Glioma ; pathology ; Humans ; Neoplastic Stem Cells ; pathology

Objective : To explore the mediating effect of sleep quality on mobile phone dependence and loneliness in university students, so as to provide evidence for prevention and intervention of mobile phone dependence. Methods : A survey was conducted from December 2019 and January 2020 among the students of Guangzhou Medical University. The general information questionnaire, mobile phone dependence index scale, UCLA loneliness scale and Pittsburgh sleep quality index scale were used to analyze the mediating effects of sleep quality on mobile phone dependence and loneliness. Results : A total of 575 questionnaires were distributed and 573 valid ones were collected, with an efficiency of 99.65%. The detection rate of 115 students with mobile phone dependence was 20.07%, and that of 203 students with sleep quality problems was 35.43%. The students scored ( 48.03±6.07 ) points in loneliness, and 405 of them had high level. Mobile phone dependence was positively correlated with loneliness and sleep quality ( r=0.299, 0.385, both P<0.05 ); loneliness was positively correlated with sleep quality ( r=0.553, P<0.05 ). Mobile phone dependence and sleep quality both could positively predict loneliness, mobile phone dependence could positively predict sleep quality, and sleep quality and gender had a significant interaction effect on loneliness ( all P<0.05 ). The mediating effect value of sleep quality on mobile phone dependence and loneliness was 0.290 ( 95%CI: 0.186-0.400 ) in males and 0.131 ( 95%CI: 0.084-0.187 ) in females. Conclusion Sleep quality has a mediating effect on mobile phone dependence and loneliness among university students. Male students are susceptible to the negative effects of mobile phone dependence.

OBJECTIVETo investigate whether intracytoplasmic sperm injection (ICSI) can improve the clinical outcomes of the male patients with 100% teratozoospermia.

METHODSWe retrospectively analyzed the clinical data of 152 couples undergoing in vitro fertilization-embryo transfer (IVF-ET), including 75 cycles of IVF and 77 cycles of ICSI. We compared the rates of normal fertilization, high-quality embryos, transferrable embryos, implantation, clinical pregnancy, and abortion between the two groups.

RESULTSIn the 100% teratozoospermia patients the number of transferrable embryos was significantly lower in the IVF than in the ICSI group (78.91% vs 84.92%, P < 0.05), while the rates of normal fertilization and implantation were higher in the former than in the latter (60.26% vs 57.87% and 48.00% vs 39.55%, both P > 0.05). There were no statistically significant differences between the two groups in the female age, Gn days, Gn dose, BMI, infertility duration, endometrial thickness, and basal serum FSH and E2.

CONCLUSIONICSI cannot improve the clinical outcomes of the male patients with 100% teratozoospermia.

Abortion, Spontaneous ; Azoospermia ; Embryo Implantation ; Embryo Transfer ; Female ; Fertilization ; Fertilization in Vitro ; statistics & numerical data ; Humans ; Male ; Pregnancy ; Retrospective Studies ; Sperm Injections, Intracytoplasmic ; statistics & numerical data

The contribution of particles to cardiovascular mortality and morbidity has been enlightened by epidemiologic and experimental studies. However, adverse biological effects of the particles with different sizes on cardiovascular cells have not been well recognized. In this study, sub-cultured human umbilical vein endothelial cells (HUVECs) were exposed to increasing concentrations of pure quartz particles (DQ) of three sizes (DQPM1, <1 μm; DQPM3-5, 3-5 μm; DQPM5, 5 μm) and carbon black particles of two sizes (CB0.1, <0.1 μm; CB1, <1 μm) for 24 h. Cytotoxicity was estimated by measuring the activity of lactate dehydrogenase (LDH) and cell viability. Nitric oxide (NO) generation and cytokines (TNF-α and IL-1β) releases were analyzed by using NO assay and enzyme-linked immunoabsorbent assay (ELISA), respectively. It was found that both particles induced adverse biological effects on HUVECs in a dose-dependent manner. The size of particle directly influenced the biological activity. For quartz, the smaller particles induced stronger cytotoxicity and higher levels of cytokine responses than those particles of big size. For carbon black particles, CB0.1 was more capable of inducing adverse responses on HUVECs than CB1 only at lower particle concentrations, in contrast to those at higher concentrations. Meanwhile, our data also revealed that quartz particles performed stronger cell damage and produced higher levels of TNF-α than carbon black particles, even if particles size was similar. In conclusion, particle size as well as particle composition should be both considered in assessing vascular endothelial cells injury and inflammation responses induced by particles.

OBJECTIVETo investigate the correlation of the fertilization strategy and embryo transfer (ET) time with the incidence of ectopic pregnancy.

METHODSWe selected 3,331 fresh and 2,706 frozen-thawed ET cycles for the patients undergoing in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI). The fresh transfers included 2 546 IVF-ET and 785 ICSI-ET cycles and 2,220 day-3 embryo and 1,111 day-5 blastocyst transfers, while the frozen-thawed transfers included 2,080 IVF-ET and 626 ICSI-ET cycles and 741 day-3 embryo and 1 965 day-5 or -6 blastocyst transfers. We compared the incidence rate of ectopic pregnancy associated with different fertilization strategies and ET time.

RESULTSThe incidence rate of ectopic pregnancy was 1. 41% (36/2 546) in the IVF-ET cycles and 3.44% (27/785) in the ICSI-ET cycles of the fresh transfers, significantly lower in the IVF-ET than in the ICSI-ET cycles (P < 0.01), and it was 1.01% (21/2,080) in the IVF-ET cycles and 0.80% (5/626) in the ICSI-ET cycles of the frozen-thawed transfers, with no remarkable difference between the two groups (P > 0.05). The IVF-ET and ICSI-ET cycles included 2,220 fresh day-3 (F-D3) embryos, 1,111 F-D5 blastocysts, 741 frozen-thawed day-3 (T-D3) embryos, and 1,965 T-D5/6 blastocysts. The incidence rate of ectopic pregnancy was 1.71% (n = 38) in the F-D3, 2.25% (n = 25) in the F-D5, 1.35% (n = 10) in the T-D3, and 0.81% (n = 16) in the T-D5/6 group, respectively, significantly lower in the T-D5/6 than in the other three groups (P < 0.05).

CONCLUSIONThe incidence rate of ectopic pregnancy is associated with fertilization strategies, which is significantly lower in frozen-thawed than in fresh embryo transfers.

Blastocyst ; Embryo Transfer ; adverse effects ; methods ; statistics & numerical data ; Female ; Fertilization in Vitro ; adverse effects ; methods ; statistics & numerical data ; Humans ; Incidence ; Pregnancy ; Pregnancy Rate ; Pregnancy, Ectopic ; epidemiology ; etiology ; Sperm Injections, Intracytoplasmic ; adverse effects ; methods ; statistics & numerical data

Objective To report the effect of expanded neck and mastoid region flap in the reparation of facial scars.Methods Total 8 patients were included from January 2007 to May 2011.Tissue expanders were implanted in the neck and mastoid region after we selected suitable expander on the basis of an area of facial scars.Three to six months later,the expanded neck and mastoid region flap was used to repair large area of facial scars.Results From January 2007 to May 2011,we used expanded neck and mastoid region flap to resurface the facial scars in 8 patients.One patient appeared small size of necrosis (0.3 cm× 2.0 cm to 0.5 cm× 2.0 cm) in the distal area and healed after dressing changes.All the other patients healed completely.The period of follow-up was 6 months to 2 years.The flaps matched well to the surrounding skin in terms of color and good texture.Conclusions The method of combined expander neck and mastoid region skin flaps to repair facial scars is suitable.We believe this is a good option of repairing large area of facial scars.

Objective To evaluate and analyze the clinical effect of comprehensive rehabilitation therapy after arthroscopic rotator cuff repair using suture-bridge technique for full-thickness rotator cuff tears.Methods Forty-one patients (20 males,21 females; mean age 52.2 years) with full-thickness rotator cuff tears were treated with arthroscopic rotator cuff repair using suture-bridge technique between June 2010 and January 2012 in our hospital.After arthroscopic rotator cuff repair,the patients were randomly assigned to a treatment group (21 patients) or a control group (20 patients).The treatment group received systematic rehabilitation therapy including rehabilitation education,physical modalities treatment and rehabilitative training additionally,while the control group only accepted the routine rehabilitation therapy including stretching and muscle strength training.The outcome was evaluated at 6 months after surgery,by employing visual analogae scale (VAS),the range of motion (ROM) testing of shoulder joint flexion and rotation,the rating scale of University of California at Los Angeles (UCLA),and the shoulder index of American shoulder and elbow surgeons (ASES).Results The mean follow-up period was 15.6 months (8-24 months).Prior to intervention,there was no significant difference in any parameter between the two groups (P ＞ 0.05).Six months later,all scores of assessments changed:in treatment group VAS (1.7 ± 1.5),ROM [flexion (168.3±31.3)°,rotation (47.2±11.2)°],UCLA(30.7 ±4.13) and ASES (85.1 ±15.67); in control group VAS(3.8±2.2),ROM[flexion (121.2 ±53.6)°,rotation (32.9 ±14.9)°],UCLA(18.3 ±4.94) and ASES (36.4 ± 17.70).Significant changes occurred in both groups in all the parameters after treatment when compare to baseline (P ＜ 0.05).Conclusions Comprehensive rehabilitation therapy is an effective approach for improving motor ability of the shoulder in patients after arthroscopic rotator cuff repair with suture-bridge technique for their full-thickness rotator cuff tears.

Objective To investigate the effects of repeated intrathecally kinesin superfamily protein 17 (KIF17) antisense oligodeoxynucleotide (ODN) on the expression of mLin10 and NR2B in spinal cord in a mouse model of bone cancer pain.Methods Fifty-six male C3H/HeJ mice,aged 4 ～ 6 weeks,weighting 20 ～ 25 g,were randomly divided into two groups:sham operation group (group S,n=20) and bone cancer pain group (group T,n=36).20μl α-minimal essence medium (α-MEM) which containing 2× 105 NCTC2472 osteosarcoma cells was injected into the intramedullary space of the right femur in group T.In group S,no cancer cell was instead.The number of spontaneous flinches (NSF) and the paw withdrawal mechanical threshold (PWMT) were measured at the day before (base) and the days 4,7,10 and 14 after inoculation.According to the corresponding time points,twenty-four mice were sacrificed for determination the expression of KIF17,mLin10 and NR2B using Western blot.Then,the mice of group T were randomly divided into three groups (n=8,T1,T2,T3,group).In group S and group T1,Saline 5 μl was injected intrathecally.KIF17 sense ODN and antisense ODN,5 μg/5μl were respectively injected in group T2 and T3 for 6 consecutive days.Pain behaviors were assessed at the days 2-6 after the first injection.And determinated the KIF17,mLin10 and NR2B expression,again.Results Compared with group S,the NSF was increased and the PWMT was decreased at the days 7,10 and 14 after inoculation in group T (P＜0.05).Compared with the base ((0.65±0.15),(1.06±0.06),(1.01±0.14)),the expression of KIF17,mLin10 and NR2B (14d:(1.13 ±0.06),(2.17 ± 0.37),(1.85 ± 0.32)) were increased at the days 7,10 and 14 after inoculation in group T(P＜0.05).During the course of the injection,compared with group T1 and T2,the NSF was decreased and the PWMT was increased significantly in the group T3(P＜0.05),the expression of KIF17,mLin10 and NR2B((0.88±0.08),(0.96±0.11),(1.03±0.08)) were reduced in group T3 (P＜0.05).Conclusion Intrathecal KIF 17 antisense ODN in the mice of bone cancer pain improves the pain behaviors,and inhibits the up-regulated of KIF17,mLin10 and NR2B during the course of the injection.

Objective To explore the clinical value of two dimensional and color Doppler echocardiography in diagnosis of infants with coarctation of the aorta(CoA),and to analyse the cause of missed diagnosis and misdiagnosis.Methods The echocardiographic characteristics of 87 infants with CoA were analyzed retrospectively,and the results were compared with surgical findings.Results Seventy-five patients were correctly diagnosed,while 9 patients were missed and 3 patients were misdiagnosed.Discrete coarctation was found in 67 cases,whereas tubular coarctation was detected in 8 cases of CoA.Conclusions Mastering the echocardiographic characteristics of infants with CoA and carefully scanning the sternum nest section,combined with two dimensional and color Doppler echocardiography,could avoid missed diagnosis and misdiagnosis.

OBJECTIVETo investigate the influence of the rate of morphologically normal sperm (MNS) on the clinical outcomes of conventional in vitro fertilization (IVF) in patients with one retrieved oocyte.

METHODSFrom January 2013 to January 2015, a total of 256 couples with one retrieved oocyte underwent conventional IVF in our center. According to the rate of MNS, the patients were divided into two groups: MNS < 4% (134 cycles) and MNS ≥ 4% (122 cycles). We compared the rates of no transferrable embryo cycles, fertilization, cleavage, normal fertilization, abnormal fertilization, high-quality embryo and transferrable embryo between the two groups. A total of 75 fresh embryo transfer cycles were performed, 43 in the MNS < 4% group and the other 32 in the MNS ≥ 4% group. We also compared the rates of implantation, clinical pregnancy and abortion between the two groups.

RESULTSThere were no statistically significant differences between the two groups in the rates of no transferrable embryo cycles, fertilization, cleavage, normal fertilization, abnormal fertilization, high-quality embryo and transferrable embryo (P > 0.05). The rates of implantation, clinical pregnancy and abortion exhibited no remarkable differences either in the fresh embryo transfer cycles between the two groups (P > 0.05).

CONCLUSIONThe rate of MNS does not affect the clinical outcomes of conventional IVF in patients with one retrieved oocyte.

Abortion, Spontaneous ; Cleavage Stage, Ovum ; Embryo Implantation ; Female ; Fertilization ; Fertilization in Vitro ; methods ; statistics & numerical data ; Humans ; Male ; Oocyte Retrieval ; Pregnancy ; Pregnancy Rate ; Single Embryo Transfer ; statistics & numerical data ; Sperm Count ; Spermatozoa ; physiology