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Objective To review the efficacy of α1-blocker in the treatment of urinary calculi post extracorporeal shock wave lithotripsy (ESWL). Methods Key words include Urinary calculi, Alpha-blocker, Randomized clinical trail, Ex?tracorporeal shockwave lithotripsy, et al were searched against databases include Pubmed, Embase, Cochrane Library data?bases and CNKI. All studies that reported effect ofα-blockers post ESWL were eligible for the analysis. Data was extracted through quality assessment and data filtering, then were analysed using RevMan 5.0. Results Fourteen randomized clinical trails with a total of 1 464 patients met the inclusion criteria. Pooled analysis showed a better stone clearance and shorter in?terval between stone fragment discharges (RR=1.21, 95%CI:1.10-1.33, P<0.05) and (SMD=-1.23, 95%CI:-2.09--0.36, P<0.05) respectively afterα1-blocker administration. However, evidence is still not convincible that it can reduced the fre?quency of colic episodes (RR=0.54,95%CI:0.28-1.02, P=0.06). Conclusion α1-blockers facilitates the expulsion of uri?nary calculi shown by a higher expulsion rate, a shorter expulsion interval during treatment. Adjunctive therapy with α1-blockers after ESWL is effective in the treatment of urinary calculi.

Objective To explore the diagnostic value of quantitative contrast‐enhanced ultrasonography(CEUS) for crush injury in the hind limb muscle of rabbits .Methods A totle of 120 New Zealand white rabbits were randomized to receive compression on the left hind limb for either 2 h( n =56) or 4 h( n = 56) to induce muscle crush injury ,another 8 animals were not injured and served as normal controls .CEUS parameters such as peak intensity(PI) ,area under curve(AUC) ,ascending slop(AS) and descending slop(DS) were measured at 0 5. h ,2 h ,6 h ,24 h ,3 d ,7 d ,14 d after decompression .Results Compared with the uninjured muscle ,reperfusion of the injured muscles showed early and high enhancement in CEUS .The time‐intensity curve showed a trend of rapid lift and gradual drop .The PI and AUC values differed significantly among the three groups and were positively correlated with serum and tissue biomarkers .Rabbits of the 4 h compression group showed significantly higher PI and AUC values compared with the 2 h compression group at each time points .Conclusions CEUS can effectively detect muscle crush injury and monitor dynamic changes of the injured muscle in rabbits .PI and AUC are promising diagnostic parameters for this disease .CEUS might play an important role in the pre‐hospital and bedside settings for the diagnosis of muscle crush injury .

Objective The aim of this study was to investigate the differences of the cell ultrastucture of normal mouse hatched blastocysts and their dormant ones cultured in vitro after freezing-thawing, and to explore whether the dor-mant embryos have a better anti-freezing shock property than the normal hatched mouse embryos .Methods By transmis-sion electron microscopy , the ultrastructure of these two types of mouse embryos was observed and analyzed .Results By comparative analysis of their ultrastructure , the results showed that the dormant embryos before freezing are being austerity and with lower energy metabolism at a ‘ground state ’ .After freezing-thawing and culture , their cellular structure seemed to be similar to that of the normal embryos cultured in vitro before freezing.However, after freezing-thawing and culture, the number of mitochondria decreased , the nuclei were loose , and their heterochromatin also increased .Conclusions From the ultrastructural observation , compared with the normal mouse hatched embryos , the cellular state of dormant mouse em-bryos after freezing-thawing is more favorable for material storage and energy metabolism , thus, indicating that they have a better anti-freezing property than normal hatched embryos .

Objective To explore the clinical and pathological features, treatment, and prognosis of capillary proliferative purpura nephritis (DEP-HSPN) in children.MethodsThe clinical data of 19 children diagnosed with DEP-HSPN were retrospectively analysis. Fifty-five children diagnosed with HSPN by renal biopsy were randomly selected as control group. ResultsThe average age was 10.6±2.6 years old, and the average course of disease were 19.4±7.4 days before renal biopsy in 19 children with DEP-HSPN (14 males and 5 females) who make up 3.92% of anaphylactic purpura nephritis children conifrmed by renal biopsy in the same period. In these 19 children, there were 10 cases having nephrotic syndrome and 9 case having hematuria and proteinuria type, all of whom were received immunosuppressive therapy. Finally, 14 cases achieved completely remission and 5 cases had partly remission. All of their classiifcations of renal pathology wereⅢb levels, accompanied with 6.38% to 36.36% of crescents. Compared with 55 age and sex matched children with renal pathology classiifcation ofⅢb, the DEP-HSPN children had shorter disease course, higher level of proteinuria, and lower pathological score of chronic renal injury (P all?

OBJECTIVETo investigate the presence of vasculogenic mimicry (VM) in tongue squamous cell carcinoma and explore its clinical significance.

METHODSForty-two surgical specimens of tongue squamous cell carcinoma were examined for the presence of VM using HE staining and double staining of CD34 and PAS.

RESULTSOf the 42 specimens, 18 (42.86%) showed the presence of VM. VM was not correlated with the patients' age or gender, but with lymph node metastasis and the grade of tumor differentiation. Compared with tumors without VM, the tumors with VM had a significantly higher rate of lymph node metastasis (P<0.05) and a lower grade of differentiation (P<0.05).

CONCLUSIONVM can be present in tongue squamous cell carcinoma, and the poorly differentiated tumors contain more VM, which is associated with a greater likeliness of lymph node metastasis and a poorer prognosis.

Adult ; Aged ; Aged, 80 and over ; Carcinoma, Squamous Cell ; blood supply ; Female ; Humans ; Male ; Middle Aged ; Neovascularization, Pathologic ; Tongue Neoplasms ; blood supply

Objective To explore the value of quantitative contrast enhanced ultrasonography (CEUS) in early diagnosis and monitoring of acute kidney injury (AKI) after limb muscle crush injury.Methods Totally 64 New Zealand white rabbits were selected and divided into experimental group (n=56) and control group (n=8).Models of AKI were prepared by applying cuff balloon pressure in experimental group,while rabbits in the control group was not given pressure.CEUS of the left kidney was performed at 0.5 h,2.0 h,6.0 h,24.0 h,3 days,7 days,14 days after model establishment.Rabbits in experimental group were divided into different subgroups according to different time points.Peak intensity (PI),area under the curve (AUC),ascending slope (AS) and descending slope (DS) were calculated.The serum levels of creatine kinase (CK),lactic dehydrogenase (LDH),blood urea nitrogen (BUN),creatinine (Cr) were measured.Then the rabbits were sacrificed,and the left renal tissues were fixed for histological observation.Results The levels of CK,LDH,BUN and Cr had statistical differences among all subgroups in experimental group and control group (all P＜0.05),of 2.0,6.0,24.0 h and 3 days subgroups in experimental group were significantly higher than those of control group (all P＜0.05).PI,AUC,AS,DS among all subgroups in experimental group and control group had statistical differences (all P＜0.05).Compared with control group,AS and DS decreased in all subgroups in experimental group (all P＜0.05),but there was no statistical differences among all subgroups in experimental group (P＞0.05).Conclusion CEUS can be used to effectively reflect the changes of AKI after crush injury.

Objective:To explore the microcirculation formation mechanism of contrast-enhanced ultrasonography imaging performance in rabbits with limb muscle crush injury.Methods:Seventy-two New Zealand white rabbits were randomly divided into two groups. A limb muscle crush injury model was created by airing a balloon cuff device with a force of 40 kPa. Contrast-enhanced ultrasonography parameters were detected in the first group.In vivo microcirculation parameters were detected in the second group. Fine blood vessel diameter and blood flow velocity were calculated before extrusion and 0.5 h, 2 h, 6 h, 24 h, and 3 days after decompression.Results:Totally six animals died before the end of the experiment (3 rabbits in ultrasonic imaging and microcirculation detection groups, respectively). Compared with the uninjured muscle, the reperfusion of the injured muscle showed early and high enhancement in contrast-enhanced ultrasonography images. The peak intensity and area under the curve were significantly higher than those of the control subgroup at each time point after decompression(all P<0.05), and reached the peak at 24 h after decompression. The time-intensity curve showed a trend of rapid elevation and gradual drop. In the microcirculation group, compared with the control group, fine artery and vein diameters in the experimental group were wider and the blood flow velocity was slower, especially in the fine veins(all P<0.05). At each time point after decompression, there was a statistical difference between the control subgroup and the control subgroup, and the change reached the peak at 24 h after decompression. The blood flow state showed that the arterioles were dominated by linear flow and linear grain flow at each time point after decompression, and linear grain flow, grain flow and grain pendulum flow were observed in the fine veins. Blood flow stagnation and adhesion of white blood cells and white microthrombus were also observed in the fine veins. Correlation analysis showed that the peak intensity and area under the curve were positively correlated with the inner diameter of arterioles and veins( r=0.84, 0.94; r=0.85, 0.94; all P<0.05), and negatively correlated with the flow velocity of arterioles and veins( r=-0.94, -0.96; r=-0.93, -0.96; all P<0.05). Conclusions:In vivo microcirculation detection can reflect changes in muscle microvascular diameter and blood flow velocity, which have a correlation with quantitative ultrasound imaging parameters.

Objective:To summarize the levels of individual dose to radiation workers in Shandong province from 2016 to 2020, and to analyze the trends in their change in order to provide scientific basis for radiation workers′ health management.Methods:The experimental detection and quality control were carried out in compliance with the national standards Specifications for individual monitoring of occupational external exposure (GBZ 128-2019) and the Testing criteria of personnel dosimetry performance for external exposure (GBZ 207-2016). The result of the personal dose monitoring of occupational external exposure of all radiation workers monitored by the Centers for Disease Control and Prevention in 16 cities of Shandong province were retrospectively analyzed by using SPSS 23.0 software.Results:The total number of monitored workers were 25 523 with an average annual individual effective dose of 0.28 mSv. There were statistically significant differences among radiation workers in different years ( H= 2 815.91, P<0. 001). The average annual individual effective dose showed an upward trend followed by a downward trend. The average annual effective dose of 0.55 mSv for nuclear medicine radiation workers in medical applications was the highest, with statistically significant differences among different occupational radiation workers ( H=310.37, P<0.001). The average annual effective dose of 0.37 mSv for radioactivity logging workers in industrial applications was the highest, with statistically significant differences among different occupational radiation workers ( H=448.07, P<0. 001). The average annual effective dose to radiation workers in medical applications was higher than in industrial applications ( Z = -14.93, P<0.001). Conclusions:The average annual effective dose to nuclear medicine radiation workers in medical applications and logging radiation workers in industrial applications are relatively high. There would be a push to furthe improve workplace protection measures and strengthen the management and supervision of radiological workers.

Objective To analyze the radionuclide levels in food and the committed effective dose due to food intake in residents around the Shidaowan Nuclear Power Plant (SNPP). Methods Daily food samples were collected within 30 km radius around the nuclear power plant in 2019—2022. The radioactivity levels before and after the operation of SNPP were determined. The data were combined with the dietary consumption of residents in Shandong province, China to estimate the committed effective dose. Results The radionuclides ²³⁸U, ²³²Th, ²²⁶Ra, and ⁴⁰K in food were at normal background levels, and the average radioactivity was (0.062 ± 0.004), (0.121 ± 0.007), (0.162 ± 0.010), and (92.4 ± 5.5) Bq/kg fresh weight. Trace ¹³⁷Cs and ⁹⁰Sr were detected in some food samples and the average radioactivity was (0.047 ± 0.003) and (0.193 ± 0.200) Bq/kg fresh weight. The levels of radionuclides did not increase after the operation of SNPP compared with that before operation. The estimated committed effective dose in residents due to food intake was 0.205 mSv. Conclusion The radioactivity of food in the area around SNPP shows no difference before and after operation, and the dose burden is low in local residents.