Objective : To investigate the effects of microRNA-29a(miR-29a) in mediating the regulation of dihydroartemisinin(DHA) on the immune checkpoint molecule B7H3 in lung adenocarcinoma(LUAD). Methods: The expression level and prognostic significance of B7H3 in LUAD were analyzed by public database. Small interfering RNA(siRNA) was used to knock down B7H3 in LUAD cell lines A549 and HCC827, and cell proliferation was detected by CCK-8 method. A549 and HCC827 cells were treated with gradient concentrations of DHA(0, 5, 10, 25, 50, 100 μmol/L) for 48 h, and the half maximal inhibitory concentrate(IC50) was calculated. A549 and HCC827 cells were treated with IC50concentration of DHA for 1, 2 and 3 days, and the cell proliferation was detected by CCK-8 method. A549 and HCC827 cells were transfected with miR-29a inhibitor. After DHA treatment, the expression level of miR-29a was detected by RT-qPCR, and the expression level of B7H3 was detected by Western blot. Results : B7H3 was overexpressed in LUAD and associated with poor prognosis. After knocking down of B7H3, the proliferation ability of A549 and HCC827 cells significantly decreased(allP<0.001). DHA inhibited the proliferation of A549 and HCC827 cells in both dose-and time-dependent manners, with IC50values of 30.16 μmol/L and 7.50 μmol/L, respectively. DHA up-regulated the expression of miR-29a in A549 and HCC827 cells(P<0.001,P<0.01), and down-regulated the expression of B7H3 in both cell lines(P<0.01,P<0.001). After transfection of miR-29a inhibitor into A549 and HCC827 cells, the expression of B7H3 was up-regulated, and the down-regulation of B7H3 by DHA was partially reversed. Conclusion miR-29a mediates the molecular regulation of DHA on B7H3 in LUAD.

Objective To investigate the clinical characteristics in an elderly patient with sellar multiple myeloma.Methods Clinical features,laboratory data and radiologic profile of an elderly patient with sellar multiple myeloma were collected.Results The patient was an 85-year-old male.The main clinical manifestations were fatigue,poor appetite and polyuria.Laboratory examinations showed a significant decrease in blood sodium,several anterior pitu-itary hormones and an increase in total protein,mass of pituitary lesion and concentration of prolactin.During etio-logical screening,it was found that the blood immunoglobulin G(IgG)level was significantly increased,the blood M protein was positive and the bone marrow smear showed myeloma cells accompanied by multiple osteolytic lesions in the bones of the whole body.Considering the diagnosis of multiple myeloma,the pituitary lesion was likely to be the extra-medullary involvement.Conclusions The intrasellar plasmacytoma is not common.The disease onset is insidious with clinical features and imaging findings lacking specificity.Therefore,diagnosis relies on biopsy which poses risks for elderly patients and increases diagnostic challenges leading to misdiagnosis.

Objective : To establish an enzyme-linked immunosorbent assay (ELISA) for exosome B7-H3 in plas- ma , and to explore the clinical significance and diagnostic value of exosome B7-H3 in plasma from non-small cell lung cancer (NSCLC) . Methods : The plasma of 70 NSCLC patients (NSCLC group) and 36 healthy controls (HC group) were collected . Exosomes and microvesicles in plasma were separated by ultra-fast centrifuge method , and the expression levels of B7-H3 in plasma exosomes in NSCLC groups and HC groups were compared by Western blot method . In NSCLC group , the expression levels of B7-H3 in plasma exosomes and microvesicles in NSCLC group were compared . A simple and feasible ELISA method was established to detect the expression level of exosome B7 - H3 in plasma by means of polyethylene glycol (PEG) precipitation and its clinical significance was analyzed . Lo- gistic regression model was established to predict plasma-derived exosome B7-H3 as a risk factor , and receiver op- erating characteristic curve (ROC) was used to investigate the diagnostic value of exosome B7-H3 in NSCLC . Results: For exosomes and microvesicles in plasma which were extracted by ultracentrifugation , Western blot results showed that the expression level of B7-H3 in plasma exosomes of NSCLC group was higher than that of HC group (P = 0. 032) , and the expression level of B7-H3 in plasma exosomes was higher than that of microvesicles of NSCLC group (P = 0. 012) . The expression level of exosome B7-H3 in plasma extracted by PEG precipitation was also higher in NSCLC group than that in HC group (P = 0. 024) . The expression level of exosome B7-H3 in plasma of NSCLC patients was not related to gender , age , smoking or pathological type , but was related to T stage (P = 0. 002) , N stage (P < 0. 001) , M stage (P = 0. 010) and AJCC stage (P < 0. 001) . Multivariate Logistic regres- sion analysis identified exosome B7-H3 in plasma as a risk factor for NSCLC . ROC analysis showed that the sensi- tivity of exosome B7-H3 in plasma for the diagnosis of NSCLC (0. 843) was higher than that of carcinoembryonic antigen (CEA) (0. 743) , whereas the specificity (0. 722) was lower than that of CEA (0. 833) . Combined de- tection of exosome B7-H3 and CEA (AUC = 0. 928 , 95% CI:0. 877 - 0. 979) had a higher diagnostic performance for NSCLC . Conclusion B7-H3 in plasma exosomes is related to the cancer staging of NSCLC , and the combined detection of exosome B7-H3 and CEA in plasma is conducive to the laboratory diagnosis of NSCLC .

Objective: To investigate the role of murine double minute 2(MDM2) in dihydroartemisinin′s(DHA) inhibition of lung adenocarcinoma cell proliferation and migration. Methods: CCK8 assay was used to detect the inhibitory effect of gradient concentrations of DHA(0, 5, 10, 25, 50 and 100 μmol/L) and time gradients(0, 24, 48, and 72 h) on the proliferation of lung adenocarcinoma A549 and PC9 cells, and the half maximal inhibitory concentrate(IC50) were calculated respectively. Colony formation and scratch assays were used to detect the inhibitory effects of DHA on colony formation and migration of A549 and PC9 cells. Western blot was used to detect the inhibitory effects of DHA on MDM2 expression and epithelial-mesenchymal transition(EMT)-related proteins E-cadherin and N-cadherin. The promoting effects of MDM2 on proliferation, migration and EMT of lung adenocarcinoma cells were verified by small interfering RNA-mediated knockdown of MDM2(si-MDM2). The reversal effects of MDM2 overexpression on DHA′s inhibition on the proliferation and migration of A549 and PC9 cells were observed. Results: DHA inhibited the proliferation of A549 and PC9 cells in a dose⁃ and time⁃dependent manner,with IC50 values of 30. 57 and 78. 61 μmol/L , respectively. Compared with the Control group , A549 and PC9 cells had significantly decreased colony formation (both P < 0. 01) and migration (both P < 0. 01) upon treatment with DHA. Moreover, DHA significantly inhibited the protein expression levels of MDM2 and N ⁃cadherin in A549 and PC9 cells , and upregulated the expression of E ⁃cadherin protein (both P < 0. 05) . Compared with si⁃Control ,si⁃MDM2 significantly inhibited the protein levels of MDM2 and N ⁃cadherin in A549 and PC9 cells , and upregulat⁃(both P < 0. 01) of both cells. After overexpression of MDM2 in A549 and PC9 cells , the proliferation and migra⁃ tion ability were significantly enhanced (both P < 0. 05) , and the inhibitory effects of DHA were partially reversed by MDM2 overexpression (both P < 0. 05) . Conclusion DHA effectively inhibits the proliferation and migration of lung adenocarcinoma cells , and its mechanism is associated with the suppression of MDM2.

Objective To investigate the regulatory effect of artemisinin derivative dihydroartemisinin(DHA)on anti-tumor immune function of CD8+T cells induced by non-small cell lung cancer(NSCLC)cells.Methods NSCLC A549 cells were divided into DMSO control group and DHA treatment group.A549 cells were treated with DMSO and DHA at different concentrations(25,50 and 100 μmol/L),and the optimal concentration of DHA was selected to treat A549 cells for 0,24,48 and 72 h according to half maximal inhibitory concentrate(IC50).CCK-8 method and colony formation test were used to detect the effect of DHA on the proliferation and colony formation ability of A549 cells.Peripheral blood mononuclear cells(PBMCs)of healthy individuals were isolated by density gradient centrifugation.After monocytes were removed by adhesion method,A549 cells pretreated with mitomycin C were co-cultured with PBMCs at 10:1 ratio.After 2 weeks,flow cytometry was used to detect the proportion of CD8+T cells and the expression levels of perforin and granzyme B.Results Compared with the control group,the proliferation inhibition rates of A549 cells increased after treatment with 25,50 and 100 μmol/L DHA for 24 h(P<0.01).The IC50 of DHA on A549 cells was46.26 μmol/L.According to IC50 concentration analysis,the inhibi-tion rates of A549 cells treated with 50 μmol/L DHA for 0,24,48 and 72h were 1.53%,53.50%,63.84%and 69.91%,and the cells inhibition rates of A548 cells increased compared with the previous observation time point,namely 0,24 and 48 h(P<0.01).The colony formation assay showed that the colony formation number of A549 cells in DHA treated group decreased compared with the control group(P<0.01).Flow cytometry results showed that compared with the control group,the proportion of CD8+T cells induced by A549 cells in the co-culture system and the proportion of CD8+T cells expressing perforin and granzyme B were higher in DHA pretreatment group(P<0.01).Conclusion DHA inhibits the growth of NSCLC cells and promotes anti-tumor immune response of CD8+T cells induced by NSCLC cells.

Objective:To investigate the expression level of miR-21 in patients with septic acute respiratory distress syndrome, and analyze its correlation with inflammatory factors and its value in evaluating clinical prognosis.Methods:Patients with sepsis admitted to the intensive care unit (ICU) of the First Affiliated Hospital of Hebei North University from October 2020 to March 2022 were prospectively recruited. The patients were divided into an ARDS group and a non-ARDS group according to whether ARDS occurred within 3 days after admission. The ARDS group was divided into a low-risk group and a high-risk group according to the oxygenation index, and the ARDS group was divided into a survival group and a death group according to their 28-day survival status. In addition, 50 healthy volunteers who underwent physical examination during the same period were included in the control group. The expression levels of serum miR-21 and inflammatory factors [tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6)] were compared in each group at admission. To analyze the relationship between miR-21 expression and inflammatory factors and explore the value of miR-21 in predicting the prognosis of sepsis patients with ARDS.Results:A total of 106 patients with sepsis were included. Compared with the healthy control group, the levels of serum miR-21, TNF-α and IL-6 in the ARDS group and non-ARDS group were significantly increased (all P<0.05). Compared with the low-risk group, the levels of serum miR-21, TNF-α and IL-6 in the high-risk group were significantly increased (all P<0.05). Compared with the survival group, the serum miR-21 expression level and TNF-α and IL-6 levels in the death group were significantly increased (all P<0.05). Pearson correlation analysis showed that the serum miR-21 expression level in the ARDS group was positively correlated with IL-6 and TNF-α levels ( r=0.842, 0.697, P<0.001). ROC curve analysis showed that the AUC of serum miR-21 in predicting death from sepsis complicated with ARDS was 0.876 (95% CI: 0.761-0.942), the best cut-off value was 2.25, and its sensitivity and specificity were 92.9% and 71.7%, respectively. Conclusions:The expression level of serum miR-21 is significantly increased in patients with sepsis ARDS, is positively correlated with the level of inflammatory factors, is closely correlated with the severity and prognosis of the disease, and has great value in evaluating the prognosis of patients with sepsis ARDS.

OBJECTIVE: To explore the genetic basis for fetus with bilateral lateral ventriculomegaly. METHODS: Fetus umbilical cord blood and peripheral blood samples of its parents were collected. The fetus was subjected to chromosomal karyotyping, whilst the fetus and its parents were subjected to array comparative genomic hybridization (aCGH). The candidate copy number variation (CNV) were verified by qPCR, Application goldeneye DNA identification system was used to confirm the parental relationship. RESULTS: The fetus was found to have a normal karyotype. aCGH analysis indicated that it has carried a 1.16 Mb deletion at 17p13.3, which partially overlapped with the critical region of Miller-Dieker syndrome (MDS), in addition with a 1.33 Mb deletion at 17p12 region, which is associated with hereditary stress-susceptible peripheral neuropathy (HNPP). Its mother was also found to harbor the 1.33 Mb deletion at 17p12. qPCR analysis confirmed that the expression levels of genes from the 17p13.3 and 17p12 regions were about the half of that in the normal control, as well as the maternal peripheral blood sample. Parental relationship was confirmed between the fetus and its parents. Following genetic counseling, the parents has chosen to continue with the pregnancy. CONCLUSION The fetus was diagnosed with Miller-Dieker syndrome due to the de novo deletion at 17p13.3. Ventriculomegaly may be an important indicator for prenatal ultrasonography in fetuses with MDS.
Pregnancy ; Female ; Humans ; Classical Lissencephalies and Subcortical Band Heterotopias ; Comparative Genomic Hybridization ; DNA Copy Number Variations ; Fetus ; Hydrocephalus ; Prenatal Diagnosis ; Chromosome Deletion

OBJECTIVE: To explore the genetic etiology of two patients with developmental delay and intellectual disability. METHODS: Two children who were respectively admitted to Henan Provincial People's Hospital on August 29, 2021 and August 5, 2019 were selected as the study subjects. Clinical data were collected, and array comparative genomic hybridization (aCGH) was carried out on the children and their parents for the detection of chromosomal microduplication/microdeletions. RESULTS: Patient 1 was a 2-year-and-10-month female and patient 2 was a 3-year-old female. Both children had featured developmental delay, intellectual disability, and abnormal findings on cranial MRI. aCGH revealed that patient 1 has harbored arr[hg19] 6q14.2q15(84621837_90815662)×1, a 6.19 Mb deletion at 6q14.2q15, which encompassed ZNF292, the pathogenic gene for Autosomal dominant intellectual developmental disorder 64. Patient 2 has harbored arr[hg19] 22q13.31q13.33(46294326_51178264)×1, a 4.88 Mb deletion at 22q13.31q13.33 encompassing the SHANK3 gene, haploinsufficiency of which can lead to Phelan-McDermid syndrome. Both deletions were classified as pathogenic CNVs based on the guidelines of American College of Medical Genetics and Genomics (ACMG) and were not found in their parents. CONCLUSION The 6q14.2q15 deletion and 22q13-31q13.33 deletion probably underlay the developmental delay and intellectual disability in the two children, respectively. Haploinsufficiency of the ZNF292 gene may account for the key clinical features of the 6q14.2q15 deletion.
Humans ; Child ; Female ; Child, Preschool ; Intellectual Disability/genetics* ; Comparative Genomic Hybridization ; Chromosome Disorders/genetics* ; Chromosome Deletion ; Magnetic Resonance Imaging ; Chromosomes, Human, Pair 22 ; Developmental Disabilities/genetics* ; Carrier Proteins/genetics* ; Nerve Tissue Proteins/genetics*

Objective:To investigate the relationship between dosimetric parameters and tumor volume change after 125I implantation for thyroid cancer and obtain better dosimetric parameters that predict the curative effect more accurately. Methods:A total of 22 consecutive patients with thyroid cancer (23 targets) who received 125I interstitial brachytherapy in Department of Oncology, Hebei General Hospital were retrospectively analyzed. All the patients received post-operative dose verification, and the D 90 (Minimum dose received by 90% target volume) was calculated. After a regular follow-up, the tumor volume reduction ratio after t months (R t) , actual absorbed dose (D 1m) , efficacy corrected absorbed dose (D 1e) , and sensitivity corrected absorbed dose (D 1s) of the first month were calculated according to the actual follow-up CT images. The statistical test was carried out by SPSS21.0. The Spearman linear analysis was applied to analyze the relationship between D 90, D 1m, D 1e, D 1s and R t, and the curve fitting was also completed. Results:The post-operative D 90, D 1m, D 1e, D 1s and R t were (129.73±14.22) Gy, (36.95±7.35) Gy, (43.45±11.32) Gy, (41.78±13.39) Gy, and (32.00±19.00) %, respectively. And the correlation coefficient were 0.692, 0.551, 0.728, and 0.858, respectively, which showed significant positive relevance between dosimetric parameters and tumor volume change ( P<0.01) , the curve fitting presented cubic function. Conclusion:The post-operative D 90, D 1m, D 1e, and D 1s can be predictors for curative effect, and D 1s is the best predictor.

DECIDE-Diet trial was taken as a case to introduce the methods of blinding and blinding assessment for feeding trials, report the details of blinding, conduct a blinding survey and calculate Jame's BI and Bang's BI. Jame's BI was 0.683 (95% CI: 0.593~0.772). The Bang's BI for the intervention group was 0.340 (95% CI: 0.199~0.481), and for the control group was 0.086 (95% CI: -0.060~0.231). The blinding of the DECIDE)-Diet was generally successful, but the intervention group may infer their group to a certain extent. Feeding trials should report the details of blinding and consider blinding assessment.