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Biomedical subjects

Muammer Bilir

Publications and source records attributed to Muammer Bilir.

17 recordsLinked to original sources

Mediterranean spotted fever: a review of fifteen cases.

We aimed to determine the following things: the frequency of patients with Mediterranean spotted fever (MSF) during the last 10 years among those patients admitted with fever and rash, their clinical features, and the factors predicting the diagnosis of MSF among patients admitted with fever and rash. Between 1993-2002, the files of all patients admitted to our hospital with fever and rash were collected. The clinical features and serologic results of the patients diagnosed with MSF were further investigated. The diagnosis of MSF was established by epidemiological and clinical features and also by the clinical response within 2 days after doxycycline treatment. During the previous 10 years, 140 patients were admitted with fever and rash, and 15 (10%; four females, 11 males; mean age: 41 years; range: 17-70) of them were diagnosed with MSF. Clinical features were as follows: fever (100%), rash (100%), myalgia and/or arthralgia (93%), headache (87%), petechiae (27%), tache noire (13%), leucocytosis (74%), thrombocytopenia (33%), and accelerated erythrocyte sedimentation rate (100%). In nine of these patients, the diagnosis of MSF was established by epidemiological and clinical features and was confirmed by serologic studies. As a complication, one patient developed facial paralysis. Six (40%) were given several antibiotics. In conclusion, MSF should be considered in the differential diagnosis when a patient is admitted with fever, maculopapular rash, headache, myalgia and/or arthralgia, especially in spring, summer, or autumn.

Adolescent↗

Reactive hypoglycemia in lean young women with PCOS and correlations with insulin sensitivity and with beta cell function.

Reactive hypoglycemia (RH), which is a postprandial hypoglycemic state, occurs within 2-5 h after food intake. It is classified as idiopathic, alimentary, or diabetic reactive hypoglycemia. We studied the incidence of reactive hypoglycemia and looked for any correlations between it and the presence of insulin sensitivity and/or beta cell function in young lean polycystic ovary syndrome (PCOS) patients. This study was designed as a cross-sectional study in 64 lean young women with PCOS (BMI < or = 25 kg/m2). Various indices of insulin sensitivity and beta cell function derived from the oral glucose tolerance test (OGTT) results were used. We found the rate of RH to be 50% in lean young women with PCOS. DHEA-S and PRL levels were found to be lower in subjects with RH (P < 0.05 and P > 0.05, respectively). Beta cell function indices such as the insulinogenic index (at 120 min), CIR (at 120 min) and HOMA beta cell index were found to be insignificantly higher in the RH group than the nonreactive hypoglycemia (NRH) group. The 4 h glucose level, but not the 3 h glucose level, was significantly correlated with insulin resistance indices, such as fasting insulin level, HOMA-IR, Quicky index, and FIRI in the RH group. Significantly decreased DHEA-S levels were an interesting finding. In conclusion, there is an urgent need to investigate RH in lean young women with PCOS. Our results indicate that more definite insulin resistance occurs in subjects with RH in the fourth hour of the OGTT than those with RH in the third hour. In addition, RH in the fourth hour together with a low DHEA-S level may be predictive of future diabetes in young women with PCOS even when they are not obese.

Adult↗

Comparison of various simple insulin sensitivity and beta-cell function indices in lean hyperandrogenemic and normoandrogenemic young hirsute women.

OBJECTIVE: To assess and compare various simple insulin sensitivity and beta-cell function indices in lean, hirsute, young women. DESIGN: Prospective study. SETTING: Departments of endocrinology and metabolism at a university and a state hospital. PATIENT(S): Seventy-one hirsute young women were classified as hyperandrogenemic or normoandrogenemic. MAIN OUTCOME MEASURE(S): Insulin sensitivity and beta-cell function indices derived from a single sample and an oral glucose tolerance test (OGTT). RESULT(S): Lean hyperandrogenemic hirsute women have insulin resistance and increased beta-cell function. The most sensitive indices of insulin resistance were total and 1-hour and 2-hour post-challenge insulin levels during OGTT. When a cut-off value of 3.2 or greater for homeostasis model assessment of insulin resistance (HOMA-IR) was accepted, 46% of hyperandrogenemic women and 30% of normoandrogenemic women were insulin resistant. Fasting insulin level was best correlated with the fasting insulin resistance index, HOMA-IR, and Quicky index. The HOMA-IR was best correlated with fasting insulin level and the hepatic insulin sensitivity index (ISI(HOMA)). CONCLUSION(S): Insulin levels based on OGTT are the most useful index of insulin resistance and beta-cell function index in hirsute women. The HOMA-IR may be a proposed global test for insulin resistance; it correlated well with both OGTT-derived insulin resistance and beta-cell function indices and with global insulin resistance indices derived from a single sample (such as ISI (HOMA), Quicky index, FIRI(-1), fasting Belfiore index, and glucose/insulin ratio).

Adult↗

The sensitivity and specificity of Brucella agglutination tests.

Brucellosis is a systemic infectious disease caused by Gram-negative bacilli, the genus Brucella, and clinical features are diverse. Therefore, several infectious and non-infectious diseases are considered in its differential diagnosis. In this study, we aimed to determine the positivity rate of Brucella agglutination tests in the culture-positive brucellosis and in diseases mimicking brucellosis clinically.Thirty patients with culture-positive brucellosis, and 280 patients with the diseases mimicking brucellosis clinically (20 with miliary tuberculosis, 33 with malaria, 20 with typhoid fever, 20 with adult-onset Still's disease, 47 with systemic lupus erythematosus, 50 with rheumatoid arthritis, 27 with sarcoidosis, and 63 with active lymphoma) were included in the study. Brucella agglutination tests (Rose-Bengal and Wright) were studied in serum samples of these 310 patients. Both Rose-Bengal and Wright tests (the latter in a titer of 1/160 or higher) were positive in all patients with brucellosis. For the other diseases, the test was slightly positive (1/40) in one patient with malaria and another with non-Hodgkin's lymphoma, and weakly positive (1/20) in a patient with typhoid fever. It remained negative in the remaining. In conclusion, agglutination tests currently used in the diagnosis of brucellosis are very sensitive and specific. Brucellosis can be effectively excluded from the diseases having similar clinical features by the use of agglutination tests.

Agglutination Tests↗

Acute viral cholecystitis due to hepatitis A virus infection.

Acute hepatitis A virus (HAV) infection is frequent in developing countries. Although some gallbladder abnormalities are defined during the course, an acute cholecystitis is extremely rare. We here report 2 additional cases of cholecystitis due to acute HAV infection and review the previously reported 2 cases. One of our patients was admitted with jaundice and a suspicious portal mass with a presumed diagnosis of cholagiocarcinoma. The other presented with jaundice, abdominal pain, and constitutional symptoms. Both patients were planned to be operated on. During the follow-up, absence of fever, leukocytosis, acute-phase protein response, and calculus in biliary system were against the diagnosis of a bacterial cholecystitis. Moreover the course of cholecystitis was closely parallel to that of the HAV infection. Both patients were managed conservatively. It was concluded that rare, acute viral cholecystitis can develop during the course of acute HAV infection.

Acute Disease↗

Primary antiphospholipid syndrome: a cause of fever of unknown origin.

Antiphospholipid syndrome (APS) is defined as the occurrence of thrombosis, recurrent miscarriage, or both in association with laboratory evidence of persistent antiphospholipid antibodies. Owing to protean manifestations and laboratory studies, the diagnosis may be difficult. Because the other signs and symptoms of thrombosis are predominant, prolonged fever is not usually the main clinical finding. We describe a patient who presented with fever of unknown origin (FUO) and was found to have thromboses of the splenic vein, the superior mesenteric vein, and the portal vein due to the primary antiphospholipid syndrome. We also reviewed the medical literature (Medline 1966-2001), including the main FUO series of the previous 40 years, and laparotomy series for FUO. We conclude that although very rare, primary APS and thrombosis may present with FUO. APS should be considered in the differential diagnosis of prolonged fever associated with thrombosis.

Antiphospholipid Syndrome↗

The immunoglobulin and complement levels in the active pulmonary sarcoidosis.

BACKGROUND AND AIM: In sarcoidosis patients the circulating immune complex levels are raised with the activation of the disease but their diagnostic role is not clear. These circulating immune complexes contain complement and immunoglobulins (Ig). Complement and immunoglobulins are mostly accumulated in active sarcoid lesions and in circulating immune complexes. Thus complement and Ig levels in circulation will be reduced in active sarcoidosis patients due to their higher deposition in sarcoid lesions. We tried to make an estimation about the activity of the disease through measuring the IgG, IgA, and IgM and complement (C3-C4) levels in the serum. METHODS: Thirty-two (8 men) sarcoidosis patients (with their symptoms, chest x-ray graphies, bronchioalveolar lavage findings and the other related WASOG criteria) were divided into two groups as active and inactive cases. We measured with the immunodiffusion method the immunoglobulin and complement parameters of these two groups and compared them with each other. RESULTS: Compared to the active group the IgG and IgA in serum were significantly higher in the inactive group (p < 0.001, p=0.07 ). Although statistically not significant the IgM and C3, C4 levels were higher too in the inactive group. CONCLUSIONS: The IgG, IgA, IgM and the complement levels in serum are higher in the inactive group. We think that these findings might be useful for the follow up of the disorder's activity in sarcoidosis patients. In order to prove these finding studies with larger volume are needed.

Adolescent↗

The diagnosis of brucellosis by use of BACTEC 9240 blood culture system.

The diagnosis of brucellosis is generally made when a standard tube agglutination titer of 1/160 or more for anti-Brucella antibodies in the presence of compatible clinical signs and symptoms. However isolation of the organism from blood or bone marrow is the proof of the disease. In this study we aimed to describe the rate and duration of isolation of Brucella spp. from blood and bone marrow by use of automated blood culture system (BACTEC 9240). Between 1997 to 2001, 23 adults were diagnosed as brucellosis. Blood culture was obtained in all and simultaneous bone marrow culture in 18 and both specimens were cultured by BACTEC 9240. Brucella was isolated from blood and bone marrow cultures in 19 (82.6%) and 13 (81.2%) respectively. All positive blood cultures yielded within 7 days and bone marrow cultures in 4 days. We concluded that automated BACTEC culture systems can isolate Brucella spp. in a fast and efficient way.

Adult↗

A rare cause of focal segmental glomerulosclerosis: sarcoidosis.

A 58-year-old female patient diagnosed as having sarcoidosis 23 years ago developed nephrotic syndrome. No pathology was found which could explain this, so it was attributed to her sarcoidosis. Renal biopsy showed global and segmental sclerosis. The occurrence of focal segmentary glomerulosclerosis in a case of sarcoidosis is rare. In systemic sarcoidosis it is thought that T-cell dysfunction may play a role in the pathogenesis of glomerulonephritis. When treatment is considered, corticosteroid therapy may be used according to the clinical status at diagnosis as well as on follow-up of the patient.

Female↗

The role of antibiotic treatment alone for the management of Brucella endocarditis in adults: a case report and literature review.

Endocarditis is a rare complication of brucellosis but it is the main cause of the mortality in this disease. The accepted treatment for Brucella endocarditis (BE) is a combination of valve replacement and antibiotics. Conservative antibiotic treatment alone is not recommended by most of the authors as it is considered ineffective and increase the risk of fatality. In our literature search, we found 14 adult patients with BE treated only with antibiotics with a favorable outcome. In this report, we described a patient treated with antibiotics alone and reviewed the literature. Depending on the data from the growing literature and our patient we suggest that in selected patients with BE who do not have congestive heart failure, valvular destruction, abscess formation, or a prosthetic valve, conservative antibiotic treatment may be a valid alternative to surgery.

Anti-Bacterial Agents↗