cyclops lesions found were removed and analyzed with haematoxylin-eosin coloration. Post-operative clinical examination was performed until 6 months of follow-up. RESULTS Histological analysis showed proliferation of dense fibroelastic polypoid nodules with a macroscopically histological aspects of a "blue eye", hence the name Cyclops. At 6 months of follow-up after surgery, none of the patients reported pain at terminal extension or instability and they were all able to resume their previous activities. CONCLUSIONS Our study confirmed that surgical reconstruction of the ACL is not the only condition in which the Cyclops Syndrome develops; in fact our histological analysis indicate that the Cyclops lesions develop like a reactive fibroproliferative process following the rupture of the native ACL fibers, as scar reaction to the trauma: for this reason an accurate arthroscopic detection of these Cyclops lesions is crucial during primary ACL reconstruction in order to obtain the best surgical outcomes.
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Affiliation(s)
- Giuseppe Aloisi
- a:1:{s:5:"en_US";s:37:"Università degli studi dell'Aquila";}.
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16
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Mascoli A, Candelma M, Santojanni A, Carnevali O, Colella S. Reproductive Biology of Male European Hake ( Merluccius merluccius) in Central Mediterranean Sea: An Overview from Macroscopic to Molecular Investigation. Biology (Basel) 2023; 12:biology12040562. [PMID: 37106762 PMCID: PMC10136159 DOI: 10.3390/biology12040562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 03/23/2023] [Accepted: 04/05/2023] [Indexed: 04/29/2023]
Abstract
The improvement of scientific knowledge about overexploited fishery resources allow us to provide scientific advice for their management and stock protection. By using a multidisciplinary approach, the aim of the study was to characterize, for the first time in the Central Mediterranean Sea (GSA 17), the reproductive biology of males of M. merluccius, currently highly exploited. A multi-year sampling from January 2017 to December 2019 was performed to exhaustively evaluate the sex ratio of the stock, while the 2018 annual sampling was selected to investigate the reproductive pattern of males. Individuals in spawning conditions were found every month, proving that M. merluccius is an asynchronous species, reproducing all year round, with a seasonal reproductive peak in spring/summer, as indicated by GSI. Five gonadal development stages were defined to fully describe the reproductive cycle of males. The macroscopic and histological L50, respectively 18.6 cm and 15.4 cm, were both below the Minimum Conservation Reference Size (MCRS). According to the mRNA levels, fsh and lh played a significant role during spermiation, whereas the gnrhr2a was involved at the beginning of sexual maturity. In the testis, fshr and lhr reached maximum expression levels before the spermiation. The hormonal stimuli of 11-ketotestosterone and its receptor were significantly higher when the specimen was in reproductive activity.
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Affiliation(s)
- Alessia Mascoli
- Laboratory of Developmental and Reproductive Biology, DiSVA, Università Politecnica delle Marche, 60131 Ancona, Italy
| | - Michela Candelma
- Laboratory of Developmental and Reproductive Biology, DiSVA, Università Politecnica delle Marche, 60131 Ancona, Italy
| | - Alberto Santojanni
- National Research Council (CNR), Institute of Marine Biological Resources and Biotechnologies (IRBIM), 60125 Ancona, Italy
| | - Oliana Carnevali
- Laboratory of Developmental and Reproductive Biology, DiSVA, Università Politecnica delle Marche, 60131 Ancona, Italy
| | - Sabrina Colella
- National Research Council (CNR), Institute of Marine Biological Resources and Biotechnologies (IRBIM), 60125 Ancona, Italy
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17
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Yang F, Maimaitimin M, He Z, Zhang X, Huang H, Wang J. The Cartilage Protective Effect of Labrum Reconstruction Using Meniscus Allograft Compared with Labrum Resection in a Porcine Model. Cartilage 2023; 14:76-85. [PMID: 36484319 PMCID: PMC10076893 DOI: 10.1177/19476035221141419] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
PURPOSE This study aimed to verify the femoral head cartilage protective effect of labral reconstruction in a porcine model. METHODS Twelve pigs (24 hips) were divided into 3 groups: labrum defect group, lateral meniscus (LM) allograft group, and LM allograft wrapped with acellular peritoneum matrix (LM-APM) group before undergoing bilateral hip surgery. The pigs were sacrificed at 12 and 24 weeks postoperatively, while the femoral head cartilage was retrieved and then subjected to imaging measurement, macroscopic observations, and biomechanical and histological assessment. RESULTS Imaging measurement and macroscopic observations revealed that the defect area of the labrum was filled in LM and LM-APM allograft groups after 24 weeks, whereas the labrum defect remained at 24 weeks in the control group. The femoral head cartilage corresponding to the area of labral resection in the labral defect group had worse macroscopic Osteoarthritis Research Society International (OARSI) scores, uneven and discontinuous cartilage on hematoxylin and eosin (H&E) staining and Safranin O staining, decreased histopathology OARSI Osteoarthritis Cartilage Histopathology Assessment System (OOCHAS) scores, and decreased elastic modulus and hardness at 12 and 24 weeks after surgery compared with the meniscus allograft groups. CONCLUSION This study demonstrated that the LM allograft with or without APM for labral reconstruction had a chondroprotective effect on the femoral head in a porcine model.
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Affiliation(s)
- Fan Yang
- Beijing Key Laboratory of Sports Injuries, Department of Sports Medicine, Institute of Sports Medicine of Peking University, Peking University Third Hospital, Beijing, China
| | - Maihemuti Maimaitimin
- Beijing Key Laboratory of Sports Injuries, Department of Sports Medicine, Institute of Sports Medicine of Peking University, Peking University Third Hospital, Beijing, China
| | - Ziyi He
- Beijing Key Laboratory of Sports Injuries, Department of Sports Medicine, Institute of Sports Medicine of Peking University, Peking University Third Hospital, Beijing, China
| | - Xin Zhang
- Beijing Key Laboratory of Sports Injuries, Department of Sports Medicine, Institute of Sports Medicine of Peking University, Peking University Third Hospital, Beijing, China
| | - Hongjie Huang
- Beijing Key Laboratory of Sports Injuries, Department of Sports Medicine, Institute of Sports Medicine of Peking University, Peking University Third Hospital, Beijing, China
| | - Jianquan Wang
- Beijing Key Laboratory of Sports Injuries, Department of Sports Medicine, Institute of Sports Medicine of Peking University, Peking University Third Hospital, Beijing, China
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18
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Abstract
Atopic dermatitis (AD) is a multifactorial disease with underlying barrier disruption and altered microbial flora, resulting in dry skin and eczematous inflammation with persistent pruritis. Mouse models have been heavily used to investigate AD pathophysiology. Among various AD mouse models, AD-like inflammation induced by topical calcipotriol, a vitamin D3 analog referred to as MC903 in experimental settings, is a versatile model that can be applied to any strain of mice, which can be used for immunologic and morphologic studies. Herein, we provide basic protocols for the topical application of MC903 and approaches to assess phenotypes. After inducing AD-like inflammation, the skin is harvested for flow cytometry analysis, as well as for histologic and immunofluorescence microscopy analyses. The combination of these approaches enables accurate characterization of the degree of inflammation, type of inflammatory infiltrate, and localization of immune infiltrates. Published 2023. This article is a U.S. Government work and is in the public domain in the USA. Basic Protocol 1: Application of MC903 and gross phenotype assessment Basic Protocol 2: Processing skin for flow cytometry analysis Support Protocol: Skin immune cell surface staining and flow cytometry analysis Basic Protocol 3: Harvesting skin for histologic analysis Basic Protocol 4: Immunofluorescence staining to identify immune cell infiltrates.
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Affiliation(s)
- Keiko Sakamoto
- Cutaneous Leukocyte Biology Section, Dermatology Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Keisuke Nagao
- Cutaneous Leukocyte Biology Section, Dermatology Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health
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19
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Wang N, Gao Y, Ren H, He L, Zhao Y. Histological analysis for pulp mineralisation after severe intrusive luxation of immature molars in rats. Dent Traumatol 2023. [PMID: 36807827 DOI: 10.1111/edt.12831] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 02/10/2023] [Accepted: 02/12/2023] [Indexed: 02/20/2023]
Abstract
BACKGROUND/AIM Pulp mineralisation is a survival process that may occur in the pulp of immature teeth following trauma. However, the mechanism of this process remains unclear. The aim of this study was to evaluate the histological manifestations of pulp mineralisation after intrusion in immature molars of rats. MATERIALS AND METHODS Three-week-old male Sprague-Dawley rats were subjected to intrusive luxation of the right maxillary second molar by an impact force from a striking instrument through a metal force transfer rod. The left maxillary second molar of each rat was used as a control. The control and injured maxillae were collected at 3, 7, 10, 14, and 30 days after trauma (n = 15 per time group) and evaluated using haematoxylin and eosin staining and immunohistochemistry. Independent two-tailed Student's t-test was used for statistical comparison of the immunoreactive area. RESULTS Pulp atrophy and mineralisation were observed in 30%-40% of the animals, and no pulp necrosis occurred. Ten days after trauma, pulp mineralisation, with osteoid tissue rather than reparative dentin, formed around the newly vascularised areas in the coronal pulp. CD90-immunoreactive cells were observed in the sub-odontoblastic multicellular layer in control molars, whereas the number of these cells was decreased in the traumatised teeth. CD105 localised in cells around the pulp osteoid tissue of the traumatised teeth, whereas in control teeth, it was only expressed in the vascular endothelial cells of capillaries in the odontoblastic or sub-odontoblastic layers. In specimens with pulp atrophy at 3-10 days after trauma, hypoxia inducible factor expression and CD11b-immunoreactive inflammatory cells increased. CONCLUSIONS Following intrusive luxation of immature teeth without crown fractures in rats, no pulp necrosis occurred. Instead, pulp atrophy and osteogenesis around neovascularisation with activated CD105-immunoreactive cells were observed in the coronal pulp microenvironment characterised by hypoxia and inflammation.
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Affiliation(s)
- Nan Wang
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Peking University, Beijing, China
| | - Yike Gao
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Peking University, Beijing, China
| | - Huihui Ren
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Peking University, Beijing, China
| | - Linhai He
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China.,First Clinical Division, Peking University School and Hospital of Stomatology, Beijing, China
| | - Yuming Zhao
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Peking University, Beijing, China
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20
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Dagneaux L, Limberg AK, Owen AR, Bettencourt JW, Dudakovic A, Bayram B, Gades NM, Sanchez-Sotelo J, Berry DJ, van Wijnen A, Morrey ME, Abdel MP. Knee immobilization reproduces key arthrofibrotic phenotypes in mice. Bone Joint Res 2023; 12:58-71. [PMID: 36647696 PMCID: PMC9872038 DOI: 10.1302/2046-3758.121.bjr-2022-0250.r2] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
AIMS As has been shown in larger animal models, knee immobilization can lead to arthrofibrotic phenotypes. Our study included 168 C57BL/6J female mice, with 24 serving as controls, and 144 undergoing a knee procedure to induce a contracture without osteoarthritis (OA). METHODS Experimental knees were immobilized for either four weeks (72 mice) or eight weeks (72 mice), followed by a remobilization period of zero weeks (24 mice), two weeks (24 mice), or four weeks (24 mice) after suture removal. Half of the experimental knees also received an intra-articular injury. Biomechanical data were collected to measure passive extension angle (PEA). Histological data measuring area and thickness of posterior and anterior knee capsules were collected from knee sections. RESULTS Experimental knees immobilized for four weeks demonstrated mean PEAs of 141°, 72°, and 79° after zero, two, and four weeks of remobilization (n = 6 per group), respectively. Experimental knees demonstrated reduced PEAs after two weeks (p < 0.001) and four weeks (p < 0.0001) of remobilization compared to controls. Following eight weeks of immobilization, experimental knees exhibited mean PEAs of 82°, 73°, and 72° after zero, two, and four weeks of remobilization, respectively. Histological analysis demonstrated no cartilage degeneration. Similar trends in biomechanical and histological properties were observed when intra-articular violation was introduced. CONCLUSION This study established a novel mouse model of robust knee contracture without evidence of OA. This was appreciated consistently after eight weeks of immobilization and was irrespective of length of remobilization. As such, this arthrofibrotic model provides opportunities to investigate molecular pathways and therapeutic strategies.Cite this article: Bone Joint Res 2023;12(1):58-71.
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Affiliation(s)
- Louis Dagneaux
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Afton K. Limberg
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Aaron R. Owen
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Amel Dudakovic
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Banu Bayram
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Naomi M. Gades
- Department of Comparative Medicine, Mayo Clinic, Scottsdale, Arizona, USA
| | | | - Daniel J. Berry
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Andre van Wijnen
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA,Department of Biochemistry, University of Vermont, Burlington, Vermont, USA
| | - Mark E. Morrey
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Matthew P. Abdel
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA, Matthew P. Abdel. E-mail:
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21
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Salvi GE, Stähli A, Imber JC, Sculean A, Roccuzzo A. Physiopathology of peri-implant diseases. Clin Implant Dent Relat Res 2022. [PMID: 36515007 DOI: 10.1111/cid.13167] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [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: 10/20/2022] [Accepted: 11/29/2022] [Indexed: 12/15/2022]
Abstract
BACKGROUND Peri-implant health is characterized by the absence of clinical signs of soft tissue inflammation. Peri-implant diseases are initiated by the presence of bacterial biofilms and share a similar etiology as that involved in the onset of periodontal diseases. PURPOSE To summarize available evidence on the physiopathology of peri-implant diseases with emphasis on similarities and differences with periodontal diseases. MATERIALS AND METHODS Evidence on the biologic mechanisms involved in the pathogenesis of peri-implant mucositis and peri-implantitis were explored in the recent scientific literature. RESULTS Findings of studies in animals and in humans indicate that experimental peri-implant mucositis leads to a larger inflammatory connective tissue infiltrate and to a higher frequency of bleeding sites around implants compared with teeth. Tissue destruction at experimental peri-implantitis sites is more pronounced compared with that at experimental periodontitis sites. Although human periodontitis and peri-implantitis lesions share similarities with respect to etiology and clinical features, they represent distinct entities from a physiopathologic point of view. CONCLUSIONS Diagnosis of peri-implant health requires a clinical examination to confirm absence of peri-implant soft tissue inflammation. In order to make a correct diagnosis and select the appropriate therapeutic steps to manage peri-implant diseases, knowledge of their pathogenetic mechanisms is required.
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Affiliation(s)
- Giovanni E Salvi
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Alexandra Stähli
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Jean-Claude Imber
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Anton Sculean
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Andrea Roccuzzo
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
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22
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Salas-Singh C, Morales-Bojórquez E, Aguirre-Villaseñor H. Reproductive biology of the bullseye puffer Sphoeroides annulatus: Gonadosomatic index and its suitability for estimating length at maturity. J Fish Biol 2022; 101:1119-1133. [PMID: 35869632 DOI: 10.1111/jfb.15174] [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] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
This study aimed to describe updated information on the basic reproductive biology of Sphoeroides annulatus females and potential use of the gonadosomatic index I G as input data to assess length at 50% maturity ( L 50 ) and identify the breeding season. From April 2014 to December 2015, 767 females were analysed along the north-west coast of the Mexican Pacific Ocean. Both immature and mature females were represented in the total length ( L T ), which ranged from 81 to 440 mm, and the smallest mature female was 92 mm (new record for the species). Gonadal maturity phases were assigned through histological analysis. A I G threshold value I cut was established using the lower whisker value for maturity phase spawning capable (2.06%). The monthly variation of I G supported the annual spawning seasonality, and the presence of reproductively active mature females I G ≥ I cut coincided with the observed periods with histological data and the peaks for both seasons 2014 and 2015. Also the presence of reproductively inactive I G < I cut mature females confirmed the nonreproductive season observed from January to April 2015. Estimates of L 50 were based on the cumulative proportion of reproductively active mature females: both datasets showed a 'bumpy trajectory'. Considering the functional form of data and models, a second objective was to verify if each dataset presented a simple or double sigmoid trajectory and select the most suitable model through the Akaike information criterion. For both datasets, the best fitted model was the double sigmoidal M DS , while the single sigmoidal M SS had low performance and did not have statistical support. The M DS provided a L 50 value ca. 254 mm L T for both data sets. A trade-off between the model's correct fit and a reliable L 50 value was found, but this fact is not always considered when calculating the maturity, resulting in biased parameters. Correct data fitting may seem trivial, but the consequences for the conservation of immature individuals could be dramatic, affecting the population recruitment. In conclusion, the histologically calibrated I cut was suitable for classifying females of S. annulatus into reproductively inactive or active types, with an agreement percentage of 99%. The I cut = 2.06% can be useful for subsequent studies for this species.
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Affiliation(s)
- Carolina Salas-Singh
- Universidad Nacional Autónoma de México, Instituto de Ciencias del Mar y Limnología, Unidad Académica Mazatlán, Mazatlán, Mexico
| | - Enrique Morales-Bojórquez
- Centro de Investigaciones Biológicas del Noroeste SC. Av. Instituto Politécnico Nacional, La Paz, Mexico
| | - Hugo Aguirre-Villaseñor
- Instituto Nacional de Pesca y Acuacultura. Centro Regional de Investigación Acuícola y Pesquera-Mazatlán, Mazatlán, Mexico
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23
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Schanda JE, Heher P, Weigl M, Drechsler S, Schädl B, Prueller J, Kocijan R, Heuberer PR, Hackl M, Muschitz C, Grillari J, Redl H, Feichtinger X, Fialka C, Mittermayr R. Muscle-Specific Micro-Ribonucleic Acids miR-1-3p, miR-133a-3p, and miR-133b Reflect Muscle Regeneration After Single-Dose Zoledronic Acid Following Rotator Cuff Repair in a Rodent Chronic Defect Model. Am J Sports Med 2022; 50:3355-3367. [PMID: 36053026 DOI: 10.1177/03635465221119507] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Zoledronic acid improves bone microarchitecture and biomechanical properties after chronic rotator cuff repair (RCR) in rats. Besides the positive effects of zoledronic acid on bone mineral density and bone microarchitecture, bisphosphonates have positive effects on skeletal muscle function. PURPOSES/HYPOTHESIS The purposes of this study were to (1) longitudinally evaluate circulating bone- and muscle-specific serum micro-ribonucleic acids (miRNAs) and (2) investigate supraspinatus muscle tissue after tenotomy and delayed RCR in a rat model. It was hypothesized that zoledronic acid would improve muscle regeneration after chronic RCR in rats. STUDY DESIGN Controlled laboratory study. METHODS A total of 34 male Sprague-Dawley rats underwent unilateral (left) supraspinatus tenotomy (time point 1) with delayed transosseous RCR after 3 weeks (time point 2). All rats were sacrificed 8 weeks after RCR (time point 3). Animals were randomly assigned to 2 groups. One day after RCR, the control group was given 1 mL of subcutaneous saline solution, and the intervention group was treated with a subcutaneous single-dose of 100 µg/kg body weight of zoledronic acid. All 34 study animals underwent miRNA analysis at all 3 time points. In 4 animals of each group, histological analyses as well as gene expression analyses were conducted. RESULTS Circulating miRNAs showed significantly different expressions between both study groups. In the control group, a significant downregulation was observed for muscle-specific miR-1-3p (P = .004), miR-133a-3p (P < .001), and miR-133b (P < .001). Histological analyses showed significantly higher rates of regenerating myofibers on the operated side (left) of both study groups compared with the nonoperated side (right; P = .002). On the nonoperated side, significantly higher rates of regenerating myofibers were observed in the intervention group compared with the control group (P = .031). The myofiber cross-sectional area revealed significantly smaller myofibers on both sides within the intervention group compared with both sides of the control group (P < .001). Within the intervention group, significantly higher expression levels of muscle development/regeneration marker genes embryonal Myosin heavy chain (P = .017) and neonatal Myosin heavy chain (P = .016) were observed on the nonoperated side compared with the operated side. CONCLUSION An adjuvant single-dose of zoledronic acid after RCR in a chronic defect model in rats led to significant differences in bone- and muscle-specific miRNA levels. Therefore, miR-1-3p, miR-133a-3p, and miR-133b might be used as biomarkers for muscle regeneration after RCR. CLINICAL RELEVANCE Adjuvant treatment with zoledronic acid may improve muscle regeneration after chronic RCR in humans, thus counteracting fatty muscle infiltration and atrophy.
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Affiliation(s)
- Jakob E Schanda
- AUVA Trauma Center Vienna-Meidling, Department for Trauma Surgery, Vienna, Austria; Ludwig Boltzmann Institute for Traumatology - The Research Center in Cooperation with AUVA, Vienna, Austria; Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Philipp Heher
- Ludwig Boltzmann Institute for Traumatology - The Research Center in Cooperation with AUVA, Vienna, Austria; Austrian Cluster for Tissue Regeneration, Vienna, Austria; King's College London, Randall Centre for Cell and Molecular Biophysics, London, United Kingdom
| | - Moritz Weigl
- Ludwig Boltzmann Institute for Traumatology - The Research Center in Cooperation with AUVA, Vienna, Austria; Austrian Cluster for Tissue Regeneration, Vienna, Austria; TAmiRNA GmbH, Vienna, Austria
| | - Susanne Drechsler
- Ludwig Boltzmann Institute for Traumatology - The Research Center in Cooperation with AUVA, Vienna, Austria; Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Barbara Schädl
- Ludwig Boltzmann Institute for Traumatology - The Research Center in Cooperation with AUVA, Vienna, Austria; Austrian Cluster for Tissue Regeneration, Vienna, Austria; Medical University of Vienna, University Clinic of Dentistry, Vienna, Austria
| | - Johanna Prueller
- King's College London, Randall Centre for Cell and Molecular Biophysics, London, United Kingdom
| | - Roland Kocijan
- Hanusch Hospital Vienna, Medical Department I, Vienna, Austria; Ludwig Boltzmann Institute of Osteology at Hanusch Hospital of OEGK and AUVA Trauma Center Vienna-Meidling, Vienna, Austria; Sigmund Freud University Vienna, Faculty for Medicine, Metabolic Bone Diseases Unit, Vienna, Austria
| | | | | | - Christian Muschitz
- St. Vincent Hospital Vienna, Medical Department II, VINFORCE, Vienna, Austria
| | - Johannes Grillari
- Ludwig Boltzmann Institute for Traumatology - The Research Center in Cooperation with AUVA, Vienna, Austria; Austrian Cluster for Tissue Regeneration, Vienna, Austria; University of Natural Resources and Life Science [BOKU], Institute of Molecular Biotechnology, Vienna, Austria
| | - Heinz Redl
- Ludwig Boltzmann Institute for Traumatology - The Research Center in Cooperation with AUVA, Vienna, Austria; Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Xaver Feichtinger
- Ludwig Boltzmann Institute for Traumatology - The Research Center in Cooperation with AUVA, Vienna, Austria; Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Christian Fialka
- AUVA Trauma Center Vienna-Meidling, Department for Trauma Surgery, Vienna, Austria; Sigmund Freud University Vienna, Faculty for Medicine, Department for Traumatology, Vienna, Austria
| | - Rainer Mittermayr
- AUVA Trauma Center Vienna-Meidling, Department for Trauma Surgery, Vienna, Austria; Ludwig Boltzmann Institute for Traumatology - The Research Center in Cooperation with AUVA, Vienna, Austria; Austrian Cluster for Tissue Regeneration, Vienna, Austria.,Investigation performed at the Ludwig Boltzmann Institute for Traumatology - The Research Center in Cooperation with AUVA, Vienna, Austria
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24
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Szewczyk B, Tarasek M, Campwala Z, Trowbridge R, Zhao Z, Johansen PM, Olmsted Z, Bhushan C, Fiveland E, Ghoshal G, Heffter T, Tavakkolmoghaddam F, Bales C, Wang Y, Rajamani DK, Gandomi K, Nycz C, Jeannotte E, Mane S, Nalwalk J, Burdette EC, Fischer G, Yeo D, Qian J, Pilitsis J. What happens to brain outside the thermal ablation zones? An assessment of needle-based therapeutic ultrasound in survival swine. Int J Hyperthermia 2022; 39:1283-1293. [PMID: 36162814 DOI: 10.1080/02656736.2022.2126901] [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] [Indexed: 10/14/2022] Open
Abstract
BACKGROUND In stereotactic radiosurgery, isodose lines must be considered to determine how surrounding tissue is affected. In thermal ablative therapy, such as laser interstitial thermal therapy (LITT), transcranial MR-guided focused ultrasound (tcMRgFUS), and needle-based therapeutic ultrasound (NBTU), how the surrounding area is affected has not been well studied. OBJECTIVE We aimed to quantify the transition zone surrounding the ablation core created by magnetic resonance-guided robotically-assisted (MRgRA) delivery of NBTU using multi-slice volumetric 2-D magnetic resonance thermal imaging (MRTI) and subsequent characterization of the resultant tissue damage using histopathologic analysis. METHODS Four swine underwent MRgRA NBTU using varying duration and wattage for treatment delivery. Serial MRI images were obtained, and the most representative were overlaid with isodose lines and compared to brain tissue acquired postmortem which underwent histopathologic analysis. These results were also compared to predicted volumes using a finite element analysis model. Contralateral brain tissue was used for control data. RESULTS Intraoperative MRTI thermal isodose contours were characterized and comprehensively mapped to post-operative MRI images and qualitatively compared with histological tissue sections postmortem. NBTU 360° ablations induced smaller lesion volumes (33.19 mm3; 120 s, 3 W; 30.05 mm3, 180 s, 4 W) versus 180° ablations (77.20 mm3, 120 s, 3 W; 109.29 mm3; 180 s; 4 W). MRTI/MRI overlay demonstrated the lesion within the proximal isodose lines. The ablation-zone was characterized by dense macrophage infiltration and glial/neuronal loss as demonstrated by glial fibrillary acidic protein (GFAP) and neurofilament (NF) absence and avid CD163 staining. The transition-zone between lesion and normal brain demonstrated decreased macrophage infiltration and measured ∼345 microns (n - 3). We did not detect overt hemorrhages or signs of edema in the adjacent spared tissue. CONCLUSION We successfully performed MRgRA NBTU ablation in swine and demonstrated minimal histologic changes extended past the ablation-zone. The lesion was characterized by macrophage infiltration and glial/neuronal loss which decreased through the transition-zone.
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Affiliation(s)
- Benjamin Szewczyk
- Department of Neurosurgery, Albany Medical Center, Albany, NY, USA.,Robotics Engineering Department, Worcester Polytechnic Institute, Worcester, MA, USA
| | | | - Zahabiya Campwala
- Department of Neuroscience and Experimental Therapeutics, Albany Medical Center, Albany, NY, USA
| | - Rachel Trowbridge
- Department of Neuroscience and Experimental Therapeutics, Albany Medical Center, Albany, NY, USA
| | - Zhanyue Zhao
- Robotics Engineering Department, Worcester Polytechnic Institute, Worcester, MA, USA
| | - Phillip M Johansen
- Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL, USA
| | - Zachary Olmsted
- Department of Neuroscience and Experimental Therapeutics, Albany Medical Center, Albany, NY, USA
| | | | | | | | | | | | - Charles Bales
- Robotics Engineering Department, Worcester Polytechnic Institute, Worcester, MA, USA
| | - Yang Wang
- Robotics Engineering Department, Worcester Polytechnic Institute, Worcester, MA, USA
| | - Dhruv Kool Rajamani
- Robotics Engineering Department, Worcester Polytechnic Institute, Worcester, MA, USA
| | - Katie Gandomi
- Robotics Engineering Department, Worcester Polytechnic Institute, Worcester, MA, USA
| | - Christopher Nycz
- Robotics Engineering Department, Worcester Polytechnic Institute, Worcester, MA, USA
| | - Erin Jeannotte
- Animal Resources Facility, Albany Medical Center, Albany, NY, USA
| | - Shweta Mane
- Department of Neuroscience and Experimental Therapeutics, Albany Medical Center, Albany, NY, USA
| | - Julia Nalwalk
- Department of Neuroscience and Experimental Therapeutics, Albany Medical Center, Albany, NY, USA
| | | | - Gregory Fischer
- Robotics Engineering Department, Worcester Polytechnic Institute, Worcester, MA, USA
| | - Desmond Yeo
- GE Global Research Center, Niskayuna, NY, USA
| | - Jiang Qian
- Department of Neurosurgery, Albany Medical Center, Albany, NY, USA.,Department of Neuroscience and Experimental Therapeutics, Albany Medical Center, Albany, NY, USA
| | - Julie Pilitsis
- Department of Neurosurgery, Albany Medical Center, Albany, NY, USA.,Department of Neuroscience and Experimental Therapeutics, Albany Medical Center, Albany, NY, USA.,Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL, USA
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25
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Ben Taheur F, Mansour C, Mechri S, Laaouar H, Safta Skhiri S, Bouricha M, Jaouadi B, Mzoughi R, Zouari N. Protective effects of dietary Kefir against aflatoxin B1-induced hepatotoxicity in Nile tilapia fish, Oreochromis niloticus. Food Sci Nutr 2022; 10:2300-2311. [PMID: 35844919 PMCID: PMC9281925 DOI: 10.1002/fsn3.2838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 02/28/2022] [Accepted: 03/04/2022] [Indexed: 11/09/2022] Open
Abstract
The effect of dietary Kefir supplementation on the biometric, biochemical, and histological parameters of Nile tilapia (Oreochromis niloticus) exposed to aflatoxin B1 (AFB1, 200 µg/kg diet) contamination was studied. The yeasts were dominant in Kefir followed by lactic and acetic acid bacteria. The Kefir showed relatively interesting antioxidant potential in the DPPH• (IC50 = 0.9 ± 0.02 mg/ml) and ABTS•+ (IC50 = 2.2 ± 0.03 mg/ml) scavenging activities, Fe3+-reducing power (EC0.5 = 1.2 ± 0.01 mg/ml), and β-carotene bleaching assay (IC50 = 3.3 ± 0.02 mg/ml). Three hundred and sixty Nile tilapia weighing 23 ± 5 g were divided into four groups (30 fish/group with 3 replicates), and fed with diets containing Kefir (D2), AFB1 (D3), and Kefir+AFB1 (D4) for 4 weeks, whereas D1 was kept as control group where fish were fed with basal diet. The Kefir supplementation in D4 group significantly increased (p < .05) the percent weight gain as compared to D3 group. Moreover, Kefir improved the antioxidant enzymes in the liver, such as catalase (CAT), glutathione peroxidase (GPx), and superoxide dismutase (SOD) activities, that significantly increased (p < .05) by 2-, 3-, and 1.5-folds, respectively, as compared to D3 group. The Kefir treatment significantly decreased (p < .05) the liver malonaldehyde content by ~50% as compared to D3 group. Histopathological analysis revealed the hepatoprotective effects of Kefir by showing normal liver histological architecture in D4 group, as compared to degenerative changes observed in D3 group. These results suggest that Kefir could be considered as a potential probiotic in Nile tilapia feed to mitigate the AFB1 harmful effects.
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Affiliation(s)
- Fadia Ben Taheur
- Laboratory of Analysis, Treatment and Valorization of Environmental Pollutants and ProductsFaculty of PharmacyUniversity of MonastirMonastirTunisia
- Higher Institute of Applied Biology of Medenine (ISBAM)University of GabesMedenineTunisia
| | - Chalbia Mansour
- Laboratory of Analysis, Treatment and Valorization of Environmental Pollutants and ProductsFaculty of PharmacyUniversity of MonastirMonastirTunisia
| | - Sondes Mechri
- Higher Institute of Applied Biology of Medenine (ISBAM)University of GabesMedenineTunisia
- Laboratory of Microbial Biotechnology, Enzymatic and BiomoleculesCentre of Biotechnology of SfaxUniversity of SfaxSfaxTunisia
| | | | - Sihem Safta Skhiri
- ABCDF LaboratoryFaculty of Dental MedicineUniversity of MonastirMonastirTunisia
| | - Mohamed Bouricha
- Ministry of Agriculture, Hydraulic Resources and Fisheries. Agricultural Development CommissionershipGabesTunisia
| | - Bassem Jaouadi
- Laboratory of Microbial Biotechnology, Enzymatic and BiomoleculesCentre of Biotechnology of SfaxUniversity of SfaxSfaxTunisia
| | - Ridha Mzoughi
- Laboratory of Analysis, Treatment and Valorization of Environmental Pollutants and ProductsFaculty of PharmacyUniversity of MonastirMonastirTunisia
| | - Nacim Zouari
- Higher Institute of Applied Biology of Medenine (ISBAM)University of GabesMedenineTunisia
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26
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Minetti E, Corbella S, Taschieri S, Canullo L. Tooth as graft material: Histologic study. Clin Implant Dent Relat Res 2022; 24:488-496. [PMID: 35507503 PMCID: PMC9544007 DOI: 10.1111/cid.13097] [Citation(s) in RCA: 10] [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: 02/11/2022] [Revised: 04/12/2022] [Accepted: 04/20/2022] [Indexed: 12/22/2022]
Abstract
Background An effective regenerative protocol is key to reestablish and maintain the hard and soft tissue dimensions over time. The choice of the graft material and its properties also could have an impact on the results. To prevent alveolar ridge dimensional changes, since numerous graft materials have been suggested and in the past years, a growing interest in teeth material has been observed as a valuable alternative to synthetic biomaterials. Aim The aim of the study was to explore the histomorphometric outcomes of tooth derivative materials as used as bone substitute material in socket preservation procedure. Methods After alveolar socket preservation (ASP) procedures using autologous demineralized tooth as graft material prepared by means of an innovative device, was evaluated. A total of 101 histological samples, from 96 subjects, were analyzed by evaluating the total amount of bone (BV), residual tooth material (residual graft, TT), and vital bone (VB). The section from each sample was then split in nine subsections, resulting in 909 subsections, to allow statistical comparison between the different areas. Results It was not noticed a statistically significant difference between maxillary and mandibular sites, being the amount of VB in upper jaw sites 37.9 ± 21.9% and 38.0 ± 22.0% in lower jaw sites and the amount of TT was 7.7 ± 12.2% in maxilla and 7.0 ± 11.1% in mandibles. None of the other considered parameters, including defect type and section position, were statistically correlated to the results of the histomorphometric analysis. Conclusions ASP procedure using demineralized autologous tooth‐derived biomaterial may be a predictable procedure to produce new vital bone potentially capable to support dental implant rehabilitation.
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Affiliation(s)
- Elio Minetti
- Department of Biomedical, Surgical, and Dental Science, Università degli Studi di Milano, Milan
| | - Stefano Corbella
- Department of Biomedical, Surgical, and Dental Science, Università degli Studi di Milano, Milan.,IRCCS Istituto Ortopedico Galeazzi, Milan, Italy.,Department of Oral Surgery, Institute of Dentistry, I. M. Sechenov First Moscow State Medical University, Moscow, Russia
| | - Silvio Taschieri
- Department of Biomedical, Surgical, and Dental Science, Università degli Studi di Milano, Milan.,IRCCS Istituto Ortopedico Galeazzi, Milan, Italy.,Department of Oral Surgery, Institute of Dentistry, I. M. Sechenov First Moscow State Medical University, Moscow, Russia
| | - Luigi Canullo
- Department of Periodontics and Implantology, University Of Bern, Bern, Switzerland
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Enkling N, Marder M, Bayer S, Götz W, Stoilov M, Kraus D. Soft tissue response to different abutment materials: A controlled and randomized human study using an experimental model. Clin Oral Implants Res 2022; 33:667-679. [PMID: 35467040 DOI: 10.1111/clr.13932] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 02/01/2022] [Accepted: 04/12/2022] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Aim of this study was to compare the soft-tissue response to implant abutments made of titanium, zirconia, zirconia veneered with feldspar ceramics and PEEK by various clinical, histological, microbiological and molecular biological markers in an experimental model. MATERIALS AND METHODS 40 experimental one-piece healing abutments of four different materials were mounted on bone-level implants in 20 volunteering patients (split-mouth design). After a three months period of open healing, clinical parameters at the abutments were assessed and adjacent mucosa was sampled for inflammatory cytokine mRNA-concentrations and histological analysis by a novel method. In addition, PISF-samples were obtained for the analysis of periodonto-pathogenic bacteria counts and active MMP-8 levels. Marginal bone level change was measured by intra oral radiographs. RESULTS Abutments of the different materials did not exhibit significant differences regarding clinical parameters, pathogenic bacteria counts or pro-inflammatory cytokine concentrations. Likewise, no significant differences were detected regarding soft tissue morphology or bone level change. Compared to titanium abutments, significantly less mononuclear inflammatory cells were detected in the mucosa at abutments made of zirconia veneered with feldspar ceramics. CONCLUSIONS All examined abutment materials exhibited a similar soft tissue response compared to titanium and histological data did not reveal early signs of elevated inflammation caused by PEEK- and feldspar-veneered zirconia abutments. Due to the short observation period and the small sample size, a final conclusion on the long term suitability of those abutment materials cannot be drawn. However, based on the presented data, we consider further studies on that subject as appropriate.
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Affiliation(s)
- Norbert Enkling
- Department of Prosthodontics, Preclinical Education and Material Sciences, University of Bonn.,Department of Reconstructive Dentistry and Gerodontology, University of Bern
| | - Michael Marder
- Department of Prosthodontics, Preclinical Education and Material Sciences, University of Bonn
| | - Stefan Bayer
- Department of Prosthodontics, Preclinical Education and Material Sciences, University of Bonn
| | - Werner Götz
- Department of Orthodontics, University of Bonn
| | - Milan Stoilov
- Department of Prosthodontics, Preclinical Education and Material Sciences, University of Bonn
| | - Dominik Kraus
- Department of Prosthodontics, Preclinical Education and Material Sciences, University of Bonn
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28
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Li Y, De J, Jiang Q, Yang Y, Xu W, Du X, Zhao Y. Comparison of lipid metabolism between broodstock and hybrid offspring in the hepatopancreas of juvenile shrimp (Macrobrachium nipponense): Response to chronic ammonia stress. Anim Genet 2022; 53:393-404. [PMID: 35307863 DOI: 10.1111/age.13194] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 03/07/2022] [Accepted: 03/08/2022] [Indexed: 11/30/2022]
Abstract
Ammonia nitrogen is a major pollutant that causes great physiological harm to crustaceans in culture. In this study, we conducted a 28 day chronic ammonia nitrogen stress experiment with broodstock populations (Dianshan, DS) and hybrid offspring populations (DS ♀ × CD (Changjiang ♂ × Dongting ♀), SCD) exposed to 0, 1 and 10 mg/L of ammonia concentrations. A 28 day feeding trial and chronic ammonia nitrogen stress were used to investigate the effects on the growth performance, histological structure and lipid metabolism of juvenile shrimp, Macrobrachium nipponense. Our results indicated that survival rates in the SCD groups were significantly higher than those in the DS groups, whereas weight and length gain rates were not significantly different between the groups (p > 0.05). Histological structure results showed that the number of vacuoles in the DS group was significantly higher than that in the SCD group and hepatopancreas cell structures were disrupted in the ammonia treatment groups. The results of oil red staining showed that the number of lipid droplets increased significantly with the increase in ammonia concentration. As the ammonia concentration increased, fatty acid contents, lipid enzyme activities and lipid metabolism-related gene expression all tended to rise. In conclusion, ammonia nitrogen exposure caused damage to the hepatopancreas structure of juvenile shrimp and disturbed the lipid metabolism of the hepatopancreas. In addition, the SCD population had stronger stress resistance than the DS population when subjected to the same concentration of ammonia nitrogen stress.
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Affiliation(s)
- Yiming Li
- School of Life Science, East China Normal University, Shanghai, 200241, China
| | - Ji De
- School of Life Science, East China Normal University, Shanghai, 200241, China
| | - Qichen Jiang
- Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing, 210017, China
| | - Ying Yang
- School of Life Science, East China Normal University, Shanghai, 200241, China
| | - Wenyue Xu
- School of Life Science, East China Normal University, Shanghai, 200241, China
| | - Xinglin Du
- School of Life Science, East China Normal University, Shanghai, 200241, China
| | - Yunlong Zhao
- School of Life Science, East China Normal University, Shanghai, 200241, China.,State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200241, China
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29
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Ain QU, David M, Ijaz MU, Jahan S. Assessment of antiandrogenic and antispermatogenic activity of Hedera nepalensis in adult male rats. Andrologia 2021; 54:e14353. [PMID: 34931341 DOI: 10.1111/and.14353] [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: 08/16/2021] [Revised: 12/07/2021] [Accepted: 12/08/2021] [Indexed: 11/29/2022] Open
Abstract
The use of medicinal plants for fertility regulation has been prevalent worldwide for many centuries. They possess natural substances having antiandrogenic properties and can be used as source of contraception. In the current study, methanolic leaf extract of Hedera nepalensis was evaluated for antiandrogenic and antispermatogenic activity in adult male rats through various reproductive parameters. Experimental findings showed significantly increased oxidative stress with reduced antioxidant activity at highest dose regimens in both in vitro and in vivo studies. Increased ROS generation and lipid peroxidation lead to DNA damage in rat sperm. In vivo determination of sperm parameters exhibited notable reduction in sperm motility, viability and DSP in dose-treated animals. Histopathological observations revealed reduced epithelial height and wider lumen having less number of spermatozoa in high-dose-treated groups. Additionally, a marked decline noted in Testosterone concentration in all extract treated groups, while plasma LH and FSH levels only in high-dose-treated groups were noted. The findings of the current study conclude that methanolic leaf extract of H. nepalensis has the potential to disturb male fertility by generating oxidative stress and hormonal imbalance leading to histological alterations and sperm DNA damage.
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Affiliation(s)
- Qurat Ul Ain
- Department of Zoology, Government College Women University, Sialkot, Pakistan.,Reproductive Physiology Lab, Department of Animal Sciences, Quaid- i- Azam University, Islamabad, Pakistan
| | - Mehwish David
- Reproductive Physiology Lab, Department of Animal Sciences, Quaid- i- Azam University, Islamabad, Pakistan
| | - Muhammad Umar Ijaz
- Department of Zoology, Wildlife and Fisheries, University of Agriculture, Faisalabad, Pakistan
| | - Sarwat Jahan
- Reproductive Physiology Lab, Department of Animal Sciences, Quaid- i- Azam University, Islamabad, Pakistan
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Leonardi MS, Krmpotic C, Barbeito C, Soto F, Loza CM, Vera R, Negrete J. I've got you under my skin: inflammatory response to elephant seal's lice. Med Vet Entomol 2021; 35:658-662. [PMID: 34268793 DOI: 10.1111/mve.12538] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 05/24/2021] [Accepted: 06/16/2021] [Indexed: 06/13/2023]
Abstract
Seals (Phocidae) undergo an annual cycle of moulting that implies hair regeneration, and in the case of southern elephant seals, it also involves the superficial strata of the epidermis. Therefore, surviving the moulting period is crucial for their obligate and permanent ectoparasites. Throughout evolutionary time, sucking lice (Echinophtiriidae) have developed morphological, behavioural and ecological adaptations to cope with the amphibious lifestyle of their hosts. Lepidophthirus macrorhini, the Southern elephant seal louse species, faces the additional challenge of surviving attached to the host during the moulting period. Since lice live on the skin, L. macrorhini has developed a unique survival strategy by piercing the skin of their host, thus keeping them protected from moulting. During fieldwork in Patagonia and Antarctica, skin samples with lice within were collected for histological analysis to assess whether these parasites caused damage to the host. Lice generate an inflammatory process in the host's dermis, and these lesions could alter the normal chemical and mechanical protective properties of the skin facilitating secondary infections. Further studies that analyse the potential pathogens in those skin lesions are necessary to properly assess the real impact of ectoparasites on their host health.
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Affiliation(s)
- M S Leonardi
- Instituto de Biología de Organismos Marinos, CCT CONICET CENPAT, Puerto Madryn, Argentina
| | - C Krmpotic
- Laboratorio de Morfología Evolutiva y Desarrollo (MORPHOS) y División Paleontología Vertebrados, Museo de La Plata, Fac. Cs. Naturales y Museo, UNLP, La Plata, Argentina
- CONICET, Consejo Nacional de Investigaciones Científicas y Técnicas, Puerto Madryn, Argentina
| | - C Barbeito
- CONICET, Consejo Nacional de Investigaciones Científicas y Técnicas, Puerto Madryn, Argentina
- Histología y Embriología Descriptiva, Experimental y Comparada, Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, La Plata, Argentina
| | - F Soto
- Instituto de Biología de Organismos Marinos, CCT CONICET CENPAT, Puerto Madryn, Argentina
| | - C M Loza
- Laboratorio de Morfología Evolutiva y Desarrollo (MORPHOS) y División Paleontología Vertebrados, Museo de La Plata, Fac. Cs. Naturales y Museo, UNLP, La Plata, Argentina
- CONICET, Consejo Nacional de Investigaciones Científicas y Técnicas, Puerto Madryn, Argentina
| | - R Vera
- CCT CONICET CENPAT, Puerto Madryn, Argentina
| | - J Negrete
- Departamento de Biología de Predadores Tope, Instituto Antártico Argentino, Buenos Aires, Argentina
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Guerrero M, Romero I, Sandoval C, Gaibor-Pazmiño A, Noroña A, Zurita V, Del Sol M, Ottone NE. Axonal quantification of the white matter association fasciculi in cerebral hemispheres of cow (Bos taurus), pig (Sus scrofa domesticus) and rabbit (Oryctolagus cuniculus). Folia Morphol (Warsz) 2021; 81:874-883. [PMID: 34750803 DOI: 10.5603/fm.a2021.0116] [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: 07/22/2021] [Revised: 08/23/2021] [Accepted: 08/23/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND Cerebral white matter consists mainly of axons surrounded by myelin sheaths, which are grouped to form association, commissural, and projection fasciculi. The aim of our work was to quantify and compare under the microscope the axons of the white matter association fasciculi in the cerebral hemispheres of cow (Bos taurus), pig (Sus scrofa domesticus) and rabbit (Oryctolagus cuniculus) indirectly by identification of their myelin sheaths. MATERIALS AND METHODS The samples were taken from 30 cerebral hemispheres: 10 cow, 10 pig and 10 rabbit (15 right and 15 left). They were obtained following a protocol based on the Talairach-Tournoux coordinate system for human and primate brains. The slides were stained with Luxol Fast Blue, observed by optical microscopy, and photographed at 600×. Samples were also prepared for observation in scanning transmission electron microscopy with osmium tetroxide. The myelin sheaths/axons were counted with the ImageJ software. RESULTS Statistically significant differences in the number of myelin sheaths per 410 μm² were found in the inferior and superior longitudinal fasciculi between the left and right hemispheres of cows, with predominance of the right hemisphere; and in the inferior occipitofrontal fasciculus of the rabbit with predominance of the left hemisphere. CONCLUSIONS The use of animal models for experiments in the cerebral fasciculi, especially pig, could give us a greater understanding of the behaviour of demyelinating and neurodegenerative diseases in humans.
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Affiliation(s)
- M Guerrero
- Laboratory of Anatomy, Faculty of Medical Sciences, Universidad Central del Ecuador, Quito, Ecuador, Chile.,Doctoral Programme in Morphological Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
| | - I Romero
- Doctoral Programme in Morphological Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco, Chile.,Faculty of Health Sciences, Department of Diagnostic Processes and Evaluation, School of Nutrition, Universidad Católica de Temuco, Temuco, Chile
| | - C Sandoval
- Escuela de Tecnología Médica, Facultad de Salud, Universidad Santo Tomás, Los Carreras, Osorno, Chile.,Departamento de Ciencias Preclínicas, Facultad de Medicina, Universidad de La Frontera, Temuco, Chile
| | - A Gaibor-Pazmiño
- Laboratory of Anatomy, Faculty of Medical Sciences, Universidad Central del Ecuador, Quito, Ecuador, Chile
| | - A Noroña
- Laboratory of Anatomy, Faculty of Medical Sciences, Universidad Central del Ecuador, Quito, Ecuador, Chile
| | - V Zurita
- Laboratory of Anatomy, Faculty of Medical Sciences, Universidad Central del Ecuador, Quito, Ecuador, Chile
| | - M Del Sol
- Doctoral Programme in Morphological Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco, Chile.,Centre of Excellence in Morphological and Surgical Studies (CEMyQ), Universidad de La Frontera, Temuco, Chile
| | - N E Ottone
- Doctoral Programme in Morphological Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco, Chile. .,Centre of Excellence in Morphological and Surgical Studies (CEMyQ), Universidad de La Frontera, Temuco, Chile. .,Laboratory of Plastination and Anatomical Techniques, Research Centre in Dental Sciences (CICO), Faculty of Dentistry, Universidad de La Frontera, Temuco, Chile.
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Abstract
BACKGROUND Stroke is a leading cause of death and disability worldwide. Recently, secondary damage to the brain has been hypothesized as a key aggravating element in the ischemic cascade. However, the interaction between cerebral infarction and immune organs is not fully understood. In this study, we investigated changes in rat brain, spleen, thymus, mesenteric lymph node, and liver at 3, 7, and 13 days after transient middle cerebral artery occlusion (tMCAO) by immunohistochemistry. METHODS Rat models of stroke were made by tMCAO. Functional assessment was performed at 3 h and 1, 3, 5, 7, 9, 11, and 13 days after MCAO. Rat organs were harvested for 2,3,5-triphenyltetrazolium chloride staining and immunohistochemistry. RESULTS The number of CD8α+ T cells decreased in spleen, thymus, mesenteric lymph node, and liver and increased in brain. Numbers of Iba1+ and CD68+ macrophages decreased in spleen, thymus, and mesenteric lymph node and increased in brain and liver. Ki67+ cells exhibited the same characteristics as macrophages, and increased numbers of terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick end labeling (TUNEL) -positive apoptotic cells were present in spleen, mesenteric lymph node, liver, and brain. CONCLUSIONS The present results indicate that stroke is a systemic disease that, in addition to affecting the brain, also induces responses in immune organs. These results suggest that systemic treatment might be a good strategy for clinical stroke care.
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Affiliation(s)
- Chengbo Tan
- Department of Neurosurgery, Shanghai East Hospital, Tongji University School of Medicine.,Advanced Clinical Research Center, Fukushima Global Medical Science Center, Fukushima Medical University.,Department of Neurosurgery, Graduate School of Medicine, Hokkaido University
| | - Zifeng Wang
- Department of Neurosurgery, Graduate School of Medicine, Hokkaido University
| | - Miao Zheng
- Department of Dermatology, Graduate School of Medicine, Hokkaido University
| | - Songji Zhao
- Advanced Clinical Research Center, Fukushima Global Medical Science Center, Fukushima Medical University
| | - Hideo Shichinohe
- Department of Neurosurgery, Graduate School of Medicine, Hokkaido University.,Division of Clinical Research Administration, Hokkaido University Hospital
| | - Kiyohiro Houkin
- Department of Neurosurgery, Graduate School of Medicine, Hokkaido University
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Tresguerres FGF, Tresguerres IF, Iglesias O, Leco I, Tamimi F, Torres J. The role of cortical perforations in allogeneic block grafting for lateral augmentation in maxilla: A randomized clinical trial. Clin Implant Dent Relat Res 2021; 23:530-542. [PMID: 34107553 DOI: 10.1111/cid.12996] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 03/05/2021] [Accepted: 03/22/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND The need of decortication on the recipient site remains unclear for bone regeneration. To our knowledge, there are no human clinical trials that studied the influence of decortication on cancellous allogeneic block grafting. PURPOSE The aim of the present study is to evaluate the influence of perforating the cortex of the recipient site on cancellous allogeneic block graft integration and revascularization in the maxilla. MATERIAL AND METHODS Twenty-six patients referred for lateral bone augmentation were included in this clinical trial. Patients received freeze-dried bone allograft cancellous blocks obtained from the iliac crest; cortical perforations of the recipient bed were performed in the test group while in the control group it was left intact. After a 4-month healing period another surgery was performed to place dental implants, and a bone biopsy was collected using a trephine. All samples underwent micro-CT scans, and were processed for histomorphometric and immunohistochemical analysis. Implant survival comparisons were made using a repeated measures analysis of variance (ANOVA) while all other variables were compared using the analysis of covariance (ANCOVA). RESULTS One hundred and nineteen implants were placed into 110 augmented sites. One hundred percent implant survival rate was reported during 24 months follow-up period. No differences were reported in bleeding on probing at 1 (5.6 vs 9%) and 2 years (13.2 vs 12.1%), probing pocket depth at 1 (3.4 ± 0.95 vs 3.6 ± 1.12 mm) and 2 years (3.8 ± 1.02 vs 4.1 ± 1.46 mm), and marginal bone loss at 1 (0.2 ± 0.52 vs 0.3 ± 0.57 mm) and 2 years (0.6 ± 0.91 vs 0.5 ± 0.87 mm). No statistically significant differences were found in the micro-CT and histomorphometric analysis in terms of newly formed bone (25.7 ± 11.2% vs 22.3 ± 9.7%), soft tissue (33.0 ± 14.7% vs 36.5 ± 15.7%), remnant allograft (39.3 ± 20.4% vs 41.2 ± 22.7%), and bone mineralization (57.2 ± 10.6% vs 53.8 ± 8.7%). Perforating the cortex of the recipient site had no significant effect on angiogenesis as shown by immunohistochemical analysis of CD34 positive blood vessels (39.21 ± 10.53/mm2 vs 34.16 ± 12.67/mm2 ). CONCLUSION Cancellous allogeneic bone block grafts are a clinically acceptable alternative for horizontal bone augmentation. Cortical perforations of the recipient site in the maxilla did not improve angiogenesis nor bone formation within the block graft.
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Affiliation(s)
- Francisco G F Tresguerres
- Department of Dental Clinical Specialties, Faculty of Dentistry, Complutense University, Madrid, Spain
| | - Isabel F Tresguerres
- Department of Dental Clinical Specialties, Faculty of Dentistry, Complutense University, Madrid, Spain
| | - Oscar Iglesias
- Department of Dental Clinical Specialties, Faculty of Dentistry, Complutense University, Madrid, Spain
| | - Isabel Leco
- Department of Dental Clinical Specialties, Faculty of Dentistry, Complutense University, Madrid, Spain
| | - Faleh Tamimi
- Faculty of Dentistry, McGill University, Montreal, Quebec, Canada
| | - Jesús Torres
- Department of Dental Clinical Specialties, Faculty of Dentistry, Complutense University, Madrid, Spain
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Wortmann DE, Klein-Nulend J, van Ruijven LJ, Schortinghuis J, Vissink A, Raghoebar GM. Incorporation of anterior iliac crest or calvarial bone grafts in reconstructed atrophied maxillae: A randomized clinical trial with histomorphometric and micro-CT analyses. Clin Implant Dent Relat Res 2021; 23:492-502. [PMID: 34056848 PMCID: PMC8362136 DOI: 10.1111/cid.13012] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/15/2021] [Accepted: 04/29/2021] [Indexed: 12/16/2022]
Abstract
Background Autologous bone grafts have been applied successfully to severely atrophied maxilla via a preimplant procedure. Differences in graft incorporation at the microscopic level can be the decisive factor in the choice between anterior iliac crest and calvarial bone. Purpose To compare conversion of anterior iliac crest bone and calvarial bone 4 months after grafting of the edentulous maxilla. Materials and methods Twenty consecutive patients were randomly assigned to either anterior iliac crest (n = 10) or calvarial (n = 10) bone harvesting to reconstruct their atrophied maxillae. Biopsies were taken from both fresh bone grafts and reconstructed maxillae after 4 months healing, at time of implant placement. Micro‐CT, histomorphometric and histological analyses were performed. Results Micro‐CT analysis revealed that both the anterior iliac crest and calvarial bone grafts retained their volume and bone mass after being incorporated in the maxilla, but with a favor for calvarial bone grafts: calvarial bone grafts had a higher mineral density before and after incorporation. Both bone grafts types were well incorporated after 4 months of healing with preservation of bone volume and mineral density. Although the fresh bone biopsies were similar histomorphometrically, after 4 months of graft incorporation, the osteoid percentage and osteocyte count remained higher in the anterior iliac crest bone whereas the percentage of bone was higher in the calvarial bone grafts compared to the anterior iliac crest bone grafts. Conclusions Both donor sites, that is, anterior iliac crest and calvarial bone, are well suited to provide a reliable and stable basis for implant placement 4 months after grafting with mineral density, porosity, and resorption rate in favor of calvarial bone grafts.
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Affiliation(s)
- Dagmar E Wortmann
- Department of Oral and Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Jenneke Klein-Nulend
- Department of Oral Cell Biology, University of Amsterdam and Vrije Universiteit Amsterdam Academic Center for Dentistry Amsterdam, Amsterdam, The Netherlands
| | - Leo J van Ruijven
- Department of Functional Anatomy, University of Amsterdam and Vrije Universiteit Amsterdam Academic Center for Dentistry Amsterdam, Amsterdam, The Netherlands
| | - Jurjen Schortinghuis
- Department of Oral and Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Department of Oral and Maxillofacial Surgery, Treant Scheper Ziekenhuis Emmen, Emmen, The Netherlands
| | - Arjan Vissink
- Department of Oral and Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Gerry M Raghoebar
- Department of Oral and Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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Ito M, Toriumi T, Hiratsuka T, Imura H, Akiyama Y, Chimedtseren I, Arai Y, Yamaguchi K, Azuma A, Hata KI, Natsume N, Honda M. A Novel Bone Substitute Based on Recombinant Type I Collagen for Reconstruction of Alveolar Cleft. Materials (Basel) 2021; 14:2306. [PMID: 33946797 DOI: 10.3390/ma14092306] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 04/22/2021] [Accepted: 04/22/2021] [Indexed: 11/29/2022]
Abstract
This study aimed to examine the optimal cross-link density of recombinant peptide (RCP) particles, based on human collagen type I, for bone reconstruction in human alveolar cleft. Low- (group 1), medium- (group 2), and high- (group 3) cross-linked RCP particles were prepared by altering the duration of the heat-dependent dehydration reaction. Rat palatine fissures (n = 45), analogous to human congenital bone defects, were examined to evaluate the potential of bone formation by the three different RCP particles. Microcomputed tomography images were obtained to measure bone volume and bone mineral density at 4, 8, 12, and 16 weeks post grafting. Specimens were obtained for histological analysis at 16 weeks after grafting. Additionally, alkaline phosphatase and tartrate acid phosphatase staining were performed to visualize the presence of osteoblasts and osteoclasts. At 16 weeks, bone volume, bone mineral density, and new bone area measurements in group 2 were significantly higher than in any other group. In addition, the number of osteoblasts and osteoclasts on the new bone surface in group 2 was significantly higher than in any other group. Our results demonstrated that medium cross-linking was more suitable for bone formation—and could be useful in human alveolar cleft repairs as well.
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Mangano C, Giuliani A, De Tullio I, Raspanti M, Piattelli A, Iezzi G. Case Report: Histological and Histomorphometrical Results of a 3-D Printed Biphasic Calcium Phosphate Ceramic 7 Years After Insertion in a Human Maxillary Alveolar Ridge. Front Bioeng Biotechnol 2021; 9:614325. [PMID: 33937211 PMCID: PMC8082101 DOI: 10.3389/fbioe.2021.614325] [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: 10/05/2020] [Accepted: 03/08/2021] [Indexed: 02/04/2023] Open
Abstract
Introduction: Dental implant placement can be challenging when insufficient bone volume is present and bone augmentation procedures are indicated. The purpose was to assess clinically and histologically a specimen of 30%HA-60%β-TCP BCP 3D-printed scaffold, after 7-years. Case Description: The patient underwent bone regeneration of maxillary buccal plate with 3D-printed biphasic-HA block in 2013. After 7-years, a specimen of the regenerated bone was harvested and processed to perform microCT and histomorphometrical analyses. Results: The microarchitecture study performed by microCT in the test-biopsy showed that biomaterial volume decreased more than 23% and that newly-formed bone volume represented more than 57% of the overall mineralized tissue. Comparing with unloaded controls or peri-dental bone, Test-sample appeared much more mineralized and bulky. Histological evaluation showed complete integration of the scaffold and signs of particles degradation. The percentage of bone, biomaterials and soft tissues was, respectively, 59.2, 25.6, and 15.2%. Under polarized light microscopy, the biomaterial was surrounded by lamellar bone. These results indicate that, while unloaded jaws mimicked the typical osteoporotic microarchitecture after 1-year without loading, the BCP helped to preserve a correct microarchitecture after 7-years. Conclusions: BCP 3D-printed scaffolds represent a suitable solution for bone regeneration: they can lead to straightforward and less time-consuming surgery, and to bone preservation.
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Affiliation(s)
| | - Alessandra Giuliani
- Department of Clinical Sciences, Polytechnic University of Marche, Ancona, Italy
| | - Ilaria De Tullio
- Department of Medical, Oral and Biotechnological Sciences, University "G. D'Annunzio" of Chieti-Pescara, Chieti, Italy
| | - Mario Raspanti
- Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Adriano Piattelli
- Department of Medical, Oral and Biotechnological Sciences, University "G. D'Annunzio" of Chieti-Pescara, Chieti, Italy.,Chair of Biomaterials Engineering, Catholic University of San Antonio de Murcia (UCAM), Murcia, Spain.,Fondazione Villaserena per la Ricerca, Città Sant'Angelo, Italy
| | - Giovanna Iezzi
- Department of Medical, Oral and Biotechnological Sciences, University "G. D'Annunzio" of Chieti-Pescara, Chieti, Italy
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Rinaldi M, Santi S, Paciulli M, Ganino T, Pellegrini N, Visconti A, Vitaglione P, Barbanti D, Chiavaro E. Comparison of physical, microstructural and antioxidative properties of pumpkin cubes cooked by conventional, vacuum cooking and sous vide methods. J Sci Food Agric 2021; 101:2534-2541. [PMID: 33063346 DOI: 10.1002/jsfa.10880] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 09/23/2020] [Accepted: 10/15/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Current dietary guidelines recommend five or more fruit, vegetable, and legume servings per day. Often, these products are eaten cooked, resulting in organoleptic and nutritional changes. Vacuum cooking is gaining attention as an alternative cooking technique, due to its ability to preserve or even enhance sensory and healthy properties of food. Its household application is, however, poorly explored. In this work, the effect of vacuum cooking, performed with a new patented system, was studied for the first time on pumpkin cubes and compared to sous vide and traditional steam cooking, through a multidisciplinary approach. RESULTS All the cooking treatments damaged pumpkin microstructure, leading to cell separation and plasmolysis; vacuum cooking was the most aggressive method, as confirmed by texture softening. Vacuum cooking was also the method with less impact on pumpkin color, in relation to the largest extraction of some classes of carotenoids from the broken cells. Significant polyphenol extraction, especially of gallic acid and naringenin, was instead observed for sous vide and steamed pumpkins. The total antioxidant activity, ascribable to the effect of both carotenoids and polyphenols, resulted enhanced after cooking compared to raw one mainly for cook vide samples, followed by steamed and sous vide ones. CONCLUSIONS Vacuum cooking, followed by sous vide, has often shown better performance than traditional steam cooking for pumpkin cubes. The implementation of sous vide and vacuum cooking at domestic level or in professional kitchens, and in the food industry, would allow the consumption of vegetables with improved nutritional and sensorial characteristics. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Massimiliano Rinaldi
- Dipartimento di Scienze degli Alimenti e del Farmaco, Università degli Studi di Parma, Parma, Italy
| | - Saverio Santi
- Dipartimento di Scienze chimiche, Università degli Studi di Padova, Padova, Italy
| | - Maria Paciulli
- Dipartimento di Scienze degli Alimenti e del Farmaco, Università degli Studi di Parma, Parma, Italy
| | - Tommaso Ganino
- Dipartimento di Scienze degli Alimenti e del Farmaco, Università degli Studi di Parma, Parma, Italy
- Consiglio Nazionale delle Ricerche, Institute of BioEconomy (IBE), Florence, Italy
| | - Nicoletta Pellegrini
- Dipartimento di Scienze Agroalimentari, Ambientali e Animali, Università degli Studi di Udine, Udine, Italy
| | - Attilio Visconti
- Dipartimento di Agraria, Università degli Studi di Napoli Federico II, Naples, Italy
| | - Paola Vitaglione
- Dipartimento di Agraria, Università degli Studi di Napoli Federico II, Naples, Italy
| | - Davide Barbanti
- Dipartimento di Scienze degli Alimenti e del Farmaco, Università degli Studi di Parma, Parma, Italy
| | - Emma Chiavaro
- Dipartimento di Scienze degli Alimenti e del Farmaco, Università degli Studi di Parma, Parma, Italy
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Falco A, Bataccia F, Vittorini Orgeas L, Perfetti F, Basile M, Di Pietro R. A Clinical and Histological Study about the Socket Preservation in a Patient under Oral Bisphosphonates Treatment: A Case Report. Biology (Basel) 2021; 10:biology10040262. [PMID: 33806212 PMCID: PMC8067066 DOI: 10.3390/biology10040262] [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: 01/18/2021] [Revised: 03/18/2021] [Accepted: 03/19/2021] [Indexed: 02/05/2023]
Abstract
The aim of the present study is to assess the clinical and histological healing of a post-extractive alveolus following the procedure for socket preservation, in a patient receiving oral bisphosphonates for more than 6 years. After the extraction, enzymatically-deantigenated horse bone granules and an equine pericardium membrane were used to preserve the tooth socket. The patient was placed on a monthly follow-up in order to monitor the healing process. A 3 mm trephine bur was used to drill the bone for implant site preparation and to collect the bone sample. No signs and symptoms related to osteonecrosis of the jaws were reported. Histological data showed that, after 5 months, the mean percentages of trabecular bone, bone marrow and residual bone graft were respectively 45.74 ± 0.09%, 48.09 ± 0.08%, and 6.16 ± 0.01%. The residual graft material appeared to be osteointegrated and none of the particles appeared to be encapsulated. The present case report supports the guidelines that assume that patients undergoing oral bisphosphonate therapy can be eligible for surgical therapy. More clinical studies with larger sample sizes are needed to support this clinical evidence.
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Affiliation(s)
- Antonello Falco
- Falmed Medical Care, Viale G. d’Annunzio, 73, 65127 Pescara, Italy; (A.F.); (L.V.O.)
| | - Francesco Bataccia
- Department of Medical, Oral and Biotechnological Sciences, G. d’Annunzio University of Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy; (F.B.); (F.P.)
| | | | - Federico Perfetti
- Department of Medical, Oral and Biotechnological Sciences, G. d’Annunzio University of Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy; (F.B.); (F.P.)
| | - Mariangela Basile
- Department of Medicine and Ageing Sciences, G. d’Annunzio University of Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy;
- Correspondence:
| | - Roberta Di Pietro
- Department of Medicine and Ageing Sciences, G. d’Annunzio University of Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy;
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Katagiri H, El Tawil Y, Lang NP, Imber JC, Sculean A, Fujioka-Kobayashi M, Saulacic N. Collagen-Based Matrices for Osteoconduction: A Preclinical In Vivo Study. Biomedicines 2021; 9:biomedicines9020143. [PMID: 33540647 PMCID: PMC7913003 DOI: 10.3390/biomedicines9020143] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 01/27/2021] [Indexed: 11/20/2022] Open
Abstract
The aim of this study was to evaluate the influence of additional hydroxyapatite (HA) in collagen-based matrices (CM) and membrane placement on bone formation in calvarial defects. Critical size defects in the calvaria of 16 New Zealand White Rabbits were randomly treated with CM or mineralized collagen-based matrices (mCM). Half of the sites were covered with a collagen membrane. Animals were euthanized after 12 weeks of healing. The samples were studied by micro-CT and histology. Newly formed lamellar bone was observed in all samples at the periphery of the defect. In the central areas, however, new bone composed of both woven and lamellar bone was embedded in the soft tissue. Samples treated with mCM showed more residual biomaterial and induced more small bony islands in the central areas of the defects than samples with CM. Nevertheless, a complete defect closure was not observed in any of the samples at 12 weeks. Membrane placement resulted in a decrease in bone density and height. Significant differences between the groups were revealed only between CM groups with and without membrane coverage for bone height in the central area of the defect. Neither mineralization of CM nor membrane placement improved the osteogenic capacity in this particular defect. Nevertheless, mineralisation influenced bone density without a membrane placement and bone volume underneath a membrane. CM may be used as a scaffold in bone regeneration procedures, without the need of a membrane coverage. Further preclinical studies are warrant to optimise the potential of mCM.
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Affiliation(s)
- Hiroki Katagiri
- Department of Cranio-Maxillofacial Surgery, Inselspital, Bern University Hospital, Faculty of Medicine, University of Berne, CH-3010 Berne, Switzerland; (H.K.); (Y.E.T.); (N.P.L.); (M.F.-K.)
- Advanced Research Center, The Nippon Dental University School of Life Dentistry at Niigata, Niigata 951-8580, Japan
| | - Yacine El Tawil
- Department of Cranio-Maxillofacial Surgery, Inselspital, Bern University Hospital, Faculty of Medicine, University of Berne, CH-3010 Berne, Switzerland; (H.K.); (Y.E.T.); (N.P.L.); (M.F.-K.)
| | - Niklaus P. Lang
- Department of Cranio-Maxillofacial Surgery, Inselspital, Bern University Hospital, Faculty of Medicine, University of Berne, CH-3010 Berne, Switzerland; (H.K.); (Y.E.T.); (N.P.L.); (M.F.-K.)
| | - Jean-Claude Imber
- Department of Periodontology, School of Dental Medicine, University of Berne, CH-3010 Berne, Switzerland; (J.-C.I.); (A.S.)
| | - Anton Sculean
- Department of Periodontology, School of Dental Medicine, University of Berne, CH-3010 Berne, Switzerland; (J.-C.I.); (A.S.)
| | - Masako Fujioka-Kobayashi
- Department of Cranio-Maxillofacial Surgery, Inselspital, Bern University Hospital, Faculty of Medicine, University of Berne, CH-3010 Berne, Switzerland; (H.K.); (Y.E.T.); (N.P.L.); (M.F.-K.)
| | - Nikola Saulacic
- Department of Cranio-Maxillofacial Surgery, Inselspital, Bern University Hospital, Faculty of Medicine, University of Berne, CH-3010 Berne, Switzerland; (H.K.); (Y.E.T.); (N.P.L.); (M.F.-K.)
- Correspondence: ; Tel.: +41-31-632-8764
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Kraus D, Götz W, Bayer S, Frentzen M, Marder M, Albrecht D, Enkling N. Novel method to obtain human non-separated histological samples for the assessment of peri-implant soft tissue response: A feasibility study. Clin Oral Implants Res 2021; 32:401-409. [PMID: 33445211 DOI: 10.1111/clr.13710] [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: 07/07/2020] [Revised: 12/19/2020] [Accepted: 01/01/2021] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To introduce a standardized and less invasive clinical model that provides histological information on the abutment-mucosa interface in humans. MATERIALS AND METHODS New experimental healing abutments were left in an open healing position on bone-level implants in the interforaminal region of the mandibles in six edentulous patients. The one-piece abutments were hollow cylinder-shaped with two lateral openings that allow for ingrowth of the peri-implant mucosa into the central abutment cavity. After three months of healing, abutments and ingrown mucosa were sampled and processed for histological analysis in a non-separated resin-embedding technique. To test the validity of the new model, the ingrown tissue was compared to the peri-implant mucosa around the same samples. RESULTS None of the experimental abutments exhibited signs of failure, and all samples showed mucosal ingrowth to the inner-abutment cavity. Comparison of ingrown tissue and peri-implant mucosa revealed no significant differences regarding the traits: tissue morphology, quality of collagen fibers, and adherence to the abutment. Ingrown mucosa exhibited a tendency for higher leukocyte infiltration. CONCLUSIONS The presented model is a promising approach to reduce invasiveness during the sampling process for human non-separated abutment biopsies.
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Affiliation(s)
- Dominik Kraus
- Department of Prosthodontics, Preclinical Education and Material Sciences, University of Bonn, Bonn, Germany
| | - Werner Götz
- Department of Orthodontics, University of Bonn, Bonn, Germany
| | - Stefan Bayer
- Department of Prosthodontics, Preclinical Education and Material Sciences, University of Bonn, Bonn, Germany
| | - Matthias Frentzen
- Department of Periodontology, Operative and Preventive Dentistry, University of Bonn, Bonn, Germany
| | - Michael Marder
- Department of Prosthodontics, Preclinical Education and Material Sciences, University of Bonn, Bonn, Germany
| | | | - Norbert Enkling
- Department of Prosthodontics, Preclinical Education and Material Sciences, University of Bonn, Bonn, Germany.,Department of Reconstructive Dentistry and Gerodontology, University of Berne, Bern, Switzerland
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Vora D, Kincaid AE, Tolman J, Chauhan H. Characterization and Systemic Delivery of Dibenzoylmethane via the Intranasal Route. AAPS PharmSciTech 2021; 22:30. [PMID: 33404926 DOI: 10.1208/s12249-020-01904-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 12/10/2020] [Indexed: 01/21/2023] Open
Abstract
Intranasal (IN) administration is known to be noninvasive with the potential to carry a drug or vaccine directly to the blood, bypassing first-pass metabolism in the liver and the harsh environment of the gastrointestinal system. Orally administered dibenzoylmethane (DBM) has been shown experimentally to be neuroprotective in animal models of tauopathy and prion disease and effective in the treatment of certain forms of cancers. The purpose of this study was to prepare, characterize, and test formulations of DBM designed for IN administration. DBM was formulated in brain homogenate (BH) and hypromellose and as nanoparticles (NPs). These formulations were detected using UPLC and characterized in solid and suspension states; NPs were also characterized by in vitro cell culture-based studies. Particle size for DBM NP was 163.8 ± 3.2 nm, and in vitro release studies showed 95.80% of DBM was released from the NPs within 8 days. In vitro cell, culture studies suggested no drug uptake until 6 h. A histological analysis of nasal cavity (NC) sections and blood detection studies were carried out 30 min after inhalation. DBM amounting to 40.77 ± 4.93 and 44.45 ± 5.36 ng/mL was detected in the blood of animals administered DBM in polymeric and NP formulation, respectively. Histological studies on NCs confirmed the presence of BH within lymphatic vessels in the lamina propria of each animal; BH was identified traversing the mucosa in 2 animals. Thus, formulations for DBM administered via IN route were successfully designed and characterized and able to cross the nasal mucosa following inhalation.
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Fambrini M, Bernardi R, Pugliesi C. Ray flower initiation in the Helianthus radula inflorescence is influenced by a functional allele of the HrCYC2c gene. Genesis 2020; 58:e23401. [PMID: 33283401 DOI: 10.1002/dvg.23401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 10/09/2020] [Revised: 11/19/2020] [Accepted: 11/22/2020] [Indexed: 01/03/2023]
Abstract
The radiate pseudanthium, with actinomorphic disk flowers surrounded by showy marginal zygomorphic ray flowers, is the most common inflorescence in the Helianthus genus. In Helianthus radula, ray flower primordia are normally absent at the dorsal domain of the inner phyllaries (discoid heads) while the occurrence of radiate inflorescences is uncommon. In Helianthus spp., flower symmetry and inflorescence architecture are mainly controlled by CYCLOIDEA (CYC)-like genes but the putative role of these genes in the development of discoid inflorescences has not been investigate. Three CYC genes of H. radula with a role in ray flower identity (HrCYC2c, HrCYC2d, and HrCYC2e) were isolated. The phylogenetic analysis placed these genes within the CYC2 subclade. We identified two different alleles for the HrCYC2c gene. A mutant allele, designed HrCYC2c-m, shows a thymine to adenine transversion, which generates a TGA stop codon after a translation of 14 amino acids. We established homozygous dominant (HrCYC2c/HrCYC2c) and recessive (HrCYC2c-m/HrCYC2c-m) plants for this nonsense mutation. Inflorescences of both HrCYC2c/HrCYC2c and HrCYC2c/HrCYC2c-m plants initiated ray flowers, despite at low frequency. By contrast, plants homozygous for the mutant allele (HrCYC2c-m/HrCYC2c-m) failed at all to develop ray flowers. The results support, for the first time, a role of the HrCYC2c gene on the initiation of ray flower primordia. However, also in the two dominant phenotypes, discoid heads are the prevalent architecture suggesting that this gene is required but not sufficient to initiate ray flowers in pseudanthia. Other unknown major genes are most likely required in the shift from discoid to radiate inflorescence.
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Affiliation(s)
- Marco Fambrini
- Department of Agriculture, Food and Environment (DAFE), University of Pisa, Pisa, Italy
| | - Rodolfo Bernardi
- Department of Agriculture, Food and Environment (DAFE), University of Pisa, Pisa, Italy
| | - Claudio Pugliesi
- Department of Agriculture, Food and Environment (DAFE), University of Pisa, Pisa, Italy
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Abstract
BACKGROUND Plasma cell granuloma (PCG) is a rare benign pseudotumorous proliferation of unclear etiology that is mainly situated in the lungs. Gingival PCG is an even more peculiar lesion that usually occurs in middle-aged or elderly individuals and clinically manifests as a solitary entity. CASE REPORT A 15-year-old male with no underlying medical conditions presented with multiple gingival masses in the right maxilla, which were initially thought to be epulis. The lesions were resected completely and the excisional biopsies sent for histological examination. Immunohistochemical (IHC) stain revealed dense polyclonal plasma cell infiltration with positive expression of both kappa and lambda light chains, confirming a diagnosis of gingival PCG. Subsequently, the affected gingiva healed uneventfully, with no sign of recurrence over 2 years of follow-up. CONCLUSIONS The present report depicts an extremely unusual case of gingival PCG occurring in a juvenile with multiple lesions, which is worth attention in clinical pediatric dentistry. Excisional-biopsy and histological investigations are imperative for a confirmative diagnosis and to exclude potential aggressive conditions. Complete resection of lesions seems to be a valid treatment, while long-term clinical follow-up is still needed.
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Hino T, Furumatsu T, Miyazawa S, Fujii M, Kodama Y, Kamatsuki Y, Okazaki Y, Masuda S, Okazaki Y, Ozaki T. A histological study of the medial meniscus posterior root tibial insertion. Connect Tissue Res 2020; 61:546-553. [PMID: 31181971 DOI: 10.1080/03008207.2019.1631298] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Purpose/Aim of the study: Posterior root injury of the medial meniscus often leads to articular cartilage degeneration due to altered biomechanics. To avoid dysfunction, the attachment must be repaired using the transtibial pullout technique. To guide appropriate placement of the tibial tunnel, additional details on the normal anatomy of the meniscus insertion are needed. Therefore, we performed a histological analysis of a tibial bone slice with the medial meniscus posterior insertion obtained during total knee arthroplasty surgery. Materials and methods: Horizontal slices of the proximal tibia were obtained from 7 patients with osteoarthritis who underwent total knee arthroplasty. After decalcification, the region of the posterior horn was cut out and segmented into four pieces (2.0 mm thickness; medial to lateral). Sagittal sections were evaluated by safranin O staining or immunohistochemistry with anti-type collagen antibody. Results: Safranin O staining showed that the insertion of the posterior root consisted primarily of fibrocartilaginous layers in segment 2. Anatomically, segment 2 corresponded to the sagittal plane passing through the peak of the medial intercondylar tubercle. In this section, safranin O staining and immunohistochemistry revealed that the anterior one-third of the posterior root insertion was richer in proteoglycans and type II collagen than the central and posterior one-third. Conclusions: Anatomical insertion of the posterior root of the medial meniscus was located at the sagittal plane passing through the peak of the medial intercondylar tubercle. The structure of the medial meniscus posterior insertion was mainly localized in the anterior one-third.
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Affiliation(s)
- Tomohito Hino
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences , Okayama, Japan
| | - Takayuki Furumatsu
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences , Okayama, Japan
| | - Shinichi Miyazawa
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences , Okayama, Japan
| | - Masataka Fujii
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences , Okayama, Japan
| | - Yuya Kodama
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences , Okayama, Japan
| | - Yusuke Kamatsuki
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences , Okayama, Japan
| | - Yoshiki Okazaki
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences , Okayama, Japan
| | - Shin Masuda
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences , Okayama, Japan
| | - Yuki Okazaki
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences , Okayama, Japan
| | - Toshifumi Ozaki
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences , Okayama, Japan
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Wortmann DE, Klein-Nulend J, van Ruijven LJ, Vissink A, Raghoebar GM, Schortinghuis J. Histomorphometric and micro-CT analyses of calvarial bone grafts used to reconstruct the extremely atrophied maxilla. Clin Implant Dent Relat Res 2020; 22:593-601. [PMID: 32920912 PMCID: PMC7590101 DOI: 10.1111/cid.12936] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 06/08/2020] [Accepted: 06/19/2020] [Indexed: 11/27/2022]
Abstract
Background Calvarial bone grafts are successful in the reconstruction of the severely atrophied maxilla as a pre‐implant procedure. However, not much is known about graft incorporation at the microscopic level. Purpose This study aimed to assess calvarial bone conversion 4 months after being grafted in the edentulous maxillary bone. Materials and methods In 13 patients (age:65.3 ± 8.7 years) the atrophic maxilla was reconstructed with autologous calvarial bone. Biopsies were taken from fresh calvarial bone grafts and from the reconstructed maxillae after 4 months of healing. Micro‐CT, histomorphometric, and histological analysis were performed. From three patients biopsies were obtained after 9, 11, or 45 months. Results The micro‐CT analysis revealed that in the maxilla the calvarial bone was well preserved even after 45 months. Histology showed progressive incorporation of grafted bone within a maxillary bone. Osteoid and osteocytes were present in all biopsies indicating new bone formation and vital bone. Histomorphometrically, the percentage of grafted bone volume over total volume decreased from 79.8% (IQR78.7‐83.3) in fresh calvarial grafts to 59.3% (IQR44.8‐64.6) in healed grafts. The biopsies were taken after 9, 11, and 45 months showed similar values. Conclusions Calvarial bone grafts result in stable and viable bone, good incorporation into native maxillary bone, and a minor decrease in bone volume after healing. Consequently, they provide a solid base for implant placement in severely atrophied edentulous maxillary bone.
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Affiliation(s)
- Dagmar E Wortmann
- Department of Oral and Maxillofacial Surgery, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Jenneke Klein-Nulend
- Department of Oral Cell Biology, University of Amsterdam and Vrije Universiteit Amsterdam Academic Centre for Dentistry Amsterdam, Amsterdam, The Netherlands
| | - Leo J van Ruijven
- Department of Functional Anatomy, University of Amsterdam and Vrije Universiteit Amsterdam Academic Centre for Dentistry Amsterdam, Amsterdam, The Netherlands
| | - Arjan Vissink
- Department of Oral and Maxillofacial Surgery, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Gerry M Raghoebar
- Department of Oral and Maxillofacial Surgery, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Jurjen Schortinghuis
- Department of Oral and Maxillofacial Surgery, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands.,Department of Oral and Maxillofacial Surgery, Treant Scheper Ziekenhuis Emmen, Emmen, The Netherlands
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de Queiroz VT, Campos NC, Nunes ET, Costa AV, Coelho JD, Trivilin LO, de Melo DCA, Morais PAB, Martins IVF. 1,8-cineole and castor oil in sodium lauryl ether sulphate disrupt reproduction and ovarian tissue of Rhipicephalus (Boophilus) microplus. Med Vet Entomol 2020; 34:316-326. [PMID: 32250481 DOI: 10.1111/mve.12444] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 03/12/2020] [Accepted: 03/17/2020] [Indexed: 06/11/2023]
Abstract
Essential and fixed oils have been researched as alternatives to chemical acaricides. The activity of volatile compounds from essential oils (1,8-cineole, citral and eugenol) at 1.0% (w/v) and fixed oil (castor oil) at 0.3% (w/v) dissolved in 2.0% (v/v) dimethyl sulfoxide (DMSO) + 0.2% (w/v) Tween 80® was assessed against Rhipicephalus microplus using immersion tests. 1,8-cineole (29.0%) and castor oil (30.2%) had the highest reproductive inhibition rate. A second experiment was performed to verify the effect of the 1,8-cineole (10.0% w/v) and, or castor oil (0.3% w/v) on tick reproduction using different solubilizing agents. The highest reproductive inhibition was observed for the combination of 1,8-cineole/castor oil (94.1%) and 1,8-cineole in 2.0% (w/v) sodium lauryl ether sulphate (SLES) (92.8%). A third experiment showed morphological changes in R. microplus oocytes at different stages of development, as well as in pedicel cells. The most intense effects were observed when ticks were immersed in the formulation containing 1,8-cineole (10.0% w/v) and castor oil (0.3% w/v) dissolved in 2% (w/v) SLES. These findings highlight the potential of this formulation as an alternative for managing cattle ticks as their cytotoxic effects can reduce R. microplus reproductive success.
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Affiliation(s)
- V T de Queiroz
- Graduate Program in Veterinary Sciences, Federal University of Espírito Santo/UFES, Alto Universitário, Alegre, ES, Brazil
- Graduate Program in Agrochemistry, Federal University of Espírito Santo/UFES, Alto Universitário, Alegre, ES, Brazil
| | - N C Campos
- Graduate Program in Veterinary Sciences, Federal University of Espírito Santo/UFES, Alto Universitário, Alegre, ES, Brazil
| | - E T Nunes
- Department of Biology, Federal University of Espírito Santo/UFES, Alto Universitário, Alegre, ES, Brazil
| | - A V Costa
- Graduate Program in Agrochemistry, Federal University of Espírito Santo/UFES, Alto Universitário, Alegre, ES, Brazil
| | - J D Coelho
- Department of Veterinary Medicine, Federal University of Espírito Santo/UFES, Alto Universitário, Alegre, ES, Brazil
| | - L O Trivilin
- Graduate Program in Veterinary Sciences, Federal University of Espírito Santo/UFES, Alto Universitário, Alegre, ES, Brazil
| | - D C A de Melo
- Graduate Program in Agrochemistry, Federal University of Espírito Santo/UFES, Alto Universitário, Alegre, ES, Brazil
| | - P A B Morais
- Graduate Program in Agrochemistry, Federal University of Espírito Santo/UFES, Alto Universitário, Alegre, ES, Brazil
| | - I V F Martins
- Graduate Program in Veterinary Sciences, Federal University of Espírito Santo/UFES, Alto Universitário, Alegre, ES, Brazil
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Abstract
Many egg-laying reptiles possess temperature-dependent sex determination (TSD) in which outcome of gonadogenesis is determined by incubation temperature during a temperature-sensitive period of development. Prior studies on Malayemys macrocephala showed that incubation temperatures influence gonadal development and suggested that M. macrocephala exhibits TSD. However, information on the temperature-sensitivity period in this species was unknown until the current study. Turtle eggs were collected from rice fields in central Thailand from December 2016 to February 2017. In the laboratory, eggs were incubated at male-biased temperature (26 °C) and shifted to female-biased temperature (32 °C), or vice versa. Single shift experiments were performed systematically during embryonic stages 13-21. After hatching, sex of individual turtles was determined by histological analysis. We found that the sex determination of M. macrocephala is affected by temperature up to stage 16 of embryonic development.
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Affiliation(s)
- Rangsima Pewphong
- Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Jirarach Kitana
- Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.,BioSentinel Research Group (Special Task Force for Activating Research), Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Noppadon Kitana
- Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.,BioSentinel Research Group (Special Task Force for Activating Research), Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
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48
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Beck F, Reich KM, Lettner S, Heimel P, Tangl S, Redl H, Ulm C. The vertical course of bone regeneration in maxillary sinus floor augmentations: A histomorphometric analysis of human biopsies. J Periodontol 2020; 92:263-272. [PMID: 32715479 PMCID: PMC7984041 DOI: 10.1002/jper.19-0656] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 04/09/2020] [Accepted: 04/26/2020] [Indexed: 11/07/2022]
Abstract
Background Maxillary sinus floor augmentation (MSFA) is a well‐established and predictable augmentation method in severely resorbed maxillae. However, data on the vertical course of bone graft consolidation within the maxillary sinus are rare. The aim of the present study was to quantify the vertical distribution of new bone formation (nBF) in MSFA and to characterize the vertical gradient of bone graft consolidation. Methods Eighty‐five human sinus biopsies were harvested 6 ± 1 months after MSFA. Histological thin‐ground sections were prepared and histomorphometrically analyzed. The volume of newly formed bone (nBV/TV) was measured in serial zones of 100 μm proceeding from the bottom of the sinus floor (SF) up to the apical top of the biopsy. The gradient of nBV/TV within the augmentation area was determined by the vertical distribution of nBV/TV along these zones. Results In the premolar region, nBV/TV slightly declined from 20.4% in the zone adjacent to the SF to 17.7% at a distance of 8 mm. The gradient was steeper in the molar region: nBV/TV decreased from 18.7% to 12.8%. This decline was even more distinct when the volume fraction and the height of the residual bone of the SF were low. Conclusions nBF follows a gradient from native bone of the SF towards the apical part of the augmentation area. The distance to primordial bone thus plays a critical role for bone regeneration in MSFA, particularly in the molar region.
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Affiliation(s)
- Florian Beck
- Division of Oral SurgeryUniversity Clinic of Dentistry, Medical University of ViennaViennaAustria
| | - Karoline Maria Reich
- Karl Donath Laboratory for Hard Tissue and Biomaterial ResearchDivision of Oral SurgeryUniversity Clinic of Dentistry, Medical University of ViennaViennaAustria
- Austrian Cluster for Tissue RegenerationViennaAustria
| | - Stefan Lettner
- Karl Donath Laboratory for Hard Tissue and Biomaterial ResearchDivision of Oral SurgeryUniversity Clinic of Dentistry, Medical University of ViennaViennaAustria
- Austrian Cluster for Tissue RegenerationViennaAustria
| | - Patrick Heimel
- Karl Donath Laboratory for Hard Tissue and Biomaterial ResearchDivision of Oral SurgeryUniversity Clinic of Dentistry, Medical University of ViennaViennaAustria
- Austrian Cluster for Tissue RegenerationViennaAustria
| | - Stefan Tangl
- Karl Donath Laboratory for Hard Tissue and Biomaterial ResearchDivision of Oral SurgeryUniversity Clinic of Dentistry, Medical University of ViennaViennaAustria
- Austrian Cluster for Tissue RegenerationViennaAustria
| | - Heinz Redl
- Austrian Cluster for Tissue RegenerationViennaAustria
- Ludwig Boltzmann Institute for Experimental and Clinical TraumatologyAUVA Research CentreViennaAustria
| | - Christian Ulm
- Division of Oral SurgeryUniversity Clinic of Dentistry, Medical University of ViennaViennaAustria
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49
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Schanda JE, Keibl C, Heimel P, Monforte X, Tangl S, Feichtinger X, Teuschl AH, Baierl A, Muschitz C, Redl H, Fialka C, Mittermayr R. Zoledronic Acid Substantially Improves Bone Microarchitecture and Biomechanical Properties After Rotator Cuff Repair in a Rodent Chronic Defect Model. Am J Sports Med 2020; 48:2151-2160. [PMID: 32543880 DOI: 10.1177/0363546520926471] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Bone mineral density at the humeral head is reduced in patients with chronic rotator cuff tears. Bone loss in the humeral head is associated with repair failure after rotator cuff reconstruction. Bisphosphonates (eg, zoledronic acid) increase bone mineral density. HYPOTHESIS Zoledronic acid improves bone mineral density of the humeral head and biomechanical properties of the enthesis after reconstruction of chronic rotator cuff tears in rats. STUDY DESIGN Controlled laboratory study. METHODS A total of 32 male Sprague-Dawley rats underwent unilateral (left) supraspinatus tenotomy with delayed transosseous rotator cuff reconstruction after 3 weeks. All rats were sacrificed 8 weeks after rotator cuff repair. Animals were randomly assigned to 1 of 2 groups. At 1 day after rotator cuff reconstruction, the intervention group was treated with a single subcutaneous dose of zoledronic acid at 100 µg/kg bodyweight, and the control group received 1 mL of subcutaneous saline solution. In 12 animals of each group, micro-computed tomography scans of both shoulders were performed as well as biomechanical testing of the supraspinatus enthesis of both sides. In 4 animals of each group, histological analyses were conducted. RESULTS In the intervention group, bone volume fraction (bone volume/total volume [BV/TV]) of the operated side was higher at the lateral humeral head (P = .005) and the medial humeral head (P = .010) compared with the control group. Trabecular number on the operated side was higher at the lateral humeral head (P = .004) and the medial humeral head (P = .001) in the intervention group. Maximum load to failure rates on the operated side were higher in the intervention group (P < .001). Cortical thickness positively correlated with higher maximum load to failure rates in the intervention group (r = 0.69; P = .026). Histological assessment revealed increased bone formation in the intervention group. CONCLUSION Single-dose therapy of zoledronic acid provided an improvement of bone microarchitecture at the humeral head as well as an increase of maximum load to failure rates after transosseous reconstruction of chronic rotator cuff lesions in rats. CLINICAL RELEVANCE Zoledronic acid improves bone microarchitecture as well as biomechanical properties after reconstruction of chronic rotator cuff tears in rodents. These results need to be verified in clinical investigations.
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Affiliation(s)
- Jakob E Schanda
- AUVA Trauma Center Vienna-Meidling, Department for Trauma Surgery, Vienna, Austria.,Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Claudia Keibl
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Patrick Heimel
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria.,Medical University of Vienna, Department of Oral Surgery, Karl Donath Laboratory for Hard Tissue and Biomaterial Research, Vienna, Austria
| | - Xavier Monforte
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria.,University of Applied Sciences Technikum Wien, Department of Life Science Engineering, Vienna, Austria
| | - Stefan Tangl
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria.,Medical University of Vienna, Department of Oral Surgery, Karl Donath Laboratory for Hard Tissue and Biomaterial Research, Vienna, Austria
| | - Xaver Feichtinger
- AUVA Trauma Center Vienna-Meidling, Department for Trauma Surgery, Vienna, Austria.,Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Andreas H Teuschl
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria.,University of Applied Sciences Technikum Wien, Department of Life Science Engineering, Vienna, Austria
| | - Andreas Baierl
- University of Vienna, Department of Statistics and Operations Research, Vienna, Austria
| | - Christian Muschitz
- St Vincent Hospital Vienna, II. Medical Department, Metabolic Bone Disease Unit, Vienna, Austria
| | - Heinz Redl
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Christian Fialka
- AUVA Trauma Center Vienna-Meidling, Department for Trauma Surgery, Vienna, Austria.,Sigmund Freud University, Medical Faculty, Center for the Musculoskeletal System, Vienna, Austria
| | - Rainer Mittermayr
- AUVA Trauma Center Vienna-Meidling, Department for Trauma Surgery, Vienna, Austria.,Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
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50
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Atef M, Abdallah AM, Shawky M, Shaheen M, Khiry M, Sholkamy H. Two-stage distalization of the mental foramen to manage posterior mandibular vertical bone deficiency-a prospective observational study. Int J Oral Maxillofac Surg 2020; 49:1622-9. [PMID: 32402689 DOI: 10.1016/j.ijom.2020.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 02/24/2020] [Accepted: 04/13/2020] [Indexed: 11/21/2022]
Abstract
Inferior alveolar nerve (IAN) transpositioning is a modality utilized to manage posterior mandibular vertical deficiency. Several complications have been reported including improper implant positioning, mandibular body fracture, and neurosensory disturbance. The aim of this prospective observational study was to introduce a two-stage mental foramen distalization technique to minimize the complications associated with IAN transpositioning. Ten patients with severely atrophied mandibular ridges were included. Cone beam computed tomography was ordered to accurately locate the position of the IAN and its incisive terminal branch before designing the outline of two cortical osteotomies anterior and posterior to the mental foramen. The osteotomies were created using a piezoelectric device, followed by separation and identification of the nerve. The incisive branch was severed to freely transpose the IAN. A new foramen was created far distally and the cortical windows were repositioned and fixed with two screws. Healing was uneventful for all patients. Neurosensory recovery was assessed by MRC scale. All cases showed full recovery within 6 weeks, except for two patients who showed complete recovery after 16 weeks. Four months postoperative, all patients showed complete consolidation of the cortical windows without any signs of failure implants were placed at the pre-planned surgical sites. Histomorphometric analysis of core biopsies from seven surgical sites showed bone area percentages ranging from 46% to 63%. The two-stage mental foramen distalization technique is a predictable and safer technique for IAN transpositioning specifically in cases of vertical bone deficiency associated with limited inter-arch space.
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