Glioma represents the most prevalent malignant tumor of the central nervous system, with chemotherapy serving as an essential adjunctive treatment. However, most chemotherapeutic agents exhibit limited ability to penetrate the blood-brain barrier (BBB). This study introduced a novel dual-targeting strategy for glioma therapy by modulating the formation of nanobody-driven protein coronas to enhance the brain and tumor-targeting efficiency of hydrophobic cisplatin prodrug-loaded lipid nanoparticles (C8Pt-Ls). Specifically, nanobodies (Nbs) with fibrinogen-binding capabilities were conjugated to the surface of C8Pt-Ls, resulting in the generation of Nb-C8Pt-Ls. Within the bloodstream, Nb-C8Pt-Ls could bound more fibrinogen, forming the protein corona that specifically interacted with LRP-1, a receptor highly expressed on the BBB. This interaction enabled a "Hitchhiking Effect" mechanism, facilitating efficient trans-BBB transport and promoting effective brain targeting. Additionally, the protein corona interacted with LRP-1, which is also overexpressed in glioma cells, achieving precise tumor targeting. Computational simulations and SPR detection clarified the molecular interaction mechanism of the Nb-fibrinogen-(LRP-1) complex, confirming its binding specificity and stability. Our results demonstrated that this strategy significantly enhanced C8Pt accumulation in brain tissues and tumors, induced apoptosis in glioma cells, and improved therapeutic efficacy. This study provides a novel framework for glioma therapy and underscores the potential of protein corona modulation-based dual-targeting strategies in advancing treatments for brain tumors.

Objective To study the relationship between serum neuron-specific enolase(NSE)and clinical features of pheochromocytoma/paraganglioma(PPGL).Methods Totally 501 PPGL patients diagnosed from January 2019 to December 2022 were divided into normal NSE group(NSE≤16.3 ng/mL)and elevated NSE group(NSE＞16.3 ng/mL).The clinical characteristics were compared between the two groups.Results Compared with normal NSE group,patients in the elevated NSE group had larger diameter in primary tumor(5.00 cm vs.4.60 cm),higher 24-hour urinary norepinephrine(NE)and 24-hour urinary dopamine(DA)levels,and a higher rate of metasta-sis(31.6%vs.13.7%)(P＜0.05).NSE level was positively correlated with the primary tumor size(r=0.131,P＜0.05),24-hour urinary NE level(r=0.195,P＜0.05)and 24-hour urinary DA level(r=0.119,P＜0.05).Conclusions The level of NSE is related to tumor size,secretion function and metastasis in PPGL patients.

Objective:To explore whether the degree of skeletal muscle atrophy in obese individuals under the influence of colorectal cancer is more severe than that in non-obese individuals.Methods:The clinical data of patients who underwent radical resection of colorectal cancer in our department from Jul 2020 to Dec 2021 was collected. Sixty-four obese patients were included and 64 non-obese patients were matched according to propensity score. At the same time, 51 obese patients were collected from non-tumor patients and matched with 51 non-obese patients. The psoas muscle index (PMI) of included patients was analyzed and compared.Results:The PMI of patients with colorectal cancer was significantly lower than that of corresponding non-tumor patients, regardless of gender and body weight (both P<0.05). The PMI of obese patients with colorectal cancer was significantly lower than that of non-obese patients ( P<0.05). Conclusions:The impact of colorectal cancer on skeletal muscle atrophy in obese individuals is greater than that in normal weight individuals. Therefore, the skeletal muscle status of obese patients with colorectal cancer should be evaluated more comprehensively.

Objective To evaluate the diagnostic value of rectal endoscopic ultrasonography for recto-vaginal endometriosis (RVEM).Methods The clinical data of 36 patients who met the criteria for RVEM between September 2009 and September 2016 in Shengjing Hospital were analyzed.Rectal endoscopic ultrasonography was compared with colonoscopy and pelvic magnetic resonance imaging (MRI) in terms of preoperative diagnosis and their conformance with surgical and postoperative pathological findings.Results Rectal endoscopic ultrasonography was superior to colonoscopy and pelvic MRI in diagnosing RVEM,invasive bowel disease,and the invasive level in the preoperative assessment (P ＜ 0.05),and in its conformance with surgical and postoperative pathological findings.Conclusion Rectal endoscopic ulwasonography is a reliable technique for diagnosing RVEM,with good accuracy in the preoperative diagnosis of invasive bowel disease and its level of invasiveness.

Objective To detect the serum levels of tumor necrosis factor-alpha (TNF-α) and interferengamma (IFN-γ) in brucellosis patients and to study the Th1 immune response in acute and chronic patients.Method Serum levels of TNF-alpha and IFN-gamma of 110 brucellosis patients,including 58 acute brucellosis patients and 52 chronic brucellosis patients,were measured by enzyme linked immunosorbent assay (ELISA) from 2014 to 2015 in Zhangjiakou Infectious Disease Hospital.Results The serum levels of TNF-alpha and IFN-gamma of 58 acute brucellosis patients were (38.2± 3.6) pg/L and (31.3 ± 3.7) ng/L,respectively;the serum levels of TNF-alpha and IFN-gamma of 52 chronic brucellosis patients were (12.4 ± 2.6) pg/L and (8.8 ± 3.4) ng/L,respectively.The differences were statistically significant between acute and chronic patients (t =43.216,33.809,all P ＜ 0.05).The early cure rate,early base cure rate,improvement rate and inefficiency rate were 36.2％ (21/58),32.7％ (19/58),25.9％ (15/58)and 5.2％ (3/58),respectively in acute patients.Inversely,they were 17.3％ (9/52),13.5％ (7/52),15.4％ (8/52)and 53.8％ (28/52),respectively in chronic patients.The therapeutic effect was better in acutepatients than chronic patients (x2 =4.937,5.657,all P ＜ 0.05).Conclusion It seems that acute brucellosis patients have a higher serum levels of TNF-alpha and IFN-gamma and a better prognosis due to effective Th1 immune response,and chronic brucellosis patients are associated with poor outcome due to deficiency of Th1 immune response.