1.Assessment of muscle fatigue in school age children under different sitting postures
LUO Ling, HU Huimin, NIU Wenlei, HAO Anna
Chinese Journal of School Health 2025;46(4):558-562
Objective:
To investigate the effects of poor sitting postures on muscle fatigue in schoolage children, so as to provide evidence for developing healthy sitting guidelines.
Methods:
In May 2024,30 children aged 6-12 were recruited from Changping District in Beijing. A combination of surface electromyography (sEMG) and psychophysical scales were used to assess muscle fatigue at varying deviation angles under four sitting postures (forward head tilt, lateral head tilt, uneven shoulder height, and forward trunk inclination). Oneway ANOVA and LSD post hoc multiple comparisons were employed to analyze the differences in electromyographic (EMG) data among various deviation angles under different sitting postures.
Results:
The mean integrated electromyography (IEMG) of representative muscles showed statistically significant differences (P<0.05) across deviation angles in all postures, with muscle fatigue worsening as deviation angles increased. Forward head tilt:significant IEMG differences were observed in the left/right sternocleidomastoid and left/right splenius capitis (F=13.74, 13.21, 5.43, 6.11,P<0.05). Lateral head tilt:significant differences were found in the right sternocleidomastoid muscle (SCM), right splenius capitis, and left trapezius (F=5.13, 4.73, 12.13, P<0.05). Uneven shoulder height:significant differences occurred in the right SCM, bilateral splenius capitis, and left trapezius (F=12.46, 12.56, 32.49, 5.98, P<0.05).Forward trunk inclination, significant differences were identified in the left/right SCM, left/right splenius capitis, and left/right lumbar muscles (F=4.45, 9.84, 14.49, 26.44, 8.02, 18.34, P<0.01). Temporal analysis revealed varying fatigue onset times across postures:severe fatigue occurred earlier in lateral head tilt and forward trunk inclination, while excessive forward head tilt, lateral head tilt, and uneven shoulder postures predominantly induced mild to moderate fatigue.
Conclusions
Under different sitting postures, both the integrated IEMG of relevant muscles and subjective evaluations in schoolaged children increase with greater postural deviattion. Head tilt and trunkleaning postures require particular intervention, with emphasis on unevenshoulder alignment and trunk inclination control.
2.Adrenocortical carcinoma with rhabdoid features: a case report and literature review
Mingchuan CHU ; Huimin SUN ; Hao WANG ; Jian SONG ; Yongshun GUO
Journal of Modern Urology 2025;30(1):64-68
[Objective] To investigate and summarize the clinicopathological features, diagnosis, treatment and prognosis of adrenocortical carcinoma with rhabdoid features. [Methods] The clinical diagnosis and treatment of a case of adrenocortical carcinoma with rhabdoid features admitled to Department of Urology, Weifang People's Hospital were reported.The clinical manifestations, pathological features, diagnosis and prognosis of the disease were analyzed in combination with relevant literature. [Results] A 34-year-old male patient was admitted due to scrotal distension and pain that had persisted for 6 months.Imaging examination showed a huge soft tissue tumor in the left adrenal region of the retroperitoneum with compression displacement of the left kidney, leading to obstruction of venous return in the left spermatic vein, which in turn caused varicose veins.The levels of serum renin, angiotensin, aldosterone, cortisol, and catecholamine were within normal ranges.Surgical resection of the tumor was performed, and postoperative pathological examination revealed that the tumor tissue was predominantly composed of rhabdoid cells, exhibiting positive immunohistochemical staining for INI 1, Syn, Calretinin and Vimentin.Genetic testing did not identify any deletion of SMARCB1 and SMARCA4 mutations.Therefore, the diagnosis was adrenocortical carcinoma with rhabdoid features.At the current 20-month follow-up, no recurrence or metastasis was observed.A review of the literature found that only 7 cases of this disease had been reported. [Conclusion] Adrenocortical carcinoma with rhabdoid features is a rare disease, and a definitive diagnosis is dependent upon pathological examination.Surgical resection remains the primary treatment.Long-term follow-up is essential, and further research is needed to evaluate the impact of adjuvant therapy.
3.Cardiomyocyte-specific long noncoding RNA Trdn-as induces mitochondrial calcium overload by promoting the m6A modification of calsequestrin 2 in diabetic cardiomyopathy.
Xiaohan LI ; Ling LIU ; Han LOU ; Xinxin DONG ; Shengxin HAO ; Zeqi SUN ; Zijia DOU ; Huimin LI ; Wenjie ZHAO ; Xiuxiu SUN ; Xin LIU ; Yong ZHANG ; Baofeng YANG
Frontiers of Medicine 2025;19(2):329-346
Diabetic cardiomyopathy (DCM) is a medical condition characterized by cardiac remodeling and dysfunction in individuals with diabetes mellitus. Sarcoplasmic reticulum (SR) and mitochondrial Ca2+ overload in cardiomyocytes have been recognized as biological hallmarks in DCM; however, the specific factors underlying these abnormalities remain largely unknown. In this study, we aimed to investigate the role of a cardiac-specific long noncoding RNA, D830005E20Rik (Trdn-as), in DCM. Our results revealed the remarkably upregulation of Trdn-as in the hearts of the DCM mice and cardiomyocytes treated with high glucose (HG). Knocking down Trdn-as in cardiac tissues significantly improved cardiac dysfunction and remodeling in the DCM mice. Conversely, Trdn-as overexpression resulted in cardiac damage resembling that observed in the DCM mice. At the cellular level, Trdn-as induced Ca2+ overload in the SR and mitochondria, leading to mitochondrial dysfunction. RNA-seq and bioinformatics analyses identified calsequestrin 2 (Casq2), a primary calcium-binding protein in the junctional SR, as a potential target of Trdn-as. Further investigations revealed that Trdn-as facilitated the recruitment of METTL14 to the Casq2 mRNA, thereby enhancing the m6A modification of Casq2. This modification increased the stability of Casq2 mRNA and subsequently led to increased protein expression. When Casq2 was knocked down, the promoting effects of Trdn-as on Ca2+ overload and mitochondrial damage were mitigated. These findings provide valuable insights into the pathogenesis of DCM and suggest Trdn-as as a potential therapeutic target for this condition.
Animals
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Diabetic Cardiomyopathies/pathology*
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RNA, Long Noncoding/genetics*
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Myocytes, Cardiac/metabolism*
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Mice
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Calsequestrin/genetics*
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Calcium/metabolism*
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Male
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Sarcoplasmic Reticulum/metabolism*
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Methyltransferases/metabolism*
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Mice, Inbred C57BL
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Mitochondria, Heart/metabolism*
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Disease Models, Animal
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Mitochondria/metabolism*
4.Identification, characterization, substrate binding mode prediction, and modification of a novel amidohydrolase from Microbulbifer thermotolerans.
Nana XU ; Mingzhu YAN ; Hao WANG ; Xiao LIANG ; Weidong LIU ; Huimin QIN ; Jian GAO
Chinese Journal of Biotechnology 2025;41(9):3567-3578
Ochratoxin A (OTA) is ubiquitous in the food and feed fields. It has strong hepatotoxicity and nephrotoxicity, seriously threatening the health of humans and animals. Enzymatic degradation of mycotoxins is considered to be a promising method to control mycotoxin contaminations. In this study, a new ochratoxin A amidohydrolase from Microbulbifer thermotolerans (MiADH) was obtained. After heterologous expression in Escherichia coli and purification, the recombinant protein was studied regarding the hydrolysis activity, hydrolysis products, enzymatic properties, and substrate binding mode. MiADH can degrade OTA into ochratoxin α (OTα) and phenylalanine, demonstrating a detoxifying ability. It demonstrated the best performance at 70 ℃ and pH 8.0, and Cu2+ had the strongest inhibitory effect on the activity of MiADH. MiADH with good thermal stability exhibited huge potential for industrial application. Rational design guided by three-dimensional structural models and substrate docking analysis revealed the important amino acids affecting substrate binding and obtained multiple mutants with improved activity. Among these mutants, V324A had the highest activity, which was 4.2-fold that of the wild type. The identification of MiADH enriches the ochratoxin A degradation enzyme library and provides a new candidate enzyme for the biological detoxification of ochratoxin A in the food and feed industry.
Amidohydrolases/chemistry*
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Ochratoxins/metabolism*
;
Substrate Specificity
;
Escherichia coli/metabolism*
;
Recombinant Proteins/metabolism*
;
Actinomycetales/genetics*
5.Tongmai Kaiqiao Pills Treat Vascular Dementia in Rats by Regulating Mitochondrial Autophagy via HIF-1α/BNIP3 Signaling Pathway
Huimin DING ; Yanjie LI ; Hewei QIN ; Chenyuan HAO ; Nannan ZHAO ; Zhenhua XU ; Mengyan SUN
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(21):52-60
ObjectiveTo observe the effects of Tongmai Kaiqiao pills on the hypoxia-inducible factor-1α (HIF-1α)/adenovirus E1B 19 kD-interacting protein 3 (BNIP3) signaling pathway and mitochondrial autophagy in the hippocampus of the rat model of vascular dementia (VD). MethodNinety male SD rats underwent adaptive feeding for one week before the study. Ten rats were randomly assigned to the sham group, where the common carotid artery was isolated without ligation. The remaining rats were subjected to sequential ligation of the common carotid artery for the modeling of VD. The successfully modeled rats were randomly assigned into the following groups: model, high-, medium-, and low-dose (27.6, 13.8, 6.9 g·kg-1, respectively) Tongmai Kaiqiao pills, donepezil hydrochloride (0.45 mg·kg-1), and combination (27.6 g·kg-1 Tongmai Kaiqiao pills + 2.5 mg·kg-1 HIF-1α inhibitor YC-1) groups. After 4 weeks of treatment, samples were collected. Nissl staining and hematoxylin-eosin staining were performed to observe the loss of neurons and pathological changes, respectively, in the hippocampal region. Western blot was employed to determine the protein levels of HIF-1α, BNIP3, Beclin-1, and microtubule-associated protein 1 light chain 3B (LC3B) in the hippocampal tissue. Transmission electron microscopy was used to observe the mitochondrial ultrastructure and the number of autophagosomes in the hippocampal tissue. Immunofluorescence was employed to observe the fluorescence intensity of HIF-1α, BNIP3, and LC3B in the hippocampal tissue. ResultCompared with the sham group, the model group showed prolonged escape latency (P<0.01), decreased number of platform crossings (P<0.01), reduced and disarranged neuronal layers in the hippocampal region, decreased number of Nissl bodies, disrupted mitochondrial cristae, damaged mitochondrial double-membrane structures, increased number of autophagosomes, upregulated expression of HIF-1α, BNIP3, beclin1, and LC3B (P<0.05, P<0.01), and enhanced fluorescence intensity of HIF-1α, BNIP3, and LC3B (P<0.05, P<0.01). Compared with the model group, Tongmai Kaiqiao pills and donepezil hydrochloride shortened the searching time for the platform (P<0.01) and increased the number of platform crossings (P<0.01). Moreover, the drugs increased the number of neurons with normal morphology and orderly arrangement and the number of Nissl bodies, alleviated the damage, increased the number of autophagosomes, upregulated the expression of HIF-1α, BNIP3, Beclin1, and LC3B (P<0.05, P<0.01), and enhanced the fluorescence intensity of HIF-1α, BNIP3, and LC3B (P<0.05, P<0.01). Compared with high-dose Tongmai Kaiqiao pills, the combination group prolonged the escape latency (P<0.01), reduced the number of crossing platforms (P<0.01), decreased the number of hippocampal neurons, aggravated the damage, decreased the number of Nissl bodies and autophagosomes, downregulated the expression of HIF-1α, BNIP3, beclin1, and LC3B (P<0.01), and decreased the fluorescence intensity of HIF-1α, BNIP3, and LC3B (P<0.01). ConclusionTongmai Kaiqiao pills may activate the HIF-1α/BNIP3 signaling pathway to promote the occurrence of mitochondrial autophagy, clear damaged mitochondria, provide energy for healthy cells, reduce neuronal cell death, and restore the brain function, thereby reducing ischemic damage to the hippocampal tissue, improving learning and memory abilities, and exerting therapeutic effects on VD in rats.
6.The Correlation between Traditional Chinese Medicine Constitution and the Progression of Abnormal Glucose Metabolism in Community Population: A Case-control Study
Hui HUANG ; Huimin ZHAO ; Jiahui XU ; Qingguang CHEN ; Hao LU
Journal of Traditional Chinese Medicine 2024;65(9):928-933
ObjectiveTo investigate the role of traditional Chinese medicine (TCM) constitution in the progression of abnormal glucose metabolism among community population. MethodsA total of 393 community residents who participated in community diabetes screening from 2019 to 2021 and had complete physical examination data at baseline and at the 2nd year follow-up were selected. According to the results of glucose tolerance tests, community residents were divided into the abnormal glucose metabolism progression group and non-progression group, and were matched at the ratio of 1∶2 using the propensity score matching. The influencing factors related to diabetes at baseline were collected for both groups. The traditional Chinese medicine constitution was determined among population in two groups. The differences of influencing factors and traditional Chinese medicine constitution between the two groups were compared. Logistic regression analysis was used to analyze the risk factors for the progression of abnormal glucose metabolism. ResultsFinally, 131 patients were included in the progression group and 262 patients in the non-progression group. Compared to the non-progression group, the progression group had significantly higher proportion of hyperlipidemia history , hyperglycemia history, phlegm-dampness constitution, and blood stasis constitution (P<0.05 or P<0.01). Univariate logistic regression analysis revealed that the history of hyperlipidemia (P=0.011), history of hyperglycemia (P<0.001), the family history of diabetes (P<0.001), yin-deficiency constitution (P=0.047), phlegm-dampness constitution (P=0.011) and blood-stasis constitution (P=0.008) were risk factors for the progression of abnormal glucose metabolism. Multivariate logistic regression analysis indicated that the history of hyperglycemia (P<0.001), yin-deficiency constitution (P=0.026) and blood-stasis constitution (P=0.032) were independent risk factors for the progression of abnormal glucose metabolism. ConclusionThe history of hyperglycemia, yin-deficiency constitution and blood-stasis constitution may be the risk factors for the progression of abnormal glucose metabolism.
7.Clinical application of endoscopic resection using snares in treatment of gastric submucosal tumors
Manman LU ; Zhenjuan LI ; Shanshan XU ; Huimin ZHANG ; Xueyan WANG ; Jiaxin LI ; Runzhao QUAN ; Hao ZHANG ; Hui DING ; Xiuling LI
China Journal of Endoscopy 2024;30(11):39-46
Objective To investigate the clinical efficacy and safety of endoscopic resection using snares for the treatment of gastric submucosal tumors(SMTs).Methods 66 patients diagnosed with gastric SMTs and treated with endoscopic resection from August 2017 to August 2023 were retrospectively analyzed and divided into the snare group(endoscopic resection using snares,n=33)and the traditional resection group(endoscopic resection using a traditional disposable incision knife,n=33).The operation time,overall resection rate,incidence of adverse reactions,operation cost,hospitalisation cost,and the post-operative hospital days were compared between the two groups.Results The lesion diameter was 8.00(6.00,14.00)mm in the snare group and 8.00(7.50,10.00)mm in the traditional resection group,the difference between the two groups was not statistically significant(P>0.05);The operative time in the snare group was significantly shorter than that in the traditional resection group[26.00(19.00,30.50)min vs 33.00(22.50,49.50)min],the difference was statistically significant(P<0.05);The overall resection rate in both groups was 100.0%;Neither group of patients had intraoperative perforation.There were no statistically significant differences in the incidence of adverse reactions such as intraoperative bleeding,abdominal pain and fever between the two group(P>0.05);The operative cost of the snare group was significantly lower than the traditional endoscopic resection group[(8 642.18±1 078.56)yuan vs(13 266.45±2 160.80)yuan],the difference was statistically significant(P<0.05).Conclusion Compared with traditional surgical instruments,endoscopic resection of gastric SMTs using snares has a shorter operating time,lower surgical costs,safe and effective,making it worthy of promotion.
8.Application value of neck circumference in screening for overweight and obesity among children and adolescents
LIU Fang, YUAN Shuxian, LI Yuan, HAO Huimin, LIN Yifan, CHEN Yongxing, WEI Haiyan
Chinese Journal of School Health 2024;45(7):1040-1044
Objective:
To discuss the clinical value of neck circumference in screening for overweight and obesity in children and adolescents, so as to provide a theoretical basis and new ideas for overweight and obesity screening.
Methods:
From May to July 2023, a total of 2 493 children and adolescents aged 3 to 16 were sampled from three schools by the cluster random sampling method. General data, neck circumference, body mass index (BMI), waisttoheight ratio, and other information were collected. Mann-Whitney ranksum test, Spearman correlation analysis, and receiver operating characteristic (ROC) curve analysis were used to statistically analyze the data.
Results:
The prevalence of overweight and obesity in children and adolescents aged 3 to 16 was 33.05%, and the prevalence of abdominal obesity was 28.33%.The neck circumferences of boys and girls in the overweight and obese group showed statistically significant differences from the normal weight group during the preschool, schoolage, and adolescence periods (Z=-16.69--4.54, P<0.05). The neck circumferences of children of different genders were moderately positively correlated with BMI (r=0.50-0.79, P<0.01). ROC curve analysis showed that neck circumference had good accuracy in assisting the screening for the occurrence of overweight and obesity in boys and girls during the preschool, schoolage, and adolescence periods [the AUC for boys:0.80(0.71-0.89), 0.89(0.86-0.91), 0.84(0.81-0.87); the AUC for girls:0.76(0.67-0.86), 0.81(0.74-0.88), 0.73(0.68-0.77), P<0.01], the optimal neck circumference cutoff values for boys were 26.95, 28.95, 33.55 cm, and for girls were 25.05, 26.55, 28.35 cm respectively. The neck circumferences of boys and girls were moderately positively correlated with the waisttoheight ratio during the schoolage and adolescence periods (r=0.41-0.70, P<0.01). ROC curves showed that neck circumferences had good accuracy in assisting the screening for the occurrence of abdominal obesity in boys and girls during the schoolage and adolescence periods [the AUC for boys:0.89(0.86-0.92), 0.82(0.78-0.85); the AUC for girls:0.84(0.75-0.93), 0.87(0.75-0.93)], the optimal cutoff values for boys were 28.95, 32.75 cm; for girls were 26.45, 31.85 cm respectively.
Conclusion
The neck circumference can be applied to screen for overweight and abdominal obesity in children and adolescents, and can provide new ideas for the prevention and control of overweight and obesity in children and adolescents.
9.Early warning value of blood urea nitrogen to albumin ratio combined with soluble growth stimulation expressed gene 2 on sepsis-induced myocardial injury in elderly patients in emergency intensive care unit
Yongyan HAN ; Junli YANG ; Huimin MENG ; Hao YAO ; Pu WANG ; Qingmian XIAO ; Weizhan WANG
Chinese Journal of Geriatrics 2024;43(6):727-732
Objective:To examine the potential of combining the blood urea nitrogen(BUN)/albumin(ALB)ratio(BAR)with soluble growth stimulation expressed gene 2(sST2)as an early warning indicator for myocardial injury in elderly patients with sepsis in the emergency intensive care unit(EICU).Methods:The clinical data of elderly patients with sepsis admitted to the EICU of the Emergency Medicine Department at Harrison International Peace Hospital of Hebei Medical University from August 2018 to August 2022 were prospectively analyzed.The patients were divided into two groups based on the presence or absence of myocardial injury: the myocardial injury group and the non-myocardial injury group.The general clinical data and laboratory indexes of the two groups were compared, and the BAR was calculated.The correlation between BAR and myocardial injury in elderly patients with sepsis was analyzed.Binary Logistic regression analysis was used to identify the risk factors for myocardial injury in elderly patients with sepsis in the EICU.MedCalc software was employed to determine the early warning value of the combined sST2 and BAR for myocardial injury in elderly patients with sepsis in the EICU.Results:A total of 165 cases were analyzed, with 106 cases(64.24%)showing myocardial injury.It was found that elderly sepsis patients with lung and abdominal infection were more likely to experience myocardial injury( P<0.05 for all).In comparison to the group without myocardial injury, the levels of inflammatory markers such as white blood cell count(WBC), neutrophil to lymphocyte ratio(NLR), lactic acid, and procalcitonin(PCT), as well as combined markers BAR and sST2, were higher in elderly sepsis patients with myocardial injury upon admission.Correlation analysis results revealed significant positive correlations between BAR and lactic acid, PCT, and C-reactive protein(CRP)within 24 hours of admission to EICU in elderly sepsis patients with myocardial injury.Among these correlations, the strongest was observed between BAR and PCT( r=0.417, P<0.001).Additionally, BAR exhibited a positive correlation with acute physiology and chronic health evaluation scoring system(APACHEⅡ)scores( r=0.241, P=0.002).Furthermore, BAR showed positive correlations with myocardial injury markers sST2 and cTnI( r=0.327, 0.307, P<0.05 for all).Logistic regression analysis revealed that septic shock( OR=2.406, P=0.008), decreased left ventricular ejection fraction(EF)( OR=0.939, P=0.015), BAR( OR=2.205, P=0.044), lactic acid( OR=1.137, P=0.014), and sST2 elevation( OR=1.016, P=0.020)were identified as independent risk factors for predicting myocardial injury in elderly patients with sepsis.The results of ROC analysis indicated that BAR had a high early warning value for the occurrence of myocardial injury in elderly patients with EICU sepsis[area under curve(AUC)0.651, P<0.05], with an optimal cut-off value of 0.32(sensitivity 77.4%, specificity 60.2%).Furthermore, the combined detection of BAR and sST2 demonstrated a higher early warning value for the occurrence of myocardial injury in elderly patients with sepsis(AUC 0.697, P<0.05).The mortality rate of patients with myocardial injury below a cut-off value of 0.32 was 36.00%(9/25), while the mortality rate of patients with myocardial injury equal to or above 0.32 was 66.67%(54/81).The difference between the two groups was statistically significant( χ2=8.624, P=0.003). Conclusions:Both BAR and sST2 are considered independent risk factors for myocardial injury in elderly patients with sepsis.The combined detection of BAR and sST2 provides a more accurate prediction for the occurrence of myocardial injury in these patients.
10.Clinicopathological features and surgical methods of solitary papillary thyroid isthmus carcinoma
Jinxin ZHU ; Jia LIU ; Deqian WU ; Huimin QU ; Junli HAO
Chinese Journal of Endocrine Surgery 2024;18(5):685-690
Objective:To analyze the clinicopathological features of solitary papillary thyroid isthmus carcinoma (SPTIC) and the therapeutic effect and prognosis of different surgical methods.Methods:A total of 161 patients with SPTIC who underwent surgical treatment in the Department of Thyroid Surgery of the First Hospital of Jilin University from Dec. 2012 to Oct. 2021 were selected. Gender, age, body mass index and pathology of the patients were collected and the clinicopathological characteristics of SPTIC were analyzed. They were divided into three groups according to different surgical methods: group A underwent isthmic excision, group B underwent extended isthmic excision, and group C underwent total thyroidectomy. There were 47 patients in group A (8 males and 39 females with an average age of 42.6±9.1 years), 50 patients in group B (11 males and 39 females with an average age of 45.3±11.3 years), and 64 patients in group C (10 males and 54 females with an average age of 46.9±11.4 years). The clinicopathological features and therapeutic effect of the three groups were compared by ANOVA, multiple local rank sum test, χ2 test or Fisher's exact probability method, and the recurrence rate and recurrence free survival (RFS) of the three groups were compared after a follow-up of 6 to 126 months. Results:Among the 161 patients with SPTIC, 132 (82.0%) were female, 130 (80.7%) were younger than 55 years old, BMI (25.1±3.6) kg/m 2, 124 (77.0%) were combined with capsule invasion. There were 53 cases (32.9%) with central lymph node metastasis (CLNM). Subgroup analysis showed that the proportion of males in patients with tumor diameter > 1 cm, the proportion of patients with BMI≥26.0 kg/m 2, the rate of capsular invasion, the rate of extrandular invasion and the rate of CLNM were higher (30.0% vs. 14.0%, P=0.023; 60.0% vs. 33.9%, P=0.004; 97.5% vs. 70.2%, P< 0.001; 42.5% vs. 9.9%, P<0.001; 50.0% vs. 27.3%, P=0.008) ; The CLNM rate was higher in male patients with BMI≥26.0 kg/m 2 and tumor diameter > 1 cm (28.3% vs. 13.0%, P=0.017; 52.8% vs. 34.3%, P=0.024; 37.7% vs. 18.5%, P=0.008). Compared with groups A and B, group C had longer hospitalization days, higher hospitalization costs, longer operation time, more postoperative drainage flow and higher incidence of postoperative hypoparathyroidism, and the differences were statistically significant (all P< 0.05). Groups A and B were similar in all aspects, with no statistical significance ( P> 0.05 for all). During the follow-up, 3 patients in both group A and B relapsed, while no patients in group C relapsed, and there were no statistically significant differences in the recurrence rate ( P=0.059) or RFS ( P=0.082) among the three groups. Conclusions:The majority of SPTIC were microcarcinomas, but the incidence of tumor combined with capsule invasion was higher, and the tumor size of more than 1 cm was more invasive (capsule invasion rate and extrathyroid invasion rate were higher). SPTIC should be treated as conservatively as possible (isthmic excision or enlarged isthmic excision) .


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