The Effect of Platelet-Rich Plasma on the Zone of Stasis and Apoptosis in an Experimental Burn Model.

BACKGROUND: The zone of stasis that forms in acute burn is initially viable, but coagulation progresses to necrosis in the process that follows. OBJECTIVE: This study investigates the effects of platelet-rich plasma (PRP) on apoptosis in the burn zone of stasis and on the viability of living tissue. METHODS: Burns were established in the right ears of 20 female New Zealand rabbits using the "comb burn" model. Platelet-rich plasma was obtained from blood collected from rabbits' ears (n = 10) and was injected subcutaneously into the zone of stasis (n = 10). The same amount of saline solution was injected into the zone of stasis of the control group rabbits (n = 10). Histological and immunohistochemical apoptosis analysis was performed to evaluate viable areas. RESULTS: Apoptosis levels were higher in the control group than in the experimental group. The area of viable tissue in the zone of stasis was greater than in the control group. Infection-induced neutrophil infiltration was statistically significantly lower in the experimental group. CONCLUSION: In this animal model, apoptosis count and viable tissue area measurement and the anti-inflammatory results in the burn area confirm that PRP therapy has a statistically significant positive impact on the survival of the zone of stasis and in acute burn injury.

HISTORIQUE: La zone de stase qui se forme après une brûlure aiguë est d'abord viable, mais la coagulation entraîne la nécrose dans le processus qui suit. OBJECTIF: La présente étude porte sur les effets du plasma riche en plaquettes (PRP) sur l'apoptose dans la zone de stase d'une brûlure et sur la viabilité des tissus vivants. MÉTHODOLOGIE: Les chercheurs ont établi les brûlures dans l'oreille droite de 20 lapins de Nouvelle-Zélande au moyen du modèle de brûlure par peigne. Ils ont obtenu le PRP dans le sang prélevé dans l'oreille des lapins (n = 10) et l'ont injecté par voie sous-cutanée dans la zone de la stase (n = 10). Ils ont injecté la même quantité de soluté physiologique dans la zone de la stase du groupe témoin de lapins (n = 10). Ils ont analysé l'apoptose histologique et immunohistochimique pour évaluer les secteurs viables. RÉSULTATS: Les taux d'apoptose étaient plus élevés dans le groupe témoin que dans le groupe expérimental. La région de tissus viables de la zone de stase était plus étendue que dans le groupe témoin. L'infiltration de neutrophiles induite par infection était statistiquement plus basse dans le groupe expérimental. CONCLUSION: Dans ce modèle animal, la numération de l'apoptose, la mesure de la région des tissus viables et les résultats anti-inflammatoires dans la région de la brûlure confirment que le traitement par PRP a des répercussions positives statistiquement importantes pour la survie de la zone de stase en cas de brûlure aiguë.

Evaluation of the Extent of Vessel Avulsion Injury: An Experimental Study Using a Rabbit Model.

BACKGROUND: Determining the extent of damage in vascular avulsion type injuries still represents a challenge for the microsurgeon. Excision of the damaged section is critical for the success of anastomosis. The purpose of this study was to determine which among vascular endothelial and adventitia damage findings is most effective in determining the extent of avulsion injury. METHODS: Varying degrees of avulsion were applied to the aorta of 12 (n = 12) adult female New Zealand rabbits. Avulsion was first determined using adventitial findings and then with endothelial findings. The definitive extent of damage was determined histopathologically. RESULTS: The mean area of the histopathological sections was 16.7 ± 6.9 mm. The extent of damage measured from the adventitia was 15.8 ± 7.9 mm (the difference in histopathological examinations was not significant, p = 0.590, paired t-test), while the extent of damage from the lumen was 13.3 ± 8.2 mm (the difference in histopathological examinations was significant p = 0.004, paired t-test). CONCLUSION: Excision based on adventitia findings is more effective in case of avulsion injury.

The effect of low molecular weight heparin on salvaging the zone of stasis in an experimental burn model

Background/aim: Multiple zones of injuries are formed after burns, consisting of a zone of coagulative necrosis, a zone of hyperemia, and a zone of stasis, in which progressive microcirculatory thrombosis leads to degeneration and deepening of the wound. We used an experimental rat comb burn model to test the hypothesis that use of low molecular weight heparin (LMWH) may save the zone of stasis. Materials and methods: Adult female rats were randomly divided two groups: the LMWH group (n = 8) rats received subcutaneous LMWH injections, while the saline group (n = 8) rats were injected with the same volume of saline solution by the same route. The zone of stasis was evaluated macroscopically and histologically, and functional capillary density was evaluated. Results: Histological assessments revealed higher macrophage numbers and PML density, fibroblast proliferation, and angiogenesis in the LMWH group than in the saline group. Functional capillary density measurement in the stasis zones revealed no significant difference between the two groups in the first 4 days, although a significant difference in favor of the LMW group was observed in the last 3 days. Conclusion: The results of this experimental study show that LMWH is effective in saving the zone of stasis.

Percutaneous Screws and External Fixation in Frontal Sinus Anterior Wall Fractures.

Fractures of the frontal sinus are frequently encountered injuries of maxillofacial fractures. The most common causes are traffic accidents, followed by sports-related injuries. There is still no consensus regarding the optimal management of frontal sinus fractures. The authors report a patient with depressed anterior wall fracture of the frontal sinus and superior orbital rim fracture. Reduction was performed by traction from 2 screws applied percutaneously to the depressed fragments and external fixation with an aluminum nasal splint. This technique is both minimally invasive and permits easy fixation in suitable patients.

Juvenile Hyaline Fibromatosis: A 10-year Follow-up.

Juvenile hyaline fibromatosis (JHF) is a rare hereditary disease with an autosomal recessive transmission. JHF is characterized by papulonodular skin lesions, osteolytic bone lesions, flexural joint contractures, and gingival hyperplasia and usually diagnosed in infancy or early childhood. JHF is thought to be a disorder of collagen metabolism and characterized by homogenous amorphous eosinophilic material and fibrous tissue. We report the case of a 14-year-old male child with multiple papulonodular skin lesions, progressive flexion contractures of joints, and severe gingival hyperplasia, with a 10-year follow-up. Although the lesions were totally removed thrice during the last 10 years, they recurred rigorously.

Microsurgical Replantation of Two Consecutive Traumatic Total Scalp Avulsions.

Total scalp avulsion is a rare but severe injury frequently ending in hair loss, and one that can even be life-threatening. It frequently occurs in women and in men with long hair and as a result of injuries by industrial or agricultural equipment or of animal attacks. The first option in treatment is replantation of hairy skin with microsurgery.The authors report 2 consecutive patients with total scalp avulsion presenting to our clinic. Similar injury mechanisms and total scalp avulsions were present in both patients. However, the noteworthy aspect of this report is the different outcomes in terms of scalp viability, which the authors think depends on the number of vessels repaired.

Virginal Breast Hypertrophy: Different Presentations of 2 Cases and the Role of Tamoxifen as an Adjuvant Therapy.

BACKGROUND: Virginal breast hypertrophy is a rapid and massive enlargement of one or both breasts. There are several proposed causes and treatment options for virginal breast hypertrophy, but the investigations to support these theories are lacking. CASES: We report two premenarchal girls with virginal breast hypertrophy who presented as different clinical cases. After their surgical interventions, their clinical courses were followed for more than 2 years with tamoxifen as an adjuvant therapy. SUMMARY AND CONCLUSION: Breast size and shape disorders can be a disturbing cosmetic problem for adolescents who worry about their body image. A combination treatment of breast reduction surgery and tamoxifen is reasonable and can eliminate the need for repeated surgeries for girls with virginal breast hypertrophy.

Congenital nail abnormalities: a review of the literature.

Congenital nail abnormalities (CNAs) are rare conditions in which the nail tissue appears abnormal compared with the fingers and the toes. They usually present accompanying deformities and disorders. Our purpose was to review the current literature on the clinical aspects of CNA. We reviewed the literature to evaluate peer-reviewed articles on the topic. Detailed reports have characterized many types of CNA. In this article, we provide a review of the literature based on the current understanding of CNAs and the clinical varieties thereof.

An evaluation of five different dressing materials on split-thickness skin graft donor site and full-thickness cutaneous wounds: an experimental study.

The objective of this study was to investigate the healing effect of five different products on split-thickness skin graft (STSG) donor sites and full-thickness cutaneous wounds (FTCWs) using an occlusive dressing model. Six groups were included: 1 control and 5 experimental groups, with a total of 24 rats, using an occlusive dressing model. STSG donor sites and FTCWs were established in two separate areas, to the right and left on the animals' backs. Wound sites were dressed with one of the following materials: fine mesh gauze, microporous polysaccharide hemosphere (MPH), clinoptilolite, alginate, hydrogel or biosynthetic wound dressing (Biobran(®) ). These materials were compared in terms of healing rate, healing quality and histopathological findings. Occlusive dressings were applied to each wound on days 0, 3, 5, 7, 10 and 14. Area measurements were taken using images of each dressing. The alginate and clinoptilolite groups gave the best healing rate results for both STSG donor sites (P = 0·003) and FTCWs (P = 0·003). MPH came third in each group. The alginate group produced better results in terms of healing quality criteria, followed by hydrogel, MPH, clinoptilolite and Biobran(®) , in that order. Statistically significant results were obtained in all groups compared to the control group (P < 0·0007). Rapid and good healing quality for both the STSG donor sites and FTCWs were obtained with alginate. Healing with clinoptilolite and MPH was rapid, but poor quality, while slower but good healing quality was obtained with hydrogel. Slower and worse quality healing was obtained with Biobran(®) .

Necrosis of the donor site after hair restoration with follicular unit extraction (FUE): a case report.

Follicular unit extraction (FUE) has been developed as one type of follicular unit transplantation surgery, a widely accepted hair-restoration technique. FUE has many advantages, including a small donor area scar, less pain and a slender graft without extra surrounding tissue. Complications are uncommon in the literature. We describe a case of donor-site necrosis after hair restoration with FUE, leading to cicatricial alopecia in the left half of the occipital region. The surgical management of this complication is also discussed. Cicatricial alopecia was treated by two-stage surgery with tissue expanders. There were no complications in the postoperative period and healing was uneventful. We conclude that although FUE has many advantages, necrosis of the donor site may be a serious problem.

Giant cementoblastoma of the impacted mandibular incisor.

The cementoblastoma is a relatively rare type of all odontogenic tumors. The incisor and impacted or unerupted tooth involvement by a cementoblastoma is extremely rare. We present a case report of a giant cementoblastoma that involved an impacted mandibular incisor.

Relation between serum ischemia-modified albumin levels and rectus abdominis muscle flap viability.

Ischemia is a major cause of flap failure in reconstructive surgery. To detect circulatory compromise, many flap monitoring methods are used; however, there is no any optimal standard method. Ischemia-modified albumin (IMA) is an ischemia marker, which has recently been investigated in many studies and largely validated for early detection of ischemia. In this study, we investigated possible relationship between muscle flap viability and serum IMA levels in experimental flap model. The rectus abdominis muscle flap model was used in 18 New Zealand white rabbits. The study was planned using 3 groups. In group 1, the rectus abdominis muscle flap was harvested as a superior pedicle-based flap in which the inferior pedicle was sacrificed. In group 2, the flap was harvested by severing the superior pedicle. Both pedicles were harvested in group 3. Serum IMA levels were measured before the procedure and 1 hour, 6 hours, and 7 days postoperatively and then compared. In group 3, in which the ischemia was evident, and in group 1, IMA levels were significantly high 1 hour postoperatively (P < 0.05). There was no other significant difference in any of the other studied parameters between the groups. In conclusion, IMA can be used as a biochemical parameter for monitoring muscle flap viability.

The effect of Hirudoid on random skin-flap survival in rats.

BACKGROUND: One of the main fields of research in flap surgery is to increase the viability of flaps. Many materials have been tested for this purpose. This study shows that topical application of Hirudoid, an organoheparinoid, increases flap survival of dorsal flaps in rats. METHODS: Hirudoid was used topically every day in eight of 16 rats in which 10x3-cm dorsal flaps were prepared. The flaps were taken for analysis on the 10th day. Analysis of the flaps was performed using digital measurement and scintigraphy. RESULTS: Analysis revealed that the flap necrosis area was smaller in the Hirudoid group compared to the control group. In addition, the area exhibiting radioactive uptake in scintigraphy was greater in the treatment group. CONCLUSION: Topical administration of Hirudoid may significantly improve flap survival.

Large orbital osteoma arising from orbital roof: Excision through an upper blepharoplasty incision.

Osteoma is the most common benign tumor of facial bony structure. Intraorbital extension is extremely rare. We report a case of intraorbital, pedicled osteoma originating from the left orbital roof. The patient's ophtalmological examination revealed; only light perception due to the severe amblyopia and posterior capsular opacification in the right eye, and complete visual acuity in the left. His left eye was proptotic and directed to downward lateral gaze position. Using upper blepharoplasty incision, the osteoma was completely excised. There were not any postoperative complications and all ocular symptoms in the left eye were resolved after 1 month.

Reconstruction of full-thickness nasal defect by free anterolateral thigh flap.

CONCLUSION: Because of minimal donor region morbidity, pliability, the presence of long and large caliber vessels, and lack of visible scar, the free anterolateral thigh flap provides an ideal option for restoration of full-thickness nasal defects. OBJECTIVE: Full-thickness nasal defect reconstruction requires internal nasal lining and external cover. In large defects, internal nasal lining replacement with traditional sources may not be expedient. We describe reconstruction of full-thickness nasal defects with free anterolateral thigh flap. PATIENTS AND METHODS: From August 2005 to July 2007, six patients with full-thickness nasal defects underwent nasal reconstruction using free anterolateral thigh flap. All defects resulted from tumor resections. Four patients had a basal cell carcinoma, one an epidermoid carcinoma, and the other patient had recurrent malignant fibrous histiocytoma. RESULTS: All flaps survived completely. The average hospitalization time was 3 days. No complication was observed.

Necrotizing fasciitis with ruminococcus.

Necrotizing fasciitis is a life- and limb-threatening soft tissue infection. Due to its underlying predisposition and rapid progression, treatment should be started quickly using antibiotherapy and surgical intervention. Although necrotizing fasciitis is mainly caused by streptococci and staphylococci, it may also be polymicrobial. Other peptostreptococci have been reported as necrotizing fasciitis agents in the literature, though we encountered no cases of necrotizing fasciitis caused by Ruminococcus productus. Here, we describe a case of necrotizing fasciitis caused by R. productus, a Gram-positive, obligatory anaerobe.