Complete androgen insensitivity syndrome(CAIS) is characterized by lack of androgen response in target organs due to androgen receptor dysfunction, resulting in feminized external genitalia. Individuals with CAIS are typically advised to live as females. This article reports a patient diagnosed with CAIS and gender dysphoria in adulthood. Following the removal of a left pelvic mass, pathology indicated cryptorchidism with a concurrent Leydig cell tumor. Genetic testing revealed a deletion mutation in exon 3 of androgen receptor gene. During follow-up, the patient underwent gender reassignment, transitioning socially from female to male. This case provides new insights into gender allocation for CAIS patients.

Microbial induced calcium carbonate precipitation (MICP) refers to the natural biological process of calcium carbonate precipitation induced by microbial metabolism in its surrounding environment. Based on the principles of MICP, microbial cement has been developed and has received widespread attention in the field of biology, civil engineering, and environment owing to the merits of environmental friendliness and economic competence. Urease and carbonic anhydrase are the key enzymes closely related to microbial cement. This review summarizes the genes, protein structures, regulatory mechanisms, engineering strains and mutual synergistic relationship of these two enzymes. The application of bioinformatics and synthetic biology is expected to develop biocement with a wide range of environmental adaptability and high performance, and will bring the MICP research to a new height.
Calcium Carbonate/metabolism* ; Chemical Precipitation ; Urease/metabolism*

The adhesive protein secreted by marine sessile animals can resist the resistance of water and exert stickiness under the humid environment. It has become a candidate for the development of high-performance materials in the field of biomedicine and bionics. Barnacles are as one of the marine macrofoulers that can be firmly attached to the underwater substrate materials with different surface characteristics through its cement proteins. To date, the adhesion process of barnacle has been understood in-depth, but the specific underwater adhesion mechanism has not been elucidated and needs further exploration. This review first presented an overview of barnacle and its adhesion process, followed by summarizing the advances of barnacle adhesive protein, its production methods, and applications. Moreover, challenges and future perspectives were prospected.
Animals ; Thoracica/metabolism* ; Proteins/metabolism* ; Adhesives/metabolism*

Objective:To investigate the diagnostic performance of MRI Liver Imaging Reporting and Data System version 2018 in high-risk hepatocellular carcinoma (HCC) patients with intrahepatic parenchymal substantial lesions ≤3.0 cm.Methods:A retrospective analysis was conducted in hospitals between September 2014 to April 2020. 131 pathologically confirmed non-HCC cases with lesions ≤3.0 cm in diameter were randomly matched with 131 cases with lesions ≤3.0 cm in diameter and divided into benign (56 cases), other hepatic malignant tumor (OM, 75 cases), and HCC group (131 cases) in a 1:1 ratio. MRI features of the lesions were analyzed and classified according to LI-RADS v2018 criteria (tie-break rule was applied to lesions with both HCC and LR-M features). Taking the pathological results as the gold standard, the sensitivity and specificity of the LI-RADS v2018 classification criteria and the more stringent LR-5 criteria (with three main signs of HCC at the same time) were calculated for HCC, OM or benign lesions diagnosis. Mann -Whitney U test was used to compare the classification results. Results:The number of cases classified as LR-M, LR-1, LR-2, LR-3, LR-4, and LR-5 in HCC group after applying the tie-break rule were 14, 0, 0, 12, 28, and 77, respectively. There were 40, 0, 0, 4, 17, 14 and 8, 5, 1, 26, 13, 3 cases in benign and OM group, respectively. There were 41 (41/77), 4 (4/14) and 1 (1/3) lesion case in the HCC, OM and benign group, respectively, that met the more stringent LR-5 criteria. The sensitivity of LR-4 combined with LR-5 (LR-4/5) criteria, LR-5 criteria and more stringent LR-5 criteria for HCC diagnosis were 80.2% (105/131), 58.8% (77/131) and 31.3% (41/131), respectively, and the specificity were 64.1% (84/131), 87.0% (114/131) and 96.2% (126/131), respectively. The sensitivity and specificity of LR-M were 53.3% (40/75) and 88.2% (165/187), respectively. The sensitivity and specificity using LR-1 combined with LR-2 (LR-1/2) criteria for the diagnosis of benign liver lesions were 10.7% (6/56) and 100% (206/206), respectively.Conclusions:LR-1/2, LR-5, and LR-M criteria have high diagnostic specificity for intrahepatic lesions with a diameter of ≤3.0 cm. Lesions classified as LR-3 are more likely to be benign. The specificity of LR-4/5 criteria is low, while the more stringent LR-5 criteria has a high specificity for HCC diagnosis.

Objective:To investigate the feasibility of tube potential of 80 kV combined with personalized contrast agent protocol in carotid artery CT angiography (CTA).Methods:A total of 136 consecutive patients undergoing neck CTA were prospectively enrolled in this study. The patients were randomly divided into Groups A, B, C and D. Tube potential of 100 kV and 15 s contrast agent injection protocol was used for Group A (53 cases) as conventional group, while tube voltage of 80 kV and 10 s contrast agent injection protocol was used for Groups B, C and D as experimental groups, with the contrast agent dosages of 20, 25 and 30 ml used according to the body weights of ≤50 kg(Group B, 20 cases), 50-70 kg (Group C, 38 cases), and 70-90 kg (Group D, 25 cases), respectively. The subjective and objective evaluation results of image quality and the effective doses were compared among the four groups.Results:The effective doses in Groups B, C and D were 1.54±0.91, 1.89±1.08 and 2.14±1.27 mSv, respectively, significantly lower than that in Group A [(5.66±0.56) mSv] ( F=169.34, P<0.05). The image quality of four groups met the requirements of clinical diagnosis. No significant differences were found in subjective evaluation and diagnostic efficacy of the four groups ( P>0.05). The CT number of carotid artery, signal-to-noise ratio and contrast-to-noise ratio of the neck region were significantly lower in Groups B, C and D compared with Group A ( F=14.9, 12.94, 14.43, P<0.05). The CT numbers of target carotid vessel were all higher than 250 HU. Conclusions:The scanning protocol of low tube potential (80 kV) combined with 10 s contrast agent injection protocol could not only reduce the doses of radiation and contrast agent, but also preserve the diagnosis effect. Thus, this scanning protocol was feasible and valuable in clinical application.

Objective:To investigate the expression of microRNA125a in infiltrating macrophages during myocardial ischemia reperfusion, and to analyze the effect of microRNA125a on the polarization of infiltrating macrophages during myocardial ischemia reperfusion.Methods:The rat model of myocardial ischemia-reperfusion was established. Myocardial injury tissues were taken, infiltrated macrophages were isolated, and RNA was extracted. qRT-PCR was used to detect M1 and M2 markers in macrophages and evaluate the types of infiltrated macrophages. Subsequently the expression level of microRNA125a in infiltrating macrophages was detected. Finally, the effect of microRNA125a on macrophage polarization was further elucidated.Results:Macrophages in myocardium of ischemia reperfusion showed high expression of M1 markers (TNF-alpha and IL-8), presenting M1 macrophages. At the same time, microRNA125a was also highly expressed in this macrophage. Knockdown or overexpression of microRNA125a in macrophages in vitro can affect the macrophages polarization.Conclusions:Macrophages in myocardial ischemia reperfusion are M1 type, and microRNA125a is highly expressed in this macrophage and promotes its migration to M1 type.

Objective To assess the influence on radiation dose and image quality of bronchial artery CT angiography for hemoptysis patients with high heart rate and free respiratory with single-cardiac dynamic volumetric scanning using 320-row CT.Methods During October 2016 and May 2017,totally 151 hemoptysis patients with heart rate ≥ 65 bmp and free-breathing were scanned for bronchial artery imaging with prospective ECG-gating 320-detector row dynamic volume CT.The patients were randomly divided into two groups,group A(81 cases) and group B(70 cases).Default multi-cardiac cycle scanning style was used for group A to generate multi-sector images A 1 which were reconstructed corresponding single-sector images A2.Single-cardiac periodic scanning was used to get single-sector images for group B.The effective doses (E) of two scanning types,the quantitative parameters of image quality [vascular CT value,image noise (SD),signal-to-noise ratio (SNR),contrast-to-noise ratio (CNR)] and subjective scoring of group B and A1,A2 were compared.The detection accuracy of the systemic artery-pulmonary circulation shunts was evaluated by ROC curve against digital subtraction angiography (DSA).The measurement data was analyzed by independent sample t test while the grade data was tested by independent sample nonparametric test.Results The median value of radiation dose in group B was significantly lower than that of group A (1.42 mSv vs.3.06 mSv,Z=-8.724,P＜0.05).There were no statistically significant differences in quantitative parameters and subjective scoring points of image quality between group B and group A2 (P＞ 0.05).The median subjective scoring points of group B was 4,which was better than that of group A1 (Z =-10.584,P＜ 0.05).The differences of SD,SNR,CNR betweengroup B and group A1 were statistically significant(t =-0.983,7.898,7.695,P＜0.05),and group B had higher SD,SNR and CNR.There was no significant difference in the mean CT values of the aorta and pulmonary artery between the two groups (P ＞ 0.05).The detection accuracy of the systemic arterypulmonary circulation shunts was moderately high in group B and group A2.The area under the ROC curve (AUC) was 0.891 and 0.864,respectively (Z=7.210,7.430,P＜0.05).The accuracy of group A1 was poor.The area under the ROC curve was 0.626 (Z=2.434,P＜0.05).The sensitivity of group B and groupA2 were 80％ and 76.2％,respectively (P＜0.05),and 28.6％ of group A1 (P＜0.05).Conclusions The 320-row single-cardiac periodic dynamic volume CT can effectively improve the image quality and the detection accuracy of the systemic-pulmonary circulation on CT,and reduce the radiation dose of the bronchial artery CT angiography.

Objective: To explore the value of nanoparticles (CN) in lateral cervical lymph node mapping in papillary thyroid carcinoma using carbon. Methods: Thyroid cancer patients with suspicious lymph node metastasis but without typical signs of metastatic disease from March 2016 to November 2017 in Fudan University Shanghai Cancer Center were prospectively included in the cohort. Neck dissection was performed in all patients (compartmentsⅡ-Ⅴ). Suspicious lateral lymph node metastasis was identified using pre-operative ultrasound or computed tomography. CN were used for lymph node mapping during surgery. Results: A total of 70 surgeries were performed in 67 patients, among which 57 were found to have lateral lymph node metastasis (81.4%). The median number of CN-dyed lateral lymph nodes was 6. Compartment IV had the highest number of CN-dyed positive lymph nodes as well as the highest rate of metastasis, followed by compartmentⅢ. In compartmentsⅢandⅣ, the incidence of lymph node metastasis was significantly higher in the CN-dyed group than in the CN-undyed group (P<0.001). When the final pathology of neck dissection was set as the gold standard, lateral CN-dyed lymph node biopsy was found to have a sensitivity of 86.0%; its negative predictive value was 61.9% and its overall accuracy was 88.6%. Conclusions:Injection of CN during surgery was a potential method of mapping lateral lymph nodes in papillary thyroid carcinoma. CompartmentⅢ-ⅣCN-dyed lymph node biopsy had a satisfactory sensitivity and thus, served as a reasonable range for lymph node biopsy.

Objective To explore the anatomic positional relationship of bronchial artery(BA)with esophagus and main bronchus on 320-detector CTA.Methods Original and post-processed images of 142 patients were observed.Type,origin,opening direction of BA as well as its concomitant relationship with esophagus were recorded.The positional relationship of BA with main bronchus was also recorded by fusing the images of BA and bronchial tree together.Results In 122 patients,273 BA were identified (146 on the right and 127 on the left).Right BA mainly ran simultaneously along the right and posterior edge of the esophagus (49.3%),while left BA mainly ran far gradually on the left side of the esophagus (82.7%).The left and right BA mainly ran along the middle thoracic esophagus, accounting for 58.3% and 42.5% respectively.45.2% of the right BA ran across the posterior edge of the right main bronchus and 60.6% of left BA ran simultaneously on the posterior and up edge of the esophagus.The most dividing direction of BA from the tho-racic aorta was 9 to 12 o’clock with a frequency of 74.2%.Conclusion The concomitant relationship with esophagus of the BA and the positional relationship with main bronchus of the BA could clearly be demonstrated on 320-detector CTA,thus providing availa-ble information and help for pulmonary and mediastinal sugery.

OBJECTIVE To investigate the incidence rate of nasal septum fracture and it's influence on the effect of nasal bone reduction. METHODS Retrospective analysis of 212 cases of nasal fracture compared with nasal septum deviation were carried out. Among these cases 112 treated with nasal bone reduction only was called group A; the other cases were treated with nasal reduction concomitantly with septoplasty. Among them 58 cases were diagnosed with nasal septum fracture, it was called group B; 42 cases were diagnosed with nasal septum deviation, it was called group C. The postoperative nasal deformity rate was assessed, and the intraoperative findings of nasal septum contrast with preoperative CT diagnosis was analysed. RESULTS Three months after the operation, 27 cases (24.1%) of nasal deformity were found in group A; 9(9.0%) cases of nasal deformity were found in group B+C; septum fracture was found in 58 cases (100%) in group B and 30(71.8%) cases in group C introperatively. The diagnosis rate of nasal septum fracture by CT was 58.0%, while it's incidence rate was 88.0%. CONCLUSION More nasal septum fractures were observed introperatively than CT findings, and septoplasty concomitantly with nasal bone reduction can obviously reduce the rate of nasal deformity.