AIM:To investigate the effect of Bushen formulae(BHF)on bone metabolism and its possible mechanism in ovariectomized rats with high salt intake.METHODS:According to the random number table method,80 SPF-grade Sprague-Dawley rats were divided into sham group,ovariectomy(OVX)group,medium-high-salt diet(MSD)group,high-salt diet(HSD)group,BHF group,BHF with normal saline(BHF+NS)group,BHF+MSD group,and BHF+ HSD group,with 10 rats in each group.After modeling,different diets and BHF formula interventions were administered,and the concentrations of sodium chloride added to MSD group and HSD group were 2%(w/w)and 8%(w/w),respective-ly.The dose of BHF was 7.8 g·kg-1·d-1,once a day,and the treatment lasted for 12 weeks.Bone density,bone microar-chitecture,bone parameters,bone metabolism biomarkers,bone histopathological changes,the expression of epithelial sodium channel α(ENaCα),Na-Cl cotransporter(NCC),and voltage-gated chloride channel 3(ClC-3)proteins in bone tissue were detected in each group.RESULTS:Compared with sham group,the rats in OVX group had reduced bone density and destroyed bone microstructure.Compared with OVX group,the bone microstructure in MSD and HSD groups was more significantly damaged,while the levels of bone formation markers,bone glycoprotein(BGP)and type Ⅰ procolla-gen N-terminal peptide(PINP),were significantly increased in HSD group(P<0.05).Moreover,the levels of bone re-sorption markers,such as amino-terminal cross-linked telopeptides of type Ⅰ collagen(NTX),carboxy-terminal cross-linked telopeptides of type Ⅰ collagen(CTX)and tartrate-resistant acid phosphatase(TRACP),were significantly in-creased(P<0.05),indicating that bone metabolism was in high-conversion state.High-salt diet accelerated the structural destruction of bone trabeculae,and Western blot results showed that high-salt diet caused decreases in the protein expres-sion levels of ENaCα and ClC-3 and an increase in the protein expression level of NCC in femoral tissues(P<0.05).After BHF intervention,the expression of relevant ion channels caused by high salt could be regulated to different degrees.CONCLUSION:Bushen formulae could differentially regulate the expression of relevant ion channels ENaCα,ClC-3,and NCC induced by high salt to different degrees,which has certain ameliorative and therapeutic effects on the imbalance of bone metabolism.

Objective: To evaluate 3D imaging technology in the preoperative evaluation of breast conserving surgery. Methods: A ret-rospective analysis was conducted using clinical data from 38 patients who underwent breast conserving surgery that was assisted by 3D imaging technology in Xiaogan Hospital Affiliated to Wuhan University of Science and Technology from April 2017 to January 2019. All 38 patients underwent 3.0-T breast magnetic resonance imaging (MRI) examination before surgery, and 3D reconstruction of virtu-al images was constructed through 3D modeling of medical digital imaging and communication (DICOM) data. The predicted resected tissue volume was compared with the volume of the actual resected specimen, and the surgical margin and postoperative aesthetics of the breast conserving surgery were evaluated. Results: The reconstructed 3D model clearly displayed the anatomical structures of the breast, tumor, gland, and blood vessels, and their relationship in 3D spaces. The goodness of fit of the 3D model to the practical sit-uation was 97.4% (37/38). In terms of the resection tissue volume, there was no significant difference between the predicted results (PRTV) and actual results (ARTV) [(61.7 ± 20.1) mL vs. (65.1 ± 20.7) mL, P>0.05]. There was a strong positive correlation between ARTV and PRTV (P<0.01). One patient underwent supplementary secondary surgery, resulting in an incidence of 2.6% (1/38). The postopera-tive satisfaction for breast conserving surgery was 100% (38/38). Conclusions: 3D imaging technology clearly displays the anatomical relationship between breast tumor and surrounding tissues, and correctly assesses breast volume, guiding surgical resection.

Objective To evaluate the safety and efficacy of botulinum toxin type A for injection in the treatment of post-stroke upper limb spasticity (dosage was 200 U,or 240 U if combined with thumb spasticity).Methods The study was a multi-center,stratified block randomized,double-blind,placebocontrolled trial.All the qualificd subjects were from 15 clinical centers from September 2014 to February 2016.They were randomized (2∶1) to injections of botulinum toxin type A made in China (200-240 U;n =118) or placebo (n =60) in pivotal phase after informed consent signed.The study was divided into two stages.The pivotal trial phase included a one-week screening,12-week double-blind treatment,followed by an expanded phase which included six-week open-label treatment.The tone of the wrist,finger,thumb flexors was assessed at baseline and at weeks 0,1,4,6,8,12,16 and 18 using Modified Ashworth Scale (MAS),disability in activities of daily living was rated using the Disability Assessment Scale and impaction on pain,muscle tone and deformity was assessed using the Global Assessment Scale.The primary endpoint was the score difference between botulinum toxin type A and placebo groups in the tone of the wrist flexor using MAS at six weeks compared to baseline.Results Muscle tone MAS score in the wrist flexor of botulinum toxin type A and placebo groups at six weeks changed-1.00 (-2.00,-1.00) and 0.00 (-0.50,0.00) respectively from baseline.Botulinum toxin type A was significantly superior to placebo for the primary endpoint (Z =6.618,P ＜ 0.01).The safety measurement showed 10 subjects who received botulinum toxin type A had 13 adverse reactions,with an incidence of 8.47％ (10/118),and three subjects who received placebo had three adverse reactions,with an incidence of 5.00％ (3/60) during the pivotal trial phase.All adverse reactions were mild to moderate,none serious.There was no significant difference in adverse reactions incidence between the botulinum toxin type A and the placebo groups.During the expanded phase three subjects had four adverse reactions and the incidence was 1.95％.All adverse reactions were mild,none serious.Conclusion Botulinum toxin type A was found to be safe and efficacious for the treatment of post-stroke upper limb spasticity.Clinical Trial Registration:China Drug Trials,CTR20131191

AIM:To investigate the effect of Shenci capsule combined with cisplatin ( DDP) in reversing DDP resistance by PI3K/AKT/mTOR signaling pathway in nude mice bearing A 549/DDP tumor.METHODS:The patient-de-rived lung adenocarcinoma A 549/DDP cell xenograft model was established .The tumor-bearing nude mice were randomly divided into control group , Shenci capsule group , DDP group and Shenci capsule combined with DDP group .The mice in control group was treated with normal saline , while the mice in other groups were treated with different drugs for 21 d.After treatment, the mice were killed and lung cancer tissues were collected .Flow cytometry was used to analyze the cell cycle and apoptosis.FQ-PCR was used to determined the mRNA levels of PTEN , P-glycoprotein, PI3K, AKT and mTOR in A549/DDP lung tumor .RESULTS:Compared with control group , the cell proliferation in all the drug treatment groups was inhibited .Compared with other drug treatment groups , Shenci capsule combined with DDP blocked the cell cycle of A 549/DDP cells at G2/M phase, promoted the apoptosis rate , increased the mRNA expression of PTEN and inhibited the mRNA expression of P-glycoprotein, PI3K, AKT and mTOR.CONCLUSION:Shenci capsule increases the sensitivity of A 549/DDP resistant cells in nude mice to DDP by blocking PI 3K/AKT/mTOR signaling pathway , increasing the expression of PTEN or inhibiting P-glycoprotein-mediated resistance pathway .

Background Researches showed that microperimetry can exhibit more tiny visual function damage than conventional perimetry in glaucomatous eyes.However,the study on fixation stability of glaucoma is still rare until now.Objective This study was to compare the correlation between microperimetry Maia (Macular Integrity Assessment) and Humphrey perimetry,and to investigate the changes of the fixation stability in glaucoma patients with hemifield defect.Methods This study proposal was approved by Medical Ethic Committee of Peking University First Hospital.A cross-sectional study was performed under the informed consent of each subject.Thirtyfive eyes of 35 glaucoma patients with hemifield defect by 24-2 Humphrey perimetry were included in Peking University First Hospital from December 2013 to March 2014,and 30 eyes of 30 normal volunteers served as controls.Both Humphery (10-2) and Maia (expert 10-2) were performed on the subjects respectively and the correlation of the results between Humphery (10-2) and Maia (expert 10-2) were analyzed.Then the patients with normal hemifield on Humphrey were assigned to Maia normal group and Maia abnormal group.Fixation stability differences were compared between glaucoma group and normal control group,and between Maia normal group and Maia abnormal group.Results The moderately positive correlation was found in the mean sensitivity between Maia microperimetry and Humphrey perimetry (r=0.403,P =0.001),and the average threshold of Maia microperimetry was moderately positive correlated with the mean defect (MD) of Humphrey perimetry in glaucoma patients (r=0.438,P =0.008).The fixation stability parameter P1 was (67±17)％ and (87±10)％,and that of P2 was (70±16)％ and (88±9)％;the 63％ bicurve elipse area (BCEA) was (5.08±1.55) °2and (2.21±0.60) °2,and the 95％ BCEA was (14.74± 6.04) °2 and (2.86 ± 1.17)°2 in the glaucoma group and normal control group,respectively,showing significant decreases of P1 and P2 and increases of 63％ BCEA and 95％ BCEA in the glaucoma group compared with the normalcontrol group (t=-5.604,-4.831,9.885,11.086,all at P=0.000).In Maia normal group and Maia abnormal group,the P1 was (79±8)％ and (63±17)％,the P2 was (81±10)％ and (67±16)％,the 63％ BCEA was (3.19±0.65)°2 and (5.70±1.22)°2 and the 95％ BCEA was (9.10±2.60)°2 and (19.35±5.01)°2,respectively.Compared with the Maia normal group,the P1 and P2 were significantly lower,and 63％ BCEA and 95 ％ BCEA were higher in the Maia abnormal group (t=-2.468,P=0.019;t=-2.371,P=0.024;t =5.514,P=0.000;t=5.575,P=0.000).Conclusions Maia microperimetry and Humphrey perimetry yield a good correlation for glaucomatous macular function examination.In addition,Maia microperimetry showed that fixation stability decreased in glaucoma patients with hemifield defect.

Objective To investigate the effect of hydrochloric acid (HCl) stimulation and mechanical stretch on epithelial-mesenchymal transition (EMT) and hyaluronan (HA) production in human lung epithelial cells. Methods Human lung epithelial cell line BEAS-2B was cultured in vitro, which was divided into phosphate-buffer saline (PBS) + static group, HCl + static group, PBS + stretch group, and HCl + stretch group respectively in the logarithmic phase. The BEAS-2B cells in two stretching groups were challenged by cyclic stretch with 20% amplitude, frequency of 0.33 Hz, sine wave of the FX-5000T system for 48 hours. The morphology changes in cells before and after stretch were observed with inverted microscope. The protein expressions of epithelial markers E-cadherin and cytokeratin-8 (CK-8) as well as mesenchymal markers vimentin and α-smooth muscle actin (α-SMA) were determined by Western Blot. The secretion of HA was determined by enzyme linked immunosorbent assay (ELISA). Results ① It was shown by microscopic observation that BEAS-2B cells displayed cobblestone morphology, linked closely and cell polarity in PBS + static group, which did not change obviously after HCl stimulation alone. Given purely mechanical stretch after 48 hours, the cells morphology changed from cobblestone shape into long spindle, and increased intercellular space obviously. Double hit of HCl and stretch changed the cells morphology more significantly. ② It was shown by Western Blot that compared with the PBS + static group, HCl alone or combined with purely mechanical stretch after 48 hours, the expressions of E-cadherin and CK-8 were decreased, while those of vimentin and α-SMA were increased, and it was more pronounced in HCl + stretch group [the expression quantity (gray value) as base 1 in PBS + static group, E-cadherin: 0.16±0.08 vs. 1, CK-8: 0.10±0.03 vs. 1, vimentin: 3.35±0.38 vs. 1, α-SMA: 3.10±0.45 vs. 1, all P < 0.01]. ③ It was shown by ELISA that both HCl stimulation and stretch could induce BEAS-2B cells secreting HA as compared with PBS + static group (μg/L: 55.763±0.687, 63.005±0.493 vs. 49.876±1.867), and the production of HA increased more remarkably after double hit (μg/L: 78.220±1.085 vs. 49.876±1.867, P < 0.01). Conclusions Both HCl and mechanical stretch could induce EMT and increase HA secretion in human lung epithelial cells in vitro. Double hit of HCl stimulation and mechanical stretch induced EMT apparently, and further increased the production of HA.

Objective To summarize the clinical characters,diagnosis and surgical treatment of primary hyperparathyoidism (PHPT).Methods The diagnosis,treatment and efficacy of 35 cases of PHPT were retrospectively reviewed.Results PHPT presented a variety of clinical manifestations,and occoured to different age groups without significant gender differences.All the 35 cases had elevated blood calcium and PTH.All patients underwent preoperative ultrasonography and 99Tcm-MIB imaging,and the positive rates were 68.6％ and 97.1％ respectively.34 patients received surgical treatment,among whom 30 cases had parathyroid adenoma,1 case had parathyroid hyperplasia and 3 cases had parathyroid carcinoma.Through operation,31 cases were cured,2 cases improved,and 1 case of parathyroid carcinoma suffered from lung metastasls.Conclusions PHPT can be diagnosed according to co-elevated serum calcium and PTH.Ultrasonography combined with 99Tcm-MIB imaging should be recommend for preoperative localization.The main cause of PHPT is solitary parathyroid adenoma.PTPT can be cured by surgery.Minimally invasive parathyroidectomy with accurate location is an efficient surgical strategy,and the prognosis is favorable.

Objective To investigate and analyse the current situation and the factors impacting nursing soft skills in order to provide targeted advice to improve students′ nursing soft skills .Methods Totally 1 000 student nurses were investigated by the nursing soft skills scale and the self‐designed questionnaire .Results First ,there was no differences between the nursing soft skill of students and the national new nurses(P> 0 .05) .But the students′ organizational management and cognitive skills were lower than that of national new nurses(P< 0 .05) .Second ,class leader ,familiarity and fancy for nursing science were the main factors impac‐ting nursing soft skills(P< 0 .05) .Third ,the students′ organizational management and cognitive skills had an increasing trend fol‐lowing the extent of familiarity and fancy for nursing science(P< 0 .05) .Conclusion Education management institution and nursing schools should try to make some reform mearsure to improve students′ nursing soft skills .

Objective To generate the erythroid differentiation associated gene(EDAG) knockout mice and analyze their sensitivity to low dose radiation-induced damage.Methods Zinc finger nuclease technology ( ZFNs ) was used to produce the EDAG knockout mice.The low dose radiation-induced damage was evaluated by peripheral blood cell counts, DNA damage and colony formation of bone marrow cells.Wild-type and EDAG knockout mice were irradiated with 0.31 Gy/min X-ray, one minute per day for seven consecutive days, and the cumulative radiation dose was 2.17 Gy(n=7).The blood cell counts were measured by an automated hemocytometer.DNA damage was detected by immunofluorescence assay with a DNA damage marker p-H2A.x antibody (n=3).The colony formation ability of bone marrow cells was evaluated with a semi-solid culture medium(n=3).Results A model of EDAG knockout mice was established.Compared to wide type mice, white blood cell counts of EDAG knockout mice decreased significantly while the DNA damage marker p-H2A.x expression was increased on the third day after X-ray irradiation.The ability of colony-forming was reduced after 7 days of X-ray irradiation.Conclusion Our present study found that EDAG knockout mice are more sensitive to low dose radiation-induced damage as shown by decreased peripheral blood cells counts, reduced colony-forming ability of bone marrow cells, and increased DNA damage.These results suggest that EDAG knockout mice can serve as a powerful tool for evaluation of the biological effects of low-dose radiation damage.

Photoautotrophic cultivation with heterotrophic cells as seeds (heterotrophic cells/photoautotrophic cultivation) is an effective way for the development of microalgal biofuel, but its development potential from the point of process optimization has not been investigated in literatures. To evaluate this, the optimizations of medium and culture conditions for Chlorella ellipsoidea were studied. In the heterotrophic stage, the biomass concentration reached 11.04 g/L with the optimized medium in flask, which were 28.0% higher than that with the original medium, and the biomass concentration reached 73.89 g/L in 5-L fermenter. In the photoautotrophic stage, the culture medium and conditions were studied in a 2-L column photobioreactor. The maximum biomass concentration, lipid content and lipid productivity reached 1.62 g/L, 36.34% and 6.1 mg/(L·h) under the optimal photoautotrophic conditions. The lipids were mainly composed of C16-C18 fatty acids, which were raw material suitable for biodiesel. After optimization, heterotrophic cells/photoautotrophic cultivation can significantly improve the capacity of biofuel production by Chlorella ellipsoidea, this method is also expected to be an efficient way for the cultivation of other microalgae that can grow heterotrophically.
Biofuels ; Biomass ; Cell Culture Techniques ; Chlorella ; metabolism ; Culture Media ; Fatty Acids ; biosynthesis ; Heterotrophic Processes ; Lipids ; biosynthesis ; Photobioreactors