Objective:To observe the tracer effect of indocyanine green (ICG) surgical coaxial fluorescence projective imaging system (CFPI) and methylene blue (MB) staining method in the sentinel lymph node biopsy (SLNB) of acral malignant melanoma.Methods:Data of patients with acral malignant melanoma requiring SLNB diagnosed in the First Affiliated Hospital of University of Science and Technology of China from March 2020 to October 2022 were retrospectively analyzed. Both ICG and MB were injected intraoperatively to trace the sentinel lymph node (SLN), and SLNB was performed according to fluorescent labeling. Numbers of SLN and metastatic SLN deteted by ICG, MB, ICG combined with MB during operation were recorded. Statistical analysis was performed using Graphpad Prism 6 software, and the detected number of SLN was expressed as Mean±SD, and paired t-test was performed. The detection rate of SLN was expressed by % and χ2 test was used. P<0.05 was considered statistically significant. Results:A total of 21 patients were included, and 62 SLNs were detected, among which 58 (93.5%) were detected by ICG, 41 (66.1%) by MB, and 62 (100.0%) by ICG combined with MB, respectively. The detection rate of ICG was significantly higher than that of MB, with statistical significance ( χ2=22.34, P=0.001). The detected numbers of SLNs by ICG, MB, ICG combined with MB were (2.76±0.23), (1.95±0.21) and (2.95±0.25) /per person, respectively. ICG was significantly more than MB, and the difference was statistically significant ( t=2.60, P=0.013). A total of 10 metastatic SLNs were detected, of which 10 were detected by ICG, 7 by MB, and 10 by ICG combined with MB. Conclusion:Compared with MB, ICG CFPI showed better performance in SLNB, and ICG combined with MB showed better performance than ICG alone.

Objective:To observe the tracer effect of indocyanine green (ICG) surgical coaxial fluorescence projective imaging system (CFPI) and methylene blue (MB) staining method in the sentinel lymph node biopsy (SLNB) of acral malignant melanoma.Methods:Data of patients with acral malignant melanoma requiring SLNB diagnosed in the First Affiliated Hospital of University of Science and Technology of China from March 2020 to October 2022 were retrospectively analyzed. Both ICG and MB were injected intraoperatively to trace the sentinel lymph node (SLN), and SLNB was performed according to fluorescent labeling. Numbers of SLN and metastatic SLN deteted by ICG, MB, ICG combined with MB during operation were recorded. Statistical analysis was performed using Graphpad Prism 6 software, and the detected number of SLN was expressed as Mean±SD, and paired t-test was performed. The detection rate of SLN was expressed by % and χ2 test was used. P<0.05 was considered statistically significant. Results:A total of 21 patients were included, and 62 SLNs were detected, among which 58 (93.5%) were detected by ICG, 41 (66.1%) by MB, and 62 (100.0%) by ICG combined with MB, respectively. The detection rate of ICG was significantly higher than that of MB, with statistical significance ( χ2=22.34, P=0.001). The detected numbers of SLNs by ICG, MB, ICG combined with MB were (2.76±0.23), (1.95±0.21) and (2.95±0.25) /per person, respectively. ICG was significantly more than MB, and the difference was statistically significant ( t=2.60, P=0.013). A total of 10 metastatic SLNs were detected, of which 10 were detected by ICG, 7 by MB, and 10 by ICG combined with MB. Conclusion:Compared with MB, ICG CFPI showed better performance in SLNB, and ICG combined with MB showed better performance than ICG alone.

The identification of oleaginous yeast species capable of simultaneously utilizing xylose and glucose as substrates to generate value-added biological products is an area of key economic interest. We have previously demonstrated that the Cutaneotrichosporon dermatisNICC30027 yeast strain is capable of simultaneously assimilating both xylose and glucose, resulting in considerable lipid accumulation. However, as no high-quality genome sequencing data or associated annotations for this strain are available at present, it remains challenging to study the metabolic mechanisms underlying this phenotype. Herein, we report a 39,305,439 bp draft genome assembly for C. dermatis NICC30027 comprised of 37 scaffolds, with 60.15% GC content. Within this genome, we identified 524 tRNAs, 142 sRNAs, 53 miRNAs, 28 snRNAs, and eight rRNA clusters. Moreover, repeat sequences totaling 1,032,129 bp in length were identified (2.63% of the genome), as were 14,238 unigenes that were 1,789.35 bp in length on average (64.82% of the genome). The NCBI non-redundant protein sequences (NR) database was employed to successfully annotate 11,795 of these unigenes, while 3,621 and 11,902 were annotated with the Swiss-Prot and TrEMBL databases, respectively. Unigenes were additionally subjected to pathway enrichment analyses using the Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG), Cluster of Orthologous Groups of proteins (COG), Clusters of orthologous groups for eukaryotic complete genomes (KOG), and Non-supervised Orthologous Groups (eggNOG) databases.Together, these results provide a foundation for future studies aimed at clarifying the mechanistic basis for the ability of C. dermatis NICC30027 to simultaneously utilize glucose and xylose to synthesize lipids.

Objective To investigate the effects RORrt (RORrt),IRF8 (IRF8) and STAT3 (STAT3) in peripheral blood CD4+T cells on the cell proliferation and differentiation in elderly patients with iron-overload myelodysplastic syndrome(MDS).Methods A prospective case-control study was conducted.Twenty-two elderly hospitalized patients(12 males and 10 females)aged 60-78 years with iron-overload MDS from Jan.2017 to Dec.2018 were enrolled and considered as the observation group.Twenty MDS patients without iron overload hospitalized in the same period were selected as the non-iron overload group,and 26 healthy elderly people were considered as the healthy control group.Peripheral blood monocytes(PBM)were prepared and resident CD4+T cells were sorted by flow cytometry.The mRNA and protein expression levels of transcription factors of RORrt,p-STAT3 and IRF8 were detected by quantitative real time polymerase chain reaction(qRT-PCR)and Western blotting.Results In peripheral blood CD4+T cells,the mRNA expression level of RORrt and p-STAT3 were higher and that of IRF8 was lower in the iron-overload group than in the non-iron overload group and the healthy control group(42.634± 18.613 vs.21.289 ± 15.158 and 22.520 ± 9.896;29.710±9.689 vs.12.355±4.681 and 9.818±3.845;19.293±8.258 vs.23.785±12.498 and 69.619±23.768,P＜0.01).In peripheral blood CD4+T cells,the protein expression level of RORrt and p-STAT3 was higher,and that of IRF8 was lower in the iron overload group than in the non-iron overload group and healthy control group(P＜0.01).Conclusions The abnormalities of the mRNA and protein expression levels of transcription factors of RORrt,IRF8 and p-STAT3 in CD4+ T cells play a fundamental role in the pathogenesis of iron overload MDS in elderly patients.

Objective To study the significance of Th17 cells in patients with myelodysplastic syndrome (MDS) and iron overload.Methods A total of 77 patients with MDS admitted to Guangzhou First People's Hospital were enrolled from January 2017 to December 2018,who were divided into iron overload group (37 cases) with serum ferritin (SF) over 1000 μg/L and non-ferrous overload group(40 cases).CD4+T cells in peripheral blood (PB) and bone marrow (BM) were sorted by flow cytometry.The ratio of Th17 cells and cells with abnormal karyotype were compared.IL-17 and IL-6 protein and RNA expression were detected by ELISA and quantitative real-time PCR(qRT-PCR).Results The proportions of Th17 cells in PB and BM in iron overload group were significantly higher than those in non-iron overload group [(41.06± 0.96)％ vs.(26.80± 1.21)％;(47.39± 1.60)％ vs.(34.29± 1.03)％;P＜0.01].The Th17 positive cells with abnormal karyotype in iron overload group were more than those in non-iron overload group[(4.96±0.53)％ vs.(3.67±0.12)％ in PB;(10.06±1.67)％ vs.(4.36±0.43)％ in BM;P＜0.01].Similarly,the protein levels as well as mRNA expression of IL-6 and IL-17 in patients with iron overload were significantly higher than those in non-iron overload group (P＜0.01 both in PB and BM).Conclusions As hematopoietic regulators secreted by Th17 cells,the expression of IL-6 and IL-17 in MDS patients with iron overload are elevated.This may predict the influence of these factors to the differentiation of Th 17 cells.

Objective To investigate the multimodal imaging characteristics of central serous chorioretinopathy (CSC) converted to polypoidal choroidal vasculopathy (PCV) and pachychoroidal neovascularization(PNV).Methods A retrospective case series study was adopted.The clinical data of 91 eyes from 79 patients with CSC who received treatment from June 2009 to September 2017 in Shenzhen Eye Hospital were analyzed.Color fundus photography,fundus fluorescein angiography (FFA),spectral domain optical coherence tomography (SD-OCT) and indocyanine angiography (ICGA) were performed in the patients.The eyes with recurrence or maintained serous retinal pigment epithelium (RPE) after treatment were examined once more.Results In 91 eyes,11 eyes of 9 patients converted to PNV.Late stage of FFA showed multifocal hyperfluorecnece in macular area.ICGA showed plaque hyperflurorescence overlying dilated choroidal vessel.OCT revealed irregular flap shallow RPE detachment with retinal neurosensory detachment.OCTA revealed mass-like enlarged choroidal vessel between RPE and Bruch membrane.Nine eyes of 7 patients with CSC converted to PCV,and late stage of FFA showed serous-hemorrhage pigment epithelium detachment(PED) and multifocal enlargement hyperfluorecnece.ICGA showed branch vessels network (BVN) with small polyps.OCT revealed PED like thumb with double-layer sign and retinal neurosensory detachment.OCTA en-face revealed BVN with small polyps at choroidal capillaries layer.The baselines BCVA of PCV and PNV (LogMAR) was 0.282±0.220 and 0.413±0.190,respectively with a significant difference between them (t =0.037,P ＜ 0.05).Subfoveal choroidal thickness (SFCT) of CSC,PCV and PNV patients was (373.61 ±65.11),(296.22 ±30.24) and (328.63 ±76.18) μm,with siginificant differences among them (F =3.48,both at P＜0.05).SFCT of PNV patients was thicker than that of PCV patients,with a significant difference between the two groups (t =2.91,P＜0.05).Conclusions Chronic or recurrence CSC is probably to develop to PNV,and the PNV with serous or hemorrhage PED is probably to switch to PCV.Multimodal imaging examination is helpful to the diagnosis of PNV and PCV.

Objective To establish a mice model of diffuse large B-cell lymphoma (DLBCL) that was treated with adoptive immunity of Th17 cells cultured in vitro,and to analyze the relationship between IL-17 and MHC Ⅱ expression and their relation with tumor growth.Methods The CD4+CD62L+ T cells purified by MACS were stimulated under cytokine conditions including anti-CD3,anti-CD28,TGF-β and IL-6 in vitro,and SUDHL-4 cells were cultured and inoculated the SCID mice to establish DLBCL mice models.The mice were divided into Th17 cells immunity group (30 mice) and control group (20 mice).Th17 cells were injected to mice to get the adoptive immunity in immunity group,and 0.9 ％ NaCl in control group.The half mice were terminated at median disease onset time and median survival time,respectively.ELISA was used to detect IL-17 expression,and immunohistochemistry was applied to detect MHC Ⅱ expression in the tumor tissues.Results The median disease onset time of DLBCL mice model was 8 d,and median survival time was 28 d.The IL-17 and MHC Ⅱ expression levels in Th17 cells immunity group [(11.93±0.56) pg/ml,(69.13t0.36) ％] were higher than those in control group [(9.82±0.26) pg/ml,(42.59±0.12) ％] (both P＜ 0.000 1).Along with the progress of DLBCL,IL-17 and MHC Ⅱ expression levels were decreased [(9.53±0.18) pg/ml,(54.63±0.45) ％,both P ＜ 0.000 1].There was a significantly positive correlation between IL-17 and MHC Ⅱ (r=0.89,P=0.000).Conclusions The expression level of MHC Ⅱ can be used as a factor to judge the disease situation of DLBCL,and combination detection of the expression of both IL-17 and MHC Ⅱ will provide more reference values for judgment of the disease situation and the progress of DLBCL.

Objective To compare the setup errors of two position fixation, head-neck-shoulders immobilization system and trunk immobilization system in radiotherapy for esophageal cancer, and to provide technical guidance for the fixed modes and determination of plan target volume (PTV) in the intensity modulated radiation therapy (IMRT) of esophageal cancer. Methods 97 thoracic esophageal cancer patients treated with radiotherapy were collected and divided into two groups: head-neck-shoulders group (51 patients immobilized with head-neck-shoulders immobilization system) and trunk group (the other 46 patients immobilized with trunk immobilization system). Before the weekly radiotherapy, all the patients received cone-beam CT (CBCT) scan to get the setup errors of X axis (left and right), Y axis (head and foot) and Z axis (front and back) on line. Results In the head-neck-shoulders group, the errors in X, Y and Z direction were (0.333 ±0.400) cm, (0.333 ±0.291) cm and (0.238 ±0.256) cm, respectively. In trunk group, the errors were (0.327±0.255) cm, (0.582±0.501) cm and (0.189±0.154) cm, respectively. There were statistically significant differences in the setup errors in Y axis and Z axis between the head-neck-shoulders group and the trunk group (P< 0.05). Conclusions In the radiotherapy for thoracic esophageal carcinoma, there is no difference in the X axis setup error between head-neck-shoulders system and trunk immobilization system. The Y axis setup error of head-neck-shoulders group is less than that of the trunk group. The Z axis setup error of trunk group is less than the head-neck-shoulders group.

OBJECTIVETo study the clinical efficacy of three dimensional visualization technique assisted hepatectomy for the treatment of primary liver cancer.

METHODSA total of 108 primary liver cancer patients who had been admitted to Zhujiang Hospital of Southern Medical University from September 2013 to December 2014 were assigned to three dimensional visualization technique assisted hepatectomy group (n = 55) and routine hepatectomy group (n = 53) according to different methods of hepatectomy. The observed variable in two groups as fellow: the operative time, intraoperative blood loss, intraoperative blood transfusion, the change of postoperative liver function and biochemical indicators in 1, 3, 5 days, postoperative complication. The patients were followed up via-return visit or telephone.A student's t test was used to compare continuous parametric variables, and the Mann-Whitney U test was used to compare non-parametric or discrete variables, as appropriate. Categorical data were compared using the Chi-square test or Fisher's exact test.

RESULTSIn 3D group and routine hepatectomy group, the patients' intraoperative blood transfusion volume were 300 ml (200-600 ml) and 400 ml (300-700 ml) (χ² = -2.609, P = 0.009) respectively, intraoperative blood loss volume were 400 ml (250-600 ml) and 550 ml (400-800 ml) (χ² = -2.277, P = 0.023), the operative time were (247 ± 57) min and (262 ± 53) min (χ² = -1.787, P = 0.074), the deterioration of the mainly liver function indicators peak in routine hepatectomy group were higher than that in 3D group (P < 0.05). The ALT, AST, TBIL in 3D group were lower than that in routine group on postoperative day 1, 3, 5, respectively (χ² = -5.740- -0.692, all P < 0.05). The ALB in 3D group was higher than that in routine group on postoperative day 3, 5 ((33.0 ± 5.6) g/L vs. (31.2 ± 4.1) g/L, (36.7 ± 4.4) g/L vs. (34.7 ± 4.2) g/L) (t = 1.922-2.573, both P < 0.05). In 3D group and routine hepatectomy group, the incidence of postoperative complications were 10.9% and 30.1% (χ² = 6.185, P = 0.013), the length of postoperative hospital day were (12.6 ± 3.6) days and (14.4 ± 3.5) days (χ² = -3.384, P = 0.031), the positive rate of resection margin were 0 and 9.4% respectively (Fisher test: P = 0.026), the 1-year tumor recurrence rate were 22.2% and 37.5% (P > 0.05), 1-year survival rate was 82.2% and 77.5% (P > 0.05). No perioperative mortality was occured in the two groups.

CONCLUSIONThree dimensional visualization technique assisted hepatectomy for the treatment of primary liver cancer could reduce surgical injury, lower the rate of postoperative complications, improve the safety and the efficacy of the operation and achieve a good prognosis.

Blood Loss, Surgical ; Blood Transfusion ; Chi-Square Distribution ; Hepatectomy ; methods ; Humans ; Imaging, Three-Dimensional ; Liver Neoplasms ; surgery ; Neoplasm Recurrence, Local ; Operative Time ; Postoperative Complications ; Survival Rate

Objective To study the relationship between asthma and mRNA expression of β_2AR and IL-12 gene;to determine the expression level of β_2AR, IL-12 related to CysLT_1-receptor;to analyze the correlation between the severity of asthma and the level of the genes expression. Methods White blood cells was drawn from peripheral blood mononuelear cells of asthmatic children. DNA was taken and related genes were analyzed for half quantitative analysis by D-congeal glue analyzer software. Results The level of IL-12. β_2AR mRNA expression in the asthma group is obviously lower than healthy controls (P < 0.01) ;when asthma attacks, the expression of IL-12 is positively correlated to that of β_2AR (r = 0.34, P = 0.001) and negatively correlated to that of CysLT_1-receptor (r = -0.92, P = 0.001), the expression of β_2AR is negatively correlated to the expression of CysLT_1-receptor (r = -0.85, P = 0.003). The express of IL-12 is not related to the severity of asthma (P = 0.16), while there was a negative correlation between the expression of β_2AR and the severity of asthma (P = 0.003). Conclusions The expression level of IL-12, β_22AR in the asthmatic children is obviously lower than normal;The expression level of IL-12 is positively correlated to β_2AR in PBMC of asthmatic children;The expression level of CysLT_1-receptor is negatively correlated to IL-12 and β_2AR in the PBMC of asthmatic children;The expression of β_2AR is negatively correlated to the severity of asthma.