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1.
Artículo en Inglés | MEDLINE | ID: mdl-39015948

RESUMEN

BACKGROUND: Despite extensive research on muscle loss in people living with HIV (PLWH), the prevalence and contributing factors specifically among middle-aged men remain unclear. This study aimed to determine the prevalence of low muscle mass within this demographic and to identify associated factors. METHODS: A total of 378 men living with HIV were enrolled in the study. They were classified into low muscle mass group if they displayed a skeletal muscle index (SMI) <7.00 kg/m2 or fell within the lowest quintile of SMI based on the criteria established by the Asian Working Group for Sarcopenia 2019. RESULTS: Out of the 378 men living with HIV enrolled, 351 had normal muscle mass, while 27 (7.1%) had low muscle mass. Antiretroviral drugs Zidovudine (AZT) (OR = 0.246, P = 0.022) and higher serum albumin levels (OR = 0.899, P = 0.026) were found to be protective factors against low muscle mass according to quintile grouping. Strong positive associations between SMI and body mass index (BMI), nutritional risk index (NRI), oedema index and fat-free mass index (FFMI) (R > 0.5, P < 0.001) were observed. In addition, both BMI (sensitivity = 0.741, specificity = 0.906) and NRI (sensitivity = 0.963, specificity = 0.601) had high sensitivity and specificity in diagnosing low muscle mass, with critical values of 19.85 and 114.177 for BMI and NRI, respectively. The oedema index was the most effective measure of body composition in detecting abnormal fluid retention with high sensitivity (92.6%) and moderate specificity (71.8%) in identifying individuals with low muscle mass. Notably, PLWH with low muscle mass participants had a significantly higher prevalence (92.6%) of a high oedema index compared with those with normal muscle mass (28.2%). This observation indicates that individuals with HIV who experience reduced muscle mass is commonly accompanied with abnormal fluid retention within the body. CONCLUSIONS: Antiretroviral medication types, specifically Zidovudine, BMI and NRI can be independent risk factors for low muscle mass in men with HIV. These factors, along with BMI, could be used conveniently to predict low muscle mass. Furthermore, the association between the oedema index and muscle mass suggests that observing signs of oedema may indicate a risk of low muscle mass in PLWH.

2.
J Thorac Dis ; 16(5): 2948-2962, 2024 May 31.
Artículo en Inglés | MEDLINE | ID: mdl-38883642

RESUMEN

Background: Esophageal cancer remains a significant burden of lethal cancers worldwide, particularly in China. This is an annual report of Shanghai Chest Hospital (SCH) on surgical treatment for esophageal cancer patients in 2017. Methods: All patients who received surgical treatment for esophageal cancer at SCH in 2017 were given a detailed summary of clinical information based on the database of SCH. Kaplan-Meier method was used to present their survival, subgroup analyses, and multivariate Cox regression analysis were used to estimate the potential risk factors for prognosis. Results: In 2017, a total of 663 patients received surgical treatment (628 esophagectomies and 35 endoscopic resections) for esophageal cancer at SCH. Of the patients who underwent esophagectomy, 292 patients received perioperative treatment, majority of which was postoperative treatment (47.9%). Only 69 (10.4%) patients received preoperative treatment. Minimally invasive techniques were used in 444 (70.7%) patients and robotic-assisted esophagectomies were used in 130 (20.7%) patients. Complete resection (R0) was achieved in 90.3% of esophagectomy patients. The 5-year overall survival (OS) rate after esophagectomy was 52.5%. Conclusions: The 5-year OS of patients with esophageal cancer can reach 52.5% after surgical treatment in 2017 at SCH. The exact beneficiaries of neoadjuvant therapy are still unclear in the 2017 cohort.

3.
Talanta ; 274: 125989, 2024 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-38537357

RESUMEN

Rapid and sensitive determination of pesticide residues in fruits and vegetables is critical for human health and ecosystems. This paper used an Ag-modified CuO sphere-cavity array (CuO@Ag) electrode as a thiram SERS/electrochemical dual readout detection platform. Numerous Raman "hotspots" generated by uniformly distributed silver nanoparticles, charge transfer at the CuO@Ag interface, and the formation of Ag-thiram complexes contribute to the significant enhancement of this SERS substrate, which results in excellent SERS performance with an enhancement factor up to 1.42 × 106. When using SERS as the readout technique, the linear range of the substrate for thiram detection was 0.05-20 nM with a detection limit (LOD) of up to 0.0067 nM. Meanwhile, a correlation between the value of change in current density and thiram concentration was established due to the formation of stable complexes of thiram with Cu2+ generated at specific potentials. The linear range of electrochemical detection was 0.05-20.0 µM, and the detection limit was 0.0167 µM. The newly devised dual-readout sensor offers notable sensitivity and stability. The two signal readout methods complement each other in terms of linear range and detection limit, making it a convenient tool for assessing thiram residue levels in agro-food. At the same time, the combination of commercially available portable equipment makes on-site monitoring possible.


Asunto(s)
Cobre , Técnicas Electroquímicas , Plata , Espectrometría Raman , Tiram , Tiram/análisis , Cobre/química , Cobre/análisis , Plata/química , Espectrometría Raman/métodos , Técnicas Electroquímicas/métodos , Límite de Detección , Nanopartículas del Metal/química , Electrodos , Residuos de Plaguicidas/análisis
4.
J Inflamm Res ; 16: 3185-3196, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37529768

RESUMEN

Background: Malignant ventricular arrhythmia (MVA) can seriously affect the hemodynamic changes of the body. In this study, we developed and validated a nomogram to predict the in-hospital MVA risk in patients with STEMI after emergency PCI. Methods: The multivariable logistic regression analysis included variables with a P<0.05 in the univariate logistic regression analysis and investigated the independent predictors affecting in-hospital MVA after PCI in patients with STEMI in the training cohort. The construction of a nomogram model used independent predictors to predict the risk of in-hospital MVA, and C-index, Hosmer-Lemeshow (HL) test, calibration curves, decision curve analysis (DCA), and receiver operating characteristic (ROC) were used to validate the nomogram. Results: Killip class [OR=5.034 (95% CI: 1.596-15.809), P=0.005], CK-MB [OR=1.002 (95% CI: 1.001-1.004), P=0.022], serum potassium [OR=0.618 (95% CI: 0.406-0.918), P=0.020], NLR [OR=1.073 (95% CI: 1.034-1.115), P<0.001], and monocyte [OR=1.974 (95% CI: 1.376-2.925), P<0.001] were the independent predictors of in-hospital MVA after PCI in patients with STEMI. A nomogram including the 5 independent predictors was developed to predict the risk of in-hospital MVA. The C-index, equivalent to the area under the ROC curve (AUC), was 0.803 (95% confidence interval [CI]: 0.738-0.868) in the training cohort, and 0.801 (95% CI:0.692-0.911) in the validation cohort, showing that the nomogram had a good discrimination. The HL test (χ2=8.439, P=0.392 in the training cohort; χ2=9.730, P=0.285 in the validation cohort) revealed a good calibration. The DCA suggested an obvious clinical net benefit. Conclusion: Killip class, CK-MB, serum potassium, NLR, and monocyte were independent factors for in-hospital MVA after PCI in patients with STEMI. The nomogram model constructed based on the above factors to predict the risk of in-hospital MVA had satisfactory discrimination, calibration, and clinical effectiveness, and was an excellent tool for early prediction of the risk of in-hospital MVA after PCI in patients with STEMI.

5.
Mol Carcinog ; 62(11): 1673-1685, 2023 11.
Artículo en Inglés | MEDLINE | ID: mdl-37477518

RESUMEN

Gastric cancer is one of the deadliest malignant tumors, and half of the patients develop recurrences or metastasis within 5 years after eradication therapy. Cancer stem cells (CSCs) are considered to be important in this progress. The sonic hedgehog (SHH) pathway plays an important role in the maintenance of gastric CSCs characteristics. The p63 proteins are vital transcription factors belonging to the p53 family, while their functions in regulating CSCs remain unclear. The preventive effects of dietary diallyl trisulfide (DATS) against human gastric cancer have been verified. However, whether DATS can target gastric CSCs are poorly understood. Here, we investigated the role of ΔNp63/SHH pathway in gastric CSCs and the inhibitory effect of DATS on gastric CSCs via ΔNp63/SHH pathway. We found that ΔNp63 was upregulated in serum-free medium cultured gastric tumorspheres compared with the parental cells. Overexpression of ΔNp63 elevated the self-renewal capacity and CSC markers' levels in gastric sphere-forming cells. Furthermore, we found that ΔNp63 directly bound to the promoter region of Gli1, the key transcriptional factor of SHH pathway, to enhance its expression and to activate SHH pathway. In addition, it was revealed that DATS effectively inhibited gastric CSC properties both in vitro and in vivo settings. Activation of SHH pathway attenuated the suppressive effects of DATS on the stemness of gastric cancer. Moreover, DATS suppression of gastric CSC properties was also diminished by ΔNp63 upregulation through SHH pathway activation. These findings illustrated the role of ΔNp63/SHH pathway in DATS inhibition of gastric cancer stemness. Taken together, the present study suggested for the first time that DATS inhibited gastric CSCs properties by ΔNp63/SHH pathway.


Asunto(s)
Proteínas Hedgehog , Neoplasias Gástricas , Humanos , Proteínas Hedgehog/metabolismo , Proteínas Hedgehog/farmacología , Neoplasias Gástricas/patología , Transducción de Señal , Factores de Transcripción/metabolismo , Células Madre Neoplásicas/patología , Línea Celular Tumoral
7.
Front Public Health ; 11: 1152321, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37050955

RESUMEN

Introduction: Excessive screen exposure (ESE) is a growing global public health concern. This study aims to investigate the potential association between ESE and suspected developmental coordination disorder (DCD) in Chinese pre-schoolers, with or without siblings. Method: A retrospective cohort study was conducted, involving 126,433 children from 551 cities in China. The Little Developmental Coordination Disorder Questionnaire (LDCDQ) was employed to evaluate motor impairment in children, while parents provided information on their children's screen time in the past year. A mixed and multi-level logistic regression model was used to analyze the associations of all screen exposure measurements from the past year with LDCDQ scores and the risk of suspected DCD. Results: The prevalence of excessive screen exposure was 67.6% (>1 h per day) and 28.9% (>2 h per day) in Chinese pre-schoolers. One hour's increase in weekday daily screen time, weekend daily screen time, and screen time before sleep in the past year was associated with a decreased total score of the LDCDQ (ß were -0.690, -0.398, and -1.587, p < 0.001) and an increased risk of suspected DCD by 15.3%, 9.1%, and 46.8% when adjusting for the child, family and maternal health characteristics. Excessive screen exposure decreased the total LDCDQ scores by 1.335 (>1 vs. ≤1 h) and 1.162 (>2 vs. ≤2 h) and increased risks of suspected DCD by 44.0% (>1 vs. ≤1 h) and 31.1% (>2 vs. ≤2 h) with statistical significance (each p < 0.05). The stratified analysis showed that the association between screen time and LDCDQ score was stronger in children without siblings than in those with siblings. Conclusion: The risk of suspected DCD was highest for screen time exposure before bed compared with average weekday and weekend exposures. Parents should be advised to prevent their children from using electronic screens unsupervised, especially in one-child families.


Asunto(s)
Trastornos de la Destreza Motora , Humanos , Trastornos de la Destreza Motora/epidemiología , Tiempo de Pantalla , Estudios Retrospectivos , Padres , Análisis Multivariante
9.
Ecotoxicol Environ Saf ; 252: 114605, 2023 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-36753971

RESUMEN

BACKGROUND: The omnipresence of human phthalate (PAE) exposure is linked to various adverse health issues, including breast cancer. However, the effects of low-dose PAE exposure on breast cancer stem cells (BCSCs) and the underlying mechanism remain unexplored. METHODS: BCSCs from breast cancer cell lines (MDA-MB-231 and MCF-7) were enriched using a tumorsphere formation assay. Gene and protein expression was detected by measurement of quantitative real-time reverse transcription PCR, western blot, and immunofluorescence assays. Transient transfection assays were used to evaluate the involvement of Gli1, a signaling pathway molecule and ΔNp63α, an oncogene in influencing the PAE-induced characteristics of BCSCs. RESULTS: PAE (butylbenzyl phthalate, BBP; di-butyl phthalate, DBP; di-2-ethylhexyl phthalate, DEHP) exposure of 10-9 M significantly promoted the tumorsphere formation ability in BCSCs. Breast cancer spheroids with a 10-9 M PAE exposure had higher levels of BCSC marker mRNA and protein expression, activated sonic hedgehog (SHH) pathway, and increased mRNA and protein levels of an oncogene, ΔNp63α. Furthermore, suppression of the SHH pathway attenuated the effects of PAEs on BCSCs. And the overexpression of ΔNp63α enhanced PAE-induced characteristics of BCSCs, while low expression of ΔNp63α inhibited the promotion effects of PAEs on BCSCs and the SHH pathway. CONCLUSION: Low-dose PAE exposure promoted the stem cell properties of BCSCs in a ΔNp63α- and SHH-dependent manner. The influence of low-dose exposure of PAEs and its relevance for the lowest observed effect concentrations requires further investigation, and the precise underlying mechanism needs to be further explored.


Asunto(s)
Neoplasias de la Mama , Proteínas Hedgehog , Humanos , Femenino , Proteínas Hedgehog/genética , Proteínas Hedgehog/metabolismo , Neoplasias de la Mama/genética , Neoplasias de la Mama/metabolismo , Transducción de Señal , Oncogenes , Células Madre Neoplásicas/metabolismo , Línea Celular Tumoral
10.
Sci Rep ; 13(1): 1147, 2023 01 20.
Artículo en Inglés | MEDLINE | ID: mdl-36670177

RESUMEN

The aim of the present study was to investigate the role of endoplasmic reticulum (ER) stress in bisphenol A (BPA) - induced hepatic lipid accumulation as well as the protective effects of Sulforaphane (SFN) in this process. Human hepatocyte cell line (LO2) and C57/BL6J mice were used to examine BPA-triggered hepatic lipid accumulation and the underlying mechanism. Hepatic lipid accumulation, triglycerides (TGs) levels, the expression levels of lipogenesis-related genes and proteins in the ER stress pathway were measured. It was revealed that BPA treatment increased the number of lipid droplets, the levels of TG and mRNAs expression of lipogenesis-related genes, and activated the ER stress pathway. These changes were inhibited by an ER stress inhibitor 4-phenylbutyric acid. SFN treatment abrogated BPA-altered hepatic lipid metabolism and ameliorated BPA-induced ER stress-related markers. Together, these findings suggested that BPA activated ER stress to promote hepatic lipid accumulation, and that SFN reversed those BPA effects by alleviating ER stress.


Asunto(s)
Hígado , Enfermedad del Hígado Graso no Alcohólico , Humanos , Animales , Ratones , Hígado/metabolismo , Metabolismo de los Lípidos , Estrés del Retículo Endoplásmico , Enfermedad del Hígado Graso no Alcohólico/metabolismo , Lípidos/farmacología
11.
J Nutr Biochem ; 112: 109226, 2023 02.
Artículo en Inglés | MEDLINE | ID: mdl-36435292

RESUMEN

The PD-1/PD-L1 immune checkpoint blockade therapy has shown revolutionary efficacy in the treatment of multiple cancers including gastric cancer. Isothiocyanates play important roles in cancer cell suppression and immunomodulation. However, the effects of isothiocyanates on immune checkpoint inhibitors are poorly understood in gastric cancer. The influence of three major isothiocyanates (sulforaphane, phenylethyl isothiocyanate, and benzhydryl isothiocyanate) on gastric cancer cell growth and PD-L1 expression was investigated. Syngeneic mouse models were administered by isothiocyanates and anti-PD-L1 monoclonal antibody, and the anti-tumor effects were assessed. The expression of PD-L1, proportion of lymphocytes and serum cytokine levels were detected to explore the underlying mechanisms. We found that PD-L1 expression was significantly induced by isothiocyanates which was associated with TAp63α up-regulation. We further revealed that TAp63α promoted PD-L1 through transcriptional activation. Combination treatment of isothiocyanates and anti-PD-L1 therapy weakened the sensitivity of gastric cancer cells to anti-PD-L1 drug. Moreover, in vivo studies illustrated that the interference effects of isothiocyanates on anti-PD-L1 antibody were related to PD-L1 expression and decreased infiltrating T lymphocytes in tumor bearing mouse hosts. Our findings provide novel insights as isothiocyanates could interfere with the successful application of immunotherapy in gastric cancer.


Asunto(s)
Neoplasias Gástricas , Ratones , Animales , Neoplasias Gástricas/tratamiento farmacológico , Inmunoterapia , Anticuerpos Monoclonales/farmacología , Anticuerpos Monoclonales/uso terapéutico , Inmunomodulación , Isotiocianatos/farmacología , Isotiocianatos/uso terapéutico , Línea Celular Tumoral
12.
Biomaterials ; 292: 121929, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-36455487

RESUMEN

The endoplasmic reticulum's (ER) dynamic nature, essential for maintaining cellular homeostasis, can be influenced by stress-induced damage, which can be assessed by examining the morphology of ER dynamics and, more locally, ER properties such as hydrophobicity, viscosity, and polarity. Although numerous ER-specific chemical probes have been developed to monitor the ER's physical and chemical parameters, the quantitative detection and super-resolution imaging of its local hydrophobicity have yet to be explored. Here, we describe a photostable ER-targeted probe with high signal-to-noise ratio for super-resolution imaging that can specifically respond to changes in ER hydrophobicity under stress based on a "reserve-release" mechanism. The probe shows an excellent ability to target ER over commercial ER dyes and can be used to track local changes of hydrophobicity by fluorescence intensity and morphology during the selective autophagy of ER (i.e., reticulophagy). By correlating the level and location of ER damage with the distribution of fluorescence intensity, we were able to assess reticulophagy at the subcellular level. Beyond that, we developed a topological analytical tool adaptable to any ER probe for detecting structural changes in ER and thus quantitatively identifying reticulophagy. The algorithm-assisted tool can also be adapted to a wide range of molecular probes and organelles. Altogether, the new probe and analytical strategy described here show promise for the quantitative detection and analysis of subtle ER damage and stress.


Asunto(s)
Autofagia , Retículo Endoplásmico , Estrés del Retículo Endoplásmico
13.
World J Pediatr ; 19(3): 261-272, 2023 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-36469242

RESUMEN

BACKGROUND: This study analyzed the motor development and suspected developmental coordination disorder of very and moderately preterm (< 34+0 gestational age), late preterm (34+0-36+6 gestational week), and early-term (37+0-38+6 gestational week) children compared to their full-term peers with a national population-based sample in China. METHODS: A total of 1673 children (799 girls, 874 boys) aged 3-10 years old were individually assessed with the Movement Assessment Battery for Children-second edition (MABC-2). The association between gestational age and motor performance of children was analyzed using a multilevel regression model. RESULTS: The global motor performance [ß = - 5.111, 95% confidence interval (CI) = - 9.200 to - 1.022; P = 0.015] and balance (ß = - 5.182, 95% CI = - 5.055 to - 1.158; P = 0.003) for very and moderately preterm children aged 3-6 years old were significantly lower than their full-term peers when adjusting for confounders. Late preterm and early-term children showed no difference. Moreover, very and moderately preterm children aged 3-6 years had a higher risk of suspected developmental coordination disorder (DCD) (≤ 5 percentile of MABC-2 score) when adjusting for potential confounders [odds ratio (OR) = 2.931, 95% CI = 1.067-8.054; P = 0.038]. Late preterm and early-term children showed no difference in motor performance from their full-term peers (each P > 0.05). CONCLUSIONS: Our findings have important implications for understanding motor impairment in children born at different gestational ages. Very and moderately preterm preschoolers have an increased risk of DCD, and long-term follow-up should be provided for early detection and intervention.


Asunto(s)
Trastornos de la Destreza Motora , Recién Nacido , Masculino , Femenino , Humanos , Niño , Preescolar , Trastornos de la Destreza Motora/diagnóstico , Trastornos de la Destreza Motora/epidemiología , Estudios Retrospectivos , Nacimiento a Término , Edad Gestacional , Oportunidad Relativa
14.
Anal Chem ; 94(51): 17904-17912, 2022 12 27.
Artículo en Inglés | MEDLINE | ID: mdl-36480812

RESUMEN

Ferroptosis is of great importance in physiological and pathological processes, which is associated with various inflammation-related diseases, cardiovascular diseases, and even cancer. Ferroptosis can cause abnormal change of reactive oxygen species (ROS) in mitochondria. Hypochlorous acid (HClO) acts as a typical ROS. Therefore, it is needed to study the relationship between mitochondrial morphology and HClO changes during ferroptosis at the subcellular level. To this end, a near-infrared-excitation/emission fluorescent probe, HD-Br-1, for rapid detection of mitochondrial HClO was developed based on the specific oxidative cleavage of the N,N-dimethylthiocarbamate moiety. The fluctuation in mitochondrial HClO content and the change in mitochondrial morphology during ferroptosis were monitored in real time by super-resolution imaging. In addition, HD-Br-1 was successfully applied to monitor exogenous and endogenous mitochondrial HClO during cell ferroptosis and visualize tumor to discriminate from healthy tissues. Therefore, we believe that HD-Br-1 could provide a valuable approach for the detection of mitochondrial HClO in cancer cells as well as for understanding the ferroptosis mechanism and early diagnosis of cancers associated with ferroptosis for future research.


Asunto(s)
Ferroptosis , Colorantes Fluorescentes , Microscopía Fluorescente/métodos , Ácido Hipocloroso , Mitocondrias
15.
Bioorg Chem ; 128: 106034, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-35908353

RESUMEN

Liver disease has become a major cause of premature mortality worldwide. It is well known that dysregulated inflammation response plays a crucial role in most liver diseases. As a Chinese medicinal herb, Magnesium isoglycyrrhizinate (MgIG) has been proven to have good hepatoprotective activity and has been used in clinic to treat liver disease. However, the mechanisms by which MgIG regulates LPS-induced liver injury and inflammation in vivo remain elusive. In our study, MgIG pretreatment mitigated LPS-induced liver damage by suppressing apoptosis and inflammation via regulating macrophage/neutrophil infiltration. MgIG ameliorated the effects of LPS on pro-oxidant enzymes (NOX1/2/4) and anti-oxidant enzymes (SOD1/2). Interestingly, we found that the level of the hepatoprotective cytokine interleukin (IL)-22 was significantly upregulated in MgIG-treated liver tissues, which might be a potential mechanism of MgIG against liver injury. Moreover, we found that MgIG treatment not only inhibited TLR4/MyD88/NF-κB signaling pathway, but also activated autophagy. Furthermore, IL-22 treatment activated autophagy and inhibited TLR4/NF-κB signaling pathway in vitro, suggesting that IL-22-activated autophagy and -inhibited inflammation also participated in the protective effects of MgIG. Altogether, our results uncovered the potential mechanisms of the hepatoprotective effects of MgIG, which provided critical evidence to support the use of MgIG to prevent and treat liver diseases.


Asunto(s)
Enfermedad Hepática Crónica Inducida por Sustancias y Drogas , Saponinas , Triterpenos , Animales , Autofagia , Enfermedad Hepática Crónica Inducida por Sustancias y Drogas/metabolismo , Humanos , Inflamación/inducido químicamente , Inflamación/tratamiento farmacológico , Inflamación/metabolismo , Interleucinas/metabolismo , Interleucinas/farmacología , Lipopolisacáridos/metabolismo , Lipopolisacáridos/farmacología , Hígado , Ratones , FN-kappa B/metabolismo , Saponinas/metabolismo , Saponinas/farmacología , Saponinas/uso terapéutico , Receptor Toll-Like 4/metabolismo , Triterpenos/metabolismo , Triterpenos/farmacología , Interleucina-22
16.
Front Pharmacol ; 13: 927609, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35734408

RESUMEN

The endoplasmic reticulum (ER) is the main storage site of Zn2+, and Zn2+ plays an important role in regulating ER homeostasis. Therefore, we designed and synthesized a ratiometric fluorescent Zn2+ probe ER-Zn targeting ER stress. The probe displayed a specific Zn2+ induced blue shift at the spectral maximum values of excitation (80 nm) and emission (30 nm). The ratio imaging capability of Zn2+ under dual excitation mode can be applied not only to quantitative and reversible detection of exogenous Zn2+, but also the observation of the Zn2+ level change under ER stress, elucidating the different behaviors of Zn2+ release in ER stimulated by tunicamycin and thapsigargin. Additionally, the NIR imaging capability of ER-Zn provides an important basis for further research on animal models and is expected to realize the visualization and treatment of ER stress-related diseases through the regulation of ER stress by Zn2+. We envision that this probe can be applied to screen drugs for diseases related to ER stress regulation.

17.
J Nutr Biochem ; 107: 109067, 2022 09.
Artículo en Inglés | MEDLINE | ID: mdl-35609851

RESUMEN

Cancer stem cells (CSCs) play a key role in cancer initiation, development, metastasis, and recurrence. Previously, we found that sulforaphane (SFN), a natural compound obtained from cruciferous vegetables, inhibited colorectal CSCs via the downregulation of TAp63α. However, the role of ΔNp63α, another critical isoform of p63 which has been considered to contribute to cancer progression, in SFN-mediated colorectal CSCs inhibition remains unclear. Here, we showed that ΔNp63α expression was enhanced in sphere-forming colorectal cancer cells. Overexpression of ΔNp63α promoted the properties of CSCs, while downregulation of ΔNp63α suppressed those properties. Besides, ΔNp63α was found to activate the transcription of core CSCs genes including Nanog, Oct4, and Sox2. Furthermore, in vitro and in vivo experiments illustrated the regulatory effects of SFN on ΔNp63α and colorectal CSCs. These findings suggested for the first time that ΔNp63α activated the transcription of Nanog, Oct4, Sox2 and mediated the interventional effects of SFN on colorectal CSCs, thus providing a novel mechanism by which SFN inhibits colorectal CSCs.


Asunto(s)
Neoplasias Colorrectales , Células Madre Neoplásicas , Línea Celular Tumoral , Neoplasias Colorrectales/tratamiento farmacológico , Neoplasias Colorrectales/genética , Neoplasias Colorrectales/metabolismo , Humanos , Isotiocianatos/farmacología , Proteína Homeótica Nanog/genética , Proteína Homeótica Nanog/metabolismo , Células Madre Neoplásicas/metabolismo , Factores de Transcripción SOXB1/genética , Factores de Transcripción SOXB1/metabolismo , Factores de Transcripción SOXB1/farmacología , Sulfóxidos/farmacología
18.
J Appl Microbiol ; 133(2): 273-286, 2022 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-35294082

RESUMEN

Mandelic acid and its derivatives are an important class of chemical synthetic blocks, which is widely used in drug synthesis and stereochemistry research. In nature, mandelic acid degradation pathway has been widely identified and analysed as a representative pathway of aromatic compounds degradation. The most studied mandelic acid degradation pathway from Pseudomonas putida consists of mandelate racemase, S-mandelate dehydrogenase, benzoylformate decarboxylase, benzaldehyde dehydrogenase and downstream benzoic acid degradation pathways. Because of the ability to catalyse various reactions of aromatic substrates, pathway enzymes have been widely used in biocatalysis, kinetic resolution, chiral compounds synthesis or construction of new metabolic pathways. In this paper, the physiological significance and the existing range of the mandelic acid degradation pathway were introduced first. Then each of the enzymes in the pathway is reviewed one by one, including the researches on enzymatic properties and the applications in biotechnology as well as efforts that have been made to modify the substrate specificity or improving catalytic activity by enzyme engineering to adapt different applications. The composition of the important metabolic pathway of bacterial mandelic acid degradation pathway as well as the researches and applications of pathway enzymes is summarized in this review for the first time.


Asunto(s)
Ácidos Mandélicos , Pseudomonas putida , Biotecnología , Cinética , Ácidos Mandélicos/química , Ácidos Mandélicos/metabolismo , Oxidorreductasas/metabolismo
19.
Nutrients ; 14(4)2022 Feb 09.
Artículo en Inglés | MEDLINE | ID: mdl-35215380

RESUMEN

The health effects of diet are long term and persistent. Few cohort studies have investigated the influence of maternal dietary patterns during different gestational periods on offspring's health outcomes. This study investigated the associations between maternal dietary patterns in the mid- and late-gestation and infant's neurodevelopment at 1 year of age in the Jiangsu Birth Cohort (JBC) Study. A total of 1178 mother-child pairs were available for analysis. A semiquantitative food frequency questionnaire (FFQ) was used to investigate dietary intake at 22-26 and 30-34 gestational weeks (GWs). Neurodevelopment of children aged 1 year old was assessed using Bayley-Ⅲ Screening Test. Principal component analysis (PCA) and Poisson regression were used to extract dietary patterns and to investigate the association between dietary patterns and infant neurodevelopment. After adjusting for potential confounders, the maternal 'Aquatic products, Fresh vegetables and Homonemeae' pattern in the second trimester was associated with a lower risk of being non-competent in cognitive and gross motor development, respectively (cognition: aRR = 0.84; 95% CI 0.74-0.94; gross motor: aRR = 0.80; 95% CI 0.71-0.91), and the similar pattern, 'Aquatic products and Homonemeae', in the third trimester also showed significant association with decreased risk of failing age-appreciate cognitive and receptive communication development (cognition: aRR = 0.89; 95% CI 0.80-0.98; receptive communication: aRR = 0.91; 95% CI 0.84-0.99). Notably, adherence to the dietary pattern with relatively high aquatic and homonemeae products in both trimesters demonstrated remarkable protective effects on child neurodevelopment with the risk of being non-competent in cognitive and gross motor development decreasing by 59% (95% CI 0.21-0.79) and 63% (95% CI 0.18-0.77), respectively. Our findings suggested that adherence to the 'Aquatic products and Homonemeae' dietary pattern during pregnancy may have optimal effects on offspring's neurodevelopment.


Asunto(s)
Dieta , Verduras , Cognición , Estudios de Cohortes , Humanos , Lactante , Embarazo , Tercer Trimestre del Embarazo
20.
Cell Biol Toxicol ; 38(2): 273-289, 2022 04.
Artículo en Inglés | MEDLINE | ID: mdl-33811578

RESUMEN

Interleukin-17A (IL-17A) is an essential inflammatory cytokine in the progress of carcinogenesis. Tobacco smoke (TS) is a major risk factor of lung cancer that influences epithelial-mesenchymal transition (EMT) process. However, the potential mechanism by which IL-17A mediates the progression of lung cancer in TS-induced EMT remains elusive. In the present study, it was revealed that the IL-17A level was elevated in lung cancer tissues, especially in tumor tissues of cases with experience of smoking, and a higher IL-17A level was correlated with induction of EMT in those specimens. Moreover, the expression of ΔNp63α was increased in IL-17A-stimulated lung cancer cells. ΔNp63α functioned as a key oncogene that bound to the miR-17-92 cluster promoter and transcriptionally increased the expression of miR-19 in lung cancer cells. Overexpression of miR-19 promoted EMT in lung cancer with downregulation of E-cadherin and upregulation of N-cadherin, while its inhibition suppressed EMT. Finally, the upregulated levels of IL-17A, ΔNp63α, and miR-19 along with the alteration of EMT-associated biomarkers were found in lung tissues of TS-exposed mice. Taken together, the abovementioned results suggest that IL-17A increases ΔNp63α expression, transcriptionally elevates miR-19 expression, and promotes TS-induced EMT in lung cancer. These findings may provide a new insight for the identification of therapeutic targets for lung cancer.


Asunto(s)
Neoplasias Pulmonares , MicroARNs , Contaminación por Humo de Tabaco , Animales , Transición Epitelial-Mesenquimal/genética , Regulación Neoplásica de la Expresión Génica , Interleucina-17/genética , Interleucina-17/metabolismo , Neoplasias Pulmonares/patología , Ratones , MicroARNs/genética , MicroARNs/metabolismo , Humo , Nicotiana/metabolismo
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