Patricia Poppe

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This study suggests that mass-media-generated interpersonal communication networks vary according to an individual's behavior-change stage. As people in Peru adopted modern family planning methods, they increasingly formed and perhaps relied on information from more technical interpersonal communication networks, which shifted from peers to doctors and(More)
The pathogenesis of preeclampsia is not clear but it is believed that the placenta is the primary cause of the problem [1]. Among many theories, allergic reactions to placental products (toxins) and pathological processes that limit the uteroplacental circulation (ischaemia) must be considered [2]. The role of vasoactive agents in placental vessels is more(More)
The authors empirically investigated the relative ordering of knowledge, attitudes, and practices in behavior change models and its relation to communicating health-related information. Considerable research has been conducted in the area of behavior change to identify and measure the presence of knowledge, attitudinal, and practice levels for many(More)
Structural HIV prevention interventions have gained prominence as ways to address underlying social and cultural factors that fuel the HIV epidemic. Identifying theories that explain how structural interventions are expected to change such factors can substantially increase their success. The Tchova Tchova community dialogue program, a theory-based(More)
The role of histamine and other mast cell derived mediators such as tumour necrosis factor (TNF), interleukin-8 (IL-8) and basic fibroblast growth factor (bFGF) in local angiogenesis has been the subject of much study [1, 2]. Vesicular structures of mast cells are the main source of histamine in placental tissue. It has recently been discovered that(More)
During ischaemia, there was no apparent change in malondialdehyde (MDA) content in rat myocardium. However, reoxygenation resulted in a significant increase in MDA content. The changes evoked by ischaemia and reoxygenation were significantly attenuated by addition of fenistil (histamine H1 receptor antagonist). Enzymatic antioxidant systems were not(More)
In humans, a strict classification into mucosal and connective tissue-type mast cells (MC) is not possible [1]. On the basis of neutral protease composition, human MC have been classified into two phenotypes. One phenotype, which is designated MCT (tryptase-positive, chymase-negative mast cells), contains tryptase but not chymase, while another phenotype,(More)
The pathogenesis of rheumatoid arthritis (RA) is multifactorial; several cytokines and other inflammatory mediators are involved in the induction and perpetuation of the chronic inflammatory process of the joints and in the systemic manifestations of the disease [1]. Although neurotransmitters and various chemical mediators also play an important role in(More)
Cartilage tissue acquired de novo is a very attractive material for the surgical reconstruction of joint surfaces, trachea, and maxillofacial elements. One of the primary challenges for tissue engineering is to determine the procedures that lead to the creation of material meeting the established qualitative and quantitative criteria. The goal of this work(More)
Mass media campaigns can be effective at communicating health information to a mass audience rather inexpensively. Critics of mass media health campaigns often contend, however, that interpersonal communication is more effective at changing behavior. Conversely, interpersonal communication activities to promote health can be effective at changing behavior,(More)