Objective To understand the emission rate and the attenuation rule of formaldehyde in the artificial woodiness boards for sell in China and to study the efficiency of formaldehyde-eliminator. Methods With the small Climate-Chamber and 4160 formaldehyde-analyzer, quantity of formaldehyde released from some kinds of woodiness boards was analyzed under the different condition of temperature, relative humidity and ventilation cycle. Results The emission rate of formaldehyde in most veneers was over 1.2 mg/(m2?h), in most of moderate density fibreboard, it was 0.7～1.0 mg/(m2?h) and in the veneer for medical application, it was 0.3～0.9 mg/(m2?h). Formaldehyde emission rates of all the three kinds of woodiness boards investigated in the present study showed a fall of 75% in a period of time after made, and met the National Standard of China. The formaldehyde eliminator could reduce the emission rate of formaldehyde remarkably, however the effect perhaps weakened in a short time. Conclusion The formaldehyde emission rates in all kinds of woodiness boards investigated in the present paper are different, they exceed the National Standard of China while the boards made immediately and will reduce after 10-15 days in a given condition. The formaldehyde eliminator used in the study shows a remarkable effect but lasts only a short time.

The distribution of neuropeptide Yimmunoreactive (NPY-IR) fibers in the spleen of rat was investigated by using the immunohistochemical ABC method combine with glucose oxidase-DAB-nikel enhancement technique. The results demonstrated that the rat spleen is richly innervated by NPY-IR fibers. The NPY immunoreactive nerve fibers are mainly distributed along the branches of the arteries, especially surrounding the central arterioles. They are also observed in the connective tissue capsule, the lymphoid tissue of the white pulp, red pulp and marginal zone and around the splenic sinusoid. The positive fibers are closely related to the blood vessels and lymphocytes in the spleen, which suggested that these fibers may regulate the development and function of splenic lymphocytes. NPY may have a direct or an indirect effect on regulating blood circulation of the spleen and the lymphocytes.

In this study, the distribution of calcitonin gene-related peptide immunoreactive (CGRP-IR) nerve fibers in the spleen of the rat was investigated by using the immunohistochemical ABC method combined with glucose oxidase-DAB-nickel enhancement technique. The results showed that the rat spleen was richly innervated by CGRP-IR fibers. The nerve fibers containing CGRP were mainly distributed in the red pulp, especially surrounding the splenic sinusoid and small blood vessels. They were also observed in the lymphoid tissue of marginal zone, and occasionally in the periarterial lymphatic sheath (PALS). The positive fibers distributed in the spleen, which suggested that the fibers might modulate the development and function of splenic lymphocytes.

Objective To examine the projection of protein kinase C? isoform(PKC?)\|immunoreactive neurons from the medullary and spinal dorsal horns to the midbrain periaqueductal gray(PAG) in the rat. Methods By using fluoro\|gold(FG) retrograde tracing combined with immunofluorescence histochemical staining for PKC?. Results PKC?\|immunoreactive neurons were observed in laminae Ⅰ,Ⅱ,Ⅲ of the medullary and spinal dorsal horns and lateral spinal nucleus.After injecting FG into the PAG,FG retrogradely labeled neurons were also mainly found in laminae Ⅰ,Ⅱ,Ⅲ of the medullary and spinal dorsal horns and lateral spinal nucleus.Some of these FG\|labeled neurons in laminae Ⅰ,Ⅱ,Ⅲ of the medullary and spinal dorsal horns and lateral spinal nucleus exhibited PKC?\|immunoreactivities.Conclusion\ PKC?\|immunoreactive neurons in the medullary and spinal dorsal horns might be involved in the transmission of nociceptive information from the medullary and spinal dorsal horns to the PAG.\;[

Objective To observe the effect of 3D-Slicer combined with sina software assisted minimally invasive neuroendoscopic surgery for hypertensive intracerebral hemorrhage,and investigate the application value of 3D-Slicer combined with sina software in the preoperative localization of minimally invasive neuroendoscopic surgery.Methods From July 2015 to October 2017,38 consecutive patients with supratentorial hypertensive intracerebral hemorrhage admitted to Shunde Hospital,Guangzhou University of Chinese Medicine were enrolled retrospectively.According to the different treatment methods,they were divided into an endoscopic group and a puncture group (n =19 in each group).The endoscopic group was treated with 3D-Slicer combined with sina software for neuroendoscopic hematoma removal,and the puncture group was treated with the hematoma minimally invasive soft-channel puncture and drainage under the CT localization.The effect of 3D-Slicer combined with sina software in the preoperative localization of hypertensive intracerebral hemorrhage by the minimally invasive surgery was evaluated by comparing the hematoma clearance of the first and third day of the two groups of patients after procedure,puncture to the preset position success,postoperative rebleeding,postoperative complications,and good prognosis at 3 months after procedure.Results The clearance rate of hematoma at the first day after operation in the endoscopic group was significantly higher than that in the puncture group ([90 ± 10]％ vs.[46 ± 16]％;t =2.348,P ＜ 0.05).The success of the puncture to the preset position was better than that in the puncture group (19/19 vs.14/19;x2 =5.758,P =0.016),and postoperative rebleeding rate was lower than that in the puncture group (0 vs.4/19;x2 =4.471,P =0.034).There were significant differences.There was no significant difference in postoperative infection complications between the two groups (all P ＞ 0.05).The prognosis of the endoscopic group was good in 17 patients within 3 months after procedure,and the prognosis was good in 11 patients in the puncture group.The good prognosis in the endoscopic group was better than that in the puncture group (x2 =4.866,P =0.027).Conclusion The effect of 3D-Slicer combined with sina software assisted minimally invasive neuroendoscopic surgery for hypertensive intracerebral hemorrhage was better than the hematoma minimally invasive soft-channel puncture and drainage under the CT localization,and the 3D-slicer combined with sina software can provide rapid and accurate preoperative localization for minimally invasive neuroendoscopic surgery of hypertensive intracerebral hemorrhage.

Objective:To observe the effects of TCM compounds for eliminating phlegm and removing blood stasis on the ultrastructure of atrial myocardium in atrial fibrillation (AF) rats; To explore its possible mechanism.Methods:Totally 60 male SD rats were divided into blank group (10 rats) and model group (50 rats) according to random number table method. The atrial fibrillation model was established by tail vein injection of ACh-CaCl 2 mixture for 7 consecutive days, and then the rats with successful modeling were divided into model group, verapamil group, TCM compounds high-, medium- and low-dosage groups according to random number table method, with 10 rats in each group. TCM compounds high-, medium- and low-dosage groups were given Chinese herbal decoction 41.25, 20.63, 10.31 g/(kg?d) by gavage, respectively, and the verapamil group was given verapamil solution 25 g/(kg?d). The blank group and the model group were given an equal volume of normal saline by gavage for consecutive 14 days. After 14 consecutive days, electrophysiological recorder was used to measure the duration of atrial fibrillation in each group of rats; the changes of ultrastructure of atrial myocytes in each group were observed under transmission electron microscope; serum ROS, SOD and GSH-Px levels of rats were detected by ELISA. Results:Compared with the model group, the duration of atrial fibrillation in TCM compounds high-, medium- and low-dosage groups and verapamil group decreased ( P<0.05); the ultrastructural damage of atrial myocytes was improved; the content of ROS [(139.20±3.34) ng/ml,(139.00±3.28) ng/ml, (139.25±3.82) ng/ml vs. (155.60±7.32) ng/ml] in TCM compounds high- and medium-dosage groups and verapamil group decreased; the contents of SOD [(2.41±0.26) ng/ml, (2.40±0.12) ng/ml, (2.37±0.06) ng/ml vs.(2.12±0.21) ng/ml] increased ( P<0.05); the content of GSH-Px [(3.61±0.06) ng/ml, (3.60±0.08) ng/ml, (3.47±0.15) ng/ml, (3.51±0.19) ng/ml vs.(3.27±0.12) ng/ml] in TCM compounds high-, medium- and low-dosage groups and verapamil group increased ( P<0.05). Conclusion:TCM compounds for eliminating phlegm and removing blood stasis can shorten the duration of atrial fibrillation in rats, reduce the damage of ultrastructure of atrial myocytes in AF rats, regulate the expressions of serum ROS, SOD and GSH-Px in AF rats, and inhibit oxidative stress, which may be one of its mechanisms of action in the treatment of atrial fibrillation.

Objective Stereotactic body radiotherapy(SBRT)and radiofrequency ablation(RFA)are primary treatments for hepatocellular carcinoma(HCC)at present.However,the effect of these treatments in clinical trails are rather controversial.The purpose of this paper is to conduct a meta-analysis on the clinical effect and related complications of SBRT and RFA for HCC.Methods A computerized retrieval of academic papers concerning the treatment effect of SBRT and RFA for HCC from the databases of PubMed,Embase,Cochrane Library,Scopus,Web of Science,CBM,CNKI,Wanfang database,VIP was conducted.The retrieval time period was from the establishment of the database to June 2022.Stata14.0 software was used to make meta-analysis.Results A total of 14 retrospective studies including 6 806 patients were included in this analysis.The results of combined hazard ratio(HR)based on overall survival(OS)showed that the OS rate of SBRT was lower than that of RFA(HR=1.25,95％CI=1.10-1.43,12=0％,P=0.000 9),while the results of combined HR of local control(LC)rate indicated that SBRT had a better therapeutic effect(HR=0.61,95％CI=0.47-0.78,I2=0％,P=0.000 1).Subgroup analysis revealed that the combined HR of LC rate favored the performance of SBRT for patients with tumor diameter larger than 2 cm(HR=2.64,95％CI=1.56-4.48,I=0％,P=0.000 3).No statistically significant difference in the incidence of late serious adverse reactions existed between SBRTgroup and RFA group(OR=1.01,95％CI=0.59-1.73,I2=30％,P=0.97).Conclusion SBRT is superior to RFA in controlling local HCC lesions,especially in patients whose tumor diameter is larger than 2 cm,although it does not show certain advantages in the survival benefit.(J Intervent Radiol,2023,32:1233-1241)

Objective:To investigate the differences of white matter diffusion properties between vulnerable and resistant individuals to continuous attention after sleep deprivation.Methods:According to the psychomotor vigilance test performance before and after sleep deprivation, the participants were divided into the vulnerable group( n=24) and resistant group( n=25). All participants underwent diffusion tensor imaging (DTI) scans.Tract based spatial statistics(TBSS) was used to compare fractional anisotropy(FA), mean diffusivity(MD), axial diffusivity(AD), radial diffusivity(RD) maps between the two groups.Spearman correlation analysis was conducted by SPSS 24.0 to investigate the relationships between the altered DTI metrics and PVT task performance. Results:(1) Compared with resistant group, FA value of vulnerable group decreased in the body of corpus callosum(x, y, z=-8, 9, 25, t=-7.855), right superior longitudinal fasciculus(x, y, z=-39, -7, 26, t=-6.252), bilateral anterior limb of internal capsule(x, y, z=-13, 8, 13, t=-5.235; x, y, z=12, 8, 3, t=-5.024) and right posterior thalamic radiation(x, y, z=-26, -56, 17, t=-5.469)(TFCE corrected, P<0.05, cluster size≥50 voxel). (2) Compared with resistant group, MD value of vulnerable group increased in the body of corpus callosum(x, y, z=-3, -6, 26, t=7.613), right superior longitudinal fasciculus(x, y, z=-31, -19, 38, t=5.314), bilateral anterior limb of internal capsule(x, y, z=-16, 7, 8, t=6.898; x, y, z=15, 5, 7, t=6.652), splenium of corpus callosum(x, y, z=27, -53, 17, t=6.541), and AD value increased in the right superior longitudinal fasciculus(x, y, z=-33, -19, 39, t=4.892), splenium of corpus callosum(x, y, z=-22, -49, 21, t=5.450), genu of corpus callosum(x, y, z=4, 26, 0, t=4.332), as well as RD value increased in the right superior corona radiata(x, y, z=-17, 1, 33, t=7.558), body of corpus callosum(x, y, z=4, -8, 26, t=6.699), right anterior limb of internal capsule(x, y, z=-12, 7, 3, t=5.212) (TFCE corrected, P<0.05, cluster size≥50 voxel). (3) Correlational analysis revealed that the negative correlations were found between PVT task performance and the FA value in the right superior longitudinal fasciculus( r=-0.492, P<0.001), right anterior limb of internal capsule( r=-0.510, P<0.001), right posterior thalamic radiation( r=-0.502, P<0.001) and body of corpus callosum( r=-0.464, P<0.001). The positive correlations were found between PVT task performance and the MD value in the body of corpus callosum( r=0.500, P<0.001), right superior longitudinal fasciculus( r=0.499, P<0.001), splenium of corpus callosum( r=0.462, P<0.001), right anterior limb of internal capsule( r=0.471, P<0.001), and AD value in right superior longitudinal fasciculus( r=0.643, P<0.001), as well as RD value in right superior corona radiate( r=0.498, P<0.001) (Bonferroni corrected, P<0.003). Conclusion:Differences in the microstructural characteristics of white matter fiber tracts in specific brain regions may constitute the potential neuropathological basis for the phenotypes of vulnerable and resistant individuals to continuous attention after sleep deprivation.

Non-small cell lung cancer (NSCLC) is the most common pathological type of lung cancer. In recent years, immunotherapy has developed rapidly. Immune checkpoint inhibitors, especially programmed death-1 (PD-1)/programmed death-ligand 1 (PD-L1) inhibitors have made a breakthrough in the treatment of NSCLC and changed the treatment pattern for NSCLC. Immunological checkpoint inhibitors targeting PD-1/PD-L1 are beneficial to patients, both in the first-line and second-line treatment of advanced NSCLC, in the adjuvant treatment of locally-advanced NSCLC, and in the neoadjuvant therapy of early NSCLC, which show an important role in the comprehensive treatment of NSCLC. This article reviews the clinical research progress of immunological checkpoint inhibitors targeting PD-1/PD-L1 in NSCLC.
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