Money Supply and the Informational Efficiency of the Stock Market in Korea : Evidence from an Alternative Methodology

Hatemi-J, Abdulnasser 세종대학교 국제경제연구소 2002 Journal of Economic Integration Vol.17 No.3

This article test for informational efficiency of the Korean stock market with respect to the money supply. By applying the bootstrap simulation techniques, the results show that the stock market is informationally efficient regarding monetary policy performed during the period 1978-2000. The sensitivity of the results is checked for by utilizing the generalized impulse respone functions and the generalized variance decompositions. The estimated results show that money supply does exert any significant on neither the first moment nor the second moment of the stock prices. This is interpreted as further empirical evidence for the efficient market hypothesis. The policy implication of the results is explained.

Money Supply and the Informational Efficiency of the Stock Market in Korea: Evidence from an Alternative Methodology

( Abdulnasser Hatemi J ) 세종대학교 경제통합연구소 (구 세종대학교 국제경제연구소) 2002 Journal of Economic Integration Vol.17 No.3

This article tests for informational efficiency of the Korean stock market with respect to the money supply. By applying the bootstrap simulation techniques, the results show that the stock market is informationally efficient regarding monetary policy performed during the period 1978-2000. The sensitivity of the results is checked for by utilizing the generalized impulse response functions and the generalized variance decompositions. The estimated results show that money supply does exert any significant effect on neither the first moment nor the second moment of the stock prices. This is interpreted as further empirical evidence for the efficient market hypothesis. The policy implication of the results is explained.

Foreign Aid and Economic Growth: New Evidence from Panel Cointegration

Abdulnasser Hatemi-J,Manuchehr Irandoust 중앙대학교 경제연구소 2005 Journal of Economic Development Vol.30 No.1

The relationship between foreign aid and economic growth is investigated for a panel of developing countries (Botswana, Ethiopia, India, Kenya, Sri-Lanka, and Tanzania) over the period 1974-1996. The results reveal that the variables contain a panel unit root and they cointegrate in a panel perspective. The long-run elasticities (close to one for most countries) show that foreign aid has a positive and significant effect on economic activity for each country in the sample. A policy implication which may be drawn from the study is that foreign capital flows can have a favorable effect on real income by supplementing domestic savings.

Concordance of Endoscopic Ultrasonography-Guided Fine Needle Aspiration Diagnosis with the Final Diagnosis in Subepithelial Lesions

Erkan Çağlar,İbrahim Hatemi,Deniz Atasoy,Gürhan Şişman,Hakan Şentürk 대한소화기내시경학회 2013 Clinical Endoscopy Vol.46 No.4

Background/Aims: In this study we aimed to determine the rate of concordance of endoscopic ultrasonography (EUS)-guided fine needle aspiration (FNA) diagnosis with the final diagnosis obtained by surgery or endoscopic resection and follow-up in upper gastrointestinal subepithelial lesions. Methods: We retrospectively studied patients with subepithelial lesions who underwent EUS at our center from 2007 to 2011. Results: We had a final diagnosis in 67 patients (mean age±SD, 51.23±12.48 years, 34.3% [23] female, 65.6% [44] male). EUS-FNA was performed in all of the patients. On-site pathology was not performed. In nine of the patients, the obtained material which was obtained was insufficient. The cytologic examination was benign in 31 and malignant in 27 of the patients. Based on the final diagnosis, the EUS-FNA had a sensitivity of 96%, a specificity of 100%, and a diagnostic yield of 85%. Conclusions: The diagnostic yield of EUS-FNA, in the absence of the on-site cytopathologist, is feasible for the diagnosis of subepithelial lesions of the upper gastrointestinal system.

Angiotensin-I converting enzyme gene polymorphism in Turkish type 2 diabetic patients

H . Arzu Ergen,Husrev Hatemi,Bedia Agachan,Hakan Camlica,Turgay Isbir 생화학분자생물학회 2004 Experimental and molecular medicine Vol.36 No.4

Non-insulin dependent diabetes melitus is often associated with some complications such as nephropathy, retinopathy and neuropathy. Genes of the renin angiotensin system are potential candidate genes for diabetic complications. We investigated the relationship betwen angio-phism in type 2 diabetic patients with and with-out diabetic nephropathy. Seventy five patients (25 type 2 diabetic patients with nephropathy, 50 type 2 diabetic patients without nephropathy) and 37 healthy controls were studied. Gene polymorphism of ACE was determined by PCR (polymerase chain reaction) amplification using allele-spesific primers. The frequencies of ACE D, ID and II genoypes among the patients with type 2 diabetic patients were found 48%, 42%, 10% whereas in control subjects, 27%, 60%, ing DD genotype without nephropathy increased 1.77 fold than control subjects (P< 0.05). There is no significant corelation between diabetic nephropathy and ACE gene polymorphism. But we found that ACE DD genotype increased significantly in type 2 diabetic patients com-pared to control subjects (P< 0.05).

Turkish PASE: Turkish Version of the Psoriatic Arthritis Screening and Evaluation Questionnaire

( Kadir Berat Oyur ),( Burhan Engin ),( Gulen Hatemi ),( Ali Asma ),( Zekayi Kutlubay ),( Nurgul Bulut ),( Server Serdaro?lu ),( Yalcın Tuzun ) 대한피부과학회 2014 Annals of Dermatology Vol.26 No.4

Background: Psoriatic arthritis (PsA) is an inflammatory arthritis associated with psoriasis and causes irreversible joint damage, unless detected early and treated with systemic drugs. Objective: There is no reliable tool for screening PsA among Turkish psoriasis patients. Therefore, we aimed to validate the psoriatic arthritis screening and evaluation (PASE) questionnaire in the Turkish. Methods: A 15-item Turkish PASE questionnaire was administered to 122 consecutive psoriasis patients who visited our dermatology clinic for routine evaluations. Then, the patients were evaluated for PsA by a rheumatologist who was blinded to the results of the questionnaire. Results: Among the 113 patients who participated in the study, 11.5% (13 of 113) had a diagnosis of PsA. The Turkish PASE total scores ranged from 15 to 67 (possible range, 15~75). The median total score was 49 (25th and 75th percentile, 36 and 50) for the PsA group and 35 (25th and 75th percentile, 27 and 42) for the non-PsA group. The median total score of the PsA group was significantly higher than that of the non-PsA group (p=0.33). The Turkish PASE total score of 44 distinguished PsA from non-PsA participants, with 62% sensitivity and 76% specificity. For further analysis of each question, we counted the responses according to symptoms (positive for “agree” and “strongly agree” and negative for “disagree” and “strongly disagree”), and the sensitivity ranged from 23% (third question of the functions subscale) to 77% (second question of the symptoms subscale, first and fifth questions of the functions subscale) and the specificity ranged from 51% (second question of the symptoms subscale) to 87% (fourth question of the functions subscale). No relation was found between the PASI scores and the presence (p=0.899) or absence (p= 0.941) of PsA, as well as between the PASI and PASE scores of each patient (p=0.961). Conclusion: Thirteen of the 15 items demonstrated significant test-retest reliability as assessed with the Spearman correlation coefficient (p<0.05). These results show that the Turkish version of the PASE questionnaire may be useful for identifying PsA patients for inclusion in trials; however, it is not a reliable tool for screening PSA patients in a dermatology clinic. (Ann Dermatol 26(4) 457~461, 2014)

Poster Session : PS 0762 ; Rheumatology ; Causes of Hospitalisation Among BehCet`s Syndrome Patients in a Rheumatology Center in Turkey

( Yesim Ozguler ),( Vedat Hamuryudan ),( Gulen Hatemi ),( Ayse Selcen Pala ),( Sebahattin Yurdakul ),( Hasan Yazici ) 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1

Background: We surveyed the causes and outcome of hospitalisations among Behcet Syndrome (BS) patients in a dedicated center. Methods: The records of all inpatients in our clinic between 2002-2011 were retrospectively reviewed to identify patients hospitalised with a diagnosis of BS. We reviewed both the inpatient and outpatient charts to identify the demographic and clinical features, causes of hospitalisation and outcome. We also contacted the patients to determine their current condition. Results: 178 BS patients (74% men, mean age 42. 9±11. 3) had been hospitalised for a total of 211 times during the last ten years. We were able to contact 104(58%) of them. The reasons for hospitalisation were directly related to BS organ involvement in 118(56%) and to complications in 93(44%). The most common BS related reasons were vascular involvement in 74/118(63%) (including 21 patients with pulmonary artery aneurysms, 10 with peripheral artery aneurysms and 11 with serious venous thrombosis such as vena cava superior and Budd-Chiari syndrome), neurologic involvement in 14/118(12%), gastrointestinal involvement in 6/118(5%) and eye involvement in 6/118(5%). Hospitalisations caused by complications of BS were infections in 39/93(42%), and other drug related adverse events in 15/93(16%). Neoplasias were diagnosed in 5 patients. Among the 178 patients, 16(9%) had died. Most common causes of death were vascular involvement (n=5), infections (n=4) and malignancies (n=4). Conclusions: Vascular involvement is the leading cause of hospitalisation among BS patients, followed by infections related to therapy. Adverse events related to immunosuppressives are problematic. The predominance of men among hospitalized patients underlines the more severe course of BS in this sex. The relatively low frequency of gastrointestinal involvement among hospitalisations is in line with our previous observation that this type of involvement is rare in our BS patients.

Iron Supplementation in Experimental Hyperthyroidism: Effects on Oxidative Stress in Skeletal Muscle Tissue

Hakki Oktay Seymen,Sabiha Civelek,Arzu Seven,Gunnur Yigit,Husrev Hatemi,Gulden Burcak 연세대학교의과대학 2004 Yonsei medical journal Vol.45 No.SUP

This study was designed to investigate the effects of iron supplementation on the parameters of oxidative stress in the skeletal muscle tissue of hyperthyroidism induced rats. Hyperthyroidism was found to cause an increase in thiobarbituric acid-reactive substances (TBARS) and copper zinc superoxide dismutase (Cu, Zn SOD) activity, but decreases in the glutathione-peroxidase (GSH Px) activity and glutathione (GSH). Iron supplementation caused an increase in TBARS and a decrease in GSH. Iron supplementation in hyperthyroid rats attenuated the hyperthyroid state, but lowered the plasma ferritin level, which is considered an indicator of thyroid hormone action. Iron supplementation caused no additional increase in the TBARS in hyperthyroid rats, ameliorated the decrease in GSH content and abolished the induction of Cu, Zn SOD. Our findings suggested no increase, but a decrease, in the risk of oxidative stress in iron supplemented hyperthyroid rats. Whether supplementation of iron would have similar effects in humans should be further investigated in clinical studies.