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PubMed1993

Knowledge and attitudes about AIDS of residents of greater Athens.

A prospective research project on health education about AIDS is being conducted in the Greater Athens area. In the first phase of the project, information was collected concerning the knowledge and attitudes about AIDS of a sample of the population. The results indicated that, in general, the population was moderately well informed about AIDS. The population groups who were best informed were the females, those with a higher level of education and a longer period of urban residence, and those in the occupational category merchants/sales personnel. Three attitudinal categories were identified which could be characterized as discrimination, stigmatization and fear of those affected by AIDS. These attitudes were linked respectively to: (1) approval of the enforcement of special measures, (2) stigmatizing of persons, behaviours and districts and (3) fear that AIDS comprises a major social threat. The attitudes expressed by restrictive measures towards those affected and stigmatization were associated with a low level of knowledge about most aspects of AIDS. Health education programmes directed at the population in the districts studied should take into account the findings of this study.

Acquired Immunodeficiency Syndrome↗
PubMed2006

Zinc is critically required for pollen function and fertilisation in lentil.

The role of zinc (Zn) in reproduction of lentil (Lens culinaris Medik. cv. DPL 15) and the extent to which the Zn requirement for reproduction can be met through supplementation of Zn at the time of initiation of the reproductive phase have been investigated. Low supply (0.1micromol/L) of Zn reduced the size of anthers, the pollen producing capacity and the size and viability of the pollen grains. Scanning electron microscopy (SEM) of pollen grains of Zn deficient plants showed enhanced thickening of exine and wide and raised muri. In vitro germination of pollen grains was reduced by >50% and growth of pollen tubes was retarded. Unlike Zn sufficient plants, the cuticle around the stigmatic papillae of Zn deficient plants remained intact, preventing the interaction between pollen grains and stigmatic exudates that provides the polarity for the growth of pollen tubes through the stylar tract. Zn deficiency increased the activity of acid phosphatase and peroxidase in extracts of pollen grains. Histochemical localisation on the stigmatic surface and native PAGE of the enzyme extracts of pollen grain and stigma exudates showed enhanced expression of acid phosphatase and peroxidase and suppressed expression of esterase in response to Zn deficiency. Zn deficiency reduced the setting of seeds and also their viability. The effect on seed setting was more marked than on in vitro germination of pollen grains, suggesting that the latter was not the exclusive cause of inhibition of fertility. Possibly, loss of fertility was also caused by impairment in pollen-pistil interaction conducive to pollen tube growth and fertilisation. Impairment in pollen structure and function and seed setting was observed even when plants were deprived of Zn at the time of flowering, but to a lesser extent than in plants maintained with low Zn supply from the beginning. Increasing the Zn supply from deficient to sufficient at the initiation of flowering decreased the severity of Zn deficiency effects on pollen and stigma morphology, pollen fertility and seed yield. In conclusion, structural and functional changes induced in pollen grains and stigma of Zn deficient plants and associated decrease in seed setting of lentil indicate a critical requirement of Zn for pollen function and fertilisation that can be partially met by supplementing Zn at the onset of the reproductive phase.

Lens Plant↗
PubMed2006

Culture and stigma: adding moral experience to stigma theory.

Definitions and theoretical models of the stigma construct have gradually progressed from an individualistic focus towards an emphasis on stigma's social aspects. Building on other theorists' notions of stigma as a social, interpretive, or cultural process, this paper introduces the notion of stigma as an essentially moral issue in which stigmatized conditions threaten what is at stake for sufferers. The concept of moral experience, or what is most at stake for actors in a local social world, provides a new interpretive lens by which to understand the behaviors of both the stigmatized and stigmatizers, for it allows an examination of both as living with regard to what really matters and what is threatened. We hypothesize that stigma exerts its core effects by threatening the loss or diminution of what is most at stake, or by actually diminishing or destroying that lived value. We utilize two case examples of stigma--mental illness in China and first-onset schizophrenia patients in the United States--to illustrate this concept. We further utilize the Chinese example of 'face' to illustrate stigma as having dimensions that are moral-somatic (where values are linked to physical experiences) and moral-emotional (values are linked to emotional states). After reviewing literature on how existing stigma theory has led to a predominance of research assessing the individual, we conclude by outlining how the concept of moral experience may inform future stigma measurement. We propose that by identifying how stigma is a moral experience, new targets can be created for anti-stigma intervention programs and their evaluation. Further, we recommend the use of transactional methodologies and multiple perspectives and methods to more fully capture the interpersonal core of stigma as framed by theories of moral experience.

Culture↗
PubMed2007

Examining attribution model of self-stigma on social support and psychological well-being among people with HIV+/AIDS.

Among various infectious diseases, HIV/AIDS is considered to be one of the most stigmatizing conditions. Using a prospective design, the present study attempted to test the attributional pathway from perceived control to responsibility to self-blame and finally to self-stigmatization, and to examine the social and psychological sequelae of stigma among a sample of 119 people with HIV/AIDS (PWHA) in Hong Kong. Structural equation modeling findings showed that the model had good fit to the data. Although the linkage between the attributions of control, responsibility, and blame was confirmed, the relationship of blame to self-stigma was not significant. Self-stigma was found to dampen social support and lead to psychological distress half a year later. The present study challenged the adequacy of attributional factors in understanding self-stigmatization and demonstrated the impact of stigma on psychological adjustment among PWHA.

Acquired Immunodeficiency Syndrome↗
PubMed1977

Ontogenetical and histochemical studies on the translator apparatus in Calotropis procera R. Br. I. The retinaculum.

Translator apparatus consists of 2 parts--the corpusculum, which is attached to the margin of the stigmatic head between the anthers, and a pair of arms by which the corpusculum is attached to the pollinia of the adjacent anther halves. Retinaculum spans the lateral blade of the corpusculum to the acellular beak of the pollinium. Ontogenetically, it is the secretory product of the stigma along the secondary stigmatic groove. Histochemically, it is composed of lipid, lignin, cutin and a little amount of proteins. Retinaculum, like corpusculum, is stigmatic in origin, but differs histochemically from the latter being composed mainly of lipo-protein complex and lacking phenolic compounds.

Histocytochemistry↗
PubMed1998

Sexual abuse trauma among Chinese survivors.

OBJECTIVE: As an initial effort to examine Chinese sexual abuse trauma in relation to the cultural construction of sexual victimization of women, this study applies Finkelhor and Browne's (1985) traumagenic dynamics model to examine post-abuse trauma among Chinese child and adolescent survivors in Taiwan. In analyzing sexual abuse trauma in the context of Chinese patriarchal familialism and cultural fetish for female chastity, this study attempts to explore cultural constructional process of sexual abuse in Chinese society. METHOD: This study conducted in-depth interviews with 19 survivors of, and three social workers on, sexual abuse in Taiwan. These interviews were guided by a semi-structured questionnaire on sexual abuse incidents and post-abuse responses/concerns, and had generated a total of 84 pages of written reports, which serve as the text-data for the analysis. RESULTS: This study identifies sexual stigmatization and senses of disempowerment and betrayal as the most pervasive trauma complex among Chinese sexual abuse survivors in Taiwan. This study found that, in addition to lowering self-esteem, sexual stigmatization results in polarized sexuality among adolescent survivors, as manifested in aversion to and preoccupation with sexuality. The abuse-induced disempowerment is manifested in the survivors' fear for personal safety and heightened sense of vulnerability to re-victimization. The sense of betrayal results in interpersonal difficulties as manifested in self-imposed isolation from others and/or suspicious attitudes toward others, which further impair the survivor's efficacy in meeting her abuse-induced clinging need. CONCLUSIONS: Overall, this study observes similar traumatic symptoms between Chinese survivors and their American counterparts as documented in the literature. Nevertheless, this study observes the sexual stigmatization represents the most prevailing post-abuse trauma among Chinese sexual abuse survivors, and reflects the patriarchal fetish for female chastity in the Chinese cultural construction of sexual victimization.

Adolescent↗
PubMed2002

The nature of stigma and medical conditions.

Stigma is society's negative evaluation of particular features or behavior. Cultural beliefs that define certain conditions negatively may create tainted and discounted identities for affected individuals and their families. Varied dimensions of stigmatized medical conditions include the nature of an illness, its history, and attributed characteristics; sources of the creation and perpetuation of stigma; the nature of the populations who are perceived to carry the illness; the kinds of treatments and practitioners sought for the condition; and how individuals with stigmatized medical conditions cope with societal insults that endanger their personal identity, social life, and economic opportunities. Individuals with stigmatized medical conditions, including epilepsy, may benefit from support groups that can help enhance their confidence. By focusing on the social and political resources and recourses available to them, such individuals can make substantial strides toward gaining their freedom from stigma.

Journal Article↗
PubMed2002

People with epilepsy: what do they know and understand, and how does this contribute to their perceived level of stigma?

Understanding the factors that contribute to the process of stigmatization of those with epilepsy may be an important element in the management of this condition. This study was designed to determine the contribution of clinical, demographic, and psychosocial variables to the stigma of epilepsy in adults. More than 6000 adults from 10 European countries were surveyed. Almost half of respondents reported that they had difficulty accepting their illness, and 17% felt stigmatized by it. A number of factors were predictive of stigma, including seizure frequency, knowledge of epilepsy, duration of epilepsy, and seizure type. The relative contributions of these factors varied depending on the country of origin of those surveyed. Further research is warranted to determine societal influences on the process of stigmatization.

Journal Article↗
PubMedDate not supplied

Attitudes of baccalaureate nursing students toward persons with acquired immunodeficiency syndrome according to mode of human immunodeficiency virus transmission.

The purpose of this descriptive correlational study was to (1) examine differences in baccalaureate nursing students' attitudes toward persons living with acquired immunodeficiency syndrome (AIDS) (PLWAs) according to mode of transmission and (2) identify demographic and academic variables influencing baccalaureate nursing students' attitudes toward PLWAs. Two hundred forty-six students from five geographically dispersed baccalaureate programs returned a completed demographic data sheet, AIDS Knowledge Scale, and AIDS Attitude Scale. The AIDS Attitude Scale, based on Goffman's theory of stigma, assesses stigmatizing attitudes, perceptions of deservedness of care, and attitudes of respect and regard for PLWAs according to five modes of human immunodeficiency virus transmission. The findings of this study demonstrated overall that baccalaureate students were the most stigmatizing toward persons who had developed AIDS through injecting drugs followed by sexual contact (both homosexual and heterosexual) and least stigmatizing toward PLWAs who contracted the virus through maternal transmission or a blood transfusion. Perhaps the PLWA who contracted AIDS through either maternal transmission or a blood transfusion was viewed as an "innocent victim" of the disease, whereas PLWAs who contracted the virus through either shared needles or sexual transmission were viewed as having acquired the infection through the results of their actions. The demographic characteristics of the respondents did not influence AIDS attitudes.

Acquired Immunodeficiency Syndrome↗
PubMed2004

A dual-process model of reactions to perceived stigma.

The authors propose a theoretical model of individual psychological reactions to perceived stigma. This model suggests that 2 psychological systems may be involved in reactions to stigma across a variety of social contexts. One system is primarily reflexive, or associative, whereas the other is rule based, or reflective. This model assumes a temporal pattern of reactions to the stigmatized, such that initial reactions are governed by the reflexive system, whereas subsequent reactions or "adjustments" are governed by the rule-based system. Support for this model was found in 2 studies. Both studies examined participants' moment-by-moment approach-avoidance reactions to the stigmatized. The 1st involved participants' reactions to persons with HIV/AIDS, and the 2nd, participants' reactions to 15 different stigmatizing conditions.

Female↗
PubMed1999

S-protein mutants indicate a functional role for SBP in the self-incompatibility reaction of Papaver rhoeas.

The self-incompatibility response involves S-allele specific recognition between stigmatic S proteins and incompatible pollen, resulting in S-specific pollen inhibition. In Papaver rhoeas, the pollen S gene product is predicted to be a receptor that interacts with the stigmatic S protein in an S specific manner. We recently identified an S protein binding protein (SBP) in pollen that binds stigmatic S proteins, although apparently not in an S-allele-specific manner. In order to investigate the functional significance of the interaction between S proteins and SBP, we constructed mutant derivatives of the S1 protein and tested their SBP-binding activity and their biological activity. Here we present an evaluation of nine mutant derivatives of the S1 protein. Western ligand blotting was used to show that mutations to amino acid residues in predicted loops 2 and 6 of the S1 protein cause significant reductions in their SBP-binding activity. These same mutants show a concomitant reduction in their ability to inhibit incompatible pollen. This establishes a direct link between SBP binding and inhibition of incompatible pollen and implicates SBP as a pollen component playing a key role in the self-incompatibility reaction. We discuss the possible nature of the contribution of SBP in the S-specific rejection of incompatible pollen.

Alleles↗
PubMed2003

Image size magnification and power and dilation factors for optical instruments in general.

Traditional treatments of spectacle magnification for distant objects consider only stigmatic spectacle lenses and they compare the retinal image size in a refractively fully compensated eye with the image size in the uncompensated eye. Spectacle magnification is expressed as a product of two factors, the power and shape factors of the lens. The power factor depends on the position of the entrance pupil of the eye. For an eye with an astigmatic cornea, however, the position of the entrance pupil is not well defined. Thus, the traditional approach to spectacle magnification does not generalize properly to allow for astigmatism. Within the constraints of linear optics and subject to the restriction that the eye's iris remains the aperture stop, this paper provides a complete, unified and exact treatment for optical instruments in general. It compares retinal image size in a generalized sense (including image shape and orientation) for any instrument in front of an eye with that of the eye alone irrespective of whether the instrument compensates or not. The approach does not make use of the concept of the entrance pupil at all and it allows for astigmatism and for non-alignment of refracting elements in the instrument and in the eye. The concept of spectacle magnification generalizes to the concept of instrument size magnification. Instrument size magnification can be expressed as the product of two matrix factors one of which can be interpreted as a power factor (as back-vertex power) and the other factor for which the name dilation factor is more appropriate in general. The general treatment is then applied to a number of special cases including afocal instruments, spectacle lenses (including obliquely crossing thick bitoric lenses), contact lenses, stigmatic systems and stigmatic eyes. In the case of spectacle lenses, the dilation factor reduces to the usual shape factor.

Astigmatism↗
PubMed2000

Felt stigma and impact of epilepsy on employment status among Estonian people: exploratory study.

This article examines the impact of epilepsy and its treatment on employment status and the extent of stigma among patients with epilepsy. Clinical and demographic data concerning patients examined during a recent epidemiological survey were obtained from medical notes and postal self-completed questionnaires. Information was collected from 90 patients aged 16-70 years. A third of the respondents had been seizure-free during the last year. Thirty-nine percent were working full-time, 24% were working part-time and 11% were unemployed. Sixty-three percent from those working part-time or unemployed considered their epilepsy to be a significant reason for this. Overall, 55.4% believed they had been treated unfairly at work or when trying to get a job. Fifty-one percent of respondents felt stigmatized by epilepsy, 14% of them highly so. The level of employment among epileptic people was not lower than in the general population. The percentage of stigmatization in general and the percentage of the severely stigmatized was as high or even higher than in other studies. Occurrence of stigma and its severity depended first and foremost on the type of seizures. The frequency of seizures was not clearly related to this.

Adult↗
PubMed2005

Stigma, social inequality and alcohol and drug use.

A heavy load of symbolism surrounds psychoactive substance use, for reasons which are discussed. Psychoactive substances can be prestige commodities, but one or another aspect of their use seems to attract near--universal stigma and marginalization. Processes of stigmatization include intimate process of social control among family and friends; decisions by social and health agencies; and governmental policy decisions. What is negatively moralized commonly includes incurring health, casualty or social problems, derogated even by other heavy users; intoxication itself; addiction or dependence, and the loss of control such terms describe; and in some circumstances use per se. Two independent literatures on stigma operate on different premises: studies oriented to mental illness and disability consider the negative effects of stigma on the stigmatized, and how stigma may be neutralized, while studies of crime generally view stigma more benignly, as a form of social control. The alcohol and drug literature overlap both topical areas, and includes examples of both orientations. Whole poverty and heavy substance use are not necessary related, poverty often increases the harm for a given level of use. Marginalization and stigma commonly add to this effect. Those in treatment for alcohol or drug problems are frequently and disproportionately marginalized. Studies of social inequality and substance use problems need to pay attention also to processes of stigmatization and marginalization and their effect on adverse outcomes.

Alcoholism↗
PubMedDate not supplied

Borderline personality disorder, stigma, and treatment implications.

Borderline personality disorder (BPD) is often viewed in negative terms by mental health practitioners and the public. The disorder may have a stigma associated with it that goes beyond those associated with other mental illnesses. The stigma associated with BPD may affect how practitioners tolerate the actions, thoughts, and emotional reactions of these individuals. It may also lead to minimizing symptoms and overlooking strengths. In society, people tend to distance themselves from stigmatized populations, and there is evidence that some clinicians may emotionally distance themselves from individuals with BPD. This distancing may be especially problematic in treating patients with BPD; in addition to being unusually sensitive to rejection and abandonment, they may react negatively (e.g., by harming themselves or withdrawing from treatment) if they perceive such distancing and rejection. Clinicians' reactivity may be self-protective in response to actual behavior associated with the pathology. As a consequence, however, the very behaviors that make it difficult to work with these individuals contribute to the stigma of BPD. In a dialectical relationship, that stigma can influence the clinician's reactivity, thereby exacerbating those same negative behaviors. The result is a self-fulfilling prophecy and a cycle of stigmatization to which both patient and therapist contribute. The extent to which therapist distancing is influenced by stigma is an important question that highlights the possibility that the stigma associated with BPD can have an independent contribution to poor outcome with this population. A final issue concerns the available means for identifying and limiting the impact of stigmatization on the treatment of individuals with BPD.

Borderline Personality Disorder↗
PubMed2006

Stigma about depression and its impact on help-seeking intentions.

OBJECTIVE: Research has shown that people are reluctant to seek professional help for depression, especially from mental health professionals. This may be because of the impact of stigma which can involve people's own responses to depression and help-seeking (self stigma) as well as their perceptions of others' negative responses (perceived stigma). The aim of this article was to examine community help-seeking intentions and stigmatizing beliefs associated with depression. METHOD: A total of 1,312 adults randomly sampled from the Australian community completed a questionnaire providing a depression vignette and measures of self- and perceived-stigmatizing responses, source-specific help-seeking intentions, current depressive symptoms and depression experience, and demographics. RESULTS: Many people reported they would feel embarrassed about seeking help from professionals, and believed that other people would have a negative reaction to them if they sought such help. Some expected professionals to respond negatively to them. Responses varied according to the sources of professional help. Self-embarrassment and expectations that others would respond negatively predicted the likelihood of help-seeking from professional sources. CONCLUSION: Self- and perceived-stigmatizing responses to help-seeking for depression are prevalent in the community and are associated with reluctance to seek professional help. Interventions should focus on minimizing expectations of negative responses from others and negative self-responses to help-seeking, and should target younger people.

Adolescent↗
PubMed2004

Pollination and reproductive biology of twelve species of neotropical Malpighiaceae: stigma morphology and its implications for the breeding system.

BACKGROUND AND AIMS: This study on reproductive biology examines the stigmatic morphology of 12 Brazilian Malpighiaceae species with regard to their pollination and breeding system. METHODS: The species were studied in natural populations of a semi-deciduous forest fragment. Style tips were processed for observation by SEM and pollen-tube growth was analyzed under fluorescence microscopy. The breeding system was investigated by isolating flowers within waterproof bags. Floral visitors were recorded through notes and photographs. KEY RESULTS: Flowers are yellow, pink or white, protogynous, herkogamous and sometimes lack oil glands. While Banisteriopsis pubipetala has functional female flowers (with indehiscent anthers), 11 species present hermaphrodite flowers. Stigmas of these species may be terminal, with a slightly concave surface, or internal, consisting of a circular cavity with a large orifice, and are covered with a thin, impermeable cuticle that prevents pollen from adhering, hydrating, or germinating. Malpighiaceae have a special type of 'wet' stigma, where a secretion accumulates under the cuticle and is released by mechanical means-mainly rupture by pollinators. Even though six species show a certain degree of self-compatibility, four of them present a form of late-acting self-incompatibility, and the individual of B. pubipetala is agamospermous. Species of Centris, Epicharis and Monoeca bees pollinate these flowers, mainly collecting oil. Some Epicharis and Monoeca species collected pollen by vibration. Paratetrapedia and Tetrapedia bees are pollen and oil thieves. CONCLUSIONS: The Malpiguiaceae species studied are pollinator-dependent, as spontaneous self-pollination is limited by herkogamy, protogyny and the stigmatic cuticle. Both the oil- and pollen-collecting behaviours of the pollinators favour the rupture of the stigmatic cuticle and the deposition of pollen on or inside the stigmas. As fruit-set rates in natural conditions are low, population fragmentation may have limited the sexual reproduction of these species.

Animals↗
PubMed2006

The role of stigma peroxidases in flowering plants: insights from further characterization of a stigma-specific peroxidase (SSP) from Senecio squalidus (Asteraceae).

Angiosperm stigmas have long been known to exhibit high levels of peroxidase activity when they are mature and most receptive to pollen but the biological function of stigma peroxidases is not known. A novel stigma-specific class III peroxidase gene, SSP (stigma-specific peroxidase) expressed exclusively in the stigmas of Senecio squalidus L. (Asteraceae) has recently been identified. Expression of SSP is confined to the specialized secretory cells (papillae) that compose the stigma epidermis. The literature on stigma peroxidases and hypotheses on their function(s) is reviewed here before further characterization of SSP and an attempt to determine its function are described. It is shown that SSP is localized to cytoplasmic regions of stigmatic papillae and also to the surface of these cells, possibly as a component of the pellicle, a thin layer of condensed protein typical of "dry" stigmas. Enzyme assays on recombinant SSP showed it to be a peroxidase with a preference for diphenolic substrates (ABTS and TMB) and a pH optimum of approximately 4.5. In such assays the peroxidase activity of SSP was low when compared with horseradish peroxidase. To explore the function of SSP and other stigmatic peroxidases, levels of reactive oxygen species (ROS) in stigmas of S. squalidus were investigated. Relatively large amounts of ROS, principally H(2)O(2), were detected in S. squalidus stigmas where most ROS/H(2)O(2) was localized to the stigmatic papillae, the location of SSP. These observations are discussed in the context of possible functions for SSP, other peroxidases, and ROS in the stigmas of angiosperms.

Flowers↗