Petroleum hydrocarbon pollution has become one of the global environmental problems, posing a serious threat to the environment and human health. Microbial remediation plays an important role in the remediation of petroleum hydrocarbon-contaminated environment. Nevertheless, the stress factors present in the environment polluted by petroleum hydrocarbons limit the effectiveness of microbial remediation. This paper reviews the common stress factors in petroleum hydrocarbon-polluted environment and the response mechanisms of microorganisms to these factors. Furthermore, we introduce the methods to improve microbial tolerance, such as irrational modification, rational modification based on systems biology tools or tolerance mechanisms, and the construction of microbial consortia. The application of these methods is expected to improve the viability and remediation efficiency of microorganisms in petroleum hydrocarbon-contaminated environment and provide new perspectives and technical support for environmental remediation.
Biodegradation, Environmental ; Petroleum/metabolism* ; Hydrocarbons/isolation & purification* ; Bacteria/genetics* ; Environmental Pollutants/isolation & purification* ; Petroleum Pollution

[Objective]To analyze the value of grey-scale reversed T1-weighted(rT1)MRI in the detection of structur-al lesions of the sacroiliac joint(SIJ)in patients with axial spondyloarthritis(ax-SpA).[Methods]Fifty-two ax-SpA pa-tients who underwent both MRI and CT in our hospital within a week from February 2020 to December 2022 were retrospec-tively included.Both sacral and iliac side of each SIJ on oblique coronal images were divided into anterior,middle and pos-terior portion.Two radiologists reviewed independently three groups of MRI including T1-weighted imaging(T1WI),rT1 and T1WI+rT1 images to evaluate the structural lesions like erosions,sclerosis and joint space changes in each of the 6 re-gions of the SIJ.One of the radiologist did the evaluation again one month later.CT images were scored for lesions by a third radiologist and served as the reference standard.Intra-class correlation coefficients(ICC)were calculated to test the inter-and intra-reader agreement for the assessment of SIJ lesions.A Friedman test was performed to compare the lesion results of MRI and CT image findings.We examined the diagnostic performance[accuracy,sensitivity(SE)and specifici-ty]of different groups of MRI in the detection of lesions by using diagnostic test.A McNemar test was used to compare the differences of three groups of MRI findings.[Results]CT showed erosions in 71 joints,sclerosis in 65 and joint space changes in 53.Good inter-and intra-reader agreements were found in three groups of MRI images for the assessment of le-sions,with the best agreement in T1WI+rT1.There were no difference between T1WI+rT1 and CT for the assessment of all lesions,nor between rT1 and CT for the assessment of erosions and joint space changes(P>0.05).T1WI+rT1 yielded better accuracy and SE than T1WI in detection of all lesions(Accuracy erosions:90.3%vs 76.9%;SE erosions:91.6%vs 76.1%;Accu-racy sclerosis:89.4%vs 80.8%;SE sclerosis:84.6%vs 73.9%;Accuracy joint space changes:86.5%vs 73.1%;SE joint space changes:84.9%vs 60.4%;P<0.05).rT1 yielded better accuracy and SE than T1WI in detection of erosions and joint space changes(Accuracy erosions:87.5%vs 76.9%;SE erosions:88.7%vs 76.1%;Accuracy joint space changes:85.6%vs 73.1%;SE joint space changes:83.0%vs 60.4%;P<0.05).[Conclusions]In the detection of SIJ structural lesions in ax-SpA,rT1 improves the diagnostic perfor-mance and T1WI+rT1 is more superior to others.

Background/Aims: Disrupted bile acid regulation and accumulation in the liver can contribute to progressive liver damage and fibrosis. However, the effects of bile acids on the activation of hepatic stellate cells (HSCs) remain unclear. This study investigated the effects of bile acids on HSC activation during liver fibrosis, and examined the underlying mechanisms. Methods: The immortalized HSCs, LX-2 and JS-1cells were used for the in vitro study. in vitro, the adeno-associated viruses adeno-associated virus-sh-S1PR2 and JTE-013 were used to pharmacologically inhibit the activity of S1PR2 in a murine model of fibrosis induced by a 3,5-diethoxycarbonyl-1,4-dihydrocollidine (DDC) diet. Histological and biochemical analyses were performed to study the involvement of S1PR2 in the regulation of fibrogenic factors as well as the activation properties of HSCs. Results: S1PR2 was the predominant S1PR expressed in HSCs and was upregulated during taurocholic acid (TCA) stimulation and in cholestatic liver fibrosis mice. TCA-induced HSC proliferation, migration and contraction and extracellular matrix protein secretion were inhibited by JTE-013 and a specific shRNA targeting S1PR2 in LX-2 and JS-1 cells. Meanwhile, treatment with JTE-013 or S1PR2 deficiency significantly attenuated liver histopathological injury, collagen accumulation, and the expression of fibrogenesis-associated genes in mice fed a DDC diet. Furthermore, TCAmediated activation of HSCs through S1PR2 was closely related to the yes-associated protein (YAP) signaling pathway via p38 mitogen-activated protein kinase (p38 MAPK). Conclusions TCA-induced activation of the S1PR2/p38 MAPK/YAP signaling pathways plays a vital role in regulating HSC activation, which might be therapeutically relevant for targeting cholestatic liver fibrosis.

ObjectiveThis study aimed to predict the pharmacodynamic material basis and core targets of Bailing capsules in the treatment of chronic obstructive pulmonary disease （COPD） based on network pharmacology and molecular docking， which were further verified by cell experiments to explore the mechanism. MethodThe main active ingredients and related targets of Bailing capsules were screened in Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform （TCMSP） and SwissTargetPrediction. The main COPD targets were searched from GeneCards， DrugBank， Online Mendelian Inheritance in Man （OMIM） and Therapeutic Target Database （TTD）. The protein-protein interaction （PPI） network was constructed by STRING and Cytoscape 3.6.1. Gene Ontology （GO） function annotation and Kyoto Encyclopedia of Genes and Genomes （KEGG） pathway enrichment analysis were performed by the Database for Annotation， Visualization and Integrated Discovery （DAVID）. Molecular docking verification was carried out using AutoDock Vina. The cell viability was detected by 3-（4，5-dimethylthiazol-2-yl）-5-（3-carboxymethoxyphenyl）-2-（4-sulfophenyl）-2H-tetrazolium （MTS） assay， and the mRNA level of the targets was detected by real-time polymerase chain reaction （Real-time PCR）. ResultA total of 11 active ingredients of Bailing capsules such as cerevisterol， 270 related drug targets， and 1 020 COPD target proteins were obtained， with 74 intersection targets. The visualization analysis of the PPI network showed that the core targets of Bailing capsules in the treatment of COPD were tumor protein P53 （TP53）， catenin beta 1 （CTNNB1）， tumor necrosis factor （TNF）， interleukin-6 （IL-6） and insulin （INS）. Further， 20 signaling pathways were screened by KEGG enrichment analysis as the main pathways for Bailing capsules to treat COPD， involving phosphatidylinositol 3-kinase/protein kinase B （PI3K/Akt）， cyclic adenosine monophosphate （cAMP）， forkhead box O （FoxO）， TNF， and hypoxia inducible factor-1 （HIF-1） signaling pathways. Molecular docking validation demonstrated that four active ingredients had stable binding to IL-6， with the lowest energy. Bailing capsules could reduce the mRNA level of IL-6 in RAW264.7 cells induced by lipopolysaccharide （LPS） （P<0.01） compared with the control group. ConclusionThe pharmacological mechanism of Bailing capsules in the treatment of COPD might be that its main active ingredients improved the inflammatory response by acting on TP53， CTNNB1， TNF， IL-6 and other targets and regulating PI3K/Akt， cAMP and other signaling pathways， thereby ameliorating COPD symptoms. This study provided experimental basis for subsequent in-depth research， and provided a diagnosis and treatment direction for disease-related clinical treatment.

Objective:To evaluate the value of implementing strict aseptic operation procedures in preventing central venous catheter-related infections.Methods:This retrospective cohort study consisting of non-surgical patients who underwent central venous catheterization from 2015 to 2019 were conducted.The patients were divided into 2 groups according to routine aseptic procedures and strict aseptic procedures, the patients between 2015 and 2017 served as routine aseptic procedure group (group C), and the patients between 2017 and 2019 served as strict aseptic procedure group (group E ). The occurrence of central venous catheter-related infections (local infection, bloodstream infection) was recorded within 6 days after catheterization.Results:Compared with group C, the incidence of central venous catheter-related local infection was significantly decreased (1.79% vs. 0.48%, P<0.001; the rate ratio being 0.27 ranged in 0.10-0.30), while no significant change was found in the incidence of central venous catheter-related bloodstream infection in group E (0.29% vs. 0.19%, P>0.05). The cumulative incidence of central venous catheter-related infections was 0.67%(<1.00%) in group E. Conclusions:Implementation of strict aseptic procedures during central venous catheterization can further reduce the occurrence of central venous catheter-related infections, which has significant clinical value.

Objective:To systematically evaluate the therapeutic efficacy of enteral nutrition(EN)versus parenteral nutrition(PN)in patients after liver transplantation(LT).Methods:The databases of Cochrane Library, MEDLINE, EmBase, EBSCO, Sinomed, CBM, CNKI and Wanfang Data were systematically searched up to August 2021 for collecting randomized controlled trials(RCT)of comparing EN and PN in patients after LT.In strict accordance with the inclusion and exclusion criteria, two independent researchers carried out literature screening, data extracting and literature methodological quality evaluations.Then RevMan5.3 software was utilized for quantitative synthesis and statistical processing.Results:A total of 13 RCTs involving 571 grade B patients were included.Meta-analysis indicated that, as compared with PN, serum albumin of EN spiked[WMD=2.5(1.33, 3.68), WMD>0, P<0.000 1], prealbumin rose[WMD=59.78(32.22, 87.35), WMD>0, P<0.000 1], total bilirubin dropped[WMD=-27.81(-41.88, -13.74), WMD<0, P=0.000 1]and infection incidence was significantly lower[ OR=0.25(0.16, 0.39), OR<1, P<0.000 01]. Conclusions:After LT, as compared with PN, EN can boost the nutritional level, promote the recovery of liver function and lower the incidence of postoperative infections.It offers some clinical values.

Objective:To investigate the effects of ultrasound-guided intervention with methotrexate combined with lauromacrogol on uterine wall thickness and menstrual recovery time in patients with uterine scar pregnancy.Methods:Sixty patients with uterine scar pregnancy who received treatment in Jinhua Wenrong Hospital, Jinhua Central Hospital, and Yiwu Maternity and Children Hospital from February 2019 to February 2020 were included in this study. They were randomly assigned to receive either uterine artery embolization treatment ( n = 30, control group) or ultrasound-guided interventions with methotrexate combined with lauromacrogol ( n = 30, study group). The success rate of treatment, uterine wall thickness at the scar, menstrual recovery time, hospitalization time, hospitalization expenses, incidence of adverse reactions, serum levels of beta-human chorionic gonadotropin (β-HCG) and high sensitivity C-reactive protein (hs-CRP) after 7 days of treatment and uterine wall thickness before and after treatment were compared between the study and control groups. Results:After treatment, the success rate of treatment in the study group was significantly higher than that in the control group [96.67% (29/30) vs. 70.00% (21/30), χ 2 = 7.680, P < 0.05]. Before treatment, there were no significant differences in β-HCG and hs-CRP levels between the control and study groups ( t = -0.197, 0.197, both P > 0.05). After treatment, serum level of β-HCG in the control and study groups was significantly decreased ( t = 22.803, 10.233, both P < 0.01), and serum level of hs-CRP in the control and study groups was significantly increased ( t = -16.357, 7.854, both P < 0.001) compared with before treatment. After treatment, there were no significant differences in serum β-HCG and hs-CRP levels between the control and study groups ( t = 20.413, -20.306, both P < 0.05). After treatment, the incidence of adverse reactions in the study group was significantly lower than that in the control group [6.67% (2/30) vs. 30.00% (9/30), χ 2 = 5.455, P < 0.05). After treatment, menstrual recovery time, hospitalization time and hospitalization expenses in the study group were shorter or less than those in the control group ( t = 5.080, 5.398, 7.599, all P < 0.05). There was no significant difference in the thickness of uterine wall at the scar site between the two groups ( t = -1.045, P > 0.05). Conclusion:Ultrasound-guided intervention with methotrexate combined with lauromacrogol for treatment of uterine scar pregnancy can effectively increase the success rate of treatment, promote the restoration of menstruation, shorten the length of hospital stay, and is highly safe.

Objective:To analyze the characteristics of COVID-19 case spectrum and spread intensity in different provinces in China except Hubei province.Methods:The daily incidence data and case information of COVID-19 were collected from the official websites of provincial and municipal health commissions. The morbidity rate, severity rate, case-fatality rate, and spread ratio of COVID-19 were calculated.Results:As of 20 March, 2020, a total of 12 941 cases of COVID-19 had been conformed, including 116 deaths, and the average morbidity rate, severity rate and case-fatality rate were 0.97/100 000, 13.5 % and 0.90 %, respectively. The morbidity rates in Zhejiang (2.12/100 000), Jiangxi (2.01/100 000) and Beijing (1.93/100 000) ranked top three. The characteristics of COVID-19 case spectrum varied from province to province. The first three provinces (autonomous region, municipality) with high severity rates were Tianjin (45.6 %), Xinjiang (35.5 %) and Heilongjiang (29.5 %). The case-fatality rate was highest in Xinjiang (3.95 %), followed by Hainan (3.57 %) and Heilongjiang (2.70 %). The average spread ratio was 0.98 and the spread intensity varied from province to province. Tibet had the lowest spread ratio (0), followed by Qinghai (0.20) and Guangdong (0.23). Conclusion:The intervention measures were effective in preventing the spread of COVID-19 and improved treatment effect in China. However, there were significant differences among different regions in severity, case-fatality rate and spread ratio.

Objective: To investigate the expression of circular RNA hsa_circ_0128298 in hepatocellular harcinoma (HCC) and evaluate its function in the growth process of HCC. Methods: qPCR was used to detect the expressions of hsa_circ_0128298 in 50 HCC tissues, corresponding paracancerous tissues and HCC cells. The effects of hsa_circ_0128298 on HCC growth was analyzed by CCK-8 kit, flow cytometry and western blot assays. The values of hsa_circ_0128298 for the diagnosis and prognosis of HCC were assessed by ROC curve and survival curve analyses. Results: Compared with the paracancerous tissues, the expression of hsa_circ_0128298 was significantly increased in HCC tissues ( U =846.0， P =0.005). The area under ROC curve (AUCROC) was 0.661, 95% confidence interval ( CI ) was 0.560 to 0.753, sensitivity was 80.0% and specificity was 50.0%. HCC patients with high expression of hsa_circ_0128298 displayed less overall survival time than those with low expression of hsa_circ_0128298 ( χ 2=6.294, P =0.012). RNA interference of hsa_circ_0128298 (si-hsa_circ_0128298) significantly inhibited HCC cell proliferation and induced cell cycle arrest at G0/G1, and also induced mRNA upregulation and protein expression of cyclin p21. Meanwhile，si-p21 partially reversed the proliferation inhibition and cell cycle arrest of HCC cells induced by si-hsa_circ_0128298, and restore its growth and proliferation potential. Conclusion The highly expressed hsa_circ_0128298 in HCC could promote the growth of HCC by regulating the expression of p21 and promise to be a new target for diagnosis and treatment of HCC.

Objective To evaluate the treatment of posterior malleolar two-part fractures complicated with medial and lateral malleolar fractures via a combination of posterolateral and posteromedial approaches.Methods From January 2014 to January 2017,26 patients were operatively treated at Department of Orthopaedics,Tongji Hospital for posterior malleolar two-part fractures complicated with medial and lateral malleolar fractures via a combination of posterolateral and posteromedial approaches.They were 10 men and 16 women,aged from 53 to 67 years(average,61.5 years).The surgery was conducted in prone position via the posterolateral and posteromedial approaches to expose simultaneously the fractures ends at medial,lateral and posterior malleoli for open reduction.The lateral malleolar fractures were fixated with plate,the medial malleolar fractures with screws and posterior malleolar fractures with plate or cannulated screws depending on the size of the fracture blocks.The outcomes were assessed using the ankle-hindfoot scores of American Orthopaedic Foot and Ankle Society(AOFAS) and the visual analogue scale(VAS).Results Of this cohort,22 were followed up for 30 months on average(range,from 18 to 48 months).All the cases healed by the first intension without any infection.Their postoperative X-ray showed bone union after an average of 12.5 weeks(range,from 10 to 15 weeks).No nonunion,loosening or breakage of implants was found.The mean time for walking with full weight-bearing was 13 weeks(range,from 11 to 16 weeks).Their AOFAS ankle-hindfoot scores at the final follow-ups were 85.4(range,from 80 to 92),yielding 13 excellent and 9 good cases with a good to excellent rate of 100%.Their mean VAS scores were decreased significantly from preoperative 8.6±0.6 to postoperative 1.7±0.3(f=153.000,P=0.000).Conclusion In treatment of posterior malleolar two-part fractures complicated with medial and lateral malleolar fractures,a combination of posterolateral and posteromedial approaches in prone position can expose and reduce simultaneously the fractures ends at medial,lateral and posterior malleoli,leading to satisfactory clinical outcomes.