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1.
BMC Womens Health ; 24(1): 324, 2024 Jun 05.
Artículo en Inglés | MEDLINE | ID: mdl-38834997

RESUMEN

BACKGROUND: Whether patients with cT1 - 2N1M0 breast cancer can benefit from postoperative radiotherapy (RT) after receiving neoadjuvant chemotherapy (NAC) has been controversial. Therefore, the purpose of this study was to explore whether postoperative RT can benefit this group of patients in terms of survival. METHODS: We used Surveillance, Epidemiology, and End Results (SEER) data to conduct a retrospective review of women with cT1 - 2N1M0 breast cancer diagnosed between 20 and 80 years of age who received NAC between 2010 and 2015. Our study compared the impact of postoperative RT on overall survival (OS) and cancer-specific survival (CSS) in breast cancer patients using propensity score matching (PSM) and performed subgroup analysis. RESULTS: This study finally included 1092 cT1 - 2N1M0 breast cancer patients. Regardless of the patient's PSM status, postoperative RT was significantly associated with OS of cT1-2N1M0 breast cancer patients who received NAC. Specifically, the 10-year OS rate was 78.7% before PSM matching, compared with 71.1% in patients who did not receive postoperative RT, and the difference was more significant after PSM matching, which was 83.1% and 71.1% respectively. However, postoperative RT did not significantly benefit CSS in patients with cT1 - 2N1M0 breast cancer who received NAC. The 10-year CSS rate was 81.4% VS 76.2% (P = 0.085) before PSM matching and 85.8% VS 76.2%(P = 0.076) after matching. Due to the intersection of OS and CSS curves, this restricted mean survival time (RMST) method was chosen as a supplement. After 60 months, the OS difference in RMST between the postoperative RT group and the non-radiotherapy (noRT) group was 7.37 months (95%CI: 0.54-14.21; P = 0.034), and the CSS difference was 5.18 months (95%CI: -1.31-11.68; P = 0.118). Subgroup analysis found that in patients with right-sided breast cancer, postoperative RT improved the patient's OS (HR = 0.45, 95%CI: 0.21-0.95, P = 0.037) and CSS (HR = 0.42, 95%CI: 0.18-0.98, P = 0.045). CONCLUSIONS: Our results showed that additional postoperative RT improved the OS of cT1 - 2N1M0 breast cancer patients who received NAC, but failed to improve their CSS. It is worth noting that in the subgroup analysis of patients with right-sided breast cancer, we observed significant improvements in OS and CSS. And further prospective studies are still needed to verify the effect of postoperative RT in different subgroups.


Asunto(s)
Neoplasias de la Mama , Terapia Neoadyuvante , Programa de VERF , Humanos , Femenino , Neoplasias de la Mama/terapia , Neoplasias de la Mama/mortalidad , Neoplasias de la Mama/radioterapia , Neoplasias de la Mama/tratamiento farmacológico , Terapia Neoadyuvante/métodos , Terapia Neoadyuvante/estadística & datos numéricos , Persona de Mediana Edad , Estudios Retrospectivos , Adulto , Anciano , Radioterapia Adyuvante , Estadificación de Neoplasias , Quimioterapia Adyuvante/métodos , Periodo Posoperatorio , Anciano de 80 o más Años , Puntaje de Propensión , Tasa de Supervivencia , Adulto Joven
2.
Ann Vasc Surg ; 98: 173-181, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-37802143

RESUMEN

BACKGROUND: The triglyceride-glucose (TyG) index is a new, simple, and inexpensive marker of insulin resistance that is becoming increasingly important as a promising predictor of diseases such as atherosclerosis. Atherosclerosis is the main cause of lower extremity arterial disease (LEAD). In this study, we investigated the relationship between TyG index values and LEAD risk in patients with diabetes. METHODS: Patients with diabetes hospitalized at the Endocrinology Department of our hospital from June 1, 2021, to May 31, 2022, were retrospectively included. Baseline data, biochemical indicators, and ankle-brachial index values were collected. Statistical methods were used to assess the relationship between TyG index values and the risk of LEAD. RESULTS: A total of 1,040 hospitalized patients with diabetes were included, they were divided into the LEAD group with 168 patients and the no LEAD group with 872 patients. TyG index values in the LEAD group were higher than those in the no LEAD group (9.94 ± 0.78 vs. 9.36 ± 0.70, P < 0.001). TyG index values were independently correlated with LEAD risk in patients with diabetes (odds ratio = 3.92, 95% confidence interval (CI): 2.92-5.26, P < 0.001) in multivariate logistic regression analysis after adjusting for different risk factors (all P < 0.05). The area under the receiver operating characteristic curve was 0.72 (95% CI: 0.68-0.76) when TyG index values were used to diagnose LEAD in patients with diabetes. When Youden's index reached the maximum value of 0.34, the optimal TyG index threshold for predicting the onset of diabetic LEAD was 9.56, sensitivity was 71.1%, and specificity was 63.0%. CONCLUSIONS: Increases in TyG index values were associated with the risk of LEAD in patients with diabetes and, thus, may be used as a predictor of LEAD in this patient population, especially in primary care institutions with relatively few resources.


Asunto(s)
Aterosclerosis , Diabetes Mellitus , Humanos , Estudios Retrospectivos , Resultado del Tratamiento , Diabetes Mellitus/diagnóstico , Diabetes Mellitus/epidemiología , Extremidad Inferior , Factores de Riesgo , Glucosa , Glucemia , Biomarcadores , Triglicéridos
3.
Angew Chem Int Ed Engl ; 63(4): e202315232, 2024 Jan 22.
Artículo en Inglés | MEDLINE | ID: mdl-38059757

RESUMEN

General methods for the preparation of geminal bis(boronates) are of great interest due to their widespread applications in organic synthesis. While the terminal gem-diboron compounds are readily accessible, the construction of the sterically encumbered, internal analogues has remained a prominent challenge. Herein, we report a formal umpolung strategy to access these valuable building blocks. The readily available 1,1-diborylalkanes were first converted into the corresponding α-halogenated derivatives, which then serve as electrophilic components, undergoing a formal substitution with a diverse array of nucleophiles to form a series of C-C, C-O, C-S, and C-N bonds. This protocol features good tolerance to steric hindrance and a wide variety of functional groups and heterocycles. Notably, this strategy can also be extended to the synthesis of diaryl and terminal gem-diboron compounds, therefore providing a general approach to various types of geminal bis(boronates).

4.
J Sci Food Agric ; 103(4): 1954-1963, 2023 Mar 15.
Artículo en Inglés | MEDLINE | ID: mdl-36347630

RESUMEN

BACKGROUND: Sulfonamide residues in foods of animal origin are potential risks to consumer health, so it is very important to inspect them. Among the previously reported instrumental methods, the best method can only be used to determine at most 22 sulfonamides. Thus, an instrumental method capable of determining more sulfonamide species is desirable. RESULTS: In this study, sulfadoxine was used as a template to synthesize a type of magnetic molecularly imprinted polymer that could recognize 35 sulfonamides. After characterization, this composite was used to develop a dispersive solid-phase extraction method for extraction and purification of the 35 sulfonamides in pork, followed by determination using an ultra-performance liquid chromatography photodiode array method. This composite exhibited high adsorption capacity (11.01-19.21 µg mg-1 ) and high recovery (>89.01%), and could be reused at least ten times. Due to the enrichment effect during sample preparation (enrichment factor 22-66), the limits of detection for determination of the 35 drugs in pork were in the range of 0.08-0.53 ng g-1 . The detection results for some real pork samples were consistent with a liquid chromatographic-tandem mass spectrometric method. After comparison, the present method showed generally better performances than the previously reported sample preparation methods and instrumental methods for detection of sulfonamides. CONCLUSION: The method developed in the present study could be used as a practical tool for routine detection of sulfonamide residues in pork samples. © 2022 Society of Chemical Industry.


Asunto(s)
Impresión Molecular , Carne de Cerdo , Carne Roja , Animales , Porcinos , Polímeros Impresos Molecularmente/análisis , Cromatografía Líquida de Alta Presión/métodos , Carne Roja/análisis , Carne de Cerdo/análisis , Sulfonamidas/química , Cromatografía Liquida , Extracción en Fase Sólida/métodos , Sulfanilamida , Fenómenos Magnéticos , Impresión Molecular/métodos
5.
Acta Cardiol Sin ; 39(6): 807-816, 2023 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-38022419

RESUMEN

Permanent pacemaker implantation is one of the most effective treatments for chronic arrhythmia. However, there is a certain risk associated with radiation therapy in cancer patients with implantable cardiac pacemakers. To prevent radiotherapy-induced pacemaker failure, there are established medical guidelines for the use of pacemakers in patients undergoing radiotherapy. With advancements in science and technology, the variety of available pacemakers has considerably increased, and radiotherapy equipment has also been updated. Given the variations in irradiation methods and the types of radiation used in clinical practice, there is a pressing need for international consensus on the regulations governing the use of cardiac pacemakers in cancer patients. Currently, many countries lack clinical guidelines for radiotherapy in cancer patients with cardiac pacemakers. This review summarizes recent reports and studies from PubMed (National Center for Biotechnology Information) regarding the safety of radiotherapy in cancer patients with implanted cardiac pacemakers, and provides valuable insights for clinical practice.

6.
Angew Chem Int Ed Engl ; 62(21): e202302638, 2023 May 15.
Artículo en Inglés | MEDLINE | ID: mdl-36960671

RESUMEN

Herein we reported a transition metal-free deborylative cyclization strategy, based on which two routes have been developed, generating racemic and enantioenriched cyclopropylboronates. The cyclization of geminal-bis(boronates) bearing a leaving group was highly diastereoselective, tolerating a few functional groups and applicable to heterocycles. When optically active epoxides were used as the starting materials, enantioenriched cyclopropylboronates could be efficiently prepared with >99 % stereospecificity. Mechanistic studies showed that the leaving group at the γ-position played a crucial role and significantly promoted the activation of the gem-diboron moiety.

7.
Microvasc Res ; 142: 104346, 2022 07.
Artículo en Inglés | MEDLINE | ID: mdl-35189176

RESUMEN

Alleviating vascular injury improves the prognosis of atherosclerosis. Semaphorin-3a (Sema3A) is a special membrane-associated secreted protein with various biological properties, like pro-inflammation, anti-tumor and et al. This study aims to investigate the effects of inhibition of Sema3A on lipopolysaccharide (LPS)-induced vascular injury in mice. The mice were randomized into three groups: control, LPS, and LPS + siRNA. Mice in the combined group were given siRNA through fast tail vein injection, then LPS was injected intraperitoneally 7 days later, finally the mice were euthanized 24 h later. Vascular function and structure were assessed by vascular injury biomarkers and relevant stainings. LPS-induced vascular dysfunction and pathological injury were substantially improved by inhibition of Sema3A. Western blot and quantitative real-time polymerase chain reaction assays were used for investigating molecular pathways. The relevant proteins of vascular endothelial cells activation, intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1), increased after LPS stimulation, while these effects were reversed by inhibition of Sema3A. The levels of inflammatory cytokines (IL-1ß, IL-6 and NLRP3) were upregulated after LPS stimulation, however, inhibition of Sema3A reversed it through NF-κB and MAPKs signaling pathways involvement. Moreover, inhibition of Sema3A alleviated LPS-induced oxidative stress, evidenced by a decrease in total reactive oxygen species and an increase in antioxidant protein of SOD-1. The results showed that inhibition of Sema3A protects against LPS-induced vascular injury by suppressing vascular endothelial cells activation, vascular inflammation, and vascular oxidative stress, implying that inhibition of Sema3A might be used as a therapeutic strategy for septic vascular injury or atherosclerosis.


Asunto(s)
Aterosclerosis , Lesiones del Sistema Vascular , Animales , Células Endoteliales/metabolismo , Inflamación/inducido químicamente , Inflamación/genética , Inflamación/prevención & control , Lipopolisacáridos/toxicidad , Ratones , FN-kappa B , ARN Interferente Pequeño , Semaforina-3A/genética , Semaforina-3A/metabolismo
8.
Crit Rev Food Sci Nutr ; 62(28): 7917-7928, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-34224281

RESUMEN

Zinc (Zn) is an essential micro-nutrient for humans, and Zn deficiency is of global concern. In addition to inherited and pathological Zn deficiencies, insufficient dietary intake is leading cause, especially in those consuming cereal grains as a stable food, in which Zn concentration and bioavailability are relatively low. To improve Zn levels in the human body, it is important to understand the accumulation and bioavailability of Zn in cereal grains. In recent years, knowledge on the molecular mechanisms underlying Zn uptake, transport, homeostasis, and deposition within cereal crops has been accumulating, paving the way for a more targeted approach to improving the nutrient status of crop plants. In this paper, we briefly review existing studies on the distribution and transport pathways of Zn in major small-grained cereals, using wheat as a case study. The findings confirm that Zn transport in plants is a complex physiological process mainly governed by Zn transporters and metal chelators. This work reviews studies on Zn uptake, transport, and deposition in wheat plants, summarizes the possible barriers impairing Zn deposition in wheat grains, and describes strategies for increasing Zn concentration in wheat grains.


Asunto(s)
Triticum , Zinc , Disponibilidad Biológica , Quelantes/metabolismo , Grano Comestible/metabolismo , Humanos
9.
Int J Mol Sci ; 23(8)2022 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-35457213

RESUMEN

Stem node has been found to be a hub for controlling mineral nutrient distribution in gramineous plants. However, the characteristics of stem nodes associated with whole-plant carbon partitioning in maize (Zea mays L.) and their responses to nitrogen (N) availability remains elusive. Maize plants were grown in greenhouse under low to high N supply. Plant growth, sugar accumulation, and sugar transporters in nodes and leaves, as well as the anatomical structure of nodes, were investigated at vegetative phase. When compared to N-sufficient plants, low-N availability stunted growth and resulted in 49-64% less sugars in leaves, which was attributed to low photosynthesis or the accelerated carbon export, as evidenced by more 13C detected further below leaf tips. Invariably higher sugar concentrations were found in the stem nodes, rather than in the leaves across N treatments, indicating a crucial role of nodes in facilitating whole-plant carbon partitioning. More and smaller vascular bundles and phloem were observed in stem nodes of N-deficient plants, while higher sugar levels were found in the bottom nodes than in the upper ones. Low-N availability upregulated the gene expressions of sugar transporters, which putatively function in nodes such as ZmSWEETs and ZmSUTs at the bottom stem, but suppressed them in the upper ones, showing a developmental impact on node function. Further, greater activity of sugar transporters in the bottom nodes was associated with less sugars in leaves. Overall, these results highlighted that stem nodes may play an important role in facilitating long-distance sugar transport in maize.


Asunto(s)
Nitrógeno , Zea mays , Carbohidratos , Carbono/metabolismo , Nitrógeno/metabolismo , Floema/metabolismo , Hojas de la Planta/metabolismo , Plantas/metabolismo , Azúcares/metabolismo , Zea mays/metabolismo
10.
Luminescence ; 36(7): 1767-1774, 2021 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-34270836

RESUMEN

In this study, nitrobenzene was used as dummy template to synthesize a type of specific molecularly imprinted microspheres for chloramphenicol, and 4-nitroaniline was coupled with three fluorophores to synthesize three fluorescent tracers. Then a competitive fluorescence method was developed on a conventional microplate for detection of chloramphenicol in chicken and pork samples. This method contained only one sample-loading step, so one assay was finished within 30 min. The IC50 was 1.8 ng/ml, and the limit of detection was 0.06 ng/g. The recoveries from chloramphenicol-fortified blank meat samples were in the range 67.5-96.2%. Furthermore, this method could be recycled three times. The detection results for some real meat samples were identical to that of a LC-MS/MS method. Therefore, this method could be used as a practical tool for routine screening for the residue of chloramphenicol in large number of meat samples.


Asunto(s)
Cloranfenicol , Impresión Molecular , Cloranfenicol/análisis , Cromatografía Liquida , Carne/análisis , Microesferas , Espectrometría de Masas en Tándem
11.
Small ; 16(3): e1905424, 2020 01.
Artículo en Inglés | MEDLINE | ID: mdl-31867877

RESUMEN

In cells, mechanical forces play a key role in impacting cell behaviors, including adhesion, differentiation, migration, and death. Herein, a 20 nm mitochondria-targeted zinc-doped iron oxide nanocube is designed as a nanospinner to exert mechanical forces under a rotating magnetic field (RMF) at 15 Hz and 40 mT to fight against cancer. The nanospinners can efficiently target the mitochondria of cancer cells. By means of the RMF, the nanocubes assemble in alignment with the external field and produce a localized mechanical force to impair the cancer cells. Both in vitro and in vivo studies show that the nanospinners can damage the cancer cells and reduce the brain tumor growth rate after the application of the RMF. This nanoplatform provides an effective magnetomechanical approach to treat deep-seated tumors in a spatiotemporal fashion.


Asunto(s)
Magnetismo , Mitocondrias/metabolismo , Nanotecnología , Neoplasias/terapia , Línea Celular Tumoral , Linaje de la Célula , Humanos , Fenómenos Mecánicos , Neoplasias/patología
12.
Bioconjug Chem ; 31(12): 2719-2725, 2020 12 16.
Artículo en Inglés | MEDLINE | ID: mdl-33226788

RESUMEN

Targeting mitochondria has always been a challenging goal for therapeutic nanoparticle agents due to their heterotypic features and size, which usually lead to a lysosome/endosome endocytosis pathway. To overcome this limitation, in this work, a portfolio targeting strategy combining a small targeting molecule with a biomembrane was developed. Modification of small targeting molecule H2N-TPP on gold nanoparticles (GNPs) could not only facilitate the mitochondrial targeting but could also induce gold nanoparticle assembly. Therefore, the GNPs were endowed with good absorption and photothermal conversion abilities in the near-infrared (NIR) region. Meanwhile, a biomimetic strategy was adopted by wrapping the gold nanoparticle assembly (GNA) with cancer cell membranes (CCMs), which helped the GNA enter the prostatic cancer cell via a homotypic membrane-fusion process to avoid being trapped in endosomes/lysosomes. Thereafter, the GNA remaining in the cytoplasm could reach mitochondria more efficiently via guidance from H2N-TPP molecules. This "biomembrane-small molecule" combination targeting process was evidenced by fluorescence microscopy, and the highly efficient photothermal ablation of prostatic tumors in vivo was demonstrated. This portfolio targeting strategy could be extended to various nanodrugs/agents to realize an accurate subcellular targeting efficiency for cancer treatments or cell detections.


Asunto(s)
Oro/química , Oro/metabolismo , Rayos Infrarrojos , Fusión de Membrana , Nanopartículas del Metal/química , Mitocondrias/metabolismo , Fototerapia/métodos , Biomimética , Línea Celular Tumoral , Endosomas/metabolismo , Humanos , Lisosomas/metabolismo
13.
J Craniofac Surg ; 30(8): e776-e780, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31689739

RESUMEN

OBJECTIVE: Granulocyte colony-stimulating factor (G-CSF) is the critical regulator of the proliferation, differentiation, and survival of granulocytes. Recently, it has been shown that G-CSF can adversely affect bone health in both animal models and patients. Here, the authors aimed to investigate whether G-CSF could inhibit the growth of osteoblasts and osteocytes by regulating nitric oxide. METHODS: The C57BL/6 mice were divided into the control group, G-CSF treatment group and recovery group (G-CSF+L-NAME). The morphology of femurs was assessed by histology and immunohistochemistry. The expression of apoptosis-related molecules in femurs was detected by immunohistochemistry and quantitative RT-PCR, respectively. To examine if neutrophil-secreted factors can induce apoptosis in osteoblasts, Gr1-positive (Gr1+) neutrophils from the bone marrow of wild-type mice were sorted and co-cultured with MC3T3 pre-osteoblasts for 2 days. RESULTS: The number of osteoblasts and newly embedding osteocytes significantly decreased and markers related to osteoblasts and osteocytes were downregulated in the G-CSF treatment compared to the control group. Moreover, G-CSF treatment did not change proliferation markers but induced apoptosis in osteoblast-lineage cells. The combined treatment of mice with G-CSF and a nitric oxide inhibitor partially restored the number of osteoblasts and osteocyte parameters. CONCLUSIONS: The G-CSF can inhibit osteoblasts and osteocytes by upregulating nitric oxide.


Asunto(s)
Factor Estimulante de Colonias de Granulocitos/farmacología , Neutrófilos/efectos de los fármacos , Óxido Nítrico/biosíntesis , Osteoblastos/efectos de los fármacos , Osteocitos/efectos de los fármacos , Animales , Apoptosis/efectos de los fármacos , Proliferación Celular/efectos de los fármacos , Femenino , Ratones , Ratones Endogámicos C57BL , Neutrófilos/citología , Neutrófilos/metabolismo , Osteoblastos/citología , Osteocitos/citología , Osteocitos/metabolismo , Regulación hacia Arriba/efectos de los fármacos
14.
Anal Chem ; 90(12): 7122-7126, 2018 06 19.
Artículo en Inglés | MEDLINE | ID: mdl-29865790

RESUMEN

We reported the first lysosome targeted two-photon fluorescent probe (Lyso-NP) as a viscosity probe for monitoring autophagy. The fluorescence lifetime of Lyso-NP exhibited an excellent linear relationship with viscosity value ( R2 = 0.99, x = 0.39). Lyso-NP also showed the specific capability for imaging lysosomal viscosity under two-photon excitation at 860 nm along with good biocompatibility. More importantly, Lyso-NP could be used to monitor the autophagy process in living cells by quantitatively detecting lysosomal viscosity changes during the membrane fusion process via two-photon fluorescence lifetime imaging.


Asunto(s)
Autofagia , Colorantes Fluorescentes/química , Imagen Óptica , Fotones , Humanos , Células MCF-7 , Microscopía Fluorescente , Estructura Molecular , Viscosidad
15.
J Exp Bot ; 69(7): 1707-1719, 2018 03 24.
Artículo en Inglés | MEDLINE | ID: mdl-29361032

RESUMEN

Maize (Zea mays) plants exhibit altered carbon partitioning under nitrogen (N) deficiency, but the mechanisms by which N availability affects sugar export out of leaves and transport into developing ears remain unclear. Maize was grown under field conditions with different N supply. Plant growth, sugar movement, and starch turnover in source or sink tissues were investigated at silking and 20 or 21 days after silking. Nitrogen deficiency stunted plant growth and grain yield compared with N-sufficient plants, and resulted in greater starch concentrations in leaves due to more as well as larger starch granules in bundle sheath cells. Transmission electron microscopy revealed an open symplastic pathway for sucrose movement in N-deficient leaves, while the expression levels of transporters responsible for sucrose efflux and phloem loading were lower than in N-sufficient leaves. Nonetheless, greater starch concentrations in the apical cob portion of N-deficient plants implied sufficient carbon supply relative to the diminished sink strength (decreased kernel number and weight). Together with the high sugar concentrations in the developing kernels, the results indicated that reduced sink capacity and sugar utilization during grain filling may limit the yield in N-deficient plants, which in turn imposes a feedback inhibition on sugar export from leaves.


Asunto(s)
Carbono/metabolismo , Grano Comestible/crecimiento & desarrollo , Nitrógeno/deficiencia , Azúcares/metabolismo , Zea mays/metabolismo , Transporte Biológico , Secuestro de Carbono , Grano Comestible/metabolismo , Hojas de la Planta/metabolismo , Zea mays/crecimiento & desarrollo
16.
J Am Chem Soc ; 139(8): 3181-3185, 2017 03 01.
Artículo en Inglés | MEDLINE | ID: mdl-28170238

RESUMEN

Fluorescent probes, as noninvasive tools for visualizing the metabolism of biomolecules, hold great potential to explore their physiological and pathological processes. For cysteine (Cys), however, none of the reported fluorescent probes could image the metabolic processes in living cells. To achieve this goal, we developed a coumarin derivative based on rational design of the dual recognition sites for Cys and its metabolite, SO2. The probe displayed distinct two channels with turn-on fluorescent emission toward Cys and SO2, which were successfully applied for imaging both A549 cells and zebrafish. Further, with reversible fluorescent responses toward Cys, the probe could image the enzymatic conversion of Cys to SO2 in living A549 cells in a ratiometric manner. The present work reports the first probe to image the endogenous generated SO2 without incubation of the SO2 donors.


Asunto(s)
Cisteína/metabolismo , Colorantes Fluorescentes/química , Dióxido de Azufre/metabolismo , Animales , Línea Celular Tumoral , Cisteína/química , Fluorescencia , Colorantes Fluorescentes/metabolismo , Humanos , Estructura Molecular , Espectrofotometría Ultravioleta , Dióxido de Azufre/química , Pez Cebra
17.
Anal Chem ; 89(15): 8079-8083, 2017 08 01.
Artículo en Inglés | MEDLINE | ID: mdl-28613828

RESUMEN

Herein, a novel near-infrared fluorescent probe for ratiometric detection of bisulfate was designed and developed based on a conjugation of naphthopyran-benzothiazolium system. The sensor showed excellent selectivity, high sensitivity and a rapid response toward bisulfite in aqueous solution. Upon the addition of HSO3-, the sensor displayed 37-fold (I520/I630) fluorescence intensity enhancement, accompanied by an apparent color change from violet to colorless, suggesting that the sensor can be used to detect HSO3- with "naked-eye". Notably, the addition product can be applied to the design of regenerative chemodosimeters based on the H2O2 promoted elimination of bisulfite and recovery of probe 1. Further cell and zebrafish imaging experiment demonstrated that the sensor could image the bisulfite/H2O2 redox cycle in biological system with ratiometric manners.


Asunto(s)
Colorantes Fluorescentes/química , Peróxido de Hidrógeno/análisis , Sulfitos/análisis , Pez Cebra/metabolismo , Animales , Colorantes Fluorescentes/síntesis química , Humanos , Células MCF-7 , Microscopía Confocal , Espectrometría de Fluorescencia
18.
J Med Case Rep ; 18(1): 51, 2024 Jan 22.
Artículo en Inglés | MEDLINE | ID: mdl-38247005

RESUMEN

BACKGROUND: As a newly approved immune checkpoint inhibitor in China, serplulimab has been widely used in the immunotherapy of tumors. However, the immune-related adverse events of immune checkpoint inhibitors should not be ignored. Although immune checkpoint inhibitor-induced type 1 diabetes mellitus is a rare complication, it may cause diabetic ketoacidosis and endanger the lives of patients. CASE PRESENTATION: This case report describes a 55-year-old male of Han nationality from China diagnosed with small-cell lung cancer with multiple metastases who experienced an adverse event of type 1 diabetes mellitus 68 weeks after receiving serplulimab therapy. The patient presented with typical symptoms of diabetic ketoacidosis, including severe thirst, nausea, vomiting, deep respirations, and stupor. Despite the absence of diabetes-related autoantibodies, the patient had extremely low levels of insulin and C-peptide release. Other potential causes of diabetes were ruled out, confirming the condition as serplulimab-induced immune checkpoint inhibitor-induced type 1 diabetes mellitus. After aggressive treatment to correct diabetic ketoacidosis, the patient's blood glucose levels stabilized and symptoms of diabetes improved significantly, although long-term insulin maintenance therapy was necessary. CONCLUSION: This case highlights a rare, late-onset adverse event of immune checkpoint inhibitor-induced type 1 diabetes mellitus that may be overlooked during treatment with serplulimab. The monitoring of blood glucose levels and early signs and symptoms of diabetes cannot be relaxed at the late stage of treatment, even if patients do not have elevated blood glucose levels before and during the middle stage of treatment.


Asunto(s)
Diabetes Mellitus Tipo 1 , Cetoacidosis Diabética , Neoplasias Pulmonares , Carcinoma Pulmonar de Células Pequeñas , Masculino , Humanos , Persona de Mediana Edad , Diabetes Mellitus Tipo 1/inducido químicamente , Diabetes Mellitus Tipo 1/tratamiento farmacológico , Inhibidores de Puntos de Control Inmunológico/efectos adversos , Cetoacidosis Diabética/inducido químicamente , Glucemia , Neoplasias Pulmonares/tratamiento farmacológico , Carcinoma Pulmonar de Células Pequeñas/tratamiento farmacológico , Insulina , Anticuerpos Monoclonales
19.
Technol Health Care ; 32(1): 293-301, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-37393454

RESUMEN

BACKGROUND: Lung cancer is prone to metastasize to the brain, which is difficult for surgery and leads to poor prognosis due to poor chemotherapy efficacy. OBJECTIVE: Our aim is to evaluate the efficacy and safety of stereotactic body radiotherapy (SBRT) for brain multi-metastases. METHODS: In the retrospective study, a total of 51 non-small cell lung cancer (NSCLC) patients with brain multi-metastases (3-5 metastases) receiving SBRT in the local hospital between 2016 and 2019 were enrolled for analyzing the efficacy and safety of SBRT. The primary endpoints included 1-year local control rate, radiotherapy toxicity, overall survival and progression-free survival. RESULTS: The median follow-up for the enrolled patients was 21 months, and the 1-year and 2-year OS rates were 82.4% and 45.1%, respectively. Demographic analysis showed no significant differences between SBRT alone and combination with whole brain radiotherapy in clinical characteristics including age, gender and Eastern Cooperative Oncology Group performance status. The 1-year local control rate was 77.3% (17/22) for SBRT alone, which was comparable to 79.3% (23/29) of combined radiotherapy. Cox proportional hazard regression demonstrated that the prognostic benefit of combining WBRT was not significantly superior to SBRT alone (HR = 0.851, P= 0.263). Their radiotherapy toxicity rate was lower in SBRT alone group (13.6%, vs. 44.8% for combination; P= 0.017). CONCLUSION: The current research suggested that SBRT alone could effectively relieve tumor burden and improve the prognosis and quality of life for NSCLC patients with brain multi-metastases, which should be validated in further prospective clinical trials.


Asunto(s)
Neoplasias Encefálicas , Carcinoma de Pulmón de Células no Pequeñas , Neoplasias Pulmonares , Radiocirugia , Humanos , Carcinoma de Pulmón de Células no Pequeñas/radioterapia , Carcinoma de Pulmón de Células no Pequeñas/cirugía , Neoplasias Pulmonares/radioterapia , Neoplasias Pulmonares/patología , Radiocirugia/efectos adversos , Estudios Retrospectivos , Calidad de Vida , Neoplasias Encefálicas/radioterapia , Encéfalo/patología , Resultado del Tratamiento
20.
Diabetol Metab Syndr ; 16(1): 25, 2024 Jan 22.
Artículo en Inglés | MEDLINE | ID: mdl-38254166

RESUMEN

BACKGROUND: Abnormalities in glucose and lipid metabolism contribute to the progression and exacerbation of type 2 diabetes mellitus (T2DM). Fish oil and probiotics are dietary supplements that have the potential to improve glucose and lipid metabolism. However, their efficacy remains unclear in T2DM patients. METHODS: PubMed, Embase, and the Cochrane Library were retrieved to collect randomized controlled trials (RCTs) on the efficacy of fish oil or probiotic supplementation in T2DM patients from the database inception to December 13, 2023. Primary outcome indicators encompassed glycated hemoglobin (HbA1c), homeostatic model assessment for insulin resistance (HOMA-IR) and blood lipid profile (triglyceride (TG) and total cholesterol (TC). Secondary outcome indicators included inflammatory markers such as tumor necrosis factor -α (TNF-α) and adipocytokine (including leptin and adiponectin). The R software was used for statistical analysis, and GraphPad Prism was used for figure rendering. RESULTS: A total of 60 RCTs involving 3845 T2DM patients were included in the analysis. The results showed that the probiotics (Bifidobacterium, Lactobacillus, Lactococcus, Propionibacterium, etc.) were more effective in reducing HOMA-IR than fish oil (Surca = 0.935). Bifidobacterium demonstrated the highest efficacy in reducing HbA1c levels (Surca = 0.963). Regarding lipid metabolism, fish oil was superior to probiotics in lowering TG and TC levels (Surca values of 0.978 and 0.902, respectively). Furthermore, fish oil outperformed probiotics in reducing TNF-α (Surca = 0.839) and leptin (Surca = 0.712), and increasing adiponectin levels (Surca = 0.742). Node-splitting analysis showed good consistency (P > 0.05 for direct, indirect, and network comparison across various interventions). CONCLUSIONS: In T2DM patients, fish oil was more effective than probiotics in regulating lipid metabolism. Probiotics outperformed fish oil in regulating glucose metabolism particularly; specifically, Bifidobacterium showed higher efficacy in reducing blood glucose.

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