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Profil bibliographique

Ahmet Toygar Kalkan

Informations fournies par OpenAlex. Research Africa ne déduit ni nationalité, ni poste, ni coordonnées personnelles.

27Publications signalées
56Citations signalées
1Affiliations récentes

Les institutions déclarées

Les domaines associés

Thyroid Disorders and TreatmentsThyroid Cancer Diagnosis and TreatmentBone health and osteoporosis researchGut microbiota and healthPituitary Gland Disorders and Treatments

Les publications récentes

Accès ouvert 2026 article OpenAlex

Diagnostic performance of procalcitonin/lactate ratio (PLR) and neutrophil-to-lymphocyte ratio (NLR) in predicting bacterial infection across different severities of diabetic ketoacidosis

ONUR GÖKÇE, Birsen Öztürk Gökçe, GÖKNUR YORULMAZ, Aysen Akalın et autres

Abstract Background Diabetic ketoacidosis is frequently accompanied by systemic inflammatory responses that complicate the early identification of bacterial infection. Methods We retrospectively analyzed 158 adult patients admitted with diabetic ketoacidosis and evaluated the diagnostic performance of the PLR(procalcitonin-to-lactate ratio) and the NLR …

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0 citations BMC Endocrine Disorders
Accès ouvert 2026 article OpenAlex

Vertebral fracture risk in patients with differentiated thyroid cancer receiving TSH-suppressive therapy

Dilek Gogas Yavuz, Ceyda Dincer Yazan, Zeliha Hekimsoy, Kadriye Aydın et autres

BACKGROUND: Suppression of thyroid-stimulating hormone (TSH) can adversely affect bone tissue in individuals with differentiated thyroid cancer (DTC). This study aims to examine bone mineral density (BMD) and vertebral fractures (VFs) in DTC patients receiving levothyroxine (LT4) suppression therapy. METHODS: A total …

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0 citations PubMed Central
Accès ouvert 2026 article OpenAlex

Vertebral fracture risk in patients with differentiated thyroid cancer receiving TSH-suppressive therapy

Dilek Gogaş Yavuz, Ceyda Dinçer Yazan, Zeliha Hekimsoy, Kadriye Aydın et autres

BACKGROUND: Suppression of thyroid-stimulating hormone (TSH) can adversely affect bone tissue in individuals with differentiated thyroid cancer (DTC). This study aims to examine bone mineral density (BMD) and vertebral fractures (VFs) in DTC patients receiving levothyroxine (LT4) suppression therapy. METHODS: A total …

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0 citations Endocrine Connections
2026 article OpenAlex

Body composition and cardiometabolic changes during gender-affirming hormone therapy: 12-month longitudinal study

Elif Seray Korkmaz, Ahmet Toygar Kalkan, Ayşen Akalın, Medine Nur Kebapci et autres

Background Testosterone therapy induces well-known changes in body composition in transgender men; however, its short-term cardiometabolic effects remain incompletely characterized. This study aimed to evaluate body composition and cardiometabolic changes during testosterone therapy over a 12-month period.Methods This retrospective observational study included …

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0 citations Endocrine Research
Accès ouvert 2026 article OpenAlex

P-098 MYXEDEMA COMA PRESENTING WITH PERICARDIAL EFFUSION: A CASE REPORT

GÖKNUR YORULMAZ, Bahar Gokce Sezgin Yuksel, Ömer Sahin Dedebagi, Ezgi Demirtaş Benli et autres

Abstract Introduction Myxedema coma is a rare but life-threatening endocrine emergency caused by long-standing untreated severe hypothyroidism. It is characterized by altered mental status, hypothermia, bradycardia, and hypotension. Mortality has been reported between 20% and 50%. Early recognition and rapid thyroid hormone …

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0 citations JCEM Case Reports
Accès ouvert 2026 conference-abstract OpenAlex

P-090 IS SURGERY ALWAYS NECESSARY FOR PITUITARY APOPLEXY?: A CASE REPORT OF PITUITARY APOPLEXY FOLLOWING A HYPERTENSIVE ATTACK

Ezgi Demirtaş Benli, Ahmet Toygar Kalkan, GÖKNUR YORULMAZ, Medine Nur Kebapçı

Abstract Introduction Pituitary apoplexy (PA) is an acute, potentially fatal clinical syndrome resulting from hemorrhage and/or infarction of the pituitary gland, which may require emergency surgery in some cases.The most common clinical complaint is severe headache, often accompanied by nausea, vomiting, visual …

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0 citations JCEM Case Reports
Accès ouvert 2026 conference-abstract OpenAlex

P-111 MEDIASTINAL METASTASIS OF PAPILLARY THYROID CARCINOMA UNDETECTED BY RADIOIODINE SCINTIGRAPHY: A CASE REPORT

Bahar Gokce Sezgin Yuksel, Ömer Sahin Dedebagi, Cansu Akgün, GÖKNUR YORULMAZ et autres

Abstract Introduction Papillary thyroid carcinoma (PTC) accounts for more than 90% of thyroid malignancies and generally has a good prognosis as a slow growing, differentiated thyroid cancer. In the postoperative follow-up of patients, serum thyroglobulin (Tg) and anti-Tg antibody levels, neck ultrasonography …

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0 citations JCEM Case Reports
Accès ouvert 2026 article OpenAlex

P-071 A CASE OF NORMOSMIC IDIOPATHIC HYPOGONADOTROPIC HYPOGONADISM WITH A KISS1R MUTATION PRESENTING WITH PARTIAL EMPTY SELLA

Cansu Akgün, Ahmet Toygar Kalkan, GÖKNUR YORULMAZ, Bahar Gokce Sezgin Yuksel et autres

Abstract Introduction Idiopathic hypogonadotropic hypogonadism (IHH) is a rare genetic disorder caused by defective hypothalamic GnRH secretion or impared GnRH action on pituitary gonadotropins. It is classified into two groups: Kallmann syndrome (KS) and normosmic IHH (NIHH). However, this condition occurs in …

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0 citations JCEM Case Reports
Accès ouvert 2026 article OpenAlex

O-28 HYPOPHOSPHATEMIC ONCOGENIC OSTEOMALACIA: A CASE REPORT

Elif Seray Korkmaz, GÖKNUR YORULMAZ, Aysen Akalın, Medine Nur Kebapçı et autres

Abstract Introduction Oncogenic osteomalacia is a rare paraneoplastic syndrome characterized by persistent hypophosphatemia. It can cause prolonged bone and muscle pain, muscle weakness, walking disturbances, and fragility fractures in adults. Various mesenchymal tumors such as hemangiopericytoma, osteosarcoma, and giant cell tumor can …

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0 citations JCEM Case Reports
Accès ouvert 2026 conference-abstract OpenAlex

P-028 ATYPICAL FEMUR FRACTURE AFTER DENOSUMAB TREATMENT: A CASE REPORT

Ezgi Demirtaş Benli, Ahmet Toygar Kalkan, GÖKNUR YORULMAZ, Medine Nur Kebapçı

Abstract Introduction Osteoporosis is a metabolic bone disease characterized by decreased bone mineral density and deterioration of bone microarchitecture, leading to an increased risk of fractures. Antiresorptive drugs are the first choice for treatment. Atypical femoral fractures (AFF) are a rare complication …

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0 citations JCEM Case Reports
Accès ouvert 2025 article OpenAlex

Intestinal Microbiota Composition in Patients with Type 2 Diabetes and Effects of Oral Antidiabetics

Ahmet Toygar Kalkan, Göknur Yorulmaz, Ayşen Akalın, Ener Çağrı Dinleyici

Introduction: The cause–effect relationships between microbiota composition changes and type 2 diabetes (T2D) are complex, likely involving two-way interactions, and require further elucidation. Few studies have examined the interactions of antidiabetic drugs with the gut microbiota. This study’s goal was to evaluate …

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5 citations Journal of Clinical Medicine
Accès ouvert 2025 article OpenAlex

O-09 A CASE OF INSULINOMA FOLLOWED BY MEDICAL TREATMENT WITH HIGH RISK OF SURGERY

Medine Nur Kebapçı, Göknur Yorulmaz, Ahmet Toygar Kalkan

Abstract Introduction Insulinoma is a rare neuroendocrine tumor originating from pancreatic beta cells. Insulinomas occur in 1-4 per million in the general population and represent 1-2% of all pancreatic neoplasms. They are usually sporadic but can also be associated with multiple neoplasia …

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0 citations JCEM Case Reports

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