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1.
Front Endocrinol (Lausanne) ; 15: 1323994, 2024.
Article En | MEDLINE | ID: mdl-38405150

Background: Thyroid autoimmunity is one of the most prevalent autoimmune diseases. However, its association with extra-thyroid diseases and mortality risk in the general population remains uncertain. Our study aims to evaluate the association of thyroid autoimmunity with extra-thyroid disease and the risk of mortality. Methods: A prospective cohort study was conducted using data from the National Health and Nutrition Examination Survey (NHANES) with participants from 2007-2008, 2009-2010, and 2011-2012, tracking their mortality until 2019. Associations between thyroid autoimmunity, which was defined as having positive thyroid peroxidase antibody (TPOAb) and/or thyroglobulin antibody (TgAb), and extra-thyroid disease including diabetes, hypertension, cardiovascular disease, chronic lung disease, arthritis, cancer and chronic renal disease and the risk of mortality were investigated. Results: A total of 7431 participants were included in this study. Positive The prevalence of positive TgAb was 7.54%, and positive TPOAb prevalence was 11.48%. TgAb was significantly associated with diabetes (Model 1: OR=1.64, 95% CI:1.08-2.50; Model 2: OR=1.93, 95% CI: 1.21-3.08) and hypertension (Model 1: OR=0.67, 95% CI: 0.49-0.91; Model 2: OR=0.62, 95% CI: 0.44-0.88). TPOAb was associated with a lower prevalence of chronic lung disease (model 1: OR=0.71, 95% CI: 0.54-0.95; model 2: OR=0.71, 95% CI: 0.53-0.95). No associations were observed between TgAb, TPOAb and other extra-thyroid diseases. Neither TgAb nor TPOAb were associated with all-cause mortality or heart disease mortality. Conclusion: TgAb was linked to a higher prevalence of diabetes and a lower prevalence of hypertension, while TPOAb was associated with a decreased prevalence of chronic lung disease. However, neither TgAb nor TPOAb posed a risk for all-cause mortality or heart disease mortality.


Autoimmune Diseases , Diabetes Mellitus , Heart Diseases , Hypertension , Lung Diseases , Thyroid Diseases , Adult , Humans , Autoimmunity , Nutrition Surveys , Prospective Studies , Iodide Peroxidase , Thyroid Diseases/complications , Thyroid Diseases/epidemiology , Diabetes Mellitus/epidemiology , Hypertension/epidemiology
2.
JAMA Netw Open ; 6(11): e2339254, 2023 Nov 01.
Article En | MEDLINE | ID: mdl-37955902

Importance: Estimating absolute risk of lung cancer for never-smoking individuals is important to inform lung cancer screening programs. Objectives: To integrate data on environmental tobacco smoke (ETS), a known lung cancer risk factor, with a polygenic risk score (PRS) that captures overall genetic susceptibility, to estimate the absolute risk of lung adenocarcinoma (LUAD) among never-smokers in Taiwan. Design, Setting, and Participants: The analyses were conducted in never-smoking women in the Taiwan Genetic Epidemiology Study of Lung Adenocarcinoma, a case-control study. Participants were recruited between September 17, 2002, and March 30, 2011. Data analysis was performed from January 17 to July 15, 2022. Exposures: A PRS was derived using 25 genetic variants that achieved genome-wide significance (P < 5 × 10-8) in a recent genome-wide association study, and ETS was defined as never exposed, exposed at home or at work, and exposed at home and at work. Main Outcomes and Measures: The Individualized Coherent Absolute Risk Estimator software was used to estimate the lifetime absolute risk of LUAD in never-smoking women aged 40 years over a projected 40-year span among the controls by using the relative risk estimates for the PRS and ETS exposures, as well as age-specific lung cancer incidence rates for never-smokers in Taiwan. Likelihood ratio tests were conducted to assess an additive interaction between the PRS and ETS exposure. Results: Data were obtained on 1024 women with LUAD (mean [SD] age, 59.6 [11.4] years, 47.9% ever exposed to ETS at home, and 19.5% ever exposed to ETS at work) and 1024 controls (mean [SD] age, 58.9 [11.0] years, 37.0% ever exposed to ETS at home, and 14.3% ever exposed to ETS at work). The overall average lifetime 40-year absolute risk of LUAD estimated using PRS alone was 2.5% (range, 0.6%-10.3%) among women never exposed to ETS. When integrating both ETS and PRS data, the estimated absolute risk was 3.7% (range, 0.6%-14.5%) for women exposed to ETS at home or work and 5.3% (range, 1.2%-12.1%) for women exposed to ETS at home and work. A super-additive interaction between ETS and the PRS (P = 6.5 × 10-4 for interaction) was identified. Conclusions and Relevance: This study found differences in absolute risk of LUAD attributed to genetic susceptibility according to levels of ETS exposure in never-smoking women. Future studies are warranted to integrate these findings in expanded risk models for LUAD.


Adenocarcinoma of Lung , Lung Neoplasms , Tobacco Smoke Pollution , Female , Humans , Middle Aged , Tobacco Smoke Pollution/adverse effects , Case-Control Studies , Early Detection of Cancer , Genetic Predisposition to Disease , Genome-Wide Association Study , Taiwan/epidemiology , Lung Neoplasms/etiology , Lung Neoplasms/genetics , Smoking , Risk Factors , Adenocarcinoma of Lung/epidemiology , Adenocarcinoma of Lung/genetics
3.
Infect Dis Poverty ; 12(1): 86, 2023 Sep 21.
Article En | MEDLINE | ID: mdl-37735709

The human papillomavirus (HPV) vaccine is the first vaccine developed specifically targeting the prevention of cervical cancer. For more than 15 years, China has expedited a series of efforts on research and development of the domestically manufactured HPV vaccines, producing local population-based evidence, promoting free HPV vaccination from pilots, and launching action plans to tackle barriers in the scale-up of HPV vaccination. To further roll out the HPV vaccination program in China, several challenges should be addressed to support the steps forward. The availability of more locally manufactured HPV vaccines, pricing negotiation and local evidence supporting the efficacy of one-dose schedule would greatly alleviate the continued supply and financial constraints in China. Meanwhile, more attention should be paid to girls living in low-resource areas and males to ensure equal access to the HPV vaccination. Furthermore, linkage to secondary prevention and further real-world monitoring and evaluation are warranted to inform effective cervical cancer prevention strategies in the post-vaccine era.


Papillomavirus Infections , Papillomavirus Vaccines , Uterine Cervical Neoplasms , Female , Male , Humans , Human Papillomavirus Viruses , Papillomavirus Infections/prevention & control , Uterine Cervical Neoplasms/prevention & control , Vaccination , China
4.
Curr Alzheimer Res ; 20(7): 471-480, 2023.
Article En | MEDLINE | ID: mdl-37711111

BACKGROUND: MicroRNA (miR)-125a-3p is reported to play an important role in some central nervous system diseases, such as Alzheimer's disease (AD). However, a study has not been conducted on the mechanism of miR-125a-3p in the pathological process of AD. METHODS: First, we assessed the expression of miR-125a-3p in AD cohort. Subsequently, we altered the expressions of miR-125a-3p to assess its role in cell viability, cell apoptosis, amyloid-ß (Aß) metabolism, and synaptic activity. Finally, we identified its potential mechanism underlying AD pathology. RESULTS: This study unveiled the potential function of miR-125a-3p through modulating amyloid precursor protein processing. Additionally, miR-125a-3p influenced cell survival and activated synaptic expression through the modulation of Aß metabolism in the mitogen-activated protein kinase (MAPK) pathway via fibroblast growth factor receptor 2. CONCLUSION: Our study indicates that targeting miR-125a-3p may be an applicable therapy for AD in the future. However, more in vitro and in vivo studies with more samples are needed to confirm these results.


Alzheimer Disease , MicroRNAs , Humans , Amyloid beta-Peptides/metabolism , Alzheimer Disease/metabolism , MicroRNAs/genetics , MicroRNAs/metabolism , Mitogen-Activated Protein Kinases , Amyloid beta-Protein Precursor/genetics
5.
Cancer Epidemiol Biomarkers Prev ; 31(12): 2208-2218, 2022 12 05.
Article En | MEDLINE | ID: mdl-36129788

BACKGROUND: Methods synthesizing multiple data sources without prospective datasets have been proposed for absolute risk model development. This study proposed methods for adapting risk models for another population without prospective cohorts, which would help alleviate the health disparities caused by advances in absolute risk models. To exemplify, we adapted the lung cancer risk model PLCOM2012, well studied in the west, for Taiwan. METHODS: Using Taiwanese multiple data sources, we formed an age-matched case-control study of ever-smokers (AMCCSE), estimated the number of ever-smoking lung cancer patients in 2011-2016 (NESLP2011), and synthesized a dataset resembling the population of cancer-free ever-smokers in 2010 regarding the PLCOM2012 risk factors (SPES2010). The AMCCSE was used to estimate the overall calibration slope, and the requirement that NESLP2011 equals the estimated total risk of individuals in SPES2010 was used to handle the calibration-in-the-large problem. RESULTS: The adapted model PLCOT-1 (PLCOT-2) had an AUC of 0.78 (0.75). They had high performance in calibration and clinical usefulness on subgroups of SPES2010 defined by age and smoking experience. Selecting the same number of individuals for low-dose computed tomography screening using PLCOT-1 (PLCOT-2) would have identified approximately 6% (8%) more lung cancers than the US Preventive Services Task Forces 2021 criteria. Smokers having 40+ pack-years had an average PLCOT-1 (PLCOT-2) risk of 3.8% (2.6%). CONCLUSIONS: The adapted PLCOT models had high predictive performance. IMPACT: The PLCOT models could be used to design lung cancer screening programs in Taiwan. The methods could be applicable to other cancer models.


Lung Neoplasms , Humans , Lung Neoplasms/epidemiology , Early Detection of Cancer , Taiwan/epidemiology , Case-Control Studies , Smokers
6.
Phytochemistry ; 204: 113457, 2022 Dec.
Article En | MEDLINE | ID: mdl-36179821

Five undescribed abietane diterpenoids, along with eight known analogs, were isolated from Phlegmariurus carinatus. Their structures were unambiguously elucidated by extensive analysis of spectroscopic data and comparison between the literature. The absolute configuration of phlecarinatone C was determined by evaluating ECD spectra. Four undescribed abietane diterpenoids and eight known analogs were tested for their neuroprotective and cytotoxic activities, separately. Teuvincenone C showed potential neuroprotective effect against Hemin-induced HT22 cell damage. Importantly, phlecarinatone C showed pronounced cytotoxic effect against U251 cells in vitro assays. The biological evaluation revealed that phlecarinatone C could inhibit proliferation, migration, and invasion in a concentration-dependent manner of U251 cells. Meanwhile, phlecarinatone C effectively reversed epithelial-to-mesenchymal transition (EMT) and promoted U251 cells apoptosis via a mitochondrial apoptotic pathway. Taken together, phlecarinatone C might be a valuable candidate for anti-metastatic agents against glioblastoma treatment.

7.
Nat Prod Res ; 36(23): 6006-6011, 2022 Dec.
Article En | MEDLINE | ID: mdl-35369804

Two new abietane diterpenoids, phlecarinatone A (1) and phlecarinatone B (2), along with two known analogues (3 and 4), were isolated from Phlegmariurus carinatus. The structures of 1 - 4 were unambiguously elucidated by comprehensive spectroscopic analyses. Abietane diterpenoids were isolated from the plant for the first time. All isolates were tested for their neuroprotective activities against H2O2-induced SH-SY5Y cells injury, and compound 2 showed moderate effect at the concentrations ranging from 5 ∼ 20 µM in vitro assay.


Lycopodiaceae , Neuroblastoma , Humans , Abietanes/pharmacology , Abietanes/chemistry , Hydrogen Peroxide/pharmacology , Molecular Structure
8.
Psychiatr Genet ; 31(6): 216-229, 2021 12 01.
Article En | MEDLINE | ID: mdl-34347684

BACKGROUND: Complement component (3b/4b) receptor 1 (CR1) is an interesting candidate gene which has a close connection with Alzheimer's disease, and its polymorphisms have been reported to link to the late-onset Alzheimer's disease (LOAD) susceptibility. However, the findings of these related studies are inconsistent. Objective To explore the effect of CR1 genetic variants in LOAD susceptibility. MethodsWe searched relevant studies for the period up to 1 November 2020. And odds ratios (ORs) and their 95% confidence intervals (CIs) were utilized to assess the strength of the association. In addition, we carried out a case-control association study to assess their genetic association. RESULTS: Finally, a total of 30 articles with 30108 LOAD cases and 37895 controls were included. Significant allele frequency between LOAD patients and controls was observed in rs3818361 and rs6656401 (rs3818361, T vs. C: OR,1.18; 95% CI, 1.13-1.23; rs6656401, A vs. G: OR, 1.23; 95% CI, 1.10-1.36). Moreover, these results remain significant in subgroup of rs3818361 in Asia or America (OR,1.26; 95% CI,1.06-1.45; OR, 1.18; 95% CI, 1.13-1.24, respectively) and rs6656401 in Europe (OR = 1.26; 95% CI, 1.09-1.42). In addition, the two single nucleotide polymorphisms were proved to significantly increase LOAD risk in the overall population under the dominant model (OR = 1.12; 95% CI, 1.02-1.21; OR = 1.18, 95% CI, 1.15-1.22, respectively). Our case-control study showed that the distribution of rs6656401 genotype was significant (P = 0.000; OR, 6.889; 95% CI, 2.709-17.520), suggesting the A allele of rs6656401 is the risk allele. CONCLUSION: These available data indicate that rs6656401 in CR1 is significant to increase LOAD risk.


Alzheimer Disease , Alzheimer Disease/genetics , Case-Control Studies , Genetic Predisposition to Disease , Genotype , Humans , Polymorphism, Single Nucleotide/genetics , Receptors, Complement 3b/genetics
9.
Environ Geochem Health ; 42(3): 969-985, 2020 Mar.
Article En | MEDLINE | ID: mdl-32193806

In different regions of China, climate change has various influences on urban and rural residential energy consumption, which also shows that the research on it could be profoundly vital in order to formulate the energy-saving and emission-reducing policies. Based the provincial panel data from 2000-2016, the extended stochastic impacts by regression on population, affluence, and technology (extended STIRPAT) model was utilized to evaluate the impacts of climate change on residential energy consumption in different Chinese regions. The results show that: (1) during 2000 to 2016, the urban and rural energy consumption enlarged by 878.83 billion kWh and 488.98 billion kWh, respectively. In addition, electricity and oil have occupied more proportion in urban energy consumption, while coal still plays an important role in rural residential energy consumption (28.2%). (2) Heating degree day (HDD) and cooling degree day (CDD) have positive influences on urban and rural residential energy consumption in different areas, and the elastic coefficients are 0.028-0.371 and 0.066-0.158, respectively. (3) The elastic coefficient of CDD in urban areas of southern regions (0.158) is much larger than that in northern regions (0.068).


Climate Change , Energy-Generating Resources , Models, Econometric , China , Coal , Energy-Generating Resources/statistics & numerical data , Heating , Humans , Income , Rural Population/statistics & numerical data , Urban Population/statistics & numerical data
10.
Cancer Epidemiol Biomarkers Prev ; 29(2): 452-459, 2020 02.
Article En | MEDLINE | ID: mdl-31848206

BACKGROUND: High disease burden suggests the desirability to identify high-risk Asian never-smoking females (NSF) who may benefit from low-dose CT (LDCT) screening. In North America, one is eligible for LDCT screening if one satisfies the U.S. Preventive Services Task Force (USPSTF) criteria or has model-estimated 6-year risk greater than 0.0151. According to two U.S. reports, only 36.6% female patients with lung cancer met the USPSTF criteria, while 38% of the ever-smokers ages 55 to 74 years met the USPSTF criteria. METHODS: Using data on NSFs in the Taiwan Genetic Epidemiology Study of Lung Adenocarcinoma and the Taiwan Biobank before August 2016, we formed an age-matched case-control study consisting of 1,748 patients with lung cancer and 6,535 controls. Using these and an estimated age-specific lung cancer 6-year incidence rate among Taiwanese NSFs, we developed the Taiwanese NSF Lung Cancer Risk Models using genetic information and simplified questionnaire (TNSF-SQ). Performance evaluation was based on the newer independent datasets: Taiwan Lung Cancer Pharmacogenomics Study (LCPG) and Taiwan Biobank data after August 2016 (TWB2). RESULTS: The AUC based on the NSFs ages 55 to 70 years in LCPG and TWB2 was 0.714 [95% confidence intervals (CI), 0.660-0.768]. For women in TWB2 ages 55 to 70 years, 3.94% (95% CI, 2.95-5.13) had risk higher than 0.0151. For women in LCPG ages 55 to 74 years, 27.03% (95% CI, 19.04-36.28) had risk higher than 0.0151. CONCLUSIONS: TNSF-SQ demonstrated good discriminative power. The ability to identify 27.03% of high-risk Asian NSFs ages 55 to 74 years deserves attention. IMPACT: TNSF-SQ seems potentially useful in selecting Asian NSFs for LDCT screening.


Adenocarcinoma of Lung/epidemiology , Early Detection of Cancer/standards , Lung Neoplasms/epidemiology , Mass Screening/standards , Non-Smokers/statistics & numerical data , Adenocarcinoma of Lung/diagnosis , Age Factors , Aged , Case-Control Studies , Early Detection of Cancer/methods , Female , Humans , Incidence , Lung Neoplasms/diagnosis , Male , Mass Screening/methods , Middle Aged , Practice Guidelines as Topic , Predictive Value of Tests , ROC Curve , Risk Assessment/methods , Risk Assessment/statistics & numerical data , Risk Factors , Surveys and Questionnaires/statistics & numerical data , Taiwan/epidemiology , Tomography, X-Ray Computed/standards
11.
J Hazard Mater ; 364: 376-387, 2019 02 15.
Article En | MEDLINE | ID: mdl-30384248

Sulfur dioxide (SO2) is a hazardous residue in sulfur-fumigated herbs. Standards limiting SO2 content have been adopted worldwide for quality control of sulfur-fumigated herbs, and herbs with less SO2 are believed to be better. However, the standards are based only on the safe dose of SO2 and may not characterize changes in herbal quality, thereby the efficacy and toxicity, resulting from sulfur fumigation. To confirm this, here the correlation of residual SO2 content with the quality/efficacy/toxicity of sulfur-fumigated herb was investigated, and ginseng was selected as a pilot study object. Four sulfur-fumigated ginseng samples with different SO2 contents were systemically compared regarding their quality, anti-inflammatory, anti-shock and anti-stress efficacies, as well as acute and chronic toxicities. The results demonstrated that the SO2 content did not correlate with the quality, efficacy and toxicity changes of ginseng; more specifically, less SO2 residue did not indicate higher quality, better efficacy nor weaker toxicity. This fact suggests that SO2 content cannot characterize the variations in quality, efficacy and toxicity of sulfur-fumigated herbs. Therefore, the standard limiting SO2 content alone may be inadequate for quality control of sulfur-fumigated herbs, and new standards including other indicators that can exactly reflect herbal efficacy and safety are necessary.


Anti-Anxiety Agents , Anti-Inflammatory Agents , Antioxidants , Fumigation , Panax , Plant Extracts , Sulfur Dioxide/analysis , Animals , Anti-Anxiety Agents/pharmacology , Anti-Anxiety Agents/toxicity , Anti-Inflammatory Agents/pharmacology , Anti-Inflammatory Agents/toxicity , Antioxidants/pharmacology , Antioxidants/toxicity , Cell Line , Female , Food Safety , Hypoxia/drug therapy , Male , Mice , Oxidative Stress/drug effects , Pilot Projects , Plant Extracts/pharmacology , Plant Extracts/toxicity , Quality Control , Rats, Sprague-Dawley , Shock, Hemorrhagic/drug therapy , Stress, Psychological/drug therapy , Sulfur
12.
Food Funct ; 9(9): 4897-4905, 2018 Sep 19.
Article En | MEDLINE | ID: mdl-30168566

The aim of this study was to develop an effective method for decreasing the content of histamine and the immunoreactivity of parvalbumin in Decapterus maruadsi. As demonstrated by reverse phase high performance liquid chromatography, no effect on histamine content was found when fish were treated by boiling (100 °C), ultrasonication, ultraviolet irradiation, pressure treatment (121 °C, 0.12 MPa). However, the histamine content was reduced by 73.55% when the Maillard reaction was combined with pressure treatment (MPT). Further, the allergenicity of parvalbumin was retained after boiling, ultrasonication and ultraviolet irradiation, but was effectively decreased when fish were treated by MPT. Animal experimental results showed lower levels of IgE, IgG1 and IgG2a and contents of serum histamine when measured in a group of MPT sensitized mice. These results showed that the MPT is an effective method for simultaneously reducing the histamine content and the immunoreactivity of parvalbumin from Decapterus maruadsi.


Allergens/adverse effects , Fish Products/adverse effects , Fish Proteins, Dietary/adverse effects , Food Handling , Food Hypersensitivity/prevention & control , Histamine/adverse effects , Parvalbumins/adverse effects , Allergens/chemistry , Animals , Cell Line , Cells, Cultured , Female , Fish Products/analysis , Fish Proteins, Dietary/chemistry , Food Hypersensitivity/etiology , Food Hypersensitivity/immunology , Food Hypersensitivity/metabolism , Histamine/analysis , Hot Temperature , Humans , Immunoglobulin E/analysis , Immunoglobulin E/metabolism , Lymphocytes/immunology , Lymphocytes/metabolism , Lymphocytes/pathology , Maillard Reaction , Male , Mast Cells/immunology , Mast Cells/metabolism , Mast Cells/pathology , Mice, Inbred BALB C , Parvalbumins/chemistry , Perciformes , Pressure , Protein Stability , Rats , Specific Pathogen-Free Organisms , Spleen/immunology , Spleen/metabolism , Spleen/pathology
13.
J Agric Food Chem ; 64(9): 1999-2011, 2016 Mar 09.
Article En | MEDLINE | ID: mdl-26886067

The protamine in fish milt can cause anaphylaxis in humans. To determine the allergen in the milt of large yellow croaker (Pseudosciaena crocea), crude extracts were incubated with sera from allergic patients. The results showed that a 12 kDa multicomponent protein was the major allergen in the milt of large yellow croaker. The multicomponent protein was purified, and physicochemical characterization showed that it was a glycoprotein, highly stable in acid-alkali conditions, and weakly retained immunoglobulin E (IgE)-binding activity at high temperatures. Separation and immunoreactivity analysis of the components of the multicomponent protein showed that it had six components, and component 5 had the strongest IgE-binding activity with patient sera. N-terminal sequencing confirmed the multicomponent protein was protamine. Following analysis of protamine from different fish by reversed-phase liquid chromatography and circular dichroism spectra, the protamines from different fish were found to have a similar secondary structure, although their components were different.


Allergens/isolation & purification , Fish Proteins/immunology , Perciformes/immunology , Protamines/immunology , Protamines/isolation & purification , Semen/immunology , Adult , Allergens/chemistry , Allergens/immunology , Amino Acid Sequence , Amino Acids/analysis , Animals , China , Chromatography, High Pressure Liquid , Female , Fish Proteins/chemistry , Fish Proteins/isolation & purification , Food Hypersensitivity/immunology , Glycoproteins/analysis , Humans , Immunoglobulin E/metabolism , Male , Molecular Sequence Data , Nucleoproteins , Protein Structure, Secondary , Sequence Analysis, Protein , Young Adult
14.
J Food Prot ; 78(2): 383-9, 2015 Feb.
Article En | MEDLINE | ID: mdl-25710155

In this study, we investigated the differences in histamine accumulation between blue scad and chub mackerel and methods of inhibiting histamine-forming bacteria and controlling histamine accumulation in fish. The free histidine contents in blue scad and chub mackerel were 1.45 and 2.75 mg/g, respectively. The histamine-forming bacteria isolated from them were identified as Citrobacter freundii, Citrobacter braakii, and Enterobacter aerogenes using 16S rDNA sequence analysis, the VITEK 2 Compact system, and MALDI-TOF MS. The histamine-producing capacities of C. freundii, C. braakii, and E. aerogenes were 470, 1,057, and 4,213 mg/liter, respectively, after culture at 37°C for 48 h. Among the different antimicrobials and preservatives tested, potassium sorbate and sodium diacetate effectively inhibited the histamine-forming bacteria and their histamine production. After chub mackerel was dipped into 0.5% potassium sorbate or sodium diacetate, its histamine content increased more slowly at room temperature. Therefore, a potassium sorbate or sodium diacetate dipping treatment could effectively control histamine accumulation in fish.


Citrobacter freundii/isolation & purification , Citrobacter/isolation & purification , Enterobacter aerogenes/isolation & purification , Fishes/microbiology , Histamine/biosynthesis , Perciformes/microbiology , Acetates/pharmacology , Animals , Citrobacter/metabolism , Citrobacter freundii/metabolism , DNA, Ribosomal , Enterobacter aerogenes/metabolism , Genes, rRNA , Sequence Analysis, DNA , Sorbic Acid/pharmacology
15.
Food Chem Toxicol ; 72: 111-21, 2014 Oct.
Article En | MEDLINE | ID: mdl-25046389

Fish roe, a nutritious food, is favored by consumers, but has also been confirmed to be allergenic in salmonid fish. However, little information is available in other fish species. To determine the allergen in the roe of large yellow croaker (Pseudosciaena crocea), crude extracts were incubated with sera of allergic patients. The major allergen was purified by column chromatography methods, revealing a single band with 16 kDa and was confirmed as ß'-component (ß'-c) by mass spectrometry. The results of physicochemical characterization showed that ß'-c was a glycoprotein and was relatively stable following thermal or acid/alkali treatment. Furthermore, ß'-c was easily degraded by pepsin, but was resistant to trypsin and α-chymotrypsin. After treatment with different processing methods, including Maillard reaction (MR), ultraviolet radiation (UVR), ultrasound-heat (UH), and retorting (RT), the IgG-binding activity of ß'-c decreased obviously by MR, but decreased slightly by UVR and UH. Cross-immunoreactivity results of the allergens in the roes of different species revealed that ß'-c was a specific allergen in teleostean, and the cross-immunoreactivity between the roe of large yellow croaker and other kinds of fish roe was relatively strong.


Allergens/immunology , Antibody Formation/immunology , Fish Proteins/immunology , Food Hypersensitivity/immunology , Seafood/analysis , Adult , Allergens/genetics , Amino Acid Sequence , Animals , Chemical Phenomena , Chymotrypsin/genetics , Chymotrypsin/immunology , Chymotrypsin/metabolism , Cloning, Molecular , Electrophoresis, Polyacrylamide Gel , Female , Fish Proteins/genetics , Humans , Hydrogen-Ion Concentration , Male , Molecular Sequence Data , Perciformes , Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization , Temperature , Ultraviolet Rays , Young Adult
16.
J Agric Food Chem ; 58(4): 2288-94, 2010 Feb 24.
Article En | MEDLINE | ID: mdl-20092251

Protein transduction domains (PTDs) are small peptides with a high content of basic amino acids, and they are responsible for cellular uptake. Many PTDs, including arginine-rich intracellular delivery (AID) peptides, have been shown to transport macromolecules across membranes and into cells. In this study, we demonstrated for the first time that AID peptides could rapidly and efficiently deliver proteins into plant cells in both covalent and noncovalent protein transductions (CNPT) simultaneously. The optimal molecular ratio between an AID peptide carrier and cargo in CNPT was about 3:1. Fluorescence resonance energy transfer (FRET) analysis revealed protein-protein interactions between AID peptide carriers and cargos after CNPT in cells. The possible mechanisms of AID peptides-mediated cellular entry might involve a combination of multiple internalization pathways. Therefore, applications by AID peptide-mediated CNPT may provide a simple and direct transport strategy for delivering two proteins in agricultural systems.


Arginine/metabolism , Peptides/genetics , Biological Transport , Fluorescence Resonance Energy Transfer , Genes, Reporter , Genetic Vectors , Green Fluorescent Proteins/genetics , Kinetics , Solanum lycopersicum/genetics , Solanum lycopersicum/metabolism , Microscopy, Confocal/methods , Peptides/metabolism , Plant Proteins/genetics , Plant Proteins/metabolism , Plasmids , Prunus/genetics , Prunus/metabolism , Restriction Mapping , Transduction, Genetic/methods
17.
Peptides ; 30(9): 1669-78, 2009 Sep.
Article En | MEDLINE | ID: mdl-19524630

Generally, biomacromolecules, such as DNA, RNA, and proteins, cannot freely permeate into cells from outside the membrane. Protein transduction domains (PTDs) are peptides containing a large number of basic amino acids that can deliver macromolecules into living cells. Arginine-rich intracellular delivery (AID) peptides are more effective than other PTD peptides at carrying large molecules across cellular membranes. In the present study, we demonstrated that AID peptides are able to deliver cargo proteins into living cells in both covalent and noncovalent protein transductions (CNPT) synchronously. Human A549 cells were treated with a fluorescent protein (FP) that was noncovalently premixed with another AID-conjugated FP, which emitted a different color. After the delivery of carrier AID-FP and cargo FP into cells, the emission and merge of fluorescence were observed and recorded with a confocal microscope, while the internalization efficiency was quantitatively analyzed with a flow cytometer. The optimal molecular ratio between carrier AID-FP and cargo FP for CNPT is about 1:1/3. Fluorescence resonance energy transfer (FRET) assay further confirmed AID-conjugates can physically interact with its cargo FPs in CNPT in cells. Potential uptake mechanisms of CNPT may involve a combination of multiple internalization pathways. After delivery, intracellular distributions of AID-conjugates and FPs may possibly colocalize with lysosomes. These results will facilitate the understanding of multiple mechanisms of PTDs, and provide a powerful tool for simultaneously delivering several proteins or compounds in protein internalization.


Arginine , Drug Carriers/metabolism , Luminescent Proteins/metabolism , Peptides/metabolism , Protein Transport/physiology , Amiloride/analogs & derivatives , Amiloride/pharmacology , Cell Line, Tumor , Cell Membrane/drug effects , Cell Survival/drug effects , Chlorates/pharmacology , Cytochalasin D/pharmacology , Drug Carriers/pharmacology , Fluorescence Resonance Energy Transfer , Green Fluorescent Proteins/genetics , Green Fluorescent Proteins/metabolism , Humans , Luminescent Proteins/genetics , Luminescent Proteins/pharmacology , Lysosomes/metabolism , Mitochondria/metabolism , Nocodazole/pharmacology , Oligopeptides/genetics , Oligopeptides/metabolism , Peptides/genetics , Pinocytosis/drug effects , Plasmids/genetics , Protein Transport/drug effects , Recombinant Fusion Proteins/metabolism , Recombinant Fusion Proteins/pharmacology , Temperature , beta-Cyclodextrins/pharmacology , Red Fluorescent Protein
18.
Fa Yi Xue Za Zhi ; 20(3): 140-2, 2004.
Article Zh | MEDLINE | ID: mdl-15495804

OBJECTIVE: Using computer image-analyze technique (CIAT) to study changes of geometry parameters in human spleen nuclei and seek a new experimental method to deduce the estimation the postmortem interval (PMI). METHODS: 31 cadavers that known accurate PMI, sampled and smeared respectively every hour within the first 36 hours after death, fixed with cold Carony fixation, stained by Feulgen-van's method, and measured 5 geometry parameters using the image-analyze instrument including Area (A), Mean-Dia (MD), Average Diameter (AD), perimeter (P), Index of density (ID). RESULTS: A, MD, AD and P in the human spleen nuclei have no correlation with the PMI. But ID rose regularly with the prolongation of PMI in 36 hours. There was a definite correlation between ID and the PMI, r=0.983, linear regression equation with PMI (hours) as the dependent variable was calculated for ID. CONCLUSION: Geometry parameter ID was proved to be preferable indexes for estimation of PMI in 36 hours.


Cell Nucleus/metabolism , Forensic Pathology , Spleen/metabolism , Adolescent , Adult , Cell Nucleus/ultrastructure , Cytophotometry/methods , DNA/metabolism , Female , Humans , Image Processing, Computer-Assisted/methods , Male , Middle Aged , Spleen/cytology , Time Factors
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