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1.
Food Chem ; 337: 127755, 2021 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-32777567

RESUMO

Since the beginning of the widespread use of pesticides, their removal from food has become a serious concern. In this study, the removal of residual pesticides (malathion and carbosulfan) from pak choi via treatment with ozonated water was investigated. Under the optimal treatment conditions, i.e., 2.0 mg/L ozonated water and a treatment duration of 15 min, malathion and carbosulfan were degraded by 53.0 and 33.0%, respectively, without any significant changes in color. Even though there was a slight decrease in vitamin C content (~7.9 mg/100 g) following the treatments, a significant decrease in the microbial colonies on the vegetables was observed. Additionally, the pesticide degradation mechanism showed good fitting with a "first + first"-order kinetic model (R2 > 0.9), and the slope (k) indicated that ozone had a more prominent degradation effect on malathion than on carbosulfan. Therefore, this study provides a theoretical basis for controlling agricultural pesticide residues in household applications.

2.
Clin Cardiol ; 2020 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-33002216

RESUMO

BACKGROUND: Although successful ablation of the accessory pathway (AP) eliminates atrial fibrillation (AF) in some of patients with Wolff-Parkinson-White (WPW) syndrome and paroxysmal AF, in other patients it can recur. HYPOTHESIS: Whether adding pulmonary vein isolation (PVI) after successful AP ablation effectively prevents AF recurrence in patients with WPW syndrome is unknown. METHODS: We retrospectively studied 160 patients (102 men, 58 women; mean age, 46 ± 14 years) with WPW syndrome and paroxysmal AF who underwent AP ablation, namely 103 (64.4%) undergoing only AP ablation (AP group) and 57 (35.6%) undergoing AP ablation plus PVI (AP + PVI group). Advanced interatrial block (IAB) was defined as a P-wave duration of >120 ms and biphasic (±) morphology in the inferior leads, using 12-lead electrocardiography (ECG). RESULTS: During the mean follow-up period of 30.9 ± 9.2 months (range, 3-36 months), 22 patients (13.8%) developed AF recurrence. The recurrence rate did not differ in patients in the AP + PVI group and AP group (15.5% vs 10.5%, respectively; P = .373). Univariable and multivariable Cox regression analyses showed that PVI was not associated with the risk of AF recurrence (hazard ratio, 0.66; 95% confidence interval, 0.26-1.68; P = .380). In WPW patients with advanced IAB, the recurrence rate was lower in patients in the AP + PVI group vs the AP group (90% vs 33.3%, respectively; P = .032). CONCLUSIONS: PVI after successful AP ablation significantly reduced the AF recurrence rate in WPW patients with advanced IAB. Screening of a resting 12-lead ECG immediately after AP ablation helps identify patients in whom PVI is beneficial.

4.
Sci Rep ; 10(1): 16712, 2020 Oct 02.
Artigo em Inglês | MEDLINE | ID: mdl-33009495

RESUMO

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

5.
Int J Biol Macromol ; 2020 Oct 07.
Artigo em Inglês | MEDLINE | ID: mdl-33038395

RESUMO

We report herein new nanofibers prepared from fish scale gelatine (FSG), modified polylactide (MPLA), and a natural antibacterial agent of freshwater clam (Corbicula fluminea Estefanía) shell powder (FCSP). A preparation of FSG from Mullet scales is also described. To improve the biocompatibility and antibacterial activity of the non-woven nanofibers, MPLA/FCSP was added to enhance their antibacterial properties. FSG was then combined with MPLA/FCSP using an electrospinning technique to improve the biocompatibility of the as-fabricated 100-500-nm-diameter non-woven MPLA/FCSP/FSG nanofibers. The resulting tensile properties and morphological characteristics indicated enhanced adhesion among FSG, FCSP, and MPLA in the MPLA/FCSP/FSG nanofibers, as well as improved water resistance and tensile strength, compared with the PLA/FSG nanofibers. MTT assay, cell-cycle, and apoptosis analyses showed that both PLA/FSG and MPLA/FCSP/FSG nanofibers had good biocompatibility. Increasing the FSG content in PLA/FSG and MPLA/FCSP/FSG nanofibers enhanced cell proliferation and free-radical scavenging ability, but did not affect cell viability. Quantitative analysis of bacteria inhibition revealed that FCSP imparts antibacterial activity.

6.
Pancreas ; 49(9): 1232-1239, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-33003086

RESUMO

OBJECTIVES: Type 2 diabetes (T2D) is histopathologically characterized by islet amyloid and is closely connected with vascular complications. Here, we explore the presence of pancreatic angiopathy (PA) associated with islet amyloid and T2D. METHODS: From a total of 172 autopsy cases who had a history of T2D diagnosis, we randomly selected 30 T2D autopsy cases with islet amyloid (DA+) in comparison with islet amyloid-free (DA-) 30 T2D cases and 60 nondiabetic (ND) controls. Amyloid deposits and PA including atherosclerosis of pancreatic interlobar arteries, arterial calcification, atheroembolism, hyaline arteriosclerosis of small arterioles, and islet capillary density were detected in all groups. RESULTS: Pancreatic angiopathy was found in 91.7% of patients with T2D and in 68.3% of ND controls (P < 0.01). Furthermore, 100% of DA+ patients and 83.3% of DA- subjects showed PA. The intraislet capillary density was significantly lower in DA+ subjects than DA- subjects (mean [standard deviation], DA+: 205 [82] count/mm; DA-: 344 [76] count/mm; ND: 291 [94] count/mm; P < 0.01). Finally, interlobar arteriosclerosis (R = 0.603, P < 0.01) was linearly correlated with the severity of islet amyloid deposits. CONCLUSIONS: Pancreatic angiopathy might be both a cause and a consequence of islet amyloid and T2D.

7.
J Int Med Res ; 48(10): 300060520961279, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-33044871

RESUMO

Black hairy tongue (BHT) is characterized by a discolored, hairy tongue. We herein report two cases of BHT associated with antibacterial agents and review previous cases. In Case 1, a 17-year-old girl with a central neurocytoma was administered intravenous piperacillin-tazobactam for postoperative infection, and BHT developed 12 days later. Her symptoms resolved 8 days after she discontinued the piperacillin-tazobactam and brushed her tongue three times daily. In Case 2, a 65-year-old man was administered intravenous piperacillin-tazobactam and levofloxacin to treat multidrug-resistant Pseudomonas aeruginosa, and BHT developed 15 days later. The piperacillin-tazobactam was discontinued and the patient brushed his tongue, and the discoloration gradually subsided thereafter. However, the BHT reappeared after linezolid treatment. The patient had adverse drug reactions to both the piperacillin-tazobactam and linezolid treatments. The BHT might have been related to antibiotic use in both cases. We identified 19 cases of antibiotic-related BHT in a literature search, but none were related to piperacillin-tazobactam use. In all cases, symptoms resolved after discontinuation of the drug and brushing of the tongue. BHT may be a rare adverse effect of antibiotics. Treatment strategies include removal of the causative agents, mechanical debridement, and good oral hygiene.

8.
BMJ Open ; 10(10): e038344, 2020 Oct 19.
Artigo em Inglês | MEDLINE | ID: mdl-33077565

RESUMO

OBJECTIVES: The caregiving experience includes both caregiver burdens and benefits finding. However, the benefits obtained by family caregivers of stroke survivors in Chinese community dwellings are unknown. The objective of this study was to explore the benefits experienced by family caregivers of stroke survivors in Chinese community dwellings. DESIGN: A qualitative descriptive design was used, fulfilling the consolidated criteria for the Standards for Reporting Qualitative Research reporting guidelines. Semi-structured interviews were conducted with 20 family caregivers of stroke survivors. The interviews were audiotaped, transcribed and analysed. Thematic analysis was performed to analyse the interview transcripts. SETTING AND PARTICIPANTS: Home interviews were conducted with family caregivers of stroke survivors in two communities in Zhengzhou, China. RESULTS: The family caregivers of stroke survivors experienced various benefits from caregiving. There were both internal benefits (increases in knowledge and skills, the development of positive attitudes, and the development of a sense of worthiness and achievement) and external benefits (family growth and gains in social support), which interact to create a healthy lifestyle. CONCLUSION: Our findings provide a comprehensive perspective in understanding the benefits perceived by family caregivers of stroke survivors. This study provides insights into interventions focused on identifying benefits finding in six domains that may help reduce negative emotions and promote the mental health of caregivers.

9.
Zhongguo Zhong Yao Za Zhi ; 45(15): 3689-3693, 2020 Aug.
Artigo em Chinês | MEDLINE | ID: mdl-32893559

RESUMO

Eleven compounds were isolated and purified from Sorghum vulgare root extract, through column chromatography over silica gel, MCI gel, and preparative HPLC. Their structures were established by MS, 1 D NMR and 2 D NMR data as sorgholide A(1), ß-sitosterol(2), stigmastero(3), daucosterol(4), 4-methoxycinnamic acid(5), taxiphyllin(6), chlorogenic acid(7), p-hydroxybenzaldehyde(8), succini acid(9), trans-p-hydroxycinnamic acid(10), obtusalin(11). Compounds 4,5 and 9-11 were reported from this species for the first time, and compound 1 is the first 24 ring dimeric double lactonol glycoside formed by reverse polymerization of p-hydroxyphenylacetate glucoside, named sorgholide A.


Assuntos
Glicosídeos Cardíacos , Sorghum , Glucosídeos , Glicosídeos , Fenóis
10.
Immunol Cell Biol ; 2020 Sep 04.
Artigo em Inglês | MEDLINE | ID: mdl-32888232

RESUMO

Marginal zone (MZ) B cells are innate-like B cells that produce polyreactive antibodies with an affinity for microbial molecular patterns and carbohydrate ligands. MZ B cells have been shown to be important in mediating immunity to various bacteria including Streptococcus pneumoniae and are also implicated in inflammatory syndromes including lupus erythematosus. The intestinal microbiota is responsible for producing short-chain fatty acids, which can regulate immune cell function by several mechanisms including ligation of the G-protein-coupled receptor (GPR)43. Herein, we show that MZ B cells express Gpr43 messenger RNA and that the absence of this receptor impacts on MZ B-cell surface marker expression and antibody production. In T-cell-independent responses to the hapten 4-hydroxy-3-nitrophenylacetic acid (NP), mice deficient in GPR43 displayed higher serum titers of NP-specific antibodies. Moreover, in response to a pneumococcal polysaccharide vaccine, GPR43-deficient mice developed robust serum antibody responses and had markedly increased numbers of splenic antibody-secreting cells, compared with control mice. Finally, serum immunoglobulin M autoantibodies to double-stranded DNA and phosphatidylcholine were increased in resting 10-15-week-old mice lacking GPR43. Taken together, mice lacking GPR43 have heightened antibody responses to T-cell-independent antigens, which may be a result of impaired regulation of MZ B cells.

11.
Inorg Chem ; 2020 Sep 03.
Artigo em Inglês | MEDLINE | ID: mdl-32881487

RESUMO

Single-layered, double-layered, and triple-layered Pt nanoparticles with a well-defined arrangement were encapsulated inside metal-organic frameworks (MOFs) to investigate the catalytic performance influenced by the progressive increasing of Pt nanoparticles inside MOFs; the results show that the catalytic activity of the Pt-MOF hybrid catalysts increases progressively with the progressive increasing of the Pt nanoparticles inside MOFs. Progressive increasing of Pt nanoparticles with a multiple-layered manner inside MOFs provides a new route for designing well-organized hybrid catalysts of noble metal nanoparticles and MOFs with enhanced catalytic activity.

12.
Adv Healthc Mater ; : e1901634, 2020 Sep 21.
Artigo em Inglês | MEDLINE | ID: mdl-32959536

RESUMO

Multimodal imaging-guided synergistic anticancer strategies have attracted increasing attention for efficient diagnosis and therapy of cancer. Herein, a multifunctional nanotheranostic agent FePtMn-Ce6/FA (FPMCF NPs) is constructed by covalently anchoring photosensitizer chlorin e6 (Ce6) and targeting molecule folic acid (FA) on ultrasmall homogeneous ternary FePtMn nanocrystals. Response to tumor microenvironment (TME), FPMCF NPs can release Fe2+ to catalyze H2 O2 into •OH by Fenton reaction and simultaneously catalyze hydrogen peroxide (H2 O2 ) into O2 to overcome the tumor hypoxia barrier. Released O2 is further catalyzed into 1 O2 under 660 nm laser irradiation with Ce6. Thus, the FPMCF NPs exhibit superior dual-ROS oxidization capability including ferroptosis chemodynamic oxidization and 1 O2 -based photodynamic oxidization. Interestingly, FPMCF NPs reveal strong photothermal conversion efficiency exposed to an 808 nm laser, which can assist dual-ROS oxidization to suppress solid tumor remarkably. Additionally, Mn2+ can be released from FPMCF NPs to enhance longitudinal relaxivity (T1 -weighted magnetic resonance (MR) imaging) and Fe-synergistic transverse relaxivity (T2 -weighted MR imaging), which is convenient for diagnosis of solid tumors. Meanwhile, the fluorescent/photothermal (FL/PT) imaging function of FPMCF NPs can also accurately monitor tumor location. Therefore, FPMCF NPs with multimodal MR/FL/PT imaging-guided synergistic chemodynamic/photodynamic/photothermal cancer therapy capability have potential bioapplication in bionanomedicine field.

13.
Cell Death Dis ; 11(9): 775, 2020 Sep 17.
Artigo em Inglês | MEDLINE | ID: mdl-32943613

RESUMO

Ankylosing spondylitis (AS) is a chronic inflammatory disease possessing a morbid serum microenvironment with enhanced oxidative stress. Long-term exposure to an oxidative environment usually results in cellular senescence alone with cellular dysfunction. Mesenchymal stem cells (MSCs) are a kind of stem cell possessing strong capabilities for immunoregulation, and senescent MSCs may increase inflammation and participate in AS pathogenesis. The objective of this study was to explore whether and how the oxidative serum environment of AS induces MSC senescence. Here, we found that AS serum facilitated senescence of MSCs in vitro, and articular tissues from AS patients exhibited higher expression levels of the cell cycle arrest-related proteins p53, p21 and p16. Importantly, the levels of advanced oxidative protein products (AOPPs), markers of oxidative stress, were increased in AS serum and positively correlated with the extent of MSC senescence induced by AS serum. Furthermore, MSCs cultured with AS serum showed decreased mitochondrial membrane potential and ATP production together with a reduced oxygen consumption rate. Finally, we discovered that AS serum-induced mitochondrial dysfunction resulted in elevated reactive oxygen species (ROS) in MSCs, and ROS inhibition successfully rescued MSCs from senescence. In conclusion, our data demonstrated that the oxidative serum environment of AS facilitated MSC senescence through inducing mitochondrial dysfunction and excessive ROS production. These results may help elucidate the pathogenesis of AS and provide potential targets for AS treatment.

14.
Liver Transpl ; 2020 Sep 13.
Artigo em Inglês | MEDLINE | ID: mdl-32924260

RESUMO

BACKGROUND: Minimizing the anhepatic period is critical to reduce allograft dysfunction, intestinal bacterial translocation, and acute liver failure among liver transplant (LT) recipients. The current study introduced a new surgical technique for fast major vascular reconstruction by utilization of magnetic devices in recipients. METHODS: A prospective study was conducted among patients who underwent orthotopic LT using Donation after Cardiac Death (DCD) between November 2018 and December 2019. The procedures of magnetic-assisted LT was clinically performed and introduced. In brief, three pairs of C-shaped magnetic rings and matched base members were placed and fixed in the stump of supra- and infra-hepatic inferior vena cava, as well as portal vein of the donors and recipients. The donor liver was implanted, and the magnet rings at the donor and recipient vessels attached immediately for a rapid reconstruction. Final continuous suture of the vessels was then performed under restoration of the blood flow. RESULTS: A total of six patients were finally enrolled in magnetic-assisted LT. The median age of the recipients was 40.0 (IQR 37.0-49.3) years, and all were male patients as well. The median anhepatic time of patients undergoing magnetic-assisted LT was 10.3 min (IQR 9.5-13.2 min). With a median follow-up of 10.5 (range 7.2-19.8) months, all patients recovered well with normal liver function. Two patients had experienced partial portal vein thrombosis or acute rejection, respectively, which were unrelated to the surgical techniques, and treated successfully. CONCLUSION: The magnetic-assisted vascular anastomosis shortened the anhepatic phase to only about 10 min during LT. Fast revascularization of the donor liver by using the novel magnetic technique is safe and feasible in LT.

16.
Pediatrics ; 146(4)2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32900877

RESUMO

BACKGROUND: Children born preterm are at high risk for autism spectrum disorder (ASD). However, there is still a lack of appropriate developmental markers. In this study, we aim to examine whether early mental performance trajectory is related to ASD outcome in the preterm population. METHODS: The population-based cohort included 414 very preterm survivors born between 2008 and 2014. After excluding children with severe neurosensory impairment, 319 children with available records of developmental quotients before age 2 years were enrolled. The trajectory of mental performance evaluated by using the Bayley Scales of Infant Development across 6, 12, and 24 months of age was analyzed with group-based trajectory modeling. At 5 years of age, the ASD diagnosis was established by using the Autism Diagnostic Observation Schedule and the Autism Diagnostic Interview-Revised. RESULTS: There were 29 children with ASD and 290 children without ASD. The mental performances from age 6 to 24 months could be classified into 3 trajectory patterns: low declining, high declining, and high stable, which corresponded to ASD prevalence at age 5 years of 35%, 9%, and 3%, respectively. ASD odds was 15 times higher in the low-declining group than in the high-stable group (odds ratio 15; 95% confidence interval 3.8-59; P < .001). Through the analysis of multinomial logistic regression, we found that male infants with longer exposure to oxygen therapy whose mothers had lower maternal education levels tended to follow the low-declining trajectory. CONCLUSIONS: The early-life mental trajectory patterns, by using the Bayley Scales of Infant Development, may lead to identification of vulnerable children born preterm for early ASD diagnosis and targeted intervention.


Assuntos
Transtorno do Espectro Autista , Desenvolvimento Infantil , Lactente Extremamente Prematuro , Fatores Etários , Transtorno do Espectro Autista/classificação , Transtorno do Espectro Autista/diagnóstico , Transtorno do Espectro Autista/epidemiologia , Transtorno do Espectro Autista/fisiopatologia , Pré-Escolar , Intervalos de Confiança , Diagnóstico Precoce , Escolaridade , Feminino , Seguimentos , Humanos , Lactente , Recém-Nascido , Modelos Logísticos , Masculino , Razão de Chances , Oxigênio/uso terapêutico , Prevalência , Fatores Sexuais
17.
J Am Chem Soc ; 142(41): 17480-17488, 2020 Oct 14.
Artigo em Inglês | MEDLINE | ID: mdl-32955872

RESUMO

Following the significance of dissipative, out-of-equilibrium biological processes controlling living systems, we introduce nucleic acid-based dissipative constitutional dynamic networks (CDNs) that exhibit tunable transient composition changes of the networks dictated by auxiliary fuel strands. CDN "X" composed of four equilibrated nucleic acid constituents, AA', AB', BA', and BB', and the accompanying "dormant" structures T1L1 and T2L2 and nicking enzyme Nt.BbvCI, undergoes dissipative orthogonal transitions to CDN "Y" and back or to CDN "Z" and back. In the presence of the fuel strand L1' or L2', the displacement of the respective "dormant" structure releases the trigger T1 or T2 that activates the reconfiguration of CDN "X" to CDN "Y" or CDN "X" to CDN "Z". The generated duplex L1L1' or L2L2' is designed to be nicked by Nt.BbvCI, leading to the regeneration of L1 or L2 that rebinds to T1 or T2, resulting in the dissipative cyclic recovery of CDN "X". Kinetic simulations of the dissipative processes allow us to predict the dissipative behavior of the systems under different auxiliary conditions. Subjecting CDN "X" to altering sets of the fuel strands L1' and L2' yields programmed reconfiguration patterns of dissipative reaction cycles. By engineering functional nucleic acid tethers on the constituents and the triggering strands, orthogonal dissipative emerging catalytic transformations dictated by the dissipative CDNs are demonstrated.

18.
J Cancer Res Ther ; 16(4): 867-873, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32930132

RESUMO

Objective: The objective of this paper was to investigate hub genes of postmenopausal osteoporosis (PO) utilizing benchmarked dataset and gene regulatory network (GRN). Materials and Methods: To achieve this goal, the first step was to benchmark the dataset downloaded from the ArrayExpress database by adding local noise and global noise. Second, differentially expressed genes (DEGs) between PO and normal controls were identified using the Linear Models for Microarray Data package based on benchmarked dataset. Third, five kinds of GRN inference methods, which comprised Zscore, GeneNet, context likelihood of relatedness (CLR) algorithm, Partial Correlation coefficient with Information Theory (PCIT), and GEne Network Inference with Ensemble of trees (Genie3), were described and evaluated by receiver operating characteristic (ROC) and precision and recall (PR) curves. Finally, GRN constructed according to the method with best performance was implemented to conduct topological centrality (closeness) for the purpose of investigate hub genes of PO. Results: A total of 236 DEGs were obtained based on benchmarked dataset of 20,554 genes. By assessing Zscore, GeneNet, CLR, PCIT, and Genie3 on the basis of ROC and PR curves, Genie3 had a clear advantage than others and was applied to construct the GRN which was composed of 236 nodes and 27,730 edges. Closeness centrality analysis of GRN was carried out, and we identified 14 hub genes (such as TTN, ACTA1, and MYBPC1) for PO. Conclusion: In conclusion, we have identified 14 hub genes (such as TN, ACTA1, and MYBPC1) based on benchmarked dataset and GRN. These genes might be potential biomarkers and give insights for diagnose and treatment of PO.

20.
ACS Sens ; 2020 Sep 08.
Artigo em Inglês | MEDLINE | ID: mdl-32896123

RESUMO

Liver cirrhosis is one of the leading causes of death in adults worldwide. It is highly prevalent in developing countries and is growing in prevalence in developed countries mostly due to chronic liver diseases, such as chronic hepatitis B and C, and alcoholic and nonalcoholic fatty liver disease. However, the prevalence of cirrhosis may be highly underestimated because early stages are asymptomatic and current early detection methods are inadequate. Here, we evaluate the potential of a set of novel cirrhotic protein biomarkers, including soluble intercellular adhesion molecule-1 (sICAM-1) and mac-2 binding protein glycosylation isomer (M2BPGi), for early detection of cirrhosis in a multiplexed assay using our giant magnetoresistive (GMR) sensor arrays. We evaluated the diagnostic performance of the biomarkers, individually and in combination, using multivariate logistic regression and random forest in a blinded proof-of-concept retrospective case-controlled study. The biomarkers in combination exhibited high diagnostic performance in both logistic regression and random forest models, with area under the curve (AUC) of 0.98 (0.94 - 1.00). In addition, the combination of biomarkers resulted in high sensitivity of 0.97 (0.95 - 1.00) and high specificity of 1.00. We showed that the diagnostic performance of our novel set of cirrhotic protein biomarkers on our multiplexed GMR sensor arrays is higher than the performance of currently used clinical biomarkers and factors (i.e. age, sex, alanine aminotransferase (ALT), aspartate aminotransferase (AST), etc.). With this combination of novel biomarkers and the GMR technology, we could potentially boost the diagnostic power of early cirrhosis detection.

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