Oxidative Damage to BV2 Cells by Trichloroacetic Acid: Protective Role of Boron via the p53 Pathway / 生物医学与环境科学（英文）

This study aimed to investigate the neurotoxicity induced by trichloroacetic acid (TCA) and the possible protective mechanisms of boron (B). Mouse BV2 cells were treated with TCA (0, 0.39, 0.78, 1.56, 3.12, 6.25, or 12.5 mmol/L) and B (0, 7.8, 15.6, 31.25, 62.5, 125, 500, or 1,000 mmol/L) for 3 h and 24 h, respectively. Then, reactive oxygen species, and supernatant proinflammatory cytokine and protein levels were analyzed after 24 h of combined exposure. Beyond the dose-dependent decrease in the cellular viability, it clearly increased after B supplementation ( P < 0.05). Moreover, B decreased oxidative damage, and significantly down-regulated IL-6 levels and up-regulated TNF-β production ( P < 0.05). B also decreased apoptosis via the p53 pathway. The present findings indicated that TCA may induce oxidative damage, whereas B mitigates these adverse effects by decreasing cell apoptosis.

Comparison of protein precipitation methods for sample preparation prior to proteomic analysis of Chinese hamster ovary cell homogenates

BACKGROUND: Chinese hamster ovary (CHO) cells are the workhorse for obtaining recombinant proteins. Proteomic studies of these cells intend to understand cell biology and obtain more productive and robust cell lines for therapeutic protein production in the pharmaceutical industry. Because of the great importance of precipitation methods for the processing of samples in proteomics, the acetone, methanol-chloroform (M/C), and trichloroacetic acid (TCA)-acetone protocols were compared for CHO cells in terms of protein recovery, band pattern resolution, and presence on SDS-PAGE. RESULTS: Higher recovery and similar band profile with cellular homogenates were obtained using acetone precipitation with ultrasonic bath cycles (104.18 ± 2.67%) or NaOH addition (103.12 ± 5.74%), compared to the other two protocols tested. TCA-acetone precipitates were difficult to solubilize, which negatively influenced recovery percentage (77.91 ± 8.79%) and band presence. M/C with ultrasonic homogenization showed an intermediate recovery between the other two protocols (94.22 ± 4.86%) without affecting protein pattern on SDS-PAGE. These precipitation methods affected the recovery of low MW proteins (< 15 kDa). CONCLUSIONS: These results help in the processing of samples of CHO cells for their proteomic study by means of an easily accessible, fast protocol, with an almost complete recovery of cellular proteins and the capture of the original complexity of the cellular composition. Acetone protocol could be incorporated to sample-preparation workflows in a straightforward manner and can probably be applied to other mammalian cell lines as well.

Queratosis folicular invertida del conducto auditivo externo: Una patología benigna poco frecuente y de localización inusual / INVERTED FOLLICULAR KERATOSIS OF THE EXTERNAL AUDITORY CANAL

La queratosis folicular invertida es una neoplasia benigna poco frecuente originada en el epitelio folicular a nivel del infundíbulo. Si bien no posee una clínica característica ni patognomónica, suele presentarse como una lesión solitaria, asintomática, de crecimiento lento, en la cara. El diagnóstico de certeza se realiza con el estudio histopatológico, que evidencia una proliferación de células basaloides y de células escamosas queratósicas con remolinos escamosos, que se extienden a la dermis. El tratamiento de elección es la extirpación quirúrgica, con buen pronóstico y escasa tendencia a la recurrencia. La localización en conducto auditivo externo es extremadamente infrecuente (en la literatura revisada hemos encontrado sólo tres casos comunicados) y representa un desafío tanto diagnóstico como terapéutico. Se presenta un paciente con una queratosis folicular invertida localizada en conducto auditivo externo izquierdo de 5 años de evolución que comprometía significativamente su calidad de vida por la sintomatología (dolor, otorrea, hipoacusia) y que evolucionó satisfactoriamente con el tratamiento instaurado (extirpación quirúrgica y posterior topicación de la zona con ácido tricloroacético 50%)

Inverted follicular keratosis is a rare benign neoplasm originating from the infundibulum of the follicular epithelium. Although it does not have a characteristic or pathognomonic clinic, it usually presents as a solitary, asymptomatic, slow-growing lesion on the face. The certain diagnosis is made with the histopathological study, which shows a proliferation of basaloid cells and squamous keratotic cells with squamous eddies, which extend to the dermis. The treatment of choice is surgical removal, with a good prognosis and little tendency to recur. Localization in the external auditory canal is extremely rare (in the reviewed literature we have found only three reported cases) and represents both a diagnostic and therapeutic challenge. We present a patient with an inverted follicular keratosis located in the left external auditory canal of 5 years of evolution that significantly compromised his quality of life due to the symptoms (pain, otorrhea, hearing loss) and that evolved satisfactorily with the established treatment (surgical excision and subsequent topication of the area with 50% trichloroacetic acid).

Chemical Regeneration of Wound Defects: Relevance to the Canine Palatal Mucosa and Cell Cycle Up-Regulation in Human Gingival Fibroblasts

BACKGROUND: Trichloroacetic acid (TCA) is an agent widely applied in dermatology for skin regeneration. To test whether TCA can offer an advantage for the regeneration of oral soft tissue defects, the cellular events following TCA application were explored in vitro and its influence on the oral soft tissue wound healing was evaluated in a canine palate model.METHODS: The cytotoxicity and growth factor gene expression in human gingival fibroblasts were tested in vitro following the application of TCA at four concentrations (0.005%, 0.05%, 0.5% and 1%) with different time intervals (0, 3, 9 and 21 h). One concentration of TCA was selected to screen the genes differentially expressed using DNA microarray and the associated pathways were explored. TCA was injected in open wound defects of the palatal mucosa from beagle dogs (n = 3) to monitor their healing and regeneration up to day 16-post-administration.RESULTS: While the 0.5–1% concentration induced the cytoxicity, a significantly higher expression of growth factor genes was observed after 3 and 9 h following the 0.5% TCA application in comparison to other groups. DNA microarray analysis in 0.5% TCA group showed 417 genes with a significant 1.5-fold differential expression, involving pathways of cell cycle, FoxO signaling, p53 signaling, ubiquitin mediated proteolysis and cAMP signaling. In vivo results showed a faster reepithelialization of TCA-treated wounds as compared to spontaneous healingCONCLUSION: TCA promoted the healing and regeneration of oral soft tissue wound defects by up-regulating the cell cycle progression, cell growth, and cell viability, particularly at a concentration of 0.5%.

Tumor de Buschke-Löwenstein. presentación de un caso / Tumor de Buschke-Löwenstein. apresentação de um caso / uschke-Löwenstein tumor. case report

Se presentó un paciente masculino de 68 años, que acudió a consulta de Dermatología por presentar lesiones vegetantes en coliflor en región inguinal izquierda, pubis y perineales, de 10 años de evolución y nunca tratadas. El tumor de Buschke-Löwenstein o condiloma acuminado gigante es una tumoración epitelial benigna, causada por el virus del papiloma humano, trasmisible sexualmente, en raros casos puede malignizar. Se realizó escisión quirúrgica y estudio histopatológico de la lesión inguinal, las restantes lesiones fueron eliminadas con ácido tricloroacético, tratamiento tópico, logrando regresión total de las mismas y se le administró levamisol, inmunomodulador sistémico. La evolución posquirúrgica fue satisfactoria(AU)

A male patient of 68 years was presented who consulted Dermatology to present vegetating and cauliflower lesions in the left inguinal, pubic and perineal region, 10 years of evolution and never treated. Tumor of Buschke-Löwensteinor giant condyloma is a benign epithelial tumor is caused by the human papillomavirus, sexually transmitted and in rare cases can become it in malignant. Surgical excision and histopathological examination of the inguinal lesion was done, the remaining lesions were removed with trichloroacetic acid, topical treatment, achieving complete regression thereof and administered levamisole and systemic immunomodulator. The postoperative course was satisfactory(AU)

Paciente do sexo masculino, 68 anos, apresentou-se aoServiço de Dermatologiadevido a lesões vegetantes nacouve-flor naregião inguinal esquerda, púbis e períneo, comduração de 10 anose nunca tratadas. O tumor de Buschke-Löwenstein ou o condiloma acuminado gigante é um tumor epitelial benigno, causado pelo papilomavírus humano sexualmente transmissível, podendo, em casos raros, malignizar. Excisãocirúrgica e estudo histopatológico da lesão inguinal foram realizados, as lesõ es remanescentesforam eliminadas com ácido tricloroacético, tratamento tópico, obtendoregressão total das mesmas e foi administrado levamisol, imunomodulador sistêmico. A evoluçãopós-operatória foi satisfatória(AU)

A Case of Second Branchial Cleft Sinus with Double Opening from the Tonsil / 대한이비인후과학회지

Second branchial cleft anomaly is the most common type of branchial anomalies. Tonsillitis can cause inflammation or infection through the cleft tract. We present an extremely rare case of a 15-year-old female with a tonsil sinus that caused a deep neck infection of the neck, showing a double-sinus opening. The patient was successfully treated with trichloroacetic acid chemocauterization.

The Combination Therapy of Chemocauterization and Electrocauterization on Fourth Branchial Cleft Cyst

BACKGROUND AND OBJECTIVES: Fourth branchial cleft cyst is a rare congenital anomaly which cause a recurrent cervical abscess. Complete excision of fourth branchial cleft cyst is difficult because of a complicated fistula tract. In addition to attempting chemocauterization with trichloroacetic acid (TCA) to avoid surgical complications, authors performed an electrocauterization to close internal opening of pyriform sinus. MATERIALS AND METHODS: We reviewed ten patients of fourth branchial cleft cyst underwent TCA chemocauterization and electrocauterization simultaneously. Clinical characteristics including patient informations, medical records, treatment results were analyzed retrospectively. RESULTS: Interval time until diagnosed with fourth branchial cleft cyst was variable from several days to decades. Five patients had a history of incision and drainage. Mean follow up period was 36.1 months and all patients were treated with no recurrence. CONCLUSION: TCA chemocauterization with electrocauterization can be a effective choice to reduce recurrence rate and ensure safety of patients of fourth branchial cleft cyst.

Infección genital masculina por virus de papiloma humano / Male genital infection by human papiloma virus

El virus del papiloma humano (VPH) es una de las enfermedades de transmisión sexual más comunes. Puede afectar tanto el aparato genital masculino y femenino, como también el área perianal, ano, y diversas áreas de cabeza y cuello y otorrinolaringológicas, ya sea como lesiones benignas o como promotor de lesiones malignas. Las lesiones benignas por VPH en genitales masculinos se caracterizan fundamentalmente por la aparición de lesiones verrugosas, aunque también puede manifestarse mediante lesiones planas atípicas. En algunos casos hay ausencia de lesiones macroscópicamente visibles que pueden hacerse evidentes con la prueba de ácido acético. La biopsia de la lesión, su evaluación anatomopatológica y, sobre todo, la determinación de la existencia y el tipo de virus involucrado mediante PCR (reacción en cadena de la polimerasa) permiten confirmar el diagnóstico. En algunas ocasiones es necesario realizar una cistoscopia para diagnosticar lesiones intrauretrales y vesicales. Los tratamientos propuestos son muy variados y de eficacia dispar, desde las topicaciones y la electrocirugía o la criocirugía, hasta el empleo de la tecnología láser. La prevención con el uso de protección durante el acto sexual así como la educación sexual son fundamentales. En los últimos 10 años se ha implementado el uso de la vacuna para el VPH en niñas con el fin de disminuir la incidencia de lesiones de alto grado y de cáncer de cuello uterino, pero su indicación en varones es menos clara y aún no ha sido consensuada. (AU)

Human papiloma virus (HPV) is one of the most common sexual transmitted diseases. It can affect the male genitalia, as well as the perianal and anal regions and multiple areas of the head and neck and otorhinolaryngological structures, as benign lesiones or as a promoter of malignant lesions. Benign male genitalia lesions are characterized mainly by verrucous lesions, although flat atypical lesions can be found, as well as the abscence of macroscopic visible lesions that in some cases can become evident using the acetic acid test. Lesion biopsy, its histological evaluation, and the determination of the existence and type of virus using PCR (Polymerase Chain Reaction) can confirm the diagnosis. In some cases is necessary to do a cistoscopy to diagnose intraurethral and vesical lesions. Proposed treatments are varied and with a wide range of efficacy, from topications to electro or cryosurgery, and the use of laser technology. Sexual education and the use of sexual protection are essential in prevention. In the last 10 years the use of VPH vaccine in girls was widely spread, in order to decrease the incidence of high grade lesions and cervix cancer. Its indication in male patients is less clear and not yet consented among specialists. (AU)

Validation of an HPLC-UV method for the identification and quantification of bioactive amines in chicken meat / Validação de metodologia por HPLC/UV para identificação e quantificação de aminas bioativas em carne de frango de corte

A high-performance liquid chromatography with ultraviolet detection (HPLC-UV) method was validated for the study of bioactive amines in chicken meat. A gradient elution system with an ultraviolet detector was used after extraction with trichloroacetic acid and pre-column derivatization with dansyl chloride. Putrescine, cadaverine, histamine, tyramine, spermidine, and spermine standards were used for the evaluation of the following performance parameters: selectivity, linearity, precision, recovery, limits of detection, limits of quantification and ruggedness. The results indicated excellent selectivity, separation of all amines, a coefficient of determination greater than 0.99 and recovery from 92.25 to 102.25% at the concentration of 47.2mg.kg-1, with a limit of detection at 0.3mg.kg-1 and a limit of quantification at 0.9mg.kg-1 for all amines, with the exception of histamine, which exhibited the limit of quantification, of 1mg.kg-1. In conclusion, the performance parameters demonstrated adequacy of the method for the detection and quantification of bioactive amines in chicken meat.(AU)

Um método de cromatografia líquida de alta eficiência (CLAE) para pesquisa de aminas bioativas em carne de frango foi validado. Foi utilizado um sistema de gradiente de eluição com detector ultravioleta, após extração com ácido tricloroacético e derivação pré-coluna com cloreto de dansila. Os padrões de putrescina, cadaverina, histamina, tiramina, espermidina e espermina foram utilizados para avaliação dos seguintes parâmetros de desempenho: seletividade, linearidade, precisão, recuperação, limites de detecção, limites de quantificação e robustez. Os resultados mostraram excelente seletividade e separação de todas as aminas, coeficiente de determinação superior a 0,99, recuperação entre 92,25 e 105,25% na concentração 47,2mg.kg-1, limites de detecção de 0,3mg.kg-1 e limite de quantificação de 0,9mg.kg-1 para todas as aminas, com exceção da histamina, que apresentou o limite de quantificação mais alto, de 1mg.kg-1. Foi concluído que os parâmetros de desempenho demonstraram adequação do método para detecção e quantificação de aminas bioativas em carne de frango.(AU)

The pH-dependent effects of combining ethanol with fluoride on proton permeability in Streptococcus mutans / 대한구강보건학회지

OBJECTIVES: The aim of this research was to determine the pH-dependent changes in F-ATPase activity and proton fluxes in Streptococcus mutans (S. mutans) as induced by varying the concentration of fluoride ±10 mM (0.058% (v/v)) ethanol. METHODS: S. mutans UA159 was grown in Brain Heart Infusion medium at pH 4.8, 6.8, or 8.8. The F-ATPase assay was initiated by the addition of ATP, and stopped by adding 10% trichloroacetic acid. For the proton flux assay, bacterial suspensions were titrated to pH 4.6 with 0.5 M HCl, and then 0.5 M HCl was added to decrease the pH values in units of approximately 0.4 pH. The subsequent increase in pH was monitored using a glass electrode. To disrupt the cell membrane, 10% (v/v) butanol was added to the suspensions after 80 minutes. RESULTS: At all pH levels, fluoride ±10 mM ethanol not only decreased F-ATPase activity but also increased the proton permeability of S. mutans. The largest effects were observed at pH 4.8. Ethanol enhanced these effects only at pH 4.8. CONCLUSIONS: A very low concentration of ethanol enhanced the action of fluoride on F-ATPase activity and the proton permeability in S. mutans at acidic pH levels. We expect that low concentrations of ethanol may be used together with fluoride and/or other anticaries agents to develop more effective anticaries preparations.

Tratamiento de las verrugas genitales: una actualización / Genital wart treatment: an update

La infección por el Virus del Papiloma Humano es una afección altamente prevalente a nivel mundial y una de sus consecuencias es la verruga genital externa o condiloma genital. El tratamiento de estas lesiones ha sido tradicionalmente difícil, debido a la alta recurrencia de las lesiones. Se revisan los aspectos más novedosos del tratamiento de las verrugas genitales. Las sinecatequinas y una nueva formulación de Imiquimod al 3,75% resaltan como las terapéuticas más novedosas, mientras que la terapia fotodinámica carece de evidencia científica adecuada como para recomendar su uso rutinario. Las vacunas profilácticas y terapéuticas parecen poseer un gran potencial pero aún se encuentran en fases iniciales de investigación. Es deseable estudios con un mayor número de pacientes y un seguimiento más prolongado, que permita una comparación directa de la efectividad entre las diferentes técnicas terapéuticas a corto y largo plazo.

Human Papillomavirus infection is a highly prevalent condition worldwide whose frequent consequence is the external genital wart or genital condyloma. The treatment for this condition has been traditionally difficult due to the recurrence of the lesions. The most innovative aspects of the treatment of genital wart, are reviewed. The sinecatechins and a new formulation of Imiquimod 3.75% stand out as the most innovative therapeutic, while photodynamic therapy lacks adequate scientific evidence to recommend its routine use. The prophylactic and therapeutic vaccines seem to have great potential but are still in early stages of research. Studies should be conducted with larger patient samples and longer follow-ups to allow comparison of the effectiveness among the different therapeutic techniques in the short and long term.

Percutaneous collagen induction using dermaroller versus 80% trichloroacetic acid in the treatment of atrophic post acne scars: a comparative study

Background: Percutaneous collagen induction [PCI] promotes removal of damaged collagen and induces more collagen immediately under the epidermis. The chemical reconstruction of skin scars [CROSS] method is a focal application of full-concentration trichloroacetic acid [TCA] to atrophic acne scars. The CROSS method has the advantage of reconstructing acne scars by increasing dermal thickening and collagen production

Objective: To compare the safety and efficacy of PCI and the 80% TCA CROSS method for the treatment of atrophic post acne scars

Patients and Methods: Thirty four participants were randomly divided into two groups; group 1[19 patients] underwent four sessions [4 weeks apart] PCI, and group 2 [15 patients] underwent five sessions [2 weeks apart] of 80% TCA CROSS. The two groups were compared regarding photo evaluation, patient satisfaction and adverse effects

Results: All patients improved in both groups. However, the mean percentage of improvement was statistically significantly higher in the first group treated by the dermaroller [59.89%] than in the second group treated by TCA CROSS 80% [42.73%] [p = 0.025] but there was no statistical significant difference regarding the patient satisfaction

Conclusions: PCI and 80% TCA CROSS were effective in the treatment of atrophic acne scars with superior results were in favor of dermaroller

Comparative study of dermaroller therapy versus trichloroacetic acid CROSS for the treatment of atrophic acne scars

To compare the efficacy and safety of dermaroller treatment with that of TCA CROSS in acne scars. We selected thirty patients of atrophic acne scars for the study. Group I patients underwent four sessions of dermaroller therapy four weeks apart. Group II were treated with four sessions of TCA CROSS technique four weeks apart. After four sessions of dermaroller and TCA CROSS each, marked improvement was seen in 40% patients in the dermaroller group and in 60% patients in the CROSS group. Moderate improvement was seen in 40% patients in dermaroller group and in 26.6% patients in the CROSS group and mild improvement was seen in 20% patients in dermaroller group and 13.3% patients in the CROSS group. Side effects were mild and infrequent in both groups. Both treatments are equally effective and safe for the treatment of acne scars

A Case of Piriform Sinus Fistula Complicated with Suppurative Thyroiditis Treated with Chemocauterization Using Trichloroacetic Acid / 계명의대학술지

A 23 months-old girl visited the hospital because of fever and left neck mass. She was diagnosed as acute suppurative thyroiditis with piriform sinus fistula. Thyroid sonography showed perithyroidal abscess formation and thyroid scan showed decreased uptake of Tc-99m pertechnate of both thyroid glands. Magnetic resonance imaging of neck showed abscess cavity extending to the swollen left thyroid gland. And there was tiny fistula between thyroid and piriform sinus in the barium esophagogram. Streptococcus gordonii was isolated on needle aspiration culture. We report a case of piriform sinus fistula of the neck complicated with suppurative thyroiditis. The fistula was treated with chemocauterization using trichloroacetic acid.

Opções terapêuticas na neoplasia intraepitelial vaginal: revisão de literatura / Therapeutic modalities for vaginal intraepitelial neoplasia: literature review

A neoplasia intraepitelial de vagina (NIVA) é uma condição pré-maligna rara do epitélio vaginal, sua incidência corresponde a 0,2 casos por 100.000 mulheres, classifica-se em NIVA I, II, III esta última tem um potencial de invasão de 9 a 12%. O diagnóstico é feito pela citologia, colposcopia, histopatologia. Todos os métodos terapêuticos tem uma taxa razoável de sucesso e a taxa de recorrência varia entre 10 e 42%. O tratamento pode ser: cirúrgico, ablativo, radioterápico, clínico e expectante. O excisional tem preferência por fornecer peça para análise histopatológica excluindo a doença invasiva apresentando as melhores taxas de sucesso entre 66% a 83% . A ablação é indicada quando a suspeita de invasão foi afastada e é a modalidade de eleição nas mulheres jovens, a eficácia varia entre 69 a 87%. A radiação tem uma taxa de sucesso entre 69 a 100%; porém, as complicações giram em torno de 36%. Pela sua praticidade o tratamento feito com os agentes tópicos tem ganhado espaço terapêutico na abordagem da NIVA. Não existe evidência científica quanto a melhor forma e o tempo de seguimento das mulheres com NIVA. Qualquer que seja a opção de tratamento utilizada um seguimento longo deve ser preconizado.(AU)

Vaginal intraepithelial neoplasia (VAIN) is an uncommon premalignant condition of the vaginal epithelium, its incidence is found to be 0.2 per 100.000 women, this condition is classificated in VAIN I, II and III, the lifetime risk of transformation to invasive carcinoma has been reported as 9 to 12%. The diagnosis was done by cytology, colposcopy and histology. All the therapeutics modalities have a successful cure rate and the recurrence ranges are between 10 to 42%. The treatment modalities are: excisional, ablative, radiotherapic, clinical and expectante. Excisional has preference as it could exclude invasion disease and has the best success rate, 66 to 83%. Ablation has preference in young women with no suspect of invasion, with efficacy ranging between 69 to 87%. The cure rate of radiotherapy is high as 69 to 100% but this modality has 36% morbidity rate. Treatment with topical agents constitutes a promising option in VAIN management. There is no scientific evidence of what kind follow-up is better. Whatever treatment modality is used long-term follow-up is essential.(AU)

Efficacy of Trichloroacetic Acid in Patients with Toenail Onychomycosis: Pilot Study with 14 Patients / 대한의진균학회지

BACKGROUND: Various methods have been employed for treatment of onychomycosis. These methods can be categorized as topical, oral, or device-related. Among them, oral therapies have been regarded as the gold standard for treatment. However, the efficacy of oral therapies on onychomycosis remains limited and safety may be an issue, leaving many patients in need of alternative treatments. As an alternative treatment for onychomycosis, topical therapies are under investigation with great interest. OBJECTIVE: We conducted an investigation on the efficacy of trichloroacetic acid (TCA) as a new therapeutic option in treatment of onychomycosis. METHODS: Fourteen patients with onychomycosis in both great toenails, which was confirmed by fungal examination, were enrolled. About 0.1 ml of 100% TCA solution was applied on one great toenail of the patients eight times at an interval of one week. The other great toenail of the patients was treated with vehicle. RESULTS: At the end of the treatment period, clinical improvement of TCA-treated great toenails with onychomycosis was observed in eleven out of 14 patients. By contrast, no clinical improvement was observed in vehicle-treated great toenails with onychomycosis. Irritant contact dermatitis of the periungual nail folds occurred in 29% as an adverse effect. CONCLUSIONS: Topical solution of TCA may become a new therapeutic option for treatment of patients with onychomycosis who desire alternatives to oral antifungal agents.

A Comparative Study of the Efficacy and Safety of 100% TCA CROSS and Phenol CROSS for Atrophic Acne Scarring / 대한피부과학회지

BACKGROUND: Atrophic acne scars have been treated using various modalities. The CROSS (Chemical Reconstruction of Skin Scars) technique using 100% TCA has the advantage of reconstructing acne scars by focusing on dermal thickening and collagen production. However, the phenol CROSS technique is not widely used for acne scarring. OBJECTIVE: The purpose of this study was to evaluate the clinical effectiveness and safety of 100% TCA CROSS and phenol CROSS in the treatment of facial atrophic acne scars. METHODS: Twenty-four participants were randomly and equally divided into 2 groups: group 1 received 2 sessions (8 weeks apart) of 100% TCA CROSS, while group 2 received 2 sessions (8 weeks apart) of phenol CROSS. The severity of atrophic acne scarring and treatment efficacies were evaluated by standardized photography, patient satisfaction, physician global assessment, and the ECCA grading scale. Side effects were assessed at the 8- and 20-week visits. RESULTS: At the 0-, 8-, and 20-week visits, both groups showed an acceptable improvement in patient satisfaction and physician global assessment. ECCA grading scale scores improved by a mean of 22.2% (p<0.05) in group 1 and 19.1% (p<0.05) in group 2. The between-group difference in the degree of ECCA score improvement was not statistically significant (p=0.392). Complications such as pain, crust, postcrust erythema, postcrust dryness, and postinflammatory hyperpigmentation were observed in both treatment groups. However, no severe side effects occurred in either group. CONCLUSION: Both 100% TCA CROSS and phenol CROSS are effective treatment modalities for atrophic acne scarring without significant side effects.

Refractory acute suppurative thyroiditis secondary to pyriform sinus fistula

Acute suppurative thyroiditis is a rare disease because the thyroid gland is remarkably resistant to infection. We present a 2-year-old girl with refractory acute suppurative thyroiditis due to a pyriform sinus fistula (PSF). She complained of fever and painful anterior neck swelling. Her condition did not completely improved by multiple parenteral antibiotics along with incision and drainage. Barium esophagogram to detect PSF demonstrated no specific finding. Computed tomography scan showed air bubble superior to the left thyroid gland which indicated a possible fistula connected to the pyriform sinus. An intraoperative laryngoscopy revealed a 2-mm-sized fistula opening. The fistula was successfully treated by chemocauterization with trichloroacetic acid.

Using 80% trichloroacetic acid in the treatment of ingrown toenails / Acido Tricloroacetico a 80% no tratamento da onicocriptose

BACKGROUND: Ingrown nails are a very common problem. There are different stages of disease and diverse therapeutic options. Phenol and sodium hydroxide are commonly used agents for chemical matricectomy but both frequently entail excessive healing times. OBJECTIVE: This prospective study aimed mainly to evaluate the efficacy of partial nail avulsion and selective chemical cauterization of the matrix using 80% TCA in the treatment of the ingrowing nail. METHODS: One-hundred-and-thirty-three patients with 197 ingrown toenails were included in this study. Preoperatively, we tried to find predisposing factors to the disease. In the postoperative period, patients were evaluated for potential complications at days 3, 30, 180, 270 and 360. Pain was measured before surgery, as well as 24 hours and 72 hours after surgery. RESULTS: There were only 3 cases (out of 197) of ingrown nail recurrence. Preoperatively, we found the presence of drainage in 82% of patients, which, following the first visit after surgery, was reduced to 19%. Persistent granulation tissue was found in 3% of the patients (versus 75% prior to surgery). The most frequent predisposing factors for the ingrown nail were excessive trimming of the lateral nail plate (63%), plantar hyperhidrosis (58%) and heavy nail folds (39%). Pain was substantially reduced after surgery. CONCLUSION: It is assumed that chemical procedures for the ingrown toenail are associated with delayed healing times but our results demonstrated quick recovery. Using 80% TCA for selective matricectomy in the ingrown toenail is an effective, quick and easy method. .

FUNDAMENTO: A unha encravada é uma patologia muito frequente. A doença engloba diferentes estadios existindo diferentes soluções terapêuticas. O fenol e o hidróxido de sódio são largamente utilizados na matricetomia química porém ambos cursam com longos tempos de cura. OBJETIVO: O principal objectivo deste estudo prospectivo foi avaliar a eficácia da mactricectomia com ácido tricloroacético a 80% no tratamento da unha encravada. MÉTODOS: Foram incluídos no estudo 133 doentes com 197 unhas encravadas. Factores predisponentes foram avaliados pré-operatoriamente. No período pós-operatório os doentes foram avaliados para potenciais complicações ao dia 3, 30, 180, 270 e 360. A dor foi avaliada antes da cirurgia, 24 horas e 72 horas depois da cirurgia. RESULTADOS: Ocorreram apenas 3 (em 197) casos de recorrência da unha encravada. Antes da cirurgia registou-se exsudação em 82% dos doentes sendo que na primeira visita após a cirurgia este número foi reduzido para 19%. Observou-se ainda tecido de granulação persistente em 3% dos doentes (versus 75% antes da cirurgia). Os factores predisponentes mais frequentemente encontrados para unha encravada foram o corte excessivo da porção lateral da placa ungueal (63%), hiperhidrose plantar (58%) e pregas ungueais espessadas (39%). A dor teve uma redução dramática após a cirurgia. CONCLUSÃO: É assumido que os procedimentos químicos para a unha encravada estão associados com longos tempos de cura mas os nossos resultados mostraram uma rápida recuperação. No tratamento da unha encravada a matricectomia parcial com ácido tricloroacético a 80% é um método rápido, eficaz e de fácil execução. .

Tratamento de cistos conjuntivais em cavidade anoftálmica com injeção intralesional de ácido tricloroacético (ATA) a 25% / Treatment of conjunctival cysts in anophthalmic socket with intralesional injection of trichloroacetic acid (ATA) 25%

Cistos conjuntivais em cavidades anoftálmicas podem ter implicações funcionais e estéticas negativas para os pacientes. Dentre as opções terapêuticas disponíveis, o uso do ácido tricloroacético é relativamente recente. Os casos relatados apresentaram boa evolução após 30 dias do tratamento, sendo bem tolerado pelos pacientes e possibilitando maior preservação de tecido conjuntival...

Conjunctival cysts in anophthalmic socket may have functional and aesthetic implications for the patients.Among the available treatment options, the use of trichloroacetic acid is relatively recent. Our reported cases showed a good outcome after 30 days of treatment, that was well tolerated by patients, with greater conjunctival tissue preservation...