1.Theta Oscillations Support Prefrontal-hippocampal Interactions in Sequential Working Memory.
Minghong SU ; Kejia HU ; Wei LIU ; Yunhao WU ; Tao WANG ; Chunyan CAO ; Bomin SUN ; Shikun ZHAN ; Zheng YE
Neuroscience Bulletin 2024;40(2):147-156
The prefrontal cortex and hippocampus may support sequential working memory beyond episodic memory and spatial navigation. This stereoelectroencephalography (SEEG) study investigated how the dorsolateral prefrontal cortex (DLPFC) interacts with the hippocampus in the online processing of sequential information. Twenty patients with epilepsy (eight women, age 27.6 ± 8.2 years) completed a line ordering task with SEEG recordings over the DLPFC and the hippocampus. Participants showed longer thinking times and more recall errors when asked to arrange random lines clockwise (random trials) than to maintain ordered lines (ordered trials) before recalling the orientation of a particular line. First, the ordering-related increase in thinking time and recall error was associated with a transient theta power increase in the hippocampus and a sustained theta power increase in the DLPFC (3-10 Hz). In particular, the hippocampal theta power increase correlated with the memory precision of line orientation. Second, theta phase coherences between the DLPFC and hippocampus were enhanced for ordering, especially for more precisely memorized lines. Third, the theta band DLPFC → hippocampus influence was selectively enhanced for ordering, especially for more precisely memorized lines. This study suggests that theta oscillations may support DLPFC-hippocampal interactions in the online processing of sequential information.
Adult
;
Female
;
Humans
;
Young Adult
;
Epilepsy
;
Hippocampus
;
Memory, Short-Term
;
Mental Recall
;
Prefrontal Cortex
;
Theta Rhythm
;
Male
2.Preclinical and early clinical studies of a novel compound SYHA1813 that efficiently crosses the blood-brain barrier and exhibits potent activity against glioblastoma.
Yingqiang LIU ; Zhengsheng ZHAN ; Zhuang KANG ; Mengyuan LI ; Yongcong LV ; Shenglan LI ; Linjiang TONG ; Fang FENG ; Yan LI ; Mengge ZHANG ; Yaping XUE ; Yi CHEN ; Tao ZHANG ; Peiran SONG ; Yi SU ; Yanyan SHEN ; Yiming SUN ; Xinying YANG ; Yi CHEN ; Shanyan YAO ; Hanyu YANG ; Caixia WANG ; Meiyu GENG ; Wenbin LI ; Wenhu DUAN ; Hua XIE ; Jian DING
Acta Pharmaceutica Sinica B 2023;13(12):4748-4764
Glioblastoma (GBM) is the most common and aggressive malignant brain tumor in adults and is poorly controlled. Previous studies have shown that both macrophages and angiogenesis play significant roles in GBM progression, and co-targeting of CSF1R and VEGFR is likely to be an effective strategy for GBM treatment. Therefore, this study developed a novel and selective inhibitor of CSF1R and VEGFR, SYHA1813, possessing potent antitumor activity against GBM. SYHA1813 inhibited VEGFR and CSF1R kinase activities with high potency and selectivity and thus blocked the cell viability of HUVECs and macrophages and exhibited anti-angiogenetic effects both in vitro and in vivo. SYHA1813 also displayed potent in vivo antitumor activity against GBM in immune-competent and immune-deficient mouse models, including temozolomide (TMZ) insensitive tumors. Notably, SYHA1813 could penetrate the blood-brain barrier (BBB) and prolong the survival time of mice bearing intracranial GBM xenografts. Moreover, SYHA1813 treatment resulted in a synergistic antitumor efficacy in combination with the PD-1 antibody. As a clinical proof of concept, SYHA1813 achieved confirmed responses in patients with recurrent GBM in an ongoing first-in-human phase I trial. The data of this study support the rationale for an ongoing phase I clinical study (ChiCTR2100045380).
3.Mechanism of Weiwei Tongtiao Decoction Against Chronic Atrophic Gastritis in Rats: Based on NF-κB Signaling Pathway
Shaowei YOU ; Xu YI ; Qi ZHAO ; Wensu WANG ; Ling YANG ; Diancheng HE ; Pingzhen TONG ; Xueyong WANG ; Yamei ZHAN
Chinese Journal of Experimental Traditional Medical Formulae 2023;29(2):88-97
ObjectiveTo explore the effect of Weiwei Tongtiao decoction (WTD) on chronic atrophic gastritis (CAG) rats and the underlying mechanism. MethodA total of 90 SD rats were randomized into normal control group, model group, high-dose, medium-dose, and low-dose WTD groups (18, 9, 4.5 g·kg-1·d-1 WTD, respectively, ig), and weifuchun control group (0.45 g·kg-1·d-1 weifuchun aqueous solution, ig), with 15 rats in each group. The N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) was employed to induced CAG in rats. After the modeling (identified by histopathological examination), the administration began and lasted 12 weeks. Then, gastric mucosa tissues of the rats were collected and stained with hematoxylin and eosin (HE), and the pathological changes of gastric mucosa were observed under the optical microscope. Real-time PCR, immunohistochemistry (IHC), and Western blotting were applied to examine the mRNA and protein expression of indexes in nuclear factor kappa-B (NF-κB) signaling pathway in the gastric mucosa of rats. ResultCAG rats showed irregular arrangement and morphology of the inherent glands in gastric mucosa and the glands decreased or disappeared. In addition, inflammatory cell infiltration was observed in the lamina propria of CAG rats, and about 48.4% presented intestinal metaplasia. WTD significantly alleviated the reduction of the glands and intestinal metaplasia in a dose-dependent manner. Compared with the normal control group, the model group demonstrated increase in the mRNA expression of cyclooxygenase-2 (COX-2), NF-κB p65, interleukin (IL)-1α, IL-1β, IL-10, IL-8α, and IL-8β, and protein expression of COX-2, NF-κB p65, and IL-10 (P<0.01). WTD and weifuchun lowered the mRNA expression of COX-2, NF-κB p65, IL-1α, IL-1β, IL-10, IL-8α, and IL-8β, and the protein expression of COX-2, NF-κB p65, and IL-10 in gastric mucosa of CAG rats (P<0.01). The expression of the above indexes after the intervention with high-dose WTD was close to that of the normal control group. ConclusionWTD can improve or even reverse the diseased gastric mucosa of CAG rats, and the mechanism is the likelihood that WTD down-regulates the mRNA and protein expression of the indexes in NF-κB signaling pathway in gastric mucosa of CAG rats.
4.Chemical constituents in Dolomiaea plants and their pharmacological activities: a review.
Yan-Hui LYU ; Wei CHEN ; Yan-Ping WEI ; Xin-Tong WEI ; Jie WANG ; Qian-Qian DING ; Zhan-Hong LI ; Ji-Xiang HE ; Xian-Peng ZU
China Journal of Chinese Materia Medica 2023;48(6):1463-1482
Dolomiaea plants are perennial herbs in the Asteraceae family with a long medicinal history. They are rich in chemical constituents, mainly including sesquiterpenes, phenylpropanoids, triterpenes, and steroids. The extracts and chemical constituents of Dolomiaea plants have various pharmacological effects, such as anti-inflammatory, antibacterial, antitumor, anti-gastric ulcer, hepatoprotective and choleretic effects. However, there are few reports on Dolomiaea plants. This study systematically reviewed the research progress on the chemical constituents and pharmacological effects of Dolomiaea plants to provide references for the further development and research of Dolomiaea plants.
Plant Extracts/pharmacology*
;
Asteraceae
;
Triterpenes
;
Sesquiterpenes/pharmacology*
;
Anti-Inflammatory Agents
;
Phytochemicals/pharmacology*
5.Systematic review and Meta-analysis of Gusongbao preparation in treatment of primary osteoporosis.
Jie-Hang LU ; Zheng-Yan LI ; Guo-Qing DU ; Jun ZHANG ; Yu-Peng WANG ; Jin-Yu SHI ; You-Zhi LIAN ; Fu-Wei PAN ; Zhen-Lin ZHANG ; Hong-Sheng ZHAN
China Journal of Chinese Materia Medica 2023;48(11):3086-3096
This study aims to provide evidence for clinical practice by systematically reviewing the efficacy and safety of Gusongbao preparation in the treatment of primary osteoporosis(POP). The relevant papers were retrieved from four Chinese academic journal databases and four English academic journal databases(from inception to May 31, 2022). The randomized controlled trial(RCT) of Gusongbao preparation in the treatment of POP was included after screening according to the inclusion and exclusion criteria. The quality of articles was evaluated using risk assessment tools, and the extracted data were subjected to Meta-analysis in RevMan 5.3. A total of 657 articles were retrieved, in which 15 articles were included in this study, which involved 16 RCTs. A total of 3 292 patients(1 071 in the observation group and 2 221 in the control group) were included in this study. In the treatment of POP, Gusongbao preparation+conventional treatment was superior to conventional treatment alone in terms of increasing lumbar spine(L2-L4) bone mineral density(MD=0.03, 95%CI[0.02, 0.04], P<0.000 01) and femoral neck bone mineral density, reducing low back pain(MD=-1.69, 95%CI[-2.46,-0.92], P<0.000 1) and improving clinical efficacy(RR=1.36, 95%CI[1.21, 1.53], P<0.000 01). Gusongbao preparation was comparable to similar Chinese patent medicines in terms of improving clinical efficacy(RR=0.95, 95%CI[0.86, 1.04], P=0.23). Gusongbao preparation was inferior to similar Chinese patent medicines in reducing traditional Chinese medicine syndrome scores(MD=1.08, 95%CI[0.44, 1.71], P=0.000 9) and improving Chinese medicine syndrome efficacy(RR=0.89, 95%CI[0.83, 0.95], P=0.000 4). The incidence of adverse reactions of Gusongbao preparation alone or combined with conventio-nal treatment was comparable to that of similar Chinese patent medicines(RR=0.98, 95%CI[0.57, 1.69], P=0.94) or conventio-nal treatment(RR=0.73, 95%CI[0.38, 1.42], P=0.35), and the adverse reactions were mainly gastrointestinal discomforts. According to the available data, Gusongbao preparation combined with conventional treatment is more effective than conventional treatment alone in increasing lumbar spine(L2-L4) bone mineral density and femoral neck bone mineral density, reducing low back pain, and improving clinical efficacy. The adverse reactions of Gusongbao preparation were mainly gastrointestinal discomforts, which were mild.
Humans
;
Bone Density
;
Low Back Pain
;
Medicine, Chinese Traditional
;
Osteoporosis/drug therapy*
6.Composite Sophora Colon-Soluble Capsule Ameliorates DSS-Induced Ulcerative Colitis in Mice via Gut Microbiota-Derived Butyric Acid and NCR+ ILC3.
Ming-Jun CHEN ; Yang FENG ; Lu GAO ; Ming-Xiong LIN ; Shi-da WANG ; Zhan-Qi TONG
Chinese journal of integrative medicine 2023;29(5):424-433
OBJECTIVE:
To investigate the effects of composite Sophora colon-soluble Capsule (CSCC) on gut microbiota-mediated short-chain fatty acids (SCFAs) production and downstream group 3 innate lymphoid cells (ILC3s) of dextran sulfate sodium (DSS)-induced ulcerative colitis (UC) mice model.
METHODS:
The main components of CSCC were analyzed by hybrid ultra-high-performance liquid chromatography ion mobility spectromety quadrupole time-of-flight mass spectrometry (UHPLC-IM-QTOF/MS). Twenty-four male BALB/c mice were randomly divided into 4 groups (n=6) by using a computer algorithm-generated random digital, including control, DSS model, mesalazine, and CSCC groups. A DSS-induced colitis mice model was established to determine the effects of CSCC by recording colonic weight, colonic length, index of colonic weight, and histological colonic score. The variations in ILC3s were assessed by immunofluorescence and flow cytometry. The results of gut microbiota and SCFAs were acquired by 16s rDNA and gas chromatography-mass spectrometry (GC-MS) analysis. The expression levels of NCR+ ILC3-, CCR6+ Nkp46- (Lti) ILC3-, and ILCreg-specific markers were detected by enzyme-linked immunosorbent assay, and real-time quantitative polymerase chain reaction and Western blot, respectively.
RESULTS:
The main components of CSCC were matrine, ammothamnine, Sophora flavescens neoalcohol J, and Sophora oxytol U. After 7 days of treatment, CSCC significantly alleviated colitis by promoting the reproduction of intestinal probiotics manifested as upregulation of the abundance of Bacteroidetes species and specifically the Bacteroidales_S24-7 genus (P<0.05). Among the SCFAs, the content of butyric acid increased the most after CSCC treatment. Meanwhile, compared with the model group, Lti ILC3s and its biomarkers were significantly downregulated and NCR+ ILC3s were significantly elevated in the CSCC group (P<0.01). Further experiments revealed that ILC3s were differentiated from Lti ILC3s to NCR+ ILC3s, resulting in interleukin-22 production which regulates gut epithelial barrier function.
CONCLUSION
CSCC may exert a therapeutic effect on UC by improving the gut microbiota, promoting metabolite butyric acid production, and managing the ratio between NCR+ ILC3s and Lti ILC3s.
Male
;
Animals
;
Mice
;
Colitis, Ulcerative/pathology*
;
Immunity, Innate
;
Butyric Acid/therapeutic use*
;
Sophora
;
Gastrointestinal Microbiome
;
Lymphocytes
;
Colon
;
Colitis/pathology*
;
Disease Models, Animal
;
Mice, Inbred C57BL
7.Kinematic and Dynamic Study on Traditional Chinese Cervical Manipulation
Meiping TONG ; Huihao WANG ; Hongsheng ZHAN ; Fuwei PAN ; Yisong WANG ; Yupeng WANG
Journal of Medical Biomechanics 2023;38(1):E065-E070
Objective To simultaneously collect and analyze the kinematic and dynamic parameters for two techniques of traditional Chinese cervical manipulation ( TCCM), and quantitatively describe its biomechanical characteristics. Methods A senior practitioner completed the TCCM (positioning and directional rotation pulling, lateral flexion, respectively) on 10 healthy subjects, and the fluorescent marker balls were pasted on the operator to capture manipulation movements. The dynamic parameters and the surface electromyography ( sEMG) signals were collected by pressure-sensitive gloves and wireless sEMG acquisition system. Results The upper arm muscle was the main force muscle during TCCM, and biceps brachii had the highest contribution rate. The range of motion (ROM), speed, pulling force, and time during cervical spine positioning and directional rotation pulling were all greater than those during cervical spine lateral flexion. The integrate electromyography ( iEMG) and root mean square (RMS) for each muscle of the operator during cervical spine positioning and directional rotation pulling were higher than those during cervical spine lateral flexion. Conclusions The overall ROM, three-dimensional (3D) motion angle, load intensity and time during CCTM have the characteristics of high speed, low amplitude and strong force, reflecting the biomechanical characteristics of ‘ cunjin ’ ( one-inch punch ) in traditional Chinese medicine. This study provides references for further standardizing manual teaching and training and improving clinical safety.
8.Effects of Human Postures on Flow Characteristics in Iliac Vein Compression Syndrome
Chaoqun LI ; Yanqing ZHAN ; Zhongming WANG ; Yongxin GAO ; Peng QIU ; Cheng YAO
Journal of Medical Biomechanics 2023;38(3):E507-E513
Objective To investigate effects of human postures on flow characteristics of iliac vein compression syndrome. Methods The numerical model of iliac vein was reconstructed from CT images of a typical patient with pelvic-type iliac vein compression syndrome with collateral veins. Based on the computational fluid dynamics method, the non-Newtonian model and the porous media model were adopted to describe effects of abnormal structures on blood flow and acquire the wall shear stress and pressure of iliac vein. The discrete phase model was used to study the residence conditions of erythrocytes under three human postures. Results The pressure gradient at two ends of the compressive region was lowest under lying state, while the iliac vein showed a high pressure under sitting and walking states. The local maximum wall shear stresses under three postures were found at narrow segment of the collateral vein and convergence region of two flows of right iliac vein. The maximum shear stress was largest under lying state and smallest under sitting state. The blood residence time of 52.2 s in the left iliac vein was the longest under sitting state. The residence time of 14.8 s was shortest under lying state. The blood residence time was 23.8 s under walking state. Conclusions Porous media model used to simulate the effect of abnormal structures was highly consistent with the angiography data. The venous hypertension under sitting and walking states was consistent with the clinical results, and the lying state could relieve the hypertensive condition. In terms of wall shear stress and blood residence time in iliac vein, the continual change between three human postures would cause endothelial damage and blood flow stasis alternately, thus increase the risk of thrombosis.
9.Research and application of the SARS-CoV-2 vaccine based on adenovirus vector technology platform.
Ying ZHANG ; Wen Zhou YU ; Zun Dong YIN ; Tong Zhan WANG ; Xiao Dong SUN ; Ai Qiang XU
Chinese Journal of Preventive Medicine 2023;57(7):1082-1095
During the global efforts to prevent and control the COVID-19 pandemic, extensive research and development of SARS-CoV-2 vaccines using various technical approaches have taken place. Among these, vaccines based on adenovirus vector have gained substantial knowledge and experience in effectively combating potential emerging infectious diseases, while also providing novel ideas and methodologies for vaccine research and development (R&D). This comprehensive review focuses on the adenovirus vector technology platform in vaccine R&D, emphasizing the importance of mucosal immunity induced by adenoviral vector-based vaccine for COVID-19 prevention. Furthermore, it analyzes the key technical challenges and obstacles encountered in the development of vaccines based on the adenovirus vector technology platform, with the aim of providing valuable insights and references for researchers and professionals in related fields.
Humans
;
COVID-19 Vaccines
;
Pandemics/prevention & control*
;
COVID-19/prevention & control*
;
SARS-CoV-2/genetics*
;
Viral Vaccines/genetics*
;
Adenoviridae/genetics*
;
Technology
10.Investigation and analysis on knowledge, attitude and behavior about adult vaccination of the residents in Shandong Province.
Ying Jie ZHANG ; Wei Yan ZHANG ; Yang YU ; Ai Qiang XU ; Ren Peng LI ; Tong Zhan WANG
Chinese Journal of Preventive Medicine 2023;57(12):2029-2035
Objective: To understand the knowledge, attitude and behavior of adult residents on influenza, pneumococcus, human papillomavirus (HPV), herpes zoster (HZ), COVID-19, hepatitis B and rabies vaccination in Shandong Province. Methods: From August to September 2022, a multi-stage stratified random sampling method was used to investigate community-dwelling residents aged 18 years old and above in 12 counties (cities and districts) of Shandong Province. A questionnaire survey was used to collect the basic information of the respondents, such as knowledge, attitude and vaccination behavior of influenza, pneumococcus, HPV, HZ, COVID-19, hepatitis B and rabies vaccine. Analysis of variance was used to compare the differences in the respondents' knowledge and attitude scores of different vaccines. The Chi-square test was conducted to compare the differences in vaccination reasons among different characteristics, and a logistic regression model was used to analyze the influencing factors of vaccination behavior. Results: The median age (Q1, Q3) of the 2 754 respondents was 39 (29, 57) years ranging from 18 to 94 years, with a number of 1 234 (44.81%) males. The average score of the respondents' understanding of various knowledge about adult vaccines was less than 4 points, with the highest score for understanding which diseases can be prevented by adult vaccines. The average score of consent and necessity for adult vaccines to prevent diseases was greater than 3.6 points. In terms of knowledge demand and trust in information channels, there was a high level of trust in the recommendations of vaccination outpatient staff and clinical doctors [with scores of (4.15±0.79) and (4.02±0.80), respectively]. The highest demand for information on vaccination safety knowledge was (4.18±0.84) points. In recent two years, 52.11% of the population had been vaccinated with other vaccines in addition to the COVID-19 vaccine and rabies vaccine, and 45.44% of the population felt it was necessary to be vaccinated through media publicity. Women, age growth, high education level, and high-income level were the promoting factors for adopting vaccination behavior. Conclusion: Adult residents in Shandong Province have a basic understanding and supportive attitude towards vaccination, but the vaccination behavior rate is still relatively low, with significant differences in sex, age, education level, and income level. It is necessary to further increase efforts in the breadth and depth of adult vaccination promotion and education, as well as promotion strategies targeting different populations.
Adult
;
Male
;
Female
;
Humans
;
Adolescent
;
COVID-19 Vaccines
;
Health Knowledge, Attitudes, Practice
;
Influenza, Human
;
Papillomavirus Infections
;
Rabies Vaccines
;
Influenza Vaccines
;
COVID-19/prevention & control*
;
Hepatitis B
;
Herpes Zoster

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