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1.
Dermatol Online J ; 30(2)2024 Apr 15.
Article de Anglais | MEDLINE | ID: mdl-38959926

RÉSUMÉ

We present two middle-aged patients with pruritic, crusted scalp erosions. Skin biopsy showed epidermal acantholysis with IgG and C3 intercellular deposits on direct immunofluorescence, leading to the diagnosis of localized pemphigus vulgaris. Resolution of the lesions without relapse occurred after low doses of oral prednisone and intralesional triamcinolone acetonide.


Sujet(s)
Pemphigus , Dermatoses du cuir chevelu , Humains , Pemphigus/anatomopathologie , Pemphigus/diagnostic , Pemphigus/traitement médicamenteux , Dermatoses du cuir chevelu/anatomopathologie , Dermatoses du cuir chevelu/traitement médicamenteux , Dermatoses du cuir chevelu/diagnostic , Adulte d'âge moyen , Mâle , Triamcinolone acétonide/usage thérapeutique , Triamcinolone acétonide/administration et posologie , Femelle , Prednisone/usage thérapeutique , Glucocorticoïdes/usage thérapeutique , Cuir chevelu/anatomopathologie , Acantholyse/anatomopathologie , Acantholyse/diagnostic
2.
Swiss Med Wkly ; 154: 3363, 2024 Jun 17.
Article de Anglais | MEDLINE | ID: mdl-38885613

RÉSUMÉ

BACKGROUND: Benign tracheal stenosis is relatively rare but remains a significant chronic disease due to its drastic symptoms including dyspnoea and inspiratory stridor, and consequent negative effect on quality of life. Traditionally, the surgical approach by resection of the stenotic tracheal segment has been the therapy of choice. However, endoscopic techniques have arisen and may offer a safe and less invasive alternative. OBJECTIVES: The aim of the retrospective study was to evaluate procedure-related safety and outcome of endoscopic treatment of benign tracheal stenosis at a single centre. METHODS: The study included all patients at our institution who between 2013 and 2022 had received endoscopic treatment of benign tracheal stenosis by rigid tracheoscopy, radial incision by electric papillotomy needle and dilation (endoscopic tracheoplasty) followed by triamcinolone acetonide as a local submucosal injection and additionally, from 2020, budesonide inhalation. RESULTS: A total of 22 patients were treated in a total of 38 interventions, each resulting in immediate improvement of symptoms. There were no peri-interventional complications or mortality. Of the 38 interventions, 11 received no triamcinolone acetonide administration, resulting in a 54.5% recurrence rate after an average of 21.1 (±18.0) months, while 27 had local triamcinolone acetonide, with a 37% recurrence rate. Since 2020, we additionally initiated post-interventional budesonide inhalation as recurrence prophylaxis for newly admitted patients and patients with recurrences(n = 8), of whom only one (12.5%) has to date experienced a recurrence. CONCLUSION: Our results indicate that endoscopic tracheoplasty offers a safe and successful, minimally invasive alternative to open surgery for patients with benign tracheal stenosis. We recommend local administration of triamcinolone into the mucosa as an additional treatment to decrease the risk of recurrence. However, given the uncontrolled study design and low sample size, safety and effectiveness cannot be conclusively demonstrated. Nonetheless, our findings suggest promising avenues for further investigation. Further studies on the additional benefit of inhaled corticosteroids are warranted.


Sujet(s)
Sténose trachéale , Humains , Sténose trachéale/chirurgie , Femelle , Mâle , Études rétrospectives , Adulte d'âge moyen , Endoscopie/méthodes , Adulte , Triamcinolone acétonide/administration et posologie , Triamcinolone acétonide/usage thérapeutique , Résultat thérapeutique , Dilatation/méthodes , Récidive , Sujet âgé , Budésonide/administration et posologie , Budésonide/usage thérapeutique , Qualité de vie , Glucocorticoïdes/administration et posologie , Glucocorticoïdes/usage thérapeutique
3.
Arch Dermatol Res ; 316(7): 368, 2024 Jun 08.
Article de Anglais | MEDLINE | ID: mdl-38850361

RÉSUMÉ

Intralesional corticosteroid injections are a first-line treatment for keloids; yet clinical treatment results are highly variable and often suboptimal. Variation in triamcinolone acetonide (TAC) biodistribution may be an important reason for the variable effects of TAC treatment in keloids. In this exploratory study we investigated the biodistribution of TAC in keloids and normal skin using different drug delivery techniques. Fluorescent-labeled TAC suspension was administered into keloids and normal skin with a hypodermic needle and an electronic pneumatic jet injector. TAC biodistribution was represented by the fluorescent TAC volume and 3D biodistribution shape of TAC, using a 3D-Fluorescence-Imaging Cryomicrotome System. Twenty-one keloid and nine normal skin samples were analyzed. With needle injections, the mean fluorescent TAC volumes were 990 µl ± 479 in keloids and 872 µl ± 227 in normal skin. With the jet injector, the mean fluorescent TAC volumes were 401 µl ± 252 in keloids and 249 µl ± 67 in normal skin. 3D biodistribution shapes of TAC were highly variable in keloids and normal skin. In conclusion, TAC biodistribution in keloids is highly variable for both needle and jet injection. This may partly explain the variable treatment effects of intralesional TAC in keloids. Future research is needed to confirm this preliminary finding and to optimize drug delivery in keloids.


Sujet(s)
Chéloïde , Triamcinolone acétonide , Chéloïde/traitement médicamenteux , Chéloïde/anatomopathologie , Humains , Triamcinolone acétonide/pharmacocinétique , Triamcinolone acétonide/administration et posologie , Adulte , Femelle , Distribution tissulaire , Mâle , Adulte d'âge moyen , Injections intralésionnelles , Peau/métabolisme , Peau/anatomopathologie , Peau/imagerie diagnostique , Cryo-ultramicrotomie/méthodes , Jeune adulte , Imagerie tridimensionnelle , Systèmes de délivrance de médicaments/méthodes
4.
Medicine (Baltimore) ; 103(23): e37584, 2024 Jun 07.
Article de Anglais | MEDLINE | ID: mdl-38847669

RÉSUMÉ

PURPOSE: To evaluate the clinical effects between dexamethasone and triamcinolone acetonide (TA) after phacoemulsification and intraocular lens implantation among cataract patients. METHODS: Pubmed, Embase, and the Cochrane Library were searched for studies published up to August 2020. The primary outcome was intraocular pressure. The secondary outcomes were the logarithm of the minimum angle of resolution (logMAR), anterior chamber cell, and anterior chamber flare. The pooled effect sizes were expressed as weighted mean differences (WMDs) or standardized mean differences (SMDs) of 95% confidence intervals (95% CIs). Cochrane Collaboration risk of bias tool and Newcastle-Ottawa scale criteria were used for the quality assessment of included studies. RESULTS: Seven relevant studies met the inclusion criteria. For the primary outcome, there was no significant difference between TA injection and dexamethasone in comparing intraocular pressure (IOP) (SMD = 0.22, 95% confidence interval [CI] [-0.29, 0.73], P = .408; I²â€…= 86.9%) in the first day after treatment and last day of assessment. For the secondary outcomes, the logMAR (WMD = 0.01, 95% CI [-0.06, 0.08]) and the anterior chamber flare (SMD = 0.08, 95% CI [-0.01, 0.18], P = .087; I²â€…= 0%) showed no differences. However, the amount of anterior chamber cells (SMD = -0.21, 95% CI [-0.42, -0.01], P = .044; I²â€…= 0%) in the TA injection on the first day postoperative was higher than for dexamethasone. After treatment, there was no difference between the 2 groups. CONCLUSIONS: This study supports that there were no differences in IOP, logMAR, and anterior chamber flare between TA injection and dexamethasone among cataract patients. TA injection treatment on the first day showed higher amounts of anterior chamber cells than with dexamethasone.


Sujet(s)
Dexaméthasone , Glucocorticoïdes , Triamcinolone acétonide , Humains , Extraction de cataracte/méthodes , Dexaméthasone/administration et posologie , Dexaméthasone/usage thérapeutique , Glucocorticoïdes/administration et posologie , Glucocorticoïdes/usage thérapeutique , Pression intraoculaire/effets des médicaments et des substances chimiques , Pose d'implant intraoculaire , Phacoémulsification/méthodes , Résultat thérapeutique , Triamcinolone acétonide/administration et posologie , Triamcinolone acétonide/usage thérapeutique
6.
Transl Vis Sci Technol ; 13(6): 13, 2024 Jun 03.
Article de Anglais | MEDLINE | ID: mdl-38899953

RÉSUMÉ

Purpose: To compare gene expression changes following branch retinal vein occlusion (BRVO) in the pig with and without bevacizumab (BEV) and triamcinolone acetonide (TA). Methods: Photothrombotic BRVOs were created in both eyes of four groups of nine pigs (2, 6, 10, and 20 days). In each group, six pigs received intravitreal injections of BEV in one eye and TA in the fellow eye, with three pigs serving as untreated BRVO controls. Three untreated pigs served as healthy controls. Expression of mRNA of vascular endothelial growth factor (VEGF), glial fibrillary acidic protein (GFAP), dystrophin (DMD), potassium inwardly rectifying channel subfamily J member 10 protein (Kir4.1, KCNJ10), aquaporin-4 (AQP4), stromal cell-derived factor-1α (CXCL12), interleukin-6 (IL6), interleukin-8 (IL8), monocyte chemoattractant protein-1 (CCL2), intercellular adhesion molecule 1 (ICAM1), and heat shock factor 1 (HSF1) were analyzed by quantitative reverse-transcription polymerase chain reaction. Retinal VEGF protein levels were characterized by immunohistochemistry. Results: In untreated eyes, BRVO significantly increased expression of GFAP, IL8, CCL2, ICAM1, HSF1, and AQP4. Expression of VEGF, KCNJ10, and CXCL12 was significantly reduced by 6 days post-BRVO, with expression recovering to healthy control levels by day 20. Treatment with BEV or TA significantly increased VEGF, DMD, and IL6 expression compared with untreated BRVO eyes and suppressed BRVO-induced CCL2 and AQP4 upregulation, as well as recovery of KCNJ10 expression, at 10 to 20 days post-BRVO. Conclusions: Inflammation and cellular osmohomeostasis rather than VEGF suppression appear to play important roles in BRVO-induced retinal neurodegeneration, enhanced in both BEV- and TA-treated retinas. Translational Relevance: Inner retinal neurodegeneration seen in this acute model of BRVO appears to be mediated by inflammation and alterations in osmohomeostasis rather than VEGF inhibition, which may have implications for more specific treatment modalities in the acute phase of BRVO.


Sujet(s)
Inhibiteurs de l'angiogenèse , Bévacizumab , Cytokines , Modèles animaux de maladie humaine , Injections intravitréennes , Occlusion veineuse rétinienne , Triamcinolone acétonide , Animaux , Bévacizumab/pharmacologie , Bévacizumab/usage thérapeutique , Triamcinolone acétonide/pharmacologie , Triamcinolone acétonide/administration et posologie , Triamcinolone acétonide/usage thérapeutique , Occlusion veineuse rétinienne/traitement médicamenteux , Occlusion veineuse rétinienne/métabolisme , Inhibiteurs de l'angiogenèse/pharmacologie , Inhibiteurs de l'angiogenèse/usage thérapeutique , Inhibiteurs de l'angiogenèse/administration et posologie , Cytokines/métabolisme , Cytokines/génétique , Suidae , Facteur de croissance endothéliale vasculaire de type A/métabolisme , Facteur de croissance endothéliale vasculaire de type A/génétique , ARN messager/métabolisme , ARN messager/génétique , Glucocorticoïdes/pharmacologie , Glucocorticoïdes/usage thérapeutique , Régulation de l'expression des gènes/effets des médicaments et des substances chimiques , Protéine gliofibrillaire acide/métabolisme , Protéine gliofibrillaire acide/génétique , Canaux potassiques rectifiants entrants
7.
Int Ophthalmol ; 44(1): 249, 2024 Jun 21.
Article de Anglais | MEDLINE | ID: mdl-38907177

RÉSUMÉ

OBJECTIVE: To investigate the macular morphological and visual outcomes of combined idiopathic epiretinal membrane (iERM) removal with triamcinolone acetonide (TA) injection based on consideration of the ectopic inner foveal layer (EIFL) staging scheme. METHODS: Retrospective case-control study. The clinical data of 84 eyes of 84 patients who underwent vitrectomy for iERM between 2018 and 2022 were reviewed. The enrolled subjects were divided into the TA and non-TA groups. Fifty-one eyes received intravitreal TA injection following vitrectomy and ERM peeling (TA group), and 33 were only treated by standard vitrectomy and ERM peeling (non-TA group). Preoperative and postoperative EIFL stages, central foveal thickness (CFT), and best-corrected visual acuity (BCVA) were compared between both groups. RESULTS: After a mean follow-up of 7.69 ± 3.68 months, both groups exhibited significant improvement in EIFL stages (P < 0.01), with no discernible advantage observed in the TA group. The TA and non-TA groups demonstrated improvement in the EIFL stages in 56.86 and 63.64% of eyes, respectively (P = 0.43). The CFT and BCVA significantly improved in both groups at the final visit (P < 0.01). However, CFT in the non-TA group displayed a more significant reduction during the follow-up (P < 0.03). Subgroup analysis revealed no significant differences in postoperative CFT and BCVA between the two groups in cases with or without continuous EIFL (P > 0.10). CONCLUSION: Our findings indicate that combined intravitreal TA injection following ERM removal conferred no significant benefits in alleviating macular thickening or improving visual acuity in iERM.


Sujet(s)
Membrane épirétinienne , Fossette centrale , Glucocorticoïdes , Injections intravitréennes , Tomographie par cohérence optique , Triamcinolone acétonide , Acuité visuelle , Vitrectomie , Humains , Membrane épirétinienne/diagnostic , Membrane épirétinienne/chirurgie , Études rétrospectives , Mâle , Femelle , Tomographie par cohérence optique/méthodes , Glucocorticoïdes/administration et posologie , Fossette centrale/anatomopathologie , Vitrectomie/méthodes , Triamcinolone acétonide/administration et posologie , Études cas-témoins , Sujet âgé , Adulte d'âge moyen , Études de suivi , Résultat thérapeutique
8.
Clin Exp Dent Res ; 10(3): e886, 2024 Jun.
Article de Anglais | MEDLINE | ID: mdl-38798063

RÉSUMÉ

OBJECTIVE: This study evaluates the efficacy of a novel mucoadhesive patch containing Nigella sativa 10% extract compared to triamcinolone 0.1% in alleviating symptoms and reducing lesion severity in patients with erosive-atrophic oral lichen planus. METHODS AND MATERIALS: A pilot study comprising two groups, each with 10 patients, was conducted. The intervention group received mucoadhesive patches containing N. sativa 10% extract, while the control group received triamcinolone acetonide 0.1% patches. Pain and burning intensity, measured through visual analog scale, and lesion severity based on the Thongprasom scale were assessed weekly for 4 weeks. Descriptive records were kept for side effects and patient satisfaction. RESULTS: Pain and burning intensity decreased in both groups throughout the sessions, with the N. sativa group showing a greater reduction than the triamcinolone group. The reduction in burning intensity within each group was significant (p < .001), and there was a significant difference between groups only in the second session (p = .045). The overall difference between groups was not significant (p > .05). Lesion severity also decreased significantly in both groups (p < .001), with a significant difference between groups observed in the third session (p = .043) and overall throughout the study (p = .006). CONCLUSION: The use of N. sativa extract in mucoadhesive patches was as effective as corticosteroids in reducing pain, burning, and lesion severity in patients with oral lichen planus, with N. sativa showing superior results in some sessions. Notably, no significant complications were observed with N. sativa use, making it a promising treatment option for lichen planus.


Sujet(s)
Lichen plan buccal , Nigella sativa , Extraits de plantes , Adulte , Sujet âgé , Femelle , Humains , Mâle , Adulte d'âge moyen , Anti-inflammatoires/administration et posologie , Lichen plan buccal/traitement médicamenteux , Nigella sativa/composition chimique , Mesure de la douleur , Phytothérapie/méthodes , Projets pilotes , Extraits de plantes/administration et posologie , Résultat thérapeutique , Triamcinolone/administration et posologie , Triamcinolone/usage thérapeutique , Triamcinolone acétonide/administration et posologie , Triamcinolone acétonide/usage thérapeutique
10.
J Vet Med Sci ; 86(5): 592-595, 2024 May 25.
Article de Anglais | MEDLINE | ID: mdl-38616122

RÉSUMÉ

In human and veterinary medicine, the treatment of synovial cysts involves medical or surgical approach. When medical treatment is chosen, triamcinolone acetonide is one of the most used drugs. In this case, intracystic triamcinolone was administered for the treatment of a non-infectious elbow synovial cyst in a subadult female Golden eagle (Aquila chrysaetos), unable to fly. The bird was brought to a wildlife rescue center after an aerial fight with a conspecific. After the treatment, no clinically detectable adverse effects were noted and there was no recurrence within two weeks. Given the improvement of the clinical conditions and the recovery of flight ability, the animal was released back into the wild 17 days after administration of the drug.


Sujet(s)
Maladies des oiseaux , Aigles , Kyste synovial , Triamcinolone acétonide , Animaux , Femelle , Triamcinolone acétonide/usage thérapeutique , Triamcinolone acétonide/administration et posologie , Maladies des oiseaux/traitement médicamenteux , Kyste synovial/médecine vétérinaire , Kyste synovial/traitement médicamenteux , Anti-inflammatoires/usage thérapeutique
11.
Kurume Med J ; 70(1.2): 53-60, 2024 Jul 02.
Article de Anglais | MEDLINE | ID: mdl-38508736

RÉSUMÉ

BACKGROUND: Lower gastrointestinal tract stenosis is commonly diagnosed and is typically treated with surgery or endoscopic balloon dilation (EBD). Radial incision and cutting (RIC) is a novel treatment approach that has several benefits compared with EBD and surgery. Although RIC has demonstrated a high technical success rate and has been shown to improve subjective symptoms, previous studies revealed that restenosis after RIC remain unsolved. Herein, we report the design of a prospective, multicenter, single-arm, interventional, phase II trial to evaluate the safety of local triamcinolone acetonide (TA) administration and its feasibility in preventing restenosis after RIC for lower gastrointestinal tract stenosis. METHODS: The major inclusion criteria are age 20-80 years and the presence of benign stenosis in the lower gastrointestinal tract accessible by colonoscope. We will perform RIC followed by local administration of TA to 20 participants. The primary outcome is the safety of local TA administration, which will be assessed by determining the frequency of adverse events of special interest. The secondary outcomes are the technical success rate of RIC, duration of procedure, improvement in subjective symptoms, and duration of hospitalization. The outcomes, improvement in subjective symptoms, and long-term results will be evaluated using descriptive statistics, Student's t-test, and Kaplan-Meier curve, respectively. DISCUSSION: This explorative study will provide useful information regarding the safety of TA administration after RIC, which may contribute to further investigations.


Sujet(s)
Dilatation , Humains , Études prospectives , Sujet âgé , Adulte d'âge moyen , Adulte , Mâle , Femelle , Sujet âgé de 80 ans ou plus , Résultat thérapeutique , Sténose pathologique , Dilatation/effets indésirables , Dilatation/méthodes , Triamcinolone acétonide/administration et posologie , Triamcinolone acétonide/effets indésirables , Triamcinolone acétonide/usage thérapeutique , Jeune adulte , Triamcinolone/administration et posologie , Triamcinolone/usage thérapeutique , Essais cliniques de phase II comme sujet , Études multicentriques comme sujet
12.
Skeletal Radiol ; 53(8): 1573-1582, 2024 Aug.
Article de Anglais | MEDLINE | ID: mdl-38430274

RÉSUMÉ

OBJECTIVE: To assess the clinical impact of diagnostic musculoskeletal (MSK) injections on treatment decision-making in adolescent and adult patients at a children's hospital. MATERIALS AND METHODS: Retrospective study in patients who underwent diagnostic MSK injections by fluoroscopy or ultrasound (US) between 8/2020 and 3/2023 at a children's hospital. Patients received ropivacaine and triamcinolone acetonide at pain site, reporting quantitative FACES pain score prior to, immediately following, and 2-3 days following injection. Impact on patient care was subsequently assessed. RESULTS: A total of 109 diagnostic fluoroscopic or US MSK injection referrals (mean: 17.6 years old) were included, most commonly hip (76.2%), ankle (9.2%), and iliopsoas tendon sheath (8.3%). Pain improvement occurred in 89.0% immediately and 67.9% 2-3 days after MSK injection, with net 84.4% exhibiting improvement based on pain scores and clinical exams. When there was pain improvement at the site of injection, there was a statistically higher incidence of operative intervention or additional therapeutic injections compared with the cohort that did not have symptom improvement (88% versus 35.3%, P < 0.0001). For the 15.6% (N = 17) of referrals that did not have pain improvement, 17.6% (n = 3) ultimately had an operative intervention at a separate site from the diagnostic injection, as an alternative etiology for the pain was found. CONCLUSION: Image-guided MSK injections play an important role in the management of musculoskeletal disorders. 84.4% of referrals experienced symptom relief, improving confidence for treatment decision-making. Importantly, 15.6% of patients were found to have an alternative etiology for symptoms, altering management altogether.


Sujet(s)
Anesthésiques locaux , Hôpitaux pédiatriques , Douleur musculosquelettique , Mesure de la douleur , Échographie interventionnelle , Humains , Adolescent , Femelle , Mâle , Douleur musculosquelettique/traitement médicamenteux , Douleur musculosquelettique/imagerie diagnostique , Études rétrospectives , Échographie interventionnelle/méthodes , Anesthésiques locaux/administration et posologie , Adulte , Radioscopie , Ropivacaïne/administration et posologie , Triamcinolone acétonide/administration et posologie , Enfant , Radiographie interventionnelle/méthodes
14.
Aesthet Surg J ; 44(6): NP411-NP420, 2024 May 15.
Article de Anglais | MEDLINE | ID: mdl-38330289

RÉSUMÉ

BACKGROUND: Implant-based breast reconstruction is associated with increased risk of early infection and late-stage capsular contracture. OBJECTIVES: We evaluated the feasibility of a dual drug-releasing patch that enabled the controlled delivery of antibiotics and immunosuppressants in a temporally and spatially appropriate manner to the implant site. METHODS: The efficacy of a dual drug-releasing patch, which was 3-dimensional-printed (3D-printed) with tissue-derived biomaterial ink, was evaluated in rats with silicone implants. The groups included implant only (n = 10); implant plus bacterial inoculation (n = 14); implant, bacterial inoculation, and patch loaded with gentamycin placed on the ventral side of the implant (n = 10), and implant, bacterial inoculation, and patch loaded with gentamycin and triamcinolone acetonide (n = 9). Histologic and immunohistochemical analyses were performed 8 weeks after implantation. RESULTS: The 2 drugs were sequentially released from the dual drug-releasing patch and exhibited different release profiles. Compared to the animals with bacterial inoculation, those with the antibiotic-only and the dual drug-releasing patch exhibited thinner capsules and lower myofibroblast activity and inflammation, indicating better tissue integration and less foreign body response. These effects were more pronounced with the dual drug-releasing patch than with the antibiotic-only patch. CONCLUSIONS: The 3D-printed dual drug-releasing patch effectively reduced inflammation and capsule formation in a rat model of silicone breast reconstruction. The beneficial effect of the dual drug-releasing patch was better than that of the antibiotic-only patch, indicating its therapeutic potential as a novel approach to preventing capsular contracture while reducing concerns of systemic side effects.


Sujet(s)
Antibactériens , Implants mammaires , Contracture capsulaire péri-prothétique , Impression tridimensionnelle , Animaux , Implants mammaires/effets indésirables , Femelle , Rats , Contracture capsulaire péri-prothétique/prévention et contrôle , Contracture capsulaire péri-prothétique/étiologie , Antibactériens/administration et posologie , Antibactériens/pharmacologie , Gentamicine/administration et posologie , Gels de silicone/administration et posologie , Triamcinolone acétonide/administration et posologie , Rat Sprague-Dawley , Études de faisabilité , Immunosuppresseurs/administration et posologie , Implantation de prothèse mammaire/effets indésirables , Implantation de prothèse mammaire/instrumentation , Implantation de prothèse mammaire/méthodes , Modèles animaux de maladie humaine , Modèles animaux
15.
Clin Pharmacokinet ; 62(9): 1189-1199, 2023 09.
Article de Anglais | MEDLINE | ID: mdl-37598107

RÉSUMÉ

Triamcinolone acetonide is a glucocorticosteroid used in standard clinical practice for its anti-inflammatory properties. Although it can be given via different routes of administration, the intramuscular route is unique compared with other corticosteroids-its effects remain potent over a longer period of time. We summarize the existing literature on the pharmacokinetic and pharmacodynamic mechanisms of intramuscular triamcinolone acetonide (Kenalog®). The fascinating nature of the purported efficacy of triamcinolone acetonide may be attributed to differing binding mechanisms, low solubility in blood, a low renal clearance rate, and various metabolites and other yet defined effects on skin. The enigma of the purported efficacy of triamcinolone acetonide may lie in the fact that it has a unique nature of having a long-term effect on dermatologic disease using a seemingly low dose compared with other routes of administration and other corticosteroids. Possible reasons for this may be binding differences at the intramuscular site, low solubility due to acetonide esters, a slow rate of absorption from the injected site, and a low renal clearance rate. There is still much to be learned about its mechanism of action, which may be of clinical and therapeutic significance.


Sujet(s)
Anti-inflammatoires , Glucocorticoïdes , Triamcinolone acétonide , Triamcinolone acétonide/administration et posologie , Triamcinolone acétonide/pharmacocinétique , Triamcinolone acétonide/pharmacologie , Injections musculaires , Humains , Anti-inflammatoires/administration et posologie , Anti-inflammatoires/pharmacocinétique , Anti-inflammatoires/pharmacologie , Glucocorticoïdes/administration et posologie , Glucocorticoïdes/pharmacocinétique , Glucocorticoïdes/pharmacologie , Débit de filtration glomérulaire
16.
PLoS One ; 17(2): e0263453, 2022.
Article de Anglais | MEDLINE | ID: mdl-35167583

RÉSUMÉ

Keloid scars are characterized by the excessive proliferation of fibroblasts and an imbalance between the production and degradation of collagen, leading to its buildup in the dermis. There is no "gold standard" treatment for this condition, and the recurrence is frequent after surgical procedures removal. In vitro studies have demonstrated that photobiomodulation (PBM) using the blue wavelength reduces the proliferation speed and the number of fibroblasts as well as the expression of TGF-ß. There are no protocols studied and established for the treatment of keloids with blue LED. Therefore, the purpose of this study is to determine the effects of the combination of PBM with blue light and the intralesional administration of the corticoid triamcinolone hexacetonide on the quality of the remaining scar by Vancouver Scar Scale in the postoperative period of keloid surgery. A randomized, controlled, double-blind, clinical trial will be conducted involving two groups: 1) Sham (n = 29): intralesional administration of corticoid (IAC) and sham PBM in the preoperative and postoperative periods of keloid removal surgery; and 2) active PBM combined with IAC (n = 29) in the preoperative and postoperative periods of keloid removal surgery. Transcutaneous PBM will be performed on the keloid region in the preoperative period and on the remaining scar in the postoperative period using blue LED (470 nm, 400 mW, 4J per point on 10 linear points). The patients will answer two questionnaires: one for the assessment of quality of life (Qualifibro-UNIFESP) and one for the assessment of satisfaction with the scar (PSAQ). The team of five plastic surgeons will answer the Vancouver Scar Scale (VSS). All questionnaires will be administered one, three, six, and twelve months postoperatively. The keloids will be molded in silicone prior to the onset of treatment and prior to excision to assess pre-treatment and post-treatment size. The same will be performed for the remaining scar at one, three, six, and twelve months postoperatively. The removed keloid will be submitted to histopathological analysis for the determination of the quantity of fibroblasts, the organization and distribution of collagen (picrosirius staining), and the genic expression of TGF-ß (qPCR). All data will be submitted to statistical analysis. Trial registration: This study is registered in ClinicalTrials.gov (ID: NCT04824612).


Sujet(s)
Hormones corticosurrénaliennes/administration et posologie , Chéloïde/thérapie , Photothérapie de faible intensité/méthodes , Satisfaction des patients/statistiques et données numériques , Qualité de vie/psychologie , Triamcinolone acétonide/analogues et dérivés , Hormones corticosurrénaliennes/pharmacologie , Adulte , Association thérapeutique , Méthode en double aveugle , Femelle , Humains , Injections intralésionnelles , Chéloïde/métabolisme , Chéloïde/psychologie , Mâle , Adulte d'âge moyen , Soins postopératoires , Soins préopératoires , Études prospectives , Facteur de croissance transformant bêta/métabolisme , Résultat thérapeutique , Triamcinolone acétonide/administration et posologie , Triamcinolone acétonide/pharmacologie , Jeune adulte
17.
Drug Deliv ; 29(1): 18-30, 2022 Dec.
Article de Anglais | MEDLINE | ID: mdl-34962228

RÉSUMÉ

Corneal neovascularization is a serious corneal pathological change caused by various factors. The drug delivery system is of great significance for the effective treatment of corneal neovascularization. Herein, we developed and characterized a monolith/hydrogel composite as the triamcinolone acetonide (TA) carrier for curing corneal neovascularization. The composite was prepared by photo-initiated free radical polymerization of multi-methacrylate substituted dodecamine organic molecular cage and post-modified by the sequential photo-initiated free radical polymerization of acrylated gelatin. The globular morphology and structural property of as-prepared composites were evaluated by scanning electron microscopy, Fourier-transform infrared spectroscopy and solid-state cross polarization magic angle spinning carbon-13 nuclear magnetic resonance. Then swelling ratio and the TA loading capacity were investigated then. Compared with gelatin hydrogel, the composites exhibited a decreased swelling ratio and an improved loading capacity. With good biocompatibility, the composite can sustainedly release TA for up to 28 days, and effectively inhibit corneal neovascularization with an alkali burn-induced corneal neovascularization model. Additionally, tandem mass tags-labeled quantitative proteomics were performed to identify differentially expressed proteins between vascularized and devascularized corneas. The Kyoto Encyclopedia of Genes and Genomes enrichment analysis revealed that the inhibition process could be primarily linked to the fibrinolytic system. These results demonstrated the potential of monolith/hydrogel composites as delivery systems in the therapy for biomedical diseases.


Sujet(s)
Néovascularisation cornéenne/anatomopathologie , Vecteurs de médicaments/composition chimique , Hydrogels/composition chimique , Triamcinolone acétonide/administration et posologie , Triamcinolone acétonide/pharmacologie , Animaux , Lignée cellulaire , Cornée , Préparations à action retardée , Modèles animaux de maladie humaine , Relation dose-effet des médicaments , Libération de médicament , Stabilité de médicament , Humains , Mâle , Souris , Souris de lignée BALB C
18.
Eur J Pharm Biopharm ; 170: 52-58, 2022 Jan.
Article de Anglais | MEDLINE | ID: mdl-34864199

RÉSUMÉ

Intratympanically applied treatments are of increasing interest to the otologic community to treat sudden sensorineural hearing loss or vestibular disorders but also to deliver gene therapy agents, or biologics to the inner ear. Further diversion from the middle ear and perilymph to blood circulation and cerebrospinal fluid via the cochlear aqueduct are one of the limiting factors and so far not understood well enough. In this study, intratympanically applied triamcinolone acetonide was determined in cerebrospinal fluid. Additionally, perilymph was sampled through the round window membrane as well as at the lateral semicircular canal to determine drug levels. Of the twenty-one included patients, triamcinolone acetonide was quantifiable in cerebrospinal fluid in 43% at very low levels (range 0 ng/ml-6.2 ng/ml) which did not correlate with perilymph levels. Drug levels at the two different perilymph sampling sites were within a range of 13.5 ng/ml to 1180.0 ng/ml. Results suggest an equal distribution of triamcinolone acetonide to semicircular canals, which might support the use of triamcinolone acetonide as a treatment option for vestibular pathologies such as Menièrés disease. On the other hand, the distribution to cerebrospinal fluid might be limiting current approaches in gene therapy where a central distribution is unwanted.


Sujet(s)
Liquide cérébrospinal/métabolisme , Glucocorticoïdes/administration et posologie , Neurinome de l'acoustique/traitement médicamenteux , Triamcinolone acétonide/administration et posologie , Femelle , Humains , Injection intratympanique , Mâle , Adulte d'âge moyen , Périlymphe/métabolisme
19.
Arch Dermatol Res ; 314(2): 167-182, 2022 Mar.
Article de Anglais | MEDLINE | ID: mdl-33742252

RÉSUMÉ

Alopecia Areata (AA) is a common autoimmune disease, with an unpredictable course and no standard treatment with guaranteed outcome. Intralesional corticosteroids is the most commonly used treatment for patchy AA, but with a common side effect of localized atrophy. Thirty patients with localized AA, with three patches were included in this study. Each alopecic patch in each patient was subjected to treatment by intralesional carbon dioxide injection (carboxy therapy), intralesional corticosteroids (ILC) and a combination of both. Sessions were done every 2 weeks for a total of 12 weeks, followed by a 2-month follow-up period. Evaluation was done at baseline, after treatment and after follow-up, clinically by modified SALT score (a novel modification of the SALT score), dermoscopically (yellow dots, black dots, tapered hair, regrowing hair) and by photography. All treatment regimens resulted in significant improvement of mSALT score and dermoscopic parameters. Comparison of the three treatment modalities revealed a 79.2% hair regrowth following the combined regimen, 69.5% improvement after ILC, and 50% improvement after carboxy therapy, with a statistical difference. The combined regimen also produced the largest significant increase in regrowing hair after treatment. Side effects included temporary pain during injection and relapse in the alopecic patch treated by ILC in one patient. All treatment regimens proved effective for treatment of patchy alopecia areata, with highest efficacy encountered following the combined modality as it caused the greatest and earliest hair regrowth.Study registered in Protocol Registration and Results System (clincaltrials.gov). Registration number: NCT04228029.


Sujet(s)
Pelade/traitement médicamenteux , Anti-inflammatoires/usage thérapeutique , Dioxyde de carbone/usage thérapeutique , Triamcinolone acétonide/usage thérapeutique , Adolescent , Adulte , Pelade/anatomopathologie , Anti-inflammatoires/administration et posologie , Dioxyde de carbone/administration et posologie , Femelle , Humains , Injections intralésionnelles , Mâle , Adulte d'âge moyen , Études prospectives , Résultat thérapeutique , Triamcinolone acétonide/administration et posologie , Jeune adulte
20.
Acta Ophthalmol ; 100(1): e297-e303, 2022 Feb.
Article de Anglais | MEDLINE | ID: mdl-33847066

RÉSUMÉ

PURPOSE: To compare the efficacy of topical nepafenac 0.1% versus intravitreal triamcinolone acetonide (IVTA) at the conclusion of vitrectomy surgery versus no adjuvant therapy (NAT) in improving macular morphology post-operatively in patients undergoing vitrectomy for epiretinal membrane (ERM), as measured by optical coherence tomography (OCT) imaging and best-corrected visual acuity (BCVA). METHODS: Design: Prospective randomized clinical trial Setting: Multi-centre 80 patients scheduled to undergo vitrectomy surgery for idiopathic ERM were randomized to receive either IVTA (4 mg/0.1 cc) at the end of surgery, topical nepafenac sodium 0.1% TID for 1 month post-operation or no adjuvant treatment (NAT). Optical coherence tomography (OCT) imaging, best-corrected visual acuity and intraocular pressure (IOP) were measured before surgery, and 1 and 2 months post-operation. RESULTS: Although all three groups showed reduction in macular thickness post-operation, the NAT group showed the most improvement, with a reduction of 136.18 ± 29.84 µm at two months. There was no statistically significant difference in macular thickness between the groups at each time point, p = 0.158. The NAT group also had the best recovery in BCVA with an improvement of 0.207 logMAR (10.35 letters) at two months post-operation. There was no statistically significant difference in BCVA between the groups, p = 0.606. There was statistically significant difference in the IOP between the three groups, p = 0.04 only at 1-month visit. The IVTA group had the highest rise in average IOP at both 1 and 2 months post-operation (2.72 and 1.58 mmHg, respectively). CONCLUSION: Our study data suggest there was no advantage in the use of topical nepafenac or IVTA for post-vitrectomy ERM surgery.


Sujet(s)
Benzèneacétamides/administration et posologie , Membrane épirétinienne/traitement médicamenteux , Phénylacétates/administration et posologie , Rétine/imagerie diagnostique , Tomographie par cohérence optique/méthodes , Triamcinolone acétonide/administration et posologie , Acuité visuelle , Adulte , Sujet âgé , Sujet âgé de 80 ans ou plus , Anti-inflammatoires non stéroïdiens/administration et posologie , Membrane épirétinienne/diagnostic , Femelle , Études de suivi , Glucocorticoïdes/administration et posologie , Humains , Injections intravitréennes , Mâle , Adulte d'âge moyen , Études prospectives , Résultat thérapeutique
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