Objective:To explore the clinical characteristics and genetic etiology of a patient with De-differentiated liposarcoma (DDLPS).Methods:A 38-year-old female patient with DDLPS who had visited Hunan Provincial People′s Hospital in January 2025 was selected as the study subject. A retrospective study method was adopted to collect the patient′s clinical data, including current and past medical history, auxiliary examinations, pathological diagnosis, and results of genetic testing. This study was approved by the Ethics Committee of Hunan Provincial People′s Hospital (Ethics No.: KY2025-150).Results:The patient had presented with abdominal pain and abdominal mass. Imaging studies revealed ascites and space-occupying abdominal lesions. Postoperative pathological examination showed that the tumor was composed of spindle cells, and its morphology and immunohistochemistry had made it difficult to distinguish between DDLPS and leiomyosarcoma. High-throughput sequencing revealed characteristic molecular alterations of DDLPS, and fluorescence in situ hybridization confirmed MDM2 gene amplification, leading to a diagnosis of DDLPS. Conclusion:The patient was diagnosed with DDLPS. Her clinical manifestations and pathological features were consistent with the characteristics of DDLPS. Molecular pathological testing played a crucial role in the diagnosis and provided a crucial reference for subsequent treatment.

Objective:To investigate the epidemiological and clinical characteristics of patients with nontuberculous mycobacterial infections in Hunan Province using metagenomics next generation sequencing (mNGS) .Methods:Pathological data form 320 patients diagnosed with mycobacterial infections at the Department of Pathology of Hunan People′s Hospital from June 2019 to December 2023 were collected, including HE staining, acid-fast staring, and fungal fluorescence staining. mNGS was utilized for the classification of mycobacterial pathogens.Results:Among 320 patients with mycobacterial infections, 249 cases were positive for Mycobacterium tuberculosis and 71 cases were positive for nontuberculous mycobacteria. Thirteen genera of nontuberculous mycobacteria were identified from the mycobacterial samples, including Mycobacterium chelonae, Mycobacterium avium complex, Mycobacterium abscessus, Mycobacterium gordonae, Mycobacterium intracellulare, Mycobacterium xenopi, Mycobacterium kansasii, Mycobacterium paragordonae, Mycobacterium obuense, Mycobacterium marinum, Mycobacterium fortuitum, Mycobacterium smegmatis and Mycobacterium mageritense. Conclusions:Infections caused by nontuberculous mycobacteria are gradually increasing, transitioning from single-strain infections to multi-strain complex infections. The histopathological features of nontuberculous mycobacterial infections are difficult to distinguish form those of tuberculosis, posing significant challenges for clinical diagnosis and treatment.

Antibiotic-resistant (AR) bacterial wound infections (WIs) impose major burdens on healthcare systems, exacerbated by ineffective therapies and stalled antibiotic development. Phage therapy and phage-derived enzymes have gained traction as potent alternatives, leveraging targeted bactericidal mechanisms to combat AR pathogens. In this review, we summarised the antimicrobial mechanisms of both phage therapy and phage-derived enzymes as antimicrobial therapy, and outlined recent advances in their use for in vitro , in vivo and clinical applications for WI management. In addition, we also highlights recent advancements in their development, driven by genetic engineering, chemical modifications, and artificial intelligence. Finally, we identified the potential barriers and challenges they may encounter in clinical practice and the corresponding strategies to address these issues. The entire review gives us a comprehensive understanding of the latest advances in phages and their derivative enzyme therapies for treating WIs, in the hope that research in this field will continue to improve and innovate, accelerating the transition from the laboratory to application at the bedside and ultimately improving the efficacy of treatment for AR bacterial WIs.
Humans ; Phage Therapy/methods* ; Wound Infection/drug therapy* ; Bacteriophages/enzymology* ; Enzyme Therapy/methods* ; Animals ; Bacterial Infections/therapy*

OBJECTIVE: To explore the clinical characteristics and genetic etiology of a patient with De-differentiated liposarcoma (DDLPS). METHODS: A 38-year-old female patient with DDLPS who had visited Hunan Provincial People's Hospital in January 2025 was selected as the study subject. A retrospective study method was adopted to collect the patient's clinical data, including current and past medical history, auxiliary examinations, pathological diagnosis, and results of genetic testing. This study was approved by the Ethics Committee of Hunan Provincial People's Hospital (Ethics No.: KY2025-150). RESULTS: The patient had presented with abdominal pain and abdominal mass. Imaging studies revealed ascites and space-occupying abdominal lesions. Postoperative pathological examination showed that the tumor was composed of spindle cells, and its morphology and immunohistochemistry had made it difficult to distinguish between DDLPS and leiomyosarcoma. High-throughput sequencing revealed characteristic molecular alterations of DDLPS, and fluorescence in situ hybridization confirmed MDM2 gene amplification, leading to a diagnosis of DDLPS. CONCLUSION The patient was diagnosed with DDLPS. Her clinical manifestations and pathological features were consistent with the characteristics of DDLPS. Molecular pathological testing played a crucial role in the diagnosis and provided a crucial reference for subsequent treatment.
Humans ; Female ; Adult ; Liposarcoma/diagnosis* ; Phenotype ; Proto-Oncogene Proteins c-mdm2/genetics*

Objective:To evaluate the effectiveness of fosaprepitant in preventing postoperative nausea and vomiting (PONV) following gynecological laparoscopic surgery.Methods:In this randomized parallel-controlled trial, 100 American Society of Anesthesiologists Physical Status classification Ⅰ or Ⅱ patients, aged 18-64 yr, undergoing elective gynecological laparoscopic surgery under general anesthesia at the First Affiliated Hospital of Zhengzhou University, were selected and divided into 2 groups ( n=50 each) in a ratio of 1∶1 using blocked randomization: fosaprepitant group (group F) and tropisetron group (group T). At 30 min before anesthesia induction, fosaprepitant 150 mg was intravenously infused in group F, and tropisetron 5 mg was intravenously infused in group T, both diluted in 150 ml of normal saline. Anesthesia was induced by intravenous injection of midazolam, etomidate, sufentanil and cisatracurium. Anesthesia was maintained by intravenous infusion of remifentanil and propofol. Patient-controlled intravenous analgesia was performed with hydromorphone at the end of operation until 48 h after operation. Metoclopramide was given as rescue antiemetic. The PONV, requirement for antiemetic drugs and related adverse reactions were recorded within 24 h after surgery. Results:The incidence of PONV (10% vs 30%), the incidence of vomiting(2% vs 16%) and the rescue rate of antiemetic drugs(2% vs 12%)were significantly lower in group F than in group T ( P<0.05). There was no significant difference in the incidence of related adverse reactions between the two groups ( P>0.05). Conclusions:Intravenous infusion of fosaprepitant 150 mg at 30 min before anesthesia induction effectively prevents PONV in patients undergoing gynecological laparoscopic surgery, and the efficacy is superior to that of the conventional use of tropisetron.

Objective:To establish an identical UPLC-MS/MS method for determination of related substances of 15 drugs(bezafibrate,acipimox,gliquidone,glimepiride,glipizide,glibenclamide,enalapril,captopril,irbesartan,amlodipine,felodipine,nimodipine,nitrendipine,nisoldipine,nifedipine).Methods:The chromatography was performed on Waters ACQUITY UPLCHSS T3(2.1 mm × 100 mm,1.8 μm)column,mobile phase was 0.01 mmol·L-1 Ammonium formate solution containing 0.1％formic acid and methanol with gradient elution.The flow rate was 0.3 mL·min-1,and the injection volume was 2 μL.The detection was carried out by electrospray ioniza-tion(ESI).Multiple-reaction monitoring(MRM)was employed with switching electrospray ion source polarity in positive and negative mode.Results:The 21 related substances showed good linearity(r ≥0.998 35)in the tested ranges.The precision(RS D≤3.45％)and stability(RSD≤3.48％)of the method were good for the related sub-stances.The average recoveries of the related substances were in the range of 91.81％-101.84％with relative standard deviations RSD≤4.66％.Conclusion:The method is rapid,simple,accurate and highly sensitive,and can be used as a auxiliary test method and confirmatory method for current drug standards.

Objective:To evaluate the effectiveness of fosaprepitant in preventing postoperative nausea and vomiting (PONV) following gynecological laparoscopic surgery.Methods:In this randomized parallel-controlled trial, 100 American Society of Anesthesiologists Physical Status classification Ⅰ or Ⅱ patients, aged 18-64 yr, undergoing elective gynecological laparoscopic surgery under general anesthesia at the First Affiliated Hospital of Zhengzhou University, were selected and divided into 2 groups ( n=50 each) in a ratio of 1∶1 using blocked randomization: fosaprepitant group (group F) and tropisetron group (group T). At 30 min before anesthesia induction, fosaprepitant 150 mg was intravenously infused in group F, and tropisetron 5 mg was intravenously infused in group T, both diluted in 150 ml of normal saline. Anesthesia was induced by intravenous injection of midazolam, etomidate, sufentanil and cisatracurium. Anesthesia was maintained by intravenous infusion of remifentanil and propofol. Patient-controlled intravenous analgesia was performed with hydromorphone at the end of operation until 48 h after operation. Metoclopramide was given as rescue antiemetic. The PONV, requirement for antiemetic drugs and related adverse reactions were recorded within 24 h after surgery. Results:The incidence of PONV (10% vs 30%), the incidence of vomiting(2% vs 16%) and the rescue rate of antiemetic drugs(2% vs 12%)were significantly lower in group F than in group T ( P<0.05). There was no significant difference in the incidence of related adverse reactions between the two groups ( P>0.05). Conclusions:Intravenous infusion of fosaprepitant 150 mg at 30 min before anesthesia induction effectively prevents PONV in patients undergoing gynecological laparoscopic surgery, and the efficacy is superior to that of the conventional use of tropisetron.

Objective:To establish an identical UPLC-MS/MS method for determination of related substances of 15 drugs(bezafibrate,acipimox,gliquidone,glimepiride,glipizide,glibenclamide,enalapril,captopril,irbesartan,amlodipine,felodipine,nimodipine,nitrendipine,nisoldipine,nifedipine).Methods:The chromatography was performed on Waters ACQUITY UPLCHSS T3(2.1 mm × 100 mm,1.8 μm)column,mobile phase was 0.01 mmol·L-1 Ammonium formate solution containing 0.1％formic acid and methanol with gradient elution.The flow rate was 0.3 mL·min-1,and the injection volume was 2 μL.The detection was carried out by electrospray ioniza-tion(ESI).Multiple-reaction monitoring(MRM)was employed with switching electrospray ion source polarity in positive and negative mode.Results:The 21 related substances showed good linearity(r ≥0.998 35)in the tested ranges.The precision(RS D≤3.45％)and stability(RSD≤3.48％)of the method were good for the related sub-stances.The average recoveries of the related substances were in the range of 91.81％-101.84％with relative standard deviations RSD≤4.66％.Conclusion:The method is rapid,simple,accurate and highly sensitive,and can be used as a auxiliary test method and confirmatory method for current drug standards.

Objective:To explore the clinical characteristics and genetic etiology of a patient with De-differentiated liposarcoma (DDLPS).Methods:A 38-year-old female patient with DDLPS who had visited Hunan Provincial People′s Hospital in January 2025 was selected as the study subject. A retrospective study method was adopted to collect the patient′s clinical data, including current and past medical history, auxiliary examinations, pathological diagnosis, and results of genetic testing. This study was approved by the Ethics Committee of Hunan Provincial People′s Hospital (Ethics No.: KY2025-150).Results:The patient had presented with abdominal pain and abdominal mass. Imaging studies revealed ascites and space-occupying abdominal lesions. Postoperative pathological examination showed that the tumor was composed of spindle cells, and its morphology and immunohistochemistry had made it difficult to distinguish between DDLPS and leiomyosarcoma. High-throughput sequencing revealed characteristic molecular alterations of DDLPS, and fluorescence in situ hybridization confirmed MDM2 gene amplification, leading to a diagnosis of DDLPS. Conclusion:The patient was diagnosed with DDLPS. Her clinical manifestations and pathological features were consistent with the characteristics of DDLPS. Molecular pathological testing played a crucial role in the diagnosis and provided a crucial reference for subsequent treatment.

Objective:To investigate the epidemiological and clinical characteristics of patients with nontuberculous mycobacterial infections in Hunan Province using metagenomics next generation sequencing (mNGS) .Methods:Pathological data form 320 patients diagnosed with mycobacterial infections at the Department of Pathology of Hunan People′s Hospital from June 2019 to December 2023 were collected, including HE staining, acid-fast staring, and fungal fluorescence staining. mNGS was utilized for the classification of mycobacterial pathogens.Results:Among 320 patients with mycobacterial infections, 249 cases were positive for Mycobacterium tuberculosis and 71 cases were positive for nontuberculous mycobacteria. Thirteen genera of nontuberculous mycobacteria were identified from the mycobacterial samples, including Mycobacterium chelonae, Mycobacterium avium complex, Mycobacterium abscessus, Mycobacterium gordonae, Mycobacterium intracellulare, Mycobacterium xenopi, Mycobacterium kansasii, Mycobacterium paragordonae, Mycobacterium obuense, Mycobacterium marinum, Mycobacterium fortuitum, Mycobacterium smegmatis and Mycobacterium mageritense. Conclusions:Infections caused by nontuberculous mycobacteria are gradually increasing, transitioning from single-strain infections to multi-strain complex infections. The histopathological features of nontuberculous mycobacterial infections are difficult to distinguish form those of tuberculosis, posing significant challenges for clinical diagnosis and treatment.