BackgroundThe functional changes of the default mode network （DMN） are closely related to the onset of major depressive disorders. However， the relationship between the DMN subsystem （core subsystem， dorsomedial prefrontal cortex subsystem， medial temporal lobe subsystem） and symptoms of first-episode major depressive disorder remains unclear. ObjectiveTo investigate abnormal functional connectivity between DMN subsystems and the whole brain in first-episode major depressive disorder patients during the resting-state， and to analyse the correlations between these functional connectivity patterns and clinical symptoms， so as to reveal the potential neural mechanisms from the perspective of DMN subsystem. MethodsFrom September 2020 to September 2023， a total of 64 first-episode outpatients and inpatients meeting the diagnostic criteria for major depressive disorder in the Diagnostic and Statistical Manual of Mental Disorders， fourth edition （DSM-IV） were enrolled at the Inner Mongolia Autonomous Region Mental Health Center as the study group. During the same period， 54 healthy volunteers matched for age， gender， and years of education were recruited from the community as the control group. Both groups were assessed using the Hamilton Depression Scale-24 item （HAMD-24）. Resting-state functional magnetic resonance images （rs-fMRI） of the two groups were acquired using a Siemens 3.0 T scanner， and differences in functional connectivity between DMN subsystems （core subsystem， dorsomedial prefrontal cortex subsystem， medial temporal lobe subsystem） and the whole brain were compared. The functional connectivity values of brain regions with statistically significant differences between the two groups were extracted. Spearman's rank correlation coefficient analysis was used to investigate the correlation between these functional connectivity values and HAMD-24 scores of the study group. ResultsUltimately， 46 patients and 43 controls completed the study. Compared with the control group， the study group exhibited significantly stronger functional connectivity in the following pathways： between the right superior parietal lobule （core subsystem） and right cerebellar lobule VIII （t=3.954， P<0.05， GRF-corrected）， between the right lateral temporal cortex （dorsomedial prefrontal cortex subsystem） and right cerebellar lobule VIII， right and left hippocampi， right medial， and paracingulate gyrus （t=4.595， 4.208， 5.200， 4.038， P<0.05， GRF-corrected）， and between the temporoparietal junction （dorsomedial prefrontal cortex subsystem） and left lingual gyrus and right cerebellar lobule VIII （t=3.557， 4.274， P<0.05， GRF-corrected）. Conversely， weaker functional connectivity was observed between the right inferior frontal gyrus and left gyrus rectus （t=-3.824， P<0.05， GRF-corrected）. Furthermore， within the study group， the functional connectivity values between the right lateral temporal cortex and right hippocampus， as well as between the temporoparietal junction and right cerebellar lobule VIII， were both negatively correlated with the HAMD-24 cognitive impairment factor score （r=-0.306， -0.318， P<0.05）. ConclusionIncreased functional connectivity between the DMN （specifically its core and dorsomedial prefrontal cortex subsystems） and cerebellum， partial limbic system， and lingual gyrus may be associated with the neuropathology of first-episode major depressive disorder. Furthermore， alterations in functional connectivity between the dorsomedial prefrontal cortex subsystem and both the cerebellum and hippocampus in these patients may be related to cognitive function. ［Funded by 2019 Annual Inner Mongolia Autonomous Region Natural Science Foundation Project （number， 2019MS03038）； 2023 Annual Inner Mongolia Autonomous Region Natural Science Foundation Project （number， 2023MS08028）］

Objective To explore the function of olfactomedin domain family protein 3(OLFM3)in neuroblastoma(NB).Methods The relationship between the expression of OLFM3 mRNA and v-myc avian myelocytomatosis viral oncogene neuroblastoma derived homolog(MYCN)amplification status and the prognosis of patients in NB clin-ical samples were clarified by using R2 Genomics Analysis and Visualization Platform.Depmap database was used to examine the expression level of OLFM3 in different tumors cell lines and to identify the correlation between OLFM3 expression and MYCN amplification status in various NB cell lines.RT-qPCR and Western blot were used to detect the knockdown level of OLFM3.Cell proliferation was monitored using crystal violet staining and real?time cellular analysis.The colony formation ability of NB cells was assessed using colony?forming unit assay.Results Analysis of R2 database revealed higher level of OLFM3 expression in MYCN?amplified NB clinical samples(P<0.001).Patients with high OLFM3 expression showed a significantly lower overall survival probability compared to those with low OLFM3 expression(P<0.05).Analysis with Depmap database revealed that the expres?sion level of OLFM3 was higher in NB than that in other kind of tumor.The expression level of OLFM3 was signifi?cantly higher in the MYCN?amplified cell lines than in the MYCN?non?amplified cell lines(P<0.01).In MYCN?am?plified NB cells,knockdown of OLFM3 inhibited cells proliferation(P<0.001)and colony formation(P<0.001),but there was no noticeable changes observed in MYCN?non?amplified cells.Conclusions OLFM3 specifically pro?motes the proliferation of MYCN?amplified NB cells,but has a less effect on MYCN?non?amplified cells,indicating it is a potential biomarker for high?risk MYCN?amplified NB.

Objective To investigate the effect of the rs3765467 polymorphism of glucagon-like peptide-1 receptor(GLP-1R)gene on the efficacy of Liraglutide(Lir)in patients with type 2 diabetes mellitus(T2DM)and metabolic associated fatty liver disease(MAFLD).Methods A total of 281 patients with T2DM from May 2022 to May 2023 were selected,including 125 patients with simple T2DM(T2DM group)and 156 patients with T2DM combined with MAFLD(T2DM+MAFLD group).120 healthy individuals during the same period were selected as the control(NC)group.The related indexes of glucose and lipid metabolism were detected.The polymorphism of GLP-1R gene rs3765467 was detected.Results BMI,FPG,HbA1c,HOMA-IR and TG in each group increased in turn(P<0.05),while the distribution frequency of genotype GG and allele G decreased in turn(P<0.05).TC and LDL-C in T2DM and T2DM+MAFLD groups were higher than those in NC group(P<0.05).TC and TG levels in genotype GA/AA patients were significantly higher than those in genotype GG patients(P<0.05).Compared with before treatment,the levels of BMI,FPG,HbA1c,HOMA-IR,TC,TG and LDL-C in T2DM patients with MAFLD were significantly decreased after Lir treatment(P<0.05).There was no significant difference in BMI and related indexes of glucose and lipid metabolism in GG and GA/AA patients before and after Lir treatment(P>0.05).Conclusions The distribution frequency of GG and G allele at rs3765467 of GLP-1R gene is reduced in T2DM patients with MAFLD.The carrying of allele A was associated with increased TC and TG levels,but did not affect the efficacy of Lir in reducing weight and improving glycolipid metabolism.

Objective To elucidate the functional role and underlying mechanisms of the ribosome biogenesis factor BMS1 in neuroblastoma(NB)cellular proliferation.Methods We utilized the R2 genomics analysis and visualization platform to analyze the correlation between BMS1 expression levels and clinical characteristics of NB children.The BMS1 mRNA level in three human neuroblastoma cells SK-N-BE(2),BE(2)-C,IMR-32 and two normal cells hTERT RPE-1,IMR-90 was detected by real-time quantitative polymerase chain reaction(RT-qPCR).Two distinct small interfering RNA(siRNA)sequences were used to target BMS1 mRNA in NB cells SK-N-BE(2)and BE(2)-C,with normal cells hTERT RPE-1 serving as controls.We used RT-qPCR to quantify the mRNA levels of BMS1 and two key neuroblastoma-associated molecules(MYCN and p53).After transfection with siRNA,cellular proliferation was detected by various experimental approaches:crystal violet staining,real-time cell analysis(RTCA),colony-forming unit assay and immunofluorescence.Results By analyzing two independent neuroblastoma clinical cohorts(GSE85047/NRC-283 and Westermann-144 datasets),it was found that the BMS1 mRNA level in MYCN-amplified NB was significantly higher than that in MYCN-non-amplified NB(P<0.05).Furthermore,the overall survival rate of NB children in the BMS1 high-expression group was decreased(P<0.05).Consistent with these clinical observations,the BMS1 mRNA level in NB cells SK-N-BE(2),BE(2)-C and IMR-32 was significantly higher than that in normal cells hTERT RPE-1,IMR-90(P<0.05).The targeted transient knockdown of BMS1 in NB cell lines SK-N-BE(2)and BE(2)-C resulted in decreased intracellular MYCN mRNA expression levels(P<0.05),significantly reduced cell proliferation capacity and colony-forming ability(P<0.05).Immunofluorescence revealed that the expression of Ki-67,a proliferation marker,was decreased(P<0.05).At the molecular level,RT-qPCR showed that the p53 mRNA level was significantly elevated in the BMS1-knockdown groups(si BMS1-1#and si BMS1-2#)compared with the control group(P<0.05).However,transient knockdown of BMS1 had no significant impact on the proliferative capacity of normal cells hTERT RPE-1.Conclusion BMS1 expression was up-regulated in MYCN-amplified NB and negatively correlated with the prognosis of the NB children.Mechanistically,interfering with BMS1 expression may transcriptionally activate p53 in NB cells,thereby inhibiting their proliferative ability,while having minimal impact on normal cells growth kinetics.These findings suggest that BMS1 serves as an important proliferation driver in NB and is expected to be a promising therapeutic target for NB children,particularly MYCN-amplified pediatric patients.

Objective To explore the preventive effect of auricular point bean embedding on sufentanil-induced cough reflex during induction of general anesthesia undergoing breast mass resection.Methods Clinical data of patients undergoing elective mammary mass resection with general anesthesia from June 2021 to May 2023 were retrospectively collected.The patients who received auricular point bean embedding therapy before surgery were included in the observation group,and patients who did not receive auricular point bean embedding therapy before surgery were included in the control group.The propensity score matching(PSM)method was used to perform 1∶1 matching based on basic data.The time effect,intergroup effect and interaction effect of vital signs parameters were analyzed by repeated measures analysis of variance.The GEE was used to analyze visual analogue scale(VAS)at different time points after operation.The Log-binomial regression model was used to analyze the incidence of postoperative adverse reactions and the association between subtypes.Results After PSM,50 patients were included in the observation and control groups.The time effect,intergroup effect and interaction effect of systolic blood pressure(SBP),diastolic blood pressure(DBP),mean arterial pressure(MAP),heart rate(HR)and blood oxygen saturation(SpO2)in 2 groups were statistically significant(P＜0.05).Within the same group,SBP,DBP,MAP,HR and SpO2 were statistically significant at immediately after intravenous sufentanil injection(T1),2 min after injection(T2),1 min before intubation(T3)and 1 min after intubation(T4)(P＜0.05).At T2,SBP,DBP,MAP and HR in the observation group were significantly lower than those in the control group,and SpO2 was significantly higher than that in the control group(P＜0.05).The cough control,VAS score and total incidence of postoperative adverse reactions in the observation group were significantly better than those in the control group(P＜0.05).The result of GEE model analysis showed that the improvement of postoperative VAS scores of patients in the observation group was better than that in the control group(P＜0.05).Conclusion Preoperative auricular point bean embedding has a specific preventive effect on sufentanil induced cough reaction in patients with breast mass resection under general anesthesia.

Objective To investigate the characteristics of intestinal microbiota and its relationship with insulin resistance(IR)in patients with type 2 diabetes mellitus(T2DM)and obesity.Methods A total of 80 patients with newly diagnosed T2DM were enrolled in this study from The Second Department of Endocrinology,Qinghai Provincial People's Hospital and divided into simple T2DM group(T2DM,n=40)and T2DM combined with obesity group(Obe,n=40)according to the combination of obesity.The differences of diet structure,biochemical indexes and intestinal flora were compared between the two groups,and the relationship between intestinal flora and BMI,IR was analyzed.Results Compared with the T2DM group,BMI,WC,TG,HOMA-IR,and intake of refined grains,poultry and eggs,and cooking oil were significantly higher(P<0.05),while in take of vegetables and fruits was significantly lower in the Obe group(P<0.05).Microbiota analysis showed that there were 647 OTUs in both groups,90 specific to the T2DM group and 114 specific to the Obe group.The difference of intestinal flora was greater between the two groups than that within the group(P<0.05),and the differences within and between the groups were the least at the phylum level(P<0.05).The dominant flora were Bacteroides and Firmicutes.There were significant differences in the relative abundance of flora in 2 phyla,3 classes,5 orders,8 families,17 genera,and 15 species between the two groups(P<0.05).Bacteroides,Clostridium laprosii and Butylum were positively correlated with BMI(P<0.05),Bifidobacterium,Dialisteria,Streptococcus,Rosesia,Escherichia and Leptotrichia were negatively correlated with BMI(P<0.05).Fusobacterium was positively correlated with HOMA-IR(P<0.05).Conclusions Compared with patients with T2DM alone,patients with T2DM and obesity have a decreased proportion of beneficial bacteria and an increased proportion of pathogenic bacteria in the intestinal flora,which may further aggravate IR and affect the progression of T2DM.

Objective To analyze the factors influencing iodine nutritional status in pregnant women dur-ing pregnancy,based on thyroid function and thyroid autoantibody levels,and to explore the association between iodine nutritional abnormalities and pregnancy outcomes.Methods A total of 838 pregnant women who underwent routine prenatal checkups at Qinghai Provincial People's Hospital between January 2021 and June 2023 were pro-spectively enrolled in this study.All participants were followed until delivery.Seven cases were lost to follow-up,resulting in a final sample size of 831 participants.Among them,276 were in the first trimester,384 in the second trimester,and 171 in the third trimester.Data on urinary iodine concentration(UIC),urinary creatinine(UCr),thyroid function indicators,and thyroid autoantibodies were collected.Based on their iodine nutritional status,the participants were categorized into either the iodine-sufficient group or the iodine-abnormal group(including iodine-deficient,iodine-hyper-sufficient,and iodine-excessive subgroups).This study analyzed the iodine nutritional sta-tus of pregnant women during different gestational periods,compared thyroid function indices,prevalence of thy-roid diseases,and the positivity rates of thyroid peroxidase antibody(TPOAb),thyroglobulin antibody(TGAb),and thyroid-stimulating hormone receptor antibody(TRAb)among different iodine status groups.Additionally,ad-verse pregnancy outcomes were compared across groups.Multivariate logistic regression analysis was conducted to identify risk factors associated with iodine abnormalities during pregnancy,and a predictive model was developed to assess its potential predictive value.Results Among the 831 pregnant women included in the study,373 cases(44.89％)exhibited iodine sufficiency,while 458 cases(55.11％)presented with iodine abnormalities,including 282 cases of iodine deficiency,144 cases of iodine hypersufficiency,and 32 cases of iodine excess.No statistically significant differences were observed in the iodine nutritional status across different trimesters(P>0.05).The se-rum level of thyroid-stimulating hormone(TSH)was significantly higher in the iodine abnormal group compared to the iodine sufficient group(P<0.05).Additionally,the iodine abnormal group demonstrated higher positivity rates of TPOAb alone,TGAb,and TRAb,as well as increased incidence of thyroid dysfunction and total adverse pregnancy outcomes compared to the iodine sufficient group(all P<0.05).These adverse indicators were also sig-nificantly elevated in the iodine-deficient,iodine super-sufficient,and iodine overdose subgroups compared to the iodine sufficient group(P<0.05).Elevated serum TSH levels and the presence of TPOAb,TGAb,and TRAb were identified as risk factors for iodine abnormalities during pregnancy(P<0.05).The predictive model con-structed for identifying iodine abnormalities in pregnant women demonstrated an area under the curve(AUC)of 0.876,with a sensitivity of 72.27％and a specificity of 89.01％.Conclusions The prevalence of iodine nutritional abnormalities among pregnant women during pregnancy was high,with most cases presenting iodine deficiency.These abnormalities were associated with thyroid function,thyroid autoimmunity,and pregnancy outcomes,but showed no significant correlation with gestational age.Furthermore,the prediction model developed based on iden-tified risk factors demonstrated effective performance in predicting iodine nutritional abnormalities during preg-nancy.

Objective To elucidate the functional role and underlying mechanisms of the ribosome biogenesis factor BMS1 in neuroblastoma(NB)cellular proliferation.Methods We utilized the R2 genomics analysis and visualization platform to analyze the correlation between BMS1 expression levels and clinical characteristics of NB children.The BMS1 mRNA level in three human neuroblastoma cells SK-N-BE(2),BE(2)-C,IMR-32 and two normal cells hTERT RPE-1,IMR-90 was detected by real-time quantitative polymerase chain reaction(RT-qPCR).Two distinct small interfering RNA(siRNA)sequences were used to target BMS1 mRNA in NB cells SK-N-BE(2)and BE(2)-C,with normal cells hTERT RPE-1 serving as controls.We used RT-qPCR to quantify the mRNA levels of BMS1 and two key neuroblastoma-associated molecules(MYCN and p53).After transfection with siRNA,cellular proliferation was detected by various experimental approaches:crystal violet staining,real-time cell analysis(RTCA),colony-forming unit assay and immunofluorescence.Results By analyzing two independent neuroblastoma clinical cohorts(GSE85047/NRC-283 and Westermann-144 datasets),it was found that the BMS1 mRNA level in MYCN-amplified NB was significantly higher than that in MYCN-non-amplified NB(P<0.05).Furthermore,the overall survival rate of NB children in the BMS1 high-expression group was decreased(P<0.05).Consistent with these clinical observations,the BMS1 mRNA level in NB cells SK-N-BE(2),BE(2)-C and IMR-32 was significantly higher than that in normal cells hTERT RPE-1,IMR-90(P<0.05).The targeted transient knockdown of BMS1 in NB cell lines SK-N-BE(2)and BE(2)-C resulted in decreased intracellular MYCN mRNA expression levels(P<0.05),significantly reduced cell proliferation capacity and colony-forming ability(P<0.05).Immunofluorescence revealed that the expression of Ki-67,a proliferation marker,was decreased(P<0.05).At the molecular level,RT-qPCR showed that the p53 mRNA level was significantly elevated in the BMS1-knockdown groups(si BMS1-1#and si BMS1-2#)compared with the control group(P<0.05).However,transient knockdown of BMS1 had no significant impact on the proliferative capacity of normal cells hTERT RPE-1.Conclusion BMS1 expression was up-regulated in MYCN-amplified NB and negatively correlated with the prognosis of the NB children.Mechanistically,interfering with BMS1 expression may transcriptionally activate p53 in NB cells,thereby inhibiting their proliferative ability,while having minimal impact on normal cells growth kinetics.These findings suggest that BMS1 serves as an important proliferation driver in NB and is expected to be a promising therapeutic target for NB children,particularly MYCN-amplified pediatric patients.

Objective To explore the preventive effect of auricular point bean embedding on sufentanil-induced cough reflex during induction of general anesthesia undergoing breast mass resection.Methods Clinical data of patients undergoing elective mammary mass resection with general anesthesia from June 2021 to May 2023 were retrospectively collected.The patients who received auricular point bean embedding therapy before surgery were included in the observation group,and patients who did not receive auricular point bean embedding therapy before surgery were included in the control group.The propensity score matching(PSM)method was used to perform 1∶1 matching based on basic data.The time effect,intergroup effect and interaction effect of vital signs parameters were analyzed by repeated measures analysis of variance.The GEE was used to analyze visual analogue scale(VAS)at different time points after operation.The Log-binomial regression model was used to analyze the incidence of postoperative adverse reactions and the association between subtypes.Results After PSM,50 patients were included in the observation and control groups.The time effect,intergroup effect and interaction effect of systolic blood pressure(SBP),diastolic blood pressure(DBP),mean arterial pressure(MAP),heart rate(HR)and blood oxygen saturation(SpO2)in 2 groups were statistically significant(P＜0.05).Within the same group,SBP,DBP,MAP,HR and SpO2 were statistically significant at immediately after intravenous sufentanil injection(T1),2 min after injection(T2),1 min before intubation(T3)and 1 min after intubation(T4)(P＜0.05).At T2,SBP,DBP,MAP and HR in the observation group were significantly lower than those in the control group,and SpO2 was significantly higher than that in the control group(P＜0.05).The cough control,VAS score and total incidence of postoperative adverse reactions in the observation group were significantly better than those in the control group(P＜0.05).The result of GEE model analysis showed that the improvement of postoperative VAS scores of patients in the observation group was better than that in the control group(P＜0.05).Conclusion Preoperative auricular point bean embedding has a specific preventive effect on sufentanil induced cough reaction in patients with breast mass resection under general anesthesia.

Objective To analyze the factors influencing iodine nutritional status in pregnant women dur-ing pregnancy,based on thyroid function and thyroid autoantibody levels,and to explore the association between iodine nutritional abnormalities and pregnancy outcomes.Methods A total of 838 pregnant women who underwent routine prenatal checkups at Qinghai Provincial People's Hospital between January 2021 and June 2023 were pro-spectively enrolled in this study.All participants were followed until delivery.Seven cases were lost to follow-up,resulting in a final sample size of 831 participants.Among them,276 were in the first trimester,384 in the second trimester,and 171 in the third trimester.Data on urinary iodine concentration(UIC),urinary creatinine(UCr),thyroid function indicators,and thyroid autoantibodies were collected.Based on their iodine nutritional status,the participants were categorized into either the iodine-sufficient group or the iodine-abnormal group(including iodine-deficient,iodine-hyper-sufficient,and iodine-excessive subgroups).This study analyzed the iodine nutritional sta-tus of pregnant women during different gestational periods,compared thyroid function indices,prevalence of thy-roid diseases,and the positivity rates of thyroid peroxidase antibody(TPOAb),thyroglobulin antibody(TGAb),and thyroid-stimulating hormone receptor antibody(TRAb)among different iodine status groups.Additionally,ad-verse pregnancy outcomes were compared across groups.Multivariate logistic regression analysis was conducted to identify risk factors associated with iodine abnormalities during pregnancy,and a predictive model was developed to assess its potential predictive value.Results Among the 831 pregnant women included in the study,373 cases(44.89％)exhibited iodine sufficiency,while 458 cases(55.11％)presented with iodine abnormalities,including 282 cases of iodine deficiency,144 cases of iodine hypersufficiency,and 32 cases of iodine excess.No statistically significant differences were observed in the iodine nutritional status across different trimesters(P>0.05).The se-rum level of thyroid-stimulating hormone(TSH)was significantly higher in the iodine abnormal group compared to the iodine sufficient group(P<0.05).Additionally,the iodine abnormal group demonstrated higher positivity rates of TPOAb alone,TGAb,and TRAb,as well as increased incidence of thyroid dysfunction and total adverse pregnancy outcomes compared to the iodine sufficient group(all P<0.05).These adverse indicators were also sig-nificantly elevated in the iodine-deficient,iodine super-sufficient,and iodine overdose subgroups compared to the iodine sufficient group(P<0.05).Elevated serum TSH levels and the presence of TPOAb,TGAb,and TRAb were identified as risk factors for iodine abnormalities during pregnancy(P<0.05).The predictive model con-structed for identifying iodine abnormalities in pregnant women demonstrated an area under the curve(AUC)of 0.876,with a sensitivity of 72.27％and a specificity of 89.01％.Conclusions The prevalence of iodine nutritional abnormalities among pregnant women during pregnancy was high,with most cases presenting iodine deficiency.These abnormalities were associated with thyroid function,thyroid autoimmunity,and pregnancy outcomes,but showed no significant correlation with gestational age.Furthermore,the prediction model developed based on iden-tified risk factors demonstrated effective performance in predicting iodine nutritional abnormalities during preg-nancy.