1.Clinical analysis of 314 children with chest pain
Yan ZHOU ; Sirui YANG ; Jinghui SUN ; Yongkang WEI ; Xiaoming LI
Chinese Journal of General Practitioners 2008;7(8):531-534
Objective To understand the cause of chest pain (precordium indisposition) in children and explore the thread of thought in its analysis.Methods Clinical data of 314 children with chest pain who visited the cardiovascular department for children of our hospital were collected and analyzed to study its causes.Results The cause could be attributed to organic cardiac diseases in 43 of 314 children (13.7%) with chest pain,to non-organic cardiac diseases in 108 (34.4%),to psychiatric-psychological factors in 60 (19.1%) and to unknown cause in 41 (13.1%).Average age of children with organic cardiac diseases was younger than that of children with other causes (P<0.05).Symptoms accompanied simultaneously in children with organic cardiac diseases were much more frequent significantly than those in them with non-organic cardiac chest pain and unknown causes (P<0.05).Conclusions Chest pain in children could be caused by a few causes,which was non-specific symptom for organic cardiac diseases,so, more should be taken into account in analyzing the cause of chest pain in children.
2.Effects of 5-HT1A receptor in hippocampal dentate gyrus on anxiety-related behavior of adult rats with Parkinson's disease
Ye LIU ; Yifan JIANG ; Xin LIU ; Sirui JIAO ; Wei HU ; Wei PENG ; Wen XIE ; Jun WANG ; Li ZHANG
Journal of Xi'an Jiaotong University(Medical Sciences) 2017;38(3):402-409
Objective To study the effects of 5-HT1A receptor in hippocampal dentate gyrus on anxiety behavior of adult rats with Parkinson's disease (PD).Methods PD model in rats was constructed by using 6-hydroxydopamine (6-OHDA) to lesion the medial forebrain bundle (MFB).In lesioned rats and sham-operated rats,we examined the changes of the number of TFH-positive neurons in the SNc and VTA.We also examined how 5-HT1A receptor of hippocampal dentate gyrus (DG) modulates the anxiety-related behavior using open field test and elevated plus-maze test,and examined monoamine neurotransmitter changes in the striatum,medial prefrontal cortex (mPFC),amygdale and ventral hippocampus using reverse-phase high performance liquid chromatography with electrochemical detection.Results In 6-OHDA-lesioned rats,the SNc of the injected side showed a total loss of TH-ir neurons compared with the unlesioned side,and the number of TH-ir neurons in the VTA on the lesioned side decreased significantly to (34± 2)%.The locomotor activity in 6-OHDA-lesioned rats decreased compared with that in sham-operated rats.Unilaterally lesioning the MFB decreased the percentage of time spent in the center in the open-field test and percentages of open arm entries and open arm time of elevated plus maze test when compared with sham-operated rats.In the sham-operated rats,intra-DG injection of 8-OH-DPAT did not affect anxiety-like behavior.In 6-OHDA-lesioned rats,intra-DG injection of 8-OH-DPAT significantly increased the percentage of time spent in the center at a dose of 100 ng and 500 ng when compared with saline injection into the DG.Injection of WAY-100635 did not affect rats in the two groups.Unilateral 6-OHDA lesions of the MFB in rats significantly decreased DA levels in the ipsilateral striatum,mPFC,amygdale and ventral hippocampus compared with those in sham-operated rats,but had no effect on 5-HT or NA levels in those structures.Conclusion Unilateral 6-OHDA lesion of the MFB not only totally damaged DA neurons in SNc and partly damaged DA neurons in VTA,but also decreased DA level in the ipsilateral striatum,mPFC,amygdale and ventral hippocampus.Unilateral 6-OHDA lesion of the MFB induces anxiety-related behavior,and activation of 5-HT1A receptor in the hippocampal dentate gyrus has anxiolytic effect in the rat model of Parkinson's disease.
3.Safety and long-term efficacy of endoscopic resection of large gastric stromal tumors: a multicenter retrospective study
Yuting JIANG ; Sirui JIANG ; Fengqin FU ; Wei LIANG ; Liping HE ; Rujie PENG ; Xiaoling ZHENG
Chinese Journal of Digestive Endoscopy 2021;38(7):527-534
Objective:To evaluate the safety and long-term efficacy of endoscopic resection of gastric stromal tumors with a diameter of >2-4 cm.Methods:The clinical data of 307 patients, who underwent endoscopic or surgical resection and pathologically confirmed to be gastric stromal tumors with a diameter ≤4 cm in Fujian Provincial Hospital, Jinshan Branch of Fujian Provincial Hospital or Fujian Geriatric Hospital from January 2014 to December 2019, were collected. The propensity score matching (1∶1) was performed for the cases with the tumor size of >2-4 cm.Then the incidence of adverse events related to the operation and clinical outcomes were compared between 41 patients in the endoscopic group and 41 patients in the surgical group.Results:Compared with the surgical group, the median operation time in the endoscopic group was significantly shorter (58.0 min VS 108.0 min, Z=-4.789, P<0.001), and the median hospitalization cost was significantly lower (22.7 thousand yuan VS 42.0 thousand yuan, Z=-7.164, P<0.001). There were no significant differences in postoperative fasting time or postoperative hospitalization time between the two groups ( P>0.05). Complications occurred in 7 cases (17.1%) in the endoscopy group, including 5 cases of postoperative acute infection, 1 case of postoperative perforation, and 1 case of postoperative bleeding; all 9 cases (22.0%) in the surgical group developed postoperative acute infection. There was no significant difference in the overall incidence of complications between the two groups ( χ2=0.311, P=0.577). Tumors in both groups were completely removed with negative resection margins. The follow-up time of the endoscopy group was 34.3±15.6 months, and that of the surgical group was 42.2±20.2 months. No recurrence or distant metastasis was observed during the follow-up period in the two groups. Conclusion:Endoscopic resection of large gastric stromal tumor (range>2-4 cm) is safe and effective in the long term, which can be used as one of the methods for gastrointestinal stromal tumors.
4.Evaluation of eCura scoring system for treatment strategy selection after non-curative endoscopic resection of early gastric cancer
Fengqin FU ; Xiaolu LIN ; Hui CHENG ; Wei LIANG ; Wanyin DENG ; Shishun ZHONG ; Jinhui ZHENG ; Sirui JIANG ; Yuting JIANG ; Xiaoling ZHENG
Chinese Journal of Digestive Endoscopy 2022;39(1):53-59
Objective:To evaluate the adjuvant role of the eCura scoring system in selecting appropriate treatment strategies after non-curative endoscopic submucosal dissection (ESD) of early gastric cancer (EGC) patients.Methods:The clinicopathological data of 110 EGC patients who underwent non-curative ESD at Fujian Provincial Hospital from January 2015 to June 2019 were retrospectively analyzed. According to the eCura score, patients were divided into three lymph node metastasis (LNM) risk groups: low-risk group (79 cases), middle-risk group (22 cases), and high-risk group (9 cases). The receiver operator characteristic (ROC) curve analysis was used to test the diagnostic efficacy of eCura scoring system in predicting LNM. Logistic regression analysis was used to explore the influence of risk stratification of eCura scoring system on LNM. Kaplan-Meier method was used to evaluate cancer survival rate, which was then compared with log-rank test.Results:Thirty-five patients underwent additional standard surgery after ESD, including 22 in the low-risk group, 8 in the middle-risk group, and 5 in the high-risk group. Among them, 5 cases had LNM, including 1 case in the low-risk group and the middle-risk group respectively and 3 cases in the high-risk group. The area under the ROC curve was 0.857 (95% CI: 0.697-0.952, P=0.001), and when the cut-off value of the eCura score was set at 3, the Yuden index reached the maximum value of 0.7, with the corresponding sensitivity and specificity of 80% and 90%, respectively. Logistic regression analysis showed that the probability of LNM in the middle-risk group was about 3.00 times (95% CI: 0.17-54.57, P=0.458) as high as that in the low-risk group, and the probability of LNM in the high-risk group was about 31.50 times (95% CI: 2.14-463.14, P=0.012) of that in the low-risk group. The follow-up time was 12 to 58 months, and the median follow-up time was 40 months. There were 10 cases of recurrence, including 4 cases in the low-risk group, 3 cases in the middle-risk group and 3 cases in the high-risk group, of which 2 cases in the low-risk group were from those of additional standard surgery after ESD, and the remaining 8 cases were from those who did not receive additional standard surgery after ESD. Kaplan-Meier survival curve analysis showed that the survival rate of patients with additional surgery in the low-risk group was similar to that of patients without ( P=0.319), and the survival rate of patients with additional surgery in the middle-risk group was also similar to that of patients without ( P=0.296). The survival rate of patients with additional surgery in the high-risk group was significantly higher than that of those without ( P=0.013). Conclusion:The eCura scoring system can assist the selection of treatment strategies after non-curative resection of EGC, and can accurately predict the risk of subsequent LNM and recurrence. Close follow-up may be an acceptable option for patients with low risk of LNM, and additional standard surgical treatment may be more conducive to improving the prognosis in patients with high risk of LNM.
5.Ultrasound diagnosis of pelvic lipomatosis and misdiagnosis analysis
Tianhong TANG ; Na SU ; Wei SUN ; Sirui LIU ; Ming WANG ; Zhenhong QI ; Jianchu LI ; Meng YANG ; Yuxin JIANG
Chinese Journal of Ultrasonography 2020;29(4):359-363
Objective:To discuss the value of ultrasound in the diagnosis of pelvic lipomatosis and analyze the causes of misdiagnosis.Methods:A retrospective analysis of 68 cases of pelvic lipomatosis confirmed by operation or imaging in Peking Union Medical College Hospital from January 2000 to December 2018 was made to summarize the characteristics of ultrasonic manifestations.Results:Ultrasonographic findings were as follows: 6 cases (8.8%) had increased fat-like hyperecho in pelvic cavity; 60 cases (88.2%) had abnormal bladder; 42 cases (61.7%) had pyelectasis and 24 cases (35.3%) had ureterectasis. Of the 68 cases, 6 cases (8.8%) were correctly diagnosed; 54 cases (79.4%) were missed; 8 cases (11.8%) were misdiagnosed, including 7 cases (10.3%) of bladder tumor and 1 case (1.5%) of retroperitoneal giant mass.Conclusions:Pelvic lipomatosis has characteristic sonographic features.When urinary tract obstruction and bladder wall thickening are observed, pelvic lipomatosis should be considered. Bladder shape and existence of increasing fat-like hyperecho in the pelvis should be further scanned to reduce the misdiagnosis rate of pelvic lipomatosis.
6.Clinical characteristics of severe acute respiratory syndrome coronavirus 2 vaccine breakthrough infections in children
Fu WEI ; Jian WANG ; Xiaofeng LI ; Xinyuan HE ; Yishan LIU ; Xiaoqin HU ; Huan DENG ; Ying WANG ; Ning GAO ; Hong DU ; Sirui MA ; Fanpu JI
Chinese Journal of Infectious Diseases 2023;41(1):58-63
Objective:To analyze the clinical characteristics of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccine breakthrough infections in children, and to provide reference basis for the SARS-CoV-2 vaccination in children.Methods:A total of 97 children aged 3 to 14 years and diagnosed with coronavirus disease 2019 (COVID-19) admitted to Xi′an People′s Hospital (Xi′an Fourth Hospital) from December 27, 2021 to February 7, 2022 were included. According to the COVID-19 vaccination status, the enrolled children were divided into unvaccinated group, partially vaccinated group and fully vaccinated group, and the clinical data of the children in the three groups were collected and compared. Chi-square test, two independent sample t-test and Kruskal-Wallis H test were used for statistical analysis. Results:Totally 97 children including 49 males and 48 females were enrolled, with 87(89.7%) children of mild type, 10(10.3%) children of common type, and no severe or critical case. The proportions of unvaccinated, partially vaccinated and fully vaccinated preschool-aged children (3 to 6 years old) were 56.5%(13/23), 30.8%(12/39) and 17.1%(6/35), respectively, while those of school-aged children (7 to 14 years old) were 43.5%(10/23), 69.2%(27/39) and 82.9%(29/35), respectively. The vaccination proportion in preschool-aged children was significantly lower than that in school-age children ( χ2=9.94, P=0.007). The proportion of the children with fever in fully vaccinated group was 17.1%(6/35), which was lower than that in unvaccinated group (43.5%, 10/23), and the difference was statistically significant ( χ2=4.82, P=0.028). The cycle threshold (Ct) values of the open reading frame ( ORF)1 ab gene in the unvaccinated, partially vaccinated and fully vaccinated groups were 33.77(26.87, 36.58), 35.23 (33.45, 38.57) and 37.12 (34.91, 39.39), respectively, and there was a statistically significant difference among the groups ( H=7.76, P=0.021). The Ct values of the nucleocapsid protein ( N) gene in the three groups were 32.26(25.85, 36.18), 35.12(33.18, 37.96) and 37.26(34.27, 39.24), respectively, and the difference among the groups was statistically significant ( H=7.84, P=0.020). The Ct values of ORF1 ab gene and N gene in fully vaccinated group were higher than those in unvaccinated group, and the differences were statistically significant ( Z=-2.69, P=0.007 and Z=-2.39, P=0.017, respectively). The duration of viral shedding in fully vaccinated children was (9.9±4.1) d, which was shorter than that in unvaccinated children ((12.8±3.7) d), and the difference was statistically significant ( t=2.72, P=0.009). Conclusions:The majority of children with breakthrough infections with SARS-CoV-2 are mild. Vaccination may effectively shorten the duration of viral shedding. And fully vaccination is associated with mild clinical symptoms and lower serum viral load compared to unvaccinated children.
7.Predictive value of inflammatory and nutritional indices for postoperative survival of elderly patients with esophageal squamous carcinoma
Yuxia ZHANG ; Qin XIE ; Sirui WEI ; Longlin JIANG ; Li XIE ; Yongtao HAN ; Yan MIAO
Chinese Journal of Digestive Surgery 2024;23(9):1200-1208
Objective:To investigate the predictive value of inflammatory and nutritional indices for postoperative survival of elderly patients with esophageal squamous carcinoma.Methods:The retrospective cohort study was conducted. The clinicopathological data of 130 elderly patients with esophageal squamous carcinoma who were admitted to Sichuan Cancer Hospital from January 2019 to April 2020 were collected. There were 102 males and 28 females, aged (70±4)years. Mea-surement data with normal distribution were represented as Mean± SD. Measurement data with skewed distribution were represented as M( Q1, Q3) or M(range). Count data were expressed as absolute numbers, and comparison between groups was conducted using the chi-square test. Receiver opera-ting characteristic (ROC) curves were plotted. The area under the curve (AUC) and optimal cut-off values were calculated. The Kaplan-Meier method was used to plot survival curves, and the Log-rank test was used for survival analysis. The COX proportional hazard regression model was used for univariate and multivariate analyses. Results:(1) Postoperative survival of elderly patients with esophageal squamous carcinoma predicted by inflammatory and multitional indices. Results of ROC curves analysis showed that the best cut-off values of preoperative systemic immune-inflammation index (SII), systemic inflammation response index (SIRI), neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), and prognostic nutrition index (PNI) for predicting postoperative survival of elderly patients with esophageal squamous carcinoma were 470.71×10 9/L, 1.11, 2.07, 136.24, and 46.28, respectively. (2) Risk factors analysis of postoperative survival of elderly patients with esophageal squamous carcinoma. Results of multivariate analysis showed that preoperative SII ≥470.71×10 9/L, preoperative SIRI ≥1.11, preoperative PNI<46.28, score of preoperative patient-generated subjective global assessment (PG-SGA) ≥4, postoperative pathological stage Ⅳ and post-operative complications were independent risk factors for the overall survival time of elderly patients with esophageal squamous carcinoma ( hazard ratio=3.30, 2.50, 0.36, 4.86, 1.57, 1.97, 95% confidence interval as 1.10?9.88, 1.07?5.88, 0.16?0.81, 1.13?20.87, 1.20?2.06, 1.02?3.82, P<0.05). (3) Follow-up. All the 130 patients were followed up for 39(range, 1?60)months. Of the 130 patients, 81 cases survived, 49 cases died, and the median overall survival time was not reached. The 1- and 3-year survival rates of the 130 patients were 83.85% and 54.62%, respectively. ① The median overall survival time was 25(0,43)months for patients with SII ≥470.71×10 9/L, and unreached for patients with SII <470.71×10 9/L, showing a significant difference between them ( χ2=60.59, P<0.05). ② The median overall survival time was 26(0,44)months for patients with SIRI ≥1.11, and unreached for patients with SIRI <1.11, showing a significant difference between them ( χ2=45.57, P<0.05). ③ The median overall survival time was unreached for patients with PNI ≥46.28, and 38(0,47)months for patients with PNI <46.28, showing a significant difference between them ( χ2=12.53, P<0.05). ④ The median overall survival time was unreached for patients with PG-SGA <4 and ≥4, showing a signifi-cant difference between them ( χ2=14.41, P<0.05). ⑤ The median overall survival time was 25(1,47)months for patients in pathological stage Ⅲ, 12(1,32)months for patients in stage Ⅳ, and unreached for patients in stage 0, Ⅰ, Ⅱ, respectively, showing a significant difference among them ( χ2=58.75, P<0.05). ⑥ The median overall survival time was 33(1,47)months for patients with postoperative complication, and unreached for patients without postoperative complication, showing a significant difference between them ( χ2=14.27, P<0.05). Conclusions:Preoperative SII, SIRI and PNI have good predictive value for postoperative survival in elderly patients with esophageal squamous carcinoma. Preoperative SII ≥470.71×10 9/L, preoperative SIRI ≥1.11, preoperative PNI <46.28, score of preoperative PG-SGA ≥4, postoperative pathological stage Ⅳ, and postoperative complications are independent risk factors for the overall survival time of elderly patients with esophageal squamous carcinoma. Patients with preoperative SII <470.71×10 9/L, preoperative SIRI <1.11, preoperative PNI >46.28, score of preoperative PG-SGA <4, postoperative pathological stage 0, Ⅰ, Ⅱ, and non post-operative complications have better survival.
8.Verification of Yunshi Ganmao Heji efficacy against respiratory syncytial virus based on network pharmacology and animal experiments
Qingsheng XU ; Yuqian LI ; Lina JIANG ; Hong WEI ; Qianwen CHI ; Sirui LIAO ; Weijiao CHEN
Chinese Journal of Microbiology and Immunology 2024;44(2):170-182
Objective:To investigate the mechanism of Yunshi Ganmao Heji against respiratory syncytial virus (RSV) infection based on network pharmacology and in vivo experiments. Methods:Network pharmacological prediction: Several databases including TCMSP and GeneCards were used to predict the active ingredients and targets of Yunshi Ganmao Heji in the intervention of RSV infection. Cytoscape 3.2.1 software was used to construct the traditional Chinese medicine component-disease target network diagram. The interactions between proteins were analyzed by STRING database. GO functional enrichment analysis and KEGG pathway enrichment analysis were performed using Metascape database. Molecular docking technology was used to verify the results of network pharmacology. Experimental verification of Yunshi Ganmao Heji for the intervention of RSV infection: A mouse model of RSV infection was established through intranasal infection. After the administration of Yunshi Ganmao Heji, blood routine test results, lung indexes and pathological changes in lung tissue were analyzed. Peripheral blood T cell subsets were detected by flow cytometry. The levels of TNF-α, IL-6 and IL-1β in serum were detected by ELISA. RT-PCR was used to detect the relative expression of TLR4, NF-κB and RSV-N gene at mRNA level in lung tissues.Results:A total of 41 active ingredients of Yunshi Ganmao Heji and 111 drug targets for RSV infection were obtained. Besides, 167 signaling pathways mainly including PI3K/AKT, MAPK and Toll-like receptor signaling pathways were obtained. Molecular docking results showed that the binding energies of luteotin, kaempferol and quercetin, three active ingredients of Yunshi Ganmao Heji, with RSV-G, RSV-F, PI3K, AKT1 and Bcl-2 were less than 0 kcal/mol. In vivo experiment results showed that compared with RSV group, the counts of white blood cells and lymphocytes increased and the lung index decreased in high-dose Yunshi Ganmao Heji group, with statistically significant difference ( P<0.05). HE staining showed pulmonary hyperplasia, thickened alveolar wall and inflammatory cell infiltration in interstitium in RSV group. Alveoli in ribavirin group as well as low-dose, medium-dose and high-dose Yunshi Ganmao Heji groups tended to be of uniform size, and the alveolar walls was roughly uniform in thickness. Compared with RSV group, the low-dose, medium-dose and high-dose Yunshi Ganmao Heji groups showed significantly increased numbers of CD3 +, CD4 + and CD8 + T lymphocytes, decreased CD4 + /CD8 + T cell ratio, lower levels of TNF-α, IL-6, IL-1β in serum, and reduced viral load and inhibited expression of TLR4 and NF-κB at mRNA level in lung tissues ( P<0.05). Conclusions:Yunshi Ganmao Heji can regulate RSV infection by targeting multiple targets and pathways with several active ingredients. Its main functions are to alleviate pathological injury in lung tissues and reduce inflammatory response, and the possible mechanism underlying the antiviral functions may be related to its inhibitory effect on the activation of TLR4/NF-κB pathway.
9. Application of hemihepatectomy combined with a circular-stretching suturing technique in bile duct anastomosis in the treatment of high level bile duct injuries
Xintao ZENG ; Pei YANG ; Hua LUO ; Wei ZHANG ; Sirui CHEN ; Junyang PENG ; Wentao WANG
Chinese Journal of Hepatobiliary Surgery 2019;25(9):676-680
Objective:
To study hemihepatectomy combined with a circular-stretching suturing technique in bile duct anastomosis in treatment of high level bile duct injuries (BDI).
Methods:
From January 2000 to January 2018, eleven patients with high level BDI caused by laparoscopic cholecystectomy (LC) were treated in Mianyang Central Hospital with hemihepatectomy combined with a circular-stretching suturing technique in the bile duct anastomosis. The hilar confluence was involved in all these patients. A total of six patients had combined right hepatic artery injury with 1 having associated right portal vein injury. A total of five patients had developed right liver atrophy. The median time interval from LC to hepatectomy was 17.0(2.0~61.0) months. The number of previously attempted biliary repairs was 1~4 times (median 2 times). The bile duct anastomosis was performed by the circular-stretching suturing technique.
Results:
There was no perioperative death. One patient underwent left hemihepatectomy and 10 patients right hemihepatectomy. Roux-en-Y hepaticojejunostomy was carried out in 9 patients, and bile duct end-to-end anastomosis in 2 patients. The operation time was (245.9±87.4) min, intraoperative blood loss (655.7±413.6) ml, and the median postoperative hospital stay 12.0(7.0~29.0) days. Five patients developed complications. The median follow-up was 47.0(15.0~89.0) months. One patient developed anastomotic stenosis and 1 patient had cholangitis. The remaining 9 patients were well.
Conclusion
After adequate preoperative preparation, patients who were treated with hemihepatectomy combined with the circular-stretching suturing technique for bile duct anastomosis to treat high level BDI achieved good results.
10. Effects of definitive repair surgery on health-related quality of life in patients with bile duct injury after laparoscopic cholecystectomy
Xintao ZENG ; Pei YANG ; Hua LUO ; Wei ZHANG ; Sirui CHEN ; Junyang PENG ; Wentao WANG
Chinese Journal of Digestive Surgery 2019;18(12):1142-1148
Objective:
To investigate the effects of definitive repair surgery on health-related quality of life (HRQOL) in patients with bile duct injury after laparoscopic cholecystectomy (LC).
Methods:
The retrospective case-control study was conducted. The clinicopathological data of 181 patients with bile duct injury caused by LC for benign gallbladder diseases who underwent definitive repair surgery and 50 patients without complications after LC for benign gallbladder diseases in the Mianyang Central Hospital from January 2000 to December 2017 were collected. There were 82 males and 99 females of 181 patients with bile duct injury, aged from 31 to 68 years, with an average age of 47 years. Definitive repair surgery was performed according to different types of bile duct injury, and questionnaire of HRQOL was conducted preoperatively and one year after operation. There were 18 males and 32 females of 50 patients without complications after LC, aged from 35 to 69 years, with an average age of 41 years. Questionnaire of HRQOL was conducted on LC patients without complications one year after operation. Observation indicators: (1) classification of bile duct injury; (2) intraoperative situations of definitive repair surgery; (3) postoperative situations of definitive repair surgery; (4) follow-up; (5) results of the SF-36 scale assessment. Follow-up was conducted by outpatient examination and telephone interview up to December 2018. Patients were reexamined liver function and color Doppler ultrasonography once every 6-12 months, and further magnetic resonance cholangiopancreatography (MRCP) or computed tomography examination to detect recurrence of anastomotic biliary stricture and cholangitis. Measurement data with normal distribution were expressed as