Goiter is a kind of non-inflammatory and non-neoplastic hyperplasia and enlargement. Many studies have shown that substances such as thiocyanates and isothiocyanates can prevent the development of a variety of tumors. However, some studies have also found that such substances can lead to goiter. In this article, relevant information on common goitrogen in food are collected to explore their mechanism of action, laying a foundation for guiding residents to maintain a healthy and balanced diet.

OBJECTIVE To explore the effect mechanism of Eucommia ulmoides on improving postpartum depression in rats. METHODS Pregnant rats were randomly divided into normal group， postpartum depression group， and low-dose and high-dose groups of E. ulmoides （1.34， 2.68 g/kg， calculated by crude drug）， with 10 rats in each group. Except for the normal group， the rats in other groups suffered from fear stress to induce postpartum depression model during pregnancy； at the same time of modeling， the administration groups were given relevant medicine intragastrically， while the normal group and postpartum depression group were given physiological saline intragastrically for 21 days. Postpartum behaviors of rats during the experiment were assessed using the open field test， Morris water maze test and sucrose preference test. Additionally， the levels of corticosterone （CORT） in serum， corticotropin releasing factor （CRF） and urocortin （UCN） in hypothalamus， and adrenocorticotropic hormone （ACTH） in hypophysis were detected； meanwhile， the protein expressions of CRF receptor 1 （CRFR1）， CRFR2， and voltage-dependent anion channel 1 （VDAC1） in hippocampal tissue were measured； the proportions of apoptotic cells and JC-1 high potential cells in hippocampal tissue were determined， and the morphology of hippocampal tissue was observed. RESULTS Compared with postpartum depression group， the high-dose group of E. ulmoides showed improvements in appetite， mental state， and hair color in rats； their body weight had increased； the scores of vertical movement， horizontal movement and self-sorting significantly increased； from the 2ed to 4th day avoidance latency significantly shortened， and the times of crossing the platform and the time of crossing the platform Δ 基金项目国家自然科学基金青年基金项目（No.82204789） significantly increased/prolonged （P＜0.05）； the ratio of glucose and water consumption significantly increased at 20 days of pregnancy and 30 days postpartum （P＜0.05）； the levels of CRF， UCN， ACTH and CORT， phagocytic rate， protein expressions of CRFR2 and VDAC1， and the proportion of apoptosis cells in hippocampal tissue were decreased significantly （P＜0.05）； the proportion of JC-1 high potential cells significantly increased （P＜0.05）， and the phenomenon of edema around neuronal cells was significantly improved. CONCLUSIONS E. ulmoides can improve postpartum depression by inhibiting excessive activation of hypothalamic-pituitary-adrenal axis， decreasing the expression of CRFR2， thereby inhibiting the expression of VDAC1， and decreasing the apoptosis of neuronal cells.

OBJECTIVE To explore the effect mechanism of Eucommia ulmoides on improving postpartum depression in rats. METHODS Pregnant rats were randomly divided into normal group， postpartum depression group， and low-dose and high-dose groups of E. ulmoides （1.34， 2.68 g/kg， calculated by crude drug）， with 10 rats in each group. Except for the normal group， the rats in other groups suffered from fear stress to induce postpartum depression model during pregnancy； at the same time of modeling， the administration groups were given relevant medicine intragastrically， while the normal group and postpartum depression group were given physiological saline intragastrically for 21 days. Postpartum behaviors of rats during the experiment were assessed using the open field test， Morris water maze test and sucrose preference test. Additionally， the levels of corticosterone （CORT） in serum， corticotropin releasing factor （CRF） and urocortin （UCN） in hypothalamus， and adrenocorticotropic hormone （ACTH） in hypophysis were detected； meanwhile， the protein expressions of CRF receptor 1 （CRFR1）， CRFR2， and voltage-dependent anion channel 1 （VDAC1） in hippocampal tissue were measured； the proportions of apoptotic cells and JC-1 high potential cells in hippocampal tissue were determined， and the morphology of hippocampal tissue was observed. RESULTS Compared with postpartum depression group， the high-dose group of E. ulmoides showed improvements in appetite， mental state， and hair color in rats； their body weight had increased； the scores of vertical movement， horizontal movement and self-sorting significantly increased； from the 2ed to 4th day avoidance latency significantly shortened， and the times of crossing the platform and the time of crossing the platform Δ 基金项目国家自然科学基金青年基金项目（No.82204789） significantly increased/prolonged （P＜0.05）； the ratio of glucose and water consumption significantly increased at 20 days of pregnancy and 30 days postpartum （P＜0.05）； the levels of CRF， UCN， ACTH and CORT， phagocytic rate， protein expressions of CRFR2 and VDAC1， and the proportion of apoptosis cells in hippocampal tissue were decreased significantly （P＜0.05）； the proportion of JC-1 high potential cells significantly increased （P＜0.05）， and the phenomenon of edema around neuronal cells was significantly improved. CONCLUSIONS E. ulmoides can improve postpartum depression by inhibiting excessive activation of hypothalamic-pituitary-adrenal axis， decreasing the expression of CRFR2， thereby inhibiting the expression of VDAC1， and decreasing the apoptosis of neuronal cells.

Objective:To explore the application value of qualitative characteristics and quantitative parameters of contrast-enhanced ultrasound (CEUS) in the differential diagnosis of pancreatic ductal adenocarcinoma (PDAC) and non-PDAC presenting as pancreatic solid focal lesions.Methods:A retrospective analysis was conducted on 64 cases of PDAC(the PDAC group) and 52 cases of non-PDAC(the non-PDAC group) who underwent CEUS examination at Tianjin Medical University Cancer Institute and Hospital from July 2022 to June 2023. Clinical characteristics, two-dimensional ultrasound features, CEUS qualitative characteristic, and quantitative parameters were compared between the two groups. ROC curves were plotted, and the Delong test was used to evaluate the diagnostic performance of qualitative and quantitative analyses in distinguishing PDAC from non-PDAC. Binary logistic regression analysis was employed to assess the independent predictors of PDAC.Results:①There were significant differences in serum CA19-9, lesion size, boundary, the main pancreatic duct (MPD) diameter, degree of enhancement and enhancement pattern between the PDAC group and the non-PDAC group (all P<0.05). ②The relative peak intensity (rPE), and relative wash-in and wash-out area under the curve (rWiWoAUC) were lower in the PDAC group than the non-PDAC group, with statistically significant differences(all P<0.001). ③The areas under the curve (AUC) for diagnosing PDAC using enhancement pattern, venous phase(VP) enhancement degree, rPE, and rWiWoAUC were 0.698, 0.707, 0.863, and 0.867, respectively. The AUCs of quantitative parameters were superior to those of qualitative characteristics, with statistically significant differences ( P<0.05). Using CEUS mode B, low VP enhancement, rPE<72.44, and rWiWoAUC<86.59 as cut-off values, the accuracies for diagnosing PDAC were 0.698, 0.741, 0.828, and 0.802, respectively. ④Serum CA19-9, lesion size, MPD diameter, rPE, and rWiWoAUC were independent predictors of PDAC (all P<0.05). Conclusions:CEUS qualitative and quantitative analyses are helpful in the differential diagnosis of PDAC and non-PDAC, with rPE and rWiWoAUC being useful indicators for diagnosing PDAC.

Liver ischemia-reperfusion injury (IRI) is a significant factor contributing to liver dysfunction following surgical procedures such as liver transplantation and hepatectomy, and its pathogenesis is closely associated with oxidative stress and immune responses. However, effective prevention and therapeutic strategies are still lacking. Short-chain fatty acids (SCFAs), primarily produced by the fermentation of gut microbiota, are the major source of these acids in the human body. Research has indicated that SCFAs play a significant role in oxidative stress and immune response. This review primarily focuses on the advancements on the role of SCFAs, the main metabolic byproducts of gut microbiota, in liver IRI, with a view to provide insights for the development of prevention and treatment strategies for liver IRI.

Cognitive impairment is a kind of senile disease that leads to the decline of personality and behavior ability of the elderly,which seriously affects the quality of daily life of patients.The prevalence rate of the disease increases year by year with the acceleration of the aging process of the society,and its incidence is affected by many risk factors.At this stage,the curative effect for middle and advanced patients is poor.So early identification and intervention to delay the progression of cognitive impairment have become the focus of relevant research.Blood pressure variability can lead to damage of target organs such as heart,brain tissue and kidney,which is closely related to cognitive impairment.In order to expand a new perspective of early intervention in cognitive impairment,this paper reviews the effects of blood pressure variability on different cognitive impairment and its possible pathogenic mechanism.

The construction of a medication safety culture is important for medication safety management and rational drug use.The construction of medication safety culture standards is formulated based on relevant national policies and regulations,accreditation standards for hospitals,expert opinions,the current situation,and the development trend of the healthcare industry.With scientificity,general applicability,instructive guidance,and practicality,they standardized basic requirements,management processes,and improvement of the construction of medication safety culture.To facilitate understanding and the implementation of the standards,we describe the process of standards formulation and explain the key points of the standards.

Traditional Chinese medicine monomer has certain curative effects in tumor treatment,but its low targeting and difficulty in gathering at the tumor site limit its application.As a new type of drug delivery method,environmentally responsive nano drug delivery system has the advantages of targeted drug delivery,reducing drug side effects,and environmentally responsive release,and has been widely used in tumor treatment.In this paper,by consulting and sorting out the relevant literature,the general situation of traditional Chinese medicine monomers in the treatment of tumors,the classification of environment-responsive traditional Chinese medicine monomer nano drug delivery system,and its application in tumor treatment are summarized in three aspects,to provide ideas for solving the limitations of traditional Chinese medicine monomer in the treatment of tumor.

Objective:To study the diagnostic value of artificial intelligence B-ultrasound image computer-aided diagnosis system (hereinafter referred to as intelligent ultrasound system) in adult goiter.Methods:In June 2022 and March 2023, two phases of thyroid disease survey were carried out in 4 cities in Anhui Province. One village was selected in each city, and 250 adults were selected as survey subjects in each village. Adult bilateral thyroid area was scanned by both intelligent ultrasound system and conventional ultrasound scanning equipment, and the effectiveness of intelligent ultrasound system in the diagnosis of goiter was analyzed based on the results of conventional ultrasound examination. Receiver operating characteristic (ROC) curve was drawn, and Kappa test was used to analyze the consistency between intelligent ultrasound system and conventional ultrasound examination in the diagnosis of goiter. At the same time, Spearman correlation analysis and Bland-Altman method were used to evaluate the consistency of the two methods in measuring thyroid volume.Results:After screening and removing outliers and missing values, a total of 910 adults were included, including 253 males (27.80%) and 657 females (72.20%). The age was (45.92 ± 10.20) years old, ranging from 18 to 60 years old. The sensitivity, specificity, and accuracy of the intelligent ultrasound system for diagnosing adult goiter were 80.00%, 99.67%, and 99.56%, respectively. The area under the ROC curve (AUC) was 0.996, which was consistent with the results of conventional ultrasound examination for diagnosing goiter ( κ = 0.67, P < 0.001). After controlling for variables such as gender, thyroid function, and thyroid nodules, the intelligent ultrasound system showed good consistency with conventional ultrasound examination in the diagnosis of goiter in females, adults with thyroid dysfunction, and adults without thyroid nodules ( κ = 0.66, 0.80, 0.80, P < 0.001). The consistency in the diagnosis of goiter in adults with thyroid nodules was moderate ( κ = 0.56, P < 0.001). Spearman correlation analysis showed a highly positive correlation between the measurement results of adult thyroid volume by intelligent ultrasound system and conventional ultrasound examination ( r = 0.88, P < 0.001). The Bland-Altman method results showed that only 4.62% (42/910) of points in adults were outside the 95% consistency limit, indicating good consistency between intelligent ultrasound system and conventional ultrasound examination in measuring thyroid volume (< 5%). The proportion of points outside the 95% consistency limit in males, adults with thyroid dysfunction, and adults with thyroid nodules was 6.72% (17/253), 5.83% (12/206), and 6.45% (12/186), respectively. Conclusions:The intelligent ultrasound system has certain diagnostic value for adult goiter and has good consistency with conventional ultrasound examination for thyroid volume measurement. However, the accuracy of diagnosis for males and adults with thyroid nodules still needs to be improved.

The review focuses upon the mechanism of exosome derived from mesenchymal stem cells in hepatic ischemia-reperfusion injury(IRI)to provide references for clinical application of exosomes in alleviating hepatic IRI.