Objective: To explore the effects of long non-coding RNA (LncRNA) MIR22HG on proliferation，apoptosis and inflammatory response of rheumatoid arthritis (RA) fibroblast-like synoviocytes (FLSs) and its molecular mechanism． Methods: Synovial tissue samples were collected from 37 RA patients and 30 joint trauma patients in our hospital，and the expression levels of MIR22HG and miR-22-5p in synovial tissue were detected by qRT-PCR. RA-FLSs in human was isolated ，cultured and identified in vitro． MIR22HG siRNA interference plasmid (si-MIR22HG) and its negative control plasmid (si-NC) ，miR-22-5p inhibitor and its negative control (inhibitorNC) were transfected into RA-FLSs respectively or simultaneously．The expression levels of MIR22HG and miR- 22-5p were detected by qRT-PCR. CCK-8 was used to detect the proliferation activity of cells in various groups. Annexin Ⅴ- FITC / PI was used to detect the apoptosis rates of cells in various groups．ELISA was used to detect the levels of TNF-α , IL-1 β and IL-6 in the supernatant of cells in various groups．Western blot was used to detect the protein expression levels of Bcl-2，Bax and Cleaved caspase-3 of cells in various groups．The targeting relationship between MIR22HG and miR-22-5p was verified by dual luciferase reporter gene assay. Results : Compared with joint trauma patients，the expression level of MIR22HG in synovial tissues of RA patients increased (P＜0. 05) ， while the expression level of miR-22-5p decreased (P＜0. 05) ．Interference with MIR22HG inhibited the proliferation activity of RA-FLSs，decreased the levels of TNF-α , IL-1 β and IL-6 in cell supernatant and the protein expression level of Bcl-2 in cells (P＜0. 05) ，and increased the apoptosis rate，the expression level of miR-22-5p and the protein expression levels of Bax and Cleaved casepase-3 (P ＜0. 05 ) ．However，inhibition of miR-22-5p expression reversed the effects of MIR22HG gene silencing on proliferation，apoptosis and inflammation of RA-FLSs (P＜0. 05) ．Dual luciferase reporting assay showed that miR-22-5p was a potential downstream miRNA target of MIR22HG． Conclusion MIR22HG is highly expressed in synovial tissues of RA patients，and it may promote the proliferation and the inflammatory response of RA-FLSs and inhibit cell apoptosis by down regulating the expression of miR-22-5p.

AIM: To discuss the application and clinical significance of the ratio of area under the curve over 24 hours to minimum inhibitory concentration (AUC

Objective: To investigate the effect of Yupingfeng on hyaluronic acid (HA) and Foxp3⁺ Treg in patients with nasopharyngeal carcinoma. Methods: A total of 58 cases of nasopharyngeal carcinoma were divided into two groups, 30 cases in the treatment group, 28 cases in the control group. Patients in two groups were treated with synchronous radiotherapy and chemotherapy treatment, the treatment group was treated with the Yupingfeng granules through oral administration, 10 g/time, tid for 2 courses. The serum Foxp3⁺ Treg markers of each group were detected by flow cytometry assay before treatment and after treatment, and the level of HA in serum was detected by radio immunoassay. Results: After radiotherapy and chemotherapy, the contents of Foxp3⁺ Treg and HA were significantly decreased in two groups (P < 0.05), and the decrease of treatment group was more significantly (P < 0.01). Correlation analysis showed positive correlation between Foxp3⁺ Treg and HA (P < 0.05). After treatment, the incidence of side effects in two groups was significantly decreased. And there was significant difference between two groups (P < 0.05). Conclusions: Combined chemotherapy and radiotherapy with Yupingfeng treatment can decrease the levels of Foxp3⁺ Treg and HA in nasopharyngeal carcinoma patients. Yupingfeng can also effectively reduce the side effect due to radiation and chemotherapy.

Adolescent ; Burkholderia pseudomallei ; pathogenicity ; Humans ; Male ; Pericarditis ; diagnosis ; microbiology

There is a rare case of an elderly diabetic with diabetic foot infection at Hainan General Hospital in September 2021, which was diagnosed as Corynebacterium diphtheriae infection incidentally on routine culture with conventional methods and molecular biological approaches, to aid in diagnosis in clinical practice. Owing to smear staining, Albert staining and VITEK 2 system, automated identification systems viz matrix-assisted laser desorption ionization-time of flight (MALDI-TOF) confirmed combing with 16S ribosomal RNA (16S rRNA) gene has been used for the taxonomic classification of bacteria. Otherwise, toxin gene tox was done for diphtheria toxin synthesis. The isolate was Gram-stain-positive, rod-like arrangement with irregular thickness, with characteristic metachromatic granules, ferment most sugars and homology of 16S rRNA analyses with C. diphtheriae NCTC11397^T (MW682323.1) was greater than a 100% possibility, toxin gene tox was negative. The findings lay the foundation to clinical identify and trace of non-toxigenic C. diphtheriae. Moreover, this work provides insights into the non-toxigenic C.diphtheriae that contribute to recognized risk of non-toxigenic C.diphtheriae infections.
Aged ; Corynebacterium/genetics* ; Corynebacterium diphtheriae/genetics* ; Diabetes Mellitus ; Diabetic Foot ; Diphtheria/microbiology* ; Humans ; RNA, Ribosomal, 16S/genetics*

Objective To investigate whether genotypes of CYP3A5,MDR1 and cyclooxygenase-2 are associated with the sensitivity of vinorelbine-platinum to NSCLC.Methods The genotypes of CYP3A5(*3),MDR1 (2677G>T at exon 21 and 3435C>T at exon 26 and their haplotypes),cyclooxygenase-2 (-1 195G>A) were determined by RFLP-PCR and chemotherapy responses were analyzed in 69 non-small-celllung cancer (NSCLC) Chinese Han patients.They received a combination chemotherapy of vinorelbine-cispla-tin.Chi-square test was used to investigate the potential association of genotype with chemotherapy response.OR and 95% C1 were calculated.Results The 3435 CC genotype was associated with a significantly betterchemotherapy response compared with the combined 3435 CT and 1Tr genotypes(P=0.033).The 2677 GG genotype was also associated with a significantly better chemotherapy response compared with the combined 2677 GT and IT genotype(P=0.012).Moreover.patients with the 2677 G-3435 C haplotype seemed to have a better response to chemotherapy compared with those with the other haplotypes(P=0.063).CYP3A5*3 was not likely to correlate with sensitivity of vinorelbine-platinum to NSCLC.Cyclooxygenase-2-1195G>A was likely to have better response to vinorelbine but not statistically significant(P=0.067).Conclusion Polymor-Dhisms of MDR1 3435 C>T and MDR1 2677 G>A/T can be used for predicting treatment response to vinorel-bine-cisplatin chemotherapy in NSCLC patients.

Objective Cataract surgery is also considered as a type of refractive surgery , but there is few research on the change of preoperative and postoperative ocular biometry measurements .The aim of the study was to compare the A-scan ultrasound biom-etry measurements before and after phacoemulsification with intraocular lens implantation , followed by the analysis on its clinical signifi-cance . Methods Dynamic observation was conducted in 188 eyes of 155 cataract patients who received cataract operation from January 2011 to January 2013 in the department of ophthalmology in Nanjing Gernal Hospital .Measurements were made before surgery and 14 days after surgery by Ultrascan Digital 2000 contact ultraound A-scan (Alcon), including anterior chamber depth (ACD), vitreous cham-ber depth ( V) and axial length ( AL) .Simultaneously , a prospective comparison of measurements was made by A-scan ultrasound in sit-ting and decubitus position .Measurements were also conducted in preoperative and postoperative visual acuity and intraocular pressure of the patients. Results visual acuity and intraocular pressure: The difference between preoperative and postoperative visual acuity [(0.17 ±0.19) vs (0.61 ±0.27)] and intraocular pressure [(15.09 ±8.50) mmHg vs (12.99 ±4.44) mmHg] was of statistical sig-nificance ( P<0.05) .ACD:The difference between peroperative and postoperative ACDs measured by A-scan ultrasound was of statisti-cal significance (P<0.05).No significant difference existed between ACDs in sitting and decubitus positions before and after the opera -tion (P>0.05).V:The difference between peroperative and postoperative Vs was of significant difference (P<0.05).No significant difference existed between Vs in sitting and decubitus position before the operation [(16.568 ±2.406) mm vs (16.524 ±5.544) mm,with intraocular lens implantation can get better operation result. In addition, different measuring positions have no influence on A-scan ultrasound measurements except the postoperative vitreous cavity depth .

BACKGROUND: Previous studies have shown that early quadriceps weakness aggravation is associated with ischemia and reperfusion resulting from surgical trauma and/or tourniquet use after total knee arthroplasty, while intake of sufficient amounts of dietary n-3 polyunsaturated fatty acids can limit tissue damage associated with ischemia and reperfusion. OBJECTIVE: To explore the correlation between the level of serum n-3 polyunsaturated fatty acids and quadriceps weakness in the early stage after total knee arthroplasty. METHODS: A total of 66 patients with knee joint osteoarthritis admitted to the Second Affiliated Hospital of Hainan Medical University from March 2018 to March 2020 were selected. All of them received total knee arthroplasty. On postoperative day 1, serum n-3 polyunsaturated fatty acids levels were measured. Quadriceps strength, knee pain during quadriceps testing, and knee circumference were measured on preoperative day 1 and postoperative day 4. According to the testing result of quadriceps strength, the patients were divided into high quadriceps weakness group (<-63.7%, n=33) and low quadriceps weakness group (≥-63.7%, n=33). Serum n-3 polyunsaturated fatty acids levels, knee pain during quadriceps testing, and knee circumference were compared between two groups. The correlation between the level of serum n-3 polyunsaturated fatty acids and quadriceps weakness was explored by Pearson correlation analysis. The influencing factors of quadriceps weakness were explored by multivariate Logistic regression analysis. The study was approved by the Ethics Committee of the Second Affiliated Hospital of Hainan Medical University. RESULTS AND CONCLUSION: (1) Compared with preoperatively, the quadriceps muscle strength decreased significantly, knee pain increased, and knee circumference increased after total knee arthroplasty in 66 patients (P < 0.01). (2) The level of n-3 polyunsaturated fatty acids and quadriceps strength in high quadriceps weakness group were lower than those in low quadriceps weakness group (P < 0.05). Knee pain was more serious in high quadriceps weakness group than that in low quadriceps weakness group (P < 0.05). The knee circumference was longer in high quadriceps weakness group than that in low quadriceps weakness group (P < 0.05). (3) Pearson correlation analysis showed that serum n-3 polyunsaturated fatty acids level was significantly positively correlated with quadriceps weakness (r= 0.356, P=0.004). (4) Multivariate logistic regression analysis showed that serum n-3 polyunsaturated fatty acids levels, knee pain, knee swelling and body mass index were independent influencing factors for quadriceps weakness after total knee arthroplasty (P < 0.05). (5) These results indicate that the level of serum n-3 polyunsaturated fatty acids was independent protective factors for quadriceps weakness after total knee arthroplasty.

Objective: To observe the effects of butylphthalide on cerebral ischemia-reperfusion injury in rats. Methods: We divided 90 SD rats into sham-operation group, model group, low-dose butylphthalide group, medium-dose butylphthalide group, high-dose butylphthalide group, and ATRA group. Neurological impairment score (NDS) was used to evaluate neurological function. TTC staining was used to calculate the volume of ischemic brain tissue. The xanthine oxidase method was used to detect SOD. The thiobarbituric acid colorimetry was used to detect MDA. ELISA was used to detect IL-6 and TNF-α expressions. The Real-time PCR was used to detect HO-1 gene expression. Western blot was used to detect Nrf2 and HO-1 protein expressions. Results: In low-, medium-, and high-butylphthalide groups, the NDS; volume of ischemic brain tissue; expressions of MDA, IL-6 and TNF-α; 2-△△Ct value of HO-1; protein expressions of Nrf2 and HO-1 were lower than those in model group (P<0.05), but SOD expression was higher than that in model group (P<0.05). The NDS; volume of ischemic brain tissue; expressions of MDA, IL-6 and TNF-α; 2-△△Ct value of HO-1; protein expressions of Nrf2 and HO-1 decreased in a dose-depended manner in low-, medium-, and high-butylphthalide groups, and SOD expression was increased in a dose-depended manner (P<0.05). Conclusion: Butylphthalide can play an antioxidant role by up-regulating Nrf2/HO-1 pathway, which benefits neuroprotective function in cerebral ischemia-reperfusion rats.

OBJECTIVE To study the improvement effect and possible mechanism of N-butylphthalide on inflammatory injury of bone marrow mesenchymal stem cells （BMSCs） in rats. METHODS BMSCs of rats were divided into control group， model group， N-butylphthalide low-concentration， medium-concentration and high-concentration groups （10， 20， 50 μmol/L）. BMSCs were cultured in vitro and lipopolysaccharide （the final concentration of 10 mg/L） was used to establish the inflammatory injury model. After the intervention of N-butylphthalide， the survival rate， apoptotic rate， the contents of tumor necrosis factor α （TNF- α）， interleukin 1β （IL-1β） and IL-6 in cell culture medium， the mRNA expression of nuclear factor-κB（NF-κB） p65， and the protein expressions of caspase-3， B-cell lymphoma 2 （Bcl-2）， Bcl-2 related X protein （Bax） and NF-κB p65 in cells were detected. RESULTS Compared with control group， the survival rate and protein expression of Bcl-2 were decreased significantly in model group （P＜0.05）； the apoptotic rate， contents of TNF-α， IL-1β and IL-6， the mRNA expression of NF-κB p65， and the protein expressions of caspase-3， Bax and NF-κB p65 were increased significantly （P＜0.05）. Compared with model group， above indexes were significantly reversed in all concentration groups of N-butylphthalide （P＜0.05）， in concentration-dependent manner. CONCLUSIONS N-butylphthalide can ameliorate the inflammatory injury of BMSCs induced by lipopolysaccharide， and its mechanism may be related to the inhibition of NF-κB signaling pathway.