PubMed Health⌕ Search

Biomedical subjects

N Ulusoy

Publications and source records attributed to N Ulusoy.

At least 19 recordsLinked to original sources
PubMed2006

[Name-based identification of cases of Turkish origin in the childhood cancer registry in Mainz].

Until now few analyses of routine data relating to the health of migrants have been conducted in Germany. A major obstacle is that most data sources do not provide reliable information on the origin of migrants. While some sources contain the nationality of persons registered, this information does not allow one to identify migrants who have taken up German citizenship, i.e., a substantial part of second-generation migrants. In this paper we demonstrate how a computer-aided, name-based algorithm can be used to identify persons of Turkish origin in the German Childhood Cancer Registry in Mainz, Germany. The performance of the algorithm, as assessed against the gold standard of assessing names manually, was very good (sensitivity and specificity > or = 0.975). In total, we identified 1774 of the 37,259 cases in the registry as being of Turkish origin. The name algorithm proved to be a useful tool to identify Turkish migrants in routine data sources, thus avoiding potential bias due to changes in citizenship. This approach aims at improving migrant-sensitive health reporting and research in Germany. In future, additional information on migrant status should be obtained already during primary data collection so that health data for all migrant groups can be provided.

Algorithms↗
PubMed2001

Synthesis and antimicrobial activity of some 1,2,4-triazole-3-mercaptoacetic acid derivatives.

Ethyl 5-(2-furyl)-4-ethyl-1,2,4-triazole-3-mercaptoacetate (2), 5-(2-furyl)-4-ethyl-1,2,4-triazole-3-mercaptoacetic acid hydrazide (3) and a series of new N-alkylidene/arylidene-5-(2-furyl)-4-ethyl-1,2,4-triazole-3-mercaptoacetic acid hydrazides (4a-f) were synthesized and evaluated for in vitro antibacterial activity against Staphylococcus aureus ATCC 6538. Staphylococcus epidermidis ATCC 12228, Klebsiella pneumoniae ATCC 4352, Pseudomonas aeruginosa ATCC 1539, Escherichia coli ATCC 8739, Shigella flexneri, Salmonella typhi, Proteus mirabilis and antifungal activity against Candida albicans ATCC 10231 using the disk diffusion and microdilution methods. Compound 4f showed antibacterial activity against some bacteria. The in vitro antimycobacterial activity of the new compounds against Mycobacterium tuberculosis H37Rv was evaluated employing the BACTEC 460 radiometric system. The highest inhibition observed was 61% at > 6.25 microg/ml.

Anti-Bacterial Agents↗
PubMed1999

Synthesis and preliminary anticonvulsant activity evaluation of new 2-thioxo-4,5-imidazolidinedione derivatives.

A series of 1-substituted benzylideneamino-2-thioxo-3-allyl-4,5-imidazolidinediones (2a-j) were synthesized by the cyclization of 1-substituted benzylidene-4-allylthiosemicarbazides (1a-j) with oxalyl chloride in anhydrous ethereal medium. The structures of 2a-j were confirmed by analytical and spectral data (IR, 1H-NMR and EIMS). All synthesized compounds were evaluated for anticonvulsant activity against maximal electroshock (MES) and subcutaneous pentylenetetrazole (ScMet) induced seizures. Among the compounds tested, 2b and 2h exhibited some activity in anticonvulsant identification (Phase I) trials in mice.

Animals↗
PubMed1998

Thrombophilia and inflammatory bowel disease: does factor V mutation have a role?

BACKGROUND: An increased tendency for thromboembolism is a well known problem of inflammatory bowel disease (IBD). Microvascular thrombosis has also been claimed as a pathogenic factor in IBD. Recently a point mutation in the gene coding factor V (FV Leiden) has been identified in various thromboembolic diseases, but the role in IBD is unknown. OBJECTIVE: To determine the frequency of FV Leiden in IBD patients and compare with a group of controls. METHODS: Sixty-three IBD patients [43 ulcerative colitis (UC) patients and 20 Crohn's disease (CD) patients] and 36 healthy controls were included in the study. Only one of the UC patients had a history of cerebral thromboembolism. The extracted DNA from frozen blood was subjected to polymerase chain reaction for the amplification of FV gene. The amplicons were hybridized both with the mutant and wild-type probes to detect FV mutation. Readings of optical density above 0.3 were considered as positive results. According to the patterns of ELISA, heterozygosity and homozygosity for normal and mutant alleles were determined. RESULTS: Eight (18%) of UC patients were heterozygous normal and one (2%) patient had homozygous mutation. Eight (45%) of the 20 CD patients had a heterozygous pattern and one (5%) had a homozygous pattern. In the control group four (11%) subjects showed a heterozygous genotype. FV Leiden was found to be statistically more frequent in CD patients (P < 0.005) (odds ratio 6.5, 95% confidence interval 1.3-18.), but not in the UC patients as compared with controls (P> 0.05). There was no significant correlation between FV Leiden presence and disease activity, gender or disease duration for both UC and CD. CONCLUSION: The results suggest that FV Leiden is more frequent in CD patients, but not in the UC patients as compared with controls. The high rate of factor V mutation in our CD patients suggests the need for further studies to confirm a relationship between this mutation and aetiology of the disease.

Adult↗
PubMed1996

Synthesis and anticonvulsant activity of new 3-[(2-furyl)carbonyl]amino-4-thiazolidinone and 2-[(2-furyl)carbonyl]hydrazono-4-thiazoline derivatives.

A series of new 2-aryl-3-[(2-furyl)carbonyl]amino-5-nonsubstituted/methyl-4-thi azolidinones (3) and 2-[(2-furyl)carbonyl]hydrazono-3-alkyl-4-aryl-4-thiazolines (5) was synthesized and evaluated for anticonvulsant activity against pentylenetetrazole induced seizures. Preliminary results indicated that potency was sensitive to substituents at the 2 and 5 positions of the 4-thiazolidinone and 3 and 4 positions of the 4-thiazoline rings. Among 3,2-(phenyl)/ (4-fluorophenyl)-3-[(2-furyl)carbonyl]amino-5-methyl-4-thiazolidinone s (3e and 3f) and among 5, 2-[(2-furyl)carbonyl]hydrazono-3-allyl-4-(4-bromophenyl)-4-thiazol ine (5e), showed the highest protection (40%).

Animals↗
PubMed1995

Synthesis and anticonvulsant activity of some new 1,1-bis(4-substituted 1,2,4-triazoline-5-thione-3-yl)-2-methylbutanes.

Several 1,1-bis(4-alkyl/aryl-1,2,4-triazoline-5-thione-3-yl)-2- methylbutane derivatives 13-21 were obtained from the cyclization of mono(1-methylpropyl)malonylbis(4-alkyl/aryl)thiosemicarbazides 2-12 in the presence of sodium hydroxide. Their chemical structures were proven by spectral data (UV, IR, 1H-NMR, MS) and elemental analysis. The anticonvulsant activity of the title compounds were determined against pentylenetetrazole induced seizures. Six of the tested compounds showed anticonvulsant activity (10 to 20% protection).

Animals↗
PubMed1992

Thermal response to multiple use of a twist drill.

The objective of the present investigation was to determine whether injurious thermal changes occur in the pulp chamber if a twist drill is used 10 times, and to find whether there is a correlation between temperature rise and distance between a drilled channel and the pulp chamber. Twenty caries-free, human, premolar teeth were randomly distributed to two dentists. With a new 2 mm twist drill, each dentist prepared 10 pinholes (one hole per tooth). Intrapulpal temperature change during the drilling procedure was recorded. The data were statistically analyzed by the Spearman rank order correlation coefficient. The results showed that twist drills should not be used for more than five pinholes (p less than 0.001). The distance between the pin channel and the pulp chamber does not influence heat generation in the pulp chamber.

Body Temperature↗
PubMed1991

Fracture durability of restored functional cusps on maxillary nonvital premolar teeth.

Palatal cusps of nonvital maxillary premolar teeth were restored with a coronal-radicular restoration of posterior composite resin (Occlusin), amalgam (Tytin), or cermet (Chelon-Silver). Mean fracture strength values were: 370 lb for intact premolar teeth, 266 lb for amalgam, 215 lb for posterior composite resin, and 132 lb for cermet. From this in vitro study it can be suggested that for selected endodontically treated maxillary premolar teeth, the dentist can use acid-etch-retained posterior composite resin or pin-retained high copper amalgam material for a definitive coronal-radicular restoration. The use of cermet for this purpose is contraindicated.

Bicuspid↗
PubMedDate not supplied

Synthesis and antimicrobial properties of new 4-(alkylidene/arylidene)- amino-5-(2-furanyl)-2,4-dihydro-3H-1,2,4-triazole-3-thiones and 6-aryl-3-(2-furanyl)-7H-1,2,4-triazolo[3,4-b][1,3,4]thiadiazines.

A series of 4-(alkylidene/arylidene)amino-5-(2-furanyl)-2,4-dihydro- 3H-1,2,4-triazole-3-thiones (2) and 6-aryl-3-(2-furanyl)-7H-1,2,4-triazolo[3,4-b][1,3,4]thiadiazines (3) were synthesized. The configuration of 2g was assigned on the basis of 1H-NMR data. Of the new derivatives tested, only 2b, 2g, and 4f were found to be active against Staphylococcus aureus and/or Staphylococcus epidermidis (MIC 125-1.95 micrograms/ml), whereas all exhibited varying degrees of antifungal activity (MIC 25-0.8 micrograms/ml).

Anti-Infective Agents↗
PubMedDate not supplied

5-Nitroimidazole derivatives as possible antibacterial and antifungal agents.

Some novel 1-[2-[[5-(2-furanyl)-4-substituted 4H-1,2,4-triazol-3-yl[thio[ethyl[-2-methyl-5-nitro-1H-imidazoles (3), 1-[3-[[5-(2-furanyl/2-thienyl)-4-substituted 4H-1,2,4-triazol-3-yl[-thio]-2-hydroxypropyl[-2-methyl-5-nitro-1H- imidazoles (5) and 1-[3-[(N,N-disubstituted thiocarbamoyl)-thio[-2-hydroxypropyl]-2-methyl-5-nitro-1H-imidazoles (7) were synthesized and evaluated for in vitro antibacterial and antifungal activity. Some of 5 were found to be effective against bacteria and fungi (minimum inhibitory concentration (MIC) 7.3-125 micrograms/ml), whereas 7 were found to be effective against fungi (MIC 3-25 micrograms/ml).

Anti-Bacterial Agents↗
PubMedDate not supplied

Synthesis and antimicrobial activity of new 6-phenylimidazo[2,1-b]thiazole derivatives.

A series of new N2-substituted-6-phenylimidazo[2,1-b]thiazole-3-acetic acid hydrazides (2a-j) were synthesized and evaluated for in vitro antimicrobial activity against various bacteria and fungi. Some of the compounds showed antimicrobial activity against Staphylococcus aureus ATCC 6538, Staphylococcus epidermidis ATCC 12228, Trichophyton mentagrophytes var. Erinacei NCPF-375, Trichophyton rubrum and Microsporum audounii (MIC 25-0.24 micrograms/ml). The in vitro antimycobacterial activity of the new compounds was also investigated. The compounds exhibited different degrees of inhibition (17.98%) against Mycobacterium tuberculosis H37Rv in the primary screen that was conducted at 12.5 micrograms/ml using the BACTEC 460 radiometric system.

Anti-Bacterial Agents↗
PubMedDate not supplied

Synthesis of some 4-(alkylidene/arylidene)amino-2,4-dihydro-5- (2-thienyl)-3H-1,2,4-triazole-3-thiones tested for antimicrobial activity.

A series of 4-(alkylidene/arylidene)amino-2,4-dihydro-5- (2-thienyl)-3H-1,2,4-triazole-3-thiones (2a-h) were synthesized. The structural elucidation of all the compounds was made on the basis of analytical and spectral data (IR, 1H-NMR and EIMS). All synthesized compounds were evaluated for in vitro antimicrobial activity against various bacteria and fungi. Some of the compounds demonstrated antimicrobial activity against Staphylococcus aureus ATCC 6538, Staphylococcus epidermidis ATCC 12228, Trichophyton rubrum, Trichophyton mentagrophytes var. erinacei NCPF-375 and Microsporum canis (MIC 50-6.25 mg/ml). The in vitro antimycobacterial activity of the new compounds was also investigated. Some of the compounds showed varying degrees of inhibition (2-40%) against Mycobacterium tuberculosis H37Rv in the primary screen that was conducted at 12.5 mg/ml using the BACTEC 460 radiometric system.

Anti-Bacterial Agents↗