Gene/Protein Disease Symptom Drug Enzyme Compound
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Table salt can now be fortified with iodine and iron without interaction and without loss of potency. According to Levente Diosady, professor of Food Engineering at the University of Toronto, the amounts of the two micronutrients available to the human body have been significantly reduced when the two interacted. In the new technology, the iodine is covered with a dextrin (a water soluble starch) capsule that serves as a physical barrier to the iron. Micronutrient Initiative (an international secretariat based at IDRC that works to eliminate health problems resulting from iron, iodine, and vitamin A deficiencies) and IDRC supported the development of the technology. The efficiency of absorption of the two micronutrients in the new double fortified salt in the human body is being tested at the Hospital for Sick Children in Toronto. Later testing will be conducted by University of Ghana scientists in IDRC-funded trials that will focus on women and their families in areas of Ghana where these deficiencies are endemic. Iodine is part of thyroid hormone, which contributes to brain development in the fetus and regulates human metabolism; iodine deficiency is the most frequent cause of preventable mental retardation. Related disorders include lethargy, physical disabilities, goiter, stillbirth, and neonatal death. Iron deficiency, the most common nutritional problem in the world (particularly among women, infants, and children), is associated with anemia, fatigue, learning problems, pregnancy complications, premature births, and maternal mortality. The two deficiencies together affect more than one-third of the world's population. Approximately 1.6 billion people, in more than 100 countries, live in areas where iodine is not available in sufficient amounts; those most at risk include about one-third of China's population. It is also a severe problem in the Himalayas, the Andes, India, and West Africa.
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PMID:Micronutrient deficiencies. Reports from the field -- Africa. 1229 Mar 27

A 46-year-old woman with clinical diagnosis of Riedel's thyroiditis was admitted to our Department, presenting with dyspnea, dysphagia, fatigue, and hoarseness. Previously, she had been diagnosed with Hashimoto's thyroiditis and hypothyroidism. The disease had a progressive course and had lasted for a year before the definitive diagnosis of Riedel's thyroiditis was confirmed and treated with methylprednisolone, 12 mg daily, without success. We started therapy with tamoxifen, 10 mg twice a day, together with methylprednisolone, 16 mg daily, and L-thyroxin substitution therapy. The follow-up lasted for one year. Treatment with tamoxifen led to a significant subjective improvement and objective changes, confirmed by regular clinical examinations, ultrasonography, and computed tomography of the neck. After 8 months of therapy, the patient had no compression symptoms and goiter decreased in estimated weight from 105 g to 63 g according to ultrasound measurements. The patient underwent partial thyroidectomy at 10 months after diagnosis of Riedel's thyroiditis. Histopathology confirmed the diagnosis of Riedel's thyroiditis. Our report indicates that tamoxifen can be a valuable drug therapy in the treatment of Riedel's thyroiditis.
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PMID:Riedel's thyroiditis treated with tamoxifen. 1269 18

A 14-year-old girl was admitted because of general fatigue and cervical lymphadenopathy. She showed bilateral struma (IInd degree) and enlargement of her left cervical lymph nodes. Laboratory data revealed neutropenia (219/microliter) and thrombocytopenia (Plt 5.1 x 10(4)/microliter) with mild anemia (Hb 11.1 g/dl), and the bone marrow aspirate and biopsy specimens showed hypocellularity. In addition, auto-antibodies against thyroid peroxidase (TPO) and thyroglobulin (TG) were highly elevated. Computed tomography of the neck showed a nodule in the left thyroid lobe with marked lymphadenopathy, and fine needle aspiration biopsy demonstrated papillary thyroid carcinoma with Hashimoto's thyroiditis and metastasis to the lymph nodes. One month after left thyroid lobectomy and cervical lymphadenectomy, the patient's condition progressed to very severe aplastic anemia, and she received immunosuppressive therapy consisting of cyclosporin A and anti-thymocyte globulin. Hematologically, partial and complete responses were obtained three and six months later, respectively. Of interest, anti-TPO and TG antibody titers remarkably decreased after immunosuppressive therapy. The patient had HLA-DR 2(DRB 1*1501) and DR 8(DRB 1*0802). The former is frequently found in patients with cyclosporin A-dependent aplastic anemia, and the latter is frequently found in Asian patients with Hashimoto's thyroiditis, suggesting an underlying autoimmune background for the simultaneous outbreak of aplastic anemia and Hashimoto's thyroiditis complicated by thyroid carcinoma.
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PMID:[Development of severe aplastic anemia in a girl with Hashimoto's thyroiditis and papillary thyroid carcinoma]. 1282 8

Subclinical hypothyroidism is associated with aspecific complaints such as tiredness, cognitive and depressive complaints, subtle disturbances in lipid values, an increased risk of cardiovascular disease, ovulatory dysfunction and a negative effect on foetal psychomotor development and pregnancy outcome. Subclinical hyperthyroidism is associated with atrial fibrillation, osteoporosis and dementia. Not enough prospective randomised studies with hard outcomes are available to provide evidence-based general recommendations. Therefore, the decision as to whether or not a patient should be treated needs to be made on an individual basis. For subclinical hypothyroidism it is advisable to consider treatment in the case of positive thyroid peroxidase antibody tests, a TSH concentration higher than 10 mU/l, the presence of one or more risk factors for cardiovascular disease, infertility on the basis of ovulatory dysfunction, and pregnancy. In the case of complaints of tiredness and certainly in the case of depression or cognitive dysfunction, a 3-month trial treatment can be considered. This leads to a decrease of the complaints in about 25% of cases. As negative effects are associated with the treatment, we advise an expectant approach in all other cases with a yearly monitoring of the TSH concentration. For subclinical hyperthyroidism it is advisable to consider treatment in the case of a nodular goitre, and especially in the case of atrial fibrillations. If subclinical hyperthyroidism persists in the absence of nodular thyroid disease, an expectant approach appears to be justified.
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PMID:[Subclinical functional disorders of the thyroid gland]. 1284 32

Often patients in whom there is little to suggest myxedema or cretinism have subclinical hypothyroidism. Once the condition is suspected, it can be diagnosed by determination of protein-bound iodine and, if the PBI is low, by response to therapy with thyroid hormone. Patients in the following categories should have protein-bound iodine determination: Those having (1) a history of previous treatment for hypothyroidism; (2) suboptimal development in children; (3) ovarian dysfunction, infertility, habitual abortion or unusual menopausal disorders; (4) symptoms of malaise and debility, such as undue fatigue, somnolence, mental asthenia and anxiety; (5) unexplained anemia; (6) colloid goiter, adenomatous goiter and cancer of the thyroid gland. If hypothyroidism is diagnosed, administration of thyroid hormone in increasing amounts, as determined by serial serum PBI tests, should be carried out indefinitely. Instruction of the patient is essential.
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PMID:Subclinical hypothyroidism. Recognition and treatment. 1398 2

We report the case of a 61-year-old female, who presented with a history of chronic fatigue, dyspnea on exertion, a widened mediastinum with tracheal deviation on chest X-ray, and a neck mass. After a diagnostic workup, the patient was found to have a paratracheal mass extending into the chest in addition to a 6.5 cm ascending aortic aneurysm with aortic insufficiency, and a 70% stenosis of the right coronary artery. She underwent successful resection of a substernal goiter via a neck incision facilitated by a previously performed sternotomy for a concomitant ascending aortic root replacement and a bypass utilizing the RIMA to the distal RCA.
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PMID:Management of an ascending aortic aneurysm with coronary artery disease and tracheal compression from a substernal goiter. 1572 45

In a retrospective study of 309 cases of hypothyroidism seen at King Fahd Hospital of the University (KFHU), Al-Khobar, 124 (90 Saudis and 34 non-Saudis) adult patients with spontaneous primary hypothyroidism satisfied the inclusion criteria for detailed analysis. Their male:female ratios for Saudis and non-Saudis were 1:4.6 and 1:3.9 respectively. The majority were diagnosed in their third and fourth decades. The prevalence of previously undiagnosed spontaneous and biochemically overt primary hypothyroidism in Saudis was 5.2/1000 females and 0.94/1000 males. FT4I was normal in 43 (35%) and low in 81 (65%). FT4I correlated with cold intolerance, constipation, dry skin, hoarseness, delayed reflex relaxation, and coarse and cold skin. In rank order, presenting symptoms in those with low FT4I were tiredness (56%), cold intolerance (38%), constipation, weight gain, menstrual disturbance - especially amenorrhea - (36% each), dry skin (35%), hoarseness (31%); signs were coarse skin (53%), delayed reflex relaxation (32%), cold skin and goiter (24% each). The above clinical findings may help physicians in the early detection of primary hypothyroidism. Population-based studies are necessary to provide more data on this disease in this country.
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PMID:Clinical presentation of spontaneous primary hypothyroidism in adults. 1758 25

A 24-year-old woman complained of tiredness, sensitivity to cold, and feelings of depression. A diagnosis of hypothyroidism based on decreased 24 h urinary T3 and T4 excretion was made, and she was treated with levothyroxin. No blood tests were done. She was referred with the question if she had other endocrine disorders. Her periods were regular, and on physical examination no abnormalities except slight acne were found. Similarly, hypothyroidism was diagnosed by decreased thyroid hormone excretion in 24 h urine, again without blood tests, in a 68-year-old woman whose mother had a goitre, and who had already been prescribed liothyronine. She had no complaints, and physical examination was unremarkable. The thyroid gland was not palpable. Thyroid peroxidase antibodies were absent in both patients. After discontinuation of medication with thyroid hormones they both remained euthyroid. It is concluded that thyroid disease did not exist in those 2 patients. Measurement of 24 h urinary T3 and T4 excretion is not an accurate diagnostic test for hypothyroidism.
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PMID:[Determining the thyroid hormones T3 and T4 in the urine: an unreliable test for hypothyroidism]. 1871 24

A hiccup is involuntary, paroxysmal inspiratory movements of the chest wall associated with diaphragm and accessory respiratory muscle contractions, with the synchronized closure of glottis. The mechanism underlying this common primitive reflex plays an important role in protecting airways against esophageal aspiration. The hiccup reflex mechanism is based on the afferent pathway (vagus and phrenic nerve and sympathetic fibers innervating chest organs, the abdomen, the ear, the nose and the throat stimulation, and the stimulation of hiccup center in the central nervous system, mainly reflecting psychogenic or metabolic disorders) and the efferent pathway (phrenic nerves). An incidental hiccup is a common problem, usually resolves spontaneously and does not present a clinical issue. The clinical issue arises in the case of pathologic persistent hiccups or symptomatic secondary hiccups which may lead to significant fatigue, insomnia or depression. Generally, pathologic hiccups are associated with considerable discomfort concerning both the "stigmatized" person and his or her personal surroundings in which it evokes different emotions, from amusement through impatience to uneasiness and the suggestion of a medical visit as an expression of concern for a given person. The most common causes of pathologic symptomatic hiccups are nervous system diseases, either the central nervous system (proliferative, angiogenic, inflammatory disorders), or the peripheral nervous system: the irritation of the phrenic nerve (proliferative disorders, goitre) and the vagus nerve (otolaryngologic diseases, meningitis, esophageal, stomach and duodenal diseases, hepatitis, pancreatitis, enteritis). The vagus nerve irritation with subsequent hiccups may be caused by chest disorders (injury, surgery) and heart diseases (myocardial infarction). In the present paper we describe the case of a 62-year-old male with recurrent hiccups associated with exertion as a secondary symptom of myocardial ischemia.
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PMID:Hiccups as a myocardial ischemia symptom. 1847 62

Type 1 diabetes mellitus (T1DM) results from autoimmune destruction of insulin-producing beta cells and is characterised by the presence of insulitis and &and beta-cell autoantibodies. Up to one third of patients develop an autoimmune polyglandular syndrome. Fifteen to 30% of T1DM subjects have autoimmune thyroid disease (Hashimoto's or Graves' disease), 5 to 10% are diagnosed with autoimmune gastritis and/or pernicious anaemia (AIG /PA), 4 to 9% present with coeliac disease (CD), 0.5% have Addison's disease (AD), and 2 to 10% show vitiligo. These diseases are characterised by the presence of autoantibodies against thyroid peroxidase (for Hashimoto's thyroiditis), TSH receptor (for Graves' disease), parietal cell or intrinsic factor (for AIG /PA), tissue transglutaminase (for CD), and 21-hydroxylase (for AD). Early detection of antibodies and latent organ-specific dysfunction is advocated to alert physicians to take appropriate action in order to prevent full-blown disease. Hashimoto's hypothyroidism may cause weight gain, hyperlipidaemia, goitre, and may affect diabetes control, menses, and pregnancy outcome. In contrast, Graves' hyperthyroidism may induce weight loss, atrial fibrillation, heat intolerance, and ophthalmopathy. Autoimmune gastritis may manifest via iron deficiency or vitamin B12 deficiency anaemia with fatigue and painful neuropathy. Clinical features of coeliac disease include abdominal discomfort, growth abnormalities, infertility, low bone mineralisation, and iron deficiency anaemia. Adrenal insufficiency may cause vomiting, anorexia, hypoglycaemia, malaise, fatigue, muscular weakness, hyperkalaemia, hypotension, and generalised hyperpigmentation. Here we will review prevalence, pathogenetic factors, clinical features, and suggestions for screening, follow-up and treatment of patients with T1DM and/or autoimmune polyglandular syndrome.
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PMID:Type 1 diabetes and autoimmune polyglandular syndrome: a clinical review. 2000 14


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