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1.
Technol Health Care ; 32(S1): 207-216, 2024.
Article in English | MEDLINE | ID: mdl-38759050

ABSTRACT

BACKGROUND: Computer-aided tongue and face diagnosis technology can make Traditional Chinese Medicine (TCM) more standardized, objective and quantified. However, many tongue images collected by the instrument may not meet the standard in clinical applications, which affects the subsequent quantitative analysis. The common tongue diagnosis instrument cannot determine whether the patient has fully extended the tongue or collected the face. OBJECTIVE: This paper proposes an image quality control algorithm based on deep learning to verify the eligibility of TCM tongue diagnosis images. METHODS: We firstly gathered enough images and categorized them into five states. Secondly, we preprocessed the training images. Thirdly, we built a ResNet34 model and trained it by the transfer learning method. Finally, we input the test images into the trained model and automatically filter out unqualified images and point out the reasons. RESULTS: Experimental results show that the model's quality control accuracy rate of the test dataset is as high as 97.06%. Our methods have the strong discriminative power of the learned representation. Compared with previous studies, it can guarantee subsequent tongue image processing. CONCLUSIONS: Our methods can guarantee the subsequent quantitative analysis of tongue shape, tongue state, tongue spirit, and facial complexion.


Subject(s)
Deep Learning , Medicine, Chinese Traditional , Quality Control , Tongue , Humans , Medicine, Chinese Traditional/standards , Medicine, Chinese Traditional/methods , Tongue/diagnostic imaging , Image Processing, Computer-Assisted/methods , Algorithms
2.
Microorganisms ; 12(5)2024 May 07.
Article in English | MEDLINE | ID: mdl-38792773

ABSTRACT

Plant growth-promoting rhizobacterial strain FP607T was isolated from the rhizosphere of beets in Wuhan, China. Strain FP607T exhibited significant antagonism toward several phytopathogenic bacteria, indicating that FP607T may produce antimicrobial metabolites and has a stronger biocontrol efficacy against plant pathogens. Growth-promoting tests showed that FP607T produced indole-3-acetic acid (IAA), NH3, and ferritin. The genome sequence of strain FP607T was 6,590,972 bp long with 59.0% G + C content. The optimum temperature range was 25-30 °C, and the optimum pH was 7. The cells of strain FP607T were Gram-negative, short, and rod-shaped, with polar flagella. The colonies on the King's B (KB) agar plates were light yellow, smooth, and circular, with regular edges. A phylogenetic analysis of the 16S rRNA sequence and a multilocus sequence analysis (MLSA) showed that strain FP607T was most closely related to the type of strain Pseudomonas farris SWRI79T. Based on a polyphasic taxonomic approach, strain FP607T was identified as a novel species within the genus Pseudomonas, for which the name Pseudomonas wuhanensis sp. nov. was proposed. The type of strain used was FP607T (JCM 35688, CGMCC 27743, and ACCC 62446).

3.
Int J Mol Sci ; 25(5)2024 Mar 02.
Article in English | MEDLINE | ID: mdl-38474180

ABSTRACT

Alcohol use disorders (AUDs) frequently co-occur with negative mood disorders, such as anxiety and depression, exacerbating relapse through dopaminergic dysfunction. Stress-related neuropeptides play a crucial role in AUD pathophysiology by modulating dopamine (DA) function. The rostromedial tegmental nucleus (RMTg), which inhibits midbrain dopamine neurons and signals aversion, has been shown to increase ethanol consumption and negative emotional states during abstinence. Despite some stress-related neuropeptides acting through the RMTg to affect addiction behaviors, their specific roles in alcohol-induced contexts remain underexplored. This study utilized an intermittent voluntary drinking model in mice to induce negative effect behavior 24 h into ethanol (EtOH) abstinence (post-EtOH). It examined changes in pro-stress (Pnoc, Oxt, Npy) and anti-stress (Crf, Pomc, Avp, Orx, Pdyn) neuropeptide-coding genes and analyzed their correlations with aversive behaviors. We observed that adult male C57BL/6J mice displayed evident anxiety, anhedonia, and depression-like symptoms at 24 h post-EtOH. The laser-capture microdissection technique, coupled with or without retrograde tracing, was used to harvest total ventral tegmental area (VTA)-projecting neurons or the intact RMTg area. The findings revealed that post-EtOH consistently reduced Pnoc and Orx levels while elevating Crf levels in these neuronal populations. Notably, RMTg Pnoc and Npy levels counteracted ethanol consumption and depression severity, while Crf levels were indicative of the mice's anxiety levels. Together, these results underscore the potential role of stress-related neuropeptides in the RMTg in regulating the negative emotions related to AUDs, offering novel insights for future research.


Subject(s)
Alcoholism , Substance Withdrawal Syndrome , Mice , Male , Animals , Mice, Inbred C57BL , Ventral Tegmental Area , Ethanol/pharmacology , Dopaminergic Neurons/physiology
4.
Sci Total Environ ; 921: 171170, 2024 Apr 15.
Article in English | MEDLINE | ID: mdl-38402979

ABSTRACT

Concurrent changing precipitation regimes and atmospheric nitrogen (N) deposition can have profound influences on soil carbon (C) cycling. However, how N enrichment regulates the responses of soil C fluxes to increasing variability of precipitation remains elusive. As part of a field precipitation gradient experiment with nine levels of precipitation amounts (-60 %, -45 %, -30 %, -15 %, ambient precipitation, +15 %, +30 %, +45 %, and +60 %) and two levels of N addition (0 and 10 g N m-2 yr-1) in a semi-arid temperate steppe on the Mongolian Plateau, this work was conducted to investigate the responses of soil respiration to decreased and increased precipitation (DP and IP), N addition, and their possible interactions. Averaged over the three years from 2019 to 2021, DP suppressed soil respiration by 16.1 %, whereas IP stimulated it by 27.4 %. Nitrogen addition decreased soil respiration by 7.1 % primarily via reducing microbial biomass C. Soil respiration showed symmetric responses to DP and IP within all the four precipitation variabilities (i.e., 15 %, 30 %, 45 %, and 60 %) under ambient N. Nevertheless, N addition did not alter the symmetric responses of soil respiration to changing precipitation due to the comparable sensitivities of microbial biomass and root growth to DP and IP under the N addition treatment. These findings indicate that intensified precipitation variability does not change but N addition could alleviate soil C releases. The unchanged symmetric responses of soil respiration to precipitation variability under N addition imply that N deposition may not change the response pattern of soil C releases to predicted increases in precipitation variability in grasslands, facilitating the robust projections of ecosystem C cycling under future global change scenarios.


Subject(s)
Ecosystem , Grassland , Nitrogen/analysis , Soil , Soil Microbiology , Carbon
5.
Neuropsychopharmacology ; 48(11): 1567-1578, 2023 10.
Article in English | MEDLINE | ID: mdl-37059867

ABSTRACT

The role of lysophosphatidic acid (LPA) signaling in psychiatric disorders and drug abuse is significant. LPA receptors are widely expressed in the central nervous system, including the lateral habenula (LHb). Recent studies suggest that LHb is involved in a negative emotional state during alcohol withdrawal, which can lead to relapse. The current study examines the role of LHb LPA signaling in the negative affective state associated with alcohol withdrawal. Adult male Long-Evans rats were trained to consume either alcohol or water for eight weeks. At 48 h of withdrawal, alcohol-drinking rats showed anxiety- and depression-like symptoms, along with a significant increase in LPA signaling and related neuronal activation molecules, including autotaxin (ATX, Enpp2), LPA receptor 1/3 (LPA1/3), ßCaMKII, and c-Fos. However, there was a decrease in lipid phosphate phosphatase-related protein type 4 (LPPR4) in the LHb. Intra-LHb infusion of the LPA1/3 receptor antagonist ki-16425 or PKC-γ inhibitor Go-6983 reduced the abnormal behaviors and elevated relapse-like ethanol drinking. It also normalized high LPA1/3 receptors and enhanced AMPA GluA1 phosphorylation in Ser831 and GluA1/GluA2 ratio. Conversely, selective activation of LPA1/3 receptors by intra-LHb infusion of 18:1 LPA induced negative affective states and upregulated ßCaMKII-AMPA receptor phosphorylation in Naive rats, which were reversed by pretreatment with intra-LHb Go-6983. Our findings suggest that disturbances in LPA signaling contribute to adverse affective disorders during alcohol withdrawal, likely through PKC-γ/ßCaMKII-linked glutamate signaling. Targeting LPA may therefore be beneficial for individuals suffering from alcohol use disorders.


Subject(s)
Alcoholism , Habenula , Substance Withdrawal Syndrome , Humans , Rats , Male , Animals , Alcoholism/metabolism , Substance Withdrawal Syndrome/metabolism , Receptors, Lysophosphatidic Acid/metabolism , Habenula/metabolism , Rats, Long-Evans
6.
Int J Neurosci ; 133(12): 1411-1423, 2023 Dec.
Article in English | MEDLINE | ID: mdl-35633062

ABSTRACT

Backgroud: Hydroxysafflor yellow A (HSYA) has a certain improvement effect on Alzheimer's disease (AD) rats, but its specific mechanism is still unclear. The purpose of this study was to observe the regulatory effect of HSYA on learning and memory ability of AD rats induced by Aß1-42.Materials and methods: Morris water maze test was used to evaluate the effect of HSYA on the learning and memory ability of AD model rats. To explore the effective targets and potential molecular mechanisms of HSYA in AD treatment based on quantitative proteomics.Results: Through the Morris water maze experiment, we found that after HSYA treatment, the learning ability of rats in the model group has been significantly improved. Quantitative proteomics results showed that among the 11 common differential proteins between the "model/sham operation" comparison group and the "HSYA treatment/model" comparison group, the cholesterol synthesis rate-limiting enzyme mevalonate decarboxylase (Mvd) Western Blot results are consistent with the results of quantitative proteomics analysis. We found that HSYA can inhibit the expression of BACE protein in hippocampus of AD rats and decrease the level of Aß1-42. Besides, HSYA could also reduce cholesterol levels in serum and hippocampus.Conclusion: In summary, HSYA can effectively improve learning and memory disorders in AD rats, and exert neuroprotective effects by effectively controlling serum and brain cholesterol to down-regulate the expression of BACE and thus reduce the content of Aß1-42.


Subject(s)
Alzheimer Disease , Rats , Animals , Alzheimer Disease/drug therapy , Proteomics , Maze Learning , Brain
7.
Neuropsychopharmacology ; 48(6): 908-919, 2023 05.
Article in English | MEDLINE | ID: mdl-36329156

ABSTRACT

Recent studies indicate that stimulation of the rostromedial tegmental nucleus (RMTg) can drive a negative affective state and that nociceptin/orphanin FQ (N/OFQ) may play a role in affective disorders and drug addiction. The N/OFQ precursor prepronociceptin encoding genes Pnoc are situated in RMTg neurons. To determine whether N/OFQ signaling contributes to the changes in both behavior phenotypes and RMTg activity of alcohol withdrawn (Post-EtOH) rats, we trained adult male Long-Evans rats, randomly assigned into the ethanol and Naïve groups to consume either 20% ethanol or water-only under an intermittent-access procedure. Using the fluorescence in situ hybridization technique combined with retrograde tracing, we show that the ventral tegmental area projecting RMTg neurons express Pnoc and nociceptin opioid peptide (NOP) receptors encoding gene Oprl1. Also, using the laser capture microdissection technique combined with RT-qPCR, we detected a substantial decrease in Pnoc but an increase in Oprl1 mRNA levels in the RMTg of Post-EtOH rats. Moreover, RMTg cFos expression is increased in Post-EtOH rats, which display anxiety- and depression-like behaviors. Intra-RMTg infusion of the endogenous NOP agonist nociceptin attenuates the aversive behaviors in Post-EtOH rats without causing any notable change in Naïve rats. Conversely, intra-RMTg infusion of the NOP selective antagonist [Nphe1]nociceptin(1-13)NH2 elicits anxiety- and depression-like behaviors in Naïve but not Post-EtOH rats. Furthermore, intra-RMTg infusion of nociceptin significantly reduces alcohol consumption. Thus, our results show that the deficiency of RMTg NOP signaling during alcohol withdrawal mediates anxiety- and depression-like behaviors. The intervention of NOP may help those individuals suffering from alcohol use disorders.


Subject(s)
Alcoholism , Substance Withdrawal Syndrome , Rats , Male , Animals , Receptors, Opioid/metabolism , Depression , In Situ Hybridization, Fluorescence , Rats, Long-Evans , Opioid Peptides/metabolism , Anxiety/metabolism , Ethanol , Nociceptin Receptor , Nociceptin
8.
Front Cell Neurosci ; 16: 774297, 2022.
Article in English | MEDLINE | ID: mdl-35431808

ABSTRACT

Ferroptosis, an iron-dependent form of non-apoptotic cell death, plays important roles in cerebral ischemia. Previously we have found that L-F001, a novel fasudil-lipoic acid dimer with good pharmacokinetic characters has good neuroprotection against toxin-induced cell death in vitro and in vivo. Here, we investigated the protective effects of L-F001 against a Glutathione peroxidase 4 (GPX4) inhibitor Ras-selective lethality 3 (RSL3) -induced ferroptosis in HT22 cells. We performed MTT, Transmission Electron Microscope (TEM), Western blot, and immunofluorescence analyses to determine the protective effects of L-F001 treatment. RSL3 treatment significantly reduced HT22 cell viability and L-F001 significantly protected RSL3-induced cell death in a concentration-dependent manner and significantly attenuated Mitochondrial shrinkage observed by TEM. Meanwhile, L-F001 significantly decreased RSL3-induced ROS and lipid peroxidation levels in HT22 cells. Moreover L-F001could restore GPX4 and glutamate-cysteine ligase modifier subunit (GCLM) levels, and significantly deceased Cyclooxygenase (COX-2) levels to rescue the lipid peroxidation imbalance. In addition, FerroOrange fluorescent probe and Western blot analysis revealed that L-F001 treatment decreased the total number of intracellular Fe2+ and restore Ferritin heavy chain 1 (FTH1) level in RSL3-induced HT22 cells. Finally, L-F001 could reduce RSL3-induced c-Jun N-terminal kinase (JNK) activation, which might be a potential drug target for LF-001. Considering that L-F001 has a good anti-ferroptosis effect, our results showed that L-F001 might be a multi-target agent for the therapy of ferroptosis-related diseases, such as cerebral ischemia.

9.
Chin Neurosurg J ; 8(1): 8, 2022 Apr 01.
Article in English | MEDLINE | ID: mdl-35361274

ABSTRACT

BACKGROUND: Traumatic brain injury, one of the leading causes of death in adults under 40 years of age in the world, is frequently caused by mechanical shock, resulting in diffuse neuronal damage and long-term cognitive dysfunction. Many existing TBI animal models revival with expensive equipment or special room are needed or the processes of operations are complex and not easy to be widely used. Therefore, a simpler TBI model needs to be designed. METHODS: Our TBI model is an innovation of the modeling method through air guns shutting rubber bullets. A core facet is the application of our designed rubber bullet impact device. It could focus the hitting power to the fixed site of the brain, thus triggering a mild closed head injury. Moreover, the degree of damage can be adjusted by the times of shots. RESULTS: Our model induced blood-brain barrier leakage and diffused neuronal damage. Besides, it led to an increased level of Tau phosphorylation and resulted in cognitive dysfunction within several weeks post-injury. CONCLUSION: Our TBI model is not only simple and time-saving but also can simulate mild brain injuries in clinical. It is suitable for exploring pathobiological mechanisms as well as a screening of potential therapies for TBI.

10.
BMC Anesthesiol ; 22(1): 78, 2022 03 24.
Article in English | MEDLINE | ID: mdl-35331152

ABSTRACT

OBJECTIVE: To observe whether ultrasound-guided stellate ganglion block (SGB) can effectively relieve migraine pain and improve the quality of migraine patients' life. METHODS: 81 patients with migraines were enrolled in this study. The patients received SGB with 6 ml of 0.15% ropivacaine once every week for four times. Migraine was assessed with the Migraine Disability Assessment Scale (MIDAS) at baseline and three-months follow-up (Tm). The numerical rating scale (NRS) score at baseline, one day after treatment (Td) and Tm, the frequency of analgesic use in 3 months and the side effects were also recorded at the same time. RESULTS: The NRS score of migraine subjects decreased significantly from 7.0 (2.0) to 3.0 (1.0) at Td and 2.0 (2.0) at Tm (vs baseline, P < 0.01). The MIDAS total scores were 14.0 (10.5) at baseline and 7.0 (4.5) at Tm (P < 0.001). During the three months, the frequency of analgesic consumption was decreased from 6.2 ± 2.8 to 1.9 ± 1.8. There were no serious side effects. CONCLUSIONS: This study confirmed that ultrasound-guided SGB is an effective method to treat migraines. This technique can reduce pain and disability and then improve the quality of life of patients with migraines.


Subject(s)
Autonomic Nerve Block , Migraine Disorders , Autonomic Nerve Block/methods , Humans , Migraine Disorders/drug therapy , Quality of Life , Stellate Ganglion/diagnostic imaging , Ultrasonography, Interventional
11.
Pharmacol Res ; 175: 106003, 2022 01.
Article in English | MEDLINE | ID: mdl-34838693

ABSTRACT

Alzheimer's disease (AD) is a common neurodegenerative disease that mainly affects elderly people. However, the translational research of AD is frustrating, suggesting that the development of new AD animal models is crucial. By gavage administration of acrolein, we constructed a simple sporadic AD animal model which showed classic pathologies of AD in 1 month. The AD-like phenotypes and pathological changes were as followed. 1) olfactory dysfunctions, cognitive impairments and psychological symptoms in C57BL/6 mice; 2) increased levels of Aß1-42 and Tau phosphorylation (S396/T231) in cortex and hippocampus; 3) astrocytes and microglia proliferation; 4) reduced levels of postsynaptic density 95(PSD95) and Synapsin1, as well as the density of dendritic spines in the CA1 and DG neurons of the hippocampus; 5) high-frequency stimulation failed to induce the long-term potentiation (LTP) in the hippocampus after exposure to acrolein for 4 weeks; 6) decreased blood oxygen level-dependent (BOLD) signal in the olfactory bulb and induced high T2 signals in the hippocampus, which matched to the clinical observation in the brain of AD patients, and 7) activated RhoA/ROCK2/ p-cofilin-associated pathway in hippocampus of acrolein-treated mice, which may be the causes of synaptic damage and neuroinflammation in acrolein mice model. Taken together, the acrolein-induced sporadic AD mouse model closely reflects the pathological features of AD, which will be useful for the research on the mechanism of AD onset and the development of anti-AD drugs.


Subject(s)
Acrolein/metabolism , Alzheimer Disease/metabolism , Disease Models, Animal , Actin Depolymerizing Factors/metabolism , Alzheimer Disease/physiopathology , Amyloid beta-Peptides/metabolism , Animals , Cells, Cultured , Cerebral Cortex/metabolism , Hippocampus/metabolism , Hippocampus/physiology , Male , Mice, Inbred C57BL , Neurons/metabolism , Olfactory Bulb/physiology , Peptide Fragments/metabolism , Phosphorylation , Rats, Sprague-Dawley , Synapsins/metabolism , rho-Associated Kinases/metabolism , rhoA GTP-Binding Protein/metabolism , tau Proteins/metabolism
12.
Brain Res Bull ; 174: 250-259, 2021 09.
Article in English | MEDLINE | ID: mdl-34171402

ABSTRACT

Ferroptosis, a new type of programmed cell death discovered in recent years, plays an important role in many neurodegenerative diseases. N2L is a novel lipoic acid-niacin dimer regulating lipid metabolism with multifunction, including antioxidant effect. It also exerts neuroprotective effects against glutamate- or ß-amyloid (Aß) -induced cell death. Because reactive oxygen species (ROS) play an essential role in ferroptosis, we hypothesize that N2L might protect cells from ferroptosis. Here, we investigated the protective effect of N2L and the underlying mechanism(s) under RAS-selective lethality 3 (RSL3) treatment in HT22 cells. RSL3 decreased the cell viability and induced excessive accumulation of ROS in HT22 cells. N2L pretreatment effectively protected HT22 cells against lipid peroxidation. What's more, N2L recovered glutathione peroxidase 4 (GPX4) expression and blocked the increase of Cyclooxygenase-2 (cox-2) and acyl-CoA synthetase long-chain family member 4 (ACSL4) protein expressions. Moreover, N2L also significantly prevented Ferritin Heavy Chain 1 (FTH1) from downregulation and maintained iron homeostasis. Finally, N2L pretreatment could decrease c-Jun N-terminal kinase (JNK) / extracellular regulated protein kinases (ERK) activation induced by RSL3. Taken together, our results showed that N2L could protect HT22 cells from RSL3-induced ferroptosis through decreasing lipid peroxidation and JNK/ERK activation. And N2L could be a ferroptosis inhibitor for the therapy of ferroptosis-related diseases, such as Alzheimer's disease.


Subject(s)
Antioxidants/pharmacology , Ferroptosis/drug effects , Hypolipidemic Agents/pharmacology , Lipid Peroxidation/drug effects , Neuroprotective Agents/pharmacology , Niacin/pharmacology , Thioctic Acid/pharmacology , Animals , Cell Line , Iron/metabolism , MAP Kinase Signaling System/drug effects , Mice , Reactive Oxygen Species/metabolism
13.
Metab Brain Dis ; 36(4): 557-569, 2021 04.
Article in English | MEDLINE | ID: mdl-33550459

ABSTRACT

Alzheimer's disease (AD) is an aggressive neurodegenerative disease associated with cognitive decline, memory, language, and visual-spatial coordination disorders that eventually lead to complete loss of basic function. Hypercholesterolemia plays an important role in the pathogenesis of AD and its related diseases. Safflower yellow (SY) is a natural chalcone compound isolated from safflower, which has the effect of antioxidation and weight loss. Previous studies have shown that SY has a significant improvement in learning and memory in various AD model animals. In the early stage of proteomic technology, we found that the cholesterol synthesis rate-limiting enzyme Mevalonate decarboxylase (MVD) was abnormally high in dementia rats, and the expression level of MVD decreased after SY treatment. We speculated that SY may improve the learning and memory ability of AD mice by affecting cholesterol metabolism. The purpose of this study was to evaluate the effect of SY on regulating cholesterol metabolism and improving dementia. The area of amyloid-ß (Aß) plaque in the brain of APP/PS1 mice and various blood biochemical and molecular biological indexes was detected. Through behavioral experiments, we found that APP/ PS1 mice had significant learning and memory impairment compared with wild type mice(P < 0.01). SY (30 mg/kg) treatment for 1 month can significantly improve the learning and memory ability of APP/PS1 mice (P < 0.01). Our results showed that SY decreased serum Total cholesterol (TC) and Triglyceride (TG) and increased the level of High-density lipoprotein (HDL). HE staining obscured that SY affect the changes of liver tissue in APP/PS1 mice (P < 0.05 and P < 0.01). We found that SY reduced the expression of MVD and Apolipoprotein E (APOE4) in the cortex (P < 0.05 and P < 0.01). In summary, SY can effectively control cholesterol in serum and brain and change the degeneration of liver tissue. SY improves Alzheimer's disease by lowering serum, cortex and cortical cholesterol.


Subject(s)
Alzheimer Disease/metabolism , Amyloid beta-Protein Precursor , Brain/metabolism , Chalcone/analogs & derivatives , Cholesterol/metabolism , Presenilin-1 , Alzheimer Disease/drug therapy , Alzheimer Disease/genetics , Amyloid beta-Protein Precursor/genetics , Animals , Anticholesteremic Agents/pharmacology , Anticholesteremic Agents/therapeutic use , Avoidance Learning/drug effects , Avoidance Learning/physiology , Brain/drug effects , Chalcone/pharmacology , Chalcone/therapeutic use , Cholesterol/blood , Female , Male , Maze Learning/drug effects , Maze Learning/physiology , Mice , Mice, Transgenic , Presenilin-1/genetics
14.
Sensors (Basel) ; 21(2)2021 Jan 12.
Article in English | MEDLINE | ID: mdl-33445550

ABSTRACT

Descriptors play an important role in point cloud registration. The current state-of-the-art resorts to the high regression capability of deep learning. However, recent deep learning-based descriptors require different levels of annotation and selection of patches, which make the model hard to migrate to new scenarios. In this work, we learn local registration descriptors for point clouds in a self-supervised manner. In each iteration of the training, the input of the network is merely one unlabeled point cloud. Thus, the whole training requires no manual annotation and manual selection of patches. In addition, we propose to involve keypoint sampling into the pipeline, which further improves the performance of our model. Our experiments demonstrate the capability of our self-supervised local descriptor to achieve even better performance than the supervised model, while being easier to train and requiring no data labeling.

15.
Neurochem Res ; 45(8): 1870-1887, 2020 Aug.
Article in English | MEDLINE | ID: mdl-32410043

ABSTRACT

Safflower yellow (SY) is the main effective component of Carthamus tinctorius L., and Hydroxysafflor yellow A (HSYA) is the single active component with the highest content in SY. SY and HSYA have been shown to have neuroprotective effects in several AD models. In this study, we aimed to clarify whether the effects of SY and HSYA on the learning and memory abilities of Aß1-42-induced AD model rats are related to the enhancement of synaptic structural plasticity in brain tissues and the amelioration of disorder of glutamate circulation. We used rats injected with Aß1-42 into the bilateral hippocampus as a model of AD. After treatment with SY and HSYA, the learning and memory abilities of the Aß1-42-induced AD model rats were enhanced, Aß deposition in the AD model rats was decreased, structural damage to dendritic spines and the loss of synaptic-associated proteins were alleviated, and the disorder of glutamate circulation was ameliorated. The results indicated that SY and HSYA improve synaptic structural plasticity by ameliorating the disorder of glutamate circulation in Aß1-42-induced AD model rats.


Subject(s)
Alzheimer Disease/drug therapy , Chalcone/analogs & derivatives , Glutamic Acid/metabolism , Neuronal Plasticity/drug effects , Neuroprotective Agents/therapeutic use , Nootropic Agents/therapeutic use , Alzheimer Disease/chemically induced , Amyloid beta-Peptides , Animals , Cerebral Cortex/drug effects , Cerebral Cortex/metabolism , Cerebral Cortex/pathology , Chalcone/therapeutic use , Dendritic Spines/drug effects , Female , Hippocampus/drug effects , Hippocampus/metabolism , Hippocampus/pathology , Learning/drug effects , Male , Memory/drug effects , Peptide Fragments , Quinones/therapeutic use , Rats, Sprague-Dawley , Synapses/drug effects
16.
Neuromolecular Med ; 22(3): 341-358, 2020 09.
Article in English | MEDLINE | ID: mdl-32048142

ABSTRACT

Alzheimer's disease (AD) is a common neurodegenerative disease that is always accompanied by synaptic loss in the brain. Safflower yellow (SY) is the extract of safflower, a traditional Chinese medicine, which has shown neuroprotective effects in recent studies. However, the mechanism of SY in protecting synapses remains unclear. In this study, we are going to study the mechanism of how SY treats AD in terms of synaptic plasticity. We found, via behavioral experiments, that SY treatment could improve the abilities of learning and memory in APP/PS1 mice. In addition, using Golgi staining and HE staining, we found that SY treatment could reduce the loss of dendritic spines in the pathological condition and could maintain the normal physiological state of the cells in cortex and in hippocampus. In addition, the results of immunofluorescence staining and western blotting showed that SY treatment could significantly increase the expression of synapse-related proteins. Moreover, after being treated with SY, the expression of iNOS (marker of M1 microglia) declined remarkably, and the level of Arginase-1 (marker of M2 microglia) increased significantly. Finally, we found BDNF/TrkB/ERK signaling cascade was activated. These results indicate that SY enhances synaptic plasticity in APP/PS1 mice by regulating microglia activation phenotypes and BDNF/TrkB/ERK signaling pathway.


Subject(s)
Alzheimer Disease/drug therapy , Brain-Derived Neurotrophic Factor/physiology , Chalcone/analogs & derivatives , Drugs, Chinese Herbal/therapeutic use , MAP Kinase Signaling System/drug effects , Membrane Glycoproteins/physiology , Microglia/drug effects , Neuronal Plasticity/drug effects , Phytotherapy , Protein-Tyrosine Kinases/physiology , Alzheimer Disease/genetics , Amyloid beta-Protein Precursor/genetics , Animals , Arginase/biosynthesis , Arginase/genetics , Cerebral Cortex/chemistry , Cerebral Cortex/drug effects , Cerebral Cortex/pathology , Chalcone/therapeutic use , Dendritic Spines/drug effects , Dendritic Spines/ultrastructure , Disease Models, Animal , Donepezil/pharmacology , Donepezil/therapeutic use , Enzyme Induction/drug effects , Escape Reaction/drug effects , Female , Hippocampus/chemistry , Hippocampus/drug effects , Hippocampus/pathology , Male , Memory, Long-Term/drug effects , Memory, Short-Term/drug effects , Mice , Mice, Inbred C57BL , Mice, Transgenic , Microglia/physiology , Morris Water Maze Test/drug effects , Nerve Tissue Proteins/biosynthesis , Nerve Tissue Proteins/genetics , Neuronal Plasticity/physiology , Nitric Oxide Synthase Type II/biosynthesis , Nitric Oxide Synthase Type II/genetics , Presenilin-1/genetics , Random Allocation
17.
Eur J Pharmacol ; 869: 172857, 2020 Feb 15.
Article in English | MEDLINE | ID: mdl-31837991

ABSTRACT

Geniposidic acid (GPA) is an extract from Eucommia ulmoides Oliv. Bark (Eucommiaceae). Accumulating evidences have reported GPA has anti-aging, anti-oxidative stress, anti-inflammatory and neurotrophic effects on neurons. However, whether GPA could alleviate memory deficits in Alzheimer's disease animal models is not clear. We aimed to investigate the effect of GPA treatment on cognitive performance, Aß deposition and glial cells activation in the transgenic mouse model of AD. 6-7 months APP/PS1 mice were given GPA for 90 days; behavioral experiments were executed to estimate the memory and spatial learning abilities of mice, and the mechanism of neuroprotective effect of GPA was investigated with a focus on amyloid-ß deposition, astrocytes and microglia activation and neuroinflammation. GPA treatment significantly improved the spatial learning and memory abilities and also decreased cerebral amyloid-ß deposition in APP/PS1 mice. Via HE staining, we found that GPA could ameliorate histopathological changes in cerebrum. We also found that GPA treatment inhibited the activation of astrocytes and microglia, down-regulated the expression of pro-inflammatory cytokines and iNOS, and up-regulated the expression of anti-inflammatory cytokines and Arg-1. In addition, GPA down-regulated the gene expression of HMGB-1 receptors (TLR2, TLR4 and RAGE) then mediated MyD88, TRAF6 and phospho-ERK1/2, subsequently modulated the expression of key AP-1 and NF-κB family members (c-Fos, c-Jun and p65). The reversal of the pro-inflammatory state suggested GPA can serves as a multi-target candidate by alleviating Aß deposition and neuroinflammation for the auxiliary therapy of Alzheimer's disease.


Subject(s)
Alzheimer Disease/drug therapy , Anti-Inflammatory Agents/therapeutic use , Iridoid Glucosides/therapeutic use , Memory Disorders/drug therapy , Neuroprotective Agents/therapeutic use , Alzheimer Disease/genetics , Alzheimer Disease/metabolism , Amyloid beta-Peptides/metabolism , Amyloid beta-Protein Precursor/genetics , Animals , Anti-Inflammatory Agents/pharmacology , Astrocytes/drug effects , Cerebral Cortex/drug effects , Cerebral Cortex/metabolism , Cytokines/metabolism , Disease Models, Animal , Down-Regulation , Hippocampus/drug effects , Hippocampus/metabolism , Iridoid Glucosides/pharmacology , Memory/drug effects , Memory Disorders/genetics , Memory Disorders/metabolism , Mice, Transgenic , Microglia/drug effects , Neuroprotective Agents/pharmacology , Presenilin-1/genetics , Signal Transduction/drug effects , Spatial Learning/drug effects , Toll-Like Receptor 2/genetics , Toll-Like Receptor 4/genetics
18.
Front Psychol ; 8: 819, 2017.
Article in English | MEDLINE | ID: mdl-28588531

ABSTRACT

Although previous investigations have agreed that Chinese rural-to-urban migrants' socioeconomic status (SES) increases with their migration, the association between SES and subjective well-being is uncertain. To address this research gap, the present study proposed that the association between objective SES and subjective well-being is mediated by subjective SES. This model was tested with a sample of 432 Chinese rural-to-urban migrants. The results indicate a significant association between objective SES and subjective well-being and a partial mediating effect of subjective SES. Furthermore, subjective social mobility, which is one's expectation about the possibility to move upward in the social hierarchy, was found to moderate both the direct path from objective SES to subjective well-being and the indirect path from subjective SES to subjective well-being. These findings suggest that Chinese rural-to-urban migrants gained in subjective well-being not only because of direct financial achievement but also because of their perceptions and beliefs about their relative social status.

19.
Acta Crystallogr E Crystallogr Commun ; 71(Pt 1): o32, 2015 Jan 01.
Article in English | MEDLINE | ID: mdl-25705492

ABSTRACT

In the title compound, C17H12Cl4FNO4, the configuration of the cyclo-alkene skeleton is endo,cis. The benzene ring is twisted by 71.01 (11)° from the attached pyrrolidine ring. In the crystal, one of the methine groups of the fused-ring system forms a weak C-H⋯O hydrogen bond. The other methine groups participates in a C-H⋯F inter-action to the same adjacent mol-ecule. Together, these generate [010] chains.

20.
Chang Gung Med J ; 27(5): 379-84, 2004 May.
Article in English | MEDLINE | ID: mdl-15366815

ABSTRACT

Glycogen storage disease type II (GSD-II), also known as Pompe disease, is a rare autosomial recessive disease due to deficiency of lysosomal acid alpha-glucosidase (GAA). The infantile-onset form is the most severe, and most patients present with hypotonia and cardiomyopathy in early infancy. We report on a typical case of Pompe disease in a patient who died at 8 months of age due to aspiration pneumonia and hypertrophic cardiomyopathy. Genetic studies showed deficient GAA activity and mutation of the GAA gene with Gly615Arg (exon 13, G1845A). On autopsy, glycogen had markedly accumulated in the liver, myocardium and skeletal muscle. The neurons of the anterior horn of the spinal cord and medulla were also involved, but the cortex was spared. These neurological-histologic findings may explain the clinical features of poor motor function, decreased deep tendon reflexes and lack of mental retardation.


Subject(s)
Glucan 1,4-alpha-Glucosidase/genetics , Glycogen Storage Disease Type II/genetics , Mutation, Missense/genetics , Base Sequence , Cardiomyopathy, Hypertrophic/etiology , DNA Mutational Analysis , Fatal Outcome , Female , Glucan 1,4-alpha-Glucosidase/deficiency , Glycogen Storage Disease Type II/complications , Glycogen Storage Disease Type II/enzymology , Humans , Infant , Male , Muscle, Skeletal/pathology , Myocytes, Cardiac/pathology , Pedigree , Pneumonia/complications , alpha-Glucosidases
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