Objective To investigate the feasibility of chest examination using ultra-large pitch Turbo Flash in Force CT in preschool children without sedative.Methods A total of 90 preschool children evaluated as nervous or frightened were equally divided into 3 groups according to the scanning time.For group A,the routine scan with the mode of CARE Dose 4D/CARE kV was performed,and the sedative was used.For group B,the scan with ultra-large pitch Turbo Flash model and pitch as 3.0 was performed,and the sedative was used.For group C,the same scan mode as group B was performed but without sedative.The scanning time,radiation dose,image quality and the diagnostic efficiency were compared among 3 groups.Results There were no significant differences of the CT values of the aorta root,spinal posterior muscles and subcutaneous fat,the noise of the aorta root,SNR and CNR among 3 groups (all P＞0.05).Moreover,no significant differences of the subjective score of image quality in pulmonary window and mediastinum window images were found among 3 groups (both P＞0.05).The scanning time and radiation dose indexes (CT dose index volume [CTDIvo1],doselength product [DLP],effective dose [ED]) of group A were significantly higher than those of group B and group C (all P ＜0.05),while there were no significant differences between group B and group C (all P＞0.05).There were no significant differences between the CT diagnosis and clinical diagnosis results in all 3 groups (all P＞0.05).Conclusion It can shorten the scanning time and decrease the radiation dose by using the mode of ultra-large pitch Turbo Flash.And the satisfactory image quality can be obtained without sedative for nervous or frightened preschool children.

Objective To summarize experiences associated with hepatectomy of huge liver neoplasm.Methods Two hundred and sixty six consecutive cases of huge liver neoplasm undergoing hepatectomy from January 1987 to December 2005 at Chinese PLA General Hospital were analized retrospectively based on the clinical data.Results There were 174 males and 92 females with the average age of(44.8 ± 12.2)years(range 7-76 yrs).Among them,93 cases were with benign neoplasms.The maximum diameter of tumors was 30 cm and hemangioma accounted for 86.0%(80 cases).The other 173 cases were huge liver malignant neoplasms with the maximum diameter of 33 cm,hepatocellular carcinoma accounted for 73.4%(127 cases).The average diameter of all tumors was(14.7 ±4.0)cm(range 10.2-33.0 cm).HBsAg(+)was found in 40.49% of cases.Numbers of resected segments averaged(3.3 ±1.2)in benign cases and(3.1 ±1.2)in malignant ones without significant difference between the two groups(t=1.710,P=0.310).Postoperative complications occurred in 17.29% of cases and the hospital mortality was 0.75%.The postoperative 1-,3-and 5-year survival rates in patients with malignant liver tumors were 58.3%,39.7% and 27.5%,respectively.Conclusions Hepatectomy of huge liver benign and malignant neoplasms can be performed safely with low morbidity and mortality,provided that it is carried out with skillful surgical expertise and optimized perioperative management.

The purpose of this study was to clone human HSP90beta cDNA and construct its eukaryote expression vector . The total RNA was isolated by TRIzol Reagent (Invitrogen) from human NPC and its cDNA was gained by RT-PCR. The purified RT-PCR products and PGEM-T Easy Vector were ligated and transformed into XL1-blue E. coli bacteria. The white clones were selected and the plasmid was purified, which was further identified by double enzyme digestion and sequenced. PGEM-hHSP90beta and pcDNA3.1(+) DNA were digested by AflII and Xbal respectively. After purification, the two fragments obtained were ligased by using T4 DNA ligase (Fermentas). This recombinant DNA was then transformed into E. coli Competent Cells XL1-blue and positive clones were selected on the LB agarose plate containing Ampr (100 microg/ml). Single clones were identified by double digestion with AflII and Xbal, and two fragments with the size 5.4 kb and 2.1 kb were produced as expected. The hHSP90beta gene was successfully inserted into the eukaryote expression vector pcDNA3.1(+) by the recombination technique in vitro.
Cloning, Molecular ; DNA, Complementary ; genetics ; Escherichia coli ; genetics ; metabolism ; Genetic Vectors ; HSP90 Heat-Shock Proteins ; biosynthesis ; genetics ; Humans ; Plasmids ; genetics ; Recombinant Proteins ; biosynthesis ; genetics

Objective To investigate the influence factors of periprostatic nerve block (PNB) anaesthesia.Methods A total of 375 patients who underwent prostate biopsy under PNB were analyzed retrospectively from July 2014 to February 2018.It was evaluated the correlation of the anesthetic efficacy of PNB with age,prostate volume,PSA,body mass index,spouse,degree of education,occupation,diabetes history,operation time,number of cores and clinical stage.A visual analog scale (VAS) were used to assess pain of the patients.Univariate analysis was performed for each factor.Factors found to be significantly different that were further analyzed using multiple linear regression analysis.Results The average VAS score of all patients was 2.5 ± 1.4.Univariate analysis showed that the following factors were associated with the anesthetic efficacy of PNB:age (F =2.262,P =0.029),prostate volume (F =2.529,P =0.011),occupation (F =2.203,P =0.042),operation time (F =2.233,P =0.033),number of cores (F =2.401,P =0.016) and diabetes history (F =2.271,P =0.027).Multiple linear regression analysis showed that prostate volume (t =3.742,P ＜ 0.001),number of cores (t =4.252,P ＜ 0.001) and diabetes history (t =-2.242,P =0.032) were independent factors.The VAS score of patients with large volume prostate was higher than that of small volume prostate.The number of cores was high,and the VAS score was higher.However,diabetic patients had lower VAS score.Conclusions The anesthetic efficacy of PNB was poor in patients with larger prostate volume and more number of cores.However,patients with chronic diabetes had better pain tolerance.

Beijing has been one of the epicenters attacked most severely by the SARS-CoV (severe acute respiratory syndrome-associated coronavirus) since the first patient was diagnosed in one of the city's hospitals. We now report complete genome sequences of the BJ Group, including four isolates (Isolates BJ01, BJ02, BJ03, and BJ04) of the SARS-CoV. It is remarkable that all members of the BJ Group share a common haplotype, consisting of seven loci that differentiate the group from other isolates published to date. Among 42 substitutions uniquely identified from the BJ group, 32 are non-synonymous changes at the amino acid level. Rooted phylogenetic trees, proposed on the basis of haplotypes and other sequence variations of SARS-CoV isolates from Canada, USA, Singapore, and China, gave rise to different paradigms but positioned the BJ Group, together with the newly discovered GD01 (GD-Ins29) in the same clade, followed by the H-U Group (from Hong Kong to USA) and the H-T Group (from Hong Kong to Toronto), leaving the SP Group (Singapore) more distant. This result appears to suggest a possible transmission path from Guangdong to Beijing/Hong Kong, then to other countries and regions.
Genome, Viral ; Haplotypes ; Humans ; Mutation ; Open Reading Frames ; Phylogeny ; SARS Virus ; genetics

ObjectiveTo observe the effects of Shenbai Jiedu prescription on fecal metabolomics and intestinal flora diversity distribution in patients with colorectal adenoma and explore its potential targets. MethodA total of 21 patients diagnosed with colorectal adenoma were enrolled in this study. Following a four-week administration of Shenbai Jiedu prescription， their clinical symptoms were observed， and fecal samples of patients before and after treatment were collected. Untargeted metabolomics and metagenomic analysis based on liquid chromatography-mass spectrometry （LC-MS） were employed to investigate the possible metabolic pathway of Shenbai Jiedu prescription and its influence on the distribution of intestinal flora in patients. ResultThe total scores of traditional Chinese medicine （TCM） syndromes of patients after drug administration decreased significantly （P<0.01）. The results of untargeted metabolomics showed that the distribution of metabolites exhibited aggregation before and after drug administration， and a total of 106 differential metabolites were screened out （P<0.05）. The Kyoto encyclopedia of genes and genomes （KEGG） enrichment analysis revealed that arginine-proline metabolism， ferroptosis， glycine， and serine and threonine metabolism were significantly enriched metabolic pathways （P<0.05）. Notably， L-4-hydroxyglutamate semialdehyde， glutathione， isopentenyl pyrophosphate， creatinine， 4-acetamido-2-aminobutanoic acid， and guanidoacetic acid were found to be involved in these aforementioned metabolic pathways. Furthermore， the association between these metabolites and different intestinal flora was analyzed， and the results showed that Shenbai Jiedu prescription could interfere with metabolic pathways such as amino acid and ferroptosis in patients with colorectal adenoma by regulating intestinal flora such as Lachnoclostridium， Eggerthella， and Dialister （P<0.05）. ConclusionShenbai Jiedu prescription may improve the clinical symptoms of patients by increasing the abundance of intestinal beneficial bacteria， reducing the abundance of harmful bacteria， and regulating metabolic pathways such as amino acid and ferroptosis in patients with colorectal adenoma. This study may provide some research ideas and directions for Shenbai Jiedu prescription to interfere with colorectal adenoma recurrence and carcinogenesis.

ObjectiveTo explore the biological foundation of colorectal adenoma in damp-heat accumulation syndrome and the possible anti-tumor mechanism of Shenbai Jiedu prescription. MethodEight patients with colorectal adenoma in damp-heat accumulation syndrome， 11 patients with non-damp-heat accumulation syndrome， and 10 patients with colorectal cancer recruited by Jiangsu Provincial Hospital of Traditional Chinese Medicine from February 2019 to December 2020 meeting the inclusion criteria were clinically obtained， and the tissue of the three groups of patients was subjected to transcriptome sequencing to screen for the differentially expressed genes between the syndrome and the diseases. The intersection of the differentially expressed genes between the syndrome and the disease was taken for further screening of the differentially expressed genes sequentially increasing or sequentially decreasing in patients with non-damp-heat accumulation syndrome， damp-heat accumulation syndrome， and colorectal cancer， and functional enrichment analysis and signaling pathway enrichment analysis were carried out. Real-time polymerase chain reaction （Real-time PCR） was used to detect the effect of Shenbai Jiedu prescription on the expression of the above key differential genes. ResultBy comparing the damp-heat accumulation syndrome and non-damp-heat accumulation syndrome， a total of 384 differentially expressed genes were screened， of which 203 were up-regulated genes， and 181 were down-regulated genes. By comparing the colorectal adenoma of colorectal cancer and damp-heat accumulation syndrome， a total of 2 965 differentially expressed genes were screened， of which 2 460 were up-regulated genes， and 505 were down-regulated genes. The intersection of differentially expressed genes of the two groups was taken， and a total of 58 differentially expressed genes with the same changes were screened. The gene ontology functions were mainly enriched in UDP-galactose： β-N-acetylglucosamine beta-1，3-galactosyltransferase activity， N-acetyllactosaminide beta-1，3-N-acetylglucosaminyltransferase activity， and poly-N-acetyllactosamine biosynthetic process. Kyoto Encyclopedia of Genes and Genomes （KEGG） signaling pathways were mainly enriched in glycosphingolipid biosynthesis-globo and isoglobo series， glycosphingolipid biosynthesis-lacto and neolacto series， and IL-17 signaling pathway. Shenbai Jiedu prescription significantly inhibited the expression of key genes involved in the enrichment， such as FOSB and B3GALT5， in a dose-dependent manner （P<0.05）. ConclusionGlycolipid metabolism may be the biological foundation of colorectal adenoma in damp-heat accumulation syndrome， and Shenbai Jiedu prescription may inhibit colorectal adenoma carcinogenesis by down-regulating the expression of FOSB and B3GALT5.

Colorectal adenoma is a benign tumor originating from the mucosal glandular epithelium of the colorectum and belongs to the category of intraepithelial neoplasia. Its etiology and pathogenesis are not completely clear， and some patients have genetic factors. In recent years， with the improvement in living standards， the incidence of colorectal adenoma has gradually increased due to high-fat diets， intestinal flora disorder， and emotional disturbance. As one of the precancerous lesions of colorectal cancer， colorectal adenoma is increasingly threatening human health. Surgical resection is the most direct and effective method for the treatment of colorectal adenoma， but some patients with colorectal adenoma have the possibility of recurrence after resection. At present， there is still a lack of effective prevention and treatment measures for the recurrence of colorectal adenoma. Traditional Chinese medicine （TCM） plays a unique advantage in improving the clinical symptoms of patients with colorectal adenoma and preventing postoperative recurrence and carcinogenesis. Therefore， this review summarized the clinical research and mechanism of TCM compounds in the prevention and treatment of colorectal adenoma in recent years. The clinical study on the prevention and treatment of colorectal adenoma by TCM compounds can be divided into internal treatment， external treatment， and internal and external combined treatment. The internal treatment mainly focuses on strengthening the spleen， and the external treatment includes retention enema， acupoint application， and other methods. The internal and external combined treatment is mainly based on the internal administration of TCM compounds combined with acupuncture， retention enema， and acupoint stimulation. The study on the mechanism of TCM compounds in preventing and treating colorectal adenoma was mainly explored from the aspects of regulating intestinal flora， regulating cell proliferation immune function， and achieving anti-inflammation. This review summarized the research progress of TCM compounds in the prevention and treatment of colorectal adenoma in recent years and provided a reference for future treatment with TCM.