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1.
Environ Pollut ; 346: 123640, 2024 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-38401637

RESUMEN

Pentachlorophenol (PCP) - cadmium (Cd) complex pollution has been identified as a form of persistent soil pollution in south China, exerting detrimental impacts on the indigenous soil bacterial communities. Hence, it is worthwhile to investigate whether and how bacterial populations alter in response to these pollutants. In this study, Escherichia coli was used as a model bacterium. Results showed that PCP exposure caused bacterial cell membrane permeability changes, intracellular ROS elevation, and DNA fragmentation, and triggered apoptosis-like cell death at low exposure concentration and necrosis at high exposure concentration. Cd exposure caused severe oxidative damage and cell necrosis in the tested bacterial strain. The co-exposure to PCP and Cd elevated the ROS level, stimulated the bacterial caspase activity, and induced DNA fragmentation, thereby leading to an apoptosis-like cell death. In conclusion, PCP-Cd complex pollution can cause bacterial population to decrease through apoptosis-like cell death pathway. However, it is worth noting that the subpopulation survives under the complex pollution stress.


Asunto(s)
Pentaclorofenol , Humanos , Pentaclorofenol/toxicidad , Pentaclorofenol/metabolismo , Cadmio/toxicidad , Cadmio/metabolismo , Especies Reactivas de Oxígeno/metabolismo , Apoptosis , Muerte Celular , Necrosis
2.
J Orthop Sci ; 29(2): 681-689, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-36775785

RESUMEN

BACKGROUND: Cognitive behavioral therapy (CBT) is a structured, short-term psychotherapy approach that may have positive effects in terms of relieving postoperative pain. The main objective of this study was to determine the effect of CBT on pain and joint function in patients after total joint arthroplasty. METHODS: We searched 3 electronic databases including randomized controlled studies (RCTs) using CBT as an intervention. The main results of this study were to determine pain intensity by NRS, VAS, WOMAC pain Scale, PCS, and joint function by HHS, OKS, EQ-5D, ROM. Data extraction and quality assessment of included RCTs were independently performed by the authors and date analysis was performed by RevMan V.5.4. RESULTS: Among the 605 studies, 9 RCTS were included in this systematic review and meta-analysis. The study showed that the difference between CBT and usual care groups in PCS (≤3months), NRS, VAS (≤3months) were statistically significant (P < 0.05); the difference between CBT and usual care groups in PCS (≥12months), WOMAC Pain Scale, and VAS (≥12months) were not statistically significant (P > 0.05), indicating that CBT can improve pain in patients after arthroplasty in the early term. In addition, the difference between CBT and usual care groups in OKS (≤3months), HSS, ROM (≤3months), EQ-5D (≤3months) were not statistically significant (P > 0.05); the difference between CBT and usual care groups in EQ-5D (≥12months) were statistically significant (P < 0.05), indicating that the quality of life in patients after total joint arthroplasty were improved with the extension of follow-up time. CONCLUSIONS: This study shows that CBT can relieve pain in patients with total joint arthroplasty in the early postoperative period and improve quality of life to some extent over time.


Asunto(s)
Terapia Cognitivo-Conductual , Humanos , Ensayos Clínicos Controlados Aleatorios como Asunto , Dolor Postoperatorio/terapia , Calidad de Vida , Artroplastia
3.
J Funct Biomater ; 14(9)2023 Aug 23.
Artículo en Inglés | MEDLINE | ID: mdl-37754850

RESUMEN

Chemotherapy (CT) plays an important role in the antitumor process, but the unsatisfactory therapeutic efficacy and the obvious toxic side effects of CT seriously restrict its application. To overcome the limitations of CT, the strategy of chemotherapy enhanced by chemodynamic therapy (CDT) and photothermal therapy (PTT) has been considered a promising approach to improve the anticancer effect. Herein, a novel GSH-activatable Cu2+-Quercetin network (QC) was synthesized via a convenient strategy to load Au nanoparticles (NPs) and DOX, named QCDA, for the synergistic therapy of CT/CDT/PTT. The results showed that QCDA exhibited GSH-sensitive degradation and "cargos" release in cancer cells, and then PTT and CDT caused by Au NPs and Cu+ significantly enhanced the CT effect of DOX and Quercetin on anticancer. More importantly, the PTT and depleted GSH accelerated the Fenton-like ionization process resulting in facilitating the CDT efficiency. Collectively, the multi-mode synergistic strategy of CT/CDT/PTT, which showed an excellent therapeutic effect, maybe a potential therapeutic pathway for anticancer.

4.
Zygote ; 31(6): 557-569, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37737063

RESUMEN

The aim was to explore the implications of follicular output rate (FORT), ovarian sensitivity index (OSI), ovarian response prediction index (ORPI), and follicle-to-oocyte index (FOI) in low-prognosis patients defined by POSEIDON criteria. In total, 4030 fresh in vitro fertilization (IVF) cycles from January 2013 to October 2021 were included in this retrospective cohort analysis and were categorized into four groups based on the POSEIDON criteria. The FORT between Groups 1 and 2 (0.61 ± 0.34 vs. 0.65 ± 0.35, P = 0.081) and Groups 3 and 4 (1.08 ± 0.82 vs. 1.09 ± 0.94, P = 0.899) were similar. The OSI in the order from the highest to the lowest were 3.01 ± 1.46 in Group 1, 2.28 ± 1.09 in Group 2, 1.54 ± 1.04 in Group 3, and 1.34 ± 0.96 in Group 4 (P < 0.001). The trend in the ORPI values was consistent with that in the OSI. FORT, OSI, ORPI, and FOI complemented each other and offered excellent effectiveness in reflecting ovarian reserve and response, but they were not good predictors of clinical pregnancy rate (CPR) from IVF.


Asunto(s)
Reserva Ovárica , Embarazo , Femenino , Humanos , Estudios Retrospectivos , Reserva Ovárica/fisiología , Índice de Embarazo , Fertilización In Vitro , Pronóstico , Inducción de la Ovulación
5.
Arch Gynecol Obstet ; 306(5): 1739-1752, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-35974181

RESUMEN

INTRODUCTION: The purpose of this study was to evaluate whether the blastocyst morphologic grading and the protocol of controlled ovarian stimulation (COS) would influence pregnancy outcomes, aiming to provide guidance when choosing blastocyst transfer. METHODS: The clinical data of 612 patients who received single fresh blastocyst transfer for first cycle, as well as the data of 253 patients who had already delivered were analyzed retrospectively. The patients were divided into two groups according to blastocyst formation time (D5 or D6). The following subgroup analyses were performed: (i) the morphologic grading of blastocyst and (ii) the protocol of COS. RESULTS: We observed that D5 single embryo transfer (SET) were associated with higher clinical pregnancy rate (CPR, 59.04% vs. 31.73%, P < 0.001) and live birth rate (LBR, 43.90% vs. 24.04%, P < 0.001) than D6 SET following fresh cycle. Patients in D5 group experienced more good blastocysts transfer (45.47%vs. 13.46%, P < 0.001) and less poor blastocysts transfer (9.64%vs. 45.19%, P < 0.001) than patients in D6 group. As to early stage and good quality blastocysts, the CPR and LBR were similar between D5 and D6 group. GnRH antagonist protocol had a demonstrable inferiority comparing with the early-follicular-phase long-acting GnRH-agonist long protocol (EFLL) or the mid-luteal-phase long-acting GnRH-agonist long protocol (MLLL) with regard to the CPR and LBR in D6-SET group. CONCLUSIONS: The analysis found that ovarian reserve of patients in D6-SET group was comparatively worse than that of patients in D5-SET group and D6-SET patients represented a subgroup of infertility patients usually having relatively poor embryo quality. The results should be interpreted with caution as the very low numbers in the respective group limited the use of statistical tests and the real significance values.


Asunto(s)
Blastocisto , Transferencia de Embrión , Blastocisto/fisiología , Transferencia de Embrión/métodos , Femenino , Hormona Liberadora de Gonadotropina , Humanos , Embarazo , Índice de Embarazo , Estudios Retrospectivos
6.
Nanotechnology ; 33(12)2021 Dec 24.
Artículo en Inglés | MEDLINE | ID: mdl-34874301

RESUMEN

Cationic polyethylenimine (PEI) is regarded as the 'golden standard' of non-viral gene vectors. However, the superiority of PEI with high positive charge density also induces its major drawback of cytotoxicity, which restricts its application for an effective and safe gene delivery to stem cells. To redress this shortcoming, herein, a magnetic gene complex containing uniform iron oxide nanoparticles (UIONPs), plasmid DNA, and free PEI is prepared through electrostatic interactions for the gene delivery to bone marrow-derived mesenchymal stem cells (BM-MSCs). Results show that UIONPs dramatically promote the gene delivery to BM-MSCs using the assistance of magnetic force. In addition, decreasing the free PEI nitrogen to DNA phosphate (N/P) ratio from 10 to 6 has little adverse impact on the transgene expression levels (over 300 times than that of PEI alone at the N/P ratio of 6) and significantly reduces the cytotoxicity to BM-MSCs. Further investigations confirmed that the decrease of free PEI has little influence on the cellular uptake after applying external magnetic forces, but that the reduced positive charge density decreases the cytotoxicity. The present study demonstrates that magnetic gene delivery not only contributes to the enhanced gene expression but also helps to reduce the required amount of PEI, providing a potential strategy for an efficient and safe gene delivery to stem cells.


Asunto(s)
Técnicas de Transferencia de Gen , Nanopartículas Magnéticas de Óxido de Hierro , Células Madre Mesenquimatosas , Polietileneimina , Animales , Diferenciación Celular/efectos de los fármacos , Supervivencia Celular/efectos de los fármacos , Células Cultivadas , Nanopartículas Magnéticas de Óxido de Hierro/química , Nanopartículas Magnéticas de Óxido de Hierro/toxicidad , Masculino , Células Madre Mesenquimatosas/citología , Células Madre Mesenquimatosas/metabolismo , Polietileneimina/química , Polietileneimina/toxicidad , Ratas , Ratas Sprague-Dawley
7.
J Ovarian Res ; 14(1): 35, 2021 Feb 18.
Artículo en Inglés | MEDLINE | ID: mdl-33602258

RESUMEN

China and the rest of the world are experiencing an outbreak of the 2019 novel coronavirus disease (COVID-19). Patients with cancer are more susceptible to viral infection and are more likely to develop severe complications, as compared to healthy individuals. The growing spread of COVID-19 presents challenges for the clinical care of patients with gynecological malignancies. Ovarian debulking surgery combined with the frequent need for chemotherapy is most likely why ovarian cancer was rated as the gynecologic cancer most affected by COVID-19. Therefore, ovarian cancer presents a particular challenging task. Concerning the ovarian cancer studies with confirmed COVID-19 reported from large-scale general hospitals in Wuhan, we hold that the treatment plan was adjusted appropriately and an individualized remedy was implemented. The recommendations discussed here were developed mainly based on the experience from Wuhan. We advise that the management strategy for ovarian cancer patients should be adjusted in the light of the local epidemic situation and formulated according to the pathological type, tumor stage and the current treatment phase. Online medical service is an effective and convenient communication platform during the pandemic.


Asunto(s)
COVID-19/prevención & control , Neoplasias Ováricas/terapia , SARS-CoV-2/aislamiento & purificación , COVID-19/epidemiología , COVID-19/virología , China/epidemiología , Femenino , Ginecología/métodos , Hospitales Generales , Humanos , Oncología Médica/métodos , Neoplasias Ováricas/diagnóstico , Neoplasias Ováricas/epidemiología , Pandemias , SARS-CoV-2/fisiología
8.
J Biol Chem ; 295(30): 10168-10179, 2020 07 24.
Artículo en Inglés | MEDLINE | ID: mdl-32493774

RESUMEN

Feeding of rapeseed (canola) oil with a high erucic acid concentration is known to cause hepatic steatosis in animals. Mitochondrial fatty acid oxidation plays a central role in liver lipid homeostasis, so it is possible that hepatic metabolism of erucic acid might decrease mitochondrial fatty acid oxidation. However, the precise mechanistic relationship between erucic acid levels and mitochondrial fatty acid oxidation is unclear. Using male Sprague-Dawley rats, along with biochemical and molecular biology approaches, we report here that peroxisomal ß-oxidation of erucic acid stimulates malonyl-CoA formation in the liver and thereby suppresses mitochondrial fatty acid oxidation. Excessive hepatic uptake and peroxisomal ß-oxidation of erucic acid resulted in appreciable peroxisomal release of free acetate, which was then used in the synthesis of cytosolic acetyl-CoA. Peroxisomal metabolism of erucic acid also remarkably increased the cytosolic NADH/NAD+ ratio, suppressed sirtuin 1 (SIRT1) activity, and thereby activated acetyl-CoA carboxylase, which stimulated malonyl-CoA biosynthesis from acetyl-CoA. Chronic feeding of a diet including high-erucic-acid rapeseed oil diminished mitochondrial fatty acid oxidation and caused hepatic steatosis and insulin resistance in the rats. Of note, administration of a specific peroxisomal ß-oxidation inhibitor attenuated these effects. Our findings establish a cross-talk between peroxisomal and mitochondrial fatty acid oxidation. They suggest that peroxisomal oxidation of long-chain fatty acids suppresses mitochondrial fatty acid oxidation by stimulating malonyl-CoA formation, which might play a role in fatty acid-induced hepatic steatosis and related metabolic disorders.


Asunto(s)
Ácidos Erucicos/metabolismo , Hígado Graso/metabolismo , Hígado/metabolismo , Malonil Coenzima A/biosíntesis , Mitocondrias Hepáticas/metabolismo , Peroxisomas/metabolismo , Animales , Hígado Graso/patología , Resistencia a la Insulina , Hígado/patología , Masculino , Mitocondrias Hepáticas/patología , Oxidación-Reducción , Peroxisomas/patología , Ratas , Ratas Sprague-Dawley
10.
J Cell Physiol ; 234(11): 19964-19976, 2019 11.
Artículo en Inglés | MEDLINE | ID: mdl-30989649

RESUMEN

In this study, we aimed to investigate the molecular pathway(s) underlying the effect of metformin (MET) on the expression of matrix metalloproteinase (MMP)-2 and MMP-9. Real-time polymerase chain reaction, Western blot analysis, and gelatin zymography were used to assay the effects of MET on MMP and AMPK signaling pathways. In addition, HTOG cells were treated with miR-29b-3p/a scramble control, H19/a negative control, or MET/PBS to explore possible signaling pathway(s) underlying the inhibitory effect of MET on MMP-2/MMP-9. A rat model of polycystic ovary syndrome (PCOS) was also established to validate the molecular mechanism(s) of MET in vivo. The administration of MET suppressed the expression of MMP-9/MMP-2 and mTOR while increasing the expression of Akt and AMPK, indicating that MET reduced the expression of MMPs via the AMPK signaling pathway. Meanwhile, the H19/miR-29b-3p/MMP-9 and H19/miR-29b-3p/MMP-2 signaling pathways were implicated in PCOS, in which the interactions between H19/miR-29b-3p and MMP-9/MMP-2/miR-29b-3p were confirmed. Furthermore, the administration of MET suppressed the expression of H19 while elevating the expression of miR-29b-3p. And the role of MET in PCOS was also confirmed in vivo via examining the activity of H19 and AMPK signaling pathways in cell or serum samples collected from PCOS rats. MET exhibits a therapeutic effect in the treatment of PCOS by reducing the expression of MMPs.


Asunto(s)
Autofagia , Metaloproteinasa 2 de la Matriz/metabolismo , Metaloproteinasa 9 de la Matriz/metabolismo , Metformina/uso terapéutico , Síndrome del Ovario Poliquístico/tratamiento farmacológico , Síndrome del Ovario Poliquístico/enzimología , ARN Largo no Codificante/metabolismo , Transducción de Señal , Adenilato Quinasa/metabolismo , Animales , Autofagia/efectos de los fármacos , Secuencia de Bases , Línea Celular , Regulación hacia Abajo/efectos de los fármacos , Regulación hacia Abajo/genética , Femenino , Metaloproteinasa 2 de la Matriz/genética , Metaloproteinasa 9 de la Matriz/genética , Metformina/farmacología , Síndrome del Ovario Poliquístico/sangre , Proteínas Proto-Oncogénicas c-akt/metabolismo , Proteínas Proto-Oncogénicas c-met/metabolismo , ARN Largo no Codificante/genética , Ratas Sprague-Dawley , Transducción de Señal/efectos de los fármacos , Serina-Treonina Quinasas TOR/metabolismo
11.
J Cell Physiol ; 234(10): 18308-18316, 2019 08.
Artículo en Inglés | MEDLINE | ID: mdl-30887514

RESUMEN

The expression of annexin A5 (ANXA5) was shown to affect the pathogenesis of recurrent pregnancy loss (RPL). In this study, the effects of two haplotypes, M1 and M2, on the transcription efficiency of ANXA5 promoter were explored. Correlation analysis was used to investigate the association between the single-nucleotide polymorphism haplotypes in ANXA5 promoter and the risk of RPL. And a luciferase reporter assay was carried out to study the effects of haplotypes M1 and M2 on the transcription efficiency of the ANXA5 promoter. To study the association between ANXA5 haplotypes and the risk of RPL, real-time polymerase chain reaction, western blot analysis, and immunohistochemistry assays were conducted to observe the expressions of ANXA5 messenger RNA (mRNA) and protein. Compared to M1 haplotype carriers, M2 haplotype carriers were associated with a higher risk of RPL. Additionally, compared to GATGTC haplotype carriers, GATGGC haplotype carriers were associated with a higher risk of RPL. Compared with RPL cases, the incidences of M2 haplotype were lower in both the population control and parous control cases. Furthermore, M2 carriers showed more significantly decreased activity of ANXA5 promoter compared to the carriers of other haplotypes, indicating that the haplotypes of ANXA5 promoter may be used as a potential biomarker to predict the prognosis of RPL. Moreover, the activity of ANXA5 as well as the mRNA/protein expression of ANXA5 was significantly downregulated in RPL patients, indicating that the M2 haplotype significantly increased the risk of RPL. Therefore, haplotype M2 increased the risk of RPL by inhibiting the expression of ANXA5.


Asunto(s)
Aborto Habitual/genética , Anexina A5/genética , Predisposición Genética a la Enfermedad/genética , Haplotipos/genética , Polimorfismo de Nucleótido Simple/genética , Adulto , Estudios de Casos y Controles , Línea Celular , Femenino , Genotipo , Células Endoteliales de la Vena Umbilical Humana , Humanos , Embarazo , Regiones Promotoras Genéticas/genética , ARN Mensajero/genética , Factores de Riesgo , Adulto Joven
12.
Curr Med Sci ; 38(4): 626-631, 2018 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-30128871

RESUMEN

The clinical outcomes of five groups of infertility patients receiving frozen-thawed, cleavage-stage embryo transfers with exogenous hormone protocols with or without a depot gonadotropin-releasing hormone (GnRH) agonist were assessed. A retrospective cohort analysis was performed on 1003 cycles undergoing frozen-thawed, cleavage-stage embryo transfers from January 1, 2012 to June 31, 2015 in the Reproductive Medicine Center of Wuhan General Hospital of Guangzhou Military Region. Based on the infertility etiologies of the patients, the 1003 cycles were divided into five groups: tubal infertility, polycystic ovary syndrome (PCOS), endometriosis, male infertility, and unexplained infertility. The main outcome was the live birth rate. Two groups were set up based on the intervention: group A was given a GnRH agonist with exogenous estrogen and progesterone, and group B (control group) was given exogenous estrogen and progesterone only. The results showed that the baseline serum hormone levels and basic characteristics of the patients were not significantly different between groups A and B. The live birth rates in groups A and B were 41.67% and 29.29%, respectively (P<0.05). The live birth rates in patients with PCOS in groups A and B were 56.25% and 30.61%,respectively (P<0.05). The clinical pregnancy, implantation and on-going pregnancy rates showed the same trends as the live birth rates between groups A and B. The ectopic pregnancy rate was significantly lower in group A than in group B. We concluded that the live birth rate was higher and other clinical outcomes were more satisfactory with GnRH agonist cotreatment than without GnRH agonist co-treatment for frozen-thawed embryo transfer. The GnRH agonist combined with exogenous estrogen and progesterone worked for all types of infertility tested, especially for women with PCOS.


Asunto(s)
Técnicas de Cultivo de Embriones/métodos , Transferencia de Embrión/métodos , Fármacos para la Fertilidad Femenina/uso terapéutico , Hormona Liberadora de Gonadotropina/agonistas , Infertilidad/terapia , Leuprolida/uso terapéutico , Adulto , Criopreservación/métodos , Transferencia de Embrión/efectos adversos , Estrógenos/sangre , Femenino , Fármacos para la Fertilidad Femenina/administración & dosificación , Fármacos para la Fertilidad Femenina/farmacología , Hormona Liberadora de Gonadotropina/sangre , Humanos , Infertilidad/clasificación , Infertilidad/etiología , Leuprolida/administración & dosificación , Leuprolida/farmacología , Masculino , Embarazo , Resultado del Embarazo , Embarazo Ectópico/epidemiología , Progesterona/sangre
13.
Chemosphere ; 211: 164-172, 2018 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-30071428

RESUMEN

Supercoiling-sensitive quantitative PCR (ss-qPCR) is a sensitive technique to detect DNA damage in cultured animal cells and cultured/clinical human cells in vitro. In this study, we investigated whether the ss-qPCR method can be applied as a sensitive means to detect oxidative DNA damage in unicellular organisms. We used the model cyanobacterium Synechococcus elongatus PCC 7942 as a test organism and H2O2 as an exogenetic oxidative toxicant. Results showed that a significant increase in the plasmid DNA damage of S. elongatus PCC 7942 was induced by H2O2 in a dose- and time-dependent manner. The sensitivity of ss-qPCR in detecting DNA damage of the cyanobacterium was higher than the cell inhibition method (up to 255 times) as calculated from the slopes of fitted curves in the tested sub-toxic concentration range of 1-5 mM H2O2. Ss-qPCR also detected repairable low-intensity DNA damage in the cyanobacterium when DNA repair inhibitors were used. The detection limit of modified ss-qPCR was one tenth of that of previous methods. We also observed that ss-qPCR can be used to detect genomic DNA conformation change of cyanobacterium exposed to H2O2. Thus, this method will provide a powerful technical support for investigating the mechanisms of cyanobacterial DNA damage by environmental factors, especially intracellular reactive oxygen species enhancement-related factors.


Asunto(s)
Cianobacterias/patogenicidad , Daño del ADN/genética , Reacción en Cadena en Tiempo Real de la Polimerasa/métodos , Animales , Humanos , Estrés Oxidativo
14.
Oncotarget ; 9(24): 17141-17148, 2018 Mar 30.
Artículo en Inglés | MEDLINE | ID: mdl-29682211

RESUMEN

In this meta-analysis, we analyzed case-control studies that assessed the prognostic potential of miRNAs in cervical cancer. We comprehensively searched EMBASE and PubMed databases and enrolled seven studies with 445 cervical cancer cases. A fixed effects model was used to calculate pooled hazard ratios (HRs) and associated 95% confidence intervals (95% CIs) from the overall survival (OS) data. Our analysis showed that poor OS in cervical cancer was associated with low miR-125 expression (HR = 1.61, 95% CI: 1.02-2.55, P = 0.042; I2 = 10.1%, P = 0.292; n = 99), low miR-145 expression (HR = 1.70, 95% CI: 1.29-2.24, P < 0.001; I2 = 0%, P = 0.560; n = 193) and high miR-196 expression (HR = 0.28, 95% CI: 0.15-0.52, P < 0.001; I2 = 0%, P = 0.950, n = 197). This makes microRNAs such as miR-125, miR-145 and miR-196 potential prognostic biomarkers in cervical cancer.

15.
Oncotarget ; 8(35): 59609-59617, 2017 Aug 29.
Artículo en Inglés | MEDLINE | ID: mdl-28938664

RESUMEN

This study was designed to identify the prognostic value of early response to neoadjuvant chemotherapy (NACT) for long-term survival of cervical cancer patients. We searched Pubmed and EMBASE for studies published through July 2016 on outcomes of cervical patients that received NACT. Eight studies involving 825 cervical cancer patients were ultimately included in our meta-analysis. We pooled the hazard ratios (HR) according to random-effects models and used funnel plots with Egger's and Begg's tests to explore potential publication bias. The HR between early response and 1-year overall survival (OS) was 3.60 (95% CI 1.93-6.72; I2 = 0). Similar results were found in the analysis of 3-year OS (HR 3.34; 95% CI 2.28-4.90; I2 = 0) and 5-year OS (HR 3.44; 95% CI 2.40-4.94; I2 = 0). Sensitivity analysis showed that all of the pooled results were robust, and all logHRs had confidence limits > 0. Our findings indicate that early response is associated with long-term survival, and responders achieved a higher survival rate than non-responders.

16.
Sci Rep ; 6: 27568, 2016 06 09.
Artículo en Inglés | MEDLINE | ID: mdl-27279023

RESUMEN

This study was designed to develop a risk model for disease recurrence among cervical cancer patients who underwent neoadjuvant chemotherapy and radical surgery. Data for 853 patients were obtained from a retrospective study and used to train the model, and then data for 447 patients from a prospective cohort study were employed to validate the model. The Cox regression model was used for calculating the coefficients of the risk factors. According to risk scores, patients were classified into high-, intermediate-, and low-risk groups. There were 49 (49/144, 34%) recurrences observed in the high-risk group (with a risk score ≥ 2.65), compared with 3 (3/142, 2%) recurrences in the low-risk group (with a risk score < 0.90). Disease-free survival (DFS) was significantly different (log-rank p < 0.001) among the three risk groups; the risk model also revealed a significant increase in the accuracy of predicting 5-year DFS with the area under the ROC curve (AUC = 0.754 for risk model vs 0.679 for FIGO stage system); the risk model was also validated with data from the prospective study (log-rank p < 0.001, AUC = 0.766). Both high-risk and intermediate-risk patients can be more effectively identified by this risk model.


Asunto(s)
Antineoplásicos/uso terapéutico , Terapia Neoadyuvante , Neoplasias del Cuello Uterino/tratamiento farmacológico , Adulto , Área Bajo la Curva , Quimioterapia Adyuvante , Supervivencia sin Enfermedad , Femenino , Estudios de Seguimiento , Humanos , Persona de Mediana Edad , Recurrencia Local de Neoplasia , Pronóstico , Modelos de Riesgos Proporcionales , Estudios Prospectivos , Curva ROC , Estudios Retrospectivos , Riesgo , Factores de Tiempo , Neoplasias del Cuello Uterino/diagnóstico
17.
Sci Rep ; 6: 28278, 2016 06 21.
Artículo en Inglés | MEDLINE | ID: mdl-27325186

RESUMEN

The role of pathological response in long-term outcome is still unclear in cervical cancer patients treated with neoadjuvant chemotherapy (NACT) in China. This study aimed to investigate the effect of optimal pathologic response (OPR) on survival in the patients treated with NACT and radical hysterectomy. First, 853 patients with stage IB2-IIB cervical cancer were included in a retrospective analysis; a Cox proportional hazards model was used to investigate the relationship between pathological response and disease-free survival (DFS). In the retrospective database, 64 (7.5%) patients were found to have achieved an OPR (residual disease <3 mm stromal invasion); in the multivariate Cox model, the risk of death was much greater in the non-OPR group than in the OPR group (HR, 2.61; 95%CI, 1.06 to 6.45; P = 0.037). Next, the role of OPR was also evaluated in a prospective cohort of 603 patients with cervical cancer. In the prospective cohort, 56 (9.3%) patients were found to have achieved an OPR; the log-rank tests showed that the risk of recurrence was higher in the non-OPR patients than in the OPR group (P = 0.05). After combined analysis, OPR in cervical cancer was found to be an independent prognostic factor for DFS.


Asunto(s)
Antineoplásicos/uso terapéutico , Neoplasias de Células Escamosas/tratamiento farmacológico , Compuestos de Platino/uso terapéutico , Neoplasias del Cuello Uterino/tratamiento farmacológico , Adulto , Anciano , Quimioterapia Adyuvante , Supervivencia sin Enfermedad , Femenino , Humanos , Histerectomía , Estimación de Kaplan-Meier , Metástasis Linfática , Persona de Mediana Edad , Terapia Neoadyuvante , Estadificación de Neoplasias , Neoplasias de Células Escamosas/mortalidad , Neoplasias de Células Escamosas/secundario , Modelos de Riesgos Proporcionales , Estudios Prospectivos , Estudios Retrospectivos , Resultado del Tratamiento , Neoplasias del Cuello Uterino/mortalidad , Neoplasias del Cuello Uterino/patología , Adulto Joven
18.
Onco Targets Ther ; 9: 3171-9, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27313462

RESUMEN

The purpose of this study was to identify risk factors in patients with surgically treated node-positive IB1-IIB cervical cancer and to establish a risk model for disease-free survival (DFS) and overall survival (OS). A total of 170 patients who underwent radical hysterectomy and bilateral pelvic lymphadenectomy as primary treatment for node-positive International Federation of Gynaecology and Obstetrics (FIGO) stage IB1-IIB cervical cancer from January 2002 to December 2008 were retrospectively analyzed. Five published risk models were evaluated in this population. The variables, including common iliac lymph node metastasis and parametrial invasion, were independent predictors of outcome in a multivariate analysis using a Cox regression model. Three distinct prognostic groups (low, intermediate, and high risk) were defined using these variables. Five-year DFS rates for the low-, intermediate-, and high-risk groups were 73.7%, 60.0%, and 25.0%, respectively (P<0.001), and 5-year OS rates were 81.9%, 42.8%, and 25.0%, respectively (P<0.001). The risk model derived in this study provides a novel means for assessing prognosis of patients with node-positive stage IB1-IIB cervical cancer. Future study will focus on external validation of the model and refinement of the risk scoring systems by adding new biologic markers.

19.
Nanomedicine ; 12(2): 421-30, 2016 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-26711963

RESUMEN

α-Mangostin (α-M) is a polyphenolic xanthone that protects and improves the survival of cerebral cortical neurons against Aß oligomer-induced toxicity in rats. α-M is a potential candidate as a treatment for Alzheimer's disease (AD). However, the efficacy was limited by the poor penetration of the drug through the blood-brain barrier (BBB). In this study, we modified the α-M liposome with transferrin (Tf) and investigated the intracellular distribution of liposomes in bEnd3 cells. In addition, the transport of α-M across the BBB in the Tf(α-M) liposome group was examined. In vitro studies demonstrated that the Tf(α-M) liposome could cross the BBB in the form of an integrated liposome. Results of the in vivo studies on the α-M distribution in the brain demonstrated that the Tf(α-M) liposome improved the brain delivery of α-M. These results indicated that the Tf liposome is a potential carrier of α-M against AD. FROM THE CLINICAL EDITOR: The use of α-Mangostin (α-M) as a potential agent to treat Alzheimer's disease (AD) has been reported. However, its use is limited by the poor penetration through the blood brain barrier. The delivery of this agent by transferrin-modified liposomes was investigated by the authors in this study. The positive results could point to a better drug delivery system for brain targeting.


Asunto(s)
Barrera Hematoencefálica/metabolismo , Liposomas/metabolismo , Fármacos Neuroprotectores/administración & dosificación , Fármacos Neuroprotectores/farmacocinética , Transferrina/metabolismo , Xantonas/administración & dosificación , Xantonas/farmacocinética , Enfermedad de Alzheimer/tratamiento farmacológico , Animales , Encéfalo/metabolismo , Línea Celular , Sistemas de Liberación de Medicamentos , Garcinia mangostana/química , Ratones , Fármacos Neuroprotectores/química , Ratas Sprague-Dawley , Xantonas/química
20.
Int J Clin Exp Med ; 8(9): 15018-29, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26628986

RESUMEN

OBJECTIVE: This study was designed to evaluate the response, toxicity and survival of taxanes plus platinum (TP) and CPT-11plus platinum (CP) as neoadjuvant chemotherapies with previously untreated cervical cancer, and to identify prognostic risk factors in these patients. METHODS: A cohort study was performed to evaluate the result of TP and CP regimes in the treatment of cervical cancer patients. RESULTS: The study included 567 patients with locally advanced cervical cancer (LACC) staged as FIGO IB-IIB in our clinical departments. Clinical response was found in 76.1% and 78% of patients in the TP and CP arms, respectively, and no treatment-related deaths were reported. During the follow-up period, disease-free survival (DFS) and overall survival (OS) for the TP and CP arms were not different (P = 0.384 for DFS, P = 0.800 for OS). The CP regime showed higher survival rate for endophytic growth style (P = 0.013 for DFS, P = 0.027 for OS). The CP regime also showed higher DFS and OS for G2 tumor (P = 0.027 for DFS, P = 0.032 for OS). In multivariate cox's proportional hazards regression model, the average death rates were much greater in the non-responder group (HR, 2.68), in the older (> 44 years) group (HR, 2.51), and in the FIGO stage II b patients (HR, 2.84). CONCLUSIONS: The CP regime showed higher survival rate for endophytic growth style or G2 tumor. Clinical response, age and FIGO stage were independent prognostic risk factors in this study for both DFS and OS.

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