1
|
Dogan S, Yildiz S, Kazgan Kılıçaslan A, Sirlier Emir B, Kurt O, Sehlikoğlu S. Does anxiety, depression, and sleep levels affect the quality of life in patients diagnosed with multiple sclerosis? Eur Rev Med Pharmacol Sci 2024; 28:1306-1313. [PMID: 38436164 DOI: 10.26355/eurrev_202402_35452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/05/2024]
Abstract
OBJECTIVE Multiple sclerosis (MS) is a chronic disease characterized by relapses and remissions, causing physical disability and affecting individuals psychosocially. In this study, we aimed to assess anxiety and depression levels, sleep, and quality of life in MS patients. PATIENTS AND METHODS The study included 66 participants, 30 healthy controls, and 36 patients diagnosed with MS. All participants were administered the Sociodemographic and Clinical Data Form, Multiple Sclerosis Quality of Life Instrument (MSQOL-54), Pittsburgh Sleep Quality Index (PSQI), Expanded Disability Status Scale (EDSS), Beck Depression Inventory (BDI), and Beck Anxiety Inventory (BAI). RESULTS The PSQI, EDSS, BDI, and BAI scores of MS patients were found to be significantly higher, while the MSQOL-54 score was considerably lower than the healthy control group (p<0.001). In the patient group, there was a positive correlation between PSQI score and BDI (r=0.599, p<0.001) and BAI (r=0.633, p<0.001), while there was a negative correlation between PSQI and MSQOL-54 (r=0.705, p<0.001) and the duration of MS diagnosis (r=-0.364, p=0.029). A positive correlation was found between the EDSS score and BDI (r=0.401, p=0.015) and the number of hospitalizations (r=0.566, p<0.001). There was a significant negative correlation observed between MSQOL-54 and BDI (r=-0.807, p<0.001) as well as BAI (r=-0.834, p<0.001). There is a significant positive relationship between BDI and BAI (r=0.828, p<0.001). CONCLUSIONS Our research revealed that individuals diagnosed with multiple sclerosis exhibit elevated levels of anxiety and depression symptoms when compared to a healthy control group. Additionally, they tend to experience lower sleep quality and overall quality of life. The provision of necessary psychiatric interventions to these patients following their diagnosis can enable them to accept the disease and actively participate in treatment, thereby positively impacting their quality of life.
Collapse
Affiliation(s)
- S Dogan
- Department of Neurology, Elazig Fethi Sekin City Hospital, Elazig, Turkey.
| | | | | | | | | | | |
Collapse
|
2
|
Yildirim YSS, Yildiz S. Investigation of social appearance anxiety and self-esteem in individuals planned for aesthetic rhinoplasty. Eur Rev Med Pharmacol Sci 2024; 28:1089-1094. [PMID: 38375714 DOI: 10.26355/eurrev_202402_35345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
OBJECTIVE Recently, aesthetic rhinoplasty surgeries performed to change the external appearance have become increasingly common, especially among young people. This study examined the frequency of social appearance anxiety, self-esteem, and social media use in people with rhinoplasty surgeries for aesthetic concerns. SUBJECTS AND METHODS A total of 76 people, including 27 healthy controls and 49 aesthetic rhinoplasty planned cases, were included in the study. All participants were administered the sociodemographic data form, Social Appearance Anxiety Scale (SAAS), Rosenberg Self-Esteem Scale (RSE), and Bergen Social Media Addiction Scale (BMSAS). RESULTS The RSE score of the case group was significantly lower than the control group (p<0.001), and the SAAS (p=0.004) and BSMAS (p=0.005) scores were significantly higher. A significant negative correlation was observed between the RSE scale score, SAAS, and BMSAS. There was a significant positive relationship between SAAS and BSMAS. Cut-off values were determined using the ROC analysis. When the value of 1.41 was taken as the cut-off for RSE, 81.6% sensitivity and 74.1% specificity were found and were good predictors. When the value of 21 was taken as the cut-off for SAAS, 83.7% sensitivity and 51.9% specificity were found, and it was found to be a good predictor. When the value of 19 was taken as the cut-off for BSMAS, 42.9% sensitivity, and 88.9% specificity were found, and it was found to be a good predictor. CONCLUSIONS People who undergo aesthetic rhinoplasty have high social appearance anxiety and self-esteem and frequent use of social media. More extensive sample studies are needed to examine the effects of this situation on rhinoplasty.
Collapse
Affiliation(s)
- Y S S Yildirim
- Department of Otorhinolaryngology, Elazig Fethi Sekin City Hospital, Elazig, Turkey.
| | | |
Collapse
|
3
|
Turkgeldi E, Yildiz S, Kalafat E, Keles I, Ata B, Bozdag G. Can endometrial compaction predict live birth rates in assisted reproductive technology cycles? A systematic review and meta-analysis. J Assist Reprod Genet 2023; 40:2513-2522. [PMID: 37726586 PMCID: PMC10643758 DOI: 10.1007/s10815-023-02942-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 09/11/2023] [Indexed: 09/21/2023] Open
Abstract
PURPOSE Endometrial compaction (EC) is defined as the difference in endometrial thickness from the end of the follicular phase to the day of embryo transfer (ET). We aimed to determine the role of EC in predicting assisted reproductive technology (ART) success by conducting a meta-analysis of studies reporting the association between EC and clinical outcomes of ART. METHODS MEDLINE via PubMed, Web of Science, Scopus, and the Cochrane Central Register of Controlled Trials (CENTRAL) were searched from the date of inception to May 19, 2023. The primary outcome was live birth rate (LBR) per ET. Secondary outcomes were live birth or ongoing pregnancy per ET, ongoing pregnancy per ET, clinical pregnancy per ET, and miscarriage per clinical pregnancy. RESULTS Fifteen studies were included. When data from all studies reporting live birth were pooled, overall LBR rates were comparable in cycles showing EC or not [RR = 0.97, 95%CI = 0.92 to 1.02; 10 studies, 11,710 transfer cycles]. In a subgroup of studies that included euploid ET cycles, a similar LBR for patients with and without EC was noted [RR = 0.99, 95%CI = 0.86 to 1.13, 4 studies, 1172 cycles]. The miscarriage rate did not seem to be affected by the presence or absence of EC [RR = 1.06, 95%CI = 0.90 to 1.24; 12 studies]. CONCLUSION The predictive value of EC in determining LBR is limited, and assessment of EC may no longer be necessary, given these findings. TRIAL REGISTRATION PROSPERO CRD42023410389.
Collapse
Affiliation(s)
- E Turkgeldi
- Department of Obstetrics and Gynaecology, Koc University, Istanbul, Turkey.
| | - S Yildiz
- Department of Obstetrics and Gynaecology, Koc University, Istanbul, Turkey
| | - E Kalafat
- Department of Obstetrics and Gynaecology, Koc University, Istanbul, Turkey
| | - I Keles
- Koc University Hospital, Assisted Reproduction Unit, Istanbul, Turkey
| | - B Ata
- Department of Obstetrics and Gynaecology, Koc University, Istanbul, Turkey
- ART Fertility Center, Dubai, UAE
| | - G Bozdag
- Department of Obstetrics and Gynaecology, Koc University, Istanbul, Turkey
| |
Collapse
|
4
|
Sirlier Emir B, Yildiz S, Kazğan Kiliçaslan A, Kiliç F, Uğur K, Aydin S, Atmaca M. The roles of Klotho and FGF-23 in bipolar manic episode. Eur Rev Med Pharmacol Sci 2023; 27:101-108. [PMID: 37869955 DOI: 10.26355/eurrev_202310_34078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 10/24/2023]
Abstract
OBJECTIVE Bipolar disorder (manic episode) is an essential psychiatric disorder with unknown etiology, in which inflammation is considered to play a role. Klotho and FGF-23 are known to be associated with inflammation. Therefore, this study aimed to determine the link between Klotho and FGF-23 levels and bipolar disorder. PATIENTS AND METHODS In this study, 42 men with BD and 41 healthy controls were enrolled, followed up, and/or treated at the High-Security Forensic Psychiatry Clinic. Sociodemographic data form, Young Mania Rating Scale, and Hamilton Depression Rating Scale were applied to all participants. RESULTS Klotho and FGF-23 levels were significantly increased in patients with BD manic episodes. There was no correlation between Klotho and FGF-23 levels and clinical parameters. For Klotho and FGF-23, cutoff values of 69 and 1,646 yielded 67.4% sensitivity and 72.1% specificity and 81.4% sensitivity and 51.2% specificity, respectively. CONCLUSIONS Klotho and FGF-23 may play critical roles in the etiopathology of manic episodes and are potential candidate biomarkers for bipolar disorder. This relationship might contribute to the etiopathogenesis of the disease and determine its treatment. Anti-Klotho and anti-FGF-23 administration may be a future treatment for controlling the course of the disease.
Collapse
Affiliation(s)
- B Sirlier Emir
- Department of Psychiatry, Elazığ Fethi Sekin City Hospital, Elazığ, Turkey.
| | | | | | | | | | | | | |
Collapse
|
5
|
Bozbuga R, Yildiz S, Yuksel E, Özer G, Dababat AA, İmren M. Nematode-citrus plant interactions: host preference, damage rate and molecular characterization of Citrus root nematode Tylenchulus semipenetrans. Plant Biol (Stuttg) 2023; 25:871-879. [PMID: 37585261 DOI: 10.1111/plb.13566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 07/19/2023] [Indexed: 08/17/2023]
Abstract
Citrus plants are host to several plant parasitic nematodes (PPNs), which are microscopic organisms. Among PPNs, the citrus root nematode, T. semipenetrans (Cobb 1913) (Tylenchida: Tylenchulidae), causes significant damage to citrus plantations worldwide. Understanding citrus nematode populations, precise identification, host preference among citrus species, and damage threshold are crucial to control T. semipenetrans. The minutiae of citrus plant-nematode interactions, nematode density and molecular nematode identification are not well understood. In this study, nematode species and density in citrus orchards, host specialization, molecular and morphological characteristics of nematodes were assessed. Molecular and morphological methods, host-nematode interactions, host (citrus species) preference, damage economic threshold (ET), and economic injury level (EIL) were determined using laboratory methods and field sampling. Citrus plantations in different provinces in the Mediterranean region of Turkey were investigated. Nematode species were identified molecularly and morphologically. ITS sequences revealed that samples were infected by citrus root nematode T. semipenetrans. The lowest nematode density was in C. reticulata in Mersin (53 2nd stage juveniles (J2s) 100 g-1 soil), while the highest density was from Hatay in C. sinensis (12173 J2s 100 g-1 soil). Highest citrus nematode population density was on roots of C. reticulata, followed by C. sinensis, C. limon, and C. paradisi. The citrus nematode is more common than was thought and population fluctuations change according to specific citrus species. Environmental conditions, host and ecological factors, such as temperature, soil pH, and soil nutrients, might influence nematode populations in citrus orchards. Investigating nematode density in diverse soil ecologies and the responses of different resistant/tolerant citrus species and cultivars to nematode populations is essential in future studies.
Collapse
Affiliation(s)
- R Bozbuga
- Department of Plant Protection, Faculty of Agriculture, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - S Yildiz
- Department of Plant Protection, Faculty of Agriculture, Kyrgyz-Turkish Manas University, Bishkek, Kyrgystan
| | - E Yuksel
- Department of Plant Protection, Faculty of Agriculture, Erciyes University, Kayseri, Turkey
| | - G Özer
- Department of Plant Protection, Faculty of Agriculture, Bolu Abant Izzet Baysal University, Bolu, Turkey
| | - A A Dababat
- International Maize and Wheat Improvement Centre (CIMMYT), Ankara, Turkey
| | - M İmren
- Department of Plant Protection, Faculty of Agriculture, Bolu Abant Izzet Baysal University, Bolu, Turkey
| |
Collapse
|
6
|
Yildiz S, Sonmez GM, Komuroglu AU, Alay M. The association between exocrine pancreatic dysfunction and insulin resistance in an insulin-resistant population in Turkey: A cross-sectional study. Niger J Clin Pract 2023; 26:1051-1056. [PMID: 37635595 DOI: 10.4103/njcp.njcp_1451_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2023]
Abstract
Background In insulin resistance (IR), it is thought that pancreatic fat accumulation may decrease pancreatic volume, cause an impaired endocrine function, and simultaneously lead to an exocrine dysfunction before diabetes develops. Aim The association between pancreatic exocrine function and insulin resistance (IR) was assessed in a population with insulin resistance. Method This was a descriptive cross-sectional study that included 43 IR cases with no other comorbid diseases or pregnancy and 41 healthy controls. Fasting blood adiponectin, leptin, pancreatic amylase, lipase, and stool fecal elastase-1 (FE-1) were studied and compared in both groups. Results The IR group consisted of 38 females (88.3%) and five males (11.6%), while the control group consisted of 31 females (75.6%) and ten males (24.3%). FE-1 levels were significantly lower in the IR group (P-value <0.01). Blood glucose, insulin, and HbA1c levels were significantly higher in the IR group than in the control (P-value of <0.01, <0.01, <0.01, respectively). Leptin levels were significantly higher in the IR group compared to the controls (P-value = 0.013). After dividing the whole group (n: 84) into two groups as FE-1 <200 μg/g (n: 61) and FE-1 ≥200 μg/g (n: 23), logistic regression analysis was performed; the significant predictor of low FE-1 was HOMA-IR (ODD ratio: 4.27, P-value <0.01, 95% confidence interval for ODD ratio: 1.95-9.30). Conclusion This study showed that IR is associated with pancreatic exocrine dysfunction.
Collapse
Affiliation(s)
- S Yildiz
- Department of Endocrinology, Medicine Faculty, Van Yuzuncu Yil University, Turkey
| | - G M Sonmez
- Department of Endocrinology, Medicine Faculty, Van Yuzuncu Yil University, Turkey
| | - A U Komuroglu
- Department of Endocrinology, Medicine Faculty, Van Yuzuncu Yil University, Turkey
| | - M Alay
- Department of Endocrinology, Medicine Faculty, Van Yuzuncu Yil University, Turkey
| |
Collapse
|
7
|
Kumtepe Y, Ozkara G, Yelke H, Selimoglu S, Soysal E, Yildiz S, Unsal E, Kahraman S. P-093 A comparison of the effects of IMSI and HOST for sperm selection on morphokinetic parameters and ploidy status in sibling embryos. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Study question
Are hypo-osmotic swelling test (HOST) and intracytoplasmic morphologically selected sperm injection (IMSI) both effective alternative methods for sperm selection?
Summary answer
Similar results were obtained in embryo morphokinetics between HOST and IMSI.
What is known already
HOST is a simple, low-cost and rapid test based on the swelling of the tail of the sperm in a hypoosmotic environment. Less DNA fragmentation, membrane integrity and aneuploidy rates have been found in sperm selected by the HOST method. It also allows identification of viable sperm in a totally immotile sperm sample. IMSI, on the other hand, is a method for identifying the morphologically best sperm using high-magnification microscope. In studies, IMSI has been associated with high fertilization rates. However, it is a time-consuming method that requires expensive equipment.
Study design, size, duration
Time-Lapse Monitoring (TLM)-incubated sibling embryos of 25 male factor patients who applied for ART treatment to Istanbul, Sisli Memorial ART and Genetics Center in 2021 were included into the study. Sibling embryos were grouped according to their sperm selection method. In the IMSI group 170 embryos, in the HOST group 173 embryos were evaluated retrospectively in terms of the morphokinetic parameters, the rates of blastulation, Top- Quality (TQ) and Good Quality (GQ) embryos and euploidy.
Participants/materials, setting, methods
Blastocyst grading was performed according to Gardner’s classification. Blastocysts 3AA,4AA,4AB,4BA,4BB,5AA,5AB,5BA,5BB were accepted as TQ+GQ. Blastulation rates was determined including the embryos at least 2 expansion. PGT-A results were obtained by Next Generation Sequencing(NGS) method. The comparison of the TLM parameters and clinical features of the patients were performed using Student’s t-test. Chi-square test was used for comparing the rates of fertilization, blastulation, TQ+GQ embryo and euploidy in each group.
Main results and the role of chance
No statistical difference was observed between IMSI and HOST groups in terms of morphokinetic parameters (tPN, tPNf, t2, t3, t4, t5, t6, t7, t8, t9, tSC, tM, tSB, tB, tEB) (p > 0.05). There were higher rates of normal fertilization in the HOST group (90.8%) than in the IMSI group (82.4%) and of TQ+GQ embryo (HOST: 50%, IMSI: 47.3%). However, these diffrences were not statistically significant (p > 0.05). There was statistically lower abnormal fertilization rate was found in HOST group (2.3% vs 7.1%, p = 0.038). When PGT-A results were compared (HOST:19 embryos, IMSI: 19), slightly higher results were observed in IMSI group than HOST group ( 63%, 58% respectively) (p > 0.05).
Limitations, reasons for caution
This was a retrospective of a small number of cases.
Wider implications of the findings
The similarity of the outcome in these initial findings studying a small number of cases, suggest that this study should be extended.
Trial registration number
None
Collapse
Affiliation(s)
- Y Kumtepe
- Memorial Sisli Hospital, Assisted Reproductive Technologies and Reproductive Genetics Center , Istanbul, Turkey
| | - G Ozkara
- Memorial Sisli Hospital, Assisted Reproductive Technologies and Reproductive Genetics Center , Istanbul, Turkey
| | - H.K Yelke
- Memorial Sisli Hospital, Assisted Reproductive Technologies and Reproductive Genetics Center , Istanbul, Turkey
| | - S Selimoglu
- Memorial Sisli Hospital, Assisted Reproductive Technologies and Reproductive Genetics Center , Istanbul, Turkey
| | - E Soysal
- Memorial Sisli Hospital, Assisted Reproductive Technologies and Reproductive Genetics Center , Istanbul, Turkey
| | - S Yildiz
- Memorial Sisli Hospital, Assisted Reproductive Technologies and Reproductive Genetics Center , Istanbul, Turkey
| | - E Unsal
- Memorial Sisli Hospital, Assisted Reproductive Technologies and Reproductive Genetics Center , Istanbul, Turkey
| | - S Kahraman
- Memorial Sisli Hospital, Assisted Reproductive Technologies and Reproductive Genetics Center , Istanbul, Turkey
| |
Collapse
|
8
|
Birol Ilter P, Prasad S, Berkkan M, Mutlu MA, Tekin AB, Celik E, Ata B, Turgal M, Yildiz S, Turkgeldi E, O'Brien P, von Dadelszen P, Magee LA, Kalafat E, Tug N, Khalil A. Clinical severity of SARS-CoV-2 infection among vaccinated and unvaccinated pregnancies during the Omicron wave. Ultrasound Obstet Gynecol 2022; 59:560-562. [PMID: 35229932 PMCID: PMC9111183 DOI: 10.1002/uog.24893] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 02/22/2022] [Accepted: 02/22/2022] [Indexed: 05/05/2023]
Affiliation(s)
- P. Birol Ilter
- Department of Obstetrics and Gynecology, Sancaktepe Sehit Prof Dr Ilhan Varank Training and Research HospitalUniversity of Health SciencesIstanbulTurkey
| | - S. Prasad
- Fetal Medicine UnitSt George's University Hospitals NHS Foundation Trust, University of LondonLondonUK
| | - M. Berkkan
- Department of Obstetrics and GynecologySchool of Medicine, Koc UniversityIstanbulTurkey
| | - M. A. Mutlu
- Department of Obstetrics and Gynecology, Sancaktepe Sehit Prof Dr Ilhan Varank Training and Research HospitalUniversity of Health SciencesIstanbulTurkey
| | - A. B. Tekin
- Department of Obstetrics and Gynecology, Sancaktepe Sehit Prof Dr Ilhan Varank Training and Research HospitalUniversity of Health SciencesIstanbulTurkey
| | - E. Celik
- Department of Obstetrics and GynecologySchool of Medicine, Koc UniversityIstanbulTurkey
| | - B. Ata
- Department of Obstetrics and GynecologySchool of Medicine, Koc UniversityIstanbulTurkey
| | - M. Turgal
- Department of Obstetrics and GynecologySchool of Medicine, Koc UniversityIstanbulTurkey
| | - S. Yildiz
- Department of Obstetrics and GynecologySchool of Medicine, Koc UniversityIstanbulTurkey
| | - E. Turkgeldi
- Department of Obstetrics and GynecologySchool of Medicine, Koc UniversityIstanbulTurkey
| | - P. O'Brien
- Royal College of Obstetricians and GynaecologistsLondonUK
- University College London Hospitals, Institute for Women's HealthLondonUK
| | - P. von Dadelszen
- Institute of Women and Children's HealthSchool of Life Course and Population Sciences, King's College LondonLondonUK
| | - L. A. Magee
- Institute of Women and Children's HealthSchool of Life Course and Population Sciences, King's College LondonLondonUK
| | - E. Kalafat
- Department of Obstetrics and GynecologySchool of Medicine, Koc UniversityIstanbulTurkey
- Department of Statistics, Faculty of Arts and SciencesMiddle East Technical UniversityAnkaraTurkey
| | - N. Tug
- Department of Obstetrics and Gynecology, Sancaktepe Sehit Prof Dr Ilhan Varank Training and Research HospitalUniversity of Health SciencesIstanbulTurkey
| | - A. Khalil
- Fetal Medicine UnitSt George's University Hospitals NHS Foundation Trust, University of LondonLondonUK
- Twins Trust Centre for Research and Clinical ExcellenceSt George's University Hospitals NHS Foundation TrustLondonUK
- Vascular Biology Research CentreMolecular and Clinical Sciences Research Institute, St George's University of LondonLondonUK
| |
Collapse
|
9
|
Kantarci R, Gule. Cekic S, Türkgeldi E, Yildiz S, Keles I, Ata B. P–342 Are blastulation and clinical pregnancy rates in women with endometriomas different than those without? Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Study question
Does the presence of endometrioma during ovarian stimulation affect blastulation and clinical pregnancy rates (CPR)?
Summary answer
Blastulation rates were similar in women with endometrioma compared to women without. Likewise, CPR were comparable.
What is known already
Although relationship of endometriosis and subfertility is well-established, its mechanism is still under investigation. Decreased oocyte quality, resulting from anatomical and/or inflammatory factors is one of the prominent culprits. Most studies regarding endometriosis and oocyte quality are highly heterogeneous and effect of endometriosis on oocyte quality is yet to be determined. Blastulation is thought as a surrogate marker for oocyte quality. Thus, it may be possible that detrimental effect of the presence of endometrioma during ovarian stimulation can be indirectly assessed by blastulation.
Study design, size, duration
Records of all women who underwent assisted reproductive technology treatment at Koc University Hospital Assisted Reproduction Unit between 2016 and October 2020 were screened for this retrospective study. All women who had endometrioma(s) during ovarian stimulation were included in the study group (EG) (n = 71). They were matched with women diagnosed with tubal factor or unexplained infertility who underwent oocyte pickup within the same period to form the control group (CG) (n = 104).
Participants/materials, setting, methods
All women underwent antagonist or long protocol. All embryos were cultured until blastocyst stage regardless of the number of oocytes or embryos available. Size/location of endometriomas, number of oocytes retrieved, number of available blastocysts, positive pregnancy test per cycle and clinical pregnancy rate per cycle were recorded. Blastulation rate was calculated as number of available blasts divided by the number of metaphase-II oocytes. Embryos were transferred in a fresh or artificially prepared frozen-thawed cycle.
Main results and the role of chance
There were 71 women in EG and 104 women in CG, which included 30 women with tubal and 74 with unexplained infertility. Median endometrioma size was 26 mm(22–33). Twenty-three patients in EG had history of endometrioma excision (31.3%). Median age [35.0 years (31.0–39.0) vs 34 (32.0–36.0), p = 0.26] and serum AMH levels [1.8 (1.1 - 4.2) vs 2.3 (1.3 - 3.7) ng/dL, p = 0.91] were similar in EG and CG, respectively. Body mass index in kg/m2 [21.8 (20.2–24.6) vs 24 (21.5–27.9), p < 0.01] and infertility duration in years [2 (1–2.6) vs 3 (2–5), p < 0.01] were significantly lower in EG. Number of retrieved oocytes [8 (5–12) vs 12 (7–15.8), p < 0.01)] and metaphase-II oocytes [6 (4–10) vs 8.5 (6–12), p < 0.01] were lower in EG group compared to CG group. However, blastulation rate per MII oocyte were similar between the EG and CG [(0.25 (0.20–0.41) vs 0.30 (0.14–0.50), respectively, p = 0.58]. Adjusted analysis for age and number of MII oocytes revealed similar finding.
Positive pregnancy test per cycle was similar at 53.5% vs 61.5% in EG and CG, respectively (p = 0.3). CPR were similar between the EG and CG (45% vs 58%, respectively, p = 0.10).
Limitations, reasons for caution
Retrospective design, lack of live birth information are the main limitations of our study.
Wider implications of the findings: Presence of endometrioma during ovarian stimulation does not seem to adversely affect blastulation rates. While this is reassuring regarding oocyte quality, further research is required to assess its effect on live birth.
Trial registration number
Not applicable
Collapse
Affiliation(s)
- R Kantarci
- Ludwig Maximilian University of Munich, Faculty of Medicine, Munich, Germany
| | - S Gule. Cekic
- Koc University Hospital, Obstetrics and Gynecology, Istanbul, Turkey
| | - E Türkgeldi
- Koc University School of Medicine, Obstetrics and Gynecology, Istanbul, Turkey
| | - S Yildiz
- Koc University School of Medicine, Obstetrics and Gynecology, Istanbul, Turkey
| | - I Keles
- Koc University Hospital, Assisted Reproduction Unit, Istanbul, Turkey
| | - B Ata
- Koc University School of Medicine, Obstetrics and Gynecology, Istanbul, Turkey
| |
Collapse
|
10
|
Yildiz S, Turkgeldi E, Kalafat E, Gokyer D, Keles I, Ata B. P–692 Are live birth rate and obstetric outcomes different between immediate and delayed embryo transfers following a freeze-all cycle? A retrospective study combined with a meta-analysis. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Study question
Do livebirth rate (LBR), obstetric and perinatal outcomes vary between frozen embryo transfers (FET) in the first or subsequent menstrual cycles following a freeze-all approach?
Summary answer
Immediate FET has a higher LBR and similar perinatal outcomes than delayed FET. Quantitative synthesis of available literature shows an increased LBR with immediate transfer.
What is known already
Whether FET should be done in the first menstrual cycle following oocyte collection (OC) is controversial and the duration of a possible detrimental effect of supraphysiological sex steroid levels on pregnancy outcome is unknown. A multinational survey centers showed that, 61% of clinicians prefer to wait for a washout period before proceeding to FET, even after a failed fresh embryo transfer. Limited number of studies compared FET in the first menstrual cycle with delayed FET in a subsequent cycle with varying results. There is limited data on obstetric outcomes of pregnancies resulting from FET in the first menstrual cycle.
Study design, size, duration
198 women who underwent a freeze-all cycle followed by FET between July 2017 and June 2020 were included. 119 FET in the first menstrual cycle (<30 days from oocyte collection) and 79 FET in subsequent cycles (>30 days from oocyte collection) were retrospectively compared. MEDLINE was searched on 01 January 2021 using relevant keywords. Cohort studies comparing immediate versus delayed transfer following freeze all cycles were included and quantitative summary for LBR was obtained.
Participants/materials, setting, methods
Freeze-all was undertaken when (i) the woman is deemed to be at high risk for OHSS, (ii)serum progesterone level is > 1.5 ng/ml on the day of trigger, (iii)preimplantation genetic testing is planned, (iv)the woman will undergo surgery prior to ET, (v)couple preference.
Main results and the role of chance
Baseline characteristics were similar between the groups except for antral follicle count (22 vs 18, MD = 5, 95% CI = 0 to 8), and number of metaphase-two oocytes (13 vs 10, MD = 3, 95% CI = 1 to 6) all of which were significantly higher in the immediate transfer group. Clinical pregnancy rate (CPR) per ET was similar in two groups (50.4% vs 44.3%, RR = 1.14, 95% CI = 0.84 to 1.54). Miscarriage rate per pregnancy was significantly lower (12.3 vs 31.1, RR = 0.40, 95% CI = 0.19 to 0.84) and LBR per ET was significantly higher (42.9 vs 26.6, RR = 1.61, 95% CI = 1.06 to 2.46) in the immediate transfer group.
Median gestational age at delivery was similar (267.5 (262.5–273) vs 268 (260–271.5) days, MD = 1.00, 95% CI= –4.00 to 5.00). Median birthweight was significantly higher in the delayed transfer group (3520 vs 3195 grams, MD= –300, 95% CI= –660 to –20 grams). Birthweight percentile, height at birth and head circumference were similar between groups.
Literature search revealed 1712 studies from which nine were eligible for quantitative summary. Cumulative risk ratio showed a 10% increase in LBR with immediate transfer compared to delayed transfer (RR = 1.10, 95% CI = 1.01 – 1.20, I2=67%, 17369 embryo transfers).
Limitations, reasons for caution
Our study is limited by its retrospective design and relatively limited sample size for multivariate analyses. Yet, it is reassuring that the majority of our findings are consistent with previous publications.
Wider implications of the findings: The hypotheses generated by our retrospective findings, i.e., FET in the immediate menstrual cycle resembling fresh ETs with strong trends towards lower birthweight and lower incidence of preeclampsia is noteworthy for the design of future studies, and these outcomes should be followed and reported.
Trial registration number
None
Collapse
Affiliation(s)
- S Yildiz
- Koc University School of Medicine, Obstetrics and Gynecology, Istanbul, Turkey
| | - E Turkgeldi
- Koc University School of Medicine, Obstetrics and Gynecology, Istanbul, Turkey
| | - E Kalafat
- Koc University School of Medicine, Obstetrics and Gynecology, Istanbul, Turkey
| | - D Gokyer
- Koc University School of Medicine, Obstetrics and Gynecology, Istanbul, Turkey
| | - I Keles
- Koc University Hospital, Assisted Reproduction Unit, Istanbul, Turkey
| | - B Ata
- Koc University School of Medicine, Obstetrics and Gynecology, Istanbul, Turkey
| |
Collapse
|
11
|
Esmaeilian Y, Yildiz S, Yakin K, Oktem O. P–293 Ovarian endometriomas are heterogenous for the steroidogenic function and the expression of estrogen and progesterone receptors. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Study question
Do all ovarian endometriomas have steroidogenic function and express estrogen and progesterone receptors?
Summary answer
No, they are heterogenous for the steroidogenic function and the expression of the estrogen and progesterone receptors.
What is known already
Excessive ectopic estrogen production and up-regulation of estrogen receptor- β, which drives inflammation together with aberrant progesterone signaling leading to impaired decidualization and establishment of ectopic endometrial implants together with down-regulated progesterone receptor (PR) expression are the cardinal molecular features of the disease. However, several fundamental questions still remain to be answered as to whether all ovarian endometriomas carry these molecular aberrations and are steroidogenically active; and if so, the amount of sex steroids they produce correlate with the level of expression of steroidogenic enzymes. We aimed to address these questions in the current study.
Study design, size, duration
A molecular research study on the surgical specimens collected between April 2020 and December 2020. Seven histopathologically confirmed benign endometriotic cyst capsules obtained from the patients undergoing laparoscopic excision of unilateral ovarian endometriomas without deep infiltrating endometriosis during early follicular phase were used in the study.
Participants/materials, setting, methods
The mean age±SD (range) of the patients were 32.8±4.9 (30–39). The mean endometrioma size was 5±1.2cm (5–7.5 cm). The samples were cut into equal size pieces of 0.5x0.5cm size and cultured for one day to measure their E2and P4production; and analyzed for the expression of steroidogenic enzymes with quantitative immunoblotting and for the expression of FSH-R, ER and PR with real-time qRT-PCR methods. Luteinized granulosa cells and ovarian cortex were set as references.
Main results and the role of chance
StAR expression was consistently observed in all samples. However, we noticed significant discrepancies among the samples regarding their steroidogenic function and the expression of aromatase and 3 β-HSD enzymes. E2 production exhibited significant variation (from 5 to 1177pg/mL) from sample to sample despite comparable levels of aromatase expression. ER- βup-regulation as a cardinal molecular feature of endometriosis, was observed in all but one samples (1.46 to 5.48 folds, p < 0.0001). However, its expression level did not correlate with either aromatase expression or the amount of E2 the samples produced. A similar phenomenon was observed in P4 arm of steroidogenesis. Even though 3 β-HSD was expressed by all but one samples detectable amount of P4 was produced only by two samples (up to 15ng/mL). PR expression was down-regulated only in two samples (0.3 to 0.07 folds, p < 0.0001), and significantly up-regulated in the other samples (1.2 to 4.7 folds, p < 0.001). No correlation was found among the samples regarding the expression of PR, 3 β-HSD and P4 output. FSH-R was detected in all samples at the levels comparable to ovarian cortex but its expression level did not show any correlation with ER, aromatase expression and E2 production.
Limitations, reasons for caution
These results need to be confirmed in studies with larger sample size and different types of endometriotic lesions.
Wider implications of the findings: The regulation of steroidogenic activity of endometriomas cannot simply be explained by the expression level of the steroidogenic enzymes, underscoring the importance of other mechanisms that post-translationally regulate their enzymatic activity and metabolism of estrogen and progesterone. PR is not always down-regulated and FSH-R is commonly up-regulated in ovarian endometriomas.
Trial registration number
Not applicable
Collapse
Affiliation(s)
- Y Esmaeilian
- Koc University, Koc University Research Center for Translational Medicine KUTTAM, Istanbul, Turkey
| | - S Yildiz
- Koc University School of Medicine, Obstetrics-Gynecology and Assisted Reproduction Unit, Istanbul, Turkey
| | - K Yakin
- Koc University School of Medicine, Obstetrics-Gynecology and Assisted Reproduction Unit, Istanbul, Turkey
| | - O Oktem
- Koc University School of Medicine, Obstetrics-Gynecology and Assisted Reproduction Unit, Istanbul, Turkey
| |
Collapse
|
12
|
Turkgeldi E, Shakerian B, Yildiz S, Keles I, Ata B. P–691 How predictive is endometrial thickness for live birth after fresh and frozen-thawed embryo transfer when no cut-off is employed? Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Study question
Does endometrial thickness (EMT) predict live birth (LB) after fresh and frozen-thawed embryo transfer (ET) and is there a lower EMT cut-off for ET?
Summary answer
Once intracavitary pathology and inadvertent progesterone exposure is excluded, EMT is not predictive for LB. EMT is not linearly associated with probability of LB.
What is known already
EMT is commonly used as a marker of endometrial receptivity and in turn, assisted reproductive technology treatment success. ET is often cancelled or postponed if EMT is below an arbitrary cut-off. However, the available evidence on the relationship between EMT and LB rates is conflicting and too dubious to hold such strong stance. An overwhelming majority of the studies on the subject are retrospective, they use different arbitrary cut off values ranging between 6 to 9 mm with heterogeneous stimulation and transfer protocols.
Study design, size, duration
Records of all women who underwent fresh or frozen-thawed ET in Koc University Hospital Assisted Reproduction Unit between October 2016 - August 2019 were retrospectively screened. All women who underwent fresh or frozen-thawed blastocyst transfer during the study period were included. Every woman contributed to the study with only one transfer cycle for each category, i.e., fresh ET and frozen-thawed ET.
Participants/materials, setting, methods
After ruling out endometrial pathology, EMT was measured on the day of ovulation trigger for fresh ET cycles, and on the day of progesterone commencement for frozen-thawed ET. ET was carried out, regardless of EMT, if there was no suspicion of inadvertent progesterone exposure, i.e., due to follicular phase progesterone elevation in fresh or premature ovulation in frozen ET cycles.
Main results and the role of chance
560 ET cycles, 273 fresh and 287 frozen-thawed, were analyzed. EMT varied from 4mm to 18mm. EMT were similar between women who achieved a LB and who did not after fresh ET [10.5 (9.2 – 12.2) mm and 9 (8 – 11) mm, respectively, p = 0.11]. Ovarian stimulation characteristics and proportion of women who received a single embryo were similar (69% vs 68.3%, respectively, p = 0.91). Women who achieved a LB was significantly younger than those who did not [35 (32–38) and 37 (33–41), respectively, p < 0.01]. Women who had a LB and who did not after frozen-thawed ET had similar EMT of 8.4 (7.4 – 9.7) mm and 9 (8 – 10) mm, respectively (p = 0.38). Women who achieved a LB were significantly younger than those who did not [32 (29–35) vs 34 (30–38) years, p = 0.04]. The proportion of women who received a single ET was similar between women who achieved a LB and who did not after a FET [86/95 (90.5%) vs 181/192 (94.3%), respectively, p = 0.26].
Area under curve values of EMT for predicting LB in fresh, frozen-thawed and all ET were 0.56, 0.47 and 0.52, respectively. EMT and LB rate were not linearly correlated in fresh or frozen-thawed ET cycles.
Limitations, reasons for caution
Although our study is retrospective, no women was denied ET due to EMT in our center. Only patients undergoing ET were included in the analysis, which may introduce bias due to the selection of couples who were competent enough to produce at least one blastocyst fit for transfer.
Wider implications of the findings: Since women with thin endometrium had reasonable chance for LB even in the absence of a cut-off for EMT in this unique dataset, delaying or denying ET for any given EMT value alone does not seem justified. Further studies in which ET is carried out regardless of EMT are needed.
Trial registration number
Not applicable
Collapse
Affiliation(s)
- E Turkgeldi
- Koc University School of Medicine, Obstetrics and Gynecology, Istanbul, Turkey
| | - B Shakerian
- Koc University Hospital, Assisted Reproduction Unit, Istanbul, Turkey
| | - S Yildiz
- Koc University School of Medicine, Obstetrics and Gynecology, Istanbul, Turkey
| | - I Keles
- Koc University Hospital, Assisted Reproduction Unit, Istanbul, Turkey
| | - B Ata
- Koc University School of Medicine, Obstetrics and Gynecology, Istanbul, Turkey
| |
Collapse
|
13
|
Gunbatar H, Kaplan HS, Yildiz S. Is there a correlation between obstructive sleep-apnea syndrome severity and prolidase activity as an oxidative stress marker? Niger J Clin Pract 2020; 23:252-257. [PMID: 32031102 DOI: 10.4103/njcp.njcp_381_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Objective Obstructive sleep apnea syndrome (OSAS) is a highly prevalent breathing disorder in sleep. The aim of this study was to evaluate the relationship between OSAS and prolidase activity, the oxidative stress index (OSI), total antioxidative capacity (TAC), total oxidative capacity (TOC) and the carotid intima media thickness (CIMT). Method : After night polysomnography, 74 people were diagnosed with OSAS and simple snoring. Plasma prolidase activities, TAC and TOC were measured in blood samples taken in the morning after the sleep study. The patients' bilateral common carotid arteries were scanned. Results In total, 56 patients were in OSAS group [13 subjects 23.2% mild, 19 subjects 33.9% moderate, 24 subjects 42.8% severe] and 18 in simple snoring control group. The mean Prolidase, TOC, TAC and OSI levels were 744.7 ± 156.8, 59.2 ± 19.2, 2.12 ± 0.41, 3.12 ± 1.03, in the mild OSAS group, 761.6 ± 114.4, 57.9 ± 18.3, 2.03 ± 0.37, 3.15 ± 0.8, in the moderate OSAS group, 754.08 ± 133.9, 51.15 ± 12.1, 1.97 ± 0.27, 2.8 ± 0.82, in the severe OSAS group, and 711.9 ± 139, 52.3 ± 15.1, 1.83 ± 0.32, 3.06 ± 0.92 in the control group, respectively. Mean CIMT measurements were 0.71(±0,13) in the OSAS group and 0.76(±0.07) in the control group. Conclusion There was no difference between the control and OSAS groups in terms of the parameters studied. Further studies should be undertaken in order to clarify the relation.
Collapse
Affiliation(s)
- H Gunbatar
- Department of Pulmonary and Critical Care, Yuzuncu Yil University Medical Faculty, Kampüsü, 65090 Tusba/Van, Turkey
| | - H S Kaplan
- Anaesthesia and Reanimations, Yuzuncu Yil University Medical Faculty, Kampüsü, 65090 Tusba/Van, Turkey
| | - S Yildiz
- Endocrinology, Yuzuncu Yil University Medical Faculty, Kampüsü, 65090 Tusba/Van, Turkey
| |
Collapse
|
14
|
Akkari M, Yildiz S, Marianowski R, Monteyrol PJ, Chalumeau F, Fayoux P, Leboulanger N, Franco P, Couloigner V, Mondain M. Role of the ENT specialist in the diagnosis of pediatric obstructive sleep apnea-hypopnea syndrome (POSAHS). Part 3: sleep recordings. Eur Ann Otorhinolaryngol Head Neck Dis 2020; 137:405-410. [PMID: 32107171 DOI: 10.1016/j.anorl.2020.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
OBJECTIVES The authors present the clinical practice guidelines of the French Society of Oto-Rhino-Laryngology and Head and Neck Surgery (SFORL) concerning the role of the ENT specialist in the management of pediatric obstructive sleep apnea hypopnea syndrome (POSAHS). Part 3 is dedicated to the place of sleep recordings in the diagnosis of POSAHS. METHODS A multidisciplinary work group was commissioned to carry out a review of the scientific literature on the above topic. Based on the articles retrieved and the group members' individual experience, guidelines were drafted and graded as A, B or C or Expert Opinion by decreasing level of evidence, then reviewed by an editorial group independent of the work group. RESULTS Sleep recordings are presented according to the American Sleep Disorders Association's classification as type 1, 2, 3 or 4. Their modalities, interpretation, indications, advantages and limitations are detailed.
Collapse
Affiliation(s)
- M Akkari
- UAM d'ORL pédiatrique, département d'ORL et chirurgie cervico-faciale, hôpital Gui-de-Chauliac, CHU de Montpellier, 80, avenue Augustin-Fliche, 34295 Montpellier cedex 5, France.
| | - S Yildiz
- Département d'ORL et chirurgie cervico-faciale pédiatrique, hôpital Necker-Enfants-Malades, Assistance publique des Hôpitaux de Paris, Paris, France
| | - R Marianowski
- Département d'ORL et chirurgie cervico-faciale, hôpital Morvan, CHU de Brest, Brest, France
| | - P J Monteyrol
- Département d'ORL et chirurgie cervico-faciale, polyclinique du tondu et clinique du sommeil, hôpital Pellegrin, Bordeaux, France
| | | | - P Fayoux
- Département d'ORL et chirurgie cervico-faciale pédiatrique, hôpital Jeanne-de-Flandre, CHU de Lille, Lille, France
| | - N Leboulanger
- Département d'ORL et chirurgie cervico-faciale pédiatrique, hôpital Necker-Enfants-Malades, Assistance publique des Hôpitaux de Paris, Paris, France
| | - P Franco
- Unité de sommeil pédiatrique, hôpital Femme-Mère-Enfant, hospices civils de Lyon, Lyon, France
| | - V Couloigner
- Département d'ORL et chirurgie cervico-faciale pédiatrique, hôpital Necker-Enfants-Malades, Assistance publique des Hôpitaux de Paris, Paris, France
| | - M Mondain
- UAM d'ORL pédiatrique, département d'ORL et chirurgie cervico-faciale, hôpital Gui-de-Chauliac, CHU de Montpellier, 80, avenue Augustin-Fliche, 34295 Montpellier cedex 5, France
| |
Collapse
|
15
|
Abstract
Introduction: Restless legs syndrome (RLS) is a condition that particularly urges at night in resting and causes the need to move the legs. Although the pathophysiology has not yet been clarified, dopamine and iron metabolism and spinal cord pathologies are blamed for causing the condition. There are few studies on spinal reflex mechanisms on RLS. In the present study, we aimed to investigate the role of presynaptic inhibition (PreI) in the spinal cord in RLS.Methods: Fourteen patients with RLS and 14 controls with similar demographic characteristics were included in the study. Soleus muscle H-reflex (Ht) investigation was performed for subjects whose electrophysiologic investigation was normal. The Ht response was conditioned to the stimulation of the common peroneal nerve (CPN) (Hc). The test and conditioned stimulation intervals were kept between 10 ms, 20 ms, 30 ms, 40 ms, 50 ms, 75 ms, 100 ms, 150 ms and 200 ms. In each inter-stimulus interval, nonparametric repeat measurement evaluations were conducted with the percentage value of Hc/Ht. The Hc/Ht values of the study and control groups in the same intervals were compared separately.Results: A significant decrease was detected in Hc values in the control group in the repeat measurement values at 20 ms and 100 ms inter-stimulus intervals; however, there was not decrease in any intervals in the patient's group.Conclusion: The absence of any decrease in Hc reflexes for 20-100 ms intervals revealed that discernible PreI was vanished in RLS patients.
Collapse
Affiliation(s)
- Şule Aydin Türkoglu
- Department of Neurology, Abant İzzet Baysal University Faculty of Medicine, Bolu, Turkey
| | - Elif Sultan Bolac
- Department of Neurology, Abant İzzet Baysal University Faculty of Medicine, Bolu, Turkey
| | - Serpil Yildiz
- Department of Neurology, Abant İzzet Baysal University Faculty of Medicine, Bolu, Turkey
| | - Oya Kalaycioglu
- Biostatistics Unit, Abant İzzet Baysal University Faculty of Medicine, Bolu, Turkey
| | - Nebil Yildiz
- Department of Neurology, Abant İzzet Baysal University Faculty of Medicine, Bolu, Turkey
| |
Collapse
|
16
|
Yildiz S, Cetinkaya M, Ozbek H, Tzitzios V, Nounesis G. High-resolution birefringence investigation on the effect of surface-functionalized CdSe nanoparticles on the phase transitions of a smectic — A liquid crystal. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
17
|
Yildiz S, Ekinci O, Ucler R. The relationship between 25 hydroxy Vitamin D3 and thyroid antibodies with thyroid benign-malign neoplasms. Niger J Clin Pract 2019; 22:1224-1228. [PMID: 31489858 DOI: 10.4103/njcp.njcp_440_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Objective To study the relationship between vitamin D and thyroid antibodies with thyroid benign-malign neoplasms. Materials and Methods The vitamin D vitamin and thyroid antibodies of 179 patients who underwent thyroidectomy for thyroid nodule were retrospectively reviewed. Results The mean age of the patients was 44.97 ± 14.139. Vitamin D levels were 14.473 ± 4.9999 ng/ml in women and 19.584 ± 6.1981 ng/ml in men and the mean was 15.016 ± 5.3579 ng/ml. There was a significant relationship between sex and vitamin D level (P < 0, 05). Antithyroglobulin antibody (anti-TGB) had been detected in 95 patients and Antithyroid peroxidase antibody (anti TPO) in 58 patients. There was no significant relationship between vitamin D levels (P: 0, 65), anti-TPO positivity (P: 0, 86), and anti-TGB (P: 0, 12) with benign-malignant neoplasm of thyroid. There was no relationship between vitamin D and metastatic disease (P: 0, 30) as well. In addition, no association was found between malignancy and metastasis (P = 0.068, P = 0.14, P: 0, P = 0, respectively) with thyroid antibody positivity (anti TPO and/or anti TGB) in severe deficiency (<10 ng/ml) and deficiency (<20 ng/ml) of vitamin D. Conclusion Vitamin D deficiency or thyroid autoantibodies did not have any significant effect on thyroid malignancies or metastatic disease separately or together.
Collapse
Affiliation(s)
- S Yildiz
- Van Yuzuncu Yil University, Department of Endocrinology, Van, Turkey
| | - O Ekinci
- Lice State Hospital, Diyarbakir, Turkey
| | - R Ucler
- Van Yuzuncu Yil University, Department of Endocrinology, Van, Turkey
| |
Collapse
|
18
|
Ögün MN, Karabörk Ş, Önerli M, Türkoğlu ŞA, Yildiz S. Cerebrospinal Fluid Levels of Interleukin-17 and Interleukin-34 in Patients with Neuro-Behcet’s Syndrome. NEUROPHYSIOLOGY+ 2019. [DOI: 10.1007/s11062-019-09797-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
19
|
Bass-Stringer S, Bottrel L, Harmawan C, Yildiz S, Donner D, Kiriazis H, Weeks K, Thomas C, Bernardo B, McMullen J. Investigating the Safety of Enhanced Cardiac Phosphoinositide 3-Kinase [PI3K (p110alpha)] as a Prospective Therapeutic Gene. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
20
|
Cetinkaya M, Yildiz S, Ozbek H. The effect of -COOH functionalized carbon nanotube doping on electro-optical, thermo-optical and elastic properties of a highly polar smectic liquid crystal. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.10.078] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
21
|
Cetinkaya MC, Ustunel S, Ozbek H, Yildiz S, Thoen J. Convincing evidence for the Halperin-Lubensky-Ma effect at the N-SmA transition in alkyloxycyanobiphenyl binary mixtures via a high-resolution birefringence study. Eur Phys J E Soft Matter 2018; 41:129. [PMID: 30353409 DOI: 10.1140/epje/i2018-11738-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 10/01/2018] [Indexed: 06/08/2023]
Abstract
We present new high-resolution experimental data for the temperature behavior of optical birefringence for a series of mixture of the liquid crystals octyloxycyanobiphenyl (8OCB) and nonyloxycyanobiphenyl (9OCB) by using a rotating analyzer technique. The birefringence data have been used to probe the temperature dependence of the nematic order parameter [Formula: see text]. We have then arrived at values for possible entropy discontinuities at the nematic-smectic A transition temperature [Formula: see text] from the detailed inspection of [Formula: see text] data in the immediate vicinity of [Formula: see text]. The 9OCB mole fraction dependence of the obtained reduced entropy discontinuities has been shown to be well fitted with a crossover function which is itself consistent with the mean-field free energy expression with a non-zero cubic term arising from the Halperin-Lubensky-Ma (HLM) coupling. The obtained results are in good accordance with existing results from adiabatic scanning calorimetry (ASC). Our birefringence results and determined entropy discontinuities (consistent with calorimetry results) are in striking contrast with the recent birefringence results of Barman et al. (Phase Transit. 91, 58 (2018) published online 16 Aug. 2017) claiming second-order nematic-to-smectic A transitions for all mixtures. In this paper we present a possible explanation for this discrepancy. We have also extracted the effective critical exponent values [Formula: see text] characterizing the critical fluctuations near the N-SmA transition for all compositions by using the fact that the temperature derivative of the order parameter [Formula: see text] near [Formula: see text] exhibits the same power-law divergence as the specific heat capacity. Measurable latent heat values were extracted from optical birefringence data for mole fractions of 9OCB where the [Formula: see text] values are as low as 0.2, which is substantially lower than the tricritical value [Formula: see text]. This is qualitatively different from what has been observed so far in other liquid-crystal systems. Together with ASC data, these pecuilarities of the 8OCB+9OCB system render further convincing evidence for the presence of the HLM coupling effect at the N-SmA transition phase transition line.
Collapse
Affiliation(s)
- M C Cetinkaya
- Department of Physics, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey
| | - S Ustunel
- Department of Physics, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey
| | - H Ozbek
- Department of Physics, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey
| | - S Yildiz
- Department of Physics, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey.
| | - J Thoen
- Soft Matter and Biophysics, Department of Physics and Astronomy, KU Leuven, 3001, Leuven, Belgium
| |
Collapse
|
22
|
Turkoglu SA, Halicioglu S, Sirmatel F, Yildiz M, Yildiz N, Yildiz S. Vasculitis and neurobrucellosis: Evaluation of nine cases using radiologic findings. Brain Behav 2018; 8:e00947. [PMID: 29670827 PMCID: PMC5893346 DOI: 10.1002/brb3.947] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 01/14/2018] [Accepted: 01/26/2018] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Brucellosis is an important multisystemic disease with many different clinical symptoms, and its early diagnosis and treatment are possible. Neurobrucellosis (NB) is a rare but serious finding of brucellosis. Brucella can be seen as meningitis and encephalopathy, and it can cause cranial nerve pathologies, vascular syndromes, myopathy, spinal diseases, and psychiatric disorders. In NB, vascular syndromes secondary to inflammation are rarely seen. Here, we present nine young patients with vascular and nonspecific neuropsychiatric findings who had NB as the etiology of stroke. METHODS Nine patients who were admitted to our Neurology Clinic between 2012 and 2017 for various reasons in whom brucellosis was found in the etiology were retrospectively studied. The patients' symptoms, physical examination, laboratory and radiographic findings, treatments, and treatment responses are discussed. RESULTS Of the nine patients who presented to our clinic in the 4-year period, five were female. The average age was 49 years. Five patients had small vessel vasculitis, three had great vessel vasculitis, and one had meningoencephalitis and pons abscess. Two patients had granuloma, and one had an aneurysm. CONCLUSIONS We aimed to present our cases due to the fact that this disease should be kept in mind in the differential diagnosis of patients with stroke and similar neuropsychiatric findings.
Collapse
Affiliation(s)
- Sule Aydin Turkoglu
- Department of Neurology Abant Izzet Baysal University Medical Faculty Bolu Turkey
| | - Siddika Halicioglu
- Department of Radiology Abant Izzet Baysal University Medical Faculty Bolu Turkey
| | - Fatma Sirmatel
- Department of Infectious Diseases Abant Izzet Baysal University Medical Faculty Bolu Turkey
| | - Murside Yildiz
- Department of Intensive Care Abant Izzet Baysal University Medical Faculty Bolu Turkey
| | - Nebil Yildiz
- Department of Neurology Abant Izzet Baysal University Medical Faculty Bolu Turkey
| | - Serpil Yildiz
- Department of Neurology Abant Izzet Baysal University Medical Faculty Bolu Turkey
| |
Collapse
|
23
|
Oktan MA, Heybeli C, Yildiz S, Çavdar C, Çelik A. Should We Use Adenosine Deaminase Assay for the Differential Diagnosis of Tuberculous Peritonitis in CAPD Patients? ARCH ESP UROL 2018; 38:153. [PMID: 29563278 DOI: 10.3747/pdi.2017.00174] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- M A Oktan
- Dokuz Eylul University Hospital, Department of Nephrology, Izmir, Turkey
| | - C Heybeli
- Dokuz Eylul University Hospital, Department of Nephrology, Izmir, Turkey
| | - S Yildiz
- Dokuz Eylul University Hospital, Department of Nephrology, Izmir, Turkey
| | - C Çavdar
- Dokuz Eylul University Hospital, Department of Nephrology, Izmir, Turkey
| | - A Çelik
- Dokuz Eylul University Hospital, Department of Nephrology, Izmir, Turkey
| |
Collapse
|
24
|
|
25
|
Cavdar Z, Ural C, Celik A, Arslan S, Terzioglu G, Ozbal S, Yildiz S, Ergur UB, Guneli E, Camsari T, Akdogan G. Protective effects of taurine against renal ischemia/reperfusion injury in rats by inhibition of gelatinases, MMP-2 and MMP-9, and p38 mitogen-activated protein kinase signaling. Biotech Histochem 2017; 92:524-535. [PMID: 28895768 DOI: 10.1080/10520295.2017.1367033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Dysregulated expression of matrix metalloproteinases (MMPs) is closely associated with the pathogenesis of renal ischemia/reperfusion injury (I/R). The production of excessive reactive oxygen species (ROS) causes tissue damage. Increased ROS production causes activation of p38 mitogen-activated protein kinase (MAPK) signaling, which participates in gene regulation of MMPs, especially MMP-2 and MMP-9 (gelatinases). Taurine (2-aminoethanesulfonic acid) in mammalian cells functions in bile acid conjugation, maintenance of calcium homeostasis, osmoregulation, membrane stabilization, and antioxidation, antiinflammatory, and antiapoptotic action. We investigated the effects of taurine and the possible role of p38 MAPK signaling on regulation of MMP-2 and MMP-9 in a renal I/R injury model in rats. Rats were divided into three groups: sham, I/R, and I/R + taurine treated. After a right nephrectomy, I/R was induced by clamping the left renal pedicle for 1 h followed by 6 h reperfusion. Taurine was administered 45 min prior to induction of ischemia. Renal function was assessed by serum creatinine and blood urea nitrogen (BUN) levels. Tubule injury and structural changes were evaluated by light microscopy. Malondialdehyde (MDA) levels were analyzed by high performance liquid chromatography (HPLC). Superoxide dismutase (SOD) activity levels were measured using a colorimetric kit. mRNA expression of MMP-2 and MMP-9 was determined by real-time polymerase chain reaction. MMP-2 and MMP-9 activities were measured using a fluorimetric kit. Phosphorylated p38 (p-p38) and total p38 MAPK protein expressions were evaluated by western blot. Taurine pretreatment significantly attenuated renal dysfunction and histologic damage, such as renal tubule dilation and loss of brush borders. The pretreatment also decreased the MDA level and attenuated the reduction of SOD activity in the kidney during I/R. Taurine pretreatment also decreased significantly both MMP-2 and MMP-9 mRNA expression and MMP-9 activity induced by I/R. In addition, the activity of p38 MAPK signaling was down-regulated significantly by taurine administration. Inhibition of MMP-2 and MMP-9 expression and MMP-9 activity caused by taurine may be associated with suppression of p38 MAPK activation during I/R induced renal injury in rats. Therefore, taurine administration may prove to be a strategy for attenuating renal I/R injury.
Collapse
Affiliation(s)
- Z Cavdar
- a Department of Molecular Medicine , Health Sciences Institute, Dokuz Eylul University , Izmir
| | - C Ural
- a Department of Molecular Medicine , Health Sciences Institute, Dokuz Eylul University , Izmir
| | - A Celik
- b Department of Laboratory Animal Science , Health Sciences Institute, Dokuz Eylul University , Izmir
| | - S Arslan
- c Department of Biology, Faculty of Science , Pamukkale University , Denizli
| | - G Terzioglu
- c Department of Biology, Faculty of Science , Pamukkale University , Denizli
| | - S Ozbal
- d Department of Histology and Embryology , Faculty of Medicine, Dokuz Eylul University , Izmir
| | - S Yildiz
- e Department of Nephrology, Faculty of Medicine , Dokuz Eylul University , Izmir
| | - U B Ergur
- d Department of Histology and Embryology , Faculty of Medicine, Dokuz Eylul University , Izmir
| | - E Guneli
- b Department of Laboratory Animal Science , Health Sciences Institute, Dokuz Eylul University , Izmir
| | - T Camsari
- e Department of Nephrology, Faculty of Medicine , Dokuz Eylul University , Izmir
| | - G Akdogan
- f School of Medicine , Izmir University of Economics , Izmir , Turkey
| |
Collapse
|
26
|
Sereflican M, Yurttas V, Ozyalvacli G, Terzi EH, Turkoglu SA, Yildiz S, Ilgaz Y, Seyhan S, Oral M, Dagli M. The histopathological and electrophysiological effects of thymoquinone and methylprednisolone in a rabbit traumatic facial nerve paralysis model. Am J Otolaryngol 2016; 37:407-15. [PMID: 27311344 DOI: 10.1016/j.amjoto.2016.05.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 05/12/2016] [Accepted: 05/16/2016] [Indexed: 01/26/2023]
Abstract
OBJECTIVE We aimed to determine the effects of methylprednisolone and thymoquinone on nerve healing in a traumatic facial nerve paralysis animal model. SUBJECTS AND METHODS Twenty-four rabbits were randomly divided into 4 groups: group I: control group received no medication and no trauma; group II: sham group received no medication after facial nerve trauma group III: 5mg/kg/day thymoquinone administered; group IV: 1mg/kg/day methylprednisolone administered. An initial electrophysiological assessment was performed in all the animals. The buccal branch of the facial nerve was then clipped to form a traumatic facial paralysis model. The drugs were administered for two weeks once a day. At the end of the second month, the electrophysiological assessments were performed and the distal part of the traumatic facial nerve were dissected and examined under light microscopy. RESULTS Best nerve regeneration was observed in the control and the thymoquinone groups, respectively, whereas the weakest regeneration was determined in the sham group. Thymoquinone and methylprednisolone significantly increased nerve recovery, as measured by histopathological scores and electrophysiological assessment. In the thymoquinone group, due to postoperative amplitude, axon diameter and thickness of myelin sheath values were significantly further increased nerve regeneration compared to that of the methylprednisolone group and these values were close to those of the values of the control group. CONCLUSION Thymoquinone was slightly better than methylprednisolone for functional nerve recovery. The neuroprotective effect of thymoquinone was attributed to its antioxidant and anti-inflammatory effects. Thymoquinone can have a new treatment option to ameliorate the nerve injury.
Collapse
Affiliation(s)
- Murat Sereflican
- Department of Otolaryngology, Abant Izzet Baysal University, Faculty of Medicine, Bolu, Turkey.
| | - Veysel Yurttas
- Department of Otolaryngology, Abant Izzet Baysal University, Faculty of Medicine, Bolu, Turkey
| | - Gulzade Ozyalvacli
- Department of Pathology, Abant Izzet Baysal University, Faculty of Medicine, Bolu, Turkey
| | - Elcin Hakan Terzi
- Department of Medical Histology and Embryology, Abant Izzet Baysal University, Faculty of Medicine, Bolu, Turkey
| | - Sule Aydin Turkoglu
- Department of Neurology, Abant Izzet Baysal University, Faculty of Medicine, Bolu, Turkey
| | - Serpil Yildiz
- Department of Neurology, Abant Izzet Baysal University, Faculty of Medicine, Bolu, Turkey
| | - Yasin Ilgaz
- Department of Medical Histology and Embryology, Gulhane Military Medical Academy, Ankara, Turkey
| | - Sinan Seyhan
- Department of Otolaryngology, Abant Izzet Baysal University, Faculty of Medicine, Bolu, Turkey
| | - Mesut Oral
- Department of Otolaryngology, Abant Izzet Baysal University, Faculty of Medicine, Bolu, Turkey
| | - Muharrem Dagli
- Department of Otolaryngology, Abant Izzet Baysal University, Faculty of Medicine, Bolu, Turkey
| |
Collapse
|
27
|
Yildiz D, Balci M, Yildiz S. P-004 Immunohistochemical Expression of LRG5 and CD44 in Colorectal Polyps and Adenocarcinomas: Implications for Carcinogenesis. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw199.04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
28
|
Okur A, Kantarci M, Karaca L, Yildiz S, Sade R, Pirimoglu B, Keles M, Avci A, Çankaya E, Schmitt P. Non-contrast-enhanced imaging of haemodialysis fistulas using quiescent-interval single-shot (QISS) MRA: a feasibility study. Clin Radiol 2016; 71:244-9. [DOI: 10.1016/j.crad.2015.11.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Revised: 10/30/2015] [Accepted: 11/17/2015] [Indexed: 11/16/2022]
|
29
|
Korkmaz B, Yildiz S, Yildiz N. Sympathetic Skin Responses from the Neck Area in Patients with Unilateral Migraine. Noro Psikiyatr Ars 2015; 52:151-156. [DOI: 10.5152/npa.2015.7601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Accepted: 03/24/2014] [Indexed: 11/22/2022] Open
|
30
|
Cengiz H, Dagdeviren H, Kaya C, Yildiz S, Ekin M. Successful management of a second-trimester post-abortion hemorrhage with the Bakri balloon tamponade. CLIN EXP OBSTET GYN 2015. [DOI: 10.12891/ceog1722.2015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
|
31
|
Cengiz H, Dagdeviren H, Kaya C, Yildiz S, Ekin M. Successful management of a second-trimester post-abortion hemorrhage with the Bakri balloon tamponade. CLIN EXP OBSTET GYN 2015; 42:246-247. [PMID: 26054131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Hemorrhage after abortion is rare but it is a significant cause of abortion-related mortality and morbidity. Conservative management of hemorrhage is gaining popularity. The authors describe a case which a uterine tamponade balloon which was successfully used to control second-trimester post-abortion hemorrhage.
Collapse
|
32
|
Menzilcioglu MS, Duymus M, Kuskonmaz SM, Ozkan F, Avcu S, Yildiz S. Re: ultrasonographic elastography of thyroid nodules: is adding strain ratio to colour mapping better? Clin Radiol 2014; 69:1312. [PMID: 25443646 DOI: 10.1016/j.crad.2014.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 09/03/2014] [Indexed: 10/24/2022]
|
33
|
Tokgöz Ö, Unal I, Turgut GG, Yildiz S. The value of liver and spleen ADC measurements in the diagnosis and follow up of hepatic fibrosis in chronic liver disease. Acta Clin Belg 2014; 69:426-32. [PMID: 25103596 DOI: 10.1179/2295333714y.0000000062] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
AIMS To evaluate the value of spleen and liver apparent diffusion coefficients (ADC) in chronic liver disease patients, with and without hepatocellular carcinoma (HCC), and to investigate the use of diffusion-weighted imaging (DWI) in the diagnosis and follow-up of hepatic fibrosis. MATERIALS AND METHODS This study population comprised 68 chronic liver disease patients (Group 1) and 70 healthy volunteers as controls (Group 2). In Group 1, 40 patients had chronic hepatitis-B, 20 had chronic hepatitis-C, 5 had non-alcoholic steatohepatitis and 3 had alcoholic steatohepatitis. Diagnosis of chronic liver disease was made by percutaneous liver biopsy and the degree of fibrosis (stage) was determined using the METAVIR scoring system. HCC diagnosis was made with a lesion biopsy. The patient group was subdivided based on the degree of fibrosis (F1, F2, F3 and F4) and presence of HCC. After patient and control groups underwent b-value 600 s/mm(2) DWI examination, liver and spleen ADC values were mapped and measured. The ADC values of the patient groups (F1, F2, F3, F4; with HCC, without HCC) were compared with each other and with the control group. RESULTS Liver ADC values were lower in Group 1 compared to Group 2 (P<0·001). There was a statistically significant difference between the patient and control groups liver right lobe, left lobe and caudate lobe ADC values (P<0·001). Comparing the F1, F2, F3 and F4 groups, there was no statistically significant difference found in terms of ADC values (P>0·05). However, as degree of fibrosis increased there was a reduction in ADC values, though not statistically significant. Comparing the groups with HCC and without HCC, there was no statistically significant difference in ADC values (P>0·05). There was no statistical difference in average spleen ADC values between patient and control groups (P>0·05). CONCLUSIONS In chronic liver disease, ADC values were lower. As the degree of liver fibrosis increased, ADC levels decreased, though the relationship between ADC values and fibrosis degree was not statistically significant. Quantitative DWI may help in the diagnosis of fibrosis in chronic liver disease patients, however as it does not show the degree of fibrosis, its use in treatment planning and follow-up is controversial. Spleen DWI measurement is not a sufficient method to diagnose and determine the degree of fibrosis in chronic liver disease patients.
Collapse
|
34
|
Onur I, Oz F, Yildiz S, Kuplay H, Yucel C, Sigirci S, Elitok A, Pilten S, Kasali K, Yasar Cizgici A, Erentug V, Dinckal HM. A decreased serum omentin-1 level may be an independent risk factor for peripheral arterial disease. INT ANGIOL 2014; 33:455-460. [PMID: 25294287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
AIM Recent evidence suggests that omentin-1, a visceral adipose-derived cytokine, may play a role in atherosclerosis The aim of this study was to evaluate whether serum omentin-1 levels are associated with peripheral artery disease (PAD) and its severity. METHODS The present study was cross-sectional and observational. We enrolled 123 patients with PAD and 50 age-matched subjects without PAD. The cardiovascular risk factors, ankle-brachial index (ABI), and serum omentin-1 levels were assessed in all participants RESULTS Patients with PAD had significantly lower omentin-1 levels than those without PAD (206. ±48.4 vs. 345. ±80 ng/mL, respectively; 0.001). A correlation analysis revealed positive correlations between the omentin-1 level and the ABI ( 0.52, P=0.008). After adjusting for cardiovascular risk factors, a decreased omentin-1 level was found to be an independent predictor of both PAD and its severity as measured by ABI in multivariate logistic regression analysis. CONCLUSION The current study suggests a strong association between decreased serum omentin-1 levels and PAD and its severity. Thus, omentin-1 may be a novel biomarker for PAD.
Collapse
Affiliation(s)
- I Onur
- Department of Cardiology, Istanbul School of Medicine, Istanbul University, Istanbul, Turkey -
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Menzilcioglu M, Duymus M, Avcu S, Ozkan F, Yildiz S. Re: ECG-gated quiescent-interval single-shot MR angiography of the lower extremities: Initial experience at 3 T. Clin Radiol 2014; 69:1092. [DOI: 10.1016/j.crad.2014.04.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Accepted: 04/22/2014] [Indexed: 11/27/2022]
|
36
|
Abstract
This study aimed to investigate the kinematic and kinetic changes when resistance is applied in horizontal and vertical directions, produced by using different percentages of body weight, caused by jumping movements during a dynamic warm-up. The group of subjects consisted of 35 voluntary male athletes (19 basketball and 16 volleyball players; age: 23.4 ± 1.4 years, training experience: 9.6 ± 2.7 years; height: 177.2 ± 5.7 cm, body weight: 69.9 ± 6.9 kg) studying Physical Education, who had a jump training background and who were training for 2 hours, on 4 days in a week. A dynamic warm-up protocol containing seven specific resistance movements with specific resistance corresponding to different percentages of body weight (2%, 4%, 6%, 8%, 10%) was applied randomly on non consecutive days. Effects of different warm-up protocols were assessed by pre-/post- exercise changes in jump height in the countermovement jump (CMJ) and the squat jump (SJ) measured using a force platform and changes in hip and knee joint angles at the end of the eccentric phase measured using a video camera. A significant increase in jump height was observed in the dynamic resistance warm-up conducted with different percentages of body weight (p < 0.05). On the other hand, no significant difference in different percentages of body weight states was observed (p > 0.05). In jump movements before and after the warm-up, while no significant difference between the vertical ground reaction forces applied by athletes was observed (p > 0.05), in some cases of resistance, a significant reduction was observed in hip and knee joint angles (p < 0.05). The dynamic resistance warm-up method was found to cause changes in the kinematics of jumping movements, as well as an increase in jump height values. As a result, dynamic warm-up exercises could be applicable in cases of resistance corresponding to 6-10% of body weight applied in horizontal and vertical directions in order to increase the jump performance acutely.
Collapse
Affiliation(s)
- M Cilli
- School of Physical Education and Sport, Department of Coaching Education, Sakarya University, Sakarya, Turkey
| | - E Gelen
- School of Physical Education and Sport, Department of Coaching Education, Sakarya University, Sakarya, Turkey
| | - S Yildiz
- School of Physical Education and Sport, Department of Coaching Education, Sakarya University, Sakarya, Turkey
| | - T Saglam
- School of Physical Education and Sport, Department of Coaching Education, Sakarya University, Sakarya, Turkey
| | - Mh Camur
- School of Physical Education and Sport, Department of Coaching Education, Sakarya University, Sakarya, Turkey
| |
Collapse
|
37
|
Boyaci N, Boyaci A, Karakas O, Karakaş E, Yildiz S, Kocarslan S. Giant benign Chondroid Syringoma in the elbow. Clin Ter 2014; 165:207-9. [PMID: 25203335 DOI: 10.7417/ct.2014.1735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Chondroid syringoma (CS) is a rarely seen benign tumor rooted in the epithelial and mesenchymal cells of the skin. It is generally localized in the head and neck region and rarely in the extremities. A case is presented here of a giant CS in the rarely seen location of the elbow. A 55-year old male presented at our hospital with the complaint of a slow-growing painless mass in the left elbow. On the left elbow radiograph, mass opacity was observed with a regular border surrounded by a fine radiolucent line within the subcutaneous tissue adjacent to the humerus in the posterior of the elbow. On the contrast elbow MRI mass was observed lobular contours, a regular border and isointensity to muscle in the subcutaneous fat plans. Hypointense linear images were observed in the mass. The lesions demonstrate evident enhancement. An excisional biopsy was performed. A diagnosis of benign CS was made histopathologically. Especially in the differential diagnosis of slow growing cutaneous and subcutaneous nodules in the extremities, CS should feature when fibrous septa are seen on MRI.
Collapse
Affiliation(s)
- N Boyaci
- Departments of Radiology, Harran University Medical School, Sanliurfa, Turkey
| | - A Boyaci
- Departments of Physical Medicine and Rehabilitation, Harran University Medical School, Sanliurfa, Turkey
| | - O Karakas
- Departments of Radiology, Harran University Medical School, Sanliurfa, Turkey
| | - E Karakaş
- Departments of Radiology, Harran University Medical School, Sanliurfa, Turkey
| | - S Yildiz
- Departments of Radiology, Harran University Medical School, Sanliurfa, Turkey
| | - S Kocarslan
- Departments of Pathology, Harran University Medical School, Sanliurfa, Turkey
| |
Collapse
|
38
|
Boyaci N, Karakas E, Dokumacı DS, Yildiz S, Cece H. Evaluation of left renal vein and inferior vena cava variations through routine abdominal multi-slice computed tomography. Folia Morphol (Warsz) 2014; 73:159-63. [PMID: 24902094 DOI: 10.5603/fm.2014.0017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2013] [Revised: 12/16/2013] [Accepted: 12/17/2013] [Indexed: 11/25/2022]
|
39
|
Yildiz S, Dokumaci D, Boyacı N, Karakas E. Re: The prevalence of incidentally detected adrenal enlargement on CT. Clin Radiol 2014; 69:658. [DOI: 10.1016/j.crad.2014.01.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 01/23/2014] [Indexed: 10/25/2022]
|
40
|
Inci F, Atmaca M, Ozturk M, Yildiz S, Koceroglu R, Sekeroglu R, Ipekci SH, Kebapcilar L. Pantoprazole may improve beta cell function and diabetes mellitus. J Endocrinol Invest 2014; 37:449-54. [PMID: 24682913 DOI: 10.1007/s40618-013-0040-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2013] [Accepted: 12/06/2013] [Indexed: 01/02/2023]
Abstract
BACKGROUND Proton pump inhibitors induce hypergastrinemia by suppressing gastric acidity. Gastrin has incretin-like stimulating actions on beta cells. Proton pump inhibitors have been shown to decrease glycosylated hemoglobin. AIM We aimed to observe changes in beta cell function in diabetic and non-diabetic subjects given pantoprazole for an acid-related ailment. METHODS Seventy-nine male patients (38 non-diabetic and 41 type-2 diabetic receiving only metformin therapy) were followed for 12 weeks after pantoprazole 40 mg/day was given. Fasting plasma glucose, HbA1c, fasting insulin, Pancreatic B cell function (HOMA-B), proinsulin and c-peptide levels were measured before and after the treatment. RESULTS In non-diabetic patients (n = 38), FPG decreased, whereas c-peptide, log-HOMA-B, increased significantly (p = 0.002, p = 0.03, p = 0.042, respectively) after 12 weeks of pantoprazole administration. In type 2 diabetic patients, FPG, HbA1c and weight decreased, whereas log-HOMA-B, c-peptide and log-proinsulin levels increased significantly after pantoprazole treatment (p = 0.003, p = 0.007, p < 0.001; p < 0.001; p = 0.017, p = 0.05, respectively). After pantoprazole treatment, pancreatic B-cell function was correlated with c-peptide and insulin and inversely with FBG and HbA1c levels in the whole group (r = 0.37, p = 0.001; r = 0.60, p < 0.001, r = -0.29, p = 0.011 and r = -0.28, p = 0.013, respectively). After pantoprazole treatment, HbA1c was correlated with FBG (r = 0.75, p < 0.001) and inversely with only log-HOMA-B level (r = -0.28, p = 0.013). CONCLUSIONS Pantoprazole administration seems to correlate with increased beta cell function. Pantoprazole administration improves HbA1c, HOMA-B, c-peptide and proinsulin levels. Since beta cell loss plays a significant role in the pathogenesis of type 2 diabetes, PPI-based therapies may be useful in the treatment of diabetes.
Collapse
Affiliation(s)
- F Inci
- Department of Internal Medicine, University of Yuzuncu Yil, Van, Turkey
| | | | | | | | | | | | | | | |
Collapse
|
41
|
Taskiran C, Erdem O, Onan A, Vural C, Arisoy O, Yildiz S, Guner H. Maspin expression in endometrial hyperplasia and carcinoma, and its relation with angiogenesis. EUR J GYNAECOL ONCOL 2014; 35:134-139. [PMID: 24772914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
AIM The purpose of this study was to evaluate the maspin expression in endometrial hyperplasia and cancer, and also to investigate its relation with angiogenesis. MATERIALS AND METHODS A total of 19 women with complex atypical hyperplasia, 44 patients with simple hyperplasia without atypia, and 67 patients with endometrial carcinoma were included. Maspin expression was assessed by immunohistochemistry (IHC), and tested for possible significant relation with age, FIGO stage, histologic type, grade, depth of myometrial invasion (MI), lymphovascular space involvement (LVSI), lymph node metastasis, and overall survival (OS). Angiogenesis was determined by vascular endothelial growth factor (VEGF) staining. RESULTS Maspin expression was detected in only three patients with endometrial hyperplasia (5%). In patients with endometrial cancer, cytoplasmic and nuclear maspin expressions were detected in 36 (53.7%) and 18 (26.9%) patients, respectively. No significant relation was noted between staining localizations and prognostic variables. The five-year OS rate for patients with cytoplasmic staining was 91%, compared to 87% for patients without staining (p = 0.31). These values for nuclear expression were 100% and 87%, respectively (p = 0.16). The cytoplasmic and nuclear maspin expressions were found to be significantly correlated with VEGF (r = 0.278, p = 0.02 and r = 0.295, p = 0.01, respectively). DISCUSSION This is the first study to demonstrate the relation between maspin expression and angiogenesis in endometrial cancer. Although no survival difference was noted for cytoplasmic or nuclear maspin expressions, a tendency was detected for nuclear staining. Further series will clarify the exact prognostic role of maspin expression in gynecological malignancies including endometrial cancer.
Collapse
|
42
|
Bozkurt N, Yildiz S, Isik G. Total Laparoscopic Hysterectomy: Learning Curve of a Single Surgeon with 40 Cases. J Minim Invasive Gynecol 2013. [DOI: 10.1016/j.jmig.2013.08.509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
43
|
Kaskatepe B, Yildiz S. Investigation of Association between Slime Production by Candida Spp and Susceptibility to Fluconazole and Voriconazole. TROP J PHARM RES 2013. [DOI: 10.4314/tjpr.v12i5.24] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
44
|
Çetinkaya MC, Yildiz S, Özbek H, Losada-Pérez P, Leys J, Thoen J. High-resolution birefringence investigation of octylcyanobiphenyl (8CB): an upper bound on the discontinuity at the smectic-A to nematic phase transition. Phys Rev E Stat Nonlin Soft Matter Phys 2013; 88:042502. [PMID: 24229196 DOI: 10.1103/physreve.88.042502] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Indexed: 06/02/2023]
Abstract
We report optical birefringence data by two different methods with high temperature resolution for octylcyanobiphenyl (8CB) near the smectic-A to nematic (Sm-A-N) phase transition temperature T(AN). Within the resolution of our experiments, we find that the Sm-A-N phase transition is continuous. For a possible discontinuity in the orientational order parameter S(T) at T(AN), we arrive at an upper limit of 0.0002, which is substantially smaller than other estimates in literature, but consistent with the value of 0.00008 derived from the upper limit of the latent heat from high-resolution adiabatic scanning calorimetry (ASC), which is itself consistent with the Halperin-Lubensky-Ma theory. The temperature derivative of the order parameter exhibits a power law divergence with a critical exponent that is consistent with the value α = 0.31 ± 0.03 for the specific heat capacity obtained by ASC.
Collapse
Affiliation(s)
- M C Çetinkaya
- Department of Physics, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey and Piri Reis University, 34970 Tuzla, Istanbul, Turkey
| | | | | | | | | | | |
Collapse
|
45
|
Karakas E, Yildizhan M, Karakas O, Boyaci FN, Cullu N, Cece H, Yildiz S, Sak ZHA. Examining cerebral metabolic abnormalities in chronic obstructive pulmonary disease (COPD) patients by localized proton magnetic resonance spectroscopy (MRS). Clin Ter 2013; 164:e179-82. [PMID: 23868634 DOI: 10.7417/ct.2013.1565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
PURPOSE The study was planned based on the hypothesis that cerebral metabolism is impaired in chronic obstructive pulmonary disease (COPD) by using localized in vivo proton magnetic resonance spectroscopy. MATERIALS AND METHODS The study comprised 30 male patients, aged 45-70 years, with moderate level COPD and an aged matched group of 30 healthy males as the control group. Cerebral metabolism was investigated with proton magnetic resonance spectroscopy (MRS) using multivoxel technique. Data normal distribution conformity was evaluated by the One Sample Kolmogorov Smirnov Test and homogeneity by the One-Way ANOVA test. For both the COPD and control group, data were obtained as mean, standard deviations, minimum and maximum values. Independent sample t-test was used for the comparison of means between the two groups. RESULTS The frontal and parietal white matter in patients with COPD showed an overall reduction in cerebral metabolites. The NAA (N-acetylaspartate)/Cr (Creatinine), Cho (Choline)/Cr ratios of the cerebral frontal and parietal white matter regions in the COPD group were significantly lower than the control group. CONCLUSIONS The findings of this study through the use of MRS confirmed that most patients with symptomatic COPD have cerebral metabolic abnormalities.
Collapse
Affiliation(s)
- E Karakas
- Department of Radiology, Harran University, Faculty of Medicine, Şanlıurfa, Turkey.
| | | | | | | | | | | | | | | |
Collapse
|
46
|
|
47
|
Yildiz S, Boyaci N, Karakas E, Boyaci A. Re: Osteoarthritis of the thumb carpometacarpal joint: correlation of ultrasound appearances to disability and treatment response. Clin Radiol 2013; 68:868. [PMID: 23692805 DOI: 10.1016/j.crad.2013.03.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2013] [Accepted: 03/29/2013] [Indexed: 11/19/2022]
|
48
|
Uslu U, Sandal S, Cumbul A, Yildiz S, Aydin M, Yilmaz B. Evaluation of estrogenic effects of polychlorinated biphenyls and organochlorinated pesticides using immature rat uterotrophic assay. Hum Exp Toxicol 2013; 32:476-82. [DOI: 10.1177/0960327112472999] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In this study, we investigated the effects of polychlorinated biphenyls (PCBs) and organochlorinated pesticides on the serum levels of luteinising hormone (LH), follicle stimulating hormone (FSH) and weights and histomorphometry of uterine tissue in immature female rats using uterotrophic assay. A total of 36 rats were randomly divided into six groups ( n = 6 per group) as control, oestradiol (E2, 100 μg/kg), PCB 180, Aroclor 1221, endosulfan and mirex at 10 mg/kg dosage. After 3 days of injections (subcutaneous), animals were decapitated and blood samples were collected. Uteri were dissected, weighed out and then fixed in 10% formaldehyde. They were processed for histomorphometry. The serum levels of LH and FSH were determined by enzyme immunoassay. Uterine weight was significantly increased by E2 and reduced by mirex ( p < 0.001 and p < 0.05, respectively). Total volume of uterus was significantly raised by E2, Aroclor 1221 and endosulfan compared with that of the control group ( p < 0.01). The ratio of epithelium was significantly increased by E2, PCBs and pesticides ( p < 0.01). The uterine cavity ratio was decreased by aroclor ( p < 0.01), PCB 180 and mirex ( p < 0.05). The serum levels of LH did not significantly differ among the groups but the levels of FSH were decreased by PCB 180 and endosulfan ( p < 0.05 and p < 0.01, respectively). These findings suggest that PCB 180, Aroclor 1221 and endosulfan may be estrogenic in immature uterotrophic assay.
Collapse
Affiliation(s)
- U. Uslu
- Faculty of Medicine, Department of Histology, Yeditepe University, Istanbul, Turkey
| | - S. Sandal
- Faculty of Medicine, Department of Physiology, Inonu University, Malatya, Turkey
| | - A. Cumbul
- Faculty of Medicine, Department of Histology, Yeditepe University, Istanbul, Turkey
| | - S. Yildiz
- Faculty of Medicine, Department of Physiology, Inonu University, Malatya, Turkey
| | - M. Aydin
- Faculty of Medicine, Department of Physiology, Mustafa Kemal University, Hatay, Turkey
| | - B. Yilmaz
- Faculty of Medicine, Department of Physiology, Yeditepe University, Istanbul, Turkey
| |
Collapse
|
49
|
Altunrende B, Yildiz S, Kandi B, Yildiz N. Sympathetic skin responses from the scalp evoked by electrical stimulation in seborrheic dermatitis. J Dermatol 2013; 40:458-62. [PMID: 23442143 DOI: 10.1111/1346-8138.12114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Accepted: 01/06/2013] [Indexed: 11/30/2022]
Abstract
Although the role of autonomic nervous system in seborrheic dermatitis (SD) is still unclear, seborrhea is sometimes accepted as a sign of autonomic dysfunction in several nervous system diseases. Therefore, we aimed to investigate the sympathetic nervous system (SNS) activity in SD by recording sympathetic skin responses (SSR) from the scalp (S-SSR). Thirty-one control subjects and 22 SD patients were studied by evoking right and left S-SSR with electrical stimulation of the right median nerve at the wrist. Mean latencies and maximum amplitudes were calculated for both sides in each group. In seven out of 31 control subjects and in 13 out of 22 patients, the S-SSR could not be elicited on either side. There were four subjects with unilateral response in the patient group. There were significantly more non-responders among the patients with SD (P < 0.000). This study suggests that in SD, the autonomic nervous system may be involved. The S-SSR is a new site for recording SSR. The responses are relatively symmetrical and can be evoked easily by electrical stimulation, and may be used to evaluate the SNS function in SD patients and also in healthy subjects.
Collapse
Affiliation(s)
- Burcu Altunrende
- Department of Neurology, Istanbul Bilim University Medical Faculty, Istanbul, Turkey.
| | | | | | | |
Collapse
|
50
|
Yildiz S, Boyacı N, Karakas O, Karakas E, Cece H. Re: Bovine aortic arch: A novel association with thoracic aortic dilation. Clin Radiol 2012; 67:618; author reply 618. [DOI: 10.1016/j.crad.2012.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2012] [Accepted: 01/12/2012] [Indexed: 10/28/2022]
|