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International Journal of Tissue Reactions

S Mendoza, M Noa, R Más, N Mendoza
The mevalonate pathway is crucial for osteoclast function. D-003 is a mixture of high molecular weight acids purified from sugarcane wax, which inhibits cholesterol biosynthesis through HMG-CoA reductase regulation. D-003 administered at 50 and 200 mg/kg for 12 weeks prevented bone loss in ovariectomized rats, increasing osteoclast apoptosis. The present study investigated whether the effects of D-003 on bone resorption and osteoclast apoptosis are dose-dependent. Rats were randomized into seven groups (10 rats/group): two control groups orally treated with the vehicle, one false-operated (sham) and another ovariectomized group (positive control), while another four groups received D-003 (5, 25, 50 and 200 mg/kg)...
2005: International Journal of Tissue Reactions
M Noa, M L Arruzazabala, D Carbajal, R Más, V Molina
Benign prostatic hyperplasia (BPH) is the nonmalignant, uncontrolled growth of prostate gland cells and stroma leading to difficulty in urinating. Lipid extracts from Saw palmetto (Arecaceae) fruits are used to treat BPH. The Cuban royal palm (Roystonea regia) is a member of this family and D-004, a lipid extract from its fruits, prevents prostate hyperplasia (PH) induced with testosterone, as opposed to dihydrotestosterone, in rodents. This study investigated whether D-004 could prevent the histological features of testosterone-induced PH in rats...
2005: International Journal of Tissue Reactions
S Yamagishi, T Matsui, K Nakamura, H Inoue
Pigment epithelium-derived factor (PEDF) is a natural extracellular component of the retina with neuronal differentiating activity. Decreased levels of PEDF in the mammalian eye have been shown to participate in proliferative diabetic retinopathy. In addition, we have recently found in in vitro experiments that PEDF protected against pericyte apoptosis, the earliest histopathological hallmark of diabetic retinopathy. These observations suggest that the loss of PEDF in the mammalian eye plays an important role in the development and progression of diabetic retinopathy...
2005: International Journal of Tissue Reactions
S Yamagishi, T Matsui, K Nakamura, M Takeuchi
Advanced glycation end products (AGEs), the senescent macroprotein derivatives that form in increased amounts in diabetes, have been implicated in the pathogenesis of diabetic vascular complications. Indeed, AGEs elicit oxidative stress generation in vascular wall cells through an interaction with their receptor (RAGE), thus playing an important role in vascular inflammation and altered gene expression of growth factors and cytokines. We have previously shown that minodronate, a nitrogen-containing bisphosphonate, blocked the angiogenic signaling of vascular endothelial growth factor in ECs through its antioxidative properties...
2005: International Journal of Tissue Reactions
K Kusumoto, K Bessho, K Fujimura, Y Okubo, Y Wang, N Kakudo, Y Ogawa
Bone morphogenetic protein (BMP) is a unique cytokine that induces bony tissue in soft tissue. Tissue reactions at and around the implantation of recombinant human BMP-2 (rhBMP-2) into the soft tissue of rats and nonhuman primates were investigated. At the osteoinduced site of rats, massive trabeculae-lined osteoblasts and rich marrow were observed. At and around the nonosteoinduced sites of nonhuman primates, large clear nuclei were observed in reaction to rhBMP-2 implantation. The surrounding area was visually classified into zones 1, 2 and 3...
2005: International Journal of Tissue Reactions
A V Roussaki-Schulze, C Rammos, E Rallis, A Terzis, N Archontonis, A Sarmanta, E Klimi, E Zafiriou
The increasing incidence of melanoma in the general population during the last few decades has provoked a great deal of research, aiming to identify the possible relationship between old and new etiological factors involved in the pathogenesis of this tumor. The aim of the study was to evaluate the incidence of melanoma in central Greece, especially in the prefecture of Larissa from January 1988 to December 1998. Data were collected from the General Hospital of Larissa. Seventy-one cases of melanoma were studied (41 females, 30 males)...
2005: International Journal of Tissue Reactions
N Onsun, H Ufacik, Y Kural, E Topçu, A Somay
Mycosis fungoides is the most common type of cutaneous T-cell lymphoma. The extent and type of skin involvement (T classification) and presence of lymph node or visceral involvement are important predictors in selecting the type of treatment. Skin directed treatment represents the most appropriate therapy for early stage disease. Current topical treatment including potent topical steroids and nitrogen mustard are associated with adverse effects such as cutaneous atrophy and contact dermatitis. In the present study, we tested the efficacy of imiquimod in mycosis fungoides plaques...
2005: International Journal of Tissue Reactions
G Duweb, J Alhaddar, M Abuhamida
Psoriasis is characterized by three main pathogenic features: abnormal differentiation, keratinocyte hyperproliferation and inflammation. The lesions may disappear spontaneously or as a result of therapy, but recurrences are almost certain. Twenty-seven patients with scalp psoriasis were treated with calcipotriol solution 50 g/ml as twice-daily application for 8 weeks. The assessment was based on the mean sign scores (erythema, thickness and scaliness) at 0, 2, 4, 6 and 8 weeks. The results indicated that five patients were excluded from the study (four because of irregularity and one because of irritation), and 22 patients had completed the treatment course...
2005: International Journal of Tissue Reactions
L G De Filippis, A Caliri, R Lo Gullo, S Bartolone, G Miceli, S P Cannavò, F Borgia, G Basile, G Aloisi, G Zimbaro, E Scribano, G F Bagnato
The aim of the present study was to detect entheseal abnormalities by means of ultrasonography (US) in patients with psoriasis. We evaluated 24 patients with psoriasis who underwent clinical and ultrasonographic examination of both lower limbs at the calcaneal insertions of the Achilles tendons and at the flexor and extensor tendons of all fingers of the hand. Fourteen patients with psoriatic arthritis were used as controls. US was performed using a real-time scanner (ATL SDI 3000) with a 5-12 MHz linear array transducer...
2005: International Journal of Tissue Reactions
G Duweb, J Alhaddar, M Abuhamida
The cause of psoriasis is still unknown. It occurs with equal frequency in both sexes. In many patients topical application alone will suffice to keep psoriasis under control. Vitamin D3 affects keratinocyte differentiation in psoiasis. Thirteen patients with mild to moderate psoriasis vulgaris were enrolled in this trial (eight men and five women), aged between 14 and 40 years. Each patient was instructed to apply calcipotriol cream once daily on the right side and twice daily on the left side for 6 weeks...
2005: International Journal of Tissue Reactions
F Rocha Paris, A Fidalgo, J Baptista, L Lopes Caldas, A Ferreira
Hailey-Hailey disease, or familial benign chronic pemphigus, is a rare relapsing-remitting autosomal-dominant epidermal blistering disease. It preferentially affects females and is characterized by recurrent vesicles and erosions in the intertriginous areas. There are several topical corticosteroid therapeutic options, which are often limited in their use by their secondary effects and localization of the lesions. We report a case of a 60-year-old woman with Hailey-Hailey disease involving axillary, groin, cervical, antecubital, inframammary and abdominal folds...
2005: International Journal of Tissue Reactions
C Hurdag, H Ozkara, S Citci, I Uyaner, C Demirci
Diabetes-induced erectile dysfunction is one of the most prevalent complications of diabetes in males. alpha-Lipoic acid (ALA) and its reduced form, dihydrolipoic acid, are powerful antioxidants. Data strongly suggest that, because of its antioxidant properties, ALA is particularly suited to the prevention and/or treatment of diabetic complications that arise from overproduction of reactive oxygen and nitrogen. The aim of this study was to investigate the localization of nitric oxide synthetase (NOS) in normal and diabetic rat cavernous smooth muscles and to examine the effects of ALA on them...
2005: International Journal of Tissue Reactions
S Yamagishi, M Takeuchi, H Inoue
Diabetic nephropathy is a leading cause of end-stage renal disease in industrialized countries. Although the molecular mechanisms for the development and progression of diabetic nephropathy are not fully understood, the formation and accumulation of advanced glycation end products (AGEs) have been considered to play a major role in the pathogenesis of diabetic nephropathy. Hypertension is also an independent risk factor for the progression of diabetic nephropathy. However, functional cross-talk between AGEs and blood pressure and their involvement in diabetic nephropathy remain to be elucidated...
2005: International Journal of Tissue Reactions
S Yamagishi, T Imaizumi
Microvessels are composed of two types of cells: endothelial cells and pericytes. Pericytes are elongated cells of mesodermal origin that partially surround the endothelial cells of small vessels. As pericytes contain contractile muscle filaments on their endothelial cell side, they have long been regarded as just microvascular counterparts of smooth muscle cells, thus being implicated in the regulation of capillary tone. However recent understanding of pericyte biology suggests that pericytes play an important role in the maintenance of microvascular homeostasis...
2005: International Journal of Tissue Reactions
S O Moon, W Kim, D H Kim, M J Sung, S Lee, K P Kang, A S Yi, K Y Jang, S Y Lee, S K Park
Radiocontrast media can induce vascular endothelial cell apoptosis. Apoptotic damage to the vascular endothelium is an important mechanism in vascular disease. Several growth factors with anti-apoptotic effects may help protect the vascular endothelium from apoptosis. The present study evaluated whether the radiocontrast agent iopromide induces apoptosis in human umbilical vein endothelial cells and also whether angiopoietin-1 (Ang1) protects against iopromide-induced apoptosis through the p70 S6 kinase-dependent signaling pathway...
2005: International Journal of Tissue Reactions
M Micali, M R Nasca, M L Musumeci
The efficacy and safety of imiquimod, an immune-response modifier approved for the treatment of anogenital warts that has antiviral and antitumor activity, in the management of an extensive superficial basal cell carcinoma (sBCC) of the face as an alternative to surgical treatment was evaluated in a 75-year-old male with a 4-year history of a progressively enlarging lesion located on the right temporal region. Imiquimod 5% cream was applied daily until clinical resolution. Histopathological confirmation of clinical diagnosis and of tumor clearance were performed before starting treatment and at the end of treatment, respectively...
2005: International Journal of Tissue Reactions
E Rallis, A Nasiopoulou, C Kouskoukis, A Roussaki-Schulze, E Koumantaki, A Karpouzis, A Arvanitis
Alopecia areata is a chronic, nonscarring hair loss condition with an unpredictable course that may cause emotional stress in affected patients. Regarding its pathogenesis, the most accepted theory is that alopecia areata is a T-cell-mediated autoimmune condition that is most likely to occur in genetically predisposed individuals. Cyclosporin A is an immunosuppressive agent that has provided new approaches in the treatment of autoimmune diseases. Hypertrichosis, one of the common side effects of orally administered cyclosporin A, encouraged a number of investigators to use the drug in the treatment of alopecia areata, but the reports on this subject have been controversial...
2005: International Journal of Tissue Reactions
V Duran, M Matic, M Jovanovć, N Mimica, Z Gajinov, M Poljacki, P Boza
The aim of this study was to determine the therapeutic efficacy of marigold (Calendula officinalis) extract on the epithelialization of lower leg venous ulcers. The experiment was carried out in 34 patients with venous leg ulcers. The patients were divided into two groups. In the first (experimental) group, patients were treated with an ointment containing marigold extract, which was prepared in an apparatus devised by Soxleth and was incorporated into a neutral base. Twenty-one patients with 33 venous ulcers were treated...
2005: International Journal of Tissue Reactions
S Boisnic, M C Branchet-Gumila, T Nocera
In the past few years, the cellular effects of ultraviolet (UV) irradiation induced on skin have become increasingly recognized. Indeed, it is now well known that UV irradiation induces structural and cellular changes in all the compartments of skin tissue. Our aim was to study the anti-aging efficacy of a cosmetic cream containing 0.05% retinaldehyde associated with an antioxidant such as pretocopheryl in comparison with a cream containing only 0.05% retinaldehyde. For this purpose, an ex vivo technique using human skin was used to approximate in vivo metabolic conditions...
2005: International Journal of Tissue Reactions
S Boisnic, M C Branchet, V Ermosilla
By using a reconstituted skin model, we aimed to evaluate the efficacy of a spray containing Rhealba oat extract on the rapidity of healing and the extension of the newly formed epithelium. A dermal equivalent was first made in a petri dish by combining skin fibroblasts with collagen type I. Then a punch biopsy as a source of epidermal cells was implanted on this dermal equivalent, where a multilayered epidermis developed. The spray containing Rhealba oat extract was added to the culture medium to evaluate epidermal growth by immunohistochemical analysis of mitotic activity (5-bromo-2'-deoxyuridine [BrDu] incorporation)...
2005: International Journal of Tissue Reactions
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