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1.
Acta Anatomica Sinica ; (6): 296-304, 2023.
Article in Chinese | WPRIM | ID: wpr-1015217

ABSTRACT

[Abstract] Objective To investigate the effect of 6-gingerol treatment on cognitive behavior after hypoxic-ischemic brain injury (HIE) in neonatal mice, and to explore the protective mechanism of 6-gingerol on HIE brain injury in neonatal mice by observing the effects on neuronal survival and neural stem cell proliferation. Methods The right common carotid artery was ligated in Kunming mice (78) on the 7th day after birth and HIE model was established after 90 minutes of hypoxic treatment. 6-gingerol was injected intraperitoneally. The cognitive behavior was detected by Morris water maze test; 2,3,5-triphenyl tetrazolium chloride (TTC) staining was used to observe the changes of brain injury; The changes of synaptic structure and number were obseved by transmission electron microscopy; HE staining, Nissl staining and dihydroethidium(DHE) staining were used to observe the pathomorphological changes of hippocampus in each group; The proliferation of neural stem cells and the expression of related transcription factors were detected by immunofluorescence and Real-time PCR; The changes of Akt signal pathway were detected by Western blotting. Results 6-gingerol treatment could improve the long-term learning and memory ability, reduce the brain injury and brain edema of neonatal mice after HIE, and improve synaptic plasticity of mice after HIE. In the 6-gingerol treatment group, the disorder of hippocampal cells in the diseased side of HIE was improved, the number of necrotic cells decreased, the proliferation ability of hippocampal neural stem cells and the expression levels of nestin and sex determining region box transcription factor 2 (Sox2) related transcription factors increased significantly, and the level of phosphorylated Akt (p-Akt) increased. Conclusion It is found that 6-gingerol can improve the learning and memory ability of HIE mice in adulthood and reduce brain tissue injury after HIE. 6-gingerol may play a role in inhibiting the production of reactive oxygen species(ROS), reducing neuronal injury and upregulating the expression of Akt signal pathway, promoting the proliferation of hippocampal neural stem cells, so as to provide potential drugs for the treatment of neonatal HIE.

2.
Journal of Zhejiang University. Science. B ; (12): 922-934, 2023.
Article in English | WPRIM | ID: wpr-1010572

ABSTRACT

Multicellular spheroids, which mimic the natural organ counterparts, allow the prospect of drug screening and regenerative medicine. However, their application is hampered by low processing efficiency or limited scale. This study introduces an efficient method to drive rapid multicellular spheroid formation by a cellulose nanofibril matrix. This matrix enables the facilitated growth of spheroids (within 48 h) through multiple cell assembly into size-controllable aggregates with well-organized physiological microstructure. The efficiency, dimension, and conformation of the as-formed spheroids depend on the concentration of extracellular nanofibrils, the number of assembled cells, and the heterogeneity of cell types. The above strategy allows the robust formation mechanism of compacted tumoroids and hepatocyte spheroids.

3.
Chinese Journal of Preventive Medicine ; (12): 839-843, 2023.
Article in Chinese | WPRIM | ID: wpr-985484

ABSTRACT

The establishment of limit values for standards of drinking water quality is an important and complex process. This study systematically introduced the methodology of the establishment of standard limit values for drinking water quality and elaborated on the workflow of setting limit values of water quality indicators, principles and methods of selecting water quality indicators, derivation of safety reference values, and establishment of limit values. It also aimed to provide reference and support for the future revision of relevant standards.


Subject(s)
Humans , Water Supply , Drinking Water , Reference Standards , Water Quality , Water Pollutants, Chemical/analysis
4.
Chinese Journal of Preventive Medicine ; (12): 831-834, 2023.
Article in Chinese | WPRIM | ID: wpr-985482

ABSTRACT

China is rich in antimony, boron, and vanadium mineral resources, which have been detected in environmental water bodies and drinking water. During the revision process of the "Standards for Drinking Water Quality (GB5749-2006)", research and evaluation are focused on three indicators: antimony, boron and vanadium. Vanadium is added and the limit value of boron is adjusted. This study reviews and discusses the technical contents related to the revision of the antimony, boron and vanadium, including the environmental presence levels, exposure status, health effects, and the revision of the standard limits of these three indicators. Suggestions are also made for the implementation of this standard.


Subject(s)
Humans , Antimony , Boron/analysis , China , Drinking Water , Vanadium , Water Pollutants, Chemical/analysis
5.
Asian Journal of Andrology ; (6): 389-397, 2023.
Article in English | WPRIM | ID: wpr-981936

ABSTRACT

Male reproductive infections are known to shape the immunological homeostasis of the testes, leading to male infertility. However, the specific pathogenesis of these changes remains poorly understood. Exosomes released in the inflammatory microenvironment are important in communication between the local microenvironment and recipient cells. Here, we aim to identify the immunomodulatory properties of inflammatory testes-derived exosomes (IT-exos) and explore their underlying mechanisms in orchitis. IT-exos were isolated using a uropathogenic Escherichia coli (UPEC)-induced orchitis model and confirmed that IT-exos promoted proinflammatory M1 activation with increasing expression of tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and interleukin-6 (IL-6) in vitro. We further used small RNA sequencing to identify the differential miRNA profiles in exosomes and primary testicular macrophages (TMs) from normal and UPEC-infected testes, respectively, and identified that miR-155-5p was highly enriched in IT-exos and TMs from inflammatory testes. Further study of bone marrow derived macrophages (BMDMs) transfected with miR-155-5p mimic showed that macrophages polarized to proinflammatory phenotype. In addition, the mice that were administrated IT-exos showed remarkable activation of TM1-like macrophages; however, IT-exos with silencing miR-155-5p showed a decrease in proinflammatory responses. Overall, we demonstrate that miR-155-5p delivered by IT-exos plays an important role in the activation of TM1 in UPEC-induced orchitis. Our study provides a new perspective on the immunological mechanisms underlying inflammation-related male infertility.


Subject(s)
Humans , Male , Mice , Animals , Orchitis , Uropathogenic Escherichia coli/metabolism , MicroRNAs/metabolism , Exosomes/metabolism , Macrophages/metabolism , Phenotype , Infertility, Male/metabolism
6.
Chinese Medical Sciences Journal ; (4): 109-116, 2023.
Article in English | WPRIM | ID: wpr-981593

ABSTRACT

Objective To investigate the clinical symptoms experienced by patients with thoracic spinal tumors and verify the associated symptoms that are predictive of a decline in muscle strength in the lower limbs. Methods A single-center, retrospective cross-sectional study was conducted on in-patients diagnosed with epidural thoracic spinal tumors between January 2011 and May 2021. The study involved a review of electronic medical records and radiographs and the collection of clinical data. The differences in clinical manifestations between patients with constipation and those without constipation were analyzed. Binary logistic regression analyses were performed to identify risk factors associated with a decline in muscle strength in the lower limbs.Results A total of 227 patients were enrolled, including 131 patients with constipation and 96 without constipation. The constipation group had a significantly higher proportion of patients who experienced difficulty walking or paralysis compared to those without constipation prior to surgery (83.2% vs. 17.7%, χ2 = 99.035,P < 0.001). Constipation (OR = 9.522, 95%CI: 4.150-21.849, P < 0.001) and urinary retention (OR = 14.490, 95%CI: 4.543-46.213, P < 0.001) were independent risk factors for muscle strength decline in the lower limbs. Conclusions The study observed that patients with thoracic spinal tumors who experienced constipation symptoms had a higher incidence of lower limb weakness. Moreover, the analysis revealed that constipation and urinary retention were independent risk factors associated with a preoperative decline in muscle strength of lower limbs.


Subject(s)
Humans , Constipation/etiology , Cross-Sectional Studies , Lower Extremity , Muscle Strength , Retrospective Studies , Spinal Neoplasms , Urinary Retention
7.
Chinese Journal of Medical Education Research ; (12): 409-416, 2023.
Article in Chinese | WPRIM | ID: wpr-991331

ABSTRACT

Objective:To analyze the research progress, hot spots and future trends of standardized residency training of Traditional Chinese Medicine from 1998 to now by using CiteSpace knowledge map software.Methods:The related literature on standardized residency training of Traditional Chinese Medicine were retrieved on CNKI. And after Refworks format conversion, using CiteSpace 5.6 R3 software for the construction of knowledge map, the author cooperation, institutional cooperation, keyword co-occurrence, and time-sharing research hot spots views of related literature on standardized residency training of Traditional Chinese Medicine were drawn respectively.Results:A total of 259 papers were obtained, with 253 authors. Ren Xianqing and Cui Jin published the most articles (each with 4 papers), and Beijing University of Chinese Medicine published the most articles (with 23 papers). There were 259 keywords in total, and 16 keywords with frequency greater than 5 and centrality greater than 0.1. There were 14 keyword cluster tags, and 15 burst terms were detected in total, and the trend discussion was carried out accordingly.Conclusion:The research trend of the standardized residency training of Traditional Chinese Medicine mainly follows the relevant policies issued by the functional departments of the government, and the research hot spots depend on the obstacles and difficulties encountered in the practical application of each training base.

8.
Acta Anatomica Sinica ; (6): 19-27, 2022.
Article in Chinese | WPRIM | ID: wpr-1015368

ABSTRACT

Objective To explore the effect and mechanism of ginsenoside Rb1 on the repair of sciatic nerve injury (SNI) in mice. Methods Seventy-eight adult male Kunming mice were randomly divided into sham group (26), SNI group (26), SNI+Rb1 group (26). The SNI+Rb1 group was given 10 mg/kg ginsenoside Rb1 (i.p.), and the SNI group and the sham group were given the same volume of normal saline. The injury method was established by squeezing the sciatic nerve. Sciatic functional index (SFI) was used to evaluate sciatic nerve function. Growth associated protein 43 (GAP43) immunofluorescent staining was used to detect neural regeneration and repair on day 14, and the structure changes of the myelin sheath of the injured segment were observed under transmission electron microscope. Ki67 and S100β were used to detect the proliferation and migration ability of Schwann cells, and Real-time PCR was used to detect the mRNA expression levels after crush on day 3 and day 7. Results SFI of SNI+Rb1 group was higher than SNI group. The HE result showed that the sciatic nerve was uniform in the SNI + Rb1 group. The result of immunofluorescent staining displayed that Rb1 enhanced GAP43

9.
China Pharmacy ; (12): 2261-2265, 2022.
Article in Chinese | WPRIM | ID: wpr-943069

ABSTRACT

OBJECTIVE To establis h and validate a population pharmacokinetic model of docetaxel in malignant tumor patients. METHODS The clinical data of malignant tumor patients treated with chemotherapy regimen containing docetaxel in our hospital from June 2019 to December 2021 were retrospectively collected . According to the results of blood concentration detection , based on the three -compartment model the nonlinear mixed effect model (NONMEM)was used ;covariates(age,weight,height, body surface area ,Karnofsky performance scale ,total protein ,albumin,total bilirubin ,aspartate aminotransferase ,alanine aminotransferase and serum creatinine )affecting clearance (CL)were screened by “forward inclusion and backward exclusion ”; the population pharmacokinetic model of docetaxel was established . The model was tested for goodness -of-fit diagnosis and internal validation by Bootstrap . RESULTS A total of 264 measured blood concentrations of 132 patients with malignant tumors during chemotherapy were included . The covariates that had significant effect on CL of docetaxel were serum creatinine and total bilirubin (P<0.01). The results of Bootstrap analysis (parameter median values and 95% confidence intervals )were close to predict results of the established model ;the final model estimated that the population typical value of docetaxel CL was 37.82 L/h. CONCLUSIONS The population pharmacokinetic model of docetaxel in malignant tumor patients is established successfully , which can be used for the formulation and optimization of clinical individualized regimen .

10.
Chinese Journal of Gastrointestinal Surgery ; (12): 648-653, 2022.
Article in Chinese | WPRIM | ID: wpr-943050

ABSTRACT

Gut microbiota have been validated to play a pivotal role in metabolic regulation. As the most effective treatment for obesity and related comorbidities, bariatric surgery has been shown to result in significant alterations to the gut microbiota. Literature have recently suggested temporal and spatial features of alterations to the intestinal bacteria following bariatric surgery, which is possibly attributed to the gut adaptation to the surgical modification on the gastrointestinal tract. More importantly, the gut microbiota have been appreciated as a critical contributor to the metabolic improvements following bariatric surgery. Although not fully elucidated, the underlying mechanisms are associated with the molecular pathways mediating the crosstalk between gut microbiota and host . On the other hand, change of the gut microbiota has been found to be related to the prognosis of patients receiving bariatric surgery. Some studies even point out negative effects of the gut microbiota on certain surgical complications . In this review, we summarize the characteristics of alterations to the gut microbiota following bariatric surgery as well as its relevant impacts to better understand the role of gut microbiota in bariatric surgery.


Subject(s)
Humans , Bariatric Surgery , Gastrointestinal Microbiome/physiology , Gastrointestinal Tract , Obesity/surgery , Treatment Outcome
11.
Chinese Journal of Experimental Traditional Medical Formulae ; (24): 73-80, 2022.
Article in Chinese | WPRIM | ID: wpr-940422

ABSTRACT

ObjectiveTo study the possible molecular mechanism of baicalein (BAI)-mediated focal adhesion kinase (FAK) in the regulation of phosphatidylinositol 3-kinase/protein kinase B (PI3K/Akt) signaling pathway to inhibit the proliferation and migration of gastric cancer HGC-27 cells. MethodThe gastric epithelial GES-1 cells and gastric cancer HGC-27 cells were respectively treated with BAI (0, 5, 15, 25, and 50 μmol·L-1) for 48 h, and then methyl thiazolyl tetrazolium (MTT) assay was adopted to detect effect of BAI on cell proliferation. Western blot (WB) was employed to detect the expression of FAK and the proteins related to epithelial-mesenchymal transition (EMT) and PI3K signaling pathway after intervention with different concentrations of BAI. The HGC-27 cells stably overexpressing FAK were constructed with lentivirus-mediated transfection technique, and the transfection of FAK was detected through WB and green fluorescent protein (GFP). The cells were divided into empty vector (NC) group, BAI group, FAK overexpression group, and BAI-treated FAK overexpression group, and cell proliferation activity was detected by MTT assay. The colony formation and cell migration were observed via colony formation assay and Transwell migration assay, respectively. The expression of proteins involved in EMT and PI3K signaling pathways were detected by Western blot. ResultCompared with the NC group, BAI (15, 25 and 50 μmol·L-1) inhibited the proliferation of HGC-27 cells in a dose-dependent manner (P<0.05, P<0.01) while did not affect that of GES-1 cells. BAI (5, 15 and 25 μmol·L-1) down-regulated the expression level of p-FAK (P<0.05, P<0.01). Compared with NC group, FAK overexpression group showed up-regulated expression level of FAK in HGC-27 cells. The HGC-27 cells in both NC group and FAK overexpression group had green fluorescence. Compared with NC group, BAI inhibited the growth, colony formation, and migration, while FAK overexpression promoted those of HGC-27 cells. The treatment of FAK overexpression group with BAI inhibited the enhancement of cell proliferation and migration (P<0.05). WB showed that compared with NC group, BAI (15, 25 μmol·L-1) significantly up-regulated the expression of E-cadherin protein and down-regulated that of Vimentin, Snail, p-PI3K, and p-Akt protein in HGC-27 cells (P<0.05, P<0.01). Compared with NC group, FAK overexpression group showed down-regulated expression of E-cadherin, up-regulated expression of p-FAK, Vimentin, and Snail, and increased ratios of p-FAK/FAK, p-PI3K/PI3K and p-Akt/Akt (P<0.05). This phenomenon would be reversed after BAI treatment. ConclusionBAI can affect the proliferation and migration of gastric cancer HGC-27 cells by mediating FAK to regulate PI3K/Akt signaling pathway.

12.
Chinese Journal of Geriatrics ; (12): 276-280, 2022.
Article in Chinese | WPRIM | ID: wpr-933072

ABSTRACT

Objective:To explore the effect of minimally invasive hematoma puncture and drainage in the treatment of elderly patients with cerebral hemorrhage by using 3D slicer and Sina software to conduct 3D reconstruction and preoperative localization of intracerebral hematoma.Methods:A total of 74 elderly patients with a first-onset intracerebral hematoma aged ≥75 years, having surgical indications and stable vital signs were grouped into 3D slicer plus Sina software localization group(as group A, n=40)or CT localization group(as group B, n=34). Based on the localization, hematoma puncture and drainage were performed after local anesthesia.Preoperative preparation time, hematoma location, puncture success rate, postoperative hematoma clearance rate, postoperative re-bleeding rate and GCS score were statistically analyzed.Glasgow coma scale(GCS)scores were used in predicting the mortality.Results:The preoperative preparation time was significantly shorter in group A than in group B[(5.5±3.4)min vs.(8.5±2.7)min, t=3.337, P=0.001]. The success rate of hematoma puncture and drainage(90.0% and 70.6%, χ2=4.51, P=0.034)and postoperative hematoma clearance rate[(87.5±3.4)% and(80.3±2.7)%, t=10.10, P=0.000]were higher in group A than in group B. There were no significant differences in operative time, the accuracy of hematoma localization, re-bleeding rate and GCS score between the two groups( P>0.05). Conclusions:3D slicer plus Sina software can precisely locate the intracerebral hematoma, and minimally invasive hematoma puncture and drainage of intracerebral hematoma under local anesthesia were safe and effective in the treatment of elderly patients with intracerebral hemorrhage.

13.
Chinese Journal of Radiation Oncology ; (6): 298-302, 2022.
Article in Chinese | WPRIM | ID: wpr-932671

ABSTRACT

The effect of radiotherapy on anti-tumor immunity is bidirectional, immunotherapy, especially the combination of immune checkpoint inhibitors (ICIs) and radiotherapy, can produce synergistic effects on anti-tumor immunity. Compared with conventional radiotherapy, stereotactic ablative body radiotherapy (SABR) can achieve high-precision and high-dose irradiation on target lesions, and has stronger anti-tumor immune activation effect. At the same time, due to the steep dose gradient, SABR can better protect the surrounding normal tissues, which is an effective means for the rapid control of local lesions in advanced non-small cell lung cancer (NSCLC). ICIs are an important component of standard treatment for advanced NSCLC. There is growing evidence that SABR in combination with ICIs can benefit patients with advanced NSCLC. This article reviews the biological basis and clinical research progress on the combination of these two therapies, aiming to provide reference for the domestic counterparts to better use this new treatment model.

14.
Biomedical and Environmental Sciences ; (12): 395-399, 2021.
Article in English | WPRIM | ID: wpr-878376

ABSTRACT

Climate change has been referred to as one of the greatest threats to human health, with reports citing likely increases in extreme meteorological events. In this study, we estimated the relationships between temperature and outpatients at a major hospital in Qingdao, China, during 2015-2017, and assessed the morbidity burden. The results showed that both low and high temperatures were associated with an increased risk of outpatient visits. High temperatures were responsible for more morbidity than low temperatures, with an attributed fraction (AF) of 16.86%. Most temperature-related burdens were attributed to moderate cold and hot temperatures, with AFs of 5.99% and 14.44%, respectively, with the young (0-17) and male showing greater susceptibility. The results suggest that governments should implement intervention measures to reduce the adverse effects of non-optimal temperatures on public health-especially in vulnerable groups.


Subject(s)
Adolescent , Adult , Aged , Aged, 80 and over , Child , Child, Preschool , Female , Humans , Infant , Infant, Newborn , Male , Middle Aged , Young Adult , Ambulatory Care/statistics & numerical data , Cardiovascular Diseases/therapy , China/epidemiology , Cold Temperature/adverse effects , Cost of Illness , Digestive System Diseases/therapy , Facilities and Services Utilization/statistics & numerical data , Hot Temperature/adverse effects , Poisson Distribution , Respiratory Tract Diseases/therapy , Risk Factors
15.
China Journal of Orthopaedics and Traumatology ; (12): 437-441, 2021.
Article in Chinese | WPRIM | ID: wpr-879458

ABSTRACT

OBJECTIVE@#To explore clinical effectiveness and safety of ultrasound-guided closed reduction and K-wires internal fixation in treating of Kilfoyle Ⅱand Ⅲ medial condylar fracture of humerus in children.@*METHODS@#Clinical data of 32 children with medial condylar fracture of humerus treated with closed reduction and internal fixation with K-wires under the guidance of ultrasound were retrospectively analyzed from January 2014 to August 2019, including 23 males and 9 females, age ranged from 3.2 to 12.8 years old with an average of (8.3±2.1) years old;According to classification of Kilfoyle, 12 patients classified to typeⅡ and 20 patients were type Ⅲ;5 patients combined with elbow dislocation;the time from injury to operation ranged from 1 to 5 days with an average of (3.1±1.3) days. Radiological evaluation of treatment results and complications were observed. At the final follow up, Mayo elbow performance score(MEPS) was used to evaluate elbow function. And humerus-ulna angle on the affect side and healthy side were measured and compared.@*RESULTS@#All patients were followed up from 8 to 26 months with an average of(19.3±5.5) months. All fractures were healed well, the healing time ranged from 4 to 6 weeks with an average of (4.5±0.5) weeks. No infection, vascular and nerve injury, bone nonunion, trochlear necrosis, cubitus varus or valgus deformity were occurred. According to Mayo scoring, all patients were assessed as excellent. There was no significant difference in angle of humerus-ulna between affectedside (9.5±3.6)° and healthy side (9.1±3.5)°, and no difference in MEPS scores between affected side(95.3±2.5) and healthy side(96.3±2.2)(@*CONCLUSION@#For Kilfoyle typeⅡand Ⅲ medial condylar fracture of humerus in children, closed reduction and internal fixation with K-wire under ultrasound guidance is a safe and effective method, and could promote in further.


Subject(s)
Child , Child, Preschool , Female , Humans , Male , Bone Wires , Fracture Fixation, Internal , Humeral Fractures/surgery , Humerus , Retrospective Studies , Treatment Outcome , Ultrasonography, Interventional
16.
Neuroscience Bulletin ; (6): 535-549, 2021.
Article in Chinese | WPRIM | ID: wpr-951999

ABSTRACT

Ferroptosis is a form of iron-dependent regulated cell death. Evidence of its existence and the effects of its inhibitors on subarachnoid hemorrhage (SAH) is still lacking. In the present study, we found that liproxstatin-1 protected HT22 cells against hemin-induced injury by protecting mitochondrial functions and ameliorating lipid peroxidation. In in vivo experiments, we demonstrated the presence of characteristic shrunken mitochondria in ipsilateral cortical neurons after SAH. Moreover, liproxstatin-1 attenuated the neurological deficits and brain edema, reduced neuronal cell death, and restored the redox equilibrium after SAH. The inhibition of ferroptosis by liproxstatin-1 was associated with the preservation of glutathione peroxidase 4 and the downregulation of acyl-CoA synthetase long-chain family member 4 as well as cyclooxygenase 2. In addition, liproxstatin-1 decreased the activation of microglia and the release of IL-6, IL-1β, and TNF-α. These data enhance our understanding of cell death after SAH and shed light on future preclinical studies.

17.
Journal of Clinical Hepatology ; (12): 2384-2388, 2021.
Article in Chinese | WPRIM | ID: wpr-904953

ABSTRACT

Objective To investigate the value of multiplex bead-based flow fluorescent immunoassay (MBFFI) in the diagnosis of primary biliary cholangitis (PBC) by analyzing its results in detecting antimitochondrial antibody M2 subtype (AMA-M2), gp210 antibody, and sp100 antibody. Methods A total of 340 patients who attended The Affiliated Hospital of Qingdao University from August 2018 to June 2020 and were diagnosed with PBC were enrolled as PBC group, and 143 patients with other diseases and 117 individuals undergoing physical examination were also enrolled. MBFFI and immunoblotting test (IBT) were used to detect AMA-M2, gp210, and sp100 autoantibodies in serum, and the Kappa-test was used to compare the consistency of the two methods in detecting the same autoantibody; the receiver operating characteristic (ROC) curve was used to evaluate the value of MBFFI detection of three antibodies in the diagnosis of PBC; the chi-square test was used to compare positive. Results In the PBC group, the two methods showed the best consistency in detecting AMA-M2(Kappa=0.874) and showed relatively good consistency in detecting gp210 and sp100 antibodies (Kappa=0.713 and 0.749). MBFFI had the highest sensitivity of 72.06% in detecting AMA-M2; it had a sensitivity of 44.71% in the combined detection of gp210 and sp100 antibodies, which was higher than its sensitivity in detecting each antibody alone; it had a sensitivity of 82.65% in the combined detection of AMA-M2, gp210, and sp100 antibodies, which was higher than its sensitivity in detecting each antibody alone. Combined detection of the three antibodies had the largest area under the ROC curve of 0.907 0 in the diagnosis of PBC. Conclusion MBFFI has good consistency with IBT in detecting autoantibodies associated with PBC, and the combined detection of AMA-M2, gp210, and sp100 antibodies by MBFFI has higher sensitivity and value in the diagnosis of PBC.

18.
Journal of Clinical Hepatology ; (12): 2384-2388, 2021.
Article in Chinese | WPRIM | ID: wpr-904903

ABSTRACT

Objective To investigate the value of multiplex bead-based flow fluorescent immunoassay (MBFFI) in the diagnosis of primary biliary cholangitis (PBC) by analyzing its results in detecting antimitochondrial antibody M2 subtype (AMA-M2), gp210 antibody, and sp100 antibody. Methods A total of 340 patients who attended The Affiliated Hospital of Qingdao University from August 2018 to June 2020 and were diagnosed with PBC were enrolled as PBC group, and 143 patients with other diseases and 117 individuals undergoing physical examination were also enrolled. MBFFI and immunoblotting test (IBT) were used to detect AMA-M2, gp210, and sp100 autoantibodies in serum, and the Kappa-test was used to compare the consistency of the two methods in detecting the same autoantibody; the receiver operating characteristic (ROC) curve was used to evaluate the value of MBFFI detection of three antibodies in the diagnosis of PBC; the chi-square test was used to compare positive. Results In the PBC group, the two methods showed the best consistency in detecting AMA-M2(Kappa=0.874) and showed relatively good consistency in detecting gp210 and sp100 antibodies (Kappa=0.713 and 0.749). MBFFI had the highest sensitivity of 72.06% in detecting AMA-M2; it had a sensitivity of 44.71% in the combined detection of gp210 and sp100 antibodies, which was higher than its sensitivity in detecting each antibody alone; it had a sensitivity of 82.65% in the combined detection of AMA-M2, gp210, and sp100 antibodies, which was higher than its sensitivity in detecting each antibody alone. Combined detection of the three antibodies had the largest area under the ROC curve of 0.907 0 in the diagnosis of PBC. Conclusion MBFFI has good consistency with IBT in detecting autoantibodies associated with PBC, and the combined detection of AMA-M2, gp210, and sp100 antibodies by MBFFI has higher sensitivity and value in the diagnosis of PBC.

19.
International Journal of Biomedical Engineering ; (6): 447-453, 2021.
Article in Chinese | WPRIM | ID: wpr-929931

ABSTRACT

Objective:To analyze the differentially expressed genes related to gastric cancer and analyze their related signaling pathways.Methods:The gastric cancer-related gene expression chips GSE63121 (miRNA) and GSE2685 (mRNA) were selected from the GEO database. After setting the screening criteria, the differentially expressed genes were obtained, and then the miRDB database was used to predict the common genes related to gastric cancer. GO and KEGG enrichment analyses were performed on consensus genes in the DAVID database. Genes with interactions were visualized using the STRING database to construct a PPI of differentially expressed genes. The relationship between differentially expressed genes and the survival rate of gastric cancer patients were predicted by the GEPIA database, and the meaningful differentially expressed genes were screened according to prognosis. Finally, the TIMER2.0 database was used to analyze the correlation between the finally screened genes and immune cell infiltration.Results:A total of 734 differentially expressed genes were obtained, of which 261 and 473 genes were up-regulated and down-regulated, respectively, and a total of 20 differentially expressed miRNA genes were obtained, of which 1 and 19 genes were up-regulated and down-regulated, respectively. Among these genes, a total of 103 genes were mapped, which were mainly involved in the regulation of immune system and metabolic process in gastric cancer. The screened significantly differentially expressed genes were CREB1 and ESR1, and gastric cancer patients had better prognosis with low expression of CREB1 and ESR1. The expressions of CREB1 and ESR1 were both positively correlated in gastric cancer tissue with the infiltration level of regulatory T cells (Tregs) in the tumor microenvironment (all P<0.05). Conclusions:CREB1 and ESR1 affect immune infiltration during the occurrence and development of gastric cancer. The high expression of CREB1 and ESR1 is associated with poor prognosis. The possible reason is that there are more Tregs cells in the tumor microenvironment. CREB1 and ESR1 are expected to become important targets for studying the pathogenesis and molecular mechanism of gastric cancer and its clinical application.

20.
Chinese Journal of Biotechnology ; (12): 1858-1868, 2021.
Article in Chinese | WPRIM | ID: wpr-887768

ABSTRACT

Sucrose is a natural product occurs widely in nature. In living organisms such as plants, sucrose phosphate synthase (SPS) is the key rate-limiting enzyme for sucrose synthesis. SPS catalyzes the synthesis of sucrose-6-phosphate, which is further hydrolyzed by sucrose phosphatase to form sucrose. Researches on SPS in recent decades have been focused on the determination of enzymatic activity of SPS, the identification of the inhibitors and activators of SPS, the covalent modification of SPS, the carbohydrate distribution in plants regulated by SPS, the mechanism for promoting plant growth by SPS, the sweetness of fruit controlled by SPS, and many others. A systematic review of these aspects as well as the crystal structure and catalytic mechanism of SPS are presented.


Subject(s)
Carbohydrate Metabolism , Glucosyltransferases/metabolism , Plants/metabolism , Sucrose
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