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1.
BMC Public Health ; 23(1): 714, 2023 04 19.
Artículo en Inglés | MEDLINE | ID: mdl-37076853

RESUMEN

OBJECTIVES: Myocarditis, a health-threatening heart disease, is attracting increasing attention. This systematic study was conducted to study the prevalence of disease through the trends of incidence, mortality, disability-adjusted life years (DALYs) over the last 30 years, which would be helpful for the policymakers to better the choices for reasonable decisions. METHODS: The global, regional, and national burdens of myocarditis from 1990-2019 were analyzed by using the 2019 Global Burden of Disease (GBD) database. This study on myocarditis produced new findings according to age, sex, and Social-Demographic Index (SDI) by investigating DALYs, age-standardized incidence rate (ASIR), age-standardized death rate (ASDR), and corresponding estimated annual percentage change (EAPC). RESULTS: The number of myocarditis incidence increased by 62.19%, from 780,410 cases in 1990 to 1,265,770 cases in 2019. The ASIR decreased by 4.42% (95%CI, from -0.26% to -0.21%) over the past 30 years. The number of deaths from myocarditis increased by 65.40% from 19,618 in 1990 to 324,490 in 2019, but the ASDR was relatively stable over the investigated period. ASDR increased in low-middle SDI regions (EAPC=0.48; 95%CI, 0.24 to 0.72) and decreased in low SDI regions (EAPC=-0.97; 95%CI, from -1.05 to -0.89). The age-standardized DALY rate decreased by 1.19% (95%CI, from -1.33% to -1.04%) per year. CONCLUSIONS: Globally, the ASIR and DALY for myocarditis decreased and the ASDR was stable over the past 30 years. The risk of incidences and death cases increased with age. Measures should be taken to control the risk of myocarditis in high-burden regions. Medical supplies should be improved in the high-middle SDI regions and middle SDI regions to reduce the deaths from myocarditis in these regions.


Asunto(s)
Carga Global de Enfermedades , Miocarditis , Humanos , Años de Vida Ajustados por Calidad de Vida , Miocarditis/epidemiología , Salud Global , Años de Vida Ajustados por Discapacidad , Incidencia
2.
Proc Natl Acad Sci U S A ; 115(16): 4218-4222, 2018 04 17.
Artículo en Inglés | MEDLINE | ID: mdl-29610342

RESUMEN

Reactive oxygen species formed within the mammalian cell can produce 8-oxo-7,8-dihydroguanine (8-oxoG) in mRNA, which can cause base mispairing during gene expression. Here we found that administration of 8-oxoGTP in MTH1-knockdown cells results in increased 8-oxoG content in mRNA. Under this condition, an amber mutation of the reporter luciferase is suppressed. Using second-generation sequencing techniques, we found that U-to-G changes at preassigned sites of the luciferase transcript increased when 8-oxoGTP was supplied. In addition, an increased level of 8-oxoG content in RNA induced the accumulation of aggregable amyloid ß peptides in cells expressing amyloid precursor protein. Our findings indicate that 8-oxoG accumulation in mRNA can alter protein synthesis in mammalian cells. Further work is required to assess the significance of these findings under normal physiological conditions.


Asunto(s)
Guanina/análogos & derivados , Mutagénesis/genética , Biosíntesis de Proteínas/genética , Transcripción Genética/genética , Péptidos beta-Amiloides/genética , Anticodón/genética , Emparejamiento Base , Codón sin Sentido , Enzimas Reparadoras del ADN/antagonistas & inhibidores , Enzimas Reparadoras del ADN/genética , Técnicas de Silenciamiento del Gen , Genes Reporteros , Guanina/química , Células HeLa , Humanos , Luciferasas/genética , Monoéster Fosfórico Hidrolasas/antagonistas & inhibidores , Monoéster Fosfórico Hidrolasas/genética , Interferencia de ARN , ARN Mensajero/biosíntesis , ARN Mensajero/genética , ARN Interferente Pequeño/genética , Especies Reactivas de Oxígeno
3.
J Org Chem ; 84(1): 53-59, 2019 Jan 04.
Artículo en Inglés | MEDLINE | ID: mdl-30566353

RESUMEN

A novel rhodium-catalyzed tandem reaction of isocyanides with azides and various oxygen nucleophiles has been developed. The reaction provides a simple and highly efficient one-pot synthesis of various N-sulfonyl/acylisoureas with broad substrate scope in an atom-economical manner from readily available starting materials in a highly stereoselective manner.

4.
Zhongguo Zhong Yao Za Zhi ; 43(6): 1093-1098, 2018 Mar.
Artículo en Zh | MEDLINE | ID: mdl-29676113

RESUMEN

Pharmacometabolomics is a new and rapidly growing field in life science, which use metabolomics for studying drug effects and variation in drug response. Recently, it has been widely used in individualized medicine research. The research process of pharmacometabolomic can be divided into three parts: metabolomic study of baseline samples, drug response analysis after drug administration and statistical analysis. By combining the baseline information on metabotype of an individual with the drug response phenotype after drug exposure, pharmacometabolomic method can be used to predict the efficacy and toxicity of drugs, which providing the theoretical basis for individualized medical treatment. In this paper, we give an overview of present studies in the application of pharmacometabolomics for predicting the individualized drug response. Besides, we also summarized the specific research processes and pharmacometabolomic methods.


Asunto(s)
Metabolómica , Preparaciones Farmacéuticas , Investigación Farmacéutica , Medicina de Precisión , Fenotipo
5.
Org Biomol Chem ; 15(48): 10156-10159, 2017 Dec 13.
Artículo en Inglés | MEDLINE | ID: mdl-29181478

RESUMEN

A novel copper-catalyzed N-oxide oxidation of N-sulfonyl ynamides is disclosed. This non-noble metal-catalyzed protocol enables facile and efficient access to valuable α-keto imides in generally good to excellent yields. Other notable features of this method include widespread availability of the substrates, compatibility with broad functional groups, a simple procedure, mild conditions, and in particular, no need to exclude moisture or air ("open flask").

6.
Zhongguo Zhong Yao Za Zhi ; 42(10): 1922-1931, 2017 May.
Artículo en Zh | MEDLINE | ID: mdl-29090552

RESUMEN

Diagnostic ions filter method was used to rapidly detect and identify the phenolic compounds in Rheum palmatum based on ultra performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF/MSE). The representative authentic standards of phenolic compounds, including gallic acid, (+)-catechin, (-)-epicatechin, (-)-epicatechin-3-O-gallate and procyanidin B2, were subjected to analysis by UPLC-Q-TOF/MSE system with negative ion mode. Fragmentation patterns of each standard were summarized based on assigned fragment ions. The prominent product ions were selected as diagnostic ions. Subsequently, diagnostic ions filter was employed to rapidly recognize analogous skeletons. Combined with retention time, accurate mass, characteristic fragments and previous literature data, the structures of the filtered compounds were identified or tentatively characterized. A total 63 phenolic compounds (36 phenolic acid derivatives, 8 flavonoid derivatives and 19 tennis derivatives) in R. palmatum were identified, including 6 potential new compounds. The method of diagnostic ions filter could rapidly detect and identify phenolic compounds in R. palmatum This study provides a method for rapid detection of phenolic compounds in R. palmatum and is expected to complete the material basis of rhubarb.


Asunto(s)
Fenoles/análisis , Fitoquímicos/análisis , Rheum/química , Catequina/análisis , Cromatografía Líquida de Alta Presión , Flavonoides/análisis , Ácido Gálico/análisis , Iones
7.
Biochem Biophys Res Commun ; 465(2): 225-31, 2015 Sep 18.
Artículo en Inglés | MEDLINE | ID: mdl-26248136

RESUMEN

BACKGROUND AND OBJECTIVE: Long non-coding RNA, BANCR, has been demonstrated to contribute to the proliferation and migration of tumors. However, its molecular mechanism underlying gastric cancer is still unknown. In present study, we investigated whether BANCR was involved in the development of gastric cancer cells via regulation of NF-κB1. METHODS: Human gastric cancer tissues were isolated as well as human gastric cell lines MGC803 and BGC823 were cultured to investigate the role of BANCR in gastric cancer. RESULTS: BANCR expression was significantly up-regulated in gastric tumor tissues and gastric cell lines. Down-regulation of BANCR inhibited gastric cancer cell growth and promoted cell apoptosis, and it also contributed to a significant decrease of NF-κB1 (P50/105) expression and 3'UTR of NF-κB1 activity. Overexpression of NF-κB1 reversed the effect of BANCR on cancer cell growth and apoptosis. MiroRNA-9 (miR-9) targeted NF-κB1, and miR-9 inhibitor also reversed the effects of BANCR on gastric cancer cell growth and apoptosis. CONCLUSION: BANCR was highly expressed both in gastric tumor tissues and in cancer cells. NF-κB1 and miR-9 were involved in the role of BANCR in gastric cancer cell growth and apoptosis.


Asunto(s)
Adenocarcinoma/genética , Regulación Neoplásica de la Expresión Génica , MicroARNs/genética , FN-kappa B/genética , ARN Largo no Codificante/genética , Neoplasias Gástricas/genética , Regiones no Traducidas 3' , Adenocarcinoma/metabolismo , Adenocarcinoma/patología , Animales , Apoptosis , Línea Celular Tumoral , Proliferación Celular , Humanos , Ratones , Ratones Desnudos , MicroARNs/antagonistas & inhibidores , MicroARNs/metabolismo , FN-kappa B/antagonistas & inhibidores , FN-kappa B/metabolismo , Trasplante de Neoplasias , Proteínas Proto-Oncogénicas B-raf/genética , Proteínas Proto-Oncogénicas B-raf/metabolismo , ARN Largo no Codificante/antagonistas & inhibidores , ARN Largo no Codificante/metabolismo , ARN Interferente Pequeño/genética , ARN Interferente Pequeño/metabolismo , Transducción de Señal , Neoplasias Gástricas/metabolismo , Neoplasias Gástricas/patología
8.
Zhongguo Zhong Yao Za Zhi ; 39(4): 594-600, 2014 Feb.
Artículo en Zh | MEDLINE | ID: mdl-25204128

RESUMEN

It has been showed that there were obvious obstacle effects of Panax notoginseng replanting. Crop rotation was the main effective technique to overcome the obstacle. To find a reasonable crop rotation system for P. notoginseng, aqueous extracts from root, stem and leaf of P. notoginseng were analyzed for allelopathic effect on three maize varieties (which are often grown in regions where P. notoginseng grown). The main results were as follows: (1) Allelopathic effect of P. notoginseng stem and leaf extracts on the three other tested plants was stronger than that of root extracts; (2) Corn was more vulnerable to the effects of allelochemicals at seedling stage than at germination stage, and the corn root was more sensitive than aerial part to allelochemicals; (3) Lusan No. 3 and Yunrui No. 1 showed resistance to P. notoginseng allelopathy, with respective comprehensive sensitivity indexes (M3) of - 0.089 3 and -0.159 2, while Bainuo No. 1 is sensitive at M3 = -0.261 0. It then can be concluded that Lusan No. 3 and Yunrui No. 1 may be an alternative rotation plants for overcoming P. notoginseng continuous cropping obstacle.


Asunto(s)
Panax notoginseng/química , Feromonas/farmacología , Extractos Vegetales/farmacología , Zea mays/efectos de los fármacos , Zea mays/crecimiento & desarrollo , Alelopatía , Panax notoginseng/crecimiento & desarrollo , Hojas de la Planta/química , Raíces de Plantas/química , Tallos de la Planta/química
9.
Zhongguo Dang Dai Er Ke Za Zhi ; 16(11): 1143-8, 2014 Nov.
Artículo en Zh | MEDLINE | ID: mdl-25406561

RESUMEN

OBJECTIVE: To explore the mechanism and effect of maternal high-fat diet before and during pregnancy on bone growth of neonatal offspring rats. METHODS: Forty female Sprague-Dawley rats were divided into high-fat diet and control groups (n=20) that were fed with 35% high-fat diet and standard chow, respectively. After 8 weeks, 8 female rats from each group were sacrificed for liver pathological examinations and the other female rats were mated with male rats and fed continuously with 35% high-fat diet and standard chow throughout gestation, respectively. The body lengths (from apex nasi to end of tail) of the offspring rats from both groups were measured within 24 hours after birth. Enzyme-linked immunosorbent assay was used to detect serum insulin-like growth factor (IFG-I) levels. Liver pathological changes were observed under a light microscope. The expression of insulin receptor substrate 1 (IRS-1) and phosphorylation IRS-1 (Phospho-IRS-1) in tibia and femur samples were detected by immunohistochemistry. The expression of mitogen-activated protein kinase (MAPK) and phosphorylation MAPK (Phospho-MAPK), phosphatidylinositol 3-kinase (PI3K) and phosphorylation PI3K (Phospho-PI3K), protein kinase B (AKT1) and phosphorylation AKT1 (Phospho-AKT1) in tibia and femur samples were detected by Western blot. RESULTS: The offspring rats from the high-fat diet group showed a significant shorter body length compared with those from the control group (P<0.05). The level of serum IGF-I in offspring rats from the high-fat diet group decreased by 20.1% in comparison to those from the control group, but there was no significant difference between the two groups (P>0.05). Fatty degeneration was found in livers of both high-fat diet-fed maternal rats and their offspring rats under a light microscope. There were no significant differences in IRS-1 and Phospho-IRS-1 expression in chondrocytes of tibia and femur samples between the offspring rats of the two groups (P>0.05). The protein expression of MAPK in chondrocytes of tibia and femur samples of offspring rats from the high-fat diet group was higher than that from the control group (P<0.05). There were no significant differences of PI3K and AKT1/Phospho-AKT1 between the offspring rats of the two groups (P>0.05). CONCLUSIONS: A maternal high-fat diet before and during pregnancy may affect the bone growth of offspring rats in utero, which is possibly associated with the decreased IGF-I level. However, further study on the exact mechanism of IGF-I on the bone growth is needed.


Asunto(s)
Desarrollo Óseo , Dieta Alta en Grasa , Fenómenos Fisiologicos Nutricionales Maternos , Animales , Femenino , Factor I del Crecimiento Similar a la Insulina/análisis , Hígado/patología , Sistema de Señalización de MAP Quinasas , Fosfatidilinositol 3-Quinasas/fisiología , Embarazo , Proteínas Proto-Oncogénicas c-akt/fisiología , Ratas , Ratas Sprague-Dawley
10.
Hepat Med ; 16: 1-9, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38283915

RESUMEN

Background and Aims: Hepatic encephalopathy (HE) is characterized by neuropsychiatric manifestations in patients with decompensated cirrhosis (DC) and/or liver failure. This study aimed to investigate the predictive value of thyroid hormone in patients with HE. Methods: Patients with DC and HE were enrolled, and multivariate logistic analysis was conducted to analyze the risk factors for 1-year mortality. Results: Among the 81 patients with HBV-related DC and HE, 9 (11.1%) died within 3 months, and 15 (18.5%) died within the first year. More patients with FT3 < 3.5pmol/L had ascites (33.3% vs 8.9%, P<0.01) and higher model for end-stage liver disease (MELD) (Z=3.669, P<0.01). Additionally, free triiodothyronine (FT3) levels were lower in the non-survivor group (P<0.01). FT3 exhibited a negative correlation with international normalized ratio and MELD (both P<0.05). Multivariate analysis revealed that FT3, gamma-glutamyl transpeptidase (GGT), and spontaneous bacterial peritonitis (SBP) were independent risk factors for 1-year mortality of HE. A new model incorporating FT3, GTT, and SBP demonstrated superiority to MELD based on the AUROC (0.9 and 0.752, P=0.04). Conclusion: Low FT3, but not thyroid-stimulating hormone and free tetraiodothyronine, was identified as an independent risk factor for 1-year mortality in patients with DC and HE. The newly proposed prognostic model, which includes FT3, GTT, and SBP, holds significant predictive value.

11.
PLoS Genet ; 6(1): e1000806, 2010 Jan 08.
Artículo en Inglés | MEDLINE | ID: mdl-20072603

RESUMEN

Osteoporosis is a major public health problem. It is mainly characterized by low bone mineral density (BMD) and/or low-trauma osteoporotic fractures (OF), both of which have strong genetic determination. The specific genes influencing these phenotypic traits, however, are largely unknown. Using the Affymetrix 500K array set, we performed a case-control genome-wide association study (GWAS) in 700 elderly Chinese Han subjects (350 with hip OF and 350 healthy matched controls). A follow-up replication study was conducted to validate our major GWAS findings in an independent Chinese sample containing 390 cases with hip OF and 516 controls. We found that a SNP, rs13182402 within the ALDH7A1 gene on chromosome 5q31, was strongly associated with OF with evidence combined GWAS and replication studies (P = 2.08x10(-9), odds ratio = 2.25). In order to explore the target risk factors and potential mechanism underlying hip OF risk, we further examined this candidate SNP's relevance to hip BMD both in Chinese and Caucasian populations involving 9,962 additional subjects. This SNP was confirmed as consistently associated with hip BMD even across ethnic boundaries, in both Chinese and Caucasians (combined P = 6.39x10(-6)), further attesting to its potential effect on osteoporosis. ALDH7A1 degrades and detoxifies acetaldehyde, which inhibits osteoblast proliferation and results in decreased bone formation. Our findings may provide new insights into the pathogenesis of osteoporosis.


Asunto(s)
Aldehído Deshidrogenasa/genética , Predisposición Genética a la Enfermedad , Estudio de Asociación del Genoma Completo , Osteoporosis/genética , Anciano , Pueblo Asiatico/genética , Densidad Ósea , Estudios de Casos y Controles , Femenino , Humanos , Masculino , Persona de Mediana Edad , Osteoporosis/fisiopatología , Polimorfismo de Nucleótido Simple , Población Blanca/genética
12.
Zhonghua Nan Ke Xue ; 19(3): 232-5, 2013 Mar.
Artículo en Zh | MEDLINE | ID: mdl-23700729

RESUMEN

OBJECTIVE: To explore the clinical application of high-frequency ultrasound in the diagnosis and treatment of epididymal stasis after vasectomy. METHODS: We retrospectively studied the sonographic characteristics of 23 cases of epididymal stasis treated by vasectomy, which were divided into a mild (n = 5), a moderate (n = 11) and a severe group (n = 7) according to the results of color Doppler flow imaging. We analyzed the significance of high-frequency ultrasonography in the treatment of epididymal stasis after vasectomy. RESULTS: High-frequency ultrasonography revealed 14 cases of increased bilateral epididymal volume, 6 cases of left epididymal thickening and 3 cases of right epididymal thickening, mainly the thickening of the epididymal body and tail. After conservative treatment, 18 of the epididymal stasis cases (5 mild, 11 moderate and 2 severe) were improved, and the other 5 severe cases significantly relieved and discharged from hospital following conservative treatment combined with vasectomy reversal. CONCLUSION: Post-vasectomy epididymal stasis has typical sonographic characteristics, and high-frequency ultrasonography has an extremely important application value in the clinical classification, diagnosis and treatment of the disease.


Asunto(s)
Epidídimo/diagnóstico por imagen , Enfermedades de los Genitales Masculinos/diagnóstico por imagen , Ultrasonografía/métodos , Adulto , Anciano , Enfermedades de los Genitales Masculinos/etiología , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Vasectomía/efectos adversos
13.
Artículo en Inglés | MEDLINE | ID: mdl-36934999

RESUMEN

BACKGROUND: Post-traumatic stress disorder (PTSD) is a mental disorder that can emerge after an individual experiences a traumatic event such as physical abuse, sexual/relationship violence, combat exposure, witnessing death, or serious injury. This study aimed to identify the most suitable drugs for the management of PTSD based on a network meta-analysis (NMA). METHODS: Six databases (Ovid Medline, EMBase, CENTRAL, PsycINFO, Ovid Health and Psychosocial Instruments, and Web of Science) were searched from inception to September 6, 2022. RESULTS: Thirty articles with a total of 5170 participants were included. Compared with placebo, active drugs including olanzapine (SMD = -0.66, 95% CI: -1.19 to -0.13), risperidone (SMD = -0.23, 95% CI: -0.42 to -0.03), quetiapine (SMD = -0.49, 95% CI: -0.93 to -0.04), venlafaxine (SMD = -0.29, 95% CI: -0.42 to -0.16), sertraline (SMD = -0.23, 95% CI: -0.34 to -0.11), paroxetine (SMD = -0.48, 95% CI: -0.60 to -0.36) and fluoxetine (SMD = -0.27, 95% CI: -0.42 to -0.12), significantly reduced the total clinician-administered PTSD scale score. CONCLUSION: The results of this study support the use of paroxetine, venlafaxine, and quetiapine as first-line treatment for PTSD. In addition, quetiapine is recommended for patients with PTSD affected by symptoms of hyperarousal and re-experience disorder. Clinicians should prescribe medications based on the severity of PTSD symptoms and other conditions to develop the best treatment strategy for this patient population.


Asunto(s)
Terapia Cognitivo-Conductual , Trastornos por Estrés Postraumático , Humanos , Trastornos por Estrés Postraumático/diagnóstico , Terapia Cognitivo-Conductual/métodos , Paroxetina , Fumarato de Quetiapina/uso terapéutico , Clorhidrato de Venlafaxina/uso terapéutico , Metaanálisis en Red
14.
Zhongguo Zhen Jiu ; 43(11): 1221-1225, 2023 Oct 11.
Artículo en Inglés, Zh | MEDLINE | ID: mdl-37984918

RESUMEN

OBJECTIVES: To compare the efficacy of needle retaining after electroacupuncture combined with cognitive training and electroacupuncture combined with cognitive training in the treatment of post-stroke cognitive impairment (PSCI). METHODS: A total of 206 patients with PSCI were randomized into a needle retaining group (103 cases, 9 cases dropped out) and an electroacupuncture group (103 cases, 6 cases dropped out). In addition to the conventional basic medical treatment and the rehabilitation treatment, in the needle retaining group, electroacupuncture at Shenting (GV 24) and Baihui (GV 20) was applied, with continuous wave of 50 Hz in the first 15 min and with disperse-dense wave of 2 Hz/50 Hz in the last 15 min, the needles were continuously retained for 1 h after electroacupuncture, during which cognitive training was adopted; in the electroacupuncture group, cognitive training was performed after the same electric stimulation exerted for 30 min, without additional needles retaining. The treatment was given once a day, 5 times a week for totally 8 weeks in the two groups. Before and after 8-week treatment, the TCM syndrome score was observed; before and after 4,8-week treatment, the scores of mini-mental state examination (MMSE), Montreal cognitive assessment (MoCA) and ability of daily living were observed in the two groups. The clinical efficacy of the two groups was evaluated after 8-week treatment. RESULTS: After 8-week treatment, the TCM syndrome scores were increased compared with those before treatment in both groups (P<0.05); the TCM syndrome score in the needle retaining group was higher than that in the electroacupuncture group (P<0.05).After 4,8-week treatment, the scores of MMSE, MoCA and ability of daily living were increased compared with those before treatment in both groups (P<0.05); MMSE, MoCA scores after 4,8-week treatment and ability of daily living score after 8-week treatment in the needle retaining group were higher than those in the electroacupuncture group (P<0.05). The total effective rate was 90.4% (85/94) in the needle retaining group, which was superior to 82.5% (80/97) in the electroacupuncture group (P<0.05). CONCLUSIONS: Both needle retaining after electroacupuncture combined with cognitive training and electroacupuncture combined with cognitive training can effectively treat PSCI, improve the clinical symptom, cognitive function and ability of daily living in PSCI patients. Needle retaining after electroacupuncture combined with cognitive training has a better therapeutic effect.


Asunto(s)
Terapia por Acupuntura , Disfunción Cognitiva , Electroacupuntura , Accidente Cerebrovascular , Humanos , Entrenamiento Cognitivo , Puntos de Acupuntura , Disfunción Cognitiva/etiología , Disfunción Cognitiva/terapia , Accidente Cerebrovascular/complicaciones , Resultado del Tratamiento
15.
Chem Sci ; 14(22): 5918-5924, 2023 Jun 07.
Artículo en Inglés | MEDLINE | ID: mdl-37293635

RESUMEN

Catalytic enantioselective transformation of alkynes has become a powerful tool for the synthesis of axially chiral molecules. Most of these atroposelective reactions of alkynes rely on transition-metal catalysis, and the organocatalytic approaches are largely limited to special alkynes which act as the precursors of Michael acceptors. Herein, we disclose an organocatalytic atroposelective intramolecular (4 + 2) annulation of enals with ynamides. This method allows the efficient and highly atom-economical preparation of various axially chiral 7-aryl indolines in generally moderate to good yields with good to excellent enantioselectivities. Computational studies were carried out to elucidate the origins of regioselectivity and enantioselectivity. Furthermore, a chiral phosphine ligand derived from the synthesized axially chiral 7-aryl indoline was proven to be potentially applicable to asymmetric catalysis.

16.
Am J Cancer Res ; 13(8): 3482-3499, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37693144

RESUMEN

Angiogenesis is essential for the growth and metastasis of several malignant tumors including colorectal cancer (CRC). The molecular mechanism underlying CRC angiogenesis has not been fully elucidated. Emerging evidence indicates that secreted microRNAs (miRNAs) may mediate the intercellular communication between tumor cells and neighboring endothelial cells to regulate tumor angiogenesis. In addition, exosomes have been shown to carry and deliver miRNAs to regulate angiogenesis. miRNA N-72 is a novel miRNA that plays a regulatory role in the EGF-induced migration of human amnion mesenchymal stem cells. However, the relation between miRNA N-72 and cancer remains unclear. We here found that CRC cells could secrete miRNA N-72. A high miRNA N-72 level was detected in the serum of CRC patients and the cultured CRC cells. Moreover, the CRC cell-secreted miRNA N-72 could promote the migration, tubulogenesis, and permeability of endothelial cells. In addition, the mouse xenograft model was used to verify the facilitating effects of miRNA N-72 on CRC growth, angiogenesis, and metastasis in vivo. Further mechanism analysis revealed that CRC cell-secreted miRNA N-72 could be delivered into endothelial cells via exosomes, which then inhibited cell junctions of endothelial cells by targeting CLDN18 and consequently promoted angiogenesis. Our findings reveal a novel mechanism of CRC angiogenesis and highlight the potential of secreted miRNA N-72 as a therapeutic target and a biomarker for CRC.

17.
J Exp Bot ; 63(7): 2421-35, 2012 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-22275387

RESUMEN

Identification of hypersensitive cell death (HCD) regulators is essential to dissect the molecular mechanisms underlying plant disease resistance. In this study, combined proteomic and RNA interfering (RNAi) analyses were employed to identify genes required for the HCD conferred by the tomato resistance gene Cf-4 and the Cladosporium fulvum avirulence gene Avr4. Forty-nine proteins differentially expressed in the tomato seedlings mounting and those not mounting Cf-4/Avr4-dependent HCD were identified through proteomic analysis. Among them were a variety of defence-related proteins including a cysteine protease, Pip1, an operative target of another C. fulvum effector, Avr2. Additionally, glutathione-mediated antioxidation is a major response to Cf-4/Avr4-dependent HCD. Functional analysis through tobacco rattle virus-induced gene silencing and transient RNAi assays of the chosen 16 differentially expressed proteins revealed that seven genes, which encode Pip1 homologue NbPip1, a SIPK type MAP kinase Nbf4, an asparagine synthetase NbAsn, a trypsin inhibitor LeMir-like protein NbMir, a small GTP-binding protein, a late embryogenesis-like protein, and an ASR4-like protein, were required for Cf-4/Avr4-dependent HCD. Furthermore, the former four genes were essential for Cf-9/Avr9-dependent HCD; NbPip1, NbAsn, and NbMir, but not Nbf4, affected a nonadaptive bacterial pathogen Xanthomonas oryzae pv. oryzae-induced HCD in Nicotiana benthamiana. These data demonstrate that Pip1 and LeMir may play a general role in HCD and plant immunity and that the application of combined proteomic and RNA interfering analyses is an efficient strategy to identify genes required for HCD, disease resistance, and probably other biological processes in plants.


Asunto(s)
Cladosporium/fisiología , Enfermedades de las Plantas/inmunología , Proteínas de Plantas/genética , Interferencia de ARN , Solanum lycopersicum/genética , Muerte Celular , Cladosporium/genética , Cladosporium/inmunología , Resistencia a la Enfermedad , Proteínas Fúngicas/genética , Proteínas Fúngicas/inmunología , Regulación de la Expresión Génica de las Plantas , Solanum lycopersicum/inmunología , Solanum lycopersicum/microbiología , Enfermedades de las Plantas/genética , Enfermedades de las Plantas/microbiología , Proteínas de Plantas/inmunología , Plantas Modificadas Genéticamente/genética , Plantas Modificadas Genéticamente/inmunología , Plantas Modificadas Genéticamente/microbiología , Proteómica , Nicotiana/genética , Nicotiana/inmunología , Nicotiana/microbiología
18.
Zhonghua Gan Zang Bing Za Zhi ; 20(3): 196-200, 2012 Mar.
Artículo en Zh | MEDLINE | ID: mdl-22475139

RESUMEN

OBJECTIVE: To investigate the expression of IGF-1 and IGFBP-3 in nonalcoholic fatty steatosis hepatocyte models induced by oleic acid. METHOD: Nonalcoholic fatty steatosis hepatocyte models induced by oleic acid on immortalized human hepatocyte, Oil red O staining and intracellular triglycerides were detected for observing the situation of IHH cells fatty degeneration. IHH cells were divided into control group, NAFLD group, which the control group cultured in DMEM/F12 medium, NAFLD group were treated with oleic acid, 0.5 mmol/L treatment for 72 h. The expression of mRNA and protein of IGF-1 and IGFBP3 were measured by immunofluorescent staining, Western blot and RT-PCR methods. Between the two groups were compared using the t- test. RESULTS: The steatosis models of the hepatocytes were established successfully with 0.5 mmol/L oleic acid. Lipid droplets were observed through Oil red O staining. The level of hepatocyte TG was increased (275.7+/-27.2) mug/mg from (150.2+/-15.6) mug/mg (t = 21.67, P less than 0.01). Compared with the control group, the mRNA of IGF-1 (0.76+/-0.04 vs 4.82+/-1.51, t = 17.915, P less than 0.01), IGFBP-3 (1.58+/-0.93 vs 5.41+/-1.37, t = 12.893, P less than 0.01) and protein expression of IGF-1 (1.00+/-0.29 vs 2.56+/-0.71, t = 29.17, P less than 0.01), IGFBP-3 (0.65+/-0.36 vs 1.23+/-0.91, t = 32. 12, P less than 0.01) significantly decreased in oleic acid-treated group. The results of immunofluorescence staining also confirm the significantly decreased protein expression of IGF-1 and IGFBP-3 in NAFLD group compared with control group. CONCLUSION: The expression of IGF-1 and IGFBP-3 decreased in nonalcoholic fatty steatosis hepatocyte models, which will provide the experimental basis for the further study of the mechanism of the limited height of some children with non-alcoholic fatty liver disease in clinical.


Asunto(s)
Hígado Graso/metabolismo , Hepatocitos/metabolismo , Proteína 3 de Unión a Factor de Crecimiento Similar a la Insulina/metabolismo , Factor I del Crecimiento Similar a la Insulina/metabolismo , Línea Celular , Hígado Graso/patología , Hepatocitos/patología , Humanos , Proteína 3 de Unión a Factor de Crecimiento Similar a la Insulina/genética , Factor I del Crecimiento Similar a la Insulina/genética , Enfermedad del Hígado Graso no Alcohólico
19.
Eur J Pharm Sci ; 174: 106188, 2022 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-35427741

RESUMEN

Our previous studies have confirmed that luteolin (LU) has a good therapeutic effect on obesity and its complications. However, due to its poor water solubility, the bioavailability is low with limited clinical application. Therefore, the water-soluble solid dispersions (SD) of luteolin were prepared with polyvinylpyrrolidone (PVP) (K10, K40 & K90) by solvent evaporation. The polyvinylpyrrolidone K40 (PVP40) was selected as the ideal carrier to formulate polyvinylpyrrolidone K40-luteolin solid dispersion (PVP40-LU SD), thereby the solubility of luteolin increased about 250 times compared to the pure luteolin, without changing its physical stability and activity. The crystallinity of luteolin was reduced after the formation of solid dispersion, and no strong drug-polymer interactions were observed. This prepared water-soluble luteolin inhibits the polarization of inflammatory macrophages by decreasing the expression of pro-inflammatory cytokine genes interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) in vitro. Moreover, it can improve glucose tolerance and insulin sensitivity quickly after intraperitoneal injection in mice.


Asunto(s)
Resistencia a la Insulina , Povidona , Animales , Rastreo Diferencial de Calorimetría , Inflamación/tratamiento farmacológico , Luteolina/farmacología , Ratones , Solubilidad , Agua
20.
Mar Life Sci Technol ; 4(3): 329-342, 2022 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-37073171

RESUMEN

Mariculture has been one of the fastest-growing global food production sectors over the past three decades. With the congestion of space and deterioration of the environment in coastal regions, offshore aquaculture has gained increasing attention. Atlantic salmon (Salmo salar) and rainbow trout (Oncorhynchus mykiss) are two important aquaculture species and contribute to 6.1% of world aquaculture production of finfish. In the present study, we established species distribution models (SDMs) to identify the potential areas for offshore aquaculture of these two cold-water fish species considering the mesoscale spatio-temporal thermal heterogeneity of the Yellow Sea. The values of the area under the curve (AUC) and the true skill statistic (TSS) showed good model performance. The suitability index (SI), which was used in this study to quantitatively assess potential offshore aquaculture sites, was highly dynamic at the surface water layer. However, high SI values occurred throughout the year at deeper water layers. The potential aquaculture areas for S. salar and O. mykiss in the Yellow Sea were estimated as 52,270 ± 3275 (95% confidence interval, CI) and 146,831 ± 15,023 km2, respectively. Our results highlighted the use of SDMs in identifying potential aquaculture areas based on environmental variables. Considering the thermal heterogeneity of the environment, this study suggested that offshore aquaculture for Atlantic salmon and rainbow trout was feasible in the Yellow Sea by adopting new technologies (e.g., sinking cages into deep water) to avoid damage from high temperatures in summer. Supplementary Information: The online version contains supplementary material available at 10.1007/s42995-022-00141-2.

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