Objective To enhance the gamma spectrometry analysis and detection capabilities of personnel in measuring radionuclides in bio-ash, and ensure the accuracy and precision of gamma spectrometer in our laboratory for the analysis of radionuclides in bio-ash. Methods The laboratory participated in the 2024 national interlaboratory comparison for radionuclide measurement in bio-ash. Radionuclides ²⁴¹Am, ¹³⁷Cs, and ⁴⁰K in four different bio-ash samples were measured. Based on the measurement methods specified in GB/T 16145—2022, sample measurement, result calculation, and uncertainty evaluation were performed using spectrometry analysis software and sourceless efficiency calibration software. The measurement results and performance evaluation of the laboratory in the comparison were analyzed, and factors affecting gamma-spectrometry measurement and result interpretation were discussed. Results The relative deviation (D) of the measurement results for radionuclides ²⁴¹Am and ¹³⁷Cs in the four bio-ash samples ranged from −10.2% to 2.0% and −1.7% to 0.3%, respectively. The P statistic ranged from 7.0% to 12.5% and 5.0% to 10.8%, respectively. These results met the criteria of |D| ≤ 20% (MARB), |D| ≤ 2.58P, and P ≤ 20% (MARB). The ζ-scores for the measurement of ⁴⁰K in the four bio-ash samples ranged from 0.8 to 1.3, satisfying the criterion of |ζ| < 2. All measurement results in this laboratory in the comparison were satisfactory. Conclusion The laboratory uses a high-purity germanium gamma spectrometer to measure radionuclides in bio-ash. The self-absorption correction method, analysis method, and uncertainty evaluation are appropriate, which can ensure the accuracy and precision of the measurement results. The measurement results are accurate and reliable.

ObjectiveTo investigate the effects and potential mechanisms of Babaodan （BBD） against acetaminophen （APAP）-induced acute liver injury （ALI） based on transcriptomics. MethodsA total of 36 male C57BL/6 mice were randomly divided into 6 groups （n=6 per group）： normal group， model group， N-acetylcysteine group （NAC， 120 mg·kg^-1）， and BBD low-， medium-， and high-dose groups （BBD-L， BBD-M， BBD-H groups， 75， 150， 300 mg·kg^-1， respectively）. Except for the normal group， all other groups were subjected to APAP-induced ALI. The serum levels of aspartate aminotransferase （AST）， alanine aminotransferase （ALT）， total cholesterol （TC）， triglyceride （TG）， and low-density lipoprotein cholesterol （LDL-C） were measured in each group. Hepatic levels or activities of malondialdehyde （MDA） and glutathione peroxidase （GSH-Px） were detected using commercial kits. Hematoxylin-eosin （HE） staining was performed to evaluate the degree of liver histopathological damage. Transcriptomic analysis was employed to screen differentially expressed genes （DEGs）， and Kyoto Encyclopedia of Genes and Genomes （KEGG） pathway enrichment analysis was performed to identify differential pathways involved in BBD intervention against ALI. Real-time quantitative polymerase chain reaction （Real-time PCR） and Western blot were applied to validate the expression of differential genes and related pathway proteins. Additionally， glucose （GLU） consumption， as well as lactate （LD） and adenosine triphosphate （ATP） content were assessed across all mouse groups. ResultsPharmacodynamic evaluation showed that， compared with the normal group， the model group exhibited significantly elevated serum levels of ALT， AST， TC， TG， and LDL-C （P<0.01）， significantly increased MDA level （P<0.01）， and significantly decreased GSH-Px level （P<0.05）. Compared with the model group， BBD intervention at different doses significantly reduced the serum levels of ALT， AST， TC， TG， and LDL-C （P<0.05， P<0.01）， increased GSH-Px level （P<0.05， P<0.01）， significantly decreased MDA level （P<0.01）， and ameliorated hepatic histopathological injury. Liver transcriptomic analysis revealed that， following high-dose BBD intervention， the core genes were mainly enriched in pathways related to inflammatory responses and energy metabolic reprogramming， including the interleukin-17 （IL-17） signaling pathway， the phosphatidylinositol 3-kinase （PI3K）/protein kinase B （Akt） signaling pathway， fructose and mannose metabolism， and glycolysis. Real-time PCR validation demonstrated that， compared with the normal group， the mRNA expression levels of glycolysis-related genes ［hexokinase 1 （HK1）， hexokinase 2 （HK2）， 6-phosphofructo-2-kinase/fructose-2，6-bisphosphatase 3 （PFKFB3）， 6-phosphofructo-2-kinase/fructose-2，6-bisphosphatase 4 （PFKFB4）， pyruvate kinase M （PKM）， and lactate dehydrogenase A （LDHA）］， as well as inflammatory cytokines ［tumor necrosis factor-α （TNF-α）， interleukin-6 （IL-6）， and interleukin-1β （IL-1β）］ were significantly upregulated in the model group （P<0.05， P<0.01）. Compared with the model group， the BBD-H group showed significantly decreased mRNA expression of HK1， HK2， PFKFB3， PFKFB4， PKM， LDHA， TNF-α， IL-6， and IL-1β （P<0.05， P<0.01）. Western blot results indicated that， compared with the normal group， the model group had significantly increased expression of glycolysis-related proteins ［glucose transporter 1 （GLUT1）， HK1， PFKFB3， and PKM］， inflammatory proteins ［interleukin-18 （IL-18）， TNF-α， and IL-1β］， and phosphorylated （p）-PI3K and p-Akt proteins （P<0.05， P<0.01）. Compared with the model group， the BBD-H group exhibited significantly decreased expression of GLUT1， HK1， PFKFB3， PKM， IL-18， TNF-α， IL-1β， p-PI3K， and p-Akt （P<0.05， P<0.01）. Metabolic indicator measurements showed that， compared with the model group， the BBD-H group showed significantly reduced GLU consumption， LD and ATP content （P<0.05， P<0.01）. ConclusionBBD may alleviate APAP-induced ALI through dual regulation of metabolic reprogramming and inflammatory responses， potentially via inhibition of the PI3K/Akt signaling pathway.

ObjectiveTo investigate the effects and potential mechanisms of Babaodan （BBD） against acetaminophen （APAP）-induced acute liver injury （ALI） based on transcriptomics. MethodsA total of 36 male C57BL/6 mice were randomly divided into 6 groups （n=6 per group）： normal group， model group， N-acetylcysteine group （NAC， 120 mg·kg^-1）， and BBD low-， medium-， and high-dose groups （BBD-L， BBD-M， BBD-H groups， 75， 150， 300 mg·kg^-1， respectively）. Except for the normal group， all other groups were subjected to APAP-induced ALI. The serum levels of aspartate aminotransferase （AST）， alanine aminotransferase （ALT）， total cholesterol （TC）， triglyceride （TG）， and low-density lipoprotein cholesterol （LDL-C） were measured in each group. Hepatic levels or activities of malondialdehyde （MDA） and glutathione peroxidase （GSH-Px） were detected using commercial kits. Hematoxylin-eosin （HE） staining was performed to evaluate the degree of liver histopathological damage. Transcriptomic analysis was employed to screen differentially expressed genes （DEGs）， and Kyoto Encyclopedia of Genes and Genomes （KEGG） pathway enrichment analysis was performed to identify differential pathways involved in BBD intervention against ALI. Real-time quantitative polymerase chain reaction （Real-time PCR） and Western blot were applied to validate the expression of differential genes and related pathway proteins. Additionally， glucose （GLU） consumption， as well as lactate （LD） and adenosine triphosphate （ATP） content were assessed across all mouse groups. ResultsPharmacodynamic evaluation showed that， compared with the normal group， the model group exhibited significantly elevated serum levels of ALT， AST， TC， TG， and LDL-C （P<0.01）， significantly increased MDA level （P<0.01）， and significantly decreased GSH-Px level （P<0.05）. Compared with the model group， BBD intervention at different doses significantly reduced the serum levels of ALT， AST， TC， TG， and LDL-C （P<0.05， P<0.01）， increased GSH-Px level （P<0.05， P<0.01）， significantly decreased MDA level （P<0.01）， and ameliorated hepatic histopathological injury. Liver transcriptomic analysis revealed that， following high-dose BBD intervention， the core genes were mainly enriched in pathways related to inflammatory responses and energy metabolic reprogramming， including the interleukin-17 （IL-17） signaling pathway， the phosphatidylinositol 3-kinase （PI3K）/protein kinase B （Akt） signaling pathway， fructose and mannose metabolism， and glycolysis. Real-time PCR validation demonstrated that， compared with the normal group， the mRNA expression levels of glycolysis-related genes ［hexokinase 1 （HK1）， hexokinase 2 （HK2）， 6-phosphofructo-2-kinase/fructose-2，6-bisphosphatase 3 （PFKFB3）， 6-phosphofructo-2-kinase/fructose-2，6-bisphosphatase 4 （PFKFB4）， pyruvate kinase M （PKM）， and lactate dehydrogenase A （LDHA）］， as well as inflammatory cytokines ［tumor necrosis factor-α （TNF-α）， interleukin-6 （IL-6）， and interleukin-1β （IL-1β）］ were significantly upregulated in the model group （P<0.05， P<0.01）. Compared with the model group， the BBD-H group showed significantly decreased mRNA expression of HK1， HK2， PFKFB3， PFKFB4， PKM， LDHA， TNF-α， IL-6， and IL-1β （P<0.05， P<0.01）. Western blot results indicated that， compared with the normal group， the model group had significantly increased expression of glycolysis-related proteins ［glucose transporter 1 （GLUT1）， HK1， PFKFB3， and PKM］， inflammatory proteins ［interleukin-18 （IL-18）， TNF-α， and IL-1β］， and phosphorylated （p）-PI3K and p-Akt proteins （P<0.05， P<0.01）. Compared with the model group， the BBD-H group exhibited significantly decreased expression of GLUT1， HK1， PFKFB3， PKM， IL-18， TNF-α， IL-1β， p-PI3K， and p-Akt （P<0.05， P<0.01）. Metabolic indicator measurements showed that， compared with the model group， the BBD-H group showed significantly reduced GLU consumption， LD and ATP content （P<0.05， P<0.01）. ConclusionBBD may alleviate APAP-induced ALI through dual regulation of metabolic reprogramming and inflammatory responses， potentially via inhibition of the PI3K/Akt signaling pathway.

With the extended survival period of breast cancer patients and the increasing health demands, the concomitant diseases of breast cancer have gradually attracted the attention of both doctors and patients, and it is imperative to conduct comprehensive management of these diseases, in which the general practitioners, as the more comprehensive and complex medical talents, have not yet played their due roles. In this article, we report two cases of comprehensive management of concomitant diseases of breast cancer through collaboration of general practitioners and specialists (integrated general and specialist care). The role and function of general practitioners in this process were deeply analyzed, and the establishment of a consultation-liaison general practice model to further promote the role of integrated general and specialist care in integrated oncology care was advocated.

Objective To investigate the effect of epifriedelanol(Epi)on gene expression of P-glycoprotein(P-gp)in human colorectal adenocarcinoma cell line LS174T and its mechanism.Methods LS174T cells were divided into control group and experimental-L,-M,-H groups.Experimental-L,-M,-H groups were treated with 5,10,20 μmol·L-1 Epi,respectively.Control group was treated with 0.1％dimethyl sulfoxide.Polymerase chain reaction was used to detect the mRNA expression level of P-gp.Theeffect of Epi on multidrug resistance protein 1(MDR1/P-gp)luciferase activity was investigated by pregnane X receptor(PXR)-MDR1/P-gp dual luciferase reporter gene assay.In addition,Western Blot was used to detect the protein expression level of P-gp and the nuclear factor-κB(NF-κB)pathway related proteins.Results The relative expression levels of P-gp mRNA in experimental-M,-H groups and control group were 52.24±5.19,23.00±3.52 and 100.00±9.00;the relative expression levels of P-gp protein were 86.37±9.96,74.85±15.92 and 100.00±12.91;the relative activities P-gp luciferase were 230.19±41.32,203.10±52.84 and 279.67±19.20;the relative expression levels of p65(RelA/p65)in nucleus were 132.36±23.93,145.96±25.15 and 100.00±10.88;the relative expression levels of phosphorylation NF-κB inhibits protein kinase α/β(p-IKKα/β)in cytoplasm were 184.00±54.82,290.10±49.59 and 100.00±15.34;the relative expression levels of phosphorylated NF-κB inhibitory protein α(p-IκBα)in cytoplasm were 125.73±18.77,133.69±20.25 and 100.00±8.12;the relative expression levels of IκBα in cytoplasm were 78.36±14.83,70.44±14.57 and 100.00±22.82,respectively.The above indexes of experimental-M and experimental-H groups were compared with control group,and the differences were statistically significant(P＜0.05,P＜0.01,P＜0.001).Conclusion Epi can down-regulate the gene expression of P-gp in human colorectal adenocarcinoma cell line LS174T,and the mechanism may be related to activation of NF-κB and suppression of PXR.

With the extended survival period of breast cancer patients and the increasing health demands, the concomitant diseases of breast cancer have gradually attracted the attention of both doctors and patients, and it is imperative to conduct comprehensive management of these diseases, in which the general practitioners, as the more comprehensive and complex medical talents, have not yet played their due roles. In this article, we report two cases of comprehensive management of concomitant diseases of breast cancer through collaboration of general practitioners and specialists (integrated general and specialist care). The role and function of general practitioners in this process were deeply analyzed, and the establishment of a consultation-liaison general practice model to further promote the role of integrated general and specialist care in integrated oncology care was advocated.

Objective To investigate the effect of epifriedelanol(Epi)on gene expression of P-glycoprotein(P-gp)in human colorectal adenocarcinoma cell line LS174T and its mechanism.Methods LS174T cells were divided into control group and experimental-L,-M,-H groups.Experimental-L,-M,-H groups were treated with 5,10,20 μmol·L-1 Epi,respectively.Control group was treated with 0.1％dimethyl sulfoxide.Polymerase chain reaction was used to detect the mRNA expression level of P-gp.Theeffect of Epi on multidrug resistance protein 1(MDR1/P-gp)luciferase activity was investigated by pregnane X receptor(PXR)-MDR1/P-gp dual luciferase reporter gene assay.In addition,Western Blot was used to detect the protein expression level of P-gp and the nuclear factor-κB(NF-κB)pathway related proteins.Results The relative expression levels of P-gp mRNA in experimental-M,-H groups and control group were 52.24±5.19,23.00±3.52 and 100.00±9.00;the relative expression levels of P-gp protein were 86.37±9.96,74.85±15.92 and 100.00±12.91;the relative activities P-gp luciferase were 230.19±41.32,203.10±52.84 and 279.67±19.20;the relative expression levels of p65(RelA/p65)in nucleus were 132.36±23.93,145.96±25.15 and 100.00±10.88;the relative expression levels of phosphorylation NF-κB inhibits protein kinase α/β(p-IKKα/β)in cytoplasm were 184.00±54.82,290.10±49.59 and 100.00±15.34;the relative expression levels of phosphorylated NF-κB inhibitory protein α(p-IκBα)in cytoplasm were 125.73±18.77,133.69±20.25 and 100.00±8.12;the relative expression levels of IκBα in cytoplasm were 78.36±14.83,70.44±14.57 and 100.00±22.82,respectively.The above indexes of experimental-M and experimental-H groups were compared with control group,and the differences were statistically significant(P＜0.05,P＜0.01,P＜0.001).Conclusion Epi can down-regulate the gene expression of P-gp in human colorectal adenocarcinoma cell line LS174T,and the mechanism may be related to activation of NF-κB and suppression of PXR.

Objective:To study the influence of surgical margins on the prognosis of anatomical hepatectomy in patients with hepatocellular carcinoma (HCC) based on a propensity score-matched (PSM) analysis.Methods:Clinical data of 200 patients with HCC undergoing anatomical hepatectomy at the Affiliated Cancer Hospital of Guangxi Medical University from December 2019 to December 2023 were retrospectively analyzed, including 169 males and 31 females, aged 53.4±12.0 years. Patients were divided into the narrow margin group (surgical margin ≤10 mm, n=133) and wide margin group (>10 mm, n=67) according to the width of the surgical margin. PSM was used to compare preoperative indicators such as the maximum diameter of the tumor, the integrity of the tumor capsule, sublesions, and the clinical stage of Barcelona liver cancer (BCLC), perioperative indicators such as intraoperative blood loss, and 24-hour postoperative laboratory indicators such as alanine aminotransferase, aspartate aminotransferase, and alkaline phosphatase between the two groups of patients. The prognosis was analyzed by the Kaplan-Meier method, and the postoperative recurrence-free survival rate of the two groups was compared by the log-rank test. Yates corrected chi-square test was used to analyze the postoperative liver function of the two groups of patients. Results:Before PSM, 133 cases were included in the narrow margin group and 67 cases in the wide margin group. There were statistically significant differences in the clinical stage of BCLC, intraoperative blood loss, alanine aminotransferase, aspartate aminotransferase and alkaline phosphatase between the two groups (all P<0.05). After PSM, 55 cases were included in both the narrow margin group and the wide margin group. There were no statistically significant differences in the clinical stage, intraoperative blood loss, alanine aminotransferase and other indicators of BCLC between the two groups (all P>0.05). The 1-year, 2-year, and 3-year recurrence-free survival rates of the wide margin group were 94.2%, 80.1%, and 75.1% respectively, which were higher than those of the narrow margin group (71.8%, 52.9%, and 44.1%), the difference was statistically significant ( χ2=6.25, P=0.012). After PSM, a total of 12 patients (10.9%, 12/110) in the two groups developed liver dysfunction after the operation, among which 10 cases (18.2%, 10/55) were in the wide margin group and 2 cases (3.6%, 2/55). The incidence of postoperative liver dysfunction in the wide margin group was higher than that in the narrow margin group, the difference was statistically significant difference ( χ2=4.58, P=0.032). Conclusion:A surgical margin >10 mm can improve the relapse free survival rate, but it will increase the incidence of postoperative liver dysfunction.

Nonobstructive azoospermia (NOA), one of the most severe types of male infertility, etiology often remains unclear in most cases. Therefore, this study aimed to detect four biallelic detrimental variants (0.5%) in the minichromosome maintenance domain containing 2 ( MCMDC2 ) genes in 768 NOA patients by whole-exome sequencing (WES). Hematoxylin and eosin (H&E) demonstrated that MCMDC2 deleterious variants caused meiotic arrest in three patients (c.1360G>T, c.1956G>T, and c.685C>T) and hypospermatogenesis in one patient (c.94G>T), as further confirmed through immunofluorescence (IF) staining. The single-cell RNA sequencing data indicated that MCMDC2 was substantially expressed during spermatogenesis. The variants were confirmed as deleterious and responsible for patient infertility through bioinformatics and in vitro experimental analyses. The results revealed four MCMDC2 variants related to NOA, which contributes to the current perception of the function of MCMDC2 in male fertility and presents new perspectives on the genetic etiology of NOA.
Humans ; Male ; Azoospermia/genetics* ; Meiosis/genetics* ; Spermatogenesis/genetics* ; Adult ; Exome Sequencing ; Microtubule-Associated Proteins/genetics* ; Alleles ; Infertility, Male/genetics*