1.Primula vulgaris extract induces cell cycle arrest and apoptosis in human cervix cancer cells
Demir SELIM ; Turan IBRAHIM ; Aliyazicioglu REZZAN ; Yaman Ozer SERAP ; Aliyazicioglu YUKSEL
Journal of Pharmaceutical Analysis 2018;8(5):307-311
Primula vulgaris belongs to the genus Primula, members of which are frequently used in folk medicine. Various studies have investigated the cytotoxic effect of different Primula species, but there have been limited studies on the cytotoxic effect of P. vulgaris. The aim of this study was to investigate the cytotoxic effects, and possible mechanisms involved, of P. vulgaris flower extract on human cervical cancer (HeLa) cells. The cytotoxic effect of the extract on HeLa cells was revealed using the MTT assay. Mechanisms involved in the extract's cytotoxic effect were then investigated in terms of apoptosis, mitochondrial membrane potential, and the cell cycle, using fluorometric methods. P. vulgaris flower extract exhibited selective cytotoxic effects against HeLa cells by arresting their cell cycle at the S phase, and inducing the number of apoptotic cells compared to normal fibroblast cells by reducing mitochondrial membrane potential in a concentration-dependent manner. This is the first study to reveal the antiproliferative effect of P. vulgaris flower extract. Further studies are now needed to identify the cytotoxic molecules in the extract and their mechanisms.
2.Comparison of Transcatheter Atrial Septal Defect Closure in Children, Adolescents and adults: Differences, Challenges and Short-, Mid- and Long-Term Results.
Turkay SARITAS ; Ilker Kemal YUCEL ; Ibrahim Halil DEMIR ; Fadli DEMIR ; Abdullah ERDEM ; Ahmet CELEBI
Korean Circulation Journal 2016;46(6):851-861
BACKGROUND AND OBJECTIVES: This study aims to compare the characteristics, effectiveness and results of transcatheter closure of atrial septal defect between children, adolescents, and adults. SUBJECTS AND METHODS: In this study, 683 patients who underwent atrial septal defect closure in the last 10 years were divided into three groups: children (age <12), adolescents (age 12 to 16), and adults (age >16) as group 1, group 2 and group 3, respectively. RESULTS: The average defect size and incidence of complex atrial septal defect were higher in group 3 (p=0.0001 and 0.03 respectively). While the average size of the devic was higher in adults (22.6±6.4 mm vs. 18.5±4.9 mm; p=0.0001), the ratio of the device size/total septum was higher in both children and adolescents (Group 1 and 2). In the child and adolescent groups and patients with only complex atrial septal defect, the use of techniques, other than standard deployment, was similar in all three groups (p=0.86 and 0.41, respectively). The ratio of the residual shunt was similar in all three groups. Major complications were seen in 5 cases (4 cases with migration, and 1 case with dislocation) in group 3 and 1 case (migration) in group 1. CONCLUSION: Depending on the complexity of the defect and age of the patient, transcatheter closure of atrial septal defect might have certain difficulties and complications. Patients must be evaluated in detail to avoid major complications and possible problems during the procedure.
Adolescent*
;
Adult*
;
Child*
;
Heart Septal Defects, Atrial*
;
Humans
;
Incidence
;
Septal Occluder Device
3.Decreased Prolidase Activity in Patients with Posttraumatic Stress Disorder.
Süleyman DEMIR ; Mahmut BULUT ; Abdullah ATLI ; Ibrahim KAPLAN ; Mehmet Cemal KAYA ; Yasin BEZ ; Pınar Güzel ÖZDEMIR ; Aytekin SIR
Psychiatry Investigation 2016;13(4):420-426
OBJECTIVE: Many neurochemical systems have been implicated in the development of Posttraumatic Stress Disorder (PTSD). The prolidase enzyme is a cytosolic exopeptidase that detaches proline or hydroxyproline from the carboxyl terminal position of dipeptides. Prolidase has important biological effects, and to date, its role in the etiology of PTSD has not been studied. In the present study, we aimed to evaluate prolidase activity in patients with PTSD. METHODS: The study group consisted of patients who were diagnosed with PTSD after the earthquake that occurred in the province of Van in Turkey in 2011 (n=25); the first control group consisted of patients who experienced the earthquake but did not show PTSD symptoms (n=26) and the second control group consisted of patients who have never been exposed to a traumatic event (n=25). Prolidase activities in the patients and the control groups were determined by the ELISA method using commercial kits. RESULTS: Prolidase activity in the patient group was significantly lower when compared to the control groups. Prolidase activity was also significantly lower in the traumatized healthy subjects compared to the other healthy group (p<0.01). CONCLUSION: The findings of the present study suggest that the decrease in prolidase activity may have neuroprotective effects in patients with PTSD.
Cytosol
;
Dipeptides
;
Earthquakes
;
Enzyme-Linked Immunosorbent Assay
;
Exopeptidases
;
Healthy Volunteers
;
Humans
;
Hydroxyproline
;
Methods
;
Neuroprotective Agents
;
Proline
;
Stress Disorders, Post-Traumatic*
;
Turkey
4.Cytotoxic effect of Rosa canina extract on human colon cancer cells through repression of telomerase expression
Turan IBRAHIM ; Demir SELIM ; Kilinc KAGAN ; Yaman Ozer SERAP ; Misir SEMA ; Kara HANIFE ; Genc BERNA ; Mentese AHMET ; Aliyazicioglu YUKSEL ; Deger ORHAN
Journal of Pharmaceutical Analysis 2018;8(6):394-399
Rosa canina is a member of the genus Rosa that has long been used for medical objectives. Several studies have reported cytotoxic effects of different Rosa species, but there has been only limited investigation of the cytotoxic effect of R. canina. The purpose of the current study was to examine the potential effect of R. canina extract on cell viability, the cell cycle, apoptosis, and the expression of telomerase in human colon cancer (WiDr) cells. The cytotoxic effect of the extract was determined using MTT assay. The mechanism involved in the cytotoxic effect of the extract was then evaluated in terms of apoptosis and the cell cycle using flow cytometry. Mitochondrial membrane potential (MMP) was investigated using the fluorometric method, and expression levels of telomerase were studied using RT-PCR. R. canina extract exhibited a selective cytotoxic effect on WiDr cells compared with normal colon cells. The extract induced cell cycle arrest at the S phase and apoptosis via reduced MMP in WiDr cells. R. canina extract significantly repressed telomerase expressions at treatment times of 48 and 72 h in WiDr cells. Our results suggest that R. canina may have considerable potential for development as a novel natural product-based anticancer agent.
5.Fistulized Pseudoaneurysm Associated with Hypothenar Hammer Syndrome to the Skin in a 12-Year-Old Patient: A Case Report
Metin Onur BEYAZ ; Sefer KAYA ; İbrahim DEMIR
Vascular Specialist International 2023;39(4):37-
In this case, we present a condition where the extension of the hamate hook in the Guyon canal can damage the ulnar artery or its branches, leading to the development of an aneurysm or pseudoaneurysm. The patient, a 12-year-old female, presented to our clinic with a complaint of an uncontrolled palm lump that has been growing for several months and began to bleed in a pulsatile manner after trauma.She was an amateur volleyball player who trained twice weekly for two hours.Color Doppler ultrasound examination revealed a 1.1×0.8 cm pseudoaneurysm in a branch of the ulnar artery. Aneurysmectomy and primary repair were performed.Timely diagnosis and treatment planning are crucial for ulnar artery pseudoaneurysms or aneurysms to prevent ischemic events in a later period.
6.The Healing Effects of Autologous Mucosal Grafts in Experimentally Injured Rabbit Maxillary Sinuses.
Murat TOPDAG ; Ahmet KARA ; Esma KONUK ; Necdet DEMIR ; Murat OZTURK ; Sebla CALISKAN ; Deniz Ozlem TOPDAG ; Arif ULUBIL ; Ibrahim Gurkan KESKIN ; Mete ISERI
Clinical and Experimental Otorhinolaryngology 2016;9(1):44-50
OBJECTIVES: Healing processes of the nose and paranasal sinuses are quite complex, and poorly understood. In this study, we aimed to compare the effect of mucosal autologous grafts on the degenerated rabbit maxillary sinus mucosa with spontaneous wound healing. It is hypothesized that mucosal grafts will enhance ciliogenesis and improve the morphology of regenerated cilia. METHODS: Ten female New Zealand rabbits were included in the study. They underwent external maxillary sinus surgery through a transcutaneous approach. A total of 20 maxillary sinuses were randomly divided into 2 groups: 'spontaneous healing group' and 'autologous graft group.' The animals were sacrificed at the 14th day after the surgery. Scanning electron microscope (SEM), and light microscope were used for the evaluation. RESULTS: Cellular composition of the graft group is better than the spontaneous healing group. The graft group had larger areas covered with ciliary epithelium than the spontaneous healing group, and the mean length of the cilias were also longer. Additionally, there were wider cilia with abnormal morphology areas in the spontaneous healing group. CONCLUSION: In our opinion, covering of the denuded areas with a graft improves re-epithelization, and may prevent the early complications after sinus surgeries.
Animals
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Cilia
;
Epithelium
;
Female
;
Humans
;
Maxillary Sinus*
;
Mucous Membrane
;
Nasal Mucosa
;
Nose
;
Paranasal Sinuses
;
Rabbits
;
Transplants*
;
Wound Healing
7.Evaluation of Paraoxonase, Arylesterase and Malondialdehyde Levels in Schizophrenia Patients Taking Typical, Atypical and Combined Antipsychotic Treatment.
Mehmet GÜNEŞ ; Mehmet Akif CAMKURT ; Mahmut BULUT ; Süleyman DEMIR ; Aslıhan Okan IBILOĞLU ; Mehmet Cemal KAYA ; Abdullah ATLI ; Ibrahim KAPLAN ; Aytekin SIR
Clinical Psychopharmacology and Neuroscience 2016;14(4):345-350
OBJECTIVE: Human serum paraoxonase (PON1) prevents lipids from peroxidation and functions as an antioxidant mechanism. Malonyldialdehyde (MDA) is the final product of lipid peroxidation and can be used as an indicator of oxidative stress. The aim of this study was to investigate PON1, MDA, and arylesterase (ARY) levels in schizophrenic patients who are taking typical, atypical, or combined (typical and atypical) antipsychotic drug treatment, with respect to those of healthy controls. METHODS: We evaluated 41 patients (11 taking typical antipsychotics, 19 taking atypical antipsychotics, 11 taking combined anti-psychotics) and 43 healthy controls. RESULTS: MDA levels were higher in schizophrenic patients taking typical antipsychotics compared with healthy controls (p=0.001). ARY levels were higher in patients taking atypical antipsychotics compared with healthy controls (p=0.005). PON1 activity was similar in all groups. CONCLUSION: Our results indicate that treatment with typical antipsychotic drugs could be related to increased MDA levels; and antipsychotic medication may increase PON1 levels in schizophrenic patients.
Antipsychotic Agents
;
Aryldialkylphosphatase*
;
Humans
;
Lipid Peroxidation
;
Malondialdehyde*
;
Oxidative Stress
;
Schizophrenia*
8.Comparison of pain and proper sample status according to usage of tenaculum and analgesia: a randomized clinical trial
Cihan COMBA ; Gökhan DEMIRAYAK ; Sakir Volkan ERDOGAN ; Ibrahim KARACA ; Omer DEMIR ; Oguz GULER ; Isa Aykut OZDEMIR
Obstetrics & Gynecology Science 2020;63(4):506-513
Objective:
Colposcopic biopsy is a discomfortable procedure. Additionally, it creates negative influence on sexuality. This study aimed to investigate the relationships among tenaculum, pain perception, and biopsy size during colposcopy.
Methods:
In total, 228 patients who underwent colposcopy-directed biopsy were included, and randomized into 4 groups based on whether analgesic and tenaculum were used and replaced (tenaculum with n=58/without analgesic n=56, no tenaculum replacement with n=57/without analgesic n=57). Lidocaine hydrochloride (40 mg) plus adrenaline (0.025 mg) was administered in the analgesic groups. The pain was assessed using a linear visual analog scale. The biopsy specimen size was measured in millimeters.
Results:
The mean age of the patients was 42.85±8.88 years. The most frequent colposcopy indications were atypical squamous cells of undetermined significance and human papilloma virus-positive results on cervical cytology (30.2%; n=69). Low- and high-grade intraepithelial lesions were noted in 14.91% (n=34) and 10.96% (n=25) women through colposcopy-directed biopsy results, respectively. Tenaculum replacement increased pain perception in the without analgesic group; however, no statistically significant differences were noted between of the groups with and without tenaculum replacement with analgesic. The size and number of biopsy specimens were not associated with tenaculum replacement and analgesic use.
Conclusion
Administration of analgesics decreased discomfort and pain in patients. Tenaculum replacement aided colposcopists in manipulating the cervix. Additionally, administration of analgesics relieved pain in the tenaculum replacement group.Trial RegistrationClinicalTrials.gov Identifier: NCT03279666
9.Comparison of pain and proper sample status according to usage of tenaculum and analgesia: a randomized clinical trial
Cihan COMBA ; Gökhan DEMIRAYAK ; Sakir Volkan ERDOGAN ; Ibrahim KARACA ; Omer DEMIR ; Oguz GULER ; Isa Aykut OZDEMIR
Obstetrics & Gynecology Science 2020;63(4):506-513
Objective:
Colposcopic biopsy is a discomfortable procedure. Additionally, it creates negative influence on sexuality. This study aimed to investigate the relationships among tenaculum, pain perception, and biopsy size during colposcopy.
Methods:
In total, 228 patients who underwent colposcopy-directed biopsy were included, and randomized into 4 groups based on whether analgesic and tenaculum were used and replaced (tenaculum with n=58/without analgesic n=56, no tenaculum replacement with n=57/without analgesic n=57). Lidocaine hydrochloride (40 mg) plus adrenaline (0.025 mg) was administered in the analgesic groups. The pain was assessed using a linear visual analog scale. The biopsy specimen size was measured in millimeters.
Results:
The mean age of the patients was 42.85±8.88 years. The most frequent colposcopy indications were atypical squamous cells of undetermined significance and human papilloma virus-positive results on cervical cytology (30.2%; n=69). Low- and high-grade intraepithelial lesions were noted in 14.91% (n=34) and 10.96% (n=25) women through colposcopy-directed biopsy results, respectively. Tenaculum replacement increased pain perception in the without analgesic group; however, no statistically significant differences were noted between of the groups with and without tenaculum replacement with analgesic. The size and number of biopsy specimens were not associated with tenaculum replacement and analgesic use.
Conclusion
Administration of analgesics decreased discomfort and pain in patients. Tenaculum replacement aided colposcopists in manipulating the cervix. Additionally, administration of analgesics relieved pain in the tenaculum replacement group.Trial RegistrationClinicalTrials.gov Identifier: NCT03279666