TIL细胞联合IL-2瘤内注射对荷瘤小鼠作用的观察

目的用TILIL－2对荷瘤小鼠进行瘤体内注射，使肿瘤生长受到抑制。方法将荷瘤小鼠分为两组，腹腔注射组和瘤内注射组，每鼠给药量TIL0.5×107＋IL－2500U／次，每隔3～4天注射一次，共6次。测量肿瘤大小，病理切片进行分析。结果瘤内注射者肿瘤生长明显受到抑制，在病理切片中可见肿瘤周围组织中有大量淋巴细胞浸润而全身给药者治疗结果不及前者。结论瘤体内给药提高了肿瘤局部的免疫力，同时可以合理的安排杀伤细胞到达肿瘤部位的有效浓度，从而抑制了肿瘤细胞的增殖，也避免了全身用药所产生的毒副作用，是一种很有潜力的治疗手段。     

Delayed remote preconditioning induces cardioprotection: role of heme oxygenase-1

Background

The role of heme oxygenase-1 (HO-1) in the cardioprotection induced by delayed remote ischemic preconditioning (DRIPC) has not been investigated. Therefore, this study was designed to investigate whether HO-1 is involved in DRIPC-mediated cardioprotection in an isolated perfused rat heart model.

Materials and methods

Isolated rat hearts were subjected to 30 min ischemia followed by 60 min reperfusion. DRIPC (four cycles 5-min occlusion and 5-min reflow at the unilateral hind limb once per day for 1, 2, or 3 d before heart isolation, abbreviated as D1RIPC, D2RIPC, or D3RIPC respectively). Infarct size, myocardial troponin levels, and heart function were measured. The protein and messenger RNA levels of HO-1 were determined.

Results

DRIPC facilitated postischemic cardiac functional recovery and decreased cardiac enzyme release. The infarct size-limiting effect of DRIPC was more pronounced in the D3RIPC group (10.22 ± 2.57%) than the D1RIPC group (22.34 ± 4.02%, P < 0.001) or the D2RIPC group (14.60 ± 3.13%, P = 0.034). These effects in the D1RIPC group could be blocked by Zinc Protoporphyrin IX (ZnPP) (an HO-1 specific inhibitor). DRIPC-mediated cardioprotection was associated with enhanced HO-1 protein expression (D1RIPC, 0.11 ± 0.03; versus 0.15 ± 0.06 in the D2RIPC group, P = 0.06; versus 0.20 ± 0.04 in the D3RIPC group, P = 0.04) and messenger RNA levels of HO-1 expression.

Conclusions

Our findings suggest that HO-1 is involved in the cardioprotection induced by DRIPC, and that increase in the number of preconditioning stimuli may enhance cardioprotective effects accompanied with increased HO-1 level.     

Green tea polyphenols protect spinal cord neurons against hydrogen peroxide-induced oxidative stress

Green tea polyphenols are strong antioxidants and can reduce free radical damage. To investigate their neuroprotective potential, we induced oxidative damage in spinal cord neurons using hydrogen peroxide, and applied different concentrations(50–200 μg/mL) of green tea polyphenol to the cell medium for 24 hours. Measurements of superoxide dismutase activity, malondialdehyde content, and expression of apoptosis-related genes and proteins revealed that green tea polyphenol effectively alleviated oxidative stress. Our results indicate that green tea polyphenols play a protective role in spinal cord neurons under oxidative stress.     

Development of 39 novel polymorphic microsatellite markers for the giant mottled eel Anguilla marmorata and cross-amplification in other eel species

In this study, we have developed microsatellite markers for the giant mottled eel (Anguilla marmorata) from expressed sequence tag (EST) sequences using next-generation sequencing. Consequently, a total of 39 novel polymorphic microsatellite markers were identified in 32 individuals from Wangquan River wild population area. The range of observed heterozygosity, expected heterozygosity and polymorphism information content were 0.044–1.000, 0.285–0.946 and 0.3783–0.9016, respectively. In addition, eight loci were deviated from Hardy–Weinberg equilibrium and modified by Bonferroni correction, and the results showed no significant linkage disequilibrium between the locus pair. The amplification of cross-species was conducted in Anguilla bicolor pacifica and Anguilla japonica, which revealed the applicability of EST-SSR primers. These EST-SSR markers can provide sufficient polymorphism for population genetic studies, pedigree and genome mapping of these three kinds of closely related eels.     

Structure–function relationship between Bruch’s membrane opening-minimum rim width and perimetry in open-angle glaucoma subtypes

Graefe's Archive for Clinical and Experimental Ophthalmology - To seek the threshold value of Bruch’s membrane opening-minimum rim width (BMO-MRW) where visual field (VF) damage occurs in...     

Increased rate of ptosis following glaucoma drainage device placement and other anterior segment surgery: a prospective analysis

Graefe's Archive for Clinical and Experimental Ophthalmology - To determine the degree&nbsp;and rate of ptosis in patients undergoing glaucoma and cataract surgery. Patients undergoing...