1.Concentrations characteristics of common air pollutants and health risk assessment of practitioners in hair and beauty salons in Shanghai, 2016–2024
Jiao CHEN ; Tian CHEN ; Xiaoyu WANG ; Yewen SHI ; Fengchan HAN ; Yi HE ; Xiaodong SUN ; Xianliang WANG
Journal of Environmental and Occupational Medicine 2026;43(3):326-332
Background As common public facilities essential to daily life, hair and beauty salons frequently contain various airborne toxic and hazardous pollutants potentially leading to adverse health effects for salon practitioners. Objective To characterize the indoor air pollution profiles of common contaminants in hair and beauty salons in Shanghai and to evaluate the associated health risks for practitioners, in order to provide a scientific basis for strengthening the public health management in Shanghai and protecting the health of practitioners. Methods The air quality monitoring data of hair and beauty salons in Shanghai from 2016 to 2024 were obtained from the “Health Hazard Factors Monitoring Program for Public Places” of the National Institute of Environmental Health, Chinese Center for Disease Control and Prevention. Monitoring indicators included particulate matter ≤10 μm in aerodynamic diameter (PM10), particulate matter ≤2.5 μm in aerodynamic diameter (PM2.5), formaldehyde, ammonia, benzene, toluene, and xylene. Indicator compliance rates were calculated across various years in accordance with GB 9666-1996 Hygienic standard for barber shop and beauty shop and GB 37488-2019 Hygiene indicators and limit for public places; specifically, PM2.5 was assessed against the limits stipulated in GB/T 18883-2022 Standards for indoor air quality. A questionnaire survey was conducted among salon practitioners to collect weekly working days and daily working hours. The non-carcinogenic risks associated with inhalation exposure to formaldehyde, ammonia, benzene, toluene, and xylene as well as the carcinogenic risks posed by formaldehyde and benzene were evaluated following WS/T 777-2021 Technical guide for environmental health risk assessment of chemical exposure and the U.S. Environmental Protection Agency inhalation risk model. Results The overall compliance rates of PM10, formaldehyde, ammonia, benzene, and toluene in the air of hair and beauty salons in Shanghai from 2016 to 2024 were 92.13%, 96.59%, 96.15%, 94.93%, and 94.97%, respectively; the overall compliance rate of xylene was a little lower (85.92%), and the overall compliance rate of PM2.5 was 57.18%. The P50 concentrations of PM10, PM2.5, formaldehyde, ammonia, benzene, toluene, and xylene did not exceed the corresponding limits. The P50 of non-carcinogenic risk indicator (hazard quotient, HQ) for formaldehyde, ammonia, benzene, toluene, and xylene were <1. The probabilities of non-carcinogenic risk HQ >1 for formaldehyde and xylene were 41.4% and 10.9%, respectively, which were higher than that of other pollutants. The P50 of carcinogenic risk (CR) for formaldehyde and benzene were between 1.0×10−6 and 1.0×10−4, while the probabilities of CR >1.0×10−4 were 16.9% and 14.0%, respectively. Conclusion The overall compliance rate of common pollutant concentrations in the air of hair and beauty salons in Shanghai is high, and the hygienic condition meets the requirements of national standards. The non-carcinogenic health risks posed by formaldehyde and xylene to employees (with formaldehyde being more prominent), as well as the carcinogenic risks associated with formaldehyde and benzene, deserve heightened attention in future health supervision.
2.The Role and Regulatory Mechanisms of FOXO1 in Hepatic Lipid Deposition
Meng JIA ; Fang-Hui LI ; Shi-Zhan YAN ; Ai-Ju LI ; Yi-Le WANG ; Pin-Shi NI ; Jia-Han HE ; Yin-Lu LI
Progress in Biochemistry and Biophysics 2026;53(4):905-919
Metabolic associated fatty liver disease (MAFLD) is fundamentally driven by an imbalance in hepatic fatty-acid flux: the influx of fatty acids exceeds the liver’s capacity for disposal, resulting in excessive hepatic lipid accumulation, predominantly in the form of triglycerides (TGs). The occurrence and progression of MAFLD depend on disordered regulation across multiple metabolic steps, including fatty-acid uptake, de novo lipogenesis (DNL), fatty-acid oxidation (FAO), and very low-density lipoprotein (VLDL) export. Forkhead box protein O1 (FOXO1) is a key transcriptional regulator within the hepatic network coordinating glucose and lipid metabolism. Under metabolic stress and insulin resistance (IR), FOXO1 expression is frequently increased, whereas its inhibitory phosphorylation is reduced. These changes enhance FOXO1 nuclear localization and transcriptional activity, thereby reprogramming the expression of genes related to metabolism in the liver. Because hepatic lipid deposition is the central pathological feature of MAFLD, the functional status of FOXO1 directly influences hepatic lipid homeostasis. Growing evidence suggests that FOXO1 can exert bidirectional, environment-dependent effects on hepatic lipid accumulation; however, the molecular basis for this functional switch remains incompletely understood. This review systematically summarizes the biological functions and regulatory mechanisms of FOXO1 and its roles in hepatic lipid metabolism, with a particular focus on its crosstalk with insulin signaling. FOXO1 expression is shaped by RNA modifications and epigenetic regulation mediated by non-coding RNAs. Its transcriptional output is precisely governed by post-translational modifications—such as phosphorylation and acetylation—as well as by coordinated nucleocytoplasmic shuttling. Notably, these regulatory patterns vary markedly across nutritional states, degrees of insulin resistance, and stages of disease. In the fed state, insulin/IGF-1 signaling activates the PI3K-AKT pathway, promoting the inhibitory phosphorylation of FOXO1 and facilitating additional modifications, including acetylation, methylation, and ubiquitination. Together, these events drive FOXO1 export from the nucleus and dampen its transcriptional activity, suppressing gluconeogenesis and constraining lipogenic programs. Conversely, during fasting or when insulin signaling is weakened, FOXO1 inhibition is relieved. FOXO1 accumulates in the nucleus, binds to DNA, and regulates the transcription of downstream target genes. Mechanistically, FOXO1 can aggravate hepatic lipid accumulation by activating genes involved in TG synthesis while repressing FAO-related pathways, thereby favoring storage over oxidation. However, under specific conditions, FOXO1 may also alleviate the hepatic lipid burden by promoting TG hydrolysis and enhancing VLDL secretion, thereby reducing the net hepatic lipid load. In addition, lipotoxic signals mediated by ceramides and diacylglycerols (Cer/DAG) activate atypical protein kinase C (aPKC), further exacerbating the disruption of the AKT-FOXO1 axis. This vicious cycle ultimately produces a metabolic paradox in which increased hepatic glucose output coexists with persistent, insulin-independent lipogenesis, accelerating MAFLD progression. Importantly, FOXO1 regulation is not uniform: during early metabolic overload, insulin-mediated suppression may remain effective, whereas in advanced insulin resistance, the loss of AKT control permits sustained FOXO1 activity. Such stage-dependent dynamics may help explain why FOXO1 can either promote steatosis or, in certain contexts, support programs that facilitate lipid turnover. Accordingly, interventions should be liver-specific and tuned to the disease stage, aiming to curb maladaptive FOXO1 signaling while preserving its capacity to promote triglyceride hydrolysis and VLDL secretion when advantageous. Overall, this review offers an important perspective on MAFLD pathogenesis, emphasizing FOXO1 as a potential therapeutic target and providing a theoretical basis for developing liver-specific, disease-course-dependent precision interventions.
3.Therapeutic efficacy of ruxolitinib combined with low-dose hormone in aGVHD after allogeneic hematopoietic stem cell transplantation
Yue HU ; Xupai ZHANG ; Sihan LAI ; Shan ZHANG ; Lei MA ; Xiao WANG ; Yan DENG ; Ying HAN ; Ying HE ; Guangcui HE ; Hai YI
Chinese Journal of Blood Transfusion 2026;39(4):506-512
Objective: To evaluate the efficacy and safety of ruxolitinib combined with low-dose hormone for patients with acute graft-versus-host disease (aGVHD) after allogeneic hematopoietic stem cell transplantation (allo-HSCT). Methods: Thirty patients with aGVHD after allo-HSCT admitted to the Department of Hematology of the General Hospital of Western Theater Command from November 2021 to November 2024 were retrospectively analyzed. All patients were treated with low-dose hormone (methylprednisolone 0.3-1 mg kg
-d
) combined with ruxolitinib 5-10 mg d
. The efficacy and adverse reactions were observed during the follow-up period to analyze the survival outcomes of the patients. Results: A total of 30 patients with aGVHD after allo-HSCT were included in this study, consisting of 15 (50%) males and 15 (50%) females with a median age of 34 year-old (ranging from 14 to 62). Classification by disease type: there were 18 cases of acute myeloid leukemia, 4 cases of acute lymphoblastic leukemia, 4 cases of aplastic anemia, and 4 cases of myelodysplastic syndrome. Classification by aGVHD severity: there were 27 cases (90%) of Ⅱ-Ⅳ degree aGVHD and 11 cases (36.7%) of Ⅲ-Ⅳ degree aGVHD. Ruxolitinib in combination with low-dose glucocorticoid treatment yield responses in 28 (93.3%) patients, of which 27 (90%) achieved complete remission (CR), while 1 (3.3%) showed partial remission (PR). One patient (3.3%) had no response (NR), and 1 patient (3.3%) exhibited progressed disease (PD). Overall survival (OS) at 1 year of transplantation was 73.9% (95%CI 49.5% to 87.7%), progression-free survival (PFS) was 93.3% (95%CI 75.9% to 98.3%), non-relapse mortality (NRM) was 20.6% (95%CI 7.9% to 47.4%), and median survival time was 27.6 months. Conclusion: Ruxolitinib combined with low-dose hormones is safe and effective in the treatment of aGVHD after allo-HSCT.
4.Treatment Principles and Paradigm of Diabetic Microvascular Complications Responding Specifically to Traditional Chinese Medicine
Anzhu WANG ; Xing HANG ; Lili ZHANG ; Xiaorong ZHU ; Dantao PENG ; Ying FAN ; Min ZHANG ; Wenliang LYU ; Guoliang ZHANG ; Xiai WU ; Jia MI ; Jiaxing TIAN ; Wei ZHANG ; Han WANG ; Yuan XU ; .LI PINGPING ; Zhenyu WANG ; Ying ZHANG ; Dongmei SUN ; Yi HE ; Mei MO ; Xiaoxiao ZHANG ; Linhua ZHAO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(5):272-279
To explore the advantages of traditional Chinese medicine (TCM) and integrative TCM-Western medicine approaches in the treatment of diabetic microvascular complications (DMC), refine key pathophysiological insights and treatment principles, and promote academic innovation and strategic research planning in the prevention and treatment of DMC. The 38th session of the Expert Salon on Diseases Responding Specifically to Traditional Chinese Medicine, hosted by the China Association of Chinese Medicine, was held in Beijing, 2024. Experts in TCM, Western medicine, and interdisciplinary fields convened to conduct a systematic discussion on the pathogenesis, diagnostic and treatment challenges, and mechanism research related to DMC, ultimately forming a consensus on key directions. Four major research recommendations were proposed. The first is addressing clinical bottlenecks in the prevention and control of DMC by optimizing TCM-based evidence evaluation systems. The second is refining TCM core pathogenesis across DMC stages and establishing corresponding "disease-pattern-time" framework. The third is innovating mechanism research strategies to facilitate a shift from holistic regulation to targeted intervention in TCM. The fourth is advancing interdisciplinary collaboration to enhance the role of TCM in new drug development, research prioritization, and guideline formulation. TCM and integrative approaches offer distinct advantages in managing DMC. With a focus on the diseases responding specifically to TCM, strengthening evidence-based support and mechanism interpretation and promoting the integration of clinical care and research innovation will provide strong momentum for the modernization of TCM and the advancement of national health strategies.
5.Randomized Controlled Study on Wenshen Yangxue Decoction Plus Endometrial Microstimulation for Polycystic Ovary Syndrome (PCOS) Infertility with Syndrome of Kidney-Yang Deficiency and Blood Stasis
Qianqian HUANG ; Qian HAN ; Mingwei XIN ; Junqin HE ; Jingshang WANG ; Xiaodan YIN ; Mengyuan LI ; Yanxiao YI ; Yanli TANG ; Yiting WANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(20):181-190
ObjectiveTo evaluate the clinical efficacy and safety of Wenshen Yangxue decoction combined with endometrial microstimulation in the treatment of infertile patients with polycystic ovary syndrome (PCOS, syndrome of kidney-Yang deficiency and blood stasis). MethodsA randomized, positive-drug parallel-controlled, open-label clinical study was conducted. A total of 240 infertile PCOS patients with the syndrome of kidney-Yang deficiency and blood stasis who met the inclusion and exclusion criteria were randomly assigned into 4 groups, with 60 patients in each group. The control group was treated with clomiphene citrate (50-100 mg·d-¹, orally for 5-10 consecutive days) for ovulation induction. On the basis of the therapy in the control group, the Wenshen group was additionally treated with Wenshen Yangxue decoction (250 mL, warm oral administration, twice daily, in the morning and evening), and the stimulation group received endometrial microstimulation during the early follicular phase. The combined group was treated with clomiphene citrate plus Wenshen Yangxue decoction (at the same dosages as aforementioned) and endometrial microstimulation. The course of treatment for all the groups was 3 menstrual cycles. The pregnancy rate, ovulation status, sex hormone levels, glucose metabolism indicators, coagulation function, endometrial thickness, traditional Chinese medicine (TCM) symptom scores, and adverse reactions were observed in each group. ResultsA total of 239 patients were included in the final analysis, with 59 patients in the Wenshen group and 60 patients in each of the other three groups. The pregnancy rates were 43.3%(26/60) in the combined group and 32.2%(19/60) in the Wenshen group, both significantly higher than that (10%) in the control group (χ2=17.56,P<0.01). Compared with the control group, the combined and Wenshen groups had increased mature follicle rates (P<0.01), while the Wenshen group showed a decreased luteinization rate (P<0.05). All the groups exhibited significant reductions in TCM symptom scores after treatment, and the Wenshen and combined groups had lower scores than the control group (P<0.01). No statistically significant difference was found in the incidence of adverse events among the four groups, and all the adverse events were mild. ConclusionWenshen Yangxue decoction combined with endometrial microstimulation can alleviate the TCM symptoms of infertile PCOS patients with the syndrome of kidney-Yang deficiency and blood stasis, promote follicular maturation and ovulation, increase the cumulative pregnancy rate, and has good safety. It can provide new clinical evidence for the integrated traditional Chinese and Western medicine treatment of PCOS infertility.
6.Randomized Controlled Study on Wenshen Yangxue Decoction Plus Endometrial Microstimulation for Polycystic Ovary Syndrome (PCOS) Infertility with Syndrome of Kidney-Yang Deficiency and Blood Stasis
Qianqian HUANG ; Qian HAN ; Mingwei XIN ; Junqin HE ; Jingshang WANG ; Xiaodan YIN ; Mengyuan LI ; Yanxiao YI ; Yanli TANG ; Yiting WANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(20):181-190
ObjectiveTo evaluate the clinical efficacy and safety of Wenshen Yangxue decoction combined with endometrial microstimulation in the treatment of infertile patients with polycystic ovary syndrome (PCOS, syndrome of kidney-Yang deficiency and blood stasis). MethodsA randomized, positive-drug parallel-controlled, open-label clinical study was conducted. A total of 240 infertile PCOS patients with the syndrome of kidney-Yang deficiency and blood stasis who met the inclusion and exclusion criteria were randomly assigned into 4 groups, with 60 patients in each group. The control group was treated with clomiphene citrate (50-100 mg·d-¹, orally for 5-10 consecutive days) for ovulation induction. On the basis of the therapy in the control group, the Wenshen group was additionally treated with Wenshen Yangxue decoction (250 mL, warm oral administration, twice daily, in the morning and evening), and the stimulation group received endometrial microstimulation during the early follicular phase. The combined group was treated with clomiphene citrate plus Wenshen Yangxue decoction (at the same dosages as aforementioned) and endometrial microstimulation. The course of treatment for all the groups was 3 menstrual cycles. The pregnancy rate, ovulation status, sex hormone levels, glucose metabolism indicators, coagulation function, endometrial thickness, traditional Chinese medicine (TCM) symptom scores, and adverse reactions were observed in each group. ResultsA total of 239 patients were included in the final analysis, with 59 patients in the Wenshen group and 60 patients in each of the other three groups. The pregnancy rates were 43.3%(26/60) in the combined group and 32.2%(19/60) in the Wenshen group, both significantly higher than that (10%) in the control group (χ2=17.56,P<0.01). Compared with the control group, the combined and Wenshen groups had increased mature follicle rates (P<0.01), while the Wenshen group showed a decreased luteinization rate (P<0.05). All the groups exhibited significant reductions in TCM symptom scores after treatment, and the Wenshen and combined groups had lower scores than the control group (P<0.01). No statistically significant difference was found in the incidence of adverse events among the four groups, and all the adverse events were mild. ConclusionWenshen Yangxue decoction combined with endometrial microstimulation can alleviate the TCM symptoms of infertile PCOS patients with the syndrome of kidney-Yang deficiency and blood stasis, promote follicular maturation and ovulation, increase the cumulative pregnancy rate, and has good safety. It can provide new clinical evidence for the integrated traditional Chinese and Western medicine treatment of PCOS infertility.
7.Research progress on circular RNA in periodontitis
HE Yi ; HAN Yaoling ; YU Dongsheng
Journal of Prevention and Treatment for Stomatological Diseases 2025;33(3):252-259
Periodontitis, a chronic inflammatory disease caused by plaque biofilm, is characterized by the irreversible pathological destruction of periodontal supporting tissues, including gums, periodontal membranes, alveolar bone, and cementum, resulting in tooth loosening and dislocation in severe cases. Currently, research on the pathogenesis, early diagnosis, and treatment of periodontitis is limited. Circular RNAs (circRNAs), previously considered “splicing noise”, have gained increasing research attention with the development of high-throughput sequencing technologies and bioinformatics. CircRNAs are non-coding RNAs lacking a 5' cap and 3' poly(A) tail, with a unique covalently closed ring structure, high expression, long half-life, and resistance to nuclease degradation, which can regulate splicing, encode proteins, and act as microRNA and RNA-binding protein sponges. In recent years, circRNAs have been reported to be involved in the occurrence and development of periodontitis, suggesting its potential role as a therapeutic target for periodontitis treatment. In this study, we described the biological function of circRNAs and their role in the development of periodontitis and the regulation of periodontal homeostasis and immune microenvironment. We found that circRNAs affect periodontal homeostasis and immune microenvironment by regulating the apoptosis of periodontal tissue cells (such as periodontal ligament stem cells and gingival fibroblasts) and regulating immune cells or cytokines, respectively. This review article summarizes the latest research progress on the association between circRNAs and periodontitis to provide a scientific basis for the development of novel diagnostic, therapeutic, and prognostic strategies for periodontitis.
8.Cross-sectional study of drug resistance in newly diagnosed HIV-1 infected patients in Shanghai
Qianru LIN ; Xuqin WANG ; Wenqi TANG ; Yuan DONG ; Qing YUE ; Chunyan HE ; Xiaolei YU ; Changhe LIU ; Yiqing HAN ; Wanqing FENG ; Zhen NING ; Xin SHEN ; Xin CHEN ; Yi LIN
Chinese Journal of Experimental and Clinical Virology 2025;39(1):69-74
Objective:To investigate the drug resistance of newly diagnosed HIV-1 infected patients in Shanghai and to provide reference value for clinical antiretroviral therapy (ART).Methods:The peripheral venous blood plasma of 196 newly diagnosed HIV-1 infected patients screened according to the inclusion and exclusion criteria at the Shanghai Public Health Clinical Center from April to June 2023 was collected, HIV-1 RNA was extracted, the pol region was amplified by reverse transcription-polymerase chain reaction (RT-PCR) for sequencing, the mutation sites and ART drug resistance were analyzed.Results:The plasma of 196 newly diagnosed HIV-1 infected patients was amplified successfully in 162 cases (amplification success rate was 82.65%). The subtypes consisted of CRF07_BC(51.23%), CRF01_AE (27.78%), and others (6.79%), CRF55_01B (5.56%), B (3.70%), CRF01_AE/B (3.70%) and CRF08_BC (1.23%). The overall transmitted drug resistance rate was 7.41%, the protease inhibitors (PIs), non-nucleoside/nucleotide reverse transcriptase inhibitors (NNRTIs), nucleoside/nucleotide reverse transcriptase inhibitors (NRTIs), integrase inhibitors (INSTIs) resistance rates were 3.09%, 3.70%, 0.00% and 0.62%, respectively. The proportion of NNRTIs-related mutation sites in B (66.67%) and CRF55_01B (88.89%) was higher than that in CRF07_BC (13.25%); the proportion of NNRTIs-related mutation sites in CRF55_01B (88.89%) was higher than that in CRF01_AE (22.22%) and other subtypes (18.18%), the difference was statistically significant (all P<0.05). Multivariate logistic regression analysis showed that the probability of PIs-related mutation sites in CRF01_AE/B was 21.71 times that of CRF07_BC[odds ratio ( OR)=21.71, 95% confidence interval ( CI): 3.36-140.27, P=0.001]. Conclusions:The transmitted drug resistance among newly diagnosed HIV-1 infected patients in Shanghai is at the moderate epidemic level, mainly NNRTIs and PIs-related drug resistance, and the INSTIs resistance rate is low, the use of INSTIs in ART regimens should be considered.
9.Differences in cytokines expression between mild and severe infant cases infected with respiratory syncytial virus
Guangyu XUE ; Yuting HU ; Kexin ZONG ; Qin LUO ; Shengnan YANG ; Miao FENG ; Xiaoyu YI ; Zhiqiang XIA ; Chen GAO ; Haijun DU ; Ying LI ; Ying CHEN ; Feng HE ; Yajuan WANG ; Yingli QU ; Jin CAO ; Wenyan TIAN ; Qinqin SONG ; Hailan YAO ; Jun HAN
Chinese Journal of Experimental and Clinical Virology 2025;39(3):370-377
Objective:To analyze the clinical characteristics and cytokines expression characteristics in infants with mild and severe respiratory syncytial virus (RSV) infection.Methods:From May 2023 to December 2023, plasma samples and clinical information were collected from 16 infants with RSV infection and 14 control infants. Cytek Aurora flow cytometry (Cytek, America) and Enzyme linked immunosorbent assay (ELISA) were used to detect the expression levels of 25 cytokines after mild and severe RSV infection.Results:Cough and nasal obstruction were the main clinical manifestations in infants with mild RSV infection, accompanied by polypnea, wheezing and other symptoms. The main symptoms of severe RSV infection were cough and rales, accompanied by fever and polypnea. In comparison with the control group, the expression levels of IL-2, IL-4, IL-5, IL-6, IL-9, IL-13, IL-22, TNF-α, IFN-α, IFN-β, MIP-1β, I-TAC, ENA-78, GROα, Eotaxin, and MCP-1 in the RSV infection group all exhibited an upregulation trend. Both IP-10 and MIP-3α demonstrated a downward trend in the RSV infection group; however, there was no statistically significant difference ( P>0.05). The levels of IL-10, IFN-γ, MIP-1α, and IL-8 in the RSV infection group were significantly higher than those in the control group, whereas the levels of MIG, TARC, and RANTES in the RSV infection group were significantly lower than those in the control group ( P<0.05). The levels of IL-2, IL-4, IL-5, IL-6, IL-9, IL-10, IL-13, IL-22, IFN-β, IFN-γ, TNF-α, IL-8, I-TAC, MIP-1β, Eotaxin, and MCP-1 in the mild RSV infection group were significantly higher than those in the severe RSV infection group ( P>0.05). Among these, the levels of MIG, RANTES, TARC, MIP-3α, and ENA-78 in the mild infection group were all lower than those in the severe infection group. The expressions of ENA-78 and MIP-1α in the severe infection group were significantly higher than those in the mild infection group and also higher than those in the control group. There was no significant difference in IP-10 and GROα between the mild and severe RSV infection groups ( P>0.05). Conclusions:The differences in clinical features and cytokines between infants with mild and severe RSV infection provide important data support for the prevention and treatment of RSV infection in infants.
10.Fetal common arterial trunk:echocardiographic and genetic characteristics
Lin SUN ; Jiancheng HAN ; Ying ZHAO ; Xiaoyan HAO ; Hairui SUN ; Yanping RUAN ; Tong YI ; Xiaoyan GU ; Chao XUE ; Ye ZHANG ; Zhuo CHEN ; Yong GUO ; Zhongshan GOU ; Yuwei FU ; Yihua HE
Chinese Journal of Ultrasonography 2025;34(6):504-510
Objective:To analyze the echocardiographic and genetic characteristics of fetuses with common arterial trunk(CAT).Methods:A retrospective analysis was conducted on 77 480 fetal echocardiograms examined at the Maternal-Fetal Medicine center in Fetal Heart Disease of Beijing Anzhen Hospital from November 2010 to November 2024.Among them,106 fetuses were initially diagnosed with CAT,and 95 cases were ultimately confirmed(0.1%,95/77 480). The echocardiographic and genetic features of CAT fetuses were analyzed. According to the modified Van Praagh classification,CAT was divided into types A1-A4[with ventricular septal defect(VSD)]and B1-B4(without VSD)based on the origin of the pulmonary artery branches and the presence or absence of a VSD. Additionally,CAT was categorized into isolated and complex types based on the presence of associated intracardiac or extracardiac anomalies.Results:① Among the 95 confirmed CAT fetuses,type A accounted for 90.5%(86/95),and type B accounted for 9.5%(9/95). All 9 type B CAT fetuses exhibited no overriding of the arterial trunk , with 8 cases showing left ventricular hypoplasia accompanied by mitral atresia or absence.② Of the 95 CAT fetuses,14 were isolated(14.7%,14/95) , and 81 were complex(85.3%,81/95).The main associated intracardiac anomalies included:single ventricle(22 cases),complete atrioventricular septal defect(12 cases),anomalous pulmonary venous drainage(10 cases),right aortic arch with mirror-image branching(16 cases),and persistent left superior vena cava(14 cases). ③ Genetic testing was performed in 31 fetuses,with 18 showing positive results,primarily 22q11.21 deletion syndrome(29.0%,9/31). Conclusions:Apart from VSD,the most common intracardiac anomaly associated with CAT fetuses is single ventricle. Type B CAT without trunk overriding is often associated with left ventricular hypoplasia and mitral atresia or absence. The most frequent genetic abnormality in CAT fetuses is 22q11.21 deletion syndrome. Prenatal echocardiography should clarify the CAT subtype and associated anomalies,and genetic testing is strongly recommended for perinatal counseling and prognostic evaluation.


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