Abstract Vanadium is widely used in the steel manufacturing, aerospace and medical industries because of its good plasticity and malleability, and is released into the environment in large quantities. Human were exposed mainly through environmental and occupational exposure. Vanadium and its compounds can cause multi-system damage to the reproductive, respiratory, neurological, and immune systems, and the toxic mechanisms may be related to oxidative stress, epigenetic damage, DNA damage and repair, apoptosis, and dysregulation of cell proliferation. This article summarizes the health hazards caused by vanadium exposure and its mechanism, providing the reference for the studies into the toxic effects of vanadium and its compounds.

Acupuncture Therapy ; Adult ; Female ; Humans ; Psoriasis ; therapy

Purpose To explore the clinical value of131I-whole body scan (131I-WBS) and 18F-FDG PET/CT on the metastatic management of patients with differentiated thyroid cancer (DTC) after operation.Materials and Methods Serum thyroglobulin (Tg) of 27 patients after DTC surgery was measured one day before131I therapy, and the patients underwent131I-WBS on 3-5 days after131I therapy. According to the results of Tg and 131I-WBS, all the patients were divided into 4 types as follows: type I: Tg (+),131I-WBS (-); type II: Tg (+),131I-WBS (+); type III: Tg (-),131I-WBS (+); and type IV: Tg (-), 131I-WBS (-). Then the patients received18F-FDG PET/CT scan within a week after 131I-WBS. The results of131I-WBS and18F-FDG PET/CT scan were analyzed according to histopathologic findings or clinical and imaging follow-up of at least 6 months as diagnosis standard.Results The examinations uncovered that metastasis occurred in 52 lesions of 22 cases out of the 27 cases.131I-WBS revealed 24 metastatic lesions (46.2%) in 8 cases (36.4%), and18F-FDG PET/CT showed 35 metastatic lesions (67.3%) in 15 cases (68.2%), the difference with statistic significance (χ2=4.46 and 4.74,P<0.05). Metastasis were confirmed in 13 type I cases (100.0%); 5 type II cases (100.0%); 3 type III cases (100.0%) and 1 type IV case (16.7%), respectively. The rate of detecting metastasis by 18F-FDG PET/CT was 100.0% in type I, 20.0% in type II, 0% in type III respectively, the difference with statistic significance (χ2=9.14 and 10.11,P<0.05); and 100.0% in type IV, the difference without statistic significance (χ2=1.25,P>0.05). Based on that, therapeutic plans were modified for 13 patients with type I metastasis and 1 patient with type IV metastasis.Conclusion131I-WBS and18F-FDG PET/CT are complementary for detecting metastatic lesion and help to decide the following treatment of DTC patients after surgery. Moreover,18F-FDG PET/CT shows advantages in detecting metastatic lesion in Tg-positive and negative131I-WBS type of DTC patients after surgery, thus can provide an important clinical guidance for this type of patients.

Objectives To diagnose and test cervical artery dissection (CAD) during the follow-up by color Doppler flow imaging (CDFI) and to analyze and compare the differences of internal carotid artery dissection ( ICAD) and stenosis degree of vertebral artery dissection ( VAD) , and lumen recanalization. Methods From January 2016 to December 2018 , a total of 136 consecutive patients (160 dissecting vessels) with CAD of intramural hematoma type diagnosed by CDFI and confirmed by high-resolution MRI and/or CT angiography in Xuanwu Hospital .Capital Medical University were enrolled retrospectively. They were divided into ICAD group (n =66, with 75 ICADs) and VAD group (n =70,with 85 VADs).The gender, age,risk factors,cerebral ischemic symptoms, and CDFI manifestations were compared in the patients between the two groups. They were followed up at 3,6, and 12 months after onset. The patients with CAD were reexamined, and the difference of recanalization rate between the two groups was compared. Results There was a statistically significant difference in the mean age and proportion of hypertension between the ICAD group and the VAD group (both P < 0. 05 ) There was no significant difference in the side of lesion between two groups of patients with vascular lesions ( P > 0. 05); there was significant difference in the degree of vascular stenosis (P <0. 01). The degree of stenosis in the ICAD group was ≥70% or the number of occluded vessels was significantly higher than that in the VAD group (88. 0% [66/ 75] and 48. 2% [41/85],respectively). Of the 136 patients,at the end of follow-up,a total of 105 patients with 126 lesion vessels were followed up,including 58 ICADs and 68 VADs. At the follow-up of 3 months and 6 months after onset,the complete recanalization rate of the lesion vessels in the VAD group was significantly higher than that in the ICAD group (46.6% [27/58] vs. 21.7% [ 10/46] ,and 58.1% [37/63] ts. 37.3% [ 19/ 51 ]respectively) ,the difference was statistically significant values were 6. 891 and 5. 201 respectively, P values were 0. 009 and 0. 023 respectively);at the follow-up of 12 months after onset, there were no significant difference in the complete recanalization rate of the lesion vessels (60. 3% [41/68] vs. 53.4% [31/58]) and the degree of residual stenosis of lumen (x2values were 0.599 and 0.297 respectively; all P >0. 05) between the VAG group and the ICAD group. Conclusions ICAD was different from VAD in the degree of lumen stenosis and the rate of lumen recanalization at different follow-up time. CDFI had good test and follow-up re-examination values for CAD.

Objective To investigate the biodistribution of intratumoral administerd~(131)Ⅰ-labeled human-mouse chimeric monoclonal antibody (chTNT) in patients with advanced lung carcinoma. Methods Eleven patients enrolled had cytological and histological confirmed diagnoses of either stage Ⅲ b or stage Ⅳ inoperable lung carcinoma. Intratumoral injection was directed by thoracic CT-guided catheter using a multi-holed needle. The dose for each patient was 18.5 - 37 MBq/cm~3 tumor mass. Blood samples were drawn at different time intervals for up to 13 days, and urine samples were collected for up to 11 days after injection for pharmacokinetic studies. In vivo stability was examined by HPLC by analyzing serum and urine, which were found to contain~(131)Ⅰ-chTNT. Whole body images were taken for quantitative organ and tumor biodistribution studies. Results In all 11 patients,~(131)Ⅰ-chTNT was the major component of the radiolabel in serum. Within 96 hours after administration, it was 100% stable. Plasma disappearance curves of ~(131)Ⅰ-chTNT were best fit by a two-exponential model in all patients with T_(1/2kα) of (0. 89±0. 17) h and T_(1/2β) of (86.88 ± 25.97)h. Free Ⅰ was the only metabolite of Ⅰ-chTNT that appeared in urine. A biodistribution study demonstrated excellent localization of the radioactivity in tumors. The accumulated radioactivity in urine at 264 h was (58.37 △Corresponding author E-mail:chen. shaoliang@zs-hospital. sh. cn±17.45) % of the injection dose. There was (51.05±8.41)%ID ,~(131)Ⅰ-chTNT in the tumor at 30 min after injection, and the tumor/lung (T/N) ratio was 63.87 ± 25.71. It remained (3.47 ± 3.27) %ID at 264 h,and the T/N ratio was 9. 61 ± 11.00. Among the main target organs, accumulation of the radiolabeled antibody was mainly found in lungs, liver, heart, kidneys, spleen and thyroid.Conclusions Pharmacokinietics of ~(131)Ⅰ-chTNT follows a two-exponential model. According to its long preservation in tumor tissue, intratumoral injection of~(131)Ⅰ-chTNT is good for tumor therapy.

Objective: To analyze the semen quality parameters of sperm donor volunteers, so as to provide insights into male infertility control and related research. Methods: A total of 155 sperm donors were recruited from the Human Sperm Bank of Zhejiang Province using the convenience sampling method from January to March 2021. Demographic information were collected through questionnaire surveys. Semen were collected, and parameters including semen volume, sperm concentration, total number of sperm, forward motility rate and total sperm viability were measured. Semen quality was evaluated according to the WHO Laboratory Manual for the Examination and Processing of Human Semen. : Results Conclusion There were 20.65% of the 155 sperm donors with unqualified semen, and the unqualified rates of forward motility rate and total sperm viability were relatively high.

Objective To study the effects of hypothermia on learning and memory ability and mRNA expression of fusion gene and fission gene of mitochondria in hippocampus of rats.Methods 32 Wistar rats were randomly divided into 4 groups according to low-temperature exposure time in the test:high-exposure group(low-temperature exposure for 24 h/d),middle-exposure group(low-temperature exposure for 12 h/d),low-exposure group(low-temperature exposure for 6 h/d) and control group.The temperature of low-temperature exposure was 0-5 ℃.The total test time was 45 d.Morris water maze test was performed on each group from the fifth day before the end of the low-temperature test to the first day after the low-temperature test.After the water maze test,the mRNA expressions of mitochondrial fusion genes (Mfn1,Mfn2) and fission genes(Fis1,Drp1) in hippocampus were detected by RT-qPCR.Results Compared with the control group,the escaping latency of the high-exposure group and the middle-exposure group at the first day and the fifth day of water maze test were significantly longer than those in the control group,and the difference was statistically significant(P＜0.05,P＜0.01).The escaping latency of the sixth day and the number of platform crossings at the beginning of the water maze test were significantly different from those in the control group(P ＜0.05,P＜0.01).Compared with the control group,the escaping latency of the high-exposure group and the middle-exposure group was significantly prolonged on the sixth day,and the number of the platform crossings decreased significantly.The difference was statistically significant (P＜ 0.05,P＜ 0.01).The high,middle and low-exposure group of mitochondrial fusion and fission genes mRNA expressions were as follows respectively:Mfn1:4.05 ±0.21,1.51±0.23,1.17 ±0.83;Mfn2:5.38 ±0.74,0.84 ±0.53,0.47 ±0.33;Fis1:1.65 ±0.58,0.49 ± 0.42,0.40±0.32;Drp1:4.11 ±0.37,0.99 ±0.82,0.55 ±0.29.Compared with the control group,the mRNA expression of the fusion and the fission genes in the high-exposure group increased significantly(P＜0.01).Conclusion The abnormalities of mitochondrial fusion and fission gen mRNA expression in the hippocampus may be one of the mechanisms of the decline of learning and memory functions caused by low temperature exposure.

Objective: The feasibility of applying DR card in the quality control of chest film of pneumoconiosis was discussed by using the image detail change of 1 degree star card. Methods: With different types of grid DR device for star card photography, to ensure that the grid bars are orthogonal to the direction of star card image quality is stable, conforms to the DR standard of pneumoconiosis image edge enhancement processing, analysis of the relationship between lung tissue image changes and changes with fuzzy star card. By 3 physicians blind reading way, compare the use of auxiliary judgment and direct x-ray star catu judgment in the accuracy evaluation of whether the use of edge enhancement function. Results: Fuzzy images of star card were consistent with lung tissues details as DR images were treated with edge enhancement. The fuzzy zore was closer to the start card center with more image edge enhancement and more image details sharpening. on the opposite, it was farther from the center with less with edge enhancement and less image sharpening. It's valuable for star card analysis to evaluate the accuracy of the application of image edge enhancement (P<0.001). Conclusion To determine whether the use of X-ray star catu edge feasible enhancements can be used for health supervision and quality supervision and quality control of the institution itself of radiology.

BACKGROUNDTo analysis and evaluate the efficacy of I-131 labeled chimeric TNT antibody ( ¹³¹I-chTNT MAb) targeting therapy in advanced lung cancer, and then choose the best way of administration.

METHODSForty-three patients with advanced lung cancer were treated by 3 different protocols using ¹³¹I-chTNT MAb. Their diagnosis was confirmed by histology and there were 30 cases in stage IIIB and 13 cases in stage IV, 32 cases were newly diagnosed and 11 cases were retreated. All patients were divided into three groups and treated with different methods: (1)iv infusion (n=22); (2) intratumoral injection (n=16); and (3) combination iv (25% of total dosage) and intratumoral (75%) infusion (n=5). All patients received radiolabeled MAb at a total dosage of 2.96×10⁷ Bq/kg on days 1 and 14.

RESULTSThere were 2 complete response (4.7%), and 11 partial response (25.6%), the total response rate was 30.2% (13/43) in all patients. For those patients receiving iv injection alone, the response rate was 9.1%. For those patients receiving intratumoral injection alone, the response rate was 56.3%. There was significant difference between them (P < 0.01 ). The main toxicity was reversible bone marrow suppression, 2 cases (4.7%) with grade III leukopenia and 3 cases (7.0%) grade III thrombocytopenia.

CONCLUSIONS¹³¹I-chTNT has significant therapeutic effects on advanced lung cancer and the intratumoral injection is the best way of administration.

Objective:To analyze the imaging characteristics of invasive fibromatosis from breast parenchyma, and to explore the clinical value of multimodal ultrasound.Methods:The two-dimensional, color Doppler and elastic imaging sonographic manifestations and pathological features of 12 cases of breast invasive fibromatosis included in the Affiliated Hospital of Jining Medical College from October 2015 to October 2020 were studied retrospectively.Results:Two dimensional ultrasound showed that 12 cases of breast invasive fibromatosis grew in parallel, with different sizes, unclear boundary and no complete capsule. The edge morphology of 7 cases (7/12) showed crab foot like changes; The tumor showed solid heterogeneous hypoechoic, punctate hyperechoic in 3 cases (3/12), and echo attenuation behind the tumor in 3 cases (3/12); The blood flow in the tumor was mainly grade 1-2 (9/12). Twelve tumors were examined quantitatively by virtual touch tissue quantifification. The shear wave velocity was (3.08±0.75)m/s. The diagnostic accuracy of multimodal ultrasound in invasive fibromatosis of breast (10/12) was significantly higher than that of conventional ultrasound (3/12, χ 2=8.224, P=0.004). The gross manifestation of the tumor: the section was gray or gray yellow, with unclear boundary and no capsule; Microscopic findings: fascicular fibroblasts and myofibroblasts proliferated, accompanied by varying degrees of glassy degeneration, acellular atypia, nuclear division and necrosis. Conclusions:Conventional ultrasound is difficult to distinguish invasive fibromatosis and malignant tumor of breast, and its ultrasonic manifestations are closely related to pathological features. The combined application of multimodal ultrasound can significantly improve the diagnostic coincidence rate of the disease and has high clinical application value.