Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 1.556
Filter
1.
J Vis Exp ; (207)2024 May 10.
Article in English | MEDLINE | ID: mdl-38801264

ABSTRACT

The treatment of severe acute pancreatitis (SAP), with high mortality rates, poses a significant clinical challenge. Investigating the pathological changes associated with SAP using animal models can aid in identifying potential therapeutic targets and exploring novel treatment approaches. Previous studies primarily induced pancreatic injury through retrograde bile duct injection of sodium taviaurocholate, but the impact of surgical damage on the quality of the animal model remains unclear. In this study, we employed various frequencies of intraperitoneal Caerulein injections combined with different doses of LPS to induce pancreatic injury in C57BL/6J mice and compared the extent of injury across five intraperitoneal injection protocols. Regarding inducing acute pancreatitis in mice, an intraperitoneal injection protocol is proposed that results in a mortality rate as high as 80% within 5 days. Specifically, mice received ten daily intraperitoneal injections of Caerulein (50 µg/kg), followed by an injection of LPS (15 mg/kg) one hour after the last Caerulein administration. By adjusting the frequency and dosage of injected medications, one can manipulate the severity of pancreatic injury effectively. This model exhibits strong controllability and has a short replication cycle, making it feasible for completion by a single researcher without requiring expensive equipment. It conveniently and accurately simulates key disease characteristics observed in human SAP while demonstrating a high degree of reproducibility.


Subject(s)
Ceruletide , Disease Models, Animal , Lipopolysaccharides , Mice, Inbred C57BL , Pancreatitis , Animals , Mice , Pancreatitis/pathology , Lipopolysaccharides/administration & dosage , Lipopolysaccharides/toxicity , Injections, Intraperitoneal , Male , Acute Disease
2.
Telemed J E Health ; 2024 May 16.
Article in English | MEDLINE | ID: mdl-38754136

ABSTRACT

Background: Structural social determinants of health have an accumulated negative impact on physical and mental health. Evidence is needed to understand whether emerging health information technology and innovative payment models can help address such structural social determinants for patients with complex health needs, such as Alzheimer's disease and related dementias (ADRD). Objective: This study aimed to test whether telehealth for care coordination and Accountable Care Organization (ACO) enrollment for residents in the most disadvantaged areas, particularly those with ADRD, was associated with reduced Medicare payment. Methods: The study used the merged data set of 2020 Centers for Medicare and Medicaid Services Medicare inpatient claims data, the Medicare Beneficiary Summary File, the Medicare Shared Savings Program ACO, the Center for Medicare and Medicaid Service's Social Vulnerability Index (SVI), and the American Hospital Annual Survey. Our study focused on community-dwelling Medicare fee-for-service beneficiaries aged 65 years and up. Cross-sectional analyses and generalized linear models (GLM) were implemented. Analyses were implemented from November 2023 to February 2024. Results: Medicare fee-for-service beneficiaries residing in SVI Q4 (i.e., the most vulnerable areas) reported significantly higher total Medicare costs and were least likely to be treated in hospitals that provided telehealth post-discharge services or have ACO affiliation. Meanwhile, the proportion of the population with ADRD was the highest in SVI Q4 compared with other SVI levels. The GLM regression results showed that hospital telehealth post-discharge infrastructure, patient ACO affiliation, SVI Q4, and ADRD were significantly associated with higher Medicare payments. However, coefficients of interaction terms among these factors were significantly negative. For example, the average interaction effect of telehealth post-discharge and ACO, SVI Q4, and ADRD on Medicare payment was -$1,766.2 (95% confidence interval: -$2,576.4 to -$976). Conclusions: Our results suggested that the combination of telehealth post-discharge and ACO financial incentives that promote care coordination is promising to reduce the Medicare cost burden among patients with ADRD living in socially vulnerable areas.

3.
Spectrochim Acta A Mol Biomol Spectrosc ; 314: 124199, 2024 Jun 05.
Article in English | MEDLINE | ID: mdl-38555822

ABSTRACT

A series of "turn off" pH fluorescence probes with chalcone skeleton for basic system have been developed. The molecules emitted bright yellow fluorescence under acidic condition, resulting AIE coupled ESIPT characteristic and ICT process. What's more, the compounds exhibited excellent sensitivity and selectivity for detecting pH as a facile "On-Off" fluorescence probe, and the fluorescence of them were quenched with the ESIPT process interrupted under alkaline condition. Theoretical calculation for the related compounds also performed to verify the electron effect on photophysical properties and confirm the rational speculation on the mechanism.

4.
Rev Sci Instrum ; 95(3)2024 Mar 01.
Article in English | MEDLINE | ID: mdl-38441424

ABSTRACT

On-line monitoring of membrane fouling is essential in the water treatment process. Drawbacks such as low-sensitivity and off-line limitations limit the application of existing methods. An on-line monitoring method based on Electrical Resistance Tomography (ERT) sensors is put forward in this paper. The Particle Swarm Optimization with Simulated Annealing (PSO-SA) algorithm is used in optimizing the topologies of finite element models in order to decrease the ill-posedness of sensitivity matrices. The deep denoising extreme learning machine with an auto-encoder model and the K-singular value decomposition algorithm are used in ERT reconstruction to improve imaging quality. The lift-wavelet is adopted in measuring the permeate flux to improve measuring accuracy. The ERT pixel values of the membrane module and the result of flux are used to analyze the fouling status. The results of membrane fouling experiments demonstrate the following: (1) Based on the local ERT pixels, the "two stage" phenomenon of membrane fouling can be observed. (2) In the early stage, the fouling distribution of the localized membrane module is consistent with its ERT pixels. (3) The deposition process of foulants for the localized membrane module is synchronized with the variation of ERT pixels. (4) The integrity of the membrane module can be detected according to the ERT pixels. Therefore, the novel method can effectively reflect the membrane fouling process, especially in the early stages of membrane fouling.

5.
J Plast Surg Hand Surg ; 59: 18-23, 2024 Feb 04.
Article in English | MEDLINE | ID: mdl-38311891

ABSTRACT

AIM: To investigate surgical treatment, postoperative rehabilitation and prevention of heterotopic ossification (HO) in patients with post-traumatic elbow stiffness. METHODS: We performed a retrospective review of patients with post-traumatic elbow stiffness combined with HO between 2007 and 2021. This study was performed on a total of 15 patients (18 elbows) admitted to our hospital, consisting of 12 males and 3 females, with post-traumatic stiffness of the elbow combined with HO, where elbow function could not be recovered by rehabilitation and orthosis treatment. Fifteen patients were treated by surgical excision of heterotopic bones and release of elbow contracture combined with postoperative rehabilitation and orthosis-wearing. Comprehensive treatments, including radiation, oral ibuprofen medication, and manipulation techniques to improve range of motion, were used to prevent HO recurrence. The flexion-extension arc and functional score of the elbow were measured after treatment and compared with the preoperative measurements. Roentgenography was used to observe HO recurrence. RESULTS: After surgical treatment and postoperative rehabilitation, the patients' range of motion improved, and the functional score improved considerably. The postoperative flexion-extension arc and The Hospital for Special Surgery (HSS) functional score were statistically significantly higher than the preoperative values (p < 0.01). Roentgenographic examination showed no HO recurrence during the follow-up period. CONCLUSION: Surgical excision of heterotopic bones and elbow contracture release combined with postoperative rehabilitation and preventative HO measures can be an effective treatment for cases of post-traumatic elbow stiffness combined with HO, for which conservative treatment is ineffective.


Subject(s)
Contracture , Elbow Injuries , Elbow Joint , Ossification, Heterotopic , Male , Female , Humans , Elbow , Retrospective Studies , Treatment Outcome , Elbow Joint/surgery , Contracture/etiology , Contracture/surgery , Ossification, Heterotopic/etiology , Ossification, Heterotopic/surgery , Range of Motion, Articular
6.
J Tradit Chin Med ; 44(1): 188-196, 2024 Feb.
Article in English | MEDLINE | ID: mdl-38213254

ABSTRACT

OBJECTIVE: To evaluate the extent of vascular endothelial dysfunction and preliminary identify serum protein biomarkers associated with obese individuals at risk for cardiovascular disease (CVD). METHODS: Fifteen obese volunteers with the phlegm-dampness constitution or balanced constitution were recruited for this study respectively. The clinical baseline data was collected, and the vascular endothelial function was evaluated using the EndoPATTM. Blood samples were collected for the serum proteome analysis. The differences in the serum protein expression levels between the two groups were detected and the protein interaction network analysis, correlation analysis, receiver operating characteristic (ROC) curve analysis, and random forest model investigation were conducted. RESULTS: There were no statistical differences found in the baseline data. For vascular endothelial function, the reactive hyperemia index (RHI) of the phlegm-dampness constitution obese group was significantly lower than that of the balanced constitution obese group (1.46 ± 0.30 vs 2.82 ± 0.78, P < 0.0001), indicating vascular endothelial dysfunction. There are 66 differentially expressed serum proteins between the two groups. apolipoprotein A2 (ApoA2), angiotensin-converting enzyme 2 (ACE-2), interleukin-33 (IL-33), and forkhead box P3 (FoxP3) showed significant differences and area under curve values of their ROC curves were greater than 0.7 and correlated significantly with RHI. CONCLUSION: Vascular endothelial dysfunction was present in the phlegm-dampness constitution obese group. Thus, alterations in the expression levels of key serum proteins, including ApoA2, ACE-2, IL-33, and FoxP3 could serve as potential biomarkers in the obese population at risk of CVD.


Subject(s)
Cardiovascular Diseases , Medicine, Chinese Traditional , Humans , Proteome/genetics , Interleukin-33 , Obesity , Biomarkers , Blood Proteins , Forkhead Transcription Factors
7.
Biochem Pharmacol ; 219: 115959, 2024 01.
Article in English | MEDLINE | ID: mdl-38052270

ABSTRACT

The elaborate mechanisms of depression have always been a research hotspot in recent years, and the pace of research has never ceased. The P2X7 receptor (P2X7R) belongs to one of the adenosine triphosphates (ATP)-gated cation channels that exist widely in brain tissues and play a prominent role in the regulation of depression-related pathology. To date, the role of purinergic P2X7R in the mechanisms underlying depression is not fully understood. In this review, we conclude that the purinergic receptor P2X7 is a potential therapeutic target for depression based on research results published over the past 5 years in Google Scholar and the National Library of Medicine (PubMed). Additionally, we introduced the functional characteristics of P2X7R and confirmed that excessive activation of P2X7R led to increased release of inflammatory cytokines, which eventually contributed to depression. Furthermore, the inhibition of P2X7R produced antidepressant-like effects in animal models of depression, further proving that P2X7R signalling mediates depression-like behaviours. Finally, we summarised related studies on drugs that exert antidepressant effects by regulating the expression of P2X7R. We hope that the conclusions of this review will provide information on the role of P2X7R in the neuropathophysiology of depression and novel therapeutic targets for the treatment of depression.


Subject(s)
Depression , Receptors, Purinergic P2X7 , Animals , Depression/drug therapy , Receptors, Purinergic P2X7/metabolism , Cytokines/metabolism , Antidepressive Agents/pharmacology , Antidepressive Agents/therapeutic use , Signal Transduction , Adenosine Triphosphate/metabolism , Purinergic P2X Receptor Antagonists/pharmacology , Purinergic P2X Receptor Antagonists/therapeutic use
8.
Curr Neuropharmacol ; 22(6): 1064-1079, 2024.
Article in English | MEDLINE | ID: mdl-37032500

ABSTRACT

MicroRNA-206 (miR-206) is a microRNA that is involved in many human diseases, such as myasthenia gravis, osteoarthritis, depression, cancers, etc. Both inhibition effects and progression roles of miR-206 have been reported for the past few years. High expression of miR-206 was observed in patients with osteoarthritis, gastric cancer and epithelial ovarian cancer compared to normal people. The study also showed that miR-206 promotes cancer progression in breast cancer patients and avascular necrosis of the femoral head. Meanwhile, several studies have shown that expression levels of miR-206 were down-regulated in laryngeal carcinoma cell multiplication, as well as in hepatocellular carcinoma, non-small lung cancer and infantile hemangioma. Moreover, miR-206 was up-regulated in the mild stage of amyotrophic lateral sclerosis patients and then down-regulated in the moderate and severe stages, indicating that miR-206 has the double effects of starting and aggravating the disease. In neuropsychiatric disorders, such as depression, miR-206 also plays an important role in the progression of the disease; the level of miR-206 is most highly expressed in the brains of patients with depression. In the current review, we summarize the role of miR-206 in various diseases, and miR-206 may be developed as a new biomarker for diagnosing diseases in the near future.


Subject(s)
MicroRNAs , Neoplasms , Osteoarthritis , Animals , Humans , MicroRNAs/genetics , MicroRNAs/metabolism , Neoplasms/genetics , Biomarkers , Models, Animal , Osteoarthritis/genetics , Gene Expression Regulation, Neoplastic
9.
Journal of Clinical Hepatology ; (12): 147-150, 2024.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-1006440

ABSTRACT

Nonalcoholic fatty liver disease (NAFLD) has gradually become the main reason affecting human liver health, and many factors are involved in the development and progression of NAFLD. Mitochondria, as the “energy factory” of cells, plays an important role in maintaining normal physiological functions. Studies have shown that hepatic mitochondrial dysfunction promotes the development and progression of NAFLD. This article briefly introduces the latest research advances in the basic characteristics and physiological function of liver mitochondria and reviews new research findings in the association of mitochondrial dysfunction with obesity, simple fatty liver disease, and nonalcoholic steatohepatitis, in order to provide new ideas for the research on targeted mitochondrial therapy for NAFLD.

10.
Acta Pharmaceutica Sinica ; (12): 94-104, 2024.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-1005431

ABSTRACT

Decoction is the most commonly used dosage form in the clinical treatment of traditional Chinese medicine (TCM). During boiling, the violent movement of various active ingredients in TCM creates molecular forces such as hydrogen bonding, π-π stacking, hydrophobic interactions and electrostatic interactions, which results in the formation of self-assembled aggregates in decoction (SADs), including particles, gels, fibers, etc. It was found that SADs widely existed in decoction with biological activities superior to both effective monomers and their physical mixtures, providing a new idea to reveal the pharmacodynamic material basis of Chinese herbal medicine from the perspective of component interactions-phase structure. Recently, SADs have become a novel focus of research in TCM. This paper reviewed their relevant studies in recent years and found some issues to be concerned in the research, such as the polydispersity of decoction system, instability of active ingredient interactions during boiling, uncertainty of the aggregates self-assembly rules, and stability, purity, yield of the products. In this regard, some solutions and new ideas were presented for the integrated development and clinical application of SADs.

11.
China Pharmacy ; (12): 10-14, 2024.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-1005206

ABSTRACT

On-site supervision is a risk-based regulatory system that requires the scientific development of supervision plans for quality risks and hidden dangers in pharmaceutical enterprises, the rational allocation of supervision resources based on their risk levels, and the implementation of classified supervision measures. In this study, the quality risk monitoring business support system is set up for pharmaceutical enterprises by establishing the quality risk expert database and quality risk monitoring index system for pharmaceutical enterprises based on the difficulty analysis of on-site drug supervision. Based on this support system, the quality risk classification method, the differentiated spot check strategy and business auxiliary visualization system are established. This support system is used to learn the risk level of pharmaceutical enterprises, so as to innovate supervision methods and optimize monitoring strategies. Taking Jiangxi Province as an example, it is verified that the support system can guide the risk assessment of sample enterprises, can improve the targeting of on-site drug supervision in the process of technical review, scheme editing, on-site implementation and comprehensive evaluation, and can effectively improve the quality and efficiency of supervision.

12.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-1005104

ABSTRACT

The modernization of traditional Chinese medicine (TCM) theories is not only a prerequisite for the modernization of TCM but also a way to deal with the external environment and the difficulties of its development. The modernization of TCM is based on the premise of maintaining its own characteristics and advantages, and along with the progress of modern science and technology, the entire TCM has undergone new changes and improvements from theory to practice, and has become a scientific system with modern scientific level that adapts to the needs of the times. In the context of the unprecedented profound changes in contemporary TCM academics, this paper puts forward the definition of modernization of TCM theory and argues that the modernized theoretical system of TCM should maintain originality to build the foundation of TCM inheritance, clarify the frontier of the discipline and establish the conceptual system, form an open network to be compatible with multi-disciplinary interaction, incorporate the falsification and establish self-renewal system, creatively transform and innovatively develop, and modernize the interpretation and update the discourse system.

13.
Article in Chinese | WPRIM (Western Pacific) | ID: wpr-1012719

ABSTRACT

Alzheimer's disease (AD) is a neurodegenerative disease often characterized by cognitive impairment in clinical practice. The main pathogenesis includes β amyloid protein (Aβ) excessive deposition, neuroinflammatory response, Tau protein hyperphosphorylation, and other factors, and currently only a few chemical drugs have been approved for clinical treatment of AD. The mechanism of action is relatively single, so it is imperative to find new treatment strategies. Traditional Chinese medicine theory believes that the loss of nourishment in the brain and marrow, as well as the loss of vital energy, is the internal mechanisms underlying the occurrence and development of AD, which runs through the entire treatment process. The pathogenesis of AD is closely related to the inflammasome signaling pathway of nucleotide binding oligomerization domain-like receptor protein 3 (NLRP3). Activating the NLRP3 signaling pathway increases neuroinflammatory response, intervenes in microglial polarization, and regulates Aβ sedimentation, cellular autophagy, brain homeostasis, etc. This article takes the NLRP3 signaling pathway as the starting point to sort out and summarize the upstream and downstream targets under the AD mechanism in the past five years, as well as the research on the NLRP3 signal pathway targets with the participation of the relevant traditional Chinese medicine compounds, such as Danggui Shaoyaosan, modified Shuyu Wan, Qingxin Kaiqiao prescription, Kaixin San, Jiedu Yizhi prescription, and modified Buwang San, traditional Chinese medicine monomer extracts, such as silibinin, Lycium barbarum polysaccharides, liquiritigenin, salidroside, baicalin, cinnamaldehyde, betaine, acacetin, and Hericium erinaceus, and acupuncture and moxibustion. It also reviews the latest achievements in the prevention and treatment of AD. This study provides ideas and directions for in-depth research on the prevention and treatment of cognitive dysfunction related diseases with traditional Chinese medicine.

14.
Chinese Herbal Medicines ; (4): 121-131, 2024.
Article in English | WPRIM (Western Pacific) | ID: wpr-1010746

ABSTRACT

OBJECTIVE@#Based on metabonomics technology of high-performance liquid chromatography-mass spectrometry (HPLC-MS/MS) and hydrogen nuclear magnetic resonance spectroscopy (1H NMR), the pharmacokinetic characteristics and therapeutic mechanism of Rhei Radix et Rhizoma (RhRR, Dahuang in Chinese), Eupolyphaga Steleophaga (EuS, Tubiechong in Chinese) combined with RhRR acting on acute liver injury were explored.@*METHODS@#Models of acute liver injury were established, and the pharmacokinetic methods of five components of RhRR-EuS in rats were found by HPLC-MS/MS. The liver tissues of different groups of mice were analyzed by 1H NMR spectroscopy combined with multivariate statistical analysis to investigate the metabolomics of RhRR-EuS and RhRR.@*RESULTS@#Pharmacokinetic results showed there were different levels of bimodal phenomenon in different groups, and the absorption of free anthraquinone in RhRR increased after compatibility with EuS. In addition, the pathological state of acute liver injury in rats can selectively promote the absorption of emodin, chrysophanol, physcion and aloe emodin. Through 15 differential metabolites in the liver tissue of acute liver injury mice, it was revealed that RhRR-EuS and RhRR could protect the liver injury by regulating the metabolism of glutamine and glutamic acid, alanine, aspartic acid and glutamic acid, and phosphoinositide. However, the regulation of RhRR was weaker than that of RhRR-EuS.@*CONCLUSION@#For the first time, we studied the pharmacokinetics and metabolomics differences of RhRR-EuS and RhRR in rats and mice with acute liver injury, in order to provide theoretical reference for clinical treatment of liver disease by DHZCP.

15.
Article in English | WPRIM (Western Pacific) | ID: wpr-1009508

ABSTRACT

PURPOSE@#To identify the potential target genes of blast lung injury (BLI) for the diagnosis and treatment.@*METHODS@#This is an experimental study. The BLI models in rats and goats were established by conducting a fuel-air explosive power test in an unobstructed environment, which was subsequently validated through hematoxylin-eosin staining. Transcriptome sequencing was performed on lung tissues from both goats and rats. Differentially expressed genes were identified using the criteria of q ≤ 0.05 and |log2 fold change| ≥ 1. Following that, enrichment analyses were conducted for gene ontology and the Kyoto Encyclopedia of Genes and Genomes pathways. The potential target genes were further confirmed through quantitative real-time polymerase chain reaction and enzyme linked immunosorbent assay.@*RESULTS@#Observations through microscopy unveiled the presence of reddish edema fluid, erythrocytes, and instances of focal or patchy bleeding within the alveolar cavity. Transcriptome sequencing analysis identified a total of 83 differentially expressed genes in both rats and goats. Notably, 49 genes exhibited a consistent expression pattern, with 38 genes displaying up-regulation and 11 genes demonstrating down-regulation. Enrichment analysis highlighted the potential involvement of the interleukin-17 signaling pathway and vascular smooth muscle contraction pathway in the underlying mechanism of BLI. Furthermore, the experimental findings in both goats and rats demonstrated a strong association between BLI and several key genes, including anterior gradient 2, ankyrin repeat domain 65, bactericidal/permeability-increasing fold containing family A member 1, bactericidal/permeability-increasing fold containing family B member 1, and keratin 4, which exhibited up-regulation.@*CONCLUSIONS@#Anterior gradient 2, ankyrin repeat domain 65, bactericidal/permeability-increasing fold containing family A member 1, bactericidal/permeability-increasing fold containing family B member 1, and keratin 4 hold potential as target genes for the prognosis, diagnosis, and treatment of BLI.


Subject(s)
Rats , Animals , Lung Injury/genetics , Goats/genetics , Keratin-4 , Gene Expression Profiling , Gene Expression
16.
FASEB J ; 38(1): e23397, 2024 01.
Article in English | MEDLINE | ID: mdl-38149908

ABSTRACT

Toxoplasma gondii relies heavily on the de novo pyrimidine biosynthesis pathway for fueling the high uridine-5'-monophosphate (UMP) demand during parasite growth. The third step of de novo pyrimidine biosynthesis is catalyzed by dihydroorotase (DHO), a metalloenzyme that catalyzes the reversible condensation of carbamoyl aspartate to dihydroorotate. Here, functional analyses of TgDHO reveal that tachyzoites lacking DHO are impaired in overall growth due to decreased levels of UMP, and the noticeably growth restriction could be partially rescued after supplementation with uracil or high concentrations of L-dihydroorotate in vitro. When pyrimidine salvage pathway is disrupted, both DHOH35A and DHOD284E mutant strains proliferated much slower than DHO-expressing parasites, suggesting an essential role of both TgDHO His35 and Asp284 residues in parasite growth. Additionally, DHO deletion causes the limitation of bradyzoite growth under the condition of uracil supplementation or uracil deprivation. During the infection in mice, the DHO-deficient parasites are avirulent, despite the generation of smaller tissue cysts. The results reveal that TgDHO contributes to parasite growth both in vitro and in vivo. The significantly differences between TgDHO and mammalian DHO reflect that DHO can be exploited to produce specific inhibitors targeting apicomplexan parasites. Moreover, potential DHO inhibitors exert beneficial effects on enzymatic activity of TgDHO and T. gondii growth in vitro. In conclusion, these data highlight the important role of TgDHO in parasite growth and reveal that it is a promising anti-parasitic target for future control of toxoplasmosis.


Subject(s)
Parasites , Toxoplasma , Animals , Mice , Dihydroorotase , Pyrimidines/pharmacology , Uracil , Uridine Monophosphate , Mammals
17.
Cells ; 12(14)2023 07 15.
Article in English | MEDLINE | ID: mdl-37508526

ABSTRACT

cGAS-STING signaling is a major pathway in inducing type Ⅰ IFN, which plays a crucial role in the defense against T. gondii infection. In contrast, T. gondii develops multiple strategies to counteract the host defense, causing serious diseases in a wide range of hosts. Here, we demonstrate that T. gondii rhoptry protein 16 (ROP16) dampens type I interferon signaling via the inhibition of the cGAS (cyclic GMP-AMP synthase) pathway through the polyubiquitination of STING. Mechanistically, ROP16 interacts with STING through the SignalP domain and inhibits the K63-linked ubiquitination of STING in an NLS (nuclear localization signal)-domain-dependent manner. Consequently, knocking out the ROP16 in PRU tachyzoites promotes the STING-mediated production of type I IFNs and limits the replication of T. gondii. Together, these findings describe a distinct pathway where T. gondii exploits the ubiquitination of STING to evade host anti-parasite immunity, revealing new insights into the interaction between the host and parasites.


Subject(s)
Interferon Type I , Toxoplasma , Membrane Proteins/metabolism , Immunity, Innate , Nucleotidyltransferases/metabolism , Ubiquitination , Interferon Type I/metabolism
18.
Phytomedicine ; 118: 154938, 2023 Sep.
Article in English | MEDLINE | ID: mdl-37406390

ABSTRACT

BACKGROUND: Ginseng is well-known as one of the most valuable and commonly used Chinese medicines not only in ancient China but also worldwide including East, Russia, Southeast Asia, North America and some Western European countries. Ginsenosides, as one of the main high active components of Ginseng, have various pharmacological activities, such as anti-inflammatory, antianaphylaxis, anti-depression, and anticancer activities. Ginsenoside Rh2 (Rh2), one of the major bioactive ginsenosides in Panax ginseng, also exhibits versatile pharmacological activities, such as increasing non-specific resistance and specific immune response, improving cardiac function and fibrosis, anti-inflammatory effects and antitumor effects, which may serve as an excellent medicinal potential. PURPOSE: As one of hundreds of ginsenosides being identified from ginseng, Rh2 exerts a markedly pharmacological effect on various diseases without severe toxicity, it has attracted many researchers 'attention. Although Rh2 plays important roles in some animal models and cell lines to simulate human diseases, its underlying molecular mechanisms have yet to be determined. During the past ten years, nearly 450 studies on Rh2 in the treatment of complex disease have been reported, however, up to now, no comprehensive reviews about the roles of Rh2 in animal models and cellular lines of human nonmalignant and malignant diseases have been conducted. METHOD: We searched articles on ginsenoside-related diseases from December 2010 to February 2023 in peer-reviewed and nonclinical databases, which include Web of Science, Scopus, PubMed, China national knowledge internet and Medline, and using the following keywords: Ginsenoside Rh2, Human diseases, Cancer, Mechanisms, Chinese herbal medicine, Natural products and Signaling pathway. RESULTS: Therefore, in this review, we make a comprehensive summary on the roles of Rh2 and support the potential mechanisms of Rh2 according to the disease classification, including nonmalignant disease such as ulcerative colitis, neuropathic pain, Asthma, myocardial injury, depression and malignant disease such as breast cancer, colorectal cancer, hepatocellular carcinoma and gastric cancer. Finally, the combination therapy of Rh2 and other medications in human diseases are summarized, apart from that, there are other problems such as the bioavailability of oral administration Rh2 to be overcome in following research. CONCLUSION: These findings provide strong evidence that Ginsenoside Rh2 plays important roles in the treatment of nonmalignant and malignant diseases.


Subject(s)
Carcinoma, Hepatocellular , Ginsenosides , Liver Neoplasms , Panax , Animals , Humans , Ginsenosides/pharmacology , Ginsenosides/therapeutic use , Carcinoma, Hepatocellular/drug therapy , Liver Neoplasms/drug therapy , China
19.
Metabolites ; 13(4)2023 Mar 27.
Article in English | MEDLINE | ID: mdl-37110135

ABSTRACT

Due to the limited effectiveness of existing drugs for the treatment of toxoplasmosis, there is a dire need for the discovery of new therapeutic options. Artemether is an important drug for malaria and several studies have indicated that it also exhibits anti-T. gondii activity. However, its specific effect and mechanisms are still not clear. To elucidate its specific role and potential mechanism, we first evaluated its cytotoxicity and anti-Toxoplasma effect on human foreskin fibroblast cells, and then analyzed its inhibitory activity during T. gondii invasion and intracellular proliferation. Finally, we examined its effect on mitochondrial membrane potential and reactive oxygen species (ROS) in T. gondii. The CC50 value of artemether was found to be 866.4 µM, and IC50 was 9.035 µM. It exhibited anti-T. gondii activity and inhibited the growth of T. gondii in a dose-dependent manner. We also found that the inhibition occurred primarily in intracellular proliferation, achieved by reducing the mitochondrial membrane integrity of T. gondii and stimulating ROS production. These findings suggest that the mechanism of artemether against T. gondii is related to a change in the mitochondrial membrane and the increase in ROS production, which may provide a theoretical basis for optimizing artemether derivatives and further improving their anti-Toxoplasma efficacy.

20.
Int Immunopharmacol ; 118: 110050, 2023 May.
Article in English | MEDLINE | ID: mdl-37003187

ABSTRACT

We access the safety and efficacy of methylprednisolone combined with dupilumab in treating the bullous pemphigoid. 27 patients were enrolled, of which 9 received dupilumab in addition to methylprednisolone (dupilumab group, D group), while the other 18 patients were administered methylprednisolone alone (traditional group, T group). The median time to stop the formation of the new blister was 5.5 days (3.5-11.75 days) and 10 days (9-15 days) in the D group and the T group, respectively (p = 0.032). Additionally, the median time of complete healing reached was 21 days (16.25-31 days) and 29 days (25-50 days) in the D group and the T group, separately (p = 0.042). The median amount of cumulative methylprednisolone at the time of disease control was 240 mg (140-580 mg) and 460 mg (400-840 mg) in the D group and the T group, respectively (p = 0.031). The total amount of the methylprednisolone used at the time of complete healing reached was 792 mg (597-1,488.5 mg) in the D group while that was 1,370 mg (1,000-2,570 mg) in the T group (p = 0.028). No adverse event associated with dupilumab was recorded. Methylprednisolone in combination with dupilumab appeared superior to methylprednisolone alone in control of disease progression and the methylprednisolone-sparing effect.


Subject(s)
Methylprednisolone , Pemphigoid, Bullous , Humans , Methylprednisolone/adverse effects , Pemphigoid, Bullous/drug therapy , Pemphigoid, Bullous/chemically induced , Drug Therapy, Combination , Antibodies, Monoclonal, Humanized/therapeutic use
SELECTION OF CITATIONS
SEARCH DETAIL
...