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1.
Gan To Kagaku Ryoho ; 48(13): 1801-1803, 2021 Dec.
Artigo em Japonês | MEDLINE | ID: mdl-35046335

RESUMO

An 89-year-old woman presented to our clinic with a complaint of a wound in the left nipple. The pathological diagnosis via skin biopsy revealed adenocarcinoma. A physical examination, mammography, ultrasonography, and CT scan revealed a mass in the left nipple. However, a definite diagnosis could not be established by skin biopsy. Left breast-conserving surgery and sentinel lymph node biopsy were performed for diagnosis and treatment. Histological examination revealed a scirrhous type invasive ductal carcinoma in the left nipple and areola with skin invasion and lymph node metastasis. Radiation and hormone therapy were used as adjuvant therapy. She is alive with no local recurrence for 5 months post surgery. Since ductal carcinoma of the nipple is uncommon, we present this case report along with a review of the relevant literature.


Assuntos
Neoplasias da Mama , Carcinoma Ductal de Mama , Idoso de 80 Anos ou mais , Neoplasias da Mama/cirurgia , Carcinoma Ductal de Mama/cirurgia , Feminino , Humanos , Mamografia , Mamilos/cirurgia , Biópsia de Linfonodo Sentinela
2.
Surg Today ; 50(10): 1308-1313, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-32350622

RESUMO

Indocyanine green (ICG) fluorescence has been used effectively in imaging for locating hepatic tumors and evaluating hepatic segmentation. We report our initial experience of performing hepatic resection using the novel cart-based ICG fluorescence device LIGHTVISION®. This device has several promising features, including the fact that there is no need to switch off the room light, it has hands-free operability, and it can be located away from the workspace to facilitate a good field of vision. We used the LIGHTVISION® for 15 patients and detected 59 nodules (86.8%) in a total of 68 tumors in the resected specimens during surgery. The LIGHTVISION® was used to identify the hepatic segments in ten patients, and the boundaries of the segment were clearly visualized on the liver surface on fluorescent images in all patients. All tumors were resected with surgical margins. Thus, the LIGHTVISION® appears to be very useful for navigation in liver surgery.


Assuntos
Hepatectomia/instrumentação , Verde de Indocianina , Neoplasias Hepáticas/diagnóstico por imagem , Neoplasias Hepáticas/cirurgia , Fígado/diagnóstico por imagem , Fígado/cirurgia , Imagem Óptica/instrumentação , Cirurgia Assistida por Computador/instrumentação , Idoso , Idoso de 80 Anos ou mais , Feminino , Hepatectomia/métodos , Humanos , Fígado/patologia , Neoplasias Hepáticas/patologia , Masculino , Margens de Excisão , Pessoa de Meia-Idade , Resultado do Tratamento
3.
Gan To Kagaku Ryoho ; 46(11): 1779-1781, 2019 Nov.
Artigo em Japonês | MEDLINE | ID: mdl-31748492

RESUMO

An 83-year-old woman visited our hospital with a mass on her right breast mass. Breast ultrasonography revealed a tumorous lesion approximately 30mm in diameter in the right E region. Fibrous tumor was suspected from core needle biopsy. Since surgery for definite diagnosis was not desired, she was followed. Seven months after the first visit, skin redness, pain, and rapid increase in tumor size was consciously recognized, which prompted a reconsultation. The tumor diameter rapidly increased to 74 mm, and a total right mastectomy was performed as a semi-emergency procedure. Necrotic and hemorrhagic lesions were mixed in a mottled state in the cleaved surface of the excised specimen, and the pathological diagnosis was stromal sarcoma mainly comprising of fibrosarcoma components. Stromal sarcoma of the breast lacks the epithelial component of a malignant phyllodes tumor, and effective systemic therapy has not been established; therefore, cases with local recurrence or distant metastasis result in poor prognosis. Since we encountered a case of stromal sarcoma of the breast that showed a rapid increase after several months, we will provide a report with some literature consideration.


Assuntos
Neoplasias da Mama , Tumor Filoide , Idoso de 80 Anos ou mais , Neoplasias da Mama/cirurgia , Feminino , Humanos , Mastectomia , Recidiva Local de Neoplasia , Tumor Filoide/cirurgia
4.
Surg Today ; 48(1): 58-65, 2018 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-28597350

RESUMO

PURPOSE: To evaluate the short- and long-term outcomes of the Frey procedure for chronic pancreatitis (CP). METHODS: The subjects of this study were 12 patients who underwent the Frey procedure for CP between January, 2000 and December, 2016. We assessed pain relief, weight gain, and exocrine/endocrine insufficiency during follow-up. RESULTS: The study population comprised 11 men and 1 woman (91.7% vs. 8.3%; mean age, 50.3 ± 6.8 years; range 39-61 years). Pancreatitis was caused by alcohol in 9 (75%) patients and was idiopathic in 3 (25%) patients. The mean follow-up period was 82.5 ± 46.5 months (range 16.9-152.1 months). There was no operative mortality, but three patients (25%) suffered postoperative morbidity. All patients were pain-free at the time of discharge. There was no case of new-onset diabetes mellitus after surgery, although one patient (8.3%) suffered exocrine insufficiency. The body weight and body mass index of all patients improved during follow-up. Only one patient continued to suffer pain in the long term. CONCLUSION: The findings of this long-term follow-up of patients who underwent the Frey procedure suggest that it offers effective pain relief and is a safe technique for the management of CP.


Assuntos
Pancreatectomia/métodos , Pancreaticojejunostomia/métodos , Pancreatite Crônica/cirurgia , Adulto , Índice de Massa Corporal , Feminino , Seguimentos , Humanos , Japão , Masculino , Pessoa de Meia-Idade , Pancreatite Crônica/diagnóstico por imagem , Estudos Retrospectivos , Fatores de Tempo , Resultado do Tratamento
5.
Surg Endosc ; 31(8): 3398-3404, 2017 08.
Artigo em Inglês | MEDLINE | ID: mdl-27924391

RESUMO

BACKGROUND: Wedge resection is the most commonly used method in laparoscopic partial gastrectomy for gastric gastrointestinal stromal tumor (GIST). However, this method can involve inadvertent resection of additional gastric tissue and cause gastric deformation. To minimize the volume of resected gastric tissue, we have developed a laparoscopic partial gastrectomy with seromyotomy which we call the 'lift-and-cut method' for gastric GIST. Here, we report a case series of this surgery. METHOD: First, the seromuscular layer around the tumor is cut. Because the mucosa and submucosa are extensible, the tumor is lifted toward the abdominal cavity. After sufficient lifting, the gastric tissue under the tumor is cut at the submucosal layer with a linear stapler (thus 'lift-and-cut method'). Finally, the defect in the seromuscular layer is closed with a hand-sewn suture. RESULTS: From April 2011 to December 2015, 28 patients underwent laparoscopic partial gastrectomy by this method at Osaka Red Cross Hospital. Average operation time was 126 min (range 65-302 min) and average blood loss was 10 ml (range 0-200 ml). No intraoperative complications including tumor rupture or postoperative complications regarded as Clavien-Dindo Grade II or higher occurred. All patients took sufficient solid diet at discharge. Median postoperative hospital stay was 7 days (range 5-21 days). On median follow-up of 26.6 months (range 6-54 months), no recurrence was reported. CONCLUSION: Laparoscopic partial gastrectomy by the lift-and-cut method is safe and simple, and widely applicable for gastric GIST.


Assuntos
Gastrectomia/métodos , Coto Gástrico , Tumores do Estroma Gastrointestinal/cirurgia , Laparoscopia/métodos , Recidiva Local de Neoplasia/cirurgia , Neoplasias Gástricas/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Resultado do Tratamento
6.
J Hepatol ; 63(4): 905-16, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26022691

RESUMO

BACKGROUND & AIMS: Splenectomy in cirrhotic patients has been reported to improve liver function; however the underlying mechanism remains obscure. In the present study, we investigated the mechanism using a murine model, which represents well the compensated liver cirrhosis. METHODS: C57BL/6 male mice were allowed to drink water including thioacetamide (TAA: 300 mg/L) ad libitum for 32 weeks. After splenectomy at 32 weeks, mice were sacrificed on days one, seven, and 28, respectively, while TAA-administration was continued. Perioperative changes in peripheral blood and liver tissues were analyzed. RESULTS: TAA treatment of mice for 32 weeks reproducibly achieved advanced liver fibrosis with splenomegaly, thrombocytopenia, and leukocytopenia. After splenectomy, liver fibrosis was attenuated, and macrophages/monocytes were significantly increased in peripheral blood, as well as in the liver. Progenitor-like cells expressing CK-19, EpCAM, or CD-133 appeared in the liver after TAA treatment, and gradually disappeared after splenectomy. Macrophages/monocytes accumulated in the liver, most of which were negative for Ly-6C, were adjacent to the hepatic progenitor-like cells, and quantitative RT-PCR indicated increased canonical Wnt and decreased Notch signals. As a result, a significant amount of ß-catenin accumulated in the progenitor-like cells. Moreover, relatively small Ki67-positive hepatic cells were significantly increased. Protein expression of MMP-9, to which Ly-6G-positive neutrophils contributed, was also increased in the liver after splenectomy. CONCLUSIONS: The hepatic accumulation of macrophages/monocytes, most of which are Ly-6C(lo), the reduction of fibrosis, and the gradual disappearance of hepatic progenitor-like cells possibly play significant roles in the tissue remodeling process in cirrhotic livers after splenectomy.


Assuntos
Antígenos Ly/metabolismo , Hiperesplenismo/complicações , Cirrose Hepática/cirurgia , Fígado/metabolismo , Macrófagos/metabolismo , Esplenectomia , Animais , Modelos Animais de Doenças , Citometria de Fluxo , Regulação da Expressão Gênica , Hepatócitos/metabolismo , Hepatócitos/patologia , Hiperesplenismo/metabolismo , Hiperesplenismo/cirurgia , Imuno-Histoquímica , Fígado/patologia , Cirrose Hepática/etiologia , Cirrose Hepática/genética , Masculino , Metaloproteinase 9 da Matriz/biossíntese , Metaloproteinase 9 da Matriz/genética , Camundongos , Camundongos Endogâmicos C57BL , RNA/genética , Reação em Cadeia da Polimerase em Tempo Real , Proteínas Wnt/biossíntese , Proteínas Wnt/genética
7.
Surg Today ; 45(4): 506-10, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24522893

RESUMO

A 70-year-old male was treated for gastric ulcers. Follow-up upper gastrointestinal endoscopy revealed an irregular, elevated tumor in the second portion of the duodenum. Upon pathological inspection of a biopsy specimen, a diagnosis of adenocarcinoma was made, and the patient was admitted to our hospital. Computed tomography showed an irregular mass in the pancreatic head and dilatation of the main pancreatic duct and bile duct. Pancreatic head carcinoma with infiltration of the duodenum was diagnosed, and pylorus-preserving pancreaticoduodenectomy was performed. A histopathological examination of the resected specimen showed moderately differentiated adenocarcinoma in the minor duodenal papilla and chronic pancreatitis in the pancreatic head. Therefore, primary adenocarcinoma of the minor duodenal papilla with mass-forming chronic pancreatitis was diagnosed. Currently, the patient is alive without recurrence 17 months after the surgery. Primary adenocarcinoma of the minor duodenal papilla is extremely rare. We herein report this case, and also provide a review of the literature.


Assuntos
Adenocarcinoma/diagnóstico , Ductos Pancreáticos , Neoplasias Pancreáticas/diagnóstico , Pancreatite Crônica/diagnóstico , Adenocarcinoma/complicações , Adenocarcinoma/patologia , Idoso , Endoscopia Gastrointestinal , Humanos , Imageamento por Ressonância Magnética , Masculino , Ductos Pancreáticos/diagnóstico por imagem , Ductos Pancreáticos/patologia , Ductos Pancreáticos/cirurgia , Neoplasias Pancreáticas/complicações , Neoplasias Pancreáticas/patologia , Pancreaticoduodenectomia , Pancreatite Crônica/complicações , Pancreatite Crônica/patologia , Tomografia Computadorizada por Raios X , Resultado do Tratamento
8.
RNA Biol ; 9(3): 302-13, 2012 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-22336715

RESUMO

Recently, a large number of non-coding RNAs (ncRNAs) have been found in a wide variety of organisms, but their biological functions are poorly understood, except for several tiny RNAs. To identify novel ncRNAs with essential functions in flowering plants, we focused attention on RNA polymerase III (Pol III) and its transcriptional activity, because most Pol III-transcribed RNAs contribute to key processes relating to cell activities, and have highly conserved promoter elements: upstream sequence elements, a TATA-like sequence, and a poly(T) stretch as a transcription terminator. After in silico prediction from the Arabidopsis genome, 20 novel ncRNAs candidates were obtained. AtR8 RNA (approx. 260 nt) and AtR18 RNA (approx. 160 nt) were identified by efficient in vitro transcription by Pol III in tobacco nuclear extracts. AtR8 RNA was conserved among six additional taxa of Brassicaceae, and the secondary structure of the RNA was also conserved among the orthologs. Abundant accumulation of AtR8 RNA was observed in the plant roots and cytosol of cultured cells. The RNA was not processed into a smaller fragment and no short open reading frame was included. Remarkably, expression of the AtR8 RNA responded negatively to hypoxic stress, and this regulation evidently differed from that of U6 snRNA.


Assuntos
Arabidopsis/genética , RNA Polimerase III/metabolismo , RNA Longo não Codificante/genética , Estresse Fisiológico/genética , Transcrição Gênica , Arabidopsis/enzimologia , Arabidopsis/metabolismo , Sequência de Bases , Brassicaceae/genética , Hipóxia Celular , Biologia Computacional/métodos , Sequência Conservada , Perfilação da Expressão Gênica , Ordem dos Genes , Genes de Plantas , Genoma de Planta , Dados de Sequência Molecular , Conformação de Ácido Nucleico , Motivos de Nucleotídeos , Transporte de RNA , RNA Longo não Codificante/química , RNA Longo não Codificante/metabolismo , Alinhamento de Sequência
9.
Jpn J Clin Oncol ; 41(3): 394-9, 2011 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-20956388

RESUMO

BACKGROUND: CSLEX is a type II carbohydrate antigen that interacts with the CSLEX-1 monoclonal antibody. CSLEX in combination with carbohydrate antigen 15-3 may be more useful than Carcinoembryonic Antigen with carbohydrate antigen 15-3 as tumor markers for monitoring of breast cancer. METHODS: The serum levels of tumor markers, including CSLEX, were measured in 480 consecutive breast cancer patients with or without metastasis who visited the outpatient clinic of the Division of Breast and Endocrine Surgery, Shinshu University Hospital, between April 2007 and September 2007. RESULTS: Serum levels of each of the tumor markers correlated significantly with the status of metastasis (P < 0.01). Combinations of Carcinoembryonic Antigen and carbohydrate antigen 15-3, Carcinoembryonic Antigen and Nation Cancer Center-Stomach-439, Carcinoembryonic Antigen and CSLEX, carbohydrate antigen 15-3 and Nation Cancer Center-Stomach-439, and carbohydrate antigen 15-3 and CSLEX levels also correlated significantly with the status of metastasis (P < 0.01). The sensitivity, specificity, positive predictive value, negative predictive value and accuracy were almost the same for CSLEX and Nation Cancer Center-Stomach-439, which are both type II carbohydrate antigens. The cutoff indexes of serum CSLEX and Nation Cancer Center-Stomach-439 for detection of breast cancer metastasis were 38.8 ± 52.7-fold and 22.1 ± 27.8-fold, respectively (P = 0.16). CONCLUSIONS: These data suggest that the diagnostic values of CSLEX and Nation Cancer Center-Stomach-439 are similar in single or combined use. However, the cutoff index of serum CSLEX tended to be higher than that of Nation Cancer Center-Stomach-439, which may make CSLEX more useful for detection of breast cancer metastasis.


Assuntos
Biomarcadores Tumorais/sangue , Neoplasias da Mama/sangue , Neoplasias da Mama/secundário , Oligossacarídeos/sangue , Feminino , Humanos , Pessoa de Meia-Idade , Prognóstico , Curva ROC , Sensibilidade e Especificidade , Antígeno Sialil Lewis X
10.
Int J Clin Oncol ; 16(2): 156-60, 2011 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-20721595

RESUMO

We present a case of a 39-year-old woman with a giant recurrent malignant phyllodes tumor accompanied with bleeding and infection. She underwent full-thickness chest-wall resection. Bony thorax reconstruction and stabilization was accomplished using a Composix mesh™, and soft tissue reconstruction was performed with a musculocutaneous flap of latissimus dorsi muscle. The patient had a good postoperative outcome, and the surgical treatment remarkably improved her quality of life. Because chemotherapy and radiation are not established for treating malignant phyllodes tumors, an aggressive surgical approach should be considered for patients with a locally advanced malignant phyllodes tumor.


Assuntos
Neoplasias da Mama/cirurgia , Recidiva Local de Neoplasia/cirurgia , Tumor Filoide/cirurgia , Parede Torácica/cirurgia , Adulto , Feminino , Humanos , Metástase Neoplásica , Recidiva Local de Neoplasia/patologia , Tumor Filoide/patologia , Procedimentos de Cirurgia Plástica/métodos , Retalhos Cirúrgicos , Telas Cirúrgicas , Procedimentos Cirúrgicos Torácicos/métodos
11.
Hepatogastroenterology ; 58(112): 1909-11, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-22234059

RESUMO

We report two cases of inflammatory pseudotumor of the spleen treated by laparoscopic splenectomy. The first patient was a 61-year-old woman with a 3cm splenic tumor detected incidentally by ultrasonography. Computed tomography showed a well-demarcated splenic mass. She underwent hand-assisted laparoscopic splenectomy. The second patient was a 51-year-old man in whom a splenic tumor was found on follow-up computed tomography after resection of occipital malignant neurinoma. Ultrasound and magnetic resonance imaging confirmed a splenic tumor, which showed no uptake on 18F-fluorodeoxyglucose positron emission tomography. Laparoscopic splenectomy was performed. The histopathological diagnosis was inflammatory pseudotumor in both cases. Their postoperative course was uneventful, with a postoperative hospital stay of 11 and 8 days, respectively. Splenectomy is usually performed in patients with splenic tumors because imaging techniques cannot exclude malignancy. Laparoscopic splenectomy may be a useful option for patients with splenic tumors.


Assuntos
Granuloma de Células Plasmáticas/cirurgia , Laparoscopia/métodos , Esplenectomia/métodos , Esplenopatias/cirurgia , Feminino , Granuloma de Células Plasmáticas/diagnóstico , Humanos , Masculino , Pessoa de Meia-Idade , Esplenopatias/diagnóstico
12.
Gan To Kagaku Ryoho ; 38(7): 1123-6, 2011 Jul.
Artigo em Japonês | MEDLINE | ID: mdl-21772095

RESUMO

Aromatase inhibitors (AI) have largely replaced tamoxifen as the first-line of treatment for postmenopausal women with advanced or metastatic hormone-receptor-positive breast cancer. However, there is no established strategy for treating AI refractory cases. In this study, we investigated the efficacy of high-dose Toremifene therapy (HD-TOR). From January 2001 through April 2010, nineteen patients received 120 mg of TOR daily. The overall response rate was 36.8% (CR; 1, PR; 6), and the clinical benefit was 47.4%. The clinical benefit rate to each of the metastatic organs were: lung, 42.9%; bone, 13%; liver, 25%; and lymph node, 40%. A higher clinical benefit rate was observed in lung or lymph node metastases. The clinical benefit rate of HD-TOR as first to third-line therapy was 50%, which was more effective than that of fourth-line therapy. Our data suggests that HD-TOR may be one of the effective treatment strategies for patients with AI refractory advanced or metastatic hormone receptor-positive breast cancer.


Assuntos
Antineoplásicos Hormonais/uso terapêutico , Neoplasias da Mama/tratamento farmacológico , Resistencia a Medicamentos Antineoplásicos , Toremifeno/uso terapêutico , Idoso , Idoso de 80 Anos ou mais , Antineoplásicos Hormonais/administração & dosagem , Antineoplásicos Hormonais/efeitos adversos , Inibidores da Aromatase/uso terapêutico , Neoplasias da Mama/metabolismo , Neoplasias da Mama/patologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Metástase Neoplásica , Estadiamento de Neoplasias , Receptor ErbB-2/metabolismo , Receptores de Estrogênio/metabolismo , Receptores de Progesterona/metabolismo , Recidiva , Estudos Retrospectivos , Toremifeno/administração & dosagem , Toremifeno/efeitos adversos
13.
Asian J Endosc Surg ; 14(1): 28-33, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-32638531

RESUMO

INTRODUCTION: Appropriate dissection of the infrapyloric lymph nodes (no. 6 LNs) is important in gastric cancer surgery. In laparoscopic surgery, dissection of the no. 6 LNs along the inner dissectable layer from the left side of patient has been reported. However, it is difficult for surgeons to provide appropriate traction with their left hand from the left side. To resolve this difficulty, we dissected the no. 6 LNs from the patient's right side to identify the optimal layer. We then evaluated the oncologic reliability of the layer and the safety of this procedure. METHODS: From the patient's right side, the surgeon used their left hand to provide appropriate traction when pulling the adipose tissue, including the no. 6 LNs. This exposed the optimal layer between the adipose tissue and the pancreas. To assess this maneuver, the surgical outcomes of patients who underwent laparoscopic distal gastrectomy from April 2011 to March 2013 were retrospectively analyzed. The surgical outcomes included the number of the no. 6 LNs resected, time to dissect the no. 6 LNs, incidence of pancreatic complications, and recurrence in the no. 6 LNs. RESULTS: There were 112 patients identified. The median number of the no. 6 LNs resected was five. The median time to dissect the no. 6 LNs was 14 minutes. Four patients developed pancreatic fistula, and another four patients developed intra-abdominal abscess. There was no recurrence in the no. 6 LNs. CONCLUSION: The optimal layer was oncologically reliable, and these procedures were safe.


Assuntos
Gastrectomia/métodos , Laparoscopia , Excisão de Linfonodo/métodos , Neoplasias Gástricas , Tração/métodos , Adulto , Idoso , Idoso de 80 Anos ou mais , Dissecação/métodos , Feminino , Humanos , Linfonodos/cirurgia , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia , Reprodutibilidade dos Testes , Estudos Retrospectivos , Neoplasias Gástricas/cirurgia
14.
Surg Case Rep ; 6(1): 41, 2020 Feb 24.
Artigo em Inglês | MEDLINE | ID: mdl-32095941

RESUMO

BACKGROUND: Sebaceous carcinoma (SC) is frequently classified as periocular or extraocular. Extraocular SC is rare and mainly occurs in the head and neck, the major salivary glands, or oral mucosa. SC of the breast, lung, and ovary is particularly rare, and the few cases of SC of the breast predominantly exhibit intraductal growth. CASE PRESENTATION: A 47-year-old Japanese woman was referred to our hospital with accumulated polymorphic calcification in the left breast which was detected using mammography. Ultrasonography revealed an irregular 13-mm mass in the left breast, and analysis of a core needle biopsy revealed noninvasive ductal carcinoma. Total mastectomy and sentinel lymph node biopsy were performed. Histopathology demonstrated that carcinoma in situ (CIS) represented a significant lesion, and the cytoplasm of tumor cells was clear with numerous minute vacuoles. Immunohistochemical analysis demonstrated that most tumor cells expressed adipophilin. Together, these findings led to a diagnosis of SC, mainly comprising CIS. CONCLUSIONS: We encountered a rare case of SC of the breast with predominant CIS.

15.
Pancreas ; 49(6): 799-805, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-32541635

RESUMO

OBJECTIVES: Pancreatic fistula (PF) is one of the most common complications after pancreaticoduodenectomy (PD). The soft pancreatic texture is known to be an important predictive factor for PF after PD. However, its evaluation is dependent on the sense of touch by the operator during operation, thus not objective. The aim of this study was to investigate the relationship between mean elasticity via intraoperative ultrasound elastography and histological pancreatic hardness, as well as predictive factor of PF after PD. METHODS: Forty-eight patients who underwent ultrasound elastography during PD and had pancreatic parenchyma histologically evaluated were included. RESULTS: Pancreatic fistula was noted in 20 patients. There were significant differences in the histological pancreatic fibrosis rate between soft pancreas group (8.2%) and hard pancreas group (28.4%, P < 0.05) and in the mean elasticity between soft pancreas group (1.94 m/s) and hard pancreas group (3.17 m/s, P < 0.05). The mean elasticity was significantly correlated with pancreatic fibrosis rate (P < 0.05). A multivariate analysis revealed that the mean elasticity of less than 2.2 m/s was a significant predictor of PF after PD (P = 0.003). CONCLUSIONS: Intraoperative ultrasound elastography could predict pancreatic texture objectively. The mean elasticity of less than 2.2 m/s was a significant predictor of PF after PD.


Assuntos
Técnicas de Imagem por Elasticidade/métodos , Pâncreas/diagnóstico por imagem , Fístula Pancreática/diagnóstico por imagem , Pancreaticoduodenectomia/métodos , Complicações Pós-Operatórias/diagnóstico por imagem , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Fibrose/diagnóstico por imagem , Humanos , Cuidados Intraoperatórios , Masculino , Pessoa de Meia-Idade , Pâncreas/patologia , Fístula Pancreática/etiologia , Pancreaticoduodenectomia/efeitos adversos , Assistência Perioperatória , Complicações Pós-Operatórias/etiologia , Cuidados Pré-Operatórios , Curva ROC , Fatores de Risco
16.
Histol Histopathol ; 35(11): 1319-1328, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-32945524

RESUMO

BACKGROUND AND AIM: Among several noninvasive evaluation methods of portal hypertension (PH), the measurement of spleen stiffness is a reliable method for predicting esophageal variceal bleeding; however, the underlying mechanisms for increased stiffness remain unclear. We attempted to elucidate the pathological changes to the spleen and the underlying mechanisms in patients with PH. METHODS: Histological examination was performed using splenic tissues from 42 patients with PH who underwent laparoscopic splenectomy, and the results were compared with those from patients without PH. RESULTS: In addition to splenic sinus congestion, diffuse fibrosis was detected in the splenic cords in the red pulp of patients with PH. The degree of the fibrosis was well correlated with severity in thrombocytopenia and splenomegaly. Cells expressing α-smooth muscle actin dramatically increased in the splenic cord. Cytoglobin (Cygb) expression was detected in human splenic cords as reported in animal reticular cells, and fluorescent double immunostaining revealed that these cells expressed α-smooth muscle actin in patients with PH, suggesting transformation of Cygb-expressing cells to myofibroblastic cells. Expression levels of nicotinamide adenine dinucleotide phosphate oxidase (NOX) 2, nitrotyrosine, and transforming growth factor-ß were markedly upregulated in the red pulp of patients with PH, implying a significant role of oxidative stress in the mechanism for splenic fibrosis. CONCLUSION: Splenic fibrosis progresses along with advancement of PH. Cygb-expressing cells in the splenic cord possibly participate in this process through mechanisms including oxidative stress.


Assuntos
Citoglobina/metabolismo , Hipertensão Portal/etiologia , Cirrose Hepática/complicações , Baço/metabolismo , Esplenopatias/etiologia , Idoso , Biomarcadores/metabolismo , Progressão da Doença , Feminino , Humanos , Hipertensão Portal/diagnóstico , Laparoscopia , Cirrose Hepática/diagnóstico , Masculino , Pessoa de Meia-Idade , Estresse Oxidativo , Baço/patologia , Baço/cirurgia , Esplenectomia , Esplenopatias/metabolismo , Esplenopatias/patologia , Esplenopatias/cirurgia
17.
J Hepatobiliary Pancreat Surg ; 16(6): 808-15, 2009.
Artigo em Inglês | MEDLINE | ID: mdl-19466379

RESUMO

BACKGROUND/PURPOSE: Laparoscopic liver resection has not gained wide acceptance compared with other laparoscopic procedures. We evaluated the impact of simulated surgery using data from multidetector CT scanning on planning for laparoscopic hepatectomy. METHODS: The hepatectomy simulation system was programmed to perform three-dimensional reconstruction of the vasculature and to calculate the liver resection volume and surgical margin. In 35 patients undergoing laparoscopic hepatectomy or laparoscopy-assisted hepatectomy, the liver resection volume and margin were estimated by simulation preoperatively. Then, the estimated values were compared with the actual resected liver weight and margin. RESULTS: Three-dimensional reconstruction allowed stereoscopic identification of the tumor-bearing portal vein and draining vein. The predicted liver resection volume and margin both showed a significant correlation with the actual values: the mean difference was 21 mL (P < 0.0001) and 1.3 mm (P < 0.01), respectively. Preoperative planning based on simulated resection facilitated laparoscopic mobilization of the liver and mini-laparotomy resection of a large tumor located in the upper right lobe. CONCLUSIONS: Three-dimensional simulation of hepatectomy facilitated intraoperative identification of the vascular anatomy, and accurately predicted the resected liver volume and surgical margin. This simulation method should contribute to preoperative planning for safe and curative laparoscopic hepatectomy.


Assuntos
Carcinoma Hepatocelular/diagnóstico por imagem , Carcinoma Hepatocelular/cirurgia , Hepatectomia/métodos , Laparoscopia/métodos , Neoplasias Hepáticas/cirurgia , Fígado/diagnóstico por imagem , Cirurgia Assistida por Computador/métodos , Carcinoma Hepatocelular/irrigação sanguínea , Feminino , Humanos , Fígado/cirurgia , Neoplasias Hepáticas/irrigação sanguínea , Neoplasias Hepáticas/diagnóstico por imagem , Masculino , Ilustração Médica , Pessoa de Meia-Idade , Cuidados Pré-Operatórios , Tomografia Computadorizada por Raios X/métodos
18.
Appl Environ Microbiol ; 74(11): 3400-9, 2008 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-18390671

RESUMO

7-Aminocephalosporanic acid (7-ACA) is an important material in the production of semisynthetic cephalosporins, which are the best-selling antibiotics worldwide. 7-ACA is produced from cephalosporin C via glutaryl-7-ACA (GL-7-ACA) by a bioconversion process using d-amino acid oxidase and cephalosporin acylase (or GL-7-ACA acylase). Previous studies demonstrated that a single amino acid substitution, D433N, provided GL-7-ACA acylase activity for gamma-glutamyltranspeptidase (GGT) of Escherichia coli K-12. In this study, based on its three-dimensional structure, residues involved in substrate recognition of E. coli GGT were rationally mutagenized, and effective mutations were then combined. A novel screening method, activity staining followed by a GL-7-ACA acylase assay with whole cells, was developed, and it enabled us to obtain mutant enzymes with enhanced GL-7-ACA acylase activity. The best mutant enzyme for catalytic efficiency, with a k(cat)/K(m) value for GL-7-ACA almost 50-fold higher than that of the D433N enzyme, has three amino acid substitutions: D433N, Y444A, and G484A. We also suggest that GGT from Bacillus subtilis 168 can be another source of GL-7-ACA acylase for industrial applications.


Assuntos
Cefalosporinas/metabolismo , Escherichia coli K12/enzimologia , Proteínas de Escherichia coli/genética , Proteínas de Escherichia coli/metabolismo , gama-Glutamiltransferase/genética , gama-Glutamiltransferase/metabolismo , Sequência de Aminoácidos , Substituição de Aminoácidos/genética , Proteínas de Escherichia coli/isolamento & purificação , Cinética , Modelos Moleculares , Dados de Sequência Molecular , Mutação de Sentido Incorreto , Alinhamento de Sequência , gama-Glutamiltransferase/isolamento & purificação
19.
Mutat Res ; 654(2): 138-44, 2008 Jul 31.
Artigo em Inglês | MEDLINE | ID: mdl-18585474

RESUMO

Heavy metal pollution of soil causes biological problems, such as mutagenicity to living organisms, including human beings. However, few methods have been developed to assess metal mutagenicity in soil. To avoid metal mutagenicity, an adequate bio-monitoring method is required. In the present study, to determine if the analysis of oxidative DNA damage generated in the earthworm is a useful bio-monitoring method for soil mutagenicity, the accumulation of 8-hydroxydeoxyguanosine (8-OH-dG), a major form of oxidative DNA damage, in Eisenia fetida (Savigny, 1826) treated with cadmium chloride (CdCl2) or nickel chloride (NiCl2) was analyzed. E. fetida was treated with Cd (10 or 200 microg/g soil) or Ni (10 or 200 microg/g soil) for 1, 2, and 3 weeks or 3 months. After metal exposure, the metal concentration in E. fetida was analyzed by atomic absorption spectrometry and the 8-OH-dG accumulated in E. fetida was analyzed by HPLC analyses and immunohistochemistry. Atomic absorption spectrometry revealed that Cd, but not Ni, accumulated within E. fetida. The 8-OH-dG levels in the DNA of E. fetida treated with Cd for 3 months were significantly higher than those in control E. fetida. Moreover, immunohistochemical analyses revealed that positive signals for 8-OH-dG accumulation in seminal vesicles were detected only in E. fetida treated with 10 microg of Cd for 3 months. Although some points remain unresolved, a bio-monitoring system analyzing the DNA damage generated in the earthworm might be useful for the assessment of the mutagenicity of soil contaminated with various heavy metals, such as Cd.


Assuntos
Cloreto de Cádmio/toxicidade , Guanina/análogos & derivados , Metais Pesados/toxicidade , Níquel/toxicidade , Oligoquetos/metabolismo , Poluentes do Solo/toxicidade , 8-Hidroxi-2'-Desoxiguanosina/análogos & derivados , Animais , Biomarcadores/análise , Cloreto de Cádmio/análise , Dano ao DNA , Relação Dose-Resposta a Droga , Guanina/análise , Guanina/biossíntese , Masculino , Mutagênicos/análise , Níquel/análise , Oligoquetos/genética , Glândulas Seminais/química
20.
Am Surg ; 84(12): 1938-1944, 2018 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-30606352

RESUMO

It has been obscure whether or not noncurative hepatic resection (Hx) has a favorable impact on the clinical course in patients with advanced hepatocellular carcinoma (HCC). The aim of this study is to clarify the significance of noncurative Hx for advanced HCC. Among 666 consecutive patients undergoing Hx for HCC in our department, 79 patients underwent noncurative Hx. These patients were classified as Group A (presence of macrovascular invasion [MVI]; n = 29), Group B (residual tumors in the remnant liver; n = 37), Group C (residual tumors in the remnant liver with MVI; n = 7), or Group D (residual tumors in the remnant liver with distant metastasis [with or without MVI]; n = 6). The three-year survival rates were 49.6 per cent in Group A, 30.3 per cent in Group B, 14.3 per cent in Group C, and 0.0 per cent in Group D, respectively (Groups A and B vs Group D, P < 0.05). Moreover, the survival rate was significantly higher in patients with ≤3 tumors than in those with ≥4 tumors (P < 0.05), when Group B was divided into subgroups according to the number of residual tumors in the remnant liver. In conclusion, noncurative Hx might be acceptable for advanced HCC with MVI or ≤3 residual tumors in the remnant liver.


Assuntos
Carcinoma Hepatocelular/cirurgia , Hepatectomia/métodos , Neoplasias Hepáticas/cirurgia , Fígado/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Carcinoma Hepatocelular/patologia , Feminino , Humanos , Fígado/patologia , Neoplasias Hepáticas/patologia , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Fatores de Risco
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