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Laura Navarrete,1,2 Ma Asunción Lara,1 Shoshana Berenzon,1 Jazmin Mora-Rios1 1Directorate of Epidemiological and Psychosocial Research, National Institute of Psychiatry “Ramón de la Fuente Muñiz”, Mexico City, Mexico; 2Doctorate Program in Medical, Odontology and Health Sciences of the National Autonomous, University of Mexico, Mexico City, MexicoCorrespondence: Ma Asunción Lara, Tel +52 55 4160 5170, Fax +52 55 5513 3446, Email laracan@imp.edu.mxBackground: Perinatal depression is a common mental disorder regarded as a severe public health problem. Studies have shown that incorporating mental health care into primary health services that provide pregnancy care makes it easier for women to seek help for depressive symptoms. In this context, the following question is of interest: How prepared are primary health services in Mexico City that provide pregnancy and postpartum care to treat perinatal depression? This article seeks to explore the perceptions and knowledge of perinatal depression in health professionals and analyze the barriers to its care at primary care centers in Mexico City.Methods: An exploratory study with a qualitative approach was conducted. Doctors, nurses, social workers who provide maternal and childcare, mental health personnel, and the directors of four centers were interviewed. Interviews were audio-recorded and transcribed for thematic analysis.Results: Most primary care personnel are unaware of the Official Standard that recommends providing maternal mental health care during the perinatal period. There is no initiative for its incorporation into routine care. A significant barrier to its implementation is health professionals’ biased, stereotyped perception of perinatal depression, motherhood, and the role of women. Other barriers include the workload of health professionals, the division of care between professionals, and the lack of communication between the latter. Women with psychological symptoms are not referred to mental health staff in a timely manner. Social workers are in closer contact with women and are more willing to address their emotional distress.Conclusion: Maternal mental health care, contingent on pregnancy, childbirth, and puerperium care at primary care centers is currently not possible due to the lack of knowledge, barriers, and directors’ dependence on hospital management decisions.Keywords: maternal mental health, perinatal depression, primary health care

Resistance to both barley yellow dwarf virus (BYDV) and cereal yellow dwarf virus (CYDV) has been demonstrated in wheat genetic stocks with Thinopyrum intennedium chromatin. A number of resistance-bearing translocations have been reported on chromosome arm 7DL from two independent Th. intermedium sources; one source is the addition line Ll and the other is the spontaneous substitution line P29. Another source of resistance in wheat cytogenetic stocks is available as a 2Ai(2D) substitution line. We used a set of 38 molecular markers and the available deletion stocks to compare the size of the 7DL translocations more comprehensively than has been done previously. We also compared the efficacy of BYDV resistance of the various genetic stocks both before and after transfer to a common genetic background. TC14 was confirmed as carrying the smallest translocation, replacing about 20% of the distal end of 7DL. TO and TC10 had 90% of the chromosome arm replaced by Th. intermedium chromatin; the proximal 10% corresponded to wheat chromatin. YW642 appeared to have the whole 7DL replaced by Th. intennedium chromatin, as confirmed by the co-dominant marker cfd68 mapping on the bin nearest the centromere. Translocation line P961341 had bins 3, 7, and 8 replaced by Th. intermedium chromatin, making this the second smallest translocation with BYDV and CYDV resistance. The translocation sizes reported here differ from some of the previous estimates. The translocated Th. intennedium segments appeared to be bigger than the replaced wheat 7DL fragments. All the resistances derived from the Ll and P29 group 7 chromosomes and the 2Ai#2 chromosome were effective in reducing the number of infected plants and the mean virus titre, regardless of the background. Some evidence is discussed suggesting the long arm of the Th. intermedium group 7 chromosome 7Ai#1 carries two resistances, the distal Bdv2 and a proximal second gene. Key words: Luteovirus, intermediate wheatgrass, CYDV, alien translocations, EST derived markers. La resistance au virus de la jaunisse nanisante de l'orge (BYDV) et au virus de la jaunisse nanisante des cereales (CYDV) a ete documentee chez des lignees de ble possedant de la chromatine provenant du Th. intennedium. Plusieurs translocations conferant la resistance ont ete rapportees sur le chromosome 7DL en provenance de deux sources independantes du Th. intennedium. L'une de celles-ci est la lignee d'addition Ll et l'autre est la substitution spontanee P29. Une autre source de resistance au sein des stocks genetiques du ble est disponible sous la forme d'une substitution 2Ai(2D). Les auteurs ont employe 38 marqueurs moleculaires et les deletions disponibles pour comparer la taille des translocations 7DL de maniere plus precise que cela n'avait ete fait anterieurement. Les auteurs ont egalement compare l'efficacite de la resistance au BYDV chez les diverses lignees avant et apres leur introduction dans un meme fond genetique. TC14 a ete confirmee comme etant la translocation la plus petite puisqu'elle remplace environ 20 % de l'extremite distale de 7DL. Chez TC5 et TC10, 90 % du bras chromosomique a ete remplace par la chromatine du Th. intermedium; le 10 % proximal etant constitue de chromatine du ble. Au sein de YW642, la totalite de 7DL semble avoir ete remplacee par la chromatine du Th. intermedium tel que confirme par le marqueur codominant cfd68, lequel est situe dans le segment le plus rapproche du centromere. Dans la translocation P961341, les intervalles (<< bins >>) 3, 7 et 8 etaient remplaces par la chromatine du Th. intermedium, ce qui en fait la seconde plus petite translocation conferant la resistance au BYDV et au CYDV. Les tailles des translocations rapportees dans ce travail different de certaines des estimations anterieures. Les segments provenant du Th. intermedium semblent plus grands que les regions remplacees au sein du bras 7DL du ble. Toutes les resistances examinees, derivees des chromosomes du groupe 7 chez Ll et P29 ainsi que du chromosome 2Ai#2, permettaient de reduire le nombre de plantes infectees et la charge virale moyenne sans egard au fond genetique. Les auteurs discutent certaines evidences suggerant que le bras long du chromosome de groupe 7 chez le Th. intennedium (7Ai#1) porterait deux resistances, le gene distal Bdv2 et un second gene proximal. Mots-cles : Luteovirus, agropyron intermediaire, CYDV, translocations interspecifiques, marqueurs derives d'EST. [Traduit par la Redaction], Introduction The cereal diseases caused by barley yellow dwarf viruses are now known to be caused by two related species, Barley yellow dwarf virus (BYDV, genus Luteovirus, family Luteoviridae) and [...]

The dependence of the structural, magnetic, electrical and optical properties of epitaxially grown ilmenite-hematite (IH) films on their oxygen stoichiometry is described. The IH films have shown both the semiconducting transport and ferrimagnetic properties.

Ilmenite-hematite [[(FeTi[O.sub.3]).sub.1-x]-[([Fe.sub.3][O.sub.3]).sub.x]] is a solid solution system displaying intrinsic ferromagnetic and semiconductor properties. Magnetic force microscopy is used for detecting the domain structure in the thin ilmenite-hematite films.

The solid solution system ilmenite-hematite [(FeTiO3)1-x–(Fe2O3)x] is a potential candidate for applications in spintronics due to its intrinsic ferrimagnetic and semiconducting properties. Epitaxial ilmenite-hematite films with x=0.33, which have the highest room temperature magnetic moment, were grown on α-Al2O3 (0001) substrates using pulsed laser deposition technique with varying oxygen partial pressure in the ambient gas. Structural, magnetic, electrical, and optical properties are found to be largely dependent on the oxygen content of the films which is controlled by substrate temperature and ambient gas composition. The highest crystalline and magnetic ordering and the lowest resistivity values could be obtained for growth at high temperatures and under low oxygen pressure. A narrowing of the band gap (to around 2.4 eV) was observed for films grown under high oxygen pressure in comparison with films grown in vacuum or argon (around 3.3 eV). [ABSTRACT FROM AUTHOR]