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1.
Med Clin (Barc) ; 2024 Apr 29.
Artículo en Inglés, Español | MEDLINE | ID: mdl-38688732
2.
J Sci Food Agric ; 2024 Feb 28.
Artículo en Inglés | MEDLINE | ID: mdl-38415843

RESUMEN

Zinc, a crucial trace element is vital for the growth and development of humans. It is frequently described as 'the flower of life' and 'the source of intelligence'. Zinc supplements play a pivotal role in addressing zinc deficiency by serving as a vital source of this essential micronutrients, effectively replenishing depleted zinc levels in the body. In this paper, we first described the biological behavior of zinc in the human body and briefly described the physiological phenomena associated with zinc levels. The benefits and drawbacks of various zinc supplement forms are then discussed, with emphasis on the most recent zinc supplement formulations. Finally, the application of zinc supplements in food, medicine, and animal husbandry is further summarized. © 2024 Society of Chemical Industry.

3.
Environ Res ; 241: 117639, 2024 Jan 15.
Artículo en Inglés | MEDLINE | ID: mdl-37972811

RESUMEN

In this study, CuFe2O4/CuS composite photocatalysts were successfully synthesized for the activation of peroxynomosulfate to remove ciprofloxacin from wastewater. The structural composition and morphology of the materials were analyzed by XRD, SEM, TEM, and Raman spectroscopy. The electrochemical properties of the samples were tested by an electrochemical workstation. The band gap of the samples was calculated by DFT and compared with the experimental values. The effects of different catalysts, oxidant PMS concentrations, and coexisting ions on the experiments were investigated. The reusability and stability of the photocatalysts were also investigated. The mechanism of the photocatalytic degradation process was proposed based on the free radical trapping experiment. The results show that the p-p heterojunction formed between the two contact surfaces of the CuFe2O4 nanoparticle and CuS promoted the charge transfer between the interfaces and inhibited the recombination of electrons and holes. CuFe2O4-5/CuS photocatalyst has the best catalytic activity, and the removal rate of ciprofloxacin is 93.7%. The intermediates in the degradation process were tested by liquid chromatography-mass spectrometry (LC-MS), and the molecular structure characteristics of ciprofloxacin were analyzed by combining with DFT calculations. The possible degradation pathways of pollutants were proposed. This study reveals the great potential of the photocatalyst CuFe2O4/CuS in the activation of PMS for the degradation of ciprofloxacin wastewater.


Asunto(s)
Aguas Residuales , Contaminantes Químicos del Agua , Peróxidos/química , Ciprofloxacina , Contaminantes Químicos del Agua/química , Oxidantes
4.
Artículo en Inglés | MEDLINE | ID: mdl-38091059

RESUMEN

BACKGROUND: To find out the incidence and risk factors of opaque bubble layer (OBL) in eyes with myopia and myopic astigmatism following femtosecond laser-assisted in situ keratomileusis (FS-LASIK) and small incision lenticule extraction (SMILE). METHODS: A total of 1076 eyes from 569 patients who had FS-LASIK or SMILE were included in the retrospective research. For each kind of surgery, eyes were separated into two groups: "OBL" groups and "no OBL" groups. In the FS-LASIK group, eyes that developed OBL were split into "hard OBL" and "soft OBL" groups. The incidence and size of OBL were analyzed after watching the surgical procedure videotaped during the operation and taking screenshots. Surgical parameters, including sphere, cylinder, keratometry, corneal thickness, flap thickness, cap thickness, lenticule thickness, and visual acuity, were compared. RESULTS: In the FS-LASIK surgery, the incidence of OBL was 63.2% (347 eyes). A thicker central corneal thickness (CCT) was the only independent risk factor affecting the OBL area (ß = 0.126, P = 0.019). One hundred and thirty of these eyes had hard OBL, and the flap thickness of these eyes was thinner than that of those with soft OBL (P = 0.027). In the SMILE group, 26.6% (140 eyes) developed OBL. A higher flat keratometry (K) and a thicker residual stromal thickness (RST) were risk factors affecting the OBL area (ß = 0.195, P = 0.024; ß = 0.281, P = 0.001). CONCLUSION: The incidence of OBL differs between the FS-LASIK surgery and the SMILE surgery. There are differences in the factors influencing OBL between the two surgeries.

5.
J Chem Phys ; 159(21)2023 Dec 07.
Artículo en Inglés | MEDLINE | ID: mdl-38047515

RESUMEN

The research and development of absorbing materials with high absorbing capacity, wide effective absorption bandwidth, and lightweight has always been interesting. In this research, a facile hydrothermal method was used to prepare MnFe2O4, and the grain size of MnFe2O4 decreased with increasing hydrothermal temperature. When the size of MnFe2O4 nanoparticles is less than 10 nm, its quantum size effect and surface effect make its electromagnetic microwave absorption performance greatly optimized. When the thickness of MnFe2O4-110 °C is 2.57 mm, the minimum reflection loss (RLmin) is -35.28 dB. Based on this, light porous diatomite and a three-dimensional polyaniline network are introduced. Diatomite is used as the base material to effectively reduce the agglomeration of MnFe2O4 quantum dots. The relatively high surface area introduced by a three-dimensional network of polyaniline promotes the orientation, interfacial polarization, multiple relaxation, and impedance matching, thereby generating further dielectric loss. Additionally, the magnetic properties of manganese ferrite and the strong electrical conductivity of polyaniline play an appropriate complementary role in electromagnetic wave absorption. The RLmin of MnFe2O4/PANI/diatomite is -56.70 dB at 11.12 GHz with an absorber layer thickness of 2.57 mm. The effective frequency bandwidth (RL < -10 dB) ranges from 9.21 to 18.00 GHz. The absorption mechanism indicates that the high absorption intensity is the result of the synergistic effect of impedance matching, conduction losses, polarization losses, and magnetic losses.

6.
Phytother Res ; 2023 Jun 16.
Artículo en Inglés | MEDLINE | ID: mdl-37326338

RESUMEN

Cancer cells consume considerable glucose quantities and majorly employ glycolysis for ATP generation. This metabolic signature (the Warburg effect) allows cancer cells to channel glucose to biosynthesis to support and maintain their dramatic growth along with proliferation. Currently, our understanding of the metabolic and mechanistic implications of the Warburg effect along with its relationship with biosynthesis remains unclear. Herein, we illustrate that the tumor repressor p53 mediate Magnolol (MAG) triggers colon cancer cell apoptosis. And MAG regulates the glycolytic and oxidative phosphorylation steps through transcriptional modulation of its downstream genes TP53-induced glycolysis modulator and biosynthesis of cytochrome c oxidase, attenuating cell proliferation and tumor growth in vivo and in vitro. Meanwhile, we show that MAG cooperates with its own intestinal microflora characteristic metabolites to repress tumors, especially remarkably declined kynurenine (Kyn)/tryptophan (Trp) ratio. Besides, strong relationships of MAG influenced genes, microbiota, as well as metabolites, were explored. Therefore, we established that p53-microbiota-metabolites function as a mechanism, which enable therapy approaches against metabolism-implicated colorectal cancer, in particular MAG as a prospective candidate for treating colorectal cancer.

7.
Br J Radiol ; 96(1148): 20220051, 2023 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-37227804

RESUMEN

OBJECTIVE: To investigate the correlation between the risk of breast cancer for high-risk females and the density and background parenchymal enhancement (BPE) on contrast-enhanced spectral mammography (CESM). METHODS: Females at high-risk, without breast cancer history and received CESM from July 2016 to December 2017 were retrospectively enrolled. The longest follow-up time was 4.5 years, and patients who developed breast cancer with maximized follow-up time were classified as cancer cohort, while females who did not develop breast cancer were categorized as control cohort. These two cohorts were one-to-one matched in age, family and/or genetic history of breast cancer, menopausal status and BRCA status. The density and BPE at CESM imaging were assessed. Conditional logistic regression was applied to evaluate the relationship between imaging features and breast cancer risk. RESULTS: During the follow-up interval, 90 women at high-risk without history of breast cancer were newly diagnosed. Compared with minimal BPE, increasing BPE levels were associated with the risk of breast cancer among high-risk females in a time interval of 4.5 years (mild: odds ratio [OR]=3.2, p = 0.001; moderate: OR = 4.0, p = 0.002; marked: OR = 11.2, p < 0.001). In addition, females with mild, moderate or marked BPE were four times more likely to be diagnosed with breast cancer than females with minimal BPE in a time interval of 4.5 years (OR = 4.0, p < 0.001). CONCLUSION: Qualitative CESM BPE assessment may be useful in the prediction of breast cancer risk among high-risk females. ADVANCES IN KNOWLEDGE: • Qualitative CESM BPE assessment may be useful in the prediction of breast cancer risk among high-risk women during the follow-up period of 4.5 years. • The significance of breast density as an independent risk factor is not fully established for high-risk women during the follow-up period of 4.5 years.


Asunto(s)
Neoplasias de la Mama , Femenino , Humanos , Neoplasias de la Mama/diagnóstico por imagen , Estudios Retrospectivos , Mama/diagnóstico por imagen , Mamografía/métodos , Densidad de la Mama , Imagen por Resonancia Magnética/métodos
8.
BMC Ophthalmol ; 23(1): 176, 2023 Apr 24.
Artículo en Inglés | MEDLINE | ID: mdl-37095443

RESUMEN

BACKGROUND: To evaluate the prevalence and associated health and lifestyle factors of myopic maculopathy (MM) in a northern Chinese industrial city. METHODS: The cross-sectional Kailuan Eye Study included subjects who participated in the longitudinal Kailuan Study in 2016. Ophthalmologic and general examinations were performed on all the participants. MM was graded based on fundus photographs using the International Photographic Classification and Grading System. The prevalence of MM was evaluated. Univariate and multiple logistic regression were adopted to evaluated risk factors of MM. RESULTS: The study included 8330 participants with gradable fundus photographs for MM and ocular biometry data. The prevalence of MM was 1.11% (93/8330; 95% confidence interval [CI] 0.89-1.33%). Diffuse chorioretinal atrophy, patchy chorioretinal atrophy, macular atrophy, and plus lesions were observed in 72 (0.9%), 15 (0.2%), 6 (0.007%), and 32 eyes (0.4%), respectively. MM was more common in eyes with longer axial length (OR 4.517; 95%CI 3.273 to 6.235) and in participants with hypertension (OR 3.460; 95%CI 1.152 to 10.391), and older age (OR 1.084; 95%CI 1.036 to 1.134). CONCLUSIONS: The MM was present in 1.11% of the northern Chinese individuals 21 years or older and the associate factors include longer axial length, older age, and hypertension.


Asunto(s)
Degeneración Macular , Miopía Degenerativa , Degeneración Retiniana , Enfermedades de la Retina , Humanos , Agudeza Visual , Prevalencia , Estudios Transversales , China/epidemiología , Estilo de Vida , Atrofia
9.
Phytomedicine ; 109: 154600, 2023 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-36610144

RESUMEN

BACKGROUND: There is no doubt that Alzheimer's disease (AD) is one of the greatest threats facing mankind today. Within the next few decades, Acetylcholinesterase inhibitors (AChEIs) will be the most widely used treatment for Alzheimer's disease. The withdrawal of the first generation AChEIs drug Tacrine (TAC)/ Cognex from the market as a result of hepatotoxicity has always been an interesting case study. Rosmarinic acid (RA) is a natural compound of phenolic acids that has pharmacological activity for inhibiting Alzheimer's disease, as well as liver protection. PURPOSE AND STUDY DESIGN: In this study, we determined that RA can reduce the hepatotoxicity of TAC, and both of them act synergistically to inhibit the progression of AD in mice. METHODS: In addition to the wild type mice (WT) group, the 6-month-old APP/PS1 (APPswe/PSEN1dE9) double-transgenic (Tg) mice were randomly divided into 6 groups: Tg group, TAC group, RA group, TAC+Silymarin (SIL) group, TAC+RA-L (Rosmarinic Acid Low Dose) goup and TAC+RA-H (Rosmarinic Acid High Dose) group. A series of experiments were carried out, including open field test, Morris water maze test, Hematoxylin - Eosin (HE) staining, Nissl staining, biochemical analysis, immunofluorescence analysis, western blotting analysis and so on. RESULTS: RA combined with TAC could enter the brain tissue of AD mice, and the combination of drugs could better improve the cognitive behavior and brain pathological damage of AD mice, reduce the expression of A ß oligomer, inhibit the deposition of A ß, inhibit the activity of AChE and enhance the level of Ach in hippocampus. Both in vivo and in vitro experiments showed that RA could alleviate the hepatotoxicity or liver injury induced by TAC. The Western blot analysis of the liver of AD mice showed that RA combined with TAC might inhibit the apoptosis of Bcl-2/Bax, reduce the programmed apoptosis mediated by caspase-3 and reduce the burden of liver induced by TAC, could inhibit the development of liver apoptosis by alleviating the hepatotoxicity of TAC and inhibiting the phosphorylation of JNK. CONCLUSION: The potential drug combination that combines rosmarinic acid with tacrine could reduce tacrine's hepatotoxicity as well as enhance its therapeutic effect on Alzheimer's disease.


Asunto(s)
Enfermedad de Alzheimer , Enfermedad Hepática Inducida por Sustancias y Drogas , Ratones , Animales , Enfermedad de Alzheimer/metabolismo , Tacrina/farmacología , Tacrina/uso terapéutico , Acetilcolinesterasa/metabolismo , Ratones Transgénicos , Modelos Animales de Enfermedad , Péptidos beta-Amiloides , Ácido Rosmarínico
10.
Bioorg Chem ; 130: 106259, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-36375351

RESUMEN

Natural products have been an important database for anti-cancer drug development. However, low water solubility and poor biocompatibility limit the efficacy of natural products. Carbon dots (CDs), as an emerging 0D material, have unique properties in bioimaging, water solubility and biocompatibility. Here, we prepared three pentacyclic triterpenoids (PTs) included glycyrrhetinic acid (GA), ursolic acid (UA) and oleanolic acid (OA), which have anticancer activity but poor water solubility, as raw materials into CDs to improve disadvantages. Our data indicated that the active surface groups of all three CDs were largely preserved and were able to excite green fluorescence. Their carboxyl edges not only exhibited excellent water solubility, but also specifically targeted tumor cell mitochondria due to high sensitivity to ROS-induced damage and high internal oxidative stress. In cancer cells, the PT-CDs induced cell death through three pathways (apoptosis, ferroptosis, and autophagy), which is essentially the same way their raw materials induce death, but the effect was much stronger than raw materials. Notably, functionalized PT-CDs also exhibited extremely low toxicity. In summary, PT-CDs not only have improved water solubility and biocompatibility, but also retain the structure of their raw materials well and exert better efficacy, which provides new ideas for the development of anti-cancer natural product drugs.


Asunto(s)
Antineoplásicos , Puntos Cuánticos , Triterpenos , Humanos , Apoptosis/efectos de los fármacos , Autofagia/efectos de los fármacos , Productos Biológicos , Carbono/farmacología , Carbono/química , Ferroptosis/efectos de los fármacos , Mitocondrias/efectos de los fármacos , Neoplasias/tratamiento farmacológico , Triterpenos/farmacología , Triterpenos/química , Agua , Puntos Cuánticos/química , Antineoplásicos/química , Antineoplásicos/farmacología , Sistemas de Liberación de Medicamentos/métodos
11.
J Nanobiotechnology ; 20(1): 485, 2022 Nov 19.
Artículo en Inglés | MEDLINE | ID: mdl-36402976

RESUMEN

Currently, tumor treatments are characterized by intelligence, diversity and personalization, but the therapeutic reagents used are often limited in clinical efficacy due to problems with water solubility, targeting, stability and multidrug resistance. To remedy these shortcomings, the application of multifunctional nanotechnology in the biomedical field has been widely studied. Synthetic melanin nanoparticles (MNPs) surfaces which contain highly reactive chemical groups such as carboxyl, hydroxyl and amine groups, can be used as a reaction platform on which to graft different functional components. In addition, MNPs easily adhere to substrate surface, and serve as a secondary reaction platform to modify it. The multifunctionality and intrinsic biocompatibility make melanin-like nanoparticles promising as a multifunctional and powerful nanoplatform for oncological applications. This paper first reviews the preparation methods, polymerization mechanisms and physicochemical properties of melanin including natural melanin and chemically synthesized melanin to guide scholars in MNP-based design. Then, recent advances in MNPs especially synthetic polydopamine (PDA) melanin for various medical oncological applications are systematically and thoroughly described, mainly focusing on bioimaging, photothermal therapy (PTT), and drug delivery for tumor therapy. Finally, based on the investigated literature, the current challenges and future directions for clinical translation are reasonably discussed, focusing on the innovative design of MNPs and further elucidation of pharmacokinetics. This paper is a timely and comprehensive and detailed study of the progress of MNPs in tumor therapy, especially PTT, and provides ideas for the design of personalized and customizable oncology nanomedicines to address the heterogeneity of the tumor microenvironment.


Asunto(s)
Nanopartículas , Neoplasias , Humanos , Melaninas/química , Terapia Fototérmica , Nanopartículas/uso terapéutico , Nanopartículas/química , Nanomedicina , Neoplasias/tratamiento farmacológico , Microambiente Tumoral
12.
Pharmacol Res ; 181: 106257, 2022 07.
Artículo en Inglés | MEDLINE | ID: mdl-35569708

RESUMEN

Cardiac fibrosis is a pathogenic factor of many cardiovascular diseases (CVD), which seriously affects people's life and health, causing huge economic losses.Therefore, it is very significant to find an effective treatment for myocardial fibrosis. Adipokines are mainly derived from adipose tissue and have an prominent regulatory effect on glucose and lipid metabolism, inflammation, immune response and cardiovascular function. Adipose tissue is composed of a variety of cell types, including adipocytes, endothelial cells, macrophages and smooth muscle cells. Adipokines mainly include adiponectin, leptin, resistin, visfatin and omentin, which are synthesized and secreted by adipocytes. More and more evidence shows that adipokines can regulate the progress of cardiac fibrosis. This scientific review provides new ideas for targeting adipokines in the treatment of myocardial fibrosis and provides strategies for the development of new, safe, and effective pharmacological antagonists against myocardial fibrosis based on adipokines activity.


Asunto(s)
Adipoquinas , Células Endoteliales , Adipoquinas/metabolismo , Adiponectina/metabolismo , Tejido Adiposo/metabolismo , Células Endoteliales/metabolismo , Fibrosis , Humanos , Leptina , Obesidad/metabolismo
13.
ACS Appl Mater Interfaces ; 14(2): 2464-2477, 2022 Jan 19.
Artículo en Inglés | MEDLINE | ID: mdl-35045602

RESUMEN

Nanomedicine, constructed from therapeutics, presents an advantage in drug delivery for cancer therapies. However, nanocarrier-based treatment systems have problems such as interbatch variability, multicomponent complexity, poor drug delivery, and carrier-related toxicity. To solve these issues, the natural molecule honokiol (HK), an anticancer agent in a phase I clinical trial (CTR20170822), was used to form a self-assembly nanoparticle (SA) through hydrogen bonding and hydrophobicity. The preparation of SA needs no molecular precursors or excipients in aqueous solution, and 100% drug-loaded SA exhibited superior tumor-targeting ability due to the enhanced permeability and retention (EPR) effect. Moreover, SA significantly enhanced the antitumor immunity relative to free HK, and the mechanism has notable selectivity to the p53 pathway. Furthermore, SA exhibited excellent physiological stability and inappreciable toxicity. Taken together, this supramolecular self-assembly strategy provides a safe and "molecular economy" model for rational design of clinical therapies and is expected to promote targeted therapy of HK, especially in colorectal cancer patients with obvious p53 status.


Asunto(s)
Antineoplásicos Fitogénicos/farmacología , Materiales Biocompatibles/farmacología , Compuestos de Bifenilo/farmacología , Neoplasias Colorrectales/terapia , Inmunoterapia , Lignanos/farmacología , Bibliotecas de Moléculas Pequeñas/farmacología , Proteína p53 Supresora de Tumor/antagonistas & inhibidores , Animales , Antineoplásicos Fitogénicos/síntesis química , Antineoplásicos Fitogénicos/química , Materiales Biocompatibles/síntesis química , Materiales Biocompatibles/química , Compuestos de Bifenilo/síntesis química , Compuestos de Bifenilo/química , Neoplasias Colorrectales/inmunología , Femenino , Humanos , Lignanos/síntesis química , Lignanos/química , Sustancias Macromoleculares/síntesis química , Sustancias Macromoleculares/química , Ensayo de Materiales , Ratones , Ratones Endogámicos BALB C , Ratones Desnudos , Estructura Molecular , Neoplasias Experimentales/inmunología , Neoplasias Experimentales/terapia , Bibliotecas de Moléculas Pequeñas/síntesis química , Bibliotecas de Moléculas Pequeñas/química , Células Tumorales Cultivadas , Proteína p53 Supresora de Tumor/inmunología
14.
Pharmacol Res ; 177: 106013, 2022 03.
Artículo en Inglés | MEDLINE | ID: mdl-34856333

RESUMEN

Ferroptosis is a type of lipid peroxidation-induced cell death that can be regulated in various ways, from changing the activity of antioxidant enzymes to the levels of transcription factors. The p53 tumor suppressor gene is the "guardian of the genome" and is involved in controlling cell survival and division under various pressures. In addition to its effects on apoptosis, autophagy, and cell cycle, p53, through the way of transcription dependent or independent two-way, also regulates the biological processes of tumor cell sensitivity to ferroptosis, including the metabolism of amino acids, nicotinamide adenine dinucleotide phosphate, and lipid peroxidation, as well as the biosynthesis of glutathione, phospholipids, NADPH and coenzyme Q10. As reviewed here, we summarized the metabolic network of p53 and its signaling pathway in regulating ferroptosis and elucidated possible factors and potential clinical application of p53 regulating ferroptosis. This review will provide a basis for further understanding the role of p53 in tumor ferroptosis and new strategies for cancer therapeutic avenues.


Asunto(s)
Ferroptosis , Neoplasias , Apoptosis , Humanos , Peroxidación de Lípido , NADP/metabolismo , Neoplasias/tratamiento farmacológico , Neoplasias/genética , Neoplasias/metabolismo , Proteína p53 Supresora de Tumor/genética , Proteína p53 Supresora de Tumor/metabolismo
15.
Life Sci ; 286: 120048, 2021 Dec 01.
Artículo en Inglés | MEDLINE | ID: mdl-34655604

RESUMEN

AIMS: Clinically, Cerebralcare Granule® (CG) has been widely utilized to treat various types of headache, chronic cerebral insufficiency and other diseases, and the effect is significant. Clinical studies have shown that CG can significantly relieve vascular dementia (VaD), however, the molecular mechanisms haven't been established. To clear the therapeutic mechanisms of CG against VaD, a hypothesis was proposed that CG could treat neurovascular injury by inhibiting the production of lipocalin-2 (LCN 2). MAIN METHODS: 90 dementia rats were selected by water maze test and randomly divided into 6 groups, including nimodipine (NM), CG L (low dose) (0.314 g kg-1), CG H (high dose) (0.628 g kg-1), and combined group (CG + NM). And in vitro neuronal cell OGD modeling to evaluate the effect of CG on JAK2/STAT3. KEY FINDINGS: CG could significantly shorten the escape latency of two-vessel occlusion (2-VO) rats, increase their exploratory behavior, alleviate the symptoms of VaD and improve the ultrastructural pathological damage of neurovascular unit and accelerate the recovery of cerebral blood perfusion. CG combined with NM is better than NM alone. It was further showed that CG could inhibit the pathogenicity of LCN 2 through JAK2/STAT3 pathway and suppress the production of inflammatory cytokines. It plays a role in the protection of cerebral microvasculature and BBB in 2-VO rats. SIGNIFICANCE: Taken together, there data has supported notion that CG can protect the integrity of cerebral blood vessels and BBB and improve cognitive impairment through mainly inhibiting LCN 2, which provides scientific evidence for clinical application.


Asunto(s)
Disfunción Cognitiva/tratamiento farmacológico , Medicamentos Herbarios Chinos/metabolismo , Lipocalina 2/metabolismo , Animales , Arterias Carótidas/efectos de los fármacos , China , Disfunción Cognitiva/fisiopatología , Demencia Vascular/prevención & control , Modelos Animales de Enfermedad , Medicamentos Herbarios Chinos/farmacología , Lipocalina 2/fisiología , Masculino , Aprendizaje por Laberinto/efectos de los fármacos , Fármacos Neuroprotectores/farmacología , Nimodipina/metabolismo , Nimodipina/farmacología , Ratas , Ratas Sprague-Dawley
16.
Ann Palliat Med ; 10(9): 9398-9405, 2021 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-34628865

RESUMEN

BACKGROUND: A peripherally inserted central catheter (PICC) effectively reduces frequent vein punctures in cancer patients. With increasing clinical applications, PICC-associated infections are attracting increasing attention. In this study, we retrospectively analyzed PICC-associated infections in chemotherapy patients treated at our hospital in recent years to identify risk factors for PICC-associated infections and the preventive effect of a self-efficacy intervention program. METHODS: Using a convenience sampling method, we selected 159 cancer patients who received chemotherapy through a PICC at our hospital between July 2017 and December 2018, and the patients were randomly divided to an observation group (n=79) and a control group (n=80) using a random number table. The control group received conventional intervention, and the observation group received a self-efficacy intervention. We analyzed self-efficacy scores before and after the intervention, the complication rate, the infection rate, pathogens identified, and risk factors for PICC-associated infections. RESULTS: Among the 159 chemotherapy patients, 26 (16.35%) experienced PICC-associated infections in this finished trial. Univariate analysis showed that sex, puncture site, and steroid use were unrelated to PICC-associated infections (P>0.05), whereas PICC indwelling time, white blood cell (WBC) count, a history of diabetes, and immunity were significantly related to PICC-associated infections (P<0.05). The self-efficacy score improved after the intervention in both groups, especially in the observation group (P<0.05). The incidence of complications such as catheter infection, catheter blockage, and catheter displacement was significantly lower in the observation group than in the control group (16. 67% vs. 88.10%; P<0.05). CONCLUSIONS: The self-efficacy intervention improves self-management and reduces complications in cancer patients receiving chemotherapy through a PICC. PICC indwelling time, WBC count, a history of diabetes, and immunity are independent risk factors for PICC-associated infections; thus, measures should be implemented to prevent infections. TRIAL REGISTRATION: Chinese Clinical Trial Registry ChiCTR2100050651.


Asunto(s)
Cateterismo Venoso Central , Autoeficacia , Cateterismo Venoso Central/efectos adversos , Catéteres , Humanos , Estudios Retrospectivos , Factores de Riesgo
17.
Front Pharmacol ; 12: 719532, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34630097

RESUMEN

Yiqi Fumai lyophilized injection (YQFM) is the recombination of Sheng mai san (SMS).YQFM has been applied clinically to efficaciously and safely treat chronic heart failure (CHF). However, the mechanism of YQFM is still not fully elucidated. The purpose of our study was to investigate the protective mechanism of YQFM against abdominal aortic coarctation (AAC) in rats by proteomic methods. After YQFM treatment, the cardiac function were obviously meliorated. One hundred and fifty-seven important differentially expressed proteins (DEPs) were identified, including 109 in model rat compared with that in control rat (M:C) and 48 in YQFM-treated rat compared with that in model rat (T:M) by iTRAQ technology to analyze the proteomic characteristics of heart tissue. Bioinformatics analysis showed that DEPs was mainly involved in the body's energy metabolism and was closely related to oxidative phosphorylation. YQFM had also displayed efficient mitochondrial dysfunction alleviation properties in hydrogen peroxide (H2O2)-induced cardiomyocyte damage by Transmission Electron Microscope (TEM), Metabolic assay, and Mitotracker staining. What's more, the levels of total cardiomyocyte apoptosis were markedly reduced following YQFM treatment. Furthermore, Western blot analysis showed that the expressions of peroxisome proliferator activated receptor co-activator-1α(PGC-1α) (p < 0.01 or p < 0.001), perixisome proliferation-activated receptor alpha (PPAR-α) (p < 0.001)and retinoid X receptor alpha (RXR-α) were upregulated (p < 0.001), PGC-1α as well as its downstream effectors were also found to be upregulated in cardiomyocytes after YQFM treatment(p < 0.001).These results provided evidence that YQFM could enhance mitochondrial function of cardiomyocytes to play a role in the treatment of CHF by regulating mitochondrial biogenesis-related proteins.

19.
Pharmacol Res ; 170: 105756, 2021 08.
Artículo en Inglés | MEDLINE | ID: mdl-34237440

RESUMEN

Chronic Cerebral Hypoperfusion(CCH)-induced vascular dementia(VD) is a common neurodegenerative disease which seriously affects the patient's quality of life. Therefore, it is critical to find an effective treatment of VD. Autophagy is a natural regulated mechanism that can remove dysfunctional proteins and organelles, however, over-activation or under-activation can of autophagy can induce the apoptosis of cells. Although autophagy plays a role in the central nervous system is unquestionable, the effects of autophagy in the ischemic brain are still controversial. Some autophagy regulators have been tested, suggesting that both activation and inhibition of autophagy can improve the cognitive function. This article reviews the role of autophagy in CCH-induced VD to discuss whether autophagy has the potential to become a target for drug development and provides several potential compounds for treating vascular dementia.


Asunto(s)
Autofagia/efectos de los fármacos , Productos Biológicos/uso terapéutico , Encéfalo/efectos de los fármacos , Demencia Vascular/tratamiento farmacológico , Animales , Apoptosis/efectos de los fármacos , Proteínas Reguladoras de la Apoptosis/metabolismo , Proteínas Relacionadas con la Autofagia/metabolismo , Productos Biológicos/efectos adversos , Encéfalo/metabolismo , Encéfalo/patología , Circulación Cerebrovascular , Demencia Vascular/metabolismo , Demencia Vascular/patología , Demencia Vascular/fisiopatología , Humanos , Transducción de Señal
20.
Chin Med ; 16(1): 47, 2021 Jun 28.
Artículo en Inglés | MEDLINE | ID: mdl-34183022

RESUMEN

BACKGROUND: Alzheimer's disease (AD) is a progressive neurodegenerative disease characterized by memory deficits and cognitive decline. Current drugs can only relieve symptoms, but cannot really cure AD. Cerebralcare Granule® (CG) is a Traditional Chinese medicine (TCM) containing a variety of biologically active compounds. In our previous studies, CG has shown a beneficial effect against memory impairment in mice caused by D-galactose. However, whether CG can be used as a complementary medicine for the treatment of AD remains unexplored. Here, we use a combination of CG and memantine hydrochloride (Mm) to treat Alzheimer-like pathology and investigate the effects and mechanisms in vivo. METHODS: The histology of brain was examined with Hematoxylin-eosin (HE) staining, Golgi staining and Thioflavin S staining. ELISA was applied to assess the expression levels or activities of CAT, SOD, GSH-Px, MDA, alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), total bilirubin (TBIL) in serum, as well as the levels of IL-6, IL-1ß, and TNF-α in the mice brain. Western blotting was used to assess the expression of ß-secretase (BACE1), amyloid precursor protein (APP), APPß, APPα, synaptophysin (SYN), growth-associated protein 43 (GAP43), and postsynaptic density 95 (PSD95). RESULTS: In the present study, the combination group (CG + Mm) significantly attenuated Alzheimer-like behavior without adverse effects in APP/PS1 mice, indicating its high degree of safety and efficacy after long-term treatment. CG + Mm reduced AD pathological biomarker Aß plaque accumulation by inhibiting BACE1 and APP expression (P < 0.05 or P < 0.001). Besides, the combination group markedly inhibited the levels of IL-1ß, IL-6, and TNF-α in hippocampus (P < 0.001), as well as activities of SOD, CAT, and GSH-Px in serum (P < 0.001). By contrast, the combination group improved synaptic plasticity by enhancing SYN, PSD95, and GAP43 expression. CONCLUSIONS: Taken together, these data supported the notion that CG combined with Mm might ameliorate the cognitive impairment through multiple pathways, suggesting that CG could play a role as complementary medicine to increase anti-AD effect of chemical drugs by reducing Aß deposition, neuroinflammation, oxidative damage, and improving synaptic plasticity.

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