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1.
Eur Rev Med Pharmacol Sci ; 25(9): 3432-3439, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-34002816

RESUMO

OBJECTIVE: Adenomyosis is the consequence of the myometrial invasion by endometrial glands and stroma. Transvaginal ultrasonography plays a decisive role in the diagnosis and monitoring of this pathology. Our study aims to evaluate the efficacy of LNG-IUS (Levonorgestrel Releasing Intrauterine System) as medical therapy. We analyzed both clinical symptoms and ultrasonographic aspects of menometrorrhagia and dysmenorrhea in patients with adenomyosis and the control group. PATIENTS AND METHODS: A prospective cohort study was carried out on 28 patients suffering from symptomatic adenomyosis treated with LNG-IUS. Adenomyosis was diagnosed through transvaginal ultrasonography by an expert sonographer. A control group of 27 symptomatic patients (menorrhagia and dysmenorrhea) without a transvaginal ultrasonographic diagnosis of adenomyosis was treated in the same way. The two cohorts were compared to the efficacy of LNG-IUS on menorrhagia and dysmenorrhea.  Patients are evaluated at the time of LNG-IUS insertion and six months after for: increased uterine volume, globulous uterine morphology, uterine symmetry, alterations in the junctional zone, heterogeneous myometrial texture, presence of myometrial cysts, hyperechogenic lines crossing the myometrium, adenomyomas, menstrual blood loss and dysmenorrhea. RESULTS: After six months, the uterine volume decreased significantly in both cohorts (p=0.005; p=0.005). Furthermore, uterine symmetry, visibility of the junctional zone, heterogeneity of myometrial texture, presence of myometrial cysts, hyperechogenic lines and adenomyomas improved in patients affected by adenomyosis (p>0.001; p>0.001; p>0.001; p=0.014; p=0.025; p=0.014). The blood loss decreased significantly in both the cohorts (p<0.001) and particularly in adenomyotic patients. Pain relief was observed in all the patients (p<0.001). CONCLUSIONS: LNG-IUS can be considered an effective treatment for managing symptoms and improving uterine morphology.


Assuntos
Adenomiose/tratamento farmacológico , Dismenorreia/tratamento farmacológico , Dispositivos Intrauterinos Medicados , Levanogestrel/uso terapêutico , Menorragia/tratamento farmacológico , Adenomiose/diagnóstico por imagem , Adulto , Estudos de Coortes , Dismenorreia/diagnóstico por imagem , Feminino , Humanos , Menorragia/diagnóstico por imagem , Pessoa de Meia-Idade , Estudos Prospectivos , Ultrassonografia
2.
Eur Rev Med Pharmacol Sci ; 23(24): 10672-10677, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31858534

RESUMO

OBJECTIVE: The aim of the study was to evaluate the sensitivity and specificity values of high-risk HPV DNA test, p16/ki-67, and HPV mRNA in histologically high-grade cervical intraepithelial lesions (CIN2-CIN3) in women aged 21-24 years with diagnosis of atypical squamous cells of undetermined significance (ASCUS) or low-grade squamous intraepithelial lesion (LSIL) at pap smear. PATIENTS AND METHODS: 342 patients between 21-24 years old, attending spontaneously our clinics, 118 with ASCUS and 224 with LSIL, were enrolled in the study. All patients underwent colposcopy and biopsies were performed in the areas with major changes. All patients were tested at the same time for p16/ki-67, high-risk HPV DNA and HPV mRNA. RESULTS: Nineteen out of 118 women with ASCUS showed a high-grade cervical intraepithelial lesion, 11 out of 118 (9.32%) CIN2, and 8 out of 118 (6.78%) CIN3. The sensitivity of high-risk HPV DNA was 99.9%, and the specificity 23.2%; p16/ki-67 pointed out a sensitivity of 90.9%, and a specificity of 81.8%; HPV mRNA showed a sensitivity of 81.8%, and specificity of 87.9% in CIN2 lesions. In CIN3 lesions, the sensitivity of high-risk HPV DNA was 99.9%, while the specificity was 19.1%; p16/ki-67 showed a sensitivity of 99.9%, and a specificity of 73.7%; HPV mRNA relived a sensitivity of 87.5%, and a specificity of 80.8%. In women with LSIL, a total of 42/224 (18.75%) of CIN2 were found at the histopathological examination, while 17/224 (7.59%) women presented a CIN3. No case of invasive cancer was identified. High-risk HPV DNA was positive in 190/224 (84.8%), p16/ki-67 in 119/224 (53.1%), and HPV mRNA in 104/224 (46.4%). In women with CIN2, the sensitivity of high-risk HPV DNA was of 92.8%, and the specificity 17.5%, the sensitivity of p16/ki-67 was 95.2%, and specificity 61.8%. HPV mRNA showed a sensitivity of 88.8% and a specificity of 87.8%. In women with CIN3, the sensitivity of high-risk HPV DNA was 88.2%, and the specificity 29.7%; p16/ki-67 pointed out a sensitivity of 94.1%, and a specificity of 49%; HPV mRNA showed a sensitivity of 88.2% and a specificity of 80.6. CONCLUSIONS: Taking into account the high rate of spontaneous regression of high-grade lesions in young women, these tests, in particular, the HPV mRNA test, used as a triage test for ASCUS or LSIL, can modify follow-up triage strategy. In fact, this biomarker, due to its high specificity, could lead to a cytology repetition instead of an immediate colposcopy, avoiding over diagnosis and potential overtreatment in this category of women.


Assuntos
Células Escamosas Atípicas do Colo do Útero/virologia , DNA Viral , Testes de DNA para Papilomavírus Humano , Infecções por Papillomavirus/diagnóstico , RNA Mensageiro , Lesões Intraepiteliais Escamosas Cervicais/diagnóstico , Displasia do Colo do Útero/diagnóstico , Células Escamosas Atípicas do Colo do Útero/metabolismo , Células Escamosas Atípicas do Colo do Útero/patologia , Inibidor p16 de Quinase Dependente de Ciclina/metabolismo , DNA Viral/genética , Feminino , Humanos , Antígeno Ki-67/metabolismo , Teste de Papanicolaou , Infecções por Papillomavirus/virologia , RNA Mensageiro/genética , Sensibilidade e Especificidade , Lesões Intraepiteliais Escamosas Cervicais/metabolismo , Lesões Intraepiteliais Escamosas Cervicais/patologia , Lesões Intraepiteliais Escamosas Cervicais/virologia , Triagem , Displasia do Colo do Útero/metabolismo , Displasia do Colo do Útero/patologia , Displasia do Colo do Útero/virologia
3.
Biochemistry (Mosc) ; 83(10): 1222-1230, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30472959

RESUMO

As key regulators of cell signaling, protein kinases (PKs) are attractive targets for therapeutic intervention in a variety of diseases. Herein, we report for the first time the inhibitory activity of polycyclic peptides, particularly, derivatives of glycopeptide antibiotics teicoplanin and eremomycin, against a panel of 12 recombinant human protein kinases and two protein kinases (CK1 and CK2) isolated from rat liver. Several of the investigated compounds inhibited various PKs with IC50 values below 10 µM and caused >90% suppression of the enzyme activity at 10 µM concentration. Kinetic analysis of the protein kinase CK2α inhibition by the teicoplanin aglycon analogue (7) demonstrated the non-competitive mechanism of inhibition (with regard to ATP). Interestingly, the inhibitory activity of some investigated compounds correlated with the earlier described antiviral activity against HIV, HCV, and other corona- and flaviviruses.


Assuntos
Antibacterianos/química , Glicopeptídeos/química , Inibidores de Proteínas Quinases/metabolismo , Proteínas Quinases/metabolismo , Animais , Antivirais/química , Antivirais/metabolismo , Antivirais/farmacologia , HIV/fisiologia , Humanos , Interações Hidrofóbicas e Hidrofílicas , Concentração Inibidora 50 , Cinética , Fígado/metabolismo , Inibidores de Proteínas Quinases/química , Proteínas Quinases/química , Proteínas Quinases/genética , Ratos , Proteínas Recombinantes/biossíntese , Proteínas Recombinantes/química , Teicoplanina/química , Replicação Viral/efeitos dos fármacos
4.
Eur Rev Med Pharmacol Sci ; 21(10): 2504-2511, 2017 05.
Artigo em Inglês | MEDLINE | ID: mdl-28617533

RESUMO

OBJECTIVE: The aim of the study was to evaluate the relationship between bacterial vaginosis (BV) and relapse of cervical intraepithelial neoplasia grade 2 or more (CIN2+) after Loop electrosurgical excision procedure (LEEP). PATIENTS AND METHODS: One hundred four patients who underwent LEEP for CIN2+ were followed up every six months for three years. Fifty-three were negative for BV and fifty-one were positive. Each clinical control included Pap test, colposcopy, Amsel criteria test, HPV-DNA, and HPV-mRNA test. RESULTS: Patients' age, presence of BV, positivity to HPV-DNA and HPV-mRNA tests were analyzed. The average age of patients was 42.5 ± 8.92 years (median: 42.5; range from 27 to 58 years). The minimum follow-up was 6 months and maximum 36 months (average: 22.8 ± 4.53; median: 24). The 10% of the patients with HPV-mRNA test negative had relapsed, compared to 45% of patients with HPV-mRNA test positive. Among the 53 patients without BV the 20% had relapsed compared with 23% of 51 patients with diagnosis of BV. CONCLUSIONS: There is no evidence for higher percentage of relapse in patients with BV, submitted to excisional procedure for CIN2+ associated to HPV-m-RNA test positivity. There is only a correlation among BV and relapse of CIN2+ lesions after LEEP.


Assuntos
Recidiva Local de Neoplasia/etiologia , Infecções por Papillomavirus/complicações , Displasia do Colo do Útero/cirurgia , Neoplasias do Colo do Útero/cirurgia , Vaginose Bacteriana/complicações , Adulto , Idoso , Colposcopia , Eletrocirurgia , Feminino , Humanos , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/epidemiologia , Teste de Papanicolaou , Papillomaviridae/isolamento & purificação , Infecções por Papillomavirus/virologia , Gravidez , RNA Mensageiro/genética , Neoplasias do Colo do Útero/virologia , Esfregaço Vaginal , Adulto Jovem , Displasia do Colo do Útero/virologia
5.
Eur Rev Med Pharmacol Sci ; 21(9): 2255-2260, 2017 05.
Artigo em Inglês | MEDLINE | ID: mdl-28537655

RESUMO

OBJECTIVE: To compare hysterectomy and levonorgestrel intra-uterine system (LNG-IUS) for the treatment of abnormal uterine bleeding (AUB) and iron deficiency anemia. PATIENTS AND METHODS: Retrospective study evaluating quality of life, sexual function, satisfaction and blood hemoglobin concentration improvement in 60 pre-menopausal women treated with hysterectomy or LNG-IUS. All analysis was performed with statistical software SPSS 21.0 (SPSS Inc., Chicago, IL, USA). RESULTS: Despite superior control of bleeding and dysmenorrhea observed after hysterectomy, LNG-IUS showed similar impact on blood hemoglobin levels, quality of life, satisfaction and sexual function resulting more cost-effective. CONCLUSIONS: In the absence of contraindications, LNG-IUS should always be the first therapeutic choice for chronic AUB. Surgical treatment must be considered as an "extrema ratio".


Assuntos
Histerectomia/psicologia , Dispositivos Intrauterinos Medicados , Levanogestrel/administração & dosagem , Menorragia/tratamento farmacológico , Qualidade de Vida , Adulto , Feminino , Humanos , Pessoa de Meia-Idade , Estudos Retrospectivos
6.
Eur Rev Med Pharmacol Sci ; 20(20): 4236-4242, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27831652

RESUMO

OBJECTIVE: The incidence of abnormal cervical cytology in pregnancy is similar to that reported for non-pregnant women. Furthermore, 1% of pregnant women annually screened for cervical cancer will be diagnosed with cervical intraepithelial neoplasia (CIN) of various degrees. For this reason, Pap smear should be performed in the first trimester of pregnancy. The persistence of HR-HPV infection is related to the development of CIN. However, the relationship between CIN and HR-HPV infection during pregnancy and postpartum can hardly be found. The aim of this work was to assess the proper management of abnormal cytology during and after pregnancy evaluating regression rate, persistence rate and risk of progression and the predictive role of HPV molecular tests. PATIENTS AND METHODS: Patients with abnormal cervical cytology were followed-up using colposcopy and colposcopy-directed biopsies every 12 weeks. Molecular tests were performed at the moment of the cytological diagnosis. Patients not treated in pregnancy were re-evaluated with cytology, colposcopy, biopsies, HPV-DNA test and HPV-mRNA test for a final diagnosis 8 weeks postpartum. Women with a persistent CIN 2-3 lesion at this follow-up check, underwent an excisional procedure by LEEP and then re-evaluated every 6 months for a year. RESULTS: HPV-DNA test showed a sensitivity of 90.5% and a negative predictive value of 96.4%. Specificity and positive predictive values were 67.9% and 43.2%, respectively. For HPV-mRNA test, a sensitivity of 76.2% and a NPV of 93.9% were found; specificity and PPV were 98.7% and 94.1% respectively. CONCLUSIONS: An observational management based on the use of molecular test and particularly HPV-mRNA test for its higher specificity, is a reasonable possibility in the follow-up of CIN2/3 lesions during pregnancy.


Assuntos
Infecções por Papillomavirus/diagnóstico , Complicações Neoplásicas na Gravidez/diagnóstico , RNA Mensageiro , Neoplasias do Colo do Útero/diagnóstico , Adulto , Colposcopia , Feminino , Humanos , Papillomaviridae/genética , Gravidez , Displasia do Colo do Útero
7.
Eur Rev Med Pharmacol Sci ; 20(17): 3528-34, 2016 09.
Artigo em Inglês | MEDLINE | ID: mdl-27649651

RESUMO

OBJECTIVE: The increased use of the intrauterine contraception (IUC) in female population and its probable relationship with cervical squamous intraepithelial lesions and cervical cancer make necessary clarify the possible interaction between the device and the pre-neoplastic lesions. PATIENTS AND METHODS: Seven hundred and eighty-nine patients users of IUC and 1491 patients ever users of IUC were followed every 6 months for 3 years. Each clinical control included Papanicolau test, colposcopy, HPV-DNA test and HPV-mRNA test. Also, in patients IUC users we analyzed the type of device, years of use and average age. RESULTS: Cytological sampling, histological examination, HPV-DNA test and HPV-mRNA test showed that there are not significantly differences between patients with or without IUC. CONCLUSIONS: None difference arose regarding persistence and progression between patients IUC users and IUC no users, for this reason, intrauterine contraception does not seem to be a co-causal factor in the possible development of cervical cancer.


Assuntos
Dispositivos Intrauterinos , Infecções por Papillomavirus/diagnóstico , Displasia do Colo do Útero , Neoplasias do Colo do Útero , Adulto , Feminino , Humanos , Papillomaviridae/genética , Adulto Jovem
8.
Eur Rev Med Pharmacol Sci ; 19(14): 2528-36, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26221878

RESUMO

OBJECTIVE: Traditional surgery presents some disadvantages, such as the necessity for general anesthesia, hemorrhage, recurrence of pathology, and the possible onset of dyspareunia due to an excessive scarring. CO2 laser surgery might resolve these problems and might be employed in a wider range of clinical indications than usual. We examined the results of CO2 laser surgery in patients affected by benign pathologies and congenital malformations of the female lower genital tract. PATIENTS AND METHODS: In this observational study, we enrolled 49 women who underwent CO2 laser surgery for the following indications: Bartholin's gland cyst, imperforate hymen, vaginal septum, Nabothian cyst, and vaginal polyps. Feasibility, cost-effectiveness, complication rate, recurrence rate, short- and long-term outcomes were assessed. RESULTS: All procedures were carried out in a short operative time, without any intraoperative complications. Only 1 (2.0%) out of 49 patients required a hemostatic suture for bleeding. Postoperative period was uneventful in all patients, except 6 (12.2%) out of 49 patients who reported pain one day after surgery, successfully treated with paracetamol. Healing was rapid and excellent in all cases; no wound infection, scarring or stenosis were noticed. Preoperative symptoms reduced or disappeared in all cases. No recurrence was observed and no re-intervention was needed. CONCLUSIONS: CO2 laser surgery provides several advantages over traditional surgery, as its systematic use in treating pre-invasive, benign, and congenital pathologies of the female lower genital tract reduces patient discomfort, improves short- and long-term outcomes, and optimizes cost-effectiveness.


Assuntos
Cistos/cirurgia , Hímen/anormalidades , Terapia a Laser/métodos , Lasers de Gás/uso terapêutico , Distúrbios Menstruais/cirurgia , Pólipos/cirurgia , Vagina/cirurgia , Adolescente , Adulto , Assistência Ambulatorial/métodos , Glândulas Vestibulares Maiores/patologia , Glândulas Vestibulares Maiores/cirurgia , Anormalidades Congênitas , Cistos/diagnóstico , Estudos de Viabilidade , Feminino , Seguimentos , Genitália Feminina/anormalidades , Genitália Feminina/patologia , Genitália Feminina/cirurgia , Humanos , Hímen/cirurgia , Distúrbios Menstruais/diagnóstico , Visita a Consultório Médico , Pólipos/diagnóstico , Vagina/anormalidades , Vagina/patologia , Adulto Jovem
9.
Eur Rev Med Pharmacol Sci ; 19(3): 365-71, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25720704

RESUMO

OBJECTIVE: To compare diagnostic accuracy of sonohysterography vs hysteroscopy in patients with benign uterine endocavitary findings. PATIENTS AND METHODS: This retrospective study evaluated 202 patients submitted to sonohysterography after transvaginal ultrasound examination suspicious for uterine endocavitary findings. Cytological sample was taken and analyzed from the fluid used to distend the uterine cavity. Of 202 patients enrolled for this study, 86 patients underwent gynaecological surgery, of whom 77 were treated with operative hysteroscopy and 9 with other gynaecological surgical techniques. Statistical analysis was performed to evaluate diagnostic agreement between sonohysterography vs hysteroscopy and cytology vs histology. RESULTS: Diagnostic concordance between sonohysterography and hysteroscopy was significant (k value 0.87). The correlation between cytological and histological findings had a moderate level of concordance (k value 0.49). CONCLUSIONS: Sonohysterography provides a diagnostic accuracy as well as hysteroscopy, therefore, it could be considered an alternative procedure in the diagnosis of benign uterine endocavitary findings.


Assuntos
Eletrocoagulação/métodos , Eletrocoagulação/normas , Histeroscopia/métodos , Histeroscopia/normas , Útero/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Histerossalpingografia/métodos , Histerossalpingografia/normas , Pessoa de Meia-Idade , Gravidez , Estudos Retrospectivos
10.
Eur Rev Med Pharmacol Sci ; 18(19): 2949-52, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25339491

RESUMO

OBJECTIVE: Vulvar intraepithelial neoplasia (VIN) is a premalignant lesion of the vulva. The incidence of VIN is increasing. The surgery is currently the gold standard therapy for VIN, but Imiquimod could be a completion to surgery. The aim of this study is to compare the overall complete response, the recurrence rate and the risk factors for recurrence among two groups of patients: women with high grade VIN underwent surgery and patients treated with surgery plus Imiquimod. PATIENTS AND METHODS: 80 patients with histologically diagnosed VIN 2/3 were enrolled in this prospective study. Our patients were divided into two groups: 40 women underwent surgery (A) and 40 patients were treated with surgery plus Imiquimod (B). All women had a 5-year follow-up. Recurrence rate and complete response were evaluated. The following patients' characteristics were analyzed: smoke, multifocal disease, multicentric disease, degree of the lesion. RESULTS: In the group A recurrence rate was 44.8%, in the group B it was 48.4%. In both groups the presence of multifocal lesions (p = 0.02) and VIN 3 (p = 0.006) before treatment was associated with a higher risk of recurrence. CONCLUSIONS: This study found that surgery remains the principal approach for VIN with regard to relapse and complete response since the treatment with Imiquimod associated with surgery didn't show a lower recurrence rate. Although the surgical treatments remain the best therapeutic option for VIN with regard to recurrence and overall complete response, the combined therapy seems to be an interesting modality, but further studies are needed.


Assuntos
Aminoquinolinas/administração & dosagem , Antineoplásicos/administração & dosagem , Carcinoma in Situ/tratamento farmacológico , Carcinoma in Situ/cirurgia , Neoplasias Vulvares/tratamento farmacológico , Neoplasias Vulvares/cirurgia , Administração Tópica , Carcinoma in Situ/diagnóstico , Terapia Combinada , Feminino , Humanos , Imiquimode , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/diagnóstico , Recidiva Local de Neoplasia/tratamento farmacológico , Recidiva Local de Neoplasia/cirurgia , Estudos Prospectivos , Fatores de Risco , Neoplasias Vulvares/diagnóstico
12.
Eur Rev Med Pharmacol Sci ; 17(7): 936-40, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23640441

RESUMO

BACKGROUND: Vulvar intraepithelial neoplasia (VIN) is a premalingnant condition. For long time, surgery was considered the first-line therapy in the treatment of high grade VIN. Imiquimod was recently introduced as an alternative to surgery. AIM: To compare the overall complete response, the recurrence rate and the risk factors for relapse among patients with VIN 2/3 treated with Imiquimod or surgical excision. PATIENTS AND METHODS: Eighty women who had histological diagnosis of VIN 2 and VIN 3 were enrolled in this prospective study. Patients immunocompromised, with recurrent VIN, with well differentiated type VIN or VIN 1 and women treated more than once were excluded from the study. Patients were divided into two groups: group A was treated with Imiquimod, group B underwent surgical excision. Patients' characteristics analyzed were: age, smoking, degree of the primary lesion, state of margins, multifocal disease. We have evaluated the recurrence rate, the relapse rate, and the overall complete response, considering as recurrence the onset of a lesion after an initial complete response to Imiquimod and/or after the surgical treatment and as relapse all patients who had a recurrence plus those with medical treatment failure. RESULTS: Multifocal lesions (p = 0.03) and VIN 3 (p = 0.002) were associated with a higher risk of relapse. The recurrence rate was higher in the group B (p = 0.009), but the relapse rate was higher in the group A (p = 0.04). The overall complete response was better in the group B (p = 0.04). CONCLUSIONS: Although the advent of new medical options can decrease the morbidity associated with invasive surgical procedures, surgical treatments remain the best treatment modality for VIN with regard to relapse and overall complete response.


Assuntos
Aminoquinolinas/administração & dosagem , Antineoplásicos/administração & dosagem , Carcinoma in Situ/terapia , Neoplasias Vulvares/terapia , Adulto , Carcinoma in Situ/patologia , Feminino , Seguimentos , Humanos , Imiquimode , Recidiva Local de Neoplasia , Pomadas , Neoplasias Vulvares/patologia
13.
Curr Med Chem ; 20(5): 671-93, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23210774

RESUMO

Protein kinase CK2 (Casein Kinase 2) is an essential, ubiquitous and highly pleiotropic protein kinase, implicated in several human diseases. In the last decade, several inhibitors of CK2, have been discovered and characterized to be ATP-competitive compounds. However, only one of them, CX-4945, has recently completed Phase I clinical trial as potential anticancer drug. In this review, we report all chemical classes of CK2 inhibitors available in literature, focusing our attention on conventional ATP-competitive and on non ATP-competitive inhibitors, which could represent a new frontier in CK2 inhibition and, consequently, a promising field of study in discovering new drug candidates.


Assuntos
Caseína Quinase II/antagonistas & inibidores , Caseína Quinase II/química , Inibidores de Proteínas Quinases/química , Inibidores de Proteínas Quinases/farmacologia , Animais , Humanos , Modelos Moleculares
14.
Biochim Biophys Acta ; 1824(12): 1366-73, 2012 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-22828320

RESUMO

Analyses of human phosphoproteome based on primary structure of the aminoacids surrounding the phosphor Ser/Thr suggest that a significant proportion of phosphosites is generated by a restricted number of acidophilic kinases, among which protein kinase CK2 plays a prominent role. Recently, new acidophilic kinases belonging to the Polo like kinase family have been characterized, with special reference to PLK1, PLK2, and PLK3 kinases. While some progress has been made in deciphering the PLK1-dependent phosphoproteome, very little is known about the targets of PLK2 and PLK3 kinases. In this report by using an in vitro approach, consisting of cell lysate phosphorylation, phosphoprotein separation by 2D gel electrophoresis and mass spectrometry, we describe the identification of new potential substrates of PLK2 and PLK3 kinases. We have identified and validated as in vitro PLK2 and PLK3 substrates HSP90, GRP-94, ß-tubulin, calumenin, and 14-3-3 epsilon. The phosphosites generated by PLK3 in these proteins have been identified by mass spectrometry analysis to get new insights about PLKs specificity determinants. These latter have been further corroborated by an in silico analysis of the PLKs substrate binding region.


Assuntos
Proteínas Serina-Treonina Quinases/metabolismo , Sequência de Aminoácidos , Células Cultivadas , Humanos , Espectrometria de Massas , Modelos Moleculares , Dados de Sequência Molecular , Fosforilação , Domínios e Motivos de Interação entre Proteínas , Homologia Estrutural de Proteína , Especificidade por Substrato , Proteínas Supressoras de Tumor
15.
Biotechniques ; 53(1)2012 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-26307252

RESUMO

While the great majority of Ser/Thr protein kinases are basophilic or proline directed, a tiny minority is acidophilic. The most striking example of such "acidophilic" kinases is CK2, whose sites are specified by numerous acidic residues surrounding the target one. However PLK2 and PLK3 kinases recognize an acidic consensus similar to CK2 when tested on peptide libraries. Here we describe optimal buffer conditions for PLK2 and 3 kinase activity assays and tools such as using GTP as a phosphate donor and the specific inhibitors CX-4945 and BI 2536, useful to discriminate between acidic phosphosites generated either by CK2 or by PLK2/PLK3.


Assuntos
Proteínas Serina-Treonina Quinases/classificação , Proteínas Serina-Treonina Quinases/metabolismo , Soluções Tampão , Células HEK293 , Humanos , Concentração de Íons de Hidrogênio , Naftiridinas , Fenazinas , Fosforilação , Inibidores de Proteínas Quinases , Proteínas Serina-Treonina Quinases/antagonistas & inibidores , Proteínas Serina-Treonina Quinases/química , Pteridinas , Transfecção
16.
Curr Med Chem ; 18(19): 2867-84, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21651492

RESUMO

Casein kinase 2 (CK2) is a ubiquitous, highly pleiotropic and essential protein kinase whose abnormally high constitutive activity has been implicated in several human diseases. In the last decade, several ATP competitive inhibitors of CK2, characterized by an in vitro activity that ranges from micromolar to nanomolar, have been discovered. However, until now only one drug candidate has been entered in Phase I clinical trial as a potential anticancer drug. Why this constitutively active kinase is so undruggable? Can ATP competitive inhibitors be considered the most promising drug candidates for the near future? In this review, we would like to underline how targeting binding sites outside the conventional ATP-binding could represent a new promising strategy to inhibit CK2 activity and, consequently, bear a great potentiality in discovering new drug candidates.


Assuntos
Caseína Quinase II/antagonistas & inibidores , Caseína Quinase II/química , Descoberta de Drogas/métodos , Inibidores de Proteínas Quinases/química , Inibidores de Proteínas Quinases/farmacologia , Animais , Sítios de Ligação/efeitos dos fármacos , Caseína Quinase II/metabolismo , Humanos , Modelos Moleculares
17.
Aliment Pharmacol Ther ; 28(4): 422-30, 2008 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-18498447

RESUMO

BACKGROUND: Iron-deficiency anaemia (IDA) is common in premenopausal women and menorrhagia is often considered responsible. Aim To evaluate prospectively the occurrence of bleeding and iron malabsorption related gastrointestinal (GI) diseases likely responsible of IDA in premenopausal women regardless of their menstrual flow. METHODS: One hundred and eighty-seven premenopausal women [median age 39 (20-56) years] irrespective of their menstrual flow underwent gastroscopy with gastric and duodenal biopsies and faecal occult blood test (FOBT). Patients over 50 years, positive 1st degree family history for colonic cancer and/or positive FOBT underwent colonoscopy too. RESULTS: Menorrhagia was present in 67.4% of premenopausal women. A possible GI cause of IDA was found in 129/187 patients; in 65.2% the cause of IDA was possibly related to iron malabsorption diseases. GI bleeding as a cause of IDA was found in seven patients. An exclusive GI cause of IDA was found in 26.7% of premenopausal women, whereas a possible GI cause was observed in 34.2% of menorrhagic premenopausal women. The main risk factor for the presence of likely GI causes was the presence of upper GI symptoms (OR 5.2: 95% CI = 1.6-16.4). CONCLUSIONS: Most premenopausal women had a possible upper GI cause of IDA because of diseases related to iron malabsorption. Menorrhagia and a GI cause coexist in one-third of women with iron-deficiency anaemia.


Assuntos
Anemia Ferropriva/etiologia , Síndromes de Malabsorção/complicações , Menorragia/complicações , Menstruação/fisiologia , Sangue Oculto , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Feminino , Ferritinas/sangue , Gastroscopia , Humanos , Pessoa de Meia-Idade , Pré-Menopausa/fisiologia , Estudos Prospectivos , Fatores de Risco , Saúde da Mulher
18.
G Chir ; 20(8-9): 335-7, 1999.
Artigo em Italiano | MEDLINE | ID: mdl-10444918

RESUMO

The Authors report their experience of two patients with bile leakage following videocholecystectomy (VLC) among a series of 163 cases. Reviewing the Literature, they analyze possible causes and mechanisms of bile spillage occurring after VCL. They also suggest some guidelines for a safe VLC, stressing the importance of the routinary placement of the sub-hepatic drainage to remove 48 hours to early detect possible bile leakages after surgery.


Assuntos
Bile , Colecistectomia Laparoscópica/efeitos adversos , Colelitíase/diagnóstico , Colangiografia , Colelitíase/cirurgia , Feminino , Humanos , Complicações Intraoperatórias , Masculino
19.
Hum Reprod ; 11(1): 117-20, 1996 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-8671172

RESUMO

To investigate the role of the 'male factor' in the pathogenesis of recurrent spontaneous abortion (RSA), especially sperm morphology abnormalities, 120 previously selected couples with unexplained RSA were studied for sperm parameters retrospectively and prospectively. The patients were subdivided into three subgroups, depending on their reproductive outcome during the 3 years of follow-up study: (i) 48 RSA couples who achieved a successful pregnancy; (ii) 39 RSA couples who experienced further abortions, and (iii) 33 RSA couples who experienced infertility during the follow-up period. A semen analysis was performed twice at the time of inclusion in this study, and twice again during the 3 year follow-up period. No significant differences in semen parameters were observed between RSA males and fertile controls. Instead, significant differences were observed between the group of RSA couples who experienced infertility during the follow-up and the other two groups (RSA couples who achieved successful pregnancy and RSA couples who experienced miscarriages and no live birth during the follow-up) for sperm concentration (P < 0.01 and P < 0.01 respectively), sperm motility (P < 0.01 and P < 0.01 respectively) and sperm morphology abnormalities (P < 0.01 and P < 0.01 respectively). Sperm morphology abnormalities do not seem to be involved in determining RSA; instead, they are an aetiological factor in determining infertility in patients, along with the other semen parameters, in the RSA couple's subsequent reproductive life. Semen analysis is an important test in the clinical management of RSA couples.


Assuntos
Aborto Habitual/etiologia , Sêmen/fisiologia , Espermatozoides/anormalidades , Espermatozoides/fisiologia , Aborto Habitual/patologia , Adulto , Feminino , Seguimentos , Humanos , Infertilidade/etiologia , Infertilidade/patologia , Masculino , Gravidez , Contagem de Espermatozoides , Motilidade dos Espermatozoides
20.
Minerva Gastroenterol Dietol ; 39(2): 49-55, 1993 Jun.
Artigo em Italiano | MEDLINE | ID: mdl-8364101

RESUMO

The authors report their views on the treatment of unoperable neoplastic esophago-gastric stenoses with Nitinol prostheses. Despite a number of advantages (reduced trauma, greater tolerability) in relation to plastic prostheses, the paper highlights some problems (difficulty of unfastening, incomplete opening) which may be eliminated by improved materials.


Assuntos
Ligas , Estenose Esofágica/cirurgia , Próteses e Implantes , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
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