scholarly journals THE GHRELIN SYSTEM; BEYOND THE ROLE IN ENERGY HOMEOSTASIS

Author(s):  
Ljiljana Šaranac ◽  
Zoran Gucev

The fascinating story of ghrelin started more than 30 years ago with the discovery of synthetic (non-natural) growth hormone (GH) releasing peptides. Scientists were searching for a novel peptide, ligand of orphan GH secretagogue receptor. The discovery of ghrelin is a typical example of reverse pharmacology. The new peptide quickly attracted a lot of attention by its pleiotropic nature, and provoked a burst of new enthusiasm among scientists and clinicians. Ghrelin is mainly produced in the stomach from a distinct group of endocrine cells located within the gastric oxyntic mucosa. It acts as hunger signal and long-term body weight regulator. But, ghrelin is much more than just a natural orexigenic factor and GH secretagogue. It exerts major peripheral endocrine and non-endocrine actions, and it has a role in learning and memory, glucose homeostasis, immunity, cardio protection, fertility and addiction. Exploring the actions of ghrelin and ghrelin agonists and receptor antagonists or reverse agonists could establish new treatment options for so far incurable diseases.

VASA ◽  
2015 ◽  
Vol 44 (1) ◽  
pp. 5-22 ◽  
Author(s):  
Robert K. Clemens ◽  
Thomas Pfammatter ◽  
Thomas O. Meier ◽  
Ahmad I. Alomari ◽  
Beatrice R. Amann-Vesti

Vascular malformations are congenital anomalies that can affect each part of the vasculature. Combined forms are common and they are often part of complex syndromes. Most malformations are diagnosed during infancy, but some get obvious only later in life. The field of vascular malformations is emerging with recently described new entities and treatments. Still, misdiagnosis is common in this field, leading to nosologic confusion and wrong treatment. Clinical evaluation and imaging are the gold standard for diagnostic confirmation. Sclerotherapy and embolization are the main treatment techniques but are also used preoperatively to reduce blood loss and shrink the lesion if surgery is planned. Despite new treatment options, especially if extensive in size or involving vulnerable structures, vascular malformations are still considered chronic diseases and cause significant morbidity. Common understanding and agreement on terminology and a multidisciplinary approach are the basis of successful treatment and long-term support for these patients. Continuing research in the field of vascular anomalies will improve knowledge and create further treatment options.


Author(s):  
Alessandro Rambaldi ◽  
Nicholas Kröger

The indication to allogeneic stem cell transplantation has changed in the treatment strategy of chronic myeloid leukaemia (CML) and myelofibrosis (MF). The introduction of tyrosine kinase inhibitors has confined the indication to transplant only to the very few CML patients who fail the medical treatment or progress to a blastic phase of the disease. Nonetheless, a distinct group of CML patients still require allogeneic transplant that remains a curable treatment options even for these otherwise incurable patients. On the other hand, the allogeneic transplant activity for myelofibrosis is growing despite the persistent concern about the non-relapse mortality that remains significantly high in most studies and never below 20%. The availability of the new treatment option represented by JAK2 inhibitors hold promise not only for improving the quality of life but also the transplant outcomes of MF patients. However, their use poses new challenges for the most wise and appropriate selection of patients to transplant.


2020 ◽  
pp. 54-61
Author(s):  
S. A. Protsenko ◽  
E. N. Imyanitov ◽  
A. I. Semenova ◽  
D. Kh. Latipova ◽  
A. V. Novik ◽  
...  

Melanoma of the skin is one of the most aggressive malignant neoplasms. Metastatic skin melanoma has an extremely poor clinical prognosis with a high mortality rate, accounting for 80% of all deaths from skin malignancies. The approaches to the treatment of metastatic skin melanoma have been dynamically developing over the past decade. New drugs and their combinations are becoming more affordable. In connection with the advances in molecular genetics and the development of new targeted drugs, treatment outcomes have significantly improved: first of all, overall survival and the time to progression of the disease, which has set new challenges for continuing research in this area. The development of new treatment options for patients with inoperable and/or metastatic melanoma with a mutation in the BRAFV600 gene is still in high demand. Emerging data from clinical and preclinical studies suggest that synergies can be observed between inhibitors of immune checkpoints and inhibitors of BRAF and MEK. Despite the fact that inhibitors of the BRAF signaling pathway have a high frequency of objective responses, in most cases their duration is short. Inhibitors of immune checkpoints provide a longer lasting effect, but the response rate is relatively low. Combining the two types of therapy can improve survival rates over the long term. This review demonstrates the results of phase III randomized trials that have allowed to determine the current standards in the treatment of metastatic skin melanoma. We also demonstrated our own experience of using a triple combination of targeted therapy with BRAF/MEK inhibitors in combination with PD-1 inhibitors.


2018 ◽  
Vol 96 (5) ◽  
pp. 401-410
Author(s):  
A. O. Buyeverov ◽  
V. E. Syutkin ◽  
P. O. Bogomolov

Severe alcoholic hepatitis (SAH) is characterized by high both immediate and long - term mortality, caused by these patients ’ a special form of liver failure development which is acute on the background of chronic one (acute-on-chronic liver failure). Steatosis, oxidative stress, increased permeability of the intestinal wall, the formation of toxic metabolites and the cytokine cascade are considered to be the main pathogenetic elements of the SAH. The course of SAH is accompanied by the so-called liver-associated immunodeficiency, which is associated with a high risk of fatal infectious complications, causing up to А of all deaths. This variant of immunodeficiency is characterized by hyperactivation of some elements of the immune system along with suppression of the activity of others. Despite advances in the study of pathogenesis, today the only therapeutic agent affecting the survival of patients with SAH are corticosteroids. A significant improvement in prognosis in the absence of response to corticosteroid therapy can only be achieved by performing an urgent liver transplant. Currently, several new treatment options for patients with SAH are being developed. We believe that selective influence on key immunopathological processes deserves special attention.


Blood ◽  
2009 ◽  
Vol 114 (20) ◽  
pp. 4361-4368 ◽  
Author(s):  
Ravin J. Garg ◽  
Hagop Kantarjian ◽  
Susan O'Brien ◽  
Alfonso Quintás-Cardama ◽  
Stefan Faderl ◽  
...  

Abstract Responses can be achieved with dasatinib or nilotinib after failure of 2 prior tyrosine kinase inhibitors (TKIs). We report on 48 chronic myeloid leukemia patients sequentially treated with 3 TKIs: 34 with dasatinib after imatinib/nilotinib failure and 14 with nilotinib after imatinib/dasatinib failure. Before the third TKI, 25 patients were in chronic phase (CP), 10 in accelerated phase (AP), and 13 in blast phase (BP). Best response to third TKI in CP was 5 major molecular responses (MMR), 3 complete cytogenetic (CCyR), 2 partial cytogenetic (PCyR), 3 minor cytogenetic (mCyR), 6 complete hematologic responses (CHR), and 6 with no response (NR). In AP, 1 patient achieved MMR, 1 CCyR, 2 PCyR, 1 mCyR, 4 CHR, and 1 NR. In BP, 1 achieved MMR, 2 CCyR, 1 PCyR, 1 mCyR, 2 returned to CP, and 6 NR. Median CCyR duration was 16.3 months; 3 CP patients achieving CCyR had a response more than 12 months. Median failure-free survival was 20 months for patients in CP, 5 months in AP, and 3 months in BP. Use of second-generation TKI after failure to 2 TKIs may induce responses, but these are usually not durable except in some CP patients. New treatment options are needed.


2011 ◽  
Vol 2011 ◽  
pp. 1-8 ◽  
Author(s):  
Paul H. Sugarbaker

Proper indications for second-look surgery in patients with colorectal cancer have always been a controversial subject. The surgical literature suggests benefit in a reoperation, where a limited extent of cancer is discovered and then resected with negative margins. However, patients are often subjected to a negative exploratory laparotomy or an intervention that is unable to achieve an R-0 resection; in these circumstances, little or no benefit occurs. Unfortunately, an unsuccessful repeat intervention may place the patient in a worse condition, especially if morbidity occurs. This paper seeks to identify the clinical parameters of a primary colorectal cancer and a followup plan that are associated with cancer recurrence that can be definitively addressed by the second look surgery. New surgical technologies, including cytoreductive surgery with peritonectomy and perioperative intraperitoneal chemotherapy with hyperthermia, are suggested for use in this group of patients. This new management strategy used in patients with local-regional recurrence may result in a high proportion of patients converted from a second-look positive patient to a long-term survivor.


VASA ◽  
2012 ◽  
Vol 41 (3) ◽  
pp. 163-176 ◽  
Author(s):  
Weidenhagen ◽  
Bombien ◽  
Meimarakis ◽  
Geisler ◽  
A. Koeppel

Open surgical repair of lesions of the descending thoracic aorta, such as aneurysm, dissection and traumatic rupture, has been the “state-of-the-art” treatment for many decades. However, in specialized cardiovascular centers, thoracic endovascular aortic repair and hybrid aortic procedures have been implemented as novel treatment options. The current clinical results show that these procedures can be performed with low morbidity and mortality rates. However, due to a lack of randomized trials, the level of reliability of these new treatment modalities remains a matter of discussion. Clinical decision-making is generally based on the experience of the vascular center as well as on individual factors, such as life expectancy, comorbidity, aneurysm aetiology, aortic diameter and morphology. This article will review and discuss recent publications of open surgical, hybrid thoracic aortic (in case of aortic arch involvement) and endovascular repair in complex pathologies of the descending thoracic aorta.


2015 ◽  
Vol 156 (45) ◽  
pp. 1824-1833 ◽  
Author(s):  
Árpád Illés ◽  
Ádám Jóna ◽  
Zsófia Simon ◽  
Miklós Udvardy ◽  
Zsófia Miltényi

Introduction: Hodgkin lymphoma is a curable lymphoma with an 80–90% long-term survival, however, 30% of the patients develop relapse. Only half of relapsed patients can be cured with autologous stem cell transplantation. Aim: The aim of the authors was to analyze survival rates and incidence of relapses among Hodgkin lymphoma patients who were treated between January 1, 1980 and December 31, 2014. Novel therapeutic options are also summarized. Method: Retrospective analysis of data was performed. Results: A total of 715 patients were treated (382 men and 333 women; median age at the time of diagnosis was 38 years). During the studied period the frequency of relapsed patients was reduced from 24.87% to 8.04%. The numbers of autologous stem cell transplantations was increased among refracter/relapsed patients, and 75% of the patients underwent transplantation since 2000. The 5-year overall survival improved significantly (between 1980 and 1989 64.4%, between 1990 and 1999 82.4%, between 2000 and 2009 88.4%, and between 2010 and 2014 87.1%). Relapse-free survival did not change significantly. Conclusions: During the study period treatment outcomes improved. For relapsed/refractory Hodgkin lymphoma patients novel treatment options may offer better chance for cure. Orv. Hetil., 2015, 156(45), 1824–1833.


2017 ◽  
Vol 2 (1) ◽  
pp. 43
Author(s):  
Akmal Hisham ◽  
Devananthan Ilenghoven ◽  
Wan Syazli Wan Ahmad Kamal ◽  
Salina Ibrahim ◽  
Shah Jumaat Mohd Yussof

The emergence of highly active antiretroviral therapy (HAART) has revolutionized the prognosis of HIV-infected patients. However, the extended use of HAART is associated with a disfiguring complication termed lipodystrophy, a disorder of body fat maldistribution causing peripheral fat loss (lipoatrophy) and central fat accumulation (lipohypertrophy). Lipoatrophy commonly affects the face, legs, buttocks and arm, whilst lipohypertrophy frequently favours the abdomen, breast and dorsocervical region. To our knowledge, we present only the second documented case in the literature of a labia majora lipohypertrophy in a HIV-positive patient receiving long-term HAART. The severity of labial abnormality caused significant physical and functional morbidities. Labiaplasty with dermolipectomy of the labia majora and excisional lipectomy of the mons pubis was successfully performed. At a 6-month follow-up, patient had no recurrence with resolution of symptoms and resumption of normal activities of daily living (ADL).


2019 ◽  
Vol 4 (3) ◽  
pp. 141-144
Author(s):  
Evelin Szabó ◽  
Zsolt Parajkó ◽  
Diana Opincariu ◽  
Monica Chițu ◽  
Nóra Raț ◽  
...  

Abstract Atherosclerosis is the elemental precondition for any cardiovascular disease and the predominant cause of ischemic heart disease that often leads to myocardial infarction. Systemic risk factors play an important role in the starting and progression of atherosclerosis. The complexity of the disease is caused by its multifactorial origin. Besides the traditional risk factors, genetic predisposition is also a strong risk factor. Many studies have intensively researched cardioprotective drugs, which can relieve myocardial ischemia and reperfusion injury, thereby reducing infarct size. A better understanding of abnormal epigenetic pathways in the myocardial pathology may result in new treatment options. Individualized therapy based on genome sequencing is important for an effective future medical treatment. Studies based on multiomics help to better understand the pathophysiological mechanism of several diseases at a molecular level. Epigenomic, transcriptomic, proteomic, and metabolomic research may be essential in detecting the pathological phenotype of myocardial ischemia and ischemic heart failure.


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