Objective To predict the lymph node metastasis status of patients with invasive pulmonary adenocarcinoma by constructing machine learning models based on primary tumor radiomics, peritumoral radiomics, and habitat radiomics, and to evaluate the predictive performance and generalization ability of different imaging features. Methods A retrospective analysis was performed on the clinical data of 1 263 patients with invasive pulmonary adenocarcinoma who underwent surgery at the Department of Thoracic Surgery, Jiangsu Province Hospital, from 2016 to 2019. Habitat regions were delineated by applying K-means clustering (average cluster number of 2) to the grayscale values of CT images. The peritumoral region was defined as a uniformly expanded area of 3 mm around the primary tumor. The primary tumor region was automatically segmented using V-net combined with manual correction and annotation. Subsequently, radiomics features were extracted based on these regions, and stacked machine learning models were constructed. Model performance was evaluated on the training, testing, and internal validation sets using the area under the receiver operating characteristic curve (AUC), F1 score, recall, and precision. Results After excluding patients who did not meet the screening criteria, a total of 651 patients were included. The training set consisted of 468 patients (181 males, 287 females) with an average age of (58.39±11.23) years, ranging from 29 to 78 years, the testing set included 140 patients (56 males, 84 females) with an average age of (58.81±10.70) years, ranging from 34 to 82 years, and the internal validation set comprised 43 patients (14 males, 29 females) with an average age of (60.16±10.68) years, ranging from 29 to 78 years. Although the habitat radiomics model did not show the optimal performance in the training set, it exhibited superior performance in the internal validation set, with an AUC of 0.952 [95%CI (0.87, 1.00)], an F1 score of 84.62%, and a precision-recall AUC of 0.892, outperforming the models based on the primary tumor and peritumoral regions. Conclusion The model constructed based on habitat radiomics demonstrated superior performance in the internal validation set, suggesting its potential for better generalization ability and clinical application in predicting lymph node metastasis status in pulmonary adenocarcinoma.

Objective To explore the protective mechanism of baicalin regulating NOD like receptor thermal protein domain associated protein 3(NLRP3)inflammasomes against acne.Methods Compound acne models were prepared by intradermal injection of Propionibacterium acnes into the auricle.Rats were randomly divided into control group(normal rats were given physiological saline by gavage),model group(acne model rats were given physiological saline by gavage),experimental-L,-M,-H groups(acne model rats were given 25,50,and 100 mg·kg-1 of baicalin by gavage),and positive control group(acne model rats were given 3.125 mg·kg-1 of isotretinoin by gavage),with 10 rats in each group.Observe the morphology of rat auricles;enzyme linked immunosorbent assay(ELISA)was used to detect the level of inflammation in serum;hematoxylin-eosin staining was used to detect pathological changes in rat auricle tissue;Western blotting was used to detect the protein expression level in the auricle tissue.Results After drug treatment,the auricular thickness of rats in the control,model,experimental-H and positive control groups were(0.42±0.05),(0.75±0.10),(0.49±0.05)and(0.50±0.05)mm;the serum levels of tumor necrosis factor-α were(20.46±2.13),(62.32±5.47),(23.27±2.26)and(25.41±2.28)pg·mL-1;interleukin-1 β levels were(11.38±1.26),(31.62±2.58),(15.61±1.35)and(16.72±1.38)pg·mL-1;interleukin-6 levels were(10.62±1.02),(25.43±2.51),(13.27±1.15)and(14.01±1.17)pg·mL-1;NLRP3 protein expression levels in auricular tissues were 0.23±0.03,0.81±0.08,0.30±0.04 and 0.32±0.04;and Caspase-1 protein expression levels were 0.31±0.04,0.76±0.08,0.39±0.04 and 0.41±0.04;matrix metalloproteinase-2 protein expression levels were 0.35±0.04,0.86±0.10,0.40±0.05 and 0.42±0.05.Compared with the model group,the above indexes in the experimental-H group were statistically significant(all P＜0.05).Conclusion Baicalin can inhibit the inflammatory response in acne rats,and its mechanism of action may be related to the inhibition of the NLRP3 inflammasome signaling pathway.

Objective To investigate the clinicopathological features,immunohistochemical features,diagnosis,and relationship with sporadic prostate cancer in primary small cell neuroendocrine carcinoma of the bladder. Methods We retrospectively analyzed the clinical characteristics of 12 patients with primary small cell neuroendocrine carcinoma of the bladder diagnosed at Beijing Chao-Yang Hospital affiliated to Capital Medical University from January 2013 to September 2022.The histological features of primary small cell neuroendocrine carcinoma of the bladder were re-evaluated by two pathologists according to the 2022 revision of the World Health Organization Classification of Tumors of the Urinary System and Male Genital Organs.Electronic medical records were retrieved,and telephone follow-up was conducted from the time of histopathological diagnosis to the death or the end of the last follow-up until January 31,2023. Results The 12 patients include 7 patients in pT3 stage and 1 patient in pT4 stage.Eight patients were complicated with other types of tumors,such as high-grade urothelial carcinoma of the bladder and squamous cell carcinoma.Five patients had sporadic prostate cancer.Immunohistochemical staining showed that 12 (100.0%),10 (83.3%),and 8 (66.7%) patients were tested positive for CD56,Syn,and CgA,respectively.The Ki67 proliferation index ranged from 80% to 90%.Five patients with urothelial carcinoma were tested positive for CK20,GATA3,and CK7.P504S was positive in all the 5 patients with prostate cancer,while P63 and 34βE12 were negative.The follow-up of the 12 patients lasted for 3-60 months.Eight of these patients died during follow-up,with the median survival of 15.5 months.Four patients survived. Conclusions Primary small cell neuroendocrine carcinoma of the bladder is a rare urological tumor with high aggressiveness and poor prognosis.In male patients with bladder prostatectomy,all prostate tissue should be sampled.If prostate cancer is detected,the prostate-specific antigen level should be monitored.
Humans ; Male ; Carcinoma, Transitional Cell/pathology* ; Carcinoma, Neuroendocrine/pathology* ; Urinary Bladder Neoplasms/pathology* ; Urinary Bladder/pathology* ; Retrospective Studies ; Prostatic Neoplasms ; Biomarkers, Tumor

OBJECTIVE: This study aimed to determine the HIV-1 subtype distribution and HIV drug resistance (HIVDR) in patients with ART failure from 2014 to 2020 in Hainan, China. METHODS: A 7-year cross-sectional study was conducted among HIV/AIDS patients with ART failure in Hainan. We used online subtyping tools and the maximum likelihood phylogenetic tree to confirm the HIV subtypes with pol sequences. Drug resistance mutations (DRMs) were analyzed using the Stanford University HIV Drug Resistance Database. RESULTS: A total of 307 HIV-infected patients with ART failure were included, and 241 available pol sequences were obtained. Among 241 patients, CRF01_AE accounted for 68.88%, followed by CRF07_BC (17.00%) and eight other subtypes (14.12%). The overall prevalence of HIVDR was 61.41%, and the HIVDR against non-nucleoside reverse transcriptase inhibitors (NNRTIs), nucleotide reverse transcriptase inhibitors (NRTIs), and protease inhibitors (PIs) were 59.75%, 45.64%, and 2.49%, respectively. Unemployed patients, hypoimmunity or opportunistic infections in individuals, and samples from 2017 to 2020 increased the odd ratios of HIVDR. Also, HIVDR was less likely to affect female patients. The common DRMs to NNRTIs were K103N (21.99%) and Y181C (20.33%), and M184V (28.21%) and K65R (19.09%) were the main DRMs against NRTIs. CONCLUSION The present study highlights the HIV-1 subtype diversity in Hainan and the importance of HIVDR surveillance over a long period.
Humans ; Reverse Transcriptase Inhibitors/therapeutic use* ; HIV-1/genetics* ; Cross-Sectional Studies ; Phylogeny ; Anti-HIV Agents/therapeutic use* ; Drug Resistance, Viral/genetics* ; HIV Infections/epidemiology* ; Mutation ; China/epidemiology* ; Prevalence ; Genotype

Objective To explore the predictive value of the expression of CD44v6 and EGFR on the efficacy of neoadjuvant chemotherapy (NACT) in stageⅡ-Ⅲ cervical cancer. Methods A total of 53 patients with stageⅡ-Ⅲ cervical cancer diagnosed by pathology were selected. All patients received two cycles of paclitaxel+platinum NACT. The pathological tissue samples of cervical tumors before NACT treatment were collected. The expression of CD44v6 and EGFR were detected by the immunohistochemical SP method, and we analyzed their predictive value of NACT in stageⅡ-Ⅲ cervical cancer. Results Among the 53 patients, 38 were in the NACT effective group (CR+PR), and 15 were in the NACT ineffective group (SD+PD). The expression of CD44v6 in the ineffective group was significantly higher than that in the effective group (P < 0.05). The expression of CD44v6 was significantly different in patients with CR, PR, and SD (P < 0.05). The AUC of CD44v6 to NACT effect on stage Ⅱ-Ⅲ cervical cancer was 0.74 (P < 0.05). The patients in the high expression group of CD44v6 had worse efficacy in NACT than those in the low expression group of CD44v6 (P < 0.05). Pearson test showed that CD44v6 and EGFR expression were correlated (R=0.34, P < 0.05). Conclusion High expression of CD44v6 may reduce the efficacy of NACT in stageⅡ-Ⅲ cervical cancer, suggesting that the expression of CD44v6 has a certain predictive value and clinical significance in the efficacy of paclitaxel+platinum NACT on cervical cancer. Moreover, CD44v6 is positively correlated with EGFR expression.

Skin wound healing tends to slow down with aging, which is detrimental to both minor wound recovery in daily life and the recovery after surgery. The aim of current study was to explore the effect of histone deacetylase 6 (HDAC6) on wound healing during aging. Cultured human dermal fibroblasts (HDFs) and mouse full-thickness skin wound model were used to explore the functional changes of replicative senescent dermal fibroblasts and the effect of aging on skin wound healing. Scratch wound healing assay revealed significantly decreased migration speed of senescent HDFs, and BrdU incorporation assay indicated their considerably retardant proliferation. The protein expression levels of collagen and HDAC6 were significantly decreased in both senescent HDFs and skin tissues from aged mice. HDAC6 activity inhibition with highly selective inhibitor tubastatin A (TsA) or HDAC6 knockdown with siRNA decreased the migration speed of HDFs and considerably suppressed fibroblast differentiation induced by transforming growth factor-β1 (TGF-β1), which suggests the involvement of HDAC6 in regulating fundamental physiological activities of dermal fibroblasts. In vivo full-thickness skin wound healing was significantly delayed in young HDAC6 knockout mice when compared with young wild type mice. In addition, the wound healing was significantly slower in aged wild type mice than that in young wild type mice, and became even worse in aged HDAC6 knockout aged mice. Compared to the aged wild type mice, aged HDAC6 knockout mice exhibited delayed angiogenesis, reduced collagen synthesis, and decreased collagen deposition in skin wounds. Together, these results suggest that delayed skin wound healing in aged mice is associated with impaired fibroblast function. Adequate expression and activity of HDAC6 are required for fibroblasts migration and differentiation.
Humans ; Animals ; Mice ; Aged ; Histone Deacetylase 6 ; Skin ; Wound Healing ; Cell Movement ; Collagen/pharmacology* ; Fibroblasts ; Mice, Knockout ; Cells, Cultured

The antidepressant effect of Xiaoyaosan has been demonstrated. It is of value to explore the biological mechanism of Xiaoyaosan in the treatment of depression from the perspective of functional modules by using the method of functional module division of the metabolic network. The differential metabolites and related enzymes and proteins regulated by Xiaoyaosan were identified in the database. Pathway enrichment analysis and crosstalk pathway analysis of Xiaoyaosan regulated metabolites was carried out. A network of differentially regulated metabolites and their enzymes and proteins was constructed by using the STRING tool. The CNM decomposition algorithm was used to extract the functional modules of the network and enrichment analysis of functional modules was carried out. The results show that Xiaoyaosan regulates 97 differential metabolites, 234 related enzymes and 258 depression-related proteins. The pathways crosstalk analysis was divided into two sub-networks, one of which is related to the neural system and cell signal transduction, the other is related to the endocrine system and metabolic pathways. KEGG pathway enrichment analysis of the network and 9 functional modules extracted by the CNM algorithm shows that module 1 and module 3 belong to the pathways that can be enriched into more pathways with fewer proteins. The corresponding functions of these pathways include the endocrine system, amino acid metabolism, the nervous system and signal transduction. In this study, pathway crosstalk analysis and metabolic network module division strategies were used to explain the biological mechanism of Xiaoyaosan in the treatment of depression, providing ideas and methods for in-depth study of the pharmacological mechanism of this traditional Chinese medicine from the perspective of metabolic regulation.

Dengzhan Shengmai Capsules( DZSMC),a well-known traditional Chinese medicine( TCM) formula,is comprised of the main drug of Erigeron breviscapus,and supplemented with Panax ginseng,Ophiopogon japonicus and Schisandra chinensis,with functions of supplementing Qi and nourishing Yin,promoting blood circulation and strengthening brain. DZSMC is the only Chinese patent drug with A-level evidence-based medicine in secondary prevention for stroke and ranks first among TCMs for neurological treatment. Modern studies indicate that the chemical constituents of DZSMC mainly include flavonoids,phenolic acids,lignans,saponins and so on. Pharmacological experimental studies have shown that DZSMC has such pharmacological effects as anti-oxidation,anti-inflammatory and anti-myocardial ischemia. DZSMC is mainly used in the convalescent care of ischemic cardiovascular and cerebrovascular diseases,and is often used in combination with various conventional therapeutic drugs to exert clinical efficacy through brain protection,neuroprotection,etc.,and improve clinical symptoms in patients. In this review,according to domestic and international related literature combined with research results obtained by our project,the research advances in the chemical constituents,pharmacological effects and clinical application of DZSMC have been systematically reviewed and summarized,providing reference and support for further study and secondary development of the formula.
Drugs, Chinese Herbal/pharmacology* ; Erigeron/chemistry* ; Humans ; Medicine, Chinese Traditional ; Ophiopogon ; Panax ; Phytochemicals/pharmacology* ; Phytotherapy ; Schisandra

Objective:To investigate the effect of warmer intravenous infusion combined with local liquid dressing skin daub methods in short-term PN infusion patients with peripheral venous indwelling needle.Methods:Using the single blind random control method,150 PN patients from October 2015 to August 2016 were included.The control group was given the liquid dressing skin daub with 75 cases,and the observation group was given warmer intravenous infusion jointing local liquid dressing skin daub with 75 cases.To observe the incidence of phlebitis and the pain of the infusion catheter site with the infusion limb and the average maintain time of peripheral venous indwelling needle.Results:The incidence of phlebitis was significantly lower in the observation group than that in the control group (P ＜ 0.01) in two groups.The degree of infusion catheter pain with infusion limb pain wasless painful in the observation group than that in the control group (P ＜ 0.005) in two groups.The degree of catheter site pain after pulling out peripheral venous indwelling needle was less painful in the observation group than that in the control group(P ＜ 0.01) in two groups To compare the average maintain time of peripheral venous indwelling needle was (P ＜ 0.001)in two groups.Conclusion:Warmer intravenous infusion combined with liquid dressing skin daub can effectively prevent the occurrence of phlebitis in patients with peripheral venous indwelling needle PN infusion and improve the comfort.

Objective: To investigate the association of a very common mutation of c.144delC in the aurora kinase C (AURKC) gene with idiopathic teratozoospermia in Chinese infertile men in Sichuan. METHODS: Using polymerase chain reaction (PCR) and next-generation sequencing, we analyzed the correlation between c.144delC polymorphism of the AURKC gene and male infertility in 98 idiopathic teratozoospermia patients in comparison with 162 normal fertile men. RESULTS: Neither c.144delC mutation nor other meaningful mutations were detected in the AURKC gene in the 98 idiopathic teratozoospermia patients or the 162 normal controls. CONCLUSIONS Teratozoospermia is not correlated with c.144delC mutation in the AURKC gene in the men of the Sichuan area. Therefore, large-scale genotyping of the AURKC gene may not be necessary clinically among Chinese patients with idiopathic teratozoospermia.
Aurora Kinase C ; genetics ; Humans ; Male ; Mutation ; genetics ; Polymorphism, Genetic ; Spermatozoa ; Teratozoospermia ; genetics