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1.
Tumour Biol ; 45(1): 127-146, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37980588

RESUMO

BACKGROUND: Hotspot mutations occurring in the p110α domain of the PIK3CA gene, specifically p110αH1047R/L increase tumor metastasis and cell motility in triple-negative breast cancer (TNBC). These mutations also affect the transcriptional regulation of ΔNp63α, a significant isoform of the p53 protein involved in cancer progression. This study attempts to investigate the transcriptional impact of p110αH1047R/L mutations on the PIK3CA/ΔNp63α complex in TNBC carcinogenesis. METHODS: We performed site-directed mutagenesis to introduce p110αH1047R/L mutations and evaluated their oncogenic effects on the growth, invasion, migration, and apoptosis of three different TNBC cell lines in vitro. We investigated the impact of these mutations on the p110α/ΔNp63α complex and downstream transcriptional signaling pathways at the gene and protein levels. Additionally, we used bioinformatics techniques such as molecular dynamics simulations and protein-protein docking to gain insight into the stability and structural changes induced by the p110αH1047R/L mutations in the p110α/ΔNp63α complex and downstream signaling pathway. RESULTS: The presence of PIK3CA oncogenic hotspot mutations in the p110α/ΔNp63α complex led to increased scattering of TNBC cells during growth, migration, and invasion. Our in vitro mutagenesis assay showed that the p110αH1047R/L mutations activated the PI3K-Akt-mTOR and tyrosine kinase receptor pathways, resulting in increased cell proliferation, invasion, and apoptosis in TNBC cells. These mutations decreased the repressing effect of ΔNp63α on the p110α kinase domain, leading to the enhancement of downstream signaling pathways of PI3K and tyrosine kinase receptors and oncogenic transformation in TNBC. Additionally, our findings suggest that the physical interaction between the DNA binding domain of ΔNp63α and the kinase domain of p110α may be partially impaired, potentially leading to alterations in the conformation of the p110α/ΔNp63α complex. CONCLUSION: Our findings suggest that targeting the p110αH1047R/L mutations in TNBC could be a promising strategy for developing transcriptional-based therapies. Restoring the interaction between ΔNp63α and the p110α kinase domain, which is disrupted by these mutations, may provide a new approach to treating TNBC.


Assuntos
Neoplasias de Mama Triplo Negativas , Humanos , Neoplasias de Mama Triplo Negativas/genética , Fosfatidilinositol 3-Quinases , Mutação , Transdução de Sinais/genética , Classe I de Fosfatidilinositol 3-Quinases/genética
2.
BMC Pregnancy Childbirth ; 22(1): 483, 2022 Jun 13.
Artigo em Inglês | MEDLINE | ID: mdl-35698093

RESUMO

PURPOSE: To explore changes in telomere length (TL) and mitochondrial copy number (mtDNA-CN) in preeclampsia (PE) and to evaluate the combined effect of maternal TL and mtDNA-CN on PE risk. METHODS: A case-control study of 471 subjects (130 PE cases and 341 age frequency matched controls with gestational age rank from 24 to 42 weeks) was conducted in Nanjing Drum Tower Hospital, Jiangsu Province of China. Relative telomere length (RTL) and mtDNA-CN were measured using quantitative polymerase chain reaction (qPCR), and PE risk was compared between groups by logistic regression analyses. RESULTS: PE patients displayed longer RTL (0.48 versus 0.30) and higher mtDNA-CN (3.02 versus 2.00) in maternal blood as well as longer RTL (0.61 versus 0.35) but lower mtDNA-CN (1.69 versus 5.49) in cord blood (all p < 0.001). Exercise during pregnancy exerted an obvious effect of maternal telomere length prolongation. Multiparous women with folic acid intake during early pregnancy and those who delivered vaginally showed longer telomere length, while those factors imposed no or opposite effect on RTL in PE cases. Furthermore, RTL and mtDNA-CN were positively correlated in controls (in maternal blood r = 0.18, p < 0.01; in cord blood r = 0.19, p < 0.001), but this correlation was disrupted in PE patients in both maternal blood and cord blood. Longer maternal RTL and higher mtDNA-CN were associated with a higher risk of PE, and the ROC curve of RTL and mtDNA-CN for predicting PE risk presented an AUC of 0.755 (95% CI: 0.698-0.812). CONCLUSIONS: The interaction of TL and mtDNA-CN may play an important role in the pathogenesis of PE and could be a potential biomarker of PE risk.


Assuntos
DNA Mitocondrial , Pré-Eclâmpsia , Estudos de Casos e Controles , Variações do Número de Cópias de DNA , DNA Mitocondrial/genética , Feminino , Humanos , Lactente , Período Periparto , Pré-Eclâmpsia/genética , Gravidez , Telômero
3.
BMC Cancer ; 20(1): 63, 2020 Jan 28.
Artigo em Inglês | MEDLINE | ID: mdl-31992250

RESUMO

BACKGROUND: Cervical cancer is the most common cancer and the leading cause of cancer death among women in Tanzania. Knowledge of and willingness to receive a cervical cancer screening are important determinants of prevention. This study aimed to describe women's awareness of cervical cancer and to explore the attitudes toward, acceptability of and barriers to cervical cancer screening (CCS) in Zanzibar. METHODS: A cross-sectional study was conducted from March to June 2018 involving 1483 women from 10 districts in Zanzibar who responded to questionnaires concerning their general demo-graphic characteristics, screening willingness and awareness of cervical cancer. Chi-square tests, analysis of variance (ANOVA) and stepwise multiple regression were conducted using STATA 15.1 software. RESULTS: The average total knowledge score (TKS) was 7.84 ± 5.32 on a 23-point scale. Educational level and family income were positively correlated with the TKS. Previous schistosomiasis history and family genetic disease history were strong predictors of screening willingness. Women were less likely to be screened freely if they had 7 or more deliveries and were unaware of any previous family tumor history. Age and educational level were negatively associated non-free screening willingness, while family income was positively associated; being divorced/widowed or single and being unaware of any previous family tumor history were predictors of screening reluctance, while previous disease history was a strong predictor of non-free screening willingness. Fear of screening and inconvenience were the primary concerns among the Zanzibari interviewees. Compared to the 20-49 age group, more women in the less than 20 and 50 or more age groups thought cervical cancer screening was not necessary. The highest rate of cognitive accuracy in regard to cervical cancer warning signs and risk factors was only 37.76%. CONCLUSIONS: The findings revealed that knowledge of cervical cancer was poor. Educational level, family income and awareness of previous disease history were significant influencing factors of screening uptake. Specific awareness programs to increase knowledge of cervical cancer and screening willingness should be designed and implemented in the public without delay, especially for younger and elderly women.


Assuntos
Detecção Precoce de Câncer/psicologia , Conhecimentos, Atitudes e Prática em Saúde , Neoplasias do Colo do Útero/diagnóstico , Adolescente , Adulto , Idoso , Estudos Transversais , Feminino , Humanos , Pessoa de Meia-Idade , Aceitação pelo Paciente de Cuidados de Saúde , Fatores de Risco , Inquéritos e Questionários , Tanzânia , Neoplasias do Colo do Útero/psicologia , Saúde da Mulher , Adulto Jovem
4.
Nanomedicine ; 14(7): 2167-2178, 2018 10.
Artigo em Inglês | MEDLINE | ID: mdl-30017962

RESUMO

Effective treatment and real-time monitoring of hepatic cancer are essential. A multifunctional calcium phosphate nanoparticles loading chemotherapeutic agent doxorubicin and magnetic resonance imaging contrast agent diethylenetriaminepentaacetic acid gadolinium (A54-CaP/Gd-DTPA/DOX) was developed for visual targeted therapy of hepatic cancer via T1-weighted MRI in real-time. A54-CaP/Gd-DTPA/DOX exhibited a higher longitudinal relaxivity (6.02 mM-1 s-1) than commercial MR contrast agent Gd-DTPA (3.3765 mM-1 s-1). The DOX release from the nanoparticles exhibited a pH dependent behavior. The cellular uptake results showed that the internalization of A54-CaP/Gd-DTPA/DOX into BEL-7402 cells was1.9-fold faster than that of HepG2 cells via A54 binding. In vivo experiments presented that A54-CaP/Gd-DTPA/DOX had higher distribution and longer retention time in tumor tissue than CaP/Gd-DTPA/DOX and free DOX, and also displayed great antitumor efficacy (95.38% tumor inhibition rate) and lower toxicity. Furthermore, the Gd-DTPA entrapped in the nanoparticles could provide T1-weighted MRI for real-time monitoring the progress of tumor treatment.


Assuntos
Fosfatos de Cálcio/química , Doxorrubicina/farmacologia , Neoplasias Hepáticas/tratamento farmacológico , Imageamento por Ressonância Magnética/métodos , Nanopartículas/administração & dosagem , Fragmentos de Peptídeos/química , Animais , Antibióticos Antineoplásicos/administração & dosagem , Antibióticos Antineoplásicos/farmacologia , Apoptose/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Meios de Contraste , Doxorrubicina/administração & dosagem , Feminino , Gadolínio DTPA/química , Humanos , Neoplasias Hepáticas/metabolismo , Neoplasias Hepáticas/patologia , Camundongos , Camundongos Endogâmicos BALB C , Camundongos Nus , Terapia de Alvo Molecular , Nanopartículas/química , Células Tumorais Cultivadas , Ensaios Antitumorais Modelo de Xenoenxerto
5.
PLoS One ; 18(7): e0285806, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37432950

RESUMO

To discover vulnerabilities associated with dermokine (DMKN) as a new trigger of the epithelial-mesenchymal transition (EMT) -driven melanoma, we undertook a genome-wide genetic screening using transgenic. Here, we showed that DMKN expression could be constitutively increased in human malignant melanoma (MM) and that this correlates with poor overall survival in melanoma patients, especially in BRAF-mutated MM samples. Furthermore, in vitro, knockdown of DMKN inhibited the cell proliferation, migration, invasion, and apoptosis of MM cancer cells by the activation of ERK/MAPK signaling pathways and regulator of STAT3 in downstream molecular. By interrogating the in vitro melanoma dataset and characterization of advanced melanoma samples, we found that DMKN downregulated the EMT-like transcriptional program by disrupting EMT cortical actin, increasing the expression of epithelial markers, and decreasing the expression of mesenchymal markers. In addition, whole exome sequencing was presented with p.E69D and p.V91A DMKN mutations as a novel somatic loss of function mutations in those patients. Moreover, our purposeful proof-of-principle modeled the interaction of ERK with p.E69D and p.V91A DMKN mutations in the ERK-MAPK kinas signaling that may be naturally associated with triggering the EMT during melanomagenesis. Altogether, these findings provide preclinical evidence for the role of DMKN in shaping the EMT-like melanoma phenotype and introduced DMKN as a new exceptional responder for personalized MM therapy.


Assuntos
Melanoma , Neoplasias Cutâneas , Humanos , Transição Epitelial-Mesenquimal/genética , Melanoma/genética , Mutação , Neoplasias Cutâneas/genética , Melanoma Maligno Cutâneo
6.
Tissue Eng Part A ; 29(3-4): 112-125, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-36305369

RESUMO

Severe uterine injury is a major cause of endometrial scar formation and female infertility. At present, the methods for accelerating injured uterine healing are still lacking. Genetic engineering modification of mesenchymal stem cells (MSCs) has been shown great promise in preclinical studies on regeneration. Here, we constructed a type of umbilical cord MSCs (UC-MSCs) with overexpressed basic fibroblast growth factor (UCMSC-bFGF) and investigated the effects of the UCMSC-bFGF/scaffold on functional regeneration of the full-thickness defect uterus of the rat model. At days 7, 14, and 30 after treatments, the rats were killed and the injured uterus was observed. The structural and functional change of uterine was assessed by hematoxylin and eosin staining, immunohistochemical staining, and fertility experiment. The UCMSC-bFGF/scaffold group exhibited anti-inflammatory effect, and the number of CD45+ cell in the UCMSC-bFGF/scaffold group was significantly less than that in UC-MSCs/scaffold group and scaffold group, but higher than sham-operated group at day 7 postmending. At day 14, the UCMSC-bFGF/scaffold group exhibited dramatically proangiogenesis efficacy compared with UC-MSCs/scaffold group and scaffold group. At day 30, the endometrial thickness, structure of myometrium, and blood vessels in the UCMSC-bFGF/scaffold were better than those of the UC-MSCs/scaffold group and scaffold group, even close to sham-operated group. Implantation rate at injury region postoperation 30 days in the UCMSC-bFGF/scaffold group (8/16) was significantly higher than that in UC-MSCs/scaffold group (1/16) and scaffold group (0/16). Taken together, the UCMSC-bFGF/scaffold system suppressed local inflammation, promoted angiogenesis, and accelerated regeneration of the defected uterine wall, and thereby greatly shortened the healing time of the injured uterus. Impact statement In this study, we used umbilical cord mesenchymal stem cells (UC-MSCs) with stably overexpressed basic fibroblast growth factor (UCMSC-bFGF) to repair the full-thickness defect uterine wall of the rat model and found that the UCMSC-bFGF/scaffold system suppressed early acute inflammation after uterus injury, promoted angiogenesis, and accelerated regeneration of the injured uterine wall.


Assuntos
Transplante de Células-Tronco Mesenquimais , Células-Tronco Mesenquimais , Ratos , Feminino , Animais , Fator 2 de Crescimento de Fibroblastos , Útero , Endométrio/metabolismo , Cordão Umbilical , Transplante de Células-Tronco Mesenquimais/métodos
7.
Placenta ; 118: 55-65, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-35032792

RESUMO

INTRODUCTION: Junctional adhesion molecule-C (JAM-C) is an important regulator of many physiological processes, ranging from maintenance of tight junction integrity of epithelia to regulation of cell migration, homing and proliferation. Preeclampsia (PE) is a trophoblast-related syndrome with abnormal placentation and insufficient trophoblast invasion. However, the role of JAM-C in normal pregnancy and PE pathogenesis is unknown. METHODS: The expression and location of JAM-C in placentas were determined by quantitative real-time PCR (qRT-PCR), western blot and immunohistochemistry. The expression of differentiation and invasion markers were detected by qRT-PCR or western blot. The effects of JAM-C on migration and invasion of trophoblasts were examined using wound-healing and invasion assays. Additionally, a mouse model was established by injection of JAM-C-positive adenovirus to explore the effects of JAM-C in vivo. RESULTS: In normal pregnancy, JAM-C was preferentially expressed on cytotrophoblast (CTB) progenitors and progressively decreased when acquiring invasion properties with gestation advance. However, in PE patients, the expression of JAM-C was upregulated in extravillous trophoblasts (EVTs) and syncytiotrophoblasts (SynTs) of placentas. It was also demonstrated that JAM-C suppressed the differentiation of CTBs into EVTs in vitro. Consistently, JAM-C inhibited the migration and invasion capacities of EVTs through GSK3ß/ß-catenin signaling pathway. Importantly, Ad-JAMC-infected mouse model mimicked the phenotype of human PE. DISCUSSION: JAM-C plays an important role in normal placentation and upregulated JAM-C in placentas contributes to PE development.


Assuntos
Moléculas de Adesão Celular/metabolismo , Diferenciação Celular , Modelos Animais de Doenças , Pré-Eclâmpsia/metabolismo , Trofoblastos/fisiologia , Animais , Estudos de Casos e Controles , Moléculas de Adesão Celular/genética , Movimento Celular , Feminino , Glicogênio Sintase Quinase 3 beta/metabolismo , Camundongos Endogâmicos C57BL , Gravidez , beta Catenina/metabolismo
8.
World J Clin Cases ; 9(35): 10979-10993, 2021 Dec 16.
Artigo em Inglês | MEDLINE | ID: mdl-35047608

RESUMO

BACKGROUND: Malignant obstructive jaundice (MOJ) is a common pathologic manifestation of malignant biliary obstruction. Recently, several clinical trials have explored the clinical effectiveness of intraluminal 125I seed-based brachytherapy for MOJ patients, and various outcomes have been reported. AIM: To assess the efficacy and safety of percutaneous biliary stents with 125I seeds compared to conventional metal stents in patients with unresectable MOJ. METHODS: A systematic search of English-language databases (PubMed, Embase, Cochrane Library, and Web of Science) was performed to identify studies published prior to June 2020 that compared stents with or without 125I seeds in the treatment of unresectable MOJ. The outcomes analyzed included primary outcomes (stent patency and overall survival) and secondary outcomes (complications and liver function parameters). RESULTS: Six randomized controlled trials and four retrospective studies involving 875 patients were eligible for the analysis. Of the 875 included patients, 404 were treated with 125I seed stents, while 471 were treated with conventional stents. Unadjusted pooled analysis demonstrated that compared to conventional stents, 125I seed stents extended the stent patency time [hazard ratio (HR) = 0.36, 95% confidence interval (CI) = 0.28-0.45, P < 0.0001] and overall survival period (HR = 0.52, 95%CI = 0.42-0.64, P < 0.00001). Subgroup analyses based on the type of 125I seed stent and type of study design showed consistent results. However, there were no significant differences in the occurrence of total complications [odds ratio (OR) = 1.12, 95%CI = 0.75-1.67, P = 0.57], hemobilia (OR = 1.02, 95%CI = 0.45-2.3, P = 0.96), pancreatitis (OR = 1.79, 95%CI = 0.42-7.53, P = 0.43), cholangitis (OR = 1.13, 95%CI = 0.60-2.13, P = 0.71), or pain (OR = 0.67, 95%CI = 0.22-2, P = 0.47). In addition, there were no reductions in the levels of serum indices, including total bilirubin [mean difference (MD) = 10.96, 95%CI = -3.56-25.49, P = 0.14], direct bilirubin (MD = 7.37, 95%CI = -9.76-24.5, P = 0.4), alanine aminotransferase (MD = 7.52, 95%CI = -0.71-15.74, P = 0.07), and aspartate aminotransferase (MD = -4.77, 95%CI = -19.98-10.44, P = 0.54), after treatment. Publication bias was detected regarding the outcome overall survival; however, the conclusions were not changed after the adjustment. CONCLUSION: Placement of stents combined with brachytherapy using 125I seeds contributes to a longer stent patency and higher overall survival than placement of conventional stents without extra complications or severe liver damage. Thus, it can be considered an effective and safe treatment for unresectable MOJ.

9.
Biomater Sci ; 8(7): 1961-1972, 2020 Mar 31.
Artigo em Inglês | MEDLINE | ID: mdl-32064471

RESUMO

The development of magnetic resonance imaging (MRI) contrast agents with high sensitivity and good biocompatibility is of great value for the diagnosis of primary hepatocellular carcinoma (HCC). Here, a novel MRI contrast agent based on calcium phosphate (CaP) nanoparticles modified with a liver cancer cell targeting peptide A54 (A54-CaP) was fabricated. The T1-positive contrast agent Gd-DTPA was encapsulated inside the nanoparticles (A54-CaPNPs), with a mean diameter of 30 nm and a high encapsulation efficiency of 92.73%. The A54-CaPNP solution exhibited higher longitudinal relaxivity (6.07 mM-1 s-1) than that of the clinically used MRI contrast agent Gd-DTPA (3.56 mM-1 s-1). A much higher accumulation of the nanoparticles in the liver cells was observed, which was directed by the A54 targeting peptide. Furthermore, the MRI diagnostic efficiency of A54-CaPNPs was systematically investigated in an orthotopic liver cancer model and primary HCC model. In vivo MRI experiments showed that A54-CaPNPs had higher sensitivity in the BEL-7402 orthotopic liver cancer model with a more remarkable contrast enhancement and a longer imaging time compared to those without A54 modification. Moreover, the experiments on primary HCC models suggested that A54-CaPNPs showed greatly enhanced MR imaging performance in comparison with Gd-DTPA. These results suggest that A54-CaPNPs possess great potential to enable the non-invasive early diagnosis of primary HCC for timely surgical resection.


Assuntos
Fosfatos de Cálcio/química , Carcinoma Hepatocelular/diagnóstico por imagem , Peptídeos Penetradores de Células/administração & dosagem , Meios de Contraste/administração & dosagem , Gadolínio/química , Neoplasias Hepáticas/diagnóstico por imagem , Animais , Linhagem Celular Tumoral , Peptídeos Penetradores de Células/química , Meios de Contraste/química , Detecção Precoce de Câncer , Feminino , Células Hep G2 , Humanos , Imageamento por Ressonância Magnética , Masculino , Camundongos , Nanopartículas , Transplante de Neoplasias , Tamanho da Partícula
10.
Sci Rep ; 9(1): 8483, 2019 06 11.
Artigo em Inglês | MEDLINE | ID: mdl-31186510

RESUMO

Telomere length (TL) is linked to various age-related diseases, but little is known about telomeres in gestational diabetes mellitus (GDM). We surveyed 509 subjects (113 GDM patients and 396 frequency matched controls) in Nanjing Drum Tower Hospital, Jiangsu province of eastern China. Relative telomere length (RTL) of genomic DNA extracted from peripheral blood leukocytes was measured using quantitative polymerase chain reaction (qPCR). Odds ratios (OR) and 95% confidence interval (CI) of GDM risk were calculated across tertiles of RTL using logistic regression model. Lipid parameters during the third trimesters of gestation (after 32 weeks) were collected from medical records. The general linear correlation test was used to explore the associations of lipid parameters with RTL. Our results showed that the RTL in GDM patients were significantly shorter than controls (0.302 ± 0.112 vs. 0.336 ± 0.164, P = 0.046). However, the GDM risk was significantly increased in subjects with median RTL (adjusted OR [aOR]: 1.936, 95% CI: 1.086, 3.453, P = 0.025) and the shortest RTL (aOR: 1.795, 95% CI: 1.004, 3.207, P = 0.048), compared to subjects with longest RTL. We also demonstrated that the lipid ratios (TC/TG, LDL/TG, HDL/TG, LDL/TC, TC/LDL) were significantly associated with RTL among controls. Overall, the present study indicated that attrition of telomeres would increase GDM risk among pregnant women, and the altered lipid levels may play an important role in RTL related GDM risk and pathogenesis.


Assuntos
Povo Asiático , Diabetes Gestacional/sangue , Lipídeos/sangue , Homeostase do Telômero , Adulto , Estudos de Casos e Controles , Feminino , Humanos , Gravidez , Fatores de Risco
11.
Sci Rep ; 6: 38729, 2016 12 08.
Artigo em Inglês | MEDLINE | ID: mdl-27929092

RESUMO

Telomere length varies considerably among individuals. It is highly heritable and decreases with ageing or ageing related diseases. Recently, genome-wide association studies (GWAS) have identified several genetic loci associated with telomere length in adults. However, it is unclear whether these loci represent the genetic basis of telomere length or determine the individual susceptibility to shortening during growth process. Using DNA extracted from peripheral and cord blood of 444 mother-newborn pairs from a Chinese population, we measured relative telomere length (RTL) and genotyped eight known telomere length related variants that were initially identified in populations of European descent. We observed the T allele of rs10936599 and the T allele of rs2736100 were norminally associated with shorter RTL (P = 0.041 and 0.046, respectively) in maternal samples. Furthermore, the Weighted genetic score (WGS) of eight variants was significantly associated with RTL in maternal samples (R2 = 0.012, P = 0.025). However, we didn't detect any significant associations for any individual variant or the combined WGS with RTL in newborns. These findings didn't support the hypothesis that telomere length related loci may affect telomere length at birth, and we suggested that these loci may play a role in telomere length modification during life course.


Assuntos
Telômero , Adulto , Alelos , China , DNA/sangue , Feminino , Estudo de Associação Genômica Ampla , Humanos , Recém-Nascido , Gravidez , Adulto Jovem
12.
Hua Xi Kou Qiang Yi Xue Za Zhi ; 22(3): 214-5, 2004 Jun.
Artigo em Zh | MEDLINE | ID: mdl-15293467

RESUMO

OBJECTIVE: The purpose of this article was to observe the effect of Vitapex Paste in apexilication. METHODS: 64 younger permanent teeth with underdeveloped apex and necrotic pulp were randomly selected. After root canals were prepared and sterilized, Vitapex paste was used in the apexification. All the teeth were observed for three years. RESULTS: 24 teeth (37.5%) were successful, 37 teeth (57.81%) were progressive, 3 teeth (4.69%) were failed. Altogether 61 teeth were effective, the effective rate was 95.31%. CONCLUSION: Vitapex paste was effective for the younger permanent teeth in the apexification.


Assuntos
Hidróxido de Cálcio/uso terapêutico , Silicones/uso terapêutico , Ápice Dentário/efeitos dos fármacos , Adolescente , Criança , Combinação de Medicamentos , Feminino , Seguimentos , Humanos , Masculino , Materiais Restauradores do Canal Radicular/uso terapêutico , Ápice Dentário/crescimento & desenvolvimento
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