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1.
J Sci Food Agric ; 104(7): 4251-4259, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38311866

RESUMEN

BACKGROUND: Hairtail (Trichiurus haumela) surimi exhibits poor gelation properties and a dark gray appearance, which hinder its utilization in high-quality surimi gel products. The effect of Pickering emulsions stabilized by myofibrillar proteins (MPE) on the gel properties of hairtail surimi has been unclear. In particular, the impact of MPE under NaCl and KCl treatments on the quality of hairtail surimi gels requires further elucidation. RESULTS: Pickering emulsions stabilized by myofibrillar proteins and treated with NaCl or KCl (Na-MPE, K-MPE) were added to hairtail surimi in amounts of 10-70 g kg-1. The addition of 50 g kg-1 Na-MPE and K-MPE improved the gel strength, textural properties, whiteness, and water-holding capacity (WHC) of hairtail surimi. The relative content of ß-turn and ß-sheet in the surimi gels increased and the relative content of random coils and α-helix decreased with the addition of oil. The addition of Na-MPE and K-MPE did not affect the secondary structure of surimi gels but stimulated the gelation of hairtail surimi gels. Hairtail surimi containing K-MPE demonstrated similar performance in terms of hardness, microstructure, and WHC compared with the addition of Na-MPE. CONCLUSION: The quality of hairtail surimi gels can be improved by the addition of Na-MPE or K-MPE. The K-MPE proved to be an effective option for enhancing the properties of hairtail surimi gels at 50 g kg-1 to replace Na-MPE. © 2024 Society of Chemical Industry.


Asunto(s)
Proteínas de Peces , Manipulación de Alimentos , Proteínas de Peces/química , Emulsiones , Cloruro de Sodio , Productos Pesqueros/análisis , Geles/química
2.
Opt Express ; 31(3): 3479-3489, 2023 Jan 30.
Artículo en Inglés | MEDLINE | ID: mdl-36785340

RESUMEN

Quantum correlation, as an intrinsic property of quantum mechanics, has been widely employed to test the fundamental physical principles and explore the quantum-enhanced technologies. However, such correlation would be drowned and even destroyed in the conditions of high levels of loss and noise, which drops into the classical realm and renders quantum advantage ineffective. Especially in low light conditions, conventional linear classifiers are unable to extract and distinguish quantum and classical correlations with high accuracy. Here we experimentally demonstrate the classification of quantum correlation using deep learning to meet the challenge in the quantum imaging scheme. We design the convolutional neural network to learn and classify the correlated photons efficiently with only 0.1 signal photons per pixel. We show that decreasing signal intensity further weakens the correlation and makes an accurate linear classification impossible, while the deep learning method has a strong robustness of such task with the accuracy of 99.99%. These results open up a new perspective to optimize the quantum correlation in low light conditions, representing a step towards diverse applications in quantum-enhanced measurement scenarios, such as super-resolution microscope, quantum illumination, etc.

3.
Liver Int ; 43(4): 865-877, 2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-36627827

RESUMEN

BACKGROUND AND AIMS: Antibiotics (ATBx) and acetaminophen (APAP) are widely used worldwide. APAP is the most common cause of acute liver injury (ALI) and might be used in combination with ATBx in clinics. However, the impact of ATBx on APAP-induced ALI has rarely been studied. METHODS: First, we compared the effects of seven ATBx on APAP-induced ALI. Then, we analysed faecal, serum and liver samples to investigate the impact of the gut microbiota on this process. Finally, we assessed the role of short-chain fatty acids in this process. RESULTS: In this work, we found that the ALI was significantly aggravated in the mice treated with ampicillin (Amp) instead of other ATBx. Amp exposure reduced the diversity and altered the composition of gut microbiota. The altered gut microbiota aggravated APAP-induced ALF, which was proven by faecal microbiota transplantation from ATBx-treated mice. Metagenomic analysis showed a significantly decreased Lactobacillus abundance in Amp-treated mice. Gavage with Lactobacillus, especially Lactobacillus rhamnosus, significantly reversed the severer ALF induced by APAP and Amp. Moreover, Lactobacillus supplementation increased butyrate-producing clostridia and lowered butyrate levels in Amp-treated mice. In accordance, butyrate supplementation could also alleviate Amp-aggravated ALI. In addition, inhibition of nuclear factor erythroid 2-related factor 2 counteracted the protective effect of butyrate on aggravated ALI induced by Amp and APAP. CONCLUSION: Together, this study revealed a potential health impact of Amp that may exacerbate liver damage when co-exposed to excess APAP.


Asunto(s)
Enfermedad Hepática Inducida por Sustancias y Drogas , Microbioma Gastrointestinal , Animales , Ratones , Acetaminofén/toxicidad , Butiratos/farmacología , Hígado , Ampicilina/efectos adversos , Enfermedad Hepática Inducida por Sustancias y Drogas/etiología , Ratones Endogámicos C57BL
4.
Pharmacol Res ; 196: 106902, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-37657657

RESUMEN

Nonalcoholic steatohepatitis (NASH) is the major cause of liver dysfunction. Animal and population studies have shown that mitochondrial aldehyde dehydrogenase (ALDH2) is implicated in fatty liver disease. However, the role of ALDH2 in NASH and the underlying mechanisms remains unclear. To address this issue, ALDH2 knockout (ALDH2-/-) mice and wild-type littermate mice were fed a methionine-and choline-deficient (MCD) diet to induce a NASH model. Fecal, serum, and liver samples were collected and analyzed to investigate the impact of the gut microbiota and bile acids on this process. We found that MCD-fed ALDH2-/- mice exhibited increased serum pro-inflammation cytokines, hepatic inflammation and fat accumulation than their wild-type littermates. MCD-fed ALDH2-/- mice exhibited worsened MCD-induced intestinal inflammation and barrier damage, and gut microbiota disorder. Furthermore, mice receiving microbiota from MCD-fed ALDH2-/- mice had increased severity of NASH compared to those receiving microbiota from MCD-fed wild-type mice. Notably, the intestinal Lactobacillus was significantly reduced in MCD-fed ALDH2-/- mice, and gavage with Lactobacillus cocktail significantly improved MCD-induced NASH. Finally, we found that ALDH2-/- mice had reduced levels of bile salt hydrolase and specific bile acids, especially lithocholic acid (LCA), accompanied by downregulated expression of the intestinal FXR-FGF15 pathway. Supplementation of LCA in ALDH2-/- mice upregulated intestinal FXR-FGF15 pathway and alleviated NASH. In summary, ALDH2 plays a critical role in the development of NASH through modulation of gut microbiota and bile acid. The findings suggest that supplementing with Lactobacillus or LCA could be a promising therapeutic approach for treating NASH exacerbated by ALDH2 deficiency.

5.
J Nutr ; 152(11): 2429-2440, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-36774109

RESUMEN

BACKGROUND: The importance of the composition of an energy-restricted diet in the treatment of metabolic syndrome (MetS) is unknown. OBJECTIVES: In this study we aimed to investigate the benefits of a novel dietary treatment (50% calorie restriction diet composed of yogurt, fruit, and vegetables [CR-YD]) in mice with MetS. METHODS: Forty 7-wk-old male C57BL/6 J mice were randomly assigned to 4 groups (n = 10/group) that were fed for 14 wk ad libitum with a normal diet (ND; 10%:70%:20% energy from fat: carbohydrate: protein) or for 12 wk with a high-fat diet (HFD; 60:20:20) or the HFD followed by 2 wk of feeding with a 50% calorie-restricted HFD (CR-HFD) or YD (CR-YD, 21.2%:65.4%:13.4% energy). Body weight, fat deposition, hepatic steatosis, serum concentrations of inflammatory biomarkers, and glucose homeostasis were assessed. Fecal microbiota transplantation (FMT) was used to validate the roles of gut microbiota in MetS. RESULTS: The HFD group had 50% greater body weight and 475% greater fat deposition than the ND group (P < 0.05). Compared with the HFD group, the CR-HFD and CR-YD groups had 22% and 31% lower body weight and 49% and 75% less fat deposition, respectively (P < 0.05). Compared with the CR-HFD group, the CR-YD group had 11% lower body weight, 96% less fat deposition, 500% less hepatic steatosis, 75% lower glucose, and 450% more hepatic Akkermansia bacteria (P < 0.05). The CR-YD group also had 50% lower histopathology scores and 1.35-fold higher levels of Claudin4 than the CR-HFD group (P < 0.05). The HFD + CR-YD fecal group had 10.6% lower body weight, 119% lower steatosis, and 17.9% lower glucose (P < 0.05) than the HFD + CR-HFD fecal group. CONCLUSIONS: Compared with CR alone, the CR-YD diet has a better therapeutic effect in mice with HFD-induced MetS.


Asunto(s)
Hígado Graso , Microbioma Gastrointestinal , Síndrome Metabólico , Masculino , Animales , Ratones , Dieta Alta en Grasa/efectos adversos , Verduras , Síndrome Metabólico/terapia , Obesidad/metabolismo , Frutas , Yogur , Ratones Endogámicos C57BL , Peso Corporal , Glucosa/farmacología
6.
Opt Express ; 29(18): 28124-28133, 2021 Aug 30.
Artículo en Inglés | MEDLINE | ID: mdl-34614951

RESUMEN

Optical underwater target imaging and detection have been a tough but significant challenge in deep-sea exploration. Distant reflected signals drown in various underwater noises due to strong absorption and scattering, resulting in degraded image contrast and reduced detection range. Single-photon feature operating at the fundamental limit of the classical electromagnetic waves can broaden the realm of quantum technologies. Here we experimentally demonstrate a thresholded single-photon imaging and detection scheme to extract photon signals from the noisy underwater environment. We reconstruct the images obtained in a high-loss underwater environment by using photon-limited computational algorithms. Furthermore, we achieve a capability of underwater detection down to 0.8 photons per pulse at Jerlov type III water up to 50 meters, which is equivalent to more than 9 attenuation lengths. The results break the limits of classical underwater imaging and detection and may lead to many quantum-enhanced applications, like air-to-sea target tracking and deep-sea optical exploration.

7.
Pharmacol Res ; 170: 105726, 2021 08.
Artículo en Inglés | MEDLINE | ID: mdl-34126228

RESUMEN

Calorie restriction can modulate the gut microbiota and protect against many diseases including ischemic stroke. However, the role of calorie-restriction-induced microbiota alteration remained unknown in ischemic stroke rehabilitation. Here we conducted 30% reduction of caloric intake on mice for four weeks, to evaluate its role on ischemic stroke rehabilitation. Significantly, this calorie restriction led to better long-term rehabilitation in comparison of normal control. Notably, the transplantation of gut microbiome from calorie-restriction-treated mice to post-stroke mice was eligible to obtain better long-term rehabilitation of stroke mice. Bifidobacterium identified by 16 S ribosomal RNA sequencing were enriched in those of calorie-restriction mice. Then we administrated Bifidobacterium to stroke mice and found Bifidobacterium treatment could successfully improve the long-term rehabilitation of cerebral ischemia mice. Furthermore, the metabolomics analysis revealed a panel of upshifting metabolites, suggesting that calorie restriction greatly altered the gut microbiota composition and its metabolism. Hence, we discovered the novel effect of CR on long-term rehabilitation of ischemic stroke and the underlying role of gut microbiota, which might provide novel thoughts for the clinical post-stroke rehabilitation.


Asunto(s)
Bacterias/crecimiento & desarrollo , Eje Cerebro-Intestino , Encéfalo/fisiopatología , Restricción Calórica , Microbioma Gastrointestinal , Accidente Cerebrovascular Isquémico/rehabilitación , Rehabilitación de Accidente Cerebrovascular , Animales , Bacterias/metabolismo , Encéfalo/metabolismo , Modelos Animales de Enfermedad , Disbiosis , Accidente Cerebrovascular Isquémico/metabolismo , Accidente Cerebrovascular Isquémico/microbiología , Accidente Cerebrovascular Isquémico/fisiopatología , Ratones , Recuperación de la Función , Factores de Tiempo
8.
Molecules ; 26(3)2021 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-33535494

RESUMEN

Near-infrared spectroscopy (NIRS) combined with pattern recognition technique has become an important type of non-destructive discriminant method. This review first introduces the basic structure of the qualitative analysis process based on near-infrared spectroscopy. Then, the main pretreatment methods of NIRS data processing are investigated. Principles and recent developments of traditional pattern recognition methods based on NIRS are introduced, including some shallow learning machines and clustering analysis methods. Moreover, the newly developed deep learning methods and their applications of food quality analysis are surveyed, including convolutional neural network (CNN), one-dimensional CNN, and two-dimensional CNN. Finally, several applications of these pattern recognition techniques based on NIRS are compared. The deficiencies of the existing pattern recognition methods and future research directions are also reviewed.


Asunto(s)
Análisis de los Alimentos/métodos , Calidad de los Alimentos , Redes Neurales de la Computación , Reconocimiento de Normas Patrones Automatizadas/métodos , Espectroscopía Infrarroja Corta/métodos , Análisis Discriminante , Humanos
9.
Molecules ; 27(1)2021 Dec 28.
Artículo en Inglés | MEDLINE | ID: mdl-35011406

RESUMEN

The application of chitosan (CS) and whey protein (WP) alone or in combination in 3D/4D printing has been well considered in previous studies. Although several excellent reviews on additive manufacturing discussed the properties and biomedical applications of CS and WP, there is a lack of a systemic review about CS and WP bio-inks for 3D/4D printing applications. Easily modified bio-ink with optimal printability is a key for additive manufacturing. CS, WP, and WP-CS complex hydrogel possess great potential in making bio-ink that can be broadly used for future 3D/4D printing, because CS is a functional polysaccharide with good biodegradability, biocompatibility, non-immunogenicity, and non-carcinogenicity, while CS-WP complex hydrogel has better printability and drug-delivery effectivity than WP hydrogel. The review summarizes the current advances of bio-ink preparation employing CS and/or WP to satisfy the requirements of 3D/4D printing and post-treatment of materials. The applications of CS/WP bio-ink mainly focus on 3D food printing with a few applications in cosmetics. The review also highlights the trends of CS/WP bio-inks as potential candidates in 4D printing. Some promising strategies for developing novel bio-inks based on CS and/or WP are introduced, aiming to provide new insights into the value-added development and commercial CS and WP utilization.


Asunto(s)
Materiales Biocompatibles , Quitosano/química , Industria de Alimentos , Tinta , Impresión Tridimensional , Proteína de Suero de Leche/química , Antocianinas/química , Geles/química , Probióticos/administración & dosificación , Probióticos/química
10.
Molecules ; 26(1)2020 Dec 31.
Artículo en Inglés | MEDLINE | ID: mdl-33396532

RESUMEN

Chitosan, a biopolymer possessing numerous interesting bioactivities and excellent technological properties, has received great attention from scientists in different fields including the food industry, pharmacy, medicine, and environmental fields. A series of recent studies have reported exciting results about improvement of the properties of chitosan using the Maillard reaction. However, there is a lack of a systemic review about the preparation, bioactivities and applications in food industry of chitosan-based Maillard reaction products (CMRPs). The presence of free amino groups in chitosan allows it to acquire some stronger or new functional properties via the Maillard reaction. The present review aims to focus on the current research status of synthesis, optimization and structural identification of CMRPs. The applications of CMRPs in the food industry are also discussed according to their biological and technological properties such as antioxidant, antimicrobial activities and inducing conformational changes of allergens in food. Some promising directions for future research are proposed in this review, aiming to provide theoretical guidance for the further development of chitosan and its derivatives.


Asunto(s)
Antiinfecciosos/química , Antioxidantes/química , Quitosano/química , Industria de Procesamiento de Alimentos/métodos , Humanos , Reacción de Maillard
11.
Phys Rev Lett ; 122(19): 193903, 2019 May 17.
Artículo en Inglés | MEDLINE | ID: mdl-31144968

RESUMEN

Topology manifesting in many branches of physics deepens our understanding on state of matters. Topological photonics has recently become a rapidly growing field since artificial photonic structures can be well designed and constructed to support topological states, especially a promising large-scale implementation of these states using photonic chips. Meanwhile, due to the inapplicability of Hall conductance to photons, it is still an elusive problem to directly measure the integer topological invariants and topological phase transitions in photonic system. Here, we present a direct observation of topological winding numbers by using bulk-state photon dynamics on a chip. Furthermore, we for the first time experimentally observe the topological phase transition points via single-photon dynamics. The integrated topological structures, direct measurement in the single-photon regime and strong robustness against disorder add the key elements into the toolbox of "quantum topological photonics" and may enable topologically protected quantum information processing in large scale.

12.
Future Oncol ; 15(21): 2503-2515, 2019 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-31240959

RESUMEN

Aim: To evaluate the impact of socioeconomic factors (SEFs) on survival of renal cell carcinoma (RCC) patients. Materials & methods: RCC patients diagnosed between 2007 and 2015 were collected from the SEER database. The crude and multivariate Cox regression analysis was used to identify the independent prognostic factors and quantity the mortality risks for overall survival (OS). Results: Three SEFs including marital status, insurance status and median household income were identified as prognostic factors for OS. SEF-stage was built based on the three SEFs. Moreover, the SEF-stage 1 had superior OS than SEF-stage 2 within the respective American Joint Committee on Cancer stages. Conclusion: The SEF-stage was an independently prognostic factor for OS in RCC. Incorporation of SEF-stage into the American Joint Committee on Cancer staging system might be beneficial for better survival prediction and clinical management. However, further studies were needed to validate these findings in other populations.


Asunto(s)
Carcinoma de Células Renales/mortalidad , Neoplasias Renales/mortalidad , Adolescente , Adulto , Carcinoma de Células Renales/diagnóstico , Femenino , Humanos , Estimación de Kaplan-Meier , Neoplasias Renales/diagnóstico , Masculino , Persona de Mediana Edad , Clasificación del Tumor , Estadificación de Neoplasias , Pronóstico , Vigilancia en Salud Pública , Programa de VERF , Factores Socioeconómicos , Carga Tumoral , Adulto Joven
13.
Acta Pharmacol Sin ; 40(2): 231-242, 2019 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-29921883

RESUMEN

Annonaceous acetogenins are a well-established family of natural products with significant bioactivities, especially high cytotoxic and antitumor activities. AA005 is an annonaceous acetogenin mimic that has shown significant cytotoxicity against a variety of cancer cell lines, but its in vivo antitumor effects have not been demonstrated so far, and its anticancer mechanisms remain ambiguous. In this study, we investigated the effects of AA005 on human colon cancer cell lines in vivo. Human colon carcinoma cell line SW620 xenograft nude mice were treated with AA005 (5 mg/kg/day, i.p.) for 21 days. AA005 administration markedly inhibited the tumor growth via promoting nuclear translocation of apoptosis-inducing factor (AIF) and inducing AIF-dependent cell death. Subsequent studies in human colon carcinoma cell lines SW620 and RKO in vitro revealed that after the colon cancer cells exposed to AA005, downregulation of a B-cell lymphoma 2 family protein, myeloid cell leukemia-1 (Mcl-1), was an early event due to the inhibition of Mcl-1 mRNA level and protein synthesis in a time-dependent manner. Intriguingly, knockdown of Mcl-1 using small interfering RNA markedly accelerated the nuclear translocation of AIF and upregulation of receptor interacting protein-1, and enhanced AA005-mediated lethality, whereas ectopic expression of Mcl-1 substantially attenuated AA005-mediated lethality in the colon cancer cells. Finally, silencing Mcl-1 expression markedly enhanced AA005-induced lethality in SW620 xenograft nude mice, demonstrating a pivotal role of Mcl-1 downregulation in mediating the in vivo antitumor effects of AA005. Taken together, this study demonstrates for the first time the anticancer effects of AA005 against human colon cancer cell lines in vivo, which is mediated through the downregulation of Mcl-1.


Asunto(s)
Acetogeninas/química , Antineoplásicos/uso terapéutico , Neoplasias del Colon/tratamiento farmacológico , Alcoholes Grasos/uso terapéutico , Lactonas/uso terapéutico , Proteína 1 de la Secuencia de Leucemia de Células Mieloides/genética , Animales , Antineoplásicos/química , Muerte Celular/efectos de los fármacos , Línea Celular Tumoral , Regulación hacia Abajo , Alcoholes Grasos/química , Humanos , Lactonas/química , Ratones Desnudos , Ensayos Antitumor por Modelo de Xenoinjerto
14.
Ann Hepatol ; 18(6): 913-917, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31147179

RESUMEN

BACKGROUND AND AIMS: Hepatitis virus and alcohol are the main factors leading to liver damage. Synergy between hepatitis B virus (HBV) and alcohol in promoting liver cell damage and disease progression has been reported. However, the interaction of HBV and ethanol in hepatic steatosis development has not been fully elucidated. METHODS: Eight-week-old male C57BL/6 mice were treated with or without HBV, ethanol, or the combination of HBV and ethanol (HBV+EtOH), followed by a three-week high-fat diet (HFD) regimen. Liver histology, serum biomarkers, and liver triglyceride levels were analysed. Furthermore, a meta-analysis of the effects of alcohol and HBV on hepatic steatosis in populations was performed. RESULTS: Hepatic steatosis was significantly more severe in the HBV+EtOH group than in the other groups. The serum alanine aminotransferase, aspartate aminotransferase and liver triglyceride levels in the HBV+EtOH group were also significantly higher than those in the other groups. The HBeAg and HBsAg levels in the HBV+EtOH group were significantly higher than those in the pair-fed HBV-infected mice. In addition, the meta-analysis showed that alcohol consumption increased the risk of hepatic steatosis by 43% in HBV-infected patients (pooled risk ratio (RR)=1.43, P<0.01). CONCLUSIONS: Alcohol and HBV synergistically promote high-fat diet-induced hepatic steatosis in mice. In addition, alcohol consumption increases the risk of hepatic steatosis in HBV-infected patients.


Asunto(s)
Depresores del Sistema Nervioso Central/farmacología , Dieta Alta en Grasa , Etanol/farmacología , Hígado Graso/patología , Hepatitis B Crónica/patología , Hígado/efectos de los fármacos , Consumo de Bebidas Alcohólicas/epidemiología , Animales , Modelos Animales de Enfermedad , Hígado Graso/epidemiología , Hígado Graso/virología , Hepatitis B Crónica/epidemiología , Humanos , Hígado/patología , Hígado/virología , Ratones
15.
Clin Exp Hypertens ; 40(7): 695-701, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-29400588

RESUMEN

Essential hypertension is a leading global public health issue, billions of people suffered from it every year. Recently, multiple evidence suggests that DNA methylation play an important role in regulating blood pressure. Here, we tested the risk for essential hypertension conferred by single nucleotide polymorphisms (SNPs) within DNA methyltransferase 1 (DNMT1). Three loci (rs2228611, rs2228612, and rs16999593) were selected to be analyzed in 3410 cases and 1307 normal controls in southern Chinese aged 60 or above. No significant association with essential hypertension was observed for rs2228612 and rs16999593. A higher risk of essential hypertension was found in the minor A allele of rs2228611 in the codominant and recessive model (P < 0.05). After stratified by sex, this association was found in male but not female. Furthermore, this difference was abolished after BMI adjustment in the whole population and reduced in male. In addition, the mutation rate of rs2228611 was higher in the obesity group compared with the normal weight group of male. Intriguingly, rs2228611 was also a risk factor of essential hypertension in normal weight male. These findings indicated that rs2228611 might contribute to male hypertension via BMI-dependent mechanisms in obesity male and BMI-independent mechanisms in normal weight male.


Asunto(s)
ADN (Citosina-5-)-Metiltransferasa 1/genética , Hipertensión Esencial/genética , Predisposición Genética a la Enfermedad/genética , Anciano , Alelos , Pueblo Asiatico/genética , Presión Sanguínea , Índice de Masa Corporal , Estudios de Casos y Controles , Femenino , Humanos , Masculino , Persona de Mediana Edad , Obesidad/genética , Polimorfismo de Nucleótido Simple , Factores de Riesgo , Factores Sexuales
16.
Clin Exp Hypertens ; 39(8): 691-695, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28613083

RESUMEN

Essential hypertension (EH) is a worldwide problem. Acetaldehyde dehydrogenase 2 (ALDH2) gene has been suggested to be correlated with EH. However, the results are inconsistent. This study aimed to investigate the associations of ALDH2 rs671 polymorphism with EH in a Chinese Han population in Shanghai. Genotype of ALDH2 rs671 was analyzed in 1923 EH patients and 1115 control subjects. We found no association between ALDH2 rs671 and EH risk or EH-related quantitative blood chemistry values. Furthermore, a meta-analysis was performed and the summary results from 11220 patients and 8339 control subjects were consistent with our findings. These results indicated that rs671 of ALDH2 may not associate with the risk of EH.


Asunto(s)
Aldehído Deshidrogenasa Mitocondrial/genética , Hipertensión Esencial/genética , Predisposición Genética a la Enfermedad , Anciano , Pueblo Asiatico/genética , China , Hipertensión Esencial/sangre , Femenino , Genotipo , Humanos , Masculino , Persona de Mediana Edad , Polimorfismo de Nucleótido Simple , Factores de Riesgo
17.
Anal Bioanal Chem ; 407(10): 2711-26, 2015 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-25694149

RESUMEN

Carcinogen contaminations in the food chain, for example heavy metal ions, pesticides, acrylamide, and mycotoxins, have caused serious health problems. A major objective of food-safety research is the identification and prevention of exposure to these carcinogens, because of their impossible-to-reverse tumorigenic effects. However, carcinogen detection is difficult because of their trace-level presence in food. Thus, reliable and accurate separation and determination methods are essential to protect food safety and human health. This paper summarizes the state of the art in separation and determination methods for analyzing carcinogen contamination, especially the advances in biosensing methods. Furthermore, the application of promising technology including nanomaterials, imprinted polymers, and microdevices is detailed. Challenges and perspectives are also discussed.


Asunto(s)
Técnicas Biosensibles/métodos , Carcinógenos/análisis , Análisis de los Alimentos/métodos , Contaminación de Alimentos/análisis , Técnicas Biosensibles/instrumentación , Electroforesis Capilar , Inmunoensayo/métodos , Dispositivos Laboratorio en un Chip , Técnicas Analíticas Microfluídicas/instrumentación , Impresión Molecular/métodos , Micotoxinas/análisis , Nanoestructuras/química , Plaguicidas/análisis , Extracción en Fase Sólida/métodos
18.
Sensors (Basel) ; 15(8): 19212-24, 2015 Aug 05.
Artículo en Inglés | MEDLINE | ID: mdl-26251911

RESUMEN

Escherichia coli O157:H7 is a predominant foodborne pathogen with severe pathogenicity, leading to increasing attention given to rapid and sensitive detection. Herein, we propose an impedance biosensor using new kinds of screen-printed interdigitated microelectrodes (SPIMs) and wheat germ agglutinin (WGA) for signal amplification to detect E. coli O157:H7 with high sensitivity and time-efficiency. The SPIMs integrate the high sensitivity and short response time of the interdigitated electrodes and the low cost of the screen-printed electrodes. Self-assembling of bi-functional 3-dithiobis-(sulfosuccinimidyl-propionate) (DTSP) on the SPIMs was investigated and was proved to be able to improve adsorption quantity and stability of biomaterials. WGA was further adopted to enhance the signal taking advantage of the abundant lectin-binding sites on the bacteria surface. The immunosensor exhibited a detection limit of 102 cfu·mL(-1), with a linear detection range from 10(2) to 10(7) cfu·mL(-1) (r2 = 0.98). The total detection time was less than 1 h, showing its comparable sensitivity and rapid response. Furthermore, the low cost of one SPIM significantly reduced the detection cost of the biosensor. The biosensor may have great promise in food safety analysis and lead to a portable biosensing system for routine monitoring of foodborne pathogens.


Asunto(s)
Técnicas Biosensibles/instrumentación , Técnicas Electroquímicas/instrumentación , Escherichia coli O157/inmunología , Escherichia coli O157/aislamiento & purificación , Procesamiento de Señales Asistido por Computador , Aglutininas del Germen de Trigo/química , Materiales Biocompatibles/química , Simulación por Computador , Impedancia Eléctrica , Microelectrodos , Succinimidas/química
19.
Food Chem ; 438: 137931, 2024 Apr 16.
Artículo en Inglés | MEDLINE | ID: mdl-37989021

RESUMEN

Ginger powder is an important spice that is susceptible to improper sales such as adulteration or geographical fraud. In this study, a portable near infrared spectroscopy was used to quantitatively predict the 6-gingerol content, an important quality index of ginger, as well as to identify the gingers from three origins in China. Specifically, the optimal preprocessing method was first investigated by comparing the predictions of models. Then three feature variable selection methods including PCA, CARS, and RFrog, on the quantitative analysis of 6-gingerol were also compared, respectively. After comparison, the PLS model established on the S-G combined with SNV preprocessing outperformed the others. The PLS regression of 6-gingerol with variables selected by RFrog possessed the Rc2 of 0.9463, Rp2 of 0.9497, and the RPD of 4.2257, respectively. Moreover, the results further verified that the LDA model by SPA variables extraction successfully identify gingers from different origins with 100 % accuracy.


Asunto(s)
Zingiber officinale , Quimiometría , Polvos , Espectroscopía Infrarroja Corta/métodos , Análisis de los Mínimos Cuadrados
20.
Poult Sci ; 103(8): 103966, 2024 Jun 10.
Artículo en Inglés | MEDLINE | ID: mdl-38959642

RESUMEN

Leg disorders have become increasingly common in broilers, leading to lower meat quality and major economic losses. This study evaluated the effects of dietary supplementation with Clostridium butyricum (C. butyricum) and 25-hydroxyvitamin D3 (25-OH-D3) on bone development by comparing growth performance, tibial parameters, Ca and P contents of tibial ash, bone development-related indicators' level, and cecal short-chain fatty acids in Cobb broilers. All birds were divided into four treatment groups, which birds fed either a basal diet (Con), basal diet + 75 mg chlortetracycline/kg (Anti), basal diet + C. butyricum at 109 CFU/kg (Cb), basal diet + C. butyricum at 109 CFU/kg and 25-OH-D3 at 25 µg/kg (CbD), or basal diet + 25-OH-D3 at 25 µg/kg (CD). Our results suggest that the dietary supplementation in Cb, CbD, and CD significantly increased the body weight (BW) and average daily gain (ADG), and reduced the feed-to-weight ratio (F/G) at different stages of growth (P < 0.05). Dietary supplementation in Cb, CbD, and CD prolonged (P < 0.05) the behavioral responses latency-to-lie (LTL) time, reduced (P < 0.05) the levels of osteocalcin (BGP) and peptide tyrosine (PYY), and increased (P < 0.05) serotonin (5-HT) and dopamine (DA). Treatment with Cb increased (P < 0.05) the levels of acetic acid, isobutyric acid, butyric acid, and isovaleric acid compared with those in Con group. The cecal metagenome showed that Alistipes spp. were significantly more abundant in Cb, CbD, and CD groups (P < 0.05). A total of 12 metabolic pathways were significantly affected by supplementation, including the signaling pathways of glucagon, insulin, and PI3K-AKT; primary and secondary bile acid biosynthesis; and P-type Ca 2+ transporters (P < 0.05). Hence, the CbD supplementation modulates bone metabolism by regulating the mediators of gut-brain axis, which may inform strategies to prevent leg diseases and improve meat quality in broilers.

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