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1.
Medicine (Baltimore) ; 100(34): e27123, 2021 Aug 27.
Artigo em Inglês | MEDLINE | ID: mdl-34449517

RESUMO

ABSTRACT: The specific method and dose of tranexamic acid (TXA) topically applied for intertrochanteric fractures have not been well established. The aim of this study is to investigate the efficacy and safety of TXA topically administered via our protocol for perioperative bleeding management in elderly patients with intertrochanteric fractures who underwent proximal femoral nail anti-rotation (PFNA).A retrospective comparative analysis was performed. The TXA group was composed of 82 patients with topical use of TXA, and the control group was composed of 82 patients without TXA use during the PFNA procedure. Intraoperative, total and hidden amounts of blood loss, drainage volumes, postoperative blood transfusion volumes and complications were compared between the 2 groups.The intraoperative, total and hidden amounts of blood loss and the drainage volumes were significantly lower in the TXA group than in the control group (P = .012, P < .01, P < .01, P = .014, respectively). The volume and rate of blood transfusion in the TXA group were significantly lower than those in the control group (P < .01). There were no significant differences in complications between the 2 groups (P > .05).Topical application of TXA offers an effective and safe option for reducing perioperative blood loss and transfusion in elderly patients with intertrochanteric fractures undergoing PFNA.


Assuntos
Antifibrinolíticos/administração & dosagem , Perda Sanguínea Cirúrgica/prevenção & controle , Fixação Intramedular de Fraturas/métodos , Fraturas do Quadril/cirurgia , Ácido Tranexâmico/administração & dosagem , Administração Tópica , Idoso , Idoso de 80 Anos ou mais , Transfusão de Sangue/estatística & dados numéricos , Feminino , Fixação Intramedular de Fraturas/efeitos adversos , Humanos , Masculino , Complicações Pós-Operatórias/epidemiologia , Estudos Retrospectivos
2.
Int Immunopharmacol ; 90: 107128, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-33191180

RESUMO

Sunitinib is a tyrosine kinase inhibitor for many tumors. Inflammation is one of the most important factors in the development of intestinal tumors. Many inflammation-related factors are regulated by tyrosine kinase receptors. It is reasonable to hypothesize that sunitinib can regulate the development of intestinal tumors by regulating the expression and/or activity of inflammation-related factors. Here, ApcMin/+ male mouse model was used to investigate the effect and mechanism of sunitinib malate against intestinal cancer. Results show that compared to vehicle, after sunitinib malate treatment, overall survival of ApcMin/+ mice was lengthened up to 25 days, with a gain of body weight, reduction of spleen/body weight index, and RBC, WBC and HGC regulated to normal levels of wild type mice, and a number of polyps no less than 1 mm significantly reduced. Meanwhile, in the intestines, the nuclear ß-Catenin protein and c-Myc mRNA were both down-regulated, and Bcl-6 was significantly reduced with Caspase-3 up regulated. Furthermore, inflammation-related factors including IL-6, TNF-α, IL-1α, IL-1ß and IFN-γ were down-regulated at mRNA levels in the intestines. These results suggest that sunitinib malate can significantly improve the survival status and inhibit intestinal tumor development in male ApcMin/+ mice, through inhibiting inflammation-related factors, while suppressing ß-cateinin/c-Myc pathway and re-balancing protein levels of Bcl-6 and Caspase-3.


Assuntos
Anti-Inflamatórios/farmacologia , Anticarcinógenos/farmacologia , Caspase 3/metabolismo , Colo/efeitos dos fármacos , Citocinas/metabolismo , Mediadores da Inflamação/metabolismo , Neoplasias Intestinais/prevenção & controle , Pólipos Intestinais/prevenção & controle , Proteínas Proto-Oncogênicas c-bcl-6/metabolismo , Proteínas Proto-Oncogênicas c-myc/metabolismo , Sunitinibe/farmacologia , beta Catenina/metabolismo , Animais , Colo/enzimologia , Colo/patologia , Citocinas/genética , Regulação da Expressão Gênica , Genes APC , Neoplasias Intestinais/enzimologia , Neoplasias Intestinais/genética , Neoplasias Intestinais/patologia , Pólipos Intestinais/enzimologia , Pólipos Intestinais/genética , Pólipos Intestinais/patologia , Masculino , Camundongos Endogâmicos C57BL , Camundongos Transgênicos , Proteínas Proto-Oncogênicas c-myc/genética , Transdução de Sinais
3.
J Hazard Mater ; 387: 122009, 2020 04 05.
Artigo em Inglês | MEDLINE | ID: mdl-31927258

RESUMO

Explosion caused by zirconium powder was revealed as one of main reasons in accidents happened in reprocessing of spent fuel in nuclear industry. It is urgent to study the explosion severity characteristic of zirconium dust cloud due to the great harm of its explosion. According to the equipment used in the actual post-treatment process in nuclear industry, the 20L cylindrical explosion equipment as a scale model was manufactured as the experimental device. The experimental results showed that Pmax and (dp/dt)max increased at first and then decreased with the increase of concentration. Small zirconium particles produced larger value of explosion severity parameters. Interestingly, initial temperature had no significant effect on Pmax of zirconium powder. However, the value of (dp/dt)max was strongly dependent on the initial temperature. Additionally, the oxidation degree of zirconium dust and temperature generated during explosion were studied by means of oxygen content and crystal form of explosion products. The study found that the particles develop toward spheroidization and its size became smaller, indicating that zirconium particles combustion is a heterogeneous shrinking core process. Under the condition of constant mass, increased number of ZrO2 particles leads to enlarged particle total surface area, increasing the amount of radioactive material released.

4.
Int Immunopharmacol ; 47: 206-211, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28432936

RESUMO

Fumonisin B1 (FB1) is one kind of mycotoxins that has the neurotoxicity, carcinogenicity, hepatotoxicity and immunotoxicity produced by the fungus Fusarium verticillioides, which commonly infects corn and other crops and is harmful to animal and human health upon consumption of FB1-contaminated feed or food. However, the mechanism of immunotoxicity, especially the immunosuppression induced by FB1 is still unclear. The most pivotal cells in the induction of immune responses are dendritic cells (DCs). In this study, we used murine bone marrow-derived dendritic cells (BMDCs) as a model system to elucidate the effect of FB1 on the function of BMDCs through biological methods. We found that FB1 reversed the morphological changes and enhanced the endocytosis of FITC-dextran in LPS-treated BMDCs. At the same time, FB1 decreased the LPS-induced expressions of MHC II, C[1]D80 and CD86 molecules in BMDCs (p<0.05), as well as the T-cell stimulatory capacity of BMDCs (p<0.01). Moreover, the secretions of IL-6, IL-10 and IL-12, but not TNF-α induced by LPS exposure were suppressed by FB1 in a dose dependent (p<0.01). It was considered that the immunosuppressive effects of FB1 were mainly caused by changing the morphology and interfering with the process of antigen uptake, processing and presentation. The results highlighted that FB1 had the capacity to modulate the immune responses of BMDCs.


Assuntos
Células Dendríticas/imunologia , Fumonisinas/metabolismo , Fusariose/imunologia , Fusarium/imunologia , Imunossupressores/metabolismo , Linfócitos T/imunologia , Animais , Apresentação do Antígeno , Antígeno B7-1/metabolismo , Antígeno B7-2/metabolismo , Células da Medula Óssea/imunologia , Diferenciação Celular , Células Cultivadas , Citocinas/metabolismo , Endocitose , Lipopolissacarídeos/imunologia , Ativação Linfocitária , Masculino , Camundongos , Camundongos Endogâmicos C57BL
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