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1.
Plants (Basel) ; 13(3)2024 Jan 31.
Artigo em Inglês | MEDLINE | ID: mdl-38337959

RESUMO

Tea is a popular beverage with characteristic functional and flavor qualities, known to be rich in bioactive metabolites such as tea polyphenols and theanine. Recently, tea varieties with variations in leaf color have been widely used in agriculture production due to their potential advantages in terms of tea quality. Numerous studies have used genome, transcriptome, metabolome, proteome, and lipidome methods to uncover the causes of leaf color variations and investigate their impacts on the accumulation of crucial bioactive metabolites in tea plants. Through a comprehensive review of various omics investigations, we note that decreased expression levels of critical genes in the biosynthesis of chlorophyll and carotenoids, activated chlorophyll degradation, and an impaired photosynthetic chain function are related to the chlorina phenotype in tea plants. For purple-leaf tea, increased expression levels of late biosynthetic genes in the flavonoid synthesis pathway and anthocyanin transport genes are the major and common causes of purple coloration. We have also summarized the influence of leaf color variation on amino acid, polyphenol, and lipid contents and put forward possible causes of these metabolic changes. Finally, this review further proposes the research demands in this field in the future.

2.
Aesthetic Plast Surg ; 48(4): 747-751, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-37775575

RESUMO

BACKGROUND: Hyaluronic acid (HA) filler-induced vascular embolism that threatens skin integrity is an urgent situation. There is increasing evidence that percutaneous intra-arterial hyaluronidase injection is an effective therapeutic technique for it. However, until now, there is a lack of a unifying protocol about the technique. OBJECTIVES: This study aims to provide a conclusion of percutaneous intra-arterial hyaluronidase injection along with adjunctive measures on the treatment of occlusions precipitated by HA-based filler and develop a stepwise treatment protocol. METHODS: We searched PubMed for peer-reviewed studies, consensus statements, case series, and case reports using a variety of keywords. RESULTS: High-dose, pulsed hyaluronidase is the mainstay for the treatment of HA filler-induced embolism, but percutaneous intra-arterial hyaluronidase injection is a more effective technique. Until now, hyaluronidase is injected into three arteries percutaneously, including facial artery, supratrochlear artery, and superficial temporal artery. Furthermore, the adjunctive measures that may optimize clearance of an occlusion and/or skin barrier repair such as the use of image guidance and CGF should be considered. CONCLUSION: Vascular occlusions that threaten skin integrity are an urgent matter which requires accurate diagnosis and effective intervention. Percutaneous intra-arterial hyaluronidase injection along with adjunctive measures performed in a stepwise manner is key to an optimal outcome. NO LEVEL ASSIGNED: This journal requires that authors assign a level of evidence to each submission to which Evidence-Based Medicine rankings are applicable. This excludes Review Articles, Book Reviews, and manuscripts that concern Basic Science, Animal Studies, Cadaver Studies, and Experimental Studies. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .


Assuntos
Preenchedores Dérmicos , Embolia , Animais , Preenchedores Dérmicos/efeitos adversos , Ácido Hialurônico , Hialuronoglucosaminidase , Artéria Oftálmica , Embolia/induzido quimicamente , Embolia/tratamento farmacológico , Protocolos Clínicos
3.
Nat Prod Res ; 38(1): 103-111, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-35929965

RESUMO

ABSTACTA chemical investigation of the endophyte Penicillium sp. Nb 19, isolated from leaves of the traditionally medical plant Baphicacanthus cusia (Nees) Bremek., yielded one new indole diterpenoid, 7-methoxy-13-dehydroxypaxilline (1) together with seven known metabolites (2-8). The obtained structure of compound 1 was elucidated by its spectroscopic data. In addition, the absolute configuration of compound 6 was confirmed by ECD for the first time. Compounds 1-6 were evaluated for antitumor activity against MCF-7, HepG2, and HCCC-9810 cell lines.


Assuntos
Diterpenos , Penicillium , Nióbio/metabolismo , Diterpenos/química , Fungos , Indóis/química , Penicillium/química , Estrutura Molecular
4.
Medicine (Baltimore) ; 102(50): e36173, 2023 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-38115362

RESUMO

RATIONALE: Breast cancer represents a prevalent malignancy that primarily impacts women, with pronounced consequences on their overarching health. The major therapeutic approach, encompassing surgical procedures, can often culminate in mastectomy, potentially inciting psychological turmoil and disorders. PATIENT CONCERNS: A patient was admitted to our facility on May 5, 2023, precipitated by the discovery of bilateral breast masses during a routine physical examination conducted 3 days before admission. DIAGNOSIS: The breasts were symmetric, with the right nipple inverted and a palpable mass in the upper outer quadrant of the right breast, measuring approximately 5 cm × 4 cm. The mass was firm with indistinct borders, relatively regular morphology, poor mobility, and no tenderness. Outpatient color Doppler ultrasound revealed heterogeneous echogenicity in the right breast, classified as Breast Imaging Reporting and Data System (BI-RADS) category 0, along with multiple ductal dilatations. The left breast exhibited a hypoechoic area (BI-RADS 3), indicative of proliferative changes. Radiographic mammography confirmed diffuse changes in the right breast (BI-RADS 0) and proliferative signs in the left breast (BI-RADS 2). Biopsy results reveal significant atypical ductal hyperplasia consistent with intermediate-grade ductal carcinoma in situ. This patient was diagnosed as ductal carcinoma in situ of the right breast (cTisN0M0 and Stage 0), accompanied by a left breast mass. INTERVENTIONS: On May 15, 2023, the patient was readmitted for further surgical intervention. Following relevant auxiliary examinations, the patient underwent nipple-areola complex-sparing radical mastectomy for the right breast, sentinel lymph node biopsy in the right axillary area, prosthesis-based breast reconstruction for the right breast, and microrotatotomy of the left breast mass on the left side on May 17. OUTCOMES: The patient made a successful recovery under scrupulous perioperative supervision and was discharged 7 days post-surgery. LESSONS: The axillary approach for endoscopic mammary gland excision and immediate implant reconstruction permits patients to preserve the esthetics of the female form while undergoing conventional medical treatment. This methodology considerably enhances the psychophysical health of the patients, thereby marking it as an advantageous practice worthy of broad dissemination in the medical community.


Assuntos
Neoplasias da Mama , Carcinoma Ductal de Mama , Carcinoma Intraductal não Infiltrante , Mamoplastia , Feminino , Humanos , Carcinoma Intraductal não Infiltrante/diagnóstico por imagem , Carcinoma Intraductal não Infiltrante/cirurgia , Carcinoma Intraductal não Infiltrante/patologia , Neoplasias da Mama/cirurgia , Neoplasias da Mama/patologia , Mamilos/cirurgia , Mamilos/patologia , Mastectomia/métodos , Seguimentos , Mamoplastia/métodos , Biópsia de Linfonodo Sentinela , Assistência Perioperatória , Carcinoma Ductal de Mama/diagnóstico por imagem , Carcinoma Ductal de Mama/cirurgia , Carcinoma Ductal de Mama/patologia , Estudos Retrospectivos
5.
Biochem Pharmacol ; 217: 115856, 2023 11.
Artigo em Inglês | MEDLINE | ID: mdl-37838274

RESUMO

Maintaining redox homeostasis is an essential feature of cancer cells, and disrupting this homeostasis to cause oxidative stress and induce cell death is an important strategy in cancer therapy. M4IDP, a zoledronic acid derivative, can cause the death of human colorectal cancer cells by increasing the level of intracellular reactive oxygen species (ROS). However, its potential molecular mechanism is unclear. Our in vitro studies showed that treatment with M4IDP promoted oxidative stress in HCT116 cells, as measured by the decreased ratios of GSH/GSSG and NADPH/NADP+ and increased level of MDA. M4IDP could cause the decrease of GSH content, the increase of GSSG content, the decrease of NADPH content and pentose phosphate pathway flux, the downregulation of G6PD expression, the upregulation of unprenylated Rap1A and total expression of RhoA and CDC42. The increase of ROS and cytotoxicity induced by M4IDP could be reversed by the supplementation of NADPH, the overexpression of G6PD and the supplementation of GGOH. In vivo studies showed that M4IDP inhibited tumor growth in the human colorectal cancer xenograft mouse model, which was accompanied with a decreased [18F]FDG uptake. Collectively, these results provide evidence that M4IDP can promote oxidation in colon cancer cells by inhibiting mevalonate pathway and pentose phosphate pathway and produce therapeutic effect. This study revealed for the first time a possible mechanism of bisphosphonate-induced increase of ROS in malignant tumor cells. This is helpful for the development of new molecular therapeutic targets and can provide new ideas for the combined therapy of bisphosphonates in tumors.


Assuntos
Neoplasias do Colo , Ácido Mevalônico , Humanos , Camundongos , Animais , Espécies Reativas de Oxigênio/metabolismo , Dissulfeto de Glutationa/metabolismo , Dissulfeto de Glutationa/farmacologia , Ácido Mevalônico/farmacologia , NADP/metabolismo , NADP/farmacologia , Via de Pentose Fosfato/fisiologia , Estresse Oxidativo , Neoplasias do Colo/tratamento farmacológico
6.
Front Pharmacol ; 14: 1123387, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37229259

RESUMO

Gut microbiota affects the gut-brain axis; hence, the modulation of the microbiota has been proposed as a potential therapeutic strategy for cerebral ischemia/reperfusion injury (CIRI). However, the role and mechanism of the gut microbiota in regulating microglial polarization during CIRI remain poorly understood. Herein, using a middle cerebral artery occlusion and reperfusion (MCAO/R) rat model, we evaluated changes in the gut microbiota after CIRI and the potential effects of fecal microbiota transplant (FMT) on the brain. Rats underwent either MCAO/R or sham surgery, and then they received FMT (started 3 days later; continued for 10 days). 2,3,5-Triphenyltetrazolium chloride staining, neurological outcome scale, and Fluoro-Jade C staining showed that MCAO/R induced cerebral infarction, neurological deficits, and neuronal degeneration. In addition, immunohistochemistry or real-time PCR assay showed increased expression levels of M1-macrophage markers-TNF-α, IL-1ß, IL-6, and iNOS-in the rats following MCAO/R. Our finding suggests that microglial M1 polarization is involved in CIRI. 16 S ribosomal RNA gene sequencing data revealed an imbalance in the gut microbiota of MCAO/R animals. In contrast, FMT reversed this MCAO/R-induced imbalance in the gut microbiota and ameliorated nerve injury. In addition, FMT prevented the upregulation in the ERK and NF-κB pathways, which reversed the M2-to-M1 microglial shift 10 days after MCAO/R injury in rats. Our primary data showed that the modulation of the gut microbiota can attenuate CIRI in rats by inhibiting microglial M1 polarization through the ERK and NF-κB pathways. However, an understanding of the underlying mechanism requires further study.

7.
Biomed Environ Sci ; 35(7): 657-662, 2022 Jul 20.
Artigo em Inglês | MEDLINE | ID: mdl-35945182

RESUMO

This study aimed to investigate the neurotoxicity induced by trichloroacetic acid (TCA) and the possible protective mechanisms of boron (B). Mouse BV2 cells were treated with TCA (0, 0.39, 0.78, 1.56, 3.12, 6.25, or 12.5 mmol/L) and B (0, 7.8, 15.6, 31.25, 62.5, 125, 500, or 1,000 mmol/L) for 3 h and 24 h, respectively. Then, reactive oxygen species, and supernatant proinflammatory cytokine and protein levels were analyzed after 24 h of combined exposure. Beyond the dose-dependent decrease in the cellular viability, it clearly increased after B supplementation ( P < 0.05). Moreover, B decreased oxidative damage, and significantly down-regulated IL-6 levels and up-regulated TNF-ß production ( P < 0.05). B also decreased apoptosis via the p53 pathway. The present findings indicated that TCA may induce oxidative damage, whereas B mitigates these adverse effects by decreasing cell apoptosis.


Assuntos
Boro , Ácido Tricloroacético , Animais , Apoptose , Boro/metabolismo , Boro/toxicidade , Camundongos , Estresse Oxidativo , Espécies Reativas de Oxigênio/metabolismo , Ácido Tricloroacético/toxicidade , Proteína Supressora de Tumor p53/metabolismo
8.
Aesthet Surg J ; 42(6): 649-655, 2022 05 18.
Artigo em Inglês | MEDLINE | ID: mdl-34958671

RESUMO

BACKGROUND: Vascular embolism is a serious complication of hyaluronic acid (HA) filler cosmetic injection, and hyaluronidase injection has been proposed as the treatment. Until now, there has been a lack of adequate clinical evidence regarding the benefits of treatment for HA filler-induced vascular embolism by percutaneous facial or supratrochlear arterial hyaluronidase injection. OBJECTIVES: The authors sough to evaluate the efficacy of percutaneous facial or supratrochlear arterial hyaluronidase injection as a rescue treatment for HA filler-induced vascular embolism. METHODS: We included 17 patients with vascular embolism after facial HA filler injection. Intraarterial injection of 1500 units hyaluronidase was performed via facial artery for 13 cases with skin necrosis and via supratrochlear arterial for 4 cases with severe ptosis and skin necrosis but no visual impairment. Simultaneously, general symptomatic treatment and nutritional therapy were performed. RESULTS: After hyaluronidase injection, facial skin necrosis in all cases was restored and ptosis in the 4 cases was also significantly relieved. Patients were subsequently followed-up for 1 month to 1 year. The skin necrosis in 16 patients completely healed, and only 1 patient had small superficial scars. CONCLUSIONS: It is effective to alleviate skin necrosis and ptosis resulting from HA filler embolism via percutaneous facial or supratrochlear arterial hyaluronidase injection.


Assuntos
Técnicas Cosméticas , Preenchedores Dérmicos , Embolia , Artérias , Técnicas Cosméticas/efeitos adversos , Embolia/tratamento farmacológico , Embolia/etiologia , Humanos , Ácido Hialurônico , Hialuronoglucosaminidase , Injeções Intra-Arteriais , Necrose
9.
Turk J Haematol ; 38(2): 126-137, 2021 06 01.
Artigo em Inglês | MEDLINE | ID: mdl-33535731

RESUMO

Objective: Extranodal NK/T-cell lymphoma (ENKL) is aggressive and resistant to chemotherapy and radiotherapy. Allogeneic hematopoietic stem cell transplantation (allo-HSCT) is a potentially curative treatment for high-risk lymphomas owing to its associated graft-versus-lymphoma (GVL) effect. However, its application to ENKL is limited. We aim to summarize the characteristics of allo-HSCT for ENKL and, more importantly, evaluate whether allo-HSCT could offer any benefits for ENKL. Materials and Methods: A systematic review and data analysis were performed to evaluate the performance of allo-HSCT in the treatment of ENKL using studies obtained from PubMed, Medline, and Embase from January 2000 to December 2019 in the English language. Results: A total of 136 cases from 17 eligible publications were included in this study. It was found that after allo-HSCT, with an average follow-up time of 34 months (range: 1-121 months), 37.5% (52) of 136 patients had acute graft-versus-host disease (GVHD) and 31.6% (43) had chronic GVHD. Furthermore, 35.3% (48) of the patients were reported to have relapsed, but 2 of those relapsed only locally and achieved complete remission (CR) again with additional irradiation, chemotherapy, and donor lymphocyte infusions for one and rapid tapering and discontinuation of cyclosporine for the other, earning more than one year of extra survival. Finally, of the 136 patients, 51.5% (70) died because of primary disease progression (42.9%), infection (20.0%), GVHD (11.4%), organ failure (7.1%), hemorrhage (4.3%), and other causes (not specified/unknown) (14.3%). Conclusion: Allo-HSCT may be a treatment option for advanced or relapsed/refractory ENKL, but its role still requires more rigorous future studies.


Assuntos
Doença Enxerto-Hospedeiro/etiologia , Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Linfoma Extranodal de Células T-NK/patologia , Linfoma Extranodal de Células T-NK/terapia , Transplante Homólogo/efeitos adversos , Quimiorradioterapia Adjuvante/métodos , Terapia Combinada/métodos , Progressão da Doença , Intervalo Livre de Doença , Feminino , Seguimentos , Doença Enxerto-Hospedeiro/epidemiologia , Transplante de Células-Tronco Hematopoéticas/métodos , Hemorragia/epidemiologia , Humanos , Infecções/epidemiologia , Linfoma Extranodal de Células T-NK/tratamento farmacológico , Linfoma Extranodal de Células T-NK/radioterapia , Masculino , Insuficiência de Múltiplos Órgãos/epidemiologia , Estadiamento de Neoplasias/métodos , Recidiva , Indução de Remissão
10.
Medicine (Baltimore) ; 99(10): e19450, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32150101

RESUMO

RATIONALE: Myelodysplastic syndrome (MDS) can be complicated with Crohn disease (CD). Irritable bowel disease (IBD) associated with MDS has already been reported in the past; however, hematopoietic stem cell transplantation (HSCT) is rarely performed. Herein, we report a case of CD with MDS for HSCT. PATIENT CONCERNS: A 41-year-old man was hospitalized due to abdominal pain and intermittent fever for 40 days. Two years later, he was readmitted due to abdominal pain and diarrhea with fever for 10 days. DIAGNOSIS: Symptoms, laboratory examinations, and imaging findings of the patient were indicative of CD complicated with MDS. INTERVENTIONS: An allogeneic HSCT was performed. OUTCOMES: He died of severe lung infection 125 days post-transplantation. LESSONS: The number of cases of CD combined with MDS remains insufficient, and no consensus opinions are available to date. Hence, HSCT is a very potential treatment method. Additional experiences are needed to determine its effectiveness.


Assuntos
Doença de Crohn/terapia , Síndromes Mielodisplásicas/terapia , Dor Abdominal , Adulto , Doença de Crohn/complicações , Evolução Fatal , Febre/etiologia , Transplante de Células-Tronco Hematopoéticas , Humanos , Masculino , Síndromes Mielodisplásicas/complicações
11.
J Ethnopharmacol ; 247: 112201, 2020 Jan 30.
Artigo em Inglês | MEDLINE | ID: mdl-31499140

RESUMO

ETHNOPHARMACOLOGICAL RELEVANCE: Bergenin is a well-known active compound that exhibits antioxidant, antiarrhythmic, hepatoprotective, and anti-inflammatory activities. However, the resource reserve of Rodgersia sambucifolia, one of the main raw materials for extracting bergenin, have sharply declined, and the bergenin content in different germplasms differs vastly, resulting in a serious shortage of the market supply of bergenin. AIM OF THE STUDY: To investigate the influence of genetic diversity and environmental factors on bergenin content in Rodgersia sambucifolia. MATERIALS AND METHODS: Fifty Rodgersia sambucifolia samples with a growth period of 2-3 years were collected from different areas across China and the bergenin content was determined via HPLC. Meanwhile the total genomic DNA was extracted and ISSR was performed. The bergenin content as measured using HPLC and the environmental data gathered from the meteorological stations and field work were combined and analyzed using correlation tests in XLSTAT 2018 to detect the key factors affecting bergenin content. The genetic UPGMA tree constructed based on genetic distances of the 50 samples and the chemical dendrogram constructed according to the distance between the bergenin content were compared to determine the correlation between genetic and chemical differentiation. RESULTS: Among the 50 individuals, bergenin content varied from 2.83 to 12.54%, with the highest content being 4.43-fold that of the lowest content. The survey of the 50 individuals produced a total of 193 amplified bands, 187 of which were polymorphic (96.89%). In the study, bergenin content was positively correlated with annual mean temperature (AMT) (r = 0.583, P < 0.0001) and 1-12 month monthly mean temperature (MMT) (P < 0.0001). A comparison of the genetic dendrogram with the AHC dendrogram found no corresponding relationship between them. Mantel correlation analyses also showed that there was no significant correlation between them (r = 0.144). CONCLUSIONS: There were large differences in bergenin content among different germplasms that were not correlated with the high genetic variation in Rodgersia sambucifolia but were significantly correlated with environmental factors, such as temperature. This study lays the foundation for subsequent superior germplasm selection and artificial breeding of Rodgersia sambucifolia to improve the bergenin content and meet market demands.


Assuntos
Benzopiranos/metabolismo , Produtos Biológicos/metabolismo , Vias Biossintéticas/genética , Variação Genética , Saxifragaceae/metabolismo , Antineoplásicos/isolamento & purificação , Antineoplásicos/metabolismo , Antioxidantes/isolamento & purificação , Antioxidantes/metabolismo , Benzopiranos/isolamento & purificação , Produtos Biológicos/isolamento & purificação , China , DNA de Plantas/genética , DNA de Plantas/isolamento & purificação , Filogenia , Melhoramento Vegetal , Saxifragaceae/genética , Sementes/genética , Sementes/metabolismo , Temperatura
12.
Plast Reconstr Surg ; 145(1): 42e-50e, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-31881603

RESUMO

BACKGROUND: With an increase in recent years in the number of people receiving cosmetic facial injection treatments of hyaluronic acid, the incidence of hyaluronic acid embolism has also increased commensurately. Hyaluronic acid embolism leads to serious complications, including blindness, eye and eyelid movement disorders, skin necrosis, and cerebral embolism. However, there is a lack of robust clinical evidence regarding the benefits of treatment for hyaluronic acid embolism by intraarterial thrombolysis therapy. METHODS: This study included 24 patients with a decrease in visual acuity and other complications induced by facial hyaluronic acid injection. Patients underwent emergency intraarterial thrombolysis therapy by injection of hyaluronidase (500 to 1500 units) alone or hyaluronidase (750 to 1500 units) combined with urokinase (100,000 to 250,000 units), followed in both cases by a general symptomatic treatment and nutritional therapy. RESULTS: Ten (42 percent) of 24 patients ultimately had improvements to visual acuity, even when the clinical application of the thrombolytic treatments had passed the recommended window for optimal treatment. In all cases, patients' facial skin necrosis was restored to nearly normal appearance. In addition, the authors found that hyaluronidase combined with urokinase was a more effective therapy than hyaluronidase alone. CONCLUSIONS: The authors' results indicate that intraarterial thrombolysis therapy is beneficial to patients suffering from blindness induced by hyaluronic acid embolism. The therapy was shown to be worthy of clinical application because it alleviated the impairment to patients' vision and was also beneficial in the recovery from other serious complications, including eye movement disorder, eye edema, headaches, and skin necrosis. CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, IV.


Assuntos
Cegueira/tratamento farmacológico , Técnicas Cosméticas/efeitos adversos , Preenchedores Dérmicos/efeitos adversos , Embolia/tratamento farmacológico , Artéria Oftálmica/patologia , Terapia Trombolítica/métodos , Adulto , Angiografia Digital , Cegueira/etiologia , Preenchedores Dérmicos/administração & dosagem , Quimioterapia Combinada/métodos , Embolia/diagnóstico por imagem , Embolia/etiologia , Embolia/patologia , Olho/irrigação sanguínea , Feminino , Seguimentos , Humanos , Ácido Hialurônico/administração & dosagem , Ácido Hialurônico/efeitos adversos , Hialuronoglucosaminidase/uso terapêutico , Injeções Intra-Arteriais , Injeções Subcutâneas/efeitos adversos , Masculino , Artéria Oftálmica/diagnóstico por imagem , Estudos Retrospectivos , Resultado do Tratamento , Ativador de Plasminogênio Tipo Uroquinase/uso terapêutico , Acuidade Visual
13.
Int Immunopharmacol ; 76: 105907, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31525636

RESUMO

Sepsis disrupts innate and adaptive immune response, and immune disorders may also impact clinical course of sepsis. Notch signaling pathway plays a vital role in T cell modulation and differentiation. The aim of current study was to investigate the immunoregulatory function of Notch signaling pathway to T cells in patients with sepsis and septic shock. Twenty-seven sepsis patients, twenty-five septic shock patients, and twenty-one normal controls (NCs) were enrolled. Notch receptors mRNA levels were semi-quantified by real-time PCR. The absolute numbers of CD3+, CD4+, and CD8+ T cells were measured by flow cytometry. Key transcriptional factors of CD4+ T cells, cytotoxic molecules in CD8+ T cells, and cytotoxicity of CD8+ T cells were investigated. The regulatory activities of Notch signaling inhibition by γ-secretase inhibitor (GSI) on purified CD4+ and CD8+ T cells from sepsis and septic shock patients were also assessed. Notch1 mRNA relative level was significantly elevated in sepsis and septic shock patients when compared with NCs. CD4+ and CD8+ T cells were dysfunctional in sepsis and septic shock, which presented as decreased cell accounts, down-regulation of Th1/Th17 transcriptional factors and cytotoxic molecules (perforin, granzyme B, and FasL), and reduced cytotoxicity of CD8+ T cells. Notch signaling inhibition by GSI increased Th1 and Th17 differentiation of CD4+ T cells. Moreover, GSI stimulation not only promoted perforin, granzyme B, and FasL mRNA expression in CD8+ T cells, but also elevated CD8+ T cell-induced target cell death and IFN-γ/TNF-α production in sepsis and septic shock. The current data suggest that Notch signaling pathway contributes to T cell dysfunction and limited immune response in sepsis.


Assuntos
Receptores Notch/imunologia , Sepse/imunologia , Linfócitos T/imunologia , Adulto , Secretases da Proteína Precursora do Amiloide/antagonistas & inibidores , Proteína Ligante Fas/genética , Feminino , Granzimas/genética , Humanos , Masculino , Pessoa de Meia-Idade , Perforina/genética , Sepse/genética , Transdução de Sinais
14.
Molecules ; 24(17)2019 Aug 28.
Artigo em Inglês | MEDLINE | ID: mdl-31466318

RESUMO

Three iridium(III) complexes ([Ir(Hppy)2(L)](PF6) (Hppy = 2-phenylpyridine, L = 5-nitrophenanthroline, NP), 1; 5-nitro-6-amino-phenanthroline (NAP), 2; and 5,6-diamino-phenanthroline (DAP) 3 were synthesized and characterized. The cytotoxicities of Ir(III) complexes 1-3 against cancer cell lines SGC-7901, A549, HeLa, Eca-109, HepG2, BEL-7402, and normal NIH 3T3 cells were investigated using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-tetrazoliumbromide (MTT) method. The results showed that the three iridium(III) complexes had moderate in vitro anti-tumor activity toward SGC-7901 cells with IC50 values of 3.6 ± 0.1 µM for 1, 14.1 ± 0.5 µM for 2, and 11.1 ± 1.3 µM for 3. Further studies showed that 1-3 induce cell apoptosis/death through DNA damage, cell cycle arrest at the S or G0/G1 phase, ROS elevation, increased levels of Ca2+, high mitochondrial membrane depolarization, and cellular ATP depletion. Transwell and Colony-Forming assays revealed that complexes 1-3 can also effectively inhibit the metastasis and proliferation of tumor cells. These results demonstrate that 1-3 induce apoptosis in SGC-7901 cells through ROS-mediated mitochondrial damage and DNA damage pathways, as well as by inhibiting cell invasion, thereby exerting anti-tumor cell proliferation activity in vitro.


Assuntos
Complexos de Coordenação/síntese química , Irídio/química , Piridinas/química , Espécies Reativas de Oxigênio/metabolismo , Neoplasias Gástricas/metabolismo , Células A549 , Animais , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Complexos de Coordenação/química , Complexos de Coordenação/farmacologia , Desenho de Fármacos , Ensaios de Seleção de Medicamentos Antitumorais , Células HeLa , Células Hep G2 , Humanos , Concentração Inibidora 50 , Camundongos , Células NIH 3T3 , Neoplasias Gástricas/tratamento farmacológico
15.
J Food Sci ; 84(8): 2121-2127, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31269247

RESUMO

The effects of thermal oxidation at 65 °C for 24 days on oxidation indices, fatty acid positional distribution, thermal properties, vitamin E composition and sterol composition of kenaf seed oil are investigated. The results showed that total oxidation value (TOTOX) of the oil increased from initial 8.83 to 130.74 at the end of 24 days storage. Linoleic acid at sn-1, 3 positon of kenaf seed oil was less stable than the one at sn-2 positon. Oxidative degradation changed the melting profile of kenaf seed oil, the value of endothermic enthalpy reduced from 58.17 to 20.25 J/g after 24 days of storage. Moreover, the content of vitamin E and total sterol decreased by 84.26% and 38.47%, respectively. Tocotrienols were more stable than tocopherols during the accelerated storage. Correlation analysis indicated vitamin E content was significantly related to p-anisidine value, while sterol content was significantly related to peroxide value. PRACTICAL APPLICATION: Kenaf seed oil is rich in polyunsaturated fatty acids and bioactive compounds. Heating process and long-term storage cause oil oxidation and bioactive compounds degradation. The oxidation process of kenaf seed oil is simulated with accelerated storage. The study evaluates fatty acid composition and distribution, vitamin E and sterol content, melting thermal characteristics of kenaf seed oil at different oxidation levels. The research shows the stability of fatty acid is related with its type and position in backbone of triacylglycerol molecule. There are good correlation among oxidation level, vitamin E and sterol content, and melting enthalpy value of kenaf seed oil.


Assuntos
Ácidos Graxos/química , Hibiscus/química , Óleos de Plantas/química , Armazenamento de Alimentos , Temperatura Alta , Ácido Linoleico/análise , Oxirredução , Sementes/química , Tocoferóis/análise , Tocotrienóis/análise , Triglicerídeos/análise , Vitamina E/análise
16.
J Int Med Res ; 47(5): 1936-1947, 2019 May.
Artigo em Inglês | MEDLINE | ID: mdl-30843447

RESUMO

OBJECTIVE: To explore correlations between body mass index (BMI), preoperative systemic immune-inflammation index (SII) and endocrine therapy resistance, and evaluate BMI and SII as predictors of resistance, in patients with luminal breast cancer. METHODS: This retrospective study included patients with luminal breast cancer who underwent endocrine therapy at Hebei General Hospital. Relationships between BMI and SII subgroups, and clinicopathological parameters were analysed using χ2-tests. Disease-free survival was assessed using Log-rank statistics. Multivariate analysis of factors related to disease progression were analysed using Cox proportional hazards model. RESULTS: Out of 161 patients, those with normal BMI and low SII had significantly lower endocrine resistance rates versus those with high BMI and SII, and BMI was significantly positively correlated with SII. High BMI or SII was associated with significantly lower disease-free survival rates. Hazard ratios for disease progression risk were 6.036, 3.508 and 1.733, for SII, BMI and TNM stage, respectively. CONCLUSION: In patients with luminal breast cancer, high BMI (>23 kg/m2) and SII (>518 × 109/L) levels may predict high endocrine resistance rates. BMI, SII and TNM stage were independent prognostic factors for endocrine therapy resistance.


Assuntos
Peso Corporal , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/patologia , Resistencia a Medicamentos Antineoplásicos , Hormônios/uso terapêutico , Inflamação/imunologia , Índice de Massa Corporal , Feminino , Humanos , Inflamação/patologia , Pessoa de Meia-Idade , Análise Multivariada , Modelos de Riscos Proporcionais , Curva ROC
17.
Medicine (Baltimore) ; 98(7): e14368, 2019 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-30762736

RESUMO

RATIONALE: Hepatocellular carcinoma (HCC) is the fifth most common cancer and third leading cause of cancer-related deaths worldwide. Nasopharyngeal metastasis of hepatocellular carcinoma is very rare. This is the first report of posttransplantation nasopharyngeal metastasis. PATIENT CONCERNS: A 45-year-old man with a history of hepatitis B related hepatocellular carcinoma (HCC) in the right segment of the liver received an orthotopic liver transplant. Two year after the transplantation, he suffered from severe headache, and head contrast enhanced CT scans did not show clues for brain or skull metastasis. Then he developed hoarseness and dysphagia. DIAGNOSIS: The nasopharyngeal cancer was confirmed to be metastatic tumor from liver histologically according to biopsy. INTERVENTIONS: This patient underwent radiotherapy (RT) of the metastatic nasopharyngeal tumor, and there was significant symptomatic relief. OUTCOMES: The patient died 3 months after nasopharyngeal metastasis was diagnosed. LESSONS: Recurrence of hepatocellular carcinoma with metastasis of nasopharyngeal carcinoma after liver transplantation is rare, but the prognosis is very poor. Close follow-up of patients should be paid attention to prevent the occurrence of such diseases.


Assuntos
Carcinoma Hepatocelular/patologia , Neoplasias Hepáticas/patologia , Neoplasias Nasofaríngeas/secundário , Carcinoma Hepatocelular/complicações , Carcinoma Hepatocelular/cirurgia , Hepatite B/complicações , Humanos , Neoplasias Hepáticas/complicações , Neoplasias Hepáticas/cirurgia , Transplante de Fígado , Masculino , Pessoa de Meia-Idade , Neoplasias Nasofaríngeas/radioterapia
18.
Zhongguo Zhong Yao Za Zhi ; 42(18): 3435-3442, 2017 Sep.
Artigo em Chinês | MEDLINE | ID: mdl-29218925

RESUMO

In this paper,the potential climate factors affecting the Pairs polyphylla var. yunnanensis distribution in China at rational scales were selected from related literatures, using the sampling point geographic information from of P. polyphylla var. yunnanensis, combine the maximum entropy model (MaxEnt) with spatial analyst function of ArcGIS software, to study the climate suitability of P. polyphylla var. yunnanensis cultivating region in China and the leading climate factors. The results showed that, average rainfall in August, average rainfall in October, coefficient of variation of seasonal precipitation, the average temperature of the dry season, isothermal characteristic, average temperature in July were the leading climate factors affecting the potential distribution of P. polyphylla var. yunnanensis cultivating region in China, with their cumulative contribution rate reached 97.2% of all candidate climate factors. Existence probability of the region to be predicted of P. polyphylla var. yunnanensis through the constructed model, the climate unsuitable region, low, medium and high region of P. polyphylla var. yunnanensis in China were clarified and the threshold of climatic factors were gave and clarified the climate characteristics of the cultivating region in each climatic suitability division. The results of research can provide reference for production layout and introduction of P. polyphylla var. yunnanensis.


Assuntos
Clima , Mineração de Dados , Liliaceae/crescimento & desenvolvimento , China , Medicamentos de Ervas Chinesas/análise , Liliaceae/química
19.
Zhongguo Zhong Yao Za Zhi ; 42(3): 433-437, 2017 Feb.
Artigo em Chinês | MEDLINE | ID: mdl-28952245

RESUMO

Cycloartenol, a phytosterol compound, also one of the key precusor substances for biosynthesis of numerous sterol compounds, has a variety of pharmacological activities such as anti-inflammatory, anti-tumor, antioxidant, antibiosis and anti-alzheimer's disease. Furthermore, cycloartenol also plays an important role in the process of plant growth and development. This article reviewed the research progress on cycloartenol pharmacological activity in domestic and foreign articles, and summarized the effect of cycloartenol and "cycloartenol pathway" on the plant growth and development, laying foundation for the its further study, development and utilization.


Assuntos
Fitosteróis/farmacologia , Triterpenos/farmacologia , Esteróis
20.
Br J Pharmacol ; 174(17): 2912-2928, 2017 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-28627773

RESUMO

BACKGROUND AND PURPOSE: Glucagon-like peptide-1 (GLP-1) is an important target for diabetes therapy based on its key role in maintaining glucose and lipid homeostasis. This study was designed to investigate antidiabetic and hepatoprotective effects of a novel oleanolic acid derivative DKS26 in diabetic mice and elucidate its underlying GLP-1 related antidiabetic mechanisms in vitro and in vivo. EXPERIMENTAL APPROACH: The therapeutic effects of DKS26 were investigated in streptozotocin (STZ)-induced and db/db diabetic mouse models. Levels of plasma glucose, glycosylated serum protein (GSP), lipid profiles, insulin, alanine aminotransferase (ALT) and aspartate aminotransferase (AST), oral glucose tolerance (OGT), pancreatic islets and hepatic histopathological morphology, liver lipid levels and expression of pro-inflammatory cytokines were assessed. Intestinal NCI-H716 cells and diabetic models were used to further validate its potential GLP-1-related antidiabetic mechanisms. KEY RESULTS: DKS26 treatment (100 mg·kg-1 ·day-1 ) decreased plasma levels of glucose, GSP, ALT and AST; ameliorated OGT and plasma lipid profiles; augmented plasma insulin levels; alleviated islets and hepatic pathological morphology; and reduced liver lipid accumulation, inflammation and necrosis in vivo. Furthermore, DKS26 enhanced GLP-1 release and expression, accompanied by elevated levels of cAMP and phosphorylated PKA in vitro and in vivo. CONCLUSION AND IMPLICATIONS: DKS26 exerted hypoglycaemic, hypolipidaemic and islets protective effects, which were associated with an enhanced release and expression of GLP-1 mediated by the activation of the cAMP/PKA signalling pathway, and alleviated hepatic damage by reducing liver lipid levels and inflammation. These findings firmly identified DKS26 as a new viable therapeutic option for diabetes control.


Assuntos
Diabetes Mellitus Experimental/tratamento farmacológico , Hipoglicemiantes/uso terapêutico , Ácido Oleanólico/análogos & derivados , Ácido Oleanólico/uso terapêutico , Substâncias Protetoras/uso terapêutico , Alanina Transaminase/sangue , Animais , Aspartato Aminotransferases/sangue , Glicemia/análise , Peso Corporal/efeitos dos fármacos , Linhagem Celular , AMP Cíclico/metabolismo , Proteínas Quinases Dependentes de AMP Cíclico/metabolismo , Diabetes Mellitus Experimental/sangue , Diabetes Mellitus Experimental/metabolismo , Células Enteroendócrinas/efeitos dos fármacos , Células Enteroendócrinas/metabolismo , Peptídeo 1 Semelhante ao Glucagon/metabolismo , Humanos , Hipoglicemiantes/farmacologia , Metabolismo dos Lipídeos/efeitos dos fármacos , Fígado/efeitos dos fármacos , Fígado/metabolismo , Fígado/patologia , Masculino , Camundongos , Obesidade/sangue , Obesidade/tratamento farmacológico , Obesidade/metabolismo , Ácido Oleanólico/farmacologia , Pâncreas/efeitos dos fármacos , Pâncreas/patologia , Substâncias Protetoras/farmacologia
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