Reconstruction of a medium-sized congenital melanocytic nevus defect using a thin thoracodorsal artery perforator free flap: a case report

Congenital melanocytic nevus (CMN) is a benign condition that either is present at birth or develops in the first weeks of life. Surgical removal is typically performed to improve cosmetic appearance and reduce the risk of malignant transformation. In this report, we present the case of a 26-year-old woman with a medium-sized CMN on her left breast. The nevus measured 14×8 cm, and the patient desired a single-stage excision. However, this approach would result in a large skin defect that would be challenging to reconstruct using a local flap or skin graft. Moreover, it could potentially compromise the maintenance of natural sagging and the contour of the breast. Consequently, we opted to place a thin thoracodorsal artery perforator free flap following the removal of the CMN. The patient was satisfied with the overall surgical results. By utilizing this free flap for reconstruction, we successfully preserved the natural shape and contour of the breast without complications such as postoperative hypertrophic scarring or contracture at the recipient site.

Scar folding for the treatment of nostril stenosis after open rhinoplasty: a case report

A 25-year-old woman was referred for discomfort when breathing through her left nose. The patient had undergone augmentation rhinoplasty 5 years ago, after which hypertrophic scarring occurred in the left nostril. Several corticosteroid injections were administered as the first line of treatment, but with no symptom improvement. Therefore, we proceeded with surgical scar removal, with the use of a nasal conformer. However, scarring in the left nostril recurred. Accordingly, we proceeded with further surgical treatment using the scar folding technique. After scar folding, neither scarring nor nostril stenosis recurred during 1 year of postoperative follow-up. To summarize, herein, we report a case of hypertrophic scarring in the nostril that was successfully treated with the scar folding technique.

Minimally invasive removal of facial foreign body granulomas

Background@#Various materials, commonly called fillers, have been developed and are now used for cosmetic and reconstruction purposes. Indiscriminate injections of illegal and unknown substances have various side effects, among which foreign body granulomas are particularly difficult to treat. Surgical resection can be considered for small and well-defined foreign body granulomas, but complete resection is often impossible for wide facial granulomas, and postoperative deformities may occur. Therefore, this study presents cases where foreign bodies were evaluated using imaging studies and removed through minimally invasive procedures depending on their characteristics. @*Methods@#Thirty-five patients with chronic granulomas after illegal filler injections treated from 2012 to 2019 were enrolled. Clinically, these granulomas were classified into cystic and infiltrating groups according to the imaging study patterns. Patients in the cystic group underwent puncture and drainage, and those in the infiltrating group were first treated with intralesional laser treatment and then suctioned. If the results were insufficient, surgical removal combined with a lifting procedure was performed. @*Results@#All 35 patients were women, and their average age was 51 years. Surgery was successful in almost all cases, but four cases of insufficient removal and contour deformity were encountered during follow-up. Two patients underwent reoperation and two patients improved naturally. @*Conclusions@#In this study, we classified the characteristics of granulomas using preoperative imaging studies. Aesthetically favorable results were obtained using puncture and drainage and tumescent suction, along with, if necessary, surgical removal accompanied by a lifting procedure when removing facial foreign body granulomas.

Incidence of leptospirosis in Fujian province, 2015-2020 / 中华流行病学杂志

Objective: To analyze the incidence of leptospirosis in Fujian province from 2015 to 2020 and provide the scientific evidences for the risk assessment, prevention and control of leptospirosis. Methods: The incidence data of leptospirosis in Fujian during 2015-2020 were collected from China Information System for Disease Control and Prevention for a descriptive analysis, and software ArcGIS 10.3.1 was used for spatial autocorrelation analysis, and rats were captured in 17 surveillance areas during the same period, and the rat organs were collected for pathogen culture, the level of Leptospira antibody was detected in serum samples of rats, healthy population and the serum samples of patients sent by the hospitals. The infection status of Leptospira in human and rats were analyzed. Results: The incidence of leptospirosis in Fujian showed a downward trend from 2015 to 2020. A total of 176 cases of leptospirosis were reported. There were obvious seasonality and bimodal distribution. The majority of cases were farmers, accounting for 49.43% (87/176). Most cases were aged 30-69 years (85.80%, 151/176). The male to female ratio of the cases was 3.51∶1 (137∶39). Spatial autocorrelation analysis showed that leptospirosis had high or low clustering areas. From 2015 to 2020, the average capture rate of rats in 17 surveillance areas was 6.96% (1 519/21 838), Rattus losea, Rattus flavipectus and Niviventer fulvescens were the main species. The average positive rate of Leptospira antibody in rats was 28.64% (252/880). Java and Autumnalis were the predominant serogroups, accounting for 56.75% (143/252) and 17.46% (44/252), respectively. The average positive rate of Leptospira antibody in healthy population was 16.13% (254/1 575), and Autumnalis and Australis were the predominant serogroups, accounting for 71.65% (182/254). The confirmation rate of leptospirosis in patient serum samples sent by the hospitals was 2.23% (188/8 431), Autumnalis (56.38%, 106/188) and Hebdomadis (19.68%, 37/188) were the major serogroups. Conclusions: The incidence of leptospirosis in Fujian showed a downward trend from 2015 to 2020, there were obvious area clustering and seasonality. The high clustering areas were mainly distributed in northern, western and central Fujian. Java and Autumnalis were the predominant serogroups in rats. The infection rate in healthy population decreased year by year. Autumnalis and Hebdomadis were the main serogroups in population in Fujian.

Analysis on repetitive reporting of hepatitis B in Fujian province, 2016-2020 / 中华流行病学杂志

Objective: To analyze the repetitive reporting of hepatitis B in Fujian province during 2016-2020, and provide evidence for the improvement of hepatitis B surveillance. Methods: The reporting cards from the China Information System for Disease Control and Prevention were collected and divided into repetitive reporting cards and non-repetitive reporting cards from the report cards collected according to the valid ID number on the cards, and the proportion of repetitive report cards and related factors were analyzed by using software SAS 9.4. Results: A total of 314 551 hepatitis B reporting cards were submitted in Fujian from 2016 to 2020, in which 90.93% (286 020/314 551) were included in the analysis. The repetitive reporting cards accounted for 10.48% (29 982/286 020). The annual proportion of the repetitive reporting cards from 2016 to 2020 was between 2.98% and 3.71%, showing an overall increasing trend year by year (Z=2.26, P=0.024). The proportions of the repetitive reporting cards in 1-5 years were 3.17%, 5.40%, 7.74%, 9.27% and 10.48%, respectively, showing an increase trend with year (Z=128.16, P<0.001). The proportions of the repetitive reporting cards in 10 areas of Fujian ranged from 5.44% to 13.48% with significant difference (χ2=2 050.41, P<0.001) and increased with the increase of reported incidence of hepatitis B (Z=26.92, P<0.001). There were significant differences in relationships between repetitive reporting proportion and sex, age and type of the cases between the areas with high incidence and low incidence of hepatitis B. Conclusions: The reported incidence of hepatitis B was seriously affected by the repetitive reporting in Fujian from 2016 to 2020. A cross-year and cross-area surveillance mechanism for hepatitis B should be established and targeted measures should be taken to strengthen the control of the repetitive reporting and improve the surveillance for hepatitis B.

Case report of SAPHO syndrome in children / 中华实用儿科临床杂志

Retrospective analysis.To report a child with synovitis, acne, pustulosis, hyperostosis, osteitis (SAPHO) syndrome admitted to the Department of Pediatric Nephrology and Rheumatology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University in March 2020.A 14-year-old boy presented to hospital due to acne for more than 2 months, fever for more than 50 days, and hip pain for 2 weeks.The patient was diagnosed and treated as acne combined with infection and arthritis in other hospitals for more than 2 months without remission.He was initially diagnosed as juvenile idiopathic arthritis, acne combined with infection on admission.The disease was aggravated even after medications of anti-infection and anti-inflammatory drugs.After multidisciplinary consultation, the patient was diagnosed as SAPHO syndrome.The patient recovered from medications of Celecoxib, Sulfasalazine, recombinant human tumor necrosis factor receptorⅡ: IgG Fc fusion protein and other drugs.SAPHO syndrome is rare, especially in children, which is easily misdiagnosed.This case report suggested that SAPHO should be considered in children with acne, especially those combined with arthritis.

Serratia marcescens infection in a patient after a fat graft: a case report

Serratia marcescens is a Gram-negative, facultatively anaerobic bacillus that has been implicated in hospital-acquired infections. Because no previous cases of delayed infections caused by S. marcescens after autologous fat injection have been reported, we introduce a case report. A 74-year-old woman underwent fat injection for aesthetic purposes and visited our hospital for left cheek swelling after this procedure. Blood tests showed a slightly elevated white blood cell count. Facial computed tomography demonstrated an abscess and emergency surgery was performed. A work-up of the necrotic tissue and drained abscess contents was conducted. Cultures showed growth of S. marcescens. Based on the culture results , a proper antibiotic was prescribed. Follow-up blood tests showed normal findings, and there was no recurrent infection or inflammation. In most acute infections after a fat graft, Staphylococcus aureus or Staphylococcus epidermidis can be suspected, while mycobacterial infections are often suspected in cases of delayed infection and chronic inflammation. However, clinicians should keep in mind that there may be infections of uncommon bacteria. When an atypical delayed infection is suspected after an autologous fat graft, it is important to perform aseptic wound culture and biopsy as soon as possible, use appropriate antibiotics, and conduct proper surgical treatment.

Isolation of High Purity Mouse Mesenchymal Stem Cells through Depleting Macrophages Using Liposomal Clodronate

BACKGROUND@#The use of mouse bone marrow mesenchymal stem cells (mBMSCs) represents a promising strategy for performing preclinical studies in the field of cell-based regenerative medicine; however, mBMSCs obtained via conventional isolation methods have two drawbacks, i.e., (i) they are heterogeneous due to frequent macrophage contamination, and (ii) they require long-term culturing for expansion. @*METHODS@#In the present study, we report a novel strategy to generate highly pure mBMSCs using liposomal clodronate.This approach is based on the properties of the two cell populations, i.e., BMSCs (to adhere to the plasticware in culture dishes) and macrophages (to phagocytose liposomes). @*RESULTS@#Liposomal clodronate added during the first passage of whole bone marrow culture was selectively engulfed by macrophages in the heterogeneous cell population, resulting in their effective elimination without affecting the MSCs.This method allowed the generation of numerous high-purity Sca-1 ＋ CD44 ＋ F4/80 - mBMSCs ([ 95%) with just one passaging. Comparative studies with mBMSCs obtained using conventional methods revealed that the mBMSCs obtained in the present study had remarkably improved experimental utilities, as demonstrated by in vitro multilineage differentiation and in vivo ectopic bone formation assays. @*CONCLUSION@#Our newly developed method, which enables the isolation of mBMSCs using simple and convenient protocol, will aid preclinical studies based on the use of MSCs.

The Presence of Clonal Hematopoiesis Is Negatively Associated with Diabetic Peripheral Neuropathy in Type 2 Diabetes

Background@#Clonal hematopoiesis of indeterminate potential (CHIP) has been reported to be associated with increased cardiovascular disease, aging and insulin resistance. Despite the debate of causal contribution of CHIP on metabolic diseases, we want to explore whether CHIP is related to diabetic peripheral neuropathy (DPN). @*Methods@#This study analyzed the prevalence of CHIP in patients with type 2 diabetes classified according to DPN status. Logistic regression analysis was used to evaluate the association between CHIP and DPN. @*Results@#CHIP was more prevalent in subjects without DPN than those with DPN (19.9% vs. 8.8%, respectively; P=0.013). Individuals having any CHIP, or DNA methyltransferase 3A (DNMT3A) CHIP were less likely to have any abnormality shown in DPN test; the adjusted odds ratio were 0.85 (95% confidence interval [CI], 0.73 to 1.00) and 0.70 (95% CI, 0.56 to 0.89), respectively. Interestingly, DNMT3A CHIP showed the negative association, but Tet methylcytosine dioxygenase 2 (TET2) CHIP showed the positive association with abnormal feet electrochemical skin conductance level. @*Conclusion@#On the contrary to expectations, CHIP was negatively associated with DPN. Functional linking between the mutation in hematopoietic cells and DPN, and the opposite role of DNMT3A and TET2 should be investigated.

Effect of rape flower on benign prostatic hyperplasia in rats

We were carried out to investigate the efficacy of Rape (Rapeseed, Brassica napus L.) flower on BPH (benign prostatic hyperplasia) in rats. We found that the extract from Rape flower prevented hyperplasia in testosterone-induced BPH model, the relevant animal model of human BPH. Extract reduced the weight of prostate and induced significantly cell apoptosis in prostate in BPH model. In addition, the extract controlled expression of TGF-ß1 in prostate gland and promoted urinary output in dose-dependence in BPH model. Our data provide that Rape flower may be useful for treatment of BPH

Comparison on short-term safety outcomes between off-pump and on-pump coronary artery bypass grafting by experienced surgeons: a single center study with 31 075 cases / 中华心血管病杂志

Objective: To compare the short-term outcomes between off-pump and on-pump coronary artery bypass graft (CABG) by experienced surgeons with similar surgical team in a single large-volume cardiac surgery center. Methods: A total of 31 075 patients with multivessel coronary disease who underwent isolated off-pump or on-pump CABG between January 1, 2009 and December 31, 2019 by experienced surgeons in Fuwai hospital were enrolled in this retrospective study. Patients was divided into on-pump CABG group and on-pump CABG group on an intention-to treat basis. Short term safety endpoints, including 30 days mortality, composite endpoint of major morbidity or mortality, prolonged postoperative length of stay (PLOS), and prolonged ICU length of stay (PICULOS), and distal anastomosis were compared between the two groups. Mortality was evaluated on 30 days post operation, other endpoints were collected before discharge. After 1∶1 propensity-score matching of baseline characteristics for on-pump and off-pump CABG, postoperative endpoints were compared with use of McNemar's test and further adjusted with the use of a logistic regression model. Results: After propensity-score matching, 10 243 matched pairs of patients were included in the final analysis, there were 4 605(22.5%) females and mean age was (60.7±8.6) years. The standardized differences were less than 5% for all baseline variables in matched cohort. Univariate analysis indicated lower risk of 30 days mortality (0.2% vs. 0.7%, P<0.001), major morbidity or mortality (5.7% vs. 8.8%, P<0.001), PLOS (3.2% vs. 4.9%, P<0.001), PICULOS (9.4% vs. 12.2, P<0.001), and lower number of distal anastomosis ((3.3±0.8) vs. (3.6±0.8), P<0.001) in off-pump CABG group than in on-pump CABG group. After adjustment of cofounders, multivariate analysis showed that off-pump CABG was still associated with a lower risk of 30 days mortality (OR=0.29, 95%CI: 0.09-0.87, P=0.027), composite endpoint of major morbidity or mortality (OR=0.60, 95%CI: 0.53-0.68, P<0.001), PLOS (OR=0.64, 95%CI 0.54-0.75, P<0.001), PICULOS (OR=0.76, 95%CI: 0.69-0.84, P<0.001). Conclusions: Off-pump CABG is related with superior short-term safety outcomes than on-pump CABG by experienced surgeons in our center.

Cystic Primary Hepatic Neuroendocrine Tumor / 대한소화기학회지

Neuroendocrine tumors (NETs) can arise throughout the body. Most NETs in the liver are metastatic tumors; primary hepatic NET (PHNET) is extremely rare. A diagnosis of PHNET is very difficult. No single modality can diagnose PHNET by itself, and it often resembles other hypervascular masses of the liver. This paper reports the case of a 51-year old female with a large hepatic mass. Unlike most of PHNETs reported previously, it was composed of a solid mass with mainly multiple cystic lesions, which led to an erroneous diagnosis of hepatic mucinous cystadenoma or cystadenocarcinoma. PHNET with cystic lesions is extremely rare, and the features are not well studied. This case may help physicians suspect PHNET in a differential diagnosis of an atypical hepatic mass.

Lead compound optimization strategy (8) - drug transporters and related drug design strategies / 药学学报

Transporters have a great influence on the transportation and distribution of drugs in the body. On the one hand, solute carrier transporters could transport drugs into tissues and organs, which may improve the oral bioavailability or change the tissue-distribution of the drugs. On the other hand, the ATP-binding cassette could pump some drugs out of the cell, which decreases the intracellular drug concentrations and leads to drug resistance. This paper summarizes the distribution, substrate characteristics and drug design strategies of several important drug transporters, such as improving bioavailability by prodrug design, introducing acid group to improve hepatic selectivity and adjusting the polarity of compounds to decrease efflux ratio.

Effect of diabetes mellitus on long-term outcomes of surgical revascularization in patients with ischemic heart failure: a propensity score-matching study / 中华医学杂志(英文版)

BACKGROUND@#Diabetes mellitus (DM) is an important risk factor in the long-term outcomes of surgical revascularization. However, few studies have focused on patients with ischemic heart failure (IHF) and DM, and the results are controversial. This study aimed to evaluate the effect of DM on the long-term outcomes of IHF patients undergoing coronary artery bypass grafting (CABG).@*METHODS@#In this propensity-matched study, data of IHF patients who underwent CABG in our hospital from January 2007 to December 2017 were analyzed. With a mean 73-month follow-up time, the patients were divided into two groups according to whether they had DM. The primary endpoint was all-cause death, and the secondary endpoint was a composite of all-cause death, stroke, recurrent myocardial infarction, and revascularization.@*RESULTS@#There was no significant difference in all-cause mortality between the two groups (5.8% vs. 4.1%, P = 0.216). The incidence of main adverse cardiovascular and cerebrovascular events (MACCE) in the secondary endpoint was significantly higher in the DM group than that in the non-DM group (10.4% vs. 8.1%, P = 0.023).@*CONCLUSIONS@#DM can negatively affect the long-term outcomes of IHF patients undergoing CABG by significantly increasing the overall incidence of MACCE, though the long-term survival does not show a significant difference between the DM and non-DM patients.

Helicopter emergency medical services in Bayannur: case study / 中华医院管理杂志

Objective:To provide references for aeromedical rescue system development and rational resource allocation for such services, based on analysis of helicopter emergency medical service(HEMS) cases of Bayannur Hospital in Inner Mongolia.Methods:HEMS cases of Bayannur Hospital from 2018 to 2019 were studied, covering such data as patients′ age, gender, disease type, medical service modes, medical service area, and service time. Measurement data were expressed by ± s, and enumeration data were expressed by case number and ratio, while descriptive approach was used for analysis. Results:From 2018 to 2019, 178 patients in Bayannur used HEMS, respectively 39 cases in 2018 and 139 cases in 2019, including 32 cases(17.98%)of pre-hospital emergency care and 146 cases(82.02%) of inter-hospital transfer. The top 3 diseases of the disease spectrum were 73(41.01%) traumatic diseases, 44(24.72%) cardiovascular diseases, and 23(12.92%) neurological diseases.Conclusions:HEMS of Bayannur Hospital has played an important role in emergency medical service for the people in remote areas, and has become an essential method for constructing the air-ground cooperation emergency medical system in West China.

The clinical impact of gut microbiota in chronic kidney disease

Gut microorganisms play critical roles in both maintaining host homeostasis and the development of diverse diseases. Gut dysbiosis, an alteration of the composition and function of gut microorganisms, is commonly seen in patients with chronic kidney disease (CKD). CKD itself contributes to a disruption of the symbiotic relationship between the gut microbiota and the host, while the resulting gut dysbiosis may play a part in stage progression of CKD. This bidirectional relationship supports the concept that the gut microbiota is considered a novel focus for the pathogenesis and management of CKD. This article examines the interaction between the gut microbiota and the kidney, the mutual effects of dysbiosis and CKD, and possible treatment options to restore gut eubiosis, and reduce CKD progression and its related complications.

Changes of coagulation function in patients with adenomyosis and its clinical significance / 中华妇产科杂志

Objective:To measure the coagulation function of patients with adenomyosis so as to explore its relationship with increased menstrual amount and its clinical significance.Methods:From January 2014 to May 2019, clinical data of patients with hysterectomy in which 111 pathologically diagnosed adenomyosis (case group) and 115 with uterine myoma (control group) in Peking University First Hospital were retrospectively analyzed. The changes in coagulation function of the two groups were compared, and the correlation between coagulation and uterine volume in the adenomyosis group was analyzed.Results:(1) The activated partial thromboplastin time (APTT) was longer in the adenomyosis group than that in the uterine myoma group [(30.4±3.1), (29.6±2.5) s, respectively; P<0.05], while the thrombin time (TT) was shorter than that in the control group [(14.2±1.2), (14.6±1.0) s, respectively; P<0.05]. (2) According to the results of the Pearson correlation test, there was a positive correlation between prothrombin time (PT; r=0.135, P=0.042) and fibrinogen (FIB-C; r=0.139, P=0.036). (3) Platelet counts were higher in the anemia group of adenomyosis than that in the non-anemia group [(323±79)×10 9/L, (274±56)×10 9/L, respectively; P<0.05]. (4) FIB-C in non-anemia group of adenomyosis was lower than non-anemia group of uterine myoma [(2.8±0.5), (3.0±0.6) g/L, respectively; P<0.05], the anemia group of adenomyosis shortened TT compared with the anemia group of uterine myoma [(14.4±1.2), (15.2±0.9) s, respectively; P<0.05]. Conclusion:Patients with adenomyosis have abnormal coagulation function, which may be related to the increase amount of menstruation, and anemia may also be involved in coagulation disorders.

CCR5 deficiency in aged mice causes a decrease in bone mass

The CC chemokine receptor 5 (CCR5) is a G protein-coupled receptor that regulates chemotaxis and effector functions of immune cells. It also serves as the major co-receptor for the entry of human immunodeficiency virus (HIV). Recently, CCR5 inhibitors have been developed and used for the treatment or prevention of HIV infections. Additionally, it has been identified that CCR5 controls bone homeostasis by regulating osteoclastogenesis and the communication between osteoblasts and osteoclasts. However, the effects of CCR5 inhibition on bone tissue in elderly patients are unknown. This study aimed to examine the bone phenotype of aged CCR5 knockout (KO) mice. Femoral and tibial bones were isolated from 12-month and 18-month old wild-type (WT) and CCR5 KO mice, and microcomputed tomography and histology analyses were performed. Twelve-month-old CCR5 KO mice exhibited a decreased trabecular bone mass and cortical bone thickness in both femoral and tibial bones compared with age-matched WT mice. Eighteen-month-old mice also showed a decreased trabecular bone mass in femurs compared with control WT mice, but not in tibial bones. Unlike in 12-month-old mice, the cortical margin of femurs and tibias in 18-month-old mice were rough, likely because they were aggravated by the deficiency of CCR5. Overall, our data suggest that the deficiency of CCR5 with aging can cause severe bone loss. When CCR5 inhibitors or CCR5 inactivating technologies are used in elderly patients, a preventive strategy for bone loss should be considered.

Construction of a mutant strain of Nocardia farcinica with mce4A gene deletion and analysis of the role of mce4A gene / 中华微生物学和免疫学杂志

Objective To construct a mutant strain of Nocardia farcinica ( N. farcinica ) IFM10152 with mammalian cell entry 4A gene (mce4A) deletion and to analyze the function of that gene dur-ing infection. -ethods The mutant strain of N. farcinica was constructed through in-frame deletion without antibiotic labeling and verified by PCR and sequencing analysis. To analyze the function of mce4A gene in the interaction between N. farcinica and host cells, in vitro growth experiment, macrophage killing experi-ment using THP-1 ( a human leukemia mononuclear cell line) as the model and adhesion and invasion exper-iments using HeLa cells ( cervical cancer epithelial cells) were carried out. Results The mutant strain with mce4A gene deletion was successfully constructed and named △mce4A. No significant difference in growth rate was observed between the mutant and the wild-type strains. After knocking out the mce4A gene, the ability of N. farcinica to resist macrophage killing was obviously weakened as well as its ability to adhere and invade. Conclusions The mutant strain of N. farcinica with mce4A gene deletion was successfully construc-ted. The mce4A gene might play an important role in the adhesion and invasion of N. farcinica to host cells and its survival in macrophages.

Effects of parthenolide on estradiol?synthesizing enzyme, ER isoforms and VEGF in human endometriotic stromal cells / 中华妇产科杂志

Objective To evaluate the effects of parthenolide on estradiol?synthesizing enzyme, steroidogenic acute regulatory protein (StAR), and ER isoforms,VEGF in human endometriotic stromal cells. Methods Primary endometriotic stromal cells were treated with different concentrations (1, 5, 10 and 20 μmol/L) of parthenolide. The mRNA of StAR, ER isoforms (ERα and ERβ), PR, vascular endothelial growth factor (VEGF), interleukin?6 (IL?6), tumour necrosis factor?α (TNFα), tumour necrosis factor receptor (TNFR) 1, TNFR2 were measured by real?time PCR. The levels of estradiol and progesterone in the cell supernatant were measured by ELISA. Results Different concentrations of parthenolide could up?regulate the mRNA of StAR in primary endometriotic stromal cells (F=5.722, P<0.05); the mRNA of StAR in the group of 20 μmol/L was significantly higher than that of the control group [2.6 ± 0.3 versus 1.0, P<0.01]. Different concentrations of parthenolide could down?regulate the mRNA of ERα (F=6.921, P<0.01); the mRNA of ERα in the group of 20 μmol/L and 10 μmol/L were significantly lower than those of the control group [0.2 ± 0.3 versus 0.3 ± 0.3 versus 1.0, all P<0.05]. Different concentrations of parthenolide could down?regulate the ratios of ERα/ERβ mRNA levels (F=4.209, P<0.05). Different concentrations of parthenolide could up?regulate the mRNA of VEGF and TNFR1 (F=10.964, P<0.01; F=7.286, P<0.01). There were no statiscal significances with different concentrations of parthenolide on the mRNA of ERβ, PR, IL?6, TNFα and TNFR2, and the levels of estradiol and progesterone in the cell supernatant (all P>0.05). Conclusions Parthenolide may regulate the expression of estradiol?synthesizing enzyme, ER isoforms and angiogenesis in endometriotic stromal cells. Parthenolide may promote the development of endometriosis.