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Only mothers feed mature offspring in European Ceratina bees

Insect Science 2021年第5期28卷 1468-1481页

作者： Michael Mikat Jitka Waldhauserova Tereza frankova Katerina Cermakova Vojtech Broz Simon zeman Marcela Dokulilova Jakub Straka Department of zoology Faculty of ScienceCharles UniversityPragueCzech Republic Jihlava Grammar School JihlavaCzech Republic Department of Ecology Faculty of ScienceCharles UniversityPragueCzech Republic

Parental care directed to adult offspring is uncommon in *** parental care has been documented in Xylocopinae bees(Hymenoptera:Apidae).Moreover,some Ceratina bees(Xylocopinae)are known to feed mature siblings,and feeding of mature siblings is achieved by dwarf eldest daughters when mothers *** daughters are intentionally malnourished by mothers and usually originate from the first brood ***,we examined the pattern of care prov ided to young adults in three small European carpenter bees:Ceratina(Ceratina)cucurbitina,C.(Euceratina)chalybea,and C.(E.)*** of nest departures and arrivals were performed to study foraging *** detected intensive foraging behavior of mothers in all three studied ***,we did not observe regular foraging bchavior of daughters in any *** experimental removal of mothers in *** led to the emigration of young adults and did not initiate foraging activity in *** conclude that the feeding of siblings does not occur in these species unlike in the American species *** detected female-biased sex ratios in the first brood cell in *** and *** offspring in the first brood cell was smaller than other female offspring only in *** results show that a female-biased sex ratio and the small size of daughters in the first brood cell do not provide sufficient ev idence for demonstrating the existence of an altruistic daughter and also that the pattern of maternal investment is not exclusively shaped by social interactions.

关键词： foraging trip Hymenoptera maternal care provisioning sociality Xylocopinae

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An In Vitro Model of Perineural Invasion of Adenoid Cystic Carcinoma

An In Vitro Model of Perineural Invasion of Adenoid Cystic C...

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第八次全国口腔颌面—头颈肿瘤会议

作者： Shao z Shang zJ (Department of Oral and Maxillofacial Surgery,School and Hospital of Stomatology,Wuhan University,Wuhan,PR China)

Background & Objectives:Preineural invasion is the major mechanism of adenoid cystic carcinoma(ACC) spread outside the salivary *** is understood regarding mechanisms of perineural invasion in *** present an in vitro model to observe the interaction between nerves and ACC ***:Mouse dorsal root ganglia(DRG) and human ACC-M cell lines were co-cultured in Matrigel *** cultures consisted ACC cells only and DRG *** outgrowth,cell colony growth,neurite-cell contact,and retrograde extension were quantitated with dark phase microscopy.A modified MTT assay and Transwell assays were performed to determine the proliferation and migration alteration of ACC cells using the conditioned media from perineural invasion model. Results:Directional outgrowth of neurites was observed projecting into ACC-M colonies within 72 hr of *** the contact was established neurite growth diminished,suggesting an active attraction between neutrie and ACC ***,ACC cells migrated along neurites in a retrograde fashion into nerve establishing perineural *** addition to perineural invasion,ACC-M colony growth was elevated in regions near the DRG rclative to regions fra away from the DRG in *** conditioned media from perineural invasion model could induce the ACC cells survival and ***:This study shows the in vitro model of perineural invasion of adenoid cystic *** model can be used to study specific mechanism of ACC cell-nerve interaction. These data suggest that the process of perineural invasion involve active and reciprocal interactions between ACC cells and nerves and ACC cells acquire a survival and migration advantage by contact with neuritis.

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DOG1在胃肠道间质肿瘤鉴别诊断中的应用

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临床与实验病理学杂志 2009年第6期25卷 668-668页

作者： Miettinen M Wang z F Lasota J. 郎志强(摘译) 不详烟台毓璜项医院病理科烟台264000

胃肠道间质肿瘤（GIST）是发生于胃肠道及腹部的间叶性肿瘤，需要明确诊断以便于患者进行酪氨酸激酶抑制剂药物治疗。目前的检测手段主要是KIT免疫组化及KIT／PDG—fra基因突变分析，存在一定的局限性，如部分GIST缺乏KIT的表达和突变... 详细信息

胃肠道间质肿瘤（GIST）是发生于胃肠道及腹部的间叶性肿瘤，需要明确诊断以便于患者进行酪氨酸激酶抑制剂药物治疗。目前的检测手段主要是KIT免疫组化及KIT／PDG—fra基因突变分析，存在一定的局限性，如部分GIST缺乏KIT的表达和突变，也存在假阳性结果。近来有研究发现DOGI的某些单克隆或多克隆抗体可用于标记GIST，与KIT／PDGfra基因突变状态无关，但克隆号K9的单克隆抗体尚未进行评测，

关键词：胃肠道间质肿瘤鉴别诊断基因突变分析酪氨酸激酶抑制剂多克隆抗体单克隆抗体 GIST 间叶性肿瘤

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