Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 542
Filtrar
1.
Animal ; 18(11): 101335, 2024 Sep 19.
Artigo em Inglês | MEDLINE | ID: mdl-39405958

RESUMO

The Italian pig farming industry is unique in its focus on raising heavy pigs primarily for the production of high-quality dry-cured hams. These products require pigs to be slaughtered at a live weight of around 170 kg at 9 months of age. The primary breeds used in this system are Italian Duroc, Italian Landrace, and Italian Large White which are crossed to produce lines that meet standard requirements. Over the past four decades, selection and breeding programmes for these breeds have been subjected to distinct selective pressures to highlight the characteristics of each breed. In this study, we investigated the genome of these breeds by analysing high-density single nucleotide polymorphism data from over 9 000 pigs to scan for signatures of selection using four different methods, two within breeds and two across breeds. This allowed to identify the genomic regions that differentiate these breeds as well as any relevant genes and biological terms. On a global scale, we found that the Italian Duroc breed exhibited a higher genetic differentiation from the Italian Landrace and Italian Large White breeds, with a pairwise FST value of 0.20 compared with the 0.13 between Italian Landrace and Italian Large White. This may reflect either their different origins or the different breeding goals, which are more similar for the Italian Landrace and Italian Large White breeds. Despite these genetic differences at a global level, few signatures of selection regions reached complete fixation, possibly due to challenges in detecting selection linked to quantitative polygenic traits. The differences among the three breeds are confirmed by the low level of overlap in the regions detected. Genetic enrichment analyses of the three breeds revealed pathways and genes related to various productive traits associated with growth and fat deposition. This may indicate a common selection direction aimed at enhancing specific production traits, though different biological mechanisms are likely targeted by the same directional selection in these three breeds. Therefore, these genes may play a critical role in determining the distinctive characteristics of Italian Duroc, Italian Landrace, and Italian Large White, and potentially influence the traits in crossbred pigs derived from them. Overall, the insights gained from this study will contribute to understanding how directional selection has shaped the genome of these heavy pig breeds and to better address selection strategies aimed at enhancing the meat processing industry linked with dry-cured ham production chains.

2.
J Endocrinol Invest ; 2024 Jun 27.
Artigo em Inglês | MEDLINE | ID: mdl-38935200

RESUMO

BACKGROUND:  Increasing evidence suggests that diabetes increases the risk of developing different types of cancer. Hyperinsulinemia, hyperglycemia and chronic inflammation, characteristic of diabetes, could represent possible mechanisms involved in cancer development in diabetic patients. At the same time, cancer increases the risk of developing new-onset diabetes, mainly caused by the use of specific anticancer therapies. Of note, diabetes has been associated with a ∼10% increase in mortality for all cancers in comparison with subjects who did not have diabetes. Diabetes is associated with a worse prognosis in patients with cancer, and more recent findings suggest a key role for poor glycemic control in this regard. Nevertheless, the association between glycemic control and cancer outcomes in oncologic patients with diabetes remains unsettled and poorly debated. PURPOSE:  The current review seeks to summarize the available evidence on the effect of glycemic control on cancer outcomes, as well as on the possibility that timely treatment of hyperglycemia and improved glycemic control in patients with cancer and diabetes may favorably affect cancer outcomes.

3.
ESMO Open ; 8(6): 102062, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38070434

RESUMO

Cancer management has significantly evolved in recent years, focusing on a multidisciplinary team approach to provide the best possible patient care and address the various comorbidities, toxicities, and complications that may arise during the patient's treatment journey. The co-occurrence of diabetes and cancer presents a significant challenge for health care professionals worldwide. Management of these conditions requires a holistic approach to improve patients' overall health, treatment outcomes, and quality of life, preventing diabetes complications and cancer treatment side-effects. In this article, a multidisciplinary panel of experts from different Italian scientific societies provide a critical overview of the co-management of cancer and diabetes, with an increasing focus on identifying a novel specialty field, 'diabeto-oncology', and suggest new co-management models of cancer patients with diabetes to improve their care. To better support cancer patients with diabetes and ensure high levels of coordinated care between oncologists and diabetologists, 'diabeto-oncology' could represent a new specialized field that combines specific expertise, skills, and training.


Assuntos
Diabetes Mellitus , Neoplasias , Humanos , Qualidade de Vida , Consenso , Neoplasias/complicações , Neoplasias/epidemiologia , Neoplasias/terapia , Oncologia , Diabetes Mellitus/epidemiologia , Diabetes Mellitus/terapia , Itália/epidemiologia
4.
Mol Cell Proteomics ; 22(11): 100638, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37704098

RESUMO

A major limitation when undertaking quantitative proteomic time-course experimentation is the tradeoff between depth-of-analysis and speed-of-analysis. In high complexity and high dynamic range sample types, such as plant extracts, balance between resolution and time is especially apparent. To address this, we evaluate multiple compensation voltage (CV) high field asymmetric waveform ion mobility spectrometry (FAIMSpro) settings using the latest label-free single-shot Orbitrap-based DIA acquisition workflows for their ability to deeply quantify the Arabidopsis thaliana seedling proteome. Using a BoxCarDIA acquisition workflow with a -30 -50 -70 CV FAIMSpro setting, we were able to consistently quantify >5000 Arabidopsis seedling proteins over a 21-min gradient, facilitating the analysis of ∼42 samples per day. Utilizing this acquisition approach, we then quantified proteome-level changes occurring in Arabidopsis seedling shoots and roots over 24 h of salt and osmotic stress, to identify early and late stress response proteins and reveal stress response overlaps. Here, we successfully quantify >6400 shoot and >8500 root protein groups, respectively, quantifying nearly ∼9700 unique protein groups in total across the study. Collectively, we pioneer a short gradient, multi-CV FAIMSpro BoxCarDIA acquisition workflow that represents an exciting new analysis approach for undertaking quantitative proteomic time-course experimentation in plants.


Assuntos
Proteínas de Arabidopsis , Arabidopsis , Arabidopsis/metabolismo , Proteoma/metabolismo , Proteômica/métodos , Proteínas de Arabidopsis/metabolismo , Estresse Salino , Plântula/metabolismo
5.
Eur Rev Med Pharmacol Sci ; 27(11): 5190-5199, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-37318508

RESUMO

OBJECTIVE: Within the last few years smoking activities, as well as infertility, have increased in Italy, and so has the consumption of alternative cigarette devices among women of childbearing age. The aim of this observational study was to evaluate the impact of the consumption of cigarettes and alternatives devices, such as electronic cigarettes and heat-not-burn (HnB) products, on infertile women performing in vitro fertilization (IVF), in specific on the quality of oocytes retrieved in women performing intracytoplasmic sperm injection (ICSI) cycles. PATIENTS AND METHODS: Prospective observational longitudinal study involving 410 women referring to the Reproductive Physiopathology and Andrology Unit, Sandro Pertini Hospital, Rome, from 2019-2022. All the women enrolled filled out an elaborate questionnaire investigating smoking consumption, before the beginning of ovarian stimulation by antagonist protocol, ovarian pick-up, and subsequent ICSI technique. The outcomes of the study were the evaluation of clinical and ICSI features between the groups of smokers and non-smokers: the number of retrieved oocytes, immature oocytes, and fertilization rate were confronted between the two groups and between cigarette smokers vs. e-cigarette and heat-not-burn (HnB) products smokers. RESULTS: Clinical parameters were comparable between the group of smokers compared to one of the non-smokers, except for anti-Müllerian hormone (AMH), which was statistically lower in smokers (p<0.05). Regarding IVF hormonal stimulations it appears that the total dose of gonadotropin was statistically lower in the non-smoker's group, compared to smokers (1850±860 UI vs. 1,730±780 p<0.05). Regarding ICSI techniques interestingly the number of oocytes retrieved was lower in the smokers' group compared to non-smokers (5.21±0.9 vs. 6.55±3.5, p<0.001), and the number of empty zona pellucida oocytes was statistically higher in the smokers' group (0.51±0.1 vs. 0.2±0.1, p<0.05). On the other hand, the fertilization rate (FR) was statistically higher in non-smokers compared to the smokers' group (72.16±3.05 vs. 68.12±2.21, p=0.03). Out of the 203 smokers, overall, any statistically significant difference, regarding ICSI results, has been found between the group of cigarette smokers, compared to the group of e-cigarettes plus HnB products smokers. CONCLUSIONS: Smoking negatively impacts human fertility, leading to a reduction of ovarian reserve and ovarian quality, which can negatively impact results in women performing ICSI cycles. Despite the limitation of the study, our results underline that consumption of cigarette alternative devices seems to have a similar negative impact on the quantity and quality of oocytes retrieved in ICSI cycles. Clinicians should emphasize the reduction of exposure to harmful substances derived from the combustion of tobacco smoking, as well as alternative devices, in women of childbearing age.


Assuntos
Sistemas Eletrônicos de Liberação de Nicotina , Infertilidade Feminina , Reserva Ovariana , Gravidez , Humanos , Masculino , Feminino , Injeções de Esperma Intracitoplásmicas/métodos , Infertilidade Feminina/terapia , Taxa de Gravidez , Estudos Prospectivos , Estudos Longitudinais , Sêmen , Fertilização in vitro/métodos , Oócitos , Indução da Ovulação/métodos , Fumar Tabaco , Fumar/efeitos adversos , Estudos Retrospectivos
6.
ESMO Open ; 8(3): 101573, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-37263082

RESUMO

Increasing evidence suggests that patients with diabetes, particularly type 2 diabetes (T2D), are characterized by an increased risk of developing different types of cancer, so cancer could be proposed as a new T2D-related complication. On the other hand, cancer may also increase the risk of developing new-onset diabetes, mainly caused by anticancer therapies. Hyperinsulinemia, hyperglycemia, and chronic inflammation typical of T2D could represent possible mechanisms involved in cancer development in diabetic patients. MicroRNAs (miRNAs) are a subset of non-coding RNAs, ⁓22 nucleotides in length, which control the post-transcriptional regulation of gene expression through both translational repression and messenger RNA degradation. Of note, miRNAs have multiple target genes and alteration of their expression has been reported in multiple diseases, including T2D and cancer. Accordingly, specific miRNA-regulated pathways are involved in the pathogenesis of both conditions. In this review, a panel of experts from the Italian Association of Medical Oncology (AIOM), Italian Association of Medical Diabetologists (AMD), Italian Society of Diabetology (SID), Italian Society of Endocrinology (SIE), and Italian Society of Pharmacology (SIF) provide a critical view of the evidence about the involvement of miRNAs in the pathophysiology of both T2D and cancer, trying to identify the shared miRNA signature and pathways able to explain the strong correlation between the two conditions, as well as to envision new common pharmacological approaches.


Assuntos
Diabetes Mellitus Tipo 2 , MicroRNAs , Neoplasias , Humanos , Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/genética , Diabetes Mellitus Tipo 2/fisiopatologia , Diabetes Mellitus Tipo 2/terapia , Neoplasias/complicações , Neoplasias/genética , Neoplasias/terapia , MicroRNAs/genética , MicroRNAs/metabolismo , Células Secretoras de Insulina/patologia , Resistência à Insulina/genética , Terapia de Alvo Molecular/tendências
9.
Int J Food Microbiol ; 386: 110025, 2023 Feb 02.
Artigo em Inglês | MEDLINE | ID: mdl-36436413

RESUMO

The presence of Listeria monocytogenes (Lm) in the food processing environment (facilities and products) is a challenging problem in food safety management. Lm is one of the main causes of mortality in foodborne infections, and the trend is continuously increasing. In this study, a collection of 323 Lm strain isolates recovered from food matrices and food industry environments (surfaces and equipment) over four years from 80 food processing facilities was screened using a restriction site-associated tag sequencing (2b-RAD) typing approach developed for Lm. Thirty-six different restriction site-associated DNA (RAD) types (RTs) were identified, most of which correspond to lineage II. RT1, the most represented genotype in our collection and already reported as one of the most prevalent genotypes in the food environment, was significantly associated with meat processing facilities. The sequencing of the genomes of strains belonging to the same RT and isolated in the same facility in different years revealed several clusters of persistence. The definition of the persistent strains (PSs) allowed the identification of the potential source of contamination in the incoming raw meat that is introduced in the facility to be processed. The slaughterhouses, which, according to the European Union (EU) regulation, are not inspected for the presence of Lm could be hotspots for the persistence of Lm PSs.


Assuntos
Listeria monocytogenes , Listeria monocytogenes/genética , Microbiologia de Alimentos , Tipagem Molecular , Inocuidade dos Alimentos , Carne , Contaminação de Alimentos/análise
10.
BMC Plant Biol ; 22(1): 496, 2022 Oct 22.
Artigo em Inglês | MEDLINE | ID: mdl-36273172

RESUMO

Nearly 60 - 80 % of intron-containing plant genes undergo alternative splicing in response to either stress or plant developmental cues. RNA splicing is performed by a large ribonucleoprotein complex called the spliceosome in conjunction with associated subunits such as serine arginine (SR) proteins, all of which undergo extensive phosphorylation. In plants, there are three main protein kinase families suggested to phosphorylate core spliceosome subunits and related splicing factors based on orthology to human splicing-related kinases: the SERINE/ARGININE PROTEIN KINASES (SRPK), ARABIDOPSIS FUS3 COMPLEMENT (AFC), and Pre-mRNA PROCESSING FACTOR 4 (PRP4K) protein kinases. To better define the conservation and role(s) of these kinases in plants, we performed a genome-scale analysis of the three families across photosynthetic eukaryotes, followed by extensive transcriptomic and bioinformatic analysis of all Arabidopsis thaliana SRPK, AFC, and PRP4K protein kinases to elucidate their biological functions. Unexpectedly, this revealed the existence of SRPK and AFC phylogenetic groups with distinct promoter elements and patterns of transcriptional response to abiotic stress, while PRP4Ks possess no phylogenetic sub-divisions, suggestive of functional redundancy. We also reveal splicing-related kinase families are both diel and photoperiod regulated, implicating different orthologs as discrete time-of-day RNA splicing regulators. This foundational work establishes a number of new hypotheses regarding how reversible spliceosome phosphorylation contributes to both diel plant cell regulation and abiotic stress adaptation in plants.


Assuntos
Proteínas de Arabidopsis , Arabidopsis , Processamento Alternativo/genética , Arabidopsis/metabolismo , Proteínas de Arabidopsis/genética , Proteínas de Arabidopsis/metabolismo , Arginina/metabolismo , Proteínas Quinases/genética , Ribonucleoproteínas/genética , Precursores de RNA/genética , Precursores de RNA/metabolismo , Splicing de RNA/genética , Fatores de Processamento de RNA/genética , Serina/genética , Estresse Fisiológico/genética
11.
J Sex Res ; 59(9): 1133-1139, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35060403

RESUMO

We tested whether CSD500 (Futura Medical; Guildford, UK), a novel condom containing erectogenic gel designed to increase penile firmness, penile size, and erection duration, results in greater sexual pleasure. In 2017-2020, we randomized heterosexual couples in Thanh Hoa, Vietnam to use CSD500 (N = 248) or standard condoms (N = 252) and followed them up for six months. Women completed the Quality of Sexual Experience (QSE) scale; men completed the QSE, Sexual Experience Questionnaire (SEX-Q), and 11 condom acceptability items. Female participants' mean age was 32.1 years (SD = 0.24; range 21-46). QSE scores were higher among women (B, 0.12; 95% CI, 0.03-0.21) and men (B, 0.21; 95% CI, 0.08-0.35) in the CSD500 relative to the control arm. SEX-Q scores were higher among men in the CSD500 compared to the control arm (B, 3.22; 95% CI, 1.53-4.91). Higher proportions of men in the CSD500 relative to the control arm reported the condom felt "natural" during sex (68.6% vs. 32.3%; p < .01) and that sex with the condom felt "a lot better" than condomless sex (15.5% vs. 5.3%; p < .01). Compared with standard condoms, CSD500 use was associated with higher reports of sexual pleasure and condom acceptability.


Assuntos
Preservativos , Parceiros Sexuais , Masculino , Feminino , Humanos , Adulto , Prazer , Comportamento Sexual , Heterossexualidade
12.
Diabetes Res Clin Pract ; 181: 109081, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-34627944

RESUMO

MODY is a monogenic, autosomal dominant form of diabetes mellitus. MODY can be caused by mutations in several genes; glucokinase (GCK) accounts for 30-50% of the cases. The diagnosis can be suspected in early-onset diabetes with atypical features for type 1/type 2. Treatment is usually not recommended. A 5-year-old girl came to our attention for occasional episodes of hyperglycaemia. She was born at term, her birth weight was small for gestational age. At the beginning of her pregnancy, her mother was already on insulin therapy for impaired fasting glucose levels, detected before conception and confirmed in the first weeks of gestation. She was treated with insulin until the childbirth without further investigations. The patient was asymptomatic and in good clinical condition. Basal blood tests have shown a fasting plasma glucose of 125 mg/dl, an HbA1c of 6.5%. Antibodies against islet cells, anti-GAD and anti-ZNT8 antibodies were all negative. A 2-h oral glucose tolerance test was performed and underlined an impaired glucose tolerance. HLA haplotypes were screened, excluding susceptibility. GCK Sanger Sequencing identified a novel heterozygous variant. It is not described as a classical mutations. The analysis has been extended to the parents, finding out the same variant in her mother. To our knowledge this mutation has not been described previously; we believe that this variant is responsible for MODY2 due to FBG and Hb1Ac of all the affected members of family. We suggest high suspicion of an underlying GCK variant in SGA children with hyperglycaemia born to a diabetic mother.


Assuntos
Diabetes Mellitus Tipo 2 , Hiperglicemia , Pré-Escolar , Diabetes Mellitus Tipo 2/genética , Feminino , Quinases do Centro Germinativo , Glucoquinase/genética , Humanos , Mães , Mutação , Gravidez
13.
Rev Gastroenterol Mex (Engl Ed) ; 86(4): 328-334, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34518143

RESUMO

INTRODUCTION AND AIMS: The primary aim was to explore the epidemiologic trend of pediatric inflammatory bowel disease in Latin America, and the secondary aims were to obtain an overview of the diagnostic/therapeutic focus of the members of the LASPGHAN and examine the relation of case frequency to year, during the study period. MATERIALS AND METHODS: Latin American pediatric gastroenterologists participated in an online survey, conducted through the SurveyMonkey platform, that investigated the yearly frequency of new inflammatory bowel disease patients within the time frame of 2005-2016, their disease variety, the gastrointestinal segments affected, and the diagnostic and treatment methods utilized. The correlation of new case frequency with each study year was evaluated. RESULTS: A total of 607 patients were studied. The diagnoses were ulcerative colitis in 475 (78.3%) cases, Crohn's disease in 104 (17.1%), and inflammatory bowel disease D unclassified in 28 (4.6%). The trend in ulcerative colitis was a lineal increase in the frequency of new cases related to each study year, with a significant correlation coefficient. Pancolitis was found in 67.6% of the patients. The diagnostic methods included clinical data, endoscopy, and biopsies in more than 99% of the cases, and imaging studies were indicated selectively. Drug regimens were limited to 5-aminosalicylic acid derivatives, azathioprine, 6-mercaptopurine, infliximab, and adalimumab. CONCLUSIONS: Pediatric inflammatory bowel disease in Latin America appears to have increased during the years included in the study period, with a predominance of moderate or severe ulcerative colitis. That lineal trend suggests the predictive likelihood of a gradual increase in the coming years, with possible epidemiologic and clinical implications.


Assuntos
Colite Ulcerativa , Doença de Crohn , Gastroenterologia , Doenças Inflamatórias Intestinais , Criança , Colite Ulcerativa/diagnóstico , Humanos , Doenças Inflamatórias Intestinais/diagnóstico , América Latina/epidemiologia
14.
Anim Genet ; 52(4): 440-450, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34096632

RESUMO

The number of teats is a reproductive-related trait of great economic relevance as it affects the mothering ability of the sows and thus the number of properly weaned piglets. Moreover, genetic improvement of this trait is fundamental to parallelly help the selection for increased litter size. We present the results of single-marker and haplotypes-based genome-wide association studies for the number of teats in two large cohorts of heavy pig breeds (Italian Large White and Italian Landrace) including 3990 animals genotyped with the 70K GGP Porcine BeadChip and other 1927 animals genotyped with the Illumina PorcineSNP60 BeadChip. In the Italian Large White population, genome scans identified three genome regions (SSC7, SSC10, and SSC12) that confirmed the involvement of the VRTN gene (as we previously reported) and highlighted additional loci known to affect teat counts, including the FRMD4A and HOXB1 gene regions. A different picture emerged in the Italian Landrace population, with a total of 12 genome regions in eight chromosomes (SSC3, SSC6, SSC8, SSC11, SSC13, SSC14, SSC15, and SSC16) mainly detected via the haplotype-based genome scan. The most relevant QTL was close to the ARL4C gene on SSC15. Markers in the VRTN gene region were not significant in the Italian Landrace breed. The use of both single-marker and haplotype-based genome-wide association analyses can be helpful to exploit and dissect the genome of the pigs of different populations. Overall, the obtained results supported the polygenic nature of the investigated trait and better elucidated its genetic architecture in Italian heavy pigs.


Assuntos
Marcadores Genéticos , Estudo de Associação Genômica Ampla/veterinária , Haplótipos , Glândulas Mamárias Animais/crescimento & desenvolvimento , Sus scrofa/genética , Animais , Feminino
15.
ESMO Open ; 6(3): 100155, 2021 06.
Artigo em Inglês | MEDLINE | ID: mdl-34020401

RESUMO

Pancreatic cancer (PC) is a common cause of cancer-related death, due to difficulties in detecting early-stage disease, to its aggressive behaviour, and to poor response to systemic therapy. Therefore, developing strategies for early diagnosis of resectable PC is critical for improving survival. Diabetes mellitus is another major public health problem worldwide. Furthermore, diabetes can represent both a risk factor and a consequence of PC: nowadays, the relationship between these two diseases is considered a high priority for research. New-onset diabetes can be an early manifestation of PC, especially in a thin adult without a family history of diabetes. However, even if targeted screening for patients at higher risk of PC could be a promising approach, this is not recommended in asymptomatic adults with new-onset diabetes, due to the much higher incidence of hyperglycaemia than PC and to the lack of a safe and affordable PC screening test. Prompted by a well-established and productive multidisciplinary cooperation, the Italian Association of Medical Oncology (AIOM), the Italian Medical Diabetologists Association (AMD), the Italian Society of Endocrinology (SIE), and the Italian Society of Pharmacology (SIF) here review available evidence on the mechanisms linking diabetes and PC, addressing the feasibility of screening for early PC in patients with diabetes, and sharing a set of update statements with the aim of providing a state-of-the-art overview and a decision aid tool for daily clinical practice.


Assuntos
Diabetes Mellitus , Neoplasias Pancreáticas , Médicos , Consenso , Diabetes Mellitus/diagnóstico , Diabetes Mellitus/epidemiologia , Humanos , Oncologia , Neoplasias Pancreáticas/diagnóstico , Neoplasias Pancreáticas/epidemiologia
16.
ESMO Open ; 6(3): 100153, 2021 06.
Artigo em Inglês | MEDLINE | ID: mdl-33984679

RESUMO

Most anticancer molecules are administered in body-size-based dosing schedules, bringing up unsolved issues regarding pharmacokinetic data in heavy patients. The worldwide spread of obesity has not been matched by improved methods and strategies for tailored drug dosage in this population. The weight or body surface area (BSA)-based approaches may fail to fully reflect the complexity of the anthropometric features besides obesity in cancer patients suffering from sarcopenia. Likewise, there is a lack of pharmacokinetic data on obese patients for the majority of chemotherapeutic agents as well as for new target drugs and immunotherapy. Therefore, although the available findings point to the role of dose intensity in cancer treatment, and support full weight-based dosing, empirical dose capping often occurs in clinical practice in order to avoid toxicity. Thus a panel of experts of the Associazione Italiana Oncologia Medica (AIOM), Associazione Medici Diabetologi (AMD), Società Italiana Endocrinologia (SIE), and Società Italiana Farmacologia (SIF), provides here a consensus statement for appropriate cytotoxic chemotherapy and new biological cancer drug dosing in obese patients.


Assuntos
Antineoplásicos , Neoplasias , Médicos , Consenso , Humanos , Neoplasias/complicações , Neoplasias/tratamento farmacológico , Obesidade/complicações
18.
Anim Genet ; 52(2): 155-170, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33544919

RESUMO

ROHs are long stretches of DNA homozygous at each polymorphic position. The proportion of genome covered by ROHs and their length are indicators of the level and origin of inbreeding. Frequent common ROHs within the same population define ROH islands and indicate hotspots of selection. In this work, we investigated ROHs in a total of 1131 pigs from 20 European local pig breeds and in three cosmopolitan breeds, genotyped with the GGP Porcine HD Genomic Profiler. plink software was used to identify ROHs. Size classes and genomic inbreeding parameters were evaluated. ROH islands were defined by evaluating different thresholds of homozygous SNP frequency. A functional overview of breed-specific ROH islands was obtained via over-representation analyses of GO biological processes. Mora Romagnola and Turopolje breeds had the largest proportions of genome covered with ROH (~1003 and ~955 Mb respectively), whereas Nero Siciliano and Sarda breeds had the lowest proportions (~207 and 247 Mb respectively). The highest proportion of long ROH (>16 Mb) was in Apulo-Calabrese, Mora Romagnola and Casertana. The largest number of ROH islands was identified in the Italian Landrace (n = 32), Cinta Senese (n = 26) and Lithuanian White Old Type (n = 22) breeds. Several ROH islands were in regions encompassing genes known to affect morphological traits. Comparative ROH structure analysis among breeds indicated the similar genetic structure of local breeds across Europe. This study contributed to understanding of the genetic history of the investigated pig breeds and provided information to manage these pig genetic resources.


Assuntos
Endogamia , Sus scrofa/genética , Animais , Europa (Continente) , Genoma , Genótipo , Homozigoto , Polimorfismo de Nucleotídeo Único , Densidade Demográfica
19.
Nature ; 589(7840): 52-58, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-33408373

RESUMO

With the proliferation of ultrahigh-speed mobile networks and internet-connected devices, along with the rise of artificial intelligence (AI)1, the world is generating exponentially increasing amounts of data that need to be processed in a fast and efficient way. Highly parallelized, fast and scalable hardware is therefore becoming progressively more important2. Here we demonstrate a computationally specific integrated photonic hardware accelerator (tensor core) that is capable of operating at speeds of trillions of multiply-accumulate operations per second (1012 MAC operations per second or tera-MACs per second). The tensor core can be considered as the optical analogue of an application-specific integrated circuit (ASIC). It achieves parallelized photonic in-memory computing using phase-change-material memory arrays and photonic chip-based optical frequency combs (soliton microcombs3). The computation is reduced to measuring the optical transmission of reconfigurable and non-resonant passive components and can operate at a bandwidth exceeding 14 gigahertz, limited only by the speed of the modulators and photodetectors. Given recent advances in hybrid integration of soliton microcombs at microwave line rates3-5, ultralow-loss silicon nitride waveguides6,7, and high-speed on-chip detectors and modulators, our approach provides a path towards full complementary metal-oxide-semiconductor (CMOS) wafer-scale integration of the photonic tensor core. Although we focus on convolutional processing, more generally our results indicate the potential of integrated photonics for parallel, fast, and efficient computational hardware in data-heavy AI applications such as autonomous driving, live video processing, and next-generation cloud computing services.

20.
J Endocrinol Invest ; 44(3): 403-419, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32743746

RESUMO

Bone represents the second most common site of distant metastases in differentiated thyroid cancer (DTC). The clinical course of DTC patients with bone metastases (BM) is quite heterogeneous, but generally associated with low survival rates. Skeletal-related events might be a serious complication of BM, resulting in high morbidity and impaired quality of life. To achieve disease control and symptoms relief, multimodal treatment is generally required: radioiodine therapy, local procedures-including surgery, radiotherapy and percutaneous techniques-and systemic therapies, such as kinase inhibitors and antiresorptive drugs. The management of DTC with BM is challenging: a careful evaluation and a personalized approach are essential to improve patients' outcomes. To date, prospective studies focusing on the main clinical aspects of DTC with BM are scarce; available analyses mainly include cohorts assembled over multiple decades, small samples sizes and data about BM not always separated from those regarding other distant metastases. The aim of this review is to summarize the most recent evidences and the unsolved questions regarding BM in DTC, analyzing several key issues: pathophysiology, prognostic factors, role of anatomic and functional imaging, and clinical management.


Assuntos
Adenocarcinoma/patologia , Neoplasias Ósseas/secundário , Diferenciação Celular , Neoplasias da Glândula Tireoide/patologia , Adenocarcinoma/terapia , Neoplasias Ósseas/terapia , Terapia Combinada , Humanos , Prognóstico , Neoplasias da Glândula Tireoide/terapia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA