1
|
Esteves M, Duarte M, Oliveira PA, Gil da Costa RM, Monteiro MP, Duarte JA. SKELETAL MUSCLE SENSITIVITY TO WASTING INDUCED BY UROTHELIAL CARCINOMA. Exp Oncol 2023; 45:107-119. [PMID: 37417276 DOI: 10.15407/exp-oncology.2023.01.107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Indexed: 07/08/2023]
Abstract
BACKGROUND Skeletal muscle wasting is a common phenotypic feature of several types of cancer, and it is associated with functional impairment, respiratory complications, and fatigue. However, equivocal evidence remains regarding the impact of cancer-induced muscle wasting on the different fiber types. AIM The aim of this study was to investigate the impact of urothelial carcinoma induced in mice on the histomorphometric features and collagen deposition in different skeletal muscles. MATERIALS AND METHODS Thirteen ICR (CD1) male mice were randomly assigned into two groups: exposed to 0.05% N-butyl-N-(4-hydroxybutyl) nitrosamine (BBN) in drinking water for 12 weeks, plus 8 weeks of tap water (BBN, n = 8) or with access to tap water for 20 weeks (CONT, n = 5). Tibialis anterior, soleus, and diaphragm muscles were collected from all animals. For cross-sectional area and myonuclear domain analysis, muscle sections were stained with hematoxylin and eosin, and for collagen deposition assessment, muscle sections were stained with picrosirius red. RESULTS All animals from the BBN group developed urothelial preneoplastic and neoplastic lesions, and the tibialis anterior from these animals presented a reduced cross-sectional area (p < 0.001), with a decreased proportion of fibers with a higher cross-sectional area, increased collagen deposition (p = 0.017), and higher myonuclear domain (p = 0.031). BBN mice also showed a higher myonuclear domain in the diaphragm (p = 0.015). CONCLUSION Urothelial carcinoma induced muscle wasting of the tibialis anterior, expressed by a decreased cross-sectional area, higher infiltration of fibrotic tissue, and increased myonuclear domain, which also increased in the diaphragm, suggesting that fast glycolytic muscle fibers are more susceptible to be affected by cancer development.
Collapse
Affiliation(s)
- M Esteves
- FP-I3ID, FP-BHS, Escola Superior de Saúde Fernando Pessoa, Porto 4200-450, Portugal
- Research Center in Physical Activity, Health and Leisure (CIAFEL), Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
| | - M Duarte
- Research Center in Physical Activity, Health and Leisure (CIAFEL), Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
| | - P A Oliveira
- Institute for Innovation, Capacity Building and Sustainability of Agri-food Production (Inov4Agro), Centre for Research and Technology of Agro-Environmental and Biological Sciences (CITAB): Clinical Academic Centre, Vila Real, Portugal
- Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
| | - R M Gil da Costa
- Institute for Innovation, Capacity Building and Sustainability of Agri-food Production (Inov4Agro), Centre for Research and Technology of Agro-Environmental and Biological Sciences (CITAB): Clinical Academic Centre, Vila Real, Portugal
- Postgraduate Programme in Adult Health (PPGSAD), Federal University of Maranhão (UFMA), São Luís, Brazil
- Molecular Oncology and Viral Pathology Group, Research Center of IPO Porto (CI-IPOP)/RISE@CI-IPOP (Health Research Network), Portuguese Oncology Institute of Porto (IPO Porto), Porto Comprehensive Cancer Center (Porto.CCC), 4200-072 Porto, Portugal
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
- Associate Laboratory in Chemical Engineering (ALiCE), Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
| | - M P Monteiro
- UMIB - Unidade Multidisciplinar de Investigação Biomédica, ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
- ITR - Laboratory of Integrative and Translocation Research in Population Health, Porto, Portugal
| | - J A Duarte
- TOXRUN - Toxicology Research Unit, University Institute of Health Sciences, CESPU, CRL, Gandra, Portugal
| |
Collapse
|
2
|
Santos AP, Couto CF, Pereira SS, Monteiro MP. Is Serotonin the Missing Link between COVID-19 Course of Severity in Patients with Diabetes and Obesity? Neuroendocrinology 2022; 112:1039-1045. [PMID: 35066497 PMCID: PMC9059061 DOI: 10.1159/000522115] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 01/11/2022] [Indexed: 11/19/2022]
Abstract
COVID-19 is an intriguing infectious condition with multisystemic manifestations and variable outcomes that are influenced by the concomitant presence of non-communicable diseases, such as obesity, diabetes, and cardiovascular disease, which were previously well established epidemics and therefore are considered global syndemics. Although an enormous progress towards understanding mechanisms of SARS-CoV-2 infection leading to COVID-19 has been made, there are still many areas of uncertainty to clarify. Systemic diseases are characterized by common links that allow integrating apparently unrelated disease manifestations. The authors launch the provocative hypothesis that serotonin is the putative mediator linking the lung, gut, cardiac, neurological, and other systemic manifestations that characterize severe COVID-19 in individuals with diabetes and obesity. In support of a role for serotonin in the mechanisms leading to disease severity are the similarities between acute and post-acute COVID-19 manifestations and neuroendocrine tumors presenting with carcinoid syndrome. Scientific discussion is set by highlighting the available clues that support this working hypothesis to trigger future research aimed at unravelling the molecular pathways underlying SARS-CoV-2 infection that are still far from being fully disclosed.
Collapse
Affiliation(s)
- Ana Paula Santos
- Portuguese Oncology Institute of Porto (IPO Porto), Department of Endocrinology, Porto, Portugal
- Portuguese Oncology Institute of Porto (IPO Porto), Clinical Research Unit, Research Center of IPO Porto (CI-IPOP), Porto, Portugal
- Precancerous and Early Cancer Management Group, Research Center of IPO Porto (CI-IPOP), RISE@CI-IPOP (Health Research Network), Porto, Portugal
| | | | - Sofia Silva Pereira
- Clinical and Experimental Endocrinology, Unit for Multidisciplinary Research in Biomedicine, UMIB ICBAS, University of Porto, Porto, Portugal
- Institute of Biomedical Sciences Abel Salazar (ICBAS), Department of Anatomy, University of Porto, Porto, Portugal
| | - Mariana Pereira Monteiro
- Clinical and Experimental Endocrinology, Unit for Multidisciplinary Research in Biomedicine, UMIB ICBAS, University of Porto, Porto, Portugal
- Institute of Biomedical Sciences Abel Salazar (ICBAS), Department of Anatomy, University of Porto, Porto, Portugal
| |
Collapse
|
3
|
van Hulsteijn LT, Pasquali R, Casanueva F, Haluzik M, Ledoux S, Monteiro MP, Salvador J, Santini F, Toplak H, Dekkers OM. Prevalence of endocrine disorders in obese patients: systematic review and meta-analysis. Eur J Endocrinol 2020; 182:11-21. [PMID: 31652416 DOI: 10.1530/eje-19-0666] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 10/24/2019] [Indexed: 11/08/2022]
Abstract
OBJECTIVE The increasing prevalence of obesity is expected to promote the demand for endocrine testing. To facilitate evidence guided testing, we aimed to assess the prevalence of endocrine disorders in patients with obesity. The review was carried out as part of the Endocrine Work-up for the Obesity Guideline of the European Society of Endocrinology. DESIGN Systematic review and meta-analysis of the literature. METHODS A search was performed in MEDLINE, EMBASE, Web of Science and COCHRANE Library for original articles assessing the prevalence of hypothyroidism, hypercortisolism, hypogonadism (males) or hyperandrogenism (females) in patients with obesity. Data were pooled in a random-effects logistic regression model and reported with 95% confidence intervals (95% CI). RESULTS Sixty-eight studies were included, concerning a total of 19.996 patients with obesity. The pooled prevalence of overt (newly diagnosed or already treated) and subclinical hypothyroidism was 14.0% (95% CI: 9.7-18.9) and 14.6% (95% CI: 9.2-20.9), respectively. Pooled prevalence of hypercortisolism was 0.9% (95% CI: 0.3-1.6). Pooled prevalence of hypogonadism when measuring total testosterone or free testosterone was 42.8% (95% CI: 37.6-48.0) and 32.7% (95% CI: 23.1-43.0), respectively. Heterogeneity was high for all analyses. CONCLUSIONS The prevalence of endocrine disorders in patients with obesity is considerable, although the underlying mechanisms are complex. Given the cross-sectional design of the studies included, no formal distinction between endocrine causes and consequences of obesity could be made.
Collapse
Affiliation(s)
- L T van Hulsteijn
- Department of Clinical Endocrinology and Metabolism, University Medical Centre Groningen, Groningen, The Netherlands
| | - R Pasquali
- University Alma Mater Studiorum, Bologna, Italy
| | - F Casanueva
- Department of Medicine, Santiago de Compostela University, Complejo Hospitalario Universitario de Santiago (CHUS), CIBER de Fisiopatologia Obesidad y Nutricion (CIBERobn), Instituto Salud Carlos III, Santiago de Compostela, Spain
| | - M Haluzik
- Diabetes Centre and Centre for Experimental Medicine, Institute for Clinical and Experimental Medicine and Institute of Endocrinology, Prague, Czech Republic
| | - S Ledoux
- Department of Physiology, Obesity Center, Louis Mourier Hospital (APHP), Colombes and Paris Diderot University, Paris, France
| | - M P Monteiro
- Endocrine, Cardiovascular & Metabolic Research, Unit for Multidisciplinary Research in Biomedicine (UMIB), Instituto de Ciências Biomédicas Abel Salazar (ICBAS), University of Oporto, Porto, Portugal
- Honorary Clinical Senior Lecturer and Obesity Consultant, University College of London, London, UK
| | - J Salvador
- Department of Endocrinology and Nutrition, University Clinic of Navarra, Pamplona, Spain
- CIBEROBN, Instituto Carlos III, Madrid, Spain
| | - F Santini
- Obesity and Lipodystrophy Center, University Hospital of Pisa, Pisa, Italy
| | - H Toplak
- Division of Endocrinology and Diabetology, Department of Medicine, Medical University of Graz, Graz, Austria
| | - O M Dekkers
- Department of Clinical Epidemiology, Leiden University Medical Centre, Leiden, The Netherlands
- Department of Clinical Endocrinology and Metabolism, Leiden University Medical Centre, Leiden, The Netherlands
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| |
Collapse
|
4
|
Pasquali R, Casanueva F, Haluzik M, van Hulsteijn L, Ledoux S, Monteiro MP, Salvador J, Santini F, Toplak H, Dekkers OM. European Society of Endocrinology Clinical Practice Guideline: Endocrine work-up in obesity. Eur J Endocrinol 2020; 182:G1-G32. [PMID: 31855556 DOI: 10.1530/eje-19-0893] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 11/08/2019] [Indexed: 11/08/2022]
Abstract
Obesity is an emerging condition, with a prevalence of ~20%. Although the simple measurement of BMI is likely a simplistic approach to obesity, BMI is easily calculated, and there are currently no data showing that more sophisticated methods are more useful to guide the endocrine work-up in obesity. An increased BMI leads to a number of hormonal changes. Additionally, concomitant hormonal diseases can be present in obesity and have to be properly diagnosed - which in turn might be more difficult due to alterations caused by body fatness itself. The present European Society of Endocrinology Clinical Guideline on the Endocrine Work-up in Obesity acknowledges the increased prevalence of many endocrine conditions in obesity. It is recommended to test all patients with obesity for thyroid function, given the high prevalence of hypothyroidism in obesity. For hypercortisolism, male hypogonadism and female gonadal dysfunction, hormonal testing is only recommended if case of clinical suspicion of an underlying endocrine disorder. The guideline underlines that weight loss in obesity should be emphasized as key to restoration of hormonal imbalances and that treatment and that the effect of treating endocrine disorders on weight loss is only modest.
Collapse
Affiliation(s)
- R Pasquali
- University Alma Mater Studiorum, Bologna, Italy
| | - F Casanueva
- Department of Medicine, Santiago de Compostela University, Complejo Hospitalario Universitario de Santiago (CHUS), CIBER de Fisiopatologia Obesidad y Nutricion (CIBERobn ), Instituto Salud Carlos III, Santiago de Compostela, Spain
| | - M Haluzik
- Diabetes Centre and Centre for Experimental Medicine, Institute for Clinical and Experimental Medicine and Institute of Endocrinology, Prague, Czech Republic
| | - L van Hulsteijn
- Department of Clinical Endocrinology and Metabolism, University Medical Centre Groningen, Groningen, the Netherlands
| | - S Ledoux
- Department of Physiology, Obesity Center, Louis Mourier Hospital (APHP), Colombes and Paris Diderot University, Paris, France
| | - M P Monteiro
- Endocrine, Cardiovascular & Metabolic Research, Unit for Multidisciplinary Research in Biomedicine (UMIB), Instituto de Ciências Biomédicas Abel Salazar (ICBAS), University of Oporto, Porto, Portugal
- University College of London, London, UK
| | - J Salvador
- Department of Endocrinology and Nutrition, University Clinic of Navarra, Pamplona, Spain
- CIBEROBN, Instituto Carlos III, Madrid, Spain
| | - F Santini
- Obesity and Lipodystrophy Center, University Hospital of Pisa, Pisa, Italy
| | - H Toplak
- Division of Endocrinology and Diabetology, Department of Medicine, Medical University of Graz, Graz, Austria
| | - O M Dekkers
- Department of Clinical Epidemiology, Leiden University Medical Centre, Leiden, the Netherlands
- Department of Clinical Endocrinology and Metabolism, Leiden University Medical Centre, Leiden, the Netherlands
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| |
Collapse
|
5
|
Bertoluci MC, Salles JEN, Silva-Nunes J, Pedrosa HC, Moreira RO, da Silva Duarte RMC, da Costa Carvalho DM, Trujilho FR, dos Santos Raposo JFC, Parente EB, Valente F, de Moura FF, Hohl A, Melo M, Araujo FGP, de Araújo Principe RMMC, Kupfer R, Costa e Forti A, Valerio CM, Ferreira HJ, Duarte JMS, Saraiva JFK, Rodacki M, Castelo MHCG, Monteiro MP, Branco PQ, de Matos PMP, de Melo Pereira de Magalhães PC, Betti RTB, Réa RR, Trujilho TDG, Pinto LCF, Leitão CB. Portuguese-Brazilian evidence-based guideline on the management of hyperglycemia in type 2 diabetes mellitus. Diabetol Metab Syndr 2020; 12:45. [PMID: 32489427 PMCID: PMC7245758 DOI: 10.1186/s13098-020-00551-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 05/11/2020] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND In current management of type 2 diabetes (T2DM), cardiovascular and renal prevention have become important targets to be achieved. In this context, a joint panel of four endocrinology societies from Brazil and Portugal was established to develop an evidence-based guideline for treatment of hyperglycemia in T2DM. METHODS MEDLINE (via PubMed) was searched for randomized clinical trials, meta-analyses, and observational studies related to diabetes treatment. When there was insufficient high-quality evidence, expert opinion was sought. Updated positions on treatment of T2DM patients with heart failure (HF), atherosclerotic CV disease (ASCVD), chronic kidney disease (CKD), and patients with no vascular complications were developed. The degree of recommendation and the level of evidence were determined using predefined criteria. RESULTS AND CONCLUSIONS In non-pregnant adults, the recommended HbA1c target is below 7%. Higher levels are recommended in frail older adults and patients at higher risk of hypoglycemia. Lifestyle modification is recommended at all phases of treatment. Metformin is the first choice when HbA1c is 6.5-7.5%. When HbA1c is 7.5-9.0%, dual therapy with metformin plus an SGLT2i and/or GLP-1RA (first-line antidiabetic agents, AD1) is recommended due to cardiovascular and renal benefits. If an AD1 is unaffordable, other antidiabetic drugs (AD) may be used. Triple or quadruple therapy should be considered when HbA1c remains above target. In patients with clinical or subclinical atherosclerosis, the combination of one AD1 plus metformin is the recommended first-line therapy to reduce cardiovascular events and improve blood glucose control. In stable heart failure with low ejection fraction (< 40%) and glomerular filtration rate (eGFR) > 30 mL/min/1.73 m2, metformin plus an SGLT-2i is recommended to reduce cardiovascular mortality and heart failure hospitalizations and improve blood glucose control. In patients with diabetes-associated chronic kidney disease (CKD) (eGFR 30-60 mL/min/1.73 m2 or eGFR 30-90 mL/min/1.73 m2 with albuminuria > 30 mg/g), the combination of metformin and an SGLT2i is recommended to attenuate loss of renal function, reduce albuminuria and improve blood glucose control. In patients with severe renal failure, insulin-based therapy is recommended to improve blood glucose control. Alternatively, GLP-1RA, DPP4i, gliclazide MR and pioglitazone may be considered to reduce albuminuria. In conclusion, the current evidence supports individualizing anti-hyperglycemic treatment for T2DM.
Collapse
Affiliation(s)
- Marcello Casaccia Bertoluci
- Internal Medicine Department, School of Medicine, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Ramiro Barcelos, 2350, 4º Andar, Porto Alegre, RS 90035-007 Brazil
- Endocrinology Unit, Hospital de Clínicas de Porto Alegre (HCPA-UFRGS), Rua Ramiro Barcelos, 2350, 4º Andar, Porto Alegre, RS 90035-007 Brazil
| | - João Eduardo Nunes Salles
- Department of Internal Medicine, Discipline of Endocrinology, Faculdade de Ciências Médicas da Santa Casa de São Paulo (FCMSCSP), Rua Dr. Cesário Mota Junior, 61, São Paulo, SP 01221-020 Brazil
| | - José Silva-Nunes
- Department of Endocrinology, Diabetes and Metabolism/Centro Hospitalar, Universitário de Lisboa Central (CHULC), Rua da Beneficência, 8, 1069-166 Lisbon, Portugal
- NOVA Medical School (NMS)/Faculdade de Ciências Médicas (FCM) da Universidade Nova de Lisboa, Rua da Beneficência, 8, 1069-166 Lisbon, Portugal
- Health and Technology Research Center/Escola Superior de Tecnologia da Saúde de Lisboa, Rua da Beneficência, 8, 1069-166 Lisbon, Portugal
- Hospital Curry Cabral, Rua da Beneficência, 8, 1069-166 Lisbon, Portugal
| | - Hermelinda Cordeiro Pedrosa
- Endocrinology Unit and Research Centre, Hospital Regional de Taguatinga, Área Especial Nº 24, Setor C Norte, Taguatinga Norte, Brasília, DF 72115-920 Brazil
| | - Rodrigo Oliveira Moreira
- Instituto Estadual de Diabetes e Endocrinologia Luiz Capriglione (IEDE), Rua Moncorvo Filho, 90, Rio de Janeiro, RJ 20211-340 Brazil
- Faculdade de Medicina, Universidade Presidente Antônio Carlos (UNIPAC), Juiz de Fora, MG Brazil
- Centro Universitário de Valença (UNIFAA), Rua Moncorvo Filho, 90, Rio de Janeiro, RJ 20211-340 Brazil
| | | | - Davide Mauricio da Costa Carvalho
- Department of Endorinology, Diabetes and Metabolism, Centro Hospitalar S. João, Porto, Portugal
- Faculty of Medicine, i3S, Universidade do Porto, Porto, Portugal
| | - Fábio Rogério Trujilho
- Department of Obesity, Sociedade Brasileira de Endocrinologia e Metabologia, Av. Antonio Carlos Magalhães, s/n, Parque Bela Vista, Salvador, BA 40275-350 Brazil
| | - João Filipe Cancela dos Santos Raposo
- NOVA Medical School (NMS), Faculdade de Ciências Médicas (FCM), Universidade Nova de Lisboa, Rua Salitre, 118, 1250-203 Lisbon, Portugal
- Associação Protetora dos Diabéticos de Portugal (APDP), Rua Salitre, 118, 1250-203 Lisbon, Portugal
- Sociedade Portuguesa de Diabetologia (SPD), Rua Salitre, 118, 1250-203 Lisbon, Portugal
| | - Erika Bezerra Parente
- Department of Endocrinology, Faculdade de Ciências Médicas da Santa Casa de São Paulo (FCMSCSP), Rua Dr. Cesario Mota Jr., 112, São Paulo, SP 01221-010 Brazil
| | - Fernando Valente
- Endocrinology Division, Department of Internal Medicine, Faculdade de Medicina do ABC, Av. Lauro Gomes, 2000, Santo André, SP Brazil
| | - Fábio Ferreira de Moura
- Department of Endocrinology, Universidade de Pernambuco (UPE), Rua Arnobio Marques, 310, Recife, PE 50100-130 Brazil
- Endocrinology Service, Instituto de Medicina de Pernambuco (IMIP), Rua Arnobio Marques, 310, Recife, PE 50100-130 Brazil
| | - Alexandre Hohl
- Department of Endocrinology and Metabolism/Department of Internal Medicine, Universidade Federal de Santa Catarina (UFSC), Rua Professora Maria Flora Pausewang, s/n, Florianópolis, SC 88036-800 Brazil
- Hospital Universitário Polydoro Ernani de São Thiago, Campus Universitário, Rua Professora Maria Flora Pausewang, s/n, Florianópolis, SC 88036-800 Brazil
| | - Miguel Melo
- Department of Endocrinology, Diabetes and Metabolism, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
- Medical Faculty, University of Coimbra, Praceta Mota Pinto, 3000-075 Coimbra, Portugal
| | | | | | - Rosane Kupfer
- Department of Diabetes, Instituto Estadual de Diabetes e Endocrinologia Luiz Capriglione (IEDE), Rua Moncorvo Filho, 90, Rio de Janeiro, RJ 20211-340 Brazil
| | - Adriana Costa e Forti
- Department of Internal Medicine, School of Medicine, Universidade Federal do Ceará (UFC), Rua Capitão Francisco Pedro, 1290, Fortaleza, CE 60430-375 Brazil
| | - Cynthia Melissa Valerio
- Instituto Estadual de Diabetes e Endocrinologia Luiz Capriglione (IEDE), Rua Moncorvo Filho, 90, Rio de Janeiro, RJ 20211-340 Brazil
| | - Hélder José Ferreira
- Unidade de Saúde Familiar Coimbra Celas, Administração Regional de Saúde do Centro, Av. D. Afonso Henriques, 141, 3000-011 Coimbra, Portugal
| | | | - José Francisco Kerr Saraiva
- Cardiology Division, Faculdade de Medicina, Pontifícia Universidade Católica de Campinas (PUC-Campinas), Rua Engenheiro Carlos Stevenson, 560, Campinas, SP 13092-132 Brazil
- Instituto de Pesquisa Clínica de Campinas (IPECC), Rua Engenheiro Carlos Stevenson, 560, Campinas, SP 13092-132 Brazil
| | - Melanie Rodacki
- Department of Internal Medicine, Diabetes and Nutrology Section, Universidade Federal do Rio de Janeiro (UFRJ), Rua Rodolpho Paulo Rocco. 255, Sala 9E14, Rio de Janeiro, RJ Brazil
| | | | - Mariana Pereira Monteiro
- Unidade de Investigação Multidisciplicar Biomédica, Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Patrícia Quadros Branco
- Associação Protetora dos Diabéticos de Portugal (APDP), Rua Rodrigo da Fonseca 1, 1250-189 Lisbon, Portugal
- Nephrology Service, Centro Hospitalar Lisboa Ocidental, Rua Rodrigo da Fonseca, 1, 1250-189 Lisbon, Portugal
- Diretoria Clínica, Nephrocare, Rua Rodrigo da Fonseca, 1, 1250-189 Lisbon, Portugal
| | - Pedro Manuel Patricio de Matos
- Department of Cardiology, Associação Protetora dos Diabéticos de Portugal (APDP), Rua Rodrigo da Fonseca, 1250, 189, Lisbon, Portugal
| | | | | | - Rosângela Roginski Réa
- Department of Internal Medicine, Serviço de Endocrinologia e Metabologia, Hospital de Clínicas, Universidade Federal do Paraná (UFPR), Av. Agostinho Leão Junior, 285, Curitiba, PR 80030-110 Brazil
| | - Thaisa Dourado Guedes Trujilho
- Department of Diabetes Mellitus, Sociedade Brasileira de Endocrinologia e Metabologia, Av. Antonio Carlos Magalhães, s/n, Salvador, BA 40275-350 Brazil
- Sociedade Brasileira de Diabetes, Regional Bahia, Av. Antonio Carlos Magalhães, s/n, Salvador, BA 40275-350 Brazil
| | - Lana Catani Ferreira Pinto
- Endocrinology Unit, Hospital de Clínicas de Porto Alegre (HCPA-UFRGS), Rua Ramiro Barcelos, 2350, 4º Andar, Porto Alegre, RS 90035-007 Brazil
| | - Cristiane Bauermann Leitão
- Internal Medicine Department, School of Medicine, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Ramiro Barcelos, 2350, 4º Andar, Porto Alegre, RS 90035-007 Brazil
- Endocrinology Unit, Hospital de Clínicas de Porto Alegre (HCPA-UFRGS), Rua Ramiro Barcelos, 2350, 4º Andar, Porto Alegre, RS 90035-007 Brazil
| |
Collapse
|
6
|
Ankley LM, Monteiro MP, Camp KM, O'Quinn R, Castillo AR. Manuka honey chelates iron and impacts iron regulation in key bacterial pathogens. J Appl Microbiol 2019; 128:1015-1024. [PMID: 31782867 DOI: 10.1111/jam.14534] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 11/05/2019] [Accepted: 11/26/2019] [Indexed: 12/21/2022]
Abstract
AIM The aim of this study was to test the hypothesis that Manuka honey (MH) chelates iron and promotes an iron-limiting environment, which contributes to its antimicrobial activity. METHODS AND RESULTS Employing a ferrozine-based assay, we observed that MH is an iron chelator that depletes iron from solution. Siderophores are small molecules that bind ferric iron (III) with high affinity and their levels are upregulated by bacteria under iron-limiting conditions. We demonstrated by quantitating siderophore production that Escherichia coli and Pseudomonas aeruginosa treated with MH sub-minimum inhibitory concentrations (sub-MIC) experience an iron-limiting environment and increase siderophore production. In addition, supplementation with ferrous iron (II) significantly increased growth of E. coli, Staphylococcus aureus and P. aeruginosa cultured at their MH MIC above that observed in nonsupplemented controls. By contrast, supplementation with ferric iron (III) significantly increased growth for only E. coli and P. aeruginosa, above their nonsupplemented controls. CONCLUSIONS Manuka honey chelates iron, thereby generating an iron-limiting environment for E. coli and P. aeruginosa, and to a lesser extent S. aureus, which contributes to its antimicrobial properties. SIGNIFICANCE AND IMPACT OF THE STUDY Our work demonstrates that MH-induced iron chelation is an antimicrobial mechanism that differentially impacts the bacterial species tested here. Iron chelation affects multiple diverse physiological processes in bacteria and would contribute to the lack of bacterial resistance to MH. Iron metabolism is tightly regulated; bacteria require this essential nutrient for survival, but in excess it is toxic. Additional exploration of MH's iron chelation mechanism will facilitate its future use in mainstream medicine.
Collapse
Affiliation(s)
- L M Ankley
- Department of Biology, Eastern Washington University, Cheney, WA, USA
| | - M P Monteiro
- Department of Biology, Eastern Washington University, Cheney, WA, USA
| | - K M Camp
- Department of Biology, Eastern Washington University, Cheney, WA, USA
| | - R O'Quinn
- Department of Biology, Eastern Washington University, Cheney, WA, USA
| | - A R Castillo
- Department of Biology, Eastern Washington University, Cheney, WA, USA
| |
Collapse
|
7
|
Martins AD, Sá R, Monteiro MP, Barros A, Sousa M, Carvalho RA, Silva BM, Oliveira PF, Alves MG. Ghrelin acts as energy status sensor of male reproduction by modulating Sertoli cells glycolytic metabolism and mitochondrial bioenergetics. Mol Cell Endocrinol 2016; 434:199-209. [PMID: 27392494 DOI: 10.1016/j.mce.2016.07.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 07/04/2016] [Accepted: 07/04/2016] [Indexed: 02/06/2023]
Abstract
Ghrelin is a growth hormone-releasing peptide that has been suggested to interfere with spermatogenesis, though the underling mechanisms remain unknown. We studied the effect of ghrelin in human Sertoli cells (hSCs) metabolic phenotype. For that, hSCs were exposed to increasing concentrations of ghrelin (20, 100 and 500 pM) mimicking the levels reported in obese, normal weight, and severely undernourished individuals. The metabolite production/consumption was determined. The protein levels of key glycolysis-related transporters and enzymes were assessed. The lactate dehydrogenase (LDH) activity was measured. Mitochondrial complexes protein levels and mitochondria membrane potential were also measured. We showed that hSCs express the growth hormone secretagogue receptor. At the concentration present in the plasma of normal weight men, ghrelin caused a decrease of glucose consumption and mitochondrial membrane potential in hSCs, though LDH activity and lactate production remained unchanged, illustrating an alteration of glycolytic flux efficiency. Exposure of hSCs to levels of ghrelin found in the plasma of severely undernourished individuals decreased pyruvate consumption and mitochondrial complex III protein expression. All concentrations of ghrelin decreased alanine and acetate production by hSCs. Notably, the effects of ghrelin levels found in severely undernourished individuals were more pronounced in hSCs metabolic phenotype highlighting the importance of a proper eating behavior to maintain male reproductive potential. In conclusion, ghrelin acts as an energy status sensor for hSCs in a dose-dependent manner, showing an inverse association with the production of lactate, thus controlling the nutritional support of spermatogenesis.
Collapse
Affiliation(s)
- A D Martins
- Department of Microscopy, Laboratory of Cell Biology, Abel Salazar Institute of Biomedical Sciences (ICBAS), University of Porto, 4050-313, Porto, Portugal; Unit for Multidisciplinary Research in Biomedicine, Abel Salazar Institute of Biomedical Sciences (UMIB-ICBAS), University of Porto, 4050-313, Porto, Portugal
| | - R Sá
- Department of Microscopy, Laboratory of Cell Biology, Abel Salazar Institute of Biomedical Sciences (ICBAS), University of Porto, 4050-313, Porto, Portugal; Unit for Multidisciplinary Research in Biomedicine, Abel Salazar Institute of Biomedical Sciences (UMIB-ICBAS), University of Porto, 4050-313, Porto, Portugal
| | - M P Monteiro
- Unit for Multidisciplinary Research in Biomedicine, Abel Salazar Institute of Biomedical Sciences (UMIB-ICBAS), University of Porto, 4050-313, Porto, Portugal; Department of Anatomy, Abel Salazar Institute of Biomedical Sciences, ICBAS, University of Porto, 4050-313, Porto, Portugal
| | - A Barros
- Centre for Reproductive Genetics Professor Alberto Barros, 4100-009, Porto, Portugal; Department of Genetics, Faculty of Medicine, University of Porto, 4200-319, Porto, Portugal; i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135, Porto, Portugal
| | - M Sousa
- Department of Microscopy, Laboratory of Cell Biology, Abel Salazar Institute of Biomedical Sciences (ICBAS), University of Porto, 4050-313, Porto, Portugal; Unit for Multidisciplinary Research in Biomedicine, Abel Salazar Institute of Biomedical Sciences (UMIB-ICBAS), University of Porto, 4050-313, Porto, Portugal; Centre for Reproductive Genetics Professor Alberto Barros, 4100-009, Porto, Portugal
| | - R A Carvalho
- Department of Life Sciences, Faculty of Sciences and Technology and Center for Neurosciences and Cell Biology (CNC), University of Coimbra, 3004-504, Coimbra, Portugal
| | - B M Silva
- Health Sciences Research Centre (CICS), University of Beira Interior, 6201-506, Covilhã, Portugal
| | - P F Oliveira
- Department of Microscopy, Laboratory of Cell Biology, Abel Salazar Institute of Biomedical Sciences (ICBAS), University of Porto, 4050-313, Porto, Portugal; Unit for Multidisciplinary Research in Biomedicine, Abel Salazar Institute of Biomedical Sciences (UMIB-ICBAS), University of Porto, 4050-313, Porto, Portugal; i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135, Porto, Portugal
| | - M G Alves
- Department of Life Sciences, Faculty of Sciences and Technology and Center for Neurosciences and Cell Biology (CNC), University of Coimbra, 3004-504, Coimbra, Portugal; Health Sciences Research Centre (CICS), University of Beira Interior, 6201-506, Covilhã, Portugal.
| |
Collapse
|
8
|
Almeida AKA, Monteiro MP, Dias JMM, Omena L, da Silva AJC, Tonholo J, Mortimer RJ, Navarro M, Jacinto C, Ribeiro AS, de Oliveira IN. Synthesis and spectroscopic characterization of a fluorescent pyrrole derivative containing electron acceptor and donor groups. Spectrochim Acta A Mol Biomol Spectrosc 2014; 128:812-818. [PMID: 24704598 DOI: 10.1016/j.saa.2014.03.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Revised: 02/24/2014] [Accepted: 03/08/2014] [Indexed: 06/03/2023]
Abstract
The synthesis and fluorescence characterization of a new pyrrole derivative (PyPDG) containing the electron donor-acceptor dansyl substituent is reported. The effects of temperature and solvent polarity on the steady-state fluorescence of this compound are investigated. Our results show that PyPDG exhibits desirable fluorescent properties which makes it a promising candidate to be used as the photoactive material in optical thermometry and thermography applications. Further, the electrochemical and emission properties of polymeric films obtained from the oxidation polymerization of PyPDG are also analyzed.
Collapse
Affiliation(s)
- A K A Almeida
- Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, 57072-970 Maceió-AL, Brazil
| | - M P Monteiro
- Instituto de Física, Universidade Federal de Alagoas, 57072-970 Maceió-AL, Brazil
| | - J M M Dias
- Departamento de Química Fundamental, CCEN, Universidade Federal de Pernambuco, 50670-901 Recife-PE, Brazil
| | - L Omena
- Instituto de Física, Universidade Federal de Alagoas, 57072-970 Maceió-AL, Brazil
| | - A J C da Silva
- Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, 57072-970 Maceió-AL, Brazil
| | - J Tonholo
- Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, 57072-970 Maceió-AL, Brazil
| | - R J Mortimer
- Department of Chemistry, Loughborough University, LE11 3TU Leicestershire, United Kingdom
| | - M Navarro
- Departamento de Química Fundamental, CCEN, Universidade Federal de Pernambuco, 50670-901 Recife-PE, Brazil
| | - C Jacinto
- Instituto de Física, Universidade Federal de Alagoas, 57072-970 Maceió-AL, Brazil
| | - A S Ribeiro
- Instituto de Química e Biotecnologia, Universidade Federal de Alagoas, 57072-970 Maceió-AL, Brazil; Department of Chemistry, Loughborough University, LE11 3TU Leicestershire, United Kingdom
| | - I N de Oliveira
- Instituto de Física, Universidade Federal de Alagoas, 57072-970 Maceió-AL, Brazil.
| |
Collapse
|
9
|
Abstract
Growth hormone (GH) is secreted by the pituitary gland in a pulsatile manner. It is accepted that this pulsatility is primarily controlled by the hypothalamus, although this secretion can also be modulated by factors from GH-targeted organs, the pituitary and other regions of the central nervous systems, or by factors arriving from peripheral organs. In mammals, hypothalamic control of GH pulsatility is classically regulated by the interplay of two opposing hormones, stimulatory GHRH and inhibitory somatostatin (SS). Recognition of the gastric ghrelin peptide as the natural ligand for GH secretagogue receptor type 1a (GHS-R1a) added a new element to the complex physiological regulation of GH secretion and clarified some of its aspects that were previously not fully understood. In this review, we examine data that suggest that ghrelin may regulate GH secretion, as well as ghrelin's possible use as a therapeutic agent.
Collapse
Affiliation(s)
- M C Carreira
- CIBER de Fisiopatologia Obesidad y Nutricion CB06/03, Instituto Salud Carlos III, Complejo Hospitalario Universitario de Santiago CHUS, Santiago de Compostela, Spain
| | | | | | | | | |
Collapse
|
10
|
York B, Truett AA, Monteiro MP, Barry SJ, Warden CH, Naggert JK, Maddatu TP, West DB. Gene-environment interaction: a significant diet-dependent obesity locus demonstrated in a congenic segment on mouse chromosome 7. Mamm Genome 1999; 10:457-62. [PMID: 10337618 DOI: 10.1007/s003359901023] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
We have previously reported suggestive evidence for a locus on Chromosome (Chr) 7 that affects adiposity in F2 mice from a CAST/Ei x C57BL/6J intercross fed a high-fat diet. Here we characterize the effect of a high-fat (32.6 Kcal% fat) diet on male and female congenic mice with a C57BL/6J background and a CAST/Ei-derived segment on Chr 7. Adiposity index (AI) and weights of certain fat pads were approximately 50% lower in both male and female congenic mice than in control C57BL/6J mice, and carcass fat content was significantly reduced. The reduction of fat depot weights was not seen, however, in congenic animals fed a low-fat chow diet (12 Kcal% fat). The congenic segment is approximately 25 cM in length, extending from D7Mit213 to D7Mit41, and includes the tub, Ucp2 and Ucp3, genes, all of which are candidate genes for this effect. Some polymorphisms have been found on comparing c-DNA sequences of the Ucp2 gene from C57BL/6J and CAST/Ei mice. These results suggest that one or more genes present in the congenic segment modulate the susceptibility to fat deposition on feeding a high-fat diet. We were unable to show any significant difference between the energy intakes of the congenic and the control C57BL/6J mice on the high-fat diet. Also, measurements of energy expenditure in male mice at 6 weeks of age, during the first 2 weeks of exposure to the high-fat diet, failed to show any differences between control and congenic animals.
Collapse
Affiliation(s)
- B York
- Obesity, Diabetes and Metabolism Section, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge 70808, USA
| | | | | | | | | | | | | | | |
Collapse
|
11
|
Borne AT, Truett AA, Monteiro MP, Volaufova J, West DB. Changes in skeletal muscle vascular resistance with weight gain: associations with insulin and sympathetic activity. Obes Res 1999; 7:68-75. [PMID: 10023732 DOI: 10.1002/j.1550-8528.1999.tb00392.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE This study was designed to characterize changes in peripheral vascular resistance with weight gain, and whether these changes are correlated with insulin and/or sympathetic activity. RESEARCH METHODS AND PROCEDURES Femoral vascular resistance (FVR), mean arterial pressure, heart rate, and plasma insulin were measured before and during overfeeding in seven dogs with unilateral lumbar ganglionectomy (L3 to L6). Measurements were taken standing and while walking on a treadmill. RESULTS There was a significant main effect of weight gain to increase mean arterial pressure (16.5+/-8.4 mmHg and 12.5+/-6.8 mmHg increase for standing and walking baseline, respectively) and heart rate (increase from week 1 of 31.6+/-10.6 beats/minute standing and 38.3+/-9.1 walking beat/minute). FVR increased immediately with overfeeding/ weight gain [standing: denervated (DNX):1.32+/-0.3 to 2.34+/-0.5; intact: 0.88+/-0.17 to 1.9+/-0.33 mmHg/mL.min(-1)], but returned to baseline with continued weight gain. Return of FVR to baseline occurred between weeks 2 and 3 of overfeeding in the DNX limb, but did not return to baseline until week 6 in the innervated limb. These changes were not correlated with plasma insulin levels. DISCUSSION These data suggest that vascular resistance may be normal in the obese, but increases in vascular resistance occur early with weight gain (before changes in arterial pressure). This initial increase in vascular resistance could initiate the series of events leading to obesity-associated hypertension. Additionally, changing vascular resistance during weight gain may be influenced by sympathetic activity, because DNX limb FVR returned to baseline approximately 3 weeks earlier than the innervated limb.
Collapse
Affiliation(s)
- A T Borne
- Obesity, Diabetes, and Metabolism Section, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge 70808-4124, USA
| | | | | | | | | |
Collapse
|
12
|
Abstract
Cardiovascular and metabolic parameters were evaluated in 15 female spayed dogs before and after they became obese on either a saturated fat (LD, lard, n=8) or unsaturated fat (CO, corn oil, n=7) diet. Body weight and body fat increased significantly in both groups, although no differences occurred between diet groups. Dogs receiving the LD diet exhibited a greater increase in mean arterial pressure than those receiving the CO diet (p<0.01; 15.9 +/- 2.1 vs. 9.8 +/- 3.3 mm Hg increase). The CO diet stimulated a greater increase in heart rate than the LD diet (p<0.05; 32.8 +/- 7.8 vs. 14.1 +/- 5.8 bpm increase). Ganglionic blockade with chlorisondamine caused an increase in HR in both lean groups and in the obese CO group, but not the obese LD group, consistent with a decrease in parasympathetic tone to the heart in the dogs overfed saturated fat. Obesity enhanced the heart rate response to beta-adrenergic stimulation by isoproterenol in the LD, but not CO group. The LD diet increased circulating insulin and decreased insulin sensitivity, whereas the CO diet had no effect on either parameter. These findings suggest that the composition of dietary fat can modulate the autonomic and metabolic adaptations induced by dietary obesity.
Collapse
Affiliation(s)
- A A Truett
- Obesity, Diabetes and Metabolism Section, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge 70808, USA
| | | | | | | |
Collapse
|
13
|
Monteiro MP. [Evolution of the pulp chamber and pseudodentin in the selachians the Brazilian coast (suborder Galeoidea). Morphological study]. J Biol Buccale 1976; 4:279-94. [PMID: 1069727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The author made a morphological study of Selachii (Suborder Galeoidae) of the Brazil coast using ground sections. Dental structures undergo modifications as one studies species of different evolutionary stages. The lower Selachii have an osteodentine nucleus which suffer alterations until it disappears leaving a pulp chamber in its place. The layer of pseudodentine shows modification too. It consists of pseudodentine in lower Selachii but its modifications are such that in higher Selachii (Sphyrnidae, for instance) one may suppose it is made of orthodentine. Based on these and other published data the author concludes that the degree of evolution of the pulp chamber and pseudodentine allows the establishment, with great probability, of the phylogenitic position of the Selachii within the Galeoidea Suborder.
Collapse
|
14
|
Monteiro MP, Aly AM. [Histologic study of the teeth of Myleus sp. (Pacu). Observations with common and polarized optic microscopy]. Rev Fac Odontol Sao Paulo 1974; 12:295-9. [PMID: 4536015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|