Related factors and prediction model for neurological outcome of dance-associated pediatric spinal cord injury without radiographic abnormality / 中国康复理论与实践

ObjectiveTo investigate the neurological outcome of children with dance-associated spinal cord injury without radiographic abnormality (SCIWORA) and explore its related factors and predictive model. MethodsFrom July, 2012 to January, 2022, 75 children with dance-associated SCIWORA hospitalized in Beijing Bo'ai Hospital were divided into improved group (n = 14) and non-improved group (n = 61) according to the American Spinal Injury Association Impairment Scale (AIS) grade a year later, and the related factors were analyzed. ResultsAll patients were girls aged four to ten years. Most of them were complete spinal cord injuries (52/75, 69%). The time of injury to rehabilitation (OR = 0.926, P = 0.046, 95%CI 0.858 to 0.999), the existing tendon reflex (OR = 46.915，P = 0.012, 95%CI 2.333 to 943.616) and muscle tension (OR = 8.932，P = 0.044，95%CI 1.063~75.067) were correlated with the AIS grade improvement. The combination of time of injury to rehabilitation, tendon reflex and muscle tone existing may predict the improvement of AIS (AUC = 0.953, P < 0.001，95%CI 0.878 to 0.989), the sensitivity and specificity were 100% and 83.61%, respectively. ConclusionThe neurological outcome of children with dance-associated SCIWORA is poor. Rehabilitation training as soon as possible is beneficial to the neurological recovery. Tendon reflexe and muscle tone existing at admission are closely related to improvement of neurological outcome, which could be used as potential indicators.

Construction of cell factories for production of patchoulol in Saccharomyces cerevisiae / 中国中药杂志

Patchoulol is an important sesquiterpenoid in the volatile oil of Pogostemon cablin, and is also considered to be the main contributing component to the pharmacological efficacy and fragrance of P. cablin oil, which has antibacterial, antitumor, antioxidant, and other biological activities. Currently, patchoulol and its essential oil blends are in high demand worldwide, but the traditional plant extraction method has many problems such as wasting land and polluting the environment. Therefore, there is an urgent need for a new method to produce patchoulol efficiently and at low cost. To broaden the production method of patchouli and achieve the heterologous production of patchoulol in Saccharomyces cerevisiae, the patchoulol synthase(PS) gene from P. cablin was codon optimized and placed under the inducible strong promoter GAL1 to transfer into the yeast platform strain YTT-T5, thereby obtaining strain PS00 with the production of(4.0±0.3) mg·L~(-1) patchoulol. To improve the conversion rate, this study used protein fusion method to fuse SmFPS gene from Salvia miltiorrhiza with PS gene, leading to increase the yield of patchoulol to(100.9±7.4) mg·L~(-1) by 25-folds. By further optimizing the copy number of the fusion gene, the yield of patchoulol was increased by 90% to(191.1±32.7) mg·L~(-1). By optimizing the fermentation process, the strain was able to achieve a patchouli yield of 2.1 g·L~(-1) in a high-density fermentation system, which was the highest yield so far. This study provides an important basis for the green production of patchoulol.

Clinical study on modified Huatan Tongluo Decoction combined with acupoint massage for the patients with acute ischemic stroke / 国际中医中药杂志

Objective:To evaluate the efficacy of modified Huatan Tongluo Decoction combined with acupoint massage in the treatment of acute ischemic stroke (AIS).Methods:A total of 83 patients with AIS, who met the inclusion criteria in the hospital between January 2020 and January 2021, were randomly divided into the control group ( n=41) and the observation group ( n=42). The control group received conventional western medicine treatment, and the observation group adopted modified Huatan Tongluo Decoction combined with acupoint massage therapy on the basis of the control group. Both groups were treated for 2 weeks. The TCM symptoms were scored before and after treatment. The National Institutes of Health Stroke Scale (NIHSS) was used to evaluate the degree of neurological deficit and Modified Barthel Index (MBI) was used for the evaluation of daily living ability of patients. The Serum levels of Ischemia Modified Albumin (IMA), matrix metalloproteinase-9 (MMP-9) and growth differentiation factor-15 (GDF-15) were detected by ELISA, and the clinical efficacy was evaluated. Results:The total effective rate was 92.9% (39/42) in observation group and that in the control group was 75.6% (31/41) ( χ2=4.67, P=0.031). After treatment, the scores of unconsciousness, consciousness trance, numbness and weakness, deviation of the eye and mouth and hemiplegia in observation group were significantly lower than those in the control group ( t=2.18, 3.11, 2.80, 2.07, 2.24, all Ps<0.05), and the NIHSS score was significantly lower than that of the control group ( t=2.58, P=0.012) while the MBI score was significantly higher than that of control group ( t=2.59, P=0.011). After treatment, the levels of serum IMA [(67.05±8.34) mg/L vs. (71.48±8.52) mg/L, t=2.39], MMP-9 [(100.72±12.49) ng/L vs. (107.66±13.05) ng/L, t=2.48] and GDF-15 [(438.16±43.20) ng/L vs. (461.93±44.19) ng/L, t=2.48] in observation group were significantly lower than those in the control group ( P<0.05). Conclusion:The modified Huatan Tongluo Decoction combined with acupoint massage can relieve the clinical symptoms and brain damage degree, improve the neurological function and living ability, and enhance the clinical efficacy of patients with AIS.

Quality value transfer of substance benchmarks in Huanglian Decoction / 中国中药杂志

Following the preparation of substance benchmarks in Huanglian Decoction from 18 batches, the method for detecting their characteristic spectra was established to identify the similarity range and peak attribution. The content and transfer rate ranges of the index components coptisine, palmatine, berberine, liquiritin, glycyrrhizic acid, 6-gingerol, and cinnamaldehyde and the extraction amount were combined for analyzing the quality value transfer from the Chinese medicinal pieces to substance benchmarks and clarifying the key quality attributes of substance benchmarks in Huanglian Decoction. The results showed that the substance benchmarks in Huang-lian Decoction of 18 batches exhibited good similarity in characteristic spectra(all greater than 0.98). There were 17 characteristic peaks identified in the substance benchmarks of Huanglian Decoction, including 10 from Coptidis Rhizoma, 3 from Glycyrrhizae Radix Et Rhizoma Praeparata Cum Melle(processed with water), 1 from Zingiberis Rhizoma, and 3 from Cinnamomi Ramulus. The contents and average transfer rates of the index components were listed as follows: coptisine 2.20-6.46 mg·g~(-1) and 18.50%±2.93%; palmatine 3.03-8.13 mg·g~(-1) and 26.56%±4.69%; berberine 7.71-22.29 mg·g~(-1) and 17.34%±3.00%; liquiritin 0.88-2.18 mg·g~(-1) and 9.88%±4.88%; glycyrrhizic acid 1.83-4.44 mg·g~(-1) and 8.50%±3.72%; 6-gingerol 0.56-1.43 mg·g~(-1) and 11.36%±2.37%; cinnamaldehyde 1.55-3.48 mg·g~(-1) and 19.02%±4.36%. The extraction amount of the substance benchmarks from the 18 batches was controlled at 10.65%-13.88%. In this paper, the quality value transfer of substance benchmarks in Huanglian Decoction was analyzed based on the characteristic spectra, the index component contents and the extraction amount, which has provided a basis for the subsequent development of Huanglian Decoction and the quality control of its related preparations.

TLR8 in the Trigeminal Ganglion Contributes to the Maintenance of Trigeminal Neuropathic Pain in Mice / 神经科学通报·英文版

Trigeminal neuropathic pain (TNP) is a significant health problem but the involved mechanism has not been completely elucidated. Toll-like receptors (TLRs) have recently been demonstrated to be expressed in the dorsal root ganglion and involved in chronic pain. Here, we show that TLR8 was persistently increased in the trigeminal ganglion (TG) neurons in model of TNP induced by partial infraorbital nerve ligation (pIONL). In addition, deletion or knockdown of Tlr8 in the TG attenuated pIONL-induced mechanical allodynia, reduced the activation of ERK and p38-MAPK, and decreased the expression of pro-inflammatory cytokines in the TG. Furthermore, intra-TG injection of the TLR8 agonist VTX-2337 induced pain hypersensitivity. VTX-2337 also increased the intracellular Ca

Clinical efficacy of morcellator assisted by transurethral bipolar plasmakinetic enucleation and resction of the prostate in the treatment of benign prostatic hyperplasia / 国际外科学杂志

Objective:To explore the clinical efficacy of morcellator assisted by transurethral bipolar plasmakinetic enucleation and resction of the prostate in the treatment of benign prostatic hyperplasia.Methods:A total of 90 patients with benign prostatic hyperplasia treated in the Department of Urology, Shenyang Fifth People′s Hospital from Apirl 2020 to Apirl 2021 were retrospectively analyzed. They were divided into the experimental group ( n=50) and the control group ( n=40) according to different sugical methods. Among them, patients underwent transurethral plasma anatomical prostatectomy with the aid of morcellator in the experimental group, patients of the control group underwent plasma prostatectomy. The operation time, intraoperative blood loss, the decrease in hemoglobin, postoperative catheter retention, hospitalization time, international prostate symptom score (IPSS) of 3 months after surgery, quality of life score (QOL), maximum urine flow rate(Qmax), residual urine volume (PVR), surgical complications and other related indicators in the two groups were compared. Measurement data were expressed as mean±standard deviation ( Mean± SD), comparison between groups was by t-test; comparison of count data between groups was by Chi-square test. Results:Both groups were successfully treated by transurethral surgery. There were significant difference in the amount of blood loss [(62.11±5.32) mL vs (95.12±10.32) mL], the total operation time[(40.25±12.75) min vs (72.1±13.41) min], postoperative catheter retention[(3.02±0.41) d vs (4.73±1.32) d], hospitalization time[(4.03±0.41) d vs (6.52±0.85) d], the decrease in hemoglobin[(2.65±0.52) g/L vs (4.21±0.85) g/L]( P<0.05); there was no significant difference in the IPSS score(7.36±3.26 vs 8.12±3.56), QOL(2.12±0.32 vs 2.32±0.21), Qmax[(15.47±4.53) mL/s vs (16.23±3.21) mL/s], PVR [(15.25±5.14) mL vs (16.21±5.26) mL], the incidence of complications(6.00% vs 5.00%)( P>0.05). Conclusion:It is safe and feasible to treat benign prostatic hyperplasia by transurethral plasma anatomical prostatectomy assisted by tissue planer, which can significantly improve its clinical efficacy.

20()-Protopanaxatriol promotes the binding of P53 and DNA to regulate the antitumor network multiomic analysis

Although the tumor suppressor P53 is known to regulate a broad network of signaling pathways, it is still unclear how certain drugs influence these P53 signaling networks. Here, we used a comprehensive single-cell multiomics view of the effects of ginsenosides on cancer cells. Transcriptome and proteome profiling revealed that the antitumor activity of ginsenosides is closely associated with P53 protein. A miRNA-proteome interaction network revealed that P53 controlled the transcription of at least 38 proteins, and proteome-metabolome profiling analysis revealed that P53 regulated proteins involved in nucleotide metabolism, amino acid metabolism and "Warburg effect". The results of integrative multiomics analysis revealed P53 protein as a potential key target that influences the anti-tumor activity of ginsenosides. Furthermore, by applying affinity mass spectrometry (MS) screening and surface plasmon resonance fragment library screening, we confirmed that 20()-protopanaxatriol directly targeted adjacent regions of the P53 DNA-binding pocket and promoted the stability of P53-DNA interactions, which further induced a series of omics changes.

Development and Comparison of Determination of Staphylococcus aureus in Different Processed Products of Angelicae Sinensis Radix Based on Real-time PCR Technique / 中国实验方剂学杂志

Objective:To quantitatively analyze the changes of Staphylococcus aureus in different processed products of Angelicae Sinensis Radix. Method:The real-time fluorescence quantitative polymerase chain reaction method （Real-time PCR） was established to quantitatively analyze S. aureus in Angelicae Sinensis Radix decoction pieces which bought from different producing areas， different enterprises and different storage time. The fluorescence quantitative reaction system was SYBR Premix Ex Taq Ⅱ of 10 μL， each of forward primer and reverse primer （10 μmol·L-1） of 0.8 μL， template/genome DNA of 1 μL， double distilled water of 7.4 μL. The reaction conditions of the fluorescence quantitative amplification curve were pre-denaturing for 30 s at 94 ℃， denaturing for 10 s at 94 ℃， annealing for 12 s at 60 ℃， extensing for 30 s at 72 ℃， cycling 45 times， single-point detection signal at 72 ℃. The melting curve was made from 72 ℃， and the step temperature of 0.5 ℃ was kept for 15 s to collect fluorescence. According to the results of Real-time PCR， representative samples were selected from Angelicae Sinensis Radix decoction pieces for comparison between plate counting method and Real-time PCR. Result:The content of S. aureus in different processed products was sorted by rank of raw Angelicae Sinensis Radix>soil-fried Angelicae Sinensis Radix>wine-processed Angelicae Sinensis Radix. The content of S. aureus was the lowest in the samples from Weiyuan area of Gansu province by comparing with other producing areas. Compared with the retail enterprises， the content of S. aureus in raw products and wine-processed products from production and sale enterprises was lower. Different storage time had certain effect on the content of S. aureus in raw products and wine-processed products， and the content of S. aureus increased with the increase of storage time. The detection results of plate counting method were 3-4 orders of magnitude lower than that of Real-time PCR. Conclusion:The established Real-time PCR is superior to plate counting method in specificity， sensitivity， reliability and reporting period， which can provide an effective method for rapid and accurate quantitative detection of S. aureus in different processed products of Angelicae Sinensis Radix.

Technology optimization of Gardeniae Fructus processed with ginger juice and composition changes after processing / 中国中药杂志

To optimize the technology of Gardeniae Fructus processed with ginger juice,establish fingerprints and simultaneously determine seven compounds( geniposidic acid,chlorogenic acid,genipin-1-β-D-gentiobioside,geniposide,rutin,crocin Ⅰ,and crocin Ⅱ) by using ultra high performance liquid chromatography( UPLC). Waters ACQUITY UPLC BEH C18( 2. 1 mm×50 mm,1. 7μm) column was used with acetonitrile and 0. 1% formic acid solution as mobile phase for gradient elution at the flow rate of 0. 4 m L·min-1. The data was comprehensively processed and analyzed with similarity evaluation,principal component analysis( PCA) and partial least squares discriminant analysis( PLS-DA) methods. Twenty common peaks were identified in this study,and the similarity of samples was over 0. 97. The results of PCA and PLS-DA showed that there were differences in chemical compositions and contents between the raw Gardeniae Fructus and those processed with ginger juice,with 9 potential differentiated chromatographic peaks. After being processed with ginger juice,the contents of chlorogenic acid,crocin Ⅰ and crocin Ⅱ were less than before and the contents of other four compositions were higher than before. The optimized preparation for Gardeniae Fructus processed with ginger juice was stable and feasible. The methods of UPLC fingerprints and simultaneous determination of seven components can be effectively carried out to distinguish Gardeniae Fructus and Gardeniae Fructus processed with ginger juice.

Quality evaluation of multi-components simultaneous determination and fingerprint of Gardeniae Fructus from different regions / 中国中药杂志

An analysis method was established by UPLC fingerprint and then applied to simultaneous determination of multiple compounds in Gardeniae Fructus from different areas in China. Samples were separated on a Waters Acquity UPLC BEH C18( 2. 1 mm×50 mm,1. 7 μm) column with 0. 1% formic acid-water and acetonitrile solution as gradient mobile phase at a flow rate of 0. 4 m L·min-1 at various wavelengths. The similarity of samples was over 0. 95 with ″Similarity Evaluation System for Chromatographic Fingerprint of Traditional Chinese Medicine( 2012 edition) ″. The UPLC common fingerprints for 32 batches were established with 19 common peaks identified. The samples were divided into 3 groups analyzed by HCA and PCA. Five components were identified as the main compositions which caused the differences of chemical constituents in the samples from different areas with partial least squares discriminant analysis( PLS-DA). The content of the total components in each area was Zhejiang > Fujian > Jiangxi > Sichuan. This method was accurate and viable,could be used to evaluate the quality of Gardeniae Fructus.

Study on quality of standard decoction of Coptidis Rhizoma based on traditional decoction process / 中国中药杂志

In order to determine the quality evaluation method for standard decoction of Coptidis Rhizoma,15 batches of standard decoction of Coptidis Rhizoma were prepared by using standardized process. Parameters such as traits,p H value,indicative component content,fingerprint similarity,composition transfer rate and dry extract rate were selected as the indexes for quality evaluation. Similarity evaluation and cluster analysis were performed for HPLC fingerprint of standard decoction,and mathematical model was used to study the correlation between dry extract rate,berberine content,berberine transfer rate in standard decoction and berberine content in decoction pieces. The results showed that the similarity of fingerprints was greater than 0. 99 for these 15 batches of standard decoctions of Coptidis Rhizoma. In cluster analysis,the standard decoctions of Coptidis Rhizoma from 4 producing areas were classified into 3 categories,consistent with the content determination results,indicating that there were quality differences among different producing areas.R2 in three linear regression mathematical models established was all greater than 0. 9,with significant difference. The validation of three batches of data showed that the models had good accuracy. Therefore,this model can be used to predict the quality of standard decoction prepared from different Coptidis Rhizoma pieces. In the standard decoction process established in this study,the integrity of the traditional process was greatly preserved,and the established quality evaluation method could be used to comprehensively examine the quality of the standard decoction,which can provide a demonstration for the related research of water extraction preparation containing Coptidis Rhizoma pieces.

Role of hypoxia-inducible factor-1a in ischemia/reperfusion injury of donor kidney during kidney transplantation / 国际外科学杂志

In the process of kidney acquisition and transplantation, the donor kidney undergoes hypoxia, ischemia and reperfusion, which inevitably leads to ischemia/reperfusion (I/R) injury of the donor kidney. Hypoxia-inducible factor-1α(HIF-1α) is a ubiquitous oxygen-sensitive transcription factor. It can be activated rapidly during I/R injury. Then preventing and reducing the I/R injury of donor kidney during kidney transplantation by mediating the adaptation of donor kidney to hypoxic stress through direct or indirect ways, and participating in the repair of injury, thereby improving the effect of kidney transplantation. This review describes the evidence of the role of HIF-1α in I/R injury of donor kidney during kidney transplantation, and provides a theoretical basis for further research.

UPLC fingerprint and multi-components content determination of different processed products of Angelica sinensis / 中国中药杂志

Ten batches of Angelica sinensis from three producing areas( Tuoxiang,Minxian and Weiyuan of Gansu province) were selected as the research objects,and processed into raw A. sinensis,A. sinensis with alcohol,and A. sinensis with soil respectively through the standard processing methods. Ultra-high performance liquid chromatography( UPLC) was used to establish fingerprint for three processed products of A. sinensis,and determine the contents of 9 phenolic acids and phthalide compounds. The similarity was analyzed with Similarity Evaluation System for Chromatographic Fingerprint of Traditional Chinese Medicine,which showed that the chromatographic peaks of the same processed samples of A. sinensis were basically similar,with all similarities greater than 0. 950. The difference between different processed products and their control spectra was not obvious,with all similarities also higher than 0. 950.On the basis of using principal component analysis( PCA) and OPLS-DA to seek the difference components between groups,the improved distance coefficient method can be used to effectively distinguish the three processed products of A. sinensis by fingerprint similarity. At the same time,the determination method of nine phenolic acids and phthalide in A. sinensis was established by UPLC,and the comparison between different processed products was carried out. The results showed that the content of various components was changed as compared with the raw A. sinensis. The contents of coniferyl ferulate and ligustilide in the A. sinensis with alcohol were increased significantly,and the content of coniferyl ferulate was obviously increased in A. sinensis with soil. The method established in this paper can effectively distinguish different processed products of A. sinensis and determine the content of the main components in them.

Influence of dual antiplatelet therapy combined different dose of atorvastatin calcium on serum levels of MCP‐1 and VE‐cadherin in patients with acute cerebral infarction／ / 心血管康复医学杂志

To explore influence of dual antiplatelet therapy combined different dose of atorvastatin calci‐um on serum levels of monocyte chemoattractant protein (MCP)‐1 and vascular endothelial cadherin (VE‐cadherin) in patients with acute cerebral infarction atorvastatin routine dose group (ACI).Methods :A total of 119 ACI patients admitted in our hospital from 2016 to 2017 were randomly divided into atorvastatin routine dose group (n＝61) and large dose group (n＝58 ,40mg ,once／d) ,both groups received routine treatment and aspirin + clopidogrel for 30d. NIHSS ,serum levels of hsCRP ,TNF‐α ,IL‐8 ,MCP‐1 and VE‐cadherin ,carotid atherosclerotic plaque size and IMT before and after treatment ,and incidence of adverse reactions were measured and compared between two groups . Results :Compared with before treatment ,there was significant reduction in NIHSS score after 15d and 30d in two groups ,and those of 30d were significantly lower than those of 15d ,P＝0. 001 all ;compared with routine dose group after 15d and 30d ,there was significant reduction in NIHSS score [15d :(5.32 ± 1. 63 ) scores vs .(4. 13 ± 1.25 ) scores] in large dose group ,P＝ 0.001 ;Compared with routine dose group after 30d ,there were significant reduc‐tions in serum levels of hsCRP [(9.37 ± 1.85)mg／L vs.(6. 35 ± 1.94)mg／L] ,TNF‐α[(10. 15 ± 2.47)μg／L vs.(7. 44 ± 1.94)μg／L ] ,IL‐8 [(20. 35 ± 4.48 )μmol／L vs.(15. 14 ± 3. 61 ) μmol／L ] ,MCP‐1 [(234.54 ± 32. 53 ) ng／L vs. (185.46 ± 29. 47) ng／L] ,VE‐cadherin [(5. 32 ± 0. 49)mg／L vs.(4. 18 ± 0.54) mg／L] ,plaque size [(17.25 ± 3.14) mm2 vs.(14.13 ± 2.07)mm2 ] and IMT[(1.08 ± 0.25)mm vs.(0.85 ± 0. 17)mm] in large dose group ,P＝0.001 all. There was no significant difference in incidence rate of adverse reaction between two groups .Conclusion :Large dose atorvastatin combined dual antiplatelet therapy can significantly reduce serum levels of MCP‐1 and VE‐cadherin ,im‐prove brain function without increasing incidence rate of adverse reactions .

Study progress in treatment of congenital ureteropelvic junction obstruction / 中华实用儿科临床杂志

Congenital ureteropelvic junction obstruction(UPJO)is a common urinary tract obstructive disease and it is one of the common causes of hydronephrosis in children and adolescents. Untreated UPJO may cause aggrava﹣tion of hydronephrosis,chronic infection,urinary calculi,or even Worsening of renal function. UPJO＇s treatment includes conservative and surgical treatment,and surgical treatment not only includes endoscopic surgery and classic open pyelo﹣plasty,it also includes minimally invasive techniques such as laparoscopy and robot－assisted laparoscopic surgery. In recent years,the application of minimally invasive techniques in pyeloplasty has been greatly improved and developed, noW the research progress of UPJO in treatment is revieWed.

Dynamic contrast-enhanced magnetic resonance imaging evaluation of blood supply in different zone of the normal femoral head in adults / 实用放射学杂志

Objective To investigate the difference of blood supply in different areas of the normal femoral head in adults.Methods A retrospective study analyzed the DCE-MRI parameters data of 2 5 normal adults (25 right hips)in our hospital.The femoral head was assumed to be a sphere.On T1 WI of DCE-MRI,the right femoral head was divided into three parts equally in coronal,sagittal, and transverse plane respectively.Time to peak(TTP),maximum of enhancement at first past(fEmax),maximum of enhancement (Emax)were measured in three parts and compared in coronal,sagittal and transverse plane respectively.Results (1 )In coronal plane,there were no significant differences between the three parts in TTP,fEmax and Emax.(2 )In transverse plane,fEmax and Emax were lower in the transverse superior zone than that in the transverse central zone significantly (P＝0.024 and P＝0.001)and the transverse inferior zone(P＝0.005 and P＝0.018).TTP was higher in the transverse superior zone than that in the transverse central zone and the transverse inferior zone(P＝0.005 and P＝0.018).(3)In sagittal plane,fEmax and Emax were lower in the sagittal lateral zone than that in the sagittal centralzone (P＝0.019 and P＝0.041)and sagittal medial zone (P＝0.047 and P＝0.01 1).TTP was higher in the sagittal lateral zone than that in the sagittal central zone and the sagittal medial zone(P＝0.014 and P＝0.010).There were no significant differences between other paired zones of the any values.Conclusion DCE-MRI can show the microcirculation in the normal adult femoral head in a non-invasive way.According to DCE-MRI parameters,there are poor perfusions on the transversesuperior and sagittallateral zones of the normal femoral head in adults.

Role of hypoxia-inducible factor-1a in ischemia/reperfusion injury of donor kidney during kidney transplantation / 国际外科学杂志

In the process of kidney acquisition and transplantation,the donor kidney undergoes hypoxia,ischemia and reperfusion,which inevitably leads to ischemia/reperfusion (I/R) injury of the donor kidney.Hypoxia-inducible factor-1α (HIF-1α) is a ubiquitous oxygen-sensitive transcription factor.It can be activated rapidly during I/R injury.Then preventing and reducing the I/R injury of donor kidney during kidney transplantation by mediating the adaptation of donor kidney to hypoxic stress through direct or indirect ways,and participating in the repair of injury,thereby improving the effect of kidney transplantation.This review describes the evidence of the role of HIF-1α in I/R injury of donor kidney during kidney transplantation,and provides a theoretical basis for further research.

Effects of nitrogen form on accumulation of alkaloids and expression of relative genes in Atropa belladonna / 中国中药杂志

Hyoscyamine and scopolamine are two main alkaloids in Atropa belladonna with great medicinal value. In this paper, the contents of hyoscyamine and scopolamine, the upstream products in alkaloid synthesis, and the expression levels of key enzyme genes PMT, TRⅠ and H6H in secondary metabolism of A. belladonna seedlings were measured to clarify the mechanism of nitrogen forms regulating alkaloids synthesis.The results showed that the 50/50 (NH⁺₄/NO⁻₃) treatment was more favorable for the accumulation of alkaloids and the conversion of hyoscyamine to scopolamine. The content of putrescine was almost consistent with the change of key enzymes activities in the synthesis of putrescine, they both increased with the rise of ammonium ratio, reaching the highest at 75/25 (NH⁺₄/NO⁻₃). The detection of signaling molecule nitric oxide (NO) showed that the NO concentration decreased with the decrease of nitrate proportion. Further detection of gene expression levels of PMT, TRⅠ and H6H in TAs synthesis pathway showed that a certain amount of ammonium promoted the expression of PMT and H6H in roots. When the ratio of ammonium to nitrate was 50/50, PMT, TRⅠ and H6H in leaves and roots had higher expression levels. It can be speculated that the regulation of the formation of hyoscyamine to scopolamine by nitrogen forms mainly through affecting the expression of key enzyme genes. 50/50 (NH⁺₄/NO⁻₃) treatment increased the gene expression of TRⅠ in both leaves and roots as well as PMT and H6H in roots, promoting the synthesis of putrescine to hyoscyamine and the conversion of hyoscyamine to scopolamine.

Influence of elicitors on effective constituents and expression of key metabolic enzyme genes in hairy roots of Atropa belladonna / 中草药

Objective To improve the yield of the effective medicinal ingredients of Atropa belladonna, to provide economic and efficient method for the actual production of A. belladonna, therefore to provide a basic reference for the related research on the mechanism of secondary metabolism of medicinal plants. Methods In this study, the influences of four kinds of elicitors, including methyl jasmonate (MJ), AgNO3, salicylic acid (SA), yeast extract (YE), on the accumulation of active components and the expression level of key metabolic enzyme genes, including putrescine N-methyl transferase (pmt), tropinone reductase-I (trI), and hyoscyamine-6-β-hydroxylase (h6h), were studied in hairy roots of A. belladonna. 0.5 g fresh hairy roots of A. belladonna were cultivated in B5 liquid medium. 12 d later, these mediums were replaced with the new medium containing one kind of four elicitors. Hairy roots were taken samples after 2 d to mensurate the fresh weight, dry weight, the content of tropane alkaloids, some physiological indexes, and three key genes expression level. Results MJ inhibited the growth and tropane alkaloids accumulation of hairy roots. The gene expression level of pmt and trI also decreased compared with control group (CK). The contents of tropane alkaloids and the expression level of pmt, trI and h6h were all increased compared with CK by the treatment of AgNO3, while the growth of hairy rootswas inhibited; SA contributed to the increased content of hyoscyamine, but with no obvious influence on growth of hairy roots. As to YE, the content of tropane alkaloids and the expression level of pmt, trI, h6h were all increased correspondingly. Further more, YE was benefit for the growth of hairy roots. Conclusion Elicitors had selective influence on growth and tropane alkaloids accumulation in hairy roots of A. belladonna. The best elicitor on accumulation of tropane alkaloids was AgNO3. YE could effectively improve of the growth of hairy and contents of tropane alkaloids. This study concluded that these elicitors influence the secondary metabolism of A. belladonna by regulating and controlling the expression level of some genes of key metabolic Enzyme, which could provide an effective method to enhance the medicinal composition in the culture of hairy roots of A. belladonna.

Curcumin ameliorates myocardial fibrosis via TGF-β/Smads signaling pathway in diabetic rats / 中国药理学通报

Aim To investigate the role of TGF-β/Smads signaling pathway in the improvement of myo-cardial fibrosis in diabetes mellitus by curcumin. Methods A model of type 2 diabetes mellitus was in-duced by intraperitoneal injection of small dose of streptozotocin (STZ) 35 mg·kg-1with a high glucose and high fat diet, and then intervened by drinking of 300 mg·kg·d-1curcumin. The expression of myo-cardial collagen in rats was detected by Sirius red stai-ning. The expressions of Collange I and Collagen III in myocardium of rats were detected by immunofluores-cence. Cardiac fibroblasts(CFs) in neonatal rats were stimulated by different concentrations of glucose(5.5, 20,25, 30, 35, 50 mmol·L-1) for 24 h to deter-mine the optimum concentration of high glucose model, and rat CFs were stimulated for 24 h by 30 mmol·L-1 high glucose plus different concentrations of curcumin (10,25,50,100,200 μmol·L-1) to determine the optimal concentration of curcumin. The expressions of type Ⅰ and Ⅲ collagen,TGF-β1,p-Smad2,Smad2, p-Smad3,Smad3 and TβR-Ⅲin CFs were detected by Western blot. Results Compared with the control rats,the collagen deposition in the myocardium of the diabetic rats was more obvious and the expression of Collagen Ⅰ and Collagen Ⅲ significantly increased. After treatment of curcumin,the collagen deposition in the myocardium and the expression of Collagen I and CollagenⅢof diabetic rats remarkably decreased. The CFs under the condition of 30 mmol·L-1high glucose and 24 h had the highest survival rate (P <0.05);10μmol·L-1curcumin could obviously inhibit the proliferation of myocardial fibroblasts induced by high glucose (P<0.05). After induced by 30 mmol·L-1 high glucose for 24 h, the expression of Collagen Ⅰand Collagen Ⅲ, TGF-β1, p-Smad2, Smad2, p-Smad3,Smad3 and TβR-Ⅲ proteins in CFs markedly increased(P <0.05), and the expression levels of these proteins were obviously reduced when treated with 25 μmol·L-1curcumin. Conclusion Curcumin could ameliorate myocardial fibrosis in diabetic rats through TGF-β/Smads signaling pathway, exerting the protective effect on myocardium in diabetic rats.