In order to elucidate the ultrastructural changes of human spermatozoa afteradministration of gossypol acetate 40 mg/day for 50 days,freeze-replica techniqueswere employed.In addition to the ordinary changes of spermatozoa,such as swelling,wasting,atrophy,tortuosity,nodulation in the head and/or tail region and fracture betweenhead and tail,the internal structure,biomembrane and intramembranous particles ofsperm also showed relatively more sensitive changes.The changes of biomembranerevealed certain shift in regard to the firmness of reciprocating attachment of inner-and outer-leaflets of the unit membrane.On the other hand,the changes of intra-membranous particles revealed a specialized arrangement,this is,on the plasmamembrane of head and tail they were concentrated into lattice work,whereas,in thehind-head region they accumulated as clusters.In the hind-acrosomal membranetwo types of particles,large and small,may be distinguished,the smaller ones werearranged orderly in lines of all directions.As for the nuclear pores,no changewas found in this study.It is considered that the influences of gossypol upon human spermatozoa,firstof all,were shown in the biomembrane and intramembranous particles,and theordinary changes in appearance were the secondary result.In the discussion,it'ssuggested that a special agent,gossypol receptor,responsible for the gossypol effectsto the sperm,may be present in the plasma membrane of the spermatozoa.

Objective To evaluate the clinical significance of bladder saline perfusion before catheter removal in TURP patients. Methods From 2009 to 2011,140 patients received TURP were enrolled in this study.Patients were divided into perfusion group (70 cases with bladder saline perfusion before catheter removal) and control group (70 cases without perfusion). Results Comparing with the control group (33.1 ± 5.4) min,the time waiting for urination was shorter in perfusion group ( 3.7 ± 0.2 ) min ( P ＜0.05 ).The recovering time to normal urination was shorter in perfusion group (7.7 ± 1.2 ) d than in control group (11.7 ± 1.3) d (P ＜ 0.05 ) as well.In the first urine after catheter removal and first urine on the next day morning,white blood cell count of 2 groups (4.5 ± 0.1 ) vs ( 6.9 ± 3.5 ) ; ( 3.7 ± 0.2 ) vs (4.3 ±0.5) had significant differences ( P ＜ 0.05 ). Conclusion Bladder saline perfusion before catheter removal in TURP patients is simple and effective for the restoration of normal voiding.

Objective To investigate the changes of cardiac function at pre -and post -treatment in preterm infants with patent ductus arteriosus (PDA)in order to guide drug treatment.Methods Totally 84 preterm infants with PDA admitted to Neonatal Intensive Care Unit of Xuzhou Hospital Affiliated to Medical College of Southeast University from July 201 2 to June 201 4 were divided into 4 groups according to treatment drug:Ibuprofen group (27 cases),Indo-methacin group (24 cases),control group (1 1 cases),and Paracetamol group (22 cases).Patients were also divided into symptomatic PDA group (38 cases)and asymptomatic PDA group (46 cases)according to severity;PDA closed group (69 cases)and PDA unclosed group (1 5 cases)according to sequel.The level of plasma brain natriuretic pep-tide (BNP),cardiac troponin I (cTnI),correct QT intervals dispersion (QTcd)were monitored pre -and post -treat-ment.Data were analyzed by using SPSS 1 9.0 software.Results Three cardiac markers at post -treatment were of no significant difference among 4 treatment drugs.The changes of the cTnI and QTcd at pre -and post -treatment were of no significance.The level of BNP in symptomatic PDA group was significantly higher than that in asymptomatic PDA group at pre -treatment [(378 ±94)ng/L vs (1 47 ±75)ng/L,t =2.584,P =0.01 4].In the symptomatic PDA group,the level of BNP at post -treatment [(1 82 ±81 )ng/L]was significantly decreased than that at per -treatment (t =2.741 ,P =0.009).In the asymptomatic PDA group,there was no significant difference between the pre - and post -treatment [(1 21 ±61 )ng/L]in the level of BNP (t =1 .254,P =0.207).There was no significant difference in the level of BNP at per -treatment between PDA closed group and PDA unclosed group [(274 ±91 )ng/L vs (289 ± 87)ng/L,t =-0.874,P =0.391 ].In PDA closed group,the level of BNP at post -treatment [(1 21 ±74)ng/L] was significantly decreased compared with that at per -treatment (t =3.580,P =0.000).In PDA unclosed group, there was no significant difference between the pre - and post -treatment [(245 ±74)ng/L]in the level of BNP (t =0.854,P =0.392).Conclusion Early medication intervention for symptomatic PDA of preterm infants is benefi-cial for the closure of PDA and for attenuating negative effects on cardiac function of PDA.

The epithelial cells of normal human epididymis were studied by ultrathin section and freeze-etching replica techniques. It was found that the pseudostratified epithelium is composed mainly of dark-columnar, clear-columnar, ciliated, basal and few narrow-columnar cells. The ultrastructure of the epithelia from the head region to the tail of the epdidymis reveals no distinctive segmental demarcation, but transits gradually. The ciliated cells distributed chiefly in the initial segment of epididymis, fibril-like elements were found frequently in the supranuclear region of its cytoplasm, yet their function remains unknown. The dark-columnar cells as well as the clearcolumnar and the cillated cells of the head region of the epididymis exhibit the cytological ultrastructural characteristic features of absorption as is often the case with endocytotic vesicles and lysosomes, etc. These morphologycal findings confirm the view that these cells, particularly the dark-columnar cell, appear to be responsible to the absorption of testicular secretion in the epididymis. The clear-columnar and the dark-columnar cells, especially the former, in the distal portion of the epididymis possesses the secretory cytological characterestics. It is suggested that these cells were concerned with the production of the epididymis semen.In the discussion, the authors pointed out that the scientific basis for the detailed functions of the epididymis remains to be investigated further.

OBJECTIVETo investigate the association between two polymorphisms of follicle stimulating hormone receptor (FSHR) gene and polycystic ovary syndrome (PCOS) susceptibility.

METHODSCase-control studies on relationship of Thr307Ala and Asn680Ser polymorphisms in FSHR gene and PCOS susceptibility were searched from PubMed, ISI web of knowledge, EBSCO, and China National Knowledge Infrastructure (CNKI) databases up to March 21, 2013. The pooled odds ratio (OR) and 95% confidence interval (CI) were calculated using fixed- or random-effect model based on heterogeneity test in 5 genotype models analyses.

RESULTSA total of 11 studies were included in the Meta-analysis. The random-effect analysis showed Asn680Ser was significantly associated with the reduced susceptibility to PCOS with dominant model (Asn/Asn+Asn/Ser vs. Ser/Ser, OR=0.83, 95% CI: 0.69-1.00), recessive model (Asn/Asn vs. Asn/Ser+ Ser/Ser, OR=0.84, 95% CI: 0.72-0.98), homozygote comparison (Asn/Asn vs. Ser/Ser, OR=0.79, 95% CI: 0.63-0.98), and the allele contrast (Asn vs. Ser, OR=0.87, 95% CI: 0.79-0.97) respectively(P=0.02, I(2)=56.0%), being protective factors for PCOS. However, no significant associations were found between Thr307Ala and PCOS.

CONCLUSIONThere might be a significant association between Asn680Ser polymorphism and PCOS.

Female ; Genetic Predisposition to Disease ; Humans ; Polycystic Ovary Syndrome ; genetics ; Polymorphism, Genetic ; Receptors, FSH ; genetics

Objective:To analyze the diagnosis and treatment of neonatal neuroblastoma (NB) by summarizing its clinical characteristics.Methods:This study retrospectively recruited 14 neonates with NB in Beijing Children's Hospital (National Center for Children's Health) from February 1, 2015, to February 1, 2020. Medical records and follow-up data as of February 29, 2020, were collected, and clinical staging based on International Neuroblastoma Staging System, risk grouping based on American Childhood Oncology Group risk grouping system, diagnosis, treatment, and prognosis were analyzed. According to whether surgical treatment was performed in the neonatal period or not, these subjects were divided into surgical and non-surgical groups. A descriptive statistical analysis was used for data analysis.Results:(1) Neonates with NB accounted for 0.063% (14/22 006) of the total number of newborns admitted to the hospital during the same period. The 14 cases were all full-term aged 15 d (8 h-23 d) at admission. Tumors were found in seven cases in prenatal examinations, while others presented with shortness of breath (three cases), abdominal distension (two cases), fever (one case), and dysuria and difficult defecation after birth (one case). (2) The primary tumor sites included the adrenal gland (eight cases), posterior mediastinum (three cases), retroperitoneum (two cases), and sacrococcygeal (one case). Three cases had extensive diffuse liver metastasis at admission. (3) Except for two cases who refused to examine, the serum neuron-specific enolase of 12 cases was 57.2 ng/ml (35.9-158.3 ng/ml) during hospitalization, and the urine vanillyl-mandelic acid creatinine of four cases was 2 304.940 (685.748-9 595.314). (4) Primary tumor sites were found in 14 cases by imaging examination. Bone scanning was performed in three cases, including one with a concentrated shadow of the right sacroiliac joint and two with no abnormalities. Ten cases underwent bone marrow aspiration and all with normal results. (5) Of the ten neonates received surgery (the surgical group), nine had the primary tumor wholly removed, without chemotherapy after the operation, and the tumor-free survival period was 19 months (1-45 months). One case (case 5) had a substantial primary tumor that could not be completely resected. The patient underwent a second surgery five months after the first operation due to disease progression and received postoperative chemotherapy. The child had stopped chemotherapy for 24 months and survived without a tumor. (6) In the non-surgical group (cases 11 to 14), the tumor in case 11 who refused chemotherapy shrank spontaneously after discharge, and the patient survived for 20 months with the tumor. The parents of the case 12 withdrew treatment during hospitalization, while the primary tumor and metastases disappeared after discharge, and the specific tumor markers gradually decreased to normal levels. The patient has been tumor-free survived for 25 months. Case 13 received mediastinal tumor resection and chemotherapy during infancy. At the end of the follow-up, chemotherapy had been stopped for 12 months, and the patient survived without a tumor. Case 14 withdrew treatment and died. (7) Among the ten cases in the surgical group, one patient's pathological result indicated a composite tumor, while the others were low differentiated neuroblastoma. There was no MYCN gene amplification, 1p36 deletion, or 11q23 deletion in the ten cases. (8) Among the ten children in the surgical group, nine were in stage 1, and one was in stage 4S (case 5). Nine cases were classified into extremely low-risk groups, while the other was in the low-risk group. The four cases in the non-surgical group could not be grouped by risk. Conclusions:Clinical manifestations of neonatal NB are often atypical. NB in stage 4S might resolve spontaneously, and expectant observation may be considered. The overall prognosis of neonatal NB is generally good, but further researches are needed.