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1.
ObjectivesThe aim of this study was to determine the association of “ABO” and “Rhesus” blood groups with incidence of breast cancer.MethodsIn this study, we identified 70 research documents from data based search engines including “PubMed”, “ISI-Web of Knowledge”, “Embase” and “Google Scholar”. The research papers were selected by using the primary key-terms including “ABO blood type”, “Rhesus” blood type and “breast cancer”. The research documents in which “ABO” and “Rhesus” blood types and breast cancer was debated were included. After screening, we reviewed 32 papers and finally we selected 25 research papers which met the inclusion criteria and remaining documents were excluded.ResultsBlood group “A” has high incidence of breast cancer (45.88%), blood group “O” has (31.69%); “B” (16.16%) and blood group “AB” has (6.27%) incidence of breast cancer. Blood group “A” has highest and blood group “AB” has least association with breast cancer. Furthermore, “Rhesus +ve” blood group has high incidence of breast cancer (88.31%) and “Rhesus –ve” blood group has least association with breast cancer (11.68%).ConclusionBlood group “A” and “Rhesus +ve” have high risk of breast cancer, while blood type “AB” and “Rhesus –ve” are at low peril of breast cancer. Physicians should carefully monitor the females with blood group “A” and “Rh +ve” as these females are more prone to develop breast cancer. To reduce breast cancer incidence and its burden, preventive and screening programs for breast cancer especially in young women are highly recommended.  相似文献   

2.
Since the end of the Kosovo War in 1999 and the “liberation” of the territory from Serbian forces, narratives about the “freedom struggle” have been crafted and defended both in Kosovo and abroad. The transmission of these memories forms part of a broader effort to create a “national” history of Kosovo and constitute an “Albanian imagined community”. This article scrutinizes the memories of the “liberation” produced by Albanian-speaking migrants who were active on behalf of their homeland in Switzerland. It explores the construction of masculinities within narratives collected via oral history interviews. In line with the literature on “nation” and gender in Kosovo, this research acknowledges the presence of two main forms of masculinity: the “heroic fighter” and the “pacifist”. However, it also demonstrates the crystallization of the “entrepreneur”, an alternative type who integrates the transnational “neoliberal” discourses and proposes a more positive image of “Albanian men” in Switzerland.  相似文献   

3.
4.
不同品种油茶细根时空分布动态   总被引:1,自引:0,他引:1  
以赣无1、赣永5、长林4、长林40和赣447 等5个品种的油茶林为研究对象,采用微根管技术对0~40 cm土壤剖面的油茶细根进行了为期一年的观测,并分析了总根尖数(TRT)、平均根长密度(ARLD)、平均直径(ARD)的时空分布动态规律.结果表明: 2016年下半年,各品种的TRT和ARLD变化相对稳定,2017年上半年,各品种的TRT和ARLD变化幅度较大,尤其体现在赣无1与长林40中.赣无1的TRT和ARLD在2017年5月出现峰值,长林4的ARD在2017年3月出现峰值.赣无1的TRT和ARLD 以及长林4的ARD在整个观测期都显著大于其他品种.不同品种油茶细根在土层中的空间分布规律及动态变化存在明显差异,赣无1和赣447的细根主要分布在0~20 cm土层中,长林4和长林40的细根以20~40 cm土层居多,空间分布动态变化较其他3个品种稳定;赣永5的空间分布动态变化幅度较大,根量分布各土层无显著差异;长林4的ARD表现为20~40 cm土层>0~20 cm土层,其他品种的ARD在不同土层中无显著差异.赣无1的细根生物量最多,主要分布在上层;长林4的细根直径最粗,主要分布在下层.  相似文献   

5.
Cholangiopathies encompass a heterogeneous group of disorders affecting biliary epithelial cells (i.e. cholangiocytes). Early diagnosis, prognosis and treatment still remain clinically challenging for most of these diseases and are critical for adequate patient care. In the past decade, extensive research has emphasized microRNAs (miRs) as potential non-invasive biomarkers and tools to accurately identify, predict and treat cholangiopathies. MiRs can be released extracellularly conjugated with lipoproteins or encapsulated in extracellular vesicles (EVs). Research on EVs is also gaining attention since they are present in multiple biological fluids and may represent a relevant source of novel non-invasive biomarkers and be vehicles for new therapeutic approaches. This review highlights the most promising candidate miRs and EV-related biomarkers in cholangiopathies, as well as their relevant roles in biliary pathophysiology. This article is part of a Special Issue entitled: Cholangiocytes in Health and Disease edited by Jesus Banales, Marco Marzioni, Nicholas LaRusso and Peter Jansen.

Research strategy

PubMed search (April 2017) was done with the following terms: “microRNA”, “miRNA”, “miR”, “extracellular vesicles”, “EV”, “exosomes”, “primary biliary cholangitis”, “primary biliary cholangitis”, “PBC”, “primary sclerosing cholangitis”, “PSC”, “cholangiocarcinoma”, “CCA”, “biliary atresia”, “BA”, “polycystic liver diseases”, “PLD”, “cholangiopathies”, “cholestatic liver disease”. Most significant articles in full-text English were selected. The reference lists of selected papers were also considered.  相似文献   

6.
ABSTRACT

Handling and training methods of horses, which specially emphasize the importance of understanding horse body language and the use of reinforcements, are often used in practice, yet their effects are not completely known. This study investigated whether the use of a sympathetic approach during the preparation for public auctions influenced the reactivity of young horses towards humans. Sixteen thoroughbred yearlings were prepared for the public auctions during one month: eight horses (“Control”) were handled according to conventional practices, while the others (“Treated”) were handled with two sessions of basic training based on body language. The reactivity of horses was assessed in the presence of an “unfamiliar person” and a “familiar person” inside the horse's box. The experimenter recorded the presence/absence of selected behaviors during seven observational moments: “approaching the box,” “opening the box door,” “entering the box,” and four consecutive observations every thirty seconds. Reactivity of horses was ranked during the first experience of “bit,” “grooming,” “shower,” and application of the “surcingle.” Heart rate was telemetrically recorded during this final test. At the end of the auction preparation, “Treated” horses exhibited more “contact” (p = 0.08) and “lick” (p < 0.05) behaviors in the presence of a person. “Control” horses showed higher (non-significant) percentages of negative (more nervous) rankings during “bit,” “grooming,” and “surcingle” tests. Two “Control” horses showed aggressive behavior during the application of the surcingle and the test was interrupted to guarantee person and animal safety. In this pilot study, horses handled with a sympathetic approach showed less reactive behaviors compared with “Control” horses. It would be interesting to enlarge the sample size and assess if the use of non-coercive handling during the whole training period influences their welfare positively and for a long time.  相似文献   

7.
Responses of photosynthetic rate and stomatal conductance to water stress as weI1 as the relationship between photosynthetic rate and stomatal conductance were investigated with soybean cultivars “Ludou No. 4” and “7605”. The former was a high yield cultivars widely used in Shandong province, and the latter was a small grain soybean line bred by Shandong Academy of Agricultural science. Soil water stress decreased leaf apparent photosynthetic rate and stomatal conductance of two soybean cultivars, and “Ludou No. 4” decreased more than “7605”. At the same value of water potential, photosynthetic rate and stomatal conductance of “7605” were higher than those of “Ludou No,4”,but the rate of stomatal closure for “7605” was higher than “Ludou No. 4”. Decreasing of stomatal conductance caused rising of leaf temperature of two soybean cultivars, and the rising of “7605” was more rapid than “Ludou No. 4”, but at the same treatment of water stress, leaf temperature of “Ludou No. 4” was higher than “7605”. Leaf water use efficiecy (WUE) of two soybean cultivars were decreased under water stress, and the rate of decreasing in “Ludou No.4” was more rapid than in “7605”. These results showed that “7605” was more resistant to water:stress than “Ludou No. 4”.  相似文献   

8.
Prolactin heterogeneity in serum and milk were separated using Sephadex G-100. Three components were present in serum from lactating women with the following proportions: “void volume” -13.4%, “big” - 26.4%, and “little” - 60.3%. Milk from the same subjects did not contain “big” prolactin. Over 90% of the prolactin found in milk was “little” prolactin. The “little” prolactin in milk may not be similar to the “little” prolactin in the serum.  相似文献   

9.
The review deals with natural diversity of sherry (“flor”) Saccharomyces cerevisiae yeasts. Various properties of these yeasts are analyzed: life cycles, fermentation of sugars, sensitivity to methyl violet and killer toxins, and resistance to ethanol and sulfite. Special attention is paid to molecular identification and differentiation of sherry yeasts. The history of their nomenclature is considered, including the names of possible subpopulations: “aceti,” “beticus” (“cheresienses”), “cordubensis,” “gaditensis,” “hispanica” (“prostoserdovii”), and “oxidans.”  相似文献   

10.
Comprehensive dissections of aneuploid (trisomy 18 and 13) neonates have revealed numerous supernumerary muscles that, although present in rare individuals, do not regularly occur in the human. These supernumerary muscles include: “platysma occipitalis,” “rhomboideus occipitalis,” “deltopectoral” complex, “latissimocondyloideus,” “pectorodorsalis,” “chondrohumeralis,” and “peroneus digiti quinti”; a few muscles, e.g., palmaris longus and brevis are lacking altogether. One specimen exhibited a “linguofacial trunk” arising from the external carotid artery. The supernumerary muscles found in these aneuploid specimens are regularly found in monkeys and sometimes in the great apes. It is suggested that these supernumerary muscles may be “atavistic” structures. Problems in establishing homologies between these muscles among primates are discussed, and mechanisms leading to the development of these muscles in human aneuploids are proposed.  相似文献   

11.
Initial orientation and homing time were recorded in Argogorytes carbonarius after displacement in “open” and “closed” containers during two periods: “first” release dates and “later” release dates. At the later releases “closed” wasps homed much better than at first releases and better than “open” wasps. At the first releases, on the other hand, the “open” wasps homed (slightly) better than the “closed” wasps. An interpretation relates the better homing of “closed” wasps at the later trials to route learning at the first trials and discusses the differences and peculiarities of homing from familiar terrain and of home orientation by path integration.  相似文献   

12.
Discussion focuses on the history of classification of the steles of vascular plants, from Jeffrey (1898) to the present. Recent stelar classifications are largely based (1) on Jeffrey’s system (protostele vs. siphonostele, the latter with ectophloic vs. amphiphloic types), (2) on the system developed by the early British morphologists, notably Brebner (1902), Gwynne-Vaughan (1901), Tansley (1907-08), and Tansley and Lulham (1902) (protostele vs. medullated protostele vs. solenostele vs. dictyostele vs. eustele, with various subtypes), or (3) on a combination of the preceding two systems, the British usually superimposed upon the Jeffreyian, although generally erratically so. An extended classification of three main stelar types and 25 stelar subtypes derived from Brebner (1902), Gwynne-Vaughan (1901), Jeffrey (1898), Tansley (1907-08), and others is presented in outline form with accompanying etymology, synonymy, examples, and with detailed notes on controversial taxa, classificatory rationale, and historical aspects. Recognized are (1) “protostele” (divided into “ectophloic,” “endophloic,” and “amphiphloic,” with 7, 1, and 1 subtypes respectively), (2) “siphonostele” (divided into “ectophloic” with 2 subtypes and “amphiphloic,” the latter divided into “solenostele” and “dictyostele” with 3 subtypes each, plus “siphonostele incertae sedis”), and (3) “eustele” (divided into “eustele sensu stricto” with 4 subtypes, “pseudosiphonostele,” “reduced eustele,” and “polycyclic eustele”).  相似文献   

13.
The present paper deals mainly with the karyotype analysis of five materials in Angelica dahurica collected in Yanbian of Jilin, Anguo of Hebei, Yuxian of Henan, Hangzhou of Zhejiang and Suining of Sichuan. They are under the names “Dongbeidahuo”, “Qibaizhi”, “Yubaizhi”, ”Hangbaizhi” and “Chuanbaizhi” respectively. Among then “Dongbeidahuo” is a wild plant, which occurs in northeastern China, and the others are cultivated as important crude drugs in some provinces. “Qi-Baizhi” and “Yubaizhi” have been identified as conspecific with the wild Baizhi-“Do-Ngbeidahuo” (A. dahurica) according to the external morphological features, whereas the other cultivated ones, “Hangbaizhi” and “Chuanbaizhi”, treated as a variety (A. dahurica var. formosana). The results of karyotype analysis are shown in Plate 1, 2, with the formula 2n=22 =12 m+2 mSAT+4sm+4st. The karyotypes described here are constantly characterized by satellites attached to the fourth pair of metacentric chromosomes and differ from the published reports on the other species of the genus. It is reasonable to say that the five materials collectively named “Baizhi” are taxonomically closely related to each other and could be regarded as conspecific. Since the second chromosome pair is submetacentric in “Dongbeidahuo”, it may be justifiable to separate the wild plant from the cultivated ones and treat them as two separate varieties.  相似文献   

14.
A mutant of strain 69–1113a of Neurospora crassa, which shows periodic growth upon both complete and minimal media, was named “clock,” and some of the morphological and genetic differences between this mutant and the “patch” and “wild” strains were investigated. In contrast to the uniform growth of “wild,” the “clock” mutant produces a series of bands formed by cymelike aggregations of hyphae which become progressively more dense and finally mark the end (front) of a growth band. A new growth band is formed by a number of hyphae which grow out as in “wild” strains and dichotomize and form new cymes which again become progressively more dense and finally form a new front. It is shown that “clock” continues its rhythmic growth when cultured in continuous darkness. Some “wild” strains were induced to grow periodically on appropriate media. A medium containing equal quantities of sorbose and sucrose caused strain 65–811A (a “wild”) to produce the “patch” type growth. Random isolation, as well as ordered isolation, of ascospores following a cross between “wild” and “clock” show a 1: 1 segregation indicating that “clock” differs from “wild” by a single gene.  相似文献   

15.
“Song Lan” is a source of Chinese drugs such as “Daqingye”, “Banlangen” or “Qingdai”. We have discovered that the two species, “Song Lan” (Isatis indigotica Fort.) and woad (I. tinctoria L.), were mistakenly described in the literature due to their morphological polymorphism. In order to clarify the two species, cytology examination, pollen analysis, electrophoretic analysis of isoenzymes and soluble protein were performed. The results show that previous non-trichiferous type of woad is a “Song Lan”. As in woad, “Song Lan” is also morphologically of great variability. The base of canline leaves in this species may be sagittate or auriculate. We have not found the non-trichiferous type of woad in our country. It is reported for the first time that the chromosome number for “Song Lan” is 2n=14. The content of the indole glucoside in fresh leaves of “Song Lan” is about five timeshigher than in woad. For medicine cultivation of “Song Lan” is favorable.  相似文献   

16.
“地点”参数是构成IUCN红色名录标准的重要参数之一。在IUCN红色名录评估过程中,使用“地点”参数时常常忽略或简化致危因子的作用,有时仅以标本记录、采集地点数、观测数据、文献记录的分布点、管理单元及行政单位等信息代替“地点”参数,导致“地点”参数不准确甚至偏离实际情况。为解决这些问题,采用图解方式详细描述了“地点”参数的4类正确判断方法,包括根据致危因子的变化判断物种的“地点”参数、根据亚居群范围判断物种未受影响区域的“地点”参数、根据“地点”的最小尺度判断物种未受影响区域的“地点”参数、根据历史记录预测物种的“地点”参数;并以中国特有植物岩生红豆(OrmosiasaxatilisK.M.Lan)为实例对“地点”参数的正确判断方法进行进一步说明。在此基础上,对“地点”参数正确使用过程中存在的困难进行了讨论分析并提出了该参数的使用建议。  相似文献   

17.
A key goal of aging research was to understand mechanisms underlying healthy aging and develop methods to promote the human healthspan. One approach is to identify gene regulations unique to healthy aging compared with aging in the general population (i.e., “common” aging). Here, we leveraged Genotype‐Tissue Expression (GTEx) project data to investigate “healthy” and “common” aging gene expression regulations at a tissue level in humans and their interconnection with diseases. Using GTEx donors' disease annotations, we defined a “healthy” aging cohort for each tissue. We then compared the age‐associated genes derived from this cohort with age‐associated genes from the “common” aging cohort which included all GTEx donors; we also compared the “healthy” and “common” aging gene expressions with various disease‐associated gene expressions to elucidate the relationships among “healthy,” “common” aging and disease. Our analyses showed that 1. GTEx “healthy” and “common” aging shared a large number of gene regulations; 2. Despite the substantial commonality, “healthy” and “common” aging genes also showed distinct function enrichment, and “common” aging genes had a higher enrichment for disease genes; 3. Disease‐associated gene regulations were overall different from aging gene regulations. However, for genes regulated by both, their regulation directions were largely consistent, implying some aging processes could increase the susceptibility to disease development; and 4. Possible protective mechanisms were associated with some “healthy” aging gene regulations. In summary, our work highlights several unique features of GTEx “healthy” aging program. This new knowledge could potentially be used to develop interventions to promote the human healthspan.  相似文献   

18.
We have purified two different electrophoretic forms of Post-γ-globulin defined by electrophoresis as “native slow” form and “fast” form respectively. Amino acid sequences of the first fifty-two residues of the “native slow” form and twenty-nine of the “fast” form were determined. The sequence shows that the “fast” form lacks the first nine amino acids of the “native slow” form.This observation is consistent with the existence of a “native slow” form that is degraded into other more acidic forms of Post-γ-globulin by loss of basic amino acids.  相似文献   

19.
Three complementary models have been considered in which pH gradients (step function. linear pH or linear H?) impose asymmetry on a two-enzyme mixture. If the “combined pH dependences” of enzymes is pro-asymmetrical, the pH gradient induces an asymmetrical distribution of potential activities (“latent” asymmetry of functional structure). When substrate is added, “developed” asymmetry of effective activities appears which results in “substrate space wave” and pumping when the catalysed reaction couple is “inversible”. It is shown that only one steady state exists for a given boundary condition and is attained when the “combined effective activity” of enzymes is nil: the stationary flux with symmetrical boundaries or the stationary load with moving boundaries is proportional to “effective global activities” of enzymes. “Equivalent square models” could be proposed that would be able to describe “functional” or “permanent” structure pumps as well. These models belong to the thermodynamic branch and the asymmetrical “space wave” substrate concentration profiles obtained must be distinguished from dissipative structures. It appears that such primary active transport pumps are chemical equivalents of heat pumps.  相似文献   

20.
The Speckled Trout blastoderm at the late high blastula stage is characterized by two different cell populations. The “light” blastomeres comprise one cell type while the “dark” and “medium” blastomeres appear to differ from one another only in degree and thus may be considered as the second type. “Dark” and “medium” blastomeres are irregular in shape, are located centrally and deep in the blastoderm, have an abundance of smooth endoplasmic reticulum with associated 520 Å glycogen particles and a single mitochondrial profile. The “light” blastomeres have randomly arranged glycogen particles in minimal quantities in contrast to the “medium” and “dark” blastomeres and in addition exhibit three mitochondrial profiles, which could however represent artifacts. It is postulated that in the Speckled Trout cellular differentiation has commenced by the third day of incubation at 10°C and that this is manifested visually by the appearance of two different cell populations; the more differentiated “dark” and “medium” blastomeres possibly destined to give rise to the hypoblast and the less differentiated “light” blastomeres.  相似文献   

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