Serologic Evidence of Pandemic Influenza Virus H1N1 2009 Infection in Cats in China

Infection of domestic cats with (H1N1) pandemic 2009 (pdm09) influenza A virus has recently been documented. In this paper, we report for the first time the sporadically current seroprevalence of (H1N1) pdm09 influenza A virus infection in cats in China. Thirteen of 1,080 sera were found positive by nucleoprotein (NP)-specific enzyme-linked immunosorbent assays (ELISAs) in different cat populations in southern China. It is very important to stress further surveillance of pandemic (H1N1) 2009 influenza A virus in cats in southern China.     

奇静脉的临床应用解剖

目的 观测奇静脉的解剖学结构,丰富奇静脉临床应用形态学数据.方法 解剖30具经福尔马林固定的尸体标本,观测奇静脉的起始、走行、外形、属支、管径、与胸导管位置关系.结果 奇静脉的位置与走行可分为三种类型.奇静脉主干长度与管径值:长度(18.45 ±2.95) cm,起端管径(0.46 ±0.12) cm,中段管径为(0.90 ±0.20) cm,末端管径为(1.24±.0.30) cm.中段凸向前正中线左侧16例,占53.33％,凸出度均值0.53 cm.半奇静脉与副半奇静脉、奇静脉与胸导管的位置关系等较为复杂.结论 奇静脉起始部位、长度、管径、位置走行差异较大,整体走行与属支存在多种类型,与胸导管的位置关系多变,临床上应予以充分注意.     

Do Implant Length and Width Matter for Short Dental Implants (<10 mm)? A Meta‐Analysis of Prospective Studies

Background: This meta‐analysis of prospective clinical trials was conducted to determine the effects of dental implant length and width on implant survival rate of short (<10 mm) implants. Methods: An electronic search of the PubMed database for relevant studies published in English from November 1998 to March 2012 was performed. Selected studies were randomized clinical trials, human clinical trials, or prospective trials with a clear aim of investigating the success or survival rate of short (<10 mm) implants. Results: Eight studies fulfilled the inclusion criteria and were subsequently analyzed. A total of 525 short (<10 mm) dental implants were analyzed, of which 253 were 3.5 mm in diameter (48.19%), 151 were 4.0 mm (28.76%), 90 were 4.1 mm (17.14%), 21 were 4.8 mm (4%), and 10 were 5.1 mm (1.9%). All implants included in this meta‐analysis had a follow‐up period of 12 to 72 months. The included studies reported on the survival rate and diameter of the implants. Six of the studies used “short implants” (7 to 9 mm), and the remaining were classified as “extra‐short implants” (≤6 mm). Five‐year estimated failure rates were 1.61% and 2.92%, respectively, for extra‐short and short implants (z = ?3.49, P <0.001, 95% confidence interval = 0.51% to 4.10%). Furthermore, it was found that the wider the implant, the higher the failure rate (estimated failure rate = 2.36%, 95% confidence interval = 1.07% to 5.23%). Conclusions: Neither implant length nor width seemed to significantly affect the survival rate of short implants (<10 mm). Nonetheless, further well‐designed randomized clinical trials are needed to confirm these findings.     

构建一种新型牙周膜牙囊复合细胞膜片的研究

目的：拟构建一种牙周膜牙囊复合细胞膜片,并比较其与单一膜片的性能差异,以期寻找一种更加优越的牙周缺损修复材料。方法：将第三代牙周膜干细胞及牙囊干细胞直接混合共同培养,将牙周膜牙囊混合细胞、牙周膜干细胞及牙囊干细胞分别制备成细胞膜片,应用HE染色,扫描电镜比较三种膜片形态学差异,应用茜素红染色,RT—PCR比较三种膜片成骨能力差异。结果：扫描电镜结果显示,牙囊牙周膜混合细胞膜片分泌更多的细胞外基质。HE染色结果也显示牙囊牙周膜混合细胞膜片细胞层数更多,基质分泌量更大。同时,牙囊牙周膜混合细胞膜片AIJP、Runx2、OCN表达显著高于单一细胞膜片。成骨诱导21天后,茜素红染色结果显示,与单一细胞膜片相比,牙囊牙周膜混合细胞膜片染色更深。结论：牙周膜牙囊复合细胞膜片较单一细胞膜片,细胞层数更多,基质分泌量更大,骨向分化能力更强,为牙周再生提供了新的思路。     

牙周内窥镜下刮治与传统刮治对龈下牙石清除效果的比较

目的比较内窥镜下龈下刮治与传统龈下刮治清除龈下牙石的效果。方法收集16例患者26颗无保留价值的重度慢性牙周炎患牙,随机分为两组,每组8例13颗患牙,分别行牙周内窥镜下龈下刮治(A组)及传统龈下刮治(B组),每颗患牙均刮治10min后拔除,亚甲基蓝染色后,蓝色显示残留牙石,对每颗牙颊、舌、近中及远中面拍照并用Image Pro Plus图像分析软件检测、计算各牙面的牙石残留率。比较两组患牙治疗后的牙石残留率以及吸烟、牙周探诊出血位点数和牙周探诊深度对牙石清除效果的影响。结果 A组患牙平均牙石残留率为(8.34±1.70)%,B组患牙平均牙石残留率为(13.02±3.36)%,差异有统计学意义(P<0.05)。吸烟、探诊出血位点数、牙周探诊深度对治疗后的牙石残留率均有影响(P<0.05)。结论在牙周内窥镜下行龈下刮治,清除牙石的效果明显优于传统龈下刮治。吸烟、探诊出血、探诊深度对牙石残留率均有影响。     

Associations of adiponectin gene polymorphisms with polycystic ovary syndrome: a meta-analysis

Adiponectin gene polymorphisms have been implicated in polycystic ovary syndrome (PCOS) development. However, results from previous studies were inconsistent and inconclusive. To shed some light on the relationship of two adiponectin gene polymorphisms, T45G and G276T, with PCOS, we conducted the current meta-analysis. PubMed was used for searching all eligible studies up to September 30, 2011. Odds ratio (OR) with the corresponding 95% confidence interval (CI) was adopted to evaluate the strength of the associations. In total, ten case-control studies involving 2,821 participants were included in the meta-analysis. Results showed that the T45G polymorphism was not associated with PCOS for allelic contrast (OR?=?1.10, 95%CI: 0.83-1.44, P?=?0.514), with evidence of large heterogeneity (P (heterogeneity)?=?0.002). Concerning G276T polymorphism, the results showed that the T allele was related to a reduced risk of PCOS compared with the G allele under allelic genetic model (OR?=?0.81, 95%CI: 0.70-0.93, P?=?0.003), and no significant heterogeneity (P (heterogeneity)?=?0.268) was revealed. Similar results were observed under additive, dominant and recessive genetic models for both of these two polymorphisms. No publication bias was detected. Our results suggested that the T45G polymorphism of adiponectin gene was not significantly associated with PCOS, while the G276T polymorphism was related to a decreased risk of PCOS.