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| 2. |
- Engstrom, Olof, et al.
(författare)
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Proboscis Lateralis : A Novel Surgical Technique Using Tape Elongation and One-Stage Tunneling
- 2022
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Ingår i: The Journal of Craniofacial Surgery. - : Ovid Technologies (Wolters Kluwer Health). - 1049-2275 .- 1536-3732. ; 33:4, s. E438-E439
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Tidskriftsartikel (refereegranskat)abstract
- Proboscis lateralis is a rare craniofacial anomaly characterized by a tubular, trunk-like appendage, often arising from the medial canthal region. It can occur in isolation or in association with a variety of other anomalies. Several treatment options have been described depending on the characteristics of the defect, but due to its infrequency, the body of knowledge is limited. Here, the authors present a case of proboscis lateralis in an 18-month-old girl, being successfully treated with a novel technique including tape elongation and a 1 stage tunneling procedure.
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| 3. |
- Falk Delgado, Alberto, et al.
(författare)
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The Skoog Lip Repair for Unilateral Cleft Lip Deformity : The Uppsala Experience
- 2018
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Ingår i: Plastic and reconstructive surgery (1963). - 0032-1052 .- 1529-4242. ; 141:5, s. 1226-1233
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Tidskriftsartikel (refereegranskat)abstract
- Background: The Uppsala Craniofacial Center has been treating patients with unilateral cleft lip deformity using the lip repair technique described by Tord Skoog. The aim of this study was to determine complications after lip surgery and the incidence and indications for lip revisions in all patients born with unilateral cleft lip from 1960 to 2004.Methods: All patients who were born from 1960 to 2004 with unilateral cleft lip, cleft lip and alveolus, or cleft lip and palate and underwent lip repair were studied retrospectively. The timing, indication, complications of the primary procedure, and type of secondary surgery were recorded. Kruskal-Wallis and Fisher’s exact tests were used, with Bonferroni correction.Results: The study included 443 patients. The total rate of early surgical complications was 6 percent (n = 26). Secondary surgery for short upper lip was performed in 3.8 percent (n = 17), 8.4 percent (n = 37) underwent reduction of excess vermillion, 8.6 percent (n = 38) underwent scar revision, 11 percent (n = 51) underwent revision for incongruent vermillion-cutaneous border, and 10 percent (n = 45) underwent revision for other indications. Altogether, 45 percent had no secondary revisions.Conclusion: In conclusion, the Skoog lip repair is associated with a low total revision rate, and a short-lip deformity is rare.CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, IV.
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| 5. |
- Hakelius, Malin, 1965-
(författare)
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Interactions between Malignant Keratinocytes and Fibroblasts : Studies in Head and Neck Squamous Cell Carcinoma
- 2014
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Carcinoma growth requires a supportive tumor stroma. The concept of reciprocal interactions between tumor and stromal cells has become widely acknowledged and the connective tissue activation seen in the malignant process has been likened to that of a healing wound. Little is, however, known about the specific characteristics of these interactions, distinguishing them from the interplay occurring between epithelial and stromal cells in wound healing. In order to study differences in the humoral effects of malignant and benign epithelial cells on fibroblasts, we used an in vitro coculture model with human oral squamous cell carcinoma cells (SCC) or normal oral keratinocytes (NOK) on one side of a semi-permeable membrane and fibroblasts seeded in gels on the other. Pro-collagens α1(I) and α1(III) were more downregulated in NOK cocultures compared to SCC cocultures. IL-1α was identified as a major keratinocyte-derived soluble factor behind the effects observed. We concluded that SCC are less antifibrotic compared to NOK. There was also a differential expression among enzymes involved in ECM turnover. The urokinase-type plasminogen activator (uPA) and plasminogen activator inhibitor-1 (PAI-1) were both upregulated by NOK, but not by SCC. Here, rIL-1ra caused further upregulation of PAI-1. Global gene expression in fibroblasts was assessed using Affymetrix™ arrays. In total, 82 transcripts were considered differentially expressed; 52 were up- and 30 were downregulated in SCC compared to NOK cocultures. Among the differentially expressed genes there was an enrichment of genes related to collagens and to a nonspecific, innate-type response. The innate response marker pentraxin (PTX3) was upregulated by keratinocyte-derrived IL-1α in both NOK and SCC cocultures. We observed a considerably higher IL-1α / IL-1ra quotient in SCC cocultures, however, while PTX3 mRNA upregulation was higher in SCC cocultures, there was no difference in the level of PTX3 secreted protein. Taken together, we concluded that NOK and SCC regulate genes important for ECM composition and for the innate immune-response differentially. IL-1α was identified as one important mediator of the observed effects. In general, SCC appeared to be more profibrotic in their effects on fibroblasts.
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| 6. |
- Hakelius, Malin, et al.
(författare)
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Interleukin-1-mediated effects of normal oral keratinocytes and head and neck squamous carcinoma cells on extracellular matrix related gene expression in fibroblasts
- 2012
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Ingår i: Oral Oncology. - : Elsevier. - 1368-8375 .- 1879-0593. ; 48:12, s. 1236-1241
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: The composition of tumor stroma and the activity of tumor associated fibroblasts are important for tumor growth. Interactions between carcinoma cells and fibroblasts regulate the turnover of extracellular matrix (ECM). Here, the in vitro effects of oral squamous cell carcinoma (SCC) cells (UT-SCC-30 and UT-SCC-87) on fibroblast expression of genes for ECM components and connective tissue growth factor (CTGF/CCN2), were compared to those of normal oral keratinocytes (NOK).Materials and Methods: Cocultures with fibroblasts in collagen gels and keratinocytes with the two cell types separated by a semi permeable membrane were used, and relative gene expression was measured with real-time PCR.Results: All investigated genes were regulated by NOK and the SCCs. The downregulation of pro-collagens alpha 1(I) and alpha 1(III) was more pronounced in cocultures with NOK, while the expression of CCN2 and fibronectin was downregulated by both NOK and the SCCs to a similar extent. UT-SCC-87, but not UT-SCC-30, secreted significantly more IL-1 alpha than NOK. A recombinant interleukin-1 receptor antagonist reversed many of the observed effects on fibroblast gene expression suggesting involvement of IL-1 in cocultures with NOK as well as with SCCs.Conclusion: The observed differential effects on fibroblast gene expression suggest that NOK are more antifibrotic compared to UT-SCC-30 and UT-SCC-87. These findings may contribute to a better understanding of the mechanisms behind ECM turnover in tumors. (C) 2012 Elsevier Ltd. All rights reserved.
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| 7. |
- Hakelius, Malin, et al.
(författare)
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Keratinocytes and Head and Neck Squamous Cell Carcinoma Cells Regulate Urokinase-type Plasminogen Activator and Plasminogen Activator Inhibitor-1 in Fibroblasts
- 2013
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Ingår i: Anticancer Research. - 0250-7005 .- 1791-7530. ; 33:8, s. 3113-3118
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Tidskriftsartikel (refereegranskat)abstract
- Background: To investigate possible differences in the effects of soluble factors from oral squamous cell carcinoma (SCC) cells (UT-SCC-87) and normal oral keratinocytes (NOK) on fibroblast expression of genes involved in tumor stroma turnover. Materials and Methods: Transwell co-cultures with fibroblasts in collagen gels, and SCC cells or NOK in inserts were carried out. Fibroblast gene expression was measured with real-time polymerase chain reaction (PCR). Results: The expression of urokinase-type plasminogen activator (uPA) and plasminogen activator inhibitor-1 (PAI-1) was up-regulated in co-cultures with SCC cells but not with NOK. In contrast, both SCC cells and NOK regulated matrix metalloproteinase-1 (MMP1) and -3, and tissue inhibitor of metalloproteinases-2 (TIMP2) and -3 to a similar extent, while MMP2 and TIMP1 were largely unaffected. Interleukin 1 alpha (IL1 alpha) up-regulated both MMP1 and MMP3 and down-regulated PAI-1, TIMP2 and -3. Conclusion: SCC and NOK regulate fibroblast expression of genes involved in tumor stroma turnover differentially in vitro. These observations may contribute to a better understanding of the mechanisms behind extracellular matrix turnover in tumors.
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| 8. |
- Hakelius, Malin, 1965-, et al.
(författare)
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Normal oral keratinocytes and head and neck squamous carcinoma cells induce an innate response in fibroblasts
- 2016
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Ingår i: Anticancer Research. - 0250-7005 .- 1791-7530. ; 36:5, s. 2131-2137
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Background: Tumor stroma is similar to the connective tissue of chronic inflammation. The extracellular matrix of tumors is formed by cancer-associated fibroblasts that also modulate the inflammatory response. Materials and Methods: We studied the ability of oral keratinocytes (NOK) and oral squamous cell carcinoma cells (SCC) to induce an innate immune response in fibroblasts. Co-cultures with fibroblasts in collagen gels and keratinocytes in inserts were used. Pentraxin 3 (PTX3) was used as an indicator of an innate immune response. Results: SCC and NOK up-regulated fibroblast mRNA expression and protein release of PTX3. mRNA levels were more pronounced in cultures with malignant cells. The induction of PTX3 was abrogated by an interleukin-1 receptor antagonist Conclusion: Keratinocytes have the capacity to induce an interleukin-1-dependent innate immune response by fibroblasts in vitro. This could be important for subsequent fibroblast modulation of the inflammatory reaction in non-malignant and malignant disease processes.
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| 10. |
- Jabbari, Fatemeh, et al.
(författare)
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Correlations between initial cleft size and dental anomalies in unilateral cleft lip and palate patients after alveolar bone grafting
- 2016
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Ingår i: Upsala Journal of Medical Sciences. - : Uppsala Medical Society. - 0300-9734 .- 2000-1967. ; 121:1, s. 33-37
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Tidskriftsartikel (refereegranskat)abstract
- Objective To determine in individuals with unilateral cleft lip and palate the correlation between initial cleft size and dental anomalies, and the outcome of alveolar bone grafting. Methods A total of 67 consecutive patients with non-syndromic unilateral complete cleft lip and palate (UCLP) were included from the cleft lip and palate-craniofacial center, Uppsala University Hospital, Sweden. All patients were operated by the same surgeon and treated according to the Uppsala protocol entailing: lip plasty at 3 months, soft palate closure at 6 months, closure of the residual cleft in the hard palate at 2 years of age, and secondary alveolar bone grafting (SABG) prior to the eruption of the permanent canine. Cleft size was measured on dental casts obtained at the time of primary lip plasty. Dental anomalies were registered on radiographs and dental casts obtained before bone grafting. Alveolar bone height was evaluated with the Modified Bergland Index (mBI) at 1 and 10-year follow-up. Results Anterior cleft width correlated positively with enamel hypoplasia and rotation of the central incisor adjacent to the cleft. There was, however, no correlation between initial cleft width and alveolar bone height at either 1 or 10 years follow-up. Conclusions Wider clefts did not seem to have an impact on the success of secondary alveolar bone grafting but appeared to be associated with a higher degree of some dental anomalies. This finding may have implications for patient counseling and treatment planning.
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