Genetics and Molecular Biology最新文献

Di-n-butyl and di-iso-pentyl phthalates and their mixture increase oxidative stress and embryo-larval malformations in zebrafish (Danio rerio). 邻苯二甲酸二丁酯和邻苯二甲酸二异戊酯及其混合物增加斑马鱼的氧化应激和胚胎-幼虫畸形（Danio rerio）。

IF 1.7 4区生物学

Genetics and Molecular Biology Pub Date : 2025-06-02 eCollection Date: 2025-01-01 DOI: 10.1590/1678-4685-GMB-2024-0082

Juliana Roratto Lirola, Tathyana Benetis Piau, Daniela Moraes Leme, Anderson Joel Martino Andrade, Izonete Cristina Guiloski, Helena Cristina Silva de Assis, Cesar Koppe Grisolia, Marta Margarete Cestari

{"title":"Di-n-butyl and di-iso-pentyl phthalates and their mixture increase oxidative stress and embryo-larval malformations in zebrafish (Danio rerio).","authors":"Juliana Roratto Lirola, Tathyana Benetis Piau, Daniela Moraes Leme, Anderson Joel Martino Andrade, Izonete Cristina Guiloski, Helena Cristina Silva de Assis, Cesar Koppe Grisolia, Marta Margarete Cestari","doi":"10.1590/1678-4685-GMB-2024-0082","DOIUrl":"10.1590/1678-4685-GMB-2024-0082","url":null,"abstract":"Different phthalate compounds, known as emerging contaminants, such as Di-n-butyl (DBP) and di-iso-pentyl (DiPeP) phthalates, have been found in aquatic environments and are widely used as additives to increase the flexibility of plastics. This study intended to evaluate the toxicity in zebrafish embryos and larvae of DBP and DiPeP, as well as the mixture of the two compounds. Fish embryo toxicity, neurotoxicity, oxidative stress, and genotoxicity studies were carried out in Danio rerio (zebrafish) embryos and larvae. Fish were exposed to DBP and DiPeP in concentrations ranging from 0.001 to 0.125 mg/L and also a combination of compounds DBP + DiPeP (1:1 MIX). DBP caused mortality and embryo malformations from 0.062 mg/L, DiPeP at 0.125 mg/L and the mixture at 0.031 mg/L, indicating the potential toxicity of these phthalates. Isolated phthalates and in mixture induced neurotoxicity and oxidative stress, at low concentrations in zebrafish larvae. No genotoxicity was found through comet assay in larvae. DBP was more toxic than DiPeP, and the mixture was more toxic than both phthalates when tested in isolation, showing some kind of interaction.","PeriodicalId":12557,"journal":{"name":"Genetics and Molecular Biology","volume":"48 2","pages":"e20240082"},"PeriodicalIF":1.7,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12143589/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144198836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inferring the historical demography of southern African cheetahs (Acinonyx jubatus) using Bayesian analyses of molecular genetic data. 利用分子遗传数据的贝叶斯分析推断南部非洲猎豹（Acinonyx jubatus）的历史人口统计。

IF 1.7 4区生物学

Genetics and Molecular Biology Pub Date : 2025-05-19 eCollection Date: 2025-01-01 DOI: 10.1590/1678-4685-GMB-2024-0253

Ezequiel Chimbioputo Fabiano, Sandro Luis Bonatto, Anne Schmidt-Küntzel, Stephen J O'Brien, Laurie Marker, Eduardo Eizirik

{"title":"Inferring the historical demography of southern African cheetahs (Acinonyx jubatus) using Bayesian analyses of molecular genetic data.","authors":"Ezequiel Chimbioputo Fabiano, Sandro Luis Bonatto, Anne Schmidt-Küntzel, Stephen J O'Brien, Laurie Marker, Eduardo Eizirik","doi":"10.1590/1678-4685-GMB-2024-0253","DOIUrl":"10.1590/1678-4685-GMB-2024-0253","url":null,"abstract":"The contemporary genetic diversity of the cheetah (Acinonyx jubatus) has been the focus of several studies, which have revealed very low levels of variation. Different hypotheses have been proposed to explain this pattern of low diversity, and require additional scrutiny. Here, we used published microsatellite data and coalescence-based analytical methods to explore the historical demography of the largest free-ranging cheetah population, aiming to assess whether present-day diversity may have been impacted by a historical demographic decline. Our results support the hypothesis of a historical (and most likely gradual) demographic decline over the past ~10,000 years, leading to a present-day N e ranging from 700 to 1,600 individuals. This decline was likely induced by climate-driven vegetational shifts affecting habitat suitability and possibly also interspecies interactions with prey and competitors. These results help clarify the demographic history of cheetahs in southern Africa and its impact on the current genetic diversity of this population.","PeriodicalId":12557,"journal":{"name":"Genetics and Molecular Biology","volume":"48 2","pages":"e20240253"},"PeriodicalIF":1.7,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12091599/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144131890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Oral microbiota dysbiosis in pediatric patients undergoing treatment for acute lymphoid leukemia a preliminary study. 儿科急性淋巴细胞白血病患者口腔微生物群失调的初步研究。

IF 1.7 4区生物学

Genetics and Molecular Biology Pub Date : 2025-05-16 eCollection Date: 2025-01-01 DOI: 10.1590/1678-4685-GMB-2023-0359

André Vieira Souza, Leonardo Vinícius Barbosa, Alejandra Adriana Cardoso de Castro, Edna Kakitani Carboni, Flora Mitie Watanabe, Roberto Rossati, Libera Maria Dalla Costa, Dany Mesa, Cleber Machado-Souza

{"title":"Oral microbiota dysbiosis in pediatric patients undergoing treatment for acute lymphoid leukemia a preliminary study.","authors":"André Vieira Souza, Leonardo Vinícius Barbosa, Alejandra Adriana Cardoso de Castro, Edna Kakitani Carboni, Flora Mitie Watanabe, Roberto Rossati, Libera Maria Dalla Costa, Dany Mesa, Cleber Machado-Souza","doi":"10.1590/1678-4685-GMB-2023-0359","DOIUrl":"10.1590/1678-4685-GMB-2023-0359","url":null,"abstract":"Acute lymphoblastic leukemia (ALL) stands out as the most prevalent neoplasm during childhood, characterized by the rapid production of abnormal lymphoid cells. Chemotherapy administered to these patients may induce a substantial imbalance in the oral microbiota. A prospective pediatric study encompassing a control group (without ALL) and ALL patients at two treatment stages (pre-induction and consolidation) was conducted. Clinical and laboratory data were meticulously collected. Moreover, DNA from saliva samples was extracted for 16S rRNA sequencing. Clinical data revealed a heightened incidence of oral mucositis during the consolidation phase. Analysis of alpha biodiversity (observed taxa) exhibited a significant reduction in bacterial richness among patients in the consolidation phase. Network analysis identified key taxa during this phase, namely Neisseria flavescens, Prevotella melaninogenica and Porphyromonas. The findings underscore the substantial impact of ALL treatment on the oral microbiota composition, indicating diminished bacterial diversity and an elevated prevalence of oral mucositis.","PeriodicalId":12557,"journal":{"name":"Genetics and Molecular Biology","volume":"48 2","pages":"e20230359"},"PeriodicalIF":1.7,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12083558/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144077349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

DNA damage repair-related methylated genes RRM2 and GAPDH are prognostic biomarkers associated with immunotherapy for lung adenocarcinoma. DNA损伤修复相关甲基化基因RRM2和GAPDH是与肺腺癌免疫治疗相关的预后生物标志物。

IF 1.7 4区生物学

Genetics and Molecular Biology Pub Date : 2025-05-09 eCollection Date: 2025-01-01 DOI: 10.1590/1678-4685-GMB-2024-0138

Xinru Mao, Shaban Eljali Saad, Nung Kion Lee, Isabel Lim Fong

{"title":"DNA damage repair-related methylated genes RRM2 and GAPDH are prognostic biomarkers associated with immunotherapy for lung adenocarcinoma.","authors":"Xinru Mao, Shaban Eljali Saad, Nung Kion Lee, Isabel Lim Fong","doi":"10.1590/1678-4685-GMB-2024-0138","DOIUrl":"https://doi.org/10.1590/1678-4685-GMB-2024-0138","url":null,"abstract":"Research has highlighted the significant role of methylated genes associated with DNA damage repair in pathogenesis of Lung adenocarcinoma (LUAD). However, the potential of DNA damage repair-related gene (DDRG) methylation as a prognostic biomarker remains underexplored. This study aimed to assess the prognostic value of methylated DDRGs in LUAD. Analysis of the TCGA-LUAD dataset revealed differentially expressed genes (DEGs) and differentially methylated genes (DE-MGs), from which methylated DE-DDRGs were identified. An independent prognostic risk model was constructed based on these methylated DE-DDRGs by integrating risk scores with clinical features. Additionally, the study examined responses to immunotherapy. Results indicated that CLU exhibited hypermethylation and elevated expression in LUAD tissues, while eight other genes (BUB1B, SHCBP1, RRM2, RPL39L, TRIP13, GAPDH, ENO1, and CENPM) showed high expression and hypomethylation. Among these, RRM2 and GAPDH were significantly linked to poorer overall survival. Furthermore, single-sample gene set enrichment analysis (ssGSEA) revealed that patients with LUAD in the high-risk group had lower immune scores and less immune cell infiltration. TIDE analysis suggested that patients in the low-risk group may exhibit greater sensitivity to immune checkpoint inhibitor therapy. In conclusion, RRM2 and GAPDH represent promising prognostic and immunotherapeutic biomarkers, offering new avenues for LUAD treatment strategies.","PeriodicalId":12557,"journal":{"name":"Genetics and Molecular Biology","volume":"48 2","pages":"e20240138"},"PeriodicalIF":1.7,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12063672/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143983175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fecal Virome of Southeastern Maned Sloth (Bradypus crinitus) (Pilosa: Bradypodidae). 东南鬃懒粪便病毒（毛懒科）。

IF 1.7 4区生物学

Genetics and Molecular Biology Pub Date : 2025-05-09 eCollection Date: 2025-01-01 DOI: 10.1590/1678-4685-GMB-2024-0183

Amanda Coimbra, Mirela D'arc, Filipe Romero Rebello Moreira, Matheus Augusto Calvano Cosentino, Francine Bittencourt Schiffler, Thamiris Dos Santos Miranda, Ricardo Mouta, Déa Luiza Girardi, Victor Wanderkoke, Gabriel Medeiros, Talitha Mayumi Francisco, Flávio Landim Soffiati, Suelen Sanches Ferreira, Carlos Ramon Ruiz-Miranda, Marcelo Alves Soares, André Felipe Dos Santos

{"title":"Fecal Virome of Southeastern Maned Sloth (Bradypus crinitus) (Pilosa: Bradypodidae).","authors":"Amanda Coimbra, Mirela D'arc, Filipe Romero Rebello Moreira, Matheus Augusto Calvano Cosentino, Francine Bittencourt Schiffler, Thamiris Dos Santos Miranda, Ricardo Mouta, Déa Luiza Girardi, Victor Wanderkoke, Gabriel Medeiros, Talitha Mayumi Francisco, Flávio Landim Soffiati, Suelen Sanches Ferreira, Carlos Ramon Ruiz-Miranda, Marcelo Alves Soares, André Felipe Dos Santos","doi":"10.1590/1678-4685-GMB-2024-0183","DOIUrl":"10.1590/1678-4685-GMB-2024-0183","url":null,"abstract":"We report a viral metagenomic analysis of fecal samples from Bradypus crinitus (Pilosa: Bradypodidae), a recently described sloth species that occurs in the Atlantic Forest of Espírito Santo and Rio de Janeiro states, Southeast Brazil. Through Illumina sequencing, we generated a total of 2,065,344 raw reads, of which 945,386 reads (45.77%) passed the quality and size filter. The highest proportion of them was assigned to Eukarya, followed by Bacteria and only a small proportion to Virus. However, we identified 24 viral families using distinct taxonomic assignment tools, including phages and vertebrate viruses, such as retroviruses and papillomaviruses. Also, we identified four bacterial genus already associated with disease in sloths. Our study sheds light on the microbiome of a previously unexplored species, further contributing to the comprehension of metagenomic global diversity.","PeriodicalId":12557,"journal":{"name":"Genetics and Molecular Biology","volume":"48 2","pages":"e20240183"},"PeriodicalIF":1.7,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12063671/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143988641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Clinical and epidemiological characterisation of neurofibromatosis type 1: Combined analysis of a reference hospital in Brazil and DataSUS. 1型神经纤维瘤病的临床和流行病学特征：巴西一家参考医院和DataSUS的联合分析

IF 1.7 4区生物学

Genetics and Molecular Biology Pub Date : 2025-04-25 eCollection Date: 2025-01-01 DOI: 10.1590/1678-4685-GMB-2024-0144

Marina Gabriela da Silva Lins, Peterson de Jesus Morais, Júlia de Oliveira Martinho, Mariah Cristina Antunes do Nascimento, Ana Paula Simedan Vila, Márcia Maria Urbanin Castanhole-Nunes, Érika Cristina Pavarino, Eny Maria Goloni-Bertollo

{"title":"Clinical and epidemiological characterisation of neurofibromatosis type 1: Combined analysis of a reference hospital in Brazil and DataSUS.","authors":"Marina Gabriela da Silva Lins, Peterson de Jesus Morais, Júlia de Oliveira Martinho, Mariah Cristina Antunes do Nascimento, Ana Paula Simedan Vila, Márcia Maria Urbanin Castanhole-Nunes, Érika Cristina Pavarino, Eny Maria Goloni-Bertollo","doi":"10.1590/1678-4685-GMB-2024-0144","DOIUrl":"10.1590/1678-4685-GMB-2024-0144","url":null,"abstract":"Neurofibromatosis type 1 (NF1) is a syndrome triggered by mutations in the NF1 gene, which alter the neurofibromin protein, a negative regulator of the RAS oncogenic pathway. Due to underreporting, the scarcity of studies on NF1 in Brazil and its importance in public health. This study aimed to assess the clinical and epidemiological characterisation of NF1 in a Reference Hospital in the country and DataSUS. The study analysed the electronic medical records of patients with NF1 and the DataSUS databases. The medical records showed a greater number of female, white and adult patients. There was a high frequency of clinical features adopted by the NIH consensus for the clinical diagnosis of the disease, such as CALMs, dermal neurofibromas and axillary/inguinal ephelides, bone and ophthalmological changes, in addition malignant and benign neoplasms and neurodevelopmental disorders. On the other hand, the data provided by DataSUS shows a disproportionate concentration of NF1 consultations between the country's regions, with a low level of diagnoses of newborn with NF1 and a NF1 mortality rate of 3.06% in the population. There is therefore a need for new public policies on access to diagnosis, treatment and information about the disease for the Brazilian population.","PeriodicalId":12557,"journal":{"name":"Genetics and Molecular Biology","volume":"48 1","pages":"e20240144"},"PeriodicalIF":1.7,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12100465/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144119349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Identifying genetically predisposed type 1 diabetes mellitus individuals in a Southern Brazilian population: The construction of a genetic risk score. 在巴西南部人群中识别遗传易感的1型糖尿病个体：遗传风险评分的构建

IF 1.7 4区生物学

Genetics and Molecular Biology Pub Date : 2025-04-18 eCollection Date: 2025-01-01 DOI: 10.1590/1678-4685-GMB-2023-0308

Felipe Mateus Pellenz, Mayara Souza de Oliveira, Guilherme Coutinho Kullmann Duarte, Natália Emerim Lemos, Cristine Dieter, Luís Henrique Canani, Taís Silveira Assmann, Daisy Crispim

{"title":"Identifying genetically predisposed type 1 diabetes mellitus individuals in a Southern Brazilian population: The construction of a genetic risk score.","authors":"Felipe Mateus Pellenz, Mayara Souza de Oliveira, Guilherme Coutinho Kullmann Duarte, Natália Emerim Lemos, Cristine Dieter, Luís Henrique Canani, Taís Silveira Assmann, Daisy Crispim","doi":"10.1590/1678-4685-GMB-2023-0308","DOIUrl":"https://doi.org/10.1590/1678-4685-GMB-2023-0308","url":null,"abstract":"Single nucleotide polymorphisms (SNPs) in the HLA DR/DQ region have the greatest impact on susceptibility to type 1 diabetes mellitus (T1DM). Non-HLA SNPs interact with the HLA, influencing the risk for T1DM. The aim of this study was to develop a genetic risk score (GRS) based on HLA DR/DQ and non-HLA SNPs to discriminate patients with T1DM. The sample comprised 466 patients with T1DM and 469 controls. The rs689/INS, rs2476601/PTPN22, rs231775/CTLA-4, rs2304256/TYK2, rs2292239/ERBB3, and HLA DR/DQ SNPs were genotyped using real-time PCR. The unweighted GRS (uGRS) was calculated by summing the risk alleles of each SNP and the weighted GRS (wGRS) by multiplying the risk alleles by their odds ratios. The uGRS was higher in T1DM patients than in non-diabetic controls (0.34 ± 0.14 vs. 0.26 ± 0.13, P <0.0001), being positively correlated with HbA1c levels (P <0.0001). wGRSs exhibited higher AUCs than uGRSs. The wGRS containing only HLA DR/DQ SNPs showed an AUC of 0.75 (95% CI 0.72 - 0.78). The wGRS containing both HLA DR/DQ and non-HLA SNPs, adjusted for race, demonstrated the best discriminative power [AUC 0.91 (95% CI 0.89 - 0.93)]. The race adjusted-wGRS, including all SNPs, seems to be a useful genetic tool for assessing individual's predisposition to T1DM.","PeriodicalId":12557,"journal":{"name":"Genetics and Molecular Biology","volume":"48 2","pages":"e20230308"},"PeriodicalIF":1.7,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11999062/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144005828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mismatch uracil DNA glycosylase (Mug) is maintained in the Corynebacterium pseudotuberculosis genome and exhibits affinity for uracil but not other types of damage. 错配尿嘧啶DNA糖基酶（Mug）存在于假结核棒状杆菌基因组中，对尿嘧啶表现出亲和力，但对其他类型的损伤没有亲和力。

IF 1.7 4区生物学

Genetics and Molecular Biology Pub Date : 2025-04-14 eCollection Date: 2025-01-01 DOI: 10.1590/1678-4685-GMB-2023-0353

Bruno Carvalho Resende, Cássio Siqueira Souza Cassiano, Diego Lisboa Rios, Thalia Queiroz Ladeira, Vasco Ariston Carvalho Azevedo, Luciana Lara Dos Santos, Lucía Valenzuela-Pérez, Gonzalo Cabrera, Carlos Renato Machado, Débora de Oliveira Lopes

{"title":"Mismatch uracil DNA glycosylase (Mug) is maintained in the Corynebacterium pseudotuberculosis genome and exhibits affinity for uracil but not other types of damage.","authors":"Bruno Carvalho Resende, Cássio Siqueira Souza Cassiano, Diego Lisboa Rios, Thalia Queiroz Ladeira, Vasco Ariston Carvalho Azevedo, Luciana Lara Dos Santos, Lucía Valenzuela-Pérez, Gonzalo Cabrera, Carlos Renato Machado, Débora de Oliveira Lopes","doi":"10.1590/1678-4685-GMB-2023-0353","DOIUrl":"https://doi.org/10.1590/1678-4685-GMB-2023-0353","url":null,"abstract":"The genome of Corynebacterium pseudotuberculosis, etiologic agent of Caseous Lymphadenitis (CLA), was sequenced to comprehend its genetics, pathogenicity, and virulence mechanisms due to its economic importance. A focus was placed on the G/U mismatch-specific DNA glycosylase (Mug), an enzyme vital for base excision repair in DNA that can play an important role in uracil repair, since the high G+C content of C. pseudotuberculosis makes it prone to deamination events, accentuating the potential significance of Mug. Through in silico and in vitro analyses, the Corynebacterium pseudotuberculosis Mug protein (CpMug) was characterized to confirm its DNA glycosylase activity and lesion affinity. The mug gene was identified in both pathogenic and non-pathogenic Corynebacterium species, lacking a discernible ancestry pattern. Bioinformatics analyses revealed the preservation of essential uracil DNA glycosylase catalytic residues in CpMug. The 3D structure of CpMug was constructed, and molecular docking analysis demonstrated its interaction with DNA containing uracil and other lesions. Comparative analyses revealed a higher affinity of CpMug's catalytic residues for uracil over other DNA lesions and enzymatic assays with purified CpMug affirmed its uracil DNA glycosylase activity, while it exhibited no activity on 8-oxoguanine, tetrahydrofuran, or thymine glycol, consistent with computational simulations.","PeriodicalId":12557,"journal":{"name":"Genetics and Molecular Biology","volume":"48 2","pages":"e20230353"},"PeriodicalIF":1.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12001322/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144063340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ethnicity-specific associations between the promoter region G-308A polymorphism (rs1800629) of the TNF-α gene and the development of end-stage renal disease: An evidence-based meta-analysis and trial sequential analysis. TNF-α基因启动子区G-308A多态性（rs1800629）与终末期肾病发展之间的种族特异性关联：循证荟萃分析和试验序列分析

IF 1.7 4区生物学

Genetics and Molecular Biology Pub Date : 2025-02-24 eCollection Date: 2025-01-01 DOI: 10.1590/1678-4685-GMB-2024-0077

Suthiya Anumas, Amarit Tansawet, Pawin Numthavaj, Pattharawin Pattharanitima, Noel Pabalan, Hamdi Jarjanazi, Rungrawee Mongkolrob, Adis Tasanarong, Phuntila Tharabenjasin

{"title":"Ethnicity-specific associations between the promoter region G-308A polymorphism (rs1800629) of the TNF-α gene and the development of end-stage renal disease: An evidence-based meta-analysis and trial sequential analysis.","authors":"Suthiya Anumas, Amarit Tansawet, Pawin Numthavaj, Pattharawin Pattharanitima, Noel Pabalan, Hamdi Jarjanazi, Rungrawee Mongkolrob, Adis Tasanarong, Phuntila Tharabenjasin","doi":"10.1590/1678-4685-GMB-2024-0077","DOIUrl":"10.1590/1678-4685-GMB-2024-0077","url":null,"abstract":"Tumor necrosis factor-alpha (TNF-α), is partly attributed to pathogenesis of end-stage renal disease (ESRD). Inconsistency of reported associations between TNF-α G-308A polymorphism (rs1800629) and ESRD prompted a meta-analysis to obtain more precise estimates. Eleven case-control studies from 11 articles were included. Pooled odds ratios (OR) and 95% confidence intervals (95% CIs) were estimated to evaluate the association. Subgroup analysis was based on ethnicity (Caucasian and Asian). Multiple comparisons were Bonferroni-corrected. Trial sequential analysis (TSA) was implemented to ascertain the reliability of results. Sensitivity analyses and publication bias tests were performed on significant results. There were no significant association (pa >0.05) in the overall and ethnic subgroup. Indians, three significant pool ORs (pa < 0.01-0.03) showed increased susceptibility to ESRD in homozygous (OR, 6.57; 95% CI, 1.45 to 29.75; pa = 0.01), recessive (OR, 6.75; 95% CI, 1.44 to 31.56; pa = 0.02), and codominant (OR, 2.06; 95% CI, 1.08 to 3.94; pa = 0.03) models. TSA indicated the robustness of such association in the Indian population. The main outcomes were robust without evidence of publication bias. This study showed associations between TNF-α G-308A and ESRD are confined to Indians, which are susceptible to ESRD up to approximately 7 times.","PeriodicalId":12557,"journal":{"name":"Genetics and Molecular Biology","volume":"48 1","pages":"e20240077"},"PeriodicalIF":1.7,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11912548/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143572755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Male aging in germ cells: What are we inheriting? 生殖细胞中的男性衰老：我们遗传了什么？

IF 1.7 4区生物学

Genetics and Molecular Biology Pub Date : 2025-02-18 eCollection Date: 2025-01-01 DOI: 10.1590/1678-4685-GMB-2024-0052

Arturo Elías-Llumbet, Sebastián Lira, Marcia Manterola

{"title":"Male aging in germ cells: What are we inheriting?","authors":"Arturo Elías-Llumbet, Sebastián Lira, Marcia Manterola","doi":"10.1590/1678-4685-GMB-2024-0052","DOIUrl":"10.1590/1678-4685-GMB-2024-0052","url":null,"abstract":"Aging is a significant risk factor for male fertility and can lead to severe developmental disorders in offspring. It disrupts testicular function and spermatogenesis, resulting in sperm abnormalities and DNA fragmentation. Male aging alters the genome and epigenome of germ cells due to persistent oxidative stress caused by the cumulative effects of environmental factors over a lifetime. At the molecular level, DNA damage occurs and is poorly repaired due to impaired DNA repair pathways, leading to unrepaired lesions and de novo mutations. Aging also creates distinct epigenetic landscapes that modify gene expression in germ cells, affect the DNA damage response, and generate de novo DNA and epigenetic mutations that are transmitted to the sperm and inherited by the offspring. This review discusses current knowledge on the age-associated effects on male germ cells and the genomic and epigenomic mechanisms contributing to altered male reproductive health and outcomes in progeny. We propose a male reproductive aging threshold, where cumulative exposure to risk factors leads to oxidative stress, impaired spermatogenesis, and altered reproductive outcomes. Finally, we discuss novel interventions to prevent premature testicular aging and emphasize the need for public health policies and counseling guidelines for men seeking paternity.","PeriodicalId":12557,"journal":{"name":"Genetics and Molecular Biology","volume":"47Suppl 1 Suppl 1","pages":"e20240052"},"PeriodicalIF":1.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11837248/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143448485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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