Objective To investigate the levels of gross α and gross β activities in different water types within a 40-kilometer radius around the Zhangzhou Nuclear Power Plant prior to its operation. Methods In 2018, drinking water samples were collected from the area surrounding the nuclear power plant during both the wet and dry seasons, including source water, treated water, tap water, and well water. The gross α and gross β activity concentrations were measured using a low-background α/β counter, followed by statistical analysis. Results A total of 80 water samples from different sources around the Zhangzhou Nuclear Power Plant were collected. The average gross α and gross β activity concentrations during the wet season were (0.110 ± 0.036) Bq/L and (0.643 ± 0.028) Bq/L, respectively, while those during the dry season were (0.124 ± 0.032) Bq/L and (0.624 ± 0.026) Bq/L, respectively. There were no significant differences in the gross α and gross β activity concentrations between the wet and dry seasons for the overall sample set (P > 0.05). However, there were statistically significant differences in the gross α and gross β activity concentrations between the wet and dry seasons for source water and well water (Z_wet = −2.005, −2.123; Z_dry = −1.943, −3.090; P < 0.05). Conclusion The radioactivity levels in different water types within various ranges around the Zhangzhou Nuclear Power Plant before its operation were determined. The measured activity concentrations were at the same level as those from previous investigations in other regions of Fujian Province.

Objective:To discuss the role of angiopoietin-like protein 6(ANGPTL6)in liver fibrosis,and to analyze the improving effect of engineered exosome(Exo)-delivered ANGPTL6 mRNA on liver fibrosis.Methods:A total of 12 C57BL/6 mice were randomly divided into olive oil group(OIL group)(intraperitoneally injected with olive oil)and carbon tetrachloride(CCl4)group(intraperitoneally injected with a mixture of olive oil and CCl?),with 6 mice in each group;another 12 C57BL/6 mice were randomly divided into control group(fed a with methionine-choline sufficient diet)and methionine-choline deficient(MCD)group(fed a with MCD diet),and two kinds of mouse liver fibrosis models were established.Real-time fluorescence quantitative PCR(RT-qPCR)and Western blotting method were used to detect the ANGPTL6 mRNA and protein expression levels in liver tissue of the mice in various groups.A total of 30 mice were randomly divided into olive oil+phosphate buffered saline(PBS)group(OIL+PBS group)(intraperitoneally injected with olive oil twice a week for 8 weeks,then injected with PBS buffer by tail vein twice a week for 6 weeks),CCl4+Exo-green fluorescent protein(GFP)mRNA group(established liver fibrosis model by intraperitoneal injection of CCl4 mixture and were injected by tail vein with engineered Exo loaded with GFP mRNA for 6 weeks),and CCl?+Exo-ANGPTL6 mRNA group(established liver fibrosis model by intraperitoneal injection of CCl4 mixture and were injected by tail vein with engineered Exo loaded with ANGPTL6 mRNA for 6 weeks),with 10 mice in each group.The mice in CCl4+Exo-GFP mRNA group and CCl4+Exo-ANGPTL6 mRNA group were injected with engineered Exo twice a week,20 μg per mouse each time(volume 100 μL).ELISA method was used to detect the serum alanine aminotransferase(ALT)and aspartate aminotransferase(AST)activities in the mice in various groups;Masson staining and Sirius red staining were used to observe the collagen deposition in liver tissue of the mice in various groups;immunohistochemistry method was used to detect the α-smooth muscle actin(α-SMA)expression levels in liver tissue of the mice in various groups;RT-qPCR method was used to detect the expression levels of α-SMA,collagen type Ⅰ alpha 1 chain(Col1a1),transforming growth factor β1(TGF-β1),and tissue inhibitor of metalloproteinase 1(TIMP-1)mRNA in liver tissue of the mice in various groups.Results:The bioinformatics analysis results showed that ANGPTL6 expression was significantly down-regulated in activated hepatic stellate cell(aHSC).The ultrasound examination results showed that the liver surface of the mice in OIL group was fine and smooth;compared with OIL group,the liver section of the mice in CCl? group was rough and uneven.The RT-qPCR and Western blotting results showed that compared with OIL group,the ANGPTL6 mRNA and protein expression levels in liver tissue of the mice in CCl? group were significantly decreased(P<0.05).The engineered Exo extracted from the supernatant of HEK293T cells had intact structure and could be largely enriched in the fibrotic liver after tail vein injection,with GFP protein being largely expressed in the liver.The ELISA assay results showed that compared with OIL+PBS group,the ALT and AST activities in CCl4+Exo-GFP mRNA group were significantly increased(P<0.05);compared with CCl4+Exo-ANGPTL6 mRNA group,the serum ALT and AST activities in CCl4+Exo-GFP mRNA group were significantly decreased(P<0.05).The Masson staining and Sirius red staining results showed that compared with OIL+PBS group,the collagen deposition in liver tissue of the mice in CCl?+Exo-GFP mRNA group was significantly increased,and the relative collagen area was increased(P<0.05);compared with CCl4+Exo-GFP mRNA group,the collagen deposition in tissue liver of the mice in CCl?+Exo-ANGPTL6 mRNA group was significantly decreased,and the relative collagen area was decreased(P<0.05).The immunohistochemistry results showed that compared with OIL+PBS group,the α-SMA protein expression level in liver tissue of the mice in CCl?+Exo-GFP mRNA group was significantly increased(P<0.05);compared with CCl4+Exo-GFP mRNA group,the α-SMA protein expression level in liver tissue of the mice in CCl?+Exo-ANGPTL6 mRNA group was significantly decreased(P<0.05).The RT-qPCR results showed that compared with OIL+PBS group,the expression levels of Col1a1,α-SMA,TGF-β1,and TIMP-1 mRNA in liver tissue of the mice in CCl?+Exo-GFP mRNA group were significantly increased(P<0.05);compared with CCl4+Exo-GFP mRNA group,the expression levels of Col1a1,α-SMA,TGF-β1,and TIMP-1 mRNA in liver tissue of the mice in CCl?+Exo-ANGPTL6 mRNA group were significantly decreased(P<0.05).Conclusion:Engineered Exo-delivered ANGPTL6 mRNA injected via the tail vein in the mice is mainly enriched in the liver,and engineered Exo delivery of ANGPTL6 mRNA has an improving effect on liver fibrosis in the mice.

Objective To investigate the role of a novel human-specific long noncoding RNA(lncRNA),MEK6-AS1,and its potential molecular mechanism in improving the osteogenic differentiation of senescent mesenchymal stem cells(MSCs).Methods An in vitro human MSCs replicative senescence model was established by sequen-tial passaging,and then senescence was identified by β staining and senescence-related gene expression.RT-qPCR was used to detect the expression of MEK6-AS1 during senescence and osteogenic differentiation of human MSCs(hMSCs);Lentiviral knockdown technology was used to regulate the expression of MEK6-AS1 in the MSCs replicative senescence model.Transcriptome sequencing technology was utilized to analyze the effects of MEK6-AS1 on the transcriptome of hMSCs especially on genes and pathways related to osteogenic differentiation.The effect of MEK6-AS1 as an intervention target at osteogenic differentiation of human senescent hMSCs was evaluated with alkaline phosphatase staining microscopy.PCR technology was used to detect osteogenic gene expression levels in cells.Results With aging process,the osteogenic differentiation ability of hMSCs decreased significantly while the expression level of MEK6-AS1 was enhanced(P＜0.000 1).Knockdown of MEK6-AS1 significantly enhanced the osteogenic differentiation of MSCs by the up-regulating expression of osteogenic markers and increasing minerali-zation capacity(P＜0.001).Conclusions Knockdown of human-specific lncRNA MEK6-AS1 improves osteogenic differentiation of senescent MSCs,providing a new target and theoretical basis for the treatment of senescence-asso-ciated osteoporosis.

Objective Scutellaria baicalensis stems and leaves glucuronic hydrolase(sbsl GUS)was used to enzymatically hydrolyze scutellarin in Erigeron breviscapus(Vant.)Hand.Mazz.to prepare scutellarein,and the high-purity scutellarein was obtained through separation and purification.Methods Orthogonal experiments were used to optimize the process parameters for the extraction of Erigeron breviscapus(Vant.)Hand.Mazz..Using the rate of enzymatic hydrolysis conversion of scutellarin as the index,the amount of enzyme,pH,temperature,time and antioxidant were investigated,and the preparation process parameters of scutellarein were optimized.Ethanol extraction,activated carbon decolorization,and fractional crystallization were used to purify the crude extract.Results The extraction process was determined to be:segments of Erigeron breviscapus were decocted twice with 10 times water for 1 hour each time.The preparation process of scutellarein was as follows:the amount of sbsl GUS extract and Erigeron breviscapus decoction was 1∶10 based on crude drugs,0.5%sodium metabisulfite was added,pH value was about 6.0,the temperature was about 45℃,and the time was 20 hours.The crude extract of scutellarein with the content more than 60%was obtained.The crude extract was purified by fractional crystallization,refluxed with 80%ethanol,decolorized with activated carbon,concentrated and crystallized,and the scutellarein extract with content more than 85%was obtained.Conclusion sbsl GUS enzymatic hydrolysis technology,which was used to prepare scutellarein,is simple and feasible.This study provides a new way for the manufacture of scutellarein.

OBJECTIVE To analyze the compositional differences between Fructus Tritici Levis and Triticum aestivum， and to provide reference for identification and quality control of both. METHODS Twenty batches of Fructus Tritici Levis and three batches of T. aestivum were collected， and their fingerprints were acquired by high-performance liquid chromatography and the similarities were evaluated by the Evaluation System of Similarity of Chromatographic Fingerprints of Traditional Chinese Medicine （2012 version）. Cluster analysis （CA）， principal component analysis （PCA） and orthogonal partial least squares-discriminant analysis （OPLS-DA） were performed to analyze the difference of Fructus Tritici Levis and T. aestivum from different regions， and the differential components were screened. The contents of the six identified components in Fructus Tritici Levis and T. aestivum were determined. RESULTS The similarities of the fingerprints of Fructus Tritici Levis ranged from 0.928 to 0.996， and the relative similarities of T. aestivum with Fructus Tritici Levis ranged from 0.761 to 0.773. A total of 19 common peaks were calibrated， and six components including linolenic acid， linoleic acid， 5-heptadecylresorcinol， 5-nonadodecylresorcinol， 5- heneicosylresorcinol， and 5-tricosylresorcinol were identified. The results of CA and PCA showed that Fructus Tritici Levis and T. aestivum could be clearly distinguished； the distribution of Fructus Tritici Levis from Anhui province was relatively concentrated. The results of OPLS-DA showed that linolenic acid， linoleic acid， and other six unknown compounds were the differential components between Fructus Tritici Levis and T. aestivum. The average contents of the six identified components in Fructus Tritici Levis were 0.100 9， 1.094 0， 0.005 1， 0.030 9， 0.098 2，and 0.024 8 mg/g， respectively； the contents of linolenic acid and linoleic acid in Fructus Tritici Levis were significantly higher than those in T. aestivum （P＜0.05）.CONCLUSIONS The established qualitative and quantitative methods are simple and reliable， and can be used for the identification and quality evaluation of Fructus Tritici Levis and T. aestivum. The identified differential components， such as linolenic acid and linoleic acid， can also provide clues for the differentiation and pharmacological study of Fructus Tritici Levis and T. aestivum.

OBJECTIVE To analyze the compositional differences between Fructus Tritici Levis and Triticum aestivum， and to provide reference for identification and quality control of both. METHODS Twenty batches of Fructus Tritici Levis and three batches of T. aestivum were collected， and their fingerprints were acquired by high-performance liquid chromatography and the similarities were evaluated by the Evaluation System of Similarity of Chromatographic Fingerprints of Traditional Chinese Medicine （2012 version）. Cluster analysis （CA）， principal component analysis （PCA） and orthogonal partial least squares-discriminant analysis （OPLS-DA） were performed to analyze the difference of Fructus Tritici Levis and T. aestivum from different regions， and the differential components were screened. The contents of the six identified components in Fructus Tritici Levis and T. aestivum were determined. RESULTS The similarities of the fingerprints of Fructus Tritici Levis ranged from 0.928 to 0.996， and the relative similarities of T. aestivum with Fructus Tritici Levis ranged from 0.761 to 0.773. A total of 19 common peaks were calibrated， and six components including linolenic acid， linoleic acid， 5-heptadecylresorcinol， 5-nonadodecylresorcinol， 5- heneicosylresorcinol， and 5-tricosylresorcinol were identified. The results of CA and PCA showed that Fructus Tritici Levis and T. aestivum could be clearly distinguished； the distribution of Fructus Tritici Levis from Anhui province was relatively concentrated. The results of OPLS-DA showed that linolenic acid， linoleic acid， and other six unknown compounds were the differential components between Fructus Tritici Levis and T. aestivum. The average contents of the six identified components in Fructus Tritici Levis were 0.100 9， 1.094 0， 0.005 1， 0.030 9， 0.098 2，and 0.024 8 mg/g， respectively； the contents of linolenic acid and linoleic acid in Fructus Tritici Levis were significantly higher than those in T. aestivum （P＜0.05）.CONCLUSIONS The established qualitative and quantitative methods are simple and reliable， and can be used for the identification and quality evaluation of Fructus Tritici Levis and T. aestivum. The identified differential components， such as linolenic acid and linoleic acid， can also provide clues for the differentiation and pharmacological study of Fructus Tritici Levis and T. aestivum.

Background::There is a need for effective and safe therapies for psoriasis that provide sustained benefits. The aim of this study was to assess the efficacy and safety of tildrakizumab, an anti-interleukin-23p19 monoclonal antibody, for treating moderate-to-severe plaque psoriasis in Chinese patients.Methods::In this multi-center, double-blind, phase III trial, patients with moderate-to-severe plaque psoriasis were enrolled and randomly assigned (1:1) to receive subcutaneous tildrakizumab 100 mg or placebo at weeks 0 and 4. Patients initially assigned to placebo were switched to receive tildrakizumab at weeks 12, 16, and every 12 weeks thereafter. Patients in the tildrakizumab group continued with tildrakizumab at week 16, and every 12 weeks until week 52. The primary endpoint was the Psoriasis Area and Severity Index (PASI 75) response rate at week 12.Results::At week 12, tildrakizumab demonstrated significantly higher PASI 75 response rates (66.4% [73/110] vs. 12.7% [14/110]; difference, 51.4% [95% confidence interval (CI), 40.72, 62.13]; P <0.001) and Physician’s Global Assessment (60.9% [67/110] vs. 10.0% [11/110]; difference, 49.1% [95% CI, 38.64, 59.62]; P <0.001) compared to placebo. PASI 75 response continued to improve over time in both tildrakizumab and placebo-switching to tildrakizumab groups, reaching maximal efficacy after 28 weeks (86.8% [92/106] vs. 82.4% [89/108]) and maintained up to 52 weeks (91.3% [95/104] vs. 87.4% [90/103]). Most treatment-emergent adverse events were mild and not related to tildrakizumab. Conclusion::Tildrakizumab demonstrated durable efficacy through week 52 and was well tolerated in Chinese patients with moderate-to-severe plaque psoriasis.Trial registration::ClinicalTrials.gov, NCT05108766.

Objective To explore the MRI characteristics of neonatal subpial hemorrhage and its relationship with prognosis.Methods A total of 43 newborns with subpial hemorrhage were selected.The original images were observed and analyzed by two radiologists for their radiological characteristics.The prognosis was evaluated using standardized scales such as the Gesell Intelligence Scale,Wechsler Intelligence Scale,and Bayley Intelligence Scale according to age.Results Neonatal subpial hemorrhage could be divided into type Ⅰ,type Ⅱ,and type Ⅲ.Type Ⅰ and type Ⅱ subpial hemorrhage could be completely absorbed without any abnormalities in the brain parenchyma.Type Ⅲ subpial hemorrhage could be completely absorbed and accompanied by varying degrees of cerebral softening and gliosis changes,and some cases may form local subarachnoid cavities.The clinical prognosis of type Ⅰ and type Ⅱ was better than that of type Ⅲ,and the difference was statistically significant(P=0.013).Based on the different signal between subpial hemorrhage and adjacent cortex,subcortical white matter,and deep brain white matter,two MRI features,"yin-yang sign"and"sandwich sign",were proposed.Conclusion The"yin-yang sign"and"sandwich sign"can enhance the understanding and diagnosis of neonatal subpial hemorrhage by radiologists and clinicians.MRI classification can be used as an imaging indicator to predict the prognosis of such hemorrhage.

Objective:To analyze the relevant factors affecting postnatal glucose metabolism in pregnant women with gestational diabetes and construct a nomogram prediction model.Methods:Using a retrospective study method, 210 cases of gestational diabetes patients admitted to Danyang People′s Hospital from March 2019 to November 2021 were selected as the study subjects, and they were divided into 125 cases of normal group and 85 cases of abnormal group according to the postnatal glucose metabolism. The predictive value was analyzed using the subject work characteristics (ROC) curve experiment; the risk factors affecting abnormal postpartum glucose metabolism in pregnant women with gestational diabetes mellitus were analyzed using Logistic regression experiment; and the clinical efficacy of the column-line diagram model was verified using internal data.Results:There was no statistically significant difference between the two groups when comparing the general information such as age ( P>0.05); compared with the normal group, the abnormal group had higher values of total cholesterol (TG), postprandial 2 h blood glucose (OGTT 2 h), glycosylated hemoglobin, and pre-pregnancy body mass index (BMI): (4.23 ± 1.35) mmol/L vs. (3.65 ± 1.50) mmol/L, (9.36 ± 1.25) mmol/L vs. (8.20 ± 1.51) mmol/L, (8.31 ± 2.96)% vs. (6.73 ± 2.23)%, (24.96 ± 4.21) kg/m 2 vs. (23.20 ± 3.25) kg/m 2, and those with a family history of diabetes mellitus were higher: 47.06%(40/85) vs. 20.80%(26/125), there were statistical differences ( P<0.05); the area under the curve (AUC) of TG, OGTT 2 h, glycated hemoglobin, and pre-pregnancy BMI were 0.605, 0.720, 0.670, and 0.616, with optimal cut off values of 4.65 mmol/L, 8.33 mmol/L, 8.06%, and 25.27 kg/m 2; TG (>4.65 mmol/L), OGTT 2 h (>8.33 mmol/L), glycated hemoglobin (>8.06%), and preconception BMI (>25.27 kg/m 2), and family history of diabetes mellitus (yes) were risk factors for abnormal glucose metabolism in pregnant women ( P<0.05); the C-index of the risk of postpartum glucose metabolism in pregnant women with gestational diabetes mellitus predicted by the column chart model was 0.750 (95% CI 0.672 - 0.864). The model predicted that the threshold of the risk of postnatal glucose metabolism in pregnant women with gestational diabetes mellitus was >0.07. Conclusions:TG (>4.65 mmol/L ), OGTT 2 h (>8.33 mmol/L ), glycated haemoglobin (>8.06%), pre-pregnancy BMI (>25.27 kg/m 2), and family history of diabetes (yes) are risk factors for abnormal glucose metabolism in pregnant women, and the model constructed based on the variables have good predictive power.

Celastrol is extracted from the traditional Chinese medicine Tripterygium wilfordii Hook.f..It is a kind of traditional Chinese medicine monomer with extensive pharmacological activity and has anti-tumor,anti-inflammation,anti-oxidation and neuroprotective effects.Studies have found that celastrol is not only closely related to obesity,tumor and cardiovascular diseases,but also plays a neuroprotective role in the cerebrovascular system by regulating various signaling pathways.At present,effective drugs for stroke are still limited,but with the deepening of the research on celastrol,its therapeutic potential in stroke has received more and more attention,especially in ischemic and hemorrhagic stroke,which has shown good therapeutic effects.Therefore,this is the first time to systematically summarize the therapeutic effects of celastrol on stroke and the underlying mechanisms involved,in order to provide further directions and references for the neuroprotective effects of celastrol.