The objective of the present work is modeling the mobility habitus in the public transport system with low Co2 emission mechanics in the center of Mexico.In this sense,a documentary work was carried out with a review ...The objective of the present work is modeling the mobility habitus in the public transport system with low Co2 emission mechanics in the center of Mexico.In this sense,a documentary work was carried out with a review of sources indexed to national repositories,using the Delphi technique for the content analysis and the specification of the model.A study was conducted with a selection of 100 students to establish the reliability,linearity,sphericity,adequacy,and validity of an instrument from which a relationship of dependence between income and mobility habitus was observed.The limits of the search,selection,and processing of information are recognized,and it is recommended to extend the research to international repositories,as well as to employ a more sophisticated technique.展开更多
Habitus remains an ambiguous and cryptic concept,triggering drastic debate not only in sociology and anthropology but also in culture studies and literary criticism.The topic has been cited by a range of writers,notab...Habitus remains an ambiguous and cryptic concept,triggering drastic debate not only in sociology and anthropology but also in culture studies and literary criticism.The topic has been cited by a range of writers,notably Mauss,Husserl and Bourdieu.Even Bourdieu did not provide a clear,authoritative or coherent definition of the term in his work.Due to the fact that habitus plays an indispensable part of social constructionism,which defines our understanding of the world.It is necessary for parents,schools and the government to learn about this concept,and utilize it to guide their education practice and policy enactment.This essay will explore the theoretical concept of“habitus”and its interrelationship with“field”and“capital”.Then discuss the wide disparity in different social groups,in terms of habitus and capital in China.Followed by an analysis of the imbalances in Chinese rural and urban schools respectively,in the field of English language teaching.It aims to help readers better understand the poor performance of students who come from less advantageous social groups in language learning,rather than attributing their failure to their individual defects.The essay will also introduce the 2003 English curriculum reform,illustrate the current status of its implementation in various family upbringing and school locations and put forward some feasible proposals for parents,teachers,students and government to promote social equity in English language teaching in China.展开更多
This paper analyzed revenge in The Count of Monte Cristo.Bourdieu’s concept of habitus was used in the analysis with the help of field and capital.Dantes,an innocent and kind gentleman is unwillfully exposed to the o...This paper analyzed revenge in The Count of Monte Cristo.Bourdieu’s concept of habitus was used in the analysis with the help of field and capital.Dantes,an innocent and kind gentleman is unwillfully exposed to the outside world which automatically determines his actions and inactions as Bourdieu explains in his concept of habitus as one’s contact with his environment for a long period of time being a catalyst in determining one’s thoughts and actions.At the end of the study it was observed that Bourdieu’s concepts being used in analysis gives a deeper understanding of the text itself and the message Bourdieu conveys in respect to his concept of habitus and finally making the study pleasant to readers’understanding.展开更多
The lack of reading habits among Mexican population is an idea based on national and international indicators, which illustrate the danger of this situation; however, these indicators fail to go deeper into the proble...The lack of reading habits among Mexican population is an idea based on national and international indicators, which illustrate the danger of this situation; however, these indicators fail to go deeper into the problem. This project was aimed to obtain more information about the habitus and social representations of college students reading habits, using as theoretical elements the principles developed by Pierre Bourdieu and Serge Moscovici. The project was developed in a public university, located in Mexico's northeast region; 19 students were part of the sample group. Two research tools were used to obtain data: survey and focus group. The project analyzed academic and environmental aspects, beyond the "ought to be", that affected the development and provided characteristics on the daily sociocultural reality of the students, with a view of the real environment of the students without "make-up". The project deepened into the analysis of the reading practices and not only the usual numeric indicators, which traditionally condemn the reading practices in Mexico. The results of this study showed that students read a lot more than what they and their teachers think they do, this taking into consideration electronic documents, general interest publications, and commercial magazines, among others. The point of view of some teachers and researchers, when it comes to reading habits recognize non-academic, simple and interesting reading more important impact on their reading habits shows a tendency to be pedantic and canonic; it does not for young people, which in the long term, could have a展开更多
My claim is that Bourdieu's concept of habitus is not consistent and its ambiguities conceal an imprecision concerning the subject of social action. Indeed, Bourdieu defines habitus in three different ways: as a cap...My claim is that Bourdieu's concept of habitus is not consistent and its ambiguities conceal an imprecision concerning the subject of social action. Indeed, Bourdieu defines habitus in three different ways: as a capacity, as a set of dispositions, and as a scheme for practice. That is why he cannot solve the problem of the duality of agent and habitus and produces a problem offundamentation, as we can see in his troubles to determine which is the substratum of social actions. Though Bourdieu claims he borrows the concept of habitus from Husserl and other phenomenologists, many divergences can be stated in the way they conceive it. Unlike Bourdieu, phenomenology can establish precise relations of fundamentation between agent, habitus, and the ego because it avoids the fallacy of the wrong level involved in the attribution of systemic properties to personal eogic structures. Accordingly, it provides a consistent and precise concept of the habitus,展开更多
This work;It was made to determine the positive and negative usage information, attitudes and behaviors of social networking networks for users. Today, it is well known how the wide social effects of social networking...This work;It was made to determine the positive and negative usage information, attitudes and behaviors of social networking networks for users. Today, it is well known how the wide social effects of social networking sites are widespread and effective. As far as it can be followed from written and visual media, it causes significant damages for attitudes and behaviors for individuals. Looking at the results of the study, it seems impossible to limit the time and necessity of these networks for people, but it is understood that people force their limits and capacity. It was determined that the general acceptance and rejection areas are mixed and the dominant distinctive effects were weakened. Unable to prevent social dissolution and deterioration was realized by these social networks of networks. However, we cannot only talk about negative effects because their positive effects should be mentioned. Data were obtained in this direction. For example, some segments encourage the users of these sites to have more freedom, to develop democracy and human rights awareness. However, the real problem is when and where to stand. This study;Social networking networks use information, attitudes and behaviors;It was carried out for the purpose of evaluating the use of nicknames and networks for the use of networks. The data of the study were obtained by the application of a questionnaire and the data obtained were analyzed with appropriate statistical analysis methods. In the first part of the study, field study/operational concept scanning is performed and theoretical information is included. In the second part, the purpose of the study, the problem status, the importance of the study, limitations, assumptions, problem question, research method, research universe and sample are specified and informed. In the third section, the data obtained using appropriate statistical methods are analyzed. In the last section, some important suggestions and comments are made in the light of the data obtained.展开更多
A full habituated cell line C_ 20hi was screened from 2,4_D dependent line (C_ 20D) of Catharanthus roseus (L.) G. Don. The investigation involved the cell growth, ajmalicine production and enzyme activity related t...A full habituated cell line C_ 20hi was screened from 2,4_D dependent line (C_ 20D) of Catharanthus roseus (L.) G. Don. The investigation involved the cell growth, ajmalicine production and enzyme activity related to indole alkaloid biosynthesis in both cell lines. These results indicated that C_ 20hi cells grew faster than C_ 20D cells, and average ajmalicine content in C_ 20hi cells was 18.4 times more than that in C_ 20D when cultured in the production medium. In the growth medium, average ajmalicine content in C_ 20hi cells was 31.9 times more than that in C_ 20D cells, while the cell growth has no obvious difference. The comparison of enzyme activities in C_ 20hi and C_ 20D cells indicated that tryptophan decarboxylase (TDC), strictosidine synthase (SSS) and geraniol_10_dehydrogenase (G10H) activities have no close relation to ajmalicine accumulation, although the activities of these enzymes were higher when cells were cultured in the production medium than in the growth medium. The C_ 20hi cells are relatively stable in five years of culture.展开更多
Each directed graph with the asymmetric costs defined over its arcs,can be represented by a table,which we call an expansion table.The basic properties of cycles and spanning tables of the expansion table correspondin...Each directed graph with the asymmetric costs defined over its arcs,can be represented by a table,which we call an expansion table.The basic properties of cycles and spanning tables of the expansion table corresponding to the cycles and spanning trees of the directed graph is first explored.An algorithm is then derived to find a minimum spanning table corresponding to a minimum spanning tree in the directed graph.Finally,how to use the algorithm to find the optimal expansion of competence set and related problems are discussed.展开更多
This paper intends to explore LI5 Xun's translation activities in the 1930s from the perspective of Bourdieu'ssociological theory. It elaborates on his text selection and his strategy choice in particular and finds ...This paper intends to explore LI5 Xun's translation activities in the 1930s from the perspective of Bourdieu'ssociological theory. It elaborates on his text selection and his strategy choice in particular and finds out that hisunique translation practice is determined by his translation habitus and the social and cultural context in his time.And the construction of his translation habitus is closely related with his life experiences, political stand, and loftypatriotism.展开更多
The paper introduces the three core concepts of Bourdieu’s sociological theory and their application in translation studies.The paper then examines and discusses the English translation of The Art of War from Bourdie...The paper introduces the three core concepts of Bourdieu’s sociological theory and their application in translation studies.The paper then examines and discusses the English translation of The Art of War from Bourdieu’s sociological perspective and the perspective of ephemerality.A comprehensive and objective description of the different translations of the same original text in different historical periods,the strategies of the translators,and the social,historical and cultural factors affecting the translation process can lead to a deeper understanding and proper orientation of translation.展开更多
Translation activities,social environment and translators’individual particularities are combined in translation sociology which are provided broader theoretical perspective for translation studies.In this paper,Lian...Translation activities,social environment and translators’individual particularities are combined in translation sociology which are provided broader theoretical perspective for translation studies.In this paper,Liang Shiqiu’s translation theory is analyzed from the perspective of translation sociology and there should be a new perspective which has expanded in the research of Liang Shiqiu’s translation theory.展开更多
We reported a female patient with unrecognized celiac disease and multiple extra intestinal manifestations, mainly related to a deranged immune function, including macroamilasemia, macrolipasemia, IgA nephropathy,thyr...We reported a female patient with unrecognized celiac disease and multiple extra intestinal manifestations, mainly related to a deranged immune function, including macroamilasemia, macrolipasemia, IgA nephropathy,thyroiditis, and anti-b2-glicoprotein-1 antibodies, that disappeared or improved after the implementation of a gluten-free diet.展开更多
Dilatation of the colon and the rectum, which is not attributable to aganglionosis, is a rare finding and can be the result of intractable chronic constipation. We report a rare case of a 29-year-old male patient with...Dilatation of the colon and the rectum, which is not attributable to aganglionosis, is a rare finding and can be the result of intractable chronic constipation. We report a rare case of a 29-year-old male patient with impressive megacolon, in whom Hirschsprung's or Chagas disease was ruled out. In the present case, dilatation of the colon was most likely due to a behavioral disorder with habitual failure of defecation. Chronic stool retention led to a bizarre bulging of the large bowel with displacement of the other abdominal organs and severe occult blood loss. Because of two episodes of life-threatening gastrointestinal bleeding despite conventional treatment of constipation, a surgical approach for bowel restoration was necessary. Temporary loop ileostomy had to be performed for depressurization of the large bowel and the subsequent possibility for effective antegrade colonic lavage to remove impacted stools. Shortly after the operation, the patient was healthy and could easily manage the handling of the ileostomy. However, the course of the megacolon in this young adult cannot be predicted and the follow-up will have to reveal if regression of this extreme colonic distension with reestablishment of regular rectal perception will occur.展开更多
Objective: In this study the purpose is to evaluate the effectiveness of daily bemiparin sodium injection in preventing early pregnancy loss and in achieving live births in pregnant patients, not ahead of 6th week, wh...Objective: In this study the purpose is to evaluate the effectiveness of daily bemiparin sodium injection in preventing early pregnancy loss and in achieving live births in pregnant patients, not ahead of 6th week, who are diagnosed with habitual abortion in a case-controlled randomized prospective study. Study Design: In this prospective study, 120 pregnant patients not ahead of 6th week and aged between 21 - 36 and diagnosed with habitual abortion between April 2011 and April 2012 in our clinic were included. Habitual abortion diagnosis criteria was based on patient history of three or more miscarriages before the 20th week and a genetically documented homozygote or heterozygote mutation of the methylenetetrahydrofolate Reductase gene. Results: The rate and the number of live births in the study group was 60 (93.75%) and statistically higher than the control group 32 (57.14%). The difference was found to be statistically significant (p = 0.001). The rate and the number of abortions in the control group was 24 (42.85%) and statistically higher than the study group 4 (6.25%). The difference was found to be statistically significant (p = 0.001). Conclusion: In order to maintain a healthy pregnancy an effective uteroplacental circulation is a must and any defects in haemostasis mechanisms may have an adverse influence. A few non-randomized studies comparing pregnancy results of low dose salycilic acid and low molecular weight heparin usage in patients also show that prophylaxis might be beneficial.展开更多
Chronically high occupational exposure to airborne metals like iron can impair olfactory function, but little is known about how low iron status modifies olfactory behavior. To investigate the influence of body iron s...Chronically high occupational exposure to airborne metals like iron can impair olfactory function, but little is known about how low iron status modifies olfactory behavior. To investigate the influence of body iron status, weanling rats were fed a diet with low iron content (4 - 7 ppm) to induce iron deficiency anemia and olfactory behavior was compared to control rats fed an isocaloric diet sufficient in iron (210 - 220 ppm). Iron-deficient rats had prolonged exploratory time for attractive odorants in behavioral olfactory habituation/dishabituation tests, olfactory preference tests and olfactory sensitivity tests compared with control rats. No significant differences were observed for aversive odorants between the two groups. These findings suggest that iron-dependent functions may be involved in controlling and processing of olfactory signal transduction via self and lateral inhibition such that odorant signal remains stronger for longer times prolonging exploratory activity on attractive odorants in the behavioral tests. These findings establish that iron deficiency can modify olfactory behavior.展开更多
Circulating antisperm antibodies (AsAb) and immunosuppressive material in seminal plasma (SPIM)were determined by solid-phase enzyme staining assay and anticomplement test respectively in 686 patients with abortion (i...Circulating antisperm antibodies (AsAb) and immunosuppressive material in seminal plasma (SPIM)were determined by solid-phase enzyme staining assay and anticomplement test respectively in 686 patients with abortion (including 285 couples) . 241 fertile couple served as control. It’s found that the positive rate of AsAb in infertile patients was significantly higher than that in fertile control,being 36.6% vs 3.3% (P【0.001). AsAb was even more offen detected in recurrent aborting patients. Male patients whose spouses aborted 2-6 fetuses had significantly less SPIM than control, sperm count and sperm motility were also significantly decreased. But the incidence of pyospermia was significantly greater than that in control. It is concluded that AsAb and SPIM have played an important role in the development of recurrent abortions.展开更多
文摘The objective of the present work is modeling the mobility habitus in the public transport system with low Co2 emission mechanics in the center of Mexico.In this sense,a documentary work was carried out with a review of sources indexed to national repositories,using the Delphi technique for the content analysis and the specification of the model.A study was conducted with a selection of 100 students to establish the reliability,linearity,sphericity,adequacy,and validity of an instrument from which a relationship of dependence between income and mobility habitus was observed.The limits of the search,selection,and processing of information are recognized,and it is recommended to extend the research to international repositories,as well as to employ a more sophisticated technique.
文摘Habitus remains an ambiguous and cryptic concept,triggering drastic debate not only in sociology and anthropology but also in culture studies and literary criticism.The topic has been cited by a range of writers,notably Mauss,Husserl and Bourdieu.Even Bourdieu did not provide a clear,authoritative or coherent definition of the term in his work.Due to the fact that habitus plays an indispensable part of social constructionism,which defines our understanding of the world.It is necessary for parents,schools and the government to learn about this concept,and utilize it to guide their education practice and policy enactment.This essay will explore the theoretical concept of“habitus”and its interrelationship with“field”and“capital”.Then discuss the wide disparity in different social groups,in terms of habitus and capital in China.Followed by an analysis of the imbalances in Chinese rural and urban schools respectively,in the field of English language teaching.It aims to help readers better understand the poor performance of students who come from less advantageous social groups in language learning,rather than attributing their failure to their individual defects.The essay will also introduce the 2003 English curriculum reform,illustrate the current status of its implementation in various family upbringing and school locations and put forward some feasible proposals for parents,teachers,students and government to promote social equity in English language teaching in China.
文摘This paper analyzed revenge in The Count of Monte Cristo.Bourdieu’s concept of habitus was used in the analysis with the help of field and capital.Dantes,an innocent and kind gentleman is unwillfully exposed to the outside world which automatically determines his actions and inactions as Bourdieu explains in his concept of habitus as one’s contact with his environment for a long period of time being a catalyst in determining one’s thoughts and actions.At the end of the study it was observed that Bourdieu’s concepts being used in analysis gives a deeper understanding of the text itself and the message Bourdieu conveys in respect to his concept of habitus and finally making the study pleasant to readers’understanding.
文摘The lack of reading habits among Mexican population is an idea based on national and international indicators, which illustrate the danger of this situation; however, these indicators fail to go deeper into the problem. This project was aimed to obtain more information about the habitus and social representations of college students reading habits, using as theoretical elements the principles developed by Pierre Bourdieu and Serge Moscovici. The project was developed in a public university, located in Mexico's northeast region; 19 students were part of the sample group. Two research tools were used to obtain data: survey and focus group. The project analyzed academic and environmental aspects, beyond the "ought to be", that affected the development and provided characteristics on the daily sociocultural reality of the students, with a view of the real environment of the students without "make-up". The project deepened into the analysis of the reading practices and not only the usual numeric indicators, which traditionally condemn the reading practices in Mexico. The results of this study showed that students read a lot more than what they and their teachers think they do, this taking into consideration electronic documents, general interest publications, and commercial magazines, among others. The point of view of some teachers and researchers, when it comes to reading habits recognize non-academic, simple and interesting reading more important impact on their reading habits shows a tendency to be pedantic and canonic; it does not for young people, which in the long term, could have a
文摘My claim is that Bourdieu's concept of habitus is not consistent and its ambiguities conceal an imprecision concerning the subject of social action. Indeed, Bourdieu defines habitus in three different ways: as a capacity, as a set of dispositions, and as a scheme for practice. That is why he cannot solve the problem of the duality of agent and habitus and produces a problem offundamentation, as we can see in his troubles to determine which is the substratum of social actions. Though Bourdieu claims he borrows the concept of habitus from Husserl and other phenomenologists, many divergences can be stated in the way they conceive it. Unlike Bourdieu, phenomenology can establish precise relations of fundamentation between agent, habitus, and the ego because it avoids the fallacy of the wrong level involved in the attribution of systemic properties to personal eogic structures. Accordingly, it provides a consistent and precise concept of the habitus,
文摘This work;It was made to determine the positive and negative usage information, attitudes and behaviors of social networking networks for users. Today, it is well known how the wide social effects of social networking sites are widespread and effective. As far as it can be followed from written and visual media, it causes significant damages for attitudes and behaviors for individuals. Looking at the results of the study, it seems impossible to limit the time and necessity of these networks for people, but it is understood that people force their limits and capacity. It was determined that the general acceptance and rejection areas are mixed and the dominant distinctive effects were weakened. Unable to prevent social dissolution and deterioration was realized by these social networks of networks. However, we cannot only talk about negative effects because their positive effects should be mentioned. Data were obtained in this direction. For example, some segments encourage the users of these sites to have more freedom, to develop democracy and human rights awareness. However, the real problem is when and where to stand. This study;Social networking networks use information, attitudes and behaviors;It was carried out for the purpose of evaluating the use of nicknames and networks for the use of networks. The data of the study were obtained by the application of a questionnaire and the data obtained were analyzed with appropriate statistical analysis methods. In the first part of the study, field study/operational concept scanning is performed and theoretical information is included. In the second part, the purpose of the study, the problem status, the importance of the study, limitations, assumptions, problem question, research method, research universe and sample are specified and informed. In the third section, the data obtained using appropriate statistical methods are analyzed. In the last section, some important suggestions and comments are made in the light of the data obtained.
文摘A full habituated cell line C_ 20hi was screened from 2,4_D dependent line (C_ 20D) of Catharanthus roseus (L.) G. Don. The investigation involved the cell growth, ajmalicine production and enzyme activity related to indole alkaloid biosynthesis in both cell lines. These results indicated that C_ 20hi cells grew faster than C_ 20D cells, and average ajmalicine content in C_ 20hi cells was 18.4 times more than that in C_ 20D when cultured in the production medium. In the growth medium, average ajmalicine content in C_ 20hi cells was 31.9 times more than that in C_ 20D cells, while the cell growth has no obvious difference. The comparison of enzyme activities in C_ 20hi and C_ 20D cells indicated that tryptophan decarboxylase (TDC), strictosidine synthase (SSS) and geraniol_10_dehydrogenase (G10H) activities have no close relation to ajmalicine accumulation, although the activities of these enzymes were higher when cells were cultured in the production medium than in the growth medium. The C_ 20hi cells are relatively stable in five years of culture.
基金Supported by National Natural Science Foundation of China(No.79870 0 30 )
文摘Each directed graph with the asymmetric costs defined over its arcs,can be represented by a table,which we call an expansion table.The basic properties of cycles and spanning tables of the expansion table corresponding to the cycles and spanning trees of the directed graph is first explored.An algorithm is then derived to find a minimum spanning table corresponding to a minimum spanning tree in the directed graph.Finally,how to use the algorithm to find the optimal expansion of competence set and related problems are discussed.
文摘This paper intends to explore LI5 Xun's translation activities in the 1930s from the perspective of Bourdieu'ssociological theory. It elaborates on his text selection and his strategy choice in particular and finds out that hisunique translation practice is determined by his translation habitus and the social and cultural context in his time.And the construction of his translation habitus is closely related with his life experiences, political stand, and loftypatriotism.
文摘The paper introduces the three core concepts of Bourdieu’s sociological theory and their application in translation studies.The paper then examines and discusses the English translation of The Art of War from Bourdieu’s sociological perspective and the perspective of ephemerality.A comprehensive and objective description of the different translations of the same original text in different historical periods,the strategies of the translators,and the social,historical and cultural factors affecting the translation process can lead to a deeper understanding and proper orientation of translation.
文摘Translation activities,social environment and translators’individual particularities are combined in translation sociology which are provided broader theoretical perspective for translation studies.In this paper,Liang Shiqiu’s translation theory is analyzed from the perspective of translation sociology and there should be a new perspective which has expanded in the research of Liang Shiqiu’s translation theory.
基金grants from the Ministero dell'Istruzione,dell'Università e della Ricerca and the University of Florence
文摘We reported a female patient with unrecognized celiac disease and multiple extra intestinal manifestations, mainly related to a deranged immune function, including macroamilasemia, macrolipasemia, IgA nephropathy,thyroiditis, and anti-b2-glicoprotein-1 antibodies, that disappeared or improved after the implementation of a gluten-free diet.
文摘Dilatation of the colon and the rectum, which is not attributable to aganglionosis, is a rare finding and can be the result of intractable chronic constipation. We report a rare case of a 29-year-old male patient with impressive megacolon, in whom Hirschsprung's or Chagas disease was ruled out. In the present case, dilatation of the colon was most likely due to a behavioral disorder with habitual failure of defecation. Chronic stool retention led to a bizarre bulging of the large bowel with displacement of the other abdominal organs and severe occult blood loss. Because of two episodes of life-threatening gastrointestinal bleeding despite conventional treatment of constipation, a surgical approach for bowel restoration was necessary. Temporary loop ileostomy had to be performed for depressurization of the large bowel and the subsequent possibility for effective antegrade colonic lavage to remove impacted stools. Shortly after the operation, the patient was healthy and could easily manage the handling of the ileostomy. However, the course of the megacolon in this young adult cannot be predicted and the follow-up will have to reveal if regression of this extreme colonic distension with reestablishment of regular rectal perception will occur.
文摘Objective: In this study the purpose is to evaluate the effectiveness of daily bemiparin sodium injection in preventing early pregnancy loss and in achieving live births in pregnant patients, not ahead of 6th week, who are diagnosed with habitual abortion in a case-controlled randomized prospective study. Study Design: In this prospective study, 120 pregnant patients not ahead of 6th week and aged between 21 - 36 and diagnosed with habitual abortion between April 2011 and April 2012 in our clinic were included. Habitual abortion diagnosis criteria was based on patient history of three or more miscarriages before the 20th week and a genetically documented homozygote or heterozygote mutation of the methylenetetrahydrofolate Reductase gene. Results: The rate and the number of live births in the study group was 60 (93.75%) and statistically higher than the control group 32 (57.14%). The difference was found to be statistically significant (p = 0.001). The rate and the number of abortions in the control group was 24 (42.85%) and statistically higher than the study group 4 (6.25%). The difference was found to be statistically significant (p = 0.001). Conclusion: In order to maintain a healthy pregnancy an effective uteroplacental circulation is a must and any defects in haemostasis mechanisms may have an adverse influence. A few non-randomized studies comparing pregnancy results of low dose salycilic acid and low molecular weight heparin usage in patients also show that prophylaxis might be beneficial.
文摘Chronically high occupational exposure to airborne metals like iron can impair olfactory function, but little is known about how low iron status modifies olfactory behavior. To investigate the influence of body iron status, weanling rats were fed a diet with low iron content (4 - 7 ppm) to induce iron deficiency anemia and olfactory behavior was compared to control rats fed an isocaloric diet sufficient in iron (210 - 220 ppm). Iron-deficient rats had prolonged exploratory time for attractive odorants in behavioral olfactory habituation/dishabituation tests, olfactory preference tests and olfactory sensitivity tests compared with control rats. No significant differences were observed for aversive odorants between the two groups. These findings suggest that iron-dependent functions may be involved in controlling and processing of olfactory signal transduction via self and lateral inhibition such that odorant signal remains stronger for longer times prolonging exploratory activity on attractive odorants in the behavioral tests. These findings establish that iron deficiency can modify olfactory behavior.
文摘Circulating antisperm antibodies (AsAb) and immunosuppressive material in seminal plasma (SPIM)were determined by solid-phase enzyme staining assay and anticomplement test respectively in 686 patients with abortion (including 285 couples) . 241 fertile couple served as control. It’s found that the positive rate of AsAb in infertile patients was significantly higher than that in fertile control,being 36.6% vs 3.3% (P【0.001). AsAb was even more offen detected in recurrent aborting patients. Male patients whose spouses aborted 2-6 fetuses had significantly less SPIM than control, sperm count and sperm motility were also significantly decreased. But the incidence of pyospermia was significantly greater than that in control. It is concluded that AsAb and SPIM have played an important role in the development of recurrent abortions.