1.Clinical effect of secondary LEEP combined with transcervical resection of endocervical tissue for cervical precancerous lesions with positive internal margin after the first LEEP
Jingjing XIAO ; Yixin SUN ; Qing WANG ; Long SUI ; Hongwei ZHANG ; Qing CONG
Chinese Journal of Obstetrics and Gynecology 2024;59(10):786-793
Objective:To preliminarily investigate the clinical outcomes of secondary loop electrosurgical excision procedure (LEEP) combined with transcervical resection of endocervical tissue (i.e., second combined surgeries) in patients with positive endocervical margins following the initial LEEP for high-grade squamous intraepithelial lesion (HSIL) or adenocarcinoma in situ (AIS) of the cervix.Methods:Patients who underwent second combined surgeries due to positive endocervical margins after the initial LEEP for cervical HSIL or AIS at Obstetrics and Gynecology Hospital, Fudan University between August 2015 and September 2023 were included. Postoperative cytological examinations, high-risk human papillomavirus (HR-HPV) testing, colposcopic biopsy results, and cervical canal length were followed up to evaluate the clinical efficacy of second combined surgeries.Results:(1) General clinical data: a total of 67 patients were enrolled, including 34 with cervical HSIL (HSIL group) and 33 with AIS (AIS group). In the HSIL group before the time of initial LEEP, the mean age was (41.3±5.3) years, with all patients positive for HR-HPV preoperatively. Preoperative cytology results revealed ≤low-grade squamous intraepithelial lesion (LSIL) in 13 cases and ≥HSIL in 21 cases. The preoperative cervical canal length was (3.71±0.17) cm. Patients in the AIS group before their the first LEEP were at an average age of (39.1±8.7) years old, with preoperative HR-HPV positive. Among them, 16 cases showed preoperative cytological results of ≤LSIL, while 17 cases showed ≥HSIL. The preoperative cervical canal length was (3.64±0.21) cm. (2) Pathological findings and postoperative follow-up of the HSIL group following second combined surgeries:in the HSIL group, the residual rate of HSIL in the endocervical canal tissue (ECT) was 24% (8/34). Out of the 34 HSIL patients, 10 cases (29%, 10/34) remained with positive endocervical margins post-second combined surgeries. Among these 10 patients, 5 cases (5/10) had no lesion detected in ECT, while the remaining 5 cases (5/10) exhibited HSIL in their ECT. Conversely, 24 patients (71%, 24/34) had negative endocervical margins after second combined surgeries. Of these 24 patients, 3 cases (12%, 3/24) were found to have HSIL in ECT, and 21 cases (88%, 21/24) had no lesion in ECT. During follow-ups conducted at 6 and 12 months post-second combined surgeries, the clearance rates of HR-HPV were 91% (31/34) and 100% (34/34), respectively. Notably, among the 29 patients (85%, 29/34) who were followed up for a period of 2 years or longer, all cases maintained a consistently negative HR-HPV status, highlighting the effectiveness of second combined surgeries in achieving long-term HR-HPV clearance (100%, 29/29). (3) Pathological findings and postoperative follow-up of the AIS group following second combined surgeries: the residual rate of AIS in the ECT following second combined surgeries among AIS patients was 15% (5/33). Out of the 33 AIS patients, 11 cases (33%, 11/33) had positive endocervical margins post-operation, among whom AIS was detected in the ECT of 2 cases (2/11), while 1 case (1/11) was diagnosed with adenocarcinoma in the cervical canal tissue (subsequently underwent radical surgery and was excluded from this study). In contrast, 22 patients (67%, 22/33) had negative endocervical margins post-operation, with AIS found in the ECT of 2 cases (9%, 2/22) and no lesions detected in the remaining 20 cases (91%, 20/22). Follow-up evaluations conducted at 6 and 12 months postoperatively revealed HR-HPV clearance rates of 91% (29/32) and 97% (31/32), respectively. All 32 (100%, 32/32) AIS patients were followed up for a duration of ≥2 years post-second combined surgeries, during which HR-HPV remained consistently negative. (4) Complications and cervical length following second combined surgeries: neither the HSIL group nor the AIS group experienced significant complications such as hemorrhage, infection or cervical canal adhesion. At the 6-month follow-up, the cervical length of both HSIL and AIS patients exceeded 3 cm. By the 12-month follow-up, the cervical length had recovered to 96.5% and 97.5% when compared to the original length, respectively, for the HSIL and AIS groups.Conclusions:For patients with HSIL or AIS who exhibit positive endocervical margins following the initial LEEP procedure, undergoing second combined surgeries presents as an optimal choice. This surgical intervention guarantees thorough excision of the lesion, and subsequent colposcopic follow-up evaluations consistently demonstrate an absence of residual disease or recurrence. Moreover, it augments the rate of sustained HR-HPV negativity, thereby contributing to more favorable clinical outcomes.
3.A Case Report of Blau Syndrome
Guozhuang LI ; Kexin XU ; Sen ZHAO ; Jianguo ZHANG ; Guixing QIU ; Ruifang SUI ; Tao WANG ; Min SHEN ; Xuejun ZENG ; Wei WANG ; Mingsheng MA ; Min WEI ; Xiao LONG ; Ke LYU ; Li HUO ; Lei XUAN ; Nan WU
JOURNAL OF RARE DISEASES 2023;2(4):547-553
Blau syndrome is a rare genetic disorder characterized by the a mix of granulomatous arthritis, uveitis, and dermatitis. Patients typically manifest multisystem involvement, including ocular, skin, and skeletal abnormalities. Blau syndrome is extremely rare, with a global incidence of less than one in a million among children. In this multidisciplinary consultation, we present a case of a 21-year-old young female patient having multisystemic involvement since early childhood. She was presented with multiple joint swelling, skin lesions, increased eye discharge, and accompanied by hypertension and arterial abnormalities, and received a diagnosis of uveitis. The patient had been receiving steroid treatment since the age of 6 and has tried various medications, with some improvement in joint swelling and ocular symptoms. Through this rare disease multidisciplinary consultation, we aim to provide guidance in the molecular diagnosis of the patient, multisystem assessment, and the selection and formulation of treatment plans. Additionally, we hope that by reporting this case, clinical physicians can gain a better understanding of the diagnosis and comprehensive treatment strategies for Blau syndrome, thereby improving the management and treatment of rare diseases.
4.Detection rate and clinical characteristics of vulvar squamous intraepithelial lesion
Lu ZHANG ; Yinping XIAO ; Xiang TAO ; Yuankui CAO ; Long SUI ; Qing CONG
Chinese Journal of Obstetrics and Gynecology 2023;58(8):603-610
Objective:To explore the detection rate, clinical characteristics of vulvar squamous intraepithelial lesion (SIL).Methods:Women diagnosed with vulvar high-grade squamous intraepithelial lesions (HSIL) through colposcopy-guided biopsy from January 1, 2018 to August 31, 2022 in Obstetrics and Gynecology Hospital of Fudan University were included in a 1∶1 ratio with patients diagnosed with vulvar low-grade squamous intraepithelial lesions (LSIL) during the same period. Clinical characteristics including human papillomavirus (HPV) infection rate, genotype, cytology result, colposcopy impression, and lesion location were retrospectively analyzed.Results:(1) The proportion of vulvar SIL detected by colposcopy-guided biopsy increased annually from 2018 to 2022, with rates of 1.64% (740/45 057), 2.34% (1 110/47 402), 2.68% (1 108/41 335), 3.26% (1 536/47 078), 3.31% (667/20 155), with an average rate of 2.57% (5 161/201 027). (2) A total of 1 096 cases of vulvar HSIL and 1 096 cases of vulvar LSIL were included. The overall infection rate of HPV was 92.7% (1 993/2 150), with higher infection rate in vulvar HSIL patients than that in vulvar LSIL patients [96.0% (1 012/1 054) vs 89.5% (981/1 096); χ2=33.62, P<0.001]. Among vulvar HSIL patients, the common HPV genotype from high to low were HPV 16 (66.7%), HPV 52 (14.3%), and HPV 58 (10.0%). For vulvar LSIL patients, the most common HPV genotype were respectively HPV 16 (24.9%), HPV 6 (20.1%) and HPV 52 (17.1%). The overall sensitivity rate of cytology was 53.6%, with no significance difference between vulvar LSIL and HSIL groups (54.3% vs 52.9%; χ2=0.40, P=0.526). The accuracy of colposcopy impression for vulvar HSIL was lower than that for vulvar LSIL [40.2% (163/405) vs 81.7% (380/465); χ2=158.72, P<0.001]. About 57.3% (1 257/2 192) of the patients had concomitant cervical and vaginal lesions, with a higher rate in vulvar HSIL group than that in vulvar LSIL group [62.6% (686/1 096) vs 52.1% (571/1 096); χ2=24.67, P<0.001]. Unifocal lesion was the main type, with no significance difference between vulvar LSIL and HSIL groups [81.4% (381/468) vs 82.5% (386/468); χ2=0.18, P=0.671]. The most common lesion locations were the posterior commissure, followed by labia minora, vaginal vestibule, labia majora, perianal and clitoris. Conclusions:The detection rate of vulvar SIL under colposcopy is about 3%, and the infection rate of HPV is 92.7%. Vulvar SIL, especially vulvar HSIL, is likely to cause concomitant cervical and vaginal lesions. The accuracy of colposcopy in diagnosing vulvar HSIL is low. Therefore a comprehensive and careful examination of the vulva is necessary and suspicious vulvar lesions should be undergone colposcopy-guided biopsy for diagnosis.
5.Stratified research on related risk factors of CINⅡ + in CINⅠ patients diagnosed by endocervical curettage under colposcopy
Jingjing XIAO ; Ziren CHEN ; Qing WANG ; Long SUI ; Qing CONG
Chinese Journal of Obstetrics and Gynecology 2022;57(8):608-617
Objective:To estimate risks of cervical intraepithelial neoplasia (CIN) Ⅱ or worse (CINⅡ +) on loop electrosurgical excisional procedure (LEEP) specimens with the diagnosis of endocervical curettage (ECC) CINⅠ compared with biopsy CINⅠ, and also to investigate the hierarchical management scheme of ECC CINⅠ based on the relevant factors of CINⅡ + risk. Methods:(1) A retrospective computer-based research for subjects enrolled in the Obstetrics and Gynecology Hospital, Fudan University from Jan. 2013 to Jun. 2021 was performed. The case group comprised women with an ECC CINⅠ (ECC results of CINⅠ with colposcopy-directed biopsy results ≤CINⅠ), and the control group comprised women with a biopsy CINⅠ (colposcopy-directed biopsy results of CINⅠ with negative ECC findings) were divided after LEEP surgery and diagnosis in the next three months. The clinical data of all patients before LEEP were analyzed, and the pathological diagnosis between two groups after LEEP was compared. (2) Variables, including age, cytology, high-risk human papillomavirus (HR-HPV), ECC results, cervical transformation zone (TZ) and colposcopy impression, were included to describe the characteristics and compare the incidence of LEEP CINⅡ +. (3) Univariate analysis and Multivariate logistic regression method were used to analyze the related factors that affect the LEEP CINⅡ + in CINⅠ patients. Further, the specific risks caused by related factors and conduct a stratified study in LEEP CINⅡ + were analyzed. Results:(1) Overall, 2 581 women with ECC CINⅠ or biopsy CINⅠ diagnosis who underwent LEEP participated in the study with the mean age (43.6±9.5) years old. Chi square test found that the age and cytology of patients in ECC CINⅠ group were statistically different from those of biopsy CINⅠ group (all P<0.05). There was no significant difference in HR-HPV detection, TZ type and colposcopy impression between the two groups (all P>0.05). ECC CINⅠ comprised 957 women, with LEEP histopathology results revealing 288 (30.1%, 288/957) CINⅡ +, which was significantly higher than that of biopsy CINⅠ which was comprised 1 624 women, with LEEP histopathology results showing 333 (20.5%, 333/1 624) CINⅡ + ( χ2=30.31, P<0.001). (2) Compared by LEEP CINⅡ + with LEEP ≤CINⅠ group, there were no significant difference in the age, HR-HPV, colposcopy impression (all P>0.05); but there were significantly differences in cytology, ECC CINⅠ, type Ⅲ TZ (all P<0.001). Multivariate logistic regression analysis showed that atypical squamous epithelial cells (ASC-H; OR=2.77, 95% CI: 2.04-3.77), high-grade squamous intraepithelial lesions and worse (HSIL +; OR=2.93, 95% CI: 2.24-3.81), ECC CINⅠ ( OR=1.89, 95% CI: 1.56-2.29) and type Ⅲ of TZ ( OR=1.76, 95% CI: 1.45-2.11) were independent risk factors for LEEP CINⅡ + (all P<0.05). (3) When cytology was ≤low-grade squamous intraepithelial lesion (LSIL) and ≥ASC-H, the detection rate of CINⅡ + in ECC CINⅠ was significantly higher than that of biopsy CINⅠ (all P<0.001). In ECC CINⅠ, the rate of CINⅡ + with cytology ≤LSIL was significantly lower than that in cytology ≥ASC-H (56.0% vs 25.9%; χ2=49.38, P<0.001). In type Ⅰ/Ⅱ of TZ, the detection rate of CINⅡ + between ECC CINⅠand biopsy CINⅠ had no significantly different; while in type Ⅲ of TZ, there was significantly different (72.7% vs 46.2%; χ2=4.02, P=0.045). In ECC CINⅠ, type Ⅲof TZ was significantly higher in the rate of CINⅡ + than that of type Ⅰ/Ⅱ of TZ (72.7% vs 21.7%; χ2=16.38, P<0.001). When cytology ≥ASC-H, type Ⅲ of TZ and colposcopy impression of HSIL were combined, the rate of CINⅡ + in ECC CINⅠ was 6/6 while 1/3 in biopsy CINⅠ. Conclusions:Cytology ≥ASC-H, ECC CINⅠ and type Ⅲ TZ are the risk factors of LEEP CINⅡ +. However, cytology ≥ASC-H is more valuable in predicting LEEP CINⅡ + than ECC CINⅠ. For patients with ECC CINⅠ to perform LEEP, it is recommended that cytology ≥ASC-H is taken as the first level stratification, and type Ⅲ TZ is taken as the second level stratification. The colposcopy impression of patients is recommended for a reference parameter.
6.Correlation of KRAS mutations and clinicopathological parameters in colorectal carcinoma
Long JIN ; xia Yu SUI ; ping Li WANG ; feng Ling CHEN ; yan Xiao CHEN
Basic & Clinical Medicine 2018;38(1):32-36
Objective To investigate mutation rate and types of KRAS in colorectal carcinoma , and to analyze the relationship between KRAS mutation and clinicopathological parameters in patients with colorectal carcinoma ( CRC) .Methods Scorpions Amplification Refractory Mutation System ( ARMS) fluorescence quantitative PCR was performed to detect the mutations in codons 12 and 13 of KRAS and to correlate between clinicopathological characteristics and the presence of various KRAS mutations of colorectal carcinoma .Results KRAS mutations were identified in 518 patients ( 42.92%) , including G12D ( 197 cases, 16.32%) , G12V ( 125 cases, 10.36%),G12C(40 cases, 3.31%),G12S(29 cases, 2.40%),G12A(21cases, 1.74%),G12R(7 cases, 0.58%),13D(117 cases, 9.69%).Female patients had a higher KRAS mutation rate than male (46.21%, 238/515 vs.40.46%, 280/692, P<0.05 ) .KRAS mutation was significantly higher in right colon cancer (46.45%,131/282)and in rectal cancer(44.50%,255/573)than that in left colon cancer(37.50%,132/352) (P<0.05,P<0.05).Conclusions There are many types of KRAS mutations in colorectal cancer, and many mutation types exist simultaneously .The detection rate of KRAS mutation is higher in female CRC patients than in the males.The detection rate of KRAS mutation is significantly higher in right colon cancer and in rectal cancer than that in left colon cancer.
7.Expression of autophagy-related genes Beclin1 and LC3 in ovarian serous carcinoma and their clinical significance
Long JIN ; Yu-Xia SUI ; Yang SUN ; Xiao-Yan CHEN ; Zhi-Zhong CHEN ; Ling-Feng CHEN ; Yan-Hui LI ; Li-Ping WANG
Chinese Journal of Clinical and Experimental Pathology 2017;33(11):1219-1224
Purpose To detect the expression of autophagy-related genes Beclin1 and microtubule-associated protein1 light chain3 (LC3) in ovarian serous carcinoma (OSC) and to analyze the correlations with clinical pathological characteristics and prognosis of patients with OSC.Methods Immunohistochemical staining of MaxVision two-step was performed to detect the expression of Beclin1 and LC3 in the samples from 63 OSC patients and 20 with benign ovarian serous cystadenomas.The relation between Beclin1 and LC3 with the factors influencing the prognosis of OSC was investgated.The expression levels of mRNA and proteins in 10 fresh OSC samples and their corresponding adjacent noncancerous tissues were examined by RT-PCR and Western blot.Results The positive percentage of Beclin1 and LC3 protein in the tissues of OSC was 36.51% and 33.33%,which was significantly lower than that of 65.00% and 60.00% in serous cystadenomas (P =0.025,P =0.034).The expression of Beclin1 in OSC was significantly correlated with clinical FIGO stage and pathological grade (P =0.001,P =0.001),but not associated with age,site,tumor size and lymph node metastasis (P > 0.05).The expression of LC3 protein in OSC was significantly with clinical FIGO stage and lymph node metastasis (P =0.013,P =0.041),but not associated with age,site,tumor size and pathological grade (P > 0.05).There was a positive correlation between Beclin1 and LC3 in OSC (rs =0.373,P =0.03).The levels of Beclin1 and LC3 mRNA (0.581-±0.091,0.650 ±0.090) in 10 fresh OSC were significantly lower than in their adjacent noncancerous tissues (t=8.083,t =6.614,P =0.016,P =0.022).The levels of Beclin1 and LC3 protein in 10 fresh OSCs were significantly lower than in their adjacent noncancerous tissues (P < 0.05).Kaplan-Meier survival analyses revealed that the expression of Beclin1 and LC3 were associated with the patients prognosis (P =0.028 3,P =0.018 5).Conclusion Expression of Beclin1 and LC3 protein is down-regulated in the tissues of OSC which lead to decrease of function of autophagy.The decrease of Beclin1 and LC3 may be associated with the development and prognosis of OSC.
8.Effectiveness of CLAT Protocol for Treating Patients with Refractory Acute Myeloid Leukemia.
Xiao-Mei CHEN ; Jian-Yu WENG ; Cheng-Xin DENG ; Yu-Lian WANG ; Zhi CHAO ; Pei-Long LAI ; Min-Ming LI ; Peng-Jun LIAO ; Xin HUANG ; Wei LING ; Chang-Chun WAN ; Sui-Jing WU ; Li-Ye ZHONG ; Ze-Sheng LU ; Xiao-Li ZOU ; Xin DU
Journal of Experimental Hematology 2016;24(2):399-404
OBJECTIVETo explore the clinical efficacy and toxicity of CLAT protocol (cladribine, cytarabine and topotecan) for treating patients with refractory acute myeloid leukemia (R-AML).
METHODSA total of 18 patients with R-AML (median age 37 years, range 18 to 58 years; male n = 16, female n = 2) were treated with CLAT protocol, which consisted of cladribine 5 mg/m(2)/d, i.v. on days 1-5, cytarabine 1.5 g/m(2)/d, i.v. on days 1-5, topotecan 1.25 mg/m(2)/d, i.v. on days 1-5 and G-CSF 300 µg/d subcutaneous injection on day 6 until neutrophile granulocyte recovery.
RESULTSOut of 18 patients 2 died of severe infection before the assessment. Among 16 evaluated patients, 10 (55.6%) achieved complete remission (CR), and 2 (11.1%) achieved partial remission (PR), the overall response rate was 66.7%, the rest 4 patients did not respond (NR). The median overall survival time and DFS for the CR patients was 9.5 months (95%CI: 6.7-16.64) and 9.5 months (95%CI: 6.1-16.7) respectively. The 1 year OS and DFS rates were 45% and 46.9%, respectively. All patients developed grade 4 of granulocytopenia and thrombocytopenia, the median duration was 13 (range 2 to 21) days and 12 days (range 2 to 21), respectively, all patients developed infection, 2 patients died of severe infection. The most common non-hematological side effects included nausea, vomiting, diarrhoea, rash, aminotransferase or bilirubin elevation and were grade 1 to 2.
CONCLUSIONThe CLAT protocol seems to have promising for the treatment of refractory AML patients, and patients well tolerated. This CLAT protocol offers an alternative treatment for R-AML patients who received severe intensive treatment, especially with anthracycline-containing chemotherapy.
Adolescent ; Adult ; Agranulocytosis ; Antineoplastic Combined Chemotherapy Protocols ; therapeutic use ; Cladribine ; therapeutic use ; Cytarabine ; therapeutic use ; Female ; Granulocyte Colony-Stimulating Factor ; therapeutic use ; Humans ; Leukemia, Myeloid, Acute ; drug therapy ; Male ; Middle Aged ; Remission Induction ; Thrombocytopenia ; Topotecan ; therapeutic use ; Young Adult
9.Diagnosis and treatment value of colposcopy and loop electrosurgical excision procedure in microinvasive cervical cancer:analysis of 135 cases
Fengyi XIAO ; Qing WANG ; Ruilian ZHENG ; Min CHEN ; Tingting SU ; Long SUI
Chinese Journal of Obstetrics and Gynecology 2016;51(3):186-191
Objective To explore the sensitivity and specificity of colposcopy directed biopsy (CDB) and the value of loop electrosurgical excision procedure (LEEP) for the diagnosis and treatment of microinvasive cervical cancer (MCC). Methods One hundred and thirty five patients with MCC were diagnosed with LEEP in Obstetrics and Gynecology Hospital, Fudan University from April 2008 to November 2010, and were retrospectively analyzed on CDB diagnoses and following treatment after LEEP. According to patient′s desire for preservation of fertility and cone margin status, following strategies after LEEP included follow-up, second LEEP, hysterectomy, modified radical hysterectomy and radical hysterectomy. Single and multiple factors related to residual lesions after LEEP were analysed with Pearson Chi-square test and logistic regression model, respectively. Results CDB diagnosed MCC with a sensitivity of 4.4%(6/135), specificity of 100.0%(4 680/4 680), and false negative rate of 95.6%(129/135). Among the 135 patients, 29 did not receive further treatment in our hospital and lost contact. One hundred and six patients had secondary treatment or follow-up in our hospital, 4 of among which were closely followed up;one hundred and two received further treatment, which included 6 cases with second LEEP (3 received extrafascial hysterectomy after repeat LEEP), 59 cases hysterectomy, 14 cases modified radical hysterectomy and 26 cases radical hysterectomy. For factors related to residual lesions after LEEP, single factor analysis showed that the ratio of residual lesion in patients aged 27-39, 40-49 and 50-65 years were respectively 19.0%(11/58), 15.4%(10/65) and 5/12 (χ2=4.505, P=0.105). Residual lesions occurred in 24.7%(23/93) of patients with positive LEEP margins, which was more than that 7.1%(3/42) of patients with negative LEEP margins (χ2=5.756, P=0.016). The ratio of residual lesions in patients with positive endocervical, ectocervical and deep stromal margins were respectively 29.6%(8/27), 17.1%(7/41)and 30.6%(11/36;χ2=2.275, P=0.321). Residual lesions in patients with or without lymph vascular space invasion (LVSI) were 2/7 and 18.8%(24/128), respectively (χ2=0.412, P=0.521). The ratio of residual lesions in patients with invasion depth of<1 mm was 17.1%(7/41), 1-<3 mm was 19.0%(16/84), and 3-5 mm was 3/10, with no significant difference among three groups (χ2=0.870, P=0.647). Logistic regression analysis showed positive cone margin (OR=5.069, P=0.014) and age (OR=1.080, P=0.024) were the independent risk factors of residual lesions after LEEP conization. Conclusions CDB alone is not adequate for the diagnosis of MCC. For young patients who desire to preserve fertility with a negative cone margin, close follow-up is acceptable. Cone margin status and age are two independent risk factors for residual lesions after LEEP.
10.Change of Ankyrin G Promoter Activity Following Treatment with Sodium Valproate at Different Concentrations.
Cui LIU ; Jie WU ; Xiao-long SUI ; Yan-hong LI ; Yun-lin HAN ; Yu-huan XU ; Lan HUANG ; Hua ZHU ; Shu-li SHENG ; Chuan QIN
Acta Academiae Medicinae Sinicae 2015;37(5):508-513
OBJECTIVETo investigate whether sodium valproate (VPA) directly regulates the activity of Ankyrin G(AnkG) promoter in vitro.
METHODSThe mouse AnkG promoter sequence was identified by comparing both human and mouse AnkG promoter sequences. The promoter was amplified from C57BL/6 mouse genome DNA and cloned into pGL3 Luciferase reporter vector. The Luciferase activity was detected in N2a and 293T cells and then treated with 0,0.5, and 1 mmol/L VPA for 12 h. The transcription activity of AnkG promoter in cells and the activity of VPA-treated Luciferase reporter vector in cells were detected using dual Luciferase reporter assay.
RESULTSThe AnkG promoter clone and its expression vector were successfully established, as confirmed by enzyme digestion and sequencing. The AnkG promoter showed high transcription activity in both N2a and 293T cells. The Luciferase activity was significantly induced following 0.5 mmol/L VPA treatment in both N2a and 293T cells. CONCLUSIONS VPA can up-regulate the AnkG expression via directly increasing its transcription activity. Thus, the in vivo AnkG expression may be directly regulated by the VPA at transcriptional level.
Animals ; Ankyrins ; Cell Line ; Genetic Vectors ; Humans ; Luciferases ; Mice ; Mice, Inbred C57BL ; Promoter Regions, Genetic ; Up-Regulation ; Valproic Acid

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