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1.
Heliyon ; 10(12): e32609, 2024 Jun 30.
Article in English | MEDLINE | ID: mdl-38975192

ABSTRACT

Closed-loop neuromodulation with intelligence methods has shown great potentials in providing novel neuro-technology for treating neurological and psychiatric diseases. Development of brain-machine interactive neuromodulation strategies could lead to breakthroughs in precision and personalized electronic medicine. The neuromodulation research tool integrating artificial intelligent computing and performing neural sensing and stimulation in real-time could accelerate the development of closed-loop neuromodulation strategies and translational research into clinical application. In this study, we developed a brain-machine interactive neuromodulation research tool (BMINT), which has capabilities of neurophysiological signals sensing, computing with mainstream machine learning algorithms and delivering electrical stimulation pulse by pulse in real-time. The BMINT research tool achieved system time delay under 3 ms, and computing capabilities in feasible computation cost, efficient deployment of machine learning algorithms and acceleration process. Intelligent computing framework embedded in the BMINT enable real-time closed-loop neuromodulation developed with mainstream AI ecosystem resources. The BMINT could provide timely contribution to accelerate the translational research of intelligent neuromodulation by integrating neural sensing, edge AI computing and stimulation with AI ecosystems.

2.
Neurobiol Dis ; 199: 106581, 2024 Jun 25.
Article in English | MEDLINE | ID: mdl-38936434

ABSTRACT

BACKGROUND: Deep brain stimulation (DBS) targeting the globus pallidus internus (GPi) and subthalamic nucleus (STN) is employed for the treatment of dystonia. Pallidal low-frequency oscillations have been proposed as a pathophysiological marker for dystonia. However, the role of subthalamic oscillations and STN-GPi coupling in relation to dystonia remains unclear. OBJECTIVE: We aimed to explore oscillatory activities within the STN-GPi circuit and their correlation with the severity of dystonia and efficacy achieved by DBS treatment. METHODS: Local field potentials were recorded simultaneously from the STN and GPi from 13 dystonia patients. Spectral power analysis was conducted for selected frequency bands from both nuclei, while power correlation and the weighted phase lag index were used to evaluate power and phase couplings between these two nuclei, respectively. These features were incorporated into generalized linear models to assess their associations with dystonia severity and DBS efficacy. RESULTS: The results revealed that pallidal theta power, subthalamic beta power and subthalamic-pallidal theta phase coupling and beta power coupling all correlated with clinical severity. The model incorporating all selected features predicts empirical clinical scores and DBS-induced improvements, whereas the model relying solely on pallidal theta power failed to demonstrate significant correlations. CONCLUSIONS: Beyond pallidal theta power, subthalamic beta power, STN-GPi couplings in theta and beta bands, play a crucial role in understanding the pathophysiological mechanism of dystonia and developing optimal strategies for DBS.

3.
J Neural Eng ; 21(3)2024 May 07.
Article in English | MEDLINE | ID: mdl-38653252

ABSTRACT

Objective.Beta triggered closed-loop deep brain stimulation (DBS) shows great potential for improving the efficacy while reducing side effect for Parkinson's disease. However, there remain great challenges due to the dynamics and stochasticity of neural activities. In this study, we aimed to tune the amplitude of beta oscillations with different time scales taking into account influence of inherent variations in the basal ganglia-thalamus-cortical circuit.Approach. A dynamic basal ganglia-thalamus-cortical mean-field model was established to emulate the medication rhythm. Then, a dynamic target model was designed to embody the multi-timescale dynamic of beta power with milliseconds, seconds and minutes. Moreover, we proposed a closed-loop DBS strategy based on a proportional-integral-differential (PID) controller with the dynamic control target. In addition, the bounds of stimulation amplitude increments and different parameters of the dynamic target were considered to meet the clinical constraints. The performance of the proposed closed-loop strategy, including beta power modulation accuracy, mean stimulation amplitude, and stimulation variation were calculated to determine the PID parameters and evaluate neuromodulation performance in the computational dynamic mean-field model.Main results. The Results show that the dynamic basal ganglia-thalamus-cortical mean-field model simulated the medication rhythm with the fasted and the slowest rate. The dynamic control target reflected the temporal variation in beta power from milliseconds to minutes. With the proposed closed-loop strategy, the beta power tracked the dynamic target with a smoother stimulation sequence compared with closed-loop DBS with the constant target. Furthermore, the beta power could be modulated to track the control target under different long-term targets, modulation strengths, and bounds of the stimulation increment.Significance. This work provides a new method of closed-loop DBS for multi-timescale beta power modulation with clinical constraints.


Subject(s)
Basal Ganglia , Beta Rhythm , Deep Brain Stimulation , Parkinson Disease , Deep Brain Stimulation/methods , Parkinson Disease/therapy , Parkinson Disease/physiopathology , Humans , Basal Ganglia/physiopathology , Basal Ganglia/physiology , Beta Rhythm/physiology , Models, Neurological , Thalamus/physiology , Thalamus/physiopathology , Cerebral Cortex/physiopathology , Cerebral Cortex/physiology , Computer Simulation , Neural Pathways/physiology , Neural Pathways/physiopathology
4.
Neurobiol Dis ; 197: 106519, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38685358

ABSTRACT

Neural oscillations are critical to understanding the synchronisation of neural activities and their relevance to neurological disorders. For instance, the amplitude of beta oscillations in the subthalamic nucleus has gained extensive attention, as it has been found to correlate with medication status and the therapeutic effects of continuous deep brain stimulation in people with Parkinson's disease. However, the frequency stability of subthalamic nucleus beta oscillations, which has been suggested to be associated with dopaminergic information in brain states, has not been well explored. Moreover, the administration of medicine can have inverse effects on changes in frequency and amplitude. In this study, we proposed a method based on the stationary wavelet transform to quantify the amplitude and frequency stability of subthalamic nucleus beta oscillations and evaluated the method using simulation and real data for Parkinson's disease patients. The results suggest that the amplitude and frequency stability quantification has enhanced sensitivity in distinguishing pathological conditions in Parkinson's disease patients. Our quantification shows the benefit of combining frequency stability information with amplitude and provides a new potential feedback signal for adaptive deep brain stimulation.


Subject(s)
Deep Brain Stimulation , Parkinson Disease , Subthalamic Nucleus , Parkinson Disease/drug therapy , Parkinson Disease/therapy , Parkinson Disease/physiopathology , Humans , Deep Brain Stimulation/methods , Male , Female , Middle Aged , Aged , Beta Rhythm/physiology , Beta Rhythm/drug effects , Antiparkinson Agents/therapeutic use , Wavelet Analysis
5.
Article in English | MEDLINE | ID: mdl-38446651

ABSTRACT

Closed-loop deep brain stimulation (DBS) shows great potential for precise neuromodulation of various neurological disorders, particularly Parkinson's disease (PD). However, substantial challenges remain in clinical translation due to the complex programming procedure of closed-loop DBS parameters. In this study, we proposed an online optimized amplitude adaptive strategy based on the particle swarm optimization (PSO) and proportional-integral-differential (PID) controller for modulation of the beta oscillation in a PD mean field model over long-term dynamic conditions. The strategy aimed to calculate the stimulation amplitude adapting to the fluctuations caused by circadian rhythm, medication rhythm, and stochasticity in the basal ganglia-thalamus-cortical circuit. The PID gains were optimized online using PSO, based on modulation accuracy, mean stimulation amplitude, and stimulation variation. The results showed that the proposed strategy optimized the stimulation amplitude and achieved beta power modulation under the influence of circadian rhythm, medication rhythm, and stochasticity of beta oscillations. This work offers a novel approach for precise neuromodulation with the potential for clinical translation.


Subject(s)
Deep Brain Stimulation , Parkinson Disease , Humans , Deep Brain Stimulation/methods , Neurons/physiology , Basal Ganglia/physiology , Parkinson Disease/therapy , Thalamus/physiology
6.
Nat Commun ; 15(1): 619, 2024 Jan 19.
Article in English | MEDLINE | ID: mdl-38242904

ABSTRACT

The neural signals produced by varying electrical stimulation parameters lead to characteristic neural circuit responses. However, the characteristics of neural circuits reconstructed by electrical signals remain poorly understood, which greatly limits the application of such electrical neuromodulation techniques for the treatment of spinal cord injury. Here, we develop a dual electrical stimulation system that combines epidural electrical and muscle stimulation to mimic feedforward and feedback electrical signals in spinal sensorimotor circuits. We demonstrate that a stimulus frequency of 10-20 Hz under dual stimulation conditions is required for structural and functional reconstruction of spinal sensorimotor circuits, which not only activates genes associated with axonal regeneration of motoneurons, but also improves the excitability of spinal neurons. Overall, the results provide insights into neural signal decoding during spinal sensorimotor circuit reconstruction, suggesting that the combination of epidural electrical and muscle stimulation is a promising method for the treatment of spinal cord injury.


Subject(s)
Spinal Cord Injuries , Spinal Cord , Humans , Spinal Cord/physiology , Spinal Cord Injuries/therapy , Motor Neurons , Electric Stimulation
7.
Heliyon ; 9(8): e18187, 2023 Aug.
Article in English | MEDLINE | ID: mdl-37701401

ABSTRACT

[This corrects the article DOI: 10.1016/j.heliyon.2023.e17388.].

8.
J Stroke Cerebrovasc Dis ; 32(11): 107373, 2023 Nov.
Article in English | MEDLINE | ID: mdl-37734179

ABSTRACT

OBJECTIVE: Our previous study found that ErbB4 gene expression was changed after oxygen-glucose deprivation/reperfusion (OGD/R). However, the exact role and mechanism of ErbB4 in brain ischemia are largely unknown. In this study, we explored the protective effects of ErbB4 and its possible mechanism after OGD/R. METHODS: Cerebral ischemia/reperfusion (I/R) injury model was established in vitro and in vivo. Cell viability, apoptosis, and ROS production were measured by MTT, TUNEL, and fluorescent probe 2', 7'-dichlorofluorescein diacetate (DCFH-DA). Infarct size was evaluated by TTC. We performed bioinformatics analyses to screen for novel key genes involved in ErbB4 changes. RNA-Seq was used to transcriptome analysis. RNA and protein expression were detected by quantitative RT‒PCR and western bloting. RESULTS: The expression of 80-kDa ErbB4 decreased after cerebral I/R injury in vitro and in vivo. Co-expression network analysis revealed that ErbB4 expression was correlated with the changes in Adrb1, Adrb2, Ldlr, and Dab2. Quantitative RT‒PCR revealed that the mRNA expression levels of Adrb1, Adrb2, and Dab2 were upregulated, and that of Ldlr was decreased after OGD/R. Activation of ErbB4 expression by neuregulin 1 (NRG1) significantly promoted cell survival, attenuated hippocampal apoptosis, and decreased ROS production after OGD/R. Furthermore, the elimination of ErbB4 using a specific siRNA reversed these beneficial effects. CONCLUSION: Our data revealed the neuroprotective effects of ErbB4 against OGD/R injury, and the action could be related to changes in the ErbB4 membrane-associated fragment and the expression of Adrb1, Adrb2, Ldlr, and Dab2.

9.
Heliyon ; 9(8): e18649, 2023 Aug.
Article in English | MEDLINE | ID: mdl-37560637

ABSTRACT

Purpose: The aim of this study was to investigate the protective effect of long non-coding lnc-PXMP4-2-4 on myocardial cell damage caused by acute myocardial infarction (AMI). Methods: Peripheral blood mononuclear cells (PBMC) were collected from 24 patients with AMI on the day of admission, the first day after percutaneous coronary intervention (PCI) and the third day after surgery, and 24 patients with clinical control group. Real-time quantitative PCR(QRT-PCR) was used to detect the expression of related genes. Then in human cardiomyocytes (AC16), Cell Counting Kit-8 (CCK-8) was used to determine cell viability, lactate dehydrogenase release assay (LDH) was used to determine the release of lactate dehydrogenase, PCR was used to detect the expression of genes, cell death was detected by flow cytometry, and the expression of related proteins was measured by Western blot. The effect of lnc-PXMP4-2-4 was further studied by silencing and overexpressing lnc-PXMP4-2-4. Results: Compared with clinical control group, the expression of lnc-PXMP4-2-4 in PBMC of AMI patients was significantly higher than it. Compared with pre-operation, the expression of lnc-PXMP4-2-4 was significantly up-regulated on day 1 after PCI, and recovered to pre-operation level on day 3 after surgery. In AC16 cells, lnc-PXMP4-2-4 inhibited the proliferation of AC16, promoted the release of LDH and increased cell death, aggravated the cardiomyocyte injury caused by H2O2, and inhibited the expression of JAK2 and STAT3 mRNA and protein. The up-regulation of lnc-PXMP-4-2-4 had the opposite effect. In addition, the inhibition of the signal pathway by JAK2/STAT3 pathway inhibitor AG490 partially weakened the enhanced viability of AC16 cells, decreased LDH release and apoptosis induced by lnc-PXMP4-2-4 overexpression, increased Bcl-2 expression and down-regulated Bax expression. Conclusion: Therefore, we conclude that lnc-PXMP4-2-4 protects cardiomyocytes from injury by activating the JAK2/STAT3 signaling pathway.

10.
IEEE Trans Biomed Circuits Syst ; 17(5): 1111-1124, 2023 Oct.
Article in English | MEDLINE | ID: mdl-37535485

ABSTRACT

This article presents a multichannel EEG/BIOZ acquisition application specific integrated circuit (ASIC) with 4 EEG channels and a BIOZ channel, a switch resistor low-pass filter (SR-LPF). Each EEG channel includes a frontend, and a 4-channel multiplexed analog-to-digital converter (ADC), while the BIOZ channel features a pseudo sine current generator and a pair of readout paths with multiplexed SR-LPF and ADC. The ASIC is designed for size and power minimization, utilizing a 3-step ADC with a novel signal-dependent low power strategy. The proposed ADC operates at a sampling rate of 1600 S/s with a resolution of 15.2 bits, occupying only 0.093 mm2. With the help of the proposed signal-dependent low-power strategy, the ADC's power dissipation drops from 32.2 µW to 26.4 µW, resulting in an 18% efficiency improvement without performance degradation. Moreover, the EEG channels deliver excellent noise performance with a NEF of 7.56 and 27.8 nV/√Hz at the expense of 0.16 mm2 per channel. In BIOZ measurement, a 5-bit programmable current source is used to generate pseudo sine injection current ranging from 0 to 22 µApp, and the detection sensitivity reaches 2.4 mΩ/√Hz. Finally, the presented multichannel EEG/BIOZ acquisition ASIC has a compact active area of 1.5 mm2 in an 180nm CMOS technology.


Subject(s)
Amplifiers, Electronic , Electroencephalography
11.
Heliyon ; 9(6): e17388, 2023 Jun.
Article in English | MEDLINE | ID: mdl-37408899

ABSTRACT

Acute myocardial infarction has increasingly become a global health problem and is a primary cause of cardiovascular disease-related death. Although long noncoding RNAs have been reported to play an important role in various cardiovascular diseases, their protective effects on cardiomyocytes against reactive oxygen species-induced oxidative injury have nonetheless been poorly studied. The present study aims to explore the effect of a novel long noncoding RNA, NONHSAT098487.2, on cardiomyocyte injury induced by H2O2. The expression of NONHSAT098487.2 and pathway-related genes was evaluated by quantitative real-time polymerase chain reaction. Cell viability, release of lactate dehydrogenase, and apoptosis levels were detected by cell counting kit-8, lactate dehydrogenase release assay, and flow cytometry analysis, respectively. The protein levels were estimated by western blotting. The results showed that NONHSAT098487.2 was expressed at a high level in peripheral blood mononuclear cells from acute myocardial infarction patients, which showed a positive correlation with the HS-TnT and CK-MB levels of patients. Furthermore, it is also upregulated in human AC16 cardiomyocytes treated with H2O2 or exposed to hypoxia/reoxygenation conditions. Knockdown of NONHSAT098487.2 restrained the Notch signalling pathway and aggravated H2O2-induced cardiomyocyte oxidative stress injury. In contrast, overexpression of NONHSAT098487.2 activated the Notch signalling pathway and suppressed H2O2-induced oxidative stress injury. However, the Notch inhibitor DAPT weakened the protective effects of NONHSAT098487.2. Therefore, the novel lncRNA NONHSAT098487.2 may play a role in protecting cardiomyocytes from oxidative stress injury by regulating the Notch pathway.

12.
Neurobiol Dis ; 183: 106178, 2023 07.
Article in English | MEDLINE | ID: mdl-37268239

ABSTRACT

BACKGROUND AND OBJECTIVE: The balance between neural oscillations provides valuable insights into the organisation of neural oscillations related to brain states, which may play important roles in dystonia. We aim to investigate the relationship of the balance in the globus pallidus internus (GPi) with the dystonic severity under different muscular contraction conditions. METHODS: Twenty-one patients with dystonia were recruited. All of them underwent bilateral GPi implantation, and local field potentials (LFPs) from the GPi were recorded via simultaneous surface electromyography. The power spectral ratio between neural oscillations was computed as the measure of neural balance. This ratio was calculated under high and low dystonic muscular contraction conditions, and its correlation with the dystonic severity was assessed using clinical scores. RESULTS: The power spectral of the pallidal LFPs peaked in the theta and alpha bands. Within participant comparison showed that the power spectral of the theta oscillations significantly increased during high muscle contraction compared with that during low contraction. The power spectral ratios between the theta and alpha, theta and low beta, and theta and high gamma oscillations were significantly higher during high contraction than during low contraction. The total score and motor score were associated with the power spectral ratio between the low and high beta oscillations, which was correlated with the dystonic severity both during high and low contractions. The power spectral ratios between the low beta and low gamma and between the low beta and high gamma oscillations showed a significantly positive correlation with the total score during both high and low contractions; a correlation with the motor scale score was found only during high contraction. Meanwhile, the power spectral ratio between the theta and alpha oscillations during low contraction showed a significantly negative correlation with the total score. The power spectral ratios between the alpha and high beta, alpha and low gamma, and alpha and high gamma oscillations were significantly correlated with the dystonic severity only during low contraction. CONCLUSION: The balance between neural oscillations, as quantified by the power ratio between specific frequency bands, differed between the high and low muscular contraction conditions and was correlated with the dystonic severity. The balance between the low and high beta oscillations was correlated with the dystonic severity during both conditions, making this parameter a new possible biomarker for closed-loop deep brain stimulation in patients with dystonia.


Subject(s)
Deep Brain Stimulation , Dystonia , Dystonic Disorders , Humans , Globus Pallidus , Dystonia/therapy , Dystonic Disorders/therapy , Electromyography
13.
Biochem Biophys Res Commun ; 648: 28-35, 2023 03 12.
Article in English | MEDLINE | ID: mdl-36724557

ABSTRACT

Methylated CpG binding protein 2 (MeCP2) plays an important role in the development and normal function of the neural system. Abnormally high expression of MECP2 leads to a subtype of autism called MECP2 duplication syndrome and MECP2 is considered one of the key pathogenic genes for autism spectrum disorders. However, the effect of MECP2 overexpression on neural activity is still not fully understood. Thus, transgenic (TG) animals that abnormally overexpress MeCP2 are important disease models in research on neurological function and autism. To create an animal model with a stronger and more stable autism phenotype, this study established a human MECP2 TG rat model and evaluated its movement ability, anxiety, and social behavior through behavioral tests. The results showed that MECP2 TG rats had an abnormally increased anxiety phenotype and social deficits in terms of abnormal social approach and social novelty preference, but no movement disorder. These autism-like behavioral phenotypes suggest that human MECP2 TG rats are suitable models for studying autism as they show more severe social deficit phenotypes and without interference from movement disorders affecting other phenotypes, which is an issue for mouse models with MECP2 duplication. In addition, this study performed preliminary exploration of the influence of the human MECP2 transgene on neural oscillation stability of the medial prefrontal cortex (mPFC), which is an important brain region for social interactions. Oscillation stability in MECP2 TG rats showed abnormal responses to social conditions. Overall, the results of this study provide a new research tool for understanding the mechanism of social impairment and treatment of autism. The results also provide evidence for the influence of MECP2 duplication on mPFC neural activity.


Subject(s)
Autistic Disorder , Mental Retardation, X-Linked , Methyl-CpG-Binding Protein 2 , Animals , Humans , Mice , Rats , Anxiety/genetics , Autistic Disorder/genetics , Brain/metabolism , Disease Models, Animal , Mental Retardation, X-Linked/genetics , Methyl-CpG-Binding Protein 2/genetics , Methyl-CpG-Binding Protein 2/metabolism , Mice, Transgenic , Rats, Transgenic
14.
PLoS Biol ; 21(2): e3001999, 2023 02.
Article in English | MEDLINE | ID: mdl-36780560

ABSTRACT

Although previous studies have reported correlations between alpha oscillations and the "retention" subprocess of working memory (WM), causal evidence has been limited in human neuroscience due to the lack of delicate modulation of human brain oscillations. Conventional transcranial alternating current stimulation (tACS) is not suitable for demonstrating the causal evidence for parietal alpha oscillations in WM retention because of its inability to modulate brain oscillations within a short period (i.e., the retention subprocess). Here, we developed an online phase-corrected tACS system capable of precisely correcting for the phase differences between tACS and concurrent endogenous oscillations. This system permits the modulation of brain oscillations at the target stimulation frequency within a short stimulation period and is here applied to empirically demonstrate that parietal alpha oscillations causally relate to WM retention. Our experimental design included both in-phase and anti-phase alpha-tACS applied to participants during the retention subprocess of a modified Sternberg paradigm. Compared to in-phase alpha-tACS, anti-phase alpha-tACS decreased both WM performance and alpha activity. These findings strongly support a causal link between alpha oscillations and WM retention and illustrate the broad application prospects of phase-corrected tACS.


Subject(s)
Memory, Short-Term , Transcranial Direct Current Stimulation , Humans , Memory, Short-Term/physiology , Brain/physiology , Cognition
15.
Semin Ophthalmol ; 38(3): 283-293, 2023 Apr.
Article in English | MEDLINE | ID: mdl-35912896

ABSTRACT

PURPOSES: The purpose of this meta-analysis is to systematically compare the safety, efficacy, and predictability of small incision lenticule extraction (SMILE) and laser in situ keratomileusis (LASIK). METHODS: This study covered the data searched from the PubMed, the EMBASE and the Cochrane Library. The Cochrane Handbook was also referred to as evaluating the quality of the included studies. In addition, this meta-analysis was performed using Revman 5.4 software. RESULTS: A total of 11 randomized controlled trails (RCTs) were included. The proportion of eyes with refraction within ±0.5D was higher in LASIK group compared with SMILE group (RR, 0.91; 95% CI, 0.83 to 0.99; p = .04). The spherical aberration (SA) was smaller in SMILE group compared with LASIK group (RR, -0.12; 95% CI, -0.23 to -0.01; p = .04). There were no significant differences between two groups with regard to final mean refractive spherical equivalent (SE) (MD, -0.04; 95% CI, -0.12 to 0.03; p = .22), proportion of eyes losing one or more lines of corrected distance visual acuity (CDVA) (RR, 1.14; 95% CI, 0.58 to 2.27; p = .70), proportion of eyes with uncorrected distance visual acuity (UCVA) of 20/20 or better (RR, 0.99; 95% CI, 0.94 to 1.05; p = .71), postoperative mean logMAR UCVA (MD, 0.01; 95% CI, -0.00 to 0.03; p = .13), postoperative refraction within ±1.0D (RR, 1.00; 95% CI, 0.98 to 1.02; p = .60), postoperative astigmatism within ±0.25, 0.5 and 1.0D (RR, 0.80, 0.99, 1.00; 95% CI, 0.35 to 1.83, 0.94 to 1.05, 0.98 to 1.02; p = .60, 0.86, 0.87), postoperative higher order aberrations (HOAs) (RR, 0.00; 95% CI, -0.16 to 0.16; p = .99). CONCLUSION: For predictability, LASIK was superior to SMILE. There were comparably safety and efficacy for the correction of myopia and myopic astigmatism in SMILE and LASIK. SA was smaller after SMILE than after LASIK.


Subject(s)
Astigmatism , Keratomileusis, Laser In Situ , Myopia , Humans , Astigmatism/surgery , Randomized Controlled Trials as Topic , Refraction, Ocular , Corneal Stroma/surgery , Myopia/surgery , Lasers, Excimer/therapeutic use , Treatment Outcome
16.
Can J Physiol Pharmacol ; 101(1): 18-26, 2023 Jan 01.
Article in English | MEDLINE | ID: mdl-36315971

ABSTRACT

Autophagy has been implicated in stroke. Our previous study showed that the FoxO3 transcription factor promotes autophagy after transient cerebral ischemia/reperfusion (I/R). However, whether the Akt/FoxO3 signaling pathway plays a regulatory role in autophagy in cerebral I/R-induced oxidative stress injury is still unclear. The present study aims to investigate the effects of the Akt/FoxO3 signaling pathway on autophagy activation and neuronal injury in vitro and in vivo. By employing LY294002 or insulin to regulate the Akt/FoxO3 signaling pathway, we found that insulin pretreatment increased cell viability, decreased reactive oxygen species production, and enhanced the expression of antiapoptotic and autophagy-related proteins following H2O2 injury in HT22 cells. In addition, insulin significantly decreased neurological deficit scores and infarct volume and increased the expression of antiapoptotic and autophagy-related proteins following I/R injury in rats. However, LY294002 showed the opposite effects under these conditions. Altogether, these results indicate that Akt/FoxO3 signaling pathway activation inhibited oxidative stress-mediated cell death through activation of autophagy. Our study supports a critical role for the Akt/FoxO3 signaling pathway in autophagy activation in stroke.


Subject(s)
Brain Ischemia , Insulins , Ischemic Stroke , Reperfusion Injury , Stroke , Rats , Animals , Proto-Oncogene Proteins c-akt/metabolism , Hydrogen Peroxide/pharmacology , Signal Transduction , Oxidative Stress , Autophagy , Brain Ischemia/drug therapy , Brain Ischemia/metabolism , Reperfusion Injury/drug therapy , Reperfusion Injury/metabolism , Autophagy-Related Proteins/metabolism , Autophagy-Related Proteins/pharmacology , Insulins/metabolism , Insulins/pharmacology , Brain/metabolism , Apoptosis
18.
Front Aging Neurosci ; 14: 988193, 2022.
Article in English | MEDLINE | ID: mdl-36172484

ABSTRACT

Rhythmic neural activities are critical to the efficiency of regulatory procedures in brain functions. However, brain functions usually decline in aging as accompanied by frequency shift and temporal dedifferentiation of neural activities. Considering the strong oscillations and long-lasting after-effects induced by rhythmic brain stimulations, we suggest that non-invasive rhythmic brain stimulation technique may help restore the natural frequencies of neural activities in aging to that in younger and healthy brains. Although with tremendous work to do, this technique offers great opportunities for the restoration of normal brain functions in aging, or even in those suffering from neurodegenerative diseases and neuropsychiatric disorders.

19.
Comput Math Methods Med ; 2022: 6735100, 2022.
Article in English | MEDLINE | ID: mdl-36081429

ABSTRACT

Objective: To investigate the effects of quantitative nursing and psychological interventions on stress response, mental health, and prognosis in endometrial cancer patients having laparoscopic surgery. Methods: The random number table approach was used to identify and split 98 patients with endometrial cancer undergoing laparoscopic surgery at our hospital's Obstetrics and Gynecology Hospital (n = 49) into observation and control groups (n = 49) from May 2020 to February 2022. Both groups received standard care in the operating room, while those in the observation group received quantitative and psychological interventions in the operating room. Both groups were compared for perioperative markers, stress indicators, coping strategies, and pain levels. Results: In terms of age, TNM stage, or pathology, there was no statistically significant difference between the two groups (P > 0.05). Both the observation and control groups experienced statistically significant (P < 0.05) reductions in the perioperative markers of operation time, intraoperative blood loss, and overall hospital stay. Both groups' SAS and SDS scores were lower than they had been prior to surgery, but the observation group had lower scores than the control group, and these differences were statistically significant (P < 0.05). Postsurgery, the observation group's cortisol and adrenaline levels were lower than those of the control group, and both groups' levels were higher than before surgery, with statistical significance (P < 0.05) in both groups. Neither coping style nor pain level differed significantly between the two groups before surgery (P > 0.05). Postoperatively, while yield item scores were lower and faces scores were higher than the control group, the observation group's avoidance item score was lower than the control group. All with statistical significance. There were substantial differences in NRS SCORE between observers and controls. Conclusion: After laparoscopic surgery to remove endometrial cancer, patients may benefit from the combination of quantitative nursing and psychological intervention in the operating room to alleviate postoperative anxiety and sadness and reduce stress reaction.


Subject(s)
Endometrial Neoplasms , Laparoscopy , Endometrial Neoplasms/pathology , Endometrial Neoplasms/surgery , Female , Humans , Operating Rooms , Pain/surgery , Pregnancy , Prognosis , Psychosocial Intervention
20.
Semin Ophthalmol ; 37(6): 749-755, 2022 Aug.
Article in English | MEDLINE | ID: mdl-35666616

ABSTRACT

PURPOSES: The purpose of this meta-analysis is to systematically compare the IOP-lowering effect of different microstents combined with phacoemulsification versus phacoemulsification for patients with OAG and cataract. METHODS: This work was done through the data searched from PubMed, EMBASE, and the Cochrane Library. The Cochrane Handbook was also used to evaluate the quality of the included studies. In addition, this meta-analysis was performed using Revman 5.4 software. RESULTS: A total of 8 randomized controlled trials (RCTs) were included. Compared with phacoemulsification alone, microstent implantation with phacoemulsification resulted in significant reduction in the postoperative IOP (MD = -1.66, 95%CI: [-2.25 to -1.06]). Patients with medication free and patients with beyond 20% IOP reduction were significantly increased in the microstent implantation with phacoemulsification group compared with phacoemulsification alone group (RR = 1.54, 95%CI: [1.34 to 1.77]; RR = 1.34, 95%CI: [1.24 to 1.45]). CONCLUSION: Both microstent implantation with concurrent phacoemulsification and phacoemulsification alone result in a significant reduction in IOP. In terms of both reductions, microstent implantation with phacoemulsification significantly outperforms phacoemulsification alone.


Subject(s)
Cataract Extraction , Cataract , Glaucoma, Open-Angle , Phacoemulsification , Cataract/complications , Cataract Extraction/methods , Glaucoma, Open-Angle/complications , Glaucoma, Open-Angle/surgery , Humans , Intraocular Pressure , Phacoemulsification/methods , Randomized Controlled Trials as Topic , Stents
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