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1.
J Nephrol ; 36(5): 1401-1407, 2023 06.
Artículo en Inglés | MEDLINE | ID: mdl-37060438

RESUMEN

OBJECTIVE: The pathological types and long-term prognosis of glomerular diseases related to mercury exposure are unclear. This study retrospectively examined 41 cases of glomerulonephropathy caused by mercury-containing cosmetics. METHODOLOGY: Forty-one subjects with glomerular diseases presumably caused by mercury-containing cosmetics were selected. Clinical features, kidney biopsy, treatment, and follow-up data were collected. RESULTS: All patients were female with an average age of 39.4 ± 6.6 years at diagnosis. Median time of exposure to mercury-containing cosmetics was six months, and average urine mercury level was 66.80 ± 38.55ug/(g·Cr). Most patients presented with nephrotic syndrome. Renal histopathology showed membranous nephropathy in 22 patients (53.65%), minimal change disease in 13 patients (31.71%), IgA nephropathy with minimal change disease in 5 patients (12.20%), and focal segmental glomerulosclerosis in 1 patient. Median time of exposure to mercury was longer and the proportion of patients with autoantibodies (mainly antinuclear antibodies) was higher in patients with membranous nephropathy. Both blood phospholipase A2 receptor -Ab and kidney tissue phospholipase A2 receptor were negative. Thirty-six patients received glucocorticosteroids and/or immunosuppressants. Five patients were treated with an angiotensin receptor blocker, and nine patients were treated with chelation therapy. The median follow-up time was 40 months (range 27-94). All patients achieved complete remission, and the median time to complete remission was one month. They all successfully discontinued the drugs without relapsing; withdrawal time was 26 months. CONCLUSION: Membranous nephropathy was the most common pathological type in mercury-induced glomerular disease. Patients were sensitive to glucocorticosteroids and immunosuppressants and achieved complete remission quickly. Contrary to primary glomerulonephritides, patients with mercury-induced glomerular diseases had no relapses after withdrawal of the mercury containing cosmetics.


Asunto(s)
Cosméticos , Glomerulonefritis por IGA , Glomerulonefritis Membranosa , Mercurio , Nefrosis Lipoidea , Humanos , Femenino , Adulto , Persona de Mediana Edad , Masculino , Mercurio/efectos adversos , Glomerulonefritis Membranosa/inducido químicamente , Glomerulonefritis Membranosa/diagnóstico , Glomerulonefritis Membranosa/tratamiento farmacológico , Nefrosis Lipoidea/patología , Estudios Retrospectivos , Receptores de Fosfolipasa A2 , Cosméticos/efectos adversos , Pronóstico , Glomerulonefritis por IGA/patología , Inmunosupresores/efectos adversos
2.
Water Res ; 237: 119967, 2023 Jun 15.
Artículo en Inglés | MEDLINE | ID: mdl-37104934

RESUMEN

Ecological floating bed coupled with microbial electrochemical system (ECOFB-MES) has great application potential in micro-polluted water remediation yet limited by low electron transfer efficiency on the microbial/electrode interface. Here, an innovative cathode-enhanced EOCFB-MES was constructed with nano-Fe3O4 modification and applied for in-situ remediation both at lab scale (6 L, 62-day operation) and demonstration scale (2300 m2, 1-year operation). The cathode-enhanced ECOFB-MES exhibited superior removal in TOC (81.43 ± 2.05%), TN (85.12% ± 1.46%) and TP (59.80 ± 2.27%), much better than those of original ECOFB-MES and anode-enhanced ECOFB-MES in the laboratory test. Meanwhile, cathode-enhanced ECOFB-MES boosted current output by 33% than that of original ECOFB-MES, which made a great contribution to the improvement of ectopic electronic compensation for pollutant decontamination. Notably, cathode-enhanced ECOFB-MES presented high efficiency, stability and durability in the demonstration test, and fulfilled the average concentration of COD (9.5 ± 2.81 mg/L), TN (1.00 ± 0.21 mg/L) and TP (0.10 ± 0.04 mg/L) of effluent water to meet the Grade III (GB 3838-2002) with stable operation stage. Based on the KOSIM calculation, the removal loads of cathode-enhanced ECOFB-MES in carbon, nitrogen and phosphorus could reach 37.14 g COD/(d·m2), 2.62 g TN/(d·m2) and 0.55 g TP/(d·m2), respectively. According to the analysis of microbial communities and functional genes, the cathode modified by Fe3O4 made a sensible enrichment in electroactive bacteria (EAB) and nitrogen-converting bacteria (NCB) as well as facilitated the functional genes expression in electron transfer and nitrogen metabolism, resulting in the synergistic removal of carbon in sediment and nitrite in water. This study provided a brandnew technique reference for in-situ remediation of surface water in practical application.


Asunto(s)
Fósforo , Agua , Fósforo/análisis , Carbono , Electrodos , Nitrógeno/análisis
3.
Front Psychiatry ; 13: 976827, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36172516

RESUMEN

Background: Gastrointestinal (GI) symptoms can be observed in autism spectrum disorder (ASD) children. It is suggested that the gut microbiota and its metabolites are associated, not only with GI symptoms, but also with behaviors of ASD. The aim of this study was to explore the development context, research hotspots and frontiers of gut microbiota and ASD from January 1, 1980 to April 1, 2022 by bibliometric analysis. Materials and methods: Publications of ASD and gut microbiota research from 1 January 1980 to 1 April 2022 were retrieved from the Web of Science Core Collection (WoSCC). Publications and citations trends were analyzed by Excel 2010. CiteSpace was used to analyze countries/regions, authors, institutes, references, and keywords and to visualize the knowledge map. Results: A total of 1027 studies were retrieved, and 266 original articles were included after screening. The most published countries and institutes were the United States and King Saud University. Afaf El-Aansary published the most articles, while Finegold SM had the highest co-citations. Hotspots and emerging trends in this area may be indicated by co-cited references and keywords and their clusters, including "gut-brain axis," "behavior," "chain fatty acid," "brain," "feces," "propionic acid," "clostridium perfringens," and "species clostridium innocuum." Conclusion: The United States dominants the research in this field, which focuses on the alterations of gut microbiota composition and its metabolites, among which the roles of the genus Clostridium and metabolites of short-chain fatty acids, especially propionic acid, are priorities. Fecal microbiota transplantation (FMT) is a promising complementary therapy. In general, research in this area is sparse, but it still has great research prospects.

4.
Artículo en Inglés | MEDLINE | ID: mdl-35463096

RESUMEN

Triple-negative breast cancer (TNBC) is a highly aggressive subtype of breast cancer that is prone to recurrence and metastasis. Because of the lack of expression of estrogen receptor (ER) and progesterone receptor (PR) and human epidermal growth factor receptor 2 (HER2) in TNBC, treatment methods are greatly limited. In this study, the proliferation inhibition and apoptosis-inducing effects of PARP1 inhibitors in TNBC breast cancer cells and in vivo xenograft animal models were examined to investigate the molecular role of APE1 in PARP1-targeted therapy. In TNBC patients, the expression of APE1 and PARP1 were positively correlated, and high expression of APE1 and PARP1 was associated with poor survival of TNBC. Our results indicated that knockdown APE1 could increase the sensitivity of olaparib in the treatment of TNBC. In conclusion, the results of this study will not only clarify the molecular role of APE1 in PARP1-targeted therapy for TNBC but also provide a theoretical basis for the future clinical application of targeting APE1 and PARP1 in the treatment of refractory TNBC.

5.
BMJ Open ; 12(2): e055369, 2022 02 21.
Artículo en Inglés | MEDLINE | ID: mdl-35190437

RESUMEN

BACKGROUND: The incidence of chronic obstructive pulmonary disease (COPD) is high worldwide, and patients with COPD commonly suffer from mood disorders, such as symptoms of anxiety and depression. However, it is difficult to communicate with patients face to face to solve these psychological problems in the case of the fluctuations in symptoms of COPD and COVID-19 prevalence, which may lead to the fact that patients with COPD are more likely to suffer exacerbations, frequent readmissions and worse survival. Mindfulness-based interventions are a stress-reducing therapy with mindfulness at its core. Remote mindfulness-based interventions combine the advantages of high availability, accessibility, low cost and anonymity and can solve the barriers to access that many patients face when attending face-to-face programmes. Therefore, remote mindfulness-based interventions may be an effective way to improve the mental health of patients with COPD. METHODS AND ANALYSIS: We will search PubMed, Embase, Cochrane Library, CNKI, PsycNET, MEDLINE, Psychology & Behavioral Sciences Collection and Web of Science to select eligible studies that were published. The eligible studies will be screened, extracted and then the methodological quality will be evaluated independently by two reviewers. Review manager software V.5.3 software and Stata V.14.0 software will be used for meta-analysis. ETHICS AND DISSEMINATION: Ethical approval is not required for a systematic review protocol. Findings of the proposed systematic review will be disseminated through conference presentations and publication in a peer-reviewed journal. PROSPERO REGISTRATION NUMBER: CRD42021265286.


Asunto(s)
COVID-19 , Atención Plena , Enfermedad Pulmonar Obstructiva Crónica , Ansiedad/etiología , Ansiedad/terapia , Depresión/etiología , Depresión/terapia , Humanos , Metaanálisis como Asunto , Atención Plena/métodos , Enfermedad Pulmonar Obstructiva Crónica/complicaciones , Enfermedad Pulmonar Obstructiva Crónica/terapia , SARS-CoV-2 , Revisiones Sistemáticas como Asunto
6.
Psychiatry Res ; 304: 114137, 2021 10.
Artículo en Inglés | MEDLINE | ID: mdl-34365216

RESUMEN

This study aims to evaluate the efficacy of music therapy on anxiety from randomized controlled trials (RCTs). The following electronic databases were utilized for selecting eligible studies that were published from inception to March 2021: PubMed, Cochrane Library, PsycINFO, Medline, Web of Science, and Embase. Standard mean difference (SMD) with 95% confidence interval (CI) values were used to evaluate the efficacy of music therapy on anxiety. Thirty-two studies with 1,924 participants were included in the meta-analysis. Music therapy lasted an average of 7.5 sessions (range, 1-24 sessions), while the average follow-up duration was 7.75 weeks (range, 1-16 weeks). Music therapy significantly reduced anxiety compared to the control group at post-intervention (SMD = -0.36, 95% CI: -0.54 to -0.17, p < 0.05), but not at follow-up (SMD = -0.23, 95% CI: -0.53 to 0.08, p >0.05). Subgroup analysis found a significantly positive effect of music therapy on anxiety in < 60 and ≥ 60 age-group (SMD = -0.31, 95% CI: -0.52 to -0.09, p < 0.05; SMD = -0.45, 95% CI: -0.85 to -0. 05, p < 0.05), developed and developing country group (SMD = -0.28, 95% CI: -0.51 to -0.06, p < 0.05; SMD = -0.49, 95% CI: -0.80 to -0.17, p < 0.05), < 12 and ≥ 12 sessions group (SMD = -0.24, 95% CI: = -0.44 to -0.03, p < 0.05; SMD = -0.59, 95% CI: -0.95 to -0.22, p < 0.05), respectively. Our study indicated that music therapy can significantly improve anxiety during treatment. But given that only eight RCTs reported the effects of music therapy at follow-up and the duration of follow-up was inconsistent, further researches are needed on the lasting effects after the intervention is discontinued.


Asunto(s)
Musicoterapia , Ansiedad/terapia , Trastornos de Ansiedad , Humanos , Ensayos Clínicos Controlados Aleatorios como Asunto
7.
Psychiatry Res ; 293: 113464, 2020 11.
Artículo en Inglés | MEDLINE | ID: mdl-33002835

RESUMEN

To evaluate the efficacy of adjunct music therapy on patients with schizophrenia, we conducted a meta-analysis of currently available randomized controlled trials and controlled clinical trials. Eight electronic databases (CNKI, PubMed, EMBASE, Cochrane Library, PsycINFO, Web of Science, Psychology and behavioural Sciences Collection, and Medline) were systematically searched from inception to January 2020. Standard mean difference (SMD) with 95% confidence interval (CI) values were used to evaluate the effects of music therapy. Finally, we selected eighteen studies comprising 1,212 participants comparing with control conditions. The meta-analysis demonstrated that adjunct music therapy significantly improved total symptoms (SMD = -0.48, 95%CI: -0.74 to -0.22), negative symptoms (SMD=-0.56, 95%CI: -0.72 to -0.40), depression symptoms (SMD = -0.35, 95% CI: -0.54 to -0.17), and quality of life (SMD = 0.35, 95%CI: 0.07 to 0.62) in people with schizophrenia compared with the control group. In addition, the meta-analysis indicated no publication bias for total symptoms, negative symptoms, and positive symptoms. The sensitivity analysis showed that the result was reliable. But the quality of evidence is still low, more well-designed studies with larger sample size and high quality are needed to confirm the efficiency of adjunct music therapy in treating schizophrenia.


Asunto(s)
Musicoterapia/métodos , Esquizofrenia/terapia , Psicología del Esquizofrénico , Terapia Combinada/métodos , Terapia Combinada/psicología , Femenino , Humanos , Masculino , Calidad de Vida/psicología , Esquizofrenia/diagnóstico , Resultado del Tratamiento
8.
Future Med Chem ; 12(2): 111-126, 2020 01.
Artículo en Inglés | MEDLINE | ID: mdl-31718309

RESUMEN

Aim: The EGF receptor (EGFR) is overexpressed in multiple epithelial-derived cancers and is considered to be a vital target closely associated with cancer therapy. In this study, a series of novel anthraquinone-quinazoline hybrids targeting several vital sites for cancer therapy were designed and synthesized. Methodology & results: Most of the synthesized hybrids demonstrated excellent antiproliferative activity and downregulation of the expression of EGFR. The most promising compound 7d showed the strongest antiproliferation activity; this compound significantly downregulated the expression of p-EGFR protein, induced a remarkable apoptosis effect, promoted the rearrangement of F-actin filaments and destruction of cytoskeleton, induced DNA damage and enhanced radiosensitivity of A549 cells. Conclusion: The novel anthraquinone-quinazoline hybrid 7d emerges as an anticancer drug candidate with promising multitargeted biological activities.


Asunto(s)
Antraquinonas/farmacología , Antineoplásicos/farmacología , Inhibidores de Proteínas Quinasas/farmacología , Quinazolinas/farmacología , Antraquinonas/química , Antineoplásicos/síntesis química , Antineoplásicos/química , Apoptosis/efectos de los fármacos , Proliferación Celular/efectos de los fármacos , Daño del ADN , Evaluación Preclínica de Medicamentos , Ensayos de Selección de Medicamentos Antitumorales , Receptores ErbB/antagonistas & inhibidores , Receptores ErbB/metabolismo , Humanos , Estructura Molecular , Inhibidores de Proteínas Quinasas/síntesis química , Inhibidores de Proteínas Quinasas/química , Quinazolinas/química , Células Tumorales Cultivadas
9.
Nat Commun ; 10(1): 4971, 2019 10 31.
Artículo en Inglés | MEDLINE | ID: mdl-31672964

RESUMEN

Pu-erh tea displays cholesterol-lowering properties, but the underlying mechanism has not been elucidated. Theabrownin is one of the most active and abundant pigments in Pu-erh tea. Here, we show that theabrownin alters the gut microbiota in mice and humans, predominantly suppressing microbes associated with bile-salt hydrolase (BSH) activity. Theabrownin increases the levels of ileal conjugated bile acids (BAs) which, in turn, inhibit the intestinal FXR-FGF15 signaling pathway, resulting in increased hepatic production and fecal excretion of BAs, reduced hepatic cholesterol, and decreased lipogenesis. The inhibition of intestinal FXR-FGF15 signaling is accompanied by increased gene expression of enzymes in the alternative BA synthetic pathway, production of hepatic chenodeoxycholic acid, activation of hepatic FXR, and hepatic lipolysis. Our results shed light into the mechanisms behind the cholesterol- and lipid-lowering effects of Pu-erh tea, and suggest that decreased intestinal BSH microbes and/or decreased FXR-FGF15 signaling may be potential anti-hypercholesterolemia and anti-hyperlipidemia therapies.


Asunto(s)
Ácidos y Sales Biliares/metabolismo , Catequina/análogos & derivados , Alimentos Fermentados , Microbioma Gastrointestinal/efectos de los fármacos , Hipercolesterolemia/metabolismo , , Adulto , Amidohidrolasas/metabolismo , Animales , Catequina/farmacología , Ácido Quenodesoxicólico/metabolismo , Colesterol/metabolismo , Dieta Alta en Grasa , Trasplante de Microbiota Fecal , Factores de Crecimiento de Fibroblastos/efectos de los fármacos , Factores de Crecimiento de Fibroblastos/metabolismo , Microbioma Gastrointestinal/genética , Microbioma Gastrointestinal/fisiología , Humanos , Íleon/efectos de los fármacos , Íleon/metabolismo , Lipogénesis/efectos de los fármacos , Hígado/efectos de los fármacos , Hígado/metabolismo , Masculino , Metabolómica , Ratones , Extractos Vegetales/farmacología , ARN Ribosómico 16S , Receptores Citoplasmáticos y Nucleares/efectos de los fármacos , Receptores Citoplasmáticos y Nucleares/metabolismo , Transducción de Señal , Adulto Joven
10.
Circ Arrhythm Electrophysiol ; 12(4): e007097, 2019 04.
Artículo en Inglés | MEDLINE | ID: mdl-30939909

RESUMEN

BACKGROUND: Kv1.5 (Potassium voltage-gated channel subfamily A member 5) has been regarded as a promising target of interventions for atrial fibrillation (AF). SNX17 (sorting nexin 17), a member of the SNXs (sorting nexin family), regulates the intracellular trafficking of membrane proteins through its FERM (four-point-one, ezrin, radixin, moesin) domain. However, whether SNX17 regulates the trafficking process of Kv1.5 remains unknown. METHODS: A SNX17 knockout rat line was generated to test the role of SNX17 in atrial electrophysiology. The protein expression of SNX17 and membrane ion channels was detected by Western blotting. Electrophysiology changes in the atrial tissue and myocytes were analyzed by optical mapping and patch clamp, respectively. Acetylcholine and electrical stimulation were used to induce AF, and ECG recording was adopted to assess the influence of SNX17 deficiency on AF susceptibility. The spatial relationship between Kv1.5 and SNX17 was evaluated by immunostaining and confocal scanning, and the functional region of SNX17 regulating Kv1.5 trafficking was identified using plasmids with truncated SNX17 domains. RESULTS: Embryonic death occurred in homozygous SNX17 knockout rats. SNX17 heterozygous rats survived, and the level of the SNX17 protein in the atrium was decreased by ≈50%. SNX17 deficiency increased the membrane expression of Kv1.5 and atria-specific ultrarapid delayed rectifier outward potassium current ( IKur) density, resulting in a shortened action potential duration, and eventually contributing to AF susceptibility. Mechanistically, SNX17 facilitated the endocytic sorting of Kv1.5 from the plasma membrane to early endosomes via the FERM domain. CONCLUSIONS: SNX17 mediates susceptibility to AF by regulating endocytic sorting of the Kv1.5 channel through the FERM domain. SNX17 could be a potential target for the development of new drugs for AF.


Asunto(s)
Fibrilación Atrial/fisiopatología , Canales de Potasio con Entrada de Voltaje/fisiología , Nexinas de Clasificación/fisiología , Animales , Western Blotting , Electrocardiografía , Técnicas Electrofisiológicas Cardíacas , Células HEK293 , Humanos , Microscopía Confocal , Miocitos Cardíacos/metabolismo , Técnicas de Placa-Clamp , Ratas , Ratas Sprague-Dawley
11.
Clin Nephrol ; 91(3): 180-186, 2019 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-30614440

RESUMEN

AIMS: To investigate the clinicopathological features and outcomes of adefovir dipivoxil (ADV)-related renal impairment in Chinese patients. MATERIALS AND METHODS: Clinical, pathological, and follow-up data from 15 patients with ADV-related renal impairment were studied. Proximal renal tubular dysfunction (PRTD) was defined by the presence of at least two of the following four abnormalities: hypophosphatemia, hypouricemia, nondiabetic glucosuria, and proteinuria. RESULTS: All patients were treated for 3 - 15 (mean 6.7) years with daily ADV of 10 mg. Renal impairment manifested as PRTD (12, 80%), elevated serum creatinine (12, 80%), and hematuria (2, 13.3%). Mild to moderate tubulointerstitial injury primarily affecting the proximal tubules by light microscopy, and enlarged, dysmorphic mitochondria with loss and disorientation of cristae by electron microscope were identified in all of our cases. Four patients had pathological evidence of IgA nephropathy. The phosphorus, serum uric acid, and creatinine levels were normalized after ADV cessation in 66.7% (8/12) of affected patients, 27.3% (3/11) of affected patients, and 25% (3/12) of affected patients, respectively; proteinuria was eliminated in 7 of 13 affected patients (53.8%); and glucosuria and hematuria both disappeared in all affected patients. These abnormalities had hardly any recovery, and even aggravated with new-onset glucosuria, new-onset hematuria in 3 patients who replaced ADV with tenofovir. CONCLUSION: Nephrotoxicity developed in patients undergoing long-term ADV treatment and was partially reversible after drug cessation. Tubulointerstitial lesions and heteromorphic mitochondria were the predominant pathological changes. Patients with ADV-induced renal impairment should replace ADV with other antiviral agents other than tenofovir.
.


Asunto(s)
Adenina/análogos & derivados , Antivirales/efectos adversos , Organofosfonatos/efectos adversos , Insuficiencia Renal/inducido químicamente , Insuficiencia Renal/patología , Adenina/efectos adversos , Adulto , Creatinina/sangre , Femenino , Glucosuria/inducido químicamente , Hematuria/inducido químicamente , Hepatitis B Crónica/tratamiento farmacológico , Humanos , Hipofosfatemia/inducido químicamente , Túbulos Renales Proximales/patología , Túbulos Renales Proximales/fisiopatología , Masculino , Persona de Mediana Edad , Mitocondrias/patología , Fósforo/sangre , Proteinuria/inducido químicamente , Insuficiencia Renal/fisiopatología , Ácido Úrico/sangre
12.
Appl Biochem Biotechnol ; 185(2): 464-475, 2018 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-29181763

RESUMEN

Prunus cerasifera has a rich resource and a weak utilization rate and its biological functions have been investigated. We found that the contents of total phenol (TP) in leaves and branches of Prunus cerasifera were 117.8 ± 8.8 and 100.04 ± 0.9 mg/g, respectively; the contents of soluble condensed tannin (SCT) were 73.95 ± 0.9 and 78.65 ± 4.1 mg/g, respectively; the structure of SCT containing afzelechin/epiafzelechin, catechin/epicatechin, and atechin/epicatechin as the main units and the SCT from leaves and branches exhibited better anti-tyrosinase and antioxidant activities. This study could clarify Prunus cerasifera condensed tannin resource availability and lay a theoretical foundation for its development as a natural antioxidant and tyrosinase inhibitor.


Asunto(s)
Antioxidantes , Inhibidores Enzimáticos , Monofenol Monooxigenasa/antagonistas & inhibidores , Hojas de la Planta/química , Proantocianidinas , Prunus domestica/química , Antioxidantes/química , Antioxidantes/aislamiento & purificación , Inhibidores Enzimáticos/química , Inhibidores Enzimáticos/aislamiento & purificación , Proantocianidinas/química , Proantocianidinas/aislamiento & purificación
13.
Water Res ; 117: 87-94, 2017 06 15.
Artículo en Inglés | MEDLINE | ID: mdl-28390238

RESUMEN

The accelerated use of iron oxide nanoparticles (IONPs) and multi-wall carbon nanotubes (MWCNTs) in the consumer and industrial sectors has triggered the need to understand their potential environmental impact. The response of anaerobic granular sludge (AGS) to IONPs and MWCNTs during the anaerobic digestion of beet sugar industrial wastewater (BSIW) was investigated in this study. The IONPs increased the biogas and subsequent CH4 production rates in comparison with MWCNTs and the control samples. This might be due to the utilization of IONPs and MWCNTs as conduits for electron transfer toward methanogens. The MWCNTs majorly enriched the bacterial growth, while IONP enrichment mostly benefitted the archaea population. Furthermore, scanning electron microscopy and confocal laser scanning microscopy revealed that AGS produced extracellular polymeric substances, which interacted with the IONPs and MWCNTs. This provided cell protection and prevented the nanoparticles from piercing through the membranes and thus cytotoxicity. The results provide useful information and insights on the adjustment of anaerobic microorganisms to the natural complex environment based on nanoparticles infiltration.


Asunto(s)
Aguas del Alcantarillado/microbiología , Aguas Residuales/microbiología , Beta vulgaris , Reactores Biológicos/microbiología , Nanopartículas , Nanotubos de Carbono/toxicidad
14.
J Food Sci ; 80(12): M2917-24, 2015 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-26556681

RESUMEN

In order to reveal the inhibitory effects of cinnamaldehyde, citral, and eugenol on aflatoxin biosynthesis, the expression levels of 5 key aflatoxin biosynthetic genes were evaluated by real-time PCR. Aspergillus flavus growth and AFB1 production were completely inhibited by 0.80 mmol/L of cinnamaldehyde and 2.80 mmol/L of citral. However, at lower concentration, cinnamaldehyde (0.40 mmol/L), eugenol (0.80 mmol/L), and citral (0.56 mmol/L) significantly reduced AFB1 production with inhibition rate of 68.9%, 95.4%, and 41.8%, respectively, while no effect on fungal growth. Real-time PCR showed that the expressions of aflR, aflT, aflD, aflM, and aflP were down-regulated by cinnamaldehyde (0.40 mmol/L), eugenol (0.80 mmol/L), and citral (0.56 mmol/L). In the presence of cinnamaldehyde, AflM was highly down-regulated (average of 5963 folds), followed by aflP, aflR, aflD, and aflT with the average folds of 55, 18, 6.5, and 5.8, respectively. With 0.80 mmol/L of eugenol, aflP was highly down-regulated (average of 2061-folds), followed by aflM, aflR, aflD, and aflT with average of 138-, 15-, 5.2-, and 4.8-folds reduction, respectively. With 0.56 mmol/L of citral, aflT was completely inhibited, followed by aflM, aflP, aflR, and aflD with average of 257-, 29-, 3.5-, and 2.5-folds reduction, respectively. These results suggest that the reduction in AFB1 production by cinnamaldehyde, eugenol, and citral at low concentration may be due to the down-regulations of the transcription level of aflatoxin biosynthetic genes. Cinnamaldehyde and eugenol may be employed successfully as a good candidate in controlling of toxigenic fungi and subsequently contamination with aflatoxins in practice.


Asunto(s)
Acroleína/análogos & derivados , Aflatoxina B1/biosíntesis , Aspergillus flavus/efectos de los fármacos , Eugenol/farmacología , Expresión Génica/efectos de los fármacos , Genes Fúngicos , Monoterpenos/farmacología , Acroleína/farmacología , Monoterpenos Acíclicos , Aflatoxinas , Análisis del Polimorfismo de Longitud de Fragmentos Amplificados , Aspergillus flavus/genética , Aspergillus flavus/metabolismo , Reacción en Cadena en Tiempo Real de la Polimerasa
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