Objective To investigate the diagnostic values of vaginitis five of the joint inspection kit combined with microscopic examination for common vaginal disease.Methods The vaginal secretions samples from 4 114 outpatients were tested with LTS-V400 vaginitis five of the joint inspection kit and microscopic examination.The examination results of age groups were analyzed and compared.Results In all 4 114 cases of samples,the positive rate of trichomonad(1.95%)was significantly lower than that of fun-gi(4.74%),P <0.05.The positive rates of N-acetyl-beta-galactosamine glycosides enzyme(NAG),sialidase(SNA),and leukocyte esterase(LE)were the highest in >40-50-age group,which were 1.95%,6.10%,14.15%,10.24% and 46.34%,respectively. The positive rates of H2 O2 ,pH >4.5 and pH < 3.8 were the highest in > 50 age group,which were 85.43%,86.09%,and 0.66%,respectively.The positive rates of trichomonad,SNA,LE,H2 O2 ,pH>4.5 and pH<3.8 were statistically different a-mong the age groups(P <0.05 ).Conclusion Vaginitis five of the joint inspection kit combined with microscopic examination is suitable for the diagnosis of trichomonas vaginitis,mouldsex vaginitis,and bacterial vaginal disease .

AIM: To study the factors that affect bone volume in ovariectomized rats. METHODS: The bone volume and factors were analyzed by the grey system theory method in ovariectomized rats. RESULTS: Serum estradiol was the most important factor for the bone volume, followed by the bone contents of calcium, phosphorus and magnesium. Serum calcium, phosphorus and the bone contents of hydroxyproline were the less important factors for the bone volume. CONCLUSION: Serum estradiol and bone contents of calcium are the most important factors that affect bone volume in ovariectomized rats.KEY WOLDS grey correlative analysis; bone volume; factors; ovariectomized rats; osteoporosis

AIM:To evaluate the antitumor effect of caffeic acid Ge on U14 tumor bearing mice.METHODS:The tumor inhibitory ratios of caffeic acid Ge on the growth of U14 in mice was observed.Apoptosis morphological transformation of U14 cells induced by caffeic acid Ge was detected by electronic scan microscope and MG-P staining.Alteration of cell cycle was analyzed by flow cytometry.Apoptosis-related protein levels of Bax and Bcl-2 were determined by immunity histochemistry technology.MTT assay was applied to study the antitumor activities of caffeic acid Ge in U14 cell lines in vitro.RESULTS:Tumor inhibitory rates in caffeic-acid Ge groups were 38.50%,47.17% and 64.02%(from low dose to high dose)(P

BACKGROUND:In recent years, vacuum sealing drainage technology has been widely used in the treatment of orthopedic wounds or to facilitate skin graft survival, both of which have achieved good results.
OBJECTIVE:To observe the curative effects of vacuum sealing drainage technology in the wound healing after limb open fractures, soft tissue defects, pressure sores, and chronic osteomyelitis.
METHODS:Fifty-four patients of fractures combined with soft tissue defects, postoperative exposed bone, osteomyelitis, a large area of pressure ulcers or severe infections, selected from the 273rd Hospital of PLA, were randomly divided into test and control groups according to the wishes of patients. The test group included 36 patients who were treated with vacuum sealing drainage using polyethylene ethanol hydration seaweed salt after debridement, and the control group included 18 patients who were treated with conventional dressing. Wound cleaning time, number of dressings, and wound healing time were detected and compared in the two groups.
RESULTS AND CONCLUSION:Compared with the control group, the wound cleaning time and wound healing time were shorter in the test group, and the number of dressings was also decreased in the test group (P<0.05). After removal of sponge dressings, in the test group, wound granulation was fresh and grew obviously with no exudates after the necrotic residue was removed and vacuum sealing drainage was changed. For the bone exposure patients, the wound area was reduced, or even there was no exposed bone any more. After skin grafting, vacuum suction and pressure due to vacuum sealing drainage technology made al skin grafts survive. In the patients with chronic osteomyelitis, the exudates were gradual y reduced until disappeared after vacuum sealing drainage was exchanged three or four times, and pathogens were not found in bacterial culture. After combined treatment of debridement and vacuum sealing drainage, there were many fresh granulations in the patients with large areas of pressure sores;after replacement of vacuum sealing drainage several times, the granulation grew to the same height with the surrounding skin.

Objective To investigate the characteristics of gray matter volume in Obsessive Compulsive Disorder (OCD) patients compared with healthy controls, and to explore the correlation between brain regions with altered gray matter volume and the patients'cognitive function and clinical symptoms. Method Thirty-six patients with first-episode OCD and 35 healthy controls who were matched by age, gender and education level were selected and examined by MATRICS Consensus Cognitive Battery (MCCB) and Yale-Brown Obsessive Compulsive Scale (Y-BOCS). The head MRI and the Voxel-based morphometry was used to test the volume of gray matter. The correlation analysis was conducted to analyze the correlation between brain areas with altered gray matter volume and patients'cognitive function and Y-BOCS results. Results Compared with the control group, the OCD group had increased gray matter volume in frontal parietal lobe (postcentral gyrus-L, precentral gyrus-L) (t=4.299, P<0.0005, voxels>100) and temporal-limbic system (fusiform gyrus-L, superior temporal gyrus-L, medial temporal lobe-L, parahippocampal gyrus-L) (t=4.841, P<0.0005, voxels> 100). Meanwhile, the volume of gray matter decreased in bilateral anterior cingulate gyrus (t=-4.181, P<0.0005, voxels>100). In the case group, there were a positive correlation between the volume of gray matter in the temporal lobo-limbic system and social cognition score (r=0.347,P=0.038) and a positive correlation between the volume of gray matter in the anterior cingulate gyrus and obsessions score (r=0.416,P=0.012). Conclusion Patients with OCD have abnormal gray matter volume in a wide range of brain regions, including the frontal parietal lobe, the temporal-limbic system, and bilateral anterior cingulate gyrus, among which the volume of gray matter in the temporal-limbic system is correlated with social cognition, and gray matter volume in the anterior cingulate gyrus is correlated with obsessions.

Objective:To investigate the efficacy and safety of accelerated epithelium-off corneal collagen cross-linking (CXL) in the treatment of corneal ectasia after keratorefractive surgery.Methods:An observational case series study was performed.Twelve patients (22 eyes) diagnosed with corneal ectasia after keratorefractive surgery in the First Affiliated Hospital of Army Medical University were enrolled from January 2016 to December 2018.All the patients received accelerated epithelium-off CXL and were followed up for 12 months.Before and 1 week, 1, 3, 6, and 12 months after the operation, the uncorrected visual acuity (UCVA) and best corrected visual acuity (BCVA) converted to the logarithm of the minimum angle of resolution (LogMAR) unit were measured.The sphericity, cylindricity, and spherical equivalent were examined by Topcon auto refractor.The maximum keratometry (Kmax) of the front surface, mean keratometry (Km) of the front surface, Km of the back surface, symmetry index of front surface (SIf), symmetry index of back surface (SIb), thinnest corneal thickness (TCT), total aberrations, total high-order aberrations, coma aberration, trefoil aberration and spherical aberration were detected by the Sirius analyzer.The depth of corneal demarcation lines was determined by optical coherence tomography.The intraocular pressure was measured by the non-contact tonometry.The corneal endothelial cell density was assayed by the endothelial cell densitometry.The inflammatory reaction and haze were observed with a slit lamp at different time points after surgery.This study adhered to the Declaration of Helsinki.The study protocol was approved by the First Affiliated Hospital of Army Medical University (No.KY2020063). Written informed consent was obtained from each patient before entering the cohort.Results:Among the 22 eyes of 12 cases, 3 eyes of 2 cases (13.64%) underwent small incision lenticule extraction, and 19 eyes of 10 cases (86.36%) underwent excimer laser in situ keratomileusis.The UCVA (LogMAR), BCVA (LogMAR), cylindricity and spherical equivalent before the operation were 0.61±0.42, 0.24±0.23, (-2.83±2.39)D, (-3.60±2.66)D, which were significantly worse than 0.45±0.31, 0.12±0.15, (-2.11±1.67)D, (-3.12±2.31)D at 12 months after the operation ( t=4.054, 4.956, -3.728, -2.742; all at P<0.05). The front surface Kmax, front surface Km and SIf at 12 months after the operation were (48.37±5.80), (41.49±3.04), (5.36±4.07)D, which were significantly lower than (49.61±5.97), (41.66±2.97), (5.85±4.18)D before the operation ( t=5.949, 2.278, 2.719; all at P<0.05). There was no significant difference in sphericity, Km of the back surface, SIb, TCT, total aberrations, total high-order aberrations, coma aberration, trefoil aberration, spherical aberration, intraocular pressure and endothelial cell density between before and 12 months after the operation (all at P>0.05). Grade 0.5-2 haze occurred in 8 eyes of 4 patients one month postoperatively.After administration of prednisolone acetate eye drops, haze decreased or disappeared 3 months postoperatively, with UCVA and BCVA unchanged.A corneal demarcation line with a depth of (285.40±51.61)μm was found in 11 eyes of 6 cases at 1 month after operation. Conclusions:Accelerated epithelium-off CXL can significantly improve visual acuity, reduce corneal astigmatism and corneal curvature, as well as effectively prevent the progress of corneal ectasia.

BACKGROUND:Polyetheretherketone is a special plastic polymer with good mechanical properties,biocompatibility,and chemical stability,which can be added with different fillers to form new composite materials and has potential clinical application value in post core repair. OBJECTIVE:To review the properties of polyetheretherketone and its composite materials,as well as the clinical application progress in post core repair. METHODS:CNKI database was searched using the Chinese search terms"polyetheretherketone,post core repair,metal post,fiber post,zirconia post".PubMed database was searched using English search terms"PEEK,polyetheretherketone post,post core repair,dental dowels".Search time ranged from January 2019 to October 2023.By reading literature titles,abstracts,and selecting the entire text,the inclusion and exclusion criteria were used to screen and finally include 71 articles for review. RESULTS AND CONCLUSION:Polyetheretherketone is a high-performance thermoplastic polymer.Experimental studies have proven that polyetheretherketone and its composites have advantages in mechanical properties,biocompatibility,aging resistance,chemical stability,adhesive properties,etc.,and have promising application prospects in the field of post core repair.The clinical application of polyetheretherketone and its composite materials as post core restorations is limited to anterior teeth and premolars,but they have achieved satisfactory restoration results.Polyetheretherketone and its composite materials are new materials in post core repair,and there are still many problems to be solved,such as whether the 3D printing equipment and printing process will affect the mechanical properties of the materials;short observation time for clinical repair effects,lack of long-term research validation.There is a lack of case reports on the use of polyetheretherketone and its composite materials as post and core materials for repairing molars,and further research is needed to continuously improve related studies.

Pathological cardiac hypertrophy serves as a significant foundation for cardiac dysfunction and heart failure. Recently, growing evidence has revealed that microRNAs (miRNAs) play multiple roles in biological processes and participate in cardiovascular diseases. In the present research, we investigate the impact of miRNA-34c-5p on cardiac hypertrophy and the mechanism involved. The expression of miR-34c-5p was proved to be elevated in heart tissues from isoprenaline (ISO)-infused mice. ISO also promoted miR-34c-5p level in primary cultures of neonatal rat cardiomyocytes (NRCMs). Transfection with miR-34c-5p mimic enhanced cell surface area and expression levels of foetal-type genes atrial natriuretic factor (Anf) and β-myosin heavy chain (β-Mhc) in NRCMs. In contrast, treatment with miR-34c-5p inhibitor attenuated ISO-induced hypertrophic responses. Enforced expression of miR-34c-5p by tail intravenous injection of its agomir led to cardiac dysfunction and hypertrophy in mice, whereas inhibiting miR-34c-5p by specific antagomir could protect the animals against ISO-triggered hypertrophic abnormalities. Mechanistically, miR-34c-5p suppressed autophagic flux in cardiomyocytes, which contributed to the development of hypertrophy. Furthermore, the autophagy-related gene 4B (ATG4B) was identified as a direct target of miR-34c-5p, and miR-34c-5p was certified to interact with 3' untranslated region of Atg4b mRNA by dual-luciferase reporter assay. miR-34c-5p reduced the expression of ATG4B, thereby resulting in decreased autophagy activity and induction of hypertrophy. Inhibition of miR-34c-5p abolished the detrimental effects of ISO by restoring ATG4B and increasing autophagy. In conclusion, our findings illuminate that miR-34c-5p participates in ISO-induced cardiac hypertrophy, at least partly through suppressing ATG4B and autophagy. It suggests that regulation of miR-34c-5p may offer a new way for handling hypertrophy-related cardiac dysfunction.