Penile traumatic testicular dislocation: a case report.

Traumatic testicular dislocation is rare and usually occurs in patients after a traumatic motor accident. Manual reduction or surgical exploration is the main treatment for this condition. We report a rare case of unilateral traumatic testicular dislocation in a man with an ectopic testis in the middle of the penis after a motorcycle crash injury.

Nanoparticle-Assisted Pool Boiling Heat Transfer on Micro-Pin-Fin Surfaces.

Boiling heat transfer intensification is of significant relevance to energy conversion and various cooling processes. This study aimed to enhance the saturated pool boiling of FC-72 (a dielectric liquid) by surface modifications and explore mechanisms of the enhancement. Specifically, circular and square micro pin fins were fabricated on silicon surfaces by dry etching and then copper nanoparticles were deposited on the micro-pin-fin surfaces by electrostatic deposition.

Characteristics of Renal Function in Patients Diagnosed With COVID-19: An Observational Study.

The aim of the study was to analyze the characteristics of renal function in patients diagnosed with COVID-19. In this retrospective, single-center study, we included all confirmed cases of COVID-19 in a tertiary hospital in Guangdong, China from January 20, 2020 to March 20, 2020. Blood and urine laboratory findings related to renal function were summarized, and the estimated glomerular filtration rate (eGFR) and endogenous creatinine clearance (Ccr) were also calculated to assess the renal function.

The Handling of Oxalate in the Body and the Origin of Oxalate in Calcium Oxalate Stones.

Urolithiasis is one of the most common urologic diseases in industrialized societies. More than 80% of renal stones are composed of calcium oxalate, and small changes in urinary oxalate concentrations affect the risk of stone formation. Elucidation of the source of oxalate and its mechanism of transport is crucial for understanding the etiology of urolithiasis.

[Revolution CT hepatic perfusion imaging assessment of peripheral infiltration zone of hepatic alveolar echinococcosis].

Objective: To analyze the blood supply and metabolism in the marginal area of foci of hepatic alveolar echinococcosis by quantitative perfusion parameters.

Methods: Thirty patients with hepatic alveolar echinococcosis were scanned with the Revolution CT and the images were analyzed. The perfusion parameters, such as the bloodflow (BF), time to peak (TTP), blood volume (BV), mean transit time (MTT) and hepatic arterial fraction (HAF) were compared among different groups.

[Imaging analysis of 79 cases of hepatic echinococcosis].

Objective: To analyze the imaging manifestations of 79 cases of hepatic echinococcosis retrospectively, so as to provide evidences for improving the diagnosis and differential diagnosis of the disease.

Methods: Seventy-nine patients with hepatic echinococcosis who underwent imaging examinations and pathologic confirmation in Qinghai Provincial People's Hospital from 2014 to 2017 were chosen as the investigation objects, and the data of their medical records and imaging manifestations were collected and analyzed.

Results: Among the 79 cases of hepatic echinococcosis, 57 were suffered from cystic echinococcosis (CE) and 22 were suffered from alveolar echinococcosis (AE) .

[Value of CT imaging of inferior vena cava and hepatic vein in patients with hepatic cystic echinococcosis].

Objective: To evaluate the accuracy of CT imaging of inferior vena cava and hepatic vein in patients with hepatic cystic echinococcosis.

Methods: A total of 100 patients with hepatic cystic echinococcosis were given triple-phase abdominal CT scan, and the reconstructed images of the inferior vena cava and hepatic vein were obtained and compared to the real situation during the surgical operation. The reliability of the CT evaluation of the echinococcus cyst lesion invading inferior vena cava and hepatic vein was analyzed.

[Value of three-dimensional visualization technology in preoperative evaluation of liver autotransplantation for end-stage hepatic alveolar echinococcosis].

Objective: To evaluate the value of the three-dimensional visualization technology for the preoperative assessment of liver autotransplantation for end-stage hepatic alveolar echinococcosis.

Methods: A total of 8 patients with end-stage hepatic alveolar echinococcosis undergoing liver autotransplantation in Qinghai Provincial People's Hospital from May 2013 to July 2017 were collected. All cases received preoperative abdominal CT scanning and dynamic three-phase enhanced CT scanning, and the original CT data were transferred to the human 3D visualization virtual surgical planning system.

Frequency-specific plasticity of the auditory cortex elicited by thalamic stimulation in the rat.

In a process known as frequency-specific plasticity, electrical stimulation of the ventral division of the medial geniculate body (MGBv) in the thalamus evokes a shift in the frequency-tuning curves of auditory cortical (AC) neurons toward the best frequency (BF) of stimulated MGBv neurons. However, the underlying synaptic mechanisms of this process are uncharacterized. To investigate whether this dynamic change depends on thalamocortical (TC) synaptic plasticity, we studied frequency-specific changes in synaptic transmission efficacy in TC pathways evoked by thalamic stimulation.

[DAZL gene polymorphisms and astheno-teratozoospermia].

Objective: To investigate the association between single nucleotide polymorphism (SNP) of the DZAL gene in infertile Han Chinese males with astheno-teratozoospermia.

Methods: We collected semen samples from 173 infertile Han Chinese men with astheno-teratozoospermia (case group) and 175 age-matched normal male volunteers (control group) for semen routine and morphological analyses. We obtained genomic DNA, genotyped the polymorphisms of the DAZL gene A260G and A386G via the Sequenom MassARRAY system, and compared the frequencies of the genotypes between the case and control groups.

Changes of synaptic ultrastructure in the guinea pig interpositus nuclei associate with response magnitude and timing after trace eyeblink conditioning.

Learning-induced changes of synaptic ultrastructure have long been proposed as a mechanism that may contribute to support memory formation. Although recent studies have demonstrated that the interpositus nuclei (IN) play critical role in acquisition and retention of trace conditioned eyeblink responses (CRs), there is now limited evidence associating trace eyeblink conditioning with changes of synaptic ultrastructure in the IN. Here, we investigated this issue using a transmission electron microscope.

Comparison of hand-assisted laparoscopic and open radical cystectomy for bladder cancer.

Purpose: To present our experience of hand-assisted laparoscopic radical cystectomy (HALRC) and compare it with open radical cystectomy (ORC).

Patients And Methods: During the period between May 2004 and November 2007, 31 patients underwent HALRC and 39 patients underwent ORC for bladder cancer. The patient demographics, intraoperative variables and postoperative outcomes were compared retrospectively.

Hand-assisted laparoscopic radical cystectomy and extracorporeal urinary diversion: experience with 31 cases.

Objectives: To report our techniques and experience with hand-assisted laparoscopic radical cystectomy and extracorporeal urinary diversion for bladder cancer.

Methods: Between May 2004 and November 2007, 31 patients (mean age 61.3 years, range 40-79) underwent hand-assisted laparoscopic radical cystectomy with extracorporeal urinary diversion for bladder cancer.

[The clinico-pathological significance of protein expression of PAK1 in bladder transitional cell carcinoma].

Objective: To investigate the protein expression of p21-activated kinase 1 gene (PAK1) in bladder transitional cell carcinoma (BTCC) and its clinico-pathological significance.

Methods: Immunohistochemistry and TUNEL were used, in combination with tissue microarray technique, to examine the protein expression of PAK1 and status of cell apoptosis in 100 BTCC tissue specimens obtained during operation and 30 specimens of adjacent normal bladder mucosa.

Results: All adjacent normal bladder mucosa specimens were negative in PAK1 protein expression or only with a low-level expression of PAK1 protein, while 58% of the BTCC specimens showed over-expression of PAK1.

[The clinical significance of expression and amplification of FGF3 in bladder transitional cell carcinoma].

Objective: To investigate the amplification and expression of FGF3 in bladder transitional cell carcinoma (BTCC) and its clinical significance.

Methods: Immunohistochemistry (IHC) and Fluorescence In Situ Hybridization (FISH) methods were used to examine the protein expression and amplification of FGF3 in a tissue microarray (TMA) of 100 BTCCs and 30 adjacent normal bladder mucosas, so as to analyze their correlation and association with patient's clinico-pathological features.

Results: In this study, none of the normal bladder mucosas were detected FGF3 positivity, while in 89 informative BTCCs, 20 (22%) cases were observed positive expression of FGF3 protein, and it was significantly more frequently to occur in BTCCs of poor-differentiation (Grade 3), later clinical stage (T2-4) and tumor in >or= 3 cm in diameter (P < 0.