1
|
Lima GO, Menezes da Silva AL, Azevedo JEC, Nascimento CP, Vieira LR, Hamoy AO, Oliveira Ferreira L, Bahia VRLO, Muto NA, Lopes DCF, Hamoy M. 100 YEARS OF VITAMIN D: Supraphysiological doses of vitamin D changes brainwave activity patterns in rats. Endocr Connect 2022; 11:EC-21-0457.R2. [PMID: 35148281 PMCID: PMC8942315 DOI: 10.1530/ec-21-0457] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 02/11/2022] [Indexed: 11/08/2022]
Abstract
Low plasma levels of vitamin D causes bone mineral change that can precipitate osteopenia and osteoporosis and could aggravate autoimmune diseases, hypertension and diabetes. The demand for vitamin D supplementation becomes necessary; however, the consumption of vitamin D is not without risks, which its toxicity could have potentially serious consequences related to hypervitaminosis D, such as hypercalcemia and cerebral alterations. Thus, the present study describes the electroencephalographic changes caused by supraphysiological doses of vitamin D in the brain electrical dynamics and the electrocardiographic changes. After 4 days of treatment with vitamin D at a dose of 25,000 IU/kg, the serum calcium levels found were increased in comparison with the control group. The electrocorticogram analysis found a reduction in wave activity in the delta, theta, alpha and beta frequency bands. For ECG was observed changes with shortened QT follow-up, which could be related to serum calcium concentration. This study presented important evidence about the cerebral and cardiac alterations caused by high doses of vitamin D, indicating valuable parameters in the screening and decision-making process for diagnosing patients with symptoms suggestive of intoxication.
Collapse
Affiliation(s)
- Gabriella Oliveira Lima
- Laboratory of Pharmacology and Toxicology of Natural Products, Institute of Biological Sciences, Federal University of Pará, Belém, Pará, Brazil
| | - Alex Luiz Menezes da Silva
- Laboratory of Pharmacology and Toxicology of Natural Products, Institute of Biological Sciences, Federal University of Pará, Belém, Pará, Brazil
| | - Julianne Elba Cunha Azevedo
- Laboratory of Pharmacology and Toxicology of Natural Products, Institute of Biological Sciences, Federal University of Pará, Belém, Pará, Brazil
| | - Chirlene Pinheiro Nascimento
- Laboratory of Pharmacology and Toxicology of Natural Products, Institute of Biological Sciences, Federal University of Pará, Belém, Pará, Brazil
| | - Luana Rodrigues Vieira
- Laboratory of Pharmacology and Toxicology of Natural Products, Institute of Biological Sciences, Federal University of Pará, Belém, Pará, Brazil
| | - Akira Otake Hamoy
- Laboratory of Pharmacology and Toxicology of Natural Products, Institute of Biological Sciences, Federal University of Pará, Belém, Pará, Brazil
| | - Luan Oliveira Ferreira
- Laboratory of Experimental Neuropathology, Institute of Biological Sciences, Federal University of Pará, Belém, Pará, Brazil
| | | | - Nilton Akio Muto
- Amazon Bioactive Compounds Valorization Center, Institute of Biological Sciences, Federal University of Pará, Belém, Pará, Brazil
| | - Dielly Catrina Favacho Lopes
- Laboratory of Experimental Neuropathology, Institute of Biological Sciences, Federal University of Pará, Belém, Pará, Brazil
- Correspondence should be addressed to D C F Lopes or M Hamoy: or
| | - Moisés Hamoy
- Laboratory of Pharmacology and Toxicology of Natural Products, Institute of Biological Sciences, Federal University of Pará, Belém, Pará, Brazil
- Correspondence should be addressed to D C F Lopes or M Hamoy: or
| |
Collapse
|
2
|
Jolobe OMP. Differential diagnosis of the association of gastrointestinal symptoms and ST segment elevation, in the absence of chest pain. Am J Emerg Med 2021; 49:137-141. [PMID: 34111833 DOI: 10.1016/j.ajem.2021.05.067] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/27/2021] [Accepted: 05/28/2021] [Indexed: 11/18/2022] Open
Abstract
This is a review of the underlying causes of the association of ST segment elevation and gastrointestinal symptoms such as abdominal pain, nausea, vomiting, and anorexia, in patients who do not have chest pain. The review was based on anecdotal reports in Googlescholar and Pubmed using the search terms, abdominal pain, nausea, vomiting, anorexia, ST elevation, myocardial infarction, and Takotsubo cardiomyopathy. Those patients who did not have acute myocardial infarction as the cause of the association of ST segment elevation and gastrointestinal symptoms were compared with counterparts with similar symptoms who had well authenticated acute myocardial infarction or Takotsubo cardiomyopathy as the underlying cause of ST segment elevation. The underlying causes of gastrointestinal symptoms which could be associated with ST segment elevation in the absence of either acute myocardial infarction or Takotsubo cardiomyopathy comprised pneumonia, pulmonary embolism, perforated gastric ulcer, intestinal obstruction, acute appendicitis, acute pancreatitis, acute cholecystitis, pheochromocytoma, bacterial meningitis, diabetic keto acidosis, and cannabis abuse. However, each of those disorders could also coexist either with acute myocardial infarction or with Takotsubo cardiomyopathy. The coexistence of ST segment elevation and gastrointestinal symptoms(without chest pain) was also documented in patients with esophageal perforation, mesenteric ischaemia, aortic dissection, Kounis syndrome, and in electrolyte disorders. In the context of presentation with gastroenterological symptoms but without concurrent chest pain, echocardiography appeared to be useful in distinguishing between "pseudo" myocardial infarction characterised by ST segment elevation in the absence of cardiac disease vs ST segment elevation attributable either to acute myocardial infarction or to Takotsubo cardiomyopathy.
Collapse
Affiliation(s)
- Oscar M P Jolobe
- British Medical Association, BMA House, Tavistock Square, London WC 1H 9JR, United Kingdom.
| |
Collapse
|
3
|
Affiliation(s)
| | - K. D. Modi
- Department of Endocrinology, Care Hospital, Banjara Hills, Hyderabad, Telangana, India
| | - Nirmal Kumar
- Department of Endocrinology, Care Hospital, Banjara Hills, Hyderabad, Telangana, India
| | - Harsh Parekh
- Department of Endocrinology, Care Hospital, Banjara Hills, Hyderabad, Telangana, India
| |
Collapse
|
4
|
Kazama I. High-calcium exposure to frog heart: a simple model representing hypercalcemia-induced ECG abnormalities. J Vet Med Sci 2016; 79:71-75. [PMID: 27773880 PMCID: PMC5289240 DOI: 10.1292/jvms.16-0413] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
By simply adding a high concentration of calcium solution to the surface of the bullfrog heart, we reproduced electrocardiogram (ECG) abnormalities representing those observed in hypercalcemia, such as Osborn waves and shortening of the QT interval. The rise in extracellular calcium concentration may have activated the outward potassium currents during phase 3 of the action potential, and thus decreased its duration. In addition to the known decrease in the duration of phase 2, such changes in phase 3 were also likely to contribute to the shortening of the QT interval. The dual recordings of the action potential in cardiomyocytes and the ECG waves enabled us to demonstrate the mechanisms of ECG abnormalities induced by hypercalcemia.
Collapse
Affiliation(s)
- Itsuro Kazama
- Department of Physiology, Tohoku University Graduate School of Medicine, Seiryo-cho, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| |
Collapse
|
5
|
Nahass M, Sharma R, Penn J. Hypercalcemia-induced pancreatitis presenting with acute ST-elevations mimicking a myocardial infarction. Am J Emerg Med 2016; 34:1187.e1-2. [PMID: 26742456 DOI: 10.1016/j.ajem.2015.11.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 11/07/2015] [Indexed: 11/18/2022] Open
Affiliation(s)
- Meghan Nahass
- Department of Medicine, Rutgers-Robert Wood Johnson Medical School, New Brunswick, NJ
| | - Ranita Sharma
- Department of Medicine, Rutgers-Robert Wood Johnson Medical School, New Brunswick, NJ
| | - James Penn
- Rutgers-Robert Wood Johnson Medical School, New Brunswick, NJ.
| |
Collapse
|
6
|
Strand AO, Aung TT, Agarwal A. Not all ST-segment changes are myocardial injury: hypercalcaemia-induced ST-segment elevation. BMJ Case Rep 2015; 2015:bcr-2015-211214. [PMID: 26464407 DOI: 10.1136/bcr-2015-211214] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
ST-segment elevation myocardial infarction is an important, life-threatening diagnosis that requires quick diagnosis and management. We describe the case of an 83-year-old man with coronary artery disease, ischaemic cardiomyopathy with left ventricular ejection fraction of 15%, newly diagnosed multiple myeloma that had an initial ECG showing ST-segment elevation in anterior leads V1-3 and ST-segment depression in lateral leads concerning for an ST-segment elevation myocardial infarction. Troponins were negative and his calcium was 3.55 mmol/L. It was thought that the ECG changes were not indicative of cardiac ischaemia but, rather, hypercalcaemia. He was treated with fluids, diuretics and zolendronic acid, with subsequent resolution of ST-segment changes. This case demonstrates that one must consider disease other than myocardial ischaemia as the culprit of ST-segment changes if physical examination and history do not point towards myocardial injury, as unnecessary invasive revascularisation procedures have inherent risks.
Collapse
Affiliation(s)
| | - Thein Tun Aung
- Department of Internal Medicine, Division of Cardiology, Wright State University, Dayton, Ohio, USA
| | - Ajay Agarwal
- Department of Cardiology, Veteran Affairs Medical Center, Dayton, Ohio, USA
| |
Collapse
|