Impact of life events on mental health of recruits: The mediating effects of negative cognitive processing bias / 解放军医学杂志

Objective: To explore the relationship of life events, negative cognitive processing bias (NCPB) and mental health of recruits. Methods: The Life Events Scale (LES), NCPB questionnaire and Military Mental Health Scale (MHS) were used for investigation in 2193 recruits from a certain troop. The SPSS 22.0 software was used to analyze the data. T-test and ANOVA were adopted to explore the influence of demographic factors on the mental health of recruits. Correlation analysis was performed to investigate the relationship of life events and NCPB to the mental health of recruits. The influence of life events and NCPB on the mental health of recruits was investigated by regression analysis. The mediating effect analysis was conducted for in-depth discussing the influence of NCPB in life events on the mental health of recruits. Results: Male and highly educated recruits had significantly higher scores in mental health ability and quality (P<0.01, P<0.05). Scores of life events and NCPB total score and its factors were negatively correlated with the mental health ability and quality of recruits (r=-0.07-0.46, P<0.01), and positively correlated with the mental health status (r=0.08-0.45, P<0.01). The mental health status of recruits was predictable with negative events, negative atention bias and negative rumination bias in an interpretation rate of 24.1%. Path analytic model showed that NCPB mediated the relationship between life events and mental health of recruits. Conclusion: Life events and NCPB are closely related with the mental health of recruits, and NCPB acts as an intermediary between life events and mental health; reduces life events and NCPB is helpful in maintaining and promoting the mental health of recruits.

Effect of Two Kinds of Kinesio Taping Methods on Shoulder Pain in Hemiplegic Patients with Stroke during Spasm Period / 中国康复理论与实践

Objective To observe the effect of two kinds of Kinesio taping methods on shoulder pain in hemiplegic patients with stroke during spasm period. Methods From October,2015 to September,2017,75 stroke hemiplegic patients with shoulder pain during spasm period were randomly divided into group A(n=25),group B(n=25)and control group(n=25).Three groups were given conventional treatment,and group A and group B received two kinds of Kinesio taping methods,respectively.Be-fore and four weeks after treatment,the shoulder pain was assessed with Visual Analogue Scale(VAS),the motor function of upper limb was assessed with Fugl-Meyer Assessment(FMA),and their activities of daily living was assessed with modified Barthel Index(MBI). Results After treatment, the score of VAS significantly decreased in all groups (P<0.001), and was lower in groups A and B than in the control group(P<0.05),especially in group A(P<0.01);the scores of FMA and MBI signifi-cantly increased(P<0.001),and was higher in groups A and B than in the control group(P<0.05),especially in group A(P<0.05). Conclusion Kinesio taping combined with rehabilitation training for the treatment of stroke patients following hemiple-gia during spasm period can relieve the shoulder pain and improve the motor function of upper limb and activi-ties of daily living.The curative effect varies with different taping methods.

Clinical study of femtosecond laser in vitrectomy combined with phacoemulsification and intraocular lens implantation / 国际眼科杂志(Guoji Yanke Zazhi)

AIM: To analyze the clinical value of femtosecond laser in vitrectomy combined with phacoemulsification and intraocular lens (IOL) implantation. METHODS: We selected 100 patients ( 102 eyes ) undergoing vitrectomy combined with phacoemulsification and IOL implantation in our hospital from October 31 2013 to October 31 2015. They were divided into routine operation group, 50 cases (52 eyes), and femtosecond laser group, 50 cases (50 eyes). The parameters were compared between the two groups, including total operation time, postoperative complications ( elevated intraocular pressure, uveitis, vitreous hemorrhage, and retinal detachment ), postoperative intraocular pressure and postoperative half of the visual acuity ( near visual acuity, visual acuity, uncorrected visual acuity, corrected visual acuity). RESULTS: The difference on total operation time of the two groups was statistically significant ( P 0. 05). There were no significant differences on internal pressure, near visual acuity, far visual acuity, uncorrected visual acuity, corrected visual acuity at 6mo after surgery (P>0. 05). CONCLUSION: Femtosecond laser in vitrectomy combined with phacoemulsification and IOL implantation has a high safety and efficacy with the advantages as accurate, efficient.

Clinical research progress of anti-proprotein convertase subtilisin/kexin type 9 (pcsk9) monoclonal antibodies / 中国药学杂志

To summarize the data from clinical trials of anti-proprotein convertase subtilisin/kexin type 9 (PCSK9) monoclonal antibodies (mAbs) in patients with hypercholesterolaemia. Based on systematic literature review, theresults of clinical trials of different anti-PCSK9 mAbs were presented and evaluated. In phase I, II, III trials, anti-PCSK9 mAbs resulted in 50%-60% reduction in low-density lipoprotein-cholesterol (LDL-C) level and had a lower incidence of adverse effects, compared with placebo or ezetimibein patients with hypercholesterolaemia. Anti-PCSK9 mAbs have demonstrated a significant effect of reducing LDL-C and were well tolerated in short-term (up to 52 weeks) trials. Large phase III trials are ongoing to evaluate the long-term safety and efficacy as well as the impact of these promising new agents on cardiovascular outcomes.

Use of evidence-based pharmacotherapy for secondary prevention of coronary heart disease: a Chinese medicine hospital versus a general hospital / 中国结合医学杂志

<p><b>OBJECTIVE</b>To determine differences in adherence to secondary prevention guidelines (pharmacological interventions) among coronary heart disease (CHD) patients between a Chinese medicine (CM) hospital and a general hospital in a Chinese city.</p><p><b>METHODS</b>Medical records of 200 patients consecutively discharged from the CM hospital and the general hospital for CHD were reviewed to determine the proportions of eligible patients who received antiplatelet agents, β-blockers, angiotensin-converting enzyme (ACE) inhibitors or angiotensin receptor blockers (ARBs) and statins at discharge. The effects of patient characteristics and hospital type on the use of these medicines were estimated using logistic regression models.</p><p><b>RESULTS</b>Patients discharged from the CM hospitals were older; more likely females; had greater history of hyperlipidemia, cerebrovascular diseases and less smoker (P<0.01 or P<0.05). They were less likely to receive coronary angiography and percutaneous coronary intervention, and had a longer length of stay than those discharged from the general hospital (P<0.01 or P<0.05). There were no significant differences in antiplatelet agents (96% vs. 100%, P=0.121) or statins (97.9% vs. 100%, P=0.149) use between the CM hospital and the general hospital. In multivariable analyses that adjusted for patient characteristics and hospital type, there was no significant difference in use of β-blockers between the CM hospital and the general hospital. In contrast, patients discharged from the CM hospital were less likely to receive ACE inhibitors/ARBs compared with those discharged from the general hospital (odds ratio: 0.3, 95% confidence interval: 0.105-0.854).</p><p><b>CONCLUSION</b>In this study, the CM hospital provides the same quality of care in CHD for prescribing evidence-based medications at discharge compared with another general hospital except for ACE inhibitors/ARBs use.</p>

Change of peripheral blood appetite regulation factor of anorexia children and infect of child anorexia granule / 中国中药杂志

Study the infect of child anorexia granule on serum ghrelin and leptin of anorexia children and its clinical efficacy. Selected 81 cases of anorexia children aged 1-6 years old into treatment group (42 cases) and control group (39 cases), in addition, 30 case healthy children as healthy control group. The control group children were treated with domperidone suspension 0.3 mg x kg(-1) x d(-1), tid, orally 30 minutes before meals. Treatment group were treated with child anorexia granule, 1-3 years 1 package, bid; 4-6 years 1 package, tid; po, 4 weeks as a course of treatment. Study the change of serum ghrelin and leptin before and after therapy. The study demonstrates that before treatment, the serum ghrelin level of disease group was lower than healthy group (P < 0.01), and the serum leptin level was higher than healthy group (P < 0.01). After treatment, the serum ghrelin level both increase, and the serum leptin decline. And the change of treatment group was significantly different with control group (P < 0.01). And the clinical effective rate are 95.23% and 74.35% (P < 0.01). After 6 months of follow-up visit, the children weight significantly increase in treatment group (P < 0.01). Results indicate that child anorexia granule can facilitate secretion of ghrelin, and inhibit secretion of leptin, so as to work up an appetite. And the molecular mechanism is its infect on serum ghrelin, leptin.

Progress in the study of some important natural bioactive cyclopeptides / 药学学报

Natural cyclopeptides are hot spots in chemical and pharmaceutical fields because of the wide spreading bio-resources, complex molecular structures and various bioactivities. Bio-producers of cyclopeptides distribute over almost every kingdom from bacteria to plants and animals. Many cyclopeptides contain non-coded amino acids and non-pepditic bonds. Most exciting characteristic of cyclopeptides is a range of interesting bioactivities such as antibiotics gramicidin-S (2), vancomycin (3) and daptomycin (4), immunosuppressive cyclosporin-A (1) and astin-C (8), and anti-tumor aplidine (5), RA-V (6) and RA-VII (7). Compounds 1-4 are being used in clinics; compounds 5-8 are in the stages of clinical trial or as a candidate for drug research. In this review, the progress in chemical and bioactive studies on these important natural bioactive cyclopeptides 1-8 are introduced, mainly including discovery, bioactivity, mechanism, QSAR and synthesis.

Evaluation of adrenocortical function in children with severe and critical enterovirus 71 infection / 中华儿科杂志

<p><b>OBJECTIVE</b>To evaluate the adrenocortical function in children with severe and critical enterovirus 71 infection by using a high-dose (250 µg) adrenocorticotropic hormone (ACTH) stimulation test. And to at provide experimental basis for glucocorticoid in the treatment of hand-foot-and-mouth disease (HFMD).</p><p><b>METHOD</b>This was a prospective multi-center study which was carried out in PICUs of Beijing Children's Hospital, Zhengzhou Children's Hospital, Kaifeng Children's Hospital and Linyi People's Hospital in Shandong province. Children with severe and critical hand-foot-mouth disease admitted to PICUs of the four hospitals from June 2009 to April 2010 were enrolled in this study, and EV71 virus nucleic acid test and high-dose (250 µg) ACTH stimulation started at the same time. EV71 virus nucleic acid positive 51 cases were eventually enrolled in the study. Cortisol test was performed at baseline (T0) and after high-dose (250 µg) ACTH stimulation at 30 minutes (T30), 60 minutes (T60) in the first 6 hours after admission, but before glucocorticoid was given. The adrenocortical function was evaluated according to ΔTmax [ΔTmax=(T30, T60 maximum)-T0]. Diagnostic criteria of adrenal insufficiency (AI) is increment (ΔTmax)≤9 µg/dl.</p><p><b>RESULT</b>The incidence of AI in 51 cases was 52.94% (27/51). The incidence of AI in severe group was 44.74% (17/38), which was significantly higher in critical group 76.92% (10/13), P<0.05. Of the cases with a pediatric critical illness score (PCIS)≤70, 81.82% (9/11) had adrenal insufficiency, and it was 28.57% (4/14) when PCIS≥90. The incidence of AI was 75% (6/8) and 48.84% (21/43) in death and survivor group respectively, but there were no significant difference between the two groups (P>0.05). Baseline (T0) cortisol in death group was higher than survivor group (P<0.05).</p><p><b>CONCLUSION</b>AI may occur in children with enterovirus 71 infection. The critical enterovirus 71 infection had a high incidence of AI. AI may affect the prognosis of patients with severe and critical enterovirus 71 infection. Exogenous glucocorticoids administration may be considered when AI is identified or highly suspected. The timing, dosage and regimen of glucocorticoid are still unclear. Further animal experiments and clinical trials are needed.</p>

Study of healing mechanism of acellular dermal matrix in the treatment of anal fistula / 中华胃肠外科杂志

<p><b>OBJECTIVE</b>To evaluate the efficacy of acellular dermal matrix(ADM) in the closure of anal fistula in an experimental porcine model, and to explore its healing mechanism.</p><p><b>METHODS</b>The fistula-in-ano model was created and treated with ADM in the porcine model (n=14). Fistula specimens were obtained at hour 12, 24 and day 3, 7, 14, 28, 60 respectively with 2 pigs in each time point. Hematoxylin and eosin staining and immunohistochemical staining for the alpha smooth muscle actin (α-SMA) were performed.</p><p><b>RESULTS</b>At 12 hours after implantation, neutrophils and scattered cells with a fibroblastic appearance were present at the interface and began to infiltrate into the ADM. The cell density increased from hour 12 (218.2±58.2) to day 7(998.7±128.0) (P<0.01), and decreased from day 7 to day 28. Mature vessels and myofibroblasts stained with α-SMA were identified at the edge of ADM at day 7. The density of vessels (11.2±3.3 vs. 30.5±5.2, P<0.01) and myofibroblasts (3.8±0.8 vs. 6.8±0.4, P<0.01) increased from day 7 to day 14. Partially organized bundles of muscle were found at day 60.</p><p><b>CONCLUSIONS</b>ADM is a reasonable new option for the closure of anal fistula. The ability of ADM to become vascularized and remodeled by autologous cells may be advantageous for anal fistula healing and other chronic septic wound.</p>

Correlation of Skp2 overexpression to prognosis of patients with nasopharyngeal carcinoma from South China / 癌症

S-phase kinase-associated protein 2 (Skp2), which plays a role in cell cycle regulation, is commonly overexpressed in a variety of human cancers and associated with poor prognosis. However, its role in nasopharyngeal carcinoma (NPC) is not well understood. In this study, we examined the clinical significance of Skp2, with a particular emphasis on overall survival (OS) and disease-free survival (DFS), in NPC cases in South China, where NPC is an epidemic. Additionally, we explored the function of Skp2 in maintaining a cancer stem cell-like phenotype in NPC cell lines. Skp2 expression was assessed for 127 NPC patients using tissue microarrays and immunohistochemistry and analyzed together with clinicopathologic features, OS, and DFS. Skp2 expression was detectable, or positive, in 75.6% of patients. Although there was no correlation between Skp2 and any clinicopathologic factor, Skp2 expression significantly portended inferior OS (P = 0.013) and DFS (P = 0.012). In the multivariate model, Skp2 expression remained significantly predictive of poor OS [P = 0.009, risk ratio (RR) = 4.06] and DFS (P = 0.008, RR = 3.56), and this was also true for clinical stage (P = 0.012 and RR=3.201 for OS; P = 0.002 and RR=1.94 for DFS) and sex (P = 0.016 and RR=0.31 for OS; P = 0.006 and RR = 0.27 for DFS). After Skp2 knockdown, a colony formation assay was used to evaluate the self-renewal property of stem-like cells in the NPC cell lines CNE-1 and CNE-2. The colony formation efficiency in CNE-1 and CNE-2 cells was decreased. In Skp2-transfected CNE-1 and CNE-2 cells, side population (SP) proportion was increased as detected by flow cytometry. Skp2 is an independent prognostic marker for OS and DFS in NPC. Skp2 may play a role in maintaining the cancer stem cell-like phenotype of NPC cell lines.

Efficacy evaluation of anal intersphincteric resection with direct coloanal anastomosis for T1-2 ultra-low rectal cancer / 中华胃肠外科杂志

<p><b>OBJECTIVE</b>To evaluate the oncological and functional outcomes of intersphincteric resection (ISR) in T(1-2) ultra-low rectal cancer.</p><p><b>METHODS</b>From March 2000 to March 2007, ISR with total mesorectal excision (TME) was performed in 40 patients with very low rectal cancer,among whom total ISR in 5 patients, partial ISR in 23 patients, and partial ISR with partial dentate line preservation (modified partial ISR) in 12 patients. The preoperative tumor staging was T(1-2)N(0-1)M(0).</p><p><b>RESULTS</b>Morbidity was identified in 3 patients including anastomotic leakage in 1 patient and wound infection in 2 patients, and there was no postoperative mortality. The 5-year overall survival rate was 97%, and 5-year disease-free survival rate was 86%. Both patients with modified partial ISR (P=0.004) and patients with partial ISR (P=0.008) had significantly better continence than those with total ISR, and patients with a diverting stoma had significantly better continence (P=0.043) than those without a stoma at 12 months after surgery.</p><p><b>CONCLUSIONS</b>ISR is a safe procedure for sphincter-saving rectal surgery in selected patients with very low rectal tumors. A temporary diverting stoma may be beneficial to the improvement of anal function. Modified partial ISR under the precondition of radical resection shows better anal function and lower rate of incontinence.</p>

Prophylactic irradiation of cervical lymph nodes for Stage-N0 nasopharyngeal carcinoma / 癌症

<p><b>BACKGROUND AND OBJECTIVE</b>It is controversial for the irradiation level and dose of the regional prevention for naspharyngeal cancer (NPC) with one or both cervical lymph node-negative neck. The study was to analyze the proophylactic irradiation of cervical lymph nodes for Stage -N0 NPC patients.</p><p><b>METHODS</b>From January 2002 and December 2004, 205 NPC patients with negative lymphadenopathy diagnosed by imaging, were retrospectively analyzed. Before treatment, each patient underwent CT or MRI. Facial-cervical portals and 6-8 MV photons were used in radiotherapy. Doses applied were 60-80 Gy to the nasopharynx and 46-64 Gy to the neck without lymphadenopathy. Consecutive radiotherapy was performed employing conventional fractionation of 2 Gy/fraction, once a day, for a total of five fractions per week. Chemotherapy was administered to 60 patients. Median follow-up was 44 months. The survival function was calculated according to the Kaplan-Meier method. A log-rank test was used to compare the differences in survival. The Cox proportional hazards model was used for multivariate analysis. A total of 205 patients with stage-N0 NPC were divided into an upper-neck irradiation group and an entire-neck group.</p><p><b>RESULTS</b>The 3-year overall survival rate (OS) was 92.9% and the 3-year disease-free survival rate (DFS) was 91.9%. A total of 88 patients received irradiation to the upper neck and 117 to the entire neck. The rate of regional failure for the upper-neck group and the entire-neck group were 2.27% and 0%, respectively (P>0.05). The rates of regional failure in patients with T1-, T2-, T3- and T4-stage disease were 0, 3.08%, 0, and 0, respectively (P>0.05). The rates of regional failure in the patients both without and with local failure were 1.03% and 0, respectively (P>0.05). The 1-and 3-year OS for the upper-neck group were 97.7% and 94.2%, and the 1- and 3-year OS for the entire-neck group were 97.4% and 91.9% (P=0.950). The 1- and 3-year DFS for the upper-neck group were 96.6% and 92.9%, and the 1- and 3-year DFS for the entire-neck group were 95.6% and 90.9% (P= 0.730). In multivariate analysis, sex (P=0.039) and T stage (P=0.004) were independent prognosis factors for patients with stage-N0 NPC.</p><p><b>CONCLUSIONS</b>Prophylactic irradiation to the upper neck does not influence regional failure or long-term survival in the patients with stage-N0 NPC. Radiotherapy to the upper neck (levels II, III, VA) is recommended for the patients with stage-N0 NPC. Involvement of the parapharyngeal space, T stage, and the rates of local failure do not influence regional failure in these patients. Sex and T stage were independent prognosis factors of stage-N0 NPC patients.</p>

Tonsillar carcinoma: analyses of the therapy and prognostic factors / 中华耳鼻咽喉头颈外科杂志

<p><b>OBJECTIVE</b>To retrospectively analyze the therapeutic effect on patients with tonsillar carcinoma and factors affecting their prognosis.</p><p><b>METHODS</b>Clinical data of 61 patients pathologically confirmed with tonsillar carcinoma without distant metastasis were analyzed. All the patients were treated in Cancer Center of Sun Yat-sen University from April 1997 to April 2008. There were 2 patients with undifferentiated carcinoma, 26 with poorly differentiated squamous cell carcinoma and 33 with median-well differentiated squamous cell carcinoma. According to the AJCC 2002 staging criteria for head-neck cancers, there were 9 staged I cases, 7 staged II cases, 23 staged III cases and 22 staged IV cases. The treatment was radiotherapy alone in 27 cases, radiotherapy combined with chemotherapy in 23 cases, surgery combined with postoperative radiotherapy in 6 cases, neoadjuvant chemotherapy plus surgery combined with postoperative radiotherapy in 3 cases, radiotherapy with salvage surgery in 2 cases.</p><p><b>RESULTS</b>The overall 5-year survival rate was 50.2%. For 16 cases with staged I-II staged, there were 8 cases with radiotherapy alone, 5 years survival was 50.0%, 6 cases with surgery combined with postoperative radiotherapy, 5 years survival was 83.3%. The difference between the two treatments was not significant in statistics (P = 0.318). For III-IV staged 45 cases, there were 19 cases with simple radiotherapy, 5 years survival was 51.5%, 21 cases with radiotherapy combined with chemotherapy, 5 years survival was 36.4%, 5 cases with surgery combined with postoperative radiotherapy, 5 years survival was 75.0%. The difference among the three treatments was not significant in statistics (P = 0.239). According to T stages, the 5-year survival rates of stage T1-T4 cases were 91.8%, 46.8%, 29.1%, 0% respectively (chi(2) = 30.168, P < 0.001). Multivariate analysis demonstrated that T stage, therapeutic effect of primary site and cervical metastatic lymph node were the independent prognostic factors (P < 0.05).</p><p><b>CONCLUSIONS</b>T stage, the therapeutic effect of primary site and cervical metastatic lymph node were the independent prognostic factors. For I-II staged tonsillar tumor cases, based on organ preservation, were tendency to choice simple radiotherapy. For III-IV staged cases, yet the relationships between therapeutic mode and therapeutic effect still need further researches.</p>

Incomplete protective effects of minocycline on traumatic brain injury in rats and mice / 浙江大学学报·医学版

<p><b>OBJECTIVE</b>To evaluate protective effect of minocycline,a semisynthetic tetracycline derivative on different traumatic brain injuries in rats and mice.</p><p><b>METHODS</b>The opened brain trauma was induced in rats and the closed head injury and cold brain injury were induced in mice. In 3 brain trauma models, minocycline (45 mg/kg, ip) was administered twice daily for 2 d before the operation, at 30 min before and 1 h after the operation, and once daily for 2 d following the operation (totally 8 doses in 5 d). After the operation, the behavioral alteration was observed daily, lesion area and survival neuron density were measured at the end of the experiments (14 d after the injuries).</p><p><b>RESULT</b>For rat opened traumatic injury, minocycline promoted the recovery of hindlimb motor activity (inclined board angle), but did not alter other indexes. For mouse closed head traumatic injury, minocycline reduced the neuron loss, but did not improve behavioral dysfunction. For mouse cold injury-induced trauma, minocycline reduced death rate and lesion area, but did not remarkably improve behavior and neuron loss.</p><p><b>CONCLUSION</b>Minocycline only has an incomplete neuroprotective effect on different brain traumatic injuries in rats and mice.</p>

Resistant effect of water decoction of root of Crataegus cuneata on male infertility induced by GTW in rats / 中国中药杂志

<p><b>OBJECTIVE</b>To observe the effects of water decoction of the root of Crataegus cuneata on infertility induced by multi-glucoside of Tripterygium wilfordii (GTW) in rats.</p><p><b>METHOD</b>Male adult rats were randomly divided into five groups, which were treated via gastric gavage of distilled water (1 mL x kg(-1)) , solution of GTW (10 mg x kg(-1)) and three doses of water decoction of root of C. cuneata (1.8, 5.4, 18 g x kg(-1)) + GTW (10 mg x kg(-1)), respectively. 8 weeks later, GTW was stopped and the decoction and water continued for another 4 weeks. And then, all the male rats were copulated with adult female rats. The rates of pregnancy, average numbers of embryos and luteum of female rats, relative weights of reproductive organs, sperm counts, sperm motility and viability were compared among all the groups. The histology and ultrastructure of testis and epididymis were observed, while the concentrations of follicle stimulating hormone (FSH), luteinizing hormone (LH) and testostorone (T) in serum and T in testicular homogenate were detected by radioimmunoassay.</p><p><b>RESULT</b>Compared with those in GTW model group, the embryo numbers, the relative weight of testis and epididymis and sperm counts and motility in C. cuneata groups were increased obviously (P < 0.05). After treatment, the morphological damages of seminiferous tubules and sperms were recovered, while concentrations of T in testicular homogenate were also significantly increased (P < 0.01).</p><p><b>CONCLUSION</b>C. cuneata could relieve the reproductive lesions induced by GTW, and hence improve the uberty of the male infertile model rats.</p>

Influence of Candida albicans on the motility and ultrastructure of human spermatozoa in vitro / 中华男科学杂志

<p><b>OBJECTIVE</b>To explore the influence of Candida albicans (Ca) on the motility and ultrastructure of human spermatozoa and its possible mechanism.</p><p><b>METHODS</b>Semen samples obtained from 10 healthy volunteers by masturbation were prepared by the swim-up technique and sperm density to 40 x 10(6)/ml. The samples were then inoculated at 37 degrees C with different concentrations of a uropathogenic strain of Ca isolated from an outpatient, with initial fungi/spermatozoa ratios varying among 1:1 (Group A), 1:10 (Group B), 1:100 (Group C), 1:1000(Group D), and 1:10,000 (Group E). And Group F containing Ham's F-10 only was found as the negative control. Motion parameters were analysed by computer-aided sperm analyzer (CASA) at 0 hour, 1 hour, 2 hours and 4 hours respectively. Modalities of spermatozoa and possible adherence and/or agglutination were observed under the light microscope. Finally, all the samples were studied by transmission electron microscopy.</p><p><b>RESULTS</b>Distinct adhesion of spermatozoa to Ca and agglutination were noticed. In all the motion parameters, progressive motility was affected most and dependent upon incubation time and bacterial concentration. Progressive motility showed a significant difference between Group A and the control (P < 0.01). With the prolongation of incubation time, other parameters were showing more and more differences. Analysis by electron microscopy revealed multiple ultrastructural damages.</p><p><b>CONCLUSION</b>Ca significantly inhibits human sperm motility and decreases sperm viability in vitro. Its mechanism is possibly related to Ca's adhesion to human spermatozoa and the impairment inflicted by Ca to sperm ultrastructure.</p>

Photomacrography of brain surface for evaluating blood-brain barrier disruption within 24 h after focal cerebral ischemia in mice / 浙江大学学报·医学版

<p><b>OBJECTIVE</b>To establish a new photomacrographic analysis of morphological changes on brain surface to evaluate blood-brain barrier (BBB) disruption.</p><p><b>METHODS</b>Permanent focal cerebral ischemia was induced by middle cerebral artery occlusion (MCAO) in mice. Brains were removed 10 min, 0.5, 1, 3, 6, 12 and 24 h after MCAO. The whole brains and brain slices were photographed by a digital camera. BBB disruption was evaluated by hemorrhage and traced Evans blue (EB) on the brain surface. Fluoremetric quantitation of EB and water content in the brains were also performed at various time points.</p><p><b>RESULT</b>Photomacrographic morphological analysis showed that hemorrhage and traced EB on the surface of the brains significantly increased from 3 h after focal cerebral ischemia,which were correlated to the results in the brain slices. EB content in the ischemic hemispheres was significantly increased from 0.5 h after MCAO, and water content was increased from 1 h after MCAO.</p><p><b>CONCLUSION</b>Photomacrographic measurement is a simple and useful method for evaluating BBB disruption semi-quantitatively, and can detect BBB disruption earlier after focal cerebral ischemia in mice.</p>

Macrophotographic measurement of brain surface area for evaluating brain edema after focal cerebral ischemia in mice / 浙江大学学报·医学版

<p><b>OBJECTIVE</b>To establish a new macrophotographic measurement of brain surface area to evaluate brain edema after focal cerebral ischemia in mice.</p><p><b>METHODS</b>Permanent focal cerebral ischemia was induced by middle cerebral artery occlusion (MCAO) in mice. The brains were removed 10,30 min,1,3,6,12 and 24 h after MCAO, and photographed in dorsal and lateral views by a digital camera. Then, 6 coronal slices of 1 mm thick were cut and photographed. Finally, the water content of brain tissue was measured by heating at 110 degrees C for 24 h. The left and right hemisphere areas of the brains and the brain slices were analyzed and calculated by MedBrain 2 imaging analyzer to evaluate brain edema.</p><p><b>RESULT</b>The macrophotographic measurement showed that the ischemic hemisphere areas significantly increased from 1 h after focal cerebral ischmia, which was similar to the measurement of water content. This measurement for brain edema correlated well with those of water content and brain slice volume.</p><p><b>CONCLUSION</b>The macrophotographic measurement is an objective and quantitative method for evaluating brain edema after focal cerebral ischemia.</p>

An improved imaging analysis for quantitative measurement of brain slice volume / 浙江大学学报·医学版

<p><b>OBJECTIVE</b>To improve computer-assisted imaging analysis for quantitatively measuring brain slice volume of rats and mice in comparison with conventional measuring methods,and to evaluate its usefulness in assessment of focal cerebral ischemia.</p><p><b>METHODS</b>The accurate volumes of rat and mouse brain slices were measured by weight and special gravity measuring. The areas of brain slices were measured by imaging analysis, then the slice volumes of right and left hemispheres were calculated by multiplying the adjusted thickness of the slices. In addition, the brain slice volumes of right and left hemispheres from focal cerebral ischemic mice were compared to assess ischemic injury using the imaging analysis.</p><p><b>RESULT</b>Area measurement by computer-assisted imaging analysis was linear with different accurate areas (r=1.000). Slice volumes measured by imaging analysis correlated well with the accurate volumes measured by special gravity method, r=0.809 (n=45, P<0.001) in rats, and r=0.844 (n=74, P<0.001) in mice. The brain volumes in ischemic hemispheres were larger than in non-ischemic hemispheres in ischemic mice.</p><p><b>CONCLUSION</b>Computer-assisted imaging analysis can measure the brain slice volumes accurately and compare right and left hemisphere volumes quantitatively.</p>