scholarly journals P0398PREVALENCE OF RED COMPLEX OF PERIODONTAL DISEASE BACTERIA IN TONSILS OF IGA NEPHROPATHY PATIENTS

2020 ◽  
Vol 35 (Supplement_3) ◽  
Author(s):  
Yasuyuki Nagasawa ◽  
Ryota Nomura ◽  
Taro Misaki ◽  
Seigo Ito ◽  
Shuhei Naka ◽  
...  
Keyword(s):  
Periodontal Disease ◽  
Iga Nephropathy ◽  
Chronic Tonsillitis ◽  
Rt Pcr ◽  
Specific Primers ◽  
Tannerella Forsythia ◽  
Primary Glomerulonephritis ◽  
Periodontal Bacteria ◽  
The Relationship ◽  
Written Informed Consent

Abstract Background and Aims IgA nephropathy (IgAN) is one of most common primary glomerulonephritis, whose pathogenesis had remained unclear. We had reported that C.rectus and T.denticola, kinds of major periodontal disease bacteria, in tonsils with IgA nephropathy patients were specific to IgAN patients compared with chronic tonsillitis (Nagasawa-Y et al, Plos One, 2014). We also reported C.rectus and S.mutans increased proteinuria synergistically (Misaki-T et al, Nephron, 2018). Red complex of bacteria related with periodontal disease consists of P.gingivalis, T.denticola, and Tannerella forsythia, which has strongest pathogenicity of periodontal disease (Figure 1). But, in this point there were no report of prevalence of red complex of periodontal bacteria in IgA nephropathy. In this study, we evaluated the periodontal disease bacteria including P.gingivalis, T.denticola, and Tannerella forsythia in tonsils of IgAN patients, and the relationship between these periodontal bacteria clinical features in IgAN patients. Method Tonsils were obtained from 23 IgAN patients and 63 chronic tonsillitis patients when the tonsillectomy was operated. mRNAs were extracted from tonsils and the prevalences of P.gingivalis, T.denticola, and Tannerella forsythia were evaluated by RT-PCR using bacteria specific primers. All patients gave the written informed consent which was approved by Hyogo College of medicine. Results Average age was 33+-14 in IgAN patients, and the age in control patients was 27+-7. The average proteinuria in IgAN patietns was 0.9+-1.1g/gcre, and average hematuria was (2+). The prevalence of T.denticola was very low in both groups (0%, 1.6% respectively). The prevalence of P.gingivalis in IgA patients was significantly higher than that in control patients (33% vs 3.2%, respectively, P<0.0001), and the prevalence of Tannerella forsythia in IgAN patients was also significantly higher than that in control (28% vs 6.4%, respectively, P<0.05) which had not been reported (Figure 2). The types of cilia of P.gingivalis (fim A types) were also evaluated. Obviously untypeable of fim A, which is usually minor type, was dominant in IgAN patients. Conclusion Prevalence of red complex of periodontal disease bacteria, especially P.gingivalis, Tannerella forsythia in IgAN patient was higher than that in control. Red complex of periodontal disease bacteria might have some relationship with pathogenesis of IgAN

scholarly journals Title IgA Nephropathy and Oral Bacterial Species Related to Dental Caries and Periodontitis

2022 ◽  
Vol 23 (2) ◽  
pp. 725
Author(s):  
Yasuyuki Nagasawa ◽  
Taro Misaki ◽  
Seigo Ito ◽  
Shuhei Naka ◽  
Kaoruko Wato ◽  
...  
Keyword(s):  
Dental Caries ◽  
Bacterial Infection ◽  
Iga Nephropathy ◽  
Bacterial Infections ◽  
Bacterial Species ◽  
Oral Bacteria ◽  
Treponema Denticola ◽  
Collagen Binding ◽  
Periodontal Bacteria ◽  
The Relationship

A relationship between IgA nephropathy (IgAN) and bacterial infection has been suspected. As IgAN is a chronic disease, bacteria that could cause chronic infection in oral areas might be pathogenetic bacteria candidates. Oral bacterial species related to dental caries and periodontitis should be candidates because these bacteria are well known to be pathogenic in chronic dental disease. Recently, several reports have indicated that collagen-binding protein (cnm)-(+) Streptococcs mutans is relate to the incidence of IgAN and the progression of IgAN. Among periodontal bacteria, Treponema denticola, Porphyromonas gingivalis and Campylobacte rectus were found to be related to the incidence of IgAN. These bacteria can cause IgAN-like histological findings in animal models. While the connection between oral bacterial infection, such as infection with S. mutans and periodontal bacteria, and the incidence of IgAN remains unclear, these bacterial infections might cause aberrantly glycosylated IgA1 in nasopharynx-associated lymphoid tissue, which has been reported to cause IgA deposition in mesangial areas in glomeruli, probably through the alteration of microRNAs related to the expression of glycosylation enzymes. The roles of other factors related to the incidence and progression of IgA, such as genes and cigarette smoking, can also be explained from the perspective of the relationship between these factors and oral bacteria. This review summarizes the relationship between IgAN and oral bacteria, such as cnm-(+) S. mutans and periodontal bacteria.

scholarly journals The Link between Periodontal Disease and Oral Cancer—A Certainty or a Never-Ending Dilemma?

2021 ◽  
Vol 11 (24) ◽  
pp. 12100
Author(s):  
Zinovia Surlari ◽  
Dragoș Ioan Virvescu ◽  
Elena-Raluca Baciu ◽  
Roxana-Ionela Vasluianu ◽  
Dana Gabriela Budală
Keyword(s):  
Oral Cancer ◽  
Periodontal Disease ◽  
Tooth Loss ◽  
The Body ◽  
Confounding Factors ◽  
Local Inflammation ◽  
Periodontal Bacteria ◽  
Bone Damage ◽  
Research Findings ◽  
The Relationship

Periodontal disease can have a substantial systemic influence on the body that extends beyond the oral cavity and can lead to local inflammation, bone damage, and tooth loss. A great number of studies suggest that periodontitis and oral cancer are linked, however it is unclear if specific periodontal bacteria promote the development of systemic illness. The mediators of the relationship between those two pathologies are still being discovered, but the research findings indicate the existence of a correlation. Additional research, including confounding factors, is needed to strengthen this link.

scholarly journals History of IgA Nephropathy Mouse Models

2021 ◽  
Vol 10 (14) ◽  
pp. 3142
Author(s):  
Batoul Wehbi ◽  
Virginie Pascal ◽  
Lina Zawil ◽  
Michel Cogné ◽  
Jean-Claude Aldigier
Keyword(s):  
Iga Nephropathy ◽  
Small Animal ◽  
Experimental Models ◽  
Murine Models ◽  
Therapeutic Approaches ◽  
Complement Components ◽  
Simple Description ◽  
Primary Glomerulonephritis ◽  
History Of ◽  
Small Animal Models

IgA nephropathy (IgAN) is the most common primary glomerulonephritis in the world. It was first described in 1968 by Jean Berger and Nicole Hinglais as the presence of intercapillary deposits of IgA. Despite this simple description, patients with IgAN may present very broad clinical features ranging from the isolated presence of IgA in the mesangium without clinical or biological manifestations to rapidly progressive kidney failure. These features are associated with a variety of histological lesions, from the discrete thickening of the mesangial matrix to diffuse cell proliferation. Immunofluorescence on IgAN kidney specimens shows the isolated presence of IgA or its inconsistent association with IgG and complement components. This clinical heterogeneity of IgAN clearly echoes its complex and multifactorial pathophysiology in humans, inviting further analyses of its various aspects through the use of experimental models. Small-animal models of IgAN provide the most pertinent strategies for studying the multifactorial aspects of IgAN pathogenesis and progression. Although only primates have the IgA1 subclass, several murine models have been developed in which various aspects of immune responses are deregulated and which are useful in the understanding of IgAN physiopathology as well as in the assessment of IgAN therapeutic approaches. In this manuscript, we review all murine IgAN models developed since 1968 and discuss their remarkable contribution to understanding the disease.

scholarly journals Relationship between NAFLD and Periodontal Disease from the View of Clinical and Basic Research, and Immunological Response

2021 ◽  
Vol 22 (7) ◽  
pp. 3728
Author(s):  
Masahiro Hatasa ◽  
Sumiko Yoshida ◽  
Hirokazu Takahashi ◽  
Kenichi Tanaka ◽  
Yoshihito Kubotsu ◽  
...  
Keyword(s):  
Risk Factor ◽  
Periodontal Disease ◽  
Alveolar Bone ◽  
Basic Research ◽  
Epidemiological Studies ◽  
Cross Sectional ◽  
Periodontopathic Bacteria ◽  
In Vivo Animal Model ◽  
The Relationship

Periodontal disease is an inflammatory disease caused by pathogenic oral microorganisms that leads to the destruction of alveolar bone and connective tissues around the teeth. Although many studies have shown that periodontal disease is a risk factor for systemic diseases, such as type 2 diabetes and cardiovascular diseases, the relationship between nonalcoholic fatty liver disease (NAFLD) and periodontal disease has not yet been clarified. Thus, the purpose of this review was to reveal the relationship between NAFLD and periodontal disease based on epidemiological studies, basic research, and immunology. Many cross-sectional and prospective epidemiological studies have indicated that periodontal disease is a risk factor for NAFLD. An in vivo animal model revealed that infection with periodontopathic bacteria accelerates the progression of NAFLD accompanied by enhanced steatosis. Moreover, the detection of periodontopathic bacteria in the liver may demonstrate that the bacteria have a direct impact on NAFLD. Furthermore, Porphyromonas gingivalis lipopolysaccharide induces inflammation and accumulation of intracellular lipids in hepatocytes. Th17 may be a key molecule for explaining the relationship between periodontal disease and NAFLD. In this review, we attempted to establish that oral health is essential for systemic health, especially in patients with NAFLD.

scholarly journals First Report of Mosaic Disease Caused by Colombian datura virus on Solanum lycopersicum Plants Commercially Cultivated in Japan

Plant Disease ◽  
2014 ◽  
Vol 98 (5) ◽  
pp. 698-698 ◽  
Author(s):  
Y. Tomitaka ◽  
T. Usugi ◽  
R. Kozuka ◽  
S. Tsuda
Keyword(s):  
Nucleotide Sequence ◽  
Solanum Lycopersicum ◽  
Mosaic Disease ◽  
Causal Agent ◽  
Cultivated Plants ◽  
Rt Pcr ◽  
Degenerate Primers ◽  
Specific Primers ◽  
Tomato Plants ◽  
First Report

In 2009, some commercially grown tomato (Solanum lycopersicum) plants in Chiba Prefecture, Japan, exhibited mosaic symptoms. Ten plants from a total of about 72,000 cultivated plants in the greenhouses showed such symptoms. To identify the causal agent, sap from leaves of the diseased plants was inoculated into Chenopodium quinoa and Nicotiana benthamiana plants. Local necrotic lesions appeared on inoculated leaves of C. quinoa, but no systemic infection was observed. Systemic mosaic symptoms were observed on the N. benthamiana plants inoculated. Single local lesion isolation was performed three times using C. quinoa to obtain a reference isolate for further characterization. N. benthamiana was used for propagation of the isolate. Sap from infected leaves of N. benthamiana was mechanically inoculated into three individual S. lycopersicum cv. Momotaro. Symptoms appearing on inoculated tomatoes were indistinguishable from those of diseased tomato plants found initially in the greenhouse. Flexuous, filamentous particles, ~750 nm long, were observed by electron microscopy in the sap of the tomato plants inoculated with the isolate, indicating that the infecting virus may belong to the family Potyviridae. To determine genomic sequence of the virus, RT-PCR was performed. Total RNA was extracted from the tomato leaves experimentally infected with the isolate using an RNeasy Plant Mini kit (QIAGEN, Hilden, Germany). RT-PCR was performed by using a set of universal, degenerate primers for Potyviruses as previously reported (2). Amplicons (~1,500 bp) generated by RT-PCR were extracted from the gels using the QIAquick Gel Extraction kit (QIAGEN) and cloned into pCR-BluntII TOPO (Invitrogen, San Diego, CA). DNA sequences of three individual clones were determined using a combination of plasmid and virus-specific primers, showing that identity among three clones was 99.8%. A consensus nucleotide sequence of the isolate was deposited in GenBank (AB823816). BLASTn analysis of the nucleotide sequence determined showed 99% identity with a partial sequence in the NIb/coat protein (CP) region of Colombian datura virus (CDV) tobacco isolate (JQ801448). Comparison of the amino acid sequence predicted for the CP with previously reported sequences for CDV (AY621656, AJ237923, EU571230, AM113759, AM113754, and AM113761) showed 97 to 100% identity range. Subsequently, CDV infection in both the original and experimentally inoculated plants was confirmed by RT-PCR using CDV-specific primers (CDVv and CDVvc; [1]), and, hence, the causal agent of the tomato disease observed in greenhouse tomatoes was proved to be CDV. The first case of CDV on tomato was reported in Netherlands (3), indicating that CDV was transmitted by aphids from CDV-infected Brugmansia plants cultivated in the same greenhouse. We carefully investigated whether Brugmansia plants naturally grew around the greenhouses, but we could not find them inside or in proximity to the greenhouses. Therefore, sources of CDV inoculum in Japan are still unclear. This is the first report of a mosaic disease caused by CDV on commercially cultivated S. lycopersicum in Japan. References: (1) D. O. Chellemi et al. Plant Dis. 95:755, 2011. (2) J. Chen et al. Arch. Virol. 146:757, 2001. (3) J. Th. J. Verhoeven et al. Eur. J. Plant. Pathol. 102:895, 1996.

scholarly journals The relationship between positivity for COVID-19 RT-PCR and symptoms, clinical findings, and mortality in Turkey

2021 ◽  
pp. 1-6
Author(s):  
Erkan Ozcan ◽  
Serap Yavuzer ◽  
Betul Borku Uysal ◽  
Mehmet Sami Islamoglu ◽  
Hande Ikitimur ◽  
...  
Keyword(s):  
Clinical Findings ◽  
Rt Pcr ◽  
The Relationship

Abstract P626: Periodontal Disease is Independently Associated With Cerebral Small Vessel Disease

Stroke ◽  
2021 ◽  
Vol 52 (Suppl_1) ◽  
Author(s):  
Forrest Lowe ◽  
Souvik Sen ◽  
Hamdi S Adam ◽  
Ryan Demmer ◽  
Bruce A Wasserman ◽  
...  
Keyword(s):  
Cognitive Impairment ◽  
Periodontal Disease ◽  
Small Vessel Disease ◽  
Multinomial Logistic Regression ◽  
Cerebral Small Vessel Disease ◽  
Small Vessel ◽  
White Matter Hyperintensity ◽  
Periodontal Health ◽  
Vessel Disease ◽  
The Relationship

Background: Prior studies have shown the association between periodontal disease, lacunar strokes and cognitive impairment. Using the Atherosclerosis Risk in Communities (ARIC) cohort study we investigated the relationship between periodontal disease (PD) and the development of MRI verified small vessel disease. Methods: Using the ARIC database data we extracted data for 1143 (mean age 77 years, 76% white, 24% African-American and 45% male) participants assessed for PD (N=800) versus periodontal health (N=343). These participants were assessed for small vessel disease on 3T MRI as measured by the log of white matter hyperintensity volume (WMHV). WMHV were derived from a semiautomated segmentation of FLAIR images. Student t-test was then used to evaluate the relationship between small vessel disease as the log of WMHV in subjects with PD or periodontal health. Based on WMHV the patients were grouped into quartiles and the association of PD with WMHV were tested using the group in periodontal health and lowest quartile of WMHV as the reference groups. Multinomial logistic regression was used to compute crude and adjusted odds ratio (OR) for the higher quartiles of WMHV compared to the reference quartile. Results: There was a significant increase in the presence of small vessel disease measured as log WMHV in the PD cohort as compared to periodontal health cohort with p= 0.023 on Independent Sample t-est. Based on WMHV the subjects were grouped into quartiles 0-6.41, >6.41-11.56, >11.56-21.36 and >21.36 cu mm3). PD was associated with only the highest quartile of WMHV on univariate (crude OR 1.77, 95% CI 1.23-2.56) and multivariable (adjusted OR 1.61, 95% CI 1.06-2.44) analyses. The later was adjusted for age, race, gender, hypertension, diabetes and smoking. Conclusion: Based on this prospective cohort there is data to suggest that PD may be associated with cerebral small vessel disease. Maintaining proper dental health may decrease future risk for the associated lacunar strokes and vascular cognitive impairment.

Đánh giá nồng độ lactate và procalcitonin ở bệnh nhân Covid-19

2022 ◽  
Author(s):  
Thanh Xuan Nguyen
Keyword(s):  
Serum Level ◽  
Respiratory Infections ◽  
Severe Pneumonia ◽  
Cross Sectional Study ◽  
Multiple Organ ◽  
High Rate ◽  
Rt Pcr ◽  
Wuhan City ◽  
Cross Sectional ◽  
The Relationship

TÓM TẮT Đặt vấn đề: Bệnh COVID-19 đa dạng từ không có triệu chứng đến có các triệu chứng nhẹ cho đến viêm phổi nặng, hội chứng suy hô hấp cấp tiến triển (ARDS), nhiễm khuẩn huyết suy đa tạng và tử vong. Người cao tuổi, người có bệnh mạn tính sẽ có nguy cơ diễn biến nặng nhiều hơn. Nghiên cứu này nhằm xác định nồng độ lactate và PCT ở những bệnh nhân Covid-19 và xét mối liên quan giữa lactate và PCT trên bệnh nhân Covid-19. Đối tượng và phương pháp: Nghiên cứu mô tả cắt ngang trên 126 bệnh nhân được chẩn đoán nhiễm Sars-Cov-2 bằng xét nghiệm RT PCR. Kết quả: Tuổi trung bình 55,98 ± 17,1 tuổi (4 - 98 tuổi). Bệnh nhân > 60 tuổi chiếm tỉ lệ cao nhất (42,8%). Trung vị PCT: 3,6 (95%CI:3,21 - 3,75) ng/ml; trung vị lactate 1,5 (95%CI:1,21 - 1,91) mmol/L; lactate có tương quan thuận và yếu với procalcitonin với r = 0,241; p < 0,001. Nồng độ procalcitonin > 0,1 ng/ml; lactate > 2 mmol/l ở bệnh nhân Covid-19 chiếm tỷ lệ cao với 89,7% và 39,7%. Kết luận: Chỉ điểm procalcitonin, lactate tăng cao ở bệnh nhân Covid-19. ABSTRACT ASSESSMENT OF SERUM LEVEL OF LACTATE AND PROCALCITONIN IN COVID-19 PATIENTS Background: Sars-CoV-2 has been identified as the cause of acute respiratory infections in Wuhan city, Hubei province, China, and has since spread worldwide. Sars-CoV-2 is capable of aerosol transmission in enclosed, crowded, and poorly ventilated spaces. COVID-19 illness ranges from asymptomatic to mild symptoms to severe pneumonia, acute respiratory distress syndrome (ARDS), sepsis, multiple organ failure, and death. This study aims to determine lactate and PCT levels in Covid-19 patients and examine the relationship between lactate and PCT in Covid-19 patients. Methods: A cross-sectional study was performed on 126 patients diagnosed with Sars-Cov-2 infection by RT-PCR. Results: Mean age was 55.98 ± 17.1 years (range: 4-98 years). Patients more than 60 years old were accounted for the highest rate (42.8%). Median PCT: 3.6 (95%CI:3.21 - 3.75) ng/ml; median lactate 1.5 (95%CI:1.21 - 1,91) mmol/L; lactate has a positive and weak correlation with procalcitonin with r = 0.241; p < 0.001. Procalcitonin concentration > 0.1 ng/ml; lactate > 2 mmol/l in patients with Covid-19 accounted for a high rate with 89.7% and 39.7%. Conclusion: Serum level of procalcitonin and lactate raise highly in Covid-19 patients. Keywords: Covid-19, procalcitonin, lactate.

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