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Sun S, Que D, Pan B, Hu K. Pleomorphic hyalinizing angiectatic tumor originating in the nasal cavity: A CARE case report. Eur Ann Otorhinolaryngol Head Neck Dis 2024:S1879-7296(24)00077-2. [PMID: 38890073 DOI: 10.1016/j.anorl.2024.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 05/11/2024] [Accepted: 05/16/2024] [Indexed: 06/20/2024]
Abstract
INTRODUCTION Pleomorphic hyalinizing angiectatic tumor (PHAT) is a rare low-grade malignant mesenchymal neoplasm. It commonly occurs in the limbs and trunk, with limited occurrences in the head and neck region. Only five cases of PHAT occurring in the head and neck have been reported in the literature to date. The etiology of PHAT remains unclear. We described a case of nasal cavity PHAT following CARE guidelines. CASE SUMMARY A 32-year-old male with PHAT originating in the nasal cavity recurred after two surgeries. Adjuvant radiotherapy was performed after the third surgery. The patient has been regularly followed up for 36months, and no tumor recurrence or metastasis has been observed. DISCUSSION PHAT is a rare soft tissue tumor known for its local aggressiveness. Because of a high risk of recurrence, extensive resection should be implemented, possibly completed by radiotherapy if resection cannot be complete because of proximity to at-risk structures.
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Zhou BN, Liu X, Hu K. [Research status of glucagon-like peptide-1 receptor agonists on obstructive sleep apnea]. ZHONGHUA JIE HE HE HU XI ZA ZHI = ZHONGHUA JIEHE HE HUXI ZAZHI = CHINESE JOURNAL OF TUBERCULOSIS AND RESPIRATORY DISEASES 2024; 47:281-285. [PMID: 38448183 DOI: 10.3760/cma.j.cn112147-20230913-00155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Obstructive sleep apnea (OSA) is the most common sleep-disordered breathing disease. Continuous positive airway pressure (CPAP) is the gold standard for treatment, but compliance is suboptimal. Therefore, new therapeutic strategies need to be explored. OSA is often associated with multiple comorbidities, particularly type 2 diabetes and obesity. Effective weight loss is known to be crucial in reversing OSA and its associated comorbidities. However, sustained weight loss is difficult to achieve with lifestyle changes alone. Medications that have both hypoglycemic and weight-loss effects are one way to achieve this goal. This article discussed the therapeutic effect of glucagon-like peptide-1 receptor agonists on this disease.
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Zhuo F, Wang XJ, Cui WJ, Guo Y, Li JC, Zhang LN, Hu K, Chen M. [Comparative study of benign and malignant parotid gland tumors by infrared thermal imaging]. ZHONGHUA KOU QIANG YI XUE ZA ZHI = ZHONGHUA KOUQIANG YIXUE ZAZHI = CHINESE JOURNAL OF STOMATOLOGY 2023; 58:1027-1033. [PMID: 37818538 DOI: 10.3760/cma.j.cn112144-20230817-00089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 10/12/2023]
Abstract
Objective: To analyze the temperature difference of benign and malignant parotid gland tumors in preoperative infrared thermography (IRT), and to provide the basis for predicting tumor properties. Methods: The clinical data of 98 patients with parotid gland tumor admitted to the Department of Oral and maxillofacial Surgery of the First Affiliated Hospital of Bengbu Medical College, from May 2021 to April 2023 were retrospectively analyzed. There were 61 males and 37 females, aged (51.1±16.0) years (10-86 years). In addition to routine examination, the temperature difference between the lesion site of parotid gland and the contralateral mirror area was measured by infrared thermal imager in all patients one day before surgery. The maximum diameter (dmax) and location of the tumor (deep or superficial lobe) were recorded according to preoperative clinical examination and imaging examinations such as CT and ultrasound. The patients were divided into three groups by tumor size: dmax≤2 cm, 2 cm4 cm. The patients were also divided into different groups: deep lobe group and superficial lobe group (according to the tumor location), benign group and malignant group (according to postoperative pathological results). The relationship between temperature difference, pathology, size and location was analyzed. Results: There were 79 cases in the benign group and 19 cases in the malignant group. The temperature difference of the healthy and affected side in the malignant group [(1.73±0.21) ℃] was significantly higher than that in the benign group [(0.73±0.32) ℃] (t=16.70, P<0.001). There was no significant difference in temperature difference between the healthy and affected sides of tumors with different diameters (P>0.05). The temperature difference of healthy and affected side of tumor in superficial lobe [(0.97±0.50) ℃] was significantly higher than that in deep lobe [(0.67±0.44) ℃] (t=2.24, P=0.028). Conclusions: The difference of temperature difference between benign and malignant parotid gland tumors detected by IRT is statistically significant, which can be used to predict tumor properties, and has certain clinical application value.
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Zhou Y, Hu K, Zhang FQ. Adjuvant Concurrent Chemoradiotherapy vs. Radiotherapy Alone in Cervical Cancer Patients with Intermediate-Risk Factors after Radical Surgery. Int J Radiat Oncol Biol Phys 2023; 117:e560. [PMID: 37785718 DOI: 10.1016/j.ijrobp.2023.06.1877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) For early-stage cervical cancer patients with intermediate-risk factors, there is no consensus about whether postoperative concurrent chemoradiotherapy (CCRT) is superior to radiotherapy (RT) alone. MATERIALS/METHODS We retrospectively reviewed medical records of stage I-IIA cervical cancer patients underwent radical surgery and postoperative RT or CCRT from June 2012 to December 2017. Patients with any of the high-risk factors including positive pelvic lymph node, positive resection margin, and parametrial invasion were excluded. Patients with any of the intermediate-risk factors including large tumor size (≥4cm), deep stromal invasion (≥1/2), and lymphovascular space involvement were included. 1:1 propensity score matching was performed to balance baseline variables between patients receiving RT and CCRT. RESULTS A total of 350 patients were enrolled (84 underwent RT alone and 266 underwent CCRT). The median follow-up period was 50.4 months. For patients underwent RT alone and CCRT, the 5-year overall survival (OS) rates were 93.4% and 93.8% (p = 0.741), the 5-year disease-free survival (DFS) rates were 90.6% and 91.4% (p = 0.733), respectively. 83 pairs of patients were enrolled based on propensity score matching. Similarly, there was no significant difference between OS or DFS rates of those matched patients. For patients with single intermediate-risk factor who received RT alone (n = 58) and CCRT (n = 132), the 5-year OS rates were 94.2% and 95.7% (p = 0.636), the 5-year DFS rates were 92.8% and 94.1% (p = 0.637). For patients with multiple intermediate-risk factors who received RT alone (n = 26) and CCRT (n = 134), the 5-year OS rates were 91.8% and 91.7% (p = 0.761), the 5-year DFS rates were 85.4% and 88.4% (p = 0.717). The cox regression analysis also indicated that adjuvant CCRT or RT was not an independent prognostic factor for OS or DFS. Otherwise, patients underwent CCRT seemed to develop a higher proportion of grade 3 or higher acute hematologic toxicities than RT group (45.5% and 14.3%, p<0.001). CONCLUSION There was no significant difference in OS and DFS between cervical cancer patients with intermediate-risk factors receiving postoperative CCRT and RT alone. Patients underwent CCRT seemed to develop a higher proportion of severe hematologic toxicities than RT alone. To a certain extent, CCRT is not superior to RT alone for intermediate-risk patients.
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Yan Z, Wang W, Hou X, Ren K, Hu K, Zhang F. Timing of Postoperative Radiation Therapy for Early-Stage Endometrial Carcinoma: A 20-Year Single-Center Retrospective Cohort Experience in China. Int J Radiat Oncol Biol Phys 2023; 117:e555-e556. [PMID: 37785706 DOI: 10.1016/j.ijrobp.2023.06.1867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) To investigate the appropriate timing of radiotherapy (RT) after hysterectomy for women with early-stage endometrial carcinoma (EC). MATERIALS/METHODS Between 1999 and 2020, 1080 patients with I and II endometrial cancer received postoperative RT at our hospital. All patients underwent hysterectomy followed by RT. The optimal cut-off values for the surgery-RT interval (SRI) based on overall survival (OS) were determined using the R software. The disease-free survival (DFS), OS, locoregional recurrence free survival (LRFS), and distant metastasis free survival (DMFS) rates were estimated using the Kaplan-Meier method. Multivariate analyses were performed using Cox proportional hazards regression. RESULTS Median follow-up time was 52 months. Median SRI were 46 days. The optimal cut-off value for the surgery-RT interval (SRI) based on overall survival (OS) is 40 days. The group initiated RT within 40 days following surgery has higher OS (P = 0.004), higher LRFS (P = 0.002) and higher DMFS (P = 0.039). An SRI of ≤ 40 days was independently associated with higher OS (HR 0.454, 95% CI:0.261-0.788), higher LRFS (HR 0.487, 95% CI:0.304-0.779), and higher DMFS (HR 0.643, 95% CI:0.421-0.982) than SRI of >40 days. However, SRI had no significant effect on DFS. CONCLUSION The surgery-RT interval affects the patients' survival endpoints. Based on this analysis, the timing of the initiation of RT after hysterectomy is crucial for patients with early-stage endometrial carcinoma (EC). The postoperative radiation therapy for endometrial cancer should be initiated within 40 days following surgery.
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Wang W, Zhang FQ, Hu K. Weekly Image Guidance in Patients with Cervical Cancer Treated with Intensity Modulated Radiation Therapy: Results of a Large Cohort Study. Int J Radiat Oncol Biol Phys 2023; 117:e553. [PMID: 37785701 DOI: 10.1016/j.ijrobp.2023.06.1860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Given the motion of the cervix, uterus, and organs at risk, image guidance is recommended for patients undergoing intensity modulated radiation therapy (IMRT) for cervical cancer. However, daily image guidance can be resource intensive, particularly in developing countries. In this study, we evaluated the feasibility of a weekly image-guidance pattern and analyzed the long-term outcomes in a large cohort of patients. MATERIALS/METHODS The study enrolled patients with stage IB-IVA cervical cancer who received concurrent chemotherapy between 2005 and 2015. IMRT was delivered at a dose of 50.4 Gy in 28 fractions, with weekly cone-beam CT scans for image guidance. Following the image guidance, physicians would advise patients on the suitability of rectum and bladder preparation to help them prepare on non-imaging days. When significant tumor regression was observed, a second CT simulation and re-planning were performed. Intracavitary brachytherapy was delivered at a dose of 30 Gy in 5 fractions. The concurrent chemotherapy regimen consisted of weekly cisplatin. RESULTS A total of 1,433 patients were included in the study. The median follow-up periods for all patients and surviving patients were 63 months (ranging from 2 to 125 months) and 70 months (ranging from 3 to 125 months), respectively. The 5-year overall survival (OS), disease-free survival (DFS), and local control (LC) rates were 79.6%, 73.2%, and 86.5%, respectively. The estimated 8-year OS, DFS, and LC rates were 75.6%, 69.2%, and 85.2%, respectively. For patients with stage IB1, IB2, IIA, IIB, IIIA, IIIB, and IVA diseases (according to the 2014 FIGO staging system), the 5-year OS and DFS rates were 90.2% and 86.7%, 95.1% and 86.5%, 87.9% and 79.8%, 82.2% and 75.5%, 64.3% and 58.2%, 61.8% and 57.4%, and 43.8% and 19.4%, respectively. For patients with squamous cell carcinoma and adenocarcinoma, the 5-year DFS rates were 75.1% and 57.3%, respectively. For patients with positive regional lymph nodes, the 5-year OS and DFS rates were 64.1% and 57.8%, respectively. A total of 66 patients (4.6%) experienced grade 3-5 chronic toxicities, including 38 patients (2.7%) with gastrointestinal toxicities and 36 patients (2.5%) with genitourinary toxicities. CONCLUSION IMRT with weekly image guidance resulted in high survival rates and acceptable toxicities. This indicates that weekly image guidance is acceptable in countries with limited medical resources.
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Hou X, Sun S, Jiao S, Zhang J, Huang Y, Wang W, Hu K, Zhang F. Risk Stratification of Postoperative Adjuvant Therapy for Endometrial Cancer (POAT-ENDORISK) Based on Bayesian Network Model: A Development and Validation Study. Int J Radiat Oncol Biol Phys 2023; 117:e518. [PMID: 37785615 DOI: 10.1016/j.ijrobp.2023.06.1783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) To establish a Bayesian network (BN) model for postoperative adjuvant treatment of early endometrial carcinoma (EC) patients. MATERIALS/METHODS We retrospectively analyzed the data of 1280 early EC patients treated by multiple institutions in China from 1999 to 2017. All patients received primary hysterectomy/bilateral salpingo-oophorectomy and adjuvant radiotherapy. The FIGO 2009 stage of all patients is stage I and stage II EC, and the median age is 57 years old. All patients are grouped according to the ESMO-ESGO-ESTRO risk stratification. The clinicopathologic factors, treatment-related factors, local regional recurrence, distant metastasis and cancer-specific survival rate (CSS) of all patients were reviewed. We divide the original data set into training set and Validation set according to the ratio of 7:3. The training of the Bayesian network model is completed on Netica, and the test of the model effect is finally completed on the test set. RESULTS After variable screening, a total of 14 characteristic variables entered the final model. A total of 896 patients were used for the development of BN model, and 384 patients were used for the validation of BN model. The results of the model showed that the factors directly related to CSS were locoregional failure (LRF), radiotherapy mode, distant metastasis (DM). Factors directly related to DM were chemotherapy, LRF, CSS. The factors directly related to LRF were risk stratification, preoperative serum CA125 and preoperative HB. The accuracy, sensibility, specificity, micro-f1, micro-f1, weighted-f1 and AUC of BN model in predicting DM and CSS were better than XGBoost model. CONCLUSION In this study, we integrated almost all clinical pathology and treatment information related to postoperative adjuvant treatment of early EC patients and established a BN model for personalized clinical decision-making of postoperative adjuvant treatment of early EC patients. The results showed the complex correlation among the variables, and the overall prediction ability and visualization effect of BN model was significantly better than XGBoost model. Prospective research is needed before clinical implementation.
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Ren K, Wu H, Hou X, Hu K, Zhang F. Comparison of Molecular and Clinicopathologic-Based Classifications and the Transition of Adjuvant Treatment Mode for Early-Stage Endometrial Cancer. Int J Radiat Oncol Biol Phys 2023; 117:e539. [PMID: 37785666 DOI: 10.1016/j.ijrobp.2023.06.1831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Due to the division in classification strategies based on different molecular and clinicopathologic guidelines, the current emergence of multiple molecular typing methods greatly challenges the traditional classification-guided hierarchical treatment model. MATERIALS/METHODS The early-stage ECs who underwent a total hysterectomy and comprehensive molecular analyses were analyzed consecutively between May 2021 and December 2022. All enrolled patients were performed with immunohistochemistry for lymph-vascular space invasion (LVSI), p53, and mismatch repair (MMR) proteins, NGS-panel Sanger sequencing for POLE exonuclease domain, and TP53. The Proactive Molecular Risk Classifier for Endometrial Cancer (ProMisE) classifier and the ESGO/ESTRO/ESP guidelines with and without molecular character were respectively employed to reclassify the enrolled patients. Categorical variables of the risk-group shift were compared by Pearson's χ2 or two-sided Fisher's exact test. RESULTS A total of 81 early-stage ECs patients were enrolled. Molecular analyses identified four subgroups across the 81 ECs: 9 (11%) POLE mut, 22 (27.1%) MMRd, 38 (46.9%) NSMP, and 12 (14.8%) p53 abn. Compared with ESGO/ESTRO/ESP 2016 classifier, 26 (32.1%) and 23 (28.4%) patients in ESGO/ESTRO/ESP 2020 cohort with and without molecular classification, respectively, were risk-group downshifted (p>0.05). Ten (12.3%) patients were upshifted in ESGO/ESTRO/ESP 2020 molecular classification comparing to clinical classifier. Remarkably, two patients demonstrated discordance between the ProMisE and TCGA classifiers since the different sequences of classification strategies. On the other hand, 48 of 81 patients received adjuvant radiotherapy, and 12 patients received external beam radiation therapy (EBRT). According to the final molecular test, eight of 12 were classified into low and intermediate risk. CONCLUSION The treatment of endometrial cancer is in a period of transition from the clinicopathologic-based model to the era of molecular precision. Discordance between different classifiers and overtreatment remain in clinical practice. Therefore, we should be cautious about using molecular typing to guide adjuvant treatment decisions until it is finally validated in prospective trials.
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Kun Z, Shen J, Meng X, Yang B, Ma J, Hou X, Hu K, Zhang F. Dose DIBH Really Reduce the Subclinical Cardiac Acute Injury? Analysis of Clinical Real World from Our Institute. Int J Radiat Oncol Biol Phys 2023; 117:e189. [PMID: 37784820 DOI: 10.1016/j.ijrobp.2023.06.1050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) The study is aim to investigate whether Deep-inspirational breath-hold (DIBH), compared with free breathing (FB), could provide a short-term cardiac benefit in patients with early left breast cancer after breast-conserving surgery combined whole breast radiotherapy. MATERIALS/METHODS A total of 78 patients with early stage left breast cancer treated with radiotherapy between 2021-2022 after breast-conserving surgery were enrolled. Among them, 32 cases were treated with DIBH technique and 46 cases were treated with free breathing. Patients with previous cardiac disease such as coronary artery disease were excluded. We performed myocardial enzymes, ECG, and ECHO in all patients within 2 weeks before, during, and 6 months after radiotherapy. The results of the two groups were compared using nonparametric tests and chi-square tests, and P < 0.05 indicated statistical significance. Where subclinical acute cardiac injury was defined as new above-normal myocardial enzymes and/or electrocardiographic ST-T or T-wave changes and/or ECHO abnormalities after the start of radiotherapy. RESULTS The median follow-up of patients was 6 months and the mean age of patients was 52.3 years for FB and 44.9 years for DIBH. There were no significant differences in staging, molecular subtype, chemotherapy and endocrine therapy history. The proportion of subclinical acute cardiac injury was smaller in the DIBH group compared to the FB group (DIBH = 31/46 and FB = 28/32, p = 0.042). The most sensitive of the subclinical acute cardiac injury events were detected by myocardial enzymes rising, with cTnI (p = 0.034) and NT-proBNP (p = 0.023) appearing significantly lower in the DIBH patients during radiotherapy. The difference of cTnI between 2 groups at 6 months after radiotherapy became non-significant. In contrast, CK-MB was higher in DIBH compared with FB only 6 months after radiotherapy (p = 0.006). The differences in ECG and ECHO were not significant between the two groups. CONCLUSION After breast-conserving surgery combined with radiotherapy for left early breast cancer, DIBH compared to FB reduces the proportion of acute subclinical cardiac injury that occurs with the most sensitive changes in myocardial enzymes. Subsequent studies will explore the relationship between the short-term subclinical injury and irradiated dose, as well as long term cardiac injury.
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Wang W, Zhang FQ, Hu K. Poor Survival Outcomes in Patients with Stage IIIC2 Cervical Cancer Receiving Concurrent Chemoradiotherapy. Int J Radiat Oncol Biol Phys 2023; 117:e553. [PMID: 37785699 DOI: 10.1016/j.ijrobp.2023.06.1861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Patients with cervical cancer who have para-aortic lymph nodes metastasis are staged as IIIC2 according to the 2018 FIGO staging system. In this study, we evaluated the survival and toxicity outcomes of patients with stage IIIC2 cervical cancer who received concurrent chemoradiotherapy. MATERIALS/METHODS We included patients with stage IIIC2 cervical cancer who received definitive concurrent chemoradiotherapy at our institute between 2007 and 2015. The treatment consisted of intensity modulated radiation therapy (IMRT) delivering a dose of 50.4 Gy in 28 fractions to the pelvic and para-aortic lymph node regions, with escalated doses of 60-70 Gy for positive lymph nodes. A dose of 30 Gy in 5 fractions was delivered with intracavitary brachytherapy. The first-line chemotherapy regimen was weekly cisplatin. RESULTS A total of 88 patients were included in the study. The median follow-up periods for all patients and surviving patients were 20 months (range: 5-114 months) and 62 months (range: 5-114 months), respectively. The median survival was 20.9 months. The 1-year, 3-year, 5-year, and 8-year overall survival rates were 73.4%, 41.3%, 34.5%, and 25.3%, respectively, while the progression-free survival rates were 50.8%, 29.7%, 28.4%, and 21.2%. The local control rates were 58.6%, 52.2%, 52.2%, and 42.8%, respectively. Multivariate analysis showed that the number of positive para-aortic lymph nodes and histology type were independent factors affecting progression-free survival. The 5-year progression-free survival rates were 40.2% and 0% for patients with one and two or more positive para-aortic lymph nodes, respectively, and 30.1% and 21.4% for patients with squamous cell carcinoma and adenocarcinoma, respectively. Grade 3 or higher toxicities were observed in 8 patients (9.1%), including 4 patients (4.5%) with gastrointestinal toxicities and 4 patients (4.5%) with genitourinary toxicities. CONCLUSION The results of this study suggest that the survival outcomes of patients with stage IIIC2 cervical cancer receiving concurrent chemoradiotherapy were poor. Further treatment options, such as consolidation chemotherapy or immunotherapy, should be considered for these patients.
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Sun S, Sun X, Liang Y, Wang J, Sun Y, Wang Y, Liang H, Hu K, Zhang F, Lin FY, Liu Y, He SM, Zhang W. Clinical prior Knowledge-Based One-Shot Learning for Automatic Delineation of Clinical Target Volumes in Adaptation Radiotherapy of Cervical Cancer. Int J Radiat Oncol Biol Phys 2023; 117:e488. [PMID: 37785540 DOI: 10.1016/j.ijrobp.2023.06.2298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Rapid and accurate delineation of clinical target volumes (CTV) of cervical cancer is the crux to ensure the efficiency and benefits of adaptation radiotherapy (ART). However, contour propagation using deformation image registration (DIR) is difficult to ensure the accuracy of CTV contours due to the significant tumor recession in next fraction, and the tumor progress in each fraction is not considered by conventional automatic delineation methods based on deep learning (DL). Currently, one-shot learning (OSL) is feasible to learn the tumor progress from former fractions to improve the accuracy of automatically delineating CTV. MATERIALS/METHODS We retrospectively collected 45 patients with cervical cancer from January 2021 to May 2022 in our department. All patients consist of a pair of planning CT and daily CT in ART. A personalized automatic delineation method based on one-shot learning was developed to delineate CTV in daily CT by learning the clinical prior knowledge from the CTV contours and images of planning CT. The performance of our proposed method was evaluated by dice similarity coefficient (DSC), 95% Harsdorff distance (95HD) and average surface distance (ASD) with human experts, and its automatic delineation performance were compared with DIR and DL in daily CT. RESULTS Our automatic delineation method OSL performed the best results in all evaluation metrics (denoted by mean ± standard deviation) as shown in Table 1, it is superior to method DL: 0.92 & 0.90 of DSC, 2.33 mm & 2.68 mm of HD95, 0.68 mm & 0.82 mm of ASD, P < 0.05 for DSC and ASD. Specifically, our method is significantly superior to the automatic delineation results by method DIR: 0.92 & 0.84 of DSC, 2.33 mm & 4.11 mm of HD95, 0.68 mm & 1.52 mm of ASD, P < 0.05 for all. In addition, OSL can significantly overcome the delineation problems in fuzzy boundary and delineation missing and perform better generalization for some unusual images, compared with DIR and DL. CONCLUSION We proposed an automatic delineation method based on one-shot learning for CTV of cervical cancer in ART, the results demonstrated that the proposed method could improve the precision and generalization of automatically delineating CTV compared against current popular methods. Therefore, it is potential to improve the quality and efficiency of ART for personalized patients and have a positive impact on tumor control and patient survival.
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Wang W, Yan Z, Hou X, Ren K, Hu K, Zhang F. Mismatch Repair Status is an Effective Prognostic Factor for Early-Stage Endometrial Carcinoma. Int J Radiat Oncol Biol Phys 2023; 117:e553-e554. [PMID: 37785700 DOI: 10.1016/j.ijrobp.2023.06.1862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) This study is to evaluate the impact of mismatch repair (MMR) status on prognosis among patients with stage I to II (FIGO 2009) endometrial carcinoma (EC) treated with hysterectomy and adjuvant RT. MATERIALS/METHODS Between Oct. 2017 and Dec. 2020, patients with stage I to II (FIGO 2009) EC who had undergone hysterectomy followed by adjuvant RT in our institution were retrospectively reviewed. Clinical characteristics were compared between patients with proficient and deficient mismatch repair (pMMR and dMMR) using Pearson Chi-Square test for categorical variables. Kaplan-Meier method and log-rank test were used to compared overall survival (OS), disease-free survival (DFS), local-regional recurrence free survival (LRFS) and distant metastasis free survival (DMFS). Statistically significant difference was set as p<0.05. RESULTS Totally 276 stage I to II EC patients with known MMR status were included in this study. Among them, 211 patients were classified as pMMR while 65 patients were classified as dMMR. When compared to pMMR, patients with dMMR were more likely to have grade 3 and non-endometrioid type(37.8% vs. 20.8%, p = 0.014), lympho-vascular invasion (36.7% vs. 16.3%, p = 0.000), young age (<60) (28.6% vs. 17.2%, p = 0.027), HIR to HR classification(30.9% vs. 16.1%, p = 0.004). Of all the 276 patients, the median follow-up time was 31 months. Two-year DMFS was superior for pMMR compared to dMMR patients (96.3% vs. 95.0%, p = 0.048). Two-year DFS tended to be better for pMMR than dMMR patients with survival curves not crossed over each other (93.0% vs. 86.8%, p = 0.074). Two-year OS (98.9% vs. 98.4%, p = 0.716) and LRFS (96.3% vs. 95.0%, p = 0.815) were not different between pMMR/dMMR patients. For HIR to HR group, we reached the similar conclusion while for LR to IR group, survival statistics were not different between pMMR/dMMR patients. As to failure pattern, dMMR were more likely to have distant failure while local and regional failure were not different between the two groups. CONCLUSION For stage I to II EC, patients with dMMR have poorer DMFS and DFS compared to pMMR patients especially in HIR to HR risk classification. The combination of MMR status and other clinical and pathological factors may establish a new prognostic model and form a new risk stratification system.
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Shen J, Tao YJ, Zhikai L, Hou X, Yan J, Hu K, Zhang F. Postoperative Radiotherapy to Abdominal and Pelvic Lymphatic Drainage Area for Stage III Epithelial Ovarian Cancer: A Sharp Tool to Prolong Disease-Free Survival Time. Int J Radiat Oncol Biol Phys 2023; 117:S130-S131. [PMID: 37784336 DOI: 10.1016/j.ijrobp.2023.06.479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) For patients with stage III epithelial ovarian cancer, there are limited studies on the effects of postoperative adjuvant radiotherapy (RT) after standard cytoreductive surgery (CRS) and full treatment of first-line adjuvant chemotherapy (CT). The aims of our study were to assess the therapeutic efficacy and toxicity of our special postoperative radiotherapy to abdominal and pelvic lymphatic drainage area for stage III epithelial ovarian cancer patients. MATERIALS/METHODS We retrospectively collected patients with stage III epithelial ovarian cancer after CRS and full-course adjuvant chemotherapy. The CT+RT group patients were treated with intensity modulated radiotherapy (IMRT) to abdominal and pelvic lymphatic drainage area (which has been shown to be an alternative to whole abdominal radiotherapy (WART) both on the basis of clinical result and dosimetric verification from our prior study). The CT group data was obtained from the PUMCH's electronic medical record analytical database between 2010 and 2020. A propensity score matching analysis was performed 1:2 between CT+RT group and CT group. RESULTS A total of 132 patients with median follow-up of 73.9 months (9.1-137.7 months) were included (44 and 88 for the CT+RT and CT groups, retrospectively). The baseline characteristics of age, histology, level of CA12-5, surgical staging, residual tumor, courses of adjuvant CT, and courses to reduce CA12-5 to normal were all balanced. The median disease-free survival (DFS) time, 5-year overall survival (OS), and local recurrence free survival (LRFS) of CT+RT group and CT group were 100.0 months versus 25.9 months (p = 0.020), 69.2% versus 49.9% (p = 0.002), 85.9% versus 50.5% (p = 0.020), respectively. Distant metastasis was still the primary reason (57.6%), and local failure rate was 42.3%, the local recurrence rate was significantly lower in CT+RT group, compared with CT group (13.6% versus 45.5%, p = 0.016). In terms of toxicity, CT+RT group mainly presented with acute hematological toxicities, with no statistically significant difference with CT group when compared with grade III intestinal adverse effects (3/44 versus 6/88, p = 0.480). CONCLUSION This report demonstrates that long-term disease-free survival could be achieved in stage III epithelial ovarian cancer patients treated with IMRT preventive radiation to abdominal and pelvic lymphatic area. Compared with CT group, DFS and OS were significantly prolonged and adverse effects were acceptable.
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Qian L, Li N, Lu XC, Xu M, Liu Y, Li K, Zhang Y, Hu K, Qi YT, Yao J, Wu YL, Wen W, Huang S, Chen ZJ, Yin M, Lei QY. Enhanced BCAT1 activity and BCAA metabolism promotes RhoC activity in cancer progression. Nat Metab 2023; 5:1159-1173. [PMID: 37337119 DOI: 10.1038/s42255-023-00818-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 05/05/2023] [Indexed: 06/21/2023]
Abstract
Increased expression of branched-chain amino acid transaminase 1 or 2 (BCAT1 and BCAT2) has been associated with aggressive phenotypes of different cancers. Here we identify a gain of function of BCAT1 glutamic acid to alanine mutation at codon 61 (BCAT1E61A) enriched around 2.8% in clinical gastric cancer samples. We found that BCAT1E61A confers higher enzymatic activity to boost branched-chain amino acid (BCAA) catabolism, accelerate cell growth and motility and contribute to tumor development. BCAT1 directly interacts with RhoC, leading to elevation of RhoC activity. Notably, the BCAA-derived metabolite, branched-chain α-keto acid directly binds to the small GTPase protein RhoC and promotes its activity. BCAT1 knockout-suppressed cell motility could be rescued by expressing BCAT1E61A or adding branched-chain α-keto acid. We also identified that candesartan acts as an inhibitor of BCAT1E61A, thus repressing RhoC activity and cancer cell motility in vitro and preventing peritoneal metastasis in vivo. Our study reveals a link between BCAA metabolism and cell motility and proliferation through regulating RhoC activation, with potential therapeutic implications for cancers.
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Yue F, Yang HZ, Hao YY, Chen H, Zhang JY, Hu K. [A long-term follow-up study of noninvasive positive pressure ventilation on all-cause mortality in patients with chronic obstructive pulmonary disease-obstructive sleep apnea overlap syndrome]. ZHONGHUA JIE HE HE HU XI ZA ZHI = ZHONGHUA JIEHE HE HUXI ZAZHI = CHINESE JOURNAL OF TUBERCULOSIS AND RESPIRATORY DISEASES 2023; 46:373-379. [PMID: 36990701 DOI: 10.3760/cma.j.cn112147-20220808-00663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
Objective: To investigate the effect of noninvasive positive pressure ventilation(NIPPV) on all-cause mortality in patients with chronic obstructive pulmonary disease-obstructive sleep apnea overlap syndrome(OVS) through long-term follow-up. Methods: A total of 187 OVS patients were divided into the NIPPV group(n=92) and the non-NIPPV group(n=95). Of these, 85 males and 7 females were in the NIPPV group with an average age of (66.5±8.5) years(range 47-80 years); 89 males and 6 females were in the non-NIPPV group with an average age of (67.4±7.8) years(range 44-79 years). Follow-up was performed from enrolment with an average duration of 39(20, 51) months. The all-cause mortality was compared between the two groups. Result: There were no significant differences in their baseline clinical characteristics(all P>0.05), indicating that the data from the two groups were comparable. The Kaplan-Meier curve showed no difference in all-cause mortality between the two groups(log rank P=0.229). However, deaths from cardio-cerebrovascular diseases were higher in the non-NIPPV than in the NIPPV group(15.8% vs. 6.5%,P=0.045). Age, BMI, neck circumference, PaCO2, FEV1, FEV1%, moderate to severe OSA(AHI>15 events/h), mMRC, CAT, number of acute exacerbations of COPD and number of hospitalizations were associated with all-cause death in OVS patients; among which, age(HR 1.067, 95%CI 1.017-1.119, P=0.008), FEV1(HR 0.378, 95%CI 0.176-0.811, P=0.013), and number of COPD exacerbations(HR 1.298, 95%CI 1.102-1.530, P=0.002) were independent risk factors for all-cause mortality in OVS patients. Conclusions: The combination of NIPPV and conventional treatment may reduce cardio-cerebrovascular disease-related mortality in OVS patients. The deceased OVS patients had severe airflow limitation and mild to moderate OSA. Old age, low FEV1 and COPD exacerbations were independent risk factors for all-cause mortality in OVS patients.
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Gu Z, Hu K, Liang Y, Zhang F, Tong A, Hou X. Favorable outcome in advanced pheochromocytoma and paraganglioma after hypofractionated intensity modulated radiotherapy. J Endocrinol Invest 2023; 46:477-485. [PMID: 36121637 DOI: 10.1007/s40618-022-01908-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Accepted: 08/19/2022] [Indexed: 10/14/2022]
Abstract
PURPOSE The purpose of this study was to review outcomes of patients with advanced/metastatic pheochromocytoma/paraganglioma (PPGL) treated at our institution with Intensity-modulated radiotherapy (IMRT), describe the treatment outcomes, and determine predictors. METHODS A retrospective study on patients with advanced/metastatic PPGL who received IMRT at Peking Union Medical College Hospital between 2014 and 2019. A total of 14 patients with 17 lesions were included in this study. Ultra-hypofractionated radiation therapy was used for 7 lesions in 5 patients, while hypofractionated radiation therapy was used for 8 lesions in 7 patients. 2 patients got conventional fractionated radiotherapy. Patients who received external beam radiation therapy were given a median total radiation dose of 74.4/130 Gy (BED10/3) in a median of 13 fractions. RESULTS OS at 2 years was 78% for all patients. For lesions evaluated by RECIST response, at least stable disease of the target lesion was achieved in 94% and distant progression in 28.5%, with an average time to progression of 5.2 months. Patients with locally advanced primary tumors or recurred in situ (n = 8) achieved 100% local control, and none of them got recurrence or distant metastasis after radiotherapy at last follow-up (median 29 months). Of patients with catecholamine-related syndromes (n = 12), 91% of symptomatic lesions improved following radiation therapy and a more than 50% decline in catecholamines. CONCLUSIONS We have found hypofractionated IMRT effective as an additional therapy for patients with advanced primary tumors or recurrence in situ and not amenable to complete surgical resection.
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Tang XY, Liu CY, Chu GP, Li XX, Hu K, Zhao P, Lyu GZ. [Effects of porcine urinary bladder matrix on motility and polarization of bone marrow-derived macrophages in mice]. ZHONGHUA SHAO SHANG YU CHUANG MIAN XIU FU ZA ZHI 2023; 39:25-34. [PMID: 36740423 DOI: 10.3760/cma.j.cn501225-20220516-00187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Objective: To explore the effects of porcine urinary bladder matrix (UBM) on the motility and polarization of bone marrow-derived macrophages in mice, so as to provide evidence for the rational selection of stent in clinical wound repair. Methods: The method of experimental research was used. The microstructure of porcine UBM and absorbable dressing was observed under scanning electron microscope. Polyacrylamide gel electrophoresis was used to observe the protein distribution of the two stent extracts. The primary macrophages were induced from bone marrow-derived cells isolated from six 6-8-week-old male C57BL/6J mice (mouse age, sex, and strain, the same below) and identified. Three batches of macrophages were divided into porcine UBM extract group and absorbable dressing extract group. The cells in each group were cultured with Dulbecco's modified Eagle medium/F12 medium containing the corresponding extracts. The cell migration rate was detected and calculated on 1, 3, and 7 d after scratching by scratch test. The number of migrated cells at 12 and 24 h of culture was detected by Transwell experiment. The percentages of CD206 and CD86 positive cells at 24 h of culture was detected by flow cytometer. The numbers of sample in the above cell experiments were all 3. An incision was prepared on the left and right back of twelve mice, respectively. The left incision of each mouse was included in porcine UBM group and the right incision was included in absorbable dressing group, and the corresponding stents were implanted into the incisions respectively. On post operation day (POD) 7 and 14, the number of inflammatory cells infiltrated in the stent was detected by hematoxylin-eosin staining; the number of F4/80, transforming growth factor-β1 (TGF-β1), vascular endothelial growth factor (VEGF), and matrix metalloprotein-9 (MMP-9) positive cells and type Ⅰ collagen deposition in stents were observed by immunohistochemistry; the percentages of F4/80, CD86, and CD206 positive cells were observed by immunofluorescence staining. The numbers of sample in the above animal experiments were all 6. Data were statistically analyzed with analysis of variance for factorial design, analysis of variance for repeated measurement, and independent sample t test. Results: Porcine UBM has a dense basement membrane structure on one side and porous propria containing a fibrous structures on the other. Both sides of the absorbable dressing had three-dimensional porous structure. In the molecular weight range of (50-70)×103, multiple non-type Ⅰ collagen bands appeared in the lanes of porcine UBM extract, while no obvious bands appeared in the lanes of absorbable dressing extract. It had been identified that mouse bone marrow-derived cells had been successfully induced into macrophages. The cell migration rates in porcine UBM extract group were significantly higher than those in absorbable dressing extract group on 1, 3, and 7 d after scratching (with t values of 15.31, 19.76, and 20.58, respectively, P<0.05). The numbers of migrated cells in porcine UBM extract group were significantly more than those in absorbable dressing extract group at 12 and 24 h of culture (with t values of 12.20 and 33.26, respectively, P<0.05). At 24 h of culture, the percentage of CD86 positive cells in porcine UBM extract group ((1.27±0.19)%) was significantly lower than (7.34±0.14)% in absorbable dressing extract group (t=17.03, P<0.05);the percentage of CD206 positive cells in porcine UBM extract group was (73.4±0.7)%, significantly higher than (32.2±0.5)% in absorbable dressing extract group (t=119.10, P<0.05). On POD 7 and 14, the numbers of inflammatory cells infiltrated in the stents in porcine UBM group was significantly more than those in absorbable dressing group (with t values of 6.58 and 10.70, respectively, P<0.05). On POD 7 and 14, the numbers of F4/80, TGF-β1, VEGF, and MMP-9 positive cells in the stents in porcine UBM group were significantly more than those in absorbable dressing group (with t values of 46.11, 40.69, 13.90, 14.15, 19.79, 32.93, 12.16, and 13.21, respectively, P<0.05); type Ⅰ collagen deposition in the stents in porcine UBM group was more pronounced than that in absorbable dressing group; the percentages of CD206 positive cells in the stents in porcine UBM group were significantly higher than those in absorbable dressing group (with t values of 5.05 and 4.13, respectively, P<0.05), while the percentages of CD86 positive cells were significantly lower than those in absorbable dressing group (with t values of 20.90 and 19.64, respectively, P<0.05), and more M2-type macrophages were seen in the stents in porcine UBM group and more M1-type macrophages were seen in the stents in absorbable dressing group. Conclusions: Porcine UBM can enhance macrophage motility, induce M2 polarization and paracrine function, create a microenvironment containing growth factors such as TGF-β1 and MMP-9 tissue remodeling molecules, and promote tissue regeneration and extracellular matrix remodeling in mice.
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Li K, Liu Y, Ding Y, Zhang Z, Feng J, Hu J, Chen J, Lian Z, Chen Y, Hu K, Chen Z, Cai Z, Liu M, Pang X. BCL6 is regulated by the MAPK/ELK1 axis and promotes KRAS-driven lung cancer. J Clin Invest 2022; 132:161308. [PMID: 36377663 PMCID: PMC9663163 DOI: 10.1172/jci161308] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 09/13/2022] [Indexed: 11/16/2022] Open
Abstract
Mutational activation of KRAS is a common oncogenic event in lung cancer, yet effective therapies are still lacking. Here, we identify B cell lymphoma 6 (BCL6) as a lynchpin in KRAS-driven lung cancer. BCL6 expression was increased upon KRAS activation in lung tumor tissue in mice and was positively correlated with the expression of KRAS-GTP, the active form of KRAS, in various human cancer cell lines. Moreover, BCL6 was highly expressed in human KRAS-mutant lung adenocarcinomas and was associated with poor patient survival. Mechanistically, the MAPK/ERK/ELK1 signaling axis downstream of mutant KRAS directly regulated BCL6 expression. BCL6 maintained the global expression of prereplication complex components; therefore, BCL6 inhibition induced stalling of the replication fork, leading to DNA damage and growth arrest in KRAS-mutant lung cancer cells. Importantly, BCL6-specific knockout in lungs significantly reduced the tumor burden and mortality in the LSL-KrasG12D/+ lung cancer mouse model. Likewise, pharmacological inhibition of BCL6 significantly impeded the growth of KRAS-mutant lung cancer cells both in vitro and in vivo. In summary, our findings reveal a crucial role of BCL6 in promoting KRAS-addicted lung cancer and suggest BCL6 as a therapeutic target for the treatment of this intractable disease.
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Feng J, Lian Z, Xia X, Lu Y, Hu K, Zhang Y, Liu Y, Hu L, Yuan K, Sun Z, Pang X. Targeting metabolic vulnerability in mitochondria conquers MEK inhibitor resistance in KRAS-mutant lung cancer. Acta Pharm Sin B 2022; 13:1145-1163. [PMID: 36970205 PMCID: PMC10031260 DOI: 10.1016/j.apsb.2022.10.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 08/18/2022] [Accepted: 09/23/2022] [Indexed: 11/01/2022] Open
Abstract
MEK is a canonical effector of mutant KRAS; however, MEK inhibitors fail to yield satisfactory clinical outcomes in KRAS-mutant cancers. Here, we identified mitochondrial oxidative phosphorylation (OXPHOS) induction as a profound metabolic alteration to confer KRAS-mutant non-small cell lung cancer (NSCLC) resistance to the clinical MEK inhibitor trametinib. Metabolic flux analysis demonstrated that pyruvate metabolism and fatty acid oxidation were markedly enhanced and coordinately powered the OXPHOS system in resistant cells after trametinib treatment, satisfying their energy demand and protecting them from apoptosis. As molecular events in this process, the pyruvate dehydrogenase complex (PDHc) and carnitine palmitoyl transferase IA (CPTIA), two rate-limiting enzymes that control the metabolic flux of pyruvate and palmitic acid to mitochondrial respiration were activated through phosphorylation and transcriptional regulation. Importantly, the co-administration of trametinib and IACS-010759, a clinical mitochondrial complex I inhibitor that blocks OXPHOS, significantly impeded tumor growth and prolonged mouse survival. Overall, our findings reveal that MEK inhibitor therapy creates a metabolic vulnerability in the mitochondria and further develop an effective combinatorial strategy to circumvent MEK inhibitors resistance in KRAS-driven NSCLC.
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Chen RX, Sun YX, Liu XN, Shao C, Huang H, Hu K, Xu J, Li J, Yi X, Zhang ZJ, Xu Z. [Host factors and characteristics of hospitalized patients with pneumocystis jirovecii pneumonia]. ZHONGHUA JIE HE HE HU XI ZA ZHI = ZHONGHUA JIEHE HE HUXI ZAZHI = CHINESE JOURNAL OF TUBERCULOSIS AND RESPIRATORY DISEASES 2022; 45:881-887. [PMID: 36097925 DOI: 10.3760/cma.j.cn112147-20220303-00170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objectives: To describe the underlying diseases, microbiologic examination and severity of hospitalized patients with Pneumocystis jirovecii pneumonia (PJP) in a tertiary Chinese hospital. Methods: We conducted a retrospective analysis of 485 identified PJP patients who were admitted to our hospital between January 2013 and December 2021. Results: Among the 485 enrolled PJP cases, there were 237 males and 248 females, aging (53.3±16.2) years (range from 14 y to 88 y). They were divided into 8 subgroups with variable underlying diseases. There were 209 cases with connective tissue diseases(CTD), 27 cases with non-hematologic malignancies, 38 cases with hematologic malignancies, 81 cases with kidney diseases, 33 cases with idiopathic interstitial pneumonia(IIP), 30 cases infected with human immunodeficiency virus (HIV), and 42 cases with miscellaneous underlying diseases. In the CTD group, there was more females than males, while male patients were predominant in both the malignant and the HIV groups. The Pneumocystis was identified in 44.95%(218/485) sputum samples and 92.01%(265/288) bronchoscopic samples. Pneumocystis asci were observed at direct microscopic examination with Grocott's methenamine silver stain in 4.95%(24/485)sputum samples and 9.72%(28/288)bronchoscopic samples. Pneumocystis DNA fragments were identified by PCR analysis in 43.09%(209/485)sputum samples and 90.63%(261/288)bronchoscopic samples. Among the 8 groups, cytomegaviremia and respiratory failure were most common in the HIV-infected PJP group, but the rates of mechanic ventilation, intensive care unit (ICU) admission and death were the lowest. There were less PJP patients in the IIP group (IIP-PJP) who received mechanic ventilation and admitted to ICU than the other groups except HIV-infected PJP group. However, the mortality rate was highest for the IIP-PJP group. Conclusions: CTD was the most common predisposed underlying disease for our enrolled PJP cases. Cytomegaviremia and respiratory failure were common in HIV-infected PJP patients, but the prognosis of HIV-PJP was slightly better than the others. The disease was more severe, rapidly progressive and fatal in the IIP-PJP group.
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Chen RX, Liu XN, Shao C, Huang H, Hu K, Xu J, Li X, Zhang ZJ, Xu Z. [Clinical analysis of autoimmune diseases associated with interstitial lung diseases initially presented with idiopathic pulmonary fibrosis]. ZHONGHUA JIE HE HE HU XI ZA ZHI = ZHONGHUA JIEHE HE HUXI ZAZHI = CHINESE JOURNAL OF TUBERCULOSIS AND RESPIRATORY DISEASES 2022; 45:775-782. [PMID: 35927048 DOI: 10.3760/cma.j.cn112147-20220417-00327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objectives: To describe the clinical characteristics of patients with autoimmune diseases associated interstitial lung diseases (AID-ILD) initially presented with idiopathic pulmonary fibrosis (IPF) in a tertiary Chinese hospital. Methods: We conducted a retrospective analysis of 14 patients diagnosed with AID-ILD during the IPF follow-up between January 2016 and December 2021. Among the 14 enrolled AID-ILD cases, there were 13 males and 1 female, (69.71±9.07) years old (range from 55 y to 87 y). Results: Detailed clinical consultation and further laboratory analysis were performed during the follow-up when the IPF patients showed exaggerated dyspnea (7 cases), fever of unknown causes (6 cases), microscopic hematuria (5 cases), arthralgia and swelling (4 cases), arthralgia (2 cases), morning stiffness (2 cases) and renal failure (2 cases). Finally, 6 patients showed positive MPO-ANCA, one patient showed positive PR3-ANCA and 7 patients showed positive anti-CCP. During the IPF periods, 7 patients had received antifibrotic agents and 5 patients had been prescribed with N-acetylcysteine, and 1 patient had received antifibrotic agents after N-acetylcysteine. Among them, no medication was prescribed for one IPF patient. After they were diagnosed with AID-ILD, glucocorticoids and/or immunosuppressants were added for 13 of them. Thirteen of cases improved or stable after these treatments, but one didn't show significant changes. Conclusions: AID-UIP, especially ANCA-UIP, AAV-UIP or RA-UIP should be considered when the IPF patients showed fever of unknown origin, microscopic hematuria and/or arthritis related symptoms. They might benefit from the add-on glucocorticoids and/or immunosuppressants.
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Qi P, Chen YK, Cui RL, Heng RJ, Xu S, He XY, Yue AM, Kang JK, Li HH, Zhu YX, Wang C, Chen YL, Hu K, Yin YY, Xuan LX, Song Y. [Overexpression of NAT10 induced platinum drugs resistance in breast cancer cell]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 2022; 44:540-549. [PMID: 35754228 DOI: 10.3760/cma.j.cn112152-20211231-00986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To observe the platinum drugs resistance effect of N-acetyltransferase 10 (NAT10) overexpression in breast cancer cell line and elucidate the underlining mechanisms. Methods: The experiment was divided into wild-type (MCF-7 wild-type cells without any treatment) group, NAT10 overexpression group (H-NAT10 plasmid transfected into MCF-7 cells) and NAT10 knockdown group (SH-NAT10 plasmid transfected into MCF-7 cells). The invasion was detected by Transwell array, the interaction between NAT10 and PARP1 was detected by co-immunoprecipitation. The impact of NAT10 overexpression or knockdown on the acetylation level of PARP1 and its half-life was also determined. Immunostaining and IP array were used to detect the recruitment of DNA damage repair protein by acetylated PARP1. Flow cytometry was used to detect the cell apoptosis. Results: Transwell invasion assay showed that the number of cell invasion was 483.00±46.90 in the NAT10 overexpression group, 469.00±40.50 in the NAT10 knockdown group, and 445.00±35.50 in the MCF-7 wild-type cells, and the differences were not statistically significant (P>0.05). In the presence of 10 μmol/L oxaliplatin, the number of cell invasion was 502.00±45.60 in the NAT10 overexpression group and 105.00±20.50 in the NAT10 knockdown group, both statistically significant (P<0.05) compared with 219.00±31.50 in wild-type cells. In the presence of 10 μmol/L oxaliplatin, NAT10 overexpression enhanced the binding of PARP1 to NAT10 compared with wild-type cells, whereas the use of the NAT10 inhibitor Remodelin inhibited the mutual binding of the two. Overexpression of NAT10 induced PARP1 acetylation followed by increased PARP1 binding to XRCC1, and knockdown of NAT10 expression reduced PARP1 binding to XRCC1. Overexpression of NAT10 enhanced PARP1 binding to LIG3, while knockdown of NAT10 expression decreased PARP1 binding to LIG3. In 10 μmol/L oxaliplatin-treated cells, the γH2AX expression level was 0.38±0.02 in NAT10 overexpressing cells and 1.36±0.15 in NAT10 knockdown cells, both statistically significant (P<0.05) compared with 1.00±0.00 in wild-type cells. In 10 μmol/L oxaliplatin treated cells, the apoptosis rate was (6.54±0.68)% in the NAT10 overexpression group and (12.98±2.54)% in the NAT10 knockdown group, both of which were statistically significant (P<0.05) compared with (9.67±0.37)% in wild-type cells. Conclusion: NAT10 overexpression enhances the binding of NAT10 to PARP1 and promotes the acetylation of PARP1, which in turn prolongs the half-life of PARP1, thus enhancing PARP1 recruitment of DNA damage repair related proteins to the damage sites, promoting DNA damage repair and ultimately the survival of breast cancer cells.
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McKay PF, Zhou J, Frise R, Blakney AK, Bouton CR, Wang Z, Hu K, Samnuan K, Brown JC, Kugathasan R, Yeow J, Stevens MM, Barclay WS, Tregoning JS, Shattock RJ. Polymer formulated self-amplifying RNA vaccine is partially protective against influenza virus infection in ferrets. OXFORD OPEN IMMUNOLOGY 2022; 3:iqac004. [PMID: 35996628 PMCID: PMC9384352 DOI: 10.1093/oxfimm/iqac004] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 05/03/2022] [Accepted: 06/13/2022] [Indexed: 11/16/2022] Open
Abstract
COVID-19 has demonstrated the power of RNA vaccines as part of a pandemic response toolkit. Another virus with pandemic potential is influenza. Further development of RNA vaccines in advance of a future influenza pandemic will save time and lives. As RNA vaccines require formulation to enter cells and induce antigen expression, the aim of this study was to investigate the impact of a recently developed bioreducible cationic polymer, pABOL for the delivery of a self-amplifying RNA (saRNA) vaccine for seasonal influenza virus in mice and ferrets. Mice and ferrets were immunized with pABOL formulated saRNA vaccines expressing either haemagglutinin (HA) from H1N1 or H3N2 influenza virus in a prime boost regime. Antibody responses, both binding and functional were measured in serum after immunization. Animals were then challenged with a matched influenza virus either directly by intranasal inoculation or in a contact transmission model. While highly immunogenic in mice, pABOL-formulated saRNA led to variable responses in ferrets. Animals that responded to the vaccine with higher levels of influenza virus-specific neutralizing antibodies were more protected against influenza virus infection. pABOL-formulated saRNA is immunogenic in ferrets, but further optimization of RNA vaccine formulation and constructs is required to increase the quality and quantity of the antibody response to the vaccine.
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Zhang XK, Sun AJ, Hu K, Ge JB. [Application prospects of mRNA vaccines in cardiovascular diseases]. ZHONGHUA XIN XUE GUAN BING ZA ZHI 2022; 50:514-519. [PMID: 35589603 DOI: 10.3760/cma.j.cn112148-20210623-00542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
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Siddiqi U, Belkin M, Li G, Hoang R, Hu K, Jeevanandam V, Pinney S. Panel-Reactive Antibody Associated with Acute Rejection Episodes After Heart Transplantation: An Analysis of the UNOS Database. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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