Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 9 de 9
Filter
Add more filters










Database
Language
Publication year range
1.
Nutrients ; 16(9)2024 Apr 30.
Article in English | MEDLINE | ID: mdl-38732614

ABSTRACT

The incidence of ulcerative colitis (UC) is increasing annually, and UC has a serious impact on patients' lives. Polysaccharides have gained attention as potential drug candidates for treating ulcerative colitis (UC) in recent years. Huaier (Trametes robiniophila Murr) is a fungus that has been used clinically for more than 1000 years, and its bioactive polysaccharide components have been reported to possess immunomodulatory effects, antitumour potential, and renoprotective effects. In this study, we aimed to examine the protective effects and mechanisms of Huaier polysaccharide (HP) against UC. Based on the H2O2-induced oxidative stress model in HT-29 cells and the dextran sulphate sodium salt (DSS)-induced UC model, we demonstrated that Huaier polysaccharides significantly alleviated DSS-induced colitis (weight loss, elevated disease activity index (DAI) scores, and colonic shortening). In addition, HP inhibited oxidative stress and inflammation and alleviated DSS-induced intestinal barrier damage. It also significantly promoted the expression of the mucin Muc2. Furthermore, HP reduced the abundance of harmful bacteria Escherichia-Shigella and promoted the abundance of beneficial bacteria Muribaculaceae_unclassified, Anaerotruncus, and Ruminococcaceae_unclassified to regulate the intestinal flora disturbance caused by DSS. Nontargeted metabolomics revealed that HP intervention would modulate metabolism by promoting levels of 3-hydroxybutyric acid, phosphatidylcholine (PC), and phosphatidylethanolamine (PE). These results demonstrated that HP had the ability to mitigate DSS-induced UC by suppressing oxidative stress and inflammation, maintaining the intestinal barrier, and modulating the intestinal flora. These findings will expand our knowledge of how HP functions and offer a theoretical foundation for using HP as a potential prebiotic to prevent UC.


Subject(s)
Dextran Sulfate , Gastrointestinal Microbiome , Oxidative Stress , Polysaccharides , Gastrointestinal Microbiome/drug effects , Oxidative Stress/drug effects , Animals , Humans , Polysaccharides/pharmacology , Mice , Male , Colitis, Ulcerative/chemically induced , Colitis, Ulcerative/drug therapy , Colitis, Ulcerative/microbiology , Disease Models, Animal , Inflammation/drug therapy , Intestinal Mucosa/drug effects , Intestinal Mucosa/metabolism , Intestinal Mucosa/microbiology , HT29 Cells , Mice, Inbred C57BL , Colitis/chemically induced , Colitis/drug therapy
2.
World J Clin Cases ; 12(10): 1733-1741, 2024 Apr 06.
Article in English | MEDLINE | ID: mdl-38660074

ABSTRACT

BACKGROUND: Diabetic patients with cataracts encounter specific difficulties during cataract surgery due to alterations in microcirculation, blood supply, metabolism, and the microenvironment. Traditional phacoemulsification may not fully tackle these issues, especially in instances with substantial preoperative astigmatism. The utilization of femtosecond laser-assisted phacoemulsification, in conjunction with Toric intraocular lens (IOL) implantation, offers a potentially more efficient strategy. This research seeks to evaluate the efficacy and possible complications of this approach in diabetic cataract patients. AIM: To investigate the clinical efficacy and complications of femtosecond laser-assisted phacoemulsification combined with Toric IOL implantation in diabetic cataract patients, comparing it with traditional phacoemulsification methods. METHODS: This retrospective study enrolled 120 patients with diabetes cataract from May 2019 to May 2021. The patients were divided into two groups: the control group underwent traditional phacoemulsification and Toric IOL implantation, while the treatment group received Len Sx femtosecond laser-assisted treatment. Outcome measures included naked eye vision, astigmatism, high-level ocular phase difference detection, clinical efficacy, and complication. RESULTS: There were no significant preoperative differences in astigmatism or naked eyesight between the two groups. However, postoperative improvements were observed in both groups, with the treatment group showing greater enhancements in naked eye vision and astigmatism six months after the procedure. High-level corneal phase difference tests also indicated significant differences in favor of the treatment group. CONCLUSION: This study suggests that femtosecond laser-assisted phacoemulsification combined with Toric IOL implantation appears to be more effective in enhancing postoperative vision in diabetic cataract patients compared to traditional methods offering valuable insights for clinical practice.

3.
J Agric Food Chem ; 71(13): 5391-5402, 2023 Apr 05.
Article in English | MEDLINE | ID: mdl-36971245

ABSTRACT

Drought adaptation of plants is closely related to resistance and tolerance to drought stress as well as the ability to recover after the elimination of the stress. Glycyrrhiza uralensis Fisch is a commonly applied herb whose growth and development are greatly affected by drought. Here, we provide the first comprehensive analysis of the transcriptomic, epigenetic, and metabolic responses of G. uralensis to drought stress and rewatering. The hyper-/hypomethylation of genes may lead to up-/downregulated gene expression, and epigenetic changes can be regarded as an important regulatory mechanism of G. uralensis under drought stress and rewatering. Moreover, integrated transcriptome and metabolome analysis revealed that genes and metabolites involved in pathways of antioxidation, osmoregulation, phenylpropanoid biosynthesis, and flavonoid biosynthesis may regulate the drought adaptation of G. uralensis. This work provides crucial insights into the drought adaptation of G. uralensis and offers epigenetic resources for cultivating G. uralensis with high drought adaptation.


Subject(s)
Glycyrrhiza uralensis , Glycyrrhiza , Glycyrrhiza uralensis/genetics , Glycyrrhiza uralensis/metabolism , Multiomics , Droughts , Antioxidants/metabolism , Transcriptome , Glycyrrhiza/genetics
4.
Oxid Med Cell Longev ; 2022: 6208872, 2022.
Article in English | MEDLINE | ID: mdl-35620581

ABSTRACT

With the development of industrialization in recent years, infrasound has become an important component of public noise. To date, diverse studies have revealed the negative effects of infrasound on the central nervous system (CNS), especially the learning and memory ability. It is widely reported that environmental enrichment (EE) ameliorates the learning and memory deficits in different models of brain injury. Therefore, the present study was designed to determine the possible benefits of pre-exposure to EE in preventing functional deficits following infrasound exposure and their related mechanism. Adult male rats were given enriched or standard housing for 30 days. Following enrichment, the rats were exposed to 16 Hz, 130 dB infrasound for 14 days, and then their learning and memory ability was assessed. Changes to neuroinflammation, apoptosis, and oxidative stress in the hippocampus were also detected. Our results showed that the infrasound-induced deficit in learning and memory was attenuated significantly in EE pre-exposed rats. Pre-exposure to EE could induce a decrease in proinflammatory cytokines and increased anti-inflammatory cytokines and antioxidant properties in the hippocampus. Moreover, pre-exposure to EE also exerted antiapoptosis functions by upregulating the B-cell lymphoma/leukemia-2 (Bcl-2) level and downregulating the P53 level in the hippocampus. In conclusion, the results of the present study suggested that EE is neuroprotective when applied before infrasound exposure, resulting in an improved learning and memory ability by enhancing antioxidant, anti-inflammatory, and antiapoptosis capacities.


Subject(s)
Antioxidants , Memory Disorders , Animals , Cytokines , Hippocampus , Learning , Male , Memory Disorders/etiology , Rats
5.
J Integr Neurosci ; 22(1): 5, 2022 Nov 29.
Article in English | MEDLINE | ID: mdl-36722228

ABSTRACT

BACKGROUND: One of the most serious complications of sepsis is sepsis-associated encephalopathy (SAE), which impairs the cognition ability of survivors. Environmental enrichment (EE) has been demonstrated to alleviate cognition deficits under many kinds of brain injury conditions. However, EE's effects on SAE remain unknown. Therefore, this study aimed to determine EE's effect on cognition disorders under SAE conditions and the underlying mechanism. MATERIALS AND METHODS: Adult male rats, subject to SAE or not, were housed under a standard environment (SE) or EE for 30 days. Subsequently, the rats were subjected to cognitive tests, such as the novel object recognition (NOR) test, the Morris water maze (MWM) test, an Open Field (OF) test, the elevated plus maze (EPM) test, and a sensory neglect (SN) test. Neuroinflammation, apoptosis, and oxidative stress changes in the brain were also detected. RESULTS: The results revealed that SAE impaired somatesthesia, recognition memory, spatial learning and memory, and exploratory activity, which were significantly improved by EE housing. EE also prevented SAE-induced anxiety-like behavior. In addition, EE housing capable induced a decrease in pro-inflammatory cytokines, and an increase in anti-inflammatory cytokines and antioxidant properties in the brain. Moreover, EE housing exerted an anti-apoptosis function by upregulating the level of B-cell lymphoma/leukemia-2 (Bcl-2) level and downregulating the level of p53 level in the hippocampus. CONCLUSIONS: The results of the present study indicated that EE exerts a neuroprotective function on cognitive ability in SAE rats. The effect is achieved by increasing antioxidants, and anti-inflammatory and antiapoptotic capacities. EE can effectively rescue SAE-induced cognitive deficits.


Subject(s)
Brain Diseases , Cognition Disorders , Cognitive Dysfunction , Sepsis-Associated Encephalopathy , Male , Animals , Rats , Sepsis-Associated Encephalopathy/etiology , Sepsis-Associated Encephalopathy/prevention & control , Cognitive Dysfunction/etiology , Cognitive Dysfunction/prevention & control , Cognition , Brain Diseases/etiology , Brain Diseases/prevention & control , Antioxidants , Cytokines
6.
Medicine (Baltimore) ; 100(25): e26358, 2021 Jun 25.
Article in English | MEDLINE | ID: mdl-34160407

ABSTRACT

ABSTRACT: To compare the clinical efficacy of sodium hyaluronate eye drops, polyethylene glycol eye drops, and compound dextran eye drops in the treatment of dry eye after phacoemulsification of cataract.A total of 99 patients with dry eye after cataract phacoemulsification combined with intraocular lens implantation were treated in our hospital. Patients were divided into group A (sodium hyaluronate eye drops), group B (polyethylene glycol eye drops), and group C (dextran-70 eye drops). The clinical effect, tear film breakup time, basic tear secretion, corneal staining score, dry eye symptom score, and the incidence of ocular irritation were assessed.On the 3rd, 15th, 30th, and 60th day after operation, the tear film breakup time, corneal staining score, Schirmer I test, and dry eye symptom score in group A and group B were better than those in group C (P < .05). In addition, there were no significant differences in tear breakdown time, corneal staining score, Schirmer I test, and dry eye symptom score between group A and group B (P > .05). At 3 days to 60 days after operation, the incidence of dry eye in group A (12.12%) and group B (18.18%) was lower than that in group C (39.39%), and the incidence of dry eye in group A was significantly lower than that in group B (P < .05).The effect of sodium hyaluronate eye drops elicited a greater beneficial impact as compared to polyethylene glycol eye drops and dextran-70 eye drops.


Subject(s)
Dextrans/administration & dosage , Hyaluronic Acid/administration & dosage , Phacoemulsification/adverse effects , Polyethylene Glycols/administration & dosage , Postoperative Complications/drug therapy , Xerophthalmia/drug therapy , Aged , Female , Humans , Incidence , Male , Middle Aged , Ophthalmic Solutions/administration & dosage , Postoperative Complications/diagnosis , Postoperative Complications/epidemiology , Postoperative Complications/etiology , Severity of Illness Index , Treatment Outcome , Xerophthalmia/diagnosis , Xerophthalmia/epidemiology , Xerophthalmia/etiology
7.
Ann Hematol ; 99(3): 539-547, 2020 Mar.
Article in English | MEDLINE | ID: mdl-31953585

ABSTRACT

Macrophages within tissues display a strong plastic ability in respond to environmental cues in both physiologic influences and disease. However, the macrophage phenotype and its distribution in the bone marrow biopsies (BMB) samples of human acute leukemia (AL) remain poorly understood. In this study, 97 BMB samples of patients with acute leukemia and 30 iron-deficiency anemias (IDA) as control group were evaluated with immunohistochemistry. In comparison with controls, the counts of CD68+, CD163+, and CD206+macrophages were remarkably increased in BMB samples of acute leukemia (P < 0.01), as well as their infiltration density was roaring up-regulation (P < 0.01). The expression levels of CD68+, CD163+, and CD206+macrophages were decreased in patients with complete remission, but there still existed statistically significant contrast to the control group (P < 0.01). The ratios of the CD163-positive cells or CD206-positive cells to CD68-positive cells were most prevalent in the BMB samples of human acute leukemia compared with the control group (P < 0.01), which support that macrophages were polarized to M2 macrophages.


Subject(s)
Antigens, Differentiation/metabolism , Bone Marrow , Leukemia , Macrophages , Neoplasm Proteins/metabolism , Acute Disease , Adolescent , Adult , Aged , Biopsy , Bone Marrow/metabolism , Bone Marrow/pathology , Female , Humans , Leukemia/metabolism , Leukemia/pathology , Macrophages/metabolism , Macrophages/pathology , Male , Middle Aged
8.
Chem Biodivers ; 11(1): 85-91, 2014 Jan.
Article in English | MEDLINE | ID: mdl-24443428

ABSTRACT

Four ardeemin derivatives, 5-N-acetylardeemin (1), 5-N-acetyl-15bß-hydroxyardeemin (2), 5-N-acetyl-15b-didehydroardeemin (3), and 5-N-acetyl-16α-hydroxyardeemin (4), were isolated from the fermentation broth of an endophytic Aspergillus fumigatus SPS-02 associated with Artemisia annua L. The structures of these metabolites were elucidated by a combination of spectroscopic data, including 1D-, 2D-NMR and MS. In vitro chemosensitization assay indicated that these ardeemins had different activities of reversing the multidrug-resistant (MDR) phenotype in three cancer cell lines, leukemia doxorubicin resistant cell K562/DOX, human lung adenocarcinoma cis-platin-resistant cell A549/DDP, and ovarian cancer cisplatin-resistant cell SK-OV-S/DDP. Compound 4 exhibited the strongest MDR reversing effect at 5 µM concentration in K562/DOX and A549/DDP cell lines 5.2±0.18-fold, 8.2±0.23-fold, respectively, while compound 2 had the highest reversal capacity in SK-OV-S/DDP cell line with 10.8±0.28 fold. Preliminary investigation of their structureactivity relationship suggested that a OH group at C(15b) or C(16) in ardeemin plays a key role in reversing the MDR effect. It is the first report on ardeemin analogs from endophytic A. fumigatus with reversal effects on MDR cancer cell lines K562/DOX, A549/DDP and SK-OV-S/DDP.


Subject(s)
Antineoplastic Agents, Phytogenic/chemistry , Antineoplastic Agents, Phytogenic/pharmacology , Aspergillus fumigatus/chemistry , Drug Resistance, Multiple/drug effects , Drug Resistance, Neoplasm/drug effects , Indole Alkaloids/chemistry , Neoplasms/drug therapy , Antineoplastic Agents, Phytogenic/isolation & purification , Cell Line, Tumor , Cell Proliferation/drug effects , Dose-Response Relationship, Drug , Drug Screening Assays, Antitumor , Humans , Indole Alkaloids/pharmacology , K562 Cells , Molecular Conformation , Neoplasms/pathology , Structure-Activity Relationship
9.
Comput Math Methods Med ; 2013: 989307, 2013.
Article in English | MEDLINE | ID: mdl-23533546

ABSTRACT

Kawasaki disease (KD) is a complex disease, leading to the damage of multisystems. The pathogen that triggers this sophisticated disease is still unknown since it was first reported in 1967. To increase our knowledge on the effects of genes in KD, we extracted statistically significant genes so far associated with this mysterious illness from candidate gene studies and genome-wide association studies. These genes contributed to susceptibility to KD, coronary artery lesions, resistance to initial IVIG treatment, incomplete KD, and so on. Gene ontology category and pathways were analyzed for relationships among these statistically significant genes. These genes were represented in a variety of functional categories, including immune response, inflammatory response, and cellular calcium ion homeostasis. They were mainly enriched in the pathway of immune response. We further highlighted the compelling immune pathway of NF-AT signal and leukocyte interactions combined with another transcription factor NF- κ B in the pathogenesis of KD. STRING analysis, a network analysis focusing on protein interactions, validated close contact between these genes and implied the importance of this pathway. This data will contribute to understanding pathogenesis of KD.


Subject(s)
Gene Regulatory Networks , Genetic Predisposition to Disease , Metabolic Networks and Pathways , Mucocutaneous Lymph Node Syndrome/physiopathology , Child , Computational Biology/methods , Databases, Genetic , Genome-Wide Association Study , Humans , Inflammation , Leukocytes/cytology , Linkage Disequilibrium , Models, Statistical , NF-kappa B/metabolism , NFATC Transcription Factors/metabolism , Polymorphism, Single Nucleotide , Signal Transduction
SELECTION OF CITATIONS
SEARCH DETAIL
...