Experiencia Emocional y sus Fundamentos Biológicos: Mejorando el Estado Emocional a Través del Tono Vagal / Emotional Experience and its Biological Underpinnings: Improving Emotional Well-Being Through Vagal Tone

El objetivo principal de este trabajo es el de recopilar conocimiento sobre la base de los fundamentos biológicosde la experiencia emocional y sobre la posibilidad de mejora del bienestar emocional a través del aumento deltono vagal. El tono vagal es considerado un indicador de la experiencia emocional. Y la experiencia emocional esconcebida como un proceso dinámico donde interaccionan la propia reacción emocional y la capacidad de regularla reacción emocional. Mediante las intervenciones en biorretroalimentación de la variabilidad de la frecuenciacardíaca centradas en la respiración y mediante la neuroestimulación transauricular del nervio vago es posibleaumentar el tono vagal de forma que se mejora el estado emocional.(AU)

The main objective of this study is to present knowledge on the biological underpinnings of emotional experience andon the possibility of improving emotional well-being by increasing vagal tone. Vagal tone is considered an indicatorof emotional experience. An emotional experience is conceived as a dynamic process in which an emotional reactionand the ability to regulate the emotional reaction interact. Through heart rate variability biofeedback interventionsfocusing on breathing and through transauricular vagus nerve stimulation, it is possible to increase the vagal tone ina way that improves the emotional state.(AU)

Synchronous bilateral breast cancer treated with a 3-week hypofractionated radiotherapy schedule: clinical and dosimetric outcomes

Background and purpose Synchronous bilateral breast cancer (SBBC) accounts for 1–3.5% of breast cancer patients. The aim of this study was to evaluate dosimetric issues, clinical outcomes, and acute toxicities for SBBC patients receiving synchronous bilateral hypofractionated radiotherapy (SBHRT) and to compare them with patients treated with synchronous bilateral normofractionated RT schedule (SBNRT). Materials and methods From April 2016 to March 2020, 39 SBBC patients were referred to our institution. Patients were divided according to their prescription dose: Group A: 50 Gy/25fx (fractions), B: 60–64 Gy/25fx, C: 40.05 Gy/15fx; D: 48 Gy/15fx. Toxicity was evaluated using Common Terminology Criteria for Adverse Events (CTCAE)v.5.0. Results 34 patients were finally evaluated. Median follow-up was 24 months for NF schedule and 9 months for HF schedule. In the HF schedule, no acute side-effects > G2 were observed and no dermatitis was reported in 6th month´s assessments. 95% of patients have no evidence of disease and only 1 patient presented local relapse in the first mammography after RT. No distant failures or deaths were observed. Regarding dosimetric issues, the inter-patient average Dmean for the heart was: Group A: 5.0 Gy (4.6–5.5), Group B: 4.4 Gy (4.1–5.4), Group C: 4.8 Gy (4.5–5.1) and Group D: 5.3 Gy (4.4–5.6). For the lungs, the inter-patient average Dmean was: Group A: 10.8 Gy (9.8–12.2), Group B: 11.5 Gy (11.3–12), Group C: 9.8 Gy (9.3–10.5) and Group D: 10.5 Gy (10–11.3). Conclusions This is the first study reporting the safety, feasibility, and tolerability of 40.05 Gy/15fx over 3 weeks for the treatment of SBBC patients. Further study with larger accrual is mandatory (AU)

Amiloidosis cardíaca por transtiretina / Transthyretin amyloid cardiomyopathy

La amiloidosis cardíaca por transtiretina (TTR) es una enfermedad infiltrativa, grave y progresiva, que se produce por el depósito de TTR en el corazón. Puede deberse a una alteración genética en su forma hereditaria (ATTRv) o a consecuencia de un proceso degenerativo asociado a la edad (ATTRwt). Gracias a los avances en técnicas de imagen y a la posibilidad de realizar un diagnóstico no invasivo hoy conocemos que la ATTR es una enfermedad más frecuente de lo tradicionalmente considerado y que es particularmente relevante en pacientes mayores de 65 años con insuficiencia cardíaca o con estenosis aórtica. Con la aparición de opciones de tratamiento capaces de modificar la historia natural de la ATTR se hace necesario que los clínicos estén familiarizados con el proceso diagnóstico y el tratamiento de esta enfermedad. En esta revisión se repasará el espectro clínico de presentación de la ATTR, su diagnóstico y su tratamiento. (AU)

Transthyretin (TTR) cardiac amyloidosis is a severe, progressive, infiltrative disease caused by the deposition of TTR at cardiac level. It may be due to a genetic alteration in its hereditary form (ATTRv) or as a consequence of an age-related degenerative process (ATTRwt). Thanks to advances in imaging techniques and the possibility of achieving a non-invasive diagnosis, we now know that ATTR is more frequent than traditionally considered and that it is particularly relevant in patients over 65 years with heart failure or with aortic stenosis. With the appearance of several treatment options capable of modifying the natural history of ATTR, it is necessary for clinicians to be familiar with the diagnostic process and treatment of this disease. This review will cover the clinical spectrum of presentation of ATTR, its diagnosis and treatment. (AU)

Un «corazón» en el corazón: agenesia parcial del pericardio / A "heart" within a heart: partial absence of the pericardium

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Retos clínicos en pacientes con enfermedad pulmonar obstructiva crónica que han sufrido una infección por SARS-CoV-2 / Clinical challenges to face in chronic obstructive pulmonary disease patients who suffered SARS-CoV-2 infection

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Corazón y riñón en la diabetes: efectos de los glucosúricos / The heart and kidney in diabetes: Heart and kidney in diabetes

El riñón del diabético presenta un exceso de expresión y actividad del trasportador SGLT2 del túbulo proximal. Esta situación aumenta la reabsorción renal de Na y glucosa, y reduce la oferta distal de los mismos. Además de los efectos metabólicos sobre el medio interno de este exceso de glucosa reabsorbida, el túbulo renal se ve sometido a un estrés glicosilativo capaz de activar localmente tanto apoptosis como inflamasoma. El resultado es la pérdida progresiva de unidades nefronales, la activación de la transición epitelio mensangial y del depósito de colágeno. Se produce la activación de la señalización de insulina por la vía de la MAP kinasa y la resistencia a los efectos metabólicos de la insulina. Simultáneamente se superpone una vasodilatación aferente por la hiperglucemia, una inhibición del feed-back túbulo-glomerular por la reducción en la oferta distal de fluido, la desdiferenciación de los podocitos y la reducción en su número, estos últimos efectos debidos a la resistencia a la insulina. El resultado es un daño renal autoalimentado, con hiperpresión intraglomerular, desdiferenciación podocitaria, apoptosis tubular y activación local y a distancia del inflamasoma. Todos estos efectos son susceptibles de corregirse total o parcialmente al inhibir el trasporte de glucosa a través de los SGLT2

The diabetic kidney presents excess expression and activity of the SGLT2 transporter of the proximal tubule. This situation increases the renal reabsorption of Na and glucose and reduces their distal supply. In addition to the metabolic effects on the internal environment of this excess reabsorbed glucose, the renal tubule is subjected to glycosylated stress capable of locally activating both apoptosis and inflammasome. The result is a progressive loss of nephron units, activation of transition of mesangial epithelium and collagen deposition. Activation of insulin signalling by the MAP kinase pathway and resistance to the metabolic effects of insulin take place. This is simultaneously combined with afferent vasodilation due to hyperglycaemia, tubuloglomerular feedback inhibition due to reduced distal fluid supply, podocyte dedifferentiation and reduction in their number, the latter effects being due to insulin resistance. The result is self-feeding renal damage, with intraglomerular hyper-pressure, podocyte dedifferentiation, tubular apoptosis, and local and distant activation of inflammasome. All these effects are susceptible to be totally or partially corrected by inhibiting glucose transport via the SGLT transporters

Effect of methanol seed extract of Buchholzia coriacea on the leftventricle myocardium ofzidovudine-induced cardiotoxic Wistar rats

The degenerative and inflammatory changes were reported in cardiac tissues of rats exposed to zidovudine (ZDV). This study was designed to ex-amine the histochemical changes in the myocardi-um of adult Wistar rats exposed to ZDV and ad-ministered with methanolic extract of Buchholzia coriacea (MEBC) seed. Forty-eight healthy Wistar rats weighing 150-155 g. were randomly assigned into eight groups of six rats each. Group A served as control and received distilled water; group B received 100 mg/kg of ZDV; group C received 600 mg/kg of MEBC; group D received 100 mg/kg of vitamin C; group E received 100 mg/kg of vitamin C and ZDV; group F received 150 mg/kg of MEBC and 100 mg/kg of ZDV; group G received 300 mg/kg of MEBC and 100 mg/kg of ZDV, and group H received 600 mg/kg of MEBC and 100 mg/kg of ZDV. Treatment lasted for a period of 56 days. Blood was collected separately into clean capped plain tubes for biochemical parameters. Heartswere excised, fixed in 10% formal saline and pro-cessed for histology. ZDV induced a significant increase in the serum concentration of Nitric Oxide (NO) and Cardiac Troponin I (cTnI) in the ZDV-alone group when compared to control (p < 0.05). Also, there was reduction in activity of the Glutathi-one reductase (GR) enzyme in the ZDV-alone group relative to control (P = 0.0006, F = 7.0). Distor-tion of the cross banding pattern of cardiac muscle fibres in ZDV-alone group was manifested. These effects were reversed by administration of MEBC compared to vitamin C group

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