Your search

PURPOSE OF REVIEW: The regulation of blood pressure is conventionally conceptualised into the product of "circulating blood volume" and "vasoconstriction components". Over the last few years, however, demonstration of tissue sodium storage challenged this dichotomous view. RECENT FINDINGS: We review the available evidence pertaining to this phenomenon and the early association made with blood pressure; we discuss open questions regarding its originally proposed hypertonic nature, recently challenged by the suggestion of a systemic, isotonic, water paralleled accumulation that mirrors absolute or relative extracellular volume expansion; we present the established and speculate on the putative implications of this extravascular sodium excess, in either volume-associated or -independent form, on blood pressure regulation; finally, we highlight the prevalence of high tissue sodium in cardiovascular, metabolic and inflammatory conditions other than hypertension. We conclude on approaches to reduce sodium excess and on the potential of emerging imaging technologies in hypertension and other conditions.

Volume overload, defined as excess total body sodium and water with expansion of extracellular fluid volume, characterizes common disorders such as congestive heart failure, end-stage liver disease, chronic kidney disease, and nephrotic syndrome. Diuretics are the cornerstone of therapy for volume overload and comprise several classes whose mechanisms of action, pharmacokinetics, indications, and adverse effects are essential principles of nephrology. Loop diuretics are typically the first-line treatment in the management of hypervolemia, with additional drug classes indicated in cases of diuretic resistance and electrolyte or acid-base disorders. Separately, clinical trials highlight improved outcomes in some states of volume overload, such as loop diuretics and sodium/glucose cotransporter 2 inhibitors in patients with congestive heart failure. Resistance to diuretics is a frequent, multifactorial clinical challenge that requires creative and physiology-based solutions. In this installment of AJKD's Core Curriculum in Nephrology, we discuss the pharmacology and therapeutic use of diuretics in states of volume overload and strategies to overcome diuretic resistance.

El lipedema es un trastorno crónico que se presenta en mujeres durante la pubertad u otros momentos de cambios hormonales como en el embarazo o la menopausia.  Es caracterizado por una obesidad desproporcionada de las extremidades, especialmente en caderas y piernas, asociado a hematomas con mínimo trauma y dolor espontáneo o inducido por presión. Usualmente es mal diagnoticado e infratratado y suele confundirse con otras enfermedades como la obesidad y linfedema. Su causa aún se sigue estudiando, existen hipótesis sobre su origen poligenético regulado por los estrógenos, por el inicio de la enfermedad en etapas de cambio hormonal y debido a que se presenta mayormente en mujeres. Los tratamiento para el lipedema se basa en seis pilares: 1) Fisioterapia-ejercicios, 2) Terapia compresiva, 3) Control de peso, 4) Liposucción, 5) Terapia psicosocial-6) Automanejo.

Lymphatic drainage is the main form of therapy for lymphedema, as it affects the pathophysiology of this clinical condition. The two main objectives of lymphatic drainage are the formation and drainage of lymph. In recent years, Godoy & Godoy developed a novel concept of mechanical lymphatic drainage involving a device denominated RAGodoy®, which performs passive exercises of the lower and upper limbs as a form of lymphatic drainage. The aim of the present study was to address the concept of this therapy as well as perform a literature review on its forms of use and the results obtained. All studies analyzed show that this technique used as monotherapy enables the treatment of lymphedema, but superior results are achieved when combined with compression mechanisms.

In daily practice, medical history and physical examination are commonly coupled with anthropometric measurements for the diagnosis and management of patients with lymphatic diseases. Herein, considering the current progress of ultrasound imaging in accurately assessing the superficial soft tissues of the human body; it is noteworthy that ultrasound examination has the potential to augment the diagnostic process. In this sense/report, briefly revisiting the most common clinical maneuvers described in the pertinent literature, the authors try to match them with possible (static and dynamic) sonographic assessment techniques to exemplify/propose an 'ultrasound-guided' physical examination for different tissues in the evaluation of lymphedema.

Left ventricular (LV) twist is defined as the wringing motion of the LV around its long-axis during systole generated by rotation of the LV apex in a counterclockwise direction, as viewed from the apex, while the LV base moves in a clockwise direction. In several cases, the LV apex and base move in the same direction during ejection demonstrating a special condition called as LV 'rigid body rotation'. The present review aimed to summarize our knowledge about this rare but not fully understood entity demonstrating its theoretic pathophysiologic background, clinical significance, associated diseases, and reversibility based on available literature.

This book is written as a guide for patients suffering from lipedema. Known as a common, painful fat distribution disorder characterised by a disproportional fat accumulation, lipedema represents an unmet medical need where scientific evidence on both pathophysiology and its treatment is still lacking. As the number of affected patients is increasing, besides striving to map the conundrum of clinical signs and relate these to their underlying mechanisms, developing standardised approaches addressing both fat mass reduction and body contouring are key issues able to warrant therapeutic success. In this book, our intention was to look at this complex disease from all its actual perspectives and provide a concise summary of the actual state of knowledge for all those affected. After looking into the most actual data on the aetiology, pathophysiology and course of the disease, the book then focuses on our complex treatment protocols wherecurrent conservative and surgical treatment options are systematically analyzed, considering their long-term chances of success as well as associated risks and side effects. We propose a three step treatment approach. 1st step initiates with weight control and addresses obesity, if present. 2nd step is an individual liposuction therapy plan to treat all lipedema areas, and more. 3rd step includes body contouring surgery, only in patients with massive skin laxity after liposuction and / or massive weight loss. Table of Contents Front Matter Pages i-xviii The Lipedema Zaher Jandali, Benedikt Merwart, Lucian Jiga Pages 1-68 The Lymphedema Corrado Campisi, Lucian Jiga, Zaher Jandali Pages 69-94 Treatment of Lipedema Zaher Jandali, Benedikt Merwart, Ralf Weise, Angel Pecorelli Capozzi, Lucian Jiga Pages 95-176 Body Contouring Surgery After Extensive Liposuction and Weight Loss Zaher Jandali, Benedikt Merwart, Lucian Jiga Pages 177-198 Additional Information about Treatment Zaher Jandali, Benedikt Merwart, Lucian Jiga Pages 199-204 Back Matter Pages 205-207

This chapter sets out the most promising modern directions of research in the field of magnetic resonance imaging. These include multinuclear studies aimed at the exploration of magnetic resonance (MR) image contrast induced by exogeneous (fluorine-19, hyperpolarized noble gases) and “built-in” (phosphorus-31, sodium-23) contrast agents for potential clinical benefits. The chapter covers electrodynamic elements of MR scanners that increase signal-to-noise ratio in low-field magnetic resonance imaging (MRI), hyperpolarization techniques that allow several orders of magnitude improved sensitivity in low-field MRI, as well as MRI methods to study dynamics of pharmaceuticals introduced into the body. Special attention is given to MRI methods based upon magnetization transfer aimed at the detection of myelination defects of axons in the brain and functional MRI characterizing brain dynamic response to external stimuli.

Fluid compartments in the human body are divided between the intracellular and extracellular spaces. The extracellular space constitutes about one-third of total body water, which is further divided into intravascular plasma volume (25%) and the extravascular interstitial space (75%). The fluid balance between these compartments is maintained by hydrostatic pressures and oncotic pressures described by Starling. The other two factors that play an important role in fluid balance are vessel wall permeability and the lymphatic system. The lymphatic system collects fluid and filtered proteins from the interstitial space and returns that back to the vasculature. Any disturbance in this delicate homeostasis that results in net filtration out of the vascular space or impaired return of fluid by lymphatics leads to the accumulation of fluid in the interstitial space that is called edema. Edema can affect any part of the body and ranges from local swelling to full-blown anasarca, depending on the underlying pathology. A classic example of local swelling is an insect bite. An example of anasarca can be seen in nephrotic syndrome.[1] Edema, other than localized edema, does not become clinically apparent until the interstitial volume has increased by 2.5 to 3 liters because the tissues constituting the interstitium can easily accommodate several liters of fluid. Therefore, a patient's weight may increase by nearly 10% before pitting edema is evident.

The thigh lift procedure is one of the 5 most requested procedures associated with skin excess from massive weight loss (MWL). The procedure also has the highest reported complication rate amongst MWL procedures. The complication rate is most commonly associated with regional blood flow, higher bacterial involvement associated with proximity to the perineal region and poor-quality dermal thickness to support closure. Technical aspects of ideal management of the region include proper use of lipoplasty, skin excision, multi-layer tissue approximation and suspension. The following chapter reviews the regional anatomy, analysis, and the range of surgical techniques associated with this challenging procedure.

One of the most common breast malformations is tuberous breast anomaly. Being prevalent in adolescence, few patients know about this condition and the options of treatment.

<span lang="ES-TRAD">Este artículo hace una revisión de la literatura científica que se ha producido recientemente en torno a la obesidad en México, y analiza cómo la perspectiva de género ha sido abordada (o no) en los diferentes trabajos, así como la necesidad de incluirla como una herramienta interdisciplinaria en el estudio de la alimentación. Primero, se presentan diversas maneras de enfocar el tema de la obesidad en los textos revisados; se enfatiza en las cifras obtenidas y se ubica a la obesidad como una problemática social, económica y de salud pública donde se mezcla la influencia de conductas alimentarias, dinámicas familiares y políticas públicas. Segundo, se revisa cómo algunos estudios vinculan el tema de la obesidad con una perspectiva de género y se delinean las contribuciones que este enfoque podría aportar, evocando cuestiones como la discriminación y los movimientos feministas gordos en la conformación de la identidad cultural femenina actual.</span>

Adipocytes express various enzymes, such as aldo-keto reductases (AKR1C), 11β-hydroxysteroid dehydrogenase (11β-HSD), aromatase, 5α-reductases, 3β-HSD, and 17β-HSDs involved in steroid hormone metabolism in adipose tissues. Increased activity of AKR1C enzymes and their expression in mature adipocytes might indicate the association of these enzymes with subcutaneous adipose tissue deposition. The inactivation of androgens by AKR1C enzymes increases adipogenesis and fat mass, particularly subcutaneous fat. AKR1C also causes reduction of estrone, a weak estrogen, to produce 17β-estradiol, a potent estrogen and, in addition, it plays a role in progesterone metabolism. Functional impairments of adipose tissue and imbalance of steroid biosynthesis could lead to metabolic disturbances. In this review, we will focus on the enzymes involved in steroid metabolism and fat tissue deposition.

Dercum's disease (DD), also described as adiposis dolorosa, is a poorly understood and rare adipose tissue disorder involving obesity and painful adipose tissue masses. Patients may have associated bruising and constitutional symptoms such as fatigue, difficulty concentrating, and sleep disturbance. DD was initially described in 1888 by Francis Xavier Dercum, and was classified into four subtypes, including generalized diffuse, generalized nodular, localized nodular, and juxta-articular subtypes. While this disease has been described for more than 130 years, its etiology and treatment remain elusive. We describe a case of a patient with DD who presented to Ochsner Medical Center, New Orleans, LA, for evaluation of treatment options. We review current knowledge on this rare disease and data on modern treatment methods.

Human aldo-keto reductase family 1C1 (AKR1C1) is an important enzyme involved in human hormone metabolism, which is mainly responsible for the metabolism of progesterone in the human body. AKR1C1 is highly expressed and has an important relationship with the occurrence and development of various diseases, especially some cancers related to hormone metabolism. Nowadays, many inhibitors against AKR1C1 have been discovered, including some synthetic compounds and natural products, which have certain inhibitory activity against AKR1C1 at the target level. Here we briefly reviewed the physiological and pathological functions of AKR1C1 and the relationship with the disease, and then summarized the development of AKR1C1 inhibitors, elucidated the interaction between inhibitors and AKR1C1 through molecular docking results and existing co-crystal structures. Finally, we discussed the design ideals of selective AKR1C1 inhibitors from the perspective of AKR1C1 structure, discussed the prospects of AKR1C1 in the treatment of human diseases in terms of biomarkers, pre-receptor regulation and single nucleotide polymorphisms, aiming to provide new ideas for drug research targeting AKR1C1.