Objective To observe the influence of recombinant human thyrotropin(rhTSH)on serum concentration of endogenous thyrotropin(TSH), free triiodothyronine(FT3), free thyroxine(FT4), thyroglobulin antibody(TGAb), and thyroglobulin(Tg). To evaluate the efficacy of rhTSH-aided radioiodine treatment in patients with differentiated thyroid carcinoma(DTC). Methods The study recruitment took place between November 2007 and March 2009. 62 patients(including 45 females)with biopsy confirmed DTC had undergone total or nearly total thyroidectomy, and received 131I treatment. 31 patients(including 22 females), median age of 45 years(23-72), received radioiodine treatment 4 weeks after L-thyroxine(T4)withdrawal. The other 31 patients(including 23 females), median age of 44 years(14-70), underwent rhTSH-aided radioiodine treatment. Before and after rhTSH injection, serum TSH, FT3, FT4, TGAb, and thyroglobulin were tested. Post-radiotherapy whole body scan was performed 5 to 7 days after radioiodine treatment and qualitatively and blindly evaluated by two nuclear medicine physicians. Follow-up took place 6 to 12 months after radioiodine treatment. The efficacy of rhTSH-aided radioiodine treatment was evaluated by whole body scan with diagnostic dose radioiodine. SPSS 13.0 statistical software was applied. Results (1)Before and after rhTSH-aided radioiodine treatment, the serum TSH was(1.08±4.01)vs(140.26±27.20)mIU/L(P＜0.05), thyroglobulin(23.75±132.92)vs(169.58±178.49)μg/L(P＜0.05), FT3(4.52±1.16)vs(4.42±1.11)pmol/L(P＞0.05), and FT4(15.09±5.83)vs(13.66±5.85)pmol/L(P＞0.05),respectively.(2)rhTSH-aided radioiodine ablation treatment had the same effect as L-T4withdrawal aided. The complete response ratio was 77.4% vs 71.0%(P＞0.05)by radioiodine whole body scan of diagnostic dose. Conclusion rhTSH-aided radioiodine treatment of DTC was effective and safe, and did at least at equivalent degree as did L-T4withdrawal. Furthermore, Serum thyroglobulin level could be effectively stimulated by rhTSH with tumor relapse or metastasis.

In this research was developed high efficiency method using 125I for directly labeling KH901, a tumor-specific oncolytic recombinant adenovirus, biodistribution of 125I-labeled compound in normal mice was investigated. 125I-KH901 was prepared by N-bromosuccinimide labeling method to find the optimal ratio of labeling response. The compounds were isolated and purified by Sephadex-G10 agarose and the radiochemical purity of compounds was analyzed by paper chromatography. The radioactivity biodistribution in mice was measured at different times after caudal vein injection with 0.1ml 125I-KH901. The labeling yield of 125I-KH901 was 78% and the radiochemical purity was 95% after purification by Sephadex-G10 agarose. Biodistribution revealed that the uptake of 125I-KH901 in liver was higher than in other organs at all time points of the experiment. 125I-KH901 was mainly concentrated in liver, kidneys, spleen and lung. It can be seen that N-bromosuccinimide labeling method is an optimal method with simple steps and high labeling yield in labeling KH901 with 125I. 125I-KH901 has a biodistribution trait which is an advantage to treating liver tumors.
Adenoviridae ; genetics ; physiology ; Animals ; DNA, Recombinant ; genetics ; Female ; Genetic Vectors ; genetics ; Iodine Radioisotopes ; pharmacokinetics ; Male ; Mice ; Mice, Inbred BALB C ; Oncolytic Viruses ; genetics ; physiology

For a long time past viruses have been recognized as being tumoricidal. At present, researchers are still pursuing studies and constructing more suitable oncolytic viruses for treating different malignant tumors. Herpes simplex virus type 1 (HSV-1) has been known as the most potential oncolytic virus among all the viruses. In this overview, we summarize the current situation of oncolytic viruses, the biology of HSV-1, its construction and application of its recombinant, and we debate on the feasibility and prospect of HSV-1 mutants labeled with radionuclides for cancer therapy.
Herpesvirus 1, Human ; genetics ; physiology ; Humans ; Mutation ; Neoplasms ; radiotherapy ; Oncolytic Virotherapy ; methods ; trends ; Oncolytic Viruses ; genetics

Objective To compare the diagnostic value of ventilation/perfusion ( V/Q) combined with pulmonary perfusion single photon emission computed tomography combined with CT ( SPECT/CT) fu-sion tomography imaging and computed tomographic pulmonary angiography ( CTPA) in evaluation of pulmo-nary embolism. Methods We retrospectively analyzed 60 patients with clinically suspected pulmonary em-bolism diagnosed in Shanxi Dayi Hospital from May 2015 to May 2017. All patients underwent pulmonary V/Q imaging and lung perfusion SPECT/CT fusion tomography, and CTPA inspections were completed with-in 3 days. The final clinical diagnosis and follow-up confirmed the presence or absence of pulmonary embol-ism. The diagnostic efficacy of two imaging methods for pulmonary embolism were calculated and compared. Results Of the 60 cases of patients, 33 cases were diagnosed with pulmonary embolism; the sensitivity, specificity, and accuracy of V/Q combined with pulmonary perfusion SPECT/CT fusion tomography were 96. 97％ (32/33), 92. 59％ (25/27) and 95％ (57/60), respectively; the sensitivity, specificity, and accuracy of CTPA were 81. 82％ (27/33), 92. 59％ (25/27) and 86. 67％ (52/60), respectively; both have no diagnostic uncertainty, there was no significant difference in the qualitative diagnosis of pulmonary embolism between the two examination methods ( P >0. 05 ) . V/Q combined with pulmonary perfusion SPECT/CT fusion tomography found 253 lung segment and 50 unmatched sub-pulmonary segments, including 15 V/Q mismatch lung segment and 5 sub-segment caused by lung lesions which were confirmed by lung perfusion SPECT/CT fusion image ( 5 interlobular or pleural effusion, 4 local emphysema and pulmonary bulla, 3 interlobular hypertrophy, 8 pulmonary parenchymal inflammation); CTPA found 3 sub-segmental pulmonary filling defects, 6 cases of false-negative cases were multiple sub-pulmonary segment pulmonary embolism. Conclusions V/Q combined with pulmonary perfusion SPECT/CT fusion tomography is similar to CTPA in diagnosing pulmonary embolism, and both of them have better diagnostic efficacy; the former has advantages in the diagnosis of sub-pulmonary segment pulmonary embolism, and can exclude false-posi-tive diagnoses due to other lung lesions and provide additional diagnostic information for lung disease.

Objective: To compare the clinical features of papillary thyroid microcarcinoma (PTMC) and non-microcarcinoma papillary thyroid carcinoma (PTC). Methods: Clinical data of 522 patients (156 males, 366 females, age: 16-77 years) with PTC treated with ¹³¹I from January 2014 to September 2018 were analyzed retrospectively. Patients were divided into PTMC group (46 males, 139 females, age: (38.5±6.5) years; tumor diameter≤1.0 cm) and non-microcarcinoma PTC group (110 males, 227 females, age: (40.5±4.5) years; tumor diameter>1.0 cm). General information and TNM status of patients were compared. The t′ test and χ² test were used to analyze the data. Results: Patients was relatively young in PTMC group (t′=2.20, P<0.05), but no difference was observed in gender between 2 groups (χ²=3.45, P>0.05; mostly females). The incidence of extraglandular invasion in PTMC group was significantly lower than that in PTC group (33.51%(62/185) vs 56.08%(189/337); χ²=24.37, P<0.01), mainly in peripheral muscle/fibrous adipose tissue (χ²=11.01, P<0.01) and tracheal infiltration (χ²=5.35, P<0.05). Nodular goiter and Hashimoto′s thyroiditis were commonly shown in both groups, and the tumor distribution was bilobar and/or multi-foci. The rate of regional lymph node metastasis was higher in non-microcarcinoma PTC group (88.43% (298/337) vs 82.16% (152/185); χ²=3.94, P<0.05), and central lymph node metastasis occurred more in PTMC group (χ²=5.75, P<0.05). Besides, non-microcarcinoma PTC group was likely to involve more lymph node areas (χ²=5.69, P<0.05) and distant metastasis (9.50% (32/337) vs 2.16% (4/185); χ²=10.00, P<0.01). There were no differences of extraglandular infiltration, tumor distribution or lymph node metastasis between moderate- and high-risk PTMC and non-microcarcinoma PTC groups (χ² values: 0.01-3.33, all P>0.05). Conclusions Clinical characteristics of PTC can be influenced by tumor diameter. The features of primary tumor and lymph node metastasis between patients with moderate- and high-risk PTMC and non-microcarcinoma PTC patients are similar, which suggests that ¹³¹I therapy is necessary to patients with moderate- and high-risk PTMC.

This review aims to evaluate the quality of studies assessing the value of 99mTc-MIBI myocardial perfusion imaging in the diagnosis of coronary artery disease. OVID (1956 to 2006), CBMdisc (1978 to 2006), CNKI (2005 to 2006) and VIP (2005 to 2006) for relevant studies in English and Chinese were searched and identified. Quality assessment of diagnostic accuracy studies (QUADAS) items were used. Studies were classified and Meta-disc software was used to analyze sensitivity, specificity, positive likelihood ratio and negative likelihood ratio for the pooled analysis and heterogeneity test, then Asymmetric SROC curves were drawn for those without heterogeneity. In 29 articles included, the results of the pooled analysis showed that, as for rest, exercise and drug myocardial perfusion imaging, the pooled LR + were 2.209, 4.334 and 5.508, the pooled LR- were 0.224, 0.141 and 0.195, and for dipyridamole myocardial perfusion imaging, the pooled LR+ and LR- were 5.031 and 0.193, respectively. Besides, for stress myocardial perfusion imaging among the patients without myocardial infarction history, the pooled LR+ and LR- were 6.176 and 0.199, respectively. The biases from the 29 studies were mainly due to diagnostic test results review bias; variations were probable and were correlated with the spectrum of disease and inclusion criteria; the quality of report was moderate. The conclusion is that 99mTc-MIBI stress MPI, especially dipyridamole MPI, is valuable for diagnosing coronary artery disease.
Coronary Artery Disease ; diagnostic imaging ; Female ; Humans ; Male ; Myocardial Perfusion Imaging ; methods ; Radiopharmaceuticals ; Technetium Tc 99m Sestamibi

In order to evaluate the biological activity in vitro and the antitumor effects of 131I-conditionally replicating oncolytic adenovirus KH901 on HepG2 human hepatoma xenografts, the leves of GM-CSF expression were determined by ELISA method. A panel of tumor and normal cells was infected with recombinant adenovirus KH901 at MOI of 10 PPC. The medium was harvested to determine the bioactivity of GM-CSF after 24 hours. Nude mice bearing HepG2 human hepatoma xenografts were given 131-KH901. Antitumor effects were assessed using endpoints of tumor growth delay. The data showed that after 24 hours 131-KH901 replicated hugely in tumor cells and produced significant amount of GM-CSF 183.27 +/- 6.90 pg/ml, while producing very small amount of GM-CSF 20.44 +/- 0.77 pg/ml in normal cells. In the treatment of tumor, 131I-KH901 showed higher restraint rate (71.3%) compared to 131I (22.7%) or KH901 (52.7%). Therefore, 131-KH901 can inhibit the growth of human hepatoma cell in nude mice and it may be a potential drug for treating liver cancer.
Adenoviridae ; genetics ; metabolism ; Animals ; Female ; Granulocyte-Macrophage Colony-Stimulating Factor ; genetics ; metabolism ; Hep G2 Cells ; Humans ; Iodine Radioisotopes ; Liver Neoplasms, Experimental ; diagnostic imaging ; pathology ; virology ; Male ; Mice ; Mice, Nude ; Oncolytic Virotherapy ; Oncolytic Viruses ; genetics ; metabolism ; Radionuclide Imaging

Objective: To analyze and discuss the clinical value of single photon emission computed tomography(SPECT)/CT fusion imaging in differentiating benign and malignant spinal lesions. Methods: From January 2017 to January 2018, 70 cases with benign and malignant spinal lesions in Shanxida Hospital were studied.SPECT/CT fusion imaging and SPECT examination were used to compare the diagnosis results between the two groups. Results: After SPECT diagnosis, a total of 98 bone metastatic lesions were detected, including 10 false positive lesions, 60 benign lesions and 28 false negative lesions.After SPECT/CT fusion imaging, there were 100 lesions, including 4 false positive lesions, 59 benign lesions and 37 false negative lesions.In this study, a total of 145 lesions were found in 70 patients with benign and malignant spinal lesions, including 95 benign lesions and 50 malignant lesions.The specificity, sensitivity and accuracy of SPECT/CT fusion imaging [95.79%(91/95), 92.00%(46/50), 93.79%(136/145)] were higher than those of the control group [82.11%(78/95), 64.00%(32/50), and 82.76%(120/145)], the differences were statistically significant(χ²=9.048, 11.422, 9.578, all P<0.05). Conclusion In the diagnosis of benign and malignant spinal diseases, SPECT/CT fusion imaging can accurately distinguish benign and malignant lesions, and clearly reflect the development of the disease, which lay a solid foundation for good treatment in the future.

Objective·To investigate the effect of ceria nanoparticles-polyethylene glycol(CeNP-PEG)on scavenging reactive oxygen species(ROS)and alleviating disease activity in dextran sulphate sodium(DSS)-induced colitis mice.Methods·CeNP was synthesized with the hydrates of cerium acetate,oleamine,and xylene,which was modified with polyethylene glycol-stearyl phosphatidylethanolamine(mPEG-DPSE)to obtain CeNP-PEG.Then CeNP-PEG was purified.The particle size and zeta potential of CeNP-PEG were measured by using transmission electron microscopy(TEM)and dynamic light scattering(DLS).Mouse macrophages(Raw264.7)were cultured in vitro and induced to a pro-inflammatory phenotype(M1 phenotype).M1 macrophages were treated with 0.5 μg/mL and 1.0 μg/mL CeNP-PEG,respectively,and then Western blotting was used to detect the expression changes of the proteins related with nuclear factor-κB(NF-κB)signaling pathway.DSS-induced colitis mice models were constructed,and CeNP-PEG(1.0 mg/mL)was intravenously administrated for 3 times via tail vein during the modeling period.Meanwhile,the body weight,fecal characteristics,and frequency of rectal bleeding in mice were monitored in the normal control group(Normal group),the model group(DSS group),and the CeNP-PEG treatment group.The disease activity index(DAI)was calculated to evaluate the intestinal inflammation.The level of ROS in mouse intestinal tissues was detected by dihydroethidine(DHE)staining and the mRNA expression levels of inflammatory cytokines interferon-γ(Ifn-γ),interleukin-6(Il-6),Il-1β and tumor necrosis factor-α(Tnf-α)were detected by real-time quantitative PCR(RT-qPCR).Results·The hydrated particle size of synthesized CeNP-PEG was(6.96±0.27)nm,and the average zeta potential was(-6.02±1.31)mV.Western blotting results showed that the expression of p-P65 increased in the pro-inflammatory macrophages compared with the control group.The expression of NF-κB inhibitor-α(IκB-α)decreased,and their expressions tended to recover after the intervention of different concentrations of CeNP-PEG.In the DSS-induced colitis models,mice in the CeNP-PEG treatment group lost less weight than those in the DSS group(P= 0.000)and had lower DAI scores(P=0.000).The RT-qPCR results of intestinal tissues showed that the mRNA levels of Ifn-γ,Il-1β,Il-6 and Tnf-α in the DSS group were significantly up-regulated compared with those in the Normal group(P=0.000),and all of them significantly decreased in the CeNP-PEG treatment group.The results of DHE staining showed that the fluorescence intensity of intestinal tissues in the DSS group was significantly enhanced than that in the Normal group,and the fluorescence intensity decreased in the CeNP-PEG treatment group.Conclusion·CeNP-PEG can inhibit the expression of intestinal inflammatory factors and the activation of NF-κB-related inflammatory pathway of pro-inflammatory macrophages,eliminate intestinal ROS,improve the intestinal inflammatory microenvironment,and alleviate the disease activity of DSS-induced colitis in mice.