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1.
Anal Chem ; 96(33): 13504-13511, 2024 Aug 20.
Artigo em Inglês | MEDLINE | ID: mdl-39132753

RESUMO

The development of luminol-dissolved O2 (luminol-DO) electrochemiluminescence (ECL) systems is crucial for real-world applications. Despite its stability and low biotoxicity, luminol-DO ECL systems struggle with low ECL performance due to their low reactivity. Investigating new materials like coreactant accelerators increases reactive oxygen species (ROS) formation and enhances luminol-DO ECL intensity. Motivated by the ROS-mediated ECL process, for the first time, we designed oxygen vacancy (OV)-rich high-entropy oxides (HEO) with five metal components [(FeCoNiCuZn)O] derived from metal-organic frameworks (MOFs) as coreaction accelerators to establish efficient luminol-DO ECL systems. High entropy (HE) MOFs were annealed at four different temperatures (600, 700, 800, and 900 °C). Indeed, the HE MOFs annealed at 800 °C (HEO-800) showed a 120-fold stronger ECL intensity compared to the bare glassy carbon electrode in the luminol-DO ECL system. The enhanced ECL performance can be attributed to the porous structure, unique morphology, heterostructures, high-density active sites, rich OV, unsaturated metals, and synergistic impact, which act as catalysts to accelerate the conversion of DO to ROS. The developed HEO-800-based luminol-DO ECL system can be effectively used for the high-sensitivity detection of mercury ions (Hg2+). The system detected Hg2+ over a wide concentration range from 0.1 nM to 100 µM, with a detection limit of 0.02 nM. The sensing mechanism relied on high-affinity metallophilic Hg2+-HEO-800 interactions, effectively quenching the ECL intensity of the luminol-DO/HEO-800 ECL system. The ECL sensing platform, developed without H2O2, offers a novel method for detecting substances, demonstrating significant potential for clinical diagnosis and biomarker analysis.

2.
Anal Chem ; 96(37): 14741-14748, 2024 Sep 17.
Artigo em Inglês | MEDLINE | ID: mdl-39234648

RESUMO

Dopamine (DA) is a very imperative neurotransmitter in our body, since it contributes to several physiological processes in our body, for example, memory, feeling, cognition, cardiovascular diseases, and hormone secretion. Meanwhile, tyrosinase is a critical biomarker for several dangerous skin diseases, including vitiligo and melanoma cancer. Most of the reported chemiluminescent (CL) methods for monitoring DA and tyrosinase are signal-off biosensors. Herein, we introduce a new chemiluminescent "signal-on" system, lucigenin-tris(hydroxypropyl)phosphine (THPP), for the selective determination of DA and tyrosinase. THPP is well known as a versatile and highly water-soluble sulfhydryl-reducing compound that is more highly stable against air oxidation than common disulfide reductants. By employing THPP for the first time as an efficient lucigenin coreactant, the lucigenin-THPP system has shown a high CL response (approximately 16-fold) compared to the lucigenin-H2O2 classical CL system. Surprisingly, DA can remarkably boost the CL intensity of the lucigenin-THPP CL system. Additionally, tyrosinase can efficiently catalyze the conversion of tyramine to DA. Therefore, lucigenin-THPP was employed as an ultrasensitive and selective signal-on CL system for the quantification of DA, tyrosinase, and THPP. The linear ranges for the quantification of DA, tyrosinase, and THPP were 50-1000 nM, 0.2-50 µg/mL, and 0.1-800 µM, respectively. LODs for DA and tyrosinase were estimated to be 24 nM and 0.18 µg/mL, respectively. Additionally, the CL system has been successfully employed for the detection of tyrosinase in human serum samples and the assay of DA in human serum samples as well as in dopamine injection ampules with excellent obtained recoveries.


Assuntos
Acridinas , Dopamina , Medições Luminescentes , Monofenol Mono-Oxigenase , Fosfinas , Dopamina/análise , Dopamina/metabolismo , Monofenol Mono-Oxigenase/metabolismo , Monofenol Mono-Oxigenase/química , Fosfinas/química , Acridinas/química , Humanos , Técnicas Biossensoriais/métodos , Limite de Detecção
3.
Opt Express ; 32(2): 2124-2131, 2024 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-38297749

RESUMO

This paper provides a method to effectively suppress the severe ASE self-saturation when achieving high repetition frequency tunability with high output power and narrow pulse width in active Q-switched all-fiber lasers. By studying the regularity of the system's multi-stable state, we first ensured that the laser system operated in a steady state. Then output avoids uneven distribution of pulse energy or missing pulses due to period bifurcation state or chaos state. By adding multiple gain sub-rings within the cavity, the sub-ring structure itself indirectly mitigates the ASE self-saturation while smoothing the pulse. The method will avoid the severe power loss caused by traditional smoothing methods by adjusting the AOM rising edge time. It will also avoid lowering the ASE lasing threshold at high repetition frequency. Meanwhile, the intra-cavity backward ASE can be effectively absorbed by inserting the gain fiber in the sub-rings to directly mitigate the ASE self-saturation. The system's continuously adjustable repetition frequency can be as high as over 300 kHz. It ensures that output power above the watt level and a < 0.2 nm narrow bandwidth can be maintained while tuning the repetition frequency. The narrowest smoothing pulse width of 28 ns has been reached.

4.
Fish Shellfish Immunol ; 154: 109911, 2024 Sep 16.
Artigo em Inglês | MEDLINE | ID: mdl-39293705

RESUMO

Zinc is essential for normal growth and reproduction in all animals and plays a crucial role in many biological processes. The present study aimed to compare the intervention effects of zinc on intestinal health in a high lipid diet or high starch diet. Seven iso-nitrogenous (∼520 g kg-1) diets were formulated containing a positive control diet (115 g kg-1 lipid + 115 g kg-1 starch + 20 mg kg-1 Zn), three high starch diets (HS, 166 g kg-1 starch) and three high lipid diets (HL, 182 g kg-1 lipid), with 0 (HS-LZn, HL-LZn), 20 (HS-MZn, HL-MZn) and 150 (HS-HZn, HL-HZn) mg kg-1 Zn being supplemented. High starch diet and high lipid diet promoted feed efficiency, as evidenced by the lower feed conversion ratio. Three-way factorial ANOVA analysis showed high starch diet (166 g kg-1) significantly decreased final body weight and weight gain compared to the normal starch level (115 g kg-1). Diamine oxidase in serum significantly increased in diets HS-LZn and HL-LZn. In addition, distal intestinal mucosal fold damage and inflammatory infiltration were observed in the HS-LZn, HS-HZn, HL-LZn and HL-HZn groups. Fish fed HL diets (HL-LZn, HL-MZn, HL-HZn) showed lower expressions of claudin 5 and claudin 34, and higher IgD and IgM. Diets HL-LZn and HL-MZn significantly up-regulated C4 and C7. Proinflammatory cytokines including il8, il1ß and tnfα significantly up-regulated in diet HL-LZn, even higher than the HS-LZn. Intestinal microbial composition indicated the abundance of Cetobacterium in HL-LZn was significantly higher than the control and HL-MZn diets. Similarly, LEfSe showed that Cetobacterium (P = 0.039) significantly enriched in the HL-LZn group. This study clarified high energy diet induced intestinal damage, which can be alleviated by zinc.

5.
Cereb Cortex ; 33(15): 9409-9416, 2023 07 24.
Artigo em Inglês | MEDLINE | ID: mdl-37328935

RESUMO

Obesity may lead to cognitive impairment and psychiatric disorders, which are associated with alterations in the brain cortical structure. However, the exact causality remains inconclusive. We aimed to conduct two-sample Mendelian randomization (MR) analysis to identify the causal associations of obesity [body mass index (BMI), waist-hip ratio (WHR), and waist-hip ratio adjusted for BMI ((WHRadjBMI)) and brain cortical structure (cortical thickness and cortical surface area). Inverse-variance weighted (IVW) method was used as the main analysis, whereas a series of sensitivity analyses were employed to assess heterogeneity and pleiotropy. The main MR results showed that higher BMI significantly increased the cortical surface area of the transverse temporal (ß = 5.13 mm2, 95% confidence interval [CI]: 2.55-7.71, P = 9.9 × 10-5); higher WHR significantly decreased cortical surface area of the inferior temporal (ß = -38.60, 95% CI: -56.67- -20.54, P = 1.2 × 10-5), but significantly increased cortical surface area of the isthmus cingulate (ß = 14.25, 95% CI: 6.97-21.54, P = 1.2 × 10-4). No significant evidence of pleiotropy was found in the MR analyses. This study supports that obesity has a causal effect on the brain cortical structure. Further studies are warranted to understand the clinical outcomes caused by these effects.


Assuntos
Disfunção Cognitiva , Análise da Randomização Mendeliana , Humanos , Encéfalo , Obesidade/genética , Índice de Massa Corporal , Estudo de Associação Genômica Ampla , Polimorfismo de Nucleotídeo Único
6.
BMC Pediatr ; 24(1): 178, 2024 Mar 13.
Artigo em Inglês | MEDLINE | ID: mdl-38481189

RESUMO

BACKGROUND: Amniotic fluid contamination (AFC) is a risk factor for neonatal hypoxic ischemic encephalopathy (HIE); however, the correlation between AFC level and the incidence and clinical grading of HIE, in addition to relevant biomarkers of brain damage, have not been assessed. METHODS: This single-center observational study included 75 neonates with moderate-to-severe HIE. The neonates with HIE were divided into four subgroups according to the AFC level: normal amniotic fluid with HIE group (NAF-HIE), I°AFC with HIE group (I°AFC-HIE), II°AFC with HIE group (II°AFC-HIE), and III°AFC with HIE group (III°AFC-HIE). The control groups consisted of 35 healthy neonates. The clinical grading of neonatal HIE was performed according to the criteria of Sarnat and Sarnat. Serum tau protein and S100B were detected by enzyme-linked immunosorbent assay kits. Correlations of serum tau protein and S100B were evaluated using the Pearson correlation analysis. RESULTS: (1) The incidence of neonatal HIE in the NAF-HIE group was 20 cases (26. 7%), I°AFC-HIE was 13 cases (17.3%), II°AFC-HIE was 10 cases (13.3%), and III°AFC-HIE was 32 cases (42. 7%). The incidence of moderate-to-severe HIE in the I°-III°AFC-HIE groups was 73.3% (55/75). (2) In 44 cases with severe HIE, 26 cases (59.1%) occurred in the III°AFC-HIE group, which had a significantly higher incidence of severe HIE than moderate HIE (p < 0.05). In NAF-HIE and I°AFC-HIE groups, the incidence of moderate HIE was 45.2% and 29.0%, respectively, which was higher than that of severe HIE (X2 = 9.2425, p < 0.05; X2 = 5.0472, p < 0.05, respectively). (3) Serum tau protein and S100B levels in the HIE groups were significantly higher than in the control group (all p < 0.05), and were significantly higher in the III°AFC-HIE group than in the NAF-HIE and I°AFC-HIE groups (all p < 0.05). (4) Serum tau protein and S100B levels in the severe HIE group were significantly higher in the moderate HIE group (all p < 0.05). (5) Serum tau protein and S100B levels were significantly positively correlated (r = 0.7703, p < 0.0001). CONCLUSION: Among children with severe HIE, the incidence of III°AFC was higher, and the levels of serum tau protein and S100B were increased. AFC level might be associated with HIE grading.


Assuntos
Lesões Encefálicas , Hipóxia-Isquemia Encefálica , Recém-Nascido , Criança , Humanos , Hipóxia-Isquemia Encefálica/etiologia , Proteínas tau , Líquido Amniótico , Biomarcadores , Encéfalo
7.
Eat Weight Disord ; 29(1): 15, 2024 Feb 19.
Artigo em Inglês | MEDLINE | ID: mdl-38372804

RESUMO

BACKGROUND: Many studies have covered the prevalence of obesity in different populations. However, studies on the prevalence and predictors of obesity among medical staff are lacking. The aim of our study is to investigate the prevalence of obesity among medical staff and to identify the related predictors. METHODS: Using a snowballing recruitment strategy in the form of an electronic questionnaire, a cross-sectional survey was conducted among 1201 medical staff from cooperative hospitals between January and March 2022. We designed a questionnaire to investigate the participants' demographic, lifestyle, diet, physical activity, and work status. RESULTS: The overall prevalence of obesity was 8.5%, with males (13.7%) having a greater incidence than females (5.7%) (p < 0.001). Multiple logistic regression analyses showed that alcohol drinking (OR, 2.34; 95% CI 1.23-4.42, p = 0.01), sugar-sweetened beverages consumed > 3/week (OR, 2.50; 95% CI 1.02-6.15, p = 0.046), and working a night shift > 1/week (OR, 2.17; 95% CI 1.02-4.61, p = 0.043) were independent predictive factors for obesity in men. For women, having midnight snack having midnight snack (OR, 2.93;95% CI 1.24-6.96, p = 0.015), good sleep quality (OR, 4.47; 95% CI 1.10-21.70, p = 0.038), and working a night shift > 1/week (OR, 3.62; 95% CI 1.73-7.57, p = 0.001) were independently associated with obesity. CONCLUSIONS: Obesity presented a low prevalence among medical staff. Alcohol drinking, drinking sugar-sweetened beverages > 3/week, and night shift > 1/week predicted a higher risk of obesity in males. In females, having midnight snack, good sleep quality, and night shift > 1/week were independently associated with obesity. LEVEL OF EVIDENCE: V, descriptive study.


Assuntos
Corpo Clínico , Obesidade , Masculino , Humanos , Feminino , Estudos Transversais , Projetos Piloto , Obesidade/epidemiologia , China
8.
Anal Chem ; 95(24): 9380-9387, 2023 06 20.
Artigo em Inglês | MEDLINE | ID: mdl-37285116

RESUMO

Metal-organic gels (MOGs) are a category of metal-organic smart soft materials with large specific surface areas, loose porous structures, and open metal active sites. In this work, trimetallic Fe(III)Co(II)Ni(II)-based MOGs (FeCoNi-MOGs) were synthesized at room temperature via a simple and mild one-step procedure. Fe3+, Co2+, and Ni2+ were the three central metal ions in it, while 1,3,5-benzenetricarboxylic acid (H3BTC) served as the ligand. The solvent enclosed in it was then removed by freeze-drying to get the corresponding metal-organic xerogels (MOXs). The as-prepared FeCoNi-MOXs have excellent peroxidase-like activity and can significantly enhance luminol/H2O2 chemiluminescence (CL) by more than 3000 times, which is very effective compared with other reported MOXs. Based on the inhibitory effect of dopamine on the CL of the FeCoNi-MOXs/luminol/H2O2 system, a simple, rapid, sensitive, and selective CL method for dopamine detection was established with a linear range of 5-1000 nM and a limit of detection of 2.9 nM (LOD, S/N = 3). Furthermore, it has been effectively used for the quantitative measurement of dopamine in dopamine injections and human serum samples, with a recovery rate of 99.5-109.1%. This research brings up prospects for the application of MOXs with peroxidase-like activity in CL.


Assuntos
Dopamina , Luminol , Humanos , Luminol/química , Peróxido de Hidrogênio/química , Luminescência , Metais/química , Peroxidases , Medições Luminescentes/métodos , Limite de Detecção
9.
Fish Shellfish Immunol ; 134: 108604, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36758654

RESUMO

The aim of this experiment was to investigate whether dietary coenzyme Q10 could alleviate stress response of Micropterus salmoides caused by oxidized fish oil. Four isonitrogenous and isoenergetic diets were formulated to contain 100% fresh fish oil (FFO), 50% fresh fish oil + 50% oxidized fish oil (BFO), 100% oxidized fish oil (OFO) and 100% oxidized fish oil + 0.1% coenzyme Q10 (QFO) and were fed to Micropterus salmoides (95 ± 0.60 g) for 70 days. Higher weight gain rate was recorded in fish fed diet supplemented with coenzyme Q10 (CoQ10). FFO and BFO significantly increased contents of fat and energy in whole-body, while protein and energy retention significantly decreased in fish fed OFO. Apparent digestibility of energy and fat showed a significant decrease trend with increased the proportion of dietary oxidized fish oil. Fish fed OFO significantly increased activities of superoxide dismutase and catalase, while CoQ10 supplementation significantly reduced activities of alanine aminotransferase and aspartate aminotransferase in plasma. Contents of n-3 polyunsaturated fatty acids and highly unsaturated fatty acids, especially EPA and DHA in liver and muscle significantly decreased in fish fed OFO. Transcriptome analysis indicated that a total of 1238, 1189 and 1773 differentially expressed genes (DEGs, |log2(fold change) | >= 1 and q-value<=0.001) were found in the three comparison groups (FFO vs. OFO, FFO vs. QFO, OFO vs. QFO), respectively. After KEGG enrichment, the main changed pathways in the two comparison groups (FFO vs. OFO, OFO vs. QFO) related to the immune system. Dietary OFO up-regulated the expression of immune-related genes and inflammatory factors, while dietary CoQ10 supplementation reduced these effects.


Assuntos
Bass , Gorduras Insaturadas na Dieta , Animais , Óleos de Peixe , Bass/fisiologia , Suplementos Nutricionais , Dieta , Gorduras Insaturadas na Dieta/metabolismo
10.
Endocr Pract ; 29(1): 48-52, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36307003

RESUMO

OBJECTIVE: This study aims to assess patients' knowledge and identify barriers in interpreting calcium on supplement and nutrition labels and to determine whether education would be beneficial. METHODS: Patients with conditions requiring calcium supplementation were included in this study. Participants were first given a 9-question pre-education survey. They were then taught how to read calcium on labels using the educational cards developed. This was followed by a 7-question posteducation survey. Endocrinologists were surveyed to assess their experience in treating patients who required calcium supplementation. RESULTS: Before education, 31 (33%) and 37 (40%) of the participants felt that the supplement and nutrition labels, respectively, were confusing. After education, only 2 (2%) and 6 (6%) of the participants, respectively, still felt the same. There was a significant improvement in the interpretation of calcium citrate (Citracal) and calcium carbonate (TUMS) labels, with a trend of improvement in reading a milk label. Of the 47 endocrinologists surveyed, only 5 (11%) felt that their patients often or always knew the correct amount of calcium to be taken. Two-thirds 30 (64%) of the endocrinologists always or often explained to their patients how to interpret calcium labels. About half 23 (49%) of the endocrinologists always or often needed to take time to look up the calcium content of supplements. For most endocrinologists 29 (62%), this took at least 2 to 4 minutes. CONCLUSION: Our patients had trouble interpreting calcium labels, and the use of educational cards was effective in improving calcium literacy.


Assuntos
Cálcio , Alfabetização , Humanos , Melhoria de Qualidade , Compreensão , Suplementos Nutricionais , Citrato de Cálcio , Conhecimentos, Atitudes e Prática em Saúde
11.
Clin Lab ; 69(8)2023 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-37560858

RESUMO

BACKGROUND: Congenital nephrotic syndrome (CNS) of the Finnish type (CNF) is an autosomal recessively disorder. NPHS1 gene mutation is the main gene responsible for CNF. This study aimed to explore the clinical manifestations and the characteristics of genetic variation in Chinese patients with CNS. METHODS: A 15-minute-old boy and a 34-day-old girl with CNS were included. NPHS1 gene was detected by next-generation high-throughput sequencing. RESULTS: Patient 1 carried two novel heterozygous mutations of NPHS1 gene, one was c.204delG, p. (Leu69fs) in exon 2 of NPHS1 gene, a heterozygote frameshift mutation; the other was c.3558delT, p. (Gly1187fs) in exon 28, a heterozygote frameshift mutation. Patient 2 carried three heterozygous mutations of NPHS1, among them, c.1561-G>A. p.Asp521Asn in exon 12 is a heterozygous missense mutation. It was identified as possible de novo pathogenicity gene. CONCLUSIONS: Three novel heterozygous mutations of NPHS1 gene were responsible for the patients with CNS and can enlarge the spectrum of NPHS1 gene mutation.


Assuntos
Síndrome Nefrótica , Feminino , Humanos , Lactente , Masculino , População do Leste Asiático , Heterozigoto , Proteínas de Membrana/genética , Mutação , Síndrome Nefrótica/diagnóstico , Síndrome Nefrótica/genética , Recém-Nascido
12.
Curr Microbiol ; 80(12): 391, 2023 Oct 27.
Artigo em Inglês | MEDLINE | ID: mdl-37884702

RESUMO

Staphylococcus aureus, a major opportunistic pathogen in aerobic vaginitis (AV), can potentially invade the host and occasionally cause infections. Estrogen is associated with an altered immune response of vaginal epithelial cells and prevention of certain vaginal infectious diseases. However, the molecular mechanisms involving estrogen and S. aureus adhesion to vaginal epithelial cells remain unclear. Thus, here, VK2/E6E7 vaginal epithelial cells were infected with S. aureus, and the role of the estrogen receptor α-associated signaling pathway (ERα/FAK/Src/iNOS axis) in S. aureus adhesion was evaluated. The estrogen-associated phosphorylation status of ERα, FAK, and Src and the protein level of iNOS were assessed by western blotting. We used a specific ERα inhibitor to validate the involvement of the ERα-associated signaling pathway. The results showed that with exposure to 1 nM estrogen for 24 h, transient ERα-associated pathway activation was observed, and the protein expression upregulation was accompanied by a dose-dependent increase in 17-ß-estradiol (E2) content and increased S. aureus adherence to vaginal epithelial cells. Estrogen-induced activation of the ERα/FAK/Src/iNOS axis was notably inhibited by the specific ERα inhibitor (ICI 182780). Simultaneously, a significant decrease in the number of adherent S. aureus was observed. However, this inhibitory effect diminished after inhibitor treatment for 24 h. Our findings suggested that the ERα-associated signaling pathway might be involved in S. aureus adherence to vaginal epithelial cells, which appeared to be linked to enhanced cell adhesion leading to AV.


Assuntos
Receptor alfa de Estrogênio , Staphylococcus aureus , Feminino , Humanos , Receptor alfa de Estrogênio/genética , Receptor alfa de Estrogênio/metabolismo , Staphylococcus aureus/metabolismo , Estradiol/farmacologia , Transdução de Sinais , Estrogênios/farmacologia , Células Epiteliais
13.
J Med Internet Res ; 25: e43496, 2023 02 22.
Artigo em Inglês | MEDLINE | ID: mdl-36811939

RESUMO

BACKGROUND: In 2022, NHS England announced plans to ensure that all adult primary care patients in England would have full online access to new data added to their general practitioner (GP) record. However, this plan has not yet been fully implemented. Since April 2020, the GP contract in England has already committed to offering patients full online record access on a prospective basis and on request. However, there has been limited research into UK GPs' experiences and opinions about this practice innovation. OBJECTIVE: This study aimed to explore the experiences and opinions of GPs in England about patients' access to their full web-based health record, including clinicians' free-text summaries of the consultation (so-called "open notes"). METHODS: In March 2022, using a convenience sample, we administered a web-based mixed methods survey of 400 GPs in the United Kingdom to explore their experiences and opinions about the impact on patients and GPs' practices to offer patients full online access to their health records. Participants were recruited using the clinician marketing service Doctors.net.uk from registered GPs currently working in England. We conducted a qualitative descriptive analysis of written responses ("comments") to 4 open-ended questions embedded in a web-based questionnaire. RESULTS: Of 400 GPs, 224 (56%) left comments that were classified into 4 major themes: increased strain on GP practices, the potential to harm patients, changes to documentation, and legal concerns. GPs believed that patient access would lead to extra work for them, reduced efficiency, and increased burnout. The participants also believed that access would increase patient anxiety and incur risks to patient safety. Experienced and perceived documentation changes included reduced candor and changes to record functionality. Anticipated legal concerns encompassed fears about increased litigation risks and lack of legal guidance to GPs about how to manage documentation that would be read by patients and potential third parties. CONCLUSIONS: This study provides timely information on the views of GPs in England regarding patient access to their web-based health records. Overwhelmingly, GPs were skeptical about the benefits of access both for patients and to their practices. These views are similar to those expressed by clinicians in other countries, including Nordic countries and the United States before patient access. The survey was limited by the convenience sample, and it is not possible to infer that our sample was representative of the opinions of GPs in England. More extensive, qualitative research is required to understand the perspectives of patients in England after experiencing access to their web-based records. Finally, further research is needed to explore objective measures of the impact of patient access to their records on health outcomes, clinician workload, and changes to documentation.


Assuntos
Clínicos Gerais , Adulto , Humanos , Estudos Prospectivos , Atitude do Pessoal de Saúde , Pesquisa Qualitativa , Inquéritos e Questionários , Atenção Primária à Saúde
14.
Anal Chem ; 94(4): 2189-2194, 2022 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-35044176

RESUMO

The electrochemiluminescence (ECL) immunoassay with its visual and high-throughput detection has received considerable attention in the past decade. However, the development of a facile and cost-effective ECL device is still a great challenge. Herein, a single-electrode electrochemical system (SEES) for the visual and high-throughput ECL immunoassay was developed. The SEES was designed by attaching a plastic sticker with multiple holes onto a single carbon ink screen-printed electrode based on a resistance-induced potential difference. Due to its excellent properties of adsorption and bioaffinity, the carbon ink screen-printed electrode is applied to immobilize antibodies. When cardiac troponin I (cTnI), a specific biomarker of acute myocardial infarction, is present, it will be captured by the immobilized cTnI antibodies on the electrode surface, inhibiting electron transfer, resulting in a decrease of the ECL intensity of the luminol-H2O2 system. Using a smartphone as the detector, cTnI could be determined, ranging from 1 to 1000 ng mL-1, with a detection limit of 0.94 ng mL-1. The SEES based on the carbon ink screen-printed electrode is characterized by its high simplicity, cost effectiveness, and user-friendliness compared with conventional three-electrode systems and bipolar electrochemical systems using electrode arrays and shows superior advantages over other immunoassay strategies, with the elimination of multistep assembling and labeling processes. What is more, the fabricated SEES holds great potential in the point-of-care testing due to its tiny size and the combination of a smartphone detector.


Assuntos
Técnicas Biossensoriais , Técnicas Eletroquímicas , Técnicas Eletroquímicas/métodos , Eletrodos , Peróxido de Hidrogênio , Imunoensaio/métodos , Limite de Detecção , Medições Luminescentes/métodos
15.
Microb Pathog ; 166: 105555, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35487480

RESUMO

Vulvovaginal candidiasis (VVC), a major gynecological disease with high recurrence rate, increases the risk of abortion, intrauterine infection, premature rupture of membranes, and premature birth in pregnancy. However, the exact pathogenesis of this disease has yet to be elucidated. To facilitate understanding of the pathogenesis of VVC in pregnancy, this study sought to establish an animal model of vaginal infection with Candida albicans in pregnant mice. Female mice were mated with male mice, and female mice were infected with C. albicans at E4.5 (embryonic day 4.5). The weight and abortion rate of pregnant mice at E0.5, E4.5, E8.5, E11.5, and E18.5 were recorded, respectively, as well as the weights of fetus and placenta on E18.5. Fetal weight at E18.5 and the weight growth rate in the experimental mice was lower than those in the control mice, but the placenta weight at E18.5 and the abortion rate in the experimental mice were increased with those of the control mice. Hematoxylin-eosin (H&E) staining, Gomori-Grocott staining and vaginal lavage culturing were conducted to verify that the experimental mice were infected with C. albicans. Differentially expressed gene IL-15 was screened out by polymerase chain reaction (PCR) array between the two groups. Enzyme-linked immunosorbent assay (ELISA) showed that IL-15 expression in plasma of the mice was decreased in the experimental group compared with the control group. RT-qPCR confirmed that IL-15 mRNA expression was increased in placental tissues, while mRNA expression of IL-15R/JAK1-JAK3/PI3K/PDK1/AKT/P70S6K-mTOR was decreased in placental tissues. In conclusion, this study demonstrated that VVC in BALB/c pregnant mice led to a series of adverse pregnancy outcomes that were related to changes in IL-15 and its downstream signaling pathways, which may indicate a potential therapy for VVC during pregnancy in humans.


Assuntos
Candidíase Vulvovaginal , Interleucina-15 , Animais , Candida albicans/genética , Candidíase Vulvovaginal/patologia , Feminino , Humanos , Interleucina-15/genética , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Placenta/patologia , Gravidez , Resultado da Gravidez , RNA Mensageiro
16.
Hum Genomics ; 15(1): 39, 2021 06 29.
Artigo em Inglês | MEDLINE | ID: mdl-34187556

RESUMO

BACKGROUND: Liver cancer is one of the most common cancers and causes of cancer death worldwide. The objective was to elucidate novel hub genes which were benefit for diagnosis, prognosis, and targeted therapy in liver cancer via integrated analysis. METHODS: GSE84402, GSE101685, and GSE112791 were filtered from the Gene Expression Omnibus (GEO). Differentially expressed genes (DEGs) were identified by using the GEO2R. The GO and KEGG pathway of DEGs were analyzed in the DAVID. PPI and TF network of the DEGs were constructed by using the STRING, TRANSFAC, and Harmonizome. The relationship between hub genes and prognoses in liver cancer was analyzed in UALCAN based on The Cancer Genome Atlas (TCGA). The diagnostic value of hub genes was evaluated by ROC. The relationship between hub genes and tumor-infiltrate lymphocytes was analyzed in TIMER. The protein levels of hub genes were verified in HPA. The interaction between the hub genes and the drug were identified in DGIdb. RESULTS: In total, 108 upregulated and 60 downregulated DEGs were enriched in 148 GO terms and 20 KEGG pathways. The mRNA levels and protein levels of CDK1, HMMR, PTTG1, and TTK were higher in liver cancer tissues compared to normal tissues, which showed excellent diagnostic and prognostic value. CDK1, HMMR, PTTG1, and TTK were positively correlated with tumor-infiltrate lymphocytes, which might involve tumor immune response. The CDK1, HMMR, and TTK had close interaction with anticancer agents. CONCLUSIONS: The CDK1, HMMR, PTTG1, and TTK were hub genes in liver cancer; hence, they might be potential biomarkers for diagnosis, prognosis, and targeted therapy of liver cancer.


Assuntos
Proteína Quinase CDC2/genética , Carcinoma Hepatocelular/genética , Proteínas de Ciclo Celular/genética , Proteínas da Matriz Extracelular/genética , Receptores de Hialuronatos/genética , Neoplasias Hepáticas/genética , Proteínas Serina-Treonina Quinases/genética , Proteínas Tirosina Quinases/genética , Securina/genética , Biomarcadores Tumorais/genética , Carcinoma Hepatocelular/diagnóstico , Carcinoma Hepatocelular/patologia , Bases de Dados Genéticas , Regulação Neoplásica da Expressão Gênica/genética , Redes Reguladoras de Genes/genética , Humanos , Neoplasias Hepáticas/diagnóstico , Neoplasias Hepáticas/patologia , Proteínas de Neoplasias/genética , Prognóstico , Mapas de Interação de Proteínas/genética , Transcriptoma/genética
17.
J Clin Lab Anal ; 36(1): e24050, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34786765

RESUMO

BACKGROUND: Maternal intrapartum fever has a serious impact on mother and child. However, the corresponding study seems to be in short. METHODS: The role of inflammatory cells in patients who were diagnosed with intrapartum fever lived in part of Eastern China was evaluated. The obstetrics outcomes, complete blood cell count (CBC) and thereby converted neutrophil to lymphocyte ratio (NLR), platelet to lymphocyte ratio, monocyte to lymphocyte ratio (MLR), and vaginal secretion were compared in different groups. RESULTS: Prepartum values of white blood cell (WBC), red blood cell (RBC), and hemoglobin (Hb) were all a little higher in the febrile group than in the afebrile group, and postpartum WBC in the afebrile group was still higher while postpartum RBC and Hb were inferior to non-fever maternity. Postpartum NLR and MLR were all higher in the fever group but not preferred overtly difference before delivery. Additionally, the comparison of WBC, RBC, Hb, platelets, neutrophils, and monocytes in prepartum and postpartum all showed significant differences. CONCLUSION: The parturition could bring about the value change of CBC and intrapartum fever might aggravate or alleviate this change. Besides, the intrapartum fever might not be caused mainly by infection and the difference between bacteria and fungus could reflect in the CBC.


Assuntos
Febre , Período Periparto/fisiologia , Complicações na Gravidez , Adulto , Contagem de Células Sanguíneas , China/epidemiologia , Estudos Transversais , Feminino , Febre/epidemiologia , Febre/fisiopatologia , Humanos , Recém-Nascido , Parto , Gravidez , Complicações na Gravidez/epidemiologia , Complicações na Gravidez/fisiopatologia , Resultado da Gravidez/epidemiologia
18.
Int J Mol Sci ; 23(21)2022 Oct 28.
Artigo em Inglês | MEDLINE | ID: mdl-36361902

RESUMO

The central nervous system (CNS) controls and regulates the functional activities of the organ systems and maintains the unity between the body and the external environment. The advent of co-culture systems has made it possible to elucidate the interactions between neural cells in vitro and to reproduce complex neural circuits. Here, we classified the co-culture system as a two-dimensional (2D) co-culture system, a cell-based three-dimensional (3D) co-culture system, a tissue slice-based 3D co-culture system, an organoid-based 3D co-culture system, and a microfluidic platform-based 3D co-culture system. We provide an overview of these different co-culture models and their applications in the study of neural cell interaction. The application of co-culture systems in virus-infected CNS disease models is also discussed here. Finally, the direction of the co-culture system in future research is prospected.


Assuntos
Técnicas de Cultura de Células , Organoides , Técnicas de Cocultura , Técnicas de Cultura de Células/métodos , Neurônios , Comunicação Celular
19.
J Gen Intern Med ; 36(9): 2571-2578, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-33528782

RESUMO

BACKGROUND: Sharing outpatient notes with patients may bring clinically important benefits, but notes may sometimes cause patients to feel judged or offended, and thereby reduce trust. OBJECTIVE: As part of a larger survey examining the effects of open notes, we sought to understand how many patients feel judged or offended due to something they read in outpatient notes, and why. DESIGN: We analyzed responses from a large Internet survey of adult patients who used secure patient portals and had at least 1 visit note available in a 12-month period at 2 large academic medical systems in Boston and Seattle, and in a rural integrated health system in Pennsylvania. PARTICIPANTS: Adult ambulatory patients with portal accounts in health systems that offered open notes for up to 7 years. APPROACH: (1) Quantitative analysis of 2 dichotomous questions, and (2) qualitative thematic analysis of free-text responses on what patients found judgmental or offensive. KEY RESULTS: Among 22,959 patient respondents who had read at least one note and answered the 2 questions, 2,411 (10.5%) reported feeling judged and/or offended by something they read in their note(s). Patients who reported poor health, unemployment, or inability to work were more likely to feel judged or offended. Among the 2,411 patients who felt judged and/or offended, 2,137 (84.5%) wrote about what prompted their feelings. Three thematic domains emerged: (1) errors and surprises, (2) labeling, and (3) disrespect. CONCLUSIONS: One in 10 respondents reported feeling judged/offended by something they read in an outpatient note due to the perception that it contained errors, surprises, labeling, or evidence of disrespect. The content and tone may be particularly important to patients in poor health. Enhanced clinician awareness of the patient perspective may promote an improved medical lexicon, reduce the transmission of bias to other clinicians, and reinforce healing relationships.


Assuntos
Pacientes Ambulatoriais , Portais do Paciente , Adulto , Registros Eletrônicos de Saúde , Humanos , Pennsylvania , Inquéritos e Questionários
20.
Nutr Cancer ; 73(11-12): 2568-2578, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33153324

RESUMO

The purpose of this study is to discover novel hub genes which are helpful for diagnosis, prognosis, and targeted therapy in colorectal cancer (CRC) by using bioinformatics analysis. GSE74602, GSE110225, and GSE113513 were extracted from the gene expression omnibus (GEO). Differentially expressed genes (DEGs) in expression profiles were identified by GEO2R. Gene ontology and Kyoto Encyclopedia of Genes and Genomes analyses of the DEGs were carried out in the Database for Annotation, Visualization, and Integrated Discovery (DAVID). String database and cytoscape were used for building protein-protein interaction (PPI) network and module analysis. The UALCAN was used for in-depth analysis of data of CRC patients from The Cancer Genome Atlas (TCGA) to identify expression levels and overall survival rates of hub genes. The DEGs included 107 up-regulation genes and 232 down-regulation genes. Twenty-nine (29) hub genes and two significant modules were screened from PPI network. The expression levels of hub genes in TCGA were verified. Survival analysis curve indicated high expression of CCNA2, CCNB1, DLGAP5, were related to high survival rates, and low expression of TIMP1 were associated with high survival rates. These results suggest that DEGs may be the hub genes of CRC, and CCNA2, CCNB1, DLGAP5, TIMP1 may be the potential prognostic markers of CRC.


Assuntos
Neoplasias Colorretais , Biologia Computacional , Biomarcadores Tumorais/genética , Biomarcadores Tumorais/metabolismo , Biologia Computacional/métodos , Perfilação da Expressão Gênica , Regulação Neoplásica da Expressão Gênica , Humanos , Prognóstico
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