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Background: A single, 200-mg iron injection for newborn pigs is a common practice in swine production. It is required to provide sufficient iron for newborn pigs while avoiding the potential risk of excessive amount of iron causing oxidative stress. Objective: To evaluate the quantity and timing of a single or second iron injection into suckling piglets on growth performance and hematocrit levels. Methods: A total of 24 piglets from four litters were used in each experiment (3). Treatments were: Experiment 1- 1) Control: 150 mg iron injection at d 1-3 of age, 2) Iron14: additional 100 mg iron injection at 14 d before weaning, and 3) Iron7: additional 100 mg iron injection at 7 d before weaning; Experiment 2- 1) Control: 100 mg iron injection at d 1-3 of age, 2) Iron100/100: 100 mg iron at d 1-3 of age and 9 d after the first injection, and 3) Iron200: 200 mg iron injection at d 1-3 of age; and Experiment 3 (at d 3-4 of age)- 1) Fe100: 100 mg iron injection, 2) Fe200: 200 mg iron injection, and 3) BW200: 125 mg iron injection/kg body weight. Pigs were weaned at d 25-28 of age. Growth performance and hematocrit levels were measured until d 13-14 postweaning. Results: In Experiment 1, the Iron14 treatment had a greater final body weight than the control treatment (p=0.07). Hematocrit levels were greater in the Iron14 (p=0.10) and Iron7 (p<0.05) treatments than in the control treatment at d 14 postweaning. In Experiment 2, average daily gain in the postweaning period was greater in the Iron100/100 treatment than in the control (p<0.05) and Iron200 (p=0.08) treatments. Hematocrit levels in the Iron200 treatment were greater than those in the control treatment (p<0.05) at d 13 postweaning. In Experiment 3, there was no difference in growth performance, but the BW200 treatment increased hematocrit levels to a greater degree than the Fe200 treatment (p<0.10). Conclusion: An additional iron injection earlier and a split iron injection to newborn pigs could benefit postweaning growth, but not by body weight-based iron injection. Hematocrit levels increase with a greater dose of iron injected although the magnitude varies depending on injection strategies. [ABSTRACT FROM AUTHOR]

Objective: Military Police officers of Rio de Janeiro's State have been considered the most lethal security forces in Brazil, corresponding to 52.35% of deaths in policing actions. The main aim of this study was to identify occupational stress among military police officers in Rio de Janeiro State and its relationship with the psychosocial environment, sleep quality, and daytime sleepiness., Methods: Two hundred and forty-two military policemen, divided into two groups (elite and non-elite), were evaluated occupational stress by the Lipp's Stress Symptoms Inventory (LSSI), daytime sleepiness (DS) by the Epworth Sleepiness Scale and sleep quality (SQ) by the Pitsburgh Sleep Quality Index., Results: Military police officers (entire sample) showed dissatisfaction related to psychological support from the military institution (p = 0.004), about the inefficiency of the judicial system (p < 0.001) and their low popularity towards society (p = 0.009). The group of elite police officers slept significantly less (p = 0.026) and, in general, suffered more from severe daytime sleepiness, had poorer SQ and showed lower levels of occupational stress than their peers. It was possible to identify that stress can be detected, developed, and intensified in military police officers as a result of the environment in which they are exposed and this interferes significantly in sleep and daytime sleepiness (p < 0.05)., Conclusion: Through this study, it is hoped that measures can be implemented to enhance the work environment and thereby improve the quality of life for this military population. Furthermore, it is intended to stimulate more comprehensive and longitudinal studies, particularly inclusive of female military personnel., (© 2024 Wiley Periodicals LLC.)

Objective: To map nursing interventions that contribute to preventing posttraumatic stress in people hospitalized in the context of intensive care., Design: Scoping review according to the Joanne Briggs Institute methodology., Methods: The search was carried out in the databases PubMed, CINAHL via EBSCO, Joanna Briggs Institute Database of Systematic Reviews, COCHRANE Database of Systematic Reviews, Repositório Científico de Acesso Aberto de Portugal, Dans Easy, and Dart-Europe. Published and unpublished studies (gray literature) were considered. This review integrates articles focused on nursing interventions that contribute to preventing posttraumatic stress in people hospitalized in intensive care in English, Portuguese, and Spanish. Studies with quantitative, qualitative, or mixed designs are covered, as well as systematic reviews and guidelines. The research has 3 eligibility criteria, following the PPC mnemonic: participants (studies involving adults hospitalized in intensive care), concept (studies that address nursing interventions that prevent posttraumatic stress), and context (studies developed in any contextual settings)., Results: The present scoping review included 11 articles. Autonomous, nonpharmacologic, pharmacologic, and interdependent nursing interventions were identified, capable of contributing to prevent posttraumatic stress in people hospitalized in intensive care., Conclusion: Identifying nursing interventions that prevent posttraumatic stress in people hospitalized in intensive care allows nurses to develop care plans that include these interventions in the context of intensive care, with a view to improving the quality of nursing care provided., Implications for Clinical Practice: This scoping review demonstrated that nurses have a crucial role in the prevention of posttraumatic stress in the context of intensive care. It is intended to make nurses aware of this issue, specifically to obtain highly significant and clinically relevant results, sensitive to nursing interventions. It is hoped that this review will be the precursor of research studies, centered on evaluating the degree of effectiveness of the nursing interventions mapped in this review., (Copyright © 2025 Wolters Kluwer Health, Inc. All rights reserved.)

Polyploid varieties have been suggested as an alternative approach to promote drought tolerance in citrus crops. In this study, we compared the responses of diploid and tetraploid Sunki 'Tropical' rootstocks to water deficit when grafted onto 'Valencia' sweet orange trees and subjected to water withholding in isolation or competition experiments under potted conditions. Our results revealed that, when grown in isolation, tetraploid rootstocks took longer to show drought symptoms, but this advantage disappeared when grown in competition under the same soil moisture conditions. The differences in drought responses were mainly associated with variations in endogenous leaf levels of abscisic acid (ABA), hydrogen peroxide (H₂O₂) and carbohydrates among treatments. Overall, tetraploids were more affected by drought in individual experiments, showing higher H₂O₂ production, and in competition experiments, rapidly increasing ABA production to regulate stomatal closure and reduce water loss through transpiration. Therefore, our results highlight the crucial importance of evaluating diploid and tetraploid rootstocks under the same soil moisture conditions to better simulate field conditions, providing important insights to improve selection strategies for more resilient citrus rootstocks., (© 2024 John Wiley & Sons Ltd.)

The gall-host Eugenia uniflora (Myrtaceae) is adaptable to different light conditions, enabling leaf production and survival in both sun and shade. Leaves of E. uniflora in shaded environments have more mesophyll layers, and galls of Clinodiplosis profusa (Cecidomyiidae) are larger and wider. Based on these previous observations, this study investigated the morphogenesis of galls induced by C. profusa on leaves of E. uniflora in different light conditions, revealing if the galls have a potential for acclimation, as observed with leaves. For this purpose, we compared the anatomical, histometric, and histochemical development of leaves and galls at different stages of development in sun and shade environments. Additionally, we analyzed the cytological features of the tissues composing the mature gall walls. Cells of shade galls expanded more toward the end of the developmental phase, which may explain the larger volume found for shade galls in a previous study. However, during the mature phase, these galls showed no significant differences in tissue thickness and final cell elongation in the contrasting light conditions. In the ultrastructural analyses, mature galls showed a gradient distinguishing the outer and inner parenchyma cells. The inner parenchyma had nutritive cells, with dense cytoplasm and abundant organelles. A higher accumulation of starch grains in nutritive cells, with evidence of hydrolysis of starch grains detected in the innermost layers leads to the accumulation of reducing sugars, which, with the presence of plastoglobules and protein bodies, are important mechanisms of oxidative stress dissipation in the cells in contact with the gall inducer., Competing Interests: Declarations. Conflicts of interest: The authors declare no competing interests., (© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Austria, part of Springer Nature.)

Serotonin (5-HT) has long been involved in response to stress and its effect may be, in part, mediated by 5-HT1a and 5-HT7 receptor subtypes in different brain structures. Both pre- and post-synaptic activation of 5-HT1a receptor, respectively, in the rat median raphe nucleus (MnRN) and hippocampus, lead to adaptation to acute inescapable stressors such as restraint and forced swim. 5-HT7 receptor (5HT7r), a stimulatory G-protein coupled receptor, has also been investigated as a possible candidate for mediating stress response. In the MnRN, activation of 5-HT7r has antidepressant effects, while in the hippocampus, 5HT7r mRNA expression is increased after exposure to restraint stress, but the functional significance of these receptors remains to be determined. Therefore, the aim of this study was to investigate whether blockade of hippocampal 5HT7r would prevent and/or attenuate the behavioral effects of stress. Male adult Wistar rats with bilateral cannulas aimed at the dorsal hippocampus were restrained for 2 h and tested in the elevated plus maze (EPM) 24 h later. SB 258741 (3 nmoles/0.5 μL/side; selective 5HT7r antagonist) was administered bilateraly into the hippocampus according to the experimental protocol: immediately before or after stress, or 24 h after it (immediately before the test). In a second experiment, rats were exposed to 15 min. of forced swim, and tested 24 h later. Intra-hippocampal treatment was performed as described for the restraint stress protocol. We found that blockade of hippocampal 5-HT7r immediately after, but not before, the exposure to restraint or forced swim attenuated stress-induced behavioral changes. Similar results were obtained when SB was administered before the test in previously stressed rats. Our data suggest that activation of hippocampal 5-HT7r is crucial for the consolidation and retrieval of aversive stimulus-related memories, such as those caused by a stressful experience, probably through mechanisms involving stress-induced changes in 5-HT7r expression., (© 2024 Wiley Periodicals LLC.)