Thyroid Diseases: Muller AF

Muller AF, Berghout A, Wiersinga WM, Kooy A, Smits JW, Hermus AR, Anonymous00181. · Diakonessenhuis Utrecht, Utrecht, the Netherlands. · Neth J Med. · Pubmed #18349473 links to  free full text

Abstract: Thyroid function disorders are common with a female to male ratio of 4 to 1. In adult women primary hypothyroidism and thyrotoxicosis have a prevalence of 3.5/1000 and 0.8/1000, respectively. This guideline is aimed at secondary care providers especially internists, but also contains relevant information for interested general practitioners and gynaecologists. A multidisciplinary working group, containing delegates of professional and patient organisations, prepared the guideline. According to principles of 'evidence-based medicine' available literature was studied and discussed. Considering the availability and quality of published studies a practical advice was formulated. For a full overview of the literature and considerations the reader is referred to the original version of the guideline (accessible through NIV-net). In this manuscript we have aimed to provide the practicing internist with practical and 'as evidence-based as possible' treatment guidelines with respect to thyroid function disorders.

Muller AF, Berghout A. · Department of Internal Medicine, Diakonessenhuis Utrecht, Utrecht, The Netherlands. · Minerva Endocrinol. · Pubmed #14605606 No free full text.

Abstract: Autoimmune thyroiditis has important consequences for fertility, the occurrence of pregnancy complications, pregnancy outcome. Moreover autoimmune thyroiditis can aggravate during the postpartum period. Finally, the sequelae of autoimmune thyroiditis might have important consequences for the offspring. Several studies have shown an association between thyroid autoimmunity in earlyas opposed to beforepregnancy and subsequent "incidental" miscarriage. With respect to habitual abortion available data are more conflicting perhaps mild degrees of thyroid insufficiency - not detectable by routine thyroid testing - and not thyroid autoimmunity per se is causal in the association between the presence of thyroid antibodies and recurrent abortion. Autoimmune hypo- and hyperfunction during pregnancy are both related to obstetrical complications. It is important to note that treatment can - at least in part - reduce this excess risk associated with untreated hypo- or hyperthyroidism. Considering pregnancy outcome there are now data providing evidence that not only overt but also relatively mild and hitherto unrecognized states of thyroid failure are associated with persistent and significant impairment in neuropsychological performance of the offspring. Postpartum thyroiditis is clearly associated with the presence of TPO antibodies (i.e. autoimmune thyroiditis). Autoimmune thyroiditis is thus clearly associated with clinically relevant events, occurring before, during and after pregnancy. Screening should be considered; however further research is urgently needed.

Muller AF, Drexhage HA, Berghout A. · Department of Immunology, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands. · Endocr Rev. · Pubmed #11588143 links to  free full text

Abstract: Postpartum thyroiditis is a syndrome of transient or permanent thyroid dysfunction occurring in the first year after delivery and based on an autoimmune inflammation of the thyroid. The prevalence ranges from 5-7%. We discuss the role of antibodies (especially thyroid peroxidase antibodies), complement, activated T cells, and apoptosis in the outbreak of postpartum thyroiditis. Postpartum thyroiditis is conceptualized as an acute phase of autoimmune thyroid destruction in the context of an existing and ongoing process of thyroid autosensitization. From pregnancy an enhanced state of immune tolerance ensues. A rebound reaction to this pregnancy-associated immune suppression after delivery explains the aggravation of autoimmune syndromes in the puerperal period, e.g., the occurrence of clinically overt postpartum thyroiditis. Low thyroid reserve due to autoimmune thyroiditis is increasingly recognized as a serious health problem. 1) Thyroid autoimmunity increases the probability of spontaneous fetal loss. 2) Thyroid failure due to autoimmune thyroiditis-often mild and subclinical-can lead to permanent and significant impairment in neuropsychological performance of the offspring. 3) Evidence is emerging that as women age subclinical hypothyroidism-as a sequel of postpartum thyroiditis-predisposes them to cardiovascular disease. Hence, postpartum thyroiditis is no longer considered a mild and transient disorder. Screening is considered.

Muller AF, Verhoeff A, Mantel MJ, Berghout A. · Department of Internal Medicine, Zuiderziekenhuis Rotterdam, The Netherlands. · Fertil Steril. · Pubmed #9935112 No free full text.

Abstract: OBJECTIVE: To determine whether an association exists between the presence of thyroid peroxidase (TPO) antibodies before pregnancy and miscarriage in women without a history of habitual abortion. DESIGN: Prospective study and nested case-control study. SETTING: Inner-city teaching hospital. PATIENT(S): Four hundred eighty-nine women in an IVF program. INTERVENTION(S): In the prospective study, we measured levels of TPO antibodies and TSH. In the nested case-control study, we also measured levels of anticardiolipin antibodies. MAIN OUTCOME MEASURE: Miscarriage. RESULT(S): One hundred seventy-three women were observed, of whom 31% (54/173) became pregnant. Pregnancy occurred in 48% (12/25) of the antibody-positive women and in 28% (42/148) of the antibody-negative women. Among those who became pregnant, miscarriage occurred in 33% (4/12) of TPO antibody-positive women and in 19% (8/42) of TPO antibody-negative women. The TSH level was abnormal (<0.2 microIU/mL) in only one of the TPO antibody-positive women who miscarried. The presence of anticardiolipin antibodies was not associated with miscarriage. CONCLUSION(S): No association was found between the presence of TPO antibodies before pregnancy and miscarriage in women without a history of habitual abortion. The presence of TPO antibodies did not adversely affect a woman's chances of becoming pregnant.

de Ruijter SH, van Dalen T, Muller AF. · Diakonessenhuis Utrecht. · Ned Tijdschr Geneeskd. · Pubmed #16808361 No free full text.

Abstract: A man aged 80 and three women aged 66, 26, and 39 years respectively, underwent surgery for Graves' disease. The first woman had pneumonia and experienced thyrotoxic storm. Euthyroidism was restored with antithyroid drugs (ATD) and thyroidectomy was performed as ablative treatment for hyperthyroidism. The man presented with thyrotoxicosis and had severe Graves' ophthalmopathy. After euthyroidism was restored with ATD, he underwent subtotal thyroidectomy. The second woman presented with severe thyrotoxicosis but was allergic to ATD. She was treated with iodine and beta-blockers after which subtotal thyroidectomy was done as an ablative procedure. Medical treatment for hyperthyroidism failed in the last patient and, as she had experienced severe psychological disturbances during a previous relapse, she too chose surgery as a definitive treatment option. In two patients the postoperative course was complicated by early hypocalcaemia and one of these patients experienced temporary recurrent laryngeal nerve paralysis. Surgery has a limited role in the treatment of Graves' disease. In pregnant women with severe ATD-resistant thyrotoxicosis, surgery is the only treatment option, while in patients with Graves' orbitopathy surgery may be preferable because of its neutral and perhaps even beneficial effects on eye symptoms. Large goitre size and thyroid nodules are concomitant reasons for choosing surgery, as are allergy to ATD and patients' preference. Lastly, in patients who have suffered from severe thyrotoxicosis, surgery provides rapid and definitive treatment. Early morbidity following surgery is common and should be discussed with the patient.

Santoe MF, Van Houten AA, Muller AF, Berghout A. · Medisch Centrum Rijnmond Zuid, locatie Zuider, afd. Interne Geneeskunde, Groene Hilledijk 315, 3075 EA Rotterdam. · Ned Tijdschr Geneeskd. · Pubmed #15326651 No free full text.

Abstract: A 27-year-old woman was first referred at the age of 14 with cosmetic complaints due to an echographically diffuse, euthyroid goitre. Tests for antibodies against thyroid peroxidase and thyroglobulin were positive. Thyroid-suppression therapy with levothyroxine resulted in regression of the goitre. At the age of 26 there was a transitory recurrence of the goitre during a pregnancy, during which time the thyroid peroxidase antibodies became strongly positive. Six months post partum the goitre recurred again, accompanied by pain in the throat and fever. The C-reactive protein level was strongly elevated. Serology established the diagnosis of viral thyroiditis due to a Coxsackie-B virus. The size of the goitre decreased after treatment with acetylsalicylic acid and prednisone. Two months later the goitre again showed further growth, now in association with cervical lymphadenopathy and an enlarged left parotid gland. Histology revealed a non-Hodgkin lymphoma of the type diffuse large B-cell (stage II), very likely a primary thyroid lymphoma. The lymphoma was refractory to cyclophosphamide-doxorubicin-vincristine-prednisolone (CHOP); this was followed by intensive chemotherapy and autologous stem-cell transplantation, resulting finally in a complete remission. The goitre disappeared and thyroid peroxidase antibodies were no longer detectable. Primary thyroid lymphoma is a rare disease, but autoimmune thyroiditis appears to be an important predisposing factor.

Walraven M, Wilmink HJ, de Boer LM, Muller AF. · Afd. Interne Geneeskunde, Diakonessenhuis Utrecht, Bosboomstraat 1, 3582 KE Utrecht. · Ned Tijdschr Geneeskd. · Pubmed #15141644 No free full text.

Abstract: In three patients gynaecomastia was diagnosed: a 22-year-old man with concomitant thyrotoxicosis due to an extensively metastasized extragonadal choriocarcinoma, a 53-year-old man with hypogonadism due to Klinefelter's syndrome that was biochemically obscured due to medications leading to elevated prolactin levels, and a 62-year-old man with acromegaly and secondary hypogonadism due to a mixed prolactin and growth hormone secreting pituitary adenoma. Gynaecomastia calls for thorough evaluation.