RESUMO
OBJECTIVE: This study was to investigate the role of serum Klotho, fetuin-A, and Matrix Gla Protein (MGP) in Coronary Artery Calcification (CAC) in patients with Maintenance Hemodialysis (MHD) and their predictive value for CAC. METHODS: 100 patients receiving MHD were selected. Serum Klotho, fetuin-A, and MGP levels were detected by ELISA. CAC scores were assessed by coronary CT scan. Multifactor analysis was used to evaluate the risk factors affecting CAC. The ability of serum Klotho, fetuin-A, and MGP levels to diagnose CAC was evaluated by receiver operating characteristic curves. RESULTS: Serum Klotho, fetuin-A, and MGP were independent risk factors for CAC. Serum Klotho, fetuin-A, and MGP were valuable in the diagnosis of CAC in MHD patients. CONCLUSION: There is a close relationship between Klotho, fetuin-A, and MGP levels in MHD patients and CAC.
Assuntos
Biomarcadores , Proteínas de Ligação ao Cálcio , Doença da Artéria Coronariana , Proteínas da Matriz Extracelular , Glucuronidase , Proteínas Klotho , Proteína de Matriz Gla , Diálise Renal , Calcificação Vascular , alfa-2-Glicoproteína-HS , Humanos , Diálise Renal/efeitos adversos , Masculino , Feminino , Proteínas de Ligação ao Cálcio/sangue , Pessoa de Meia-Idade , alfa-2-Glicoproteína-HS/análise , alfa-2-Glicoproteína-HS/metabolismo , Doença da Artéria Coronariana/sangue , Doença da Artéria Coronariana/diagnóstico por imagem , Glucuronidase/sangue , Proteínas da Matriz Extracelular/sangue , Biomarcadores/sangue , Calcificação Vascular/sangue , Calcificação Vascular/diagnóstico por imagem , Idoso , Fatores de Risco , Ensaio de Imunoadsorção Enzimática , Adulto , Curva ROC , Calcinose/sangue , Calcinose/diagnóstico por imagem , Calcinose/etiologia , Valor Preditivo dos TestesRESUMO
Thermophilic semi-continuous composting (TSC) is effective for kitchen waste (KW) treatment, but large amounts of NH3-rich odorous gas are generated. This study proposes a TSC-biofiltration (BF) two-stage process. Compost from the front-end TSC was used as the packing material in the BF to remove NH3 from the exhaust gas. The BF process was effective in removing up to 83.7 % of NH3, and the NH3 content was reduced to < 8 ppm. Seven days of BF improved the quality of the product from TSC by enhancing the germination index to 134.6 %, 36.5 % higher than that in the aerated-only group. Microbial community analysis revealed rapid proliferation and eventual dominance in the BF of members related to compost maturation and the nitrogen cycle from Actinobacteria, Proteobacteria, Chloroflexi, and Bacteroidetes. The results suggest that the TSC-BF two-stage process is effective in reducing NH3 emissions from TSC and improving compost quality.
Assuntos
Amônia , Compostagem , Fertilizantes , Compostagem/métodos , Filtração/métodos , Eliminação de Resíduos/métodos , Temperatura , Solo/química , Bactérias/metabolismoRESUMO
To explore an effective decentralized kitchen waste (KW) treatment system, the performance and bacterial community succession of thermophilic semi-continuous composting (TSC) of KW followed by static stacking (SS) was studied. A daily feeding ratio of 10% ensured stable performance of TSC using an integrated automatic reactor; the efficiencies of organic matter degradation and seed germination index (GI) reached 80.88% and 78.51%, respectively. SS for seven days further promoted the quality of the compost by improving the GI to 91.58%. Alpha- and beta-diversity analyses revealed significant differences between the bacterial communities of TSC and SS. Firmicutes, Actinobacteria, Chloroflexi, Gemmatimonadetes, and Myxococcota were dominant during the TSC of KW, whereas the members of Proteobacteria and Bacteroidetes responsible for product maturity rapidly proliferated during the subsequent SS and ultimately dominated the compost with Firmicutes and Actinobacteria. These results provide new perspectives for decentralized KW treatment using TSC for practical applications.