[A new triterpenic acid from the roots of Rosa laevigata].

This study was designed to investigate triterpenoids from the roots of Rosa laevigata Michx. The silica gel column chromatography was used to separate the chemical constituents from the roots of Rosa laevigata Michx. HPLC was used to analyze its purity and chemical constitution. Spectroscopy methods were used to determine their structures. Five constituents were isolated and identified as19α-OH-3ß-E-feruloyl corosolic acid (1), 23-hydroxy-tormentic acid (2), 2α, 3ß, 19α, 23- tetrahydroxy-12-en-28-oleanolic acid (3), 2α, 3α, 20ß- trihydroxyurs-13 (18)-en-28-oic-acid (4), 2α, 3ß, 20ß-trihydroxyurs-13 (18)-en-28-oic-acid (5). Compound 1 was assigned as a new compound, compounds 4, 5 were obtained from the genus Rosa for the first time.

[Effects of Wenhua Juanbi Recipe on the Expressions of DNA Methyltransferases in Peripheral Blood Mononuclear Cells of Collagen-Inducing Arthritis Rats].

Objective To observe the effect of Wenhua Juanbi Recipe (WJR) on the expres- sions of DNA methyltransferases (DNMTs) in peripheral blood mononuclear cells (PBMCs) of collagen- inducing arthritis (CIA) , and to study its mechanism for treating CIA. Methods Totally 90 Wistar rats were randomly divided into the model group (n =80) and the normal control group (n = 10). Rats of the model group were injected with type II collagen of bovine (BC II) emulsion from the tail to establish CIA model. Successfully modeled 50 CIA rats were randomly divided into five groups, i.e., the model group, the methotrexate (MTX) group, the low dose WJR group, the middle dose WJR group, the high dose WJR group, 10 in each group. Rats in the model group were administered with normal saline by gastrogavage, once per day. Rats in low, middle, and high dose WJR groups were administered with WJR by gas- trogavage at the daily dose of 22. 9, 45. 8, 68. 7 g/kg, respectively (once per day). Rats in the MTX group were administered with MTX suspension (0.78 mg/kg) by gastrogavage, once per week for 30 successive days. The paw swelling was evaluated using volume method (draining volume). PBMCs were extrac- ted from each group after intervention. mRNA expression levels of DNMTs (DNMT1 , DNMT3a, DNMT3b) were detected by real-time quantitative PCR. Results Compared with the normal group, the paws were obviously swollen in the model group (P <0. 01). Compared with the model group, swollen paws were obviously alleviated in low, middle, and high dose WJR groups, and the MTX group (P <0.01). Compared with before treatment in the same group, swollen paws were obviously alleviated in low, middle, and high dose WJR groups, and the MTX group (P <0. 01 ). Compared with the normal group, expression levels of DNMT1, DNMT3a, and DNMT3b in PBMCs were obviously lowered in the model group (P <0.01). Compared with the model group, expression levels of DNMT1 , DNMT3a, DNMT3b in PBMCs were obviously elevated in low, middle, and high dose WJR groups, and the MTX group (all P <0. 01). There was no sig- nificant difference in expression levels of DNMT1, DNMT3a, or DNMT3b in PBMCs among low, middle, and high dose WJR groups (P>0.05). Conclusions Expression levels of DNMTs in PBMCs of CIA rats decreased. WJR up-regulated the expression level of DNMTs in PBMCs of CIA rats in no obvious dose de- pendent way. One of WJR's mechanisms for treating CIA might be up-regulating expression levels of DN- MTs, and adjusting the state of DNA methylation.

[Triterpenoids from roots of Rosa laevigata].

To study the triterpenoids from the roots of Rosa laevigata. The silica gel column chromatography was used to separate the chemical constituents from the roots of Rosa laevigata Michx. HPLC was used to analyze its purity, chemical and spectroscopy methods were used to determine their structures. 12 constituents were isolated and identified as(2R, 19R)methyl 2-acetyloxy-19- hydroxyl-3-oxo-urs-12-en-28-carboxylate(1), pomonic acid (2), 18, 19-seco, 2α, 3α-dihydroxy-19-oxo-urs-11, 13(18)-dien-28-oic acid(3), swinhoeic acid (4), myrianthic acid(5), 2α, 3ß, 19α-trihydroxy-24-oxo-urs-12-en-oic acid (6), tormentic acid(7), arjunic acid (8), 1ß-hydroxyeuscaphic acid(9), quadranoside Ⅷ (10), alpinoside(11), rubuside B (12). Compounds 1-4, 6, 9, 11-12 were obtained from this plant for the first time. Compounds 2-4, 6, 11-12 were obtained from the genus Rosa for the first time.

Smurf1-targeting microRNA-136-5p-modified bone marrow mesenchymal stem cells combined with 3D-printed ß-tricalcium phosphate scaffolds strengthen osteogenic activity and alleviate bone defects.

Suitable biomaterials with seed cells have promising potential to repair bone defects. However, bone marrow mesenchymal stem cells (BMSCs), one of the most common seed cells used in tissue engineering, cannot differentiate efficiently and accurately into functional osteoblasts. In view of this, a new tissue engineering technique combined with BMSCs and scaffolds is a major task for bone defect repair. Lentiviruses interfering with miR-136-5p or Smurf1 expression were transfected into BMSCs. The effects of miR-136-5p or Smurf1 on the osteogenic differentiation (OD) of BMSCs were evaluated by measuring alkaline phosphatase activity and calcium deposition. Then, the targeting relationship between miR-136-5p and Smurf1 was verified by bioinformatics website analysis and dual luciferase reporter assay. Then, a rabbit femoral condyle bone defect model was established. miR-136-5p/BMSCs/ß-TCP scaffold was implanted into the defect, and the repair of the bone defect was detected by Micro-CT and HE staining. Elevating miR-136-5p-3p or suppressing Smurf1 could stimulate OD of BMSCs. miR-136-5p negatively regulated Smurf1 expression. Overexpressing Smurf1 reduced the promoting effect of miR-136-5p on the OD of BMSCs. miR-136-5p/BMSCs/ß-TCP could strengthen bone density in the defected area and accelerate bone repair. SmurF1-targeting miR-136-5p-modified BMSCs combined with 3D-printed ß-TCP scaffolds can strengthen osteogenic activity and alleviate bone defects.

[Effects of qubi zhentong recipe on the expressions of IL-1beta, IL-8, and VEGF in the synovial of rats with collagen-inducing arthritis].

OBJECTIVE: To research the effects of Qubi Zhentong Recipe (QZR) on the expressions of interleukin-1beta (IL-1beta), interleukin-8 (IL-8), and vascular endothelial growth factor (VEGF) in the synovial of rats with collagen-inducing arthritis (CIA), and to discuss its mechanisms of action. METHODS: Healthy male Wistar rats were recruited and randomly divided into the model group ( n = 50) and the normal control group (n = 10). Rats of the model group were injected with type II collagen of bovine (BC II) emulsion in the tail and nape to establish the CIA model. After successful modeling, 30 successfully modeled rats were selected and randomly divided into three groups, i.e., the model group (n = 10), the QZR group (n = 10), and the methotrexate (MTX) group (n = 10). Rats in the normal control group and the model group were administered with physiological saline by gastrogavage, while those in the QZR group were administered with QZR at 22.9 g/kg by gastrogavage. All medication was performed once daily. The rats in the MTX group were administered with MTX suspension at 0.78 mg/kg by gastrogavage, once per week. After 30-day treatment, the levels of IL-1beta, IL-8, and VEGF in the synovial were detected by immunohistochemical method. The arthritis index (AI) was scored before and after medication. RESULTS: After treatment the AL score of the QZR group and the MTX group was obviously lower than that of the model group (P < 0.01). The AI score of the two drug groups were lower than that before treatment (P < 0.01). Compared with the normal control group, the expression levels of IL-1beta, IL-8, and VEGF obviously increased in the model group (P < 0.01). Compared with the model group, the expression levels of IL-1beta, IL-8, and VEGF were significantly lower in the two drug groups (P < 0.01). But there was no statistical difference between the QZR group and the MTX group (P > 0.05). CONCLUSION: Decreasing the expression levels of IL-1beta, IL-8, and VEGF in the synovial of CIA rats may be one of the mechanisms for treating CIA by QZR.

[Effects of wenhua juanbi recipe on the gene expression profile of the synovium in collagen-induced arthritic rats].

OBJECTIVE: To study the effects of Wenhua Juanbi recipe (WJR) on the gene expression profile of the synovium in collagen-induced arthritis (CIA) rats, and to explore its mechanisms for treating CIA. METHODS: The CIA model was induced by intradermal injection of bovine collagen type II emulsion from the tail of 40 healthy male Wistar rats. Selected 16 successfully modeled rats were randomly divided into the model group and the WJR-treated group, 8 in each group. WJR at the daily dose of 22.9 g/kg was given to rats in the WJR-treated group by gastrogavage, while normal saline was given to those in the model group. Both were performed once daily, for 30 successive days. By the end of medication, the total RNA was extracted from the synovium of rats in the two groups. The gene expression profile of each sample was analyzed using Illumina oligonucleotide microarray. RESULTS: Compared with the model group, after the intervention of WJR, 222 differentially expressed genes were identified in CIA rats, including 76 genes up-regulated (such as RatNP-3b and so on) and 146 downregulated (such as Angptl 2, Muc1, bcl-2, and so on). The differential genes were mainly involved with apoptosis, angiopoietin, defensin gene, cytokine, signal transduction, oncogene, etc. CONCLUSION: WJR played a role in treating CIA multi-target possibly through regulating and controlling multiple genes expressions. Wenhua Juanbi Recipe; collagen-induced arthritis; synovium; gene expression

[Preliminary study on identification of oil products using laser-Raman fingerprint spectrum].

Laser-Raman spectroscopy technology was used for measuring and analyzing properties of oil products. Through comparing with the Raman shifts and relative Raman intensity ratios of the main fingerprint peaks, different kinds of oil products were identified successfully. Furthermore, the Raman spectra of the same type of petroleum products obtained from different private gas stations were measured and the petroleum qualities were detected. The favorable results were obtained in both oil identification and quality test. The present work provides a feasible method for quick, sensitive and nondestructive identification of oil products.

A Comparative Analysis of Femoral Neck System and Three Cannulated Screws Fixation in the Treatment of Femoral Neck Fractures: A Six-Month Follow-Up.

OBJECTIVE: To investigate the efficacies of Femoral Neck System (FNS) and the three cannulated screws fixation (3CS) as therapeutic options for femoral neck fractures. METHOD: This was a retrospective study involving 69 patients (26 males and 43 females; mean age of 54.9 years (range, 28-66 years)) subjected to either FNS or 3CS for femoral neck fracture therapy. These patients were treated in our hospital from October 2019 to May 2020. Patient follow up was done at 1, 2, 3 and 6 months. During the short-term (6 months) follow-up period, surgical procedures for the two groups and incidences of complications were analyzed. Perioperative parameters were recorded and analyzed. Postoperative hip joint functions were measured and compared using the Harris score. The assessed perioperative parameters included surgical time, hemoglobin loss, fluoroscopy duration, hospitalization length and hospitalization cost. The main complications at last follow-up (6 months) included varus tilting, femoral neck shortness, and implant removal. RESULTS: Differences in the number of patients, age, Garden type of fracture and time from injury to surgery between the two groups were not significant (P > 0.05). With regards to perioperative parameters, compared to 3CS, FNS treatment performed better in surgical time (60.00 ± 12.44 vs 76.81 ± 13.10 min, P = 0.000), blood loss (13.67 ± 8.02 vs 16.58 ± 4.16 g/L, P = 0.059) and fluoroscopy time (39.73 ± 9.57 vs 58.14 ± 9.15 s, P = 0.000). Differences in hospitalization length and cost between the groups were not significant (P > 0.05). During the whole follow-up period, all patients did not exhibit dysfunction, pulmonary embolism or even death as a result of long-term immobilization of affected limbs. Surgical incisions for all patients healed well without infections. During the 6-month follow-up period, the FNS group exhibited a higher Harris score (84.61 ± 3.42 vs 78.67 ± 3.72, p = 0.000). In addition, treatment-associated complications (FNS vs 3CS) included femoral neck varus tilt (3.03% vs 11.11%), femoral neck shortness (6.06% vs 13.89%), and implant removal (0% vs. 13.89%). Implant removal rate for the FNS group was significantly less than that of the 3CS group (P = 0.026). Differences in incidences of femoral neck varus tilt (P = 0.196) and femoral neck shortness (P = 0.282) between the two groups were not significant. However, the difference in number was significant (FNS group was less). CONCLUSION: FNS treatment is associated with a smaller surgical trauma, stronger stability, and reductions in post-operative complication incidences, therefore, it is a potential therapeutic option for femoral neck fractures.

Percutaneous Vertebroplasty with The Polymethyl Methacrylate - Gelatin Sponge Complex in the Treatment of Patients with Osteoporotic Vertebral Compression Fractures Accompanied by Superior Endplate Injuries.

AIM: To explore the clinical efficacy of percutaneous vertebroplasty (PVP) combined with the polymethyl methacrylate - gelatin sponge (PMMA-GS) complex in the treatment of patients with osteoporotic vertebral compression fractures (OVCFs) accompanied by superior endplate injuries. MATERIAL AND METHODS: A total of 77 OVCF patients with superior endplate injuries who were treated with PVP from January 2017 to December 2020 were retrospectively analyzed. The visual analogue scale (VAS) score, Oswestry disability index (ODI), and injured vertebral height ratio at one day (1d) before surgery, three days (3d) after surgery, and one year (1y) after surgery were compared between both groups. Besides, the surgical duration, PMMA(polymethyl methacrylate)injection volume, PMMA leakage rate, and adjacent vertebral fracture rate were compared between these two groups. RESULTS: Among these patients, there were 39 individuals treated with PVP combined with the PMMA-GS complex (the observation group) and 38 individuals treated with PVP (the control group). These patients in both groups completed the surgery successfully. There were no such complications as pulmonary embolism, hemopneumothorax, rib fracture, spinal cord nerve injuries, and vital organ injuries. In these two groups, the VAS score, ODI, and injured vertebral height ratio 1d before surgery were significantly different from those 3d and 1y after surgery (P 0.05). However, there was no significant difference in these indexes between both groups (P 0.05). There was no significant difference in the surgical duration and PMMA injection volume between both groups (P 0.05). However, the PMMA leakage rate and adjacent vertebral fracture rate in the observation group were significantly lower than those in the control group (P 0.05). CONCLUSION: Compared with traditional PVP, this therapy PVP combined with PMMA-GS complex in the treatment of OVCF patients with superior endplate injuries can effectively reduce the incidence of PMMA leakage and adjacent vertebral fracture rate.

The Trans-Superior Articular Process Approach Utilizing Visual Trephine: A More Time-Saving and Effective Percutaneous Endoscopic Transforaminal Lumbar Discectomy for Migrated Lumbar Disc Herniation.

AIM: To introduce, and to evaluate the efficacy of the trans-superior articular process (trans-SAP) approach utilizing visual trephine in percutaneous endoscopic transforaminal lumbar discectomy (PETLD) for migrated lumbar disc herniation. MATERIAL AND METHODS: This study included 98 patients, 50 patients were in trans-SAP PETLD group and 48 patients were in conventional PETLD group. Visual analogue scale (VAS), Oswestry disability index (ODI), gender, age, blood loss, operation time, the frequency of X-ray fluoroscopy and the percentage of highly migrated herniation were evaluated and compared between the trans-SAP PETLD and conventional PETLD group. RESULTS: In both trans-SAP PETLD and conventional PETLD group, VAS and ODI were decreased at postoperative 1 day and 3 months compared with preoperative (p < 0.001). What's more, the VAS and ODI of postoperative 3 months were lower than postoperative 1 day (p < 0.001). There was no difference in gender, age, blood loss after the operation, and VAS during operation between trans-SAP group and conventional group (p > 0.05). The blood loss during the operation of trans-SAP group was higher (p < 0.05), but the operation time and frequency of X-ray fluoroscopy were lower than conventional group (p < 0.001). Last, trans-SAP group had a higher percentage of highly migrated herniation (p < 0.001). CONCLUSION: Both the conventional way and trans-SAP approach can achieve excellent surgical results. But, in trans-SAP group, the operation time is shorter, and X-ray fluoroscopy is less. PETLD with visual trephine has more advantages in highly migrated herniation and maybe easier to be mastered by young surgeons.

Effect of Wenhua Juanbi Recipe () on expression of receptor activator of nuclear factor kappa B ligand, osteoprotegerin, and tumor necrosis factor receptor superfamily member 14 in rats with collagen-induced arthritis.

OBJECTIVES: To study the effect of Wenhua Juanbi Recipe (, WJR) on expression of receptor activator of nuclear factor kappa B ligand (RANKL), osteoprotegerin (OPG), and tumor necrosis factor receptor superfamily member 14 (TNFRSF14, also known as LIGHT) in rats with collagen-induced arthritis (CIA). METHODS: CIA rats were generated by subcutaneous injection of bovine collagen type-II at the tail base. Sixty CIA rats were randomly assigned (10 animals/group) to: model, methotrexate (MTX)-treated (0.78 mg/kg body weight), and WJR-treated (22.9 g/kg) groups. Healthy normal rats (n=10) were used as the normal control. Treatments or saline were administered once daily by oral gavage. Rats were sacrifificed at day 28 post-treatment and knee synovium and peripheral blood serum were collected. Toe swelling degree and expression of RANKL, OPG, and LIGHT were determined by Western blot and immunohistochemistry. RESULTS: Compared with the normal group, toe swelling degree was signifificantly increased in the model group (P<0.01). After treatment, toe swelling degree decreased signifificantly in the WJR and MTX groups compared with the model group (P<0.01). Compared with the normal group, expression of RANKL and LIGHT were signifificantly increased and OPG signifificantly decreased in peripheral blood and synovium of the model group (P<0.01). Conversely, RANKL and LIGHT expression were signifificantly reduced and OPG increased in the WJR and MTX groups compared with the model group (P<0.01). No statistically significant difference existed between WJR and MTX groups. CONCLUSION: WJR likely acts by reducing RANKL expression and increasing OPG expression, thus inhibiting RANKL/RANK interaction and reducing LIGHT expression, thereby inhibiting osteoclast formation/activation to block bone erosion.

[Response of photosynthesis and growth to weak light regime in different Adzuki bean (Vigna angularis) varieties].

In order to determine the adaptability of Adzuki beans as the interplanting crops in fruit yards, field and pot experimental treatments with full natural light and weak light (48% of full natural light) regimes were conducted to test the shade tolerance and physiological responses of three Adzuki bean varieties including Funan green Vigna angularis (FGVA), early-mature black V. angularis (EBVA) and late-mature black V. angularis (LBVA). The leaf photosynthetic characteristic parameters, photosynthetic pigment contents and the activity of RuBPCase were measured during the first bloom stage. The response of growth to weak light was likewise studied. The results showed that the photosynthetic characteristic parameters, i.e., the maximum net photosynthetic rate, light saturation point and light compensation point of the three Adzuki bean varieties under the weak light stress changed differently. The weak light stress induced the reduction of net photosynthetic rate, water use efficiency and RuBPCase activity of the three Adzuki bean varieties significantly. The contents of chlorophyll a and chlorophyll b in leaves of FGVA increased significantly, while Chl a/b and carotenoid content in the leaves decreased significantly after shading. But the other two varieties did not change obviously in photosynthetic pigments content after shading. The weak light changed the growth of the three Adzuki bean varieties, such as decreasing dry matter yield and dry matter accumulation efficiency, reducing root nodule and root-shoot ratio, debasing leaves quantity and leaf area index. The first bloom stage and maturing stage of FGVA advanced, while that of EBVA delayed under weak light. However, flowers were not strong enough to seed for LBVA under the weak light. In conclusion, according to the photosynthetic characteristics changes after shading, as well as the growth status, we concluded that the shade tolerance of the three Adzuki beans was ranked as FGVA>EBVA>LBVA.

Effect of qubi zhentong recipe on synovial gene expression in collagen-induced arthritis in rats.

OBJECTIVE: To investigate the effect of the Chinese medical formula Qubi Zhentong Recipe(, QZR) on the synovial gene expression profile in collagen-induced arthritis (CIA) rats. METHODS: Ten rats were randomly chosen from 60 rats as the control group, and the other 50 rats were used for the CIA models. The CIA model group was constructed by bovine injection of type II collagen through the rats' neck and tail. Twenty rats were randomly chosen from 34 successful CIA models and randomly assigned into two groups: the model group (n =10) and the QZR group (n=10). The QZR group was fed intragastrically with QZR 22.9 g/(kg·d) (10 times the clinical adult dose), and the CIA model group was given the same dose of normal saline. Both model and QZR groups were administered treatment once a day. Total RNA was collected from the knee joint synovium after 30 days. The change in gene expression profile was analyzed by a whole gene chip. RESULTS: A total of 76 genes showed a difference in expression between CIA model group and the control group; 35 genes were down-regulated and 41 were up-regulated. A total of 67 genes showed a difference in expression between the model group and the QZR group; 48 genes were down-regulated and 19 were upregulated. CONCLUSIONS: QZR may affect CIA by stimulating multiple genes and targets, which are related to oncogenes, apoptosis, metabolism, the immune system, ion channels, and transport proteins.

Expression of WNT-5a and ROR2 correlates with disease severity in osteosarcoma.

Osteosarcoma, a common malignancy primarily affecting children, generally has a poor prognosis. Novel diagnostic, prognostic and therapeutic markers are required to ameliorate the negative outcomes of this disease. We investigated two potential markers, WNT-5a and ROR2, which are hypothesized to dysregulate WNT signaling pathways to promote tumorigenesis in other types of cancer. We investigated WNT-5a and ROR2 expression using immunohistochemistry in 42 osteosarcoma and 12 osteochondroma specimens, and compared the expression of these proteins with one another as well as with clinicopathological parameters. WNT-5a was detected in 34/42 (81.0%) cases and ROR2 was detected in 31/42 (73.8%) cases, significantly higher than in osteochondroma (16.7 and 25.0%, respectively; both P<0.05). Expression of these proteins was positively correlated (r=0.552, P<0.05). Furthermore, expression of WNT-5a and ROR2 was both correlated with Enneking surgical stage and tumor metastasis (P<0.05), but not with patient gender, age or pathological type. Thus, WNT-5a and ROR2 were more highly expressed in more severe disease states, and therefore may play a coordinated role in the occurrence and progression of osteosarcoma.

Cadmium telluride quantum dots as pH-sensitive probes for tiopronin determination.

The pH-sensitive cadmium telluride (CdTe) quantum dots (QDs) were used as proton probes for tiopronin determination. Based on the fluorescence quenching of CdTe QDs caused by tiopronin, a simple, rapid and specific quantitative method was proposed. Under the optimal conditions, the calibration plot of ln(F(0)/F) with concentration of tiopronin was linear in the range of 0.15-20 microg mL(-1)(0.92-122.5 micromol L(-1)) with correlation coefficient of 0.998. The limit of detection (LOD) (3sigma/k) was 0.15 microg mL(-1)(0.92 micromol mL(-1)). The content of tiopronin in pharmaceutical tablet was determined by the proposed method and the result agreed with that obtained from the oxidation-reduction titration method and the claimed value.