Objective To investigate the value of MRI in the diagnosis and differential diagnosis of bladder leiomyoma.Methods Clinical data,pathological files and MRI findings of 8 patients with bladder leiomyoma that verified by pathologic were analyzed retrospectively.Results 4 cases of bladder leiomyoma were located in front bladder wall, 3 cases were in post bladder wall and 1 case in right bladder wall;meanwhile, 6 cases were endovesical(75.0%),1 case was intramural(12.5%) and another 1 case was extravesical(12.5%).All lesions displayed equal signals on T1WI, equal or slightly high signals on T2WI with mild and moderate enhancements;bladder wall adjacent to tumors and structures around were not invaded by tumors.6 cases of all displayed inhomogeneous signals on T2WI and with some patchy or stripe high signals in it, the signals turned to equal on a fat-saturated T1WI which was similar with muscle of pelvic wall.Conclusion MRI features of bladder leiomyoma showed certain characteristics.

OBJECTIVETo explore the safety and curative effects of autologous bone marrow-derived mesenchymal stem cells (BMSCs) in the treatment of silicosis.

METHODSThe protocol was approved by the Ethics Committee of the hospital, and ten patients with silicosis who had given written consent were enrolled in this study. BMSCs isolated from 100 ml of bone marrow for each case were purified and cultured. In each case the 3rd generation of qualified BMSCs (5 × 10(7)) were intravenously administered weekly for 3 weeks. Three cases among 10 patients were treated with BMSCs modified by hepatocyte growth factor (HGF) gene. The clinical symptoms, chest films, chest CT, pulmonary functions, T cells, serum IgG and ceruloplasmin (CP) were observed in 6 or 9 months after treatment.

RESULTSNo obvious sub-effect was observed in cases treated with BMSCs, the clinical symptoms (such as cough, sputum and chest tightness) basically disappeared in 9 months after treatment. Pulmonary function tests showed that FVC increased from 71.2% ± 17.0% to 84.0% ± 10.9% (P < 0.01) and FEV1.0 increased from 67.5% ± 17.7% to 80.6% ± 14.9% (P < 0.01). The levels of serum CP and IgG significantly decreased (P < 0.01). Further, the chest films and CT in cases treated with autologous BMSCs modified by HGF gene were improved to different extent.

CONCLUSIONTreatment with autologous BMSCs modified by HGF gene exhibit a beneficial effect on silicosis.

Adult ; Bone Marrow Cells ; Female ; Hepatocyte Growth Factor ; genetics ; Humans ; Male ; Mesenchymal Stem Cell Transplantation ; methods ; Middle Aged ; Silicosis ; surgery ; Transfection ; Transplantation, Autologous ; Treatment Outcome

OBJECTIVETo investigate the effects of hepatitis B virus (HBV) in semen on human semen parameters and sperm DNA integrity.

METHODSWe detected HBV DNA in the semen samples of 153 HBsAg-seropositive patients by real-time fluorescence quantitative PCR and calculated the sperm nuclear DNA fragmentation index (DFI) by sperm chromatin dispersion (SCD) assay. We compared the semen parameters between the HBV DNA-positive group (A, n = 43) and HBV DNA-negative group (B, n = 110) and analyzed the correlation of sperm DFI with the number of HBV DNA copies in the semen.

RESULTSHBV DNA was detected in 43 (28.1%) of the 153 semen samples. No statistically significant differences were observed in age, semen volume and sperm concentration between groups A and B (P >0.05). Compared with group B, group A showed significantly decreased sperm viability ([58.0 +/- 18.8]% vs [51.4 +/-17.1]%, P<0.05), progressively motile sperm ([29.6 +/- 13.3]% vs [24.5 +/- 10.1]%, P<0.05), average straight-line velocity ([23.7 +/- 4.0] microm/s vs [19.9 +/- 4.5 ] microm/s, P<0.01) and average path velocity ([26.5 +/- 7.0] microm/s vs [23.4 +/- 5.3] microm/s, P<0.01), but remarkably decreased sperm DFI ([19.3 +/- 8.0]% vs [24.2 +/- 9.4]%, P<0.01). The number of HBV DNA copies in semen exhibited a significant positive correlation with sperm DFI (r = 0.819, P < 0.01).

CONCLUSIONHBV DNA in semen is not significantly associated with the number of sperm, but may affect sperm viability, velocity and DFI. There is a load-effect relationship between the number of HBV DNA copies in semen and sperm nuclear DNA integrity.

Adult ; DNA Fragmentation ; DNA, Viral ; isolation & purification ; Hepatitis B Surface Antigens ; blood ; Hepatitis B virus ; genetics ; Humans ; Male ; Semen Analysis ; Sperm Count ; Spermatozoa ; virology

OBJECTIVETo evaluate the potential role of hepatocyte growth factor (HGF) combined with bone marrow mesenchymal stem cells (BMSC) autograft for the treatment of silicosis.

METHODSBone marrow (100 ml) was aspirated from a severe silicosis patient. BMSCs isolated, purified and cultured in vitro. When BMSC came to 70% confluence at passage 3, the culture medium was added liposomes (lipo2000) and plasmid-HGF (p-HGF) and cultured for 2 d. HGF-MSCSs (5 × 10(7) cells) were resuspended in 50 ml 0.9% sodium chloride (NS) and infused Intravenous drip at 3 consecutive times (once a week). Clinical follow-up were performed before and after treatment: (1) pulmonary high-kV X-ray, chest CT examination; (2) pulmonary function test; (3) determination of serum ceruloplasmin.

RESULTSThe symptoms such as coughing, chest tightness disappeared at 12 months after treatment. Pulmonary function tests showed significant changes after treatment: forced vital capacity (FVC) increased from 64.6% to 81.0%, forced expiratory volume in one second (FEV(1.0)) increased from 68.7% to 90.1%, 1 second rate (FEV(1.0)/FVC%) reduced from 111.6% to 107.1%, the maximum mid-expiratory flow (FEF(25%∼75%) decreased from 100.2% to 94.6%, forced expiratory vital capacity 75% of the moment bit of gas flow (MEF(75%)) increased from 99.2% to 113.5%, forced expiratory vital capacity 50% of the moment bit of gas flow (MEF(50%)) increased from 125.3% to 130.2%, forced expiratory vital capacity 25% of the moment bit of gas flow (MEF(25%)) reduced from 86.9% to 71.7%; serum ceruloplasmin levels decreased from 690 mg/L to 180.6 mg/L; lung high-kV X-ray at 1st review showed that diffuse lung nodules had been absorbed and getting smaller than before treatment; chest CT showed that the distribution and number of small nodules at double lung fields decreased than before treatment.

CONCLUSIONHGF combined with BMSC transplantation may have some potential role for the treatment of silicosis patients.

Adult ; Bone Marrow Transplantation ; Female ; Follow-Up Studies ; Hepatocyte Growth Factor ; therapeutic use ; Humans ; Mesenchymal Stem Cell Transplantation ; Silicosis ; therapy ; Treatment Outcome

OBJECTIVETo ascertain whether connexin 26 (Cx26) gene was a nuclear modifier gene in an extensive family with matrilineal nonsyndromic deafness associated with A1555G mutation in Huaiyin, China.

METHODSFollowing PCR-restriction fragment length polymorphism (PCR-RFLP) with ApaI restriction enzyme, Cx26 genes from 26 cases, with A1555G mitochondrial mutations in this family, and 62 controls (including 2 patrilineal relatives, 10 spouse controls and 50 unrelated controls), were sequenced.

RESULTSCompared with the reference sequence of Cx26 gene, totally four kinds of nucleotide changes,79G -->A, 109G-->A, 341G-->A and 235delC, were detected in a heterozygous form. However, the former three were previously reported polymorphisms, and only the 235delC was a previously described recessive mutation associated with most autosomal nonsyndromic sensorineural hearing loss in Japan and China. Further study showed that the heterozygous 235delC mutation existed in both one individual with mild hearing loss and two individuals with normal hearing. Clinical characterization showed that 235delC mutation did not seem to modify the deafness phenotype due to the A1555G mutation. Moreover, this 235delC mutation was deduced to derive from a married-in control. Finally, there were no co-segregation between the phenotypes of hearing loss and the genotypes for Cx26 genes based on the four kinds of nucleotide changes.

CONCLUSIONSThe heterozygous 235delC mutation of the Cx26 gene may not modulate the severity of hearing loss associated with A1555G mutation and Cx26 gene is unlikely to be a modifier gene for hearing loss due to A1555G mitochondrial mutation in this Chinese family.

Adolescent ; Adult ; Case-Control Studies ; Child ; Child, Preschool ; China ; epidemiology ; Connexin 26 ; Connexins ; genetics ; Deafness ; epidemiology ; ethnology ; genetics ; Female ; Genotype ; Humans ; Infant ; Infant, Newborn ; Male ; Middle Aged ; Mutation ; Pedigree ; Phenotype ; Polymorphism, Restriction Fragment Length ; Sequence Analysis ; Young Adult

Objective To investigate the optimal display orientation of rotator cuff space(RI)structures on magnetic resonance(MR)scanning and arthrography.Methods A total of 80 patients who underwent MR scanning and arthrography in our hospital from January 2021 to March 2023 were selected and all of them were confirmed to have normal RI by shoulder arthroscopy.The RI and the superior glenohumeral ligament(SGHL),the long head of biceps tendon(LHBT),and the coracohumeral ligament(CHL)in the transverse axial,oblique sagittal,and oblique coronal positions were counted in the transverse axial,oblique sagittal,and oblique coronal positions on MR scanning and arthrography.Results The display rate of RI structure by oblique sagittal scan was 17.50%higher than that by horizontal scan,0.00%and oblique coronal scan,5.00%(4/80)(χ2 = 18.739,P<0.001).The display of SGHL,LHBT and CHL in RI by MR Oblique sagittal scan was better than that in transverse axis and oblique coronal scan(χ2 = 26.036,P<0.001).MR oblique sagittal arthrography showed a higher rate of RI structures 57.50%than transverse axial 5.00%and oblique coronal 17.50%(χ2 = 61.534,P<0.001);MR oblique sagittal arthrography showed better display of SGHL,LHBT,and CHL structures in RI than transverse axial and oblique coronal(χ2 = 64.569,P<0.001);MR oblique sagittal arthrography had a significantly higher rate of complete visualization of RI structures in 57.50%than MR oblique sagittal plain scanning in 17.50%(χ2 = 27.307,P<0.05).Conclusion Oblique sagittal position is the optimal display orientation for MR scanning and arthrography to show RI structures.

OBJECTIVETo study the impact of arsenic trioxide (As2O3) on human colorectal carcinoma LS-174T cells and their activity of telomerase.

METHODSLS-174T cells and xenograft model of nude mice were treated with As2O3. The inhibitory effect of As2O3 on survival of LS-174T cells was determined by MTT assay. Apoptosis was determined by electron microscopy and fluorescence microscopy. Cell cycle was assessed by flow cytometry. Telomerase activity in LS-174T cells was determined by PCR-ELISA kit.

RESULTSWith the increasing concentration of As2O3, the ratio of living cells to dead cells decreased significantly, and the IC50 value was 5.23 micromol/L. Apoptosis curve appeared after 24 h and cells turned to apoptosis in a time-dependent manner. As2O3 inhibited the telomerase activity in cell extraction, obviously in a concentration-dependent and time-dependent manner. Inhibitiory effect of As2O3 on xenograft model of nude mice was observed by tumor volume and weight measurement, showing a significant difference between As2O3 and control groups (P < 0.05).

CONCLUSIONBoth the experiments in vitro and in vivo showed an inhibitory effect of As2O3 on colonrectal cancer S-174T cell growth, probably by induction of apoptosis and inhibition of telomerase activity.

Animals ; Apoptosis ; drug effects ; Arsenicals ; administration & dosage ; pharmacology ; Cell Cycle ; drug effects ; Cell Line, Tumor ; Cell Survival ; drug effects ; Colonic Neoplasms ; pathology ; prevention & control ; ultrastructure ; Dose-Response Relationship, Drug ; Enzyme-Linked Immunosorbent Assay ; Flow Cytometry ; Humans ; Inhibitory Concentration 50 ; Mice ; Mice, Inbred BALB C ; Mice, Nude ; Microscopy, Electron ; Microscopy, Fluorescence ; Oxides ; administration & dosage ; pharmacology ; Polymerase Chain Reaction ; methods ; Random Allocation ; Telomerase ; antagonists & inhibitors ; genetics ; metabolism ; Time Factors ; Tumor Burden ; drug effects ; Xenograft Model Antitumor Assays

OBJECTIVETo evaluate efficacy and advantages of the Traditional Chinese Medicine (TCM) synthetic rehabilitation therapy in the treatment of wrist dysfunction after distal radius fractures.

METHODSFrom May 2014 to October 2015, 72 patients with distal radius fracture meeting standards were treated using central randomization system for clinical research. All the patients were divided into two groups: 36 patients in test group and 36 in control group. Sixty-nine cases were finished treatment and followed up in the end. The test group fell off 1 case, and the control group fell off 2 cases. The test group was given TCM synthetic rehabilitation (manipulative therapy, joint mobilization, soaking-washing with Chinese medicinal herbs, functional exercise), and the control group was given functional exercise as well as soaking-washing with Chinese medicinal herbs, 3 weeks for both. Five evaluation standards were used in this research, which were grip strength, patient-rated wrist evaluation (PRWE), Gartland and Werley wrist score, self-rating anxiety scale(SAS) and the overall curative effect evaluation. Before treatment(baseline), after 3 weeks of treatment and 3 months after fracture were the three points in time when collected the data.

RESULTSAfter 3 weeks of treatment and 3 months after fracture, the test group had a significantly better results than those of control group in the PRWE, G-W wrist score and the overall curative effect evaluation(<0.05). In terms of grip strength recovery, after 3 weeks of treatment, the intergroup difference between the test group and the control group were statistically significant relative to the baseline regarding grip strength of ipsilateral wrist by group t-test(<0.05). However, the test group and the control group had no statistically significant relative to the baseline at 3 months after fracture in grip strength(<0.05). For the anxiety of patients, compared with the test group and control group at before and after rehabilitation treatment, the anxiety of both test group and control group cases was eased(<0.05). However, The degree of anxiety relief in test group and control group cases had no difference(>0.05).

CONCLUSIONSThe TCM synthetic rehabilitation therapy has better curative effects on the treatment of functional disability of wrist joints after distal radius fractures than the general therapy of soaking-washing with Chinese medicinal herbs and functional exercise.

Adaptation, Psychological ; Adult ; Age Factors ; Aged ; Beijing/epidemiology* ; Breast Neoplasms/psychology* ; Case-Control Studies ; Educational Status ; Female ; Humans ; Middle Aged ; Risk Factors

Peptides that are composed of dextrorotary (d)-amino acids have gained increasing attention as a potential therapeutic class. However, our understanding of the in vivo fate of d-peptides is limited. This highlights the need for whole-body, quantitative tracking of d-peptides to better understand how they interact with the living body. Here, we used mouse models to track the movement of a programmed death-ligand 1 (PD-L1)-targeting d-dodecapeptide antagonist (DPA) using positron emission tomography (PET). More specifically, we profiled the metabolic routes of [⁶⁴Cu]DPA and investigated the tumor engagement of [⁶⁴Cu/⁶⁸Ga]DPA in mouse models. Our results revealed that intact [⁶⁴Cu/⁶⁸Ga]DPA was primarily eliminated by the kidneys and had a notable accumulation in tumors. Moreover, a single dose of [⁶⁴Cu]DPA effectively delayed tumor growth and improved the survival of mice. Collectively, these results not only deepen our knowledge of the in vivo fate of d-peptides, but also underscore the utility of d-peptides as radiopharmaceuticals.