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1.
Biochem Biophys Res Commun ; 671: 246-254, 2023 09 03.
Artículo en Inglés | MEDLINE | ID: mdl-37307708

RESUMEN

Vascular dementia (VaD), the second most common type of dementia, is attributed to lower cerebral blood flow. To date, there is still no available clinical treatment for VaD. The phenolic glucoside gastrodin (GAS) is known for its neuroprotective effects, but the role and mechanisms of action on VD remains unclear. In this study, we aim to investigate the neuroprotective role and underlying mechanisms of GAS on chronic cerebral hypoperfusion (CCH)-mediated VaD rats and hypoxia-induced injury of HT22 cells. The study showed that GAS relieved learning and memory deficits, ameliorated hippocampus histological lesions in VaD rats. Additionally, GAS down-regulated LC3II/I, Beclin-1 levels and up-regulated P62 level in VaD rats and hypoxia-injured HT22 cells. Notably, GAS rescued the phosphorylation of PI3K/AKT pathway-related proteins expression, which regulates autophagy. Mechanistic studies verify that YP-740, a PI3K agonist, significantly resulted in inhibition of excessive autophagy and apoptosis with no significant differences were observed in the YP-740 and GAS co-treatment. Meantime, we found that LY294002, a PI3K inhibitor, substantially abolished GAS-mediated neuroprotection. These results revealed that the effects of GAS on VaD are related to stimulating PI3K/AKT pathway-mediated autophagy, suggesting a potentially beneficial therapeutic strategy for VaD.


Asunto(s)
Disfunción Cognitiva , Demencia Vascular , Fármacos Neuroprotectores , Ratas , Animales , Proteínas Proto-Oncogénicas c-akt/metabolismo , Fosfatidilinositol 3-Quinasas/metabolismo , Demencia Vascular/tratamiento farmacológico , Demencia Vascular/patología , Ratas Sprague-Dawley , Transducción de Señal , Autofagia , Glucósidos/farmacología , Glucósidos/uso terapéutico , Fármacos Neuroprotectores/farmacología , Fármacos Neuroprotectores/uso terapéutico , Disfunción Cognitiva/metabolismo , Hipoxia/tratamiento farmacológico
2.
Langmuir ; 39(47): 16954-16964, 2023 Nov 28.
Artículo en Inglés | MEDLINE | ID: mdl-37967372

RESUMEN

In this research, the degradation of different types of N-containing heterocycle (NHC) contaminants by Cu-OMS-2 via peroxymonosulfate (PMS) activation in an aqueous environment was investigated. First, the effects of different reaction parameters were optimized using benzotriazole (BTR) as the model contaminant, and the optimal reaction conditions were 8 mM PMS, 0.35 g/L Cu-OMS-2, and 30 °C. Nine different types of NHC contaminants were effectively degraded under these reaction conditions, and the degradation efficiencies and the mineralization rates of those NHCs were more than 68 and 46%, respectively. Moreover, the Cu-OMS-2/PMS process presented excellent performance at a wide pH ranging from 3.0 to 11.0 and in the presence of some representative anions (NO3- and SO42-) and dissolved organic matter (fumaric acid). The inhibition sequence of anions on BTR removal during the Cu-OMS-2/PMS process was H2PO4- > HCO3- > Cl- > CO32- > NO3- > SO42-. It was also found that 74.5 and 71.3% BTR degradation rates were achieved in actual water bodies, such as tap water and Yellow River water, respectively. Besides, the Cu-OMS-2 heterogeneous catalyst had excellent stability and reusability, and the degradation rate of BTR was still at 77.0% after 5 cycles. Finally, electron paramagnetic resonance analysis and scavenging tests showed that 1O2 and SO4- • were the primary reactive oxygen species. Accordingly, Cu-OMS-2 nanomaterial was an efficient and sustainable heterogeneous catalyst to activate PMS for the decontamination of BTR in water remediation.

3.
BMC Pulm Med ; 23(1): 238, 2023 Jul 03.
Artículo en Inglés | MEDLINE | ID: mdl-37400818

RESUMEN

BACKGROUND: The risk factors for mortality might differ between patients with acute exacerbation of chronic pulmonary heart disease in plains and plateaus, while there is a lack of evidence. METHOD: Patients diagnosed with cor pulmonale at Qinghai Provincial People's Hospital were retrospectively included between January 2012 and December 2021. The symptoms, physical and laboratory examination findings, and treatments were collected. Based on the survival within 50 days, we divided the patients into survival and death groups. RESULTS: After 1:10 matching according to gender, age, and altitude, 673 patients were included in the study, 69 of whom died. The multivariable Cox proportional hazards analysis showed that NYHA class IV (HR = 2.03, 95%CI: 1.21-3.40, P = 0.007), type II respiratory failure (HR = 3.57, 95%CI: 1.60-7.99, P = 0.002), acid-base imbalance (HR = 1.82, 95%CI: 1.06-3.14, P = 0.031), C-reactive protein (HR = 1.04, 95%CI: 1.01-1.08, P = 0.026), and D-dimer (HR = 1.07, 95%CI: 1.01-1.13, P = 0.014) were risk factors for death in patients with cor pulmonale at high altitude. Among patients living below 2500 m, cardiac injury was a risk factor for death (HR = 2.47, 95%CI: 1.28-4.77, P = 0.007), while no significant association was observed at ≥ 2500 m (P = 0.057). On the contrary, the increase of D-dimer was only a risk factor for the death of patients living 2500 m and above (HR = 1.23, 95% CI: 1.07-1.40, P = 0.003). CONCLUSION: NYHA class IV, type II respiratory failure, acid-base imbalance, and C- reactive protein may increase the risk of death in patients with cor pulmonale. Altitude modified the association between cardiac injury, D-dimer, and death in patients with cor pulmonale.


Asunto(s)
Enfermedad Cardiopulmonar , Factores de Riesgo , Humanos , Masculino , Femenino , Anciano , Anciano de 80 o más Años , Enfermedad Cardiopulmonar/epidemiología
4.
Molecules ; 27(19)2022 Sep 24.
Artículo en Inglés | MEDLINE | ID: mdl-36234847

RESUMEN

Gastrodia elata Bl. has a long edible history and is considered an important functional food raw material. Gastrodin (GAS) is one of the main functional substances in G. elata BI. and can be used as a health care product for the elderly to enhance resistance and delay aging. This study investigated the ameliorative effect and mechanism of GAS on cognitive dysfunction in vascular dementia (VaD) rats, which provides a theoretical basis for development and utilization of functional food. The water maze test shows that GAS improves learning and memory impairment in VaD rats. Meanwhile; GAS significantly decreased the levels of Fe2+ and malondialdehyde (MDA); increased the content of glutathione (GSH); and significantly up-regulated the expression of nuclear factor erythroid 2-related factor 2 (Nrf2) and glutathione peroxidase 4 (GPx4), the key regulatory factors of ferroptosis; while it down-regulated the expression of kelch-like ECH-associated protein (Keap1) and cyclooxygenase 2 (COX2). However, GAS does not directly regulate GPx4 and COX2 to inhibit ferroptosis. Furthermore, compared with GAS alone, GAS combined with Bardoxolone (an agonist of Nrf2) did not further affect the increase in GPx4 levels and decrease in COX2 levels, nor did it further affect the regulation of GAS on the biochemical parameters of ferroptosis in HT22 hypoxia injury. These findings revealed that GAS inhibited ferroptosis in hippocampal neurons by activating the Nrf2/Keap1-GPx4 signaling pathway, suggesting its possible application as a functional food for improving vascular dementia by inhibiting ferroptosis.


Asunto(s)
Disfunción Cognitiva , Demencia Vascular , Ferroptosis , Animales , Alcoholes Bencílicos , Disfunción Cognitiva/tratamiento farmacológico , Disfunción Cognitiva/etiología , Ciclooxigenasa 2/metabolismo , Demencia Vascular/tratamiento farmacológico , Glucósidos , Glutatión/metabolismo , Proteína 1 Asociada A ECH Tipo Kelch/metabolismo , Malondialdehído , Factor 2 Relacionado con NF-E2/metabolismo , Ácido Oleanólico/análogos & derivados , Fosfolípido Hidroperóxido Glutatión Peroxidasa , Ratas , Transducción de Señal
5.
Int J Med Sci ; 18(1): 176-186, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33390786

RESUMEN

Objective: The aim of this study was to observe the liver function recovery of COVID-19 patients after discharge. Patients and Methods: A total of 253 discharged COVID-19 patients in Shenzhen city, China were selected. The clinical characteristics of these patients were assessed. A 2-month follow-up and laboratory hematology test were performed to examine the status of patients' liver function. Results: Patients combined with liver diseases, especially fatty liver, are more likely to progress to severe condition (P<0.05). Patients in severe condition and those with liver diseases have higher rates of liver injuries during hospitalization, characterized by a significant increase in alanine aminotransferase (ALT) and aspartate aminotransferase (AST, P<0.01). The ALT, AST/ALT, gamma-glutamyl transferase (GGT), alkaline phosphatase (ALP), total protein (TP), albumin (ALB), and A/G levels showed significant differences in comparison with the control group (P<0.05, and P<0.001); and the outlier ratio of A/G, ALT, GGT and ALP of patients remained abnormal higher within 14 days after discharge (P<0.001). Liver injuries of COVID-19 patients may be related to the epidemiological characteristics, clinical indexes, basic diseases, symptoms, drug treatment during hospitalization and the complications. Indicators of liver function were correlated with cardiac function, renal function, thyroid function, lipid metabolism, glucose metabolism, immune index, leukocyte, erythrocyte, hemoglobin and platelet related indexes. The outlier ratio of TP, ALB and GLB remained extremely low throughout the follow-up period; the outlier ratio of ALT, AST and GGT decreased below 10% from a high level at 40 days after discharged. However, the outlier ratio of A/G, AST/ALT and ALP remained high during the follow-up period. Conclusions: Abnormal liver function might indicate worse recovery of COVID-19 patients. Changes in liver function should be emphasized during long-term follow-up of COVID-19 patients after hospital discharge; the necessity of employing appropriate interventions for liver function repair should be emphasized.


Asunto(s)
COVID-19/complicaciones , Insuficiencia Hepática/virología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , COVID-19/fisiopatología , Niño , Preescolar , Estudios Transversales , Femenino , Estudios de Seguimiento , Humanos , Lactante , Pruebas de Función Hepática , Masculino , Persona de Mediana Edad , Recuperación de la Función , Adulto Joven
6.
Int J Med Sci ; 18(2): 347-355, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33390803

RESUMEN

Objectives: Research on recovering COVID-19 patients could be helpful for containing the pandemic and developing vaccines, but we still do not know much about the clinical features, recovery process, and antibody reactions during the recovery period. Methods: We retrospectively analysed the epidemiological information, discharge summaries, and laboratory results of 324 patients. Results: In all, 15 (8.62%) patients experienced chest distress/breath shortness, where 8 of the 15 were severely ill. This means severely ill patients need an extended amount of time to recover after discharge; next, 20 (11.49%) patients experienced anxiety and 21 (12.07%) had headache/insomnia and a small fraction of them complained of anosmia/ageusia, indicating that these patients need treatment for mental and psychological health issues. Regarding the re-positive patients, their CT and laboratory test results showed no obvious evidence of illness progress or infectivity but a high anti-SARS-CoV-2 antibody expression. Conclusion: Recovered COVID-19 patients need psychological and physiological care and treatment, re-positivity can occur in any person, but juveniles, females, and patients with mild/moderate existing symptoms have higher rates of re-positivity, While there is no evidence that turning re-positive has an impact on their infectivity, but it still alerted us that we need differentiate them in the following managements.


Asunto(s)
COVID-19/epidemiología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Ageusia , Anosmia , COVID-19/psicología , COVID-19/rehabilitación , COVID-19/virología , Niño , Preescolar , China/epidemiología , Femenino , Estudios de Seguimiento , Humanos , Lactante , Masculino , Persona de Mediana Edad , Recurrencia , Estudios Retrospectivos , SARS-CoV-2/aislamiento & purificación , Adulto Joven
7.
Brain Behav Immun ; 88: 39-43, 2020 08.
Artículo en Inglés | MEDLINE | ID: mdl-32464158

RESUMEN

Self-reported depression has been observed in coronavirus disease-2019 (COVID-19) patients, infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), during discharge from the hospital. However, the cause of this self-reported depression during the convalescent period remains unclear. Here, we report the mental health status of 96 convalescent COVID-19 patients who were surveyed using an online questionnaire at the Shenzhen Samii Medical Center from March 2 to March 12, 2020 in Shenzhen, China. After obtaining their informed consent, we retrospectively analyzed the clinical characteristics of patients, including routine blood and biochemical data. The results suggested that patients with self-reported depression exhibited increased immune response, as indicated by increased white blood cell and neutrophil counts, as well as neutrophil-to-lymphocyte ratio. However, the mechanism linking self-reported depression to these cellular changes needs further study. In conclusion, self-reported depression occurred at an early stage in convalescent COVID-19 patients, and changes in immune function were apparent during short-term follow-up of these patients after discharge. Appropriate psychological interventions are necessary, and changes in immune function should be emphasized during long-term follow up of these patients.


Asunto(s)
Convalecencia/psicología , Infecciones por Coronavirus/psicología , Depresión/psicología , Trastorno Depresivo/psicología , Neumonía Viral/psicología , Adulto , Basófilos , Betacoronavirus , Proteína C-Reactiva/inmunología , COVID-19 , China , Infecciones por Coronavirus/inmunología , Depresión/inmunología , Trastorno Depresivo/inmunología , Eosinófilos , Femenino , Humanos , Interleucina-6/inmunología , Tiempo de Internación , Recuento de Leucocitos , Recuento de Linfocitos , Masculino , Persona de Mediana Edad , Monocitos , Neutrófilos , Pandemias , Neumonía Viral/inmunología , SARS-CoV-2 , Autoinforme , Índice de Severidad de la Enfermedad , Adulto Joven
8.
BMC Gastroenterol ; 20(1): 98, 2020 Apr 09.
Artículo en Inglés | MEDLINE | ID: mdl-32272891

RESUMEN

BACKGROUND: Statin may confer anticancer effect. However, the association between statin and risk of hepatocellular carcinoma (HCC) in patients with hepatitis B virus (HBV) or hepatitis C (HCV) virus infection remains inconsistent according to results of previous studies. A meta-analysis was performed to summarize current evidence. METHODS: Related follow-up studies were obtained by systematic search of PubMed, Cochrane's Library, and Embase databases. A random-effect model was used to for the meta-analysis. Stratified analyses were performed to evaluate the influences of study characteristics on the outcome. RESULTS: Thirteen studies with 519,707 patients were included. Statin use was associated with reduced risk of HCC in these patients (risk ratio [RR]: 0.54, 95% CI: 0.44 to 0.66, p < 0.001; I2 = 86%). Stratified analyses showed that the association between statin use and reduced HCC risk was consistent in patients with HBV or HCV infection, in elder (≥ 50 years) or younger (< 50 years) patients, in males or females, in diabetic or non-diabetic, and in those with or without cirrhosis (all p < 0.05). Moreover, lipophilic statins was associated with a reduced HCC risk (RR: 0.52, p < 0.001), but not for hydrophilic statins (RR: 0.89, p = 0.21). The association was more remarkable in patients with highest statin accumulative dose compared to those with lowest accumulative dose (p = 0.002). CONCLUSIONS: Satin use was independently associated with a reduced risk of HCC in patients with HBV or HCV infection.


Asunto(s)
Carcinoma Hepatocelular/prevención & control , Hepatitis B Crónica/complicaciones , Hepatitis C Crónica/complicaciones , Inhibidores de Hidroximetilglutaril-CoA Reductasas/uso terapéutico , Neoplasias Hepáticas/prevención & control , Carcinoma Hepatocelular/virología , Humanos , Neoplasias Hepáticas/virología , Modelos Estadísticos , Oportunidad Relativa , Factores de Riesgo , Resultado del Tratamiento
9.
IEEE Trans Automat Contr ; 65(7): 1, 2020 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-33746240

RESUMEN

We consider damped stochastic systems in a controlled (time-varying) potential and study their transition between specified Gibbs-equilibria states in finite time. By the second law of thermodynamics, the minimum amount of work needed to transition from one equilibrium state to another is the difference between the Helmholtz free energy of the two states and can only be achieved by a reversible (infinitely slow) process. The minimal gap between the work needed in a finite-time transition and the work during a reversible one, turns out to equal the square of the optimal mass transport (Wasserstein-2) distance between the two end-point distributions times the inverse of the duration needed for the transition. This result, in fact, relates non-equilibrium optimal control strategies (protocols) to gradient flows of entropy functionals via the Jordan-Kinderlehrer-Otto scheme. The purpose of this paper is to introduce ideas and results from the emerging field of stochastic thermodynamics in the setting of classical regulator theory, and to draw connections and derive such fundamental relations from a control perspective in a multivariable setting.

10.
J Cell Biochem ; 120(6): 9820-9830, 2019 06.
Artículo en Inglés | MEDLINE | ID: mdl-30536473

RESUMEN

Plumbagin (PL), an active naphthoquinone compound, has been demonstrated to be a potential anticancer agent. However, the underlying anticancer mechanism is not fully understood. In this study, the human hepatocellular carcinoma (HCC) SMMC-7721 cell line was studied in an in vitro model. The cell proliferation was inhibited by PL in a dose- and time-dependent manner. Electron microscopy, acridine orange staining, and immunofluorescence were used to evaluate autophagosome formation and LC3 protein expression in PL-treated SMMC-7721 cells. Real-time polymerase chain reaction and Western blot showed that PL treatment suppressed the expression of apoptosis and autophagy factors (LC3, Beclin1, Atg7, and Atg5), which are associated with tumor apoptosis and autophagy in SMMC-7721 cells. In the study of in vitro tumor nude mouse models, PL can inhibit tumor growth. Cell apoptosis and autophagy of the transplanted tumors were evaluated by hematoxylin and eosin staining, terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling staining, and Western blot. In addition, in the in vivo studies of HCC cells, we found that pretreatment with the autophagy inhibitor 3-methyladenine blocked the formation of apoptosis induced by PL. In contrast, administration of the apoptosis inhibitor Z-VAD did not affect PL-induced autophagy. Taken together, our findings strongly suggest that PL is a promising drug with significant antitumor activity in HCC.


Asunto(s)
Apoptosis/efectos de los fármacos , Muerte Celular Autofágica/efectos de los fármacos , Carcinoma Hepatocelular , Neoplasias Hepáticas , Naftoquinonas/farmacología , Animales , Carcinoma Hepatocelular/tratamiento farmacológico , Carcinoma Hepatocelular/metabolismo , Carcinoma Hepatocelular/patología , Línea Celular Tumoral , Femenino , Humanos , Neoplasias Hepáticas/tratamiento farmacológico , Neoplasias Hepáticas/metabolismo , Neoplasias Hepáticas/patología , Ratones , Ratones Endogámicos BALB C , Ratones Desnudos , Ensayos Antitumor por Modelo de Xenoinjerto
11.
Anal Chem ; 91(13): 8691-8696, 2019 07 02.
Artículo en Inglés | MEDLINE | ID: mdl-31247728

RESUMEN

Nature endows us with a unique toolbox of highly specific enzymes, while their detection is of great importance in biological processes. The label-free assay based on DNA-templated CuNPs is widely accepted for enzyme assay owning to its simple procedure, fast kinetic, high quantum yield, and large Stokes shift. A challenge in the application of them is the low fluorescent signal stability of DNA-templated CuNPs, whose signal sharply decreases in a few minutes after formation. In this work, a long-term stable nuclease assay is proposed by utilizing the elemental mass spectrometry detection of CuNPs. The high sensitivity was also realized, thanks to a great number of copper isotopes (63Cu and 65Cu) intrinsically incorporated in CuNPs. The experimental conditions, including the length of polyT ssDNA template, the concentration of polyT template, the concentration of Cu2+, the sodium ascorbate concentration, the copper reduction reaction time, and the Exonuclease I (Exo I) digestion reaction time, were investigated in detail. The dynamic range of the Exo I concentration from 0.1 U/mL to 20 U/µL was obtained using inductive coupled plasma mass spectrometry (ICPMS) 63Cu signal, with a detection limit (3σ) of 0.029 U/mL. The ICPMS 63Cu signal remained unchanged for at least 18 days. The spiked-recovery assay in RPMI 1640 cell medium also demonstrated the reliability of the proposed nuclease assay.


Asunto(s)
Técnicas Biosensibles/métodos , Cobre/química , Pruebas de Enzimas/métodos , Exodesoxirribonucleasas/metabolismo , Espectrometría de Masas/métodos , Nanopartículas del Metal/química , Exodesoxirribonucleasas/química , Humanos , Límite de Detección , Reproducibilidad de los Resultados
12.
Clin Chem ; 65(8): 1051-1059, 2019 08.
Artículo en Inglés | MEDLINE | ID: mdl-31010819

RESUMEN

BACKGROUND: Infiltrating ductal carcinoma (IDCA) is the most common form of invasive breast cancer. Immunohistochemistry (IHC) is widely used to analyze estrogen receptor 1 (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER2) that can help classify the tumor to guide the medical treatment. IHC examinations require experienced pathologists to provide interpretations that are subjective, thereby lowering the reproducibility of IHC-based diagnosis. In this study, we developed a 4-plex droplet digital PCR (ddPCR) for the simultaneous and quantitative analyses of estrogen receptor 1 (ESR1), progesterone receptor (PGR), erb-b2 receptor tyrosine kinase 2 (ERBB2), and pumilio RNA binding family member 1 (PUM1) expression levels in formalin-fixed paraffin-embedded (FFPE) samples. METHODS: We evaluated the sensitivity, reproducibility, and linear dynamic range of 4-plex ddPCR. We applied this method to analyze 95 FFPE samples from patients with breast IDCA and assessed the agreement rates between ddPCR and IHC to evaluate its potential in classifying breast cancer subtypes. RESULTS: The limits of quantification (LOQ) were 25, 50, 50, and 50 copies per reaction for ERBB2, ESR1, PGR, and PUM1, respectively. The dynamic ranges of ESR1, PGR, and PUM1 extended over 50-1600 copies per reaction and those of ERBB2 from 25 to 1600 copies per reaction. The concordance correlation coefficients between 4-plex ddPCR and IHC were 96.8%, 91.5%, and 85.1% for ERBB2, ESR1, and PGR, respectively. Receiver operating characteristic curve area under the curve values of 0.991, 0.977, and 0.920 were generated for ERBB2, ESR1, and PGR, respectively. CONCLUSIONS: Evaluation of breast cancer biomarker status by 4-plex ddPCR was highly concordant with IHC in this study.


Asunto(s)
Neoplasias de la Mama/clasificación , Carcinoma Ductal de Mama/clasificación , Reacción en Cadena de la Polimerasa/métodos , Neoplasias de la Mama/química , Carcinoma Ductal de Mama/química , China , Receptor alfa de Estrógeno/genética , Femenino , Humanos , Inmunohistoquímica , ARN/análisis , Proteínas de Unión al ARN/genética , Receptor ErbB-2/genética , Receptores de Progesterona/genética , Reproducibilidad de los Resultados , Sensibilidad y Especificidad
13.
Wei Sheng Yan Jiu ; 47(3): 384-390, 2018 May.
Artículo en Zh | MEDLINE | ID: mdl-30082003

RESUMEN

OBJECTIVE: To establish normal reference values of total and segmental body fat distribution of children aged 6-9 years old in Guangzhou, which can be used for abnormal fat accumulation surveillance. METHODS: A total of 456 children aged 6-9 years old were enrolled between December, 2015 to March, 2017 in Guangzhou, China. Body composition was measured by dual-energy X-ray absorptiometry( DXA). The LMS regression method was used to construct age-and gender-specific smooth percentile curves of total body fat mass( TBFM), percentage of total body fat( % TBF), android fat mass, gynoid fat mass, appendicular fat mass( AFM), percentage android fat, percentage gynoid fat, percentage appendicular fat mass( % AFM) and android/gynoid ratio. The 5th to 85th, 85th and 95th centiles of body fat indexes were applied to define "normal", "overfat", and "obese"status. RESULTS: Linear trend test showed that except for total body fat percentage( % TBF) in girls, total body fat mass( TBFM), segmental body fat mass and % TBF increased significantly with age in both genders. The reference values of TBFM for boys in each age group were 3. 87-6. 04, 3. 72-7. 74, 3. 82-9. 85, 4. 30-13. 35 kg, respectively, and for girls were 3. 86-7. 76, 3. 97-8. 50, 4. 23-9. 46, 4. 78-10. 74 kg, respectively. The corresponding values for the % TBF were 20. 07%-28. 84%, 18. 50%-30. 32%, 17. 93%-31. 97%, 18. 10%-34. 81% in boys, and20. 91%-34. 14%, 20. 64%-34. 60%, 20. 18%-33. 99%, 20. 28%-34. 40% in girls, respectively. In terms of android/gynoid ratio, the values were 0. 62-0. 78, 0. 58-0. 83, 0. 58-0. 88, 0. 57-0. 93 for boys, and 0. 50-0. 76, 0. 54-0. 81, 0. 57-0. 85, 0. 50-0. 82 for girls, respectively. CONCLUSION: The data provided normal reference range for assessing body fat distribution in children aged 6-9 years in Guangzhou, China.


Asunto(s)
Tejido Adiposo , Composición Corporal , Índice de Masa Corporal , Absorciometría de Fotón , Niño , China , Estudios Transversales , Femenino , Humanos , Masculino , Valores de Referencia
14.
IEEE Trans Automat Contr ; 62(9): 4675-4682, 2017 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-28924302

RESUMEN

We consider transportation over a strongly connected, directed graph. The scheduling amounts to selecting transition probabilities for a discrete-time Markov evolution which is designed to be consistent with initial and final marginal constraints on mass transport. We address the situation where initially the mass is concentrated on certain nodes and needs to be transported in a certain time period to another set of nodes, possibly disjoint from the first. The random evolution is selected to be closest to a prior measure on paths in the relative entropy sense-such a construction is known as a Schrödinger bridge between the two given marginals. It may be viewed as an atypical stochastic control problem where the control consists in suitably modifying the prior transition mechanism. The prior can be chosen to incorporate constraints and costs for traversing specific edges of the graph, but it can also be selected to allocate equal probability to all paths of equal length connecting any two nodes (i.e., a uniform distribution on paths). This latter choice for prior transitions relies on the so-called Ruelle-Bowen random walker and gives rise to scheduling that tends to utilize all paths as uniformly as the topology allows. Thus, this Ruelle-Bowen law (𝔐RB) taken as prior, leads to a transportation plan that tends to lessen congestion and ensures a level of robustness. We also show that the distribution 𝔐RB on paths, which attains the maximum entropy rate for the random walker given by the topological entropy, can itself be obtained as the time-homogeneous solution of a maximum entropy problem for measures on paths (also a Schrödinger bridge problem, albeit with prior that is not a probability measure). Finally we show that the paradigm of Schrödinger bridges as a mechanism for scheduling transport on networks can be adapted to graphs that are not strongly connected, as well as to weighted graphs. In the latter case, our approach may be used to design a transportation plan which effectively compromises between robustness and other criteria such as cost. Indeed, we explicitly provide a robust transportation plan which assigns maximum probability to minimum cost paths and therefore compares favourably with Optimal Mass Transportation strategies.

15.
Zhongguo Zhong Yao Za Zhi ; 42(22): 4436-4440, 2017 Nov.
Artículo en Zh | MEDLINE | ID: mdl-29318848

RESUMEN

In this paper, we make a report on new records of medicinal plants in Hubei, which include one newly recorded genera and seven newly recorded species and a newly recorded variety. The newly recorded genera is Anoectochilus and its corresponding species is Anoectochilus roxburghii; These newly recorded species are Euphorbia micractina, Astragalus wulingensis, Blumea megacephala, Potentilla saundersiana, Blumea formosana, Lycoris houdyshelii and Colocasia gigantea ; The newly recorded variety is Neottia puberula var. maculata. Among these species, Anoectochilus roxburghii and N. puberula var. maculata are considered as the second-class protection in our country, A. roxburghii is regarded as Endangered(EN)and Astragalus wulingensis is regarded as Critically Endangered (CN) by IUCN. The report of these newly recorded plants borden the distribution and enrich the plant diversity of Hubei.


Asunto(s)
Asteraceae/clasificación , Planta del Astrágalo/clasificación , Orchidaceae/clasificación , Plantas Medicinales/clasificación , China , Colocasia , Lycoris , Dispersión de las Plantas , Potentilla
16.
Int J Gynecol Pathol ; 35(6): 554-560, 2016 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-27167674

RESUMEN

Well-differentiated neuroendocrine tumors (NET) of the ileum are generally slow-growing tumors with metastatic potential that may cause systemic symptoms from the secretion of serotonin, cortisol, and other biologically active substances. Likewise, steroid cell tumors of the ovary are slow-growing tumors that cause systemic symptoms from the functional production of androgens, estrogens, and other hormones. To the best of our knowledge, synchronous ileal NET and ovarian steroid cell tumors have not been previously reported in the English literature. We present a case of a 59-yr-old woman with 2 primary tumors that were found incidentally: a Stage III (T2N1M0) 1.6 cm well-differentiated NET (NET G2) of the terminal ileum with metastasis to a mesenteric lymph node and a 2.4 cm steroid cell tumor of the left ovary. The patient had suffered from hyperandrogenism for several years before diagnosis of an ovarian steroid cell tumor, but had no symptoms attributable to the NET. From review of the literature, this is the first case description of these 2 primaries arising in the same individual.


Asunto(s)
Hiperandrogenismo/etiología , Neoplasias Intestinales/patología , Neoplasias Primarias Múltiples/patología , Tumores Neuroendocrinos/patología , Neoplasias Ováricas/patología , Tumores de los Cordones Sexuales y Estroma de las Gónadas/patología , Femenino , Humanos , Íleon/patología , Neoplasias Intestinales/complicaciones , Persona de Mediana Edad , Neoplasias Primarias Múltiples/complicaciones , Tumores Neuroendocrinos/complicaciones , Neoplasias Ováricas/complicaciones , Tumores de los Cordones Sexuales y Estroma de las Gónadas/complicaciones
19.
Dig Dis Sci ; 59(6): 1099-107, 2014 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-24390674

RESUMEN

microRNAs constitute a novel class of small, non-coding RNAs that negatively regulate gene expression via translational inhibition or mRNA degradation. Aberrant miRNA expression has been implicated in the initiation, progression, and metastasis of hepatocellular carcinoma (HCC). It is well-documented that miRNAs function as either tumor suppressor genes or oncogenes in the development and progression of HCC. Additionally, substantial evidence suggests that unique miRNA signatures can serve as valuable diagnostic and prognostic biomarkers for HCC. Interestingly, certain subsets of miRNAs have also been identified as potential therapeutic targets for HCC.


Asunto(s)
Biomarcadores/metabolismo , Carcinoma Hepatocelular/diagnóstico , Regulación Neoplásica de la Expresión Génica/fisiología , Neoplasias Hepáticas/diagnóstico , MicroARNs/metabolismo , Humanos , MicroARNs/genética
20.
J Cosmet Dermatol ; 23(7): 2427-2432, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38497418

RESUMEN

BACKGROUND: Intense pulsed light (IPL) is used for the treatment and improvement of various skin issues. However, patients often experience local skin burning and pain after IPL treatment. Cooling and analgesic measures are indispensable. AIMS: To investigate the clinical effect of thermal shock therapy on pain relief and reduction of adverse reactions during IPL therapy. PATIENTS/METHODS: A total of 60 female patients with facial photoaging who received IPL therapy were enrolled in the study. As a comparative split-face study, one side of the face was randomly selected as the control side. The other side was given thermal shock therapy before and after the IPL treatment immediately as analgesic side. The visual analog scale (VAS) was used to evaluate the pain degree of the patients. The telephone follow-ups regarding the occurrence of adverse reactions were conducted respectively on the 2nd day, 7th day, and 1 month after treatment. RESULTS: The VAS score and skin temperature of analgesia side was lower than that of control side at different stages of treatment. In terms of adverse reactions, the incidence of transient facial redness on the analgesic side was lower than that on the control side. Two patients showed slight secondary pigmentation on the control side, and the other patients showed no other adverse reactions on both sides. CONCLUSIONS: Thermal shock therapy assisted IPL therapy can reduce skin temperature during treatment, effectively relieve patients' pain, reduce the occurrence of adverse reactions caused by heat injury, and improve patients' comfort level.


Asunto(s)
Tratamiento de Luz Pulsada Intensa , Dimensión del Dolor , Humanos , Femenino , Tratamiento de Luz Pulsada Intensa/efectos adversos , Tratamiento de Luz Pulsada Intensa/métodos , Persona de Mediana Edad , Adulto , Envejecimiento de la Piel/efectos de la radiación , Temperatura Cutánea , Cara , Manejo del Dolor/métodos , Manejo del Dolor/efectos adversos , Resultado del Tratamiento , Dolor Asociado a Procedimientos Médicos/etiología , Dolor Asociado a Procedimientos Médicos/prevención & control , Dolor Asociado a Procedimientos Médicos/diagnóstico , Dolor Asociado a Procedimientos Médicos/terapia
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