1.The relationship between anthropometric and metabolic risk factors and testicular function in healthy young men
Hakkı UZUN ; Merve HUNER ; Mehmet KIVRAK ; Ertan ZENGIN ; Yusuf Önder OZSAGIR ; Berat SÖNMEZ ; Görkem AKÇA
Clinical and Experimental Reproductive Medicine 2024;51(1):48-56
Objective:
This study investigated the relationship of anthropometric and metabolic risk factors with seminal and sex steroidal hormone parameters in a screened population of healthy males.
Methods:
The participants were healthy young men without chronic or congenital diseases. The body composition parameters that we investigated were measured weight, height, and waist circumference (WC), as well as bioelectrical impedance analysis. Semen samples were analyzed for semen volume, sperm concentration, sperm motility and morphology, seminal pH, and liquefaction time. Biochemistry analysis, including glucose and lipid metabolism parameters, was conducted on fasting blood samples. Testicular volume was calculated separately for each testis using ultrasonography.
Results:
Body mass index exhibited an inverse association with total sperm count. WC showed negative correlations with numerous seminal parameters, including sperm concentration, total sperm count, sperm morphology, and follicle-stimulating hormone levels. The basal metabolic rate was associated with seminal pH, liquefaction time, and sperm motility. WC, fat mass percentage, and triglyceride levels exhibited negative correlations with sex hormone binding globulin. The measures of glucose metabolism were associated with a greater number of seminal parameters than the measures of cholesterol metabolism. C-reactive protein levels were inversely associated with sperm concentration and total sperm count.
Conclusion
Anthropometric and metabolic risk factors were found to predict semen quality and alterations in sex steroidal hormone levels.
2. Achillea biebersteinii extracts suppress angiogenesis and enhance sensitivity to 5-fluorouracil of human colon cancer cells via the PTEN/AKT/mTOR pathway in vitro
Mehmet ERDOGAN ; Can AǦCA ; Hakan AŞKIN
Asian Pacific Journal of Tropical Biomedicine 2020;10(11):505-515
To investigate the antiproliferative, anti-angiogenic, and apoptotic effects of extracts of Achillea biebersteinii (ABE) and combined treatments of ABE with 5-fluorouracil (5-FU) on HT-29 cells. Methods: The effects of ABE, 5-FU, and combined treatments on the viability of HT-29 cells were determined by 3-(4,5- dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. Isobologram analysis was used to determine synergism between ABE and 5-FU. The apoptotic and anti-angiogenic effects were determined by cell death detection and human vascular endothelial growth factor ELISA method, respectively. Transcriptional and translational expressions of p53, Bax, Bcl-2, p38 MAPK, Akt, PTEN, and mTOR were also evaluated by real-time PCR and Western blotting analysis. Results: ABE decreased the viability of HT-29 cells in a dosedependent manner. Combined treatment of hexane, chloroform, and methanol extracts of Achillea biebersteinii with 5-FU at IC50 doses decreased the cell viability to 26.0%, 19.1%, and 14.9%, respectively (P0.001). Furthermore, ABE treatment alone and combination with 5-FU, induced apoptosis, significantly downregulated mTOR, Akt, Bcl-2 expression, upregulated p53, Bax, PTEN, p38 MAPK expression, and exhibited anti-angiogenetic effects. Conclusions: Our findings indicate that ABE shows synergism with 5-FU and inhibits the proliferation of HT-29 cells by inducing apoptosis and suppressing angiogenesis, which may provide biological evidence for further use of ABE in the treatment of colorectal cancer.
3.Can Wideband Tympanometry Be Used as a Screening Test for Superior Semicircular Canal Dehiscence?
Emine DEMIR ; Nazife Nur AFACAN ; Metin CELIKER ; Fatma Beyazal CELIKER ; Mehmet Fatih İNECIKLI ; Suat TERZI ; Engin DURSUN
Clinical and Experimental Otorhinolaryngology 2019;12(3):249-254
OBJECTIVES: We explored whether wideband tympanometry (WBT) could be used as a screening test for superior semicircular canal dehiscence (SSCD), and obtained new WBT data (given that the test is not yet in common clinical use) on patients with SSCD. METHODS: We compared the WBT data of patients clinically and radiologically diagnosed with SSCD in our hospital between 2013 and 2018 to those of healthy volunteers. We compared the resonance frequency (RF), maximum absorbance frequency (MAF), and maximum absorbance ratio (MAR). The t-test was used for statistical analysis with the significance level set to P<0.05. In addition, we used receiver operating characteristic analysis to derive cutoff values for SSCD diagnosis in terms of sensitivity and specificity. RESULTS: Seventeen patients (four with bilateral and 13 with unilateral disease; 17 ears) diagnosed with SSCD and 27 healthy volunteers (47 ears) were included. The mean RFs of the SSCD patients and healthy subjects were 548.7 Hz (range, 243 to 853 Hz) and 935.1 Hz (range, 239 to 1,875 Hz), respectively (P<0.001). The mean MARs of the SSCD patients and healthy subjects were 89.4% (range, 62% to 100%) and 82.4% (range, 63% to 99%), respectively (P=0.005). The mean MAFs of the SSCD patients and healthy subjects were 1,706.3 Hz (range, 613 to 3,816 Hz) and 2,668 Hz (range, 876 to 4,387 Hz), respectively (P<0.001). In terms of SSCD diagnosis, a MAR above 86% afforded 81% sensitivity and 77% specificity; an RF below 728 Hz, 86% sensitivity and 81% specificity; and an MAF below 1,835 Hz, 79% sensitivity and 67% specificity. CONCLUSION: WBT may be a useful clinical screening test for SSCD. The RF and MAF were lower, and the MAR higher, in SSCD patients than in normal controls.
Acoustic Impedance Tests
;
Diagnosis
;
Healthy Volunteers
;
Humans
;
Mars
;
Mass Screening
;
ROC Curve
;
Semicircular Canals
;
Sensitivity and Specificity
4.Esculetin Inhibits the Survival of Human Prostate Cancer Cells by Inducing Apoptosis and Arresting the Cell Cycle
Kader TURKEKUL ; R Dilsu COLPAN ; Talha BAYKUL ; Mehmet D OZDEMIR ; Suat ERDOGAN
Journal of Cancer Prevention 2018;23(1):10-17
BACKGROUND: Prostate cancer (PCa) is one of the most important causes of death in men and thus new therapeutic approaches are needed. In this study, antiproliferative and anti-migration properties of a coumarin derivative esculetin were evaluated. METHODS: Human PCa cell lines PC3, DU145, and LNCaP were treated with various concentrations of esculetin for 24 to 72 hours, and cell viability was determined by the MTT test. Cell cycle and apoptosis were analyzed by using cell-based cytometer. Gene expression levels were assessed by reverse transcription and quantitative real-time PCR, cell migration was determined by the wound healing assay. The protein expression was measured by Western blotting. RESULTS: Esculetin inhibited cell proliferation in a dose- and time-dependent manner. Cell migration was inhibited by esculetin treatment. Administration of esculetin significantly reduced the cells survival, induced apoptosis and caused the G1 phase cell cycle arrest shown by image-based cytometer. The induced expression of cytochrome c, p53, p21 and p27, and down-regulated CDK2 and CDK4 may be the underlying molecular mechanisms of esculetin effect. Esculetin suppressed phosphorylation of Akt and enhanced protein expression of tumor-suppressor phosphatase and tensin homologue. CONCLUSIONS: Our findings showed that the coumarin derivative esculetin could be used in the management of PCa. However, further in vivo research is needed.
Apoptosis
;
Blotting, Western
;
Cause of Death
;
Cell Cycle Checkpoints
;
Cell Cycle
;
Cell Line
;
Cell Movement
;
Cell Proliferation
;
Cell Survival
;
Cytochromes c
;
G1 Phase
;
Gene Expression
;
Humans
;
Male
;
Passive Cutaneous Anaphylaxis
;
Phosphorylation
;
Prostate
;
Prostatic Neoplasms
;
Real-Time Polymerase Chain Reaction
;
Reverse Transcription
;
Wound Healing
5.Central Sagittal Angle of the Sacrum as a New Risk Factor for Patients with Persistent Low Back Pain after Caesarean Section.
Hizir KAZDAL ; Ayhan KANAT ; Osman Ersagun BATCIK ; Bulent OZDEMIR ; Senol SENTURK ; Murat YILDIRIM ; Leyla KAZANCIOGLU ; Ahmet SEN ; Sule BATCIK ; Mehmet Sabri BALIK
Asian Spine Journal 2017;11(5):726-732
STUDY DESIGN: Retrospective. PURPOSE: This study investigated the possible association of persistent low back pain (LBP) with caesarean section (CS) under spinal anesthesia. OVERVIEW OF LITERATURE: Many women suffer from LBP after CS, which is commonly performed under spinal anesthesia. However, this type of LBP is poorly understood, and there is poor consensus regarding increased risk after spinal anesthesia. METHODS: We examined two groups of patients who underwent cesarean delivery under spinal anesthesia. Group I included patients who presented to a neurosurgical clinic complaining of LBP for at least 6 months. Group II was a control group with patients without LBP. We analyzed clinical and sagittal angle parameters, including age, body mass index, parity, central sagittal angle of the sacrum (CSAS), and sacral slope (SS). RESULTS: Fifty-three patients participated in this study: 23 (43.1%) in Group I and 30 (56.9%) in Group II. Non-parametric Mann–Whitney U-tests showed that age, parity, and CSAS significantly differed between the two groups at 6 months. CONCLUSIONS: Age, parity, and CSAS appear to be associated with increased risk for LBP after CS under spinal anesthesia. Future prospective studies on this subject may help validate our results.
Anesthesia, Spinal
;
Body Mass Index
;
Cesarean Section*
;
Consensus
;
Female
;
Humans
;
Low Back Pain*
;
Parity
;
Pregnancy
;
Prospective Studies
;
Retrospective Studies
;
Risk Factors*
;
Sacrum*
6.Synovial Sarcoma Mimicking Myositis Ossificans
Mehmet Sabri BALIK ; Adem ERKUT ; Yılmaz GUVERCIN ; Recep BEDIR
The Journal of Korean Knee Society 2016;28(3):249-252
A calcification mass was incidentally found in the soft tissue of a patient who had a history of trauma to the extremity during examination. The patient had no symptom. The pathological analysis of the mass revealed it was an early-phase synovial sarcoma (SS). The diagnosis was made before the onset of symptoms and proper surgical intervention was performed. Therefore, in case of a <1 cm lesion clinically suspicious of myositis ossificans, SS should be taken into consideration as a possible diagnosis.
Diagnosis
;
Extremities
;
Femur
;
Humans
;
Myositis Ossificans
;
Myositis
;
Sarcoma, Synovial
7.Letter to the Editor: Investigation of Efficacy of Mitomycin-C, Sodium Hyaluronate and Human Amniotic Fluid in Preventing Epidural Fibrosis and Adhesion Using a Rat Laminectomy Model.
Elif BOLAT ; Erdogan KOCAMAZ ; Zeki KULAHCILAR ; Ali YILMAZ ; Abdullah TOPCU ; Mevci OZDEMIR ; Mehmet Erdal COSKUN
Asian Spine Journal 2014;8(4):540-540
No abstract available.
Amniotic Fluid*
;
Animals
;
Female
;
Fibrosis*
;
Humans
;
Hyaluronic Acid*
;
Laminectomy*
;
Mitomycin*
;
Rats*
8.Letter to the Editor: Investigation of Efficacy of Mitomycin-C, Sodium Hyaluronate and Human Amniotic Fluid in Preventing Epidural Fibrosis and Adhesion Using a Rat Laminectomy Model.
Elif BOLAT ; Erdogan KOCAMAZ ; Zeki KULAHCILAR ; Ali YILMAZ ; Abdullah TOPCU ; Mevci OZDEMIR ; Mehmet Erdal COSKUN
Asian Spine Journal 2014;8(4):540-540
No abstract available.
Amniotic Fluid*
;
Animals
;
Female
;
Fibrosis*
;
Humans
;
Hyaluronic Acid*
;
Laminectomy*
;
Mitomycin*
;
Rats*
9.A randomized-controlled, double-blind comparison of the postoperative analgesic efficacy of caudal bupivacaine and levobupivacaine in minor pediatric surgery.
Ahmet SEN ; Mehmet Salih COLAK ; Engin ERTURK ; Yakup TOMAK
Korean Journal of Anesthesiology 2014;66(6):457-461
BACKGROUND: We compared the postoperative analgesic efficacy of caudal levobupivacaine with bupivacaine in pediatric subumbilical surgery. METHODS: Sixty American Society of Anesthesiologists I-II patients scheduled for elective minor surgery (1.5-7 years old) were randomly divided into three groups to receive caudal injections of study drugs at 0.5 ml/kg. All patients received 0.1 mg/kg oral midazolam 30 min before surgery. Group B received 0.125% bupivacaine, group L received 0.125% levobupivacaine, and group LF received 0.125% levobupivacaine + 0.5 microg/kg fentanyl. Blood pressure, heart rate and sedation (using a four-scale sedation score) were monitored perioperatively. During the postoperative period, an anesthesiologist blinded to the study groups used the Children's and Infants' Postoperative Pain Scale to monitor patients' pain and degree of sedation. The time before the first rescue analgesic was recorded as well as any side effects over the next 24 h. RESULTS: The four-scale sedation and postoperative pain scale scores in all groups were identical. Blood pressure and heart rate measured at 15 min postoperatively were lower, and time to first rescue analgesic was longer, in Group LF compared to the others. CONCLUSIONS: Caudal 0.5 ml/kg of 0.125% bupivacaine and levobupivacaine are equally effective for postoperative analgesia after subumbilical surgeries in pediatric patients. Addition of fentanyl may lower the required amount of local anesthetics.
Analgesia
;
Analgesia, Epidural
;
Anesthetics, Local
;
Blood Pressure
;
Bupivacaine*
;
Fentanyl
;
Heart Rate
;
Humans
;
Midazolam
;
Pain, Postoperative
;
Pediatrics
;
Postoperative Period
;
Surgical Procedures, Minor
10.Quadriceps Tendon Rupture due to Postepileptic Convulsion
Mehmet Sabri BALIK ; Adem ERKUT ; Yilmaz GUVERCIN ; Rifat SAHIN ; Davut KESKIN
The Journal of Korean Knee Society 2014;26(2):114-116
We present a case of quadriceps tendon (QT) rupture. QT ruptures can occur in all ages. The cause is mostly traumatic in origin. Spontaneous ruptures that are thought to result from predisposing conditions are rare. Post-convulsion QT ruptures lacking traumas in their history can be overlooked in clinical examinations. This should be born in mind by the attending physician, as early diagnosis and treatment of the condition can lead to satisfactory outcomes.
Early Diagnosis
;
Epilepsy
;
Knee Joint
;
Rupture
;
Rupture, Spontaneous
;
Seizures
;
Tendon Injuries
;
Tendons

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