51
|
Abstract
The antibacterial activity of different crude extracts of Clausena heptaphylla leaves as well as three purified coumarins, obtained from the cold methanol extract, is reported.
Collapse
|
52
|
Rashid MA, Ortenwall P, Wikström T. Cardiovascular Injuries associated with Sternal Fractures. ACTA ACUST UNITED AC 2001; 167:243-8. [PMID: 11354314 DOI: 10.1080/110241501300091345] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
OBJECTIVE To find out if the presence of a sternal fracture indicates cardiac and aortic injuries and to clarify the difference between a retrosternal haematoma and widened mediastinum. DESIGN Retrospective study. SETTING Teaching hospital, Sweden. SUBJECTS 418 patients with blunt chest trauma of whom 29 had a fractured sternum (11 with retrosternal haematoma and 18 without) and 389 did not (7 with widened mediastinum and 382 without). MAIN OUTCOME MEASURES Definitions, risk factors, morbidity, and mortality. RESULTS Retrosternal haematomas were found adjacent to many fractures and ranged in size from a few mm to 2 cm. They were more common in fractures of the body of sternum. There was no significant difference in the number of associated lesions between patients with sternal fractures with or without a retrosternal haematoma. Conversely, patients with a widened mediastinum had a higher injury severity score, longer hospital stay (p < 0.0001), and more associated lesions (p < 0.05) than those with retrosternal haematomas. Six patients still had pain 1 month after injury of whom two had injury-related long-term disability because of pain. No serious cardiac or aortic injuries were detected in this series. The early mortality in our study was 2/29 in patients with sternal fractures and 1/7 in patients with widened mediastinum. CONCLUSIONS Sternal fractures are more common than previously reported. An aggressive approach including early operative reduction is recommended even for a stable fracture to reduce the overhelming pain. Sternal fracture with or without retrosternal heamatoma is not a reliable indicator of cardiac and aortic injuries, while mediastinal widening is still a fairly reliable clue that should indicate further investigation.
Collapse
|
53
|
Rouf AS, Ozaki Y, Rashid MA, Rui J. Dammarane derivatives from the dried fruits of Forsythia suspensa. PHYTOCHEMISTRY 2001; 56:815-8. [PMID: 11324910 DOI: 10.1016/s0031-9422(01)00028-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Anti-inflammatory activity guided fractionation of the n-hexane soluble fraction of a 70% aqueous methanolic extract of the dried fruits of Forsythia suspensa afforded two new triterpenes. The structures of these compounds were elucidated as 3beta-acetyl-20,25-epoxydammarane-24alpha-ol (1) and 3beta-acetyl-20,25-epoxydammarane-24beta-ol (2) on the basis of spectral data interpretation as well as by comparison with those of structurally similar compounds.
Collapse
|
54
|
Hasan CM, Asha KN, Rashid MA. Aristolactams from the stem bark of Uvaria hamiltonii. BIOCHEM SYST ECOL 2001; 29:207-208. [PMID: 11106850 DOI: 10.1016/s0305-1978(00)00035-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
55
|
Abstract
The antibacterial activity of the ethanol extract of Barringtonia racemosa roots, its chloroform soluble fraction and, a there from an isolated clerodane diterpenoid is reported.
Collapse
|
56
|
Rashid MA, Gustafson KR, Cartner LK, Shigematsu N, Pannell LK, Boyd MR. Microspinosamide, a new HIV-inhibitory cyclic depsipeptide from the marine sponge Sidonops microspinosa. JOURNAL OF NATURAL PRODUCTS 2001; 64:117-21. [PMID: 11170684 DOI: 10.1021/np0002379] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Microspinosamide (1), a new cyclic depsipeptide incorporating 13 amino acid residues, was isolated from extracts of an Indonesian collection of the marine sponge Sidonops microspinosa. Its structure was elucidated by extensive NMR and mass spectral analyses, and by chemical degradation and derivatization studies. The tridecapeptide 1 incorporates numerous uncommon amino acids, and it is the first naturally occurring peptide to contain a beta-hydroxy-p-bromophenylalanine residue. Microspinosamide (1) inhibited the cytopathic effect of HIV-1 infection in an XTT-based in vitro assay with an EC(50) value of approximately 0.2 microg/mL.
Collapse
|
57
|
Abstract
The alkaloidal fraction obtained from an ethanolic extract of the leaves of Mikania cordata exhibited significant in vivo antiulcer activity in diclofenac sodium-induced gastric erosions in Long Evans rats.
Collapse
|
58
|
Dazai S, Akita S, Hirano A, Rashid MA, Naito S, Akino K, Fujii T. Leukemia inhibitory factor enhances bone formation in calvarial bone defect. J Craniofac Surg 2000; 11:513-20. [PMID: 11314490 DOI: 10.1097/00001665-200011060-00002] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
For bone defect reconstruction, locally administered cytokine plasmid was examined. Leukemia inhibitory factor (LIF) can bind to the osteoblast cell surface and induce bone formation both in vitro and in vivo. The authors investigated the local mouse LIF complementary deoxyribonucleic acid (cDNA) plasmid in the pcDNA 3 expression vector, which is promoted by cytomegalovirus and is stabilized by bovine growth hormone polyadenylation, with a gelatin sponge carrier. A total of 150 male Wistar rats were used. They were divided into three groups. Group 1 (N = 30) was treated with the gelatin carrier of the pcDNA 3 vector, group 2 (N = 90) was treated with three different doses of LIF cDNA (0.1, 1, and 10 micrograms) in the pcDNA 3-vector plasmid along with the gelatin carrier, and group 3 (N = 30) was treated with recombinant human bone morphogenetic protein -2. Ten animals in each group were euthanized at 1, 3, and 5 weeks postoperatively. Animals treated with LIF cDNA showed significantly enhanced bone mineral density (p < 0.05), as confirmed by dual-energy X-ray absorptiometry (DEXA), in 3 weeks compared with the control vehicle. By 3 weeks, the number of fibroblast-like cells and collagen fibers decreased, whereas the osteoblast-like cells increased inversely, as revealed during histological examination. LIF messenger ribonucleic acid demonstrated by in situ hybridization was observed most markedly in osteocytes of the LIF cDNA-treated group. Also, LIF peptide was detected in the same cell type by immunohistochemistry. Locally administered LIF cDNA plasmid in a gelatin carrier can increase bone density significantly, with subsequent bone formation, probably via osteocyte activation.
Collapse
|
59
|
Haque N, Chowdhury SA, Nutan MT, Rahman GM, Rahman KM, Rashid MA. Evaluation of antitumor activity of some medicinal plants of Bangladesh by potato disk bioassay. Fitoterapia 2000; 71:547-52. [PMID: 11449504 DOI: 10.1016/s0367-326x(00)00162-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The antitumor activity of the ethanolic extracts of 12 medicinal plants of Bangladesh, including the vincristine-vinblastine producing Catharanthus roseus was studied using the potato disk bioassay technique. Among these, 10 plant extracts at 25.0-microgram/disc exhibited significant inhibition of crown gall tumors caused by Agrobacterium tumefaciens.
Collapse
|
60
|
Kundu JK, Rouf AS, Hossain MN, Hasan CM, Rashid MA. Antitumor activity of epifriedelanol from Vitis trifolia. Fitoterapia 2000; 71:577-9. [PMID: 11449513 DOI: 10.1016/s0367-326x(00)00191-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The isolation and NMR spectral data of epifriedelanol from Vitis trifolia are reported. It demonstrated antitumor activity in a potato disc bioassay.
Collapse
|
61
|
Abstract
The 1H- and 13C-NMR spectral data of ovatodiolide (1), a diterpenoid from Anisomeles indica, and its anti-HIV activity are reported.
Collapse
|
62
|
Abstract
Goniothalamusin and two mixtures, acetogenins-A and acetogenins-B, isolated from a petroleum ether extract of the stem bark of Miliusa velutina exhibited significant antibacterial and cytotoxic activities.
Collapse
|
63
|
Rashid MA, Wikström T, Ortenwall P. Nomenclature, classification, and signficance of traumatic extrapleural hematoma. THE JOURNAL OF TRAUMA 2000; 49:286-90. [PMID: 10963541 DOI: 10.1097/00005373-200008000-00016] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Extrapleural hematoma has been found mostly in single case reports as diagnoses with different names. Although huge extrapleural hematoma can cause ventilatory and circulatory disturbances and even death, it has received almost no attention in the literature. Certain basic and modern facts need to be clarified regarding the definition, classification, and significance of extrapleural hematoma in the practice of chest trauma. METHODS A 10-year retrospective study was undertaken to analyze the incidence, diagnosis, management, morbidity, and mortality of patients with chest trauma and a documented extrapleural hematoma. RESULTS The incidence of traumatic extrapleural hematoma was 34 of 477, 7.1%. The incidence of thoracic lesions was 86 of 34 = 2.5 lesions per patient, whereas the incidence of extrathoracic lesions was 30 of 34 = 0.9 lesions per patient. Associated rib fractures were found in 30 of 34, 88.2%. More than half of the patients had an associated hemothorax. A thoracotomy was used successfully to remove a huge hematoma in one patient. CONCLUSION Extrapleural hematoma has been found to be more common than previously reported. Nomenclature and classification are suggested. One of the common injuries to the chest, particularly rib fracture, hemothorax, lung contusion, or pneumothorax might provide the surgeon with a reliable clinical clue that the patient is at inordinate risk to have associated extrapleural hematoma. A formal or mini-thoracotomy is the recommended procedure in cases of huge hematomas.
Collapse
|
64
|
Rashid MA, Gustafson KR, Boswell JL, Boyd MR. Haligramides A and B, two new cytotoxic hexapeptides from the marine sponge Haliclona nigra. JOURNAL OF NATURAL PRODUCTS 2000; 63:956-9. [PMID: 10924173 DOI: 10.1021/np000051+] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Bioassay-guided fractionation of a cytotoxic aqueous extract of the sponge Haliclona nigra provided two new cyclic hexapeptides, haligramides A (1) and B (2), in addition to the known peptide, waiakeamide (3). The structures of peptides 1 and 2 were elucidated by extensive NMR analyses and by comparison of their spectral data with those of waiakeamide (3). The identity of haligramide A (1) was confirmed by its oxidative conversion to waiakeamide (3). Further structural confirmation was provided by oxidation of peptides 1, 2, and 3 to the common bis-sulfone derivative 4.
Collapse
|
65
|
Datta BK, Datta SK, Rashid MA, Nash RJ, Sarker SD. A sesquiterpene acid and flavonoids from Polygonum viscosum. PHYTOCHEMISTRY 2000; 54:201-205. [PMID: 10872211 DOI: 10.1016/s0031-9422(00)00057-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
4-Isobutyl-6-methyl-5-oxo-3a,4,5,7a-tetrahydro-1H-inden-13-oic acid (named viscosumic acid) and quercetin 3-O-(6"-feruloyl)-beta-D-galactopyranoside, and the known 3',5-dihydroxy-3,4',5',7-tetramethoxyflavone have been isolated from Polygonum viscosum. The structures of these isolates were determined primarily on the basis of extensive 1D and 2D NMR spectral analyses, notably, 13C PENDANT, COSY45, TOCSY, GOESY, NOESY, HMQC and HMBC.
Collapse
|
66
|
Rashid MA, Gustafson KR, Boyd MR. HIV-inhibitory cembrane derivatives from a Philippines collection of the soft coral Lobophytum species. JOURNAL OF NATURAL PRODUCTS 2000; 63:531-533. [PMID: 10785433 DOI: 10.1021/np990372p] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Bioassay-guided fractionation of an aqueous extract of a Philippine Islands collection of the soft coralLobophytum sp. concentrated its HIV-inhibitory activity into fractions rich in cembranoid diterpenes. Lobohedleolide (1), (7Z)-lobohedleolide (2), and a new compound, 17-dimethylaminolobohedleolide (3), were purified from these fractions by HPLC. The structures of compounds 1-3 were elucidated by spectroscopic analyses and by comparison of their spectral data with previously reported values. The relative stereochemistry of the gamma-lactone ring substituents of 3 was determined by 1D NOESY experiments. While several other cembranoids that contain a dimethylamino functional group have been reported from the soft coral Sinularia sp., compound 3 represents the first cembrane diterpene with this functional group isolated from a Lobophytum species. Diterpenoids 1-3 exhibited moderate HIV-inhibitory activity (EC(50) approximately 3-5 microg/mL) in a cell-based in vitro anti-HIV assay.
Collapse
|
67
|
Hasan CM, Khan S, Jabbar A, Rashid MA. Nasimaluns A and B: neo-clerodane diterpenoids from barringtonia racemosa. JOURNAL OF NATURAL PRODUCTS 2000; 63:410-411. [PMID: 10757734 DOI: 10.1021/np990488l] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
An ethanolic extract of the roots of Barringtonia racemosa afforded two novel neo-clerodane-type diterpenoids, methyl-15, 16-epoxy-12-oxo-3,13(16),14-neo-clerodatrien-18, 19-olide-17-carboxylate (nasimalun A, 1) and dimethyl-15,16-epoxy-3, 13(16),14-neo-clerodatrien-17,18-dicarboxylate (17-carboxymethylhardwickiic acid methyl ester, nasimalun B, 2) by NMR and MS analyses and by comparison of their spectral data with related compunds. The relative stereochemistry of the asymmetric centers in 1 and 2 was determined by selective 1D NOESY experiments.
Collapse
|
68
|
|
69
|
Rashid MA, Wikström T, Ortenwall P. Cardiac injuries: a ten-year experience. THE EUROPEAN JOURNAL OF SURGERY = ACTA CHIRURGICA 2000; 166:18-21. [PMID: 10688211 DOI: 10.1080/110241500750009645] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
OBJECTIVE To present our experience of cardiac injuries treated at one Swedish emergency department in the 10 years 1988-97. DESIGN Retrospective study. SETTING Teaching hospital. SUBJECTS 11 patients (9 men and 2 women, mean age 33 years, range 19-54); in 7 they were penetrating injuries and in 4 blunt. MAIN OUTCOME MEASURES Morbidity and mortality. RESULTS The mechanisms of injury were stab wound (n = 7), and car crash, fall, boat crash, and abuse (n = 1 each); drug or alcohol misuse played a part in all those with penetrating injuries. The penetrating wounds involved the left ventricle (n = 3), the right ventricle (n = 2), and the pericardium (n = 2). All 5 patients with ventricular wounds presented with cardiac tamponade, in 1 of whom it was fatal (he bled to death during emergency thoracotomy). The main complications were anoxic brain damage and postpericardiotomy syndrome (1 each). There was no case of myocardial concussion. CONCLUSION Our data reflect the Swedish experience of heart trauma: there are few cases, alcohol and drug misuse is the principal risk factor, and there were no gunshot wounds.
Collapse
|
70
|
Rashid MA, Wikström T, Ortenwall P. Outcome of lung trauma. THE EUROPEAN JOURNAL OF SURGERY = ACTA CHIRURGICA 2000; 166:22-8. [PMID: 10688212 DOI: 10.1080/110241500750009654] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
OBJECTIVE To find out whether we could manage critical pulmonary haemorrhages in penetrating injuries, and to report our experience with blunt trauma of the lung. DESIGN Retrospective study. SETTING Teaching hospital, Sweden. SUBJECTS 81 patients who presented with pulmonary injuries during the period January 1988-December 1997; 6 were penetrating and 75 blunt. RESULTS There was only one patient with an isolated lung contusion. The remaining was divided into 2 groups: those with pulmonary contusion and thoracic lesions (n = 32), and those with pulmonary contusion and extrathoracic lesions (n = 42). Four patients in the penetrating group were shocked and required urgent operations; emergency room thoracotomy (n = 1), urgent thoracotomy (n = 2), and urgent thoracoabdominal exploration (n = 1) were done successfully. We correlated grade of lung injury [American Association for the Surgery of Trauma-Abbreviated Injury Scale (AIS)] with mortality. All patients with penetrating injuries survived without serious consequences. There were a mean (SD), of 6 (2) injuries/patient in those with extrathoracic injuries compared with 3 (1) injuries/patient in the group with thoracic lesions (p < 0.001). The corresponding hospital mortality was 6/42 (19%) mainly as a result of the central nervous system lesions (4/6) compared with 0/32. The mean (SD) Injury Severity Score (ISS) was 9.3 (4.8) in patients with thoracic lesions compared with 24.1 (14.7) in patients with extrathoracic lesions (p < 0.0001), and 14.9 (9.5) in all survivors compared with 49.9 (13.6) among those who died (p < 0.0001). CONCLUSIONS An excellent outcome can be achieved managing penetrating injuries of the lung by an aggressive approach and urgent surgical intervention even when emergency room thoracotomy is essential. Pulmonary contusion is considered to be a relatively benign lesion that does not add to the morbidity or mortality in patients with blunt chest trauma. These data may help to decrease the obsession with pulmonary contusion in patients with chest trauma, with or without extrathoracic lesions, and avoid many unnecessary computed tomograms of the chest.
Collapse
|
71
|
Rashid MA, Wikström T, Ortenwall P. Pneumomediastinum after nasal fracture. THE EUROPEAN JOURNAL OF SURGERY = ACTA CHIRURGICA 1999; 165:903-4. [PMID: 10533769 DOI: 10.1080/11024159950189438] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
72
|
Rashid MA. Value of video-assisted thoracic surgery in traumatic extrapleural hematoma. Thorac Cardiovasc Surg 1999; 47:255-7. [PMID: 10522798 DOI: 10.1055/s-2007-1013155] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The current article reports on a rare case recently experienced, in which a medially displaced extrapleural fat layer with parietal pleura, revealed by CT scan of the chest, was a sign of traumatic extrapleural hematoma. Video-assisted thoracic surgery was not suited to approaching and managing the extrapleural hematoma, so that a limited thoracotomy was mandatory. Extrapleural hematoma should be considered a relative major contraindication to video-assisted thoracic surgery.
Collapse
|
73
|
Huq MM, Jabbar A, Rashid MA, Hasan CM, Ito C, Furukawa H. Steroids from the roots of Nerium oleander. JOURNAL OF NATURAL PRODUCTS 1999; 62:1065-1067. [PMID: 10425146 DOI: 10.1021/np990031b] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Two new cardenolides, 3beta-hydroxy-5alpha-carda-14(15), 20(22)-dienolide (beta-anhydroepidigitoxigenin) (1) and 3beta-O-(D-digitalosyl)-21-hydroxy-5beta-carda-8,14,16 , 20(22)-tetraenolide (neriumogenin-A-3beta-D-digitaloside) (2), and two known compounds, proceragenin and neridienone A (3), have been isolated from the roots of Nerium oleander. The structures of 1 and 2 were elucidated on the basis of spectral data interpretation.
Collapse
|
74
|
Rashid MA, Wikström T, Ortenwall P. Pneumopericardium and pneumoperitoneum after penetrating chest injury. THE EUROPEAN JOURNAL OF SURGERY = ACTA CHIRURGICA 1999; 165:278-9. [PMID: 10231666 DOI: 10.1080/110241599750007199] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
75
|
Rashid MA, Akita S, Razzaque MS, Yoshimoto H, Ishihara H, Fujii T, Tanaka K, Taguchi T. Coadministration of basic fibroblast growth factor and sucrose octasulfate (sucralfate) facilitates the rat dorsal flap survival and viability. Plast Reconstr Surg 1999; 103:941-8. [PMID: 10077085 DOI: 10.1097/00006534-199903000-00026] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The effective use of local growth factors and cytokines may replace the lengthy staged surgical delay process. We tested the efficacy of basic fibroblast growth factor (bFGF) coadministered with sucralfate (sucrose octasulfate) on the rat dorsal flap model. A total of 76 male Wistar rats were used in this experiment. Four groups of the animals were divided. Group 1 (n = 5) was the vehicle control (saline soaked), group 2 (n = 5) was sucrose octasulfate soaked (100 microg/ml, 1 ml), group 3 (n = 5) was bFGF soaked (1 microg/ml, 1 ml), and group 4 (n = 5) was both bFGF and sucrose octasulfate soaked. All agents were soaked equally in Gelfoam. The flap survival measured by the quantitative computer-assisted morphologic analysis was significantly improved by day 5 postoperatively in the combined administration group compared with the vehicle control (81 and 53 percent, respectively; p < 0.05). In lead oxide-gelatin microangiography, there was enhanced pedicle vessel formation observed as well as the extended vessel sprouting up to very close to the distal end in combined group on day 5. The endogenous bFGF mRNA expressions shown by reverse transcriptase-polymerase chain reaction were detected in all four groups. The angiogenesis indicated by alpha-smooth muscle actin immunopositivity was significantly more enhanced in the combined group than the vehicle control (37.3 and 19.4, respectively; p < 0.01). In the combined group, there was stronger immunopositivity for bFGF in epidermis and hair follicles observed, and more notably bFGF-immunopositive dermal fibroblasts were evident. Thus, coadministration of bFGF and sucralfate markedly facilitates the rat dorsal flap survivability by enhancing the bFGF expression and angiogenesis.
Collapse
|