Ginsenoside Rg1 injection combined with inosine tablets and vitamin B1 for the treatment of primary retinitis pigmentosa / 国际眼科杂志(Guoji Yanke Zazhi)

AIM: To investigate the effects of ginsenoside Rg1 injection combined with inosine tablets and vitamin B1 on serum brain-derived neurotrophic factor(BDNF), pituitary adenylate cyclase activating polypeptide(PACAP)and clinical efficacy in primary retinitis pigmentosa.METHODS: A total of 50 patients(100 eyes)with primary retinitis pigmentosa who admitted to the Department of Ophthalmology, the Second Affiliated Hospital of Hebei North University from August 2019 to March 2022 were selected as the research object. They were divided into the study group and the control group according to random number table, with 50 eyes in each group. Patients in the control group were treated with inosine tablets and vitamin B1, while patients in the study group were treated with ginsenoside Rg1 injection on the basis of the control group. The expression of BDNF and PACAP in serum, electroretinogram and spectral-domain optical coherence tomography(SD-OCT)were compared before and after treatment, and the retinal thickness(RT), mean deviation(MD), clinical efficacy and safety indexes were compared between the two groups.RESULTS: There were no differences in the MD of the two groups before treatment(t=1.670, P=0.098), while the MD of the study group was significantly lower than that of the control group after treatment(t=3.628, P<0.01). Before treatment, RT with a diameter of 1mm at the circle of macular fovea was compared between the two groups(t=0.108, P=0.914), it was significantly higher than that in the control group after treatment(t=6.125, P<0.01). Before treatment, there was no significant difference in the results of dark adaptation of electroretinogram between the two groups(all P>0.05). After treatment, the results of dark adaptation in the study group were significantly better than those in the control group(all P<0.01). Before treatment, there was no significant difference in the results of electroretinogram adaptation between the two groups(all P>0.05). After treatment, the results of electroretinogram adaptation in the study group were significantly better than those in the control group(all P<0.01). There was no significant difference in BDNF and PACAP between the two groups before treatment(all P>0.05). BDNF and PACAP in the study group were higher than those of the control group after treatment(all P<0.01). After treatment, no adverse reactions were observed in both groups.CONCLUSION: The treatment of patients with primary retinitis pigmentosa with ginsenoside will improve the retinal function and promote the prognosis of the disease by regulating the expression of BDNF and PACAP, and it is highly safe.

Validation of the Brazilian version of the child pain catastrophizing scale and its relationship with a marker of central sensitization

Abstract Objectives The Pain Catastrophizing Scale-Child version (PCS-C) allows to identify children who are prone to catastrophic thinking. We aimed to adapt the Brazilian version of PCS-C (BPCS-C) to examine scale psychometric properties and factorial structure in children with and without chronic pain. Also, we assessed its correlation with salivary levels of Brain-Derived Neurotrophic factor (BDNF). Methods The Brazilian version of PCS-C was modified to adjust it for 7-12 years old children. To assess psychometric properties, 100 children (44 with chronic pain from a tertiary hospital and 56 healthy children from a public school) answered the BPCS-C, the visual analogue pain scale, and questions about pain interference in daily activities. We also collected a salivary sample to measure BDNF. Results We observed good internal consistency (Cronbach's value = 0.81). Parallel analysis retained 2 factors. Confirmatory factor analysis of our 2-factor model revealed consistent goodness-of-fit (IFI = 0.946) when compared to other models. There was no correlation between visual analogue pain scale and the total BPCS-C score; however, there was an association between pain catastrophizing and difficulty in doing physical activities in school (p= 0.01). BPCS-C total scores were not different between groups. We found a marginal association with BPCS-C (r= 0.27, p= 0.01) and salivary BDNF levels. Discussion BPCS-C is a valid instrument with consistent psychometric properties. The revised 2-dimension proposed can be used for this population. Children catastrophism is well correlated with physical limitation, but the absence of BPCS-C score differences between groups highlights the necessity of a better understanding about catastrophic thinking in children.

Total Flavones of Spatholobi Caulis Regulate Hippocampal Neuroplasticity in Depressed Rats Through CREB/BDNF Pathway / 中国实验方剂学杂志

ObjectiveTo investigate the effect and mechanism of total flavones of Spatholobi Caulis （TFSC） against depression in rats. MethodThe fifty KM mice were randomly divided into the normal group and high-， medium-， and low-dose （1， 0.5， 0.25 g·kg-1） TFSC groups and gavaged with the corresponding drugs for 12 successive days. One hour after the last administration， the immobility time in forced swimming test and tail suspension test was recorded. The SD rats were randomly divided into the normal group， model group， fluoxetine （5 mg·kg-1） group， and high- and low-dose （1， 0.25 g·kg-1） TFSC groups. Following the exposure of rats to two different kinds of stimuli daily for inducing chronic unpredictable stress， they were administered with the corresponding drugs for 21 d. After the experiment， the levels of serum neurotransmitters and inflammatory factors in rats were detected by enzyme-linked immunosorbent assay （ELISA）. The changes in hippocampal neurons of rats were observed by hematoxylin-eosin （HE） and Nissl staining. The mRNA expression levels of nuclear factor-κB （NF-κB） and tumor necrosis factor-α （TNF-α） in the hippocampus of rats were detected by real-time fluorescence quantitative polymerase chain reaction （Real-time PCR）， and the protein expression levels of cAMP-response element binding protein （CREB）， phosphorylated CREB （p-CREB）， and brain-derived neurotrophic factor （BDNF） in hippocampal tissues by Western blot. ResultCompared with the normal group， TFSC significantly shortened the immobility time of mice in tail suspension and swimming tests （P<0.05）. Compared with the normal group， the model group exhibited reduced sucrose intake and wilderness activity （P<0.01）， decreased 5-HT， DA， NE （P<0.05， P<0.01）， MAO， IL-6， TNF-α （P<0.05， P<0.01）， damaged neurons， increased mRNA levels of TNF-α and NF-κB （P<0.01）， and down-regulated BDNF and CREB protein expression （P<0.05）. Compared with the model group， TFSC significantly enhanced sucrose intake and wilderness activity of rats （P<0.05）， increased the serum 5-HT， DA and NE （P<0.05， P<0.01）， and decreased the serum MAO， IL-6， and TNF-α （P<0.05， P<0.01） as well as NF-κB and TNF-α mRNA expression （P<0.01）， up-regulated the protein expression levels of BDNF and CREB （P<0.01）， and improved the pathological symptoms of hippocampus. ConclusionTFSC improved the hippocampal neurons of rats via CREB/BDNF signaling pathway and reduced depressive pathological damage， thus relieving depression.

Effect and Mechanism of Chaihu Jia Longgu Muli Tang on Hippocampus of Rats with Chronic Stress Depression Based on BDNF/TrkB/CREB Pathway / 中国实验方剂学杂志

Objective:To explore the effect of Chaihu Jia Longgu Muli Tang on the hippocampus of rats with chronic stress depression based on the brain-derived neurotrophic factor (BDNF)/tyrosine kinase B (TrkB)/cyclic adenosine phosphate response element-binding protein (CREB) pathway. Method:Sixty SD rats were divided into a blank group (<italic>n</italic>=10) and an experimental group (<italic>n</italic>=50) for the induction of the chronic stress depression model. The rats in the experimental group were further divided into the following five groups: a model group， a fluoxetine hydrochloride group (0.003 g·kg^-1), and low-(1.625 g·kg^-1), medium-(3.25 g·kg^-1), and high-dose (6.5 g·kg^-1) Chaihu Jia Longgu Muli Tang groups. The rats were administered correspondingly by gavage once a day for eight weeks. Behavioral tests were performed to evaluate the depression state of the rats before modeling， after modeling， and after drug administration. Hematoxylin-eosin (HE) staining was used to observe the morphological changes in the hippocampus of rats. The immunohistochemical (IHC) staining was used to quantitatively detect BDNF protein expression in the rat hippocampus. The mRNA and protein expression of BDNF， TrkB， and CREB in the rat hippocampus was detected by the real-time fluorescence-based quantitative PCR (Real-time PCR) and Western blot， respectively. Result:Compared with the blank group， the model group showed decreased sucrose preference rate (<italic>P</italic><0.05)， declining horizontal and vertical scores (<italic>P</italic><0.05)， and prolonged immobility time and floating time (<italic>P</italic><0.05). Additionally， HE staining results revealed that hippocampal neuron structure was damaged. IHC staining showed that the mRNA and protein expression of BDNF， TrkB， and CREB was significantly decreased (<italic>P</italic><0.05). Compared with the model group， the fluoxetine hydrochloride group and the Chaihu Jia Longgu Muli Tang groups displayed elevated sucrose preference rate (<italic>P</italic><0.05)， increased horizontal and vertical scores (<italic>P</italic><0.05)， and shortened immobility time and floating time (<italic>P</italic><0.05). Furthermore, the hippocampal neuron structure was significantly repaired. IHC staining showed that the mRNA and protein expression of BDNF， TrkB， and CREB was significantly increased (<italic>P</italic><0.05). Conclusion:Chaihu Jia Longgu Muli Tang can significantly improve the depression-like behaviors of rats after chronic stress stimulation and enhance the regeneration and repair of neurons in the hippocampus. The underlying mechanism may be related to the up-regulation of the BDNF/TrkB/CREB signaling pathway in the hippocampus of rats.

Clinical Observation of Suanzaoren Tang Combined with Fluoxetine in Treatment of Depression of Liver Stagnation and Blood Deficiency Accompanied by Insomnia / 中国实验方剂学杂志

Objective:To observe the clinical therapeutic effect of Suanzaoren Tang combined with fluoxetine in the treatment of patients with depression of liver stagnation and blood deficiency accompanied by insomnia. Method:The patients with depression of liver stagnation and blood deficiency accompanied by insomnia （120 cases） were randomly divided into an observation group and a control group， with 60 cases in each group. The patients in the observation group received Suanzaoren Tang combined with fluoxetine， and those in the control group received fluoxetine. The course of treatment was eight weeks. The clinical efficacy was evaluated with Hamilton Depression Rating Scale （HAMD）， Pittsburgh Sleep Quality Index（PSQI）， and Activities of Daily Living （ADL） score. Enzyme-linked immunosorbent assay （ELISA） was used to determine the plasma levels of 5-hydroxytryptamine （5-HT）， norepinephrine （NE），brain-derived neurotrophic factor （BDNF）， glial cell-derived neurotrophic factor （GDNF）， neuron-specific enolase （NSE）， and S100<italic>β</italic>. Result:After eight weeks of treatment， the scores of HAMD and PSQI were reduced（<italic>P</italic><0.01）， while the scores of ADL were elevated（<italic>P</italic><0.01），and the levels of 5-HT， NE， GDNF and BDNF were up-regulated （<italic>P</italic><0.01） in the plasma of patients in the observation group as compared with those before treatment. After treatment， compared with the control group， the observation group showed increased total effective rate（<italic>P</italic><0.01）， decreased scores of HAMD and PSQI （<italic>P</italic><0.01）， elevated score of ADL（<italic>P</italic><0.01）， up-regulated levels of 5-HT， NE， GDNF and BDNF in plasma， and declining NSE and S100<italic>β</italic>（<italic>P</italic><0.01）. Conclusion:Suanzaoren Tang combined with fluoxetine is superior to fluoxetine alone in treating the depression of liver stagnation and blood deficiency accompanied by insomnia. Its therapeutic effect is achieved by increasing the release of monoamine neurotransmitters and promoting the secretion of BDNF and GDNF in the brain.

Effect of Sinisan on BDNF/TrkB， 5-HT/5-HT1AR， and HPA axis in Depression Model Rats / 中国实验方剂学杂志

Objective:To observe the effect of Sinisan on the brain-derived neurotrophic factor （BDNF）/tyrosine kinase receptor B （TrKB）， 5-hydroxytryptamine （5-HT）/5-HT1A receptor （5-HT1AR）， and hypothalamus-pituitary-adrenal （HPA） axis in depressed rats， and explore the antidepressant mechanism of Sinisan based on BDNF/TrKB， 5-HT/5-HT1AR， and HPA axis. Method:A total of 120 male Wistar rats were randomly divided into a normal group， a model group， a fluoxetine （0.01 g·kg^-1） group， and low- （1.25 g·kg^-1）， medium- （2.5 g·kg^-1）， and high-dose （5 g·kg^-1） Sinisan groups， with 20 rats in each group. The depression model was induced by isolation combined with chronic unpredictable mild stimulation（CUMS） in rats except for those in the normal group for 21 days. Rats were then treated correspondingly once a day for 21 days by gavage. Those in the normal group and the model group received an equal volume of normal saline. During the intervention， the model rats were stimulated continuously. The depressive state of CUMS model rats was evaluated by sucrose preference test and open field test. Enzyme-linked immunosorbent assay （ELISA） was used to determine the levels of corticotropin-releasing hormone （CRH）， adrenocorticotropic hormone （ACTH）， and corticosterone （CORT） in the plasma and BDNF and 5-HT levels in the hippocampal homogenate. The mRNA expression of hippocampal TrKB， 5-HT1AR， glucocorticoid receptor （GR）， and mineralocorticoid receptor （MR） was detected by real-time fluorescence-based quantitative polymerase chain reaction （Real-time PCR）. The protein expression of hippocampal TrKB， 5-HT1AR， GR， and MR was detected by Western blot. The histomorphological changes of the hippocampus were observed by hematoxylin-eosin （HE） staining. Result:Compared with the normal group， the model group showed decreased sucrose preference rate （<italic>P</italic><0.01）， reduced horizontal and vertical scores in the open field test （<italic>P</italic><0.01）， increased plasma content of CRH， ACTH， and CORT （<italic>P</italic><0.01）， declining content of BDNF and 5-HT in the hippocampus （<italic>P</italic><0.01）， dwindled mRNA and protein expression levels of TrKB， 5-HT1AR， and GR （<italic>P</italic><0.01）， elevated mRNA and protein expression of MR （<italic>P</italic><0.01）， and damaged hippocampal neurons revealed by HE staining. Compared with the model group， the groups with drug intervention showed increased sucrose preference rate （<italic>P</italic><0.01） and horizontal and vertical scores in the open field test （<italic>P</italic><0.05， <italic>P</italic><0.01）， decreased content of plasma CRH， ACTH， and CORT （<italic>P</italic><0.05， <italic>P</italic><0.01）， elevated content of hippocampal BDNF and 5-HT （<italic>P</italic><0.05， <italic>P</italic><0.01）， elevated mRNA and protein expression levels of hippocampal TrKB， 5-HT1AR， and GR （<italic>P</italic><0.05， <italic>P</italic><0.01）， reduced mRNA and protein expression levels of hippocampal MR （<italic>P</italic><0.05， <italic>P</italic><0.01）， and recovered hippocampal neurons as revealed by HE staining. Conclusion:Sinisan can exert a significant antidepressant effect by increasing hippocampal BDNF and 5-HT content， up-regulating TrKB， 5-HT1AR， and GR mRNA and protein expression， down-regulating MR mRNA and protein expression， inhibiting HPA axis hypertrophy， and enhancing the regeneration and repair of hippocampal neurons.

Effect and Mechanism of Qixian Tongluo Prescription on Neural Function Recovery in Patients with Cerebral Infarction / 中国实验方剂学杂志

Objective:To investigate the effect of Qixian Tongluo prescription on neural function recovery in patients with cerebral infarction and its mechanism. Method:A total of 100 inpatients （January to June，2020）with cerebral infarction in the Neurology Department of Wenzhou Hospital of Traditional Chinese Medicine were assigned to an experimental group （<italic>n</italic>=50） and a control group （<italic>n</italic>=50） according to the random number table. Both groups received conventional treatment of western medicine，while the experimental group took additional Qixian Tongluo prescription. Treatment lasted for 12 weeks. The clinical efficacy，National Institutes of Health Stroke Scale （NIHSS） score， the modified Barthel index （MBI），Fugl-Meyer assessment （FMA） score， and levels of brain-derived neurotrophic factor（BDNF），vascular endothelial growth factor（VEGF）， and stromal cell-derived factor-1（SDF-1） in peripheral blood of the two groups before and after treatment were compared. Result:The total response rate in the experimental group was 84.00%（42/50），higher than 66.00%（33/50） in the control group （<italic>Z</italic>=-7.365，<italic>P</italic><0.05）. There was no significant difference in the scores of MBI，FMA， and NIHSS before treatment between the two groups. The MBI and FMA scores of the two groups increased （<italic>P</italic><0.01）， and the NIHSS scores decreased （<italic>P</italic><0.05， <italic>P</italic><0.01）. Compared with the control group after treatment， the experimental group showed increased MBI and FMA scores and decreased NIHSS score （<italic>P</italic><0.05）. There was no significant difference in BDNF level between the two groups before and after treatment. The VEGF and SDF-1 levels in the peripheral blood of the two groups were higher than those before treatment （<italic>P</italic><0.05）， and the experimental group was higher than the control group （<italic>P</italic><0.05）. Conclusion:Qixian Tongluo prescription can effectively improve the clinical efficacy，the quality of life， and the prognosis of patients with cerebral infarction during convalescence. The underlying mechanism is associated with the promotion of the expression of endogenous VEGF and SDF-1 in the peripheral blood to activate the SDF-1/chemokine receptor 4（CXCR4） signaling pathway， induce the recruitment and mobilization of endothelial progenitor cells， and facilitate the angiogenesis and repair of ischemic brain tissues.

Oral Probiotics Improves Aluminum-induced Hippocampal Inflammation in Mice / 中山大学学报(医学科学版)

@#【Objective】To investigate whether oral administration of probiotics could improve the aluminum-induced hippocampal inflammation in mice.【Methods】Twenty-four 8-week-old male C57BL/6 mice were randomly divided into 4 groups，6 in each. The mice in control（CON）group，AlCl3-treated（Al）group，probiotics-treated（PO）group and treatment-combined（Al+PO）group were treated with sterile water，oral AlCl3，probiotics in sterile water and a combination of oral AlCl3 and probiotics in sterile water ，respectively. After six weeks of treatment，immunofluorescence staining was used to test the numbers of activated microglia（Iba-1+/CD68+ cells） and the expression level of brain-derived neurotrophic factor（BDNF）in hippocampus；enzyme linked immunosorbent assay（ELISA）was employed to determine the levels of interleukin- 1 β（IL- 1 β） and tumor necrosis factor- α（TNF- α）in serum and hippocampus.【Results】 The morphology revealed that compared with those in CON group，in Al group，the numbers of Iba-1+/CD68+ cells increased significantly（P < 0.01）and the BDNF level decreased significantly（P < 0.01）. Compared those in Al group ， in Al+PO group ，the numbers of Iba-1+/CD68+ cells were significantly lower（P < 0.01）and the BDNF level significantly higher（P < 0.01）. ELISA results showed that compared with those in CON group，in Al group，the levels of IL-1β and TNF- α in serum and hippocampus had a significant rise（P < 0.01）. Compared those in Al group，in Al+PO group，the levels of IL- 1 β in serum and hippocampus and TNF-α in hippocampus had a significant reduction （P < 0.01）.【Conclusions】Oral probiotics improves the aluminum-induced hippocampal inflammation in mice.

Anti-depressant Mechanism of Qing' ewan in CUMS Rats Based on Estrogen Receptor Pathway / 中国实验方剂学杂志

Objective::To study the anti-depressive effect of Qing' ewan in treating chronic unpredictable mild stress (CUMS) in rats, and the regulatory effect on estrogen receptor and estrogen receptor-related signaling pathways, in order to explore its anti-depressive mechanism. Method::The CUMS model was established. The experiment was divided into normal control group, model group, escitalopram oxalate group (positive control) and Qing' ewan groups (1.71, 5.13, 15.39 g·kg-1). After 4 weeks of modeling, rats were treated with corresponding drugs for 2 weeks. Behavioral evaluation [sucrose preference test (SPT), forced swimming test (FST), open field test (OFT)] was conducted to assess if the CUMS model was successful. Western blot was used to analyze the protein expression levels of estrogen receptor α (ERα), estrogen receptor β (ERβ), brain-derived neurotrophic factor (BDNF) and tyrosine kinase receptor B (TrkB). Result::Compared with the normal group, the sucrose consumption rate and the score of OFT in the model group decreased(P<0.05, P<0.01), the immobility time of FST prolonged significantly(P<0.01), and the protein expression levels of ERα, ERβ, BDNF and TrkB decreased(P<0.05, P<0.01). Compared with the model group, the behavioral performance of the treated group was improved, the sucrose consumption rate and the score of OFT increased(P<0.05, P<0.01), and the immobility time decreased(P<0.05). The protein expressions of ERα, ERβ, BDNF and TrkB in the treated group were significantly up-regulated(P<0.05, P<0.01), especially the middle-dose Qing' ewan group (5.13 g·kg-1). Conclusion::Qing' ewan can improve depression-like behavior in CUMS rats. Its mechanism may be related to the neuroprotective effect by up-regulating the expressions of ERα and ERβ and activating estrogen receptor-mediated ERβ/BDNF/TrkB pathways.

Effect of Tianwang Buxin Pills on Behavior, HPA Axis, BDNF Expression and Phosphorylation of GSK3β in Mice with Chronic Unpredictable Stress / 中国实验方剂学杂志

Objective:To investigate the effect of Tianwang Buxin pills on behavior， hypothalamus pituitary adrenal axis （HPA axis）， hippocampal glycogen synthase kinase 3β （GSK3β） phosphorylation and brain-derived neurotrophic factor （BDNF） expression in mice with chronic unpredictable stress， and explore its mechanisms for antidepressant-like action. Method:Totally 60 male ICR mice were randomly divided into normal group， chronic stress model group， fluoxetine hydrochloride group （10 mg·kg-1） and Tianwang Buxin pills high， middle and low dose groups （3.6， 1.8， 0.9 g·kg-1）. The mice were subjected to the chronic unpredictable stress （CUS） protocol for a period of 28 d to induce depressive-like behavior. Then， a sucrose preference test， open-field test and novelty-suppressed feeding test were performed to detect the behavior changes. The blood， adrenal gland and hippocampus of mice were collected. The contents of adrenocorticotropic hormone （ACTH） and corticosterone （CORT） in serum were detected by enzyme-linked immunosorbent assay （ELISA）. The changes of GSK3β phosphorylation and BDNF expression in hippocampus were detected by Western blot， and the adrenal index was then calculated. Result:As compared with the normal group， the sucrose water preference was significantly decreased （P<0.01）， the number of opening activities was significantly reduced （P<0.05）， the feeding latency of novelty inhibition was prolonged （P<0.01）， the serum ACTH and CORT contents were significantly increased （P<0.05，P<0.01）， GSK3β phosphorylation and BDNF expression levels in hippocampus were significantly decreased （P<0.01）， and adrenal index was significantly increased in model group （P<0.01）. As compared with the model group， Tianwang Buxin pills treatment significantly reversed the CUS-induced behavioral abnormalities in depression model mice （P<0.05， P<0.01）， significantly decreased the levels of plasma ACTH and CORT （P<0.01） and adrenal and adrenal gland index （P<0.01）， while increased GSK3β phosphorylation and BDNF expression in hippocampus （P<0.05， P<0.01）， with its effect similar to that of fluoxetine hydrochloride. Conclusion:Tianwang Buxin pills produced antidepressant-like effects in chronic unpredictable stress mice， and its mechanism may be associated with inhibiting HPA axis activity and up-regulating GSK3β phosphorylation and BDNF protein expression in hippocampus.

Study on Protective Effect of Huayu Qutan Decoction on Vascular Dementia / 中国实验方剂学杂志

Objective: To study the protective effect of Huayu Qutan decoction on vascular dementia (VD) gerbils and to explore whether its mechanism is related to Calcium ion-calmodulin-dependent protein kinase Ⅱ (CaMKⅡ)/cyclic adenosine effect element binding protein (CREB)/brain-derived neurotrophic factor (BDNF) signaling pathway. Method: Forty healthy gerbils were randomly divided into sham operation group, model group, low, medium and high dose groups (5.35, 10.7, 21.4 g·kg-1) of removing blood stasis and expelling phlegm. Eight gerbils in each group were divided into model group and removing blood stasis and expelling phlegm group. Gerbils were given corresponding drugs twice a day after operation. Water maze experiment was conducted 21 days later to investigate the spatial learning and memory ability of gerbils. The expression of p-CaMKⅡ/CaMKⅡ, p-CREB/CREB and BDNF in the hippocampus of gerbils were detected by Western blot and immunohistochemistry. Result: Compared with sham operation group, the incubation period and the number of platform trips of gerbil in the model group were significantly reduced, p-CaMKⅡ/CaMKⅡ, p-CREB/CREB, and BDNF protein expression were significantly reduced (PPPConclusion: Huayu Qutan decoction improves the learning and memory abilities of gerbils with vascular dementia, and its mechanism may be related to the activation of CaMKⅡ/CREB/BDNF signaling pathway.

Expression and function of lncRNA BDNF-AS in breast cancer / 中国肿瘤临床

Objective: To determine expression of brain-derived neurotrophic factor antisense (BDNF-AS) long non-coding RNA (ln-cRNA) in breast cancer, and to investigate its effects on proliferation, apoptosis, migration and invasion. Methods: Between 2016 and 2018, samples from 88 cases of breast cancer were collected at the First Hospital of Lanzhou University. RT-qPCR was used to deter-mine expression of lncRNA BDNF-AS in breast cancer tissue and cells. A pcDNA3.1 plasmid was used to overexpress BDNF-AS in MDA-MB-231 cells. Cell viability was quantified using an MTT assay, proliferative capacity was determined using an EdU assay and a colori-metric assay was used to measure the Caspase-3 activity. Moreover, the protein levels of Bax, Bcl-2, MMP-9, E-cadherin, and BDNF were quantified by Western blot. Scratch and transwell assays were used to determine cell migration and invasion. Results: Lower ln-cRNA BDNF-AS expression was observed in breast cancer tissue and cells compared with normal paracancerous tissues (P<0.05), and with normal, HBL-100 breast cells (P<0.01). BDNF-AS expression negatively correlated with tumor-node-metastasis (TNM) stage (P<0.05) and lymphatic metastasis (P<0.05) of breast cancer. Overexpression of BDNF-AS with the pcDNA3.1 plasmid decreased viability of MDA-MB-231 cells (P<0.01), EdU-positive cells (P<0.01), and Caspase-3 activity (P<0.01). Additionally, Bcl-2, MMP-9, and BDNF ex-pression was downregulated (P<0.01), while Bax and E-cadherin expression was upregulated (P<0.01). Overexpression of BDNF-AS al-so inhibited cell healing and invasion which were determined by scratch assays (P<0.01). Conclusions: LncRNA BDNF-AS expression is downregulated in breast cancer, which inhibits breast cancer cell proliferation, migration, invasion, and promotes apoptosis.

Effect of electrical stimulation at auricular points combined with sound masking on the expression of CREB, BDNF and TrkB in the auditory cortex of tinnitus rats / 中国针灸

OBJECTIVE@#To explore the effect of electrical stimulation at auricular points (EAS) combined with sound masking on the expression of cAMP-response element binding protein (CREB), brain-derived neurotrophic factor (BDNF) and tyrosine receptor kinase B (TrkB) in the auditory cortex of tinnitus rats.@*METHODS@#A total of 27 adult male SD rats were randomly divided into a control group, a model group and an EAS group. The rats in the model group and the EAS group were intervened with intraperitoneal injection of sodium salicylate to induce tinnitus model, while the rats in the control group were intervened with injection of 0.9% NaCl solution. After the model was successfully established, the rats in the EAS group were treated with electrical stimulation at "Shenmen" (TF) and "Yidan" (CO), combined with sound masking; the treatment was given once a day for 15 days. The gap prepulse inhibition of acoustic startle (GPIAS) and prepulse inhibition (PPI) testing were performed using the acoustic startle reflex starter package for rats. The expression of BDNF, TrkB, CREB and p-CREB in the auditory cortex of each group were measured with Western Blot analysis.@*RESULTS@#① Compared with the control group, the GPIAS values in 12 kHz, 16 kHz, 20 kHz and 28 kHz were significantly decreased in the model group (all 0.05).@*CONCLUSION@#EAS could improve the GPIAS values of high-frequency background sound in tinnitus rats, which may be related with the upregulation of the BDNF/TrkB/CREB signaling pathway in the auditory cortex, leading to the reversion of the maladaptive plasticity.

Regulation on brain-derived neurotrophic factor and relevant mechanism of anemarrhena saponin in H2O2-induced SH-SY5Y cells / 上海交通大学学报（医学版）

Objective • To investigate the effect of anemarrhena saponin (ZMS) on mRNA level of brain-derived neurotrophic factor (BDNF) and relevant mechanism in oxidative stress damage of SH-SY5Y cells. Methods • SH-SY5Y cells treated with H2O2 were chosen as cell models of oxidative stress. Cell viability was determined using cell counting kit-8 (CCK-8). The mRNA levels of BDNF and its important transcripts were detected by quantitative real-time PCR (qPCR). The histone deacetylases (HDACs) activity fluorescence quantification assay kit was used to measure the effect of ZMS on HDACs activity. Western blotting was used to detect the protein expression levels of acetylated histone H3, acetylated histone H4, specific acetylation site-related proteins, and HDAC1/2/3. Results • qPCR showed that ZMS could increase the mRNA levels of BDNF and its transcript in the cell models. Western blotting showed that ZMS pretreatment could increase the protein levels of acetylated histone H3, acetylated histone H4 and acetylated histone H3K14, and there was no significant effect on protein levels of HDAC1/2/3. In addition, HDACs activity fluorescence quantification assay kit showed that ZMS could inhibit HDACs activity significantly. Conclusion • ZMS can increase the mRNA levels of BDNF and its transcript in oxidative stress damage cell models, which may be related to the regulation of histone acetylation level

Effect of Danshen injection on expression of brain-derived neurotrophic factor and insulin-like growth factor-1 in rats with spinal cord injury / 上海交通大学学报（医学版）

Objective: To explore the mechanism of Danshen injection on promoting spinal cord functional recovery by observing the expression of brain-derived neurotrophic factor (BDNF) and insulin-like growth factor-1 (IGF-1) in rats with spinal cord injury (SCI). Methods: Thirty SD rats were divided randomly into normal control group, model group and treatment group (n=10). The rats in model group and treatment group were subjected to weight-drop SCI according to the Allens' method, and administered normal saline and Danshen injection, at the dosage of 1 mL/kg once a day, by intraperitoneal injection respectively for 14 days. The combine behavioral score (CBS) of rats in all groups was detected on 1, 3, 7 and 14 days after SCI, the expression of BDNF and IGF-1 in all groups was detected with immunohistochemical method and Western blotting. Results: Compared with the normal control group, the CBS in model group and treatment group was elevated after SCI, and declined gradually with the lapse of injury time in different rates. Until 14 days after SCI, compared with the model group, the CBS in treatment group was lower (P=0.000), and the expression levels of BDNF and IGF-1 (including immunohistochemistry positive cell number and relative content) in treatment group were both elevated significantly (all P<0.05). Conclusion: Danshen injection can promote the recovery of nerve function by elevating the expression of BDNF and IGF-1 after SCI.

Effect of Danshen injection on expression of brain-derived neurotrophic factor and insulin-like growth factor-1 in rats with spinal cord injury / 上海交通大学学报（医学版）

Objective·To explore the mechanism of Danshen injection on promoting spinal cord functional recovery by observing the expression of brain-derived neurotrophic factor (BDNF) and insulin-like growth factor-1 (IGF-1) in rats with spinal cord injury (SCI). Methods·Thirty SD rats were divided randomly into normal control group, model group and treatment group (n=10). The rats in model group and treatment group were subjected to weight-drop SCI according to the Allens' method, and administered normal saline and Danshen injection, at the dosage of 1 mL/kg once a day , by intraperitoneal injection respectively for 14 days. The combine behavioral score (CBS) of rats in all groups was detected on 1, 3, 7 and 14 days after SCI, the expression of BDNF and IGF-1 in all groups was detected with immunohistochemical method and Western blotting. Results·Compared with the normal control group, the CBS in model group and treatment group was elevated after SCI, and declined gradually with the lapse of injury time in different rates. Until 14 days after SCI, compared with the model group, the CBS in treatment group was lower (P=0.000), and the expression levels of BDNF and IGF-1 (including immunohistochemistry positive cell number and relative content) in treatment group were both elevated significantly (all P<0.05). Conclusion·Danshen injection can promote the recovery of nerve function by elevating the expression of BDNF and IGF-1 after SCI.

Effects of electroacupuncture at "Changqiang" (GV 1) on expression of nerve growth factor and brain derived neurotrophic factor in rats after acute spinal cord injury / 中国针灸

<p><b>OBJECTIVE</b>To observe the effects of electroacupuncture (EA) at"Changqiang"(GV 1) on expression of nerve growth factor (NGF) and brain derived neurotrophic factor (BDNF) in rats after acute spinal cord injury (ASCI), and to explore the mechanism of EA at"Changqiang"(GV 1) on ASCI.</p><p><b>METHODS</b>Twenty-four adult female SD rats were randomly divided into an EA group, a model group and a sham operation group, 8 rats in each one. The rats in the sham operation group were treated with laminectomy to expose the spinal cord without any strike. The rats in the model group and EA group were treated with modified Allen's method to establish ASCI model. After model was established, the rats in the EA group were treated with EA at"Changqiang"(GV 1), once a day for continuous 7 days. The rats in the sham operation group and model group were treated with immobilization, once a day, without any other interventions. The basso beattie bresnahan (BBB) was evaluated 1, 3, 5, 7 days after operation. 7 days after operation, the rats were sacrificed with perfusion and the spinal cord was embedded with paraffin. The morphological changes of spinal cord and neuron were observed by Nissl's staining method; the expressions of NGF and BDNF were detected by immune fluorescence method.</p><p><b>RESULTS</b>3 days, 5 days and 7 days after operation, the BBB scores in the EA group were higher than those in the model group (<0.05, <0.01). The Nissl's staining indicated the gray matter of spinal cord was butterfly-shaped with complete structure and clear boundaries between the gray and white matter; the tabby-shaped Nissl bodies were observed in cytoplasm. There were incomplete gray nucleus, big and saturate local stasis plaque. Compared with the model group, the smallerarea of blood stasis, less severity of neuron edema, better morphology of neuron and no vacuole change were observed in the EA group. The immune fluorescence results indicated the expressions of NGF and BDNF in the model group and EA group were higher than those in the sham operation group (all <0.01); the expressions of NGF and BDNF in the EA group were higher than those in the model group (both <0.01).</p><p><b>CONCLUSION</b>EA at"Changqiang"(GV 1) could improve the expression of NGF and BDNF and increase the score of BBB in rats with ASCI, which is beneficial to the repair of ASCI.</p>

Effects of Kaixin Jieyu Pills on monoamines and BDNF in rats with vascular depression / 中成药

AIM To aim at investigating the function of Kaixin Jieyu Pills (Ginseng Radix et Rhizoma,Bupleuri Radix,Morindae officinalis Radix,etc.) to vascular depression and their mechanism of action.METHODS A vascular depression model of rat was established by chronic unpredictable mild stress and separation after ligation of the bilateral common carotid arteries.The rats were treated with Kaixin Jieyu Pills and fluoxetine hydrochloride (FLU) for 28 days,respectively.The sucrose preference test and open-field test were performed.Cerebral perfusion was investigated with a Perfusion Speckle Imager.The monoamines including serotonin,dopamine and noradrenaline,and brain-derived neurotrophic factor (BDNF) were determined with ELISA and Western bolt,respectively.RESULTS Kaixin Jieyu Pills significantly increased sucrose preference,moving distance and cortical blood flow.Kaixin Jieyu Pills could upregulate,to different extents,the expressions of monoamines,including serotonin,noradrenaline and dopamine,and BDNF.Kaixin Jieyu Pills had a function similar to FLU in behavior,upregulating monoamines and BDNF,but it is superior to FLU in cortical blood flow.CONCLUSION Kaixin Jieyu Pills has the advantage of reducing the depression-like behavior and improving cerebral hypoperfusion,which might be mediated by the upregulation of the serotonin,noradrenaline and BDNF.

Preventive Effect of Caffeine on Alzheimer's Disease / 现代生物医学进展

Objective:To explore the effects of caffeine on the prevention of Alzheimer's disease (AD).Methods:Use Ethanol as a solvent to extract the caffeine in tea and then injecting 5％ D-galactose saline solution 1ml/d/kg to establish aging model mice.Divide mice randomly into experimental group (high-dose/low-dosecaffeine),positive control group,negative control group,and normal con-trol group (NS) and injecting appropriate drugs for consecutive four weeks.Test superoxyde dismutase (SOD) and malondialdehvde (MDA) periodically.Take mice's hippocampus and use Western blotting to detect the expression of brain derived neurotrophic factor (BDNF) and extracellular signal-regulated kinasesl/2 (p-ERK1/2).Results:The expression of BDNF and p-ERK1/2,negative control group is less than low-dose experimental group and positive control group (P＜0.01);The p-ERK1/2 expression of injecting D-galactose mice was significantly lower than normal group,negative control group compared weth the normal group,the differencd was significant (P＜0.05).The level of SOD in model group was significantly lower than that in normal control group,high,low dose caffeine group and positive control group (P＜0.01),but the level of MDA is opposite.Conclusions:Caffeine can delay aging process by increasing the level of SOD in aging mice,and enhancing the expression of BDNF and P-ERK1/2.Caffeine does a lot to prevent AD.

Effects of electroacupuncture on activation of microglia cells in spinal cord in rats with neuropathic pain / 中国针灸

<p><b>OBJECTIVE</b>To observe the effects of electroacupuncture (EA) on the activation of microglia cells in the Lto Lspinal cord in rats with neuropathic pain, so as to investigate whether EA could inhibit the activation of spinal microglial cells and regulate the expression of brain-derived neurotrophic factor (BDNF) to achieve the analgesic effect.</p><p><b>METHODS</b>Forty male Sprague Dawley rats were randomly divided into a normal group, a sham-model group, a model group and an EA group, 10 rats in each one. The rats in the normal group received no treatment; the rats in sham-model group were treated with operation to exposure sciatic nerve for 2 to 3 min (no knot); the rats in the remaining groups were treated with model establishment of chronic constrictive injury (CCI). 7 days after model establishment, the rats in the EA group were treated with EA at "Zusanli" (ST 36) and "Yanglingquan" (GB 34), 30 min per time, once a day for consecutive 7 days. Only immobilization was used in the remaining groups the mechanical withdrawal threshold (MWT) and thermal withdrawal latency (TWL) of affected side feet were respectively measured before model establishment and 3 days, 5 days, 7 days, 10 days, 12 days and 14 days after model establishment; 14 days after model establishment, rats were sacrificed; the immunohistochemical method was used to measure the expression of Iba1 and BDNF in the sample of Lto Lspinal cord; real-time fluorescent quantitative PCR was used to measure the expression BDNF mRNA.</p><p><b>RESULTS</b>Compared with the sham-model group, the pain threshold was decreased significantly in the model group (<0.05), leading to hyperpathia. After EA treatment, compared with the model group, the pain threshold was increased significantly in the EA group (<0.05). 14 days after operation, the microglia cells in the Lto Lspinal cord, expression of BDNF and level of mRNA in the model group were significantly higher than those in the normal group and sham-model group (all<0.01); those in the EA group were significantly lower than those in the model group (all<0.01).</p><p><b>CONCLUSIONS</b>The analgesic effect on neuropathic pain is likely to be achieved by EA through inhibiting the activation of spinal microglia cells and down-regulating the expression of BDNF.</p>