ObjectiveTo investigate the chemical hazards in the production line of lithium batteries, so as to provide a scientific basis for the management of occupational-health risk and to promote the healthy and sustainable development of the lithium battery industry. MethodsAn on-site survey on the process flow of the production of lithium battery was conducted in an enterprise. Volatile organic compounds (VOCs) in the occupational environment were collected by Summa canisters, carbonates and N-methyl pyrrolidone (NMP) were collected using activated carbon tubes, and airborne metals were collected using filter membranes. VOCs, carbonates and NMP were detected by gas chromatography-mass spectrometry (GC-MS), and airborne metal elements in the dust samples were analyzed by inductively coupled plasma mass spectrometry (ICP-MS). ResultsNon-targeted environmental monitoring results indicated that NMP was detected in the negative /positive electrode coating, assembly and drying filling workstations, dimethyl carbonate (DMC) was detected in the assembly, drying and electrolyte injection workstations, and ethyl methyl carbonate (EMC) was detected solely in the electrolyte injection workstation. Semi-quantitative analyses of VOCs identified 136 pollutants, including acrylonitrile and halohydrocarbons. Quantitative targeted environmental monitoring results revealed the highest geometric mean (GM) concentration of EMC (31.450 mg·m^-3) was found in the assembly and drying workstations, diethyl carbonate (DEC) was detected in all workstations. While vinylene carbonate (VC) and ethylene carbonate (EC) were detected only in electrolyte injection, assembly and drying workstations. NMP was detected in all positive electrode coating samples, with a GM concentration of 5.68 mg·m^-3 (concentration range: 4.0‒ 7.4 mg·m^-³). Lithium was exclusively detected in dust samples from the liquid injection workstation (GM: 0.014 μg·m^-³). ConclusionNMP, EMC, DEC, and other chemicals are identified at the key workstations such as the positive electrode coating, electrolyte injection, assembly and drying in the lithium production line. Furthermore, semi-quantitative VOCs analyses identified 136 pollutants, demonstrating a characteristic of multicomponent chemical exposure.

Objective:To examine the effects of Zishenwan Prescription on bile acid metabolism in mice with diabetic encephalopathy; To explore its mechanism of improvement of diabetic encephalopathy.Methods:Male C57BL/6J mice were used to replicate the mouse model of type 2 diabetes mellitus by using high-fat chow and a single intraperitoneal injection of streptozotocin (120 mg/kg). The mice were screened for diabetic encephalopathy by using the Morris water maze test after 8 weeks of continuous stimulation with hyperglycemia, and were divided into model group and Zishenwan Prescription group according to random number table method, with 12 mice in each group. The mice in the Zishenwan Prescription group were treated with the crude extract of Zishenwan Prescription (9.36 g/kg) by gavage, and the normal group and the model group were treated with the same volume of distilled water once a day for 8 weeks. At the end of the treatment, Morris water maze test was used to investigate the cognitive function of diabetic encephalopathy mice; cresyl violet staining was used to detect the number of granule neurons in the hippocampus; serum and feces were collected to detect the content of bile acids by liquid-liquid coupling; hepatic bile acid synthase CYP7a1 and CYP27a1, farnesol X receptor (FXR), fibroblast growth factor 15 (FGF15), fibroblast growth factor receptor 4 (FGFR4), and ileocecal apical sodium-dependent bile acid transporter protein (ABST) mRNA levels were detected by using fluorescence quantitative PCR assay.Results:Compared with the model group, mice in the Zishenwan Prescription group had shorter evasion latency time ( P<0.05 or P<0.01), decreased time to first reach the platform ( P<0.01), increased number of times to traverse the platform ( P<0.01), and reduced neuronal cell damage in hippocampal area; mice in the Zishenwan Prescription group showed decreased serum and fecal total bile acid content ( P<0.05 or P<0.01); the liver CYP7a1 and CYP27a1 mRNA expressions increased ( P<0.01), and FXR and FGF15 mRNA expressions decreased ( P<0.01); ileal ABST mRNA expression decreased ( P<0.01). Conclusion:Zishenwan Prescription may regulate bile acid metabolism, inhibit FRX-FGF15/FGFR4 signaling and ABST expression to promote new bile acid synthesis and conjugated bile acid reabsorption, and thus improve cognitive function in diabetic encephalopathy mice.

Purpose: This study aimed to determine the optimal cutoff points for age and tumor size of patients with intrahepatic cholangiocarcinoma (ICC) and to establish and verify a predictive nomogram of overall survival at 1, 3, and 5 years. Methods: From the SEER (Surveillance, Epidemiology, and End Results) database, 1,325 ICC patients were selected and randomly divided into training and testing cohorts at a 7:3 ratio. Using the X-tile software, age and tumor size were classified into 3 subgroups: ≤61, 62–74, and ≥75 years and ≤35, 36–55, and ≥56 mm. Subsequently, univariate and multivariate Cox regression analyses were performed using the R software in the training cohort to determine independent risk factors, compile the prediction nomogram, and verify it with the testing cohort findings. Results: The C-indexes of the new prediction nomograms in the training and testing cohorts were 0.738 (95% confidence interval [CI], 0.718–0.758) and 0.750 (95% CI, 0.72–0.78), respectively. Furthermore, the areas under the 1-, 3-, and 5-year receiver operating characteristic (ROC) curves based on the nomogram were 0.792, 0.853, and 0.838, respectively, higher than the ROC based on the 7th and 8th editions of the American Joint Cancer Commission (AJCC) staging system. Conclusion This study established and verified a prognostic nomogram that improved the accuracy of the 1-, 3-, and 5-year survival predictions for ICC patients, compared with that based on the 7th and 8th editions of the AJCC staging system, and can help clinicians make personalized survival predictions.

Objective:To explore the clinical effect of perforator pedicled propeller flap (PPPF) in reconstruction of soft tissue defect in ankle and foot, as well as the role of preoperative ultrasonography in assistance of the location of perforators in donor site.Methods:From January 2017 to June 2023, the Department of Microorthopedics of the Second Affiliated Hospital of Luohe Medical College of Higher Education applied PPPF to reconstruct small and medium-sized soft tissue defects in the ankle and foot for 26 patients. The patients were 17 males, 9 females, aged 18 to 68 years old with 46 years old in average. The defect sites were 3 in forefoot and 6 in midfoot and combined with different degrees of tendon and bone exposure, 17 in ankle and heel and combined with various degrees of bone exposure, 12 with ankle open injury and 5 with Achilles tendon exposure. The area of soft tissue defects ranged from 2.5 cm×1.5 cm to 16.0 cm × 6.5 cm. The width of injury was measured before surgery, and a HHD was used to detect the perforators proximal to the defect site, and then high-frequency CDU was used to locate and confirm the location of the perforator and its alignment, blood flow and diameter. The line drawn between the 2 perforators was set as the axis of flap. The donor site was assessed by a "pinching and lifting" method to determine a direct closure of donor site or to have it closed by a flap transfer. The sizes of flap were from 2.8 cm×1.5 cm to 24.0 cm×7.5 cm. Twenty-two donor sites were directly closed and 4 received flap transfers. Four flaps had sutures with the skin nerves in the recipient site. Masquelet technique was performed in 6 patients with bone defects in the surgery. Patients received outpatient reviews with 1-2 weeks of intervals in the first 2 months after surgery, and X-ray reviews per 1-2 months for those with bone implants until bone healing.Results:All flaps survived successfully without any special treatment after surgery, except 1 flap that had blood vessel congestion and showed swelling and poor blood supply to the distal flap at 24 hours after surgery. The blood vessel congestion was revised by removal of part of the suture at the tip of flap pedicle. One week later, the tip of the flap remained with a small area of necrosis, which was then healed after dressing changes. A total of 21 patients were included in postoperative follow-up with 4 months to 3 years. All of the flaps had satisfactory appearance, colour and texture, and without any ulceration. Three cases of nerve suture were also included in follow-up. According to the assessment criteria of British Medical Research Council (BMRC), the sensory recovery of the flaps was found of S 2 in 1 flap and S 3 in 2 flaps. According to the American Orthopaedic Foot and Ankle Society (AOFAS), the ankle-hindfoot function scores, there were excellent in 16 patient and good in 5 patients. Conclusion:With the assistance of ultrasound, the PPPF can be effectively used in reconstruction of soft tissue defects in ankle and foot.

Objective:To understand the current knowledge, attitude, and practice (KAP) on influenza and influenza vaccine among pregnant women in Suzhou and to analyze its influencing factors to provide technical support data for public health strategies for promoting influenza vaccination in pregnant women.Methods:A questionnaire was designed, and a stratified sampling method was used to conduct a face-to-face survey among pregnant women at different stages of pregnancy who received antenatal examinations at different levels of medical institutions in Suzhou, Jiangsu Province, in 2023. KAP status and influencing factors were analyzed by χ2 test and logistic regression analysis. Results:A total of 2 195 valid questionnaires were collected in this survey. The M( Q1, Q3) of knowledge about influenza and influenza vaccine among pregnant women in Suzhou was 7.60 (5.23, 9.80) points, and the score range was 0.20-14.71 points, the passing rate was 34.12%, the awareness rate of influenza vaccine was 57.45%, and the vaccination rate of influenza vaccine was 1.91% within one year before the survey. The willingness to receive influenza vaccine during pregnancy was only 3.57%. Multivariate analysis of influenza and influenza vaccine-related knowledge scores showed that the passing rate was positively correlated with education level and gestational age. In contrast, family income was negatively correlated with living in rural areas, working as migrant workers, and having no medical insurance. Multivariate analysis of vaccination intention showed that decreased effectiveness of influenza vaccine and increased adverse reactions decreased vaccination intention during pregnancy. Conclusions:The pregnant women in Suzhou pay more attention to influenza, and vaccination rates and intentions are generally low. Pregnant women with early and second trimester of pregnancy, low education, living in rural areas, working as migrant workers, and not purchasing medical insurance are the key groups to popularize the knowledge about influenza and influenza vaccine.

Abstract: Objective To express Mycobacterium tuberculosis Rv2626c protein in Escherichia coli (E. coli) and study the antigenicity of the purified recombinant Rv2626c protein. Methods The amino acid sequence of Rv2626c protein from Mycobacterium tuberculosis H37Rv strain (accession number: CCP45424.1) in GenBank was retrieved and converted into the corresponding DNA sequence according to the codon preference of E. coli. This DNA sequence was synthesized and cloned into pET24a(+) plasmid to construct pET24a(+)-Rv2626c recombinant plasmid. This plasmid was transformed into E. coli BL21(DE3) cells, and the expression of Rv2626c protein was induced under various conditions of isopropyl β-D-thiogalactopyranoside (IPTG) concentrations, temperature, and period. The recombinant Rv2626c protein was identified by SDS-PAGE and Western Blot. The recombinant Rv2626c protein was purified by nickel chelate affinity chromatography and used to immunize violet blue rabbits to prepare anti-Rv2626c anti-serum. The specificity and titer of the serum were respectively detected by Western Blot and enzyme-linked immunosorbent assay (ELISA). Results The recombinant plasmid pET24a(+)-Rv2626c was successfully constructed. SDS-PAGE analysis showed that recombinant Rv2626c was expressed in the recombinant plasmid transformed E. coli with IPTG induction, with a molecular weight of about 14 500, and the size was consistent with the expectation. The optimal expression condition for recombinant Rv2626c protein was at 31 ℃ with 1.0 mmol/L IPTG for 6 hours. The target protein was mainly present in a soluble form, which was consistent with the results of Western blot. The hyperimmunized serum with recombinant Rv2626c protein vaccination showed good specificity, with a titer of 1∶ 256 000 detected by ELISA. Conclusions Mycobacterium tuberculosis Rv2626c protein is successfully expressed in E. coli, and the purified protein has good purity and antigenic activity, laying the foundation for further reveals of its biological functions.

Methods:From Jan 2019 to Nov 2021, 20 patients underwent 3D printed template assisted pre-fenestration of stent graft with reducing-diameter tie technique and branched stents for the EVAR at the three hospitals. The clinical data patients were collected and analyzed.Results:All the 20 cases underwent 3D printed template assisted pre-fenestration of stent graft according to the data of pre-operative the computed tomographic angiography (CTA). EVAR was successfully performed in all patients(included 2 cases with one fenestration,5 cases with 2 fenestration,10 cases with 3 fenestration and 3 cases with 4 fenestration). Fifty-four reinforced fenestrations (20 in right renal artery, 18 in left renal artery, 13 in superior mesenteric artery and 3 in celiac artery) were performed. During the follow-up period (mean 14.6 months), 1 case died, and the one-stage patency rate of splanchnic artery branch stent was 98.1%. Four patients had endoleak, 1 patient died of intracranial hemorrhage during postoperative period. None of patients had postoperative paraplegia or organ ischemia.Conclusions:3D printed template assisted pre-fenestration of stent graft with reducing-diameter tie technique is feasible for EVAR in the treatment of complex abdominal aortic aneurysms and dissections. The technique is capable to reinforce the blood supply of visceral arteries with satisfied short-term effectiveness.Ojective:To evaluate 3D printed template assisted pre-fenestration of stent graft with reducing-diameter tie technique and branched stents for the endovascular aortic aneurysm repair (EVAR).

Objective:To develop a national secondary reference material of Urea and Creatinine in frozen human serum as a standard for metrological traceability.Methods:According to JJF1343-2012 "General and Statistical Principles for Characterization of Reference Materials" and JJF 1006-1994 " Technical Norm of Primary Reference Material ", the homogeneity, stability, and commutability were evaluated;Using the JCTLM recommended methods, the value of the reference materials was assigned through collaboration with 6 accredited reference laboratories from Guangdong Provincial Hospital of Chinese Medicine, Beijing Aerospace General Hospital, Shenzhen Mindray Bio-Medical Electronics, Maccura Biotechnology, Beijing Leadman Biochemistry, and Zhejiang MedicalSystem Biotechnology. Uncertainty components including inhomogeneity, stability and value assignment were evaluated.Results:The results of one-way analysis of variance of homogeneity for the reference materials showed P>0.05, and the stability evaluation was less than the critical value of the t-test. The measured values were in the 95% confidence interval in the four conventional detection systems for commutability, and the certified values and expanded uncertainties were urea:(14.7±0.3) mmol/L ( k=2),Cr:(313.9±14.5) μmol/L ( k=2). Conclusion:The prepared secondary reference materials of urea and creatinine had promising homogeneity, stability, and commutable, the values of urea and creatinine concentration in reference materials were accurate and reliable.

Ischemic stroke (IS) is a severe cerebrovascular disease with a high incidence, mortality, and disability rate. The first-line treatment for IS is the use of recombinant tissue plasminogen activator (r-tPA). Regrettably, numerous patients encounter delays in treatment due to the narrow therapeutic window and the associated risk of hemorrhage. Traditional Chinese medicine (TCM) has exhibited distinct advantages in preventing and treating IS. TCM enhances cerebral microcirculation, alleviates neurological disorders, regulates energy metabolism, mitigates inflammation, reduces oxidative stress injuries, and inhibits apoptosis, thereby mitigating brain damage and preventing IS recurrence. This article summarizes the etiology, pathogenesis, therapeutic strategies, and relationship with modern biology of IS from the perspective of TCM, describes the advantages of TCM in the treatment of IS, and further reviews the pharmacodynamic characteristics and advantages of TCM in the acute and recovery phases of IS as well as in post-stroke complications. Additionally, it offers valuable insights and references for the clinical application of TCM in IS prevention and treatment, as well as for the development of novel drugs.

Modern medicine has made remarkable achievements in safeguarding people's life and health, however, it is increasingly found that in the face of complex diseases, selective targeting of single target is often difficult to produce a comprehensive rehabilitation effect, and is prone to induce drug resistance, toxic side effects. Traditional Chinese medicine (TCM) has a long history of clinical application, and its clinical value in the treatment of complex diseases such as cardiovascular and cerebrovascular diseases, digestive diseases, skin diseases, rheumatism and immunity diseases, and adjuvant treatment of tumors has been proven to have obvious advantages. However, its modern research is relatively lagging behind, and in the face of the aging society and the characteristics of the modern disease spectrum, the traditional knowledge-driven research paradigm seems to be stuck in a bottleneck and difficult to make greater breakthroughs. Focusing on the key issues of TCM development in the new era, the clinical value-oriented strategy becomes to be a new research paradigm of TCM inheritance and innovation development, and dominant diseases would be the focus of the TCM inheritance and innovation development, which has been highly valued in recent years by the TCM academia and the relevant national management departments. Based on the clinical value, a series of policies are formulated for the selection and evaluation of the TCM dominant diseases (TCMDD), and exploratory researches about the clinical efficacy characteristics, the modern scientific connotation interpretation were carried out. The clinical value-oriented research paradigm of TCMDD inheritance and innovation development has been initially formed, which is characterized by strong policy support as the guarantee, systematic and standardized selection and evaluation methods as the driving force, scientific and effective research on internal mechanisms as the expansion, and effective clinical guidelines and principles as the transformation, which is of great value in promoting the high-quality development of the industries and undertaking of TCM. In this paper, the main policy support, selection and evaluation methods, therapeutic effect characterization, and modern scientific connotation research strategies of TCMDD in recent years have been comprehensively sorted out, with a view to providing the healthy and benign development of the research on TCMDD.