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1.
Malar J ; 22(1): 253, 2023 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-37658450

RESUMO

BACKGROUND: Malaria remains a major public health concern in The Gambia. The study assessed the trend of malaria admissions and outcome of adult patients admitted after the start of the COVID-19 pandemic in a tertiary hospital in The Gambia. METHODS: This was a retrospective hospital-based study and data was collected from the 18th October 2020 to 28th February 2023. Demographic data, clinical features, investigations, treatment, and outcomes were recorded. RESULTS: A total of 499 malaria cases were admitted to the hospital over the 29 months of the study period. Data from 320 (67.2% of the total cases) adult patients admitted into the internal medicine department were analysed. The median age was 22 years, range (15-90) and 189 (59.1%) cases were youth with a youth (15-24 years) to older adult (> 24 years) ratio of 1.4:1. The majority of the patients were male 199 (62.2) with a male to female ratio of 1.6:1. The total number of malaria cases admitted into the internal medicine department increased from 103 cases in 2021 to 182 cases in 2022and admission peaked in November in both years. The total number of admitted malaria cases during the peak of the malaria season also increased from 92 patients between September 2021 and December 2021 to 132 patients from September 2022 to December 2022.There was also an increase in both severe and uncomplicated malaria during the same period. The total mortality was 31 (9.7%) and the rate was similar in 2021 9 (8.7%) and 2022 15 (8.4%). Patients with impaired consciousness were more likely to die when compared to those without impaired consciousness [19 (23.6%) vs 12 (5%), p ≤ 0.001]. Patients with acute kidney injury were also more likely to die when compared with those without acute kidney injury [10 (20.4%) vs 15 (7.7%), p = 0.009]. CONCLUSION: The findings show an emerging and consistent trend of malaria admissions and the outcome in the youth and older adult population after the start of the COVID-19 pandemic in The Gambia. This, therefore, suggests the need for the implementation of targeted malaria prevention interventions in this population to further prevent the spread of the disease to the more vulnerable population.


Assuntos
Injúria Renal Aguda , COVID-19 , Malária , Adolescente , Humanos , Feminino , Masculino , Idoso , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Idoso de 80 Anos ou mais , Centros de Atenção Terciária , COVID-19/epidemiologia , Gâmbia/epidemiologia , Pandemias , Estudos Retrospectivos , Malária/epidemiologia , Demografia
2.
BMC Gastroenterol ; 23(1): 321, 2023 Sep 20.
Artigo em Inglês | MEDLINE | ID: mdl-37730538

RESUMO

BACKGROUND: As a result of the lack of screening programs and the difficulty in making a proper diagnosis, the majority of hepatocellular carcinoma (HHC) patients present late in low-resource countries. The study therefore assesses the clinical features, stage and prognostic variables of patients with HCC in The Gambia. METHODS: From December 2015 to January 2019, patients with a confirmed diagnosis of HCC were enrolled. All patients' medical history, ultrasound scan, FibroScan and laboratory details were collected. RESULTS: Two hundred and sixty (260) patients were enrolled. The mean age of HCC patients was 40 years, and 210 (80.7%) of them were male. The most common gastrointestinal symptoms were early satiety 229 (88.1%) and abdominal pain 288 (87.7%), while the most common constitutional symptoms were weight loss 237 (91.2%) and easy fatiguability 237 (91.2%). Hepatomegaly 205 (78.8%) was the most common sign. On ultrasound scan, lesions were mostly multifocal 175 (67.3%), and the median FibroScan score was 75 kPa. The median fibrosis 4 and aspartate transferase platelet ratio index were 4.6 and 2.2, respectively. Hepatitis B surface antigen (HBsAg) was positive in 170 (65.4%) patients, and the median AFP level was 3263 ng/ml. HCC patients with positive HBsAg were more likely to be male 145 (85.3%) vs 62 (72.1%) (p = 0.011), much younger 39.9 vs 51.4 yrs (p = < 0.0001), more likely to have abdominal pain 156 (91.8%) vs 68 (79.1%) (p = 0.002), jaundice 78 (45.9%) vs 29 (33.7%) (p = 0.042), dark urine 117 (68.8%) vs 46 (53.5%) (p = 0.018), raised transaminases (Aspartate transaminases 224.5 (32-7886) vs 153 (18-610), p = < 0.01, Alanine transferases 71 (5-937) vs 47 (8-271), p = < 0.001) and decreased platelet count 207 (33-941) vs 252 (52- 641) (p = 0.021) compared to patients with HCC who were HBsAg-negative. CONCLUSIONS: The prognosis of patients with HCC is poor in developing countries such as The Gambia, where screening programs and treatment modalities are scarce. Young males are disproportionately affected, and HBV is a major cause of HCC in The Gambia.


Assuntos
Carcinoma Hepatocelular , Neoplasias Hepáticas , Humanos , Masculino , Adulto , Feminino , Carcinoma Hepatocelular/diagnóstico por imagem , Gâmbia , Ácido Aspártico , Antígenos de Superfície da Hepatite B , Neoplasias Hepáticas/diagnóstico , Prognóstico , Dor Abdominal
3.
Nucleic Acids Res ; 49(W1): W193-W198, 2021 07 02.
Artigo em Inglês | MEDLINE | ID: mdl-34104972

RESUMO

Exon skipping using antisense oligonucleotides (ASOs) has recently proven to be a powerful tool for mRNA splicing modulation. Several exon-skipping ASOs have been approved to treat genetic diseases worldwide. However, a significant challenge is the difficulty in selecting an optimal sequence for exon skipping. The efficacy of ASOs is often unpredictable, because of the numerous factors involved in exon skipping. To address this gap, we have developed a computational method using machine-learning algorithms that factors in many parameters as well as experimental data to design highly effective ASOs for exon skipping. eSkip-Finder (https://eskip-finder.org) is the first web-based resource for helping researchers identify effective exon skipping ASOs. eSkip-Finder features two sections: (i) a predictor of the exon skipping efficacy of novel ASOs and (ii) a database of exon skipping ASOs. The predictor facilitates rapid analysis of a given set of exon/intron sequences and ASO lengths to identify effective ASOs for exon skipping based on a machine learning model trained by experimental data. We confirmed that predictions correlated well with in vitro skipping efficacy of sequences that were not included in the training data. The database enables users to search for ASOs using queries such as gene name, species, and exon number.


Assuntos
Bases de Dados de Ácidos Nucleicos , Éxons , Aprendizado de Máquina , Oligonucleotídeos Antissenso/química , Software , Internet , Íntrons , Splicing de RNA , Análise de Sequência
4.
Heart Fail Rev ; 27(1): 219-234, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-32583230

RESUMO

Recent cardiovascular outcome trials have highlighted the propensity of the antidiabetic agents, SGLT2 inhibitors (SGLT2is or -flozin drugs), to exert positive clinical outcomes in patients with cardiovascular disease at risk for major adverse cardiovascular events (MACEs). Of interest in cardiac diabetology is the physiological status of the patient with T2DM and heart failure with preserved ejection fraction (HFpEF), a well-examined association. Underlying this pathologic tandem are the effects that long-standing hyperglycemia has on the ability of the HFpEF heart to adequately deliver oxygen. It is believed that shortcomings in oxygen diffusion or utilization and the resulting hypoxia thereafter may play a role in underlying the clinical sequelae of patients with T2DM and HFpEF, with implications in the long-term decline of extra-cardiac tissue. Oxygen consumption is one of the most critical factors in indexing heart failure disease burden, warranting a probe into the role of SGLT2i on oxygen utility in HFpEF and T2DM. We investigated the role of oxygen flux in the patient with T2DM and HFpEF extending beyond the heart with focuses on cellular metabolism, perivascular fibrosis with endothelial dysfunction, hematologic changes, and renal effects with neurohormonal considerations in the patient with HFpEF and T2DM. Moreover, we give a commentary on potential therapeutic targets of these components with SGLT2i to gain insight into disease burden amelioration in patients with HFpEF and T2DM.


Assuntos
Diabetes Mellitus , Insuficiência Cardíaca , Inibidores do Transportador 2 de Sódio-Glicose , Insuficiência Cardíaca/tratamento farmacológico , Humanos , Miocárdio , Oxigênio , Volume Sistólico
5.
Malar J ; 21(1): 270, 2022 Sep 21.
Artigo em Inglês | MEDLINE | ID: mdl-36131306

RESUMO

BACKGROUND: Malaria is a major public health concern in The Gambia. There is limited data on the clinical manifestation and outcome of severe malaria in adult patients in The Gambia. The study therefore assessed the clinical manifestations and outcome of severe malaria in adult patients admitted at the Edward Francis Small Teaching Hospital. METHODS: The study retrospectively reviewed the records of all malaria patients admitted from 18th October 2020 to 2nd February 2022. Demographic data, clinical features, investigations, treatment, and outcomes were recorded. RESULTS: A total of 131 confirmed malaria patients were recruited into the study. The median age was 21 yrs, range (15-90) and most of them were within the youth age group (15-24yrs) 85 (64.9%). The majority of the patients were also male 88 (67.2%) with a male to female ratio of 2:1. The most common symptom at presentation was fever 119 (90.8%) and the most common sign was pallor 48 (36.6%). Seventy-six patients (58.1%) and 55 (41.9%) patients met the criteria for severe malaria and uncomplicated malaria diagnosis, respectively. The most common clinical feature amongst patients with severe malaria were impaired consciousness 34 (44.7%), severe anaemia 26 (34.2%) and acute kidney injury 20 (26.3%). Patients with severe malaria were younger with mean age of 22.9 vs. 29 yrs (p = 0.004), more likely to be referred from a lower-level health facility 62 (81.6%) vs. 34 (61.8%) (p = 0.012), to have a longer duration of admission (p = 0.024) and to die 13 (17.1%) vs. 0 (0%) (p = 0.001) as compared to patients with uncomplicated malaria. The total mortality was 13 (9.9%) and all the patients who died had severe malaria. Mortality was higher in patients with impaired consciousness 9 (26.5%) and there was a significant relationship between death and impaired consciousness 9 (69.3%) vs. 25 (21.4%) p = 0.001. CONCLUSION: Severe malaria still affects young adults in an endemic area with significant mortality. This suggests the need for targeted malaria prevention, surveillance, case management and control strategies in this population group in The Gambia to help reduce morbidity and mortality of malaria.


Assuntos
Anemia , Malária Falciparum , Malária , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Anemia/epidemiologia , Feminino , Gâmbia/epidemiologia , Humanos , Malária/complicações , Malária/diagnóstico , Malária/epidemiologia , Malária Falciparum/complicações , Malária Falciparum/tratamento farmacológico , Malária Falciparum/epidemiologia , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Centros de Atenção Terciária , Adulto Jovem
6.
Arch Toxicol ; 96(1): 1-9, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-34797383

RESUMO

Duchenne muscular dystrophy (DMD) afflicts 1 in 5000 newborn males, leading to progressive muscle weakening and the loss of ambulation between the ages of 8 and 12. Typically, DMD patients pass away from heart failure or respiratory failure. Currently, there is no cure, though exon-skipping therapy including eteplirsen (brand name Exondys 51), a synthetic antisense oligonucleotide designed to skip exon 51 of the dystrophin gene, is considered especially promising. Applicable to approximately 14% of DMD patients, a phosphorodiamidate morpholino oligomer (PMO) antisense oligonucleotide eteplirsen received accelerated approval by the US Food and Drug Administration (FDA) in 2016. Throughout clinical trials, eteplirsen has been well tolerated by patients with no serious drug-related adverse events. The most common events observed are balance disorder, vomiting, and skin rash. Despite its safety and promise of functional benefits, eteplirsen remains controversial due to its low production of dystrophin. In addition, unmodified PMOs have limited efficacy in the heart. To address these concerns of efficacy, eteplirsen has been conjugated to a proprietary cell-penetrating peptide; the conjugate is called SRP-5051. Compared to eteplirsen, SRP-5051 aims to better prompt exon-skipping and dystrophin production but may have greater toxicity concerns. This paper reviews and discusses the available information on the efficacy, safety, and tolerability data of eteplirsen and SRP-5051 from preclinical and clinical trials. Issues faced by eteplirsen and SRP-5051, including efficacy and safety, are identified. Lastly, the current state of eteplirsen and exon-skipping therapy in general as a strategy for the treatment of DMD are discussed.


Assuntos
Distrofia Muscular de Duchenne , Criança , Éxons , Humanos , Recém-Nascido , Masculino , Morfolinos/efeitos adversos , Distrofia Muscular de Duchenne/tratamento farmacológico , Distrofia Muscular de Duchenne/genética , Oligonucleotídeos Antissenso/genética , Oligonucleotídeos Antissenso/uso terapêutico
7.
Heart Fail Rev ; 26(3): 643-652, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33169337

RESUMO

Recent clinical trials involving the systemic effects of sodium-glucose cotransporter 2 inhibitors (SGLT2i) have revealed beneficial outcomes pertaining to the microvascular sequelae of type 2 diabetes mellitus (T2DM) such as nephropathy, as well as macrovascular effects such as major adverse cardiovascular effects (MACE). Such findings have spurred the elevation of these agents to level A-tiers of recommendation within clinical guidelines addressing the management of complicated T2DM. While the mechanisms of SGLTi (-flozin drugs) are still being elucidated, a paucity of data exists within the literature appraising the role of neuromodulation and associated mechanisms in the aforementioned outcome studies. Given the role of the nervous system in orchestrating the pathologic processes that hamper cardio-renal status, insight into this topic offers an expanded perspective on T2DM. In this review we investigate the mechanisms by which SGLTi improve cardio-renal function in T2DM patients with emphases on neural tone and nervous system physiology.


Assuntos
Diabetes Mellitus Tipo 2 , Inibidores do Transportador 2 de Sódio-Glicose , Compostos Benzidrílicos , Canagliflozina , Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/tratamento farmacológico , Glucosídeos , Humanos , Hipoglicemiantes/uso terapêutico , Rim/fisiologia , Sistema Nervoso , Inibidores do Transportador 2 de Sódio-Glicose/uso terapêutico
8.
Catheter Cardiovasc Interv ; 98(1): E91-E105, 2021 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-32725874

RESUMO

Acute kidney injury (AKI) is an ominous predictor of mortality in cardiogenic shock. The present review examines the pathophysiology of AKI in cardiogenic shock (CS), summarizes the pertinent literature including the diagnostic criteria/definitions for AKI and possible role of biomarkers, and identifies risk factors and possible therapeutic interventions for AKI in CS. Our review finds that AKI is common in patients with CS and is associated with increased morbidity and mortality. Urinary biomarkers of renal tubular injury appear more sensitive for detection of AKI but have yet to be incorporated into daily practice. Emerging data would suggest vasopressor choices, mechanical circulatory support, and renal replacement therapy may have important therapeutic roles in the management of CS.


Assuntos
Injúria Renal Aguda , Infarto do Miocárdio , Injúria Renal Aguda/diagnóstico , Injúria Renal Aguda/etiologia , Injúria Renal Aguda/terapia , Biomarcadores , Humanos , Choque Cardiogênico/diagnóstico , Choque Cardiogênico/etiologia , Choque Cardiogênico/terapia , Resultado do Tratamento
9.
Catheter Cardiovasc Interv ; 98(6): 1120-1132, 2021 11 15.
Artigo em Inglês | MEDLINE | ID: mdl-33185335

RESUMO

OBJECTIVE: To perform a detailed analysis of published data regarding intravascular volume expansion to prevent contrast-associated acute kidney injury (CA-AKI) and to determine if an ideal dose of IV fluids can be recommended. BACKGROUND: Administration of contrast media during invasive angiography is associated with CA-AKI. Intravascular volume expansion is the most effective intervention to prevent CA-AKI, yet evidenced based protocols are lacking. METHODS: Literature review and meta-analysis of randomized controlled trials (RCT) of patients receiving IV volume expansion as prophylaxis for CA-AKI was performed. Normal saline, Lactated Ringer's and sodium bicarbonate were included. The primary outcome was incidence of CA-AKI. RESULTS: 37 RCTs studying 12,166 patients were included. Mean age was 67 ± 5 years, 70% of the patients were male. 68% had chronic kidney disease, 41% diabetes, and 30% heart failure. The incidence of CA-AKI was 9.5% (95% CI: 8-12%). IV expansion versus no volume administration was associated with a lower risk of CA-AKI (RR:0.62; 95% CI: 0.49-0.77, p < .001). Intensive IV volume expansion was associated with a reduced risk of CA-AKI(RR: 0.66; 95%CI: 0.52-0.85, p < .01). The intensive IV volume expansion arm received significantly more fluids than the standard protocols: 1,574(1,123 - 1,913) ml versus 849(558-1,067) ml (p = .03) without significant difference in the duration of infusion (median of 12 vs. 17 hr, p = .1) or pulmonary edema (1.7% vs 1.3%, p = .7). CONCLUSIONS: Despite high variability in protocols used, IV volume expansion is effective in preventing CA-AKI. Intensive IVF expansion (median 1.6 L over 17 hr) was associated with decreased risk of CA-AKI.


Assuntos
Injúria Renal Aguda , Meios de Contraste , Injúria Renal Aguda/induzido quimicamente , Injúria Renal Aguda/epidemiologia , Injúria Renal Aguda/prevenção & controle , Idoso , Meios de Contraste/efeitos adversos , Angiografia Coronária/efeitos adversos , Hidratação , Humanos , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento
10.
Am Heart J ; 226: 174-187, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32599258

RESUMO

As the severe acute respiratory syndrome coronavirus 2 virus pandemic continues to grow globally, an association is apparent between patients with underlying cardiovascular disease comorbidities and the risk of developing severe COVID-19. Furthermore, there are potential cardiac manifestations of severe acute respiratory syndrome coronavirus 2 including myocyte injury, ventricular dysfunction, coagulopathy, and electrophysiologic abnormalities. Balancing management of the infection and treatment of underlying cardiovascular disease requires further study. Addressing the increasing reports of health care worker exposure and deaths remains paramount. This review summarizes the most contemporary literature on the relationship of the cardiovascular system and COVID-19 and society statements with relevance to protection of health care workers, and provides illustrative case reports in this context.


Assuntos
Betacoronavirus , Doenças Cardiovasculares/complicações , Infecções por Coronavirus/complicações , Pessoal de Saúde , Pandemias , Pneumonia Viral/complicações , Síndrome Coronariana Aguda/epidemiologia , Adulto , Fatores Etários , Idoso , Antagonistas de Receptores de Angiotensina/efeitos adversos , Antagonistas de Receptores de Angiotensina/uso terapêutico , Inibidores da Enzima Conversora de Angiotensina/efeitos adversos , Arritmias Cardíacas/etiologia , Biomarcadores/sangue , COVID-19 , Cateterismo Cardíaco , Reanimação Cardiopulmonar , Doenças Cardiovasculares/epidemiologia , Doenças Cardiovasculares/mortalidade , Sistema Cardiovascular , Comorbidade , Infecções por Coronavirus/epidemiologia , Infecções por Coronavirus/mortalidade , Infecções por Coronavirus/prevenção & controle , Eletrocardiografia , Evolução Fatal , Feminino , Hospitalização/estatística & dados numéricos , Hospitalização/tendências , Humanos , Masculino , Pessoa de Meia-Idade , Doenças Profissionais/epidemiologia , Doenças Profissionais/prevenção & controle , Pandemias/prevenção & controle , Equipamento de Proteção Individual , Pneumonia Viral/epidemiologia , Pneumonia Viral/mortalidade , Pneumonia Viral/prevenção & controle , SARS-CoV-2 , Função Ventricular
11.
Cardiovasc Diabetol ; 18(1): 84, 2019 06 24.
Artigo em Inglês | MEDLINE | ID: mdl-31234885

RESUMO

Heart disease continues to affect health outcomes globally, accounting for a quarter of all deaths in the United States. Despite the improvement in the development and implementation of guideline-directed medical therapy, the risk of adverse cardiac events remains substantially high. Historically, it has been debated whether omega-3 polyunsaturated fatty acids provide clinical benefit in cardiac disease. The recently published REDUCE-IT trial demonstrated a statistically significant absolute risk reduction of 4.8% in its primary endpoint (cardiovascular death, nonfatal myocardial infarction, nonfatal stroke, coronary revascularization, or unstable angina) with the use of icosapent ethyl, which is a highly purified eicosapentaenoic acid (EPA) ethyl ester. However, the mechanism of action of omega-3 fatty acids is not commonly discussed. Moreover, the use of EPA was not without risk, as the incidence of atrial fibrillation was increased along with a trend towards increased bleeding risk. Thus, our aim is to help explain the function of purified EPA ethyl ester, especially at the molecular level, which will ultimately lead to a better understanding of their clinically observable effects.


Assuntos
Doenças Cardiovasculares/prevenção & controle , Ácido Eicosapentaenoico/análogos & derivados , Hipertrigliceridemia/tratamento farmacológico , Triglicerídeos/sangue , Fibrilação Atrial/induzido quimicamente , Fibrilação Atrial/epidemiologia , Biomarcadores/sangue , Doenças Cardiovasculares/sangue , Doenças Cardiovasculares/diagnóstico , Doenças Cardiovasculares/mortalidade , Suplementos Nutricionais , Regulação para Baixo , Ácido Eicosapentaenoico/efeitos adversos , Ácido Eicosapentaenoico/uso terapêutico , Feminino , Hemorragia/induzido quimicamente , Hemorragia/epidemiologia , Humanos , Hipertrigliceridemia/sangue , Hipertrigliceridemia/diagnóstico , Hipertrigliceridemia/mortalidade , Incidência , Masculino , Ensaios Clínicos Controlados Aleatórios como Assunto , Medição de Risco , Fatores de Risco , Resultado do Tratamento
12.
Microb Pathog ; 134: 103572, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31163251

RESUMO

The common physical and chemical methods for controlling rat pest are less than satisfactory and inhumane. Immunocontraception approach has been considered more humane and it can be accomplished by inducing the relevant host immune response that block further development of reproductive gametes. ZP3 proteins are known to play very important role during sperm-ovum fertilization. It is a self-antigen and only localized in female ovaries. Therefore, an immunization with ZP3 protein elsewhere will induce a generalize host immune response against ZP3 protein. This study employed rat ZP3 (rZP3) gene prepared from its cDNA of Rattus rattus diardii. It was delivered and expressed in vivo by naked plamid DNA (DrZP3) or recombinant ZP3-Adenovirus (Ad-rZP3). Expression studies in vitro with DrZP3 or Ad-ZP3 showed rZP3 proteins were successfully expressed in Vero cells. Hyperimmune serum against rZP3 that were prepared by immunizing several rats with purified rZP3-pichia yeast fusion protein showed it blocked sperms from binding DrZP3-transfected Vero cells. Female Sprague Dawley rats immunized with DrZP3 demonstrated a long-term effect for significant reduction of fertility up to 92.6%. Ovaries from rats immunized with DrZP3 were severely atrophied with disappearance of primordial follicles from ovarian cortex with an increased in the amount of oocyte-free cell clusters. Female rats immunized with Ad-rZP3 demonstrated 27% reduction of fertility. The infertility induced by Ad-rZP3 is comparatively low and ineffective. This could be due to a strong host immune response that suppresses the recombinant virus itself resulted in minimum rZP3 protein presentation to the host immune system. As a result, low antibody titers produced against rZP3 is insufficient to block oocytes from maturity and fertilization. Therefore, immunization with DrZP3 for immunocontraception is more effective than Ad-rZP3 recombinant adenovirus. It is proposed to explore further on the use of adenovirus or other alternative viruses to deliver ZP3 protein and for the development of enhanced expression of rZP3 in target host.


Assuntos
Infecções por Adenoviridae/imunologia , Infecções por Adenoviridae/prevenção & controle , Adenoviridae/genética , Vacinas , Glicoproteínas da Zona Pelúcida/genética , Glicoproteínas da Zona Pelúcida/imunologia , Sequência de Aminoácidos , Animais , Chlorocebus aethiops , Anticoncepção Imunológica , Modelos Animais de Doenças , Feminino , Fertilidade/imunologia , Imunização , Masculino , Glicoproteínas de Membrana/genética , Folículo Ovariano/patologia , Ovário/patologia , Óvulo , Plasmídeos , Ratos , Ratos Sprague-Dawley , Receptores de Superfície Celular/genética , Proteínas Recombinantes de Fusão/genética , Proteínas Recombinantes de Fusão/imunologia , Interações Espermatozoide-Óvulo , Espermatozoides , Células Vero
13.
BMC Cancer ; 16: 461, 2016 07 13.
Artigo em Inglês | MEDLINE | ID: mdl-27411985

RESUMO

BACKGROUND: Cancer therapies that kill cancer cells without affecting normal cells is the ultimate mode of treating cancers. The VP3, an avian virus-derived protein, can specifically initiate cell death through several signal transduction pathways leading to apoptosis. In cancer, chemoresistance and cell survivability implicate the cell surface protein, CD147. METHODS: In this study, transfection of VP3 and silencing of CD147 genes was achieved through the treatment of tumors with pVIVO1-GFP/VP3 (VP3), psiRNA-CD147/2 (shCD147/2), and their combination of CT26 colon cancer cell-induced in mice. The effectiveness of tumor-treatment was ascertained by electrophoresis, TUNEL assay, and flow cytometry analysis. While histopathological and biochemical analysis were used as toxic side effect identification. RESULTS: The tumor growth delay index (TGDI) after treatment with VP3, shCD147/2, and their combination treatments increased by 1.3-, 1.2-, 2.0- and 2.3-fold respectively, over untreated control. The VP3-shCD147/2 combination treatment was more efficacious then either VP3 or shCD147/2 alone in the retardation of mouse CT26 colorectal cell tumor allograft. CONCLUSION: The antitumor effect of the combination treatment is the result of synergistic effects of VP3 and shCD147/2 on the tumor cells resulting in apoptosis. Thus, the study shows that combination of VP3 and shCD147/2 treatment can be developed into a potential approach for anticolorectal cancer treatment regimen.


Assuntos
Apoptose/genética , Basigina/genética , Proteínas do Capsídeo/genética , Neoplasias Colorretais/terapia , Terapia Genética , Aloenxertos/transplante , Animais , Linhagem Celular Tumoral , Neoplasias Colorretais/genética , Terapia Combinada , Feminino , Citometria de Fluxo , Terapia Genética/efeitos adversos , Humanos , Marcação In Situ das Extremidades Cortadas , Camundongos , Camundongos Endogâmicos BALB C , Neoplasias Experimentais , Interferência de RNA , RNA Interferente Pequeno/genética , Transfecção
16.
Mol Biol (Mosk) ; 48(1): 133-41, 2014.
Artigo em Russo | MEDLINE | ID: mdl-25842834

RESUMO

Recombinant adenovirus encoding the VP2 gene of infectious bursal disease virus (ADV-VP2) has shown potent anti-tumour effects due to its capability of apoptotic induction in cancer cells. In the present study, human breast cancer cells MCF-7 and MDA-MB-231 were infected with ADV-VP2. The expression of VP2 protein was registered 4 h post-infection, particularly in MCF-7 cells. Multiple time-point DNA ladder assay demonstrated that ADV-VP2 infected MDA-MB-231 and MCF-7 cells endured apoptosis as early as 8 and 12 h post-infection, respectively. Apoptosis induction in both MDA-MB-231 and MCF-7 cells, albeit different start points, lasted til 36 h post-infection. The induction of apoptosis by ADV-VP2 was further shown by the TUNEL assay, with dark brown discoloration of apoptotic cells. The present study also explored the different stages of apoptosis by Annexin V/PI double staining flow cytometry quantification. Treated MCF-7 and MDA-MB-231 cells, respectively detected 25.58 +/- 9.02 and 14.51 +/- 3.12% of early apoptotic cells, 6.09 +/- 4.06 and 77.12 +/- 5.09% of late apoptotic cells. Results revealed that there were significant differences in the number of cells of both types which underwent early and late apoptosis. Significant differences were also observed among viable and apoptotic cells which have been post treated with ADV-VP2. The apoptotic effects of ADV-VP2 on human breast cancer cell lines were consistently demonstrated by three apoptosis detection methods. Therefore, a cancer vaccine basing on gene therapy could be developed in the near future using the present construct.


Assuntos
Adenoviridae , Apoptose , Neoplasias da Mama/metabolismo , Vacinas Anticâncer/metabolismo , Proteínas do Capsídeo/biossíntese , Transdução Genética , Neoplasias da Mama/genética , Neoplasias da Mama/patologia , Vacinas Anticâncer/genética , Proteínas do Capsídeo/genética , Linhagem Celular Tumoral , Feminino , Humanos , Vírus da Doença Infecciosa da Bursa/genética
17.
Heliyon ; 10(4): e25346, 2024 Feb 29.
Artigo em Inglês | MEDLINE | ID: mdl-38390042

RESUMO

Roadway departure (RwD) crashes are significant safety concerns, especially at horizontal curves. The design of these curves plays a crucial role in mitigating RwD crashes. Thus, a thorough understanding of the interaction between driver behavior, vehicle automation, and geometric design is vital. Substantive safety, which emphasizes the inherent safety in a road's design and function, serves as the foundation of our approach. Building on this, the study employs a safe system approach to investigate the performance of horizontal curves under both non-automated and partially automated conditions, using a reliability-based analysis focusing on Stopping Sight Distance as the primary driver demand. Factors including Perception-Brake Time and Take-Over Time for automated vehicles are examined. The analysis covers horizontal curves, characterized by their geometric design and crash data. Our findings highlight a shift in the performance of horizontal curves under automation, emphasizing the need to consider automation in roadway design within the safe system approach. This study demonstrates how a reliability-based analysis can guide designers in making informed decisions regarding the geometric design of horizontal curves to reduce RwD crashes. To enhance transportation safety in the era of increasing automation, ongoing exploration of the relationships between driver behavior, automation, and road design is indispensable.

18.
Int Med Case Rep J ; 17: 459-464, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38770520

RESUMO

Introduction: Nasopalatine duct cyst (NDC) is the most prevalent non-odontogenic cyst emerging from the epithelial remnants in the maxillary incisive canal. A sublabial or transpalatal approach is performed to enucleate NDC completely. More recently, transnasal endoscopic marsupialization has been used gradually. Case Presentation: A 24-year-old male patient with a large nasopalatine duct cyst with a diameter of 51 mm was managed by transnasal endoscopic marsupialization under general anesthesia. The presentation involves painless swelling around the left side of the anterior maxilla and bulging of the hard palate. No postoperative complications were observed after a 3-month follow-up. Transnasal endoscopic marsupialization is a minimally invasive surgery for large NDC. Clinical discussion: Approximately 1% of the population has a nasopalatine duct cyst. Surgical treatment was carried out under general anesthesia; the cyst was dissected and removed using a typically transnasal endoscopic marsupialization technique. Conclusion: The cause of the NDC is unclear. Simple surgical resection and clinical and radiological control are recommended to ensure the case is resolved correctly.

19.
Ann Med Surg (Lond) ; 86(2): 1089-1091, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38333236

RESUMO

Introduction and importance: Fahr's syndrome is primarily familial, autosomal dominant, and genetically diverse. Basal ganglia calcification that is bilaterally symmetrical is a hallmark of this illness. Although the specific origins of this illness are unknown, it may be brought on by problems with calcium metabolism, infections, toxins, hereditary factors, hypoparathyroidism, and pseudohypoparathyroidism. The prevalence of this syndrome is less than 0.5%. Case presentation: An 11-year-old female comes to the Emergency Department with her parents complaining of high-grade fever and convulsions for 1 week. Convulsion, which is a generalized tonic-clonic seizure, duration was ~5 min and associated with urinary incontinence and biting tongue. On examination, the patient was confused and irritable. Vital signs were normal; there is weakness in the right arm and right leg, associated with irregular movement. There was alternation in her level of consciousness, slurring of speech, and psychiatric symptoms. Another aspect of the neurological examination and systems was normal, and there was no meningeal irritation. Clinical discussion: The pathogenesis of Fahr's syndrome is not completely known. The calcification is caused by flaws in the transport of radioactive particles and tissue damage caused by free radicals. Bilateral calcification found on a computed tomography (CT) scan of the brain, autosomal dominant inheritance, the absence of any infection, drugs, or toxins, the absence of mitochondrial dysfunction, and the presence of progressive neurological dysfunction is the clinical criteria for diagnosing Fahr's syndrome. Conclusion: Basal ganglia calcification that is bilaterally symmetrical is a hallmark of Fahr's syndrome. CT scans are the gold standard for conclusively diagnosing Fahr's syndrome.

20.
Ther Innov Regul Sci ; 58(3): 395-403, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38285370

RESUMO

A clinical trial is any research on human subjects that involves an investigational medicinal product or device. Investigational medicinal products include unlicensed drugs or drugs used outside the product license (e.g. for a new indication) (ICH-GCP). As per the internationally accepted ICH-GCP guidelines, clinical trials should be conducted strictly per the approved protocol. However, during the lifecycle of a trial, protocol deviations may occur. Under ICH efficacy guidelines, protocol deviations are divided into non-important (minor) or important (major), and the latter can jeopardise the participant's rights, safety or the quality of data generated by the study. Existing guidelines on protocol deviation management do not detail or standardise actions to be taken for participants, investigational products, data or samples as part of a holistic management of important protocol deviations. Herein, we propose guidelines to address the current literature gap and promote the standardisation of actions to address important protocol deviations in clinical trials. The advised actions should complement the existing local institutional review board and national regulatory authority requirements.


Assuntos
Ensaios Clínicos como Assunto , Humanos , África Subsaariana , Ensaios Clínicos como Assunto/normas , Guias como Assunto , Projetos de Pesquisa/normas
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