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Inheritance patterns of secondary symbionts during sexual reproduction of pea aphid biotypes

Insect Science 2014年第3期21卷 291-300页

作者： Jean Peccoud Joêl Bonhomme Frédérique mahéo Manon de la Huerta Olivier Cosson Jean-Christophe Simon INRA Institut de Génétique Environnement et Protection des Plantes (UMR IGEPP) Domaine de La Motte 35653 le Rheu cedex France

Herbivorous insects frequently harbor bacterial symbionts that affect their ecol- ogy and evolution. Aphids host the obligatory endosymbiont Buchnera, which is requiredfor reproduction, together with facultative symbionts whose frequencies vary across aphid populations. These maternally transmitted secondary symbionts have been particularlystudied in the pea aphid, Acyrthosiphon pisum, which harbors at least 8 distinct bacterial species （not counting Buchnera） having environmentally dependent effects on host *** particular, these symbiont species are associated with pea aphid populations feeding on specific plants. Although they are maternally inherited, these bacteria are occasionallytransferred across insect lineages. One mechanism of such nonmaternal transfer is paternal transmission to the progeny during sexual reproduction. To date, transmission of secondarysymbionts during sexual reproduction of aphids has been investigated in only a handful of aphid lineages and 3 symbiont species. To better characterize this process, we investigatedinheritance patterns of 7 symbiont species during sexual reproduction of pea aphids through a crossing experiment involving 49 clones belonging to 9 host-specialized biotypes, and117 crosses. Symbiont species in the progeny were detected with diagnostic qualitative PCR at the fundatrix stage hatching from eggs and in later parthenogenetic *** found no confirmed case of paternal transmission of symbionts to the progeny, and we observed that maternal transmission of a particular symbiont species （Serratia symbiotica）was quite inefficient. We discuss these observations in respect to the ecology of the pea aphid.

关键词： bacteria Homoptera paternal inheritance phytophagous insects symbiosis transmission failure

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John mah:商业地产需与国际接轨

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中国房地产业 2013年第7期 155-155页

作者： John mah 国际建筑业主与管理者协会房地产信托基金

商业地产开发与城市的发展紧密相关。城镇化将带来商业地产的繁荣。在这一过程中,商业地产应该寻找怎样的发展路径?若要分享城镇化成果,商业地产应首先明确项目所在地城镇化所处阶段,进而明确自身定位。在此基础上,加强复合型人才的培... 详细信息

商业地产开发与城市的发展紧密相关。城镇化将带来商业地产的繁荣。在这一过程中,商业地产应该寻找怎样的发展路径?若要分享城镇化成果,商业地产应首先明确项目所在地城镇化所处阶段,进而明确自身定位。在此基础上,加强复合型人才的培养和融资方式的创新。中国城镇化道路发展很快,在城市建设过程中,会发展大量的商业地产,建设不同的购物中心或者写字楼,但是在建设商业地产项目以及运营过程中需要

关键词：商业地产城镇化城市化 John mah 物业

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Trend Puer Tea： The Drinkable Collectible

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China International Business 2007年第3期 28-29页

作者： ANN mah

This increasingly popular brew is sought not just for its taste and healthful properties, but for its investment potential as well

关键词：普洱茶中国饮料茶文化

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UNDERDOGS WITH A BITE Hopeful Fans Gear Up For Euro 2016

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城市漫步（GBA版） 2016年第6期 46-47页

作者： mah HORN 不详

The 5000-1 success of English Premier League champions Leicester City last month made headlines around the *** message was:if Leicester can,anyone *** there is an added sense of excitement among football fans in the PRD this June as we prepare for the late nights and early mornings spent following the action from France in the Euro 2016 Championship.

关键词： football Premier League

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Cyclic Changes of Lymphatic Vessels in Human Endometrium

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Open Journal of Pathology 2014年第1期4卷 5-12页

作者： Tatsuo Tomita Kuni mah Departments of Integrative Biosciences Oregon Health & Science University Portland USA Department of Pathology Oregon Health & Science University Portland USA Oregon National Primate Center Oregon Health & Science University Portland USA Oregon National Primate Center Oregon Health & Science University Portland USA

Objective: The presence of lymphatic vessels in endometrium has been controversial and recent immunocytochemical studies with routinely paraffin embedded sections revealed lymphatic vessels in basalis and occasionally in functionalis. We aimed to investigate endometrial lymphatic vessels by immunocytochemical staining using cryosections, which provided better and consistent immunostaining for lymphatic vessels with a lymphatic marker, D2-40. We aimed further to explore the structure-function relationship of lymphatic vessels in the menstrual cycle. Materials and Methods: Sixteen cases of endometrium from menstrual, early-proliferative to latesecretary phase were immunostained for D2-40 and lymphatic vessels were morphometrically analyzed for functionalis, basalis and myometrium, respectively. Results: Lymphatic vessels were consistently most numerous in myometrium, followed by basalis in all phases whereas menstrual endometrium showed small, fragmented aggregates of lymphatic vessels in thin basalis. Earlyto mid-secretary endometrium revealed many lymphatic vessels in basalis and lower-functionalis with few lymphatic vessels in upper-functionalis. Late-secretary endometrium revealed more lymphatic vessels in upper-functionalis with dilated walls, which then burst at the surface of functionalis. Conclusions: These degenerating lymphatic vessels with markedly dilated lumen in upper-functionalis may contribute to lymphatic leakage in late-secretary phase. These immunostained lymphatic vessels in functionalis support proliferating and degenerating lymphatic vessel cycle synchronized with the menstrual cycle of endometrial arteries to maintain adequate fluid leakage.

关键词： Basalis D2-40 Human Endometrium Funtionalis Immunocytochemistry Lymphatic Vessels

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Cyclic Changes of Nerve Fibers in Human Endometrium

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Open Journal of Pathology 2014年第2期4卷 68-78页

作者： Tatsuo Tomita Kuni mah Department of Integrative Bioscience Oregon Health and Science University Portland OR USA Oregon National Primate Center Beaverton OR USA

Objective: The presence of nerve fibers in human endometrium remains unsettled but recent immunocytochemical studies have shown that there was increased innervation in the endometrium from women with endometriosis and some nerve fibers in the normally cycling human endometrium. In the current study, we used uterine tissue cryosections from normal cycling women, which previously provided better immunocytochemical staining for lymphatic vessels than in paraffin sections. Materials and Methods: A total of 16 cases from normally cycling women were included representing menstrual, early proliferative, early to late secretary phase. Neurofilament and CD 56 were used as immunocytochemical markers for nerve fibers with cryosections. Results: There were consistent presence of nerve fibers in myometrium and basalis. Few small nerve fibers were identified in early proliferative endometrium and more nerve fibers were present in lower-half functionalis from mid-secretary phase. Late-secretary functionalis showed less nerve fibers in the upper-half than the lower-half functionalis, implying growing nerve fibers from lower functionalis to upper functionalis in late-secretary phase. Conclusion: Nerve fibers appeared to cyclically grow from basalis to lower functionalis and then from lower functionalis to upper functionalis concomitantly with blood vessels in normally cycling human endometrium. These cycling endometrial nerve fibers consisted mostly of nonmyelinated small nerve fibers, which may transmit pelvic pain in the normally cycling women.

关键词： Basalis CD 56 Functionalis Human Endometrium Immunocytochemistry Nerve Neurofilament

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Characterizing a Populated Riparian Zone

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Open Journal of Ecology 2014年第10期4卷 601-611页

作者： Darrien Yau Seng mah Department of Civil Engineering Faculty of Engineering Universiti Malaysia Sarawak Kota Samarahan Sarawak Malaysia

Developments adjacent to river, over the years, have impacted the ecological systems along riparian zones. This paper is to explore the changes occurring in a populated riparian zone. For over 35 years, the nipah swamps along the study site at the edge of Kuching city, Sarawak, Malaysia are subjected to human disturbances. Once a nipah forest is dominated by Nypa fruticans, the study site is being replaced by Sonneratia caseolaris—a mangrove forest. Both plants are indigenous to Southeast Asia region. We observe in the study site that Nypa fruticans, habitually a dominant species, is weakened when human disturbances are high, and leads to event taken over by Sonneratia caseolaris. We point out that Sonneratia caseolaris behaves intrusively rather than neighborly in disturbed systems. Here, we suggest that the plant also has high resistance towards human disturbances. This is a growing behavior contradictory to reports of Sonneratia caseolaris in natural systems.

关键词： Mangrove Nipah Swamp Nypa fruticans Sonneratia caseolaris Urban River

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Cyclic Changes of Lymphatic and Venous Vessels in Human Endometrium

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Open Journal of Pathology 2014年第4期4卷 194-205页

作者： Tatsuo Tomita Kuni mah Departments of Integrative Biosciences Oregon Health and Science University Portland Oregon USA Departments of Pathology Oregon Health and Science University Portland Oregon USA Oregon National Primate Center Oregon Health and Science University Portland Oregon USA

Context: Cyclic changes of endometrial arteries are well established but possible cyclic changes of lymphatic and venous vessels have not been fully documented. There are no published morphological reports to support cyclic changes of endometrial lymphatic and venous vessels. Objective: Using cryosections of human endometrium, this study aimed to unveil possible cyclic changes of lymphatic and venous vessels. We previously reported cyclic changes of lymphatic vessels in human endometrium using D2-40. Design: A total of 16 cases representing menstrual, proliferative and mid and late secretary phase were studied. For Immunocytochemical staining, lymphatic vessel endothelial hyaluronan receptor 1 and von Willebr and factor were used for lymphatic and venous vessels, respectively. We used polyclonal LYVE-1 in this study, which revealed more lymphatic vessels than using D2-40. Results: Residual lymphatic and venous vessels were present in menstrual basalis. In Day 5 - 9 endometrium, there were sparse lymphatic vessels but were numerous growing venous vessels in thin proliferating functionalis. In Day 14 - 22 endometrium, there were scattered lymphatic vessels and numerous venous vessels in functionalis. In Day 25 - 26 endometrium, there were many dilated lymphatic vessels and numerous dilated, disintegrating venous vessels in upper functionalis than lower functionalis. Conclusion: The above findings support that lymphatic vessels are sparse but venous vessels are numerous in early proliferative functionalis. Lymphatic vessels grow from basalis to thin functionalis. In premenstrual phase, lymphatic vessels proliferate from lower to upper functionalis, and both lymphatic and venous vessels disintegrate for shedding by this immunocytochemical study using lymphatic and venous markers. Thus, all lymphatic, venous and arterial vessels undergo menstrual cyclic changes and shed for menstruation.

关键词： Factor-8 Human Endometrium Lymphatic Vessels LYVE-1 Venous Vessels

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Effect of different concentration of fish oil in skim milk-egg yolk extenders on post-thawed semen qualities of Kalang swamp buffalo bull

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Asian pacific Journal of Reproduction 2018年第3期7卷 139-142页

作者： Abdul Malik Jaelani A Neni Widaningsih Gt Khairun Ni'mah Raviani Sakiman Sasongko N Department of Animal Science Faculty of AgricultureIslamic University of KalimantanBanjarmasin-South KalimantanIndonesia Office of Animal Husbandry District of Banjar South Kalimantan ProvinceIndonesia Centre of Artifical Insemination BanjarbaruSouth Kalimantan ProvinceIndonesia

Objective:To explore the effect of fish oil at different concentrations on post-thawed semen of Kalang swamp ***: A total of 4 Kalang swamp buffalo bulls with 3-5 years of age and weighed about 340-360 kg were slected. Semen was regularly collected from these buffalo bulls once a week by an artificial vagina. Fish oil was supplementary at the dosages of 0 mg (control), 50 mg, 100 mg, 150 mg, and 200 mg to the extender (skim milk-egg yolk). Fresh, pre-freezing and frozen semen were thawed at 37℃ and evaluated for motility, viability, morphology, and plasma integrity of ***: The study results indicated that before freezing, supplementation of fish oil at the dose of 150 mg in the extender had significantly motility. And a significant (P<0.05) increase was observed in viability and motility of post-thawed semen at the dose of 150 mg fish oil, which was in difference with other treatment ***: Addition of 150 mg fish oil in the extender could be positive for the enhancement of the quality of post-thawed semen of Kalang swamp buffaloes.

关键词： Swamp buffalo Fish oil Semen cryopreservation Viability Plasma membrane integrity

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锥形束计算机断层扫描中牙齿的分割精度

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北京大学学报（医学版） 2010年第1期42卷 98-102页

作者：刘怡 James mah 许天民北京大学口腔医学院.口腔医院正畸科北京100081 Department of Orthodontics University of Southern California

目的:研究锥形束计算机断层扫描(cone beam computerized tomography,CBCT)影像中分割提取正常牙齿体积的精度。方法:选择10例正畸减数病例拔除的双尖牙24颗,采用排水法物理测量其体积(volume of water,Vw),其中7例(16颗牙齿)在减数前采... 详细信息

目的:研究锥形束计算机断层扫描(cone beam computerized tomography,CBCT)影像中分割提取正常牙齿体积的精度。方法:选择10例正畸减数病例拔除的双尖牙24颗,采用排水法物理测量其体积(volume of water,Vw),其中7例(16颗牙齿)在减数前采用i-CAT进行三维扫描,3例(8颗牙齿)使用CB MercuRay。使用Amira4.0软件在CBCT影像中分割提取减数双尖牙并测量其体积(volume in amira,Va)。所有的测量均由两名操作者测量两次。采用配对t检验对Vw与Va进行统计学分析,用Pearson相关分析及组内相关系数确定组内及组间的相关性。结果:样本总体平均Vw为(0.553±0.082)cm3,平均Va为(0.548±0.079)cm3[操作者1为(0.529±0.078)cm3,操作者2为(0.567±0.085)cm3],Va与Vw之间差异有统计意义(P<0.05),Va的测量在两个操作者之间差异也有统计学意义(P<0.05),组内与组间相关系数高。Amira软件中表面光滑处理的过程可以损失3%～12%的体积。结论:利用CBCT分割提取双尖牙根是可行的,但分割提取的体积与正常相比有小范围的差异(本研究为-4%～7%),表面处理功能中虽然能美化视觉效果,但有体积的丢失。

关键词：锥形束CT 图像处理计算机辅助牙根正畸学

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