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Biomedical subjects

Orhan Babucçu

Publications and source records attributed to Orhan Babucçu.

10 recordsLinked to original sources
PubMed2006

An ameliorated skin flap model in rats for experimental research.

There is a disagreement in the experimental design of random skin flaps owing to their vascular inconsistency. The definition of a reliable axial-pattern skin flap model is needed. The purpose of this study was to describe a new skin flap model to deal with entire drawbacks of existing random and axial pattern skin flap designs. This was accomplished by creating paired skin flaps including both skin and vascular pedicle on the dorsum of the same rat. This design was suitably termed as rando-axial flap. The present study offers a simple and reliable skin flap model with following advantages: (1) it has a predictable necrosis area, (2) it reveals a larger survival area (75 +/- 5%) when compared to other flaps in this study (Mann-Whitney U-test, p<0.001), (3) the vascular pedicle is consistent, (4) control and study flaps are placed on the same animal (5) it can be converted to a random, an axial or a free flap.

Animals↗
PubMed2004

The effect of CAPE on lipid peroxidation and nitric oxide levels in the plasma of rats following thermal injury.

Both experimental and clinical studies have shown that oxygen-derived free radicals rise in the plasma after thermal injury and participate in the pathogenesis of tissue damage. Hence, various antioxidant molecules have been used in treatment of burn injury both experimentally and clinically. Caffeic acid phenethyl ester (CAPE), an active component of propolis from honeybee hives, is known to have potent antioxidant property. The purpose of the present study was to investigate the effects of CAPE on oxidative stress in plasma of burned rats. Experiment was designed in three groups of rats with 20% full-thickness burn: (a) sham burn (n = 7); (b) burn only (n = 22); (c) burn + treatment with CAPE (n = 22). Plasma levels of malondialdehyde (MDA), nitric oxide (NO) and the activities of xanthine oxidase (XO), and superoxide dismutase (SOD) were used as both bio-indicators of oxidant status and determinant of antioxidant effect of CAPE. They were assessed by biochemical methods at 1st, 3rd, 7th, and 14th post-burn days. In conclusion, CAPE was shown to possess antioxidant activity by saving SOD activity, preventing XO activity and decreasing the levels of MDA, and NO. Our study showed that CAPE may be beneficial in burn injury.

Animals↗
PubMed2003

Fascia lata grafts for closure of secondary urethral fistulas.

OBJECTIVES: To evaluate the efficacy of fascia lata graft in the repair of secondary urethral fistulas. Urethral fistulas may result from a complication of hypospadias repair. The treatment of urethral fistulas is quite challenging. METHODS: This technique was used in 8 patients between 2000 and 2002. All patients had undergone hypospadias repair and had recurrent fistula formation. A 2 x 2-cm fascia lata graft was harvested from the lateral aspect of the thigh. After repair of the fistula, the fascia lata graft was placed between the urethra and skin. The mean age of the patients was 8 years (range 5 to 13). RESULTS: During 8 to 22 months (average 11) of follow-up, no recurrence of urethral fistula was observed. No complications occurred, and patients were completely satisfied with the results. CONCLUSIONS: The results of this study show that the fascia lata graft can be used for the closure of urethral fistula secondary to hypospadias repair. Additional studies are warranted.

Adolescent↗
PubMed2003

A training model for cutaneous surgery.

BACKGROUND: Training models are necessary for development of many skills in medical education. OBJECTIVE: To develop a training model for improvement of simple surgical procedure skills. METHODS: A convex, rectangular, smooth-surfaced wooden plate covered by first cotton material and then polyethylene stretch film was used. Skins of rats that had been used previously for experimental studies were attached on the wooden plate. In order to see efficacy of our model, we decided to use it in a cutaneous surgery workshop. Theoretical and practical information about surgical sutures, punch biopsy, excisional biopsy, rotational flap, and Z-plasty procedures was given to the participant physicians. Surgical skills of participants were scored before and after the practical part of workshop. RESULTS: Thirty-three physicians were enrolled voluntarily to the workshop. All participants showed statistically significant increase in scores (P < 0.05). CONCLUSION: The similarity to human skin and the easy setup make this training model an ideal teaching tool to improve the skills of physicians for simple cutaneous surgery.

Animals↗
PubMed2003

Dual preconditioning: effects of pharmacological plus ischemic preconditioning on skin flap survival.

To enhance skin flap viability, pharmacological and ischemic preconditioning methods were investigated intensively. This study was designed to determine whether combined local dexamethasone administration and pedicle clamping would result in an additive enhancement of skin flap survival in the rat model. Twenty-eight male Sprague-Dawley rats were included in dexamethasone injection, clamping, clamping plus dexamethasone injection, and control groups. A rectangular random skin flap (3 x 11 cm) was outlined as bipedicled on the back of the animals. The dexamethasone or saline injection points in the flap were standardized. In the dexamethasone injection group, after raising the flaps, a total of 2.5 mg/kg dexamethasone was injected into the flaps. In the ischemic preconditioning group, 1 hour after saline injection, the cranial pedicle was clamped for 20 minutes and then 40 minutes reperfusion was performed. The clamping-plus-dexamethasone injection group was the same as the clamping group except dexamethasone was injected instead of the saline. In the control group, saline was injected instead of dexamethasone. Regardless of the group, all flaps were cut at the cranial side at the end of the 2 hours and were sutured back. On day 7, the surviving area was significantly greater in all experimental groups compared with the control group (p<0.05). Furthermore, the clamping-plus-dexamethasone group demonstrated the highest flap viability.

Animals↗
PubMed2003

Effect of steroids on edema, ecchymosis, and intraoperative bleeding in rhinoplasty.

A double-blind, randomized study was designed to determine the efficacy of dexamethasone in decreasing periorbital edema and ecchymosis after rhinoplasty. Sixty rhinoplasty patients undergoing hump resection and lateral osteotomy were included in the study and were divided into 6 groups: group 1 (n = 10), single dose of 8 mg intravenous (IV) dexamethasone 1 hour before the operation; group 2 (n = 10), single dose of 8 mg IV dexamethasone at the beginning of the operation; group 3 (n = 10), 3 doses of 8 mg IV dexamethasone 1 hour before the operation, and 24 and 48 hours after the operation; group 4 (n = 10), 3 doses of 8 mg IV dexamethasone at the beginning of the operation, and 24 and 48 hour after the operation; group 5 (n = 10), 3 doses of 8 mg IV dexamethasone immediately after the operation, and 24 and 48 hours after the operation; group 6 (n = 10), control, no dexamethasone administration before or after the operation. Intraoperative blood loss was recorded for each patient. Patients were evaluated at 24 hours and days 2, 5, 7, and 10. For the postoperative evaluation of periorbital ecchymosis and edema, a scale of 0 to 4 points was used. There was no significant difference between groups in terms of bleeding (P > 0.05). In the groups using steroid before osteotomy, edema and ecchymosis were significantly lower during the first 2 days compared with the control group (P < 0.05). No significant difference was seen between groups 1 and 2. When patients were evaluated on day 5, edema and ecchymosis were significantly lower in groups 3 and 4 (P < 0.05) compared with other groups, but there was no difference between them. Group 5 had a significantly higher level of edema and ecchymosis compared with groups 1 through 4 at 24 hours and at days 2, 5, and 7 (P > 0.05). There was no significant difference between groups on day 10. In conclusion, if the first dose is given before osteotomy, triple-dose steroid application is the best bet for decreasing postoperative edema and ecchymosis. None of the patients had any complications related to the use of dexamethasone.

Aged↗
PubMed2003

A case of lipoma of the deep lobe of the parotid gland.

Lipoma of the deep lobe of the parotid gland is extremely rare. A forty-two-year-old man presented with a painless, soft, and slow-growing mass in the left preauricular area. Ultrasonography and computed tomography findings were consistent with lipoma. The patient was treated with superficial parotidectomy and total excision of the mass with preservation of the facial nerve. Histologic findings confirmed the diagnosis. No recurrences were detected during 1.5 years in the postoperative period.

Adult↗