This article introduced the main biological mechanisms of acupuncture promoting nerve function recovery after spinal cord injury, which include inhibition of inflammation and oxidative stress, alleviation of neuropathic pain, increase of neurotrophic active sub-stance, regulation of cell survival/apoptosis gene and neural regeneration pathway.

Objective: To observe the root and root canal morphology of mandibular second molars in Western Guangxi by CBCT, to provide a reference for clinical diagnosis and treatment. Methods: In total, 564 patients′ 1 128 mandibular second molars that satisfy the inclusion criteria were analyzed with a planmecaromexis CBCT machine and its own image analysis software. The patients′ gender, age and ethnic differences in the root and canal morphology and the symmetry of the bilateral root and canal were statistically analyzed. Results: Among the 1 128 mandibular second molars, 662 were the Zhuang ethnic group and 384 were the Han ethnic group, and 82 were other ethnic groups; the double root type and C-shaped root type accounted for a relatively high proportion: 73.94% and 24.47%, respectively. The detection rates of the double root type were higher in males than in females (P < 0.05); the detection rates of the C-shaped root type were higher in females than in males (P <0.05); the root type of the teeth was mainly double-rooted in the Zhuang ethnic group (P<0.01). The incidence of type IV in the mesial root of the double root type mandibular second molar was the highest (P < 0.01), and the incidence of type I in the distal root was the highest (P < 0.01). The C-shaped root canal is more continuous at the mouth of the root canal, more downward corresponds to a worse continuity: in three different levels of root canal orifice, root middle and root apex, the root canal orifice is dominated by the C1 type, and both root middle and root apex are mainly C3-type (P < 0.01). The difference in symmetry of bilateral roots and root canals was statistically significant among different gender groups, age groups, and ethnic groups (P < 0.05): there were more males than females, the results in the 18-35-year-old group and the Zhuang ethnic group were higher. Conclusion The root and root canal morphology of mandibular second molars in western Guangxi people are complex and changeable. The roots are mainly double root type in the Han ethnic group and the Zhuang ethnic group. C-shaped roots are also common. The detection rate of C-shaped roots in the Zhuang ethnic group was higher, and the symmetry rate of bilateral roots and that of bilateral root canals was higher in the Zhuang ethnic group than in the Han ethnic group.

Objective : To investigate the association between c. 1311C > T and c. 1004C > A of glucose⁃6 ⁃phosphate dehydrogenase (G6PD) gene single nucleotide polymorphism ( SNP) with the risk of G6PD deficiency in Guangxi population. Methods : 417 patients with G6PD deficiency were randomly selected as case group , and 295 healthy patients were selected as control group. The c. 1311C > T and c. 1004C > A were genotyped using the SNPscanTM multiple SNP method , and the haplotype frequency of two sites were analyzed by SHEsis. Results : In the case and control group , there were statistically significant differences in the distribution frequency of genotype TT , CC + CT and allele T at c. 1311C > T locus [TT vs CC :(P = 0. 001 , OR = 0. 373 , 95% CI = 0. 204 - 0. 683) ; TT vs CC + CT :(P = 0. 001 , OR = 0. 371 , 95% CI = 0. 203 - 0. 678) ; T vs C :(P = 0. 002 , OR = 0. 601 , 95% CI = 0. 435 - 0. 829)] ;however, there was no significant difference in genotype and allele distribution frequency at c. 1004C > A locus (P > 0. 05) . The results of the rate method showed that compared with genotype CC , the genotype CT at c. 1311C > T increased the expression level of G6PD enzyme , while the genotype TT decreased the expression level of G6PD enzyme(P < 0. 05) , the haplotype analysis showed that C ⁃C and T ⁃C were associated with G6PD risk (P < 0. 05) . Conclusion In Guangxi population , c. 1311C > T locus genotypes TT , CC + CT and allele T were related to the decreased risk of G6PD deficiency.

Objective : To investigate the association between c. 1311C > T and c. 1004C > A of glucose⁃6 ⁃phosphate dehydrogenase (G6PD) gene single nucleotide polymorphism ( SNP) with the risk of G6PD deficiency in Guangxi population. Methods : 417 patients with G6PD deficiency were randomly selected as case group , and 295 healthy patients were selected as control group. The c. 1311C > T and c. 1004C > A were genotyped using the SNPscanTM multiple SNP method , and the haplotype frequency of two sites were analyzed by SHEsis. Results : In the case and control group , there were statistically significant differences in the distribution frequency of genotype TT , CC + CT and allele T at c. 1311C > T locus [TT vs CC :(P = 0. 001 , OR = 0. 373 , 95% CI = 0. 204 - 0. 683) ; TT vs CC + CT :(P = 0. 001 , OR = 0. 371 , 95% CI = 0. 203 - 0. 678) ; T vs C :(P = 0. 002 , OR = 0. 601 , 95% CI = 0. 435 - 0. 829)] ;however, there was no significant difference in genotype and allele distribution frequency at c. 1004C > A locus (P > 0. 05) . The results of the rate method showed that compared with genotype CC , the genotype CT at c. 1311C > T increased the expression level of G6PD enzyme , while the genotype TT decreased the expression level of G6PD enzyme(P < 0. 05) , the haplotype analysis showed that C ⁃C and T ⁃C were associated with G6PD risk (P < 0. 05) . Conclusion In Guangxi population , c. 1311C > T locus genotypes TT , CC + CT and allele T were related to the decreased risk of G6PD deficiency.

Objective : To investigate the effects of immunoglobulin gene superfamily 10 (IGSF10) on prolifera- tion，migration and invasion of lung adenocarcinoma cells． Methods : ioinformatics was applied to study the ex- pression levels of IGSF10 in tumor tissues and normal tissues． Western blot and quantitative real-time PCR ( qPCR) were used to detect the expression level of IGSF10 in lung adenocarcinoma cell lines and normal lung epi- thelial cells．Knockdown of IGSF10，the effect of knockdown of IGSF10 on proliferation，migration and invasion of lung adenocarcinoma A549 cells was examined using cell counting kit-8 ( CCK-8) ，Transwell migration and inva- sion assay，scratch assay and plate cloning assay．The effects of knockdown of IGSF10 on the expression of invasion and migration-related genes in A549 cells were examined by Western blot and qPCR assays. Results : IGSF10 ex- pression in lung adenocarcinoma tissues was lower than that in normal tissues (P ＜0. 05) ．IGSF10 expression in lung adenocarcinoma cell lines was lower than that in lung epithelial cells (P＜0. 05) ．Knockdown of IGSF10 pro- moted the ability of lung adenocarcinoma A549 cells to proliferate ，proliferation ，migration and invasion ( P < 0. 05) ．Knockdown of IGSF10 promoted the expression of regulatory epithelial-mesenchymal transition marker Neu- ral-cadherin (N-cadherin) and key transcription factors Snail family transcriptional repressor 1 (Snail) and Snail family transcriptional repressor 2 (Slug) (P＜0. 05) and inhibited the expression of Epithelial-cadherin (E-cad- herin) (P＜0. 05) ． Conclusion Knockdown of IGSF10 may promote proliferation，migration and invasion of lung adenocarcinoma cells through activation of Snail，Slug / E-cadherin signaling axis，and this result may provide a po- tential new target for clinical diagnosis and treatment of lung adenocarcinoma.

Objective : To explore the "clinical normal reference range" of pulpal blood flow (PBF) in the physiological state in an effort to provide a reference for clinical diagnosis and treatment. Methods: According to the working principle and operational considerations of laser Doppler flowmetry (LDF), the PBF blood flow value of the first molars of the upper and lower mandibles of normal adults was detected by LDF, and the clinical reference value range under physiological conditions was analyzed and calculated. The differences in PBF values by sex, dental position and location (left and right side, upper and lower jaw) were analyzed. Results : A total of 200 normal adult participants with an average age of (22.76 ± 3.26) years were included. The cohort included 95 males and 105 females, with a total of 800 first molars. Neither the PBF values of the left and right first molars nor the PBF values of the upper and lower first molars in males or females significantly differed (P>0.05). The PBF value for females was higher than that of males. Specifically, the clinical reference PBF values for males and females were (8.56 ± 3.25) PU and (9.51 ± 3.47) PU, respectively. Conclusion The PBF values of normal adult first molars in healthy subjects were higher in females than in males, and in the PBF values of first molars of the same sex did not significantly differ between the left side and right side or upper and lower jaw; these values could be used as a reference for the selection of control teeth.

Objective : To investigate the outcomes of a novel direct pulp capping agent containing platelet-rich fibrin (PRF) and mineral trioxide aggregate (MTA). Methods : A total of 32 New Zealand rabbits were randomly divided into 4 groups, namely, the PRF+MTA group (P+M group), PRF group (P group), MTA group (M group) and blank control group (BC group), with 8 rabbits per group. Dental pulp exposure and direct pulp capping were performed, and complete crown square sealing was performed on 2 mandibular central incisor teeth of each rabbit. Four rabbits from each group were euthanized after each observation period (7 and 28 days). The experimental teeth were subjected to HE staining. Inflammatory cell infiltration, calcified bridge formation and pulp tissue disorganization were observed and graded. Results: Inflammatory cell infiltration: on the 7th day, group P+M and group M were lighter than group BC (P<0.05); on the 28th day, group P+M was lighter than group P and group BC (P<0.05); group P+M and group M did not significantly differ (P>0.05). Calcified bridge formation: on the 7th and 28th days, group P+M was lighter than group P, group M and group BC (P<0.05); on the 28th day, group M was higher than group BC (P<0.05). Under microscope, the calcified bridge contained cellular components and was surrounded by odontoblast-like cells, sharing a structure resembled osteodentin; dentin tubule-like structure could not be observed in calcified bridge, and the calcified bridge resembled certain points of osteodentin. Pulp tissue disorganization: on the 7th day, group P+M and group M were lighter than group BC (P<0.05); on the 28th day, group P+M was lighter than group P and group BC (P<0.05). group P+M and group M did not significantly differ (P>0.05). Conclusion The combination of PRF and MTA for direct pulp capping provided light inflammatory cell infiltration, stable pulp status and a strong ability of pulp tissue to form calcified bridge, and the calcified bridge resembled certain points of osteodentin.

Adult ; Asian Continental Ancestry Group ; statistics & numerical data ; China ; epidemiology ; Humans ; Hypertension ; ethnology ; Metabolic Syndrome ; ethnology

Objective: The research was aimed at exploring the effects of mandelic acid on the proliferation , apoptosis and migration of H1299 lung adenocarcinoma (LUAD) cells and the related molecular mechanisms. Methods: CCK⁃8 was used to detect changes in the proliferation ability of H1299 cells;Hoechst 33258/PI double⁃staining assay was used to analyze the apoptosis of H1299 cells;Transwell and migration assays were used to analyze changes in the invasive and migration ability of H1299 cells;Western blot was used to detect the expression of proliferation ,apoptosis and migration⁃related pathway proteins. Results : Different concentrations of mandelic acid inhibited the proliferation viability and invasion and migration ability of H1299 cells (P < 0. 05) . Mandelic acid induced high expression of bax and cl⁃caspase⁃3 and low expression of p ⁃stat3 in proliferation and apoptosis pathways (P < 0. 05) .In addition , it inhibited the expression of MMP⁃9 and Vimentin proteins ,which were related to invasion and migration (P < 0. 01) . Conclusion Mandelic acid inhibited the proliferation of H1299 LUAD cells and elevated the level of apoptosis , and molecular biological mechanism might be closely related to the decreased activation of stat3 and activation of bax/caspase⁃3 signaling axis. The inhibition of invasive and migrational ability of H1299 cells induced by mandelic acid was associated with the decreased expression of MMP⁃9 and Vimentin proteins.

ObjectiveThere are few reports about abnormal oligonucleotide binding fold domain protein genes (OBGs) affecting the initiation of DNA replication in hepatocellular carcinoma through the microchromosome maintenance (MCM) complex. This study aims to explore the roles of reverse-transcription-related genes (RTGs) in Hepatocellular Carcinoma cells (HCC) and the correlation between gene polymorphisms and abnormal gene expression.Methods We created a mouse model by injecting hepatocellular carcinoma cell line H22 (logarithmic growth phase) and dissected the tumor bodies from tumor-forming mice. The control group was treated by isotonic saline without H22. The healthy liver tissue cells were taken from the control mice. The total RNA of the H22 group and control group were extracted, and differentially expressed genes were analyzed. Screening of differentially expressed reverse transcription-related DEGs (RDEGs), GO and KEGG analysis of RDEGs. The interaction analysis of RDEGs encoded proteins, and the correlation analysis of RDEGs polymorphism and gene expression.ResultsThere were 193 differentially expressed RTGs in HCCs, which were involved in two biological procedures, three cell components, one molecular function, three signal pathways, and three functional sites; Its function is mainly concentrated in DNA replication, especially the construction of MCM complex and telomere complex in which OBGs participate in the initiation of replication. Most related genes had OB fold domains. The results also showed that both AS and SNV caused gene polymorphism was positively correlated with gene expression, and most OBGs in HCC had SNV phenomenon, but not occurred in healthy liver tissue.Conclusion Collectively, AS and SNV may be important regulatory factors for gene expression. SNV may particularly affect the function of OBGs in the MCM complex to abnormally initiate DNA replication in HCC.