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1.
Future Microbiol ; 16: 697-702, 2021 07.
Article in English | MEDLINE | ID: mdl-34223786

ABSTRACT

Aim: COVID-19, caused by SARS-CoV-2, started in December 2019 and has spread across the world. Materials & methods: We analyzed real-time PCR results of 10,000 samples from 2 April to 30 May 2020 in three neighbor cities located in the East of Turkey. The final study population was 7853 cases, after excluding screening tests. Results: Real-time PCR was performed to detect the SARS-CoV-2-specific RNA-dependent-RNA-polymerase gene fragment. The number of total positive samples out of 7853 were 487; however, the number of nonrepeating positive patient was 373 (4.8%). Cough and fever were the most common symptoms in positive cases. Conclusion: Epidemiologic studies should be performed about the prevalence of SARS-CoV-2 infection to better understand the effect of the virus across the world.


Subject(s)
COVID-19/diagnosis , COVID-19/epidemiology , Adolescent , Adult , Aged , COVID-19/physiopathology , COVID-19/virology , COVID-19 Testing , Child , Child, Preschool , Cough/epidemiology , Cough/virology , Female , Fever/epidemiology , Fever/virology , Humans , Infant , Infant, Newborn , Male , Middle Aged , Prevalence , Real-Time Polymerase Chain Reaction , SARS-CoV-2/genetics , SARS-CoV-2/isolation & purification , Turkey/epidemiology , Young Adult
3.
J Vestib Res ; 27(4): 233-242, 2017.
Article in English | MEDLINE | ID: mdl-29081427

ABSTRACT

INTRODUCTION: Head impulse test (HIT) is the critical bedside examination which differentiates vestibular neuritis (VN) from posterior circulation stroke (PCS) in acute vestibular syndrome (AVS). Video-oculography based HIT (vHIT) may have aadditional strength in making the differentiation. METHODS: Patients admitted to the emergency department of a tertiary-care medical center with AVS were studied. An emergency specialist and a neurologist performed HIT. vHIT was conducted by an neuro-otology research fellow. RESULTS: Forty patients 26 male, 14 female with a mean age of 49 years were included in the analyses. Final diagnoses were VN in 24 and PCS in 16 patients.In the VN group, clinical HIT was assessed as abnormal in 19(80%) cases by the emergency specialist and in 20(83%) by the neurologist. In all PCS patients, HIT was recorded as normal both by the emergency specialist and the neurologist (100%).On vHIT, patients with VN had significantly low gain values for both the ipsilesional and contralesional sides when compared with the healthy controls, with significantly lower figures for the ipsilesional side (p < 0.001). All patients in this group had normal DWI-MRI.PCS patients had bilaterally low gain (p < 0.05) on vHIT. However, gain asymmetry was not significant. Subgroup analyses according to presence of brainstem involvement revealed bilateral low gain (p < 0.05) in patients with brainstem infarction (anterior inferior cerebellar artery-posterior inferior cerebellar artery stroke, AICA-PICA stroke) whereas patients with pure cerebellar infarction (posterior inferior cerebellar artery-superior cerebellar artery stroke, PICA-SCA stroke) had gain values similar to healthy controls.With a gain cut-off ≤0.75 and gain asymmetry cut-off ≥17%, as determined by ROC analysis, 100% of PCS patients and 80% of VN patients were correctly diagnosed. CONCLUSIONS: Clinical HIT, either performed by an emergency specialist or neurologist is equivalent to vHIT gain and gain asymmetry analysis as conducted by neuro-otologist in the diagnosis of PCS, albeit mislabeling about 20% of VN patients. vHIT does not appear to yield additional diagnostic information. These findings indicate the strength of clinical HIT. Pure gain-based vHIT analysis seems limited and needs to be incorporated with saccade analysis.


Subject(s)
Head Impulse Test/methods , Stroke/diagnosis , Stroke/physiopathology , Vestibular Diseases/diagnosis , Vestibular Diseases/physiopathology , Brain Stem/physiopathology , Cerebral Infarction/diagnosis , Cerebral Infarction/physiopathology , Cerebrovascular Circulation , Diagnosis, Differential , Emergency Medical Services , Female , Functional Laterality , Humans , Male , Middle Aged , Neurologists , Reproducibility of Results , Stroke/complications , Vestibular Diseases/etiology , Vestibular Neuronitis/diagnosis
4.
Balkan Med J ; 34(3): 255-262, 2017 May 05.
Article in English | MEDLINE | ID: mdl-28443572

ABSTRACT

BACKGROUND: Mucosal melanoma is a rare malignancy arising from melanocytes of the mucosal surfaces. The pattern and frequency of oncogenic mutations and histopathological biomarkers have a role on distinct tumour behaviour and survival. AIMS: To assess the rate of C-KIT positivity and its effect on survival of surgically treated sinonasal malignant melanoma patients with other histopathological biomarkers and clinical features. STUDY DESIGN: Retrospective cross-sectional study. METHODS: Seventeen sinonasal malignant melanoma patients with a mean age of 65.41 (39-86) years were included. Overall survival and disease-specific survival rates were calculated. The impact of age, gender, stage and extent of the disease, type of surgery, and adjuvant therapies were also taken into consideration. The effect of mitotic index, pigmentation, S100, HMB-45, Melan-A and C-KIT on survival were evaluated. RESULTS: Median tumour size was 20 mm (interquartile range=27.5 mm). Pigmentation was present in 7 (41.2%) cases. Median number of mitoses per millimetre squared was 11 (interquartile range=13). Melan A was positive in 7 (41.2%) patients, ulceration was present in 6 cases (35.3%), and necrosis was present in (47.1%) 8 cases. Six patients (35.3%) were positive for S100, 14 (82.4%) specimens stained positive for HMB-45 and C-KIT (CD117) was positive in 9 cases (52.9%). Three patients (16.7%) developed distant metastasis. Five year overall and disease free survival rates were 61.4% and 43.8%, respectively. CONCLUSION: Although C-KIT positive sinonasal malignant melanoma patients (52.9%) can be candidates for targeted tumour therapies, the studied clinical or histopathological features along with C-KIT seem to have no significant effect on survival in a small group of patients with sinonasal malignant melanoma.


Subject(s)
Melanoma/mortality , Melanoma/physiopathology , Paranasal Sinuses/physiopathology , Prognosis , Adult , Aged , Aged, 80 and over , Cross-Sectional Studies , Female , Humans , Male , Melanoma/diagnosis , Middle Aged , Proto-Oncogene Proteins c-kit/analysis , Proto-Oncogene Proteins c-kit/blood , Retrospective Studies , Survival Analysis , Tertiary Care Centers/organization & administration
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