The effect of magnetic stimulation on differentiation of human induced pluripotent stem cells into neuron.

The effect of stem cell transplantation in the treatment of neural lesions is so far not satisfactory. Magnetic stimulation is a feasible exogenous interference to improve transplantation outcome. However, the effect of magnetic stimulation on the differentiation of induced pluripotent stem cells (iPSCs) into neuron has not been studied. In this experiment, an in vitro neuron differentiation system from human iPSCs were established and confirmed. Three magnetic stimuli (high frequency [HF], low frequency [LF], intermittent theta-burst stimulation [iTBS]) were applied twice a day during the differentiation process. Immunofluorescence and quantitative polymerase chain reaction (Q-PCR) were performed to analyze the effect of magnetic stimulation. Neural stem cells were obtained on day 12, manifested as floating neurospheres expressing neural precursor markers. All groups can differentiate into neurons while glial cell markers were not detected. Both Immunofluorescence and PCR results showed LF and iTBS increased the transcription and expression of neuronal nuclei (NeuN). HF significantly increased vesicular glutamate transporters2 transcription while iTBS promoted transcription of both synaptophysin and postsynaptic density protein 95. These results indicate that LF and iTBS can promote the generation of mature neurons from human iPSCs; HF may promote differentiate into glutamatergic neurons while iTBS may promote synapse formation during the differentiation.

Effects of constraint-induced movement therapy on brain glucose metabolism in a rat model of cerebral ischemia: a micro PET/CT study.

PURPOSE: Constraint-induced movement therapy (CIMT) can improve motor functions in stroke patients and ischemic rats. This study examined the effect of CIMT in ischemic rats using positron emission tomography (PET). METHODS: We used middle cerebral artery occlusion (MCAO) procedure to induce cerebral ischemia in rats. Male rats were divided into a negative control group (Normal, n = 4), a sham-operated group (Sham, n = 6), an ischemic group (Control, n = 6) and an ischemic CIMT-treated group (CIMT, n = 6). CIMT started at postoperative day 8 (d8) and lasted for 2 weeks. We utilized 2-[18F]-fluoro-2-deoxy-D-glucose (18F-FDG) micro PET/CT imaging to evaluate glucose metabolism in different brain regions at baseline, before, and after treatment, respectively. RESULTS: CIMT improved behavioral performance in the ischemic CIMT group. At the end of treatment, the CIMT group showed lower standardized uptake values (SUVs) in the ipsilateral cingulate, motor and somatosensory cortex, respectively; as well as the anterodorsal hippocampus compared to the Control group (1.80% ± 0.10% vs. 1.92% ± 0.08%, 1.32% ± 0.14% vs. 1.48% ± 0.09%, 1.18% ± 0.14% vs. 1.42% ± 0.15%, 1.68% ± 0.09% vs. 1.79% ± 0.06%, P < 0.05). We also observed higher SUVs in the acbcore shell and cortex insular of the contralateral hemisphere compared to the Control group (2.07% group in the acbcore shell and cortex insular of contralateral P < 0.05). CONCLUSION: CIMT improved behavioral outcomes in cerebral ischemic rats and this effect can be attributed to increased glucose utilization in the contralateral hemisphere.

Prognostic significance of heart rate turbulence parameters in patients with chronic heart failure.

BACKGROUND: This study is aimed to evaluate the clinical significance of heart rate turbulence (HRT) parameters in predicting the prognosis in patients with chronic heart failure (CHF). METHODS: From June 2011 to December 2012, a total of 104 CHF patients and 30 healthy controls were enrolled in this study. We obtained a 24-hour Holter ECG recording to assess the HRT parameters, included turbulence onset (TO), turbulence slope (TS), standard deviation of N-N intervals (SDNN), and resting heart rate (RHR). The relationships between HRT parameters and the prognosis of CHF patients were determined. RESULTS: The assessment follow-up period lasted until January 31, 2013. The overall mortality of CHF patients was 9.6% (10/104). Our results revealed that CHF patients had higher levels of TO than those of healthy subjects, but the TS levels of CHF patients were lower than that of the control group. CHF patients with NYHA grade IV had higher HRT1/2 rate than those with NYHA grade II/III. There were statistical differences in TS, LVEF, SDNN and RHR between the non-deteriorating group and the non-survivor group. Significant differences in TS among the three groups were also found. Furthermore, CHF patients in the non-survivor group had lower levels of TS than those in the deteriorating group. Correlation analyses indicated that TO negatively correlate with SDNN, while TS positively correlated with SDNN and left ventricular ejection fraction (LVEF). We also observed negative correlations between TS and left ventricular end-diastolic cavity dimension (LVEDD), RHR, homocysteine (Hcy) and C-reactive protein (CRP). Multivariate Cox regression analysis further confirmed that LVEF (≤30%), HRT2, SDNN and RHR were independent risk factors which can indicate poor prognosis in CHF patients. CONCLUSIONS: Our findings indicate that HRT may have good clinical predictive value in patients with CHF. Thus, quantifying HRT parameters could be a useful tool for predicting mortality in CHF patients.

Rules of acupoint selection in treatment of cancer-related insomnia with acupuncture and moxibustion based on data mining technology. / åŸºäºŽæ•°æ®æŒ–æŽ˜æŠ€æœ¯æŽ¢æžé’ˆç¸æ²»ç–—è‚¿ç˜¤ç›¸å ³æ€§å¤±çœ çš„é€‰ç©´è§„å¾‹.

OBJECTIVES: To analyze the rules of acupoint selection in treatment of cancer-related insomnia with acupuncture and moxibustion by data mining technology. METHODS: The articles of cancer-related insomnia treated with acupuncture and moxibustion were searched from CNKI, Wanfang, VIP, SinoMed, PubMed, WOS, Cochrane, and Embase databases, from the inception of each database to January 5, 2024. The prescription database of acupuncture and moxibustion for cancer-related insomnia was established. The descriptive analysis was conducted on the use frequency, meridian tropism and distribution of acupoints. Using SPSS Modeler 18.0 Apriori algorithm, the association rules of acupoint prescriptions were analyzed. With Cytoscape3.9.1 software used, the complex network diagram was plotted, and the cluster analysis of high-frequency acupoints was performed by SPSS26.0 software. RESULTS: Forty-one articles were included, and 67 prescriptions were extracted with 89 acupoints involved, and the total use frequency was 447 times. The top 4 acupoints of the high use frequency were Baihui (GV20), Sanyinjiao (SP6), Shenmen (HT7) and Shenting (GV24). The included meridians were the governor vessel, the spleen meridian, the bladder meridian, the conception vessel, the heart meridian and the stomach meridian. The selected acupoints were mostly distributed on the head, the neck and and the upper and lower limbs. The special acupoints of the high use frequency included the five-Shu points, the crossing points and yuan-primordial points. Regarding acupoint combination, GV24, SP6, HT7, and GV20 were highly correlated. The three effective clusters were categorized among the top 12 acupoints of the high use frequency. CONCLUSIONS: In treatment of cancer-related insomnia with acupuncture and moxibustion, the principle focuses on supporting the healthy qi, eliminating pathogens, regulating yin and yang, promoting the circulation of the governor vessel for regulating the spirit, and tranquilizing the mind. The core acupoint prescription may includes GV24, SP6, HT7 and GV20；combined with Zusanli (ST36) and Yintang (GV4+) to enhance the therapeutic effect.

[Electroacupuncture improves learning-memory ability by down-regulating expression of hippocampal Aß1-42 and Tau and NF-κB proteins in diabetic rats with cognitive impairment].

OBJECTIVE: To observe the effect of electroacupuncture(EA) on the expression of nuclear transcription factors κB (NF-κB) and Tau protein and content of amyloid (Aß) in diabetic rats with cognitive impairment, so as to explore its mechanism underlying improvement of learning-memory ability. METHODS: Male SD rats were randomly divided into normal control (n=9), model (n=9) and EA (n=9) groups. The diabetic mellitus model was established by feeding the rats with high fat and high sugar for 1 month and intraperitoneal injection of STZ (25 mg·kg-1·d-1) for 2 days. EA was applied to "Zusanli"(ST36) and "Neiting"(ST44) for 20 min, alternatively on both side every day, and "Yishu"(EX-B3) was stimulated by twirling the acupuncture needle with uniform reinforcing-reducing method for 1 min, followed by retaining it for 20 min. The treatment was conducted 6 times a week for 4 weeks. The learning-memory ability was evaluated by using Morris water maze swimming test. The blood glucose level was randomly detected by using a glucometer, the content of Aß1-42 in the hippocampal tissue was detected by ELISA, and the relative expression levels of hippocampal Tau and NF-κB p65 proteins and mRNAs were determined by Western blot and fluorescence quantitative real-time PCR, separately. RESULTS: After modeling, the blood glucose, escape latency, Aß1-42 content and the expression levels of Tau and NF-κB p65 proteins and mRNAs in the model group were significantly increased (P<0.01, P<0.05) in comparison with the normal control group. Following EA intervention, the modeling induced increase of blood glucose, escape latency, Aß1-42 content and the expression levels of Tau and NF-κB p65 proteins and mRNAs were reversed (P<0.05, P<0.01). CONCLUSION: EA can improve the learning-memory ability in rats with diabetic cognitive impairment, which may be related to its function in down-regulating the levels of hippocampal Aß1-42, Tau and NF-κB proteins.

[YANG Jun's clinical experience of acupuncture for oculomotor paralysis].

Professor YANG Jun's clinical experience of acupuncture and moxibustion for oculomotor paralysis is summarized. Professor YANG Jun pays attention to disease differentiation and syndrome differentiation in the treatment of this disease. According to the characteristics of oculomotor paralysis, "early diagnosis and seeking treatment from the source" is advocated. According to the etiology and pathogenesis, professor YANG divides oculomotor paralysis into three types: the syndrome of wind-evil attacking collaterals, the syndrome of spleen-stomach weakness and the syndrome of qi-deficiency and blood-stasis. As such, the acupoints are selected according to syndrome differentiation, and several different acupuncture methods (pricking needling at eyelids, penetrating needling and lifting eyelids and contralateral- balance needling on the healthy side) are adopted to improve the symptoms of oculomotor paralysis. It is also suggested to use the combination of scalp acupuncture and electroacupuncture to achieve the best dose-effect state. Moreover, local stimulation around the eyes is important to achieve the effects of "qi reaching affected area".

[Effect of electroacupuncture invention on activities of PGC-1α/Irisin (FNDC5)/BDNF signaling in cerebral cortex, hippocampus and muscles in focal cerebral ischemic/reperfusion injury rats].

OBJECTIVE: To observe the effect of electroacupuncture(EA) on the expression of peroxisome proliferator-activated receptor gamma coactivators-1-alpha (PGC-1α), Irisin and brain-derived neurotrophic factor (BDNF) in the ischemic peripheral cortex, hippocampus and local skeletal muscle in rats with focal cerebral ischemic/reperfusion injury (CI/RI), so as to explore its underlying mechanism of improving of CI/RI. METHODS: Male SD rats were randomly divided into 3 groups: sham-operation, model and EA (11 rats in each group). The focal CI/RI model was established by middle cerebral artery occlusion (MCAO). EA (2 Hz /15 Hz, 2 to 4 mA) was applied to "Quchi" (LI11) and "Zusanli" (ST36) of the affected side for 20 min, once a day for 7 days. Zea-Longa's score and Balance Beam score were used to evaluate the neurological and motor functions. The infarcted volume of the brain was detected by using 2,3,5-triphenyltetrazolium chloride staining. The expression levels of PGC-1α, fibronectin type III domain-containing protein 5(FNDC5) and BDNF proteins in the ischemic peripheral cortex, hippocampus and local skeletal muscle were detected by Western blot. RESULTS: Compared with the sham-operation group, the Zea-Longa's score, Balance Beam score, percentage of cerebral infarct volume were notably increased (P<0.01), while the expression levels of PGC-1α, FNDC5 and BDNF proteins in the cerebral cortex and hippocampus (not in the local muscle) were significantly down-regulated in the model group (P<0.01, P<0.05). In comparison with the model group, the increase of Zea-Longa's score, Balance Beam score, percentage of cerebral infarct volume, and the decrease of expression levels of PGC-1α, FNDC5 and BDNF proteins in the ischemic peripheral cortex and that of BDNF in the hippocampus were reversed in the EA group (P<0.01, P<0.05). No significant changes were found in the expression levels of hippocampal PGC-1α and FNDC5 proteins in the hippocampus and those of PGC-1α, FNDC5 and BDNF proteins in the local muscle after EA intervention (P>0.05). CONCLUSION: EA can improve neurological and motor functions and reduce cerebral infarction volume in CI/RI rats, which may be related to its functions in activating PGC-1α/Irisin(FNDC5)/BDNF pathway in the cerebral cortex.

Environmental enrichment combined with fasudil promotes motor function recovery and axonal regeneration after stroke.

Fasudil, a Rho-associated protein kinase (ROCK) inhibitor, has a protective effect on the central nervous system. In addition, environmental enrichment is a promising technique for inducing the recovery of motor impairments in ischemic stroke models. The present study aimed to explore whether environmental enrichment combined with fasudil can facilitate motor function recovery and induce cortical axonal regeneration after stroke. First, a mouse model of ischemic cerebral stroke was established by photochemical embolization of the left sensorimotor cortex. Fasudil solution (10 mg/kg per day) was injected intraperitoneally for 21 days after the photothrombotic stroke. An environmental enrichment intervention was performed on days 7-21 after the photothrombotic stroke. The results revealed that environmental enrichment combined with fasudil improved motor function, increased growth-associated protein 43 expression in the infarcted cerebral cortex, promoted axonal regeneration on the contralateral side, and downregulated ROCK, p-LIM domain kinase (LIMK)1, and p-cofilin expression. The combined intervention was superior to monotherapy. These findings suggest that environmental enrichment combined with fasudil treatment promotes motor recovery after stroke, at least partly by stimulating axonal regeneration. The underlying mechanism might involve ROCK/LIMK1/cofilin pathway regulation. This study was approved by the Institutional Animal Care and Use Committee of Fudan University, China (approval No. 20160858A232) on February 24, 2016.

[Professor YANG Jun's experience in treatment of refractory facial paralysis based on acupuncture manipulation].

To summarize professor YANG Jun's experience in treatment of refractory facial paralysis by different acupuncture manipulation. Professor YANG Jun believes that refractory facial paralysis has prolonged course, qi and blood deficiency and collaterals injury after a long illness, and it is difficult to obtain obvious curative effect with routine acupuncture. Aimed at the etiology, pathogenesis and characteristics of disease, professor YANG Jun adopts 3 kinds of acupuncture manipulations, such as "penetration needling with long needle" "pulling technique exert after needle stuck" "contralateral-balance needling on the healthy side", to relieve deviation.

Environmental enrichment combined with fasudil treatment inhibits neuronal death in the hippocampal CA1 region and ameliorates memory deficits.

Currently, no specific treatment exists to promote recovery from cognitive impairment after a stroke. Dysfunction of the actin cytoskeleton correlates well with poststroke cognitive declines, and its reorganization requires proper regulation of Rho-associated kinase (ROCK) proteins. Fasudil downregulates ROCK activation and protects neurons against cytoskeleton collapse in the acute phase after stroke. An enriched environment can reduce poststroke cognitive impairment. However, the efficacy of environmental enrichment combined with fasudil treatment remains poorly understood. A photothrombotic stroke model was established in 6-week-old male C57BL/6 mice. Twenty-four hours after modeling, these animals were intraperitoneally administered fasudil (10 mg/kg) once daily for 14 successive days and/or provided with environmental enrichment for 21 successive days. After exposure to environmental enrichment combined with fasudil treatment, the number of neurons in the hippocampal CA1 region increased significantly, the expression and proportion of p-cofilin in the hippocampus decreased, and the distribution of F-actin in the hippocampal CA1 region increased significantly. Furthermore, the performance of mouse stroke models in the tail suspension test and step-through passive avoidance test improved significantly. These findings suggest that environmental enrichment combined with fasudil treatment can ameliorate memory dysfunction through inhibition of the hippocampal ROCK/cofilin pathway, alteration of the dynamic distribution of F-actin, and inhibition of neuronal death in the hippocampal CA1 region. The efficacy of environmental enrichment combined with fasudil treatment was superior to that of fasudil treatment alone. This study was approved by the Animal Ethics Committee of Fudan University of China (approval No. 2019-Huashan Hospital JS-139) on February 20, 2019.

[Clinical observation on therapeutic effect of moxibustion on cognitive decline in type 2 diabetes mellitus].

OBJECTIVE: To observe the effect of moxibustion on cognitive function in patients with cognitive decline of type 2 diabetes mellitus (T2DM). METHODS: A total of 47 patients with cognitive decline of T2DM were randomized into an observation group (24 cases, 4 cases dropped off ) and a control group (23 cases, 3 cases dropped off ). Conventional hypoglycemic intervention was adopted in the control group. On the basis of the treatment in the control group, Huayu Tongluo moxibustion (moxibustion for removing stasis and clearing collaterals) was applied at Baihui (GV 20), Dazhui (GV 14), Shenting (GV 24), once every 2 days, 4 weeks were as one course, totally 3 courses were required. Before and after treatment, scores of auditory verbal learning test (AVLT), complex figure test (CFT), Montreal cognitive assessment (MoCA) and trail making test-A (TMT-A) were observed in the both groups, and the clinical effective rates were compared. RESULTS: After treatment, the scores of immediate memory and delayed memory of AVLT in the observation group were higher than those before treatment and those in the control group (P<0.05). After treatment, the scores of visual space and executive function, delayed memory, attention and orientation of MoCA in the observation group were higher than those before treatment and those in the control group (P<0.05). The effective rate was 85.0% (17/20) in the observation group, which was superior to 10.0% (2/20) in the control group (P<0.05). CONCLUSION: Huayu Tongluo moxibustion has a definite effect on cognitive decline of type 2 diabetes mellitus.

Differences in Post-ischemic Motor Recovery and Angiogenesis of MCAO Rats Following Electroacupuncture at Different Acupoints.

BACKGROUND: Electroacupuncture (EA) can promote nerve and vascular regeneration, confer neuroprotection, inhibit apoptosis and inflammatory reactions, reduce oxidative stress injury, regulate neurochemicals and inhibit the formation of brain oedema in cerebral ischemic. However, the precise site of EA stimulation in the treatment of cerebral ischemic is unclear. OBJECTIVE: In the present study, we investigated the effect of EA at the acupoints of different meridians in motor function recovery and the involvement of Vascular Endothelial Growth Factor (VEGF), phosphorylated Protein Kinase B (P-Akt), phosphorylated endothelial nitric oxide synthase (p-eNOS) and Platelet Endothelial Cell Adhesion Molecule-1(CD31) were examined in the peri-infarction cortex of rats. METHODS: The Middle cerebral artery occlusion (MCAO) model or sham surgery was performed in a total of Ninety male Sprague-Dawley rats. Rats were randomly divided into five groups: a sham group, a middle cerebral artery occlusion (MCAO) group, a Yang meridian group, a Yin meridian group and a combined Yang and Yin meridian group. EA stimulus was given during the middle cerebral artery occlusion. The neurobehavioural function was measured using Modified Neurological Severity Scores (mNSS), the rotarod test and the ladder rung walking test, and the protein expression of VEGF, P-Akt, p-eNOS in the peri-infarction cortex was detected by Western blot. Immunofluorescence was used to measure the vascular density of the peri-infarction cortex. RESULTS: EA at different meridian acupoints has no effect on the infarction volume, while EA at Yin meridian acupoints significantly promoted neurobehavioural functional recovery, increased the vascular density and enhanced protein kinase B/Endothelial nitric oxide synthase (Akt/eNOS) phosphorylation and VEGF expression. CONCLUSION: In the early stage of stroke, EA at Yin meridian acupoints can improve neurobehavioural functional recovery and the mechanism of this effect may be related to the enhanced expression of VEGF, P-Akt and p-eNOS in the peri-infarction cortex of rats.

An enriched environment increases the expression of fibronectin type III domain-containing protein 5 and brain-derived neurotrophic factor in the cerebral cortex of the ischemic mouse brain.

Many studies have shown that fibronectin type III domain-containing protein 5 (FDNC5) and brain-derived neurotrophic factor (BDNF) play vital roles in plasticity after brain injury. An enriched environment refers to an environment that provides animals with multi-sensory stimulation and movement opportunities. An enriched environment has been shown to promote the regeneration of nerve cells, synapses, and blood vessels in the animal brain after cerebral ischemia; however, the exact mechanisms have not been clarified. This study aimed to determine whether an enriched environment could improve neurobehavioral functions after the experimental inducement of cerebral ischemia and whether neurobehavioral outcomes were associated with the expression of FDNC5 and BDNF. This study established ischemic mouse models using permanent middle cerebral artery occlusion (pMCAO) on the left side. On postoperative day 1, the mice were randomly assigned to either enriched environment or standard housing condition groups. Mice in the standard housing condition group were housed and fed under standard conditions. Mice in the enriched environment group were housed in a large cage, containing various toys, and fed with a standard diet. Sham-operated mice received the same procedure, but without artery occlusion, and were housed and fed under standard conditions. On postoperative days 7 and 14, a beam-walking test was used to assess coordination, balance, and spatial learning. On postoperative days 16-20, a Morris water maze test was used to assess spatial learning and memory. On postoperative day 15, the expression levels of FDNC5 and BDNF proteins in the ipsilateral cerebral cortex were analyzed by western blot assay. The results showed that compared with the standard housing condition group, the motor balance and coordination functions (based on beam-walking test scores 7 and 14 days after operation), spatial learning abilities (based on the spatial learning scores from the Morris water maze test 16-19 days after operation), and memory abilities (based on the memory scores of the Morris water maze test 20 days after operation) of the enriched environment group improved significantly. In addition, the expression levels of FDNC5 and BDNF proteins in the ipsilateral cerebral cortex increased in the enriched environment group compared with those in the standard housing condition group. Furthermore, the Pearson correlation coefficient showed that neurobehavioral functions were positively associated with the expression levels of FDNC5 and BDNF (r = 0.587 and r = 0.840, respectively). These findings suggest that an enriched environment upregulates FDNC5 protein expression in the ipsilateral cerebral cortex after cerebral ischemia, which then activates BDNF protein expression, improving neurological function. BDNF protein expression was positively correlated with improved neurological function. The experimental protocols were approved by the Institutional Animal Care and Use Committee of Fudan University, China (approval Nos. 20160858A232, 20160860A234) on February 24, 2016.