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Biomedical subjects

Hüseyin Caksen

Publications and source records attributed to Hüseyin Caksen.

At least 19 recordsLinked to original sources

Oxidant and non-enzymatic antioxidant status in measles.

Measles is a highly contagious viral disease of childhood associated with serious complications and significant morbidity and mortality. In the present study, antioxidant and oxidant status was investigated in children with measles. Our aim was to evaluate the possible changes in non-enzymatic antioxidant levels and their relationship to the oxidative stress in measles. According to our knowledge, there are no data about the blood levels of malondialdehyde (MDA), reduced glutathione (GSH) and vitamin C in measles. We measured the whole blood MDA (as a marker of lipid peroxidation) and GSH, and serum beta-carotene, retinol, alpha-tocopherol and ascorbic acid levels in all subjects. There was a statistically significant difference between the groups for all parameters (p < 0.05). Non-enzymatic antioxidant status was found to be decreased but, lipid peroxidation was increased in the study group. As a conclusion, these findings suggested that oxidant and antioxidant defence system were altered in children with measles.

Antioxidants↗

Comparison of epileptic and nonepileptic cases with centrotemporal spikes in view of clinical findings and electroencephalographic characteristics.

The morphological features of centrotemporal spike discharges (CTSD) and relationship of them with clinical diagnosis in cases with benign epilepsy of childhood with centrotemporal spikes (BECTS) and the other epileptic syndromes of childhood as well as some nonconvulsive neurological disorders were detected in the routine patient population who referred to the authors' EEG laboratory. Thirty-six cases (21 males, 15 females; 8 months-14 years old), in which awake and/or sleep EEGs revealed CTSD were included in this study. The cases were divided into two groups as epileptic and nonepileptic. The cases with seizure were divided into BECTS and the other epilepsies. Of the epileptic cases, 14 (38.8%) patients had typical rolandic seizures. In five cases, there were partial or secondary generalized seizures. Two cases had myoclonic seizures. In the nonepileptic group, there was mental retardation/behavioral disturbances in five cases; there were periodic syndromes of childhood such as migraine and equivalents of migraine in three cases; febrile convulsion in three cases, breath-holding spells in two cases, and primary enuresis nocturna in two cases. In the nonepileptic group, the discharges were significantly fewer than the other groups (p = .014). More frequent discharges occuring for shorter periods were more significantly observed in BECTS group (64%). Typically isolated spike and slow-waves in T3/T4 and C3/C4 location were significantly more common (86%) in rolandic epilepsy group (p = .01). The EEGs of cases with BECTS had more frequency in the cluster of discharges than the other groups (p = .018). Multifocal discharges were observed in 28.5% of cases with BECTS, in 20% of nonepileptic group, and in 71.4% of other epileptics in the trial. Although these epileptic and nonepileptic conditions have some differences in view of frequency and morphology and location, CTSDs could be manifested in the group without seizure. It was concluded that the similar focal abnormalities which could be seen in rolandic epilepsy may be observed in the other epileptic or nonepileptic disorders of childhood and this condition may be originated from the involvement of similar central structures.

Adolescent↗

Acute amitriptyline intoxication: an analysis of 44 children.

The tricyclic antidepressant agents, particularly amitriptyline and dothiepin, are recognized for their potentially lethal cardiovascular and neurological effects in poisoned patients. In this article, the clinical and laboratory findings of 44 children with amitriptyline intoxication are reviewed. Our purpose was to investigate amitriptyline intoxication in childhood. Of 44 patients, 21 (47.7%) were boys, 23 (52.3%) were girls, and the ages ranged from 12 months to 14 years (mean +/- SD; 4.09 +/- 2.9 years). All children except one who took an overdose of amitriptyline to decrease his pain accidentally ingested an overdose of amitriptyline. The amount of amitriptyline ingested was between 2 mg/kg and 97.5 mg/kg (mean +/- SD; 13.6 +/- 17.7 mg/kg per dose) (the drug dosage was not known in 13 children). The most commonly observed clinical and laboratory findings were lethargy, tachycardia, convulsion, hyperglycemia and leukocytosis. In all patients except for two children who died the abnormal clinical and laboratory findings returned to normal within a few days after admission and they were discharged from the hospital in good health within the fourth day of admission. One of the children ingested 97.5 mg/kg amitriptyline and probably died due to status epilepticus and another child who died ingested 36 mg/ kg amitriptyline and died due to cardiopulmonary arrest. In conclusion, our findings showed that initial symptoms and signs of acute amitriptyline intoxication appeared severe, but they disappeared with only supportive care required in most children except for cases that ingested high doses of drug within a few days. In contrast to adults, we infrequently noted respiratory insufficiency, arrhythmia and hypotension in children with acute amitriptyline intoxication.

Adolescent↗

Bilateral brachial plexopathy complicating Henoch-Schönlein purpura.

An 11-year-old boy presented with convulsion, fever, rash, abdominal pain, swelling on the eyelids, elbow and wrists, oliguria and hematuria. Based on the abnormal findings the patient was diagnosed with Henoch-Schönlein purpura. On the 3rd day of admission, neurological examination showed ataxic gait, loss of deep tendon reflexes, and decreased (4/5) of muscle strength on all extremities. Additionally, bilateral loss of touch, pain and temperature sensation in a glove, from the elbows to distal region (on C5-T1 level) was diagnosed. Cerebrospinal fluid examination and cranial magnetic resonance imaging (MRI) were normal. The patient was discharged with oral prednisolone on the 7th day of admission. One week after discharging from the hospital, he was re-admitted with vertigo and seizures. He was in coma. MRI of cranial, cervical and cervical plexus were normal. Electromyography showed severe bilateral brachial plexopathy. Prednisolone and intravenous immunglobulin (IVIG) therapy were given without significant improvement. He was discharged from the hospital on the 17th day of admission. On the second month of follow-up, a second cure of IVIG was given because of no clinical improvement. Now, he is on the 4th month of follow-up, unfortunately, no improvement was noted on his muscle strength and sensorial abnormalities on the upper extremities.

Brachial Plexus Neuropathies↗

The importance of rigid nasal endoscopy in the diagnosis and treatment of rhinolithiasis.

OBJECTIVES: Rhinolithiasis is the presence of mineralized and calcareous formations located in the nasal cavity. They have rare occurrence and can be easily confused with infection or obstruction of upper airways. If they are undetected for a long time, they may grow large enough to cause of nasal obstruction, mimicking sinusitis. Seven cases of rhinolithiasis were presented, and their diagnosis was made by rigid endoscopic nasal examination. Also computerized tomography scan was used to describe the size and site of the rhinoliths accurately. Our purpose was to determine the role of rigid nasal endoscopy in the diagnosis and the treatment of rhinolithiasis. METHODS: In this study, seven cases of rhinolithiasis, who were diagnosed and treated by rigid nasal endoscopy were presented. RESULTS: Between January 2000 and November 2004, seven cases (four males and three females; age ranged from 8 to 45 years) with rhinolithiasis were diagnosed. The most frequent symptoms were nasal obstruction with purulent rhinorhea, nasal and oral malodor. As complementary examinations, computerized tomography and simple X-ray of paranasal sinuses were used to locate and measure the dimension of calcareous mass, and to reveal possible invasion of the adjacent structures. The removal of rhinolithiasis was done with rigid nasal endoscopy under topical anesthesia in six cases and general anesthesia in one case. CONCLUSION: Rhinolithiasis is a rare condition but must always be suspected in patients with long standing nasal obstruction, nasal and oral malodor, purulent rhinorrhea and chronic headache.

Adolescent↗

Oxidant and antioxidant levels in children with acute otitis media and tonsillitis: a comparative study.

OBJECTIVE: Recurrent episodes of acute otitis media (AOM) and acute tonsillitis (AT) are a common problem in infectious disorders during childhood and are major cause of morbidity in children. The organism maintains defense systems including nonenzymatic antioxidants such as Vitamins A, E and C and reduced glutathione (GSH) against reactive oxygen species (ROS). In the present study, lipid peroxidation status and nonenzymatic antioxidant capacity were investigated in children with AOM and AT. Our aim was to compare the lipid peroxidation and responses of the body's antioxidant status in the closely associated infections such as AOM and acute tonsillitis. METHODS: The study included 23 (14 males, 9 females) children with AOM, 27 (14 males, 13 females) with AT and 29 (16 males, 13 females) healthy control subjects. The ages of the study and control subjects were between 2 and 7 years. Serum beta-carotene, retinol, Vitamin E, Vitamin C, and whole blood malondialdehyde (MDA) (as an indicator of lipid peroxidation) and GSH levels were studied in all subjects. RESULTS: There was a statistically significant difference between the groups for all parameters (P<0.05). All of the antioxidant vitamins such as beta-carotene, retinol, Vitamin E, and Vitamin C levels were observed to be significantly decreased in the both patient groups. Nevertheless, GSH levels were also decreased in the patient groups. MDA levels were found to be higher in children with AOM and AT than in the healthy control subjects. When compared the AOM and AT groups, there was statistically significant difference between the groups for whole blood MDA (P<0.05). CONCLUSION: Even though they seem to react in a similar way against ROS, in the cases of AOM and AT, it is possible to see the different approaches in these tissues for the oxidative stress.

Acute Disease↗

Auditory brainstem potentials in children with protein energy malnutrition.

OBJECTIVE: In this study, auditory brainstem potentials (ABPs) were studied in children with protein energy malnutrition (PEM) to determine the effects of PEM on the developing brain in children. METHODS: A total of 31 children, aged 3-36 months with moderate/severe PEM and 25 healthy children, aged 3-48 months were included in the study. Nutritional status of the children was assessed by the Gomez classification. Recordings of ABPs were performed by using Nihon Kohden Neuropack 2 device. RESULTS: Of 31 children, 22 (71%) had severe malnutrition, 9 (29%) had moderate malnutrition. Additionally, 8 (26%) and 9 (29%) children had iron deficiency anemia and hypoalbuminemi, respectively. There were significant differences in the mean latencies of the waves I-V on the right and left ears and in the mean interpeak latencies (IPLs) of the waves III-V and I-V on the right ear between the study and control groups (P<0.05). The mean IPLs of I-V on the left side were found to be longer in the moderate PEM group than those of severe PEM group (P<0.05). There was not any difference between the groups of PEM with low serum albumin and PEM with normal serum albumin. While the mean IPLs of I-III on the right side were found longer in the cases of PEM without iron deficiency anemia, the mean latency of wave I on the left side, and the mean IPLs of III-V on the right side were longer in the children with PEM plus iron deficiency anemia (P<0.05). CONCLUSIONS: Our findings showed that children with moderate/severe PEM had ABPs abnormalities in different degrees, which reflect defects in myelination of auditory brainstem pathways in children with moderate/severe PEM. However, we found contradictory results between abnormalities in ABPs and degree of malnutrition and iron deficiency anemia. We think that more extensive studies should be performed to determine whether or not there was a relationship between these parameters.

Anemia, Iron-Deficiency↗

Incidence of nocturnal enuresis and nocturia in children with tuberculosis.

Nocturnal enuresis is a common problem and occurs in 15 to 20 percent of 5-year-old children. The etiology of nocturnal enuresis remains unknown and is probably multifactorial. In this study 52 children aged between 6-17 years with tuberculosis were questioned for nocturia and nocturnal enuresis, retrospectively. Nocturnal, enuresis was found in 12 (23%) and nocturia in 22 (42%) of the children, respectively. After specific treatment with antituberculosis drugs nocturnal enuresis and nocturia were improved in 5 and 21 children, respectively. However, it could not be explained why these disorders were much higher in children with tuberculosis than healthy children. The findings suggest that nocturnal enuresis and nocturia may be in a high frequency in children with tuberculosis; however, the authors think that prospective and more extensive studies should be performed to clarify these preliminary findings.

Adolescent↗

Cranial MRI findings in children with protein energy malnutrition.

In this study, cranial magnetic resonance imaging (MRI) findings were investigated in children with moderate and severe protein energy malnutrition (PEM) to determine cerebral abnormalities in malnutrition in childhood. A total of 20 children aged 3 months to 36 months were included in the study. Thirteen (65%) children had severe malnutrition and seven (35%) children had moderate malnutrition. Fifteen (75%) children had abnormal MRI findings: all of them had cerebral atrophy, and 10 (75%) children had cerebral atrophy plus ventricular dilatation. None of the children had abnormality in the brain stem or cerebellum. The authors did not find statistically significant differences between the groups when comparing the MRI findings for degree of malnutrition, head circumference, iron deficiency anemia, and serum albumin levels. In conclusion, the findings showed that most (75%) children with moderate/severe PEM had abnormal MRI findings. Therefore, it is suggested that children with PEM should be evaluated for cerebral atrophy.

Adolescent↗

Evaluation of exercise performance in healthy Turkish adolescents.

In this study, exercise performance was evaluated in 259 healthy adolescents by using some tests. The purpose of the study was to investigate exercise performance and cardiorespiratory capacity in both adolescent boys and girls. The following tests were applied to all children: ball throw with right and left hands, vertical jump, long jump without prior motion, pull up (repetition number), flexibility, and agility (set repetition number) tests. Additionally, heart rate and systolic and diastolic blood pressures were measured. Applied spirometric tests were as follows: vital capacity, forced vital capacity, forced expiration volume in the first second, ventilation volume, maximum volunteer ventilation and respiration frequency. This study found that heart rate was statistically significantly higher in females than males (p < .05). There was also a statistically significant difference in vital capacity, forced vital capacity and forced expiratory volume in the first second (in both measured and predicted values) between males and females (p < .05). Additionally, it was found that there were statistically significant differences in the 60 and 200 meters races, maximal pull up, maximal sit up, vertical jump, standing long jump, ball throwing with right hand, horizontal bar, and agility between the male and female groups (p < .05). In conclusion, the findings showed that although females were superior in the 60 and 200 meter race, males were superior in agility, horizontal bar, ball throwing with right hand, long jump, and vertical jump.

Adolescent↗

Effects of high-dose methylprednisolone therapy on coagulation factors in patients with acute immune thrombocytopenic purpura.

Autoimmune thrombocytopenic purpura (ITP) is a disease that presents with skin and mucous membrane bleeding due to thrombocytopenia. In the literature, there are a few studies about the effect of high-dose steroid therapy on coagulation tests in different diseases, but their results are still controversial. In this study, coagulation parameters were investigated that might have a role in hemostatic compensation in childhood acute ITP before and after high-dose methylprednisolone (HDMP) treatment. The study includes 21 children age 1.5 to 14 years with acute ITP and 21 healthy age-matched control subjects. All patients with acute ITP received HDMP for 7 days. Before and after HDMP treatment (0 and 8 days) prothrombin time, partial thromboplastin time, fibrinogen, Protein C, Protein S, antithrombin III, and the levels of factor II (FII), FV, FVII, FVIII, FIX, FX, FXI, and FXII were studied in all subjects. The results were compared with those of the control group. Pre-treatment Protein C and Protein S levels in the patient group were significantly lower than those in the control groups (p<0.05). Protein S and Protein C levels were significantly improved after HDMP treatment in patient group. There were lower FV, FVII, FX values in the patient group compared to the control groups on admission. There was no difference in AT III and fibrinogen levels before and after treatment. As a result, some changes in the coagulation system associated with thrombocytopenia were observed in patients with acute ITP. These changes may be accepted as compensatory mechanisms to maintain hemostasis.

Acute Disease↗

Anti-oxidant activity in measles.

BACKGROUND: Measles leads to serious complications, especially in developing countries. AIM: Our aim was to evaluate the effect of oxidative stress on the enzymatic and non-enzymatic anti-oxidant status in children with measles. METHODS: Levels of superoxide dismutase, glutathione peroxidase, catalase, ceruloplasmin, albumin, total bilirubin and uric acid were studied in 17 children with measles and 29 healthy controls. RESULTS AND CONCLUSIONS: There was a statistically significant difference between the groups for all parameters. All of the anti-oxidant activities except for albumin level were increased in the study group. Both enzymatic and nonenzymatic anti-oxidant defence systems were affected in measles.

Antioxidants↗

Relationship between plasma leptin, insulin and tumor necrosis factor alpha in obese children.

OBJECTIVES: 1. To evaluate the relationship between plasma leptin and TNFalpha concentrations in obese children and to assess the differences between hyperinsulinemic and normoinsulinemic groups. 2. To evaluate the relationship between plasma leptin and insulin levels in obese children. 3. To investigate the TNFalpha G308A mutation in obese children. METHODS: Body mass index (BMI), fasting plasma glucose and insulin levels, oral glucose tolerance test results, homeostasis model assessment of insulin resistance (HOMA-IR) results, and plasma leptin and TNFalpha concentrations were evaluated in obese children (n = 45) and age- and gender-matched, lean healthy controls (n = 40). RESULTS: In obese children the fasting insulin, HOMA-IR results, plasma leptin and TNFalpha concentrations were significantly higher than in controls (p <0.05). Furthermore, obese females showed higher plasma leptin and insulin resistance compared to obese males. While plasma leptin, TNFalpha levels and HOMA-IR results were similar in the prepubertal and pubertal groups, insulin levels were significantly higher in the pubertal group. Plasma leptin and TNFalpha concentrations were similar in hyperinsulinemic and normoinsulinemic obese children. In control children, plasma leptin concentrations showed a positive correlation with BMI, age, fasting insulin and HOMA-IR results. In obese children, plasma leptin levels did not correlate with BMI, fasting insulin or TNFalpha. CONCLUSION: Plasma leptin concentrations did not show any correlation with TNFalpha levels in obese children. Furthermore, plasma leptin and TNFalpha concentrations were similar in hyperinsulinemic and normoinsulinemic obese children.

Blood Glucose↗

Pediatric intraoral ranulas: an analysis of nine cases.

An intraoral ranula is a retention cyst arises from the sublingual gland on the floor of the mouth as a result of ductal obstruction and fluid retention. Many techniques for management of ranulas have been described in the literature. The purpose of this study was to analyze our surgically treated pediatric patients with intraoral ranulas and to discuss the results in the light of the literature. Nine pediatric patients (six females and three males) with intraoral ranulas surgically treated were analyzed retrospectively regarding their treatment methods and results. The surgical specimens were also re-examined histologically. Seven cases of superficial, protruded and smaller than 2 cm ranulas were treated with marsupialization (unroofing). Two cases who were previously operated and then recurred had bigger than 2 cm ranulas. In these two cases, marsupialization of the ranula plus removal of the sublingual gland was performed. The most common complication was intraoperative cyst rupture of the ranula, which was noted in four cases. A recurrence was observed in only one case in the 16th months of follow up period. Our findings show that marsupialization is a suitable and effective method for pediatric intraoral ranulas, whereas in recurrent cases marsupialization of the ranula combined with total excision of sublingual gland may be preferred.

Adolescent↗

Aural myiasis in children and literature review.

Myiasis is a disease caused by fly larvae. The term "myiasis" is derived from the Greek word "myia" meaning fly. Aural myiasis is a rare clinical state and occurs frequently in children. In this article, six children with aural myiasis, caused by the fly larvae, are reported because of unusual presentation. All of the children with aural myiasis were associated with chronic otitis media. In the treatment, a combination of suctioning and alligator forceps was used to remove maggots under the light microscopic field. Additionally, antibiotics were used in all children. Thus, aural myiasis is successfully treated by direct extraction of larvae and application of preventative methods.

Animals↗