Effects of Hemin on cognitive function and the expression of neuroglobin in rats with vascular de-mentia / 中华行为医学与脑科学杂志

Objective To observe the influence of Hemin on both the expression of neuroglobin (Ngb) and Tau protein phosphorylation in rats with vascular dementia (VD),and explore the effect and mechanism of Ngb in VD. Methods VD model was established in rats with a permanent bilateral common carotid arteries occlusion(2-VO). Fifty four healthy male SD rats were randomly divided into 3 groups:sham operation group,VD group and Hemin group. According to ischemic time,the animals in each group were randomly allocated into 1 week subgroup,4 weeks subgroup and 8 weeks subgroup(n=6 in each subgroup). The learning and memory ability of rats were evaluated by Morris water maze test. The brain histopathological changes were observed by HE staining and the expression of Ngb and phosphorylated Tau ( p-Tau) was de-termined by Western blot. Results Compared with the sham operation group,after 2-VO the escape latency extended (all P<0. 05) and cross-platform performance reduced in rats in both VD group and Hemin group (all P<0. 05). The learning and memory ability of rats in Hemin group was better than that in VD group at the corresponding time point:the increase in the number of crossing platforms(1 week:Hemin group (7. 00± 0. 89) times vs VD group (5. 50±1. 22) times,t=2. 42,P<0. 05;4 weeks:Hemin group (5. 33±0. 52) times vs VD group (3. 50±1. 04) times,t=3. 84,P<0. 01;8 weeks:Hemin group (6. 50±0. 55) times vs VD group (4. 50±1. 05) times,t=4. 14,P<0. 01). The expression of Ngb and phosphorylated Tau (p-Tau) increased in VD group and Hemin group (P<0. 01). Compared with VD group,the expression of Ngb in Hemin group was increased(1 week:Hemin group (3. 45±0. 23) vs VD group (2. 56±0. 08),t=5. 67,P<0. 01;4 weeks:Hemin group (3. 08±0. 13) vs VD group (2. 28±0. 08),t=7. 96,P<0. 01;8 weeks:Hemin group (2. 82± 0. 12) vs VD group (2. 05±0. 10),t=7. 28,P<0. 01),while p-Tau was decreased (1 week:Hemin group (1. 57±0. 12) vs VD group (2. 40±0. 15),t=7. 62,P<0. 01;4 weeks:Hemin group ( 2. 14±0. 21) vs VD group (3. 18±0. 14),t=8. 23,P<0. 01;8 weeks:Hemin group (1. 83±0. 13) vs VD group (2. 79±0. 19), t=4. 91,P<0. 01). In VD group and Hemin group,the learning and memory ability exhibited a negative cor-relation with Ngb (r=-0. 892,P<0. 01),whereas a positive correlation with p-Tau (r=0. 932,P<0. 01). Conclusion Hemin induces high expression of Ngb and inhibits Tau phosphorylation in VD rats. Ngb may play a neuroprotective role in the development of VD by regulating Tau phosphorylation.

Treatment outcome of patients with idiopathic sudden sensorineural hearing loss and concomitant benign paroxysmal positional vertigo / 临床耳鼻咽喉头颈外科杂志

OBJECTIVE@#To evaluate the treatment outcome of patients with idiopathic sudden sensorineural hearing loss (ISSHL) with concomitant benign paroxysmal positional vertigo (BPPV).@*METHOD@#Out of 252 ISSHL patients, 96 patients were diagnosed with complicating vertigo and examined using electronystagmography. All patients were divided into three groups, namely, ISSHL without vertigo group (n=156), ISSHL with non-BPPV vertigo group (n=70) and ISSHL with BPPV group (n=26). All patients received daily intravenous infusion of 200,000 U urokinase for 3 consecutive days and 100,000 U for 3 additional days. Concomitant medications included intravenous Ginkgo biloba leave compound and vitamin B6 and intramuscular vitamins B1 and B12 for 2 weeks. Twenty-six patients diagnosed with BPPV on electronystagmography positioning test also received canalith repositioning maneuver.@*RESULT@#Vertigo-associated symptoms completely resolved after canalith repositioning maneuver in ISSHL patients with complicating BPPV. With respect to post-treatment hearing, ISSHL patients without vertigo exhibited a similar improvement as compared to those with BPPV, while those with non-BPPV vertigo had a significantly less improvement than those without vertigo and with BPPV.@*CONCLUSION@#ISSHL patients with complicating BPPV exhibit a relatively favorable outcome with respect to hearing and vertigo-associated symptoms after medical and repositioning treatment.

A clinical research of endoscopic myringoplasty with modified sandwich technique / 临床耳鼻咽喉头颈外科杂志

OBJECTIVE@#To explore the curative effect of endoscopic myringoplasty with modified sandwich technique.@*METHOD@#Endoscopic myringoplasty was performed with modified sandwich technique for traumatic perforation of tympanic membrane and chronic suppurative otitis media (simple type) of 43 patients.@*RESULT@#All the perforating tympanic membranes were repaired successfully in one time. Six months after the operation, 1 case was out of follow-up and 2 cases were failed: one got a small perforation when the transplantation shifted and the transplantation of the other one was lost because of infection. The closure rate of tympanic membrane perforations was 95.2%. The air-bone gap of speech frequency of 28 ears increased by > 15-20 dB, 8 ears were enhanced by 10-15 dB, while 6 ears (including 2 failed cases) without improvement. The acoustic immittance test showed that "Type A", "Type As", "Type Ad", "Type B" and "Type C" tympanogram were in 30 ears,12, 4, 6 and 4, respectively.@*CONCLUSION@#The endoscopic myringoplasty with modified sandwich technique has the advantages of simple operation, better security, less trauma and better efficacy, and it is worth popularizing.

Contrast-enhanced ultrasound evaluation of efficacy of argon-helium cryoablation in the treatment of liver malignancies / 中国介入影像与治疗学

Objective To observe the value of contrast-enhanced ultrasound (CEUS) in the evaluation of efficacy of Argon-Helium cryoablation therapy for liver malignancies.Methods A total of 27 patients with 27 lesions of liver malignancies underwent ultrasound-guided Argon-Helium cryoablation therapy.CEUS was used to evaluate the local response and compared with contrast-enhanced CT (CECT).Results One month after Argon-Helium cryoablation therapy,21 lesions (77.78%) were diagnosed as complete ablation with CEUS and 22 (81.48%) with CECT.Contrast enhancement within lesions was demonstrated in 6 lesions (22.22%) with CEUS and 5 (18.52%) with CECT.As compared to CECT,the sensitivity,specificity,positive and negative predictive value,and accuracy of CEUS in diagnosing tumor residue 1 month after treatment was 80.00% (4/5),90.91% (20/22),66.67% (4/6),95.24% (20/21),and 88.89% (24/27) .respectively.Conclusion CEUS is an effective alternative for the evaluation of efficacy of Argon-Helium cryoablation in the treatment of liver malignancies.

Ultrasound-guided minimally invasive targeted Argon-Helium cryoablation in the treatment of hepatic carcinoma / 中国微创外科杂志

Objective To explore the effectiveness of minimally invasive targeted Argon-Helium cryoablation in the treatment of hepatic carcinoma. Methods Ultrasound-guided Argon-Helium targeted cryoablation using the Cryo-Hit system was performed percutaneously or through laparotomy in 27 cases of hepatic neoplasms, including 10 cases of primary hepatic carcinoma, 11 cases of recurrent hepatic carcinoma, and 6 cases of metastatic carcinoma. Results No surgical death was found. There were no complications such as hepatic rupture, hemorrhage, or bile leakage. In 12 cases that had an increased AFP levels before the treatment (36.5~1200 ?g/L), a decrease was observed (8.0~254 ?g/L) and a recovery below the normal levels was noted in 6 cases. In 3 cases that had an increased CEA levels before the treatment, the levels reduced after the treatment and went down to the normal ranges in 2 cases. A follow-up survey was carried out for 1~3 months. CT scannings or MRI examinations found a complete tumor necrosis in 59.2% (16/27) of cases and a reduction of tumor size with various degrees in 25.9% (7/27) of patients. Conclusions Ultrasound-guided targeted Argon-Helium cryoablation using the fine-probe Cryo-Hit system is a safe, effective, and simple procedure for the treatment of hepatic carcinoma, although its effectiveness still needs further verification.