scholarly journals Specific strains of Streptococcus mutans, a pathogen of dental caries, in the tonsils, are associated with IgA nephropathy

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Seigo Ito ◽  
Taro Misaki ◽  
Shuhei Naka ◽  
Kaoruko Wato ◽  
Yasuyuki Nagasawa ◽  
...  
Keyword(s):  
Dental Caries ◽  
Iga Nephropathy ◽  
Streptococcus Mutans ◽  
Serum Albumin Level ◽  
Albumin Level ◽  
Human Macrophage ◽  
Lower Serum ◽  
Collagen Binding ◽  
Macrophage Marker ◽  
Positive Rate

AbstractStreptococcus mutans is known to be a major causative agent of dental caries, and strains expressing the cell surface collagen-binding Cnm protein contribute to the development of several systemic diseases. A relationship between tonsillar immunity and glomerulonephritis has been recognized in IgA nephropathy (IgAN), and specific pathogens may have effects on tonsillar immunity (mucosal immunity). Here, we present findings showing a relationship between the presence of Cnm-positive S. mutans strains in the tonsils of IgAN patients and IgAN condition/pathogenesis. Analyses of tonsillar specimens obtained from patients with IgAN (n = 61) and chronic tonsillitis (controls; n = 40) showed that the Cnm protein-positive rate was significantly higher in IgAN patients. Among IgAN patients, the tonsillar Cnm-positive group (n = 15) had a significantly higher proportion of patients with high urinary protein (>1.5 g/gCr) and lower serum albumin level than the Cnm-negative group (n = 46). Additionally, Cnm protein and CD68, a common human macrophage marker, were shown to be merged in the tonsils of IgAN patients. These findings suggest that Cnm-positive S. mutans strains in the tonsils may be associated with severe IgAN.

scholarly journals IgA Nephropathy: A Twenty Year Retrospective Single Center Experience

2009 ◽  
Vol 3 ◽  
pp. CMPed.S2224 ◽  
Author(s):  
Jacob Rube ◽  
Alexandra Peyser ◽  
Freya Tarapore ◽  
Bari Scheckner ◽  
Rachel Frank ◽  
...  
Keyword(s):  
Iga Nephropathy ◽  
Severe Disease ◽  
Albumin Level ◽  
Prognostic Indicators ◽  
Glomerular Injury ◽  
Injury Score ◽  
Lower Serum ◽  
Single Center Experience ◽  
Recorded Data

IgA nephropathy (IgAN) is a common glomerular disease whose etiology is unknown. Previous studies have described the clinical and laboratory features but none have specifically compared patients during different time periods. This 20 year retrospective study was performed to assess trends in the severity of IgAN from 1989–2008. We reviewed 57 patient charts that contained a confirmed biopsy diagnosis of IgAN and recorded data at the time of diagnosis and the final follow-up appointment. Clinical data included physical examination, urine, and blood tests. Patients were separated into two cohorts, Cohort 1 1989–1998 and Cohort 2 1999–2008. An increase in severity was noted in Cohort 2 based on a significantly higher Up/c and lower serum albumin level. Other prognostic indicators including GFRe, hematocrit, and glomerular injury score also demonstrated a trend towards more severe disease over the past 20 years. The patients in both Cohorts received similar treatments and had comparable renal function at the last follow-up visit. Based on our findings, we suggest that although a kidney biopsy is required to diagnose IgAN, the procedure may not be necessary in patients clinically suspected of having the disease but who have normal kidney function and minimal urine abnormalities.

Hypoalbuminemia Is An Independent Prognostic Factor In Myelodysplastic Syndromes

Blood ◽  
2010 ◽  
Vol 116 (21) ◽  
pp. 4001-4001
Author(s):  
Maria Corrales-Yepez ◽  
Mohamed A. Kharfan-Dabaja ◽  
Jeffrey Lancet ◽  
Alan F. List ◽  
Eric Padron ◽  
...  
Keyword(s):  
Prognostic Factor ◽  
Serum Albumin ◽  
Serum Albumin Level ◽  
Risk Group ◽  
Risk Groups ◽  
Albumin Level ◽  
Refractory Anemia ◽  
Lower Serum ◽  
Kaplan Meier ◽  
Low Serum

Abstract Abstract 4001 Background: Low serum albumin level is known to be an adverse prognostic factor in patients with malignancies such as multiple myeloma. We previously reported that severe hypoalbuminemia (<3.0 g/dl) at day +90 post allogeneic hematopoietic stem cell transplant (AHCT) was an independent predictor of non-relapse and overall mortality in patients with acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS) (Kharfan-Dabaja et al Biol Blood Marrow Transplant. 2010 Jul). In this study we examined prognostic value of serum albumin level in patients with MDS. Methods: Data were analyzed from the Moffitt Cancer Center (MCC) MDS database with chart review verification. The primary objective was to examine the role of serum albumin at time of presentation to MCC as a prognostic marker for overall survival (OS). Patients were divided into 3 groups of serum albumin levels (≤ 3.5, 3.6–4.0 and > 4.0 g/dl). The Kaplan–Meier method was used to estimate median OS. The log rank test was used to compare Kaplan–Meier survival estimates between two groups. Cox proportional hazards regression was used for multivariable analysis. Results: Between January 2001 and December 2009, 844 patients were captured by the MCC MDS database. The median age was 69 years. MDS subtypes were coded as refractory anemia (RA) (n=98;12%), refractory anemia with ring sideroblasts (RARS) (n=76;9%), del(5q) (n=20;2.4%), refractory cytopenia with multi-lineage dysplasia (RCMD) (n=96;11%), refractory anemia with excess blasts (RAEB) (n=255;30%), therapy related MDS (n=22;2.6%), and MDS-NOS (n=275; 33%). The distribution of IPSS risk groups was: 18.7% Low risk, 42.9% Intermediate-1 (Int-1), 19.9% Int-2, 5.3% High risk, and 13.2% unknown. Baseline characteristics for the three patient groups defined by serum albumin level are summarized in (Table-1). There was no difference in red blood cell transfusion dependency (RBC-TD) rate between the 3 groups (p=0.21). The median OS for all patients was 36 months (95% confidence interval (CI) 31.5–40.5 mo). Age, IPSS risk group, RBC-TD, Serum ferritin were statistically significant prognostic factors in univariable analysis. The median OS was 19 mo (95%CI= 14.9–23.1 mo), 35 mo (95%CI= 28.7–41.3 mo), and 53 mo (95%CI= 44.7–61.3 mo) for patients with serum albumin levels ≤ 3.5 g/dl, 3.6–4.0 g/dl, > 4.0 g/dl, respectively. (Figure-1) (p= <0.005). After adjustment for age, RBC-TD, OS was statistically significantly inferior among MDS patients with lower serum albumin (Hazard Ratio (HR) = 0.79.; 95%CI= 0.69–0.90; p= 0.001), and higher-risk IPSS group (HR=1.67; 95%CI=1.48-1.87; p= <0.005). The overall rate of AML transformation was 29.2%. Rate of AML transformation was higher in patients with lower serum albumin, 38% in patients with serum albumin ≤ 3.5 g/dl, 30% for patients 3.6–4.0 g/dl, and 23% in patients with serum albumin > 4.0 g/dl (p-value 0.005). Among patients in the Low/Int-1 IPSS risk group, the median OS was 28 mo (95%CI=15.7-40.3 mo), 48 mo (95%CI=38.8-58.0 mo), and 60 mo (95%CI=47.6-72.4 mo) for patients with serum albumin levels ≤ 3.5 g/dl, 3.6–4.0 g/dl and > 4.0 g/dl, respectively (p=0.003). Among patients in the Int-2/High IPSS risk group, the median OS was 16 mo (95%CI 13.3–15.7 mo), 22 mo (95%CI 18.0–26.0 mo), and 21 mo (95%CI 8.8–33.2 mo) respectively for patients with serum albumin levels ≤ 3.5 g/dl, 3.6–4.0 g/dl and > 4.0 g/dl, respectively p=0.03). Conclusion: In this retrospective analysis of a large single institution MDS database, serum albumin is found to be an independent prognostic factor for OS and AML transformation in MDS patients. The prognostic power of low serum albumin was greatest among patients with Low/Int-1 IPSS risk group, but remained an independent variable across all risk groups. Serum albumin may also be a surrogate marker of general health, co- morbidities, and performance status. Disclosures: No relevant conflicts of interest to declare.

Distribution of Streptococcus mutans strains with collagen-binding proteins in the oral cavity of IgA nephropathy patients

2014 ◽  
Vol 19 (5) ◽  
pp. 844-850 ◽  
Author(s):  
Taro Misaki ◽  
Shuhei Naka ◽  
Keiko Kuroda ◽  
Ryota Nomura ◽  
Tempei Shiooka ◽  
...  
Keyword(s):  
Oral Cavity ◽  
Iga Nephropathy ◽  
Streptococcus Mutans ◽  
Binding Proteins ◽  
Collagen Binding

scholarly journals Analysis of risk factors and outcome in peritoneal dialysis patients with early-onset peritonitis: a multicentre, retrospective cohort study

BMJ Open ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. e029949 ◽  
Author(s):  
Xiaoyan Ma ◽  
Yingfeng Shi ◽  
Min Tao ◽  
Xiaolu Jiang ◽  
Yi Wang ◽  
...  
Keyword(s):  
Risk Factors ◽  
Serum Albumin ◽  
Retrospective Cohort ◽  
Serum Albumin Level ◽  
Albumin Level ◽  
First Episode ◽  
Lower Serum ◽  
Factors Associated ◽  
All Cause Mortality ◽  
Technique Failure

ObjectivesTo investigate the risk factors associated with early-onset peritonitis (EOP) and their influence on patients’ technique survival and mortality.Study designRetrospective, cohort study.SettingThree peritoneal dialysis (PD) units in Shanghai.ParticipantsPD patients from 1 June 2006 to 1 May 2018 were recruited and followed up until 31 December 2018. According to time-to-first episode of peritonitis, patients were divided into non-peritonitis (n=144), EOP (≤6 months, n=74) and late-onset peritonitis (LOP) (>6 months, n=139).Primary and secondary outcome measuresEOP was defined as the first episode of peritonitis occurring within 6 months after the initiation of PD. The outcomes were all-cause mortality and technique failure.ResultsOf the 357 patients, 74 (20.7%) patients developed their first episode of peritonitis within the first 6 months. Compared with the LOP group, the EOP group had older ages, more female patients, higher Charlson Comorbidity Index (CCI) score, lower serum albumin levels and renal function at the time of initiation of PD, and higher diabetes mellitus and peritonitis rates (p<0.05).Staphylococcuswas the most common Gram-positive organism in both EOP and LOP groups. The multivariate logistic regression analysis showed that factors associated with EOP included a higher CCI score (OR 1.285, p=0.011), lower serum albumin level (OR 0.924, p=0.016) and lower Kt/V (OR 0.600, p=0.018) at start of PD. In the Cox proportional-hazards model, EOP was more likely a predictor of technique failure (HR 1.801, p=0.051). There was no difference between EOP and LOP for all-cause mortality.ConclusionA higher CCI score and lower serum albumin level and Kt/V at PD initiation were significantly associated with EOP. EOP also predicted a high peritonitis rate and poor clinical outcome.

Predicting nonroutine discharge in patients undergoing surgery for vertebral column tumors

2020 ◽  
pp. 1-10 ◽  
Author(s):  
Jeff Ehresman ◽  
Zach Pennington ◽  
James Feghali ◽  
Andrew Schilling ◽  
Andrew Hersh ◽  
...  
Keyword(s):  
Serum Albumin ◽  
Vertebral Column ◽  
Serum Albumin Level ◽  
Frailty Index ◽  
Emergency Admission ◽  
Albumin Level ◽  
Comprehensive Cancer Center ◽  
Lower Serum ◽  
Web Based ◽  
Inpatient Facility

OBJECTIVEMore than 8000 patients are treated annually for vertebral column tumors, of whom roughly two-thirds will be discharged to an inpatient facility (nonroutine discharge). Nonroutine discharge is associated with increased care costs as well as delays in discharge and poorer patient outcomes. In this study, the authors sought to develop a prediction model of nonroutine discharge in the population of vertebral column tumor patients.METHODSPatients treated for primary or metastatic vertebral column tumors at a single comprehensive cancer center were identified for inclusion. Data were gathered regarding surgical procedure, patient demographics, insurance status, and medical comorbidities. Frailty was assessed using the modified 5-item Frailty Index (mFI-5) and medical complexity was assessed using the modified Charlson Comorbidity Index (mCCI). Multivariable logistic regression was used to identify independent predictors of nonroutine discharge, and multivariable linear regression was used to identify predictors of prolonged length of stay (LOS). The discharge model was internally validated using 1000 bootstrapped samples.RESULTSThe authors identified 350 patients (mean age 57.0 ± 13.6 years, 53.1% male, and 67.1% treated for metastatic vs primary disease). Significant predictors of prolonged LOS included higher mCCI score (β = 0.74; p = 0.026), higher serum absolute neutrophil count (β = 0.35; p = 0.001), lower hematocrit (β = −0.34; p = 0.001), use of a staged operation (β = 4.99; p < 0.001), occurrence of postoperative pulmonary embolism (β = 3.93; p = 0.004), and surgical site infection (β = 9.93; p < 0.001). Significant predictors of nonroutine discharge included emergency admission (OR 3.09; p = 0.001), higher mFI-5 score (OR 1.90; p = 0.001), lower serum albumin level (OR 0.43 per g/dL; p < 0.001), and operations with multiple stages (OR 4.10; p < 0.001). The resulting statistical model was deployed as a web-based calculator (https://jhuspine4.shinyapps.io/Nonroutine_Discharge_Tumor/).CONCLUSIONSThe authors found that nonroutine discharge of patients with surgically treated vertebral column tumors was predicted by emergency admission, increased frailty, lower serum albumin level, and staged surgical procedures. The resulting web-based calculator tool may be useful clinically to aid in discharge planning for spinal oncology patients by preoperatively identifying patients likely to require placement in an inpatient facility postoperatively.

Lower serum albumin level is associated with higher fractional excretion of creatinine

2013 ◽  
Vol 18 (3) ◽  
pp. 469-474 ◽  
Author(s):  
Masaru Horio ◽  
Enyu Imai ◽  
Yoshinari Yasuda ◽  
Tsuyoshi Watanabe ◽  
Seiichi Matsuo
Keyword(s):  
Serum Albumin ◽  
Serum Albumin Level ◽  
Fractional Excretion ◽  
Albumin Level ◽  
Lower Serum

scholarly journals Molecular and clinical analyses of the gene encoding the collagen-binding adhesin of Streptococcus mutans

2009 ◽  
Vol 58 (4) ◽  
pp. 469-475 ◽  
Author(s):  
Ryota Nomura ◽  
Kazuhiko Nakano ◽  
Naho Taniguchi ◽  
Jinthana Lapirattanakul ◽  
Hirotoshi Nemoto ◽  
...  
Keyword(s):  
Dental Caries ◽  
Streptococcus Mutans ◽  
Type I Collagen ◽  
Type I ◽  
Cell Surface Antigens ◽  
Gene Encoding ◽  
Collagen Binding ◽  
Positive Mother ◽  
Pcr Method ◽  
Encoding Gene

Streptococcus mutans is a known pathogen of dental caries and its major cell surface antigens have been widely investigated. Recently, an approximately 120 kDa Cnm protein with binding properties to type I collagen was identified, and its encoding gene (cnm) cloned and sequenced. In the present study, we sequenced cnm from 47 different clinical S. mutans strains and found that the nucleotide alignment of the collagen-binding domain was well conserved. We devised a PCR method for identifying the cnm gene, examined the prevalence of cnm-positive S. mutans strains in various mother–child groups, and assessed the significance of such strains for transmission and dental caries. The detection rate of cnm-positive strains was significantly lower in strains isolated from Japanese children in the 2000s (8.0 %) as compared to those isolated in the 1980s (15.8 %) (P<0.05). Furthermore, the presence of S. mutans possessing cnm in salivary specimens collected from 55 S. mutans-positive mother–child pairs was 40 and 32.7 % in the mothers and children, respectively. The frequency of cnm-positive children whose mothers were also positive was 72 %, which was significantly higher than that of cnm-positive children with negative mothers (P<0.0001, odds ratio 17.5). In addition, clinical parameters indicating dental caries were significantly increased in children with cnm-positive S. mutans in saliva (n=13), as compared to those with cnm-negative S. mutans (n=15) and S. mutans-negative children (n=20) (P<0.01). These results indicate that cnm-positive S. mutans strains are closely correlated with dental caries, while vertical transmission in cnm-positive mother–child pairs was also demonstrated.

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.

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