Microtubules promote the non-cell autonomous action of microRNAs by inhibiting their cytoplasmic loading onto ARGONAUTE1 in Arabidopsis

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It is better to be ignorant of our moral enhancement: A reply to Zambrano

In a recent issue of Bioethics, I argued that compulsory moral bioenhancement should be administered covertly. Alexander Zambrano has criticized this argument on two fronts. First, contrary to my claim, Zambrano claims that the prevention of ultimate harm by covert moral bioenhancement fails to meet conditions for permissible liberty-restricting public health interventions. Second, contrary to my claim, Zambrano claims that covert moral bioenhancement undermines autonomy to a greater degree than does overt moral bioenhancement. In this paper, I rebut both of these arguments, then finish by noting important avenues of research that Zambrano’s arguments motivate.     

Changing household composition,labor patterns,and fertility in a highland New Guinea population

The European demographic transition of the nineteenth century is often proposed as a model for demographic change in twentieth century developing nations, and economic development is seen as leading to an inevitable reduction in total fertility in these nations. This paper examines data from the Gainj of Papua New Guinea, a natural fertility population with very low reproductive output, and suggests that the effects of development on fertility change are much more complex than a simple demographic transition model would suggest. Looking at two variables known to contribute significantly to low total fertility among the Gainj, late age at first birth for women and long interbirth intervals, the paper suggests that households, in their recruitment and allocation of labor, may exert a mediating influence in the relationship between economic development and fertility.     

Maternal mortality and women's condition: “The distress in being a woman”

For millenaria, maternal mortality has been considered as a fatality inherent to women's condition. Thanks to the progress of the obstetric technology, the world M.M.R. fell from 2.000 to 400 per 100.000 births during the past 150 years. At the same time women's condition improved chiefly because of a better level of education. Is there any relationship between them: the decrease of Maternal Mortality and the amelioration of women's general status? Or, in other words, can the decrease of Maternal Mortality Rate be considered as an “indicator” of the situation of women? After a historical review of the importance of the maternal mortality drama as it occured in older times before the “obstetric era”, which began with the improvement of the obstetric technology, this paper will present the actual situation of maternal mortality in relation with the obstetric coverage, the female literacy level and some other socio-economic variables, and in relation with the Gross National Product (G.N.P.) as an indicator of governmental interest in the specific female problems of giving-life.     

Rethinking counselling in prenatal screening: An ethical analysis of informed consent in the context of non-invasive prenatal testing (NIPT)

Informed consent is a key condition for prenatal screening programmes to reach their aim of promoting reproductive autonomy. Reaching this aim is currently being challenged with the introduction of non-invasive prenatal testing (NIPT) in first-trimester prenatal screening programmes: amongst others its procedural ease—it only requires a blood draw and reaches high levels of reliability—might hinder women’s understanding that they should make a personal, informed decision about screening. We offer arguments for a renewed recognition and use of informed consent compared to informed choice, and for a focus on value-consistent choices and personalized informational preferences. We argue for a three-step counselling model in which three decision moments are distinguished and differently addressed: (1) professionals explore women’s values concerning whether and why they wish to know whether their baby has a genetic disorder; (2) women receive layered medical-technical information and are asked to make a decision about screening; (3) during post-test counselling, women are supported in decision-making about the continuation or termination of their pregnancy. This model might also be applicable in other fields of genetic (pre-test) counselling, where techniques for expanding genome analysis and burdensome test-outcomes challenge counselling of patients.     

植物细胞与细胞间物质转运及其对生长发育的调控

细胞与细胞之间的物质运输和信号传递对于多细胞生物的生长发育非常重要．一些内源的大分子物质如蛋白质、核酸或核酸蛋白质复合体可以选择性地通过植物特有的亚细胞结构即胞间连丝（PD）在细胞之间运输．小分子物质主要以被动的形式在细胞间通过PD进行扩散．PD对蛋白质和核酸的运输具有选择性,这种运输受到严格调控．大分子物质在细胞间的运输对植物的生长和发育有极其重要的调控作用．KN1,STM,SHR,TRY和WER等转录因子在细胞之间的转运对于维持植物的茎尖分生组织、根尖分生组织和表皮细胞功能起重要作用．另外,某些小分子RNA也能够在植物细胞间进行选择性运输,并通过在不同细胞中降解或抑制靶mRNA的翻译来调节植物组织的生长发育．     

The aged: medical and social aspects

Physical health is affected by physiological aging that impacts on all tissues and organs, notably sensorial systems (hearing, sight), the locomotory and the immunological systems (lowering of resistance to infections). There is an increase with age in the incidence of many cancers (particularly breast, prostate, and colon cancers) and cardiovascular diseases. Regular check-ups are useful in order to take appropriate measures in time. It is important that people maintain regular physical activity and a balanced diet even up to an advanced age and the elderly must learn to adapt themselves to the ever-changing abilities of their organism. It is possible to slow down the aging process through good hygiene and often to maintain autonomy until the end of life. Mental health is threatened by impairment of mental functions, depressive tendencies, and the risk of senile dementia that cannot be foreseen or avoided. It appears that keeping intellectually active and having a good level of education impact favorably on mental aging. Social health depends, for a large part, on the way society accepts and treats the elderly. They must be kept integrated into society and allowed to live at home for as long as possible. Any measures of rejection, discrimination, and exclusion should be opposed. The dignity of the elderly must be respected and activities giving them a feeling of usefulness should be encouraged. It is important to help families who care for their parents at home, to develop and evaluate healthcare networks, and encourage medical professionals and social services to work together. The change in the demographic structure of France is a considerable phenomenon requiring a long-term strategy and not only superficial and cosmetic measures.     

FURTHERING INJUSTICES AGAINST WOMEN: GENETIC INFORMATION, MORAL OBLIGATIONS, AND GENDER

The purpose of this paper is to show that a decontextualized approach to ethical issues is not just unhelpful for the decision making process of real, situated human beings, but dangerous. This is so, because by neglecting the context in which people make moral decisions we run the risk of reinforcing or furthering injustices against already disadvantaged groups. To show this, I evaluate three moral obligations that our ability to obtain genetic information has made salient: the duty to obtain genetic information about ourselves, the obligation to inform family members about genetic risks and the duty not to reproduce when we know that there is a high risk of transmitting a serious disease or defect. I will argue here that in ignoring the context in which these moral obligations are put into practice, and in particular the situation of women in our society, those who defend these moral duties might be furthering injustices against women.     

IS SEX‐SELECTIVE ABORTION MORALLY JUSTIFIED AND SHOULD IT BE PROHIBITED?

In this paper we argue that sex-selective abortion (SSA) cannot be morally justified and that it should be prohibited. We present two main arguments against SSA. First, we present reasons why the decision for a woman to seek SSA in cultures with strong son-preference cannot be regarded as autonomous on either a narrow or a broad account of autonomy. Second, we identify serious harms associated with SSA including perpetuation of discrimination against women, disruption to social and familial networks, and increased violence against women. For these reasons, SSA should be prohibited by law, and such laws should be enforced. Finally, we describe additional strategies for decreasing son-preference. Some of these strategies rely upon highlighting the disadvantages of women becoming scarce, such as lack of brides and daughters-in-law to care for elderly parents. We should, however, be cautious not to perpetuate the view that the purpose of women is to be the consorts for, and carers of, men, and the providers of children. Arguments against SSA should be located within a concerted effort to ensure greater, deeper social and cultural equality between the sexes.     

Mass-vaccination programmes and the value of respect for autonomy

Respect for autonomy is problematic in relation to public health programmes such as vaccination, as the success of such programmes depends on widespread compliance. European countries have different policies for dealing with objectors to vaccination programmes. In some countries compliance is compulsory, while in others objectors are exempted or allowed to enter the programme under specific conditions.
In this paper I argue that the objectors should not be treated as a homogenous group as is done in the above-mentioned policies. Objectors have different arguments for not participating in vaccination programmes. Considering the value of respect for autonomy, some but not all of these arguments need to be accommodated by authorities.
The concept of 'narrative autonomy' provides criteria to distinguish between tenable and untenable claims to the right to refuse vaccination. Narrative autonomy understands autonomy as essentially linked to identity, as this provides the moral framework with which we assess our first-order preferences.
The above-mentioned concept of autonomy is derived from the concept of narrative identity as described by Marya Schechtman. She suggests that the application of the Articulation Constraint and the Reality Constraint enables us to establish the validity of personal narratives. Additionally, form and content features of identity, as proposed by Anthony Laden, will be used as criteria to establish the compatibility of the defectors' arguments with shared scientific and political values. Such compatibility is essential to accommodate respect for autonomy in the context of public health.