Detection rate and clinical characteristics of vulvar squamous intraepithelial lesion / 中华妇产科杂志

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.

Cervical cancer screening and early diagnosis / 中国医师杂志

Among female malignant tumors, cervical cancer ranks fourth in terms of incidence rate and mortality. To accelerate the elimination of cervical cancer, increasing the vaccination rate of human papillomavirus (HPV) and cervical cancer screening are the most important methods. In recent years, the incidence of cervical cancer in China has shown a younger trend, and the population screening rate is low. Scientific and extensive cervical cancer screening and early diagnosis are crucial. The screening strategies for cervical cancer in various countries around the world have certain differences and are constantly updated in terms of methods, start time, time interval, and end time. Starting from the etiology and epidemiology of cervical cancer, this article summarizes the latest cervical cancer screening methods, strategies, and early diagnosis experience at home and abroad, providing help and thinking for the prevention and treatment of cervical cancer.

Stratified research on related risk factors of CINⅡ + in CINⅠ patients diagnosed by endocervical curettage under colposcopy / 中华妇产科杂志

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.

BBX transcriptional factors family in plants-a review / 生物工程学报

Transcriptional factors play important roles in plant growth, development and responses to stresses. BBX transcriptional factors are characterized with one or two B-box domains in the protein sequence. They are comprehensively involved in photomorphogenesis, flowering, shade avoidance, signal transduction of phytohormones, biotic and abiotic stress responses in plants by regulating gene transcription and interacting with other transcription factors. The classification, structure and functions of BBX of plants are reviewed in this paper.

Detection trend of vaginal intraepithelial neoplasia diagnosed by colposcopy guided biopsy from 2013 to 2015 / 中华妇产科杂志

Objective To explore the detection trend of vaginal intraepithelial neoplasia(VaIN)of lower genital tract from 2013 to 2015. Methods A retrospective analysis was undertaken of colposcopy-directed biopsy of cervical, vaginal and vulvar intraepithelial neoplasia lesions include cervical intraepithelial neoplasia (CIN), VaIN and vulvar intraepithelial neoplasia (VIN) in Obstetrics and Gynecology Hospital of Fudan University from January 2013 to December 2015. Results (1) Overall data of CIN, VaIN and VIN:a total of 16732 cases were diagnosed of lower genital intraepithelial neoplasia in 3 years, accounting for 23.20% (16732/72128) of total colposcopy-directed biopsy cases. Among them, CIN, VaIN and VIN accounted for 19.48%(14053/72128), 2.67%(1923/72128), 1.05%(756/72128) of total colposcopy-directed biopsy cases of the lower genital tract, 83.99%(14053/16732), 11.49%(1923/16732), 4.52%(756/16732) of total lower genital intraepithelial neoplasia, respectively. (2) Annual data of CIN, VaIN and VIN from 2013 to 2015. The annual proportion of CIN in all intraepithelial neoplasia of lower gential tract was basically stable, consisting of 86.02%(3955/4598),83.25%(4795/5760) and 83.20%(5303/6374), respectively. The annual proportion of VaIN was gradually increasing, consisting of 8.09% (372/4598), 12.45%(717/5760) and 13.08%(834/6374), respectively. The annual proportion of VIN was gradually decreasing, consisting of 5.89% (271/4598), 4.31% (248/5760) and 3.72% (237/6374), respectively. Conclusion The increasing detection of VaIN from 2013 to 2015 might correlate with the increasing attention to inspection of the entire vaginal wall.

Efficacy of auxiliary therapy with Danggui Buxue Decoction No.1 in treating patients of non-small cell lung cancer at peri-operational stage / 中国结合医学杂志

<p><b>OBJECTIVE</b>To observe the therapeutic efficacy of Danggui Buxue Decoction No.1 in treating patients of non-small cell lung cancer (NSCLC) at the peri-operational stage and its impact on the patients' immune function.</p><p><b>METHODS</b>Eighty-two NSCLC patients were randomly assigned to two groups equally, the control group and the test group, they were given conventional treatment, while to the test group, DB1 were given additionally. The observation was conducted by testing the changes of T-lymphocyte subsets, natural killer (NK) cell activity, serum levels of immunoglobulin (IgA, IgM, IgG), interleukin-2 (IL-2), tumor necrosis factor alpha (TNF-alpha), cytokeratin fragment 19 (CYFRA21-1) and carcinoembryonic antigen (CEA) in NSCLC patients before and after administration of DB1, and analyzing the patients' general condition.</p><p><b>RESULTS</b>The level of CD3(+), CD4(+), the ratio of CD4 and CD8(+), IgA, IgM, IgG and IL-2 decreased in patients with NSCLC on day 1 after operation, and the level of CD8 and TNF-alpha increased compared to pre-operation. While the levels of CD3(+), CD4(+), CD4 /CD8(+), NK cell activity, serum IgA, IgM, IgG, IL-2 began to elevate, CD8 and TNF-alpha levels began to decline in patients administered with DB1 on day 3 after the operation, earlier than patients who did not use the decoction. The level of CYFRA21-1 and CEA, was immediately decreased after operation in both groups.</p><p><b>CONCLUSIONS</b>Applying DB1 to NSCLC patients at an early post-operational stage could alleviate the impairment and accelerate the recovery of immune function of patients to enhance their immunity. DB1 also shows an anti-tumor action to a certain degree.</p>

Using 1H-MRS to evaluate the effects of warm ischemia reperfusion injury on the regeneration of hepatic cells in orthotopic transplanted livers in rats / 中华肝脏病杂志

<p><b>OBJECTIVE</b>To investigate the prognostic value of proton magnetic resonance spectroscopy (1H-MRS) in the study of warm ischemia reperfusion injury to the regeneration of hepatic cells of the livers following their orthotopic transplantation in rats.</p><p><b>METHODS</b>A rat orthotopic liver transplantation (OLT) model with warm ischemia, the experimental group, was established and the same was done with a control group but without warm ischemia of the livers. They were studied at 6 time points (6 hours, 1, 3, 7, 14, and 30 days after OLT). All rats took axial T1 weighted and T2 weighted imaging scans and 1H MR spectroscopies.</p><p><b>RESULTS</b>The positive rate of proliferating cell nuclear antigen (PCNA) and the mean peak choline/water ratio in the experimental group were significantly higher than those in the control group and the peak choline /water ratio had a positive correlation with the positive rate of PCNA. Serum ALT and AST increased significantly after OLT, especially during the 6 hour to 3day period. The levels of ALT and AST were markedly higher in the experimental group compared to the control group.</p><p><b>CONCLUSION</b>Warm ischemia reperfusion injury of OLT has a significant effect on the regeneration of hepatic cells, and the choline peak of 1H-MRS can be used to evaluate the regeneration of hepatic cells non-invasively.</p>

Dechlorination by combined electrochemical reduction and oxidation / 浙江大学学报（英文版）（B辑：生物医学和生物技术）

Chlorophenols are typical priority pollutants listed by USEPA (U.S. Environmental Protection Agency). The removal of chlorophenol could be carried out by a combination of electrochemical reduction and oxidation method. Results showed that it was feasible to degrade contaminants containing chlorine atoms by electrochemical reduction to form phenol, which was further degraded on the anode by electrochemical oxidation. Chlorophenol removal rate was more than 90% by the combined electrochemical reduction and oxidation at current of 6 mA and pH 6. The hydrogen atom is a powerful reducing agent that reductively dechlorinates chlorophenols. The instantaneous current efficiency was calculated and the results indicated that cathodic reduction was the main contributor to the degradation of chlorophenol.