AIM:To study effects of resveratrol on osteoprotegerin(OPG)and receptor activator of NF-?B ligand(RANKL)expression in femur of ovariectomized rats.METHODS:48 female SD rats(3 months old)were assigned into 6 groups randomly:sham-operated group(SHAM);ovariectomized group(OVX);17?-estradiol replacement therapy group(ERT,0.1 mg?kg-1?d-1,sc);high-dose resveratrol-treate group(RH,40 mg?kg-1?d-1,i.p.);middle-dose resveratrol-treated group(RM,20 mg?kg-1?d-1,i.p.);low-dose resveratrol-treated group(RL,10 mg?kg-1?d-1,i.p.).Except for SHAM group,rats in other groups were operated by bilateral ovariectomy.Administration started at the 8th day after operation and lasted 8 weeks.At the end of the 9th week after operation,all rats were sacrificed.The bone mineral density(BMD)and vitodynamics properties(including ELASTIC,M-STRESS,M-LORD and STIFFNESS)of femurs were measured.The expression of OPG and RANKL in femurs of rats were observed by immunohistochemical staining methods.RESULTS:Compared with OVX group,resveratrol treatment(40 mg?kg-1?d-1 and 20 mg?kg-1?d-1)increased expression of OPG in femurs while decreased expression of RANKL in ovariectmized rats.In RH,RM,and ERT group,BMD,ELASTIC,M-STRESS of femurs were higher than those of OVX group.CONCLUSION:Resveratrol increased expression of OPG in femur while decreased expression of RANKL in ovariectmized rats,which was probably one of mechanism that resveratrol improve osteoporosis.

AIM: To observe the effects of folic acid (FA) on antioxidant enzyme, nitric oxide synthase (NOS) and nitric oxide (NO) in ovariectomized (OVX) rats.METHODS: Forty three-month-old female SD rats were randomly divided into 5 groups:sham group, OVX group, diethylstilbestrol group (0.03 mg· kg-1· d-1), low-dose FA group (5 mg· kg-1· d-1) and high-dose FA group (20 mg· kg-1· d-1).Gastric gavage started 1 week after operation and lasted for 10 weeks.The rats in sham group and OVX group were given distilled water instead of FA as controls.At the end of the 10th week, the L5 vertebra and right femur were removed for determination of bone mineral density (BMD).The bone homogenates were made using the L3 and L4 vertebrae.The levels of the total antioxidant capacity ( TAC) , glutathione peroxidase ( GSH-Px) , malondialdehyde ( MDA ) , NOS and NO were detected in plasma and bone homogenates.RE-SULTS:Compared with sham group, the BMD levels in L5 vertebra and right femur and the levels of GSH-Px and NO in the plasma were all decreased.The levels of TAC, GSH-Px, NOS and NO in the bone homogenates were also decreased, while the MDA concentration was increased in OVX group (all P<0.01).Compared with OVX group, the levels of TAC, GSH-Px, NOS, NO and BMD of the L5 vertebra and right femur were all increased, while the MDA concentration was de-creased in high-dose FA group (all P<0.01).CONCLUSION:In female SD rats, ovariectomy leads to a significant re-duction of antioxidant enzyme, NOS and NO levels.Oxidative stress is possibly involved in the development of osteoporo-sis.Protection against osteoporosis by high-dose FA may be linked to improvement of antioxidant enzyme activity, the levels of NOS and NO as well as a reduction of oxidative stress in ovariectomized rats.

Objective To investigate the protective effect of folic acid(FA) on osteoporosis in ovariectomized(OVX) rats.Methods Forty three-month-old female SD Rats were divided into 5 groups, sham operation group, OVX group, diethylstilbestrol group(0.03mg·kg-1·d-1),low dose FA Group (5 mg·kg-1·d-1),and high dose FA group (20 mg·kg-1·d-1).Gastric gavage in each group was started from one week after being ovariectomized and lasted 10 weeks. Sham operation group and OVX group were treated with solvent. The rats were sacrificed at the end of 10th week after treatment. The total homocysteine(tHcy) in plasma, alkaline phosphatase(ALP), and tartrate-resistant acid phosphatase(TRACP) activity of bone homogenates were measured. The bone mineral density(BMD) and bone biomechanics were determined using L5 vertebrae and right femur. The bone tissue slices were made with L6 vertebrae and left femur and HE stained, and then the histomorphology was observed. Results Compared with sham operation group, plasma tHcy level was significantly increased(P＜0.01), BMD of lumbar vertebrae and femur was remarkedly decreased in OVX group(all P＜0.01). Plasma tHcy concentration was negatively correlated with lumbar BMD(r=-0.359, P=0.040). Plasma tHcy level in both groups treated with folic acid was significantly reduced(all P＜0.01). The ALP concentration in bone homogenates was higher, the TRACP concentration in bone homogenates was lower, and BMD and bone biomechanics of lumbar vertebrae and femur were increased in high dose FA group than those in OVX group(all P ＜0.01). Conclusions In OVX rats hyperhomocysteinemia existed and was involved in the development of osteoporosis. Folic acid could protect OVX rats from osteoporosis, due probably to improved homocysteine metabolism.

d, suggesting that the mutation rate of SDHB gene in sporadic Chinese patients with pheochromocytoma might be around 3%.

Objective To study serum levels of soluble intercellular adhesion molecule-1 (sICAM-1) and its correlation with accumulation degree of 99Tcm-MDP on bone and arthritis and to study the role of sICAM-1 in the diagnosis of patients with early RA. Methods Serum levels of sICAM-1 were measured by immunoenzymetic assay (ELISA). 99mTc-MDP scintigraphy was carried out for the same patients. The significant test between serum levels of sICAM-1 of three groups was performed with analysis of variance; Correlations between serum levels of sICAM-1 and index of semiquatitive 99Tcm-MDP were obtained using sperman's ranks correlation method. Results Compared with control group,serum levels of sICAM-1 were significantly higher in standard group (group A) (P<0.01) and non-standard group (group B) (P<0.05). No significant difference was found between group A and B(P>0.05). Serum levels of sICAM-1 were positively correlated with 99Tcm-MDP scintigraphy. Most patients of non-standard group and standard group showed visible medium-high uptake of 99Tcm-MDP. While control group had not obviously uptake of 99Tcm-MDP. Conclusion Serum levels of sICAM-1, semiquatitive 99Tcm-MDP scintigraphy, accumulation degree of radiopharmuceuutial on bone and arthritis are helpful for diagnosis of early rheumatoid arthritis and judge-ment of the clinical status and improvement of the prognosis.

Objective:To explore the effect of group education intervention strategy based on harmonious nursing theory on understanding and application of pelvic floor knowledge and exercise skills in first gestation women, so as to promote the early recovery of pelvic floor function in postpartum women.Methods:This study was a quasi-experimental study. A total of 80 first gestation women in the pregnant women′s school of the First Hospital of Shanxi Medical University were selected as the research objects, 40 women from April to May 2023 were involved in the control group and 40 women from June to July 2023 were involved in the intervention group. The control group was given routine health education, while the intervention group was given group educational nursing intervention based on harmonious nursing theory. The Primary Prevention of Female Pelvic Floor Dysfunction-self-care Ability Scale was used to evaluate and compare the primary prevention self-care ability of pelvic floor dysfunction among pregnancy 1-4 weeks between the two groups before and after pregnancy intervention. Pelvic floor muscle strength was measured and pelvic floor function exercise compliance was evaluated during outpatient follow-up at 42-49 days postpartum (hereinafter referred to as postpartum 42 days) to evaluate and compare the rehabilitation effect of pelvic floor skills exercise between the two groups at 42 days postpartum.Results:Finally, the control group was (29.97 ± 3.68) years old involved 38 cases, and the intervention group was (29.79 ± 3.66) years old involved 38 cases. There was no significant difference in self-care ability score of primary prevention of pelvic floor dysfunction between the two groups before intervention ( P>0.05). After pregnancy intervention, the scores of self-care knowledge, self-care responsibility, self-care skills, self-regulation and total score of the intervention group were (58.13 ± 6.46), (11.73 ± 1.18), (10.16 ± 0.86), (29.21 ± 2.74) and (109.21 ± 8.92) points, respectively, which were higher than the control group (47.76 ± 4.25), (11.05 ± 1.09), (8.82 ± 1.78), (27.34 ± 2.18), (94.97 ± 6.46) points, and the differences between the two groups were statistically significant ( t values were - 8.26 - - 2.63, all P<0.05). In the intervention group, the maximum value of the fast muscle stage and the mean value of the slow muscle stage of the comparison of pelvic floor muscle strength between the two groups 42 days after delivery were 48.25(44.75, 53.45)μV and 31.00 (27.33, 34.23) μV, respectively, which were higher than the control group 36.80 (32.25, 44.28) μV and 22.40 (19.28, 25.88) μV, the differences between the two groups were statistically significant ( Z = - 4.98, - 5.37, both P<0.01). There was no significant difference in the average value of the pre-resting stage and the average value of the post-resting stage between the two groups ( P>0.05). Comparison of pelvic floor functional exercise compliance between the two groups showed that in the intervention group, the proportion of good compliance was 73.7% (28/38), and the proportion of general compliance was 26.3% (10/38), while in the control group, the proportion of general compliance was 86.8% (33/38) and the proportion of good compliance was 7.9% (3/38). The difference between the two groups was statistically significant ( χ2 = 34.46, P<0.01). Conclusions:Application of the theory of harmonious nursing group educational nursing intervention was carried out on the first gestation women, can effectively improve the first gestation women during pregnancy pelvic floor functional exercise primary prevention self-care ability level, strengthen puerperal women pelvic floor muscle, improve the puerperal pelvic floor functional exercise adherence, coordination and optimization of the first gestation women early for pelvic floor functional rehabilitation nursing process.

Objective To explore the clinical effect of ribavirin combined with xuebijing on the treatment of patients with severe hemorrhagic fever with renal syndrome (HFRS).Methods Totally 61 patients with HFRS were randomly divided into two groups.The treatment group was treated with ribavirin and xuebijing,while the control group was treated with ribavirin.Results The descent speed of serum procalcitonin in the treatment group was significantly higher than the control group (P ＜ 0.05).The recovery time of platelet,the recovery time of serum creatinine,the time of Hypotension shock,oliguria time and polyuria time in the treatment group were significantly shorter than the control group (P ＜ 0.05).Conclusion The clinical efficacy of ribavirin combined with xuebijing is better than single application of ribavirin in the treatment of patients with HFRS.

Objective To explore the clinical effect of ribavirin combined with xuebijing on the treatment of patients with severe hemorrhagic fever with renal syndrome (HFRS).Methods Totally 61 patients with HFRS were randomly divided into two groups.The treatment group was treated with ribavirin and xuebijing,while the control group was treated with ribavirin.Results The descent speed of serum procalcitonin in the treatment group was significantly higher than the control group (P ＜ 0.05).The recovery time of platelet,the recovery time of serum creatinine,the time of Hypotension shock,oliguria time and polyuria time in the treatment group were significantly shorter than the control group (P ＜ 0.05).Conclusion The clinical efficacy of ribavirin combined with xuebijing is better than single application of ribavirin in the treatment of patients with HFRS.

Objective To compare simulated training of "45° tilting insertion" and the "dynamic scan" needling under B ultrasound.Methods Fifty volunteer residents and visiting physicians worked in the anesthesiology department in Peking Union Medical College Hospital were recruited to attend the simulated needling training.The insertion time,insertion attempts until success,numbers of success while advancing the needle and numbers of needle tip visible upon success were re corded.The degree of difficulty and safety of the techniques,the confidence of performing the techniques,the clinical usefulness of the techniques and the training effect were evaluated among the volunteers.Results There were no differences in the insertion time,numbers of successful insertion while advancing the needle and numbers of needle tip visible upon success between the two techniques.Compared with "45° tilting insertion" technique,"dynamic scan" resulted in less needle redirection times and a higher first-attempt successful rate,and got higher scores in terms of difficulty and safety (P＜0.05 or P＜0.01).The confidence scores of performing the two technique were similar.20 (40％) volunteers chose to use "dynamic scan",8 (16％) chose to use "45° tilting insertion" and 22 (440％) chose to use both technique in their clinical work.100％ of them considered the training was greatly helpful or helpful.Conclusion The technique of "dynamic scan" produced a higher first-attempt successful rate and was easier and safer than "45° angle insertion".The combination of the two techniques might be a new technique that is worth trying.

Objective To examine the impact and partial mechanism of bupivacaine sustained-release drug(code PB21)in combination with low-dose dexamethasone(Dex)on the analgesic time of rats with knee osteoarthritis(KOA).Methods Using the techniques of anterior cruciate ligament transection and meniscus instability,a rat KOA model was created.After eight weeks,SD mice were split into three groups at random:a group for the model,one for Dex(50 μg),one for PB21(1.5 mg),and one for combined administration(1.5 mg PB21/50 μg Dex),with a control group that received a sham operation.The pain thresholds of KOA rats were measured using a Pres-sure Application Measurement(PAM)at different intervals before to delivery and 4,24,36,and 48 hours following administration;to gauge changes in discomfort,a CatWalk was used to assess the rats'average foot strength and maximum contact area before,four,twenty-four,and forty-eight hours after treatment.A portion of the rats were put to sleep at four,twenty-four,and forty-eight hours following the injection,and the joint synovium was removed for paraffin sectioning.Immunohistochemistry was used to identify the expression of GAP43 in the synovium,whereas immunofluorescence was used to identify the expression of CGRP in the same tissue.Results The average strength and maximum contact area of the foot and claw decreased(P＜0.01),and the pain threshold decreased(P＜0.01)in the model group compared to the sham operation group.The PB21+Dex group experienced a delayed pain threshold lowering time delay when compared to the PB21 and Dex treatment groups alone.Up to 48 hours lat-er,the combination administration group's average strength and maximum contact area of the foot paw remained ele-vated,and there was a statistically significant difference(P＜0.05)between the combined administration group and PB21 and Dex alone.GAP43 and CGRP expression levels in synovial tissue were detected.The results indica-ted that PB21 and Dex alone could lower protein expression levels at 4 and 24 h at the two time points,and that the PB21+Dex group could still significantly lower GAP43 and CGRP expression levels at 48 h.At the 48 h time point,the PB21+Dex group was statistically significant when compared to the PB21 and Dex alone administration group(P＜0.05).Conclusion In summary low dose dexamethasone can prolong the analgesic effect of PB21 on KOA rats,which is connected to reducing the expression of pain related proteins CGRP and GAP43.