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Objective:To investigate the effect of different pressure balloon dilation combined with prying reduction and bone graft fixation in the treatment of thoracolumbar fractures and the risk factors of postoperative re-fracture.Methods:One hundred cases of thoracolumbar fracture patients admitted to Cangzhou Integrated Traditional Chinese and Western Medicine Hospital in Hebei Province from March 2019 to June 2021 were selected. Prospective randomized controlled study method was used and random number table method was used to divide them into three groups: incomplete expansion group (33 cases), moderate expansion group (33 cases) and complete expansion group (34 cases). All the 3 groups were treated with balloon dilation combined with prying reduction and bone graft fixation. The pressure of balloon dilation in incomplete dilation group, moderate dilation group and complete dilation group was 100 psi, 150 psi and no more than 200 psi respectively, and the volume of balloon dilation was 0.5∶1, 1∶1 and 1.5∶1 respectively. The operation time, intraoperative bleeding volume, postoperative drainage volume, vertebral anterior margin recovery rate and hospital stay, as well as local Cobb angle, visual analog scale (VAS) and Oswestry disability index (ODI) scores before and after operation were compared among the three groups. According to the follow-up of whether there is re-fracture after surgery, the clinical data of the re-fracture group and the non re-fracture group were compared, and the risk factors of the re-fracture after surgery were analyzed. The measurement data with normal distribution was expressed as: independent sample t-test was used for comparison between two groups, one-way ANOVA or repeated measurement ANOVA was used for comparison between three groups, and SNK-q test was used for comparison between two groups. Counting data were expressed in cases or cases (%), and compared between groups by χ 2 Inspection. Logistic regression was used to analyze the risk factors of refracture after thoracolumbar fracture. Results:There was no significant difference in operation time, intraoperative blood loss and postoperative drainage volume among the three groups ( P=0.096, 0.328 and 0.344, respectively). The recovery rate of vertebral anterior edge height in moderate expansion group was higher than that in incomplete expansion group and complete expansion group ((84.15±4.21)% vs (70.18±7.44)%, (75.94±6.56)%), and the hospitalization time was shorter than that in incomplete expansion group and complete expansion group ((10.38±2.35) d vs (15.18±3.44), (14.59±2.48) d) (all P<0.001). Before treatment, there was no significant difference in Cobb angle, VAS and ODI scores among the three groups (all P>0.05). After treatment, the Cobb angle, VAS and ODI scores of patients in the three groups were lower than those before treatment, and the moderate expansion group were lower than those in the incomplete expansion group and the complete expansion group ((14.08±2.15) ° vs (16.48±4.85) °, (15.06±3.45) °, (1.81±0.53)% vs (2.25±0.41), (2.31±0.42), (18.16±2.18)% vs (20.48±4.85), (20.01±4.45) points) (all P<0.001). 100 patients were followed up until the fracture was healed. They were divided into re-fracture group (15 cases) and non re-fracture group (85 cases) according to whether there was re-fracture after operation. The results of multifactor logistic regression analysis showed that body mass index and bone mineral density were protective factors for patients with thoracolumbar fracture after operation (odds ratio was 0.66 and 0.15 respectively, 95% confidence interval: 0.51~0.86, 0.05~0.42, P values were 0.006 and <0.001 respectively), The old wedge-shaped change of the vertebral body and the abnormal structure of the lumbar spine are the risk factors for postoperative re-fracture (odds ratio 4.22 and 6.36, 95% confidence interval 1.14-15.56 and 1.43-28.21, respectively, P values were 0.027 and 0.015). Conclusions:In the treatment of thoracolumbar fracture with prying reduction and bone grafting fixation, the effect of balloon expansion pressure of 150 psi is better. Body mass index (BMI) and bone mineral density (BMD) were protective factors for postoperative re-fracture of patients with thoracolumbar fracture. Old wedge-shaped change of vertebral body and abnormal lumbar structure are risk factors for postoperative re-fracture.
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Objective To investigate the effect of Huatan Qushi Huoxue prescription on lipopolysaccharide (LPS)-induced pyroptosis of RAW264.7 cells and its mechanism. Methods An in vitro cell model of LPS-induced activated RAW264.7 was established and divided into blank group, model group, high-, middle-, and low-dose Huatan Qushi Huoxue prescription groups, and control group. The corresponding drug-containing serum intervention was performed for 24 hours. A scanning electron microscope was used to observe cell morphology, and immunofluorescence assay was used to perform quantitative localization of GSDMD-N. Results The cells in the blank group were round and regular in shape with smooth surface, and those in the control group were swollen, with folds on the surface and gaps in the capsule, which were consistent with the morphology of cell pyroptosis. The cells in the control group had bubbles on the surface with obvious pseudopodia and pores in cell membrane, and those in the high-dose group were not swollen and had a rough surface with pseudopodia, with no obvious pores in cell membrane. The cells in the low- and middle-dose groups were swollen and had a rough surface of cell membrane with pores and pseudopodia. Immunofluorescence assay showed that compared with the blank group, the model group had a significant increase in the positive staining intensity of GSDMD-N, and compared with the model group, the control group and the Traditional Chinese medicine group had a reduction in the positive staining intensity of GSDMD-N. Conclusion Huatan Qushi Huoxue prescription can improve the pyroptosis of macrophages and reduce the expression of GSDMD-N.
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Objective To investigate the effect of Huatan Qushi Huoxue prescription on the ultrastructure of hepatocyte mitochondria in a rat model of nonalcoholic steatohepatitis (NASH). Methods A total of 48 male Sprague-Dawley rats were randomly divided into blank group, model group, Yishanfu group, and Huatan Qushi Huoxue prescription group, with 12 rats in each group. The rats in the model group and the drug groups were administered and modeled since week 2; the rats in the blank group were given normal diet, and those in the other three groups were given high-fat diet. Based on dose conversion between human and animal, the equivalent dose of Huatan Qushi Huoxue prescription was 1.26 g/100 g body weight, and the equivalent dose of polyene phosphatidylcholine capsules (Yishanfu) was 0.014 18 g/100 g body weight. The rats in the model group were given 0.9% sodium chloride by gavage, those in the Yishanfu group were given polyene phosphatidylcholine suspension by gavage, and those in the traditional Chinese medicine group were given the granules of Huatan Qushi Huoxue prescription by gavage, once a day for 10 consecutive weeks. A transmission electron microscope was used to observe liver ultrastructure and perform a quantitative analysis. A one-way analysis of variance was used for comparison of continuous data between multiple groups; for further pairwise comparison, the least significant difference t -test was used for data with homogeneity of variance, and the Dunnett's T3 was used for data with heterogeneity of variance. Results The model group had a large number of lipid droplets accumulated in hepatocytes, changes in mitochondrial morphology and structure, and reductions in the number of mitochondria and endoplasmic reticulum. The Huatan Qushi Huoxue prescription group had a significant reduction in lipid droplets in hepatocytes and significant increases in the number of mitochondria and endoplasmic reticulum compared with the model group, with intact mitochondrial membrane and structure. The Yishanfu group had a reduction in lipid droplets in hepatocytes, an increase in the number of mitochondria, and a reduction in the number of endoplasmic reticulum, with relatively intact mitochondrial membrane and structure. The quantitative analysis showed that compared with the blank group, the model group had a significant increase in the area of lipid droplets and a significant reduction in mitochondria, with a significant difference in mitochondrial density between the two groups (all P < 0.01); after drug intervention, the Yishanfu group had a significant reduction in the area of lipid droplets and a significant increase in the number of mitochondria, with a significant difference in mitochondrial density between the Yishanfu group and the model group (all P < 0.01); compared with the Yishanfu group, the traditional Chinese medicine group had a significantly greater reduction in the area of lipid droplets and a significant increase in the number of mitochondria, with a significant difference in mitochondrial density between the two groups (all P < 0.05). Conclusion Huatan Qushi Huoxue prescription can improve lipid accumulation, increase mitochondrial density, and protect mitochondrial structure and function, with a better clinical effect than Yishanfu.
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OBJECTIVE To establish the fingerprint of Huatan qushi huoxue decoction （HQHD），and to explore the effects of processing and decoction methods on its components. METHODS Using salvianolic acid B as reference ，HPLC fingerprints of 10 batches of single and mixed decoction of crude drugs ，single and mixed decoction of processed products （original formula referred to 8 ingredients were crude drugs ；processed formula referred to processed products of Alisma orientale ，Salvia miltiorrhiza ， Curcumae Radix and Bupleuri Radix ，and crude drugs of other ingredients ；single decoction referred to the mixing of each ingredient after being decocted separately ；mixed decoction refers to decocting after mixing all ingredients ）were stablished by Similarity Evaluation System of Chromatographic Fingerprints of Traditional Chinese Medicine （2012 edition）. The similarity evaluation，common peak identification and attribution ，chemical pattern recognition analysis were also carried out. RESULTS There were 37 common peaks in each fingerprint of 10 batches of single and mixed decoction of crude drugs ，single and mixed decoction of processed ，the similarities with control fingerprint were higher than or close to 0.950. Nine common peaks were identified，i.e. rutin （peak 12），hesperidin（peak 13），salvianolic acid B （peak 16），quercetin（peak 20），silybin（peak 22）， luteolin（peak 23），autrantio-obtusin（peak 29），23-acetylalismol C （peak 34），saikosaponin b 2（peak 35）；decoction pieces of 8 ingredients all contributed to the fingerprints of HQHD. Principal component analysis （PCA）showed that the 4 kinds of HQHD samples were grouped into one category ，respectively. The clustering result of partial least squares-discriminant analysis was consistent with that of PCA. Corresponding components of peak 1，15，17，18 and 36，salvianolic acid B and luteolin m ay be the differential markers of the quality for mixed decoction samples of crude drugs and processed products ； corresponding components of peak 1，7，17-19，salvianolic acid B and hesperidin may be the differential markers of the quality for single decoction samples of crude drugs and processed products；corresponding components of peak 1，17-19，36， salvianolic acid B and luteolin may be the differential markers of the quality for single decoction and mixed decoction samples of crude drugs ；corresponding components of peak 7，17-19，21， hesperidin，salvianolic acid B ，rutin，luteolin and autrantio-obtusin may be the differential markers of the quality for single decoction and mixed decoction samples of processed products. CONCLUSIONS The established fingerprint of HQHD is stable and reliable. The quality differential components of different decoction samples are luteolin ，hesperidin，etc. The quality differential components of samples processed or not are rutin ，hesperidin，autrantio-obtusin，etc.
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Ferroptosis is a type of iron-dependent cell death driven by lipid peroxidation, and its mechanism is associated with iron homeostasis imbalance, lipid peroxidation, and slC7A11-GSH-GPX4 antioxidant system. Ferroptosis plays a key role in the development and progression of nonalcoholic fatty liver disease (NAFLD)/nonalcoholic steatohepatitis (NASH), and inhibition of ferroptosis can almost completely inhibit the development of NASH. This article reviews the research advances in the mechanism of ferroptosis and its role in NAFLD/NASH and proposes the research strategies and technical means for ferroptosis, so as to provide a reference for research on the mechanism of NAFLD/NASH.
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Nonalcoholic fatty liver disease (NAFLD) is currently the leading cause of abnormal liver biochemical parameters, but the mechanism of its development and progression remains unclear and there is a lack of effective treatment methods. This article reviews that lipotoxicity drives the transformation of NAFLD to nonalcoholic steatohepatitis and liver cirrhosis by triggering the three pathological responses in the liver, i.e., endoplasmic reticulum stress, cell death, and inflammation. It is believed that lipotoxicity is an important factor that promotes the progression of NAFLD to inflammation and fibrosis, which provides a new method for the prevention and treatment of NAFLD.
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A full length about 105 kb gene cluster containing 35 open reading frames involved in the biosynthesis of lobophorins was cloned and sequenced from a fosmid genomic library of Streptomyces olivaceus strain FXJ7.023. The cluster was identified by genome wide annotation and analysis of secondary metabolite biosynthesis gene clusters by anti SMASH and knockout of loading module-contained region of polyketide skeleton synthesis gene [the starter of lobS1]. Gene cluster comparative analysis suggested that the cluster encoded the complete genes for lobophorin polyketide assembly, modification, substrate catalysis, regulation, transportation and resistance, and shows great identity to the newest reported lobophorin biosynthetic gene cluster from Streptomyces sp. SCSIO 01127, but with a significant gene rearrangement in the PKS modules
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Multigene Family , Streptomyces , Cloning, Organism , Aquatic OrganismsABSTRACT
In order to obtain the natural products synthesized by the three putative xiamycin biosynthesis gene clusters which were predicted via antiSMASH during the genome mining of marine Streptomyces sp. FXJ 7.388, Streptomyces sp. FXJ 8.012, and Streptomyces olivaceus FXJ 7.023. Sixteen genes involved in xiamycin assembly, modification, and regulation with higher identity than the newest reported xiamycin biosynthetic gene cluster from marine Streptomyces sp. SCSIO 02999, Streptomyces sp. HKI0576, and Streptomyces sp. FXJ 7.388 were discovered via gene cluster comparative analysis. A ribosome engineering strategy was adopted to activate such cryptic gene clusters with different final concentrations antibiotics that act on the ribosome, and two indolosesquiterpenes were isolated from idlethaldose streptomycin-resistant Streptomyces sp. FXJ 7.388 strains. However, no such product was detected in Streptomyces sp. FXJ 8.012 and Streptomyces olivaceus FXJ 7.023 under the same treatment. This result suggested that these genes might hold the least gene content for xiamycin biosynthesis
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Objective To analyze medication rules of TCM treatment for primary hepatic carcinoma in recent ten years;To provide references for clinical medication. Methods Literature about primary hepatic carcinoma in CNKI, VIP and Wanfang database from January 2005 to September 2015 was searched by computers to carry out statistical analysis of medicine classification and frequency of usage. Results Through screening, 131 articles were included, covering 131 compound TCM prescriptions, 228 kinds of medicine, and 1416 times of frequency of usage. Medicines with relatively high frequency were tonifying deficiency medicine 430 times (30.37%), damp-clearing medicine 233 times (16.45%), medicine for invigorating blood circulation and eliminating stasis (12.99%). Medicines with relatively high frequency were Atractylodis Macrocephalae Rhizoma 64 times (4.52%), Poria 62 times (4.38%), Glycyrrhizae Radix et Rhizoma 52 times (3.67%), Bupleuri Radix 49 times (3.46%), Paeoniae Radix Alba 45 times (3.18%), Astragali Radix 44 times (3.22%), Curcumae Rhizoma 43 times (3.04%), and Artemisiae Scopariae Herba 41 times (2.90%). Conclusion This study summarizes the medicine classification and frequency of usage of TCM treatment for primary hepatic carcinoma in recent ten years, which can provide data support for clinical treatment.
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Objective To investigate the effect of multidisciplinary physician/nurse collaboration care mode in diagnosis and treatment of elderly patients with intertrochanteric fracture.Methods Clinical data of 433 elderly patients with intertrochanteric fracture treated from August 2011 to September 2013 were studied retrospectively.Among them,136 were diagnosed and treated using conventional methods (control group) and 297 using the multidisciplinary physician/nurse collaboration approach (collaboration group).Hospital stay,surgery rate,time from hospitalization and operation,and complications were compared between the two groups.Results Length of hospital stay [(14.8 ± 5.9) d] in collaboration group was not statistically different from that in control group [(16.0 ± 4.7) d,t =0.433,P ＞ 0.05],but surgery rate was improved (72.8％ vs 83.9％,x2 =7.212,P ＜ 0.05),time from hospitalization and operation shortened [(5.6 ± 2.9) d vs (6.9 ± 3.4) d,t =3.096,P ＜ 0.05],and perioperative complication rate reduced in collaboration group compared to control group (all P ＜ 0.05).Conclusion Multidisciplinary physician/nurse collaboration mode is a novel method for diagnosis and treatment of intertrochanteric fracture in the elderly and is associated with improved surgery rate,reduced perioperative complications and early functional recovery.
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Objective To investigate the effects of microRNA-196a(miR-196a) inhibitory sequences transfection on HOXB8 expression in PANC1 cells.Methods PANC1 cells were divided into control group,miR-196a inhibitory sequences group and siRNA control group.Liposomal transfection method was applied to transfect miR 196a inhibitory sequences and siRNA control into PANC1 cells.RT-PCR and Western blot were used to detect the expressions of miR-196a and HOXB8 mRNA and protein.Results After miR-196a inhibitory sequences transfection,when compared with that of siRNA control group,the expression of miR-196a was significantly decreased (0.05 ± 0.054 vs.0.839 ± 0.025,t =3.12,P ＜0.05) ; and the expression of HOXB8 mRNA was significantly increased by 1.57 folds (2.20 ± 0.07 vs.1.29 ± 0.10,t =3.86,P ＜ 0.05),the expression of HOXB8 protein was also obviously increased (0.90 ± 0.03 vs.0.40 ± 0.10,t =3.11,P ＜ 0.05).Conclusions MicroRNA-196a down-regulates the expression of HOXB8.
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Objective To investigate the effect of mild hyperthermia on chemoresistance of gemcitabine in the pancreatic cancer cell line PANC1.Methods The PANC1 cell was treated with gemcitabine ( 1 μmol/L) for 1 h,then was heated at 37℃,42℃ and 45℃ for 1 hour,and was cultured for 0 h,24 h,48 h.Cell growth was analyzed by CCK-8 assay.Cell apoptosis was analyzed by Annexin Vfluorescein isothiocyanate ( FITC)/propidium iodide (PI) staining.Results The proliferation of cells at 42℃ and 45℃ for 24 h and 48 h were significantly lower than that at 37℃ (0.96 ± 0.05,0.88 ± 0.03vs 1.05 ±0.02;1.28 ±0.04,0.94 ±0.04vs 1.49 ±0.09;t =4.367,25.120,P ＜0.05).The proliferation of cells at 45℃ was significantly lower than that at 42℃ (t =3.348,11.732,P ＜0.05).The cell apoptosis rates at 37℃,42℃,45℃ after 48 h were (7.125 ±0.064)％,(9.985 ±0.615)％,(14.845 ± 1.987)％,the difference among the 3 groups was statistically significant (t =10.320,9.832,4.575,P ＜0.05).Conclusions Mild hyperthermia can reduce chemoresistance of gencitabine in pancreatic cancer cell PANC1.