Objective: To investigate the effects of clinical routine X-ray irradiation dose (average irradiation dose: 29.7±0.54 Gy) on the function, apoptosis, activation state and mitochondrial function of platelets during in vitro storage, so as to provide experimental evidence for optimizing platelet irradiation strategies. Methods: A paired experimental design was adopted. Platelets were collected from 12 healthy donors, and each sample was equally divided into the irradiated group and the control group (non-irradiated). All samples were stored for 5 days under standard platelet preservation conditions (22±2℃, continuous oscillation). Flow cytometry was used to detect platelet count, apoptosis rate (Annexin V+ positive rate), activation markers (CD62P, PAC-1, CD42b) and reactive oxygen species (ROS) level. Meanwhile, mitochondrial-specific probes were used to evaluate changes in mitochondrial count, membrane potential and adenosine triphosphate (ATP) content. Additionally, transmission electron microscopy (TEM) was employed to observe the ultrastructure of platelets, with a focus on mitochondrial morphology, platelet membrane integrity and granule distribution. Results: Within 5 days of storage, the platelet count was (841±89.16)×10 /L in the irradiated group and (824.5±92.88)×10 /L in the control group, with no statistically significant difference between the two groups (P=0.54). The apoptosis rate was (4.94±1.39) % in the irradiated group and (5.50±0.83) % in the control group, showing no significant difference (P=0.31). For activation indicators, the CD62P expression rate was (24.32±7.57) % in the irradiated group versus (25.21±8.13) % in the control group (P=0.43). The PAC-1 positive rates were (12.15±4.43) % and (11.75±3.40) % in the irradiated group and control group, respectively (P=0.44). The CD42b expression rates were (12.14±4.43) % and (11.75±3.4) % in the two groups, respectively (P=0.47). The ROS levels were (31.98±8.1) % and (30.64±5.89) % in the two groups, respectively (P=0.45). No significant differences were found in the above indicators. For mitochondrial function indicators, the mitochondrial count was (55.88±11.49) % in the irradiated group and (53.5±7.24) % in the control group (P=0.57). The ATP contents were (42.45±5.29) % and (41.58±9.50) % in the irradiated group and control group, respectively (P=0.77). The relative membrane potential values were (59.53±10.89) % and (57.49±6.54) % in the two groups, respectively (P=0.47). No significant difference were observed on the mitochondrial function-related indicators. TEM further confirmed that the ultrastructure of platelets in the irradiation group was intact, the mitochondrial morphology was normal, and no pathological changes such as swelling or vacuolization were observed. Conclusion: This study evaluated the impact of conventional-dose X-ray irradiation on platelet storage quality, confirming that this dose does not significant impair platelet count, apoptosis rate, activation status, or mitochondrial function. This finding provides important experimental evidence for the clinical promotion of X-ray irradiation technology and suggests its potential as a safe alternative to γ irradiation. Future studies could further expand the sample size and extend the observation period to verify the effects of X-ray irradiation on long-term platelet storage and post-transfusion in vivo survival rate.

Objective To compare and analyze the changes in the use of lung cancer therapeutic drugs before and after the national initiation of health insurance negotiations, and to study the impact of a series of policies on the use of lung cancer drugs. Methods Descriptive statistical methods were used analyze the basic situation of lung cancer patients and the changes of corresponding therapeutic drugs in Peking University People's Hospital from 2014 to 2020, as well as to the hospital procurement data of lung cancer therapeutic drugs in the database of the Chinese Medicine Economic Information. Results From 2014 to 2020, the total cost per capita of lung cancer patients showed a trend of first increasing and then decreasing, increasing before the national drug negotiation and gradually decreasing after the negotiation. After 2017, the use of small ATC categories such as VEGF/VEGFR inhibitors and EGFR tyrosine kinase inhibitors increased significantly, along with a rise in the number of monoclonal antibody varieties. The DDDs of osimertinib, anlotinib, alectinib, crizotinib and other drugs in the medical insurance list increased significantly, and the average daily cost decreased significantly. Conclusion The number of hospitalization days for lung cancer patients had continued to shorten in recent years, and the structure of drug use had changed significantly. The adjustment of the medical insurance catalog had led to more innovative lung cancer drugs showing the trend of volume up and price down.

Objective: To systematically analyze the confirmatory positivity of different combinations of HBsAg screening results in blood testing, providing data to support the optimization of blood donor eligibility management. Methods: A retrospective analysis was conducted on blood screening data from 174 266 voluntary blood donor samples at the Chongqing Blood Center between October 2021 and September 2022. Samples with inconsistent results between the two HBsAg enzymelinked immunosorbent assays (ELISA) and individual donor nucleic acid testing (NAT) were confirmed using an electrochemiluminescence immunoassay (ECLIA) and a neutralization test. The detection efficacy of four different HBsAg ELISA reagents was compared using the HBsAg-confirmed positive samples. Results: A total of 767(0.44%) HBV-reactive (HB-sAg and/or HBV DNA reactive) samples were detected. Among them, 344 samples with discordant serological and NAT results were collected, of which 64(18.6%) were confirmed positive by neutralization test. Additionally, 5 samples that were neutralization-negative but double-reactive for HBsAg and HBV DNA were confirmed as positive according to FDA guidance, resulting in a total of 69(20.1%) confirmed HBsAg-positive samples. There were significant differences in the neutralization test confirmation rates among different screening result categories (P<0.05): The group with dual HBsAg reagent reactivity (double reactive) & NAT-negative had the highest confirmation rate (96.9%, 31/32); the group reactive to only reagent 2 (single reactive) had a rate of 25.7% (29/113); while the confirmation rates for samples reactive to only reagent 1 and samples with isolated HBV DNA positivity were extremely low [0(0/34) and 2.4%(4/165), respectively]. The four commercial reagents showed significant differences in their ability to detect confirmed positive samples that were initially single reactive (P<0.05). Conclusion: Given the performance variations among HBsAg screening reagents, thorough performance verification is essential before implementation. When NAT is negative, dual HBsAg reactivity in screening can serve as a basis for confirming infection and directly deferring blood donors. However, confirming infection in donors with single HBsAg reactivity is more challenging, necessitating supplementary tests to rule out infection risk.

OBJECTIVE To evaluate the therapeutic effects and safety of everolimus combined with letrozole and conventional chemotherapy for metastatic or recurrent endometrial carcinoma （EC）. METHODS The clinical and follow-up data of 156 patients with metastatic or recurrent EC admitted to Nanyang Central Hospital from January 2020 to January 2024 were analyzed retrospectively. They were divided into a control group （77 cases） and an observation group （79 cases） according to different therapeutic regimens. The control group received paclitaxel+carboplatin/cisplatin regimen， and concurrently took Letrozole tablets at a dose of 2.5 mg orally once daily； the observation group took Everolimus tablets 10 mg orally， once a day， in addition to the treatment regimen given to the control group. Each treatment cycle lasted 21 days， and both groups of patients underwent continuous treatment for 6 to 8 cycles. The short-term efficacy indicators （objective response rate and disease control rate）， the levels of serum tumor markers [carbohydrate antigen 125， human epididymis protein 4， vascular endothelial growth factor and matrix metalloproteinase-9] and medium- to long-term efficacy indicators [progression-free survival （PFS） and overall survival （OS）] were compared between the two groups. Additionally， the occurrence of toxic and side effects in both groups of patients was recorded. RESULTS The objective response rate （53.16%）， disease control rate （89.87%）， median PFS （6.47 months） and median OS （10.79 months） of the observation group were significantly higher or longer than those （22.08%， 68.83%， 4.63 months， 8.84 months） of the control group （P＜0.05）. Compared with before treatment， the levels of serum tumor markers in both groups decreased significantly after 6 cycles of treatment； the above indexes of the observation group were significantly lower than those of the control group （P＜0.05）. The proportion of patients with stomatitis in the observation group was significantly higher than that of the control group （P＜0.05）， and there was no statistically significant difference in the proportions of patients experiencing other toxic and side effects， such as leukopenia， between the two groups （P＞0.05）. CONCLUSIONS The everolimus combined with letrozole and conventional chemotherapy can effectively improve the short-term efficacy and prolong the survival period in patients with metastatic or recurrent EC， but attention should be paid to the occurrence of toxic and side effects， especially stomatitis.

Objective To investigate the plaque characteristics evaluated by intravascular ultrasound(IVUS)in perimenopausal women with coronary artery disease(CAD)and their impacts on the outcomes of stent implantation.Methods A total of 169 female CAD patients who were admitted to the Fourth People's Hospital of Langfang City from March 2021 to March 2023 were selected as research objects.All the patients underwent coronary angiography(CAG)and IVUS to identify plaque characteristics.Based on the plaque stability,the patients were assigned to stable plaque group(n=105)or unstable plaque group(n=64).Clinical data,IVUS parameters,coronary stent placement,and the incidence of major adverse cardiac events(MACE)were compared between the two groups.Results The plaque burden in the unstable plaque group was higher than that in the stable plaque group,while the minimal lumen area in the unstable plaque group was lower than that in the stable plaque group(P<0.05).The incidences of thrombosis,plaque rupture,and calcification in the unstable plaque group were higher than those in the stable plaque group(P<0.05).The stent placement rate and achievement rate in the unstable plaque group were higher than those in the stable plaque group(P<0.05).Kaplan-Meier survival analysis showed that the incidence of MACE in the unstable plaque group was significantly higher than that in the stable plaque group(HR=2.257,95%CI:1.184-4.303,log-rank P=0.007).Conclusion IVUS shows high value in evaluating plaque characteristics in perimenopausal women with CAD.It can be used as an important tool to optimize treatment strategies.

Objective To study the risk factors of myelosuppression after the chemotherapy in patients with malignant tumors,and to construct a Logistic regression prediction model based on the risk factors.Methods Clinical information of 80 chemotherapy patients from the First Affiliated Hospital of Kunming Medical University during 2021.01-2022.12 was anonymously collected,and the obtained clinical data were used for Logistic regression univariate analysis with the use of SPSS19.0 software to identify the risk factors related to chemotherapy induced myelosuppression.The risk factors were tested in Logistic multi-factor regression analysis and the Logistic regression analysis prediction models were constructed.In addition,clinical information of 40 patients was collected to test the prediction model,then the ROC curve,AUC value and Youden index were obtained.Results Univariate Logistic regression analysis showed that age,bone metastases,alanine aminotransferase(ALT),aspartate aminotransferase(AST),serum creatinine clearance(CCr),serum creatinine(Cr),concurrent radiotherapy(CRT),concurrent immunotherapy(IO),and the recent surgery were associated with the bone marrow suppression after the chemotherapy(P<0.05).The AUC values of the ROC curves of the corres-ponding models were 0.745,0.755 and 0.791,respectively,indicating that the risk of bone marrow suppression was higher when the predictive model p-value was greater than the above values.The Youden indices of the corresponding models were 0.677,0.713 and 0.769,respectively,indicating that the prediction performance of the model was better.Conclusion Age,serum creatinine clearance,liver function,the recent surgery,bone metastasis,concurrent radiotherapy/immunotherapy,and serum creatinine clearance are related to the incidence of chemotherapy induced myelosuppression.When p≥0.745(leukocytes),p≥0.755(platelets),and p≥0.791(anemia)through the predictive model calculations,the risk of leukocyte,platelets,and the anemia-related myelosuppression are significantly increased(≥95%),and appropriate preventive measures are recommended.

Ovarian immature teratoma is a relatively rare malignant ovarian tumor that predominantly occurs in children, adolescents, and young adults. In clinical diagnosis and treatment, tumor marker detection and imaging examinations serve as crucial bases for differentiating mature and immature terotomas. A comprehensive preoperative evaluation followed by the selection of an appropriate surgical approach and extent is key to improving prognosis. Some studies have indicated that for stage Ⅰ ovarian immature teratoma, avoiding adjuvant chemotherapy under close follow-up does not increase the risk of recurrence or affect long-term survival of patients; however, for advanced-stage ovarian immature teratoma, standardized postoperative chemotherapy is still recommended. Some patients may experience benign-malignant transformation of malignant germ cell components after surgery, such as growing teratoma syndrome or squamous cell carcinoma transformation. Due to the rarity of ovarian immature teratoma, current understanding of its pathogenesis and clinical management remains limited. This paper provides a review focusing on key clinical issues related to ovarian immature teratoma and proposes corresponding diagnostic and therapeutic recommendations, aiming to offer references for promoting multidisciplinary collaboration and individualized treatment.

Objective To evaluate the intra-rater and inter-rater consistency of GRBAS and CAPE-V in Chi-nese context.Methods Five experts used the"Voice Assessment Assistant"APP to evaluate voice samples extrac-ted from The Sixth Medical Center of Chinese PLA General Hospital Pathological Voice Database V1.0.Fifty-two cases were used for inter-rater consistency analysis,and 38 cases were used for intra-rater consistency assessment.Intraclass correlation coefficient(ICC)was used for intra-rater and inter-rater consistency analysis of CAPE-V,while Cohen's Kappa method was applied for intra-rater consistency analysis of the five features of GRBAS.Inter-rater consistency analysis for GRBAS used Fleiss Kappa method,and Spearman's correlation analysis was conducted for the same features in both scales.Results The results of intra-rater consistency analysis showed that all six fea-tures of CAPE-V exhibited high consistency,with ICC coefficients of overall severity(OS)=0.80,roughness(R)=0.69,breathiness(B)=0.77,strain(S)=0.75,pitch(P)=0.74,and loudness(L)=0.78.For GRBAS,ex-cept for the features G(0.48)and S(0.45)which showed weaker intra-rater consistency,the rest of the features had poor intra-rater consistency.The results of inter-rater consistency analysis showed that the ICC correlation coef-ficients for all features of CAPE-V were greater than 0.85,indicating a high degree of consistency in the scoring of each feature by different raters.For GRBAS,except for the feature G(correlation coefficient=0.48),the rest of the features had correlation coefficients less than 0.40,indicating that the inter-rater consistency was poor for all features except G.When evaluating the same sample with both GRBAS and CAPE-V,the Spearman correlation co-efficients for the overall voice quality OS/G,roughness R,breathiness B,and strain S were 0.89,0.85,0.91,and 0.91,respectively,suggesting a high degree of correlation between the scoring results of the four features in the two scales.Conclusion In the auditory perceptual assessment of Chinese voice samples,the CAPE-V scale has higher intra-rater and inter-rater consistency compared to the GRBAS scale and is more suitable for clinical practice.

The sentinel lymph node (SLN) is the first group of lymph nodes involved in cancer metastasis. SLN biopsy (SLNB) refers to the positioning and biopsy of the SLNs in the operation using specific tracers to assess the status of lymph node metastasis. It has attracted increasing attention and has been applied in gynecological malignant tumors due to its less invasiveness, fewer complications, and high diagnostic rate. However, it also has produced a series of problems to be explored and solved. This review introduces the existing tracer methods, and discusses the indications of application and the clinical trials of SLNB in vulvar cancer, cervical cancer, and endometrial cancer in order to provide reference for the rational application of SLNB in gynecological malignant tumors.

The proband was a 32-year-old female patient who sought medical attention for over 9 months of pregnancy, reduced fetal movement, and discomfort in the lower abdomen. The proband and her father had normal activated partial thromboplastin time and prothrombin time, decreased fibrinogen activity and antigen levels, and prolonged thrombin time, whereas the test results of her mother were normal. Ultrasonography showed intermuscular vein thrombosis in the left calf of the proband. Peripheral blood DNA was extracted from the proband and her parents, and Sanger sequencing was performed to detect the base sequences of the FGA, FGB, and FGG genes. The proband and her father had heterozygous missense mutations in exon 6 c.615A > C (p. Leu205Phe) and exon 8 c.1121A > C (p. Tyr374Ser) of the FGG gene. Bioinformatics analysis suggested that the two gene mutations may be the pathogenic mechanism of this congenital hypodysfibrinogenemia family.