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1.
Cytotherapy ; 25(6): 561-572, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-36642683

RESUMO

Inflammation is the result of acute and chronic stresses, caused by emotional or physical trauma, or nutritional or environmental pollutants, and brings serious harm to human life and health. As an important cellular component of the innate immune barrier, the macrophage plays a key role in maintaining tissue homeostasis and promoting tissue repair by controlling infection and resolving inflammation. Several studies suggest that V Set and Ig domain-containing 4 is specifically expressed in tissue macrophages and is associated with a variety of inflammatory diseases. In this paper, we mainly summarize the recent research on V Set and Ig domain-containing 4 structures, functions, function and roles in acute and chronic inflammatory diseases, and provide a novel therapeutic avenue for the treatment of inflammatory diseases, including nervous system, urinary, respiratory and metabolic diseases.


Assuntos
Macrófagos , Receptores de Complemento , Animais , Camundongos , Humanos , Receptores de Complemento/metabolismo , Camundongos Endogâmicos C57BL , Macrófagos/metabolismo , Inflamação/terapia , Inflamação/metabolismo , Domínios de Imunoglobulina
2.
Molecules ; 28(18)2023 Sep 19.
Artigo em Inglês | MEDLINE | ID: mdl-37764474

RESUMO

In this paper, the anti-cancer activity and molecular mechanisms of the isomers of AD-1 and AD-2 (20(R)-AD-1, 20(R)-AD-2, 20(S)-AD-1 and 20(S)-AD-2) were investigated. The results indicated that all of the four compounds obviously suppressed the viability of various cancer cells, and the anti-cancer activity of 20(R)-AD-1 and 20(R)-AD-2 was significantly better than 20(S)-AD-1 and 20(S)-AD-2, especially for gastric cancer cells (BGC-803). Then, the differences in the anti-cancer mechanisms of the isomers were investigated. The data showed that 20(R)-AD-1 and 20(R)-AD-2 induced apoptosis and decreased MMP, up-regulated the expression of cytochrome C in cytosol, transferred Bax to the mitochondria, suppressed oxidative phosphorylation and glycolysis and stimulated reactive oxygen species (ROS) production. Apoptosis can be attenuated by the reactive oxygen species scavenger N-acetylcysteine. However, 20(S)-AD-1 and 20(S)-AD-2 barely exhibited the same results. The results indicated that 20(R)-AD-1 and 20(R)-AD-2 suppressed cellular energy metabolism and caused apoptosis through the mitochondrial pathway, which ROS generation was probably involved in. Above all, the data support the development of 20(R)-AD-1 and 20(R)-AD-2 as potential agents for human gastric carcinoma therapy.

3.
Int J Mol Sci ; 23(15)2022 Jul 31.
Artigo em Inglês | MEDLINE | ID: mdl-35955628

RESUMO

Inflammatory bowel disease (IBD) is a chronic, relapsing disease that severely affects patients' quality of life. The exact cause of IBD is uncertain, but current studies suggest that abnormal activation of the immune system, genetic susceptibility, and altered intestinal flora due to mucosal barrier defects may play an essential role in the pathogenesis of IBD. Unfortunately, IBD is currently difficult to be wholly cured. Thus, more treatment options are needed for different patients. Stem cell therapy, mainly including hematopoietic stem cell therapy and mesenchymal stem cell therapy, has shown the potential to improve the clinical disease activity of patients when conventional treatments are not effective. Stem cell therapy, an emerging therapy for IBD, can alleviate mucosal inflammation through mechanisms such as immunomodulation and colonization repair. Clinical studies have confirmed the effectiveness of stem cell transplantation in refractory IBD and the ability to maintain long-term remission in some patients. However, stem cell therapy is still in the research stage, and its safety and long-term efficacy remain to be further evaluated. This article reviews the upcoming stem cell transplantation methods for clinical application and the results of ongoing clinical trials to provide ideas for the clinical use of stem cell transplantation as a potential treatment for IBD.


Assuntos
Transplante de Células-Tronco Hematopoéticas , Doenças Inflamatórias Intestinais , Células-Tronco Mesenquimais , Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Humanos , Doenças Inflamatórias Intestinais/tratamento farmacológico , Intestinos/patologia , Células-Tronco Mesenquimais/patologia , Qualidade de Vida
4.
Phys Chem Chem Phys ; 23(34): 18404-18413, 2021 Sep 14.
Artigo em Inglês | MEDLINE | ID: mdl-34612381

RESUMO

As a human mitotic kinase, haspin is considered as a promising target for various diseases including cancers. However, no inhibitors targeting haspin have entered clinical trials presently. 5-iTU (5-iodotubercidin) is a useful and classical chemical probe for the investigation of haspin activity, but its inhibitory mechanism remains unclear. In this study, integrated molecular dynamics (MD) of conventional MD, extended adaptive biasing force (eABF), random acceleration MD and well-tempered metadynamics were applied to investigate the thermodynamic and kinetic features of 5-iTU and three derivatives targeting haspin. To emphasize the importance of gatekeeper Phe605, two haspin mutants (F605Y and F605T) were also built. The results showed that the binding affinity of 5-iTU and haspin was highest in all wild type (WT) systems, relying on the strong halogen aromatic π interaction between 5-iTU and gatekeeper Phe605. Gatekeeper mutations, because of damage to this interaction, led to the rearrangement of water distributions at the binding site and the decrease of 5-iTU residence times. Additionally, compared with the smaller 5-fTU, 5-iTU dissociated from WT haspin with more difficulty through distinct unbinding pathways. These findings will provide crucial guidance for the design and development of novel haspin inhibitors and the rational modification of existing inhibitors.


Assuntos
Peptídeos e Proteínas de Sinalização Intracelular/antagonistas & inibidores , Simulação de Dinâmica Molecular , Inibidores de Proteínas Quinases/farmacologia , Proteínas Serina-Treonina Quinases/antagonistas & inibidores , Termodinâmica , Tubercidina/análogos & derivados , Humanos , Peptídeos e Proteínas de Sinalização Intracelular/metabolismo , Cinética , Conformação Molecular , Inibidores de Proteínas Quinases/química , Proteínas Serina-Treonina Quinases/metabolismo , Tubercidina/química , Tubercidina/farmacologia
5.
Surg Today ; 50(9): 1091-1098, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32239305

RESUMO

PURPOSE: A novel pharmacological mechanism of valproate was analyzed using a hamster model of adhesion. METHODS: Valproate or placebo was administered just after cecal injury and adhesion severity scores and histological were analyzed. RESULTS: The adhesion severity scores in the placebo- and valproate-treated groups were 2.67 ± 0.42 and 1.0 ± 0.37, respectively, with a significant difference between the groups. A significant increase in mast cell numbers was observed in the placebo-treated group vs. the sham-operated group; however, the mast cell number in the adhesive lesion was significantly lower in the valproate-treated group than in the placebo-treated group. The number of cells positive for chymase, an enzyme in mast cells, in the adhesive lesion was significantly higher in the placebo-treated group, but its increase was attenuated significantly by treatment with valproate. The myeloperoxidase gene expression level in the cecum was significantly higher in the placebo-treated group than in the sham-operated group, but there was no significant difference in the myeloperoxidase gene expression level between the sham-operated and valproate-treated groups in. In an in vitro experiment, valproate inhibited purified human and hamster chymases dose-dependently. CONCLUSION: The chymase inhibitory effect of valproate may contribute to prevent adhesion formation after abdominal injury.


Assuntos
Ceco/lesões , Mastócitos/patologia , Doenças Peritoneais/patologia , Doenças Peritoneais/prevenção & controle , Aderências Teciduais/patologia , Aderências Teciduais/prevenção & controle , Ácido Valproico/administração & dosagem , Ácido Valproico/farmacologia , Animais , Ceco/metabolismo , Contagem de Células , Células Cultivadas , Quimases/metabolismo , Cricetinae , Modelos Animais de Doenças , Relação Dose-Resposta a Droga , Expressão Gênica/efeitos dos fármacos , Humanos , Masculino , Mastócitos/enzimologia , Doenças Peritoneais/etiologia , Peroxidase/genética , Peroxidase/metabolismo , Índice de Gravidade de Doença , Aderências Teciduais/etiologia
6.
Anticancer Drugs ; 29(3): 197-207, 2018 03.
Artigo em Inglês | MEDLINE | ID: mdl-29438228

RESUMO

Newcastle disease virus (NDV) can specifically kill cancer cells and has less toxicity to normal cells. The hemagglutinin-neuraminidase (HN) protein is an important structural protein in NDV pathogenesis and has been postulated as a promising candidate for antitumor therapy. The aim of this study was to investigate the anticancer potential of recombinant adenovirus Ad-HN-PEG3p-E1a. An MTS assay was performed to determine viral proliferation after viral infection, the data showed that the proliferation ability of osteosarcoma cells decreased, whereas there was no significant change in normal hepatic cells. DAPI and Annexin V experiments showed that osteosarcoma cells were killed because of apoptosis, active oxygen content, and augmented mitochondrial membrane potential loss. Caspase Activity Assay Kits were used to detect the caspase-3 activities of the treated OS-732 for increased expression. Western blot analysis showed that cytochrome C increased significantly and apoptosis of the virus was confirmed in tumor cells. In-vivo experiments show that NDV has an inhibitory effect on tumor growth. The recombinant adenovirus, which is composed of a HN protein and progressive increment promoter PEG3p, could inhibit the growth of OS-732 and promote the apoptosis of tumor cells. However, there was no clear relationship with normal cell (L02) apoptosis.


Assuntos
Neoplasias Ósseas/terapia , Hemaglutininas Virais/genética , Neuraminidase/genética , Vírus da Doença de Newcastle/genética , Terapia Viral Oncolítica/métodos , Osteossarcoma/terapia , Animais , Apoptose/genética , Neoplasias Ósseas/genética , Neoplasias Ósseas/patologia , Neoplasias Ósseas/virologia , Linhagem Celular Tumoral , Feminino , Células HEK293 , Hemaglutininas Virais/biossíntese , Humanos , Camundongos , Neuraminidase/biossíntese , Vírus da Doença de Newcastle/enzimologia , Osteossarcoma/genética , Osteossarcoma/patologia , Osteossarcoma/virologia , Distribuição Aleatória
7.
Mediators Inflamm ; 2015: 613249, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26557739

RESUMO

Tenascin-C (TN-C), an extracellular matrix (ECM) glycoprotein, is specifically induced upon tissue injury and infection and during septic conditions. Carbon monoxide (CO) gas is known to exert various anti-inflammatory effects in various inflammatory diseases. However, the mechanisms underlying the effect of CO on TN-C-mediated inflammation are unknown. In the present study, we found that treatment with LPS significantly enhanced TN-C expression in macrophages. CO gas, or treatment with the CO-donor compound, CORM-2, dramatically reduced LPS-induced expression of TN-C and proinflammatory cytokines while significantly increased the expression of IL-10. Treatment with TN-C siRNA significantly suppressed the effects of LPS on proinflammatory cytokines production. TN-C siRNA did not affect the CORM-2-dependent increase of IL-10 expression. In cells transfected with IL-10 siRNA, CORM-2 had no effect on the LPS-induced expression of TN-C and its downstream cytokines. These data suggest that IL-10 mediates the inhibitory effect of CO on TN-C and the downstream production of proinflammatory cytokines. Additionally, administration of CORM-2 dramatically reduced LPS-induced TN-C and proinflammatory cytokines production while expression of IL-10 was significantly increased. In conclusion, CO regulated IL-10 expression and thus inhibited TN-C-mediated inflammation in vitro and in vivo.


Assuntos
Anti-Inflamatórios/farmacologia , Monóxido de Carbono/farmacologia , Interleucina-10/fisiologia , Sepse/tratamento farmacológico , Tenascina/antagonistas & inibidores , Animais , Células Cultivadas , Citocinas/biossíntese , Modelos Animais de Doenças , Relação Dose-Resposta a Droga , Heme Oxigenase-1/fisiologia , Inflamação/tratamento farmacológico , Inflamação/imunologia , Lipopolissacarídeos/farmacologia , Masculino , Proteínas de Membrana/fisiologia , Camundongos , Camundongos Endogâmicos C57BL , Tenascina/fisiologia
8.
Cancer Biol Ther ; 25(1): 2302413, 2024 12 31.
Artigo em Inglês | MEDLINE | ID: mdl-38356266

RESUMO

The antipsychotic drug pimozide has been demonstrated to inhibit cancer. However, the precise anti-cancer mechanism of pimozide remains unclear. The purpose of this study was to investigate the effects of pimozide on human MCF-7 and MDA-MB-231 breast cancer cell lines, and the potential involvement in the RAF/ERK signaling. The effects of pimozide on cells were examined by 4,5-dimethylthiazol-2-yl-3,5-diphenylformazan, wound healing, colony formation, transwell assays, and caspase activity assay. Flow cytometry and acridine orange and ethidium bromide staining were performed to assess changes in cells. Transmission electron microscopy and monodansylcadaverine staining were used to observe autophagosomes. The cyclic adenosine monophosphate was evaluated using the FRET system. Immunohistochemistry, immunofluorescence, RNA interference, and western blot investigated the expression of proteins. Mechanistically, we focus on the RAF1/ERK signaling. We detected pimozide was docked to RAF1 by Schrodinger software. Pimozide down-regulated the phosphorylation of RAF1, ERK 1/2, Bcl-2, and Bcl-xl, up-regulated Bax, and cleaved caspase-9 to induce apoptosis. Pimozide might promote autophagy by up-regulating cAMP. The enhancement of autophagy increased the conversion of LC3-I to LC3-II and down-regulated p62 expression. But mTOR signaling was not involved in promoting autophagy. The knockdown of RAF1 expression induced autophagy and apoptosis in breast cancer cells, consistent with the results of pimozide or sorafenib alone. Blocked autophagy by chloroquine resulted in the impairment of pimozide-induced apoptosis. These data showed that pimozide inhibits breast cancer by regulating the RAF/ERK signaling pathway and might activate cAMP-induced autophagy to promote apoptosis and it may be a potential drug for breast cancer treatment.


Assuntos
Antipsicóticos , Neoplasias da Mama , Humanos , Feminino , Sistema de Sinalização das MAP Quinases , Neoplasias da Mama/tratamento farmacológico , Antipsicóticos/farmacologia , Antipsicóticos/uso terapêutico , Pimozida/farmacologia , Proliferação de Células , Apoptose , Autofagia , Linhagem Celular Tumoral
9.
Am J Chin Med ; 52(3): 885-904, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38716619

RESUMO

Polyphyllin VII is a biologically active herbal monomer extracted from the traditional Chinese herbal medicine Chonglou. Many studies have demonstrated the anticancer activity of polyphyllin VII against various types of cancers, such as colon, liver, and lung cancer, but its effect on breast cancer has not been elucidated. In this study, we demonstrate that polyphyllin VII inhibited proliferation, increased production of intracellular reactive oxygen species, and decreased mitochondrial membrane potential in breast cancer cells. Notably, polyphyllin VII also induced apoptosis via the mitochondrial pathway. Transcriptome sequencing was used to analyze the targets of PPVII in regulating breast cancer cells. Mechanistic studies showed that polyphyllin VII downregulated Son of Sevenless1 (SOS1) and inhibited the MAPK/ERK pathway. Furthermore, PPVII exerted strong antitumor effects in vivo in nude mice injected with breast cancer cells. Our results suggest that PPVII may promote apoptosis through regulating the SOS1/MAPK/ERK pathway, making it a possible candidate target for the treatment of breast cancer.


Assuntos
Apoptose , Neoplasias da Mama , Regulação para Baixo , Sistema de Sinalização das MAP Quinases , Proteína SOS1 , Apoptose/efeitos dos fármacos , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/metabolismo , Neoplasias da Mama/patologia , Neoplasias da Mama/genética , Animais , Humanos , Feminino , Regulação para Baixo/efeitos dos fármacos , Sistema de Sinalização das MAP Quinases/efeitos dos fármacos , Proteína SOS1/metabolismo , Proteína SOS1/genética , Camundongos Nus , Saponinas/farmacologia , Saponinas/uso terapêutico , Proliferação de Células/efeitos dos fármacos , Espécies Reativas de Oxigênio/metabolismo , Camundongos , Linhagem Celular Tumoral , Medicamentos de Ervas Chinesas/farmacologia , Fitoterapia , Antineoplásicos Fitogênicos/farmacologia , Potencial da Membrana Mitocondrial/efeitos dos fármacos , Camundongos Endogâmicos BALB C
10.
Am J Physiol Endocrinol Metab ; 304(7): E780-8, 2013 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-23403944

RESUMO

Leptin, a circulating hormone, regulates food intake and body weight. While leptin resistance represents a major cause of obesity, the underlying mechanisms remain unclear. Endoplasmic reticulum (ER) stress can contribute to leptin resistance. Carbon monoxide (CO), a gaseous molecule, exerts antiapoptotic and anti-inflammatory effects in animal models of tissue injury. We hypothesized that CO could inhibit leptin resistance during ER stress. Thapsigargin or tunicamycin was used to induce ER stress in human cells expressing the leptin receptor. These agents markedly inhibited leptin-induced STAT3 phosphorylation, confirming that ER stress induces leptin resistance. The CO-releasing molecule CORM-2 blocked the ER stress-dependent inhibition of leptin-induced STAT3 phosphorylation. CORM-2 treatment induced the phosphorylation of protein kinase R-like endoplasmic reticulum kinase (PERK), and eukaryotic translation initiation factor-2α and enhanced PERK phosphorylation during ER stress. Furthermore, CORM-2 inhibited X-box binding protein-1 expression, activating transcription factor-6 cleavage, and inositol-requiring enzyme (IRE)1α phosphorylation induced by ER stress. IRE1α knockdown rescued leptin resistance, whereas PERK knockdown blocked CO-dependent regulation of IRE1α. In vivo, CO inhalation normalized body weight in animals fed high-fat diets. Furthermore, CO modulated ER stress pathways and rescued leptin resistance in vivo. In conclusion, the pathological mechanism of leptin resistance may be ameliorated by the pharmacological application of CO.


Assuntos
Antimetabólitos/farmacologia , Monóxido de Carbono/farmacologia , Estresse do Retículo Endoplasmático/efeitos dos fármacos , Leptina/metabolismo , Compostos Organometálicos/farmacologia , Receptores para Leptina , Fator de Transcrição STAT3/metabolismo , Animais , Antibacterianos/farmacologia , Células CHO , Linhagem Celular Tumoral , Cricetinae , Cricetulus , Dieta Hiperlipídica , Retículo Endoplasmático/efeitos dos fármacos , Retículo Endoplasmático/metabolismo , Estresse do Retículo Endoplasmático/fisiologia , Endorribonucleases/genética , Endorribonucleases/metabolismo , Inibidores Enzimáticos/farmacologia , Humanos , Camundongos , Fosforilação/efeitos dos fármacos , Proteínas Serina-Treonina Quinases/genética , Proteínas Serina-Treonina Quinases/metabolismo , Receptores para Leptina/metabolismo , Transdução de Sinais/efeitos dos fármacos , Tapsigargina/farmacologia , Tunicamicina/farmacologia , eIF-2 Quinase/metabolismo
11.
Biomed Pharmacother ; 158: 114086, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36502751

RESUMO

Ulcerative colitis (UC) is a chronic inflammatory disease of the intestine that presents clinically with abdominal pain, mucopurulent stools, and posterior urgency. The lesions of UC are mainly concentrated in the rectal and colonic mucosa and submucosa. For patients with mild to moderate UC, the best pharmacological treatment includes glucocorticoids, immunosuppressants, antibiotics, and biologics, but the long-term application can have serious toxic side effects. Currently, nearly 40% of UC patients are treated with herbal natural products in combination with traditional medications to reduce the incidence of toxic side effects. Flavonoid herbal natural products are the most widely distributed polyphenols in plants and fruits, which have certain antioxidant and anti-inflammatory activities. Flavonoid herbal natural products have achieved remarkable efficacy in the treatment of UC. The pharmacological mechanisms are related to anti-inflammation, promotion of mucosal healing, maintenance of intestinal immune homeostasis, and regulation of intestinal flora. In this paper, we summarize the flavonoid components of anti-ulcerative colitis and their mechanisms reported in the past 10 years, to provide a basis for rational clinical use and the development of new anti-ulcerative colitis drugs.


Assuntos
Produtos Biológicos , Colite Ulcerativa , Humanos , Produtos Biológicos/farmacologia , Produtos Biológicos/uso terapêutico , Flavonoides/farmacologia , Flavonoides/uso terapêutico , Colite Ulcerativa/patologia , Reto/patologia , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/uso terapêutico
12.
Biomed Pharmacother ; 165: 114893, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37352702

RESUMO

Gut microbes constitute the main microbiota in the human body, which can regulate biological processes such as immunity, cell proliferation, and differentiation, hence playing a specific function in intestinal diseases. In recent years, gut microbes have become a research hotspot in the pharmaceutical field. Because of their enormous number, diversity, and functional complexity, gut microbes have essential functions in the development of many digestive diseases. Inflammatory bowel disease (IBD) is a chronic non-specific inflammatory disease with a complex etiology, the exact cause and pathogenesis are unclear. There are no medicines that can cure IBD, and more research on therapeutic drugs is urgently needed. It has been reported that gut microbes play a critical role in pathogenesis, and there is a tight and complex association between gut microbes and IBD. The dysregulation of gut microbes may be a predisposing factor for IBD, and at the same time, IBD may exacerbate gut microbes' disorders, but the mechanism of interaction between the two is still not well defined. The study of the relationship between gut microbes and IBD is not only important to elucidate the pathogenesis but also has a positive effect on the treatment based on the regimen of regulating gut microbes. This review describes the latest research progress on the functions of gut microbes and their relationship with IBD, which can provide reference and assistance for further research. It may provide a theoretical basis for the application of probiotics, fecal microbiota transplantation, and other therapeutic methods to regulate gut microbes in IBD.


Assuntos
Microbioma Gastrointestinal , Doenças Inflamatórias Intestinais , Microbiota , Probióticos , Humanos , Doenças Inflamatórias Intestinais/tratamento farmacológico , Probióticos/uso terapêutico , Transplante de Microbiota Fecal
13.
Front Pharmacol ; 14: 1265825, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37849728

RESUMO

Ulcerative colitis (UC) is a clinically common, progressive, devastating, chronic inflammatory disease of the intestine that is recurrent and difficult to treat. Nod-like receptor protein 3 (NLRP3) is a protein complex composed of multiple proteins whose formation activates cysteine aspartate protease-1 (caspase-1) to induce the maturation and secretion of inflammatory mediators such as interleukin (IL)-1ß and IL-18, promoting the development of inflammatory responses. Recent studies have shown that NLRP3 is associated with UC susceptibility, and that it maintains a stable intestinal environment by responding to a wide range of pathogenic microorganisms. The mainstay of treatment for UC is to control inflammation and relieve symptoms. Despite a certain curative effect, there are problems such as easy recurrence after drug withdrawal and many side effects associated with long-term medication. NLRP3 serves as a core link in the inflammatory response. If the relationship between NLRP3 and gut microbes and inflammation-associated factors can be analyzed concerning its related inflammatory signaling pathways, its expression status as well as specific mechanism in the course of IBD can be elucidated and further considered for clinical diagnosis and treatment of IBD, it is expected that the development of lead compounds targeting the NLRP3 inflammasome can be developed for the treatment of IBD. Research into the prevention and treatment of UC, which has become a hotbed of research in recent years, has shown that natural products are rich in therapeutic means, and multi-targets, with fewer adverse effects. Natural products have shown promise in treating UC in numerous basic and clinical trials over the past few years. This paper describes the regulatory role of the NLRP3 inflammasome in UC and the mechanism of recent natural products targeting NLRP3 against UC, which provides a reference for the clinical treatment of this disease.

14.
Eur J Pharmacol ; 954: 175834, 2023 Sep 05.
Artigo em Inglês | MEDLINE | ID: mdl-37329970

RESUMO

Non-alcoholic fatty liver disease (NAFLD) is a clinicopathological syndrome characterized by fatty lesions and fat accumulation in hepatic parenchymal cells, which is in the absence of excessive alcohol consumption or definite liver damage factors. The exact pathogenesis of NAFLD is not fully understood, but it is now recognized that oxidative stress, insulin resistance, and inflammation are essential mechanisms involved in the development and treatment of NAFLD. NAFLD therapy aims to stop, delay or reverse disease progressions, as well as improve the quality of life and clinical outcomes of patients with NAFLD. Gasotransmitters are produced by enzymatic reactions, regulated through metabolic pathways in vivo, which can freely penetrate cell membranes with specific physiological functions and targets. Three gasotransmitters, nitric oxide, carbon monoxide, and hydrogen sulfide have been discovered. Gasotransmitters exhibit the effects of anti-inflammatory, anti-oxidant, vasodilatory, and cardioprotective agents. Gasotransmitters and their donors can be used as new gas-derived drugs and provide new approaches to the clinical treatment of NAFLD. Gasotransmitters can modulate inflammation, oxidative stress, and numerous signaling pathways to protect against NAFLD. In this paper, we mainly review the status of gasotransmitters research on NAFLD. It provides clinical applications for the future use of exogenous and endogenous gasotransmitters for the treatment of NAFLD.


Assuntos
Gasotransmissores , Sulfeto de Hidrogênio , Hepatopatia Gordurosa não Alcoólica , Humanos , Gasotransmissores/uso terapêutico , Gasotransmissores/metabolismo , Hepatopatia Gordurosa não Alcoólica/terapia , Qualidade de Vida , Sulfeto de Hidrogênio/uso terapêutico , Sulfeto de Hidrogênio/metabolismo , Antioxidantes , Inflamação/patologia , Fígado/metabolismo
15.
Exp Ther Med ; 23(4): 255, 2022 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-35261627

RESUMO

Coronary heart disease is the leading cause of mortality among all diseases globally. Percutaneous coronary intervention (PCI) is a key method for the treatment of coronary heart disease. Optical coherence tomography (OCT) is an optical diagnostic technology with a resolution of up to 10 µm, which is able to accurately assess the composition of the coronary arterial wall and determine the characteristics of atherosclerotic lesions. It is also highly consistent with pathological examinations, optimizing the effect of stent implantation and evaluation of the long-term effectiveness and safety of the stent, which has irreplaceable value in the field of precision and optimization of coronary intervention. The innovative OCT technology may help provide more comprehensive clinical research evidence. The application of OCT in clinical and basic research of coronary atherosclerosis, selection of treatment strategies for acute coronary syndromes, optimization of interventional treatment efficacy, evaluation of novel stents, intimal stent coverage and selection of dual antiplatelet drugs has become more widely used, affecting the current coronary interventional treatment strategies to a certain extent. The aim of the present review was to discuss the role of OCT in evaluating preoperative plaque characteristics, guiding PCI and evaluating the effects of postoperative stents or drug treatments.

16.
Biomed Pharmacother ; 156: 113746, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36228376

RESUMO

Salidroside (SAL) is a phenylpropanoid glycoside monomer extracted from Rhodiola at high altitudes. It has been proven to have protective effects on myocardial injury, liver cancer, renal fibrosis, and other organ diseases, as well as play neuroprotective roles in central nervous system (CNS) diseases. Specifically, SAL can inhibit a series of pathological reactions in CNS diseases and improve neurological dysfunction. This review elucidated the pharmacological effects of SAL on inflammation, oxidative stress, apoptosis, autophagy, and neuronal regeneration. Furthermore, how SAL affects various signaling pathways to regulate pathological processes in CNS diseases is also assessed. However, the relationship between various pathways and the mechanisms in different pathological stages remains unclear. Additionally, the appropriate dosage and side effects of SAL on the clinical outcomes of CNS diseases have not been fully determined due to the limited number of clinical studies on SAL. Therefore, the regulatory mechanisms and clinical applications of SAL still need to be further demonstrated. This review tracked and summarized studies from the past eight years reported in databases, including PubMed, ScienceDirect, and Google Scholar, filtered using the keywords "salidroside" and/or paired with "diseases" and "CNS diseases".


Assuntos
Doenças do Sistema Nervoso Central , Rhodiola , Glucosídeos/farmacologia , Glucosídeos/uso terapêutico , Fenóis/farmacologia , Fenóis/uso terapêutico , Doenças do Sistema Nervoso Central/tratamento farmacológico
17.
Life Sci ; 309: 120976, 2022 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-36126724

RESUMO

AIMS: To determine the effects of valproic acid (VPA) on anti-proliferative effects and mitochondrial function in breast cancer cells and the underlying mechanisms involved in the effects, with a focus on signal transduction. MAIN METHODS: The inhibitory effect of valproic acid on breast cancer in vivo and in vitro was evaluated by cellular and animal experiments. Mitochondria-related proteins as well as hippo pathway were monitored by western blotting. The effects of VPA on mitochondrial membrane potential, reactive oxygen species, and apoptosis were confirmed by flow cytometry. In addition, the involvement of hippo pathway in the regulation of mitochondrial function by VPA was verified by XMU-MP-1 (MST2 inhibitor). KEY FINDINGS: In this study, we highlight that VPA significantly attenuates mitochondrial function, leading to inhibited cell proliferation and reduced colony formation in MCF-7 and MDA-MB-231 breast cancer cells. Mechanistically, VPA-induced suppression of mitochondrial aerobic respiration was mediated by decreased expression of mitochondrial elongation factor 1 through activation of the hippo pathway, resulting in impaired breast cancer growth. In summary, we uncover a novel mechanism of VPA in regulating mitochondrial aerobic respiration, which is essential for developing an effective approach in breast cancer therapy. SIGNIFICANCE: Mitochondrial aerobic respiration and its products are the main sources of energy for tumors; therefore, studying the role of mitochondrial function in tumor cells is significant. VPA has been used as a therapeutic agent for cancer. However, the detail mechanism underlying the effects of VPA on mitochondrial function in breast cancer remains unclear.


Assuntos
Neoplasias , Ácido Valproico , Animais , Ácido Valproico/farmacologia , Espécies Reativas de Oxigênio/metabolismo , Fator 1 de Elongação de Peptídeos/metabolismo , Linhagem Celular Tumoral , Potencial da Membrana Mitocondrial , Apoptose , Proteínas Mitocondriais/metabolismo
18.
Biomed Pharmacother ; 150: 113063, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35658233

RESUMO

The Warburg effect is a promising target for the diagnosis and treatment of cancer, referring to the ability of cancer cells to generate energy through high levels of glycolysis even in the presence of oxygen, allowing them to grow and proliferate rapidly. The antipsychotic Pimozide has strong anti-breast cancer effects both in vivo and in vitro, whether Pimozide has an inhibitory effect on aerobic glycolysis has not been elucidated. In this study, Pimozide inhibited the Warburg effect of breast cancer cells by hindering glucose uptake, ATP level and lactate production; reducing the extracellular acidification rate (ECAR); suppressing the expression of PKM2, a rate-limiting enzyme in glycolysis. Intriguingly, Pimozide was significantly involved in reprogramming glucose metabolism in breast cancer cells through a p53-dependent manner. Mechanistic studies demonstrated Pimozide increased the expression of p53 through inhibition of the PI3K/Akt/MDM2 signaling pathway, which in turn downregulated the expression of PKM2. In sum, our results suggest that Pimozide mediates the p53 signaling pathway through PI3K/AKT/MDM2 to inhibit the Warburg effect and breast cancer growth, and it may be a potential aerobic glycolysis inhibitor for the treatment of breast cancer.


Assuntos
Neoplasias da Mama , Proteína Supressora de Tumor p53 , Neoplasias da Mama/tratamento farmacológico , Linhagem Celular Tumoral , Proliferação de Células , Feminino , Glicólise , Humanos , Fosfatidilinositol 3-Quinases/metabolismo , Pimozida/farmacologia , Proteínas Proto-Oncogênicas c-akt/metabolismo , Transdução de Sinais , Proteína Supressora de Tumor p53/metabolismo
19.
Front Pharmacol ; 13: 892790, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35873579

RESUMO

Inflammatory bowel disease (IBD) is a rare, recurrent, and intractable inflammation obstruction of the stomach tract, usually accompanied by inflammation of cell proliferation and inflammation of the colon and carries a particular cause of inflammation. The clinical use of drugs in western countries affects IBD treatment, but various adverse effects and high prices limit their application. For these reasons, Traditional Chinese Medicine (TCM) is more advantageous in treating IBD. This paper reviews the mechanism and research status of TCM and natural products in IBD treatment by analyzing the relevant literature to provide a scientific and theoretical basis for IBD treatment.

20.
Chin Med ; 17(1): 74, 2022 Jun 18.
Artigo em Inglês | MEDLINE | ID: mdl-35717380

RESUMO

Inflammatory bowel disease (IBD) is a chronic recurrent inflammatory disease of the intestine, including Crohn's disease (CD) and ulcerative colitis (UC), whose etiology and pathogenesis have not been fully understood. Due to its prolonged course and chronic recurrence, IBD imposes a heavy economic burden and psychological stress on patients. Traditional Chinese Herbal Medicine has unique advantages in IBD treatment because of its symptomatic treatment. However, the advantages of the Chinese Herbal Medicine Formula (CHMF) have rarely been discussed. In recent years, many scholars have conducted fundamental studies on CHMF to delay IBD from different perspectives and found that CHMF may help maintain intestinal integrity, reduce inflammation, and decrease oxidative stress, thus playing a positive role in the treatment of IBD. Therefore, this review focuses on the mechanisms associated with CHMF in IBD treatment. CHMF has apparent advantages. In addition to the exact composition and controlled quality of modern drugs, it also has multi-component and multi-target synergistic effects. CHMF has good prospects in the treatment of IBD, but its multi-agent composition and wide range of targets exacerbate the difficulty of studying its treatment of IBD. Future research on CHMF-related mechanisms is needed to achieve better efficacy.

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