Catecholamines ; blood ; Heart Rate ; Humans ; Water Sports ; physiology

Blood Chemical Analysis ; Humans ; Water Sports ; physiology

ObjectiveTo explore the value of color Doppler echocardiography in diagnosing apical hypertrophic cardiomyopathy( apical hypertrophic cardiomyopathy, AHCM). MethodsRetrospective analysis of 28 cases with apical hypertrophic cardiomyopathy by echocardiography images was carried out. Results28 cases AHCM patients,apical myocardial thickness 17 ～29mm,5 cases of simple apical myocardial thickening;10 cases of ventricular apex、left ventricular myocardial wall thickening in the apical segment;6 cases of ventricular apex、left ventricular myocardial thickening of apical segments of inferior;6 cases of Ventricular apex,left ventricular free wall thickening of apical myocardial; 1 case of ventricular apex、right ventricular free wall thickening of apical myocardial. All patients were diagnosed. ConclusionColor Doppler echocardiograph was an effective method for diagnosis of apical hypertrophic cardiomyopathy.

Objective To evaluate the influence of cytochrome P450 (CYP2C9 and CYP4F2) polymorphisms on anticoagulant intensity of warfarin after cardiac valve replacement.Methods A total of 136 patients tak ing warfarin after cardiac valve replacement were identified and classified into 4 groups:CYP2C9 wild type group (CYP2C9*1*1),CYP2C9 mutated type group (CYP2C9*3),CYP4F2 rs2108622 wild type group (CC) and CYP4F2 rs2108622 mutated type group (CT or TT).The patients' baseline data,initial dose of warfarin and base INR measurement resuhs were recorded and then the follow-up was conducted.The initial administration of warfarin to INR standard time for the first time,total amount of warfarin and the average daily amount were recorded.Results Patients carrying CYP2C9* 1* 1 had increased time to reach INR target value for the first time (P ＜ 0.05);and the total warfarin doses and average daily dose when INR reached target value were higher than those carrying CYP2C9*3 (P ＜ 0.05).When compared with those in two wild type groups,patients carrying CYP2C9 and CYP4F2 rs2108622 mutated type needed the shortest time when INR reached target value for the first time,and the total warfarin doses and average daily dose when INR first reached target value was the lowest,which showed significant difference (P ＜ 0.05).And when compared with CYP2C9 mutated type group,the INR average time to reach the first target was shortened and the total warfarin dose of patients carrying CYP2C9 and CYP4F2 rs2108622 mutated type was lower (P ＜ 0.05).Conclusion The gene polymorphisms of CYP2C9 and CYP4F2 are significant hereditary factors influencing warfarin dose.Detection of CYP2C9 and CYP4F2 genotypes prior to medication and predicating warfarin dosage may result in lower incidence of over-anticoagulation and reduce the dosage-adjusting time of warfarin.

Objective:To study the wound healing effects of the extracts of Shengji Huayu Fang with different solvents and demon-strate their important role in wound healing for deep second degree burn wound. Methods:Sixty Sprague-Dawley rats were randomly di-vidied into six groups(ten rats in each group): the control group (saline), the positive control group (asiaticoside group), Shengji Huayu Fang group respectively with petroleum ether, chloroform, ethyl acetate and n-butanol as the extraction solvent. The extracts of Shengji Huayu Fang with different solvents were applied in the rats with deep second degree burn wound, and the wound healing was e-valuated by the healing rate judged by naked eyes and computer image analysis, DNA cell cycle analysis using a flow cytometry, patho-logical reports and the degree of re-epithelialization studied by the other methods. Results:The mean healing time of the chloroform ex-tracts group [(15. 67 ± 1. 12)d] was much shorter than that of the control group [(22. 87 ± 1. 01)d, P<0. 01]. The hydroxyproline content and the percentage of S-phase cells in wound tissue in the chloroform extracts group was obviously higher than those in the con-trol group (P<0. 01). Conclusion:The present study indicates that topical application of chloroform extracts of Shengji Huayu Fang is beneficial to burn wound healing, and the chloroform extracts of Shengji Huayu Fang is the main bioactive fraction.

Objective To observe changes of the structure and function of microvessels during the formation and development of the rat cerebral glioma with steady-state susceptibility contrast-enhanced MR imaging. Methods A total of 30 bearing-tumor rats were divided into 3 groups (1-week group, 2-week group and 3-week group) and underwent MR examination. Blood volime (BV) and vessel size index (VSI_(MRI)) of peripheral tumor areas, central tumor areas and normal cerebral tissue in the opposite side were measured, and compared with histologic findings. Results With time of bearing-tumor increasing, BV of central tumor area present an up-and-down curve-like change, which related to the host blood vessel regression in tumor central area, the decreasing of blood vessel density and histopathologically obvious necrosis. BV of peripheral tumor areas increased because of active blood angiogenesis in this area, while VSI_(MRI) increased gradually, especially in the central tumor area. There was obviously correlation between the VSI_(MRI) and VSI _(histo) (P<0.01). Conclusion BV and VSI_(MRI) can exactly reflect the morphology and functional information of microcirculation of tumor during the growth and development of gliomas.

Objective To explore the of value steady-state susceptibility contrast-enhanced MRI (SSCE-MRI) in assessment of anti-angiogenesis therapy in rat C6 glioma. Methods Seventeen rats with the bearing-tumor were randomly divided into the therapy group (n=8) and the contrast group (n=9). Human-recombination endostatin (10 mg/kg) was injected to animals in therapy group, and saline of the same dose was injected to the contrast group for 7 days. Blood volume (BV) and vessel size index (VSI) were measured of tumors in peripheral, central and normal areas with MR pre- and post-therapy. Results After therapy of endostatin, the tumor volume was obviously different between therapy group and contrast group (t=5.26, P<0.05). BV and VSI_(MRI) of tumor decreased in both peripheral and central areas, particularly in the peripheral area (t=4.14, 3.66, all P<0.01). Conclusion Assessment of therapeutic effect of anti-angiogenesis in C6 glioma is feasible with SSCE-MRI, and it can reflect the changes of BV and VSI_(MRI) pre- and post-therapy.

OBJECTIVE To study the clinical usability of virtual endoscopy(VE) in tympanoplasty.METHODS A total of 102 patients (204 ears) were observed by virtual endoscopy. Tympanoplasty was performed in 72 cases (75 ears) including 53 cases (55 ears) with chronic otitis media and 19 cases (20 ears) with congenital microtia and middle ear dysmorphia. Ossicular chain reconstruction was conducteded in 65 ears at the same time. RESULTS The ossicular chain was showed eroded in 19 ears of 23 patients with cholesteatoma otitis media pre-operatively by VE, but was found eroded in all of 23 ears during operation. The ossicular chain was showed eroded in 29 ears of 32 patients with osteitis otitis media pre-operatively by VE, but during operation it was found 23 ears with malleus and incus eroded, 11 ears without head of stapes or up-structure of stapes. VE showed 18 ears with congenital microtia and middle ear malformation and 2 ears with small tympanic cavity and no ossicular chain preoperatively, and operation proved 17 ears with severe ossicular malformation, 2 ears without stapes, 1 ear with vestibular window atresia. There were 2 ears with sudden hearing loss after tympanoplasty, the VE showed ossicular displacement. The coincidence rates between VE and operation view were 92 % in patients with otitis media and 100 % in patients with congenital microtia and middle ear malformation. CONCLUSION VE can supply reliability data for evaluation of the damaged ossicular chain and efficacy of tympanoplasty.

Objective To observe the early clinical efficacy of PFC fixed platform and RP rotating platform prosthesis two kinds of artificial knee replacement system for the treatment of knee osteoarthritis.Methods 39 cases (39 knees)with knee osteoarthritis were treated with total knee arthroplasty(TKA).According to intraoperative use of different types of prosthesis,the cases were divided into two groups:fixed platforms group 16 cases and rotating platform group 23 cases.The wound healing,patients with gait and knee activity after operation were observed.Results Three cases took place postoperative deep vein thrombosis,after conservative treatment,the symptoms improved and discharged,two cases of postoperative wound fat liquefaction,by dressing wound healing,time stitches discharged.3 to 12 months follow-up visit(average 10 months),all patients could walk uptight without noticeable limp.Last follow-up group,fixed platforms,rotating platform group Knee Score (HSS) and knee activity (ROM) were (83.17 ± 7.12),(81.32 ± 5.39) points and (109.73 ± 6.35) °,(103.12 ± 4.28) °,compared with the preoperative differencewasstatisticallysignificant (AgroupHSS:t =22.10,ROM:t =9.21 ; BgroupHSS:t =30.69,ROM:t =9.54,all P ＜ 0.01),but the difference between groups was not statistically significant(HSS:t =0.88,ROM:t =3.63,all P ＞ 0.05).Conclusion Using PFC and RP prosthesis after total knee replacement system in early has a good effect,both of which improve joint function early with no significant difference,but long-term effects need further observation.