Objective:To investigate the functional characteristics of the prefrontal cortex in patients with schizophrenia (SCZ) during resting state and analyze its association with clinical symptoms.Methods:Twenty-eight hospitalized patients with SCZ (SCZ group) were selected from November 2023 to May 2024, and 28 healthy controls (HC group) were recruited concurrently. By using functional near-infrared spectroscopy (fNIRS) technology, data on the concentration changes of oxygenated hemoglobin (HbO) and deoxygenated hemoglobin (HbR) in the prefrontal cortex during resting state were collected from all subjects to measure cortical hemodynamic activity. Regional activation values and functional connectivity (FC) values among brain areas were analyzed. Clinical symptoms in patients were assessed using the positive and negative syndrome scale (PANSS).SPSS 25.0 software was employed for statistical analysis. Between-group comparisons were performed using independent samples t-tests or Mann-Whitney U tests. Spearman correlation analysis and general linear regression models were applied to examine relationships between prefrontal cortical functional characteristics and clinical symptoms. Results:The levels of HbO in the right inferior frontal gyrus and left frontal pole area were significantly higher in the SCZ group (1.5 (1.0, 3.0)μmol/L, 1.0 (1.0, 2.8)μmol/L) than those in the HC group (-0.01 (-0.05, 0.02)μmol/L, -0.02 (-0.07, 0.03)μmol/L) ( Z=-6.46, -6.50, both P<0.01). The levels of HbR in the bilateral dorsolateral prefrontal cortex were significantly higher in the SCZ group (0.02 (-0.01, 0.07)μmol/L, 0.01 (-0.01, 0.03)μmol/L) than those in the HC group (-0.01 (-0.03, 0.01)μmol/L, -0.01 (-0.02, 0.01)μmol/L) ( Z=-2.46, -1.98, both P<0.05).The SCZ group showed significantly higher HbO-based FC values in the frontal pole-temporal pole (0.49±0.21) and temporal pole-dorsolateral prefrontal cortex (0.36±0.25) compared to the HC group (0.33±0.18, 0.15±0.19) ( t=3.02, 3.44, both P<0.01). Conversely, the SCZ group exhibited significantly lower HbR-based FC in the frontal pole-inferior frontal gyrus (0.15±0.13) and inferior frontal gyrus-temporal pole (0.27±0.37) compared to the HC group (0.33±0.26, 0.77±0.48) ( t=-3.17, -4.23, both P<0.01). Correlation analysis revealed that in the SCZ group, the level of HbO in the right inferior frontal gyrus was positively correlated with negative symptoms, positive symptoms, excitement/hostility, and PANSS total score ( r=0.45-0.64, all P<0.05), and the level of HbO in the left frontal pole area was positively correlated with excitement/hostility and PANSS total score ( r=0.57, 0.50, both P<0.01), while the FC value between the frontal pole and temporal pole areas showed a negative correlation with excitement/hostility ( r=-0.39, P<0.05). Regression analysis demonstrated that, the HbO concentration in the right inferior frontal gyrus significantly positively predicted PANSS total score, positive symptoms, and negative symptoms ( β=0.70, 0.64, 0.55, all P<0.01).The HbO concentration in the left frontal pole area significantly positively predicted excitement/hostility ( β=0.77, P<0.01).The frontal pole-temporal pole HbO-based FC significantly negatively predicted excitement/hostility scores ( β=-0.42, P<0.01). Conclusion:Patients with SCZ exhibit hyperactivation of localized prefrontal cortex brain regions and dysfunction of functional connectivity during resting state, which are significantly associated with core clinical symptoms including positive, negative, and excitement/hostility symptoms.

Objective:To investigate the functional characteristics of the prefrontal cortex in patients with schizophrenia (SCZ) during resting state and analyze its association with clinical symptoms.Methods:Twenty-eight hospitalized patients with SCZ (SCZ group) were selected from November 2023 to May 2024, and 28 healthy controls (HC group) were recruited concurrently. By using functional near-infrared spectroscopy (fNIRS) technology, data on the concentration changes of oxygenated hemoglobin (HbO) and deoxygenated hemoglobin (HbR) in the prefrontal cortex during resting state were collected from all subjects to measure cortical hemodynamic activity. Regional activation values and functional connectivity (FC) values among brain areas were analyzed. Clinical symptoms in patients were assessed using the positive and negative syndrome scale (PANSS).SPSS 25.0 software was employed for statistical analysis. Between-group comparisons were performed using independent samples t-tests or Mann-Whitney U tests. Spearman correlation analysis and general linear regression models were applied to examine relationships between prefrontal cortical functional characteristics and clinical symptoms. Results:The levels of HbO in the right inferior frontal gyrus and left frontal pole area were significantly higher in the SCZ group (1.5 (1.0, 3.0)μmol/L, 1.0 (1.0, 2.8)μmol/L) than those in the HC group (-0.01 (-0.05, 0.02)μmol/L, -0.02 (-0.07, 0.03)μmol/L) ( Z=-6.46, -6.50, both P<0.01). The levels of HbR in the bilateral dorsolateral prefrontal cortex were significantly higher in the SCZ group (0.02 (-0.01, 0.07)μmol/L, 0.01 (-0.01, 0.03)μmol/L) than those in the HC group (-0.01 (-0.03, 0.01)μmol/L, -0.01 (-0.02, 0.01)μmol/L) ( Z=-2.46, -1.98, both P<0.05).The SCZ group showed significantly higher HbO-based FC values in the frontal pole-temporal pole (0.49±0.21) and temporal pole-dorsolateral prefrontal cortex (0.36±0.25) compared to the HC group (0.33±0.18, 0.15±0.19) ( t=3.02, 3.44, both P<0.01). Conversely, the SCZ group exhibited significantly lower HbR-based FC in the frontal pole-inferior frontal gyrus (0.15±0.13) and inferior frontal gyrus-temporal pole (0.27±0.37) compared to the HC group (0.33±0.26, 0.77±0.48) ( t=-3.17, -4.23, both P<0.01). Correlation analysis revealed that in the SCZ group, the level of HbO in the right inferior frontal gyrus was positively correlated with negative symptoms, positive symptoms, excitement/hostility, and PANSS total score ( r=0.45-0.64, all P<0.05), and the level of HbO in the left frontal pole area was positively correlated with excitement/hostility and PANSS total score ( r=0.57, 0.50, both P<0.01), while the FC value between the frontal pole and temporal pole areas showed a negative correlation with excitement/hostility ( r=-0.39, P<0.05). Regression analysis demonstrated that, the HbO concentration in the right inferior frontal gyrus significantly positively predicted PANSS total score, positive symptoms, and negative symptoms ( β=0.70, 0.64, 0.55, all P<0.01).The HbO concentration in the left frontal pole area significantly positively predicted excitement/hostility ( β=0.77, P<0.01).The frontal pole-temporal pole HbO-based FC significantly negatively predicted excitement/hostility scores ( β=-0.42, P<0.01). Conclusion:Patients with SCZ exhibit hyperactivation of localized prefrontal cortex brain regions and dysfunction of functional connectivity during resting state, which are significantly associated with core clinical symptoms including positive, negative, and excitement/hostility symptoms.

Objective To evaluate the efficacy of XELOX regimen as neoadjuvant chemotherapy in the treatment of stage Ⅱ and Ⅲ colon cancer.Methods The clinical data of 50 patients with clinical stage Ⅱ(T4)Ⅲ colon cancer who underwent laparoscopic radical resection at general surgery department of our hospital from January 1,2012 to January 1,2021 were retrospectively analyzed.Patients were divided into neoadjuvant chemotherapy group(NACT)and adjuvant chemotherapy group(ACT)according to whether they received neoadjuvant chemotherapy with XELOX regimen.The general clinical data,adverse reactions of chemotherapy,surgical complications,operation time,intraoperative blood loss,hospitalization time,hospitalization cost,negative conversion rate of tumor markers,tumor remission rate,tumor downstaging rate,tumor response grade after chemotherapy,postoperative disease-free survival curve,and overall survival curve were retrospectively analyzed and compared among the groups.Results There were no significant differences in operative complications,postoperative exhaust time and hospital stay between NACT group and ACT group(P＞0.05).The adverse reactions of chemotherapy,the negative conversion rate of postoperative CEA and CA19-9,the duration of operation,the amount of bleeding,and the hospitalization cost in NACT group were significantly better than those in ACT group(P＜0.05).In terms of DFS and OS survival curves,with the extension of time,the decline of the NACT survival curve was smaller than that of the ACT group,and there was a significant difference in DFS survival curve(P＜0.05),but no significant difference in OS survival curve(P＞0.05).Conclusion XELOX neoadjuvant chemotherapy is safe and effective in the treatment of stage Ⅱ(T4)and stage Ⅲcolon cancer.

Objective To study the relationship between the systemic immune-inflammation （SII） index and the prognosis of intracerebral hemorrhage （ICH） in the acute phase. Methods We retrospectively collected the clinical data of patients with supratentorial ICH admitted to the Department of Neurology of Chifeng Clinical Medical College of Inner Mongolia Medical University from January 2021 to January 2022. The patients were grouped according to their outcomes （a modified Rankin Scale score of 3-6 points was considered as a poor prognosis） and SII index quartiles. The baseline data and SII index of patients with different prognoses were compared. The relationship between the SII index and the National Institutes of Health Stroke Scale （NIHSS） score and hemorrhage volume was analyzed. Results Compared with patients with a good prognosis， those with a poor prognosis had a significantly greater SII index， a significantly larger hemorrhage volume， a significantly higher proportion of intraventricular extension， and significantly higher leukocyte and neutrophil counts （all P<0.001）. Patients with the SII index ≥1.58 had a significantly higher NIHSS score and a significantly larger hemorrhage volume than patients with the SII index ≤0.53 （both P<0.001）. Conclusion The SII index is related to the acute prognosis of patients with supratentorial ICH， suggesting that regulating neuroinflammatory response may improve the prognosis of patients with ICH.
Prognosis

Objective:To compare the efficacy of transcatheter arterial embolization (TAE) with laparotomy in the treatment of severe liver injury.Methods:A retrospective cohort study was conducted to analyze the clinical data of 48 patients with severe liver injury admitted to 909th Hospital of Joint Logistics Support Force (Affiliated Dongnan Hospital of Xianmen University Medical College) from December 2013 to June 2020, including 28 males and 20 females; aged 16-75 years [(45.7±6.2)years]. There were 25 patients with grade III, 15 grade IV and 8 grade V according to the American Association for the Surgery of Trauma (AAST) classification. After general treatments such as infusion and hemostasis, TAE was performed in 26 patients (TAE group) and laparotomy in 22 patients (laparotomy group). The operation time and length of hospital stay were compared between the two groups. Erythrocyte, hemoglobin and serum creatinine were compared before operation and at postoperative 1 day. Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were analyzed before operation and at postoperative 1, 3, 7 days. Complications were observed.Results:All patients were followed up for 12-60 months [(17.1±9.1)months]. The operation time and length of hospital stay were (65.7±9.2)minutes and (21.6±6.6)days in TAE group, significantly shorter than (162.5±28.1)minutes and (31.5±7.4)days in laparotomy group ( P<0.05 or 0.01). There was no significant difference between the two groups referring to erythrocyte, hemoglobin and serum creatinine before operation and at postoperative 1 day (all P>0.05). There was no significant difference in ALT and AST between the two groups before operation (all P>0.05). TAE group showed ALT level of 1 154(884, 1 698)U/L, (975.3±400.9)U/L and (403.4±232.9)U/L at postoperative 1, 3, 7 days, significantly lower than 2 053(1 965, 2 132)U/L, (1 604.1±188.2)U/L and (915.3±160.5)U/L in laparotomy group (all P<0.05). TAE group showed AST level of (1 313.2±542.0)U/L, 525(302, 971)U/L and 174(84, 324)U/L at postoperative 1, 3, 7 days, significantly lower than (1 962.9±245.4)U/L, 1 478(1 089, 1 677)U/L and 837(674, 1 006)U/L in laparotomy group ( P<0.05 or 0.01). The complication rate was 26.9% (7/26) in TAE group, significantly lower than 59.1% (13/22) in laparotomy group ( P<0.05). Conclusion:For severe liver injury, TAE can significantly shorten operation time and length of hospital stay, accelerate the recovery of liver function and reduce the complication rate in comparison with laparotomy.

Background: Developmental hypothyroidism impairs learning and memory in offspring, which depend on extensive neuronal circuits in the entorhinal cortex, together with the hippocampus and neocortex. The entorhinal-dentate gyrus pathway is the main entrance of memory circuits. We investigated whether developmental hypothyroidism impaired the morphological development of the entorhinal-dentate gyrus pathway. Methods: We examined the structure and function of the entorhinal-dentate gyrus pathway in response to developmental hypothyroidism induced using 2-mercapto-1-methylimidazole. Results: 1,1´-Dioctadecyl-3,3,3´,3´-tetramethylindocarbocyanine perchlorate tract tracing indicated that entorhinal axons showed delayed growth in reaching the outer molecular layer of the dentate gyrus at postnatal days 2 and 4 in hypothyroid conditions. The proportion of fibers in the outer molecular layer was significantly smaller in the hypothyroid group than in the euthyroid group at postnatal day 4. At postnatal day 10, the pathway showed a layer-specific distribution in the outer molecular layer, similar to the euthyroid group. However, the projected area of entorhinal axons was smaller in the hypothyroid group than in the euthyroid group. An electrophysiological examination showed that hypothyroidism impaired the long-term potentiation of the perforant and the cornu ammonis 3–cornu ammonis 1 pathways. Many repulsive axon guidance molecules were involved in the formation of the entorhinaldentate gyrus pathway. The hypothyroid group had higher levels of erythropoietin-producing hepatocyte ligand A3 and semaphorin 3A than the euthyroid group. Conclusion We demonstrated that developmental hypothyroidism might influence the development of the entorhinal-dentate gyrus pathway, contributing to impaired long-term potentiation. These findings improve our understanding of neural mechanisms for memory function.

Abstract As a common neurodevelopmental disorder, dyslexia causes a series of adverse outcomes throughout the lifespan, while the public is less aware to it. This review aims to provide experiences for completing domestic policies, as well as to improve the understanding of dyslexia of the public in China by introducing some public health policies, interventions, and special service organizations and the associations related to dyslexia domestic and overseas. The information discussed in this article may serve as a useful model developing or revising policies or guidelines for meeting the needs of children with dyslexia.

Objective: To examine the Quality of life among school-aged children with dyslexia in target city and to provide scientific evidence for improving the quality of life of children with dyslexia. Methods: By using cluster sampling,students from grade 3 to grade 6 from 6 primary schools in a middle-sized were selected and administered with questionnaire survey. According to the criteria of dyslexia, dyslexic children and non-dyslexic children were identified and the difference of the Quality of Life was compared. Results: Totally 3 673 children were collected, and 119 of them were identified as dyslexia(3.24%).The prevalence of dyslexia differed by gender,grades,educational level of parents(χ2=24.77,11.75,18.50,9.79,P<0.05). The Quality of Life which below the average proportion accounted for 30.3% of dyslexic children and 16.7% of normal children. Quality of life scored signiticantly different between dyslexic children and non-dyslexia children, including psychosocial functioning domain(134.54±30.88)(143.49±32.53), physical and mental health domain(2.71±0.84)(2.92±0.81) vs (2.83±0.90)(3.06±0.87), the living satisfaction domain(2.95±0.87)(3.14±0.87)(t=-6.09，-5.48，-5.44，-4.50，P<0.01),with dyslexic group significantly lower than that of non-dyslexic group. Conclusion The Quality of Life of Dyslexic children was in a poor condition.

Objective: To investigate the association between the learning and living style with developmental dyslexia in school-aged children. Methods: Using stratified cluster sampling, a total of 11 668 schoolaged children (grade 2 to 6) in the cities of Wuhan, Hangzhou and Jining were selected to participate in this programme from April 2017 to April 2018. The investigation tools combined the questionnaire on associated factors for reading ability, Dyslexia Checklist for Chinese Children and Pupil Rating Scale Revised Screening for Learning. Results: Pupils with more than 20 minutes of exercise each day (OR=0.43-0.64) and at least 1-2 times per week (OR=0.34-0.48) had a lower risk of dyslexia. The association was observed between going to the library more than 1-2 times per semester (OR=0.41-0.62) and the decrease risk of dyslexia. Lacking active learning (OR=7.76, 95%CI=4.71-12.78), scheduled reading time (OR=2.55, 95%CI=2.01-3.23) and extracurricular training classes (OR=1.62, 95%CI=1.27-2.07) were positively associated with dyslexia. There was no significant difference in screen time duration between dyslexic and non-dyslexic children. Using electronic devices for learning was associated with decreased risk of dyslexia (OR=0.47, 95%CI=0.33-0.67), while playing video games was correlated with increased risk of dyslexia (OR=1.67, 95%CI=1.16-2.41). Conclusion Physical exercise, good study habits and using the electronic products in a proper way could reduce the risk of dyslexia to a certain extent. Parents and teachers should guide the school-aged children to develop a good learning and living style.