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1.
Protoplasma ; 261(2): 245-256, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37698669

RESUMO

Secretory trichomes and colleters are two of the secretory structures whose exudates may cover the body of the plant. Such secretions comprise resins or mucilages which are associated with an array of ecological roles. In Rosaceae, secretory trichomes have been reported for the leaves while colleters associated with leaf teeth. Our study aimed to identify the secretory structures of Rosa lucieae and understand the ecological role played by these glands as interpreted by morphoanatomical and histochemical studies. Samples from developing and fully mature leaves were collected, fixed, and processed according to usual techniques for light and scanning electron microscopy. In R. lucieae, colleters are restricted to the leaf and stipular margins and are associated with the teeth. They present a parenchymatous axis surrounded by a secretory palisade epidermis and usually fall off after the secretory activity is finished. Different from colleters, secretory trichomes are persistent. They present a multicellular secretory head and stalk. They are found at the base of the leaflet, petiolule, rachis, and petiole and occasionally on the stipular and leaf margins. The colleters predominantly secrete mucilages while the secretory trichomes secrete lipids and terpenes, both via cuticle rupture. The secretory activity of colleters is predominant in the leaf primordia, holding leaflets together and protecting meristems and leaves from desiccation, while the secretory trichomes maintain their secretory activity at different stages of leaf development, protecting different regions of the leaf against pathogens and herbivores.


Assuntos
Rosa , Folhas de Planta/química , Microscopia Eletrônica de Varredura , Meristema , Tricomas
2.
Eval Rev ; 29(6): 576-90, 2005 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-16244053

RESUMO

This study investigated the effects of introducing a family planning counseling model at clinics of Peru's Ministry of Health. Providers trained in the model presented greater quality of care and longer counseling sessions than did controls. The main effects, however, were misleading. Nearly all of the quality improvements were contributed by 37% of the trained providers; they had already been better performers at the pretest and complied with the new counseling model's requirement of job aid use at the posttest. The recognition that a majority of trained providers did not profit from training posed a challenge that led to improvements in the model. Training x Trainee Interactions should be explored in evaluations.


Assuntos
Aconselhamento/educação , Serviços de Planejamento Familiar/educação , Capacitação em Serviço , Qualidade da Assistência à Saúde , Estudos de Casos e Controles , Complacência (Medida de Distensibilidade) , Aconselhamento/métodos , Aconselhamento/normas , Serviços de Planejamento Familiar/métodos , Serviços de Planejamento Familiar/normas , Humanos , Relações Interpessoais , Assistência Centrada no Paciente , Peru , Relações Profissional-Paciente , Avaliação de Programas e Projetos de Saúde , Administração em Saúde Pública
3.
CES med ; 13(1): 83-86, ene.-jun. 1999.
Artigo em Espanhol | LILACS | ID: lil-468846

RESUMO

Con el propósito de conocer los principales problemas de salud del Municipio de Briceño (Antioquia) en la actualidad, brindar alternativas de solución a estos problemas y contar con una herramienta para controlar la evolución de los problemas identificados y el impacto de las decisiones que se tomen para enfrentarlos, se realizó el presente diagnostico de la situación de salud y la propuesta de reorganización de los servicios de salud de este municipio.


Assuntos
Serviços de Saúde Comunitária , Saúde Pública , Condições Sociais , Serviços de Saúde
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