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Objective: To analyze the correlation between changes in the concentration of glyphosate (GLY) and its metabolites (AMPA) in patients with acute glyphosate poisoning and clinical symptoms, and to provide reference for the study of glyphosate toxicity. Methods: Urine samples from 5 patients with oral glyphosate poisoning admitted to the Emergency Department of Yangzhou Third Class A General Hospital from February to July 2021 were collected. Urine concentrations of GLY and AMPA were measured using derivatization gas chromatography-mass spectrometry, and analyzed based on the patient's clinical manifestations and treatment process. Results: The main symptoms of the patient after poisoning were acute gastrointestinal symptoms, such as nausea, vomiting, abdominal pain, etc. The concentration of GLY in the patient's urine reached its maximum on the first day and gradually decreased over time. On the day of discharge, the final concentration of GLY was 10% lower than the initial concentration. At discharge, the clearance rates of GLY in cases 1, 2, 3, and 4 were 96.97%, 95.91%, 96.87% and 92.87%, respectively. Conclusion: The glyphosate has a shorter maintenance time after entering the human body; There is no correlation between the concentration of glyphosate and its metabolites admitted to the hospital, the dose of poisoning, and clinical symptoms in poisoned patients.
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Glicina , Glifosato , Humanos , Glicina/análogos & derivados , Glicina/envenenamiento , Glicina/orina , Adulto , Masculino , Cromatografía de Gases y Espectrometría de Masas , Femenino , Herbicidas/envenenamiento , Herbicidas/orina , Persona de Mediana EdadRESUMEN
PURPOSE: This study aimed to design an autodelineation model based on convolutional neural networks for generating high-risk clinical target volumes and organs at risk in image-guided adaptive brachytherapy for cervical cancer. MATERIALS AND METHODS: A novel SERes-u-net was trained and tested using CT scans from 98 patients with locally advanced cervical cancer who underwent image-guided adaptive brachytherapy. The Dice similarity coefficient, 95th percentile Hausdorff distance, and clinical assessment were used for evaluation. RESULTS: The mean Dice similarity coefficients of our model were 80.8%, 91.9%, 85.2%, 60.4%, and 82.8% for the high-risk clinical target volumes, bladder, rectum, sigmoid, and bowel loops, respectively. The corresponding 95th percentile Hausdorff distances were 5.23mm, 4.75mm, 4.06mm, 30.0mm, and 20.5mm. The evaluation results revealed that 99.3% of the convolutional neural networks-generated high-risk clinical target volumes slices were acceptable for oncologist A and 100% for oncologist B. Most segmentations of the organs at risk were clinically acceptable, except for the 25% sigmoid, which required significant revision in the opinion of oncologist A. There was a significant difference in the clinical evaluation of convolutional neural networks-generated high-risk clinical target volumes between the two oncologists (P<0.001), whereas the score differences of the organs at risk were not significant between the two oncologists. In the consistency evaluation, a large discrepancy was observed between senior and junior clinicians. About 40% of SERes-u-net-generated contours were thought to be better by junior clinicians. CONCLUSION: The high-risk clinical target volumes and organs at risk of cervical cancer generated by the proposed convolutional neural networks model can be used clinically, potentially improving segmentation consistency and efficiency of contouring in image-guided adaptive brachytherapy workflow.
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Braquiterapia , Redes Neurales de la Computación , Órganos en Riesgo , Radioterapia Guiada por Imagen , Recto , Neoplasias del Cuello Uterino , Humanos , Neoplasias del Cuello Uterino/radioterapia , Neoplasias del Cuello Uterino/diagnóstico por imagen , Neoplasias del Cuello Uterino/patología , Braquiterapia/métodos , Órganos en Riesgo/diagnóstico por imagen , Órganos en Riesgo/efectos de la radiación , Femenino , Radioterapia Guiada por Imagen/métodos , Recto/diagnóstico por imagen , Tomografía Computarizada por Rayos X/métodos , Vejiga Urinaria/diagnóstico por imagen , Vejiga Urinaria/efectos de la radiación , Colon Sigmoide/diagnóstico por imagen , Planificación de la Radioterapia Asistida por Computador/métodos , Persona de Mediana Edad , AdultoRESUMEN
To reduce the working coefficient and jitter of the three-electrode gas switch used in linear transformer drivers, a novel trigger method that uses a nanosecond pulse in cooperation with the microplasma jet generated by capillary discharge was developed. A microplasma jet was generated by the nanosecond trigger pulse and injected into the follow-up breakdown gap of the gas switch to decrease the working coefficient. The influence of capillary parameters on the development of the microplasma jet was simulated. The results showed that the microplasma jet significantly reduced the breakdown delay time, jitter, and working coefficient. Increasing the capillary length and decreasing the diameter results in better triggered breakdown performance. Furthermore, the gas switch triggered by a positive pulse exhibits a lower breakdown delay and jitter. Combined with the intensified charge coupled device's shooting results, it can be concluded that the microplasma jet has a distinct influence on streamer formation, which is important for improving the working performance of the gas switch.
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BACKGROUND: Madelung's disease is a rare disorder characterized by massive deposits of excess subcutaneous fat around the neck, shoulders, arms, and other parts of the body. It has a high prevalence among middle-aged alcoholic men in Mediterranean countries and a low incidence in Asian populations. Although patients with Madelung's disease are often associated with a variety of alcohol-induced metabolic disorders, the comorbidity of alcoholic cardiomyopathy is rarely reported, probably because of its low incidence or neglect by clinicians. CASE REPORT: A 67-year-old man with a 10-year history of soft fat masses in the neck developed chest tightness and shortness of breath on exertion for the past 2 years. Laboratory tests revealed elevated γ-glutamyl transferase, glucose intolerance, hyperuricemia, hyperlipidemia, and anemia. Computed tomography of the neck showed symmetric nonencapsulated fat deposits, mainly in the anterior cervical regions. Echocardiography showed left heart enlargement and severe global left ventricular systolic dysfunction with an ejection fraction of 31%. Coronary angiography revealed 40-50% stenoses of the left anterior descending and right coronary arteries. After the exclusion of other causes of dilated cardiomyopathy, the patient was finally diagnosed with type I Madelung's disease and alcoholic cardiomyopathy. He underwent lifestyle changes, including reducing his alcohol intake, and received full pharmacological treatment for heart failure. One and a half years later, his cardiac function was partially restored, and all metabolic abnormalities improved except for elevated liver enzymes. CONCLUSIONS: Alcohol use disorder should be assessed in patients with newly diagnosed Madelung's disease. Screening for alcoholic cardiomyopathy in alcoholic patients with Madelung's disease is necessary for early detection of cardiac abnormalities and intervention to improve the prognosis of this group of patients.
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Cardiomiopatía Alcohólica , Lipomatosis Simétrica Múltiple , Anciano , Humanos , Masculino , Cardiomiopatía Alcohólica/diagnóstico , Pueblos del Este de Asia , Lipomatosis Simétrica Múltiple/diagnósticoRESUMEN
"Different prescriptions with the same name" is a common phenomenon clinically in traditional Chinese medicine prescriptions. Huanglong Decoction can be regarded as a representative example of this phenomenon with many changes to the contents of the decoction during its development. To clarify and identify the typology of Huanglong Decoction, this paper attempts to explore the origins and evolution of almost all types of Huanglong Decoction with an archival method examining data before 1911. It was found that Huanglong Decoction has at least seven main types: Fecal Liquid, Xiaochaihu Decoction Plus or Minus, Tao's, Taiping Shenghui Fang, Shengji Zonglu, Fu's and Zhulin Gynecology Treatment. Xiaochaihu Decoction Plus or Minus (Xiao Chai Hu Tang Jia Jian) includes four subcategories: Yao's Huanglong Decoction, Gujin Luyan Huanglong Decoction, Leizheng Huorenshu Huanglong Decoction, and Qian's Huanglong Decoction. It was also found that Xinjia Huanglong Decoction is derived from Tao's Huanglong Decoction.
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Medicamentos Herbarios Chinos , Medicina Tradicional China , Medicamentos Herbarios Chinos/historia , Medicina Tradicional China/historia , Historia del Siglo XX , HumanosRESUMEN
Objective: To explore the association between obesity/overweight and the risk of malignancy in Hürthle cell neoplasms of the thyroid. Methods: The data of patients with complete data who were diagnosed with Hürthle cell neoplasms of the thyroid at the Third Hospital of Peking University from September 2016 to September 2023 were retrospectively collected. Based on postoperative pathological diagnosis, tumors were classified into thyroid Hürthle cell adenoma group and Hürthle cell carcinoma group. Multivariate logistic regression analysis was employed to explore the association between overweight/obesity and the risk of malignancy in Hürthle cell neoplasms of the thyroid. Results: A total of 102 patients (13 males and 89 females) were included, aged (48.7±13.1) years. There were 22 cases of thyroid Hürthle cell carcinoma and 80 cases of thyroid Hürthle cell adenoma. Univariate analysis showed that the rate of overweight/obesity in the Hürthle cell carcinoma group was higher than that in the adenoma group [73% (16/22) vs 46% (37/80), P=0.050]. Multivariate logistic regression analysis indicated that the overweight/obese patients had a higher risk of malignancy in Hürthle cell neoplasms of the thyroid compared with the non-overweight/obese patients (OR=3.170, 95%CI: 1.126-9.955, P=0.035). Sensitivity analysis excluding individuals with multiple tumors was consistent with the main study results (OR=2.878, 95%CI: 0.922-10.228, P=0.080). Conclusion: Overweight/obesity may be associated with a higher risk of malignancy in patients with Hürthle cell neoplasms of the thyroid.
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Adenoma Oxifílico , Obesidad , Sobrepeso , Neoplasias de la Tiroides , Humanos , Masculino , Femenino , Adenoma Oxifílico/patología , Persona de Mediana Edad , Neoplasias de la Tiroides/etiología , Neoplasias de la Tiroides/patología , Neoplasias de la Tiroides/epidemiología , Estudios Retrospectivos , Obesidad/complicaciones , Factores de Riesgo , Sobrepeso/complicaciones , Adulto , Modelos Logísticos , Adenoma/patología , Adenoma/epidemiologíaRESUMEN
Objective: To investigate the postoperative outcomes and visual quality following laser blended vision (LBV) surgery for the correction of myopia with presbyopia. Methods: This is a prospective study. A total of 50 patients (100 eyes) who underwent LBV surgery for myopia with presbyopia at Beijing Tongren Hospital, Capital Medical University, between August 2021 and March 2022 were included. Uncorrected distance visual acuity (UDVA), uncorrected near visual acuity (UNVA), best-corrected distance visual acuity (BCDVA), manifest refraction spherical equivalent (MRSE) were measured preoperatively and at 1, 3, 6, 12, and 24 months postoperatively for the dominant eye, non-dominant eye, and both eyes. Effectiveness Index (EI) and Safety Index (SI) were calculated to evaluate refractive outcomes. Accommodation function and contrast sensitivity were assessed to evaluate functional vision. Objective visual quality was assessed using higher-order aberrations (HOAs) and a dual-channel visual quality analysis system. Subjective visual quality was evaluated using a questionnaire. Results: At 24 months postoperatively, the EI and SI for the dominant eye were 1.04±0.23 and 1.14±0.14, respectively, while for the non-dominant eye, they were 0.85±0.21 and 1.06±0.08, respectively. Although there were statistically significant differences in UNVA between the eyes at 1 and 3 months postoperatively (all P<0.05), no significant differences were observed from 6 months onward (all P>0.05). At 6 months postoperatively, the UNVA for the dominant and non-dominant eyes were 0.07±0.13 and 0.03±0.13, respectively, with no significant difference (P>0.05). MRSE showed no significant differences at any follow-up time points up to 24 months. Accommodation function did not decrease compared to preoperative levels at any postoperative follow-up. Increases in HOAs were primarily due to spherical aberrations, and there were no significant differences in objective visual quality before and after surgery. Contrast sensitivity improved significantly at 24 months postoperatively compared to preoperative levels. At 24 months postoperatively, 11 out of 12 patients reported good visual quality in the questionnaire. Conclusions: LBV surgery gradually achieves good binocular blended vision within 6 months postoperatively and demonstrates good safety, efficacy, and stability at 24 months. It maintains good functional vision and visual quality with high postoperative patient satisfaction.
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Miopía , Presbiopía , Refracción Ocular , Agudeza Visual , Humanos , Presbiopía/cirugía , Miopía/cirugía , Estudios Prospectivos , Resultado del Tratamiento , Periodo Posoperatorio , Sensibilidad de Contraste , Masculino , FemeninoRESUMEN
Presbyopia refers to a phenomenon in which the ability of the eye to accommodate is insufficient to meet the daily demand for proximity due to age. In modern society, more and more patients over 40 years old want to solve visual problems caused by presbyopia and refractive errors, which poses new challenges for clinical laser corneal refractive surgery, and a variety of combined presbyopia correction technologies and programs have emerged. However, whether laser corneal refractive surgery combined with presbyopia correction technology could treat presbyopia deserves clinical attention. Based on the mechanism of laser corneal refractive surgery and various presbyopia correction techniques, this article deeply analyzes the purpose and effect of laser corneal refractive surgery combined with presbyopia correction technology. It is proposed that this surgical treatment could only play a role in correcting presbyopia at present and should be performed accordingly.
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Presbiopía , Humanos , Presbiopía/cirugía , Cirugía Laser de Córnea/métodos , Procedimientos Quirúrgicos Refractivos/métodosRESUMEN
With the population aging, the increasing number of presbyopia patients and the growing demand for correction have become pressing visual challenges. In recent years, presbyopia correction surgery has been a clinical focus, with ongoing innovations in surgical mechanisms and methods, but significant issues remain unresolved. This article explores the advancements and challenges in various presbyopia correction procedures, identifies key future trends and directions, and aims to provide guidance for improving the safety, efficacy, practicality, and longevity of these procedures in line with natural aging processes.
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Presbiopía , Humanos , Presbiopía/cirugía , EnvejecimientoRESUMEN
OBJECTIVE: To investigate the protective effect of dexmedetomidine (DEX) against erastin-induced ferroptosis in human renal tubular epithelial cells (HK-2 cells) and explore the underlying mechanism. METHODS: HK-2 cells were treated with erastin alone or in combination with different concentrations (2.5, 5.0 and 10 µmol/L) of DEX, and the changes in cell viability were observed using CCK-8 assay. To explore the mechanism by which DEX inhibits erastin-induced ferroptosis, HK-2 cells were treated with erastin, erastin+10 µmol/L DEX, or erastin+10 µmol/L DEX+ML385 (a Nrf2 inhibitor), after which the cell viability was assessed. The level of intracellular Fe2+ was detected by cell ferrous iron colorimetric assay kit, and flow cytometry was performed to detect reactive oxygen species (ROS); MDA and reduced glutathione assay kits were used to detect the contents of MDA and GSH in the cells; The expressions of Nrf2, HO-1 and GPX4 proteins were detected by Western blotting. RESULTS: Erastin treatment significantly inhibited the viability of the cells, decreased GSH content, and increased intracellular levels of Fe2+, ROS and MDA. The combined treatment with 10 µmol/L DEX markedly increased the viability of the cells, increased GSH content, reduced the levels of Fe2+, ROS and MDA, and upregulated the protein expressions of Nrf2, HO-1 and GPX4 in the cells. The application of ML385 obviously blocked the protective effect of DEX and caused significant inhibition of the Nrf2/HO-1/GPX4 pathway, decreased the cell viability and GSH content, and increased the levels of Fe2+, ROS and MDA in HK-2 cells. CONCLUSION: The protective effect of DEX against erastin-induced ferroptosis of HK-2 cells is probably mediated by activation of the Nrf2/HO-1/GPX4 pathway to inhibit oxidative stress.
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Supervivencia Celular , Dexmedetomidina , Células Epiteliales , Ferroptosis , Hemo-Oxigenasa 1 , Túbulos Renales , Factor 2 Relacionado con NF-E2 , Fosfolípido Hidroperóxido Glutatión Peroxidasa , Especies Reactivas de Oxígeno , Humanos , Ferroptosis/efectos de los fármacos , Factor 2 Relacionado con NF-E2/metabolismo , Dexmedetomidina/farmacología , Células Epiteliales/metabolismo , Células Epiteliales/efectos de los fármacos , Túbulos Renales/citología , Túbulos Renales/metabolismo , Fosfolípido Hidroperóxido Glutatión Peroxidasa/metabolismo , Especies Reactivas de Oxígeno/metabolismo , Línea Celular , Supervivencia Celular/efectos de los fármacos , Hemo-Oxigenasa 1/metabolismo , Transducción de Señal/efectos de los fármacos , Piperazinas/farmacologíaRESUMEN
Tooth extraction is a common and widely employed therapeutic procedure in oral and maxillofacial surgery. Minimally invasive tooth extraction can reduce both physical and psychological trauma to the patients, and is widely recommended as a first-line clinical treatment. But currently no guidelines or consensus has been available to provide a systematic introduction of minimally invasive tooth extraction to guide the clinical practices. To address this issue, this consensus, based on a comprehensive literature review and clinical experiences of experts, systematically summarizes the indications, target patients, and contraindications of minimally invasive tooth extraction, the overall workflow of this procedure (preoperative preparation, surgical steps, postoperative management, postoperative instructions, medications, and follow-up), and its common postoperative complications to provide a comprehensive guidance for clinical application of this technique.
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Consenso , Procedimientos Quirúrgicos Mínimamente Invasivos , Extracción Dental , Humanos , Extracción Dental/métodos , Procedimientos Quirúrgicos Mínimamente Invasivos/métodos , Complicaciones Posoperatorias/prevención & controlRESUMEN
Objective: To evaluate the long-term outcomes and prognostic factors of locally advanced gastric cancer with serosa-invasion. Methods: This study is a retrospective cohort study. The clinical and pathological data of 495 patients with locally advanced gastric cancer with serosa-invasion who underwent laparoscopic radical gastrectomy in Department of General Surgery, the First Hospital Affiliated to Army Medical University from October 2012 to October 2018 was analyzed retrospectively. There were 356 males and 139 females with an age (M(IQR)) of 59 (16) years (range: 18 to 75 years). Observation indicators included postoperative results and long-term prognosis. The survival curve was drawn by the Kaplan-Meier method. Univariate and multivariate prognostic analysis was performed using the Cox proportional hazards model. Results: Among the 495 patients, a total of 57 patients (11.5%) were lost to follow-up, with a follow-up time of 89 (40) months (range: 23 to 134 months). The 5-year disease-free survival rate (DFS) and the 5-year overall survival rate (OS) were 56.0% and 58.2%, respectively. The 5-year DFS for patients with stage â ¡B, â ¢A, â ¢B, â ¢C were 71.2%, 60.5%, 51.6%, 33.3%, respectively. The 5-year OS for patients with stage â ¡B, â ¢A, â ¢B, â ¢C were 71.2%, 62.2%, 54.1%, 39.3%, respectively. Multivariate analysis showed that age >65 years (DFS: HR=1.402, 95%CI: 1.022 to 1.922, P=0.036; OS: HR=1.461, 95%CI: 1.057 to 2.019, P=0.022), lymph node dissection number less than 25 (DFS: HR=1.348, 95%CI: 1.019 to 1.779, P=0.036; OS: HR=1.376, 95%CI: 1.035 to 1.825, P=0.028), pathological stage â ¢ (DFS: HR=2.131, 95%CI: 1.444 to 3.144, P<0.01; OS: HR=2.079, 95%CI: 1.406 to 3.074, P<0.01), and no postoperative chemotherapy (DFS: HR=3.127, 95%CI: 2.377 to 4.113, P<0.01; OS: HR=3.768, 95%CI: 2.828 to 5.020, P<0.01) were independent prognostic factors for the decrease in DFS and OS rates. Conclusions: Laparoscopic radical gastrectomy for locally advanced gastric cancer with serosa-invasion could achieve satisfactory long-term oncological outcomes. More lymph node dissection and standardized postoperative adjuvant chemotherapy are expected to further improve the prognosis of patients with locally advanced gastric cancer with serous invasion after laparoscopic radical surgery.
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Gastrectomía , Laparoscopía , Neoplasias Gástricas , Humanos , Neoplasias Gástricas/cirugía , Neoplasias Gástricas/patología , Gastrectomía/métodos , Masculino , Femenino , Persona de Mediana Edad , Laparoscopía/métodos , Estudios Retrospectivos , Anciano , Adulto , Pronóstico , Tasa de Supervivencia , Resultado del Tratamiento , Adolescente , Supervivencia sin Enfermedad , Adulto Joven , Modelos de Riesgos Proporcionales , Invasividad NeoplásicaRESUMEN
Demand for accurate estimation of coastal blue carbon sequestration rates in a regular interval has recently surged due to the increasing awareness of nature-based climate solutions to alleviate adverse impacts stemming from the recent global warming. The robust estimation method is, however, far from well-established. The international community requires, moreover, to quantify its effect of "management." This article tries to provide the environmental isotope community with basic biophysical features of coastal blue carbon ecosystems to identify a suitable set of environmental isotopes for promoting coastal ocean-based climate solutions. This article reviews (i) the primary biophysical characteristics of coastal blue carbon ecosystems and hydrology, (ii) their consequential impact on the accumulation and preservation of organic carbon (OC) in the sediment column, (iii) suitable environmental isotopes to quantifying the sedimentary organic carbon accumulation, outwelling of the carbon-containing byproducts of decomposition of biogenic organic matter and acid neutralizing alkalinity produced in situ sediment to the offshore. Above-ground biomass is not cumulative over the years except for mangrove forests within coastal blue carbon systems. Non-gaseous carbon sequestration and loss occur mainly as a form of sediment organic carbon (SOC) and dissolved carbon in an intertidal and subtidal bottom sediment body in a slow, patchy, and dispersive way, on which this article focuses. Investigating environmental radionuclides is probably the most cost-effective effort to contribute to defining the offshore spatial extent of coastal blue carbon systems except for seagrass beds (e.g., Ra isotopes), to quantify millimeter per year scale carbon accretion and loss within the systems (e.g., 7Be, 210Pb) and a liter per meter of coastline per a day scale water movement from the systems (Ra isotopes). A millimeter-scale spatial and an annual (or less) time-scale resolution offered by the use of environmental isotopes would equip us with a novel tool to enhance the carbon storage capacity of the coastal blue carbon system.
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Secuestro de Carbono , Humedales , Monitoreo del Ambiente/métodos , Carbono , Ecosistema , Sedimentos Geológicos/químicaRESUMEN
Hemorrhagic pleural effusion (PE) is common in clinical practice. According to the guidelines, the etiological diagnosis of PE should focus on the identification of common diseases. In most cases, the etiology of PE can be determined by clinical history, physical examination, laboratory and imaging examinations, and pleural biopsy or video-assisted thoracic surgery (VAST). We reported a rare case of a 32-year-old woman with recurrent unilateral hemorrhagic pleural effusion (highly correlated with menstrual cycle) and chest pain that was diagnosed as thoracic endometriosis syndrome (TES) by pathological biopsy and immunohistochemistry. Later she underwent surgery combined with hormone therapy. During the follow-up, the right PE decreased, and she had no chest pain. Therefore, women of reproductive age with regular unilateral bloody pleural effusions should be alert to TES.
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Endometriosis , Derrame Pleural , Humanos , Femenino , Adulto , Endometriosis/complicaciones , Endometriosis/diagnóstico , Derrame Pleural/etiología , Derrame Pleural/diagnóstico , Recurrencia , Hemorragia/etiología , Hemorragia/diagnósticoRESUMEN
A 52-year-old woman was admitted with a primary complaint of abdominal distension and increased abdominal circumference for more than half a year. There was no evidence of infection or solid tumor on abdominocentesis or laparoscopic surgery. Concurrently, smoldering multiple myeloma was diagnosed. Due to refractory ascites and portal hypertension, a transjugular intrahepatic portosystemic shunt was performed, but the efficacy was not satisfactory. As the anemia progressed, she was finally diagnosed with active multiple myeloma after monoclonal plasma cells were detected in the ascites by flow cytometry. Treated with a triplet regimen that included bortezomib, cyclophosphamide, and dexamethasone (BCD), she achieved a very good partial response and ascites regressed.
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Ascitis , Mieloma Múltiple , Humanos , Femenino , Persona de Mediana Edad , Ascitis/etiología , Mieloma Múltiple/complicaciones , Dexametasona/uso terapéutico , Dexametasona/administración & dosificación , Ciclofosfamida/uso terapéutico , Bortezomib/uso terapéutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Anticuerpos Monoclonales/uso terapéutico , Hipertensión PortalRESUMEN
OBJECTIVES: To investigate the influence of filler type/loading on the micro-tensile fracture strength (µTFS) of adhesive resins, as measured 'immediately' upon preparation and after 1-week water storage ('water-stored'). METHODS: The morphology and particle-size distribution of three filler particles, referred to as 'Glass-S' (Esschem Europe), 'BioUnion' (GC), and 'CPC_Mont', were correlatively characterized by SEM, TEM, and particle-size analysis. These filler particles were incorporated into an unfilled adhesive resin ('BZF-29unfilled', GC) in different concentrations to measure the 'immediate' µTFS. After 1-week water storage, the 'water-stored' µTFS of the experimental particle-filled adhesive resins with the most optimum filler loading, specific for each filler type, was measured. In addition, the immediate and water-stored µTFS of the adhesive resins of three experimental two-step universal adhesives based on the same resin matrix but varying for filler type/loading, coded as 'BZF-21' (containing silica and bioglass), 'BZF-29' (containing solely silica), and 'BZF-29_hv' (highly viscous with a higher silica loading than BZF-29), and of the adhesive resins of the gold-standard adhesives OptiBond FL ('Opti-FL', Kerr) and Clearfil SE Bond 2 ('C-SE2', Kuraray Noritake) was measured along with that of BZF-29unfilled (GC) serving as control/reference. Statistics involved one-way and two-way ANOVA followed by post-hoc multiple comparisons (α<0.05). RESULTS: Glass-S, BioUnion, and CPC_Mont represent irregular fillers with an average particle size of 8.5-9.9 µm. Adding filler to BZF-29unfilled decreased µTFS regardless of filler type/loading. One-week water storage reduced µTFS of all adhesive resins except BZF-21, with the largest reduction in µTFS recorded for BZF-29unfilled. Among the three filler types, the µTFS of the 30 wt% Glass-S and 20 wt% BioUnion filled adhesive resin was not significantly different from the µTFS of BZF-29unfilled upon water storage. CONCLUSIONS: Adding filler particles into adhesive resin did not enhance its micro-tensile fracture strength but appeared to render it less sensitive to water storage as compared to the unfilled adhesive resin investigated.
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Ensayo de Materiales , Resistencia a la Tracción , Cementos de Resina/química , Resinas Compuestas/química , Propiedades de Superficie , Tamaño de la Partícula , Análisis del Estrés Dental , Cementos Dentales/química , Humanos , Microscopía Electrónica de RastreoRESUMEN
OBJECTIVE: To investigate the role of JAK1/STAT3/KHSRP axis in mediating the regulatory effect of LINC00626 on progression of esophagogastric junction adenocarcinoma. METHODS: We collected surgical tumor and adjacent tissue specimens from 64 patients with esophagogastric junction adenocarcinoma and examined the expression levels of LINC00626 and KHSRP. qRT-PCR was used to detect the expressions of LINC00626 and KHSRP in 6 esophageal adenocarcinoma cell lines (OE-19, TE-7, Bic-1, Flo-1, SK-GT-4, and BE-3) and a normal esophageal epithelial cell line (HET-1A). OE-19 and TE-7 cell lines with stable LINC00626 knockdown and FLO-1 and SK-GT-4 cells stably overexpressing LINC00626 were constructed by lentiviral transfection, and the changes in proliferation, migration and invasion of the cells were evaluated using Cell Counting Kit-8 (CCK-8) assay and Transwell migration/invasion assay. The expressions of KHSRP and JAK/STAT pathway proteins in the transfected cells were detected with Western blotting. The effects of LINC006266 knockdown and overexpression on subcutaneous tumor formation and lung metastasis of OE-19 and FLO-1 cell xenografts were tested in nude mice. RESULTS: The expression levels of LINC00626 and KHSRP were significantly increased in esophagogastric junction adenocarcinoma tissues and in esophageal adenocarcinoma cells. LINC00626 knockdown obviously inhibited the proliferation, migration and invasion of esophageal adenocarcinoma cells in vitro and decreased their tumor formation and lung metastasis abilities in nude mice, while overexpression of LINC00626 produced the opposite effects. In esophageal adenocarcinoma cells, LINC0626 knockdown significantly decreased and LINC00626 overexpression strongly enhanced the phosphorylation of JAK1 and STAT3. CONCLUSION: High LINC00626 expression promotes esophageal-gastric junction adenocarcinoma metastasis by activating the JAK1/STAT3/KHSRP signal axis.
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Adenocarcinoma , Neoplasias Esofágicas , Janus Quinasa 1 , Neoplasias Pulmonares , Proteínas de Unión al ARN , Animales , Humanos , Ratones , Adenocarcinoma/metabolismo , Línea Celular Tumoral , Movimiento Celular , Proliferación Celular , Unión Esofagogástrica/metabolismo , Unión Esofagogástrica/patología , Regulación Neoplásica de la Expresión Génica , Quinasas Janus/metabolismo , Neoplasias Pulmonares/metabolismo , Ratones Desnudos , Transducción de Señal , Factores de Transcripción STAT/metabolismo , Factor de Transcripción STAT3/metabolismo , Transactivadores , ARN Largo no Codificante/genéticaRESUMEN
Heritage agrochemicals like myclobutanil, oxyfluorfen, and pronamide, are extensively used in agriculture, with well-established studies on their animal toxicity. Yet, human toxicity assessment relies on conventional human risk assessment approaches including the utilization of animal-based ADME (Absorption, Distribution, Metabolism, and Excretion) data. In recent years, Physiologically Based Pharmacokinetic (PBPK) modelling approaches have played an increasing role in human risk assessment of many chemicals including agrochemicals. This study addresses the absence of PBPK-type data for myclobutanil, oxyfluorfen, and pronamide by generating in vitro data for key input PBPK parameters (Caco-2 permeability, rat plasma binding, rat blood to plasma ratio, and rat liver microsomal half-life), followed by generation of PBPK models for these three chemicals via the GastroPlusTM software. Incorporating these experimental input parameters into PBPK models, the prediction accuracy of plasma AUC (area under curve) was significantly improved. Validation against rat oral administration data demonstrated substantial enhancement. Steady-state plasma concentrations (Css) of pronamide aligned well with published data using measured PBPK parameters. Following validation, parent-based tissue concentrations for these agrochemicals were predicted in humans and rats after single or 30-day repeat exposure of 10 mg/kg/day. These predicted concentrations contribute valuable information for future human toxicity risk assessments of these agrochemicals.