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1.
Artigo em Inglês | MEDLINE | ID: mdl-38881214

RESUMO

Plant-mediated biosynthesis of nanoparticles is a green method that allows synthesis in one-pot process. Synthesis of gold nanoparticles with plant extracts has gained interest in the field of biomedicine due to its variety of applications. This study presents the synthesis via green chemistry of gold nanoparticles (AuNPs) using the methanol extract of Moringa oleifera seeds. The AuNPs were synthesized at room temperature. UV-Vis spectroscopy confirmed the formation of AuNPs by identifying the surface plasmon resonance located at 546 nm. TEM analysis shows spherical nanoparticles. FTIR analysis demonstrated the presence of specific bioactive molecules responsible for the Au3+ ion reduction process. The antioxidant activity of the nanoparticles was evaluated on the stabilization of the DPPH radical (1,1-diphenyl-2-picrylhydrazyl, 2,2-diphenyl-1-(2,4,6-trinitrophenyl) hydrazyl). The antimicrobial activity analysis was developed by broth microdilution method at different concentrations against Escherichia coli and Staphylococcus aureus. Minimum inhibitory concentration were 400 µg/mL and 200 µg/mL, respectively. A549 lung cancer cell proliferation was measured according to the MTT protocol, indicating a dose-dependent response and a IC50 of 163.9 ± 13.27 µg/mL. The AuNPs synthesized using M. oleifera seeds showed promise as active materials for antimicrobial or anticancer products.


Assuntos
Antibacterianos , Antioxidantes , Ouro , Química Verde , Neoplasias Pulmonares , Nanopartículas Metálicas , Moringa oleifera , Extratos Vegetais , Sementes , Staphylococcus aureus , Moringa oleifera/química , Nanopartículas Metálicas/química , Ouro/química , Antibacterianos/farmacologia , Antibacterianos/química , Extratos Vegetais/farmacologia , Extratos Vegetais/química , Sementes/química , Antioxidantes/farmacologia , Antioxidantes/química , Química Verde/métodos , Humanos , Staphylococcus aureus/efeitos dos fármacos , Neoplasias Pulmonares/tratamento farmacológico , Testes de Sensibilidade Microbiana , Escherichia coli/efeitos dos fármacos , Células A549
2.
Rev Esp Cir Ortop Traumatol ; 67(1): 62-67, 2023.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-36089241

RESUMO

BACKGROUND AND AIMS: The spring ligament has paramount role in supporting the arches and its fail causes the collapse of the medial longitudinal arc, inducing adult acquired flatfoot deformity. Our aim was to analyze the clinical and radiological outcomes of spring ligament repair and titanium wedges integration used in surgical osteotomies. MATERIAL AND METHODS: We performed a retrospective study of 23 cases with middle ages of 63, diagnosed with adult acquired flatfoot deformity stage IIB in RAM classification after ortho-prosthetic treatment failure, assessing the functional outcomes using the American Orthopedic Foot and Ankle Society scale and the radiological outcomes studying angles variation (talonavicular uncoverage, talo-first metatarsal angle and Meary axis). RESULTS: The mean preoperative American Orthopedic Foot and Ankle Society score of the sample was 52±10 and the postoperative 88±6 (p<0.05). The radiological outcomes showed a statistically significant improvement. CONCLUSION: Spring ligament repair associated to bone reconstruction offers large functional and radiological outcomes to adult acquired flatfoot deformity stage IIB treatment. Titanium wedges present an excellent bone integration.


Assuntos
Pé Chato , Pessoa de Meia-Idade , Adulto , Humanos , Pé Chato/diagnóstico por imagem , Pé Chato/cirurgia , Estudos Retrospectivos , Titânio , Osteotomia , Ligamentos Articulares/cirurgia
3.
Rev Esp Cir Ortop Traumatol ; 67(1): T62-T67, 2023.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-36375768

RESUMO

BACKGROUND AND AIMS: The spring ligament has paramount role in supporting the arches and its fail causes the collapse of the medial longitudinal arc, inducing adult acquired flatfoot deformity. Our aim was to analyze the clinical and radiological outcomes of spring ligament repair and titanium wedges integration used in surgical osteotomies. MATERIAL AND METHODS: We performed a retrospective study of 23 cases with middle ages of 63, diagnosed with adult acquired flatfoot deformity stage IIB in RAM classification after ortho-prosthetic treatment failure, assessing the functional outcomes using the American Orthopedic Foot and Ankle Society scale and the radiological outcomes studying angles variation (talonavicular uncoverage, talo-first metatarsal angle and Meary axis). RESULTS: The mean preoperative American Orthopedic Foot and Ankle Society score of the sample was 52±10 and the postoperative 88±6 (p<0.05). The radiological outcomes showed a statistically significant improvement. CONCLUSION: Spring ligament repair associated to bone reconstruction offers large functional and radiological outcomes to adult acquired flatfoot deformity stage IIB treatment. Titanium wedges present an excellent bone integration.


Assuntos
Pé Chato , Pessoa de Meia-Idade , Adulto , Humanos , Pé Chato/diagnóstico por imagem , Pé Chato/cirurgia , Estudos Retrospectivos , Titânio , Osteotomia , Ligamentos Articulares/cirurgia
5.
Sci Rep ; 12(1): 3324, 2022 02 28.
Artigo em Inglês | MEDLINE | ID: mdl-35228635

RESUMO

Understanding the recovery of whale populations is critical for developing population-management and conservation strategies. The southern right whale (SRW) Eubalena australis was one of the baleen whale species that has experienced centuries of exploitation. We assess here for the first time the population dynamics of the SRW from the southwestern Atlantic Ocean at the regional level to measure numerically the effect of whaling and estimate the population trend and recovery level after depletion. We reconstructed the catch history of whaling for the period 1670-1973 by an extensive review of different literature sources and developed a Bayesian state-space model to estimate the demographic parameters. The population trajectory indicated that the pre-exploitation abundance was close to 58,000 individuals (median = 58,212; 95% CI = 33,329-100,920). The abundance dropped to its lowest abundance levels in the 1830s when fewer than 2,000 individuals remained. The current median population abundance was estimated at 4,742 whales (95% CI = 3,853-6,013), suggesting that the SRW population remains small relative to its pre-exploitation abundance (median depletion P2021 8.7%). We estimated that close to 36% of the SRW population visits the waters of the Península Valdés, the main breeding ground, every year. Our results provide insights into the severity of the whaling operation in the southwestern Atlantic along with the population´s response at low densities, thus contributing to understand the observed differences in population trends over the distributional range of the species worldwide.


Assuntos
Baleias , Animais , Oceano Atlântico , Teorema de Bayes , Dinâmica Populacional
6.
Rev Esp Cir Ortop Traumatol ; 66(4): 290-297, 2022.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-34362701

RESUMO

INTRODUCTION: The SCAE-SM (Request for an Appointment in Specialized Care-Suspicion of Malignancy) computer application is a tool available to Primary Care (PC) physicians for the referral of patients who should be evaluated by the specialist in a maximum period of 2 weeks when malignancy is suspected. The objective of our work was to analyze the usefulness of this tool and propose areas for improvement in the management of patients with suspected musculoskeletal malignancy. MATERIAL AND METHODS: A descriptive cross-sectional study of 235 referrals received in the years 2012-2017 was carried out. Their origin, the information contained in the applications and the response provided by historical evaluators, without specific oncology training, were analyzed. For this study, a new blind assessment of all applications was carried out by 13 orthopedists with different levels of specific training in musculoskeletal oncology (re-evaluators). RESULTS: Among all SCAE-SM, only 8.23% of patients had aggressive benign or malignant disease. The most successful re-evaluators in the adequacy of early appointment were those with moderate oncological training (5-10 years of experience). During the study, of all the patients treated in the Tumor Unit, only 18.81% accessed through the SCAE-SM circuit, with a mean waiting time of 18.11 days from the PC referral. CONCLUSIONS: The SCAE-SM computer application as tool for improve the management and advance care for patients with malignant musculoskeletal tumor pathology is useful, although the use of the circuit is inadequate. It is necessary to disseminate and generalize it, as well as to implement basic oncology training programs both in the field of PC and Hospital.

7.
Med Intensiva (Engl Ed) ; 45(9): 532-540, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34839884

RESUMO

OBJECTIVE: Hemodynamic resuscitation is considered a cornerstone of the initial treatment of septic shock. However, there is growing concern about its side effects. Our objective was to assess the relationship between fluid administration and norepinephrine infusion and the development of lung injury. DESIGN: Randomized in vivo study in rabbits. SETTING: University animal research laboratory. PATIENTS: Eighteen New Zealand rabbits. Control group (SHAM, n=6), Sepsis group with or without hemodynamic resuscitation (ETX-R, n=6; ETX-NR, n=6). INTERVENTIONS: Sepsis was induced by intravenous lipopolysaccharide administration and animals were followed-up for 4h. Hemodynamic resuscitation with Ringer lactate (20mL·kg-1) was administered and later norepinephrine was initiated 3h after sepsis induction. At the end, the left lung was excised. MAIN VARIABLES OF INTEREST: An indwelling arterial catheter and an esophageal Doppler were placed. Lung mechanics were monitored with side stream spirometry. Lung damage was analyzed by histopathological examination. RESULTS: The SHAM group did not show hemodynamic or respiratory changes. Lipopolysaccharide administration aimed an increase in cardiac output and arterial hypotension. In the ETX-NR group, animals remained hypotensive until the end of the experiment. Resuscitation with fluids and norepinephrine reversed arterial hypotension. Compared to the ETX-NR group, the remaining lung of the ETX-R group showed greater accumulation of neutrophils and reactive type-II pneumocytes, thicker alveolar wall, alveolar hemorrhage and non-aerated pulmonary areas. Lung injury score was larger in the ETX-R group. CONCLUSIONS: In our experimental study, following a strategy with bolus fluids and late norepinephrine used in the early phase of endotoxic septic shock has a negative influence on the development of lung injury.


Assuntos
Choque Séptico , Animais , Hemodinâmica , Humanos , Pulmão , Modelos Teóricos , Norepinefrina , Coelhos , Choque Séptico/terapia
8.
J Immunol Methods ; 496: 113085, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-34157319

RESUMO

The chemical coupling of a protoplasmatic antigen from Mycobacterium avium subsp. paratubeculosis onto core-shell carboxylated particles was investigated with the aim of producing latex-protein complexes to be used in immunoagglutination assays capable of detecting bovine paratuberculosis disease. For this purpose, sensitizations were carried out using both colored and not colored carboxylated latexes as well as the protoplasmatic antigen at pH close to its isoelectric point to favor the antigenic protein to approach the particle surface. In all cases, higher fractions of proteins were chemically-bound to carboxyl groups on the surface of the particles. The assessment of the performance of the visual immunoagglutination assays consisted of evaluating 111 sera from healthy and infected bovines with Mycobacterium avium subsp. paratuberculosis. Complexes obtained from the colored latex allowed an acceptable visual discrimination between the studied positive and negative sera. Most of the positive samples showed strong to very strong agglutination and only a few samples reacted weakly, i.e. a sensitivity of 70%. The specificity of the assay, on the other hand, was 86%. Therefore, this rapid detection technique allows an easy and inexpensive identification of animals possibly infected with paratuberculosis "in situ" in the herds.


Assuntos
Antígenos de Bactérias/imunologia , Testes de Fixação do Látex/veterinária , Látex/química , Mycobacterium avium subsp. paratuberculosis/imunologia , Paratuberculose/diagnóstico , Animais , Estudos de Casos e Controles , Bovinos , Cor , Microesferas , Paratuberculose/imunologia , Paratuberculose/microbiologia , Valor Preditivo dos Testes , Fatores de Tempo , Fluxo de Trabalho
9.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-32798164

RESUMO

INTRODUCTION AND OBJECTIVES: The concept subtle Lisfranc defines low energy lesions of the tarsometatarsal joint complex (TMC) that involve joint instability. Often unnoticed, with long-term sequelae. The objective is to evaluate the clinical-functional results of patients with MTC ligament damage grade II-III (Nunley and Vertullo classification) treated with percutaneous surgery. MATERIAL AND METHODS: Retrospective study of 16 patients who underwent percutaneous surgery for MLC ligament damage. Demographic data, days of delay in diagnosis, surgical technique, joint reduction in load (adequate if C1-M2 space is less than 2 mm) and Manchester-Oxford scale (MOXFQ) score were collected. The sample consisted of nine males and seven females, mean age 43.6 years (17-71) and mean follow-up of 22 months (12-28). RESULTS: Diagnosis was delayed for more than 24 hours in four patients (3-6 days). In 11 patients the treatment consisted of closed reduction and percutaneous synthesis with cannulated screws from M2 to C1 and from C1 to C2. In three patients it was supplemented with Kirschner wires in the lateral radii. Two patients were treated with only M2 to C1 screws. An anatomical reduction was not achieved in six patients, with a mean of 2.6 mm between C1-M2 (2.1-3 mm); the mean functional MOXFQ score of these patients was 41.1% (IC 95% 23.1-59.1%), worse results compared to the anatomical reduction: 17.2% (IC 95% 5.7-28.7); statistically significant difference (p < 0.01). CONCLUSION: Subtle injuries from MTC are rare and can go unnoticed. Surgical treatment with percutaneous synthesis offers good clinical-functional results in the medium term. The anatomical reduction is a determining factor for the good functional result of our patients.


Assuntos
Fraturas Ósseas/cirurgia , Ligamentos Articulares/lesões , Ossos do Metatarso/lesões , Articulação Metatarsofalângica/lesões , Adolescente , Adulto , Idoso , Parafusos Ósseos , Fios Ortopédicos , Diagnóstico Tardio , Feminino , Fraturas Ósseas/diagnóstico por imagem , Humanos , Instabilidade Articular/etiologia , Instabilidade Articular/cirurgia , Ligamentos Articulares/diagnóstico por imagem , Ligamentos Articulares/cirurgia , Masculino , Ossos do Metatarso/diagnóstico por imagem , Articulação Metatarsofalângica/diagnóstico por imagem , Pessoa de Meia-Idade , Estudos Retrospectivos , Fatores de Tempo , Resultado do Tratamento , Adulto Jovem
10.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-32718740

RESUMO

OBJECTIVE: Hemodynamic resuscitation is considered a cornerstone of the initial treatment of septic shock. However, there is growing concern about its side effects. Our objective was to assess the relationship between fluid administration and norepinephrine infusion and the development of lung injury. DESIGN: Randomized in vivo study in rabbits. SETTING: University animal research laboratory. PATIENTS: Eighteen New Zealand rabbits. Control group (SHAM, n=6), Sepsis group with or without hemodynamic resuscitation (ETX-R, n=6; ETX-NR, n=6). INTERVENTIONS: Sepsis was induced by intravenous lipopolysaccharide administration and animals were followed-up for 4h. Hemodynamic resuscitation with Ringer lactate (20mL·kg-1) was administered and later norepinephrine was initiated 3h after sepsis induction. At the end, the left lung was excised. MAIN VARIABLES OF INTEREST: An indwelling arterial catheter and an esophageal Doppler were placed. Lung mechanics were monitored with side stream spirometry. Lung damage was analyzed by histopathological examination. RESULTS: The SHAM group did not show hemodynamic or respiratory changes. Lipopolysaccharide administration aimed an increase in cardiac output and arterial hypotension. In the ETX-NR group, animals remained hypotensive until the end of the experiment. Resuscitation with fluids and norepinephrine reversed arterial hypotension. Compared to the ETX-NR group, the remaining lung of the ETX-R group showed greater accumulation of neutrophils and reactive type-II pneumocytes, thicker alveolar wall, alveolar hemorrhage and non-aerated pulmonary areas. Lung injury score was larger in the ETX-R group. CONCLUSIONS: In our experimental study, following a strategy with bolus fluids and late norepinephrine used in the early phase of endotoxic septic shock has a negative influence on the development of lung injury.

11.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-30922598

RESUMO

OBJECTIVES: 1) to set a reminder of the diagnostic approach to osteoid osteomas (OOs) of the foot; 2) to define the indications of treatment for hindfoot OOs. MATERIAL AND METHOD: 5 OOs were checked (3 cases located in the talus and two cases in calcaneus). The diagnosis was established by clinical and imaging data. In all cases, a calcified nidus was identified on CT, perilesional bone oedema on MRI and focal scintigraphic uptake. Two cases were treated with radiofrequency ablation (RFA) and 3 cases with surgical resections: two open surgeries and one arthroscopic surgery. Clinical and oncological outcomes were evaluated at the end of the follow-up. RESULTS: No complications were reported. The clinical outcome was excellent in all cases. One patient was initially treated with open surgery and then subsequently with RFA due to failure of the procedure. There were no recurrences after an average follow-up time of 4 years and 8 months (range, 1-12 years). DISCUSSION: Hindfoot OOs are uncommon and their diagnosis is based on clinical data in conjunction with characteristic imaging findings. Their treatment choices depend on the location of the nidus and relationships with nearby anatomical structures. CONCLUSIONS: The diagnosis of an OO of the hindfoot can be ensured when the epidemiological, clinical and imaging data are compatible with this pathological entity. RFA is indicated for intracortical or cancellous cases in which the nidus is more than 1cm off the skin and significant neurovascular structures. For all other cases an open surgical resection or arthroscopic resection would be the first choice.


Assuntos
Neoplasias Ósseas/diagnóstico por imagem , Neoplasias Ósseas/cirurgia , Doenças do Pé/diagnóstico por imagem , Doenças do Pé/cirurgia , Osteoma Osteoide/diagnóstico por imagem , Osteoma Osteoide/cirurgia , Adolescente , Adulto , Artroscopia , Calcâneo , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Ablação por Radiofrequência , Tálus , Tomografia Computadorizada por Raios X , Adulto Jovem
12.
Cell Mol Biol (Noisy-le-grand) ; 63(9): 53-58, 2017 Sep 30.
Artigo em Inglês | MEDLINE | ID: mdl-28980934

RESUMO

Past several years have witnessed dramatic leaps in our understanding of rewiring of gene expression at the translation level during cancer developmentthat provides linchpin support to the transformed phenotype. Most recent and ground-breaking developments in the field of molecular oncology aredriven by an explosion in technological advancements and have started to reveal previously unimagined regulatory mechanisms and how they intricately co-ordinate to modulate cancer progression, loss of apoptosis and development of resistance against different therapeutics. However, the insights gained from work in this natural product research have far-reaching impact because of rapidly increasing repertoire of medicinally and biologically efficient phytochemicals. How Tanshinones mediate targeting of JAK-STAT, ER stress associated signaling cascade,PI3K/AKT/mTOR pathway,autophagy, TRAIL pathway and microRNAs are being discovered and will prove to be helpful in getting a step closer to personalized medicine.


Assuntos
Abietanos/uso terapêutico , Antineoplásicos Fitogênicos/uso terapêutico , Neoplasias/tratamento farmacológico , Transdução de Sinais/efeitos dos fármacos , Abietanos/farmacologia , Animais , Antineoplásicos Fitogênicos/farmacologia , Apoptose/efeitos dos fármacos , Autofagia/efeitos dos fármacos , Avaliação Pré-Clínica de Medicamentos , Humanos , Sistema de Sinalização das MAP Quinases/efeitos dos fármacos , Metaloproteinases da Matriz/metabolismo , Neoplasias/metabolismo , Fosfatidilinositol 3-Quinases/metabolismo , Proteínas Proto-Oncogênicas c-akt/metabolismo , Ligante Indutor de Apoptose Relacionado a TNF/metabolismo , Serina-Treonina Quinases TOR/metabolismo
13.
Sci Rep ; 7(1): 5271, 2017 07 13.
Artigo em Inglês | MEDLINE | ID: mdl-28706228

RESUMO

An understanding of the underlying processes and comprehensive history of population growth after a harvest-driven depletion is necessary when assessing the long-term effectiveness of management and conservation strategies. The South American sea lion (SASL), Otaria flavescens, is the most conspicuous marine mammal along the South American coasts, where it has been heavily exploited. As a consequence of this exploitation, many of its populations were decimated during the early 20th century but currently show a clear recovery. The aim of this study was to assess SASL population recovery by applying a Bayesian state-space modelling framework. We were particularly interested in understanding how the population responds at low densities, how human-induced mortality interplays with natural mechanisms, and how density-dependence may regulate population growth. The observed population trajectory of SASL shows a non-linear relationship with density, recovering with a maximum increase rate of 0.055. However, 50 years after hunting cessation, the population still represents only 40% of its pre-exploitation abundance. Considering that the SASL population in this region represents approximately 72% of the species abundance within the Atlantic Ocean, the present analysis provides insights into the potential mechanisms regulating the dynamics of SASL populations across the global distributional range of the species.


Assuntos
Teorema de Bayes , Conservação dos Recursos Naturais , Biologia Marinha , Leões-Marinhos/crescimento & desenvolvimento , Animais , Densidade Demográfica , Dinâmica Populacional , Crescimento Demográfico
14.
Cell Mol Biol (Noisy-le-grand) ; 63(2): 1-8, 2017 Feb 28.
Artigo em Inglês | MEDLINE | ID: mdl-28364793

RESUMO

Overwhelmingly increasing scientific evidence has provided near complete resolution of prostate cancer landscape and it is now more understandable that wide ranging factors underlies its development and progression. Increasingly it is being realized that genetic/epigenetic factors, Intra-tumoral and inter-tumoral heterogeneity, loss of apoptosis, dysregulations of spatio-temporally controlled signaling cascades, Darwinian evolution in response to therapeutic pressures play instrumental role in prostate carcinogenesis. Moreover, multi-directional patterns of spread between primary tumors and metastatic sites have also been studied extensively in prostate cancer. Research over the years has gradually and systematically revealed closer association between tumor phenotype and type of gene fusion. Latest developments in deep sequencing technologies have shown that gene fusions originate in a non-random, cell type dependent manner and are much more frequent than previously surmised. These findings enabled sub-classification and categorization of seemingly identical diseases. Furthermore, research methodologies have shown that many gene fusions inform us about risk stratification and many chimeric proteins encoded by the fused genes are being studied as drug target/s. We partition this multi-component review into the molecular basis of formation of fusion transcripts, how protein network is regulated in fusion positive prostate cancer cells and therapeutic strategies which are currently being investigated to efficiently target fusion transcript and its protein product.


Assuntos
Perfilação da Expressão Gênica , Regulação Neoplásica da Expressão Gênica , Proteínas de Fusão Oncogênica/genética , Neoplasias da Próstata/genética , Transdução de Sinais/genética , Apoptose/genética , Reparo do DNA por Junção de Extremidades/genética , Humanos , Masculino , Modelos Genéticos , Proteínas de Fusão Oncogênica/metabolismo , Neoplasias da Próstata/tratamento farmacológico , Neoplasias da Próstata/metabolismo
15.
Epidemiol Infect ; 145(7): 1382-1391, 2017 05.
Artigo em Inglês | MEDLINE | ID: mdl-28166858

RESUMO

Mycobacterium avium sp. avium (MAA), M. avium sp. hominissuis (MAH), and M. avium sp. paratuberculosis (MAP) are the main members of the M. avium complex (MAC) causing diseases in several hosts. The aim of this study was to describe the genetic diversity of MAC isolated from different hosts. Twenty-six MAH and 61 MAP isolates were recovered from humans and cattle, respectively. GenoType CM® and IS1311-PCR were used to identify Mycobacterium species. The IS901-PCR was used to differentiate between MAH and MAA, while IS900-PCR was used to identify MAP. Genotyping was performed using a mycobacterial interspersed repetitive-unit-variable-number tandem-repeat (MIRU-VNTR) scheme (loci: 292, X3, 25, 47, 3, 7, 10, 32) and patterns (INMV) were assigned according to the MAC-INMV database (http://mac-inmv.tours.inra.fr/). Twenty-two (22/26, 84·6%) MAH isolates were genotyped and 16 were grouped into the following, INMV 92, INMV 121, INMV 97, INMV 103, INMV 50, and INMV 40. The loci X3 and 25 showed the largest diversity (D: 0·5844), and the global discriminatory index (Hunter and Gaston discriminatory index, HGDI) was 0·9300. MAP (100%) isolates were grouped into INMV 1, INMV 2, INMV 11, INMV 8, and INMV 5. The HGDI was 0·6984 and loci 292 and 7 had the largest D (0·6980 and 0·5050). MAH presented a higher D when compared with MAP. The MIRU-VNTR was a useful tool to describe the genetic diversity of both MAH and MAP as well as to identify six new MAH patterns that were conveniently reported to the MAC-INMV database. It was also demonstrated that, in the geographical region studied, human MAC cases were produced by MAH as there was no MAA found among the human clinical samples.


Assuntos
Variação Genética , Genótipo , Complexo Mycobacterium avium/genética , Infecção por Mycobacterium avium-intracellulare/veterinária , Paratuberculose/epidemiologia , Tuberculose Bovina/epidemiologia , Animais , Argentina/epidemiologia , Bovinos , Humanos , Infecção por Mycobacterium avium-intracellulare/epidemiologia , Infecção por Mycobacterium avium-intracellulare/microbiologia , Paratuberculose/microbiologia , Filogenia , Reação em Cadeia da Polimerase/veterinária , Análise de Sequência de DNA/veterinária , Tuberculose Bovina/microbiologia
17.
Chem Commun (Camb) ; 52(37): 6245-8, 2016 May 07.
Artigo em Inglês | MEDLINE | ID: mdl-27087437

RESUMO

A method for the phototriggered release of a biogenic amine from the host-guest complex with the cucurbit[7]uril macrocycle in aqueous solution was devised. The approach exploits a photoinduced pH jump from 8 to 5, combined with the pH-dependent switching of the competitive capacity of a guest dye. The fluorescence fingerprint of the competitor can be used to monitor the amine release in the micromolar concentration regime.


Assuntos
Aminas/química , Corantes Fluorescentes/química , Compostos Macrocíclicos/química , Concentração de Íons de Hidrogênio , Estrutura Molecular , Processos Fotoquímicos
18.
Transplant Proc ; 47(6): 1998-2002, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26293088

RESUMO

With the limitations of surgical reconstructive procedures, the growing number of gunshot wounds, burns, and work accidents in Mexico that result in complex facial deformities leaves only 1 option-face transplantation. The National Institute of Medical Sciences and Nutrition "Salvador Zubiran" (INCMNSZ) has performed transplants since 1971. We at INCMNSZ undertook the 1st bilateral upper-limb transplantation in Latin America in 2012. We are willing to continue in this manner toward conducting face transplantation at our institute. To this end, we identified and solved various challenges. The 1st challenge was acceptance and inclusion of vascularized composite allotransplantation (VCA) within general Mexican health law and approval of the face transplantation procedure. Subsequently, the health ministry provided a license to INCMNSZ to perform the procedure. The 2nd challenge concerned who would pay for the procedure. The costs will be paid by the patient (1st-party payer), social security institutions (2nd-party payers), and the health ministry (3rd-party payer). The 3rd challenge was to maintain ongoing surgical training of the team using cadavers. The fourth challenge was to locate donors; toward this end, we developed a campaign for promoting face donation in social media, making a comic book, and training organ and tissue coordinators to further VCA. Thus, INCMNSZ has the legal, administrative, medical, and surgical wherewithal to accomplish face transplantation.


Assuntos
Face/cirurgia , Traumatismos Faciais/cirurgia , Transplante de Face/métodos , Doadores de Tecidos , Cadáver , Traumatismos Faciais/epidemiologia , Humanos , Incidência , México/epidemiologia , Alotransplante de Tecidos Compostos Vascularizados/métodos
19.
Genet Mol Res ; 14(2): 6094-100, 2015 Jun 10.
Artigo em Inglês | MEDLINE | ID: mdl-26125810

RESUMO

We investigated the expression of Brother of Regulator of Imprinted Sites (BORIS) and CCCTC-binding factor (CTCF) in squamous intraepithelial lesions and cervical cancer. To analyze BORIS and CTCF expression, an endocervical cytobrush sample was taken for total RNA isolation. CTCF and BORIS mRNA was quantified from total RNA using quantitative reverse transcription-polymerase chain reaction. A total of 71 samples were collected and classified according to the Bethesda Classification of squamous intraepithelial lesions. BORIS expression was observed in 9 (12.7%) samples; of these, 5.3, 5.9, 14.8, and 37.5% in the groups that were cytology negative for intraepithelial lesion or malignancy, low-grade squamous intraepithelial lesions (LSIL), high-grade squamous intraepithelial lesions (HSIL), and invasive cervical carcinoma, respectively. The expression level of BORIS was significantly higher in the group with invasive cervical carcinoma as compared with the groups negative for intraepithelial lesion or malignancy, LSIL, and HSIL (P < 0.0005). CTCF mRNA was expressed in all samples. CTCF expression was significantly higher in carcinoma groups compared with LSIL, HSIL, and negative for intraepithelial lesion or malignancy groups. We found that BORIS and CTCF expressions in the LSIL and invasive cervical carcinoma groups were higher than expression in cytological normal samples. Additional studies should be conducted to examine the function of transcription factors during different stages of the transformation of cervical cancer cells.


Assuntos
Proteínas de Ligação a DNA/genética , Proteínas Repressoras/genética , Lesões Intraepiteliais Escamosas Cervicais/genética , Lesões Intraepiteliais Escamosas Cervicais/patologia , Neoplasias do Colo do Útero/genética , Neoplasias do Colo do Útero/patologia , Adolescente , Adulto , Biomarcadores Tumorais/genética , Fator de Ligação a CCCTC , Estudos Transversais , Feminino , Regulação Neoplásica da Expressão Gênica , Humanos , Pessoa de Meia-Idade , Prognóstico , Adulto Jovem
20.
Acta Ortop Mex ; 29(6): 288-94, 2015.
Artigo em Espanhol | MEDLINE | ID: mdl-27403515

RESUMO

PURPOSE: The purpose of this study is to analyze if there is any difference between the arthroscopic reparation of full-thickness supraspinatus tears with simple row technique versus suture bridge technique. MATERIAL AND METHODS: We accomplished a retrospective study of 123 patients with full-thickness supraspinatus tears between January 2009 and January 2013 in our hospital. There were 60 simple row reparations, and 63 suture bridge ones. RESULTS: The mean age in the simple row group was 62.9, and in the suture bridge group was 63.3 years old. There were more women than men in both groups (67%). All patients were studied using the Constant test. The mean Constant test in the suture bridge group was 76.7, and in the simple row group was 72.4. We have also accomplished a statistical analysis of each Constant item. Strength was higher in the suture bridge group, with a significant statistical difference (p 0.04). The range of movement was also greater in the suture bridge group, but was not statistically significant. CONCLUSIONS: Suture bridge technique has better clinical results than single row reparations, but the difference is not statistically significant (p = 0.298).


OBJETIVO: Analizar si existen diferencias clínicas entre las técnicas «hilera simple¼; versus «. MATERIAL Y MÉTODOS: suture bridge¼; en la reparación artroscópica de roturas de espesor completo del supraespinoso. Estudio retrospectivo de 123 pacientes con rotura de espesor completo del supraespinoso, intervenidos entre Enero de 2009 y Enero de 2013 (60 hilera simple y 63. RESULTADOS: suture bridge). La edad media en el grupo suture bridge fue 63.3 años y en el grupo hilera simple, 62.9. Predominio de mujeres (67%) en ambos grupos. En todos los casos, se reparó la hilera medial con anclajes Bio-Corkscrew y la hilera lateral con implantes Bio-PushLock (Arthrex, Naples, FL). El valor del test de Constant medio en individuos intervenidos mediante. CONCLUSIONES: suture bridge fue 76.7 (ponderado 96.5). En hilera simple, fue 72.4 (ponderado 92.8). Se realizó también un análisis estadístico comparativo de cada ítem del test de Constant por separado. La fuerza es el único parámetro del test de Constant estadísticamente significativo y es mayor en el grupo suture bridge. La reparación de las roturas de espesor completo del supraespinoso mediante.

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