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De Angelis F, Romboni M, Veltre V, Catalano P, Martínez-Labarga C, Gazzaniga V, Rickards O. First Glimpse into the Genomic Characterization of People from the Imperial Roman Community of Casal Bertone (Rome, First–Third Centuries AD). Genes (Basel) 2022; 13:genes13010136. [PMID: 35052476 PMCID: PMC8774527 DOI: 10.3390/genes13010136] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 01/04/2022] [Accepted: 01/08/2022] [Indexed: 02/01/2023] Open
Abstract
This paper aims to provide a first glimpse into the genomic characterization of individuals buried in Casal Bertone (Rome, first–third centuries AD) to gain preliminary insight into the genetic makeup of people who lived near a tannery workshop, fullonica. Therefore, we explored the genetic characteristics of individuals who were putatively recruited as fuller workers outside the Roman population. Moreover, we identified the microbial communities associated with humans to detect microbes associated with the unhealthy environment supposed for such a workshop. We examined five individuals from Casal Bertone for ancient DNA analysis through whole-genome sequencing via a shotgun approach. We conducted multiple investigations to unveil the genetic components featured in the samples studied and their associated microbial communities. We generated reliable whole-genome data for three samples surviving the quality controls. The individuals were descendants of people from North African and the Near East, two of the main foci for tannery and dyeing activity in the past. Our evaluation of the microbes associated with the skeletal samples showed microbes growing in soils with waste products used in the tannery process, indicating that people lived, died, and were buried around places where they worked. In that perspective, the results represent the first genomic characterization of fullers from the past. This analysis broadens our knowledge about the presence of multiple ancestries in Imperial Rome, marking a starting point for future data integration as part of interdisciplinary research on human mobility and the bio-cultural characteristics of people employed in dedicated workshops.
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Affiliation(s)
- Flavio De Angelis
- Centre of Molecular Anthropology for Ancient DNA Studies, Department of Biology, University of Rome Tor Vergata, 00133 Rome, Italy; (V.V.); (C.M.-L.); (O.R.)
- Correspondence: ; Tel.: +39-0672594350
| | - Marco Romboni
- Department of Biology, University of Pisa, 56121 Pisa, Italy;
| | - Virginia Veltre
- Centre of Molecular Anthropology for Ancient DNA Studies, Department of Biology, University of Rome Tor Vergata, 00133 Rome, Italy; (V.V.); (C.M.-L.); (O.R.)
- PhD Program in Evolutionary Biology and Ecology, Department of Biology, University of Rome Tor Vergata, 00133 Roma, Italy
| | - Paola Catalano
- Former Servizio di Antropologia, Soprintendenza Speciale Archeologia, Belle Arti e Paesaggio di Roma, 00185 Roma, Italy;
| | - Cristina Martínez-Labarga
- Centre of Molecular Anthropology for Ancient DNA Studies, Department of Biology, University of Rome Tor Vergata, 00133 Rome, Italy; (V.V.); (C.M.-L.); (O.R.)
| | - Valentina Gazzaniga
- Unità di Storia della Medicina e Bioetica, Sapienza University of Rome, 00185 Roma, Italy;
| | - Olga Rickards
- Centre of Molecular Anthropology for Ancient DNA Studies, Department of Biology, University of Rome Tor Vergata, 00133 Rome, Italy; (V.V.); (C.M.-L.); (O.R.)
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Xu L, Ye Q, Xie J, Yang J, Jiang W, Yuan H, Li J. An injectable gellan gum-based hydrogel that inhibits Staphylococcus aureus for infected bone defect repair. J Mater Chem B 2022; 10:282-292. [PMID: 34908091 DOI: 10.1039/d1tb02230j] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The treatment of infected bone defects in complex anatomical structures, such as oral and maxillofacial structures, remains an intractable clinical challenge. Therefore, advanced biomaterials that have excellent anti-infection activity and allow convenient delivery are needed. We fabricated an innovative injectable gellan gum (GG)-based hydrogel loaded with nanohydroxyapatite particles and chlorhexidine (nHA/CHX). The hydrogel has a porous morphology, suitable swelling ratio, and good biocompatibility. It exerts strong antibacterial activity against Staphylococcus aureus growth and biofilm formation in vitro. We successfully established an infected calvarial defect rat model. Bacterial colony numbers were significantly lower in tissues surrounding the bone in rats of the GG/nHA/CHX group after debride surgery and hydrogel implantation in the defect regions than in rats of the blank group. Rats in the GG/nHA/CHX group exhibited significantly increased new bone formation compared to those in the blank group at 4 and 8 weeks. These findings indicate that gellan gum-based hydrogel with nHA/CHX can accelerate the repair of infected bone defects.
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Affiliation(s)
- Laijun Xu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.
- Department of Operative Dentistry and Endodontics, Xiangya School of Stomatology, Xiangya Stomatological Hospital, Central South University, Changsha, 410008, China
| | - Qing Ye
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.
| | - Jing Xie
- College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, China
| | - Jiaojiao Yang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.
| | - Wentao Jiang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangdong Province Key Laboratory of Stomatology, Guangzhou, 510060, China
| | - He Yuan
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.
| | - Jiyao Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.
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Sides R, Griess-Fishheimer S, Zaretsky J, Shitrit A, Kalev-Altman R, Rozner R, Beresh O, Dumont M, Penn S, Shahar R, Monsonego-Ornan E. The Use of Mushrooms and Spirulina Algae as Supplements to Prevent Growth Inhibition in a Pre-Clinical Model for an Unbalanced Diet. Nutrients 2021; 13:nu13124316. [PMID: 34959867 PMCID: PMC8705242 DOI: 10.3390/nu13124316] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 11/26/2021] [Accepted: 11/27/2021] [Indexed: 12/13/2022] Open
Abstract
Today’s eating patterns are characterized by the consumption of unbalanced diets (UBDs) resulting in a variety of health consequences on the one hand, and the consumption of dietary supplements in order to achieve overall health and wellness on the other. Balanced nutrition is especially crucial during childhood and adolescence as these time periods are characterized by rapid growth and development of the skeleton. We show the harmful effect of UBD on longitudinal bone growth, trabecular and cortical bone micro-architecture and bone mineral density; which were analyzed by micro-CT scanning. Three point bending tests demonstrate the negative effect of the diet on the mechanical properties of the bone material as well. Addition of Spirulina algae or Pleurotus eryngii or Agaricus bisporus mushrooms, to the UBD, was able to improve growth and impaired properties of the bone. 16SrRNA Sequencing identified dysbiosis in the UBD rats’ microbiota, with high levels of pro-inflammatory associated bacteria and low levels of bacteria associated with fermentation processes and bone related mechanisms. These results provide insight into the connection between diet, the skeletal system and the gut microbiota, and reveal the positive impact of three chosen dietary supplements on bone development and quality presumably through the microbiome composition.
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Affiliation(s)
- Roni Sides
- Institute of Biochemistry and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel; (R.S.); (S.G.-F.); (J.Z.); (A.S.); (R.K.-A.); (R.R.); (O.B.); (S.P.)
| | - Shelley Griess-Fishheimer
- Institute of Biochemistry and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel; (R.S.); (S.G.-F.); (J.Z.); (A.S.); (R.K.-A.); (R.R.); (O.B.); (S.P.)
| | - Janna Zaretsky
- Institute of Biochemistry and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel; (R.S.); (S.G.-F.); (J.Z.); (A.S.); (R.K.-A.); (R.R.); (O.B.); (S.P.)
| | - Astar Shitrit
- Institute of Biochemistry and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel; (R.S.); (S.G.-F.); (J.Z.); (A.S.); (R.K.-A.); (R.R.); (O.B.); (S.P.)
| | - Rotem Kalev-Altman
- Institute of Biochemistry and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel; (R.S.); (S.G.-F.); (J.Z.); (A.S.); (R.K.-A.); (R.R.); (O.B.); (S.P.)
- Koret School of Veterinary, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel; (M.D.); (R.S.)
| | - Reut Rozner
- Institute of Biochemistry and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel; (R.S.); (S.G.-F.); (J.Z.); (A.S.); (R.K.-A.); (R.R.); (O.B.); (S.P.)
| | - Olga Beresh
- Institute of Biochemistry and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel; (R.S.); (S.G.-F.); (J.Z.); (A.S.); (R.K.-A.); (R.R.); (O.B.); (S.P.)
| | - Maïtena Dumont
- Koret School of Veterinary, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel; (M.D.); (R.S.)
| | - Svetlana Penn
- Institute of Biochemistry and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel; (R.S.); (S.G.-F.); (J.Z.); (A.S.); (R.K.-A.); (R.R.); (O.B.); (S.P.)
| | - Ron Shahar
- Koret School of Veterinary, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel; (M.D.); (R.S.)
| | - Efrat Monsonego-Ornan
- Institute of Biochemistry and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel; (R.S.); (S.G.-F.); (J.Z.); (A.S.); (R.K.-A.); (R.R.); (O.B.); (S.P.)
- Correspondence:
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Seely KD, Kotelko CA, Douglas H, Bealer B, Brooks AE. The Human Gut Microbiota: A Key Mediator of Osteoporosis and Osteogenesis. Int J Mol Sci 2021; 22:9452. [PMID: 34502371 PMCID: PMC8431678 DOI: 10.3390/ijms22179452] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/26/2021] [Accepted: 08/28/2021] [Indexed: 12/14/2022] Open
Abstract
An expanding body of research asserts that the gut microbiota has a role in bone metabolism and the pathogenesis of osteoporosis. This review considers the human gut microbiota composition and its role in osteoclastogenesis and the bone healing process, specifically in the case of osteoporosis. Although the natural physiologic processes of bone healing and the pathogenesis of osteoporosis and bone disease are now relatively well known, recent literature suggests that a healthy microbiome is tied to bone homeostasis. Nevertheless, the mechanism underlying this connection is still somewhat enigmatic. Based on the literature, a relationship between the microbiome, osteoblasts, osteoclasts, and receptor activator of nuclear factor-kappa-Β ligand (RANKL) is contemplated and explored in this review. Studies have proposed various mechanisms of gut microbiome interaction with osteoclastogenesis and bone health, including micro-RNA, insulin-like growth factor 1, and immune system mediation. However, alterations to the gut microbiome secondary to pharmaceutical and surgical interventions cannot be discounted and are discussed in the context of clinical therapeutic consideration. The literature on probiotics and their mechanisms of action is examined in the context of bone healing. The known and hypothesized interactions of common osteoporosis drugs and the human gut microbiome are examined. Since dysbiosis in the gut microbiota can function as a biomarker of bone metabolic activity, it may also be a pharmacological and nutraceutical (i.e., pre- and probiotics) therapeutic target to promote bone homeostasis.
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Affiliation(s)
- Kevin D. Seely
- College of Osteopathic Medicine, Rocky Vista University, Ivins, UT 84738, USA; (C.A.K.); (H.D.); (B.B.); (A.E.B.)
| | - Cody A. Kotelko
- College of Osteopathic Medicine, Rocky Vista University, Ivins, UT 84738, USA; (C.A.K.); (H.D.); (B.B.); (A.E.B.)
| | - Hannah Douglas
- College of Osteopathic Medicine, Rocky Vista University, Ivins, UT 84738, USA; (C.A.K.); (H.D.); (B.B.); (A.E.B.)
| | - Brandon Bealer
- College of Osteopathic Medicine, Rocky Vista University, Ivins, UT 84738, USA; (C.A.K.); (H.D.); (B.B.); (A.E.B.)
| | - Amanda E. Brooks
- College of Osteopathic Medicine, Rocky Vista University, Ivins, UT 84738, USA; (C.A.K.); (H.D.); (B.B.); (A.E.B.)
- Department of Research and Scholarly Activity, Rocky Vista University, Ivins, UT 84738, USA
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Amona FM, Denning DW, Moukassa D, Develoux M, Hennequin C. Histoplasmosis in the Republic of Congo dominated by African histoplasmosis, Histoplasma capsulatum var. duboisii. PLoS Negl Trop Dis 2021; 15:e0009318. [PMID: 33956817 PMCID: PMC8101734 DOI: 10.1371/journal.pntd.0009318] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
The Republic of Congo (RoC) is one of the African countries with the most histoplasmosis cases reported. This review summarizes the current status regarding epidemiology, diagnostic tools, and treatment of histoplasmosis in the RoC. A computerized search was performed from online databases Medline, PubMed, HINARI, and Google Scholar to collect literature on histoplasmosis in the RoC. We found 57 cases of histoplasmosis diagnosed between 1954 and 2019, corresponding to an incidence rate of 1-3 cases each year without significant impact of the AIDS epidemic in the country. Of the 57 cases, 54 (94.7%) were cases of Histoplasma capsulatum var. duboisii (Hcd) infection, African histoplasmosis. Three cases (5.3%) of Histoplasma capsulatum var. capsulatum infection were recorded, but all were acquired outside in the RoC. The patients' ages ranged between 13 months to 60 years. An equal number of cases were observed in adults in the third or fourth decades (n = 14; 24.6%) and in children aged ≤15 years. Skin lesions (46.3%), lymph nodes (37%), and bone lesions (26%) were the most frequent clinical presentations. Most diagnoses were based on histopathology and distinctive large yeast forms seen in tissue. Amphotericin B (AmB) was first line therapy in 65% of the cases and itraconazole (25%) for maintenance therapy. The occurrence of African histoplasmosis in apparently normal children raises the possibility that African histoplasmosis is linked to environmental fungal exposure.
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Affiliation(s)
- Fructueux Modeste Amona
- Faculty of Health Sciences, Marien Ngouabi University, Brazzaville, Republic of Congo
- Research Center and Study of Infectious and Tropical Pathologies, Oyo, Republic of Congo
- * E-mail:
| | - David W. Denning
- The University of Manchester and Manchester Academic Health Science Centre, Manchester, United Kingdom
| | - Donatien Moukassa
- Faculty of Health Sciences, Marien Ngouabi University, Brazzaville, Republic of Congo
- Research Center and Study of Infectious and Tropical Pathologies, Oyo, Republic of Congo
| | - Michel Develoux
- Assistance Publique-Hôpitaux de Paris, Hôpital St Antoine, Service de Parasitologie-Mycologie, Paris, France
| | - Christophe Hennequin
- Sorbonne Université, Inserm, Centre de Recherche Saint-Antoine, CRSA, AP-HP, Hôpital Saint-Antoine, Service de Parasitologie-Mycologie, Paris, France
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Zhang S, Vaida J, Parenti J, Lindsey BA, Xing M, Li B. Programmed Multidrug Delivery Based on Bio-Inspired Capsule-Integrated Nanocoatings for Infected Bone Defect Treatment. ACS Appl Mater Interfaces 2021; 13:12454-12462. [PMID: 33683872 PMCID: PMC10401608 DOI: 10.1021/acsami.0c20332] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Infection and delayed wound healing are two major serious complications related to traumatic injuries and cause a significant burden to patients and society. Most currently available drug delivery materials typically carry a single drug, lack protection from drug loading, and face challenges in on-demand and precisely controlled drug release. Here, we report a flower (Cirsium arvense)-inspired capsule-integrated multilayer nanofilm (FICIF), synthesized using a layer-by-layer self-assembly, for programmed multiple drug co-delivery for trauma (open fracture as an example) treatments. Our approach allows polypeptide multilayer nanofilms and innovative impregnated capsules to assemble hierarchical reservoirs with specific drug binding sites, shielding protection capability, and ordered packing structures. The resultant FICIF nanocarriers enable sustained and on-demand co-delivery of a unique immune-tuning cytokine (interleukin 12p70) and a growth factor (bone morphogenetic protein 2) in clinical use, resulting in extraordinary anti-infection (3 orders of magnitude improved bacterial killing) and bone regeneration (5 times enhanced bone healing) in treating infected rat femur fractures. The successful synthesis of these biomimetic high-performance delivery nanocoatings is expected to serve as a source of inspiration for the development of biomaterials for various clinical applications.
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Affiliation(s)
- Shichao Zhang
- Department of Orthopaedics, School of Medicine, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Justin Vaida
- Department of Orthopaedics, School of Medicine, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Josh Parenti
- Department of Orthopaedics, School of Medicine, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Brock A Lindsey
- Department of Orthopaedics, School of Medicine, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Malcolm Xing
- Department of Mechanical Engineering, University of Manitoba, and the Children's Hospital Research Institute of Manitoba, Winnipeg, Manitoba R3E 3P4, Canada
| | - Bingyun Li
- Department of Orthopaedics, School of Medicine, West Virginia University, Morgantown, West Virginia 26506, United States
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Loubet P, Koumar Y, Lechiche C, Cellier N, Schuldiner S, Kouyoumdjian P, Lavigne JP, Sotto A. Clinical features and outcome of Streptococcus agalactiae bone and joint infections over a 6-year period in a French university hospital. PLoS One 2021; 16:e0248231. [PMID: 33711071 PMCID: PMC7954318 DOI: 10.1371/journal.pone.0248231] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 02/22/2021] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Bone and joint infections (BJIs) due to Streptococcus agalactiae are rare but has been described to increase in the past few years. The objective of this study was to describe clinical features and outcomes of cases of S. BJIs. METHODS We conducted a retrospective analysis of adult cases of S. agalactiae BJIs that occurred between January 2009 and June 2015 in a French university hospital. The treatment success was assessed until 24 months after the end of antibiotic treatment. RESULTS Among the 26 patients included, 20 (77%) were male, mean age was 62 years ± 13 and mean Charlson comorbidity index score was 4.9 ± 3.2. Diabetes mellitus was the most common comorbidity (n = 14, 54%). Six had PJI (Prosthetic Joint Infections), five osteosynthesis-associated infections, 11 osteomyelitis and four native septic arthritis. Eleven patients had a delayed or late infection: six with a prosthetic joint infection and five with an internal fixation device infection. Sixteen patients (62%) had a polymicrobial BJI, most commonly with Gram-positive cocci (75%) notably Staphylococcus aureus (44%). Polymicrobial infections were more frequently found in foot infections (90% vs 44%, p = 0.0184). During the two-year follow-up, three patients died (3/25, 12%) and seven (7/25, 28%) had treatment failure. CONCLUSION Diabetes mellitus was the most common comorbidity. We observed an heterogenous management and a high rate of relapse.
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Affiliation(s)
- Paul Loubet
- Department of Infectious and Tropical Disease, VBMI, INSERM U1407, CHU Nîmes, Univ Montpellier, Nîmes, France
- * E-mail:
| | - Yatrika Koumar
- Department of Infectious and Tropical Disease, CHU Nîmes, Univ Montpellier, Nîmes, France
| | - Catherine Lechiche
- Department of Infectious and Tropical Disease, CHU Nîmes, Univ Montpellier, Nîmes, France
| | - Nicolas Cellier
- Department of Orthopedic and Trauma Surgery, CHU Nîmes, Univ Montpellier, Nîmes, France
| | - Sophie Schuldiner
- Department of Metabolic and Endocrine Disease, VBMI, INSERM U1407, CHU Nîmes, Univ Montpellier, Nîmes, France
| | - Pascal Kouyoumdjian
- Department of Orthopedic and Trauma Surgery, CHU Nîmes, Univ Montpellier, Nîmes, France
| | - Jean-Philippe Lavigne
- Department of Microbiology and Hospital Hygiene, VBMI, INSERM U1407, CHU Nîmes, Univ Montpellier, Nîmes, France
| | - Albert Sotto
- Department of Infectious and Tropical Disease, VBMI, INSERM U1407, CHU Nîmes, Univ Montpellier, Nîmes, France
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Henneberg M, Holloway-Kew K, Lucas T. Human major infections: Tuberculosis, treponematoses, leprosy-A paleopathological perspective of their evolution. PLoS One 2021; 16:e0243687. [PMID: 33630846 PMCID: PMC7906324 DOI: 10.1371/journal.pone.0243687] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 02/01/2021] [Indexed: 01/17/2023] Open
Abstract
The key to evolution is reproduction. Pathogens can either kill the human host or can invade the host without causing death, thus ensuring their own survival, reproduction and spread. Tuberculosis, treponematoses and leprosy are widespread chronic infectious diseases whereby the host is not immediately killed. These diseases are examples of the co-evolution of host and pathogen. They can be well studied as the paleopathological record is extensive, spanning over 200 human generations. The paleopathology of each disease has been well documented in the form of published synthetic analyses recording each known case and case frequencies in the samples they were derived from. Here the data from these synthetic analyses were re-analysed to show changes in the prevalence of each disease over time. A total of 69,379 skeletons are included in this study. There was ultimately a decline in the prevalence of each disease over time, this decline was statistically significant (Chi-squared, p<0.001). A trend may start with the increase in the disease’s prevalence before the prevalence declines, in tuberculosis the decline is monotonic. Increase in skeletal changes resulting from the respective diseases appears in the initial period of host-disease contact, followed by a decline resulting from co-adaptation that is mutually beneficial for the disease (spread and maintenance of pathogen) and host (less pathological reactions to the infection). Eventually either the host may become immune or tolerant, or the pathogen tends to be commensalic rather than parasitic.
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Affiliation(s)
- Maciej Henneberg
- Biological and Comparative Anatomy Research Unit, Adelaide Medical School, University of Adelaide, Adelaide, Australia
- Institute of Evolutionary Medicine, University of Zurich, Zurich, Switzerland
- Department of Archaeology, Flinders University, Adelaide, Australia
- * E-mail:
| | - Kara Holloway-Kew
- Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Deakin University, Geelong, Australia
| | - Teghan Lucas
- Department of Archaeology, Flinders University, Adelaide, Australia
- School of Medical Sciences, Anatomy, University of New South Wales, Sydney, New South Wales, Australia
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De Martinis M, Ginaldi L, Allegra A, Sirufo MM, Pioggia G, Tonacci A, Gangemi S. The Osteoporosis/Microbiota Linkage: The Role of miRNA. Int J Mol Sci 2020; 21:E8887. [PMID: 33255179 PMCID: PMC7727697 DOI: 10.3390/ijms21238887] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [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: 10/27/2020] [Revised: 11/18/2020] [Accepted: 11/23/2020] [Indexed: 02/07/2023] Open
Abstract
Hundreds of trillions of bacteria are present in the human body in a mutually beneficial symbiotic relationship with the host. A stable dynamic equilibrium exists in healthy individuals between the microbiota, host organism, and environment. Imbalances of the intestinal microbiota contribute to the determinism of various diseases. Recent research suggests that the microbiota is also involved in the regulation of the bone metabolism, and its alteration may induce osteoporosis. Due to modern molecular biotechnology, various mechanisms regulating the relationship between bone and microbiota are emerging. Understanding the role of microbiota imbalances in the development of osteoporosis is essential for the development of potential osteoporosis prevention and treatment strategies through microbiota targeting. A relevant complementary mechanism could be also constituted by the permanent relationships occurring between microbiota and microRNAs (miRNAs). miRNAs are a set of small non-coding RNAs able to regulate gene expression. In this review, we recapitulate the physiological and pathological meanings of the microbiota on osteoporosis onset by governing miRNA production. An improved comprehension of the relations between microbiota and miRNAs could furnish novel markers for the identification and monitoring of osteoporosis, and this appears to be an encouraging method for antagomir-guided tactics as therapeutic agents.
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Affiliation(s)
- Massimo De Martinis
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy; (L.G.); (M.M.S.)
- Allergy and Clinical Immunology Unit, Center for the Diagnosis and Treatment of Osteoporosis, AUSL 04 Teramo, 64100 Teramo, Italy
| | - Lia Ginaldi
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy; (L.G.); (M.M.S.)
- Allergy and Clinical Immunology Unit, Center for the Diagnosis and Treatment of Osteoporosis, AUSL 04 Teramo, 64100 Teramo, Italy
| | - Alessandro Allegra
- Division of Hematology, Department of Human Pathology in Adulthood and Childhood “Gaetano Barresi”, University of Messina, 98125 Messina, Italy;
| | - Maria Maddalena Sirufo
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy; (L.G.); (M.M.S.)
- Allergy and Clinical Immunology Unit, Center for the Diagnosis and Treatment of Osteoporosis, AUSL 04 Teramo, 64100 Teramo, Italy
| | - Giovanni Pioggia
- Institute for Biomedical Research and Innovation (IRIB), National Research Council of Italy (CNR), 98164 Messina, Italy;
| | - Alessandro Tonacci
- Clinical Physiology Institute, National Research Council of Italy (IFC-CNR), 56124 Pisa, Italy;
| | - Sebastiano Gangemi
- School and Operative Unit of Allergy and Clinical Immunology, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy;
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10
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Eriksen AMH, Nielsen TK, Matthiesen H, Carøe C, Hansen LH, Gregory DJ, Turner-Walker G, Collins MJ, Gilbert MTP. Bone biodeterioration-The effect of marine and terrestrial depositional environments on early diagenesis and bone bacterial community. PLoS One 2020; 15:e0240512. [PMID: 33057402 PMCID: PMC7561151 DOI: 10.1371/journal.pone.0240512] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 09/29/2020] [Indexed: 11/18/2022] Open
Abstract
Bacteria play an important role in the degradation of bone material. However, much remains to be learnt about the structure of their communities in degrading bone, and how the depositional environment influences their diversity throughout the exposure period. We genetically profiled the bacterial community in an experimental series of pig bone fragments (femur and humeri) deposited at different well-defined environments in Denmark. The bacterial community in the bone fragments and surrounding depositional environment were studied over one year, and correlated with the bioerosion damage patterns observed microscopically in the bones. We observed that the bacterial communities within the bones were heavily influenced by the local microbial community, and that the general bone microbial diversity increases with time after exposure. We found the presence of several known collagenase producing bacterial groups, and also observed increases in the relative abundance of several of these in bones with tunneling. We anticipate that future analyses using shotgun metagenomics on this and similar datasets will be able to provide insights into mechanisms of microbiome driven bone degradation.
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Affiliation(s)
- Anne Marie Høier Eriksen
- Environmental Archaeology & Materials Science, Conservation & Natural Sciences, National Museum of Denmark, København, Denmark
- The GLOBE Institute, University of Copenhagen, København, Denmark
| | - Tue Kjærgaard Nielsen
- Department of Plant and Environmental Science, University of Copenhagen, København, Denmark
| | - Henning Matthiesen
- Environmental Archaeology & Materials Science, Conservation & Natural Sciences, National Museum of Denmark, København, Denmark
| | - Christian Carøe
- The GLOBE Institute, University of Copenhagen, København, Denmark
| | - Lars Hestbjerg Hansen
- Department of Plant and Environmental Science, University of Copenhagen, København, Denmark
| | - David John Gregory
- Environmental Archaeology & Materials Science, Conservation & Natural Sciences, National Museum of Denmark, København, Denmark
| | - Gordon Turner-Walker
- Department of Cultural Heritage Conservation, National Yunlin University of Science & Technology, Douliu, Yunlin County, Taiwan
| | - Matthew James Collins
- The GLOBE Institute, University of Copenhagen, København, Denmark
- McDonald Institute for Archaeological Research, Cambridge, United Kingdom
| | - M. Thomas P. Gilbert
- The GLOBE Institute, University of Copenhagen, København, Denmark
- Norwegian University of Science and Technology, University Museum, Trondheim, Norway
- Center for Evolutionary Hologenomics, The GLOBE Institute, University of Copenhagen, København, Denmark
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11
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Emmons AL, Mundorff AZ, Keenan SW, Davoren J, Andronowski J, Carter DO, DeBruyn JM. Characterizing the postmortem human bone microbiome from surface-decomposed remains. PLoS One 2020; 15:e0218636. [PMID: 32639969 PMCID: PMC7343130 DOI: 10.1371/journal.pone.0218636] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 05/19/2020] [Indexed: 01/19/2023] Open
Abstract
Microbial colonization of bone is an important mechanism of postmortem skeletal degradation. However, the types and distributions of bone and tooth colonizing microbes are not well characterized. It is unknown if microbial communities vary in abundance or composition between bone element types, which could help explain differences in human DNA preservation. The goals of the present study were to (1) identify the types of microbes capable of colonizing different human bone types and (2) relate microbial abundances, diversity, and community composition to bone type and human DNA preservation. DNA extracts from 165 bone and tooth samples from three skeletonized individuals were assessed for bacterial loading and microbial community composition and structure. Random forest models were applied to predict operational taxonomic units (OTUs) associated with human DNA concentration. Dominant bacterial bone colonizers were from the phyla Proteobacteria, Actinobacteria, Firmicutes, Bacteroidetes, and Planctomycetes. Eukaryotic bone colonizers were from Ascomycota, Apicomplexa, Annelida, Basidiomycota, and Ciliophora. Bacterial loading was not a significant predictor of human DNA concentration in two out of three individuals. Random forest models were minimally successful in identifying microbes related to human DNA concentration, which were complicated by high variability in community structure between individuals and body regions. This work expands on our understanding of the types of microbes capable of colonizing the postmortem human skeleton and potentially contributing to human skeletal DNA degradation.
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Affiliation(s)
- Alexandra L. Emmons
- Department of Anthropology, University of Tennessee, Knoxville, Tennessee, United States of America
| | - Amy Z. Mundorff
- Department of Anthropology, University of Tennessee, Knoxville, Tennessee, United States of America
| | - Sarah W. Keenan
- Department of Geology and Geological Engineering, South Dakota School of Mines and Technology, Rapid City, South Dakota, United States of America
| | - Jonathan Davoren
- Bode Cellmark Forensics, Lorton, Virginia, United States of America
| | - Janna Andronowski
- Department of Anthropology, University of Tennessee, Knoxville, Tennessee, United States of America
| | - David O. Carter
- Division of Natural Sciences and Mathematics, Laboratory of Forensic Taphonomy, Forensic Sciences Unit, Chaminade University of Honolulu, Honolulu, Hawaii, United States of America
| | - Jennifer M. DeBruyn
- Department of Biosystems Engineering and Soil Science, University of Tennessee, Knoxville, Tennessee, United States of America
- * E-mail:
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12
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Abstract
Groundbreaking studies conducted in the mid-1980s demonstrated the possibility of sequencing ancient DNA (aDNA), which has allowed us to answer fundamental questions about the human past. Microbiologists were thus given a powerful tool to glimpse directly into inscrutable bacterial history, hitherto inaccessible due to a poor fossil record. Initially plagued by concerns regarding contamination, the field has grown alongside technical progress, with the advent of high-throughput sequencing being a breakthrough in sequence output and authentication. Albeit burdened with challenges unique to the analysis of bacteria, a growing number of viable sources for aDNA has opened multiple avenues of microbial research. Ancient pathogens have been extracted from bones, dental pulp, mummies and historical medical specimens and have answered focal historical questions such as identifying the aetiological agent of the black death as Yersinia pestis. Furthermore, ancient human microbiomes from fossilized faeces, mummies and dental plaque have shown shifts in human commensals through the Neolithic demographic transition and industrial revolution, whereas environmental isolates stemming from permafrost samples have revealed signs of ancient antimicrobial resistance. Culminating in an ever-growing repertoire of ancient genomes, the quickly expanding body of bacterial aDNA studies has also enabled comparisons of ancient genomes to their extant counterparts, illuminating the evolutionary history of bacteria. In this review we summarize the present avenues of research and contextualize them in the past of the field whilst also pointing towards questions still to be answered.
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Affiliation(s)
- Nicolas Arning
- Big Data Institute, Nuffield Department of Population Health, University of Oxford, Li Ka Shing Centre for Health Information and Discovery, Old Road Campus, Oxford, OX3 7LF, UK
| | - Daniel J. Wilson
- Big Data Institute, Nuffield Department of Population Health, University of Oxford, Li Ka Shing Centre for Health Information and Discovery, Old Road Campus, Oxford, OX3 7LF, UK
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13
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Farag MM, Ahmed MM, Abdallah NM, Swieszkowski W, Shehabeldine AM. The combined antibacterial and anticancer properties of nano Ce-containing Mg-phosphate ceramic. Life Sci 2020; 257:117999. [PMID: 32585244 DOI: 10.1016/j.lfs.2020.117999] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 06/14/2020] [Accepted: 06/19/2020] [Indexed: 12/13/2022]
Abstract
AIM This paper was mainly aimed at synthesis of Ce-containing nano-Mg-phosphate ceramic as a multifunctional material. MATERIALS AND METHODS Two ceramics based on Mg3(PO4)2 and Ce0.2Mg2.8(PO4)2 formulas (MP and MP-C, respectively) were synthesized. The synthesized powders were characterized by XRD, TEM, Zeta potential, and FTIR. Also, their dissolution behavior was tested in Tris-HCl buffer solution. Moreover, the antimicrobial efficacy was evaluated against gram-positive bacteria (Bacillus sphaericus MTCC 511 &Staphylococcus aureus MTCC 87) and gram-negative bacteria (Enterobacter aerogenes MTCC 111 &Pseudomonas aeruginosa MTCC 1034) using dick diffusion assay and microdilution method. Furthermore, the cell viability test was performed for the ceramics on Vero cells (African green monkey kidney cells), and their antitumor activity was determined by PC3 cell line (prostatic cancer). Also, the cellular uptake was determined by the flow cytometry. KEY FINDINGS The results showed that the substitution of Mg by Ce decreased the particle size from 40 to 90 nm for MP sample to 2-10 nm for MP-C sample and increased the degradation rate. Both samples showed excellent antimicrobial activities. Moreover, MP demonstrated more cell viability than MP-C on Vero cells at high concentrations, whereas, MP-C showed more antitumor activity on PC3 cells than MP sample. Moreover, MP-C showed a higher cell uptake than MP due to its smaller size and more negative charge. SIGNIFICANCE Mg-phosphate ceramic can be used in this study successfully as a delivery system for cerium ions and showed a high antitumor activity, which makes it highly recommended as safe and effective cancer treatment materials.
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Affiliation(s)
- Mohammad M Farag
- Glass Research Department, National Research Centre, 33 El-Behooth Str., 12622 Dokki, Cairo, Egypt.
| | - Manar M Ahmed
- Glass Research Department, National Research Centre, 33 El-Behooth Str., 12622 Dokki, Cairo, Egypt
| | - Nehal M Abdallah
- Microbiology Department, Faculty of Science, Alazhar University, Nasr City, 11651, Cairo, Egypt
| | - W Swieszkowski
- Biomaterials Group, Faculty of Materials Science and Engineering, Warsaw University of Technology, 02-507 Warsaw, Poland
| | - Amr M Shehabeldine
- Department of Botany and Microbiology, Faculty of Science (Boys), Al-Azhar University, Nasr City, Cairo 11884, Egypt
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14
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Muthukrishnan G, Masters EA, Daiss JL, Schwarz EM. Mechanisms of Immune Evasion and Bone Tissue Colonization That Make Staphylococcus aureus the Primary Pathogen in Osteomyelitis. Curr Osteoporos Rep 2019; 17:395-404. [PMID: 31721069 PMCID: PMC7344867 DOI: 10.1007/s11914-019-00548-4] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
PURPOSE OF REVIEW Staphylococcus aureus is the primary pathogen responsible for osteomyelitis, which remains a major healthcare burden. To understand its dominance, here we review the unique pathogenic mechanisms utilized by S. aureus that enable it to cause incurable osteomyelitis. RECENT FINDINGS Using an arsenal of toxins and virulence proteins, S. aureus kills and usurps immune cells during infection, to produce non-neutralizing pathogenic antibodies that thwart adaptive immunity. S. aureus also has specific mechanisms for distinct biofilm formation on implants, necrotic bone tissue, bone marrow, and within the osteocyte lacuno-canicular networks (OLCN) of live bone. In vitro studies have also demonstrated potential for intracellular colonization of osteocytes, osteoblasts, and osteoclasts. S. aureus has evolved a multitude of virulence mechanisms to achieve life-long infection of the bone, most notably colonization of OLCN. Targeting S. aureus proteins involved in these pathways could provide new targets for antibiotics and immunotherapies.
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Affiliation(s)
- Gowrishankar Muthukrishnan
- Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood Avenue, Box 665, Rochester, NY, 14642, USA
- Department of Orthopaedics, University of Rochester Medical Center, Rochester, NY, USA
| | - Elysia A Masters
- Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood Avenue, Box 665, Rochester, NY, 14642, USA
- Department of Biomedical Engineering, University of Rochester Medical Center, Rochester, NY, USA
| | - John L Daiss
- Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood Avenue, Box 665, Rochester, NY, 14642, USA
- Department of Orthopaedics, University of Rochester Medical Center, Rochester, NY, USA
| | - Edward M Schwarz
- Center for Musculoskeletal Research, University of Rochester Medical Center, 601 Elmwood Avenue, Box 665, Rochester, NY, 14642, USA.
- Department of Orthopaedics, University of Rochester Medical Center, Rochester, NY, USA.
- Department of Biomedical Engineering, University of Rochester Medical Center, Rochester, NY, USA.
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15
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Guss JD, Taylor E, Rouse Z, Roubert S, Higgins CH, Thomas CJ, Baker SP, Vashishth D, Donnelly E, Shea MK, Booth SL, Bicalho RC, Hernandez CJ. The microbial metagenome and bone tissue composition in mice with microbiome-induced reductions in bone strength. Bone 2019; 127:146-154. [PMID: 31207357 PMCID: PMC6708759 DOI: 10.1016/j.bone.2019.06.010] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 05/29/2019] [Accepted: 06/13/2019] [Indexed: 01/10/2023]
Abstract
The genetic components of microbial species that inhabit the body are known collectively as the microbiome. Modifications to the microbiome have been implicated in disease processes throughout the body and have recently been shown to influence bone. Prior work has associated changes in the microbial taxonomy (phyla, class, species, etc.) in the gut with bone phenotypes but has provided limited information regarding mechanisms. With the goal of achieving a more mechanistic understanding of the effects of the microbiome on bone, we perform a metagenomic analysis of the gut microbiome that provides information on the functional capacity of the microbes (all microbial genes present) rather than only characterizing the microbial taxa. Male C57Bl/6 mice were subjected to disruption of the gut microbiota (ΔMicrobiome) using oral antibiotics (from 4 to 16 weeks of age) or remained untreated (n = 6-7/group). Disruption of the gut microbiome in this manner has been shown to lead to reductions in tissue mechanical properties and whole bone strength in adulthood with only minor changes in bone geometry and density. ΔMicrobiome led to modifications in the abundance of microbial genes responsible for the synthesis of the bacterial cell wall and capsule; bacterially synthesized carbohydrates; and bacterially synthesized vitamins (B and K) (p < 0.01). Follow up analysis focused on vitamin K, a factor that has previously been associated with bone health. The vitamin K content of the cecum, liver and kidneys was primarily microbe-derived forms of vitamin K (menaquinones) and was decreased by 32-66% in ∆Microbiome mice compared to untreated animals (p < 0.01). Bone mineral crystallinity determined using Raman spectroscopy was decreased in ∆Microbiome mice (p = 0.01). This study illustrates the use of metagenomic analysis to link the microbiome to bone phenotypes and provides preliminary findings implicating microbially synthesized vitamin-K as a regulator of bone matrix quality.
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Affiliation(s)
- Jason D Guss
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY, USA; Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA
| | - Erik Taylor
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY, USA
| | - Zach Rouse
- Material Science and Engineering, Cornell University, New York, NY, USA
| | - Sebastian Roubert
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY, USA
| | | | - Corinne J Thomas
- Department of Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Shefford P Baker
- Material Science and Engineering, Cornell University, New York, NY, USA
| | - Deepak Vashishth
- Department of Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Eve Donnelly
- Material Science and Engineering, Cornell University, New York, NY, USA; Hospital for Special Surgery, New York, NY, USA
| | - M Kyla Shea
- Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA, USA
| | - Sarah L Booth
- Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA, USA
| | | | - Christopher J Hernandez
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY, USA; Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA; Hospital for Special Surgery, New York, NY, USA.
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16
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Hirschfeld CB, Kapadia SN, Bryan J, Jannat-Khah DP, May B, Vielemeyer O, Esquivel EL. Impact of diagnostic bone biopsies on the management of non-vertebral osteomyelitis: A retrospective cohort study. Medicine (Baltimore) 2019; 98:e16954. [PMID: 31441894 PMCID: PMC6716736 DOI: 10.1097/md.0000000000016954] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Optimal antibiotic management of patients with osteomyelitis remains a challenge for many clinicians. Although image-guided bone biopsy (IGB) remains the gold standard, its role in confirming diagnosis and guiding antibiotic management is not clear in patients with non-vertebral osteomyelitis.To determine the diagnostic yield of IGB and its impact on antibiotic management in non-vertebral osteomyelitis.Retrospective cohort study.Urban academic medical center.Patients admitted for non-vertebral osteomyelitis who underwent image-guided bone biopsy.Primary outcomes were microbiologic and histopathological results. We evaluated the impact of IGB on clinician-initiated changes in antibiotic regimen before and after biopsy.We evaluated 203 bone biopsies in 185 patients with clinical suspicion of osteomyelitis. 79% of patient received antibiotics prior to biopsy. Bone cultures were positive in 28% and histopathology confirmed osteomyelitis in 29%, but concordance was poor. Furthermore, clinical suspicion of infection was much higher, given that 68% received empiric antibiotics. Leukocytosis was significantly associated with positive cultures in multivariate analysis. There was no statistically significant correlation between antibiotic management and bone culture results. When culture yielded an organism, empiric regimens were kept the same, broadened or narrowed with equal frequency; targeted regimens were chosen only in 4 cases. Despite negative cultures in 98/138 cases having received empiric treatment, antibiotics were discontinued in only 8 cases. Even when empiric treatment was not given, negative cultures did not dissuade clinicians from eventual antibiotic use in a significant number of cases (17/48). In 46/71 patients whose final regimen included vancomycin, there was no evidence of current or past infection with MRSA.In patients with non-vertebral osteomyelitis, the diagnostic yield of image-guided bone biopsy is low, and clinicians frequently make decisions regarding antibiotic management that are not aligned with culture results.
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Affiliation(s)
- Cole B. Hirschfeld
- Weill Cornell Medical College
- Department of Medicine, Columbia University College of Physicians and Surgeons
| | | | - Joanna Bryan
- Division of General Internal Medicine, Weill Department of Medicine
| | | | - Benjamin May
- Division of Interventional Radiology, Department of Radiology, Weill Cornell Medicine, New York, NY, USA
| | - Ole Vielemeyer
- Weill Cornell Medical College
- Division of Infectious Diseases
| | - Ernie L. Esquivel
- Weill Cornell Medical College
- Division of General Internal Medicine, Weill Department of Medicine
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17
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Abstract
In Australia in 2015, Candida auris sternal osteomyelitis was diagnosed in a 65-year-old man with a history of intensive care treatment in Kenya in 2012 and without a history of cardiac surgery. The isolate was South Africa clade III. Clinicians should note that C. auris can cause low-grade disease years after colonization.
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18
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Velsko IM, Fellows Yates JA, Aron F, Hagan RW, Frantz LAF, Loe L, Martinez JBR, Chaves E, Gosden C, Larson G, Warinner C. Microbial differences between dental plaque and historic dental calculus are related to oral biofilm maturation stage. Microbiome 2019; 7:102. [PMID: 31279340 PMCID: PMC6612086 DOI: 10.1186/s40168-019-0717-3] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 06/24/2019] [Indexed: 05/19/2023]
Abstract
BACKGROUND Dental calculus, calcified oral plaque biofilm, contains microbial and host biomolecules that can be used to study historic microbiome communities and host responses. Dental calculus does not typically accumulate as much today as historically, and clinical oral microbiome research studies focus primarily on living dental plaque biofilm. However, plaque and calculus reflect different conditions of the oral biofilm, and the differences in microbial characteristics between the sample types have not yet been systematically explored. Here, we compare the microbial profiles of modern dental plaque, modern dental calculus, and historic dental calculus to establish expected differences between these substrates. RESULTS Metagenomic data was generated from modern and historic calculus samples, and dental plaque metagenomic data was downloaded from the Human Microbiome Project. Microbial composition and functional profile were assessed. Metaproteomic data was obtained from a subset of historic calculus samples. Comparisons between microbial, protein, and metabolomic profiles revealed distinct taxonomic and metabolic functional profiles between plaque, modern calculus, and historic calculus, but not between calculus collected from healthy teeth and periodontal disease-affected teeth. Species co-exclusion was related to biofilm environment. Proteomic profiling revealed that healthy tooth samples contain low levels of bacterial virulence proteins and a robust innate immune response. Correlations between proteomic and metabolomic profiles suggest co-preservation of bacterial lipid membranes and membrane-associated proteins. CONCLUSIONS Overall, we find that there are systematic microbial differences between plaque and calculus related to biofilm physiology, and recognizing these differences is important for accurate data interpretation in studies comparing dental plaque and calculus.
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Affiliation(s)
- Irina M Velsko
- The Palaeogenomics and Bio-Archaeology Research Network, Research Laboratory for Archaeology and the History of Art, University of Oxford, Oxford, OX1 3QY, UK.
- Department of Archaeogenetics, Max Planck Institute for the Science of Human History, 07745, Jena, Germany.
| | - James A Fellows Yates
- Department of Archaeogenetics, Max Planck Institute for the Science of Human History, 07745, Jena, Germany
| | - Franziska Aron
- Department of Archaeogenetics, Max Planck Institute for the Science of Human History, 07745, Jena, Germany
| | - Richard W Hagan
- Department of Archaeogenetics, Max Planck Institute for the Science of Human History, 07745, Jena, Germany
| | - Laurent A F Frantz
- The Palaeogenomics and Bio-Archaeology Research Network, Research Laboratory for Archaeology and the History of Art, University of Oxford, Oxford, OX1 3QY, UK
- School of Biological and Chemical Sciences, Queen Mary University of London, London, E1 4NS, UK
| | - Louise Loe
- Heritage Burial Services, Oxford Archaeology, Oxford, OX2 0ES, UK
| | | | - Eros Chaves
- Department of Periodontics, University of Oklahoma Health Sciences Center, Oklahoma City, 73117, OK, USA
- Current address: Pinellas Dental Specialties, Largo, FL, 33776, USA
| | - Chris Gosden
- The Palaeogenomics and Bio-Archaeology Research Network, Research Laboratory for Archaeology and the History of Art, University of Oxford, Oxford, OX1 3QY, UK
| | - Greger Larson
- The Palaeogenomics and Bio-Archaeology Research Network, Research Laboratory for Archaeology and the History of Art, University of Oxford, Oxford, OX1 3QY, UK
| | - Christina Warinner
- Department of Archaeogenetics, Max Planck Institute for the Science of Human History, 07745, Jena, Germany.
- Department of Periodontics, University of Oklahoma Health Sciences Center, Oklahoma City, 73117, OK, USA.
- Department of Anthropology, University of Oklahoma, Norman, OK, 73019, USA.
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19
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Saitta ET, Liang R, Lau MCY, Brown CM, Longrich NR, Kaye TG, Novak BJ, Salzberg SL, Norell MA, Abbott GD, Dickinson MR, Vinther J, Bull ID, Brooker RA, Martin P, Donohoe P, Knowles TDJ, Penkman KEH, Onstott T. Cretaceous dinosaur bone contains recent organic material and provides an environment conducive to microbial communities. eLife 2019; 8:e46205. [PMID: 31210129 PMCID: PMC6581507 DOI: 10.7554/elife.46205] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 05/12/2019] [Indexed: 12/12/2022] Open
Abstract
Fossils were thought to lack original organic molecules, but chemical analyses show that some can survive. Dinosaur bone has been proposed to preserve collagen, osteocytes, and blood vessels. However, proteins and labile lipids are diagenetically unstable, and bone is a porous open system, allowing microbial/molecular flux. These 'soft tissues' have been reinterpreted as biofilms. Organic preservation versus contamination of dinosaur bone was examined by freshly excavating, with aseptic protocols, fossils and sedimentary matrix, and chemically/biologically analyzing them. Fossil 'soft tissues' differed from collagen chemically and structurally; while degradation would be expected, the patterns observed did not support this. 16S rRNA amplicon sequencing revealed that dinosaur bone hosted an abundant microbial community different from lesser abundant communities of surrounding sediment. Subsurface dinosaur bone is a relatively fertile habitat, attracting microbes that likely utilize inorganic nutrients and complicate identification of original organic material. There exists potential post-burial taphonomic roles for subsurface microorganisms.
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Affiliation(s)
- Evan T Saitta
- Integrative Research Center, Section of Earth SciencesField Museum of Natural HistoryChicagoUnited States
| | - Renxing Liang
- Department of GeosciencesPrinceton UniversityPrincetonUnited States
| | - Maggie CY Lau
- Department of GeosciencesPrinceton UniversityPrincetonUnited States
- Institute of Deep-Sea Science and EngineeringChinese Academy of SciencesSanyaChina
| | - Caleb M Brown
- Royal Tyrrell Museum of PalaeontologyDrumhellerCanada
| | - Nicholas R Longrich
- Department of Biology and BiochemistryUniversity of BathBathUnited Kingdom
- Milner Centre for EvolutionUniversity of BathBathUnited Kingdom
| | - Thomas G Kaye
- Foundation for Scientific AdvancementSierra VistaUnited States
| | - Ben J Novak
- Revive and RestoreSan FranciscoUnited States
| | - Steven L Salzberg
- Department of Biomedical Engineering, Center for Computational Biology, McKusick-Nathans Institute of Genetic MedicineJohns Hopkins UniversityBaltimoreUnited States
- Department of Computer Science, Center for Computational Biology, McKusick-Nathans Institute of Genetic MedicineJohns Hopkins UniversityBaltimoreUnited States
- Department of Biostatistics, Center for Computational Biology, McKusick-Nathans Institute of Genetic MedicineJohns Hopkins UniversityBaltimoreUnited States
| | - Mark A Norell
- Division of PaleontologyAmerican Museum of Natural HistoryNew YorkUnited States
| | - Geoffrey D Abbott
- School of Natural and Environmental SciencesNewcastle UniversityNewcastle upon TyneUnited Kingdom
| | | | - Jakob Vinther
- School of Earth SciencesUniversity of BristolBristolUnited Kingdom
- School of Biological SciencesUniversity of BristolBristolUnited Kingdom
| | - Ian D Bull
- School of ChemistryUniversity of BristolBristolUnited Kingdom
| | | | - Peter Martin
- School of PhysicsUniversity of BristolBristolUnited Kingdom
| | - Paul Donohoe
- School of Natural and Environmental SciencesNewcastle UniversityNewcastle upon TyneUnited Kingdom
| | - Timothy DJ Knowles
- School of ChemistryUniversity of BristolBristolUnited Kingdom
- School of ArtsUniversity of BristolBristolUnited Kingdom
| | | | - Tullis Onstott
- Department of GeosciencesPrinceton UniversityPrincetonUnited States
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20
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Viñuela-Prieto JM, Soria-García AM, González-Romero M, Candel FJ. Bacterial contamination rate and associated factors during bone and tendon allograft procurement from Spanish donors: exploring the contamination patterns. J Hosp Infect 2019; 102:287-294. [PMID: 30772451 DOI: 10.1016/j.jhin.2019.02.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 02/08/2019] [Indexed: 01/05/2023]
Abstract
BACKGROUND Allograft contamination during extraction represents a major limiting factor for tissue bank availability. Contamination rates remain persistently high independent of the hospital, country or year considered. AIM To analyse the factors associated with contamination of bone and tendon samples extracted from Spanish donors. METHODS Data for 1162 bone and tendon samples extracted from 102 donors between 2014 and 2017 were collected retrospectively from the hospital database. Descriptive statistics, potentially associated factors and correlation of contamination between samples extracted from different anatomical locations of the same donor were analysed. FINDINGS In total, 227 (19.54%) of the extracted samples [131 (18.49%) bone samples and 96 (20.92%) tendon samples] rendered positive cultures and were discarded. Male sex [odds ratio (OR) 2.023; P=0.019], extraction of >10 samples per donor (OR 1.997; P<0.001) and extraction time >240 min (OR 1.755; P=0.001) were factors independently associated with a higher contamination rate. Meanwhile, the tissue sample type 'bone-patellar tendon-bone' was associated with a significantly lower contamination rate (OR 0.446; P=0.001). Significant correlation between certain localization of contaminated samples and the concordance of bacterial species was also observed. CONCLUSION Factors related to the extraction procedure, such as total extraction time, extraction sequence, number of samples extracted and anatomical location of extracted samples, play a major role in allograft contamination. Further optimization of procedures, guided by the contamination patterns analysed in this study, should help to increase tissue bank availability.
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Affiliation(s)
- J M Viñuela-Prieto
- Transplant Coordination Department, Hospital Clínico San Carlos, Madrid, Spain; School of Medicine, Complutense University, Madrid, Spain.
| | - A M Soria-García
- Transplant Coordination Department, Hospital Clínico San Carlos, Madrid, Spain
| | - M González-Romero
- Transplant Coordination Department, Hospital Clínico San Carlos, Madrid, Spain
| | - F J Candel
- Transplant Coordination Department, Hospital Clínico San Carlos, Madrid, Spain; Health Research Institute, Hospital Clínico San Carlos, Madrid, Spain
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21
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Taylor GM, Murphy EM, Mendum TA, Pike AWG, Linscott B, Wu H, O’Grady J, Richardson H, O’Donovan E, Troy C, Stewart GR. Leprosy at the edge of Europe-Biomolecular, isotopic and osteoarchaeological findings from medieval Ireland. PLoS One 2018; 13:e0209495. [PMID: 30586394 PMCID: PMC6306209 DOI: 10.1371/journal.pone.0209495] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 12/06/2018] [Indexed: 11/18/2022] Open
Abstract
Relatively little is known of leprosy in Medieval Ireland; as an island located at the far west of Europe it has the potential to provide interesting insights in relation to the historical epidemiology of the disease. To this end the study focuses on five cases of probable leprosy identified in human skeletal remains excavated from inhumation burials. Three of the individuals derived from the cemetery of St Michael Le Pole, Golden Lane, Dublin, while single examples were also identified from Ardreigh, Co. Kildare, and St Patrick’s Church, Armoy, Co. Antrim. The individuals were radiocarbon dated and examined biomolecularly for evidence of either of the causative pathogens, M. leprae or M. lepromatosis. Oxygen and strontium isotopes were measured in tooth enamel and rib samples to determine where the individuals had spent their formative years and to ascertain if they had undertaken any recent migrations. We detected M. leprae DNA in the three Golden Lane cases but not in the probable cases from either Ardreigh Co. Kildare or Armoy, Co. Antrim. M. lepromatosis was not detected in any of the burals. DNA preservation was sufficiently robust to allow genotyping of M. leprae strains in two of the Golden Lane burials, SkCXCV (12-13th century) and SkCCXXX (11-13th century). These strains were found to belong on different lineages of the M. leprae phylogenetic tree, namely branches 3 and 2 respectively. Whole genome sequencing was also attempted on these two isolates with a view to gaining further information but poor genome coverage precluded phylogenetic analysis. Data from the biomolecular study was combined with osteological, isotopic and radiocarbon dating to provide a comprehensive and multidisciplinary study of the Irish cases. Strontium and oxygen isotopic analysis indicate that two of the individuals from Golden Lane (SkCXLVIII (10-11th century) and SkCXCV) were of Scandinavian origin, while SkCCXXX may have spent his childhood in the north of Ireland or central Britain. We propose that the Vikings were responsible for introducing leprosy to Ireland. This work adds to our knowledge of the likely origins of leprosy in Medieval Ireland and will hopefully stimulate further research into the history and spread of this ancient disease across the world.
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Affiliation(s)
- G. Michael Taylor
- Department of Microbial Sciences, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
| | - Eileen M. Murphy
- Archaeology and Palaeoecology, School of Natural and Built Environment, Queen’s University Belfast, Belfast, Northern Ireland
- * E-mail:
| | - Tom A. Mendum
- Department of Microbial Sciences, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
| | - Alistair W. G. Pike
- Department of Archaeology, University of Southampton, Highfield Road, Southampton, United Kingdom
| | - Bethan Linscott
- Department of Archaeology, University of Southampton, Highfield Road, Southampton, United Kingdom
| | - Huihai Wu
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
| | - Justin O’Grady
- Norwich Medical School, University of East Anglia, Norwich, England, United Kingdom
| | - Hollian Richardson
- Norwich Medical School, University of East Anglia, Norwich, England, United Kingdom
| | - Edmond O’Donovan
- Edmond O’Donovan & Associates, Archaeological Consultant, Bray, Co. Wicklow, Republic of Ireland
| | - Carmelita Troy
- Rubicon Heritage Services Ltd, Unit 2, Europa Enterprise Park, Midleton, Co. Cork, Republic of Ireland
| | - Graham R. Stewart
- Department of Microbial Sciences, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
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Dydak K, Junka A, Szymczyk P, Chodaczek G, Toporkiewicz M, Fijałkowski K, Dudek B, Bartoszewicz M. Development and biological evaluation of Ti6Al7Nb scaffold implants coated with gentamycin-saturated bacterial cellulose biomaterial. PLoS One 2018; 13:e0205205. [PMID: 30356274 PMCID: PMC6200220 DOI: 10.1371/journal.pone.0205205] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 09/20/2018] [Indexed: 11/18/2022] Open
Abstract
Herein we present an innovative method of coating the surface of Titanium-Aluminium-Niobium bone scaffold implants with bacterial cellulose (BC) polymer saturated with antibiotic. Customized Ti6Al7Nb scaffolds manufactured using Selective Laser Melting were immersed in a suspension of Komagataeibacter xylinus bacteria which displays an ability to produce a 3-dimensional structure of bio-cellulose polymer. The process of complete implant coating with BC took on average 7 days. Subsequently, the BC matrix was cleansed by means of alkaline lysis and saturated with gentamycin. Scanning electron microscopy revealed that BC adheres and penetrates into the implant scaffold structure. The viability and development of the cellular layer on BC micro-structure were visualized by means of confocal microscopy. The BC-coated implants displayed a significantly lower cytotoxicity against osteoblast and fibroblast cell cultures in vitro in comparison to non-coated implants. It was also noted that gentamycin released from BC-coated implants inhibited the growth of Staphylococcus aureus cultures in vitro, confirming the suitability of such implant modification for preventing hostile microbial colonization. As demonstrated using digital microscopy, the procedure used for implant coating and BC chemical cleansing did not flaw the biomaterial structure. The results presented herein are of high translational value with regard to future use of customized, BC-coated and antibiotic-saturated implants designed for use in orthopedic applications to speed up recovery and to reduce the risk of musculoskeletal infections.
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Affiliation(s)
- Karolina Dydak
- Department of Pharmaceutical Microbiology and Parasitology, Wroclaw Medical University, Wrocław, Poland
| | - Adam Junka
- Department of Pharmaceutical Microbiology and Parasitology, Wroclaw Medical University, Wrocław, Poland
| | - Patrycja Szymczyk
- Center for Advanced Manufacturing Technologies (CAMT/FPC), Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, Wrocław, Poland
| | - Grzegorz Chodaczek
- Laboratory of Confocal Microscopy, Polish Center for Technology Development PORT, Wrocław, Wrocław, Poland
| | - Monika Toporkiewicz
- Laboratory of Confocal Microscopy, Polish Center for Technology Development PORT, Wrocław, Wrocław, Poland
| | - Karol Fijałkowski
- Department of Immunology, Microbiology and Physiological Chemistry, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology, Szczecin, Szczecin, Poland
| | - Bartłomiej Dudek
- Laboratory of Microbiology, Polish Center for Technology Development PORT, Wrocław, Wrocław, Poland
| | - Marzenna Bartoszewicz
- Department of Pharmaceutical Microbiology and Parasitology, Wroclaw Medical University, Wrocław, Poland
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23
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Brandt SL, Putnam NE, Cassat JE, Serezani CH. Innate Immunity to Staphylococcus aureus: Evolving Paradigms in Soft Tissue and Invasive Infections. The Journal of Immunology 2018; 200:3871-3880. [PMID: 29866769 PMCID: PMC6028009 DOI: 10.4049/jimmunol.1701574] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 03/12/2018] [Indexed: 01/18/2023]
Abstract
Staphylococcus aureus causes a wide range of diseases that together embody a significant public health burden. Aided by metabolic flexibility and a large virulence repertoire, S. aureus has the remarkable ability to hematogenously disseminate and infect various tissues, including skin, lung, heart, and bone, among others. The hallmark lesions of invasive staphylococcal infections, abscesses, simultaneously denote the powerful innate immune responses to tissue invasion as well as the ability of staphylococci to persist within these lesions. In this article, we review the innate immune responses to S. aureus during infection of skin and bone, which serve as paradigms for soft tissue and bone disease, respectively.
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Affiliation(s)
- Stephanie L Brandt
- Division of Infectious Disease, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN 46202
| | - Nicole E Putnam
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN 37232
| | - James E Cassat
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN 37232;
- Division of Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN 37232
- Vanderbilt Center for Bone Biology, Vanderbilt University Medical Center, Nashville, TN 37232; and
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37232
| | - C Henrique Serezani
- Division of Infectious Disease, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232;
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN 46202
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN 37232
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24
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Schuenemann VJ, Kumar Lankapalli A, Barquera R, Nelson EA, Iraíz Hernández D, Acuña Alonzo V, Bos KI, Márquez Morfín L, Herbig A, Krause J. Historic Treponema pallidum genomes from Colonial Mexico retrieved from archaeological remains. PLoS Negl Trop Dis 2018; 12:e0006447. [PMID: 29927932 PMCID: PMC6013024 DOI: 10.1371/journal.pntd.0006447] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 04/12/2018] [Indexed: 12/20/2022] Open
Abstract
Treponema pallidum infections occur worldwide causing, among other diseases, syphilis and yaws. In particular sexually transmitted syphilis is regarded as a re-emerging infectious disease with millions of new infections annually. Here we present three historic T. pallidum genomes (two from T. pallidum ssp. pallidum and one from T. pallidum ssp. pertenue) that have been reconstructed from skeletons recovered from the Convent of Santa Isabel in Mexico City, operational between the 17th and 19th century. Our analyses indicate that different T. pallidum subspecies caused similar diagnostic presentations that are normally associated with syphilis in infants, and potential evidence of a congenital infection of T. pallidum ssp. pertenue, the causative agent of yaws. This first reconstruction of T. pallidum genomes from archaeological material opens the possibility of studying its evolutionary history at a resolution previously assumed to be out of reach.
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Affiliation(s)
- Verena J. Schuenemann
- Institute for Archaeological Sciences, University of Tübingen, Tübingen, Germany
- Senckenberg Center for Human Evolution and Paleoenvironment, University of Tübingen, Tübingen, Germany
- Institute of Evolutionary Medicine, University of Zurich, Zurich, Switzerland
| | - Aditya Kumar Lankapalli
- Department for Archaeogenetics, Max Planck Institute for the Science of Human History, Jena, Germany
| | - Rodrigo Barquera
- Department for Archaeogenetics, Max Planck Institute for the Science of Human History, Jena, Germany
- Molecular Genetics Laboratory, National School of Anthropology and History, Mexico City, Mexico
| | - Elizabeth A. Nelson
- Department for Archaeogenetics, Max Planck Institute for the Science of Human History, Jena, Germany
| | - Diana Iraíz Hernández
- Department for Archaeogenetics, Max Planck Institute for the Science of Human History, Jena, Germany
- Molecular Genetics Laboratory, National School of Anthropology and History, Mexico City, Mexico
| | - Víctor Acuña Alonzo
- Molecular Genetics Laboratory, National School of Anthropology and History, Mexico City, Mexico
| | - Kirsten I. Bos
- Department for Archaeogenetics, Max Planck Institute for the Science of Human History, Jena, Germany
| | | | - Alexander Herbig
- Department for Archaeogenetics, Max Planck Institute for the Science of Human History, Jena, Germany
| | - Johannes Krause
- Institute for Archaeological Sciences, University of Tübingen, Tübingen, Germany
- Senckenberg Center for Human Evolution and Paleoenvironment, University of Tübingen, Tübingen, Germany
- Department for Archaeogenetics, Max Planck Institute for the Science of Human History, Jena, Germany
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25
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Affiliation(s)
- René Rizzoli
- Service of Bone Diseases, Geneva University Hospitals and Faculty of Medicine, 1211, Geneva 14, Switzerland.
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26
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Abstract
The gut microbiota (GM) is the whole of commensal, symbiotic, and pathogenic microorganisms living in our intestine. The GM-host interactions contribute to the maturation of the host immune system, modulating its systemic response. It is well documented that GM can interact with non-enteral cells such as immune cells, dendritic cells, and hepatocytes, producing molecules such as short-chain fatty acids, indole derivatives, polyamines, and secondary bile acid. The receptors for some of these molecules are expressed on immune cells, and modulate the differentiation of T effector and regulatory cells: this is the reason why dysbiosis is correlated with several autoimmune, metabolic, and neurodegenerative diseases. Due to the close interplay between immune and bone cells, GM has a central role in maintaining bone health and influences bone turnover and density. GM can improve bone health also increasing calcium absorption and modulating the production of gut serotonin, a molecule that interacts with bone cells and has been suggested to act as a bone mass regulator. Thus, GM manipulation by consumption of antibiotics, changes in dietary habits, and the use of pre- and probiotics may affect bone health. This review summarizes evidences on the influence of GM on immune system and on bone turnover and density and how GM manipulation may influence bone health.
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Affiliation(s)
- P D'Amelio
- Gerontology and Bone Metabolic Diseases Section, Department of Medical Science, University of Torino, CorsoDogliotti 14, 10126, Turin, Italy.
| | - F Sassi
- Gerontology and Bone Metabolic Diseases Section, Department of Medical Science, University of Torino, CorsoDogliotti 14, 10126, Turin, Italy
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27
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Abstract
The mutualistic interaction between the gut microbiota (GM) and its host profoundly shapes many aspects of our physiology. The composition and activity of the gut microbiota is modulated by environmental factors such as dietary habits and antibiotic treatments. In rodents, studies demonstrate that the GM is a crucial regulator of bone metabolism and that modulation of the GM composition by probiotic interventions can prevent castration-induced bone loss. Short-term colonization of germ-free mice with GM results in an activation of CD4+T cells, resulting in increased levels of pro-inflammatory cytokines in bone and thereby activation of osteoclastic bone resorption. Besides these immune-mediated effects on bone mass, the GM is involved in nutritional uptake and may, thereby, regulate overall body growth and bone sizes possibly mediated via altered IGF-I levels. We recently introduced a new term "osteomicrobiology" for the rapidly emerging research field of the role of the microbiota in bone health. This research field is aimed to bridge the gaps between bone physiology, gastroenterology, immunology, and microbiology. Future studies will determine if the GM is a novel therapeutic target for osteoporosis and if the GM composition might be used as a biomarker for fracture prediction.
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Affiliation(s)
- Claes Ohlsson
- Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Vita Stråket 11, 413 45, Gothenburg, Sweden
| | - Klara Sjögren
- Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Vita Stråket 11, 413 45, Gothenburg, Sweden.
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28
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Abstract
Increasing interest in functional foods has driven discovery in the area of bioactive compounds. Prebiotics are non-digestible carbohydrate compounds that, when consumed, elicit health benefits and aid in the prevention and treatment of chronic diseases. While prebiotics have been shown to improve a number of chronic, inflammatory conditions, growing evidence exists for prebiotic effects on calcium metabolism and bone health. These novel dietary fibers have been shown to increase calcium absorption in the lower intestines of both preclinical and human models. Rodent models have also been imperative for understanding prebiotic effects on bone mineral density and measures of skeletal strength. Although fewer data are available for humans, bone-related prebiotic effects exist across the lifecycle, suggesting benefits for attainment of peak bone mass during adolescence and minimized bone resorption among postmenopausal women. These effects are thought to occur through prebiotic-microbe interactions in the large intestine. Current prebiotic mechanisms for improved mineral absorption and skeletal health include alterations in gut microbiota composition, production of short-chain fatty acids, altered intestinal pH, biomarker modification, and immune system regulation. While the majority of available data support improved mineral bioavailability, emerging evidence suggests alternate microbial roles and the presence of an intricate gut-bone signaling axis. Overall, the current scientific literature supports prebiotic consumption as a cost-effective and sustainable approach for improved skeletal health and/or fracture prevention. The goal of this review is to discuss both foundational and recent research in the area of prebiotics, mineral metabolism, and bone health.
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Affiliation(s)
- Corrie M Whisner
- School of Nutrition & Health Promotion, Arizona State University, 500 North 5th Street, Phoenix, AZ, 85004, USA.
| | - Luisa F Castillo
- School of Nutrition & Health Promotion, Arizona State University, 500 North 5th Street, Phoenix, AZ, 85004, USA
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29
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Abstract
Fermented milk products like yogurt or soft cheese provide calcium, phosphorus, and protein. All these nutrients influence bone growth and bone loss. In addition, fermented milk products may contain prebiotics like inulin which may be added to yogurt, and provide probiotics which are capable of modifying intestinal calcium absorption and/or bone metabolism. On the other hand, yogurt consumption may ensure a more regular ingestion of milk products and higher compliance, because of various flavors and sweetness. Bone mass accrual, bone homeostasis, and attenuation of sex hormone deficiency-induced bone loss seem to benefit from calcium, protein, pre-, or probiotics ingestion, which may modify gut microbiota composition and metabolism. Fermented milk products might also represent a marker of lifestyle promoting healthy bone health.
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Affiliation(s)
- René Rizzoli
- Service of Bone Diseases, Faculty of Medicine, Geneva University Hospitals, 1211, Geneva 14, Switzerland.
| | - Emmanuel Biver
- Service of Bone Diseases, Faculty of Medicine, Geneva University Hospitals, 1211, Geneva 14, Switzerland
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30
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Mammarappallil JG, Seyler TM, Lenchik L, Wuertzer SD, Plate JF. Impact of Fluoroscopically Guided Bone Biopsy on Antibiotic Management of Osteomyelitis in the Lower Extremity. J Surg Orthop Adv 2018; 27:277-280. [PMID: 30777826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
This study evaluated the impact of fluoroscopically guided percutaneous bone biopsy on altering antibiotic regimens in lower extremity osteomyelitis. Eighty-eight patients who received fluoroscopically guided bone biopsies were identified. There was bacterial growth in 28% of bone biopsies overall. The rate of positive culture was decreased in patients started on empiric antibiotics before biopsy (23%) compare with patients without empiric antibiotics (44%). Antibiotic regimens were changed in 24% of patients overall in response to culture data. The majority of positive biopsy cultures (76%) but minority of negative biopsy cultures (3%) resulted in a change to antibiotic regimens. The impact of percutaneous bone biopsy on antibiotic management of adult patients with osteomyelitis diagnosed by magnetic resonance imaging is modest and is decreased in patients previously started on antibiotics. Despite its modest impact, bone biopsy results can provide useful information in antibiotic management, especially when positive (Journal of Surgical Orthopaedic Advances 27(4):277-280, 2018).
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Affiliation(s)
- Joseph G Mammarappallil
- Duke University Hospital, Durham, North Carolina; Wake Forest Baptist Health, Winston-Salem, North Carolina
| | | | - Leon Lenchik
- Wake Forest Baptist Health, Winston-Salem, North Carolina
| | | | - Johannes F Plate
- Wake Forest Baptist Health, Winston-Salem, North Carolina; e-mail:
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Saint-Pastou Terrier C, Gasque P. Bone responses in health and infectious diseases: A focus on osteoblasts. J Infect 2017; 75:281-292. [PMID: 28778751 DOI: 10.1016/j.jinf.2017.07.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [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: 03/10/2017] [Revised: 07/13/2017] [Accepted: 07/26/2017] [Indexed: 12/16/2022]
Abstract
Historically, bone was thought to be immunologically inactive with the sole function of supporting locomotion and ensuring stromaness functions as a major lymphoid organ. However, a myriad of pathogens (bacteria such as staphylococcus as well as viruses including alphaviruses, HIV or HCV) can invade the bone. These pathogens can cause apoptosis, autophagy and necrosis of osteoblasts and lead to lymphopenia and immune paralysis. There are now several detailed studies on how osteoblasts contribute to innate immune and inflammatory responses; indeed, osteoblasts in concert with resident macrophages can engage an armory of defense mechanisms capable of detecting and controlling pathogen evasion mechanisms. Osteoblasts can express the so-called pattern recognition receptors such as TOLL-like receptors involved in the detection for example of lipids and unique sugars (polysaccharides and polyriboses) expressed by bacteria or viruses (e.g. LPS and RNA respectively). Activated osteoblasts can produce interferon type I, cytokines, chemokines and interferon-stimulated proteins through autocrine and paracrine mechanisms to control for viral replication and to promote phagocytosis or lysis of bacteria for example by defensins. Uncontrolled and sustained innate immune activation of infected osteoblasts will also lead to an imbalance in the production of osteoclastogenic factors such as RANKL and osteoprotegerin involved in bone repair.
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Affiliation(s)
- Cécile Saint-Pastou Terrier
- Université de La Réunion, CNRS 9192, INSERM U1187, IRD 249, Unité Mixte Processus Infectieux en Milieu Insulaire Tropical (PIMIT), Plateforme Technologique CYROI, Sainte-Clotilde, La Réunion, France
| | - Philippe Gasque
- Université de La Réunion, CNRS 9192, INSERM U1187, IRD 249, Unité Mixte Processus Infectieux en Milieu Insulaire Tropical (PIMIT), Plateforme Technologique CYROI, Sainte-Clotilde, La Réunion, France; Laboratoire de Biologie, secteur Laboratoire d'immunologie clinique et expérimentale ZOI (LICE OI), CHU La Réunion site Félix Guyon, St Denis, La Réunion, France.
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Philips A, Stolarek I, Kuczkowska B, Juras A, Handschuh L, Piontek J, Kozlowski P, Figlerowicz M. Comprehensive analysis of microorganisms accompanying human archaeological remains. Gigascience 2017; 6:1-13. [PMID: 28609785 PMCID: PMC5965364 DOI: 10.1093/gigascience/gix044] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 05/09/2017] [Accepted: 06/11/2017] [Indexed: 02/01/2023] Open
Abstract
Metagenome analysis has become a common source of information about microbial communities that occupy a wide range of niches, including archaeological specimens. It has been shown that the vast majority of DNA extracted from ancient samples come from bacteria (presumably modern contaminants). However, characterization of microbial DNA accompanying human remains has never been done systematically for a wide range of different samples. We used metagenomic approaches to perform comparative analyses of microorganism communities present in 161 archaeological human remains. DNA samples were isolated from the teeth of human skeletons dated from 100 AD to 1200 AD. The skeletons were collected from 7 archaeological sites in Central Europe and stored under different conditions. The majority of identified microbes were ubiquitous environmental bacteria that most likely contaminated the host remains not long ago. We observed that the composition of microbial communities was sample-specific and not correlated with its temporal or geographical origin. Additionally, traces of bacteria and archaea typical for human oral/gut flora, as well as potential pathogens, were identified in two-thirds of the samples. The genetic material of human-related species, in contrast to the environmental species that accounted for the majority of identified bacteria, displayed DNA damage patterns comparable with endogenous human ancient DNA, which suggested that these microbes might have accompanied the individual before death. Our study showed that the microbiome observed in an individual sample is not reliant on the method or duration of sample storage. Moreover, shallow sequencing of DNA extracted from ancient specimens and subsequent bioinformatics analysis allowed both the identification of ancient microbial species, including potential pathogens, and their differentiation from contemporary species that colonized human remains more recently.
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Affiliation(s)
- Anna Philips
- European Center for Bioinformatics and Genomics, Institute of Bioorganic
Chemistry, Polish Academy of Sciences, Poznan, 61-704, Poland
| | - Ireneusz Stolarek
- European Center for Bioinformatics and Genomics, Institute of Bioorganic
Chemistry, Polish Academy of Sciences, Poznan, 61-704, Poland
| | - Bogna Kuczkowska
- European Center for Bioinformatics and Genomics, Institute of Bioorganic
Chemistry, Polish Academy of Sciences, Poznan, 61-704, Poland
| | - Anna Juras
- Department of Human Evolutionary Biology, Institute of Anthropology, Faculty
of Biology, Adam Mickiewicz University in Poznan, Poznan, 61-614, Poland
| | - Luiza Handschuh
- European Center for Bioinformatics and Genomics, Institute of Bioorganic
Chemistry, Polish Academy of Sciences, Poznan, 61-704, Poland
- Department of Hematology and Bone Marrow Transplantation, University of
Medical Sciences, Poznan, 60-569, Poland
- Institute of Technology and Chemical Engineering, Poznan University of
Technology, Poznan, 60-965, Poland
| | - Janusz Piontek
- Department of Human Evolutionary Biology, Institute of Anthropology, Faculty
of Biology, Adam Mickiewicz University in Poznan, Poznan, 61-614, Poland
| | - Piotr Kozlowski
- European Center for Bioinformatics and Genomics, Institute of Bioorganic
Chemistry, Polish Academy of Sciences, Poznan, 61-704, Poland
- Institute of Technology and Chemical Engineering, Poznan University of
Technology, Poznan, 60-965, Poland
| | - Marek Figlerowicz
- European Center for Bioinformatics and Genomics, Institute of Bioorganic
Chemistry, Polish Academy of Sciences, Poznan, 61-704, Poland
- Institute of Computing Science, Poznan University of Technology, Poznan,
60-965, Poland
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33
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McConnell J, Sekkides O. Highlights from the 27th ECCMID. Lancet Infect Dis 2017; 17:586-587. [PMID: 28555585 DOI: 10.1016/s1473-3099(17)30254-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
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D'Argenio V, Torino M, Precone V, Casaburi G, Esposito MV, Iaffaldano L, Malapelle U, Troncone G, Coto I, Cavalcanti P, De Rosa G, Salvatore F, Sacchetti L. The Cause of Death of a Child in the 18th Century Solved by Bone Microbiome Typing Using Laser Microdissection and Next Generation Sequencing. Int J Mol Sci 2017; 18:ijms18010109. [PMID: 28067829 PMCID: PMC5297743 DOI: 10.3390/ijms18010109] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 10/28/2016] [Revised: 12/29/2016] [Accepted: 01/03/2017] [Indexed: 01/13/2023] Open
Abstract
The history of medicine abounds in cases of mysterious deaths, especially by infectious diseases, which were probably unresolved because of the lack of knowledge and of appropriate technology. The aim of this study was to exploit contemporary technologies to try to identify the cause of death of a young boy who died from a putative “infection” at the end of the 18th century, and for whom an extraordinarily well-preserved minute bone fragment was available. After confirming the nature of the sample, we used laser microdissection to select the most “informative” area to be examined. Tissue genotyping indicated male gender, thereby confirming the notary’s report. 16S ribosomal RNA sequencing showed that Proteobacteria and Actinobacteria were more abundant than Firmicutes and Bacteroidetes, and that Pseudomonas was the most abundant bacterial genus in the Pseudomonadaceae family. These data suggest that the patient most likely died from Pseudomonas osteomyelitis. This case is an example of how new technological approaches, like laser microdissection and next-generation sequencing, can resolve ancient cases of uncertain etiopathology. Lastly, medical samples may contain a wealth of information that may not be accessible until more sophisticated technology becomes available. Therefore, one may envisage the possibility of systematically storing medical samples for evaluation by future generations.
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Affiliation(s)
- Valeria D'Argenio
- CEINGE-Biotecnologie Avanzate, via G. Salvatore 486, 80145 Naples, Italy.
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples Federico II, via Pansini 5, 80131 Naples, Italy.
| | - Marielva Torino
- Department of Paleopathology, University of Naples Suor Orsola Benincasa, via Suor Orsola 10, 80125 Naples, Italy.
| | - Vincenza Precone
- CEINGE-Biotecnologie Avanzate, via G. Salvatore 486, 80145 Naples, Italy.
| | - Giorgio Casaburi
- CEINGE-Biotecnologie Avanzate, via G. Salvatore 486, 80145 Naples, Italy.
| | | | - Laura Iaffaldano
- CEINGE-Biotecnologie Avanzate, via G. Salvatore 486, 80145 Naples, Italy.
| | - Umberto Malapelle
- Department of Public Health, University of Naples Federico II, Naples, via Pansini 5, 80131 Naples, Italy.
| | - Giancarlo Troncone
- Department of Public Health, University of Naples Federico II, Naples, via Pansini 5, 80131 Naples, Italy.
| | - Iolanda Coto
- CEINGE-Biotecnologie Avanzate, via G. Salvatore 486, 80145 Naples, Italy.
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples Federico II, via Pansini 5, 80131 Naples, Italy.
| | - Paolina Cavalcanti
- Microbiology Unit, Hospital of Cosenza, via San Martino, 87100 Cosenza, Italy.
| | - Gaetano De Rosa
- Department of Advanced Biomedical Sciences, University of Naples Federico II, via Pansini 5, 80131 Naples, Italy.
| | - Francesco Salvatore
- CEINGE-Biotecnologie Avanzate, via G. Salvatore 486, 80145 Naples, Italy.
- IRCCS (Istituto di Ricovero e Cura a Carattere Scientifico)-Fondazione SDN, via Gianturco 113, 80143 Naples, Italy.
| | - Lucia Sacchetti
- CEINGE-Biotecnologie Avanzate, via G. Salvatore 486, 80145 Naples, Italy.
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Soomro S, Siddiqi MA, Taufiq I. Diagnostic value of sinus tract culture versus intraoperative bone culture in patients with chronic osteomyelitis. J PAK MED ASSOC 2016; 66(Suppl 3):S109-S111. [PMID: 27895372] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
To compare the organisms isolated from the sinus tract culture and intraoperative bone culture in patients with chronic osteomyelitis. This cross sectional prospective study was conducted from February 2015 to March 2016. Ninety consecutive patients were enrolled in study (n=90). Inclusion criteria were patients with either sex, any age, chronic osteomyelitis having discharging sinus. Sample from sinus tracts and bone were taken through standardized aseptic technique and organism were cultured. There were 62 males and 28 females, male to female ratio 3:1, mean age was 40 years. 23 patients had primary osteomyelitis and 67 had secondary osteomyelitis. 68 patients had orthopaedic implant infections. In 61/90 (67%) patients the same organism was isolated on both sinus tract and intraoperative cultures.In our scenario we found that within the limitations of this study, there was a high ratio of agreement between the sinus tract and intraoperative cultures. We conclude that if used judiciously, sinus tract cultures can yield accurate results in the majority of cases.
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Affiliation(s)
- Saifullah Soomro
- Orthopaedic Surgery, Liaquat National Hospital and Medical College, Karachi
| | | | - Intikhab Taufiq
- Orthopaedic Surgery, Liaquat National Hospital and Medical College, Karachi
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Rosova LV, Godovykh NV. [The microbiological study of purulent focus of inflammation in patients with chronic osteomyelitis of long bones]. Klin Lab Diagn 2016; 61:727-730. [PMID: 30615348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The article presents analysis of results of microbiological study of pathologic samples from fistula and surgical wounds of 155 patients with chronic osteomyelitis of long bones in the period of exacerbation of disease during 2014-2015. In totality, 126 samples from fistula and 95 samples from wounds were analyzed. Correspondingly, 164 and 102 strains of bacteria were separated. The microbial contamination of fistula and wounds was established. The species composition of microflora was analyzed. It is established that in the analyzed groups the main agent still continues to be staphylococcus and priority pathogen Staphylococcus aureus differing slightly in rate of occurrence and coefficient of resistance. MRSA was separated up to 5.6% more often from surgical wounds than from fistula. The highest detection rate of strains S. aureus and MRSA falls on 2009-2010. In 2015, the lowest detection rate of S. aureus was marked with relatively high rate of detection of MRSA. The disk diffusion D-test was applied to determine resistance of inducible type to Clindamycin of 17 strains of S. aureus resistant to Erythromycin and sensitive to Clindamycin. The inducible resistance to Clindamycin for strains from surgery pounds made up to 62.5% that is three times higher than in case of strains separated from fistula. The important role in development of chronic of osteomyelitis of long bones is played by Gram-negative microorganisms (E. coli, Enterobacter, P. aeruginosa, etc.). The rate of detection of these microorganisms in surgery wounds makes up to 22.5% and 17.1% in fistula.
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Lallemand E, Arvieux C, Coiffier G, Polard JL, Albert JD, Guggenbuhl P, Jolivet-Gougeon A. Use of MALDI-TOF mass spectrometry after liquid enrichment (BD Bactec™) for rapid diagnosis of bone and joint infections. Res Microbiol 2016; 168:122-129. [PMID: 27677682 DOI: 10.1016/j.resmic.2016.09.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [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: 02/06/2016] [Revised: 08/19/2016] [Accepted: 09/16/2016] [Indexed: 11/17/2022]
Abstract
Advantages of MALDI-TOF MS (MS) were evaluated for diagnosis of bone and joint infections after enrichment of synovial fluid (SF) or crushed osteoarticular samples (CSs). MS was performed after enrichment of SF or crushed osteoarticular samples CS (n = 108) in both aerobic and anaerobic vials. Extraction was performed on 113 vials (SF: n = 47; CS: n = 66), using the Sepsityper® kit prior identification by MS. The performances of MS, score and reproducibility results on bacterial colonies from blood agar and on pellets after enrichment in vials, were compared. MS analysis of the vial resulted in correct identification of bacteria at a species and genus level (80.5% and 92% of cases, respectively). The reproducibility was superior for aerobic Gram-positive bacteria (Staphylococci and Gram-positive bacilli: 100% colonies), as compared to aerobic Gram-negative bacilli (89.7%), anaerobes (83.3%) and Streptococcus/Enterococcus (58.8%). MS performance was significantly better for staphylococci than for streptococci on all identification parameters. For polymicrobial cultures, identification (score>1.5) of two species by MS was acceptable in 92.8% of cases. Use of MS on enrichment pellets of bone samples is an accurate, rapid and robust method for bacterial identification of clinical isolates from osteoarticular infections, except for streptococci, whose identification to species level remains difficult.
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Affiliation(s)
- Elise Lallemand
- EA 1254 Microbiologie/INSERM NUMECAN, Université de Rennes 1, 2, avenue du Pr Léon Bernard, 35043 Rennes, France; Pole Biologie, Rennes University Hospital, 35043 Rennes, France
| | - Cédric Arvieux
- Service des Maladies Infectieuses, Rennes University Hospital, 2 rue Henri Le Guilloux, 35043 Rennes, France; Centre de Référence en Infections Ostéo-Articulaires du Grand Ouest (CRIOGO), France
| | - Guillaume Coiffier
- Centre de Référence en Infections Ostéo-Articulaires du Grand Ouest (CRIOGO), France; Service de Rhumatologie, Hôpital Sud, CHU, F-35000 Rennes, France; INSERM UMR U991/NUMECAN, F-35000 Rennes, France
| | - Jean-Louis Polard
- Centre de Référence en Infections Ostéo-Articulaires du Grand Ouest (CRIOGO), France; Service de Chirurgie orthopédique, Rennes University Hospital, 2 rue Henri Le Guilloux, 35043 Rennes, France
| | - Jean-David Albert
- Centre de Référence en Infections Ostéo-Articulaires du Grand Ouest (CRIOGO), France; Service de Rhumatologie, Hôpital Sud, CHU, F-35000 Rennes, France; INSERM UMR U991/NUMECAN, F-35000 Rennes, France
| | - Pascal Guggenbuhl
- Centre de Référence en Infections Ostéo-Articulaires du Grand Ouest (CRIOGO), France; Service de Rhumatologie, Hôpital Sud, CHU, F-35000 Rennes, France; INSERM UMR U991/NUMECAN, F-35000 Rennes, France; Université de Rennes 1, F-35000 Rennes, France
| | - Anne Jolivet-Gougeon
- EA 1254 Microbiologie/INSERM NUMECAN, Université de Rennes 1, 2, avenue du Pr Léon Bernard, 35043 Rennes, France; Pole Biologie, Rennes University Hospital, 35043 Rennes, France; Centre de Référence en Infections Ostéo-Articulaires du Grand Ouest (CRIOGO), France; Université de Rennes 1, F-35000 Rennes, France.
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Kvich L, Jensen PØ, Justesen US, Bjarnsholt T. Incidence of Propionibacterium acnes in initially culture-negative thioglycollate broths-a prospective cohort study at a Danish University Hospital. Clin Microbiol Infect 2016; 22:941-945. [PMID: 27521804 DOI: 10.1016/j.cmi.2016.07.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 07/08/2016] [Accepted: 07/31/2016] [Indexed: 11/19/2022]
Abstract
The aim of this study was to prospectively investigate the incidence of Propionibacterium acnes in thioglycollate broths reported as culture-negative at the Department of Clinical Microbiology, Rigshospitalet, to evaluate whether 5 days of incubation was enough to find all relevant cases. Five hundred thioglycollate broths reported as culture-negative after 5 days were consecutively collected and incubated for at least a further 9 days (at least 14 days of incubation in total). Only tissue samples from sterile sites of the body (n = 298), bone tissue (n = 197) and foreign material (n = 5) were included in this study. Samples were divided into two groups: infected group and control group. This made it possible to compare findings between groups, thereby making it possible to estimate the level of true-positive findings and contamination. Samples from 296 participants were included in this study. After exclusion criteria were met, P. acnes was cultured from ten out of 151 patients (6.6%) in the infected group and from one out of 138 participants (0.7%) in the control group. This resulted in more findings of P. acnes in the infected group on day 14 than on day 5 (p 0.002). Furthermore, P. acnes was cultured more often from bone tissue and tissue surrounding foreign materials on day 14 than on day 5 (p 0.04). Clinical microbiology laboratories should consider incubating thioglycollate broths for at least 14 days to find all relevant cases of P. acnes, especially when it comes to bone tissue and tissue surrounding foreign materials.
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Affiliation(s)
- L Kvich
- Department of Clinical Microbiology, Copenhagen University Hospital-Rigshospitalet, Denmark
| | - P Ø Jensen
- Department of Clinical Microbiology, Copenhagen University Hospital-Rigshospitalet, Denmark
| | - U S Justesen
- Department of Clinical Microbiology, Copenhagen University Hospital-Rigshospitalet, Denmark
| | - T Bjarnsholt
- Department of Clinical Microbiology, Copenhagen University Hospital-Rigshospitalet, Denmark; Department of International Health, Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.
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Abstract
BACKGROUND Mucormycosis is a kind of rare opportunistic fungal disease and the incidence of which has gradually increased. Disseminated mucormycosis (DM) is a life-threatening infection that mostly occurs in immunocompromised patients. The lung and brain are usually involved in disseminated mucormycosis, and other sites are scare. We report the first case of disseminated mucormycosis whose infection sites included lung, skin, liver, vertebra, and spinal cord that ensued after a right lung pneumonectomy in an immunocompetent patient. CASE PRESENTATION A 20-year-old female underwent a right lung pneumonectomy for "lung cancer" presented with an intermittent fever for two years. A computed tomography (CT) scan showed an enclosed outstanding mass in the right chest wall. The patient also suffered from lower limb numbness and weakness, difficulty walking, and dysuria. Medical examination showed superficial feeling of the abdominal wall was decreased from the T7 and T8 level; muscle strength for both lower limbs was decreased; muscle tension of both lower limbs was also diminished. A biopsy through the right chest wall mass and thoracic mass by fistula of chest wall showed broad nonseptate hyphae with right-angle branching, consistent with mucormycosis. With titration of amphotericin B and its lipid complex, the patient recovered. CONCLUSIONS Our case showed an unusual clinical presentation of disseminated mucormycosisin an immunocompetent patient.
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Affiliation(s)
- Qian Wang
- />Department of Infectious Diseases, The First Affiliated Hospital with Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029 Jiangsu China
| | - Bo Liu
- />Department of Infectious Diseases, The First Affiliated Hospital with Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029 Jiangsu China
- />Department of Infection Management, The First Affiliated Hospital with Nanjing Medical University, Nanjing, 210029 China
| | - Youde Yan
- />Department of Infectious Diseases, The First Affiliated Hospital with Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029 Jiangsu China
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Tabosa IM, Riet-Correa F, Nobre VMT, Azevedo EO, Reis-Júnior JL, Medeiros RMT. Outbreaks of Pythiosis in Two Flocks of Sheep in Northeastern Brazil. Vet Pathol 2016; 41:412-5. [PMID: 15232143 DOI: 10.1354/vp.41-4-412] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Two outbreaks of cutaneous pythiosis caused by Pythium insidiosum were diagnosed in two herds of crossbred hair wool sheep of different ages in the semiarid region of Northeastern Brazil. In one herd of 120 sheep, 40 were affected. The other outbreak affected six sheep out of 80. Local swellings with ulcerative lesions were observed in the limbs and abdominal and prescapular regions. Three sheep were necropsied. Two of them had lung metastasis characterized by multifocal nodules measuring 0.5–2 cm. In one animal, the prescapular lymph node was also affected. In another, the cutaneous lesion extended to the sesamoid bone. Microscopically, there were multifocal granulomas with intralesional P. insidiosum hyphae and Splendore-Hoeppli material surrounding the hyphae. The diagnosis was based on the histologic lesions, immunohisto-chemical identification, and culture of the etiologic agent. One sheep treated with potassium iodide recovered. Standing in swampy water for long periods in a warm aquatic environment seems to be the reason for the high prevalence of the disease.
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Affiliation(s)
- I M Tabosa
- Veterinary Faculty, Federal University of Campina Grande, Campus de Patos, Paraíba, Brazil.
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Rume FI, Affuso A, Serrecchia L, Rondinone V, Manzulli V, Campese E, Di Taranto P, Biswas PK, Ahsan CR, Yasmin M, Fasanella A, Hugh-Jones M. Genotype Analysis of Bacillus anthracis Strains Circulating in Bangladesh. PLoS One 2016; 11:e0153548. [PMID: 27082248 PMCID: PMC4833350 DOI: 10.1371/journal.pone.0153548] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 03/31/2016] [Indexed: 11/30/2022] Open
Abstract
In Bangladesh, anthrax, caused by the bacterium Bacillus anthracis, is considered an endemic disease affecting ruminants with sporadic zoonotic occurrences in humans. Due to the lack of knowledge about risks from an incorrect removal of infected carcasses, the disease is not properly monitored, and because of the socio-economic conditions, the situation is under-reported and under-diagnosed. For sensitive species, anthrax represents a fatal outcome with sudden death and sometimes bleeding from natural orifices. The most common source of infection for ruminants is ingestion of spores during grazing in contaminated pastures or through grass and water contaminated with anthrax spores. Domestic cattle, sheep and goats can also become infected through contaminated bone meal (used as feed) originating from anthrax-infected carcasses. The present investigation was conducted to isolate B. anthracis organisms from 169 samples (73 soil, 1 tissue, 4 bone and 91 bone meal samples) collected from 12 different districts of Bangladesh. The sampling was carried out from 2012 to 2015. Twelve samples resulted positive for B. anthracis. Biomolecular analyses were conducted starting from the Canonical Single Nucleotide Polymorphism (CanSNP) to analyze the phylogenetic origin of strains. The analysis of genotype, obtained through the Multiple Locus Variable Number Tandem Repeat Analysis (MLVA) with the analysis of 15 Variable Number Tandem Repeats (VNTR), demonstrated four different genotypes: two of them were previously identified in the district of Sirajganj. The sub-genotyping, conducted with Single Nucleotide Repeats analysis, revealed the presence of eight subgenotypes. The data of the present study concluded that there was no observed correlation between imported cattle feed and anthrax occurrence in Bangladesh and that the remarkable genetic variations of B. anthracis were found in the soil of numerous outbreaks in this country.
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Affiliation(s)
- Farzana Islam Rume
- Department of Microbiology, Dhaka University. Dhaka, Bangladesh
- Department of Microbiology & Virology, Patuakhali Science and Technology University, Patuakhali, Bangladesh
| | - Alessia Affuso
- Istituto Zooprofilattico Sperimentale of Puglia and Basilicata, Anthrax Reference Institute of Italy, Foggia, Italy
- * E-mail:
| | - Luigina Serrecchia
- Istituto Zooprofilattico Sperimentale of Puglia and Basilicata, Anthrax Reference Institute of Italy, Foggia, Italy
| | - Valeria Rondinone
- Istituto Zooprofilattico Sperimentale of Puglia and Basilicata, Anthrax Reference Institute of Italy, Foggia, Italy
| | - Viviana Manzulli
- Istituto Zooprofilattico Sperimentale of Puglia and Basilicata, Anthrax Reference Institute of Italy, Foggia, Italy
| | - Emanuele Campese
- Istituto Zooprofilattico Sperimentale of Puglia and Basilicata, Anthrax Reference Institute of Italy, Foggia, Italy
| | - Pietro Di Taranto
- Istituto Zooprofilattico Sperimentale of Puglia and Basilicata, Anthrax Reference Institute of Italy, Foggia, Italy
| | - Paritosh Kumar Biswas
- Department of Microbiology & Veterinary Public Health, Chittagong Veterinary and Animal Sciences University, Chittagong, Bangladesh
| | | | - Mahmuda Yasmin
- Department of Microbiology, Dhaka University. Dhaka, Bangladesh
| | - Antonio Fasanella
- Istituto Zooprofilattico Sperimentale of Puglia and Basilicata, Anthrax Reference Institute of Italy, Foggia, Italy
| | - Martin Hugh-Jones
- School of the Coast & Environment, Louisiana State University, Baton Rouge, United States of America
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Lu H, Liu Y, Guo J, Wu H, Wang J, Wu G. Biomaterials with Antibacterial and Osteoinductive Properties to Repair Infected Bone Defects. Int J Mol Sci 2016; 17:334. [PMID: 26950123 PMCID: PMC4813196 DOI: 10.3390/ijms17030334] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [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: 02/12/2016] [Revised: 02/23/2016] [Accepted: 02/29/2016] [Indexed: 12/16/2022] Open
Abstract
The repair of infected bone defects is still challenging in the fields of orthopedics, oral implantology and maxillofacial surgery. In these cases, the self-healing capacity of bone tissue can be significantly compromised by the large size of bone defects and the potential/active bacterial activity. Infected bone defects are conventionally treated by a systemic/local administration of antibiotics to control infection and a subsequent implantation of bone grafts, such as autografts and allografts. However, these treatment options are time-consuming and usually yield less optimal efficacy. To approach these problems, novel biomaterials with both antibacterial and osteoinductive properties have been developed. The antibacterial property can be conferred by antibiotics and other novel antibacterial biomaterials, such as silver nanoparticles. Bone morphogenetic proteins are used to functionalize the biomaterials with a potent osteoinductive property. By manipulating the carrying modes and release kinetics, these biomaterials are optimized to maximize their antibacterial and osteoinductive functions with minimized cytotoxicity. The findings, in the past decade, have shown a very promising application potential of the novel biomaterials with the dual functions in treating infected bone defects. In this review, we will summarize the current knowledge of novel biomaterials with both antibacterial and osteoinductive properties.
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Affiliation(s)
- Haiping Lu
- School of Stomatology, Zhejiang Chinese Medical University, Hangzhou 310053, China.
| | - Yi Liu
- Department of Oral Implantology and Prosthetic Dentistry, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, MOVE Research Institute, Amsterdam 1081LA, The Netherlands.
| | - Jing Guo
- School of Stomatology, Zhejiang Chinese Medical University, Hangzhou 310053, China.
| | - Huiling Wu
- The First Affiliated Hospital, Medical School, Zhejiang University, Hangzhou 310003, China.
| | - Jingxiao Wang
- The First Affiliated Hospital, Wenzhou Medical University, Wenzhou 325000, China.
| | - Gang Wu
- Department of Oral Implantology and Prosthetic Dentistry, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, MOVE Research Institute, Amsterdam 1081LA, The Netherlands.
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Schweitzer MH, Moyer AE, Zheng W. Testing the Hypothesis of Biofilm as a Source for Soft Tissue and Cell-Like Structures Preserved in Dinosaur Bone. PLoS One 2016; 11:e0150238. [PMID: 26926069 PMCID: PMC4771714 DOI: 10.1371/journal.pone.0150238] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 02/11/2016] [Indexed: 12/04/2022] Open
Abstract
Recovery of still-soft tissue structures, including blood vessels and osteocytes, from dinosaur bone after demineralization was reported in 2005 and in subsequent publications. Despite multiple lines of evidence supporting an endogenous source, it was proposed that these structures arose from contamination from biofilm-forming organisms. To test the hypothesis that soft tissue structures result from microbial invasion of the fossil bone, we used two different biofilm-forming microorganisms to inoculate modern bone fragments from which organic components had been removed. We show fundamental morphological, chemical and textural differences between the resultant biofilm structures and those derived from dinosaur bone. The data do not support the hypothesis that biofilm-forming microorganisms are the source of these structures.
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Affiliation(s)
- Mary Higby Schweitzer
- Department of Biological Science, North Carolina State University, Raleigh, North Carolina, United States of America
- North Carolina Museum of Natural Sciences, Raleigh, North Carolina, United States of America
| | - Alison E. Moyer
- Department of Biological Science, North Carolina State University, Raleigh, North Carolina, United States of America
| | - Wenxia Zheng
- Department of Biological Science, North Carolina State University, Raleigh, North Carolina, United States of America
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Owocki K, Kremer B, Wrzosek B, Królikowska A, Kaźmierczak J. Fungal Ferromanganese Mineralisation in Cretaceous Dinosaur Bones from the Gobi Desert, Mongolia. PLoS One 2016; 11:e0146293. [PMID: 26863014 PMCID: PMC4749326 DOI: 10.1371/journal.pone.0146293] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 12/15/2015] [Indexed: 11/19/2022] Open
Abstract
Well-preserved mycelia of fungal- or saprolegnia-like biota mineralised by ferromanganese oxides were found for the first time in long bones of Late Cretaceous dinosaurs from the Gobi Desert (Nemegt Valley, Mongolia). The mycelia formed a biofilm on the wall of the bone marrow cavity and penetrated the osteon channels of the nearby bone tissue. Optical microscopy, Raman, SEM/EDS, SEM/BSE, electron microprobe and cathodoluminescence analyses revealed that the mineralisation of the mycelia proceeded in two stages. The first stage was early post-mortem mineralisation of the hyphae by Fe/Mn-oxide coatings and microconcretions. Probably this proceeded in a mildly acidic to circumneutral environment, predominantly due to heterotrophic bacteria degrading the mycelial necromass and liberating Fe and Mn sorbed by the mycelia during its lifetime. The second stage of mineralisation, which proceeded much later following the final burial of the bones in an alkaline environment, resulted from the massive precipitation of calcite and occasionally barite on the iron/manganese-oxide-coated mycelia. The mineral phases produced by fungal biofilms colonising the interiors of decaying dinosaur bones not only enhance the preservation (fossilisation) of fungal remains but can also be used as indicators of the geochemistry of the dinosaur burial sites.
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Affiliation(s)
- Krzysztof Owocki
- Institute of Paleobiology, Polish Academy of Sciences, Warsaw, Poland
- * E-mail:
| | - Barbara Kremer
- Institute of Paleobiology, Polish Academy of Sciences, Warsaw, Poland
| | - Beata Wrzosek
- Faculty of Chemistry, Warsaw University, Warsaw, Poland
| | | | - Józef Kaźmierczak
- Institute of Paleobiology, Polish Academy of Sciences, Warsaw, Poland
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Abstract
Diagnosing the presence of infection in the foot of a patient with diabetes can sometimes be a difficult task. Because open wounds are always colonized with microorganisms, most agree that infection should be diagnosed by the presence of systemic or local signs of inflammation. Determining whether or not infection is present in bone can be especially difficult. Diagnosis begins with a history and physical examination in which both classic and 'secondary' findings suggesting invasion of microorganisms or a host response are sought. Serological tests may be helpful, especially measurement of the erythrocyte sedimentation rate in osteomyelitis, but all (including bone biomarkers and procalcitonin) are relatively non-specific. Cultures of properly obtained soft tissue and bone specimens can diagnose and define the causative pathogens in diabetic foot infections. Newer molecular microbial techniques, which may not only identify more organisms but also virulence factors and antibiotic resistance, look very promising. Imaging tests generally begin with plain X-rays; when these are inconclusive or when more detail of bone or soft tissue abnormalities is required, more advanced studies are needed. Among these, magnetic resonance imaging is generally superior to standard radionuclide studies, but newer hybrid imaging techniques (single-photon emission computed tomography/computed tomography, positron emission tomography/computed tomography and positron emission tomography/magnetic resonance imaging) look to be useful techniques, and new radiopharmaceuticals are on the horizon. In some cases, ultrasonography, photographic and thermographic methods may also be diagnostically useful. Improved methods developed and tested over the past decade have clearly increased our accuracy in diagnosing diabetic foot infections.
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Affiliation(s)
- A W J M Glaudemans
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - I Uçkay
- Service of Infectious Diseases, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
- Orthopaedic Surgery Service, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
| | - B A Lipsky
- Service of Infectious Diseases, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
- Division of Medical Sciences, University of Oxford, Oxford, UK
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46
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Gaul JS, Winter E, Grossschmidt K. Ancient pathogens in museal dry bone specimens: analysis of paleocytology and aDNA. Wien Med Wochenschr 2015; 165:133-9. [PMID: 25994097 DOI: 10.1007/s10354-015-0357-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 04/16/2015] [Indexed: 11/29/2022]
Abstract
Bone samples investigated in this study derive from the pathologic-anatomical collection of the Natural History Museum of Vienna. In order to explore the survival of treponemes and treponemal ancient DNA in museal dry bone specimens, we analyzed three individuals known to have been infected with Treponema pallidum pallidum. No reproducible evidence of surviving pathogen's ancient DNA (aDNA) was obtained, despite the highly sensitive extraction and amplification techniques (TPP15 and arp). Additionally, decalcification fluid of bone sections was smear stained with May-Gruenwald-Giemsa. The slides were examined using direct light microscope and dark field illumination. Remnants of spirochetal structures were detectable in every smear. Our results demonstrate that aDNA is unlikely to survive, but spirochetal remains are stainable and thus detectable.
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Affiliation(s)
- Johanna Sophia Gaul
- Department of Anthropology, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria,
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47
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Lim PN, Chang L, Tay BY, Guneta V, Choong C, Ho B, Thian ES. Proposed mechanism of antibacterial action of chemically modified apatite for reduced bone infection. ACS Appl Mater Interfaces 2014; 6:17082-17092. [PMID: 25198775 DOI: 10.1021/am504716g] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Surface-bound silver ions were demonstrated to be responsible for the antibacterial action of silver, silicon-containing hydroxyapatite (Ag,Si-HA). X-ray photoelectron spectroscopy, transmission electron microscopy, and induced coupled plasma spectroscopy results suggested that silver ions in the crystal structure diffused toward the crystal surface of Ag,Si-HA, and interacted with adherent Staphylococcus aureus bacteria, thus damaging the cell wall and inducing leakage of potassium ions. All these steps constitute the mechanism of antibacterial action for Ag,Si-HA. Consequently, Ag,Si-HA gave rise to a 7-log reduction of the adherent bacteria as compared to HA and Si-HA at 168 h. Silicon in Ag,Si-HA helped to mitigate the reduced effect of bone differentiation in Ag-HA as shown in the alkaline phosphatase, type I collagen and osteocalcin results, promoting enhanced biological response, without compromising the antibacterial property. On the whole, Ag,Si-HA containing an optimized content of 0.5 wt % silver and 0.7 wt % silicon provides antibacterial properties and enhanced biological response.
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Affiliation(s)
- P N Lim
- Department of Mechanical Engineering, National University of Singapore , 9 Engineering Drive 1, Singapore 117 576, Singapore
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48
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Heidarkhan Tehrani A, Davari P, Singh S, Oloyede A. Sterilizing tissue-materials using pulsed power plasma. J Mater Sci Mater Med 2014; 25:953-964. [PMID: 24449024 DOI: 10.1007/s10856-014-5142-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2013] [Accepted: 01/09/2014] [Indexed: 06/03/2023]
Abstract
This paper investigates the potential of pulsed power to sterilize hard and soft tissues and its impact on their physico-mechanical properties. It hypothesizes that pulsed plasma can sterilize both vascular and avascular tissues and the transitive layers in between without deleterious effects on their functional characteristics. Cartilage/bone laminate was chosen as a model to demonstrate the concept, treated at low temperature, at atmospheric pressure, in short durations and in buffered environment using a purposed-built pulsed power unit. Input voltage and time of exposure were assigned as controlling parameters in a full factorial design of experiment to determine physical and mechanical alteration pre- and post-treatment. The results demonstrated that, discharges of 11 kV sterilized samples in 45 s, reducing intrinsic elastic modules from 1.4 ± 0.9 to 0.9 ± 0.6 MPa. There was a decrease of 14.1 % in stiffness and 27.8 % in elastic-strain energy for the top quartile. Mechanical impairment was directly proportional to input voltage (P value < 0.05). Bacterial inactivation was proportional to treatment time for input voltages above 32 V (P < 0.001; R Sq = 0.98). Thermal analysis revealed that helix-coil transition decelerated with exposure time and collagen fibrils were destabilized as denaturation enthalpy reduced by 200 μV. We concluded by presenting a safe operating threshold for pulsed power plasma as a feasible protocol for effective sterilization of connective tissues with varying level of loss in mechanical robustness which we argue to be acceptable in certain medical and tissue engineering application.
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Affiliation(s)
- Ashkan Heidarkhan Tehrani
- Biomechanics Group, School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD, 4000, Australia
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49
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Suzuki K, Saso A, Hoshino K, Sakurai J, Tanigawa K, Luo Y, Ishido Y, Mori S, Hirata K, Ishii N. Paleopathological evidence and detection of Mycobacterium leprae DNA from archaeological skeletal remains of Nabe-kaburi (head-covered with iron pots) burials in Japan. PLoS One 2014; 9:e88356. [PMID: 24516638 PMCID: PMC3917912 DOI: 10.1371/journal.pone.0088356] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Accepted: 01/11/2014] [Indexed: 11/18/2022] Open
Abstract
The Nabe-kaburi is a unique burial method, the purpose of which is shrouded in mystery. The burials were performed during the 15th to 18th centuries in eastern Japan, and involved covering the heads of the deceased with iron pots or mortars. The identification of leprosy-specific osteological lesions among some of the excavated remains has led to the suggestion that Nabe-kaburi burials were a reflection of the social stigma against certain infectious diseases, such as leprosy, tuberculosis or syphilis. However, molecular evidence for the presence of disease has been lacking. The goal of this study was to detect Mycobacterium leprae (M. leprae) DNA in archaeological human skeletal remains from Nabe-kaburi burials. The paleopathological data from three Nabe-kaburi burials were re-evaluated before small samples were taken from affected and control areas. DNA was extracted and used as a template to target the M. leprae-specific DNA using a combination of whole genome amplification, PCR analysis and DNA sequencing. M. leprae DNA fragments were detected in the two sets of skeletal remains that had also shown paleopathological evidence of leprosy. These findings provide definitive evidence that some of the Nabe-kaburi burials were performed for people affected by leprosy. Demonstration of the presence of M. leprae DNA, combined with archeological and anthropological examinations, will aid in solving the mystery of why Nabe-kaburi burials were performed in medieval Japan.
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Affiliation(s)
- Koichi Suzuki
- Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
- * E-mail:
| | - Aiko Saso
- The University Museum, The University of Tokyo, Tokyo, Japan
- Department of Biological Science, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Keigo Hoshino
- Department of Anatomy, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Junya Sakurai
- Faculty of Policy Management, Shobi University, Kawagoe, Japan
| | - Kazunari Tanigawa
- Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Yuqian Luo
- Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Yuko Ishido
- Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Shuichi Mori
- Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Kazuaki Hirata
- Department of Anatomy, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Norihisa Ishii
- Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
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50
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Nguyen H, Cassady AI, Bennett MB, Gineyts E, Wu A, Morgan DAF, Forwood MR. Reducing the radiation sterilization dose improves mechanical and biological quality while retaining sterility assurance levels of bone allografts. Bone 2013; 57:194-200. [PMID: 23912050 DOI: 10.1016/j.bone.2013.07.036] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [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] [Received: 06/24/2013] [Revised: 07/22/2013] [Accepted: 07/25/2013] [Indexed: 01/10/2023]
Abstract
BACKGROUND Bone allografts carry a risk of infection, so terminal sterilization by gamma irradiation at 25kGy is recommended; but is deleterious to bone quality. Contemporary bone banking significantly reduces initial allograft bioburden, questioning the need to sterilize at 25kGy. METHODS We inoculated allograft bone with Staphylococcus epidermidis and Bacillus pumilus, then exposed them to gamma irradiation at 0, 5, 10, 15, 20 and 25kGy. Mechanical and biological properties of allografts were also assessed. Our aim was to determine an optimal dose that achieves sterility assurance while minimizing deleterious effects on allograft tissue. RESULTS 20-25kGy eliminated both organisms at concentrations from 10(1) to 10(3)CFU, while 10-15kGy sterilized bone samples to a bioburden concentration of 10(2)CFU. Irradiation did not generate pro-inflammatory bone surfaces, as evidenced by macrophage activation, nor did it affect attachment or proliferation of osteoblasts. At doses ≥10kGy, the toughness of cortical bone was reduced (P<0.05), and attachment and fusion of osteoclasts onto irradiated bone declined at 20 and 25kGy (P<0.05). There was no change in collagen cross-links, but a significant dose-response increase in denatured collagen (P<0.05). CONCLUSIONS Our mechanical and cell biological data converge on 15kGy as a threshold for radiation sterilization of bone allografts. Between 5 and 15kGy, bone banks can undertake validation that provides allografts with an acceptable sterility assurance level, improving their strength and biocompatibility significantly. CLINICAL RELEVANCE The application of radiation sterilization doses between 5 and 15kGy will improve bone allograft mechanical performance and promote integration, while retaining sterility assurance levels. Improved quality of allograft bone will promote superior clinical outcomes.
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Affiliation(s)
- Huynh Nguyen
- Griffith Health Institute and School of Medical Science, Griffith University, Gold Coast, QLD 4222, Australia; Queensland Bone Bank, Organ and Tissue Donation Service, Queensland Health, Brisbane, QLD, Australia
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