Objective To explore the pathogenesis and prognostic factors of liposarcoma in the head and neck region, and simultaneously analyze the efficacy of different treatment regimens. Methods A retrospective analysis was performed on all patients with primary untreated head and neck liposarcoma who were diagnosed and underwent surgical treatment at our hospital from January 2008 to January 2024. All patients were monitored during follow-up, and their prognoses were analyzed using SPSS software. Results A total of 30 patients were included in the study. Liposarcoma accounted for up to 60% of the cases in the orbit, while the remaining liposarcomas were primarily located in various interspaces of the neck. Dedifferentiated liposarcoma was the most common type, comprising 33%, while myxoid pleomorphic liposarcoma was the rarest at 4%. The tumor pathological type (P<0.001) and Ki67 (P=0.014) significantly affected the tumor control rate. However, an analysis of disease-specific survival rates revealed no significant differences across various factors (all P>0.05). Conclusion The prognosis of head and neck liposarcoma is better compared to that of liposarcomas in other parts of the body. However, myxoid pleomorphic liposarcoma, pleomorphic fat sarcoma, and high Ki67 levels are indicators of poor prognosis. Additionally, postoperative adjuvant radiotherapy does not significantly enhance disease-specific survival rates.

Objective In order to provide a better reference and basis for the selection of reasonable hypoglycemic drugs for clinical treatment,the study conducted a comprehensive clinical evaluation of the innovator sodium-glucose transporters 2(SGLT-2)inhibitors,based on A Quick Guideline for Drug Evaluation and Selection in Chinese Medical Institutions(the Second Edition).Methods The real-world studies,randomized controlled trials,Meta-analysis/systematic review,drug clinical use guidelines,expert consensus and drug description evaluation evidence were collected,and the included drugs were assigned and evaluated from five dimensions:pharmaceutical characteristics,efficacy,safety,economy and other attributes.Results All SGLT-2 inhibitors had evaluation scores above 75,with dagaglifloztin tablets having the highest score of 84.6,and canaglifloztin having the lowest score of 75.1.Conclusions All five original SGLT-2 inhibitors showed good clinical utility,the difference is that the participating original drugs have different advantageous intervals in clinical use.The results show that dagliflozin has the most ideal clinical utility,and its clinical use should be safer and more effective.Due to the short time on the market and insufficient evidence-based reasons,the advantages of clinical use of proline hemegliflozin are not obvious compared with other evaluated drugs.

With the widespread adoption of low-dose CT screening and the extensive application of high-resolution CT, the detection rate of sub-centimeter lung nodules has significantly increased. How to scientifically manage these nodules while avoiding overtreatment and diagnostic delays has become an important clinical issue. Among them, lung nodules with a consolidation tumor ratio less than 0.25, dominated by ground-glass shadows, are particularly worthy of attention. The therapeutic challenge for this group is how to achieve precise and complete resection of nodules during surgery while maximizing the preservation of the patient's lung function. The "watershed topography map" is a new technology based on big data and artificial intelligence algorithms. This method uses Dicom data from conventional dose CT scans, combined with microscopic (22-24 levels) capillary network anatomical watershed features, to generate high-precision simulated natural segmentation planes of lung sub-segments through specific textures and forms. This technology forms fluorescent watershed boundaries on the lung surface, which highly fit the actual lung anatomical structure. By analyzing the adjacent relationship between the nodule and the watershed boundary, real-time, visually accurate positioning of the nodule can be achieved. This innovative technology provides a new solution for the intraoperative positioning and resection of lung nodules. This consensus was led by four major domestic societies, jointly with expert teams in related fields, oriented to clinical practical needs, referring to domestic and foreign guidelines and consensus, and finally formed after multiple rounds of consultation, discussion, and voting. The main content covers the theoretical basis of the "watershed topography map" technology, indications, operation procedures, surgical planning details, and postoperative evaluation standards, aiming to provide scientific guidance and exploration directions for clinical peers who are currently or plan to carry out lung nodule resection using the fluorescent microscope watershed analysis method.

OBJECTIVE To investigate the prognostic factors of chondrosarcoma of the larynx,deeply analyze its clinical data,and provide a theoretical basis for better treatment of chondrosarcoma of the larynx.METHODS A retrospective analysis was conducted on the complete clinical data of patients with primary chondrosarcoma of the larynx admitted to the Department of Otolaryngology Head and Neck Surgery,Beijing Tongren Hospital,Capital Medical University from January 2010 to December 2024.RESULTS A total of 15 patients were included,including 11 males and 4 females,with a gender ratio of 11∶4.The average age of onset was 57.3 years,and the average clinical symptom duration was 12.2 months.The tumors were mainly located in the cricoid cartilage in 11 patients,in the arytenoid cartilage in 2 patients,and in the thyroid cartilage in 2 patients.Tumor grading showed that 7 patients were grade I and 8 were grade II.Four patients underwent transoral laser minimally invasive surgery,2 patients underwent partial laryngectomy+tracheotomy,and 9 patients underwent total laryngectomy/cervical lymph node dissection+tracheostomy.The 5-year overall survival rate was 85.7%,the 5-year disease-specific survival rate was 100%,and the 5-year local-regional control rate was 90.9%.Gender,tumor location,tumor grade,Ki-67,tumor size,and whether larynx preservation surgery was performed did not affect the local-regional control rate or disease-specific survival rate.CONCLUSION Laryngeal chondrosarcoma generally has a longer disease history and is difficult to detect.The pathological type is mostly well-differentiated.Regional or distant metastasis is rare,and the long-term survival rate is good.Surgical resection is the preferred treatment option.On the basis of not reducing the tumor control rate,surgery that prioritizes preserving laryngeal function should be given priority,while comprehensive treatment is generally not recommended.

Objective In order to provide a better reference and basis for the selection of reasonable hypoglycemic drugs for clinical treatment,the study conducted a comprehensive clinical evaluation of the innovator sodium-glucose transporters 2(SGLT-2)inhibitors,based on A Quick Guideline for Drug Evaluation and Selection in Chinese Medical Institutions(the Second Edition).Methods The real-world studies,randomized controlled trials,Meta-analysis/systematic review,drug clinical use guidelines,expert consensus and drug description evaluation evidence were collected,and the included drugs were assigned and evaluated from five dimensions:pharmaceutical characteristics,efficacy,safety,economy and other attributes.Results All SGLT-2 inhibitors had evaluation scores above 75,with dagaglifloztin tablets having the highest score of 84.6,and canaglifloztin having the lowest score of 75.1.Conclusions All five original SGLT-2 inhibitors showed good clinical utility,the difference is that the participating original drugs have different advantageous intervals in clinical use.The results show that dagliflozin has the most ideal clinical utility,and its clinical use should be safer and more effective.Due to the short time on the market and insufficient evidence-based reasons,the advantages of clinical use of proline hemegliflozin are not obvious compared with other evaluated drugs.

Bovine coronavirus(BCoV)can cause diarrhea in calves,as well as respiratory diseases,and lead to the death of calves in severe cases,resulting in great economic losses to the cattle pro-duction.BCoV is highly prevalent and widely spread.So far in China there is no independently de-veloped vaccine against BCoV on the market.In this study,the most conserved N gene of BCoV was first selected to construct a prokaryotic expression vector,and the N protein was expressed and purified;subsequently,BALB/c mice were immunized with BCoV N protein combined with Freund's adjuvant,and the antibody potency,the proportion of splenic T-lymphocyte subpopulation and the cytokine release of the immunized mice were detected by ELISA and flow cytometry.The results showed that a soluble BCoV N protein about 55 kDa in size was successfully obtained.The ELISA test showed that the antibody potency of serum IgG and IgA was 1∶51 200 and 1∶3 200,respectively,in mice immunized with BCoV N protein combined with Freund's adjuvant.The flow cytometry test showed that the percentage of CD4+/CD8+T-lymphocytc subsets was extremely higher in the immunized mice(P＜0.01),and the release of TNF-α was significantly higher(P＜0.05),producing a cellular immune response biased towards the Th1 type in comparison with that in control mice.It is indicated that the soluble expression of BCoV N protein can be successfully a-chieved by the prokaryotic expression system,and the obtained BCoV N protein presents good im-munogenicity which induces strong humoral,mucosal and cellular immune responses in the immu-nized mice.Our study provides an important technical support for the development of a safe and ef-fective BCoV subunit vaccine.

Objective To investigate the effect of miR-22-3p on pyroptosis of vascular smooth muscle cells(VSMCs)induced by homocysteine(Hcy).Methods Human VSMCs were cultured in vitro and divided into a Control group(0 μmol/L Hey)and a Hey group(100 μmol/L Hey).After intervention,expression levels of pro Caspase-1,gasdermin D(GSDMD),N-GSDMD,and NLR family pyrin domain containing 3(NLRP3)were detected by Western blot.MiR-22-3p expression was determined by quantitative real-time reverse-transcription polymerase chain reaction.Interleukin(IL)-1 β and IL-18 levels in the supernatant were measured by enzyme-linked immunosorbent assay.Cells were also transfected with control miR-22-3p(miR-22-3p-NC),miR-22-3p-mimic,and miR-22-3p-inhibitor,to observe the effects on VSMC pyroptosis induced by Hcy.Results Expression levels of pro Caspase-1,GSDMD,N-GSDMD,and NLRP3 in VSMCs were increased(P＜0.05),IL-1 β and IL-18 levels were increased(P＜0.01),and the relative expression level of miR-22-3p was reduced(P＜0.01)in the Hcy group compared with the Control group.Transfection with miR-22-3p-mimic significantly decreased the expression levels of pro Caspase-1,GSDMD,N-GSDMD,and NLRP3 in VSMCs(P＜0.01),and significantly decreased levels of IL-1β and IL-18(P＜0.01),while transfection with miR-22-3p-inhibitor significantly increased the expression levels of pro Caspase-1,GSDMD,N-GSDMD,and NLRP3 in VSMCs(P＜0.01)and significantly increased the levels of IL-1β and IL-18(P＜0.05).Conclusions MiR-22-3p may delay Hcy-induced VSMC pyroptosis.

OBJECTIVE To analyse the prognosis and laryngeal function retention of patients undergoing minimally invasive and open surgery after induction chemotherapy.METHODS The clinical data of 54 hypopharyngeal carcinoma patients who received induction chemotherapy and underwent laryngeal preservation surgery in Beijing Tongren Hospital from 2016 to 2022 were retrospectively analyzed.The laryngeal function recovery and survival rate were compared between the two groups.RESULTS Twenty-eight patients underwent transoral minimally invasive surgery and 26 patients underwent partial laryngectomy and/or partial laryngectomy via external cervical approach.The 3-year survival rates of the two groups were 63%and 59%,respectively,and the difference was not statistically significant(P＞0.05).The differences were statistically significant(P＜0.05).CONCLUSION In patients with downstaged hypopharyngeal carcinoma after induction chemotherapy,the survival rate of transoral minimally invasive surgery is similar to that of open surgery,and the laryngeal function recovery of transoral minimally invasive surgery is better.

OBJECTIVE To explore the application value of indocyanine green combined with near-infrared autofluorescence imaging technique in identifying pathological parathyroid glands during surgery for primary hyperparathyroidism (PHPT). METHODS Data from 40 patients with PHPT treated in Beijing Tongren Hospital,Capital Medical University were collected,including 10 patients in the indocyanine green treated group and 30 patients in the non-treated group. All patients underwent surgical treatment to remove the affected parathyroid glands. Near-infrared autofluorescence imaging was used for image acquisition,and ImageJ software was used for fluorescence intensity analysis. RESULTS The fluorescence intensity of the pathological parathyroid glands in the indocyanine green-treated group was significantly higher than that in the non-treated group(142.7±23.7 vs. 94.5±31.4,t=-4.434,P=0.000);the fluorescence ratio of pathological parathyroid glands/thyroid glands was significantly higher than that in the non-treated group(1.6±0.3 vs. 1.2±0.4,t=-3.162,P=0.004). There was no correlation between the fluorescence intensity of parathyroid glands in the non-treated group and preoperative blood calcium(r=0.029,P=0.088) and preoperative PTH level(r=-0.142,P=0.455),and there was also no correlation between the fluorescence intensity of parathyroid glands in the treated group and preoperative blood calcium(r=0.206,P=0.568) and preoperative PTH level(r=0.160,P=0.658). The detection rate of near-infrared light in the non-treated group was 53.3％(16/30),while that in the treated group was 100％(10/10). The average detection time for the non-treated group was (71.0±16.9)minutes,while that for the treated group was (52.7±11.1)minutes,with a significant difference between the two groups(t=3.187,P=0.003). CONCLUSION The combination of indocyanine green and near-infrared autofluorescence imaging technique is helpful for identifying the diseased parathyroid glands during the surgical treatment of PHPT.

Bovine coronavirus(BCoV)can cause diarrhea in calves,as well as respiratory diseases,and lead to the death of calves in severe cases,resulting in great economic losses to the cattle pro-duction.BCoV is highly prevalent and widely spread.So far in China there is no independently de-veloped vaccine against BCoV on the market.In this study,the most conserved N gene of BCoV was first selected to construct a prokaryotic expression vector,and the N protein was expressed and purified;subsequently,BALB/c mice were immunized with BCoV N protein combined with Freund's adjuvant,and the antibody potency,the proportion of splenic T-lymphocyte subpopulation and the cytokine release of the immunized mice were detected by ELISA and flow cytometry.The results showed that a soluble BCoV N protein about 55 kDa in size was successfully obtained.The ELISA test showed that the antibody potency of serum IgG and IgA was 1∶51 200 and 1∶3 200,respectively,in mice immunized with BCoV N protein combined with Freund's adjuvant.The flow cytometry test showed that the percentage of CD4+/CD8+T-lymphocytc subsets was extremely higher in the immunized mice(P＜0.01),and the release of TNF-α was significantly higher(P＜0.05),producing a cellular immune response biased towards the Th1 type in comparison with that in control mice.It is indicated that the soluble expression of BCoV N protein can be successfully a-chieved by the prokaryotic expression system,and the obtained BCoV N protein presents good im-munogenicity which induces strong humoral,mucosal and cellular immune responses in the immu-nized mice.Our study provides an important technical support for the development of a safe and ef-fective BCoV subunit vaccine.