scholarly journals Transcranial doppler findings in basilar artery dolichoectasia: a case control study

2021 ◽  
Vol 9 (4) ◽  
pp. 177-188
Author(s):  
Zaid Hussein ◽  
Keyword(s):  
Blood Flow ◽  
Basilar Artery ◽  
Transcranial Doppler ◽  
Case Control Study ◽  
Peak Systolic Velocity ◽  
Case Control ◽  
Control Group ◽  
Stroke Patients ◽  
Significant Difference ◽  
Control Study

Basilar artery dolichoectasia (BAD) is a disorder characterized by dilatation, elongation and tortuosity of the basilar artery. Transcranial Doppler ultrasound (TCD) is a useful tool that can detect blood flow in intracranial vessels including basilar artery (BA). Few studies have been conducted on blood flow changes in BAD. This study was conducted to evaluate the Doppler parameters in dolichoectatic BA and to assess if there is any difference in TCD findings between stroke and non-stroke BAD patients. A case-control study was conducted on 35 patients diagnosed with BAD (26 male, 9 female) and 35 age- and gender-matched control group (without BAD) at the Middle Euphrates Neuroscience Center, Al-Sader Medical City, Al-Najaf, Iraq. Dolichoectasia was diagnosed on non-enhanced brain CT scan using established imaging criteria according to Dan Deng et al criteria. Doppler flow for control and stroke cases was recorded. The parameters measured on TCD were peak systolic velocity (PSV), end diastolic velocity (EDV) mean blood velocity (MBV), pulsatility index (PI) and resistive index (RI). After logistic regression for adjustment for the significant confounders, there was statistically significant difference in Doppler parameters between both groups including decrease in each of PSV, EDV and MBV while both PI and RI weren’t statistically significant. Among BAD patients, there was statistically significant difference in all TCD parameters between stroke and non-stroke patients (PSV EDV, MBV, PI and RI). BAD was associated with a decrease in flow velocities as measured by TCD. Furthermore, among BAD patients, those with stroke had lower values for all Doppler parameters than non-stroke patients.

scholarly journals Transcranial doppler findings in basilar artery dolichoectasia: a case control study

2021 ◽  
Vol 9 (4) ◽  
pp. 177-188
Keyword(s):  
Blood Flow ◽  
Basilar Artery ◽  
Transcranial Doppler ◽  
Case Control Study ◽  
Peak Systolic Velocity ◽  
Case Control ◽  
Control Group ◽  
Stroke Patients ◽  
Significant Difference ◽  
Control Study

Basilar artery dolichoectasia (BAD) is a disorder characterized by dilatation, elongation and tortuosity of the basilar artery. Transcranial Doppler ultrasound (TCD) is a useful tool that can detect blood flow in intracranial vessels including basilar artery (BA). Few studies have been conducted on blood flow changes in BAD. This study was conducted to evaluate the Doppler parameters in dolichoectatic BA and to assess if there is any difference in TCD findings between stroke and non-stroke BAD patients. A case-control study was conducted on 35 patients diagnosed with BAD (26 male, 9 female) and 35 age- and gender-matched control group (without BAD) at the Middle Euphrates Neuroscience Center, Al-Sader Medical City, Al-Najaf, Iraq. Dolichoectasia was diagnosed on non-enhanced brain CT scan using established imaging criteria according to Dan Deng et al criteria. Doppler flow for control and stroke cases was recorded. The parameters measured on TCD were peak systolic velocity (PSV), end diastolic velocity (EDV) mean blood velocity (MBV), pulsatility index (PI) and resistive index (RI). After logistic regression for adjustment for the significant confounders, there was statistically significant difference in Doppler parameters between both groups including decrease in each of PSV, EDV and MBV while both PI and RI weren’t statistically significant. Among BAD patients, there was statistically significant difference in all TCD parameters between stroke and non-stroke patients (PSV EDV, MBV, PI and RI). BAD was associated with a decrease in flow velocities as measured by TCD. Furthermore, among BAD patients, those with stroke had lower values for all Doppler parameters than non-stroke patients.

scholarly journals The association of male infertility with telomere length: A case control study

2021 ◽  
Vol 8 (4) ◽  
pp. 325-332
Author(s):  
Kate Deepali Rajesh ◽  
Puranam Vatsalaswamy ◽  
Manvikar Purshotam Rao
Keyword(s):  
Male Infertility ◽  
Telomere Length ◽  
Real Time ◽  
Real Time Pcr ◽  
Case Control Study ◽  
Case Control ◽  
Control Group ◽  
Significant Difference ◽  
Control Study ◽  
Sperm Telomere Length

To study the relevance of sperm telomere length and infertility in men. : Our case-control study included twenty-five males in couple with sub-fertility/infertility (test group) and twenty five healthy males (control group) with proven paternity in the age group 25 to 35 years. The Absolute Sperm Telomere length (aSTL) was measured by real-time PCR. We investigated whether any significant difference in the aSTL value existed between the groups and analysed the relationship between aSTL and other sperm parameters.The mean (SE) aSTL recorded in the infertile cases was significantly shorter than for the control group being 140.60 (6.66) Kb/genome and 239.63 (12.32) Kb/genome respectively (p <0.001) A weak correlation was eminent between aSTL kb/genome and the total sperm count mil/ml (rho= 0.04, p - 0.86), progressive sperm motility (rho= - 0.02, p=0.934) and sperm viability (rho= - 0.07 p=0.741) in the infertile group. The measurement of aSTL by real-time PCR is a simple and rapid method that offers further paramount information with respective to the quality of sperm. It is befitted for epidemiological studies, hence opening new perspectives in the evaluation of male infertility. Limitations - Our study was confined to men aged between 25 and 35 years. Further comparative studies are needed to explore the significance of STL and infertility in older males. Additional studies will help illumine the significance of aSTL as a prognostic biomarker in assisted reproduction.

scholarly journals The Relationship between Serum Levels of Vitamin C, Uric Acid and Antioxidant Condition with Coronary Artery Diseases: a Case-Control Study

2019 ◽  
Author(s):  
Aida Torkzaban ◽  
Seyed Amir Mansour Alavi Naeini ◽  
Akbar Hassanzadeh ◽  
Mehrdad Namdari
Keyword(s):  
Uric Acid ◽  
Vitamin C ◽  
Case Control Study ◽  
Demographic Data ◽  
Systolic Pressure ◽  
Case Control ◽  
Control Group ◽  
Case Group ◽  
Significant Difference ◽  
Control Study

Abstract Background Coronary hearth diseases are among the main causes of death in adults. Increase of oxidative stress and defects in antioxidant defense play a major role in endothelium performance and are an effective factor in progress of atherosclerosis. Some studies have also reported different malondialdehyde and total antioxidant capacity among the atherosclerosis patients.Methods In this case-control study, 44 atherosclerosis patients referring to Shahid Madani treatment-education center were considered as the case group; while 44 healthy peoples were placed in the control group. Demographic data and anthropometric indices were measured. Food frequency questionnaire and international physical activity questionnaires were also completed. After 12 hours of fasting, 10 ml blood was sampled from the participants. Uric acid, vitamin C, TAC and MDA were also measured. The data were finally analyzed by SPSS Ver 22 software.Results A significant difference was observed between the two groups in terms of uric acid (P<0.001) and vitamin C (P<0.03). However, mean MDA and TAC showed no significant difference between the two groups. The two groups’ difference in terms of vitamin A, E and beta carotene, zinc and selenium intake was not significant. A significant difference was however detected between the two groups in terms of vitamin C (P<0.047). A significant relationship was also observed between the systolic pressure and CHD (P<0.028).Conclusion Results of this study indicated that the uric acid and vitamin C levels of atherosclerosis patients had significant increase and decrease in comparison with the healthy subjects, respectively. Mean TAC and antioxidant levels of their diets (except for vitamin C) showed no significant difference. Systolic blood pressure of the patients was significantly higher than the controls.

scholarly journals Interaction between serum FGF-23 and PTH in renal phosphate excretion, a case-control study in hypoparathyroid patients

2019 ◽  
Author(s):  
Forough Saki ◽  
Seyed Reza Kassaee ◽  
Azita Salehifar Salehifar ◽  
gholamhossein Ranjbar omrani
Keyword(s):  
Parathyroid Hormone ◽  
Serum Calcium ◽  
Case Control Study ◽  
Fractional Excretion ◽  
Case Control ◽  
Control Group ◽  
Phosphate Excretion ◽  
Significant Difference ◽  
Fgf 23 ◽  
Control Study

Abstract Background:phosphate homeostasis is mediated through complex counter regulatory feed-back balance between parathyroid hormone, FGF-23 and 1,25(OH)2D. Both parathyroid hormone and FGF-23 regulate proximal tubular phosphate excretion through signaling on sodium- phosphate cotransporters II a and II c . However, the interaction between these hormones on phosphate excretion is not clearly understood. We performed the present study to evaluate whether the existence of sufficient parathyroid hormone is necessary for full phosphaturic function of FGF-23 or not. Methods:In this case-control study, 19 patients with hypoparathyroidism and their age- and gender-matched normal population were enrolled. Serum calcium, phosphate, alkaline phosphatase,parathyroid hormone, FGF-23, 25(OH)D, 1,25(OH)2D and Fractional excretion of phosphorous were assessed and compared between the two groups, using SPSS software. Results:The mean serum calcium and parathyroid hormone level was significantly lower in hypoparathyroid patients in comparison with the control group(P<0.001 and P<0.001, respectively). We found high serum level of phosphate and FGF-23 in hypoparathyroid patients compared to the control group (P<0.001 and P<0.001,respectively). However, there was no significant difference in Fractional excretion of phosphorous or 1,25OH2D level between the two groups. There was a positive correlation between serum FGF-23 and Fractional excretion of phosphorous just in the normal individuals (P <0.001, r = 0.79). Conclusions:Although the FGF-23 is a main regulator of urinary phosphate excretion but the existence of sufficient parathyroid hormone is necessary for the full phosphaturic effect of FGF-23.

Is There a Relationship between Patellofemoral Alignment and Osgood–Schlatter Disease? A Case-Control Study

2018 ◽  
Vol 33 (01) ◽  
pp. 067-072 ◽  
Author(s):  
Fırat Seyfettinoğlu ◽  
Özkan Köse ◽  
Hasan Ulaş Oğur ◽  
Ümit Tuhanioğlu ◽  
Hakan Çiçek ◽  
...  
Keyword(s):  
Case Control Study ◽  
Case Control ◽  
Radiographic Examination ◽  
Control Group ◽  
Etiologic Factor ◽  
Full Extension ◽  
Significant Difference ◽  
Patellofemoral Alignment ◽  
The Difference ◽  
Control Study

AbstractThis study was aimed to investigate the role of anatomic variations in patellofemoral alignment in patients with or without Osgood-Schlatter disease (OSD) and to determine the potential anatomic risk factors that may play role in the etiology. This prospective observational case-control study was conducted on two groups of adolescent patients. Group 1 comprised patients who were diagnosed as having OSD and group 2 consisted of an equal number of age-matched patients who presented to the outpatient clinic with traumatic knee injury and underwent knee radiographic examination but without a diagnosis of OSD. Age, height, weight, body mass index (BMI), dominant side, and level of sporting activity were recorded. Quadriceps (Q) angles were measured using a long-arm goniometer with patients lying in the supine position with their knees in full extension and contracting the Q muscles. On anteroposterior, lateral knee, and tangential patella (Merchant and Laurin views) radiographs, the following measurements were performed: Insall–Salvati (IS), Caton–Deschamps (CD), and Blackburne–Peel (BP) indexes, congruence angles, lateral patellofemoral angles, sulcus angles, and patella type according to Grelsamer's morphology classification. Both groups were similar in respect of age (p = 0.160), sex (p = 0.311), height (p = 0.326), weight (p = 0.596), BMI (p = 0.153), and dominancy (p = 0.500). The rate of patients engaged in sports activities was significantly greater in the OSD group (p = 0.003). No significant difference was determined between the groups in respect to IS index, CD index, BP index, sulcus angle, lateral patellofemoral angle, and congruence angle (p–values: 0.358, 0.995, 0.912, 0.802, 1.000, and 0.907, respectively). The mean Q angle was measured as 15.6 ± 2.2 degrees in the OSD group and 14.3 ± 2.5 degrees in the control group (p = 0.014). Despite the difference being statistically significant, it was clinically insignificant because the difference was only 1.3 degrees. The principle etiologic factor seems to be increased physical activity rather than subtle variations is patellofemoral anatomy and alignment of extensor mechanism.

scholarly journals Peri-implantitis and extracellular matrix antibodies: A case–control study

2017 ◽  
Vol 11 (03) ◽  
pp. 340-344 ◽  
Author(s):  
Piero Papi ◽  
Stefano Di Carlo ◽  
Daniele Rosella ◽  
Francesca De Angelis ◽  
Mario Capogreco ◽  
...  
Keyword(s):  
Extracellular Matrix ◽  
Case Control Study ◽  
Test Group ◽  
Case Control ◽  
Enzyme Linked Immunosorbent Assay ◽  
Control Group ◽  
Fisher Exact Test ◽  
Type I ◽  
Significant Difference ◽  
Control Study

ABSTRACT Objective: The aim of this case–control study was to compare patients with a healthy peri-implant environment and patients affected by peri-implantitis, evaluating the occurrence of antibodies to extracellular matrix (ECM) molecules. The authors hypothesized the presence of ECM autoantibodies in serum of peri-implantitis patients. Materials and Methods: Patients were divided into two groups: one with dental implants with a diagnosis of peri-implantitis and one control group with implants classified as being “healthy.” Enzyme-linked immunosorbent assay was performed on patients' sera to detect human antibodies to type I, III, IV, and V collagens, laminin, and fibronectin. Fisher exact test was performed to evaluate statistical association, with a significant P < 0.05. Results: Forty-two patients were enrolled in this study, 27 females (64.28%) and 15 males (35.72%) with a mean age of 53 ± 29.69 years (age range 32–74). The presence of antibodies to CIII was recorded in 6/21 (28.57%) patients of test group, compared to just 2/21 (9.52%) for the control group, showing a statistically significant difference (P < 0.05). Other antibodies tested were found to be not statistically significant or absent. Conclusions: Within the limitations of this study, it can be concluded that further studies, with larger sample and different design, are necessary to address the research purpose, evaluating possible associations between anti-ECM antibodies and peri-implantitis.

scholarly journals The Role of Toxoplasma gondii Infection Among Multiple Sclerosis Patient Compared to Ordinary People in South of Iran: A Case-Control Study

2020 ◽  
Vol 17 (3) ◽  
Author(s):  
Mahsa Rahnama ◽  
Qasem Asgari ◽  
Peiman Petramfar ◽  
Davod Tasa ◽  
Vahid Hemati ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Toxoplasma Gondii ◽  
Case Control Study ◽  
Case Control ◽  
Control Group ◽  
Ordinary People ◽  
Serum Samples ◽  
Significant Difference ◽  
Control Study

Background: Toxoplasmosis is a common parasitic disease, which leads to serious disease symptoms in immunocompromised hosts and infants. Recent epidemiologic surveys showed that microbial agents may be associated with some cases of multiple sclerosis (MS). Objectives: This case-control study aimed to examine the role of Toxoplasma gondii in MS by evaluating sero-frequency of anti-T. gondii IgG (ATXAb) antibody between patients with MS and ordinary people in Shiraz Province, south of Iran during 2016 - 2018. Methods: Serum samples obtained from MS patients (n = 130), and a group of age and gender-matched controls (n = 130) with the same socioeconomic status with the patients’ group were collected to evaluate the prevalence of T. gondii IgG antibodies (ATXAb). Moreover, the presence of the ATXAb antibody of the patients and controls was determined by the ELISA test. SPSS 20 software was used to perform the statistical analysis (SPSS, inc., Chicago, USA). Results: Out of 130 (35.4%) cases with MS and 130 (13.8%) controls, 46 and 18 subjects were seropositive for ATXAb, respectively. Based on the chi-square test, a significant difference was observed in terms of the positivity rates of ATXAb between the MS patient group and the control group (P = 0.001). The mean ± standard deviation ATXAb levels in controls and MS patients were found to be 61 ± 34 and 114 ± 47 IU/mL, respectively. Also, there were statistically significant differences between the levels of these two groups (P = 0.001). Conclusions: Given the relationship between toxoplasmosis and MS, it is possible that the prevalence of MS decreases by increasing hygiene and preventing toxoplasmosis.

scholarly journals Association of M55L and Q192R polymorphisms of paraoxonase 1 gene (PON1) with recurrent pregnancy loss risk: A case–control study

2021 ◽  
Author(s):  
Mehdi Alizadeh ◽  
Mahboobeh Nasiri ◽  
Morteza Samadi ◽  
Nasrin Ghasemi ◽  
Ali Moradi
Keyword(s):  
Statistical Analysis ◽  
Pregnancy Loss ◽  
Recurrent Pregnancy Loss ◽  
Case Control Study ◽  
Case Control ◽  
Paraoxonase 1 ◽  
Control Group ◽  
Case Group ◽  
Significant Difference ◽  
Control Study

Background: Recurrent pregnancy loss (RPL) refers to the incidence of two or more abortions before the first half of pregnancy. Oxidative stress has been hypothesized to play a central role in RPL. Objective: To investigate the relationship between Q192R and L55M polymorphisms of PON1 as antioxidant enzyme and the risk of RPL. Materials and Methods: In this case–control study, 110 women with RPL (case) and 110 healthy fertile women (control) referred to the Research and Clinical Center for Infertility, Shiraz, Iran were enrolled. Genomic DNA was extracted from the peripheral blood in all participants. Polymorphisms were genotyped by polymerase chain reaction-restriction fragment length polymorphism method. Results: Statistical analysis of Q192R polymorphism showed a significant difference for the RR genotype between the case and control group (OR = 11, CI = 1.39–86.87, p = 0.005) but none for the QR and QQ genotypes. No significant association was observed between the R and Q allelic frequency in the RPL participants compared to the control group (p = 0.53). Also, statistical analysis of the L55M polymorphism for MM genotype in the case group compared with the control group showed a significant difference (OR = 3.59, CI = 0.97–13.30, p = 0.042), but none for the LM and LL genotypes. Conclusion: The findings showed a significant correlation between the Q192R polymorphisms and the L55M PON1 enzyme and RPL in this study population. Key words: Pregnancy, Abortion, PON1, Polymorphism, Recurrent pregnancy loss.

Quality of Life in Children with Migraine: A Case–Control Study

2020 ◽  
Author(s):  
Saeid Sadeghian ◽  
Aliakbar Momen ◽  
Gholamreza Jelodar ◽  
Shahram Nasiri ◽  
Azin Khalafinia ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Case Control Study ◽  
Negative Impact ◽  
Case Control ◽  
Control Group ◽  
P Value ◽  
Quality Of Life Inventory ◽  
Significant Difference ◽  
Control Study

AbstractWe conducted a case–control study to determine the effects of migraine on quality of life (QOL) in children. Participants, aged between 6 and 18 years, were assigned to migraine (n = 70) and control (n = 70) groups. We used a translated version of Pediatric Quality of Life Inventory 4.0 questionnaire. From the children's perspective, the overall QOL scores in all domains were lower in children with migraine. Children in the migraine group had significant lower scores in the social, emotional, and physical functioning (p-value < 0.05) than control group. Interestingly, a significant difference in the educational performance was not seen (p-value = 0.101). Relative to the parents' responses and children, the overall scores in all domains were lower in children with migraine. Statistically significant lower scores were found only in emotional and physical domains (p-value < 0.05). The results of this study indicate that migraine imposes a substantial negative impact on the different aspects of QOL in children.

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