Objective:To evaluate the diagnostic performance of 64Cu-prostate specific membrane antigen (PSMA)-Q compared with 18F-FDG in patients with advanced prostate cancer and to analyze the radiation dosimetry of 64Cu-PSMA-Q. Methods:This study was an open-label, single-arm, self-controlled diagnostic evaluation trial. A total of 29 patients (age 58-87 years) with pathologically confirmed advanced prostate cancer in the Affiliated Hospital of North Sichuan Medical College from September 2023 to December 2023 were included. All patients underwent both 64Cu-PSMA-Q PET/CT and 18F-FDG PET/CT examinations. McNemar test was used to compare the detection rates of 64Cu-PSMA-Q PET/CT and 18F-FDG PET/CT for primary lesions, lymph node metastases, and bone metastases. Mann-Whitney U test was applied to compare differences in SUV max and tumor-to-background ratio (TBR) between 64Cu-PSMA-Q PET/CT and 18F-FDG PET/CT. Radiation dosimetry of 64Cu-PSMA-Q PET/CT imaging was performed using OLINDA/EXM 2.1 (adult male model) in 9 patients. Results:Primary lesions were detected in 21 patients. 64Cu-PSMA-Q PET/CT demonstrated a detection rate of 95.2%(20/21) for primary lesions, which was significantly higher than that of 18F-FDG PET/CT (66.7%(14/21); χ2=6.00, P=0.031). Detection rates of lymph node metastases were 65.5%(19/29) for 64Cu-PSMA-Q and 55.2%(16/29) for 18F-FDG, with no significant difference ( χ2=3.00, P=0.250). Similarly, detection rates of bone metastases were 72.4%(21/29) for 64Cu-PSMA-Q and 65.5%(19/29) for 18F-FDG respectively ( χ2=2.00, P=0.500). TBRs on 64Cu-PSMA-Q PET/CT were significantly higher than those on 18F-FDG PET/CT across primary lesions (8.3(2.2, 13.3) vs 2.3(1.0, 5.5); Z=7.16, P=0.002), regional lymph node metastases (4.9(1.4, 8.3) vs 1.7(0.9, 4.0), Z=189.34, P=0.001), and bone metastases (18.7(4.5, 26.9) vs 5.1(2.1, 9.7); Z=24.83, P=0.003). No significant difference in TBR was observed for distant lymph node metastases ( Z=1.49, P=0.135) or benign lesions ( Z=0.91, P=0.558). The whole-body effective dose of 64Cu-PSMA-Q was (28.200±1.590)μSv/MBq among the 9 patients analyzed, with no adverse events related to the tracer observed. Conclusion:64Cu-PSMA-Q is a promising novel PET imaging agent with potential clinical utility for diagnosing prostate cancer and supporting clinical decision-making.

Objective:To evaluate the diagnostic performance of 64Cu-prostate specific membrane antigen (PSMA)-Q compared with 18F-FDG in patients with advanced prostate cancer and to analyze the radiation dosimetry of 64Cu-PSMA-Q. Methods:This study was an open-label, single-arm, self-controlled diagnostic evaluation trial. A total of 29 patients (age 58-87 years) with pathologically confirmed advanced prostate cancer in the Affiliated Hospital of North Sichuan Medical College from September 2023 to December 2023 were included. All patients underwent both 64Cu-PSMA-Q PET/CT and 18F-FDG PET/CT examinations. McNemar test was used to compare the detection rates of 64Cu-PSMA-Q PET/CT and 18F-FDG PET/CT for primary lesions, lymph node metastases, and bone metastases. Mann-Whitney U test was applied to compare differences in SUV max and tumor-to-background ratio (TBR) between 64Cu-PSMA-Q PET/CT and 18F-FDG PET/CT. Radiation dosimetry of 64Cu-PSMA-Q PET/CT imaging was performed using OLINDA/EXM 2.1 (adult male model) in 9 patients. Results:Primary lesions were detected in 21 patients. 64Cu-PSMA-Q PET/CT demonstrated a detection rate of 95.2%(20/21) for primary lesions, which was significantly higher than that of 18F-FDG PET/CT (66.7%(14/21); χ2=6.00, P=0.031). Detection rates of lymph node metastases were 65.5%(19/29) for 64Cu-PSMA-Q and 55.2%(16/29) for 18F-FDG, with no significant difference ( χ2=3.00, P=0.250). Similarly, detection rates of bone metastases were 72.4%(21/29) for 64Cu-PSMA-Q and 65.5%(19/29) for 18F-FDG respectively ( χ2=2.00, P=0.500). TBRs on 64Cu-PSMA-Q PET/CT were significantly higher than those on 18F-FDG PET/CT across primary lesions (8.3(2.2, 13.3) vs 2.3(1.0, 5.5); Z=7.16, P=0.002), regional lymph node metastases (4.9(1.4, 8.3) vs 1.7(0.9, 4.0), Z=189.34, P=0.001), and bone metastases (18.7(4.5, 26.9) vs 5.1(2.1, 9.7); Z=24.83, P=0.003). No significant difference in TBR was observed for distant lymph node metastases ( Z=1.49, P=0.135) or benign lesions ( Z=0.91, P=0.558). The whole-body effective dose of 64Cu-PSMA-Q was (28.200±1.590)μSv/MBq among the 9 patients analyzed, with no adverse events related to the tracer observed. Conclusion:64Cu-PSMA-Q is a promising novel PET imaging agent with potential clinical utility for diagnosing prostate cancer and supporting clinical decision-making.

Objective: To investigate the situation and influencing factors of bowel cleansing in patients before colonoscopy, and to provide reference for guiding patients′ bowel preparation. Methods: The clinical data of 421 patients undergoing electronic colonoscopy in the endoscopy center of the second people′s hospital of Lu′an city in Anhui Province from April to September 2018, Prospective collection by systematic sampling, including general data of patients, clinical data of bowel preparation and score of Boston bowel preparation scale. Univariate analysis and logistic regression analysis were performed on the relevant factors of bowel preparation. Results: Among the 421 patients, 52 cases were not eligible for intestinal cleaning, and the unqualified rate was 12.35%(52/421). Logistic regression analysis showed that: Total amount of drinking water prepared for intestinal tract before colonoscopy (OR=1.674, P=0.018),The total times of defecations after taking the drug (OR=1.270, P=0.014), the characteristics of last stool before colonoscopy (OR=2.211, P=0.042), the diet the day before colonoscopy (OR=0.553, P=0.006) , body mass index (OR=1.111, P=0.042), and intestinal diseases (P=0.022), were all intestinal clearance independent influencing factors of cleaning effect; While took laxative type (mannitol/PEG), drunk water speed (within 3 hours), first defecation time, the site of drinking bowel-clearing drugs, daily activity, none of the above factors affected the bowel preparation effect (P>0.05) . Conclusion Before colonoscopy, there were many factors affecting the cleaning effect of the intestine. The total water intake of intestinal preparation was less than 2 000 ml, the total number of defecation after taking medicine was less than 5 times, the last defecation contained residue, the day before the examination was strictly fasting, the body mass index was less than 18.5 kg/m², and colitis, enterelcosis and occupying lesion are independent risk factors for intestinal cleaning. Attention should be paid to the comfort care and guidance of intestinal preparation, and prospective intervention can effectively improve the cleaning effect of intestinal tract.

Brain ; pathology ; China ; Humans ; Organ Preservation ; standards ; Tissue Banks ; ethics ; standards

OBJECTIVETo assess the value of chromosomal karyotyping and array-based comparative genomic hybridization for the diagnosis of fetus with abnormalities detected by ultrasonography.

METHODSUmbilical cord blood samples were derived from 1 603 pregnant women. The samples were cultured for routine G-banding karyotype analysis. Among these, 792 samples have further subjected to array CGH analysis.

RESULTSAmong the 1 603 fetuses, 117 (7.30%) were found with chromosomal abnormalities. These included 72 numerical aberrations and 45 structural abnormalities, which respectively accounted for 4.49% and 2.81% of all cases. For those <35 years and ≥ 35 years, a significant difference has been found in terms of fetal chromosomal abnormalities (chi-square is 30.687, P< 0.01). And there was also a significant difference between those with isolated, two or multiple ultrasonographic markers (chi-square is 85.50, P< 0.01). Among 736 fetuses with a normal karyotype, array CGH has detected 17 (2.31%) with a microdeletion or microduplication.

CONCLUSIONKaryotype analysis and array CGH should be offered to all fetuses with ultrasonography detected anomalies regardless the number of markers.

Adolescent ; Adult ; Chromosome Aberrations ; Chromosome Disorders ; diagnosis ; genetics ; Comparative Genomic Hybridization ; methods ; Female ; Fetus ; abnormalities ; Humans ; Karyotyping ; Pregnancy ; Prenatal Diagnosis ; methods ; Ultrasonography, Prenatal ; methods ; Young Adult

Aim To investigate whether DATS induce MGC803 cell apoptosis and the relationship betweenapoptosis and Ca~(2+) disruption. Methods MGC-803 cell growth inhibition was measured by MTT assay. Tunnel and flow cytometry methods were used to determine the induction of apoptosis and Ca2+ homeostasis disruption. Result MTT assay showed that the inhibitory rates on MGC-803 cell growth of different concentrations of DATS 4,8,12,16 and 24 mg?L-1 were 0.231?0.037,0.305?0.036,0.455?0.029,0.607?0.058,0.751?0.019 respectively. Flow cytometry analysis showed that treating MGC803 cell with DATS significantly increased the percentage of apoptosis cells and intracellular Ca2+. Treatment of cells with 1,2-bis(2-aminophenoxye-thane)-N,N,N-tetraacetic acid tetrakis acetoxymethyl ester (BAPTA-AM), cellular Ca2+ chelator, resulted in abolishment of the elevation of intracellular Ca~(2+) and blockage of DATS induced apoptotic of MGC-803. Conclusoin DATS could induce apoptosis of MGC-803 cells through the mechanism of Ca~(2+) homeostasis disruption.

Objective:To study the a feasibility of modified pharyngoplasty in the treatment of velopharyngeal insufficiency.Methods:30 cases of velopharyngeal insufficiency were treated with a modified pharyngoplasty followed by speech training.The effects of the treatment were evaluated by blowing test (BT),chinese articulation inteligibility test (CIT) and hypernasality observation(HO).Results:Before and after treatment BT was 1～26 and 8～40,CIT(%) 20～60 and 47～82,HO(cases) 30 and 3,respectively.Conclusions:The modified pharyngoplastic surgery is feasible in the treatment of velophayngeal insufficiency.

Objective To evaluate the toxicity of suspension concentrate of niclosamide(SCN)for molluscicide in the field.Methods According to the state standard of the People's Republic of China "The methods of toxicity test for agriculture register",GB15670-1995,the experiments of acute toxicity on rats and fish were carried out.Results LD50(s)of SCN via mouth and skin with rats were more than 5 000 mg/kg respectively,and LC50(s)of SCN via inbreathe with rats were more than 5 000 mg/m3.Based on the classification of appraising criterion on acute toxicity test,it belonged to a feebleness toxicity degree.The eye and the skin stimulating tests with rabbits showed that it did not irritate the eyes and the skin.For fish,its acute toxicity was slightly lower than that of pure niclosamide,and markedly lower than that of pure niclosamide ethanolamine salt and WPN.Conclusions SCN belongs to a feebleness toxicity degree and has a lower toxicity to fish.It should be a useful molluscicide in endemic areas of schistosomiasis.

Objective To establish rSAG1-IgM-ELISA with purified rSAG1 fusion protein for immunodiagnosis of toxoplasmosis. Methods The rSAG1 fusion protein was purified by Ni 2+ column. The ELISA plate was coated with different concentrations of rSAG1, reacted with pooled positive and negtive human sera. Goat anti-human IgM conjugated to horseradish peroxidase was used as the second antibody. The appropriate detecting condition of the rSAG1-IgM-ELISA assay was determined by orthogonal experiment. The reproducibility, sensitivity and specificity of the assay were assessed. Thirty-five IgM-positive and 57 IgM-negative human sera detected by the imported IgM-ELISA kit were detected with the rSAG1-IgM-ELISA. Results The purity of rSAG1 was above 90%. The appropriate detecting condition was that the coated rSAG1 was 2 5 ?g/ml, the human serum was in 1∶100 dilution, and the second antibody was in 1∶4000 dilution. The coefficient of variation (CV) value of IgM-positive and IgM-negative pooled sera were 13 8% and 7 7% respectively. The inhibition rate of the assay was 62 0% The positive correspondence rate and negative correspondence rate were 82 9% (29/35) and 91 2% (52/57) respectively,the total correspondence rate was 88 0%, compared with the imported IgM-ELISA kit. Conclusions The rSAG1-IgM-ELISA has high sensitivity and specificity, and good correspondence rate with the imported IgM-ELISA kit. It indicates that rSAG1-IgM-ELISA has potential value for early diagnosis of toxoplasmosis.

0.05).In 0.063 mg/L active content of the three formulations,the death rates of SCN and ECN were higher than that of WPN,there was a significant difference between SCN and WPN or between ECN and WPN(P