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Zhang Z, Wu W, Xiahou Z, Song Y. Unveiling the hidden link between oral flora and colorectal cancer: a bidirectional Mendelian randomization analysis and meta-analysis. Front Microbiol 2024; 15:1451160. [PMID: 39318433 PMCID: PMC11420047 DOI: 10.3389/fmicb.2024.1451160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2024] [Accepted: 08/26/2024] [Indexed: 09/26/2024] Open
Abstract
Objective The impact of oral flora on intestinal micro-environment and related diseases has been widely reported, but its role in colorectal cancer (CRC) remains elusive. Methods A Two-sample Mendelian Randomization (TSMR) analysis was conducted to explore the causal relationship between oral flora and CRC, with the Inverse-Variance Weighted (IVW) serving as the primary method for evaluating this causal relationship. Data on the oral flora were derived from human samples from the tongue and saliva, with all cohort populations originating from Asia. In addition, 2 independent external cohorts were used to validate the positive results and perform a meta-analysis of the final results. Lastly, to balance the effect of positive oral flora on CRC, a Multivariate Mendelian Randomization (MVMR) analysis was also performed. Results The TSMR analysis revealed that 17 oral flora may have a causal relationship with CRC in the training cohort. Among them, s Haemophilus, g Fusobacterium, s Metamycoplasma salivarium, and s Mogibacterium pumilum were validated in two testing cohorts. Intriguingly, after integrating the results of the 3 cohorts for meta-analysis, 16 associations remained significant. In the training cohort, MVMR analysis demonstrated that s Capnocytophaga ochracea and s Metamycoplasma salivarium retained statistical significance. In one of the testing cohorts, s Metamycoplasma salivarium, s Streptococcus anginosus, and s Streptococcus sanguinis retained statistical significance. In the other testing cohort, s Metamycoplasma salivarium, s Haemophilus, and g Fusobacterium remained significant. Conclusion s Haemophilus, g Fusobacterium, s Metamycoplasma salivarium, and s Mogibacterium pumilum have a solid causal relationship with the occurrence and development of CRC.
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Affiliation(s)
- Zexin Zhang
- The Second Clinical School of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Wenfeng Wu
- The Second Clinical School of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhikai Xiahou
- China Institute of Sport and Health Science, Beijing Sport University, Beijing, China
| | - Yafeng Song
- China Institute of Sport and Health Science, Beijing Sport University, Beijing, China
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2
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Yakdan SM, Greenberg JK, Krishnaney AA, Mroz TE, Spiessberger A. Transcervical, retropharyngeal odontoidectomy - Anatomical considerations. JOURNAL OF CRANIOVERTEBRAL JUNCTION AND SPINE 2023; 14:393-398. [PMID: 38268697 PMCID: PMC10805156 DOI: 10.4103/jcvjs.jcvjs_112_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 09/19/2023] [Indexed: 01/26/2024] Open
Abstract
Context Anterior craniocervical junction lesions have always been a challenge for neurosurgeons. Presenting with lower cranial nerve dysfunction and symptoms of brainstem compression, decompression is often required. While posterior approaches offer indirect ventral brainstem decompression, direct decompression via odontoidectomy is necessary when they fail. The transoral and endoscopic endonasal approaches have been explored but come with their own limitations and risks. A novel retropharyngeal approach to the cervical spine has shown promising results with reduced complications. Aims This study aims to explore the feasibility and potential advantages of the anterior retropharyngeal approach for accessing the odontoid process. Methods and Surgical Technique To investigate the anatomical aspects of the anterior retropharyngeal approach, a paramedian skin incision was performed below the submandibular gland on two cadaveric specimens. The subcutaneous tissue followed by the platysma is dissected, and the superficial fascial layer is opened. The plane between the vascular sheath laterally and the pharyngeal structures medially is entered below the branching point of the facial vein and internal jugular vein. After reaching the prevertebral plane, further dissection cranially is done in a blunt fashion below the superior pharyngeal nerve and artery. Various anatomical aspects were highlighted during this approach. Results The anterior, submandibular retropharyngeal approach to the cervical spine was performed successfully on two cadavers highlighting relevant anatomical structures, including the carotid artery and the glossopharyngeal, hypoglossal, and vagus nerves. This approach offered wide exposure, avoidance of oropharyngeal contamination, and potential benefit in repairing cerebrospinal fluid fistulas. Conclusions For accessing the craniocervical junction, the anterior retropharyngeal approach is a viable technique that offers many advantages. However, when employing this approach, surgeons must have adequate anatomical knowledge and technical proficiency to ensure better outcomes. Further studies are needed to enhance our anatomical variations understanding and reduce intraoperative risks.
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Affiliation(s)
- Salim M. Yakdan
- Department of Neurological Surgery, Washington University, St. Louis, MO, USA
| | - Jacob K. Greenberg
- Department of Neurological Surgery, Washington University, St. Louis, MO, USA
| | - Ajit A. Krishnaney
- Center for Spine Health, Cleveland Clinic, Neurologic Institute, Cleveland, OH, USA
| | - Thomas E. Mroz
- Center for Spine Health, Cleveland Clinic, Neurologic Institute, Cleveland, OH, USA
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Forbes JA, Nebor I, Hussein A, Woodhouse C, Ceja DG, Avendano-Pradel R, Andaluz N, Sedaghat AR, Phillips K, Prestigiacomo C, Virojanapa J, Cheng J, Rosito DM, Zuccarello M. Roadmap to Ventral Craniocervical Junction Through the Endonasal Corridor: Anatomic Evaluation of Inverted U-Shaped Nasopharyngeal Flap Exposure in a Cadaveric Study. Oper Neurosurg (Hagerstown) 2022; 23:e2-e9. [PMID: 35486872 DOI: 10.1227/ons.0000000000000200] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 01/17/2022] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND There is a paucity of data in the literature describing quantitative exposure of the ventral craniocervical junction through the endonasal corridor in a safe manner mindful of locoregional anatomy. OBJECTIVE To quantify ventromedial exposure of O-C1 and C1-2 articular structures after turning an inverted U-shaped nasopharyngeal flap (IUNF) and to obtain measurements assessing the distance of flap margins to adjacent neurovascular structures. METHODS In 8 cadaveric specimens, an IUNF was fashioned using a superior incision below the level of the pharyngeal tubercule of the clivus and lateral incisions in the approximate region of Rosenmuller fossae bilaterally. Measurements with calipers and/or neuronavigation software included flap dimensions, exposure of O-C1 and C1-2 articular structures, inferior reach of IUNF, and proximity of the internal carotid artery (ICA) and hypoglossal nerve to IUNF margins. RESULTS The IUNF facilitated exposure of an average of 9 mm of the medial surfaces of the right/left O-C1 joints without transgression of the carotid arteries or hypoglossal nerves. The C1-2 articulation could not be routinely accessed. The margins of the IUNF were not in close (<5 mm) proximity to the ICA in any of the 8 specimens. In 6 of 8 specimens, the dimensions of the IUNF were in close (<5 mm) horizontal or vertical proximity to the hypoglossal foramina. CONCLUSION The IUNF provided safe and reliable access to the medial O-C1 articulation. Given the close proximity of the exocranial hypoglossal foramen, neuronavigation assistance and neuromonitoring with attention to the superolateral IUNF margin are recommended.
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Affiliation(s)
- Jonathan A Forbes
- Department of Neurological Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Ivanna Nebor
- Department of Neurological Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Ahmad Hussein
- Department of Neurological Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Cody Woodhouse
- Department of Neurological Surgery, Allegheny General Hospital, Pittsburgh, Pennsylvania, USA
| | - David Gallardo Ceja
- Department of Neurological Surgery, Centro Médico Nacional 20 de Noviembre, ISSSTE, Mexico City, Mexico
| | - Rafael Avendano-Pradel
- Department of Neurological Surgery, Centro Médico Nacional 20 de Noviembre, ISSSTE, Mexico City, Mexico
| | - Norberto Andaluz
- Department of Neurological Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Ahmad R Sedaghat
- Department of Otolaryngology-Head and Neck Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Katie Phillips
- Department of Otolaryngology-Head and Neck Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Charles Prestigiacomo
- Department of Neurological Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Justin Virojanapa
- Department of Neurological Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Joseph Cheng
- Department of Neurological Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Diego Mendez Rosito
- Department of Neurological Surgery, Centro Médico Nacional 20 de Noviembre, ISSSTE, Mexico City, Mexico
| | - Mario Zuccarello
- Department of Neurological Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
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Korkmaz H, Çetinkol Y, Korkmaz M, Çalgın MK, Kaşko Arıcı Y. Effect of Antibiotic Exposure on Upper Respiratory Tract Bacterial Flora. Med Sci Monit 2022; 28:e934931. [PMID: 34987147 PMCID: PMC8750656 DOI: 10.12659/msm.934931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Background The human microbiota modulates the immune system and forms the surface flora. Antibiotic administration causes dysbiosis in the intestinal flora. It is not clear if antibiotic administration in the community effects the upper airway flora in the mid-term or long-term. This study aims to define long-term influence of antibiotics on upper airway flora. Material/Methods In this prospective study, aerobic microbiological analysis of nasal and nasopharyngeal surfaces was performed. Antibiotic administration history of the last 6 months was retrieved using the social insurance database. Culture results of antibiotic-treated and antibiotic-naïve subjects were compared by Pearson’s chi-square test or Fisher’s exact test. Results A total of 210 subjects were included in the study. Normal flora were documented in 86 nasal swabs and 99 nasopharyngeal swabs. Most of the remaining cases demonstrated gram-positive bacterial overgrowth. There were 113 subjects who did not receive any antibiotic, and 93% of the remaining 97 patients received broad-spectrum antibiotics. Statistical analysis showed that nasal and nasopharyngeal flora did not change upon antibiotic administration, but antibiotic administration during the last month caused increased methicillin resistance development of coagulase-negative Staphylococcus and Staphylococcus aureus microorganisms. Conclusions Antibiotic exposure did not lead to perturbations in general composition of upper airway flora within 6 months, although the incidence of methicillin resistance in coagulase-positive and -negative Staphylococci demonstrated significant increases when patients received antibiotic during the last month. This should be considered in case of broad-spectrum antibiotic administration, since methicillin resistance increases the morbidity and mortality of nosocomial Staphylococcus infections.
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Affiliation(s)
- Hakan Korkmaz
- Department of Otorhinolaryngology, Ordu University Faculty of Medicine, Ordu, Turkey
| | - Yeliz Çetinkol
- Department of Medical Microbiology, Ordu University Faculty of Medicine, Ordu, Turkey
| | - Mukadder Korkmaz
- Department of Otorhinolaryngology, Private Practice, Ordu, Turkey
| | - Mustafa Kerem Çalgın
- Department of Medical Microbiology, Ordu University Faculty of Medicine, Ordu, Turkey
| | - Yeliz Kaşko Arıcı
- Department of Biostatistics and Medical Informatics, Ordu University Faculty of Medicine, Ordu, Turkey
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Pereira KD, Highstein MJ, Greenwell AG, Isaiah A, Valdez TA. Suppurative Thyroiditis: A Management Paradigm Based on Microbiology. Pediatr Emerg Care 2021; 37:e1416-e1418. [PMID: 33003129 DOI: 10.1097/pec.0000000000002062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE The aim of this study was to determine if microbiological cultures can guide management of suppurative thyroiditis. DESIGN This study is a retrospective case series set in 2 tertiary care academic hospitals. METHODS The microbiological cultures from patients with suppurative thyroiditis who underwent incision and drainage from July 2004 to June 2018 were reviewed. Those who had confirmed pyriform sinus tracts and underwent surgical intervention were included in the study. RESULTS Fifteen patients satisfied the criteria for inclusion. All had confirmed pyriform sinus tracts and underwent successful intervention. Endoscopic cautery was the most common intervention followed by complete open excision. Five cultures grew alpha Streptococcus, 6 had Eikenella, and 4 Prevotella. Combinations of Eikenella + Prevotella were seen in 3, and 1 sample had all 3 bacteria. Two cultured methicillin-susceptible Staphylococcus aureus alone. One culture was sterile. CONCLUSIONS The presence of oral flora in an intrathyroidal abscess is confirmatory evidence of a pyriform sinus tract. Further investigations are not needed, and early definitive intervention can be planned.
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Affiliation(s)
| | | | | | - Amal Isaiah
- From the University of Maryland School of Medicine
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Understanding the link between the oral microbiome and the development and progression of head and neck squamous cell carcinoma. CURRENT OPINION IN PHYSIOLOGY 2021. [DOI: 10.1016/j.cophys.2021.100471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Mokhtar M, Rismayuddin NAR, Mat Yassim AS, Ahmad H, Abdul Wahab R, Dashper S, Arzmi MH. Streptococcus salivarius K12 inhibits Candida albicans aggregation, biofilm formation and dimorphism. BIOFOULING 2021; 37:767-776. [PMID: 34425729 DOI: 10.1080/08927014.2021.1967334] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 07/29/2021] [Accepted: 08/06/2021] [Indexed: 06/13/2023]
Abstract
Candida albicans causes candidiasis, particularly in immunocompromised patients. Streptococcus salivarius K12 (K12) is a probiotic isolated from a healthy oral cavity. The study aimed to determine the effect of K12 on C. albicans aggregation, biofilm formation and dimorphism. C. albicans ATCC MYA-4901, acquired immunodeficiency syndrome (AIDS) isolate (ALC2), and oral cancer isolate (ALC3) and K12 were used in the study. All C. albicans strains and K12 were grown in yeast peptone dextrose agar and brain heart infusion agar, respectively, prior to aggregation, biofilm and dimorphism assays. Auto-aggregation of C. albicans MYA-4901 and ALC2 was categorised as high, while the co-aggregation of the strains was low in the presence of K12. C. albicans total cell count decreased significantly when co-cultured with K12 compared with monocultured C. albicans biofilm (p < 0.05). Inhibition of yeast-to-hyphae transition was also observed when co-cultured with K12. In conclusion, K12 inhibits C. albicans aggregation, biofilm formation and dimorphism.
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Affiliation(s)
- Munirah Mokhtar
- Department of Biomedical Sciences, Kulliyyah of Allied Health Sciences, International Islamic University Malaysia, Kuantan, Pahang, Malaysia
- Cluster of Cancer Research Initiative IIUM (COCRII), International Islamic University Malaysia, Kuantan, Pahang, Malaysia
| | - Nurul Alia Risma Rismayuddin
- Cluster of Cancer Research Initiative IIUM (COCRII), International Islamic University Malaysia, Kuantan, Pahang, Malaysia
| | - Aini Syahida Mat Yassim
- Cluster of Cancer Research Initiative IIUM (COCRII), International Islamic University Malaysia, Kuantan, Pahang, Malaysia
- Department of Fundamental Dental and Medical Sciences, Kulliyyah of Dentistry, International Islamic University Malaysia, Kuantan, Pahang, Malaysia
| | - Hasna Ahmad
- Department of Biomedical Sciences, Kulliyyah of Allied Health Sciences, International Islamic University Malaysia, Kuantan, Pahang, Malaysia
- Cluster of Cancer Research Initiative IIUM (COCRII), International Islamic University Malaysia, Kuantan, Pahang, Malaysia
| | - Ridhwan Abdul Wahab
- Department of Biomedical Sciences, Kulliyyah of Allied Health Sciences, International Islamic University Malaysia, Kuantan, Pahang, Malaysia
| | - Stuart Dashper
- Melbourne Dental School, The University of Melbourne, Melbourne, VIC, Australia
| | - Mohd Hafiz Arzmi
- Cluster of Cancer Research Initiative IIUM (COCRII), International Islamic University Malaysia, Kuantan, Pahang, Malaysia
- Department of Fundamental Dental and Medical Sciences, Kulliyyah of Dentistry, International Islamic University Malaysia, Kuantan, Pahang, Malaysia
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8
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Zhou K, Sun F, Xu XL, Hao XK, Liu JY. Prevalences and characteristics of cultivable nasal bacteria isolated from preclinical medical students. J Int Med Res 2021; 48:300060520961716. [PMID: 33103543 PMCID: PMC7607144 DOI: 10.1177/0300060520961716] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
OBJECTIVES Commensal bacteria in the nasal cavity may act as opportunistic pathogens that cause infections under certain conditions. Screening for commensal bacteria in the nasal cavity may aid in understanding their roles in microbiota balance and preventing potential infections. METHODS Nasal samples were collected from healthy preclinical medical students and used to inoculate various bacterial culture media, by means of the WaspLab microbiology automated system. Bacterial colonies were then identified by matrix-assisted laser desorption ionization-time of flight mass spectrometry. Antibiotic resistance phenotypes of Staphylococcus aureus were determined by antibiotic susceptibility tests. RESULTS In total, 549 bacterial strains were isolated from 161 participants. These strains included the following genera: Staphylococcus, Streptococcus, Corynebacterium, Dolosigranulum, Bacillus, Micrococcus, Haemophilus, Neisseria, Moraxella, Pseudomonas, and members of Enterobacteriaceae (e.g., Escherichia, Klebsiella, Citrobacter, Enterobacter, and Serratia). Approximately 25.5% of students were carriers of S. aureus; most S. aureus isolates were resistant to penicillin, erythromycin, and clindamycin. The prevalence of methicillin-resistant S. aureus in nasal samples was 4.3%. CONCLUSIONS A diverse group of nasal commensal bacteria inhabited our population of healthy volunteers. These data can improve comprehension of the potential roles of these nasal commensal bacteria in regulating microbiota balance and promoting or mitigating potential future infections.
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Affiliation(s)
- Ke Zhou
- Center of Clinical Laboratory Medicine of PLA, Department of Laboratory Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Fei Sun
- Department of Otolaryngology Head and Neck Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Xiu-Li Xu
- Center of Clinical Laboratory Medicine of PLA, Department of Laboratory Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Xiao-Ke Hao
- Center of Clinical Laboratory Medicine of PLA, Department of Laboratory Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Jia-Yun Liu
- Center of Clinical Laboratory Medicine of PLA, Department of Laboratory Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, China
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Huidrom S, Beg M. Dysbiosis of gut microbiota and human diseases. JOURNAL OF MAHATMA GANDHI INSTITUTE OF MEDICAL SCIENCES 2020. [DOI: 10.4103/jmgims.jmgims_59_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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10
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Oral Bacteria and Intestinal Dysbiosis in Colorectal Cancer. Int J Mol Sci 2019; 20:ijms20174146. [PMID: 31450675 PMCID: PMC6747549 DOI: 10.3390/ijms20174146] [Citation(s) in RCA: 134] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 08/19/2019] [Accepted: 08/23/2019] [Indexed: 02/07/2023] Open
Abstract
The human organism coexists with its microbiota in a symbiotic relationship. These polymicrobial communities are involved in many crucial functions, such as immunity, protection against pathogens, and metabolism of dietary compounds, thus maintaining homeostasis. The oral cavity and the colon, although distant anatomic regions, are both highly colonized by distinct microbiotas. However, studies indicate that oral bacteria are able to disseminate into the colon. This is mostly evident in conditions such as periodontitis, where specific bacteria, namely Fusobacterium nucrelatum and Porphyromonas gingivalis project a pathogenic profile. In the colon these bacteria can alter the composition of the residual microbiota, in the context of complex biofilms, resulting in intestinal dysbiosis. This orally-driven disruption promotes aberrant immune and inflammatory responses, eventually leading to colorectal cancer (CRC) tumorigenesis. Understanding the exact mechanisms of these interactions will yield future opportunities regarding prevention and treatment of CRC.
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Abstract
A wide variety of microorganisms are potential respiratory pathogens, and the spectrum of known pathogens for each respiratory infection syndrome has not changed markers over recent years. Detection of likely etiologic agents of respiratory infections can help direct management and can also play an important role in disease surveillance. For this purpose, we are still reliant on many traditional diagnostic tools that have been used for decades in order to determine the microbial etiology of respiratory infections. However, these tools have been increasingly supplemented by newer methods, particular molecular diagnostic techniques, which have enabled the more rapid detection of many pathogens that were previously difficult to detect. These advances have particularly lead to improvements in the ability to detect respiratory viruses and also other microorganisms that do not normally colonize the respiratory tract. Recognition of the existence of the lung microbiome has challenged the traditional views of pneumonia pathogenesis and may provide the opportunity for new diagnostic tools that are focused on more than just detection of specific known pathogens. Continued liaison between clinicians and laboratory staff is vital in order to facilitate the most cost-effective use of laboratory diagnostics.
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Herrera R, Rojas H, Estramian A, Gómez J, Ledesma JL, Pablo J, Pastore J. [Adult Grisel Syndrome and Cervical Skull instability. Transnasal endoscopic odontoidectomy and occipito-cervical fusion. Case report and literature review]. Surg Neurol Int 2018; 9:S8-S15. [PMID: 29430326 PMCID: PMC5799945 DOI: 10.4103/sni.sni_281_17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 08/03/2017] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Craniocervical junction pathology is infrequent in daily neurosurgical practice. In general, most of these lesions are of traumatic or rheumatic origin. Atlantoaxial instability of inflammatory origin (Grisel syndrome) is a rare entity of which only 16 adult cases have been reported in the literature. This pathology is characterized by the development of an osteolytic lesion at the level of the atlantoaxial joint after an infectious event, usually of the upper airways. CASE DESCRIPTION We present the case of a 76-year-old patient who attended our office for clinical symptoms of spinal instability secondary to an osteolytic lesion, with involvement of C1 and C2. The symptomatology began after an infectious respiratory process. A posterior cervical occiput fixation and an endoscopic transnasal odontoidectomy with anterior decompression were performed. The patient evolved with complete resolution of symptoms. The cultures were negative, and the pathological anatomy study concluded nonspecific inflammatory changes. CONCLUSION Until a few years ago, the only option to address this pathology was the transoral pathway with microsurgical technique. Nowadays, endoscopy offers many technical advantages. This is an option to be considered when planning approaches to craniocervical junction.
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Affiliation(s)
- Roberto Herrera
- Sanatorio Los Arroyos, Rosario, Santa Fé, Argentina
- Clínica Adventista Belgrano, CABA, Buenos Aires, Argentina
| | - Héctor Rojas
- Sanatorio Los Arroyos, Rosario, Santa Fé, Argentina
- Clínica Adventista Belgrano, CABA, Buenos Aires, Argentina
| | - Ariel Estramian
- Sanatorio Los Arroyos, Rosario, Santa Fé, Argentina
- Clínica Adventista Belgrano, CABA, Buenos Aires, Argentina
| | - Julieta Gómez
- Sanatorio Los Arroyos, Rosario, Santa Fé, Argentina
- Clínica Adventista Belgrano, CABA, Buenos Aires, Argentina
| | - José Luis Ledesma
- Sanatorio Los Arroyos, Rosario, Santa Fé, Argentina
- Clínica Adventista Belgrano, CABA, Buenos Aires, Argentina
| | - José Pablo
- Sanatorio Los Arroyos, Rosario, Santa Fé, Argentina
- Clínica Adventista Belgrano, CABA, Buenos Aires, Argentina
| | - Julián Pastore
- Sanatorio Los Arroyos, Rosario, Santa Fé, Argentina
- Clínica Adventista Belgrano, CABA, Buenos Aires, Argentina
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Lim Y, Totsika M, Morrison M, Punyadeera C. Oral Microbiome: A New Biomarker Reservoir for Oral and Oropharyngeal Cancers. Theranostics 2017; 7:4313-4321. [PMID: 29158828 PMCID: PMC5695015 DOI: 10.7150/thno.21804] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 08/23/2017] [Indexed: 12/29/2022] Open
Abstract
Current biomarkers (DNA, RNA and protein) for oral cavity and oropharyngeal cancers demonstrate biological variations between individuals, rendering them impractical for clinical translation. Whilst these biomarkers originate from the host, there is not much information in the literature about the influence of oral microbiota on cancer pathogenesis, especially in oral cancers. Oral microbiotas are known to participate in disease initiation and progression not only limited to the oral cavity, but also at other distant sites. Due to the close proximity of oral microbiota and oral cavity and oropharyngeal tumours, abundance changes in oral microbiota may provide useful information on tumourigenesis. This review aims to highlight information on the role of oral microbiota in oral cavity and oropharyngeal cancers. An in-depth analysis into the oral microbiota may provide a new avenue to diagnose and treat these patients.
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Affiliation(s)
- Yenkai Lim
- The School of Biomedical Sciences, Institute of Health and Biomedical Innovations, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Brisbane, QLD 4059, Australia
- The Translational Research Institute, 37 Kent Street, Woolloongabba, Brisbane, QLD, 4102, Australia
| | - Makrina Totsika
- The School of Biomedical Sciences, Institute of Health and Biomedical Innovations, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Brisbane, QLD 4059, Australia
| | - Mark Morrison
- The University of Queensland Diamantina Institute, The University of Queensland, Translational Research Institute, 37 Kent Street, Woolloongabba, Brisbane, QLD, 4102, Australia
| | - Chamindie Punyadeera
- The School of Biomedical Sciences, Institute of Health and Biomedical Innovations, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Brisbane, QLD 4059, Australia
- The Translational Research Institute, 37 Kent Street, Woolloongabba, Brisbane, QLD, 4102, Australia
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Lim Y, Totsika M, Morrison M, Punyadeera C. The saliva microbiome profiles are minimally affected by collection method or DNA extraction protocols. Sci Rep 2017; 7:8523. [PMID: 28819242 PMCID: PMC5561025 DOI: 10.1038/s41598-017-07885-3] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 07/06/2017] [Indexed: 12/14/2022] Open
Abstract
Saliva has attracted attention as a diagnostic fluid due to the association of oral microbiota with systemic diseases. However, the lack of standardised methods for saliva collection has led to the slow uptake of saliva in microbiome research. The aim of this study was to systematically evaluate the potential effects on salivary microbiome profiles using different methods of saliva collection, storage and gDNA extraction. Three types of saliva fractions were collected from healthy individuals with or without the gDNA stabilising buffer. Subsequently, three types of gDNA extraction methods were evaluated to determine the gDNA extraction efficiencies from saliva samples. The purity of total bacterial gDNA was evaluated using the ratio of human β-globin to bacterial 16S rRNA PCR while 16S rRNA gene amplicon sequencing was carried out to identify the bacterial profiles present in these samples. The quantity and quality of extracted gDNA were similar among all three gDNA extraction methods and there were no statistically significant differences in the bacterial profiles among different saliva fractions at the genus-level of taxonomic classification. In conclusion, saliva sampling, processing and gDNA preparation do not have major influence on microbiome profiles.
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Affiliation(s)
- Yenkai Lim
- The School of Biomedical Sciences, Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Brisbane, QLD, 4059, Australia
- Translational Research Institute, Woolloongabba, Brisbane, QLD, 4102, Australia
| | - Makrina Totsika
- The School of Biomedical Sciences, Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Brisbane, QLD, 4059, Australia
| | - Mark Morrison
- The University of Queensland Diamantina Institute, The University of Queensland, Translational Research Institute, Woolloongabba, Brisbane, QLD, 4102, Australia
| | - Chamindie Punyadeera
- The School of Biomedical Sciences, Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Brisbane, QLD, 4059, Australia.
- Translational Research Institute, Woolloongabba, Brisbane, QLD, 4102, Australia.
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Zwagerman NT, Tormenti MJ, Tempel ZJ, Wang EW, Snyderman CH, Fernandez-Miranda JC, Gardner PA. Endoscopic endonasal resection of the odontoid process: clinical outcomes in 34 adults. J Neurosurg 2017; 128:923-931. [PMID: 28498058 DOI: 10.3171/2016.11.jns16637] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Treatment of odontoid disease from a ventral corridor has consisted of a transoral approach. More recently, the endoscopic endonasal approach (EEA) has been used to access odontoid pathology. METHODS A retrospective review was conducted of patients who underwent an EEA for odontoid pathology from 2004 to 2013. During our analysis, the mean follow-up duration was 42.6 months (range 1-80 months). Patient outcomes, complications, and postoperative swallowing function were assessed either by clinic visit or phone contact. RESULTS Thirty-four patients underwent an EEA for symptomatic odontoid pathology. The most common pathology treated was basilar invagination (n = 17). Other pathologies included odontoid fractures, os odontoideum, and metastatic carcinoma. The mean patient age was 71.5 years. Thirty-one patients underwent a posterior fusion. All 34 patients experienced stability or improvement in symptoms and all had successful radiographic decompression. The overall complication rate was 76%. Nearly all of these complications were transient (86%) and the overall complication rate excluding mild transient dysphagia was only 44%. Twenty-one patients (62%) suffered from transient postoperative dysphagia: 15 cases were mild, transient subjective dysphagia (6 of whom had documented preoperative dysphagia), whereas 6 other patients required tube feedings for decreased oral intake, malnutrition, and dysphagia in the perioperative setting (5 of these patients had documented preoperative dysphagia). Sixteen patients had documented preoperative dysphagia and 6 of these had lower cranial nerve dysfunction. Postoperatively, 6 (37.5%) of 16 patients with preoperative dysphagia and 4 (67%) of 6 with lower cranial nerve dysfunction had significant dysphagia/respiratory complications. Eighteen patients had no documented preoperative dysphagia and only 2 had significant postoperative dysphagia/respiratory complications (11%). The rates of these complications in patients without preoperative dysphagia were lower than in those with any preoperative dysphagia (p = 0.07) and especially those with preexisting lower cranial neuropathies (p = 0.007). Dysphagia was also significantly more common in patients who underwent occipitocervical fixation (19/26, 73%) than in patients who underwent cervical fusion alone or no fusion (2/8, 25%; p = 0.02). All patients with perioperative dysphagia had improved at follow-up and all patients were tolerating oral diets. No patient suffered from velopalatal insufficiency. Two patients had intraoperative CSF leaks. One of these patients underwent a negative exploratory surgery for a questionable postoperative CSF leak. One patient developed infection in the resection bed requiring debridement and antibiotics. One patient died 8 days following surgery from an unknown cause. The 90-day perioperative mortality rate was 2.9%. CONCLUSIONS A completely EEA can be performed for compressive odontoid disease in all cases of neoplastic, degenerative, or invaginative atlantoaxial disease with satisfactory outcomes and low morbidity. Transient perioperative dysphagia and respiratory complications are common, usually as an exacerbation and reflection of underlying disease or occipitocervical fusion rather than the EEA, emphasizing the importance of avoiding transoral surgery.
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Affiliation(s)
| | | | | | - Eric W Wang
- 3Otolarynogology, University of Pittsburgh; and
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16
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Mikasa K, Aoki N, Aoki Y, Abe S, Iwata S, Ouchi K, Kasahara K, Kadota J, Kishida N, Kobayashi O, Sakata H, Seki M, Tsukada H, Tokue Y, Nakamura-Uchiyama F, Higa F, Maeda K, Yanagihara K, Yoshida K. JAID/JSC Guidelines for the Treatment of Respiratory Infectious Diseases: The Japanese Association for Infectious Diseases/Japanese Society of Chemotherapy - The JAID/JSC Guide to Clinical Management of Infectious Disease/Guideline-preparing Committee Respiratory Infectious Disease WG. J Infect Chemother 2016; 22:S1-S65. [PMID: 27317161 PMCID: PMC7128733 DOI: 10.1016/j.jiac.2015.12.019] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 12/14/2015] [Indexed: 12/22/2022]
Affiliation(s)
- Keiichi Mikasa
- Center for Infectious Diseases, Nara Medical University, Nara, Japan.
| | | | - Yosuke Aoki
- Department of International Medicine, Division of Infectious Diseases, Faculty of Medicine, Saga University, Saga, Japan
| | - Shuichi Abe
- Department of Infectious Diseases, Yamagata Prefectural Central Hospital, Yamagata, Japan
| | - Satoshi Iwata
- Department of Infectious Diseases, Keio University School of Medicine, Tokyo, Japan
| | - Kazunobu Ouchi
- Department of Pediatrics, Kawasaki Medical School, Okayama, Japan
| | - Kei Kasahara
- Center for Infectious Diseases, Nara Medical University, Nara, Japan
| | - Junichi Kadota
- Department of Respiratory Medicine and Infectious Diseases, Oita University Faculty of Medicine, Oita, Japan
| | | | | | - Hiroshi Sakata
- Department of Pediatrics, Asahikawa Kosei Hospital, Hokkaido, Japan
| | - Masahumi Seki
- Division of Respiratory Medicine and Infection Control, Tohoku Pharmaceutical University Hospital, Miyagi, Japan
| | - Hiroki Tsukada
- Department of Respiratory Medicine and Infectious Diseases, Niigata City General Hospital, Niigata, Japan
| | - Yutaka Tokue
- Infection Control and Prevention Center, Gunma University Hospital, Gunma, Japan
| | | | - Futoshi Higa
- Department of Respiratory Medicine, National Hospital Organization Okinawa National Hospital, Okinawa, Japan
| | - Koichi Maeda
- Center for Infectious Diseases, Nara Medical University, Nara, Japan
| | - Katsunori Yanagihara
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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A Study of the Infant Nasal Microbiome Development over the First Year of Life and in Relation to Their Primary Adult Caregivers Using cpn60 Universal Target (UT) as a Phylogenetic Marker. PLoS One 2016; 11:e0152493. [PMID: 27019455 PMCID: PMC4809513 DOI: 10.1371/journal.pone.0152493] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Accepted: 03/15/2016] [Indexed: 11/21/2022] Open
Abstract
Whereas the infant gut microbiome is the subject of intense study, relatively little is known regarding the nares microbiome in newborns and during early life. This study aimed to survey the typical composition and diversity of human anterior nare microflora for developing infants over time, and to explore how these correlate to their primary caregivers. Single nare swabs were collected at five time points over a one-year period for each subject from infant-caregiver pairs. Our study comprised of 50 infants (recruited at 2 weeks, post delivery) and their 50 primary caregivers. Applying the chaperonin-60 (cpn60) universal target (UT) amplicon as our molecular barcoding marker to census survey the microbial communities, we longitudinally surveyed infant nares microbiota at 5 time points over the course of the first year of life. The inter- and intra-subject diversity was catalogued and compared, both longitudinally and relative to their adult primary caregivers. Although within-subject variability over time and inter-subject variability were both observed, the assessment detected only one or two predominant genera for individual infant samples, belonging mainly to phyla Actinobacteria, Firmicutes, and Proteobacteria. Consistent with previously observed microbial population dynamics in other body sites, the diversity of nares microflora increased over the first year of life and infants showed differential operational taxonomic units (OTUs) relative to their matched primary caregiver. The collected evidence also support that both temporal and seasonal changes occur with respect to carriage of potentially pathogenic bacteria (PPBs), which may influence host predisposition to infection. This pilot study surveying paired infant/caregiver nare microbiomes provides novel longitudinal diversity information that is pertinent to better understanding nare microbiome development in infants.
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Machado AMD, Sommer MOA. Human intestinal cells modulate conjugational transfer of multidrug resistance plasmids between clinical Escherichia coli isolates. PLoS One 2014; 9:e100739. [PMID: 24955767 PMCID: PMC4067368 DOI: 10.1371/journal.pone.0100739] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Accepted: 05/30/2014] [Indexed: 12/29/2022] Open
Abstract
Bacterial conjugation in the human gut microbiota is believed to play a major role in the dissemination of antibiotic resistance genes and virulence plasmids. However, the modulation of bacterial conjugation by the human host remains poorly understood and there is a need for controlled systems to study this process. We established an in vitro co-culture system to study the interaction between human intestinal cells and bacteria. We show that the conjugation efficiency of a plasmid encoding an extended spectrum beta-lactamase is reduced when clinical isolates of Escherichia coli are co-cultured with human intestinal cells. We show that filtered media from co-cultures contain a factor that reduces conjugation efficiency. Protease treatment of the filtered media eliminates this inhibition of conjugation. This data suggests that a peptide or protein based factor is secreted on the apical side of the intestinal cells exposed to bacteria leading to a two-fold reduction in conjugation efficiency. These results show that human gut epithelial cells can modulate bacterial conjugation and may have relevance to gene exchange in the gut.
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Affiliation(s)
| | - Morten O. A. Sommer
- Department of Systems Biology, Technical University of Denmark, Lyngby, Denmark
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Hørsholm, Denmark
- * E-mail:
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Probiotics, prebiotics, and synbiotics: gut and beyond. Gastroenterol Res Pract 2012; 2012:872716. [PMID: 23049548 PMCID: PMC3459241 DOI: 10.1155/2012/872716] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Accepted: 07/20/2012] [Indexed: 12/14/2022] Open
Abstract
The human intestinal tract has been colonized by thousands of species of bacteria during the coevolution of man and microbes. Gut-borne microbes outnumber the total number of body tissue cells by a factor of ten. Recent metagenomic analysis of the human gut microbiota has revealed the presence of some 3.3 million genes, as compared to the mere 23 thousand genes present in the cells of the tissues in the entire human body. Evidence for various beneficial roles of the intestinal microbiota in human health and disease is expanding rapidly. Perturbation of the intestinal microbiota may lead to chronic diseases such as autoimmune diseases, colon cancers, gastric ulcers, cardiovascular disease, functional bowel diseases, and obesity. Restoration of the gut microbiota may be difficult to accomplish, but the use of probiotics has led to promising results in a large number of well-designed (clinical) studies. Microbiomics has spurred a dramatic increase in scientific, industrial, and public interest in probiotics and prebiotics as possible agents for gut microbiota management and control. Genomics and bioinformatics tools may allow us to establish mechanistic relationships among gut microbiota, health status, and the effects of drugs in the individual. This will hopefully provide perspectives for personalized gut microbiota management.
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20
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Paluzzi A, Gardner P, Fernandez-Miranda JC, Snyderman C. The expanding role of endoscopic skull base surgery. Br J Neurosurg 2012; 26:649-61. [DOI: 10.3109/02688697.2012.673649] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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21
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Zhang G, Chen R, Rudney JD. Streptococcus cristatus modulates the Fusobacterium nucleatum-induced epithelial interleukin-8 response through the nuclear factor-kappa B pathway. J Periodontal Res 2011; 46:558-67. [PMID: 21521225 DOI: 10.1111/j.1600-0765.2011.01373.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND AND OBJECTIVE We previously reported that the interleukin-8 (IL-8) response to Fusobacterum nucleatum was attenuated in the presence of Streptococcus cristatus. Here, we further examined the underlying mechanism(s) involved in the modulating effect of S. cristatus by looking specifically at its impact on the nuclear factor-kappa B (NF-κB) pathway under the toll-like receptor (TLR) signaling background. MATERIAL AND METHODS OKF6/TERT-2 and KB cells were co-cultured with F. nucleatum and S. cristatus, either alone or in combination. Secretion of IL-8 protein was measured by ELISA. The nuclear translocation of NF-κB was evaluated by confocal microscopy, while DNA-binding activity was quantified using TransAM™ ELISA kits. Western blot analysis was performed to determine whether the anti-inflammatory effect of S. cristatus is related to the modulation of the NF-κB inhibitory protein IκB-α. RESULTS Incubation with F. nucleatum significantly enhanced the nuclear translocation of NF-κB. Exposure to S. cristatus alone did not cause detectable NF-κB translocation and was able to inhibit the F. nucleatum-induced NF-κB nuclear translocation. The TransAM assay further confirmed that S. cristatus blocked the nuclear translocation of NF-κB in response to F. nucleatum stimulation. In contrast to the nearly complete degradation of IκB-α induced by F. nucleatum alone, the presence of S. cristatus stabilized IκB-α. Pre-incubation with TLR2 and TLR4 antibodies, however, did not affect the epithelial response to either species alone or in combination. CONCLUSION The mechanism by which S. cristatus attenuates F. nucleatum-induced proinflammatory responses in oral epithelial cells appears to involve blockade of NF-κB nuclear translocation at the level of IκB-α degradation.
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Affiliation(s)
- G Zhang
- Department of Diagnostic and Biological Sciences, School of Dentistry, University of Minnesota, Minneapolis, MN, USA
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22
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Kono Y, Prevedello DM, Snyderman CH, Gardner PA, Kassam AB, Carrau RL, Byers KE. One thousand endoscopic skull base surgical procedures demystifying the infection potential: incidence and description of postoperative meningitis and brain abscesses. Infect Control Hosp Epidemiol 2010; 32:77-83. [PMID: 21121816 DOI: 10.1086/657635] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Endonasal endoscopic skull base surgery (ESBS) is perceived as having a high risk of infection because it is performed through the sinuses, which are not sterile. OBJECTIVE To identify the bacteriological characteristics, incidence, mortality, and risk factors for intracranial infection after ESBS. METHODS A retrospective analysis of the first 1,000 ESBS procedures performed at the University of Pittsburgh Medical Center from 1998 to 2008. RESULTS In 18 cases (1.8%), the patient developed meningitis. In 2 cases, the patient died within 2 months after surgery, of noninfectious causes. In 11 cases, cerebrospinal fluid (CSF) cultures had positive results. There were no predominant pathogens. Male sex (odds ratio [OR], 3.97 [95% confidence interval {CI}, 1.21-13.03]; P = .02), history of a craniotomy or endonasal surgery (OR, 4.77 [95% CI, 1.68-13.56]; P = .02), surgery with higher levels of complexity (OR, 6.60 [95% CI, 1.77-24.70]; P = .003), the presence of an external ventricular drain or ventriculoperitoneal shunt at the time of surgery (OR, 6.38 [95% CI, 1.07-38.09]; P = .005), and postoperative CSF leak (OR, 12.99 [95% CI, 4.24-39.82]; P < .001) were risk factors for infection. CONCLUSION The incidence of infection of 1.8% in ESBS is comparable to that in open craniotomy. The most important risk factor was a postoperative CSF leak. All patients recovered from their infection.
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Affiliation(s)
- Yuriko Kono
- Division of Infectious Diseases, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
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23
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Osteomyelitis after bilateral sagittal split osteotomy: case report and a review of the management. ACTA ACUST UNITED AC 2010; 111:442-8. [PMID: 20952224 DOI: 10.1016/j.tripleo.2010.06.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2010] [Revised: 05/29/2010] [Accepted: 06/14/2010] [Indexed: 11/22/2022]
Abstract
OBJECTIVES The purpose of this paper is to report a case of osteomyelitis following a bilateral sagittal split osteotomy in a patient who underwent 2-jaw surgery. A review of the management of osteomyelitis is included, with a discussion of implications for the reconstruction of the mandible after treatment for osteomyelitis. STUDY DESIGN A case of a rapidly progressing osteomyelitis is presented with a detailed review of the management of osteomyelitis, using this case to illustrate key points of management. RESULTS In a very short period of time the patient lost a significant portion of the left side of her mandible. The actual management that she underwent, as well as some of the controversies that are present with the treatment of osteomyelitis, is discussed. CONCLUSION Although osteomyelitis of the mandible usually is seen after odontogenic infections and trauma, it can occur in patients undergoing elective osteotomies. When recognized, it should be aggressively treated.
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Abstract
Gut microbiota is an assortment of microorganisms inhabiting the length and width of the mammalian gastrointestinal tract. The composition of this microbial community is host specific, evolving throughout an individual's lifetime and susceptible to both exogenous and endogenous modifications. Recent renewed interest in the structure and function of this “organ” has illuminated its central position in health and disease. The microbiota is intimately involved in numerous aspects of normal host physiology, from nutritional status to behavior and stress response. Additionally, they can be a central or a contributing cause of many diseases, affecting both near and far organ systems. The overall balance in the composition of the gut microbial community, as well as the presence or absence of key species capable of effecting specific responses, is important in ensuring homeostasis or lack thereof at the intestinal mucosa and beyond. The mechanisms through which microbiota exerts its beneficial or detrimental influences remain largely undefined, but include elaboration of signaling molecules and recognition of bacterial epitopes by both intestinal epithelial and mucosal immune cells. The advances in modeling and analysis of gut microbiota will further our knowledge of their role in health and disease, allowing customization of existing and future therapeutic and prophylactic modalities.
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Affiliation(s)
- Inna Sekirov
- Michael Smith Laboratories, Department of Microbiology and Immunology, and Department of Biochemistry and Molecular Biology, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Shannon L. Russell
- Michael Smith Laboratories, Department of Microbiology and Immunology, and Department of Biochemistry and Molecular Biology, The University of British Columbia, Vancouver, British Columbia, Canada
| | - L. Caetano M. Antunes
- Michael Smith Laboratories, Department of Microbiology and Immunology, and Department of Biochemistry and Molecular Biology, The University of British Columbia, Vancouver, British Columbia, Canada
| | - B. Brett Finlay
- Michael Smith Laboratories, Department of Microbiology and Immunology, and Department of Biochemistry and Molecular Biology, The University of British Columbia, Vancouver, British Columbia, Canada
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25
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Prevedello DM, Fernandez-Miranda JC, Gardner P, Madhok R, Sigounas D, Snyderman CH, Carrau RL, Kassam AB. The transclival endoscopic endonasal approach (EEA) for prepontine neuroenteric cysts: report of two cases. Acta Neurochir (Wien) 2010; 152:1223-9. [PMID: 19997946 DOI: 10.1007/s00701-009-0563-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2009] [Accepted: 11/02/2009] [Indexed: 11/30/2022]
Abstract
INTRODUCTION The transclival endoscopic endonasal approach was used to completely remove a prepontine neuroenteric cyst in two different patients. CASE REPORTS Full clinical improvement without postoperative complication was achieved in both cases. The postoperative hospital stay was limited to 2 and 3 days. DISCUSSION In comparison to posterolateral skull base approaches, the transclival endoscopic endonasal approach allows direct access to the prepontine cistern without unnecessary manipulation of neurovascular structures at the cerebellopontine angle. In contrast to transoral surgery, patients may have decreased risk of infection and can be fed orally immediately without the risks of palatal and oropharyngeal dehiscence. CONCLUSION Neuronavigation technology, strict adherence to microsurgical principles, and significant endoneurosurgical experience are strongly recommended when approaching these challenging lesions.
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Affiliation(s)
- Daniel M Prevedello
- Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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26
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Metagenomic detection of phage-encoded platelet-binding factors in the human oral cavity. Proc Natl Acad Sci U S A 2010; 108 Suppl 1:4547-53. [PMID: 20547834 DOI: 10.1073/pnas.1000089107] [Citation(s) in RCA: 106] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The human oropharynx is a reservoir for many potential pathogens, including streptococcal species that cause endocarditis. Although oropharyngeal microbes have been well described, viral communities are essentially uncharacterized. We conducted a metagenomic study to determine the composition of oropharyngeal DNA viral communities (both phage and eukaryotic viruses) in healthy individuals and to evaluate oropharyngeal swabs as a rapid method for viral detection. Viral DNA was extracted from 19 pooled oropharyngeal swabs and sequenced. Viral communities consisted almost exclusively of phage, and complete genomes of several phage were recovered, including Escherichia coli phage T3, Propionibacterium acnes phage PA6, and Streptococcus mitis phage SM1. Phage relative abundances changed dramatically depending on whether samples were chloroform treated or filtered to remove microbial contamination. pblA and pblB genes of phage SM1 were detected in the metagenomes. pblA and pblB mediate the attachment of S. mitis to platelets and play a significant role in S. mitis virulence in the endocardium, but have never previously been detected in the oral cavity. These genes were also identified in salivary metagenomes from three individuals at three time points and in individual saliva samples by PCR. Additionally, we demonstrate that phage SM1 can be induced by commonly ingested substances. Our results indicate that the oral cavity is a reservoir for pblA and pblB genes and for phage SM1 itself. Further studies will determine the association between pblA and pblB genes in the oral cavity and the risk of endocarditis.
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27
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Kohlgraf KG, Pingel LC, Dietrich DE, Brogden KA. Defensins as anti-inflammatory compounds and mucosal adjuvants. Future Microbiol 2010; 5:99-113. [PMID: 20020832 DOI: 10.2217/fmb.09.104] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Human neutrophil peptide alpha-defensins and human beta-defensins are small, well-characterized peptides with broad antimicrobial activities. In mixtures with microbial antigens, defensins attenuate proinflammatory cytokine responses by dendritic cells in culture, attenuate proinflammatory cytokine responses in the nasal fluids of exposed mice and enhance antibody responses in the serum of vaccinated mice. Although the exact mechanisms are unknown, defensins first start by binding to microbial antigens and adhesins, often attenuating toxic or inflammatory-inducing capacities. Binding is not generic; it appears to be both defensin-specific and antigen-specific with high affinities. Binding of defensins to antigens may, in turn, alter the interaction of antigens with epithelial cells and antigen-presenting cells attenuating the production of proinflammatory cytokines. The binding of defensins to antigens may also facilitate the delivery of bound antigen to antigen-presenting cells in some cases via specific receptors. These interactions enhance the immunogenicity of the bound antigen in an adjuvant-like fashion. Future research will determine the extent to which defensins can suppress early events in inflammation and enhance systemic antibody responses, a very recent and exciting concept that could be exploited to develop therapeutics to prevent or treat a variety of oral mucosal infections, particularly where inflammation plays a role in the pathogenesis of disease and its long-term sequelae.
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Affiliation(s)
- Karl G Kohlgraf
- Dows Institute for Dental Research, College of Dentistry, The University of Iowa, Iowa City, IA 52242, USA.
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28
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Monitoring bacterial contamination in equine platelet concentrates obtained by the tube method in a clean laboratory environment under three different technical conditions. Equine Vet J 2009; 42:63-7. [DOI: 10.2746/042516409x455221] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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29
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Pahlavan S, Haque W, Pereira K, Larrier D, Valdez TA. Microbiology of third and fourth branchial pouch cysts. Laryngoscope 2009; 120:458-62. [DOI: 10.1002/lary.20724] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Cook MC, Tangye SG. Primary immune deficiencies affecting lymphocyte differentiation: lessons from the spectrum of resulting infections. Int Immunol 2009; 21:1003-11. [PMID: 19651645 DOI: 10.1093/intimm/dxp076] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Understanding primary immunodeficiencies has elucidated many aspects of human immunity and susceptibility to infections. Recently, defects have been identified that result in deficiencies of terminally differentiated subsets of lymphocytes including deficiencies of memory B cells, NKT cells and T(h)17 T cells. Together with defects specific to T(h)1 responses, these disorders revealed that dedicated pathogen-specific mechanisms exist for prevalent human pathogens, and that some host defence strategies are remarkably specific. Deficiency of T(h)17 cells confirms that this subset of effector T cells is important for defence at epithelial surfaces. The clinical phenotype includes devastating complications from infection with Staphylococcus aureus. Since the microbial load at human epithelial surfaces is substantial and enormously diverse, this specificity could hold clues that are important for understanding first the complex symbiosis with mucosal commensals and second for understanding the consequences of manipulating these populations in inflammatory diseases.
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Affiliation(s)
- Matthew C Cook
- John Curtin School of Medical Research, Australian National University, Canberra 2600, Australia.
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McFadden JP, Baker BS, Powles AV, Fry L. Psoriasis and streptococci: the natural selection of psoriasis revisited. Br J Dermatol 2009; 160:929-37. [PMID: 19309365 DOI: 10.1111/j.1365-2133.2009.09102.x] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We have previously postulated that surviving invasive streptococcal infections may have been a factor in psoriasis becoming a common skin disease in some parts of the world. Many of the candidate genes linked to psoriasis are associated with the acquired or innate immune system, which are also important in host defence to invasive streptococcal infections. High rates of positive streptococcal throat swabs among patients with chronic plaque psoriasis suggest that they are efficient at internalizing/carrying beta-haemolytic streptococci. Internalization of streptococci in the throat is dependent upon the transforming growth factor (TGF)-beta/fibronectin/alpha 5 beta 1 integrin pathway. The immune cell Th17 and its related cytokine network are important in mucosal defence, being very effective against extracellular microbes but having little effect on intracellular organisms. The TGF-beta/fibronectin/alpha 5 beta 1 integrin pathway and the Th17 cell network also appear to be operative in psoriasis, animal models of both TGF-beta and alpha 5 beta 1 cutaneous overexpression being associated with characteristic psoriasis lesions. We postulate that some of the genotypic/phenotypic changes in different immunological pathways in psoriasis, including the acquired T-cell response, the innate immune response, the TGF-beta/fibronectin/alpha 5 beta 1 integrin pathway and the Th17 cell system, confer protection against mortality during epidemics of invasive streptococcal infections, heightened efficiency in internalizing and allowing carriage of streptococci as well as predisposition to the development of psoriasis.
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Affiliation(s)
- J P McFadden
- Department of Cutaneous Allergy, St John's Institute of Dermatology, St Thomas' Hospital, London SE1 7EH, UK.
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Costalonga M, Cleary PP, Fischer LA, Zhao Z. Intranasal bacteria induce Th1 but not Treg or Th2. Mucosal Immunol 2009; 2:85-95. [PMID: 19079337 PMCID: PMC4637982 DOI: 10.1038/mi.2008.67] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Commensal microorganisms colonize the nasal mucosa without inducing inflammation. Pathogens perturbing the commensal flora often invade evading immune defenses. The different types of adaptive responses that drive the distinct behaviors of commensals and pathogens, allowing one to persist at mucosal surfaces and the other to survive within tissues, are not yet clear. In the present work we demonstrate that although crossing epithelial barriers, the commensal Lactobacillus murinus stimulates epitope-specific CD4(+) T cells in nasal-associated lymphoid tissue (NALT) less efficiently than the pathogen Streptococcus pyogenes. In NALT antigen-presenting cells other than CCR6(+) CD11c(+) dendritic cells process and present the microbial antigens. Effector/memory CD4(+) T cells generated after intranasal priming with L. murinus and S. pyogenes surprisingly express similar proinflammatory cytokines and are not CD25+/FoxP3+ T-regulatory cells when recirculating in the spleen. These findings suggest that when a commensal crosses the nasal epithelial barrier it induces a proinflammatory response similar to a pathogen but without causing disease.
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Affiliation(s)
- M Costalonga
- Department of Developmental and Surgical Sciences, School of Dentistry, University of Minnesota, Minneapolis, Minnesota, USA
| | - PP Cleary
- Department of Microbiology, Medical School, University of Minnesota, Minneapolis, Minnesota, USA
| | - LA Fischer
- Department of Developmental and Surgical Sciences, School of Dentistry, University of Minnesota, Minneapolis, Minnesota, USA
| | - Z Zhao
- Department of Developmental and Surgical Sciences, School of Dentistry, University of Minnesota, Minneapolis, Minnesota, USA
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Abstract
Mycoplasma pneumoniae is one of the most common agents of community-acquired pneumonia in children and young adults. Although M. pneumoniae is a small bacterium that can reproduce in an artificial culture medium and is known to be sensitive to certain antibiotics in vitro as well as in vivo, the immunopathogenesis of M. pneumoniae in the human host is not fully understood. The epidemiologic characteristics, including periodic epidemics, and some clinical characteristics of M. pneumoniae are similar to those observed in systemic viral infections. Many experimental and clinical studies have suggested that the pathogenesis of lung injuries in M. pneumoniae infection is associated with a cell-mediated immune reaction, including high responsiveness to corticosteroid therapy. This paper presents an overview of M. pneumoniae infections, with emphasis on epidemiology, pathogenesis and treatment.
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Affiliation(s)
- Kyung-Yil Lee
- Department of Pediatrics, The Catholic University of Korea, Daejeon St Mary's Hospital, 520-2 Daeheung 2-dong, Jung-gu, Daejeon 301-723, Republic of Korea.
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