pcDNA3.1/hIL-18真核表达载体的构建及表达

目的 :构建重组真核表达质粒pcDNA3.1/IL 18,并在哺乳动物细胞COS 7和Rlc310中进行瞬时和稳定性表达。方法 :从含hIL 18基因的中介载体 pGEM TEasy( pGEM T/hIL 18)中 ,以限制性内切酶酶切方法获得目的片段 ,克隆入真核表达质粒 pcDNA3.1( )中。以脂质体法转染COS 7和Rlc310细胞 ,用RT PCR检测IL 18mRNA的水平 ,免疫组化染色法检测蛋白表达。结果 :构建了hIL 18基因的重组真核表达质粒pcDNA3.1/IL 18,并可在哺乳动物细胞中瞬时、稳定表达 ,获得了可稳定表达hIL 18基因的Rlc310细胞株。结论 :pcDNA3.1/IL 18的构建及表达 ,为IL 18抗肿瘤作用的研究奠定了基础     

一种简易的链球菌脱氧核糖核酸酶B提取法

Ａ群乙型溶血性链球菌感染通常认为与急性风湿热和急性肾小球肾炎有关。链球菌感染人体后,可释放多种胞外酶,脱氧核糖核酸酶Ｂ是链球菌分泌的核酸酶Ａ、Ｂ、Ｃ、Ｄ中最重要的一种,可作为实验室诊断链球菌感染的有用指标,如与抗链球菌溶血素“Ｏ”同时测定,则可有效提高链球菌感染的检出率［１］。本文介绍了一种简便易行的链球菌核酸酶Ｂ提取法,所得抗原可用于其抗体测定。１　材料与方法１１　细菌培养和核酸酶Ｂ的提取　选取Ａ群乙型溶血性链球菌菌株接种于羊血ＴｏｄｄＨｅｗｉｔｔ肉汤,３７℃培养６ｈ后转种ＴｏｄｄＨｗ…     

Rhabdoid tumor predisposition syndrome with renal tumor 10 years after brain tumor

We report a case of rhabdoid tumor predisposition syndrome with a renal tumor developing 10 years after a brain tumor, which demonstrated an unexpectedly favorable outcome. A 2-year-old boy underwent gross total resection of a brain tumor located in the fourth ventricle, and received adjuvant chemotherapy and radiotherapy. At the age of 11 years, a renal tumor was found and nephrectomy was performed. He is currently alive without evidence of disease over 2 years without postoperative therapy. Histologically, rhabdoid cells were observed in both brain and renal tumors. Loss of SMARCB1 (also known as INI1) expression was found in the nucleus of both tumor cells. Genetic testing revealed pathogenic variants of SMARCB1 exon 5 in the renal tumor and SMARCB1 exon 9 in the brain tumor. In addition, heterozygous deletion of 22q11.21-q11.23 containing the SMARCB1 locus was shared by both tumors and this deletion was identified in normal peripheral blood. Considering the histopathological and genetic findings, our case was considered to be rhabdoid tumor predisposition syndrome with atypical teratoid/rhabdoid tumor and late-onset rhabdoid tumor of the kidney.     

Quality of life in elderly patients with localized breast cancer treated with radiotherapy. A prospective study

PurposeThere is a debate on the role of adjuvant Radiotherapy (RT) in elderly breast cancer patients.The aim is to study Quality of Life (QL) throughout the treatment and follow-up periods in early stages breast cancer patients who have started radiotherapy, and to compare the QL of axillary surgery groups.Methods173 patients, ≥65 years completed the EORTC QLQ-C30 and QLQ-BR23, and the Interview for Deterioration in Daily Living Activities in Dementia(IDDD) questionnaires three times throughout treatment and follow-up periods. Linear mixed effect models were used to evaluate longitudinal changes in QL, and whether these changes differed among axillary surgery groups.ResultsQL scores were high (>70/100 points) in most QL areas, with moderate limitations (>30) in sexual functioning and enjoyment, future perspective and global QL.In six areas there was a decline at the RT sessions end, that after 6 weeks was recovered. For three areas, there was an improvement in the follow-up measurement compared to the previous assessments. Changes in seven areas were <5 points.Axillary node dissection patients had a body image decrease (6 points) in the follow up period. The lymphadenectomy group had more fatigue (10 points, p = 0.078) than the other two axillary surgery groups.ConclusionsResults orientate towards good patients' adaptation to their disease and treatments, and to administering RT in early stages breast cancer patients. QL differences between the axillary surgery groups and in their evolutions were few but have appeared in key QL areas.     

Single stage immediate breast reconstruction with acellular dermal matrix and implant: Defining the risks and outcomes of post-mastectomy radiotherapy

IntroductionThe objective of this study is to evaluate outcomes and complications in patients with single-stage ADM-implant based immediate breast reconstruction with and without radiotherapy (RT), highlighting the effects of RT on the reconstruction.Materials and methodsThis prospective study recruited 91 consecutive patients who underwent skin-sparing, nipple-sparing or wise-pattern skin reduction mastectomy with direct-to-implant breast reconstruction with ADMs using sub-pectoral or pre-pectoral approach at the two breast units. Early and late complications like seroma, delayed wound healing, wound breakdown, infection, capsular contracture, implant loss and revision surgery were evaluated in the RT and non-RT groups.ResultsIn the total cohort of 91 patients, 29 received adjuvant RT and 62 did not need RT. In the RT group, 3–7% of them had early complications like seroma, wound infections and delayed healing. 20.7% had post-RT capsular contractures which either required revision surgery with autologous flap (6.9%) or capsulotomy with exchange of implant (6.9%). In the non-RT group, 7–9% cases had seroma & wound infections, 3.06% had delayed wound healing and 7.25% had capsular contracture. 13.04% required revision surgery due to infection, implant loss or failure to achieve expectations. The total loss of implants in the cohort was 7.14% (RT group 6.9% and non-RT group 7.25%). The need for PMRT could have been predicted pre-operatively in the RT group in 55.17% cases based on the extent of disease, multifocality, tumour grade and positive LN status on imaging.ConclusionADM based reconstruction in patients anticipated to receive adjuvant RT is always debatable. Though there is no significant difference in the revision surgeries in our study of the 2 groups, the rate of capsular contracture as expected, was higher in the RT group. Hence, pre-operative discussion on the need for RT highlighting the risks and complications will help patients make a better-informed choice.