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1.
Turk J Gastroenterol ; 34(7): 753-759, 2023 07.
Artículo en Inglés | MEDLINE | ID: mdl-37326153

RESUMEN

BACKGROUND/AIMS: The aim of this study is to evaluate the parameters that might be associated with pathologically diagnosed microvascular invasion and poor differentiation, using complete blood count and routine clinical biochemistry test results, in hepatocellular carcinoma patients before liver transplantation. MATERIALS AND METHODS: The data of patients who underwent liver transplantation for hepatocellular carcinoma at our institute, between March 2006 and November 2021, was researched retrospectively. RESULTS: The incidence of microvascular invasion was 28.6%, poor differentiation rate was 9.3%, hepatocellular carcinoma recurrence rate after liver transplantation was 12.1%, and median time to recurrence was 13 months, in the patients with normal alpha-fetoprotein levels. After univariate and multivariate analysis, maximum tumor diameter >4.5 cm and the number of nodules (n > 5) were found to be independent risk factors for microvascular invasion, and number of nodules >4 and mean platelet volume ≤8.6 fL were found to be independent risk factors for poor differentiation. Serum alpha-fetoprotein levels were still within the normal range at the recurrence time, in 53% of the patients who had recurrence after liver transplantation, but surprisingly were elevated in 47% of the patients at time of hepatocellular carcinoma recurrence. CONCLUSIONS: In hepatocellular carcinoma patients with normal alpha-fetoprotein levels before liver transplantation, independent risk factors of the presence of microvascular invasion were maximum tumor diameter and number of nodules, and independent risk factors of poor differentiation were mean platelet volume and number of nodules. Furthermore, serum alpha-fetoprotein levels were still normal at time of recurrence in 53% of hepatocellular carcinoma patients whose alpha-fetoprotein levels were normal before liver transplantation but were elevated in 47% of the patients at recurrence time, despite having normal levels before liver transplantation.


Asunto(s)
Carcinoma Hepatocelular , Neoplasias Hepáticas , Trasplante de Hígado , alfa-Fetoproteínas , Humanos , Carcinoma Hepatocelular/diagnóstico , Carcinoma Hepatocelular/patología , alfa-Fetoproteínas/análisis , Neoplasias Hepáticas/diagnóstico , Neoplasias Hepáticas/patología , Recurrencia Local de Neoplasia , Masculino , Femenino , Niño , Adolescente , Adulto Joven , Adulto , Persona de Mediana Edad , Anciano
2.
Rice (N Y) ; 15(1): 45, 2022 Aug 17.
Artículo en Inglés | MEDLINE | ID: mdl-35976520

RESUMEN

BACKGROUND: Improved Samba Mahsuri (ISM) is an elite, high-yielding, bacterial blight resistant, fine-grained rice variety with low glycaemic index. It is highly sensitive to salt stress, particularly at seedling stage, which significantly reduces its yield potential in coastal areas. A salinity tolerant QTL, Saltol, associated with seedling stage tolerance was previously mapped on chromosome 1 (10.6-11.5 Mb) from the Indian landrace, Pokkali and is effective in different genetic backgrounds. The objective of this study was to enhance salinity tolerance of ISM by incorporating the Saltol QTL through marker-assisted backcross breeding using the breeding line, FL478 (Pokkali/IR29). RESULTS: Foreground selection was carried out at each generation using five Saltol-specific markers and three bacterial blight resistance genes, Xa21, xa13 and xa5. Background selection was conducted using 66 well distributed polymorphic SSR markers and at the BC3F2 generation, a single plant with maximum recurrent parent genome recovery (95.3%) was identified and advanced to the BC3F4 generation. Based on bacterial blight resistance, seedling stage salinity tolerance and resemblance to ISM, four advanced breeding lines were selected for testing in replicated experiments near Hyderabad, India. A promising near-isogenic line, DRR Dhan 58, was evaluated in multi-location trials-coastal salinity and it showed significant salinity tolerance, resistance to bacterial blight disease, high yield and excellent grain quality during the 2019 and 2020 trials. DRR Dhan 58 was 95.1% similar to ISM based on genotyping with the 90 K SNP chip. Whole genome resequencing analysis of Pokkali and FL478 which were salinity tolerant checks, ISM and DRR Dhan 58 showed a high degree of relatedness with respect to the candidate gene loci for Saltol and OsSKC1 (Shoot K+ Concentration 1). CONCLUSION: DRR Dhan 58, possessing Saltol and three bacterial blight resistance genes (Xa21, xa13 and xa5) in the genetic background of the Indian mega-variety of rice, Samba Mahsuri, was developed for potential cultivation in areas prone to seedling stage salinity, as well as areas with endemic bacterial blight disease. This entry had a 24% yield advantage over the recurrent parent ISM under coastal saline conditions in multi-location trials and was recently released for commercial cultivation in India.

3.
Medicina (Kaunas) ; 59(1)2022 Dec 23.
Artículo en Inglés | MEDLINE | ID: mdl-36676654

RESUMEN

Background: The prognostic impact and clinicopathologic features of incidental hepatocellular carcinoma (iHCC) detected in explanted livers of patients undergoing liver transplantation (LT) has been a controversial issue in previous studies when compared with patients who are diagnosed with hepatocellular carcinoma (pdHCC) before LT. We aimed to review and compare these patient groups in a high-volume LT center. Methods: The present study involves a retrospective analysis of 406 HCC patients who received LT between January 2002 and April 2022. Among these patients, demographic data, histopathologic features and prognosis for iHCC and pdHCC were evaluated. Results: In our series, 406 patients' final diagnosis was HCC after they had received LT, nevertheless 54 patients in this HCC group were diagnosed incidentally after the pathological evaluation of the explanted livers. The etiology of the underlying liver disease between pdHCC (n = 352) and iHCC (n = 54) groups had some differences in our study population. Most of the patients in the pdHCC group had moderately differentiated tumors (45.7%). On the other hand, most of the patients in the iHCC group had well differentiated tumors (79.6%). There were 158 (44%) patients who met the Milan criteria in the pdHCC group while there were 48 (92%) patients in the iHCC group (p < 0.001). IHCC patients had statistically better 1, 3, 5 and 10 years disease-free and overall survival rates when compared with pdHCC patients. There was only 1 (1.8%) patient who had tumor recurrence in the iHCC group while 76 (21%) patients had tumor recurrence in the pdHCC group (p = 0.001). There is no disease free and overall survival difference when iHCC patients are compared with pdHCC patients who met the Milan criteria. Conclusion: It is the first study to show that iHCC patients may differ from pdHCC patients in terms of etiological features. IHCC tumors show better histopathologic features than pdHCC with low recurrence rate and iHCC patients have better survival rates than pdHCC patients.


Asunto(s)
Carcinoma Hepatocelular , Neoplasias Hepáticas , Trasplante de Hígado , Humanos , Carcinoma Hepatocelular/cirugía , Carcinoma Hepatocelular/diagnóstico , Neoplasias Hepáticas/cirugía , Neoplasias Hepáticas/diagnóstico , Recurrencia Local de Neoplasia/epidemiología , Estudios Retrospectivos , Pronóstico
4.
Urol Case Rep ; 38: 101670, 2021 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-33889499

RESUMEN

A 67-year-old male who underwent right radical nephrectomy 15 years prior to current diagnosis for pT2bN0M0 ccRCC presented with an isolated purulent ulcer on left foot. Data was collected from records, radiological scans and histological reviews. The non-healing ulcer did not respond to antibiotic therapy and surgical debridement. Biopsy and histology confirmed a ccRCC metastasis. Late cutaneous ulcer is an aggressive and rare presentation of ccRCC metastasis. Awareness of a non-healing skin ulcer on a background history of ccRCC is important in order to avoid misdiagnosis and mistreatment.

5.
Int J Clin Pract ; 75(2): e13593, 2021 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-32583494

RESUMEN

INTRODUCTION: Hepatocellular carcinoma is associated with several chronic inflammatory conditions. It is increasingly understood that the inflammation may be part of the carcinogenic process and prognostically important. OBJECTIVE: To evaluate the serum levels of three inflammation markers in relation to survival in HCC patients. METHODS: We retrospectively examined the serum levels of CRP, albumin and ESR, both singly and in combination, in relation to patient survival. RESULTS: Survival worsened with increase in CRP or ESR or decrease in albumin levels. Combinations of CRP plus albumin or CRP plus ESR were associated with an even greater range of survival (3-fold), together with significant differences in maximum tumor diameter (PVT) and percent of patients with portal vein thrombosis (PVT). The triplet of CRP plus albumin plus ESR was associated with a sevenfold difference in survival, comparing low vs high parameter levels. These significant differences were found in patients with small or large tumors. CONCLUSIONS: Combinations of CRP with albumin or ESR or all three parameters together significantly related to differences in survival and to differences in MTD and percent PVT, in patients with both small and large size HCCs.


Asunto(s)
Carcinoma Hepatocelular , Neoplasias Hepáticas , Albúminas , Biomarcadores , Proteína C-Reactiva , Humanos , Estudios Retrospectivos
6.
Sci Rep ; 10(1): 21143, 2020 12 03.
Artículo en Inglés | MEDLINE | ID: mdl-33273616

RESUMEN

Improved-Samba-Mahsuri (ISM), a high-yielding, popular bacterial blight resistant (possessing Xa21, xa13, and xa5), fine-grain type, low glycemic index rice variety is highly sensitive to low soil phosphorus (P). We have deployed marker-assisted backcross breeding (MABB) approach for targeted transfer of Pup1, a major QTL associated with low soil P tolerance, using Swarna as a donor. A new co-dominant marker, K20-1-1, which is specific for Pup1 was designed and used for foreground selection along with functional markers specific for the bacterial blight resistance genes, Xa21, xa13, and xa5. A set of 66 polymorphic SSR marker were used for the background selection along with a pair of flanking markers for the recombination selection in backcross derived progenies and in BC2F2 generation, 12 plants, which are homozygous for Pup1, all the three bacterial blight resistance genes and possessing agro-morphological traits equivalent to or better than ISM were selected and selfed to produce BC2F3s. They were evaluated in plots with low soil P and normal soil P at ICAR-IIRR, Hyderabad for their low soil P tolerance, and bacterial blight resistance and superior lines were advanced to BC2F6. One of the lines, when tested at multiple locations in India was found promising under both normal as well as low soil P conditions.


Asunto(s)
Adaptación Fisiológica , Bacterias/patogenicidad , Productos Agrícolas/fisiología , Marcadores Genéticos/genética , Oryza/fisiología , Fósforo/farmacología , Suelo/química , Productos Agrícolas/genética , Productos Agrícolas/microbiología , Genes de Plantas , India , Oryza/genética , Oryza/microbiología , Sitios de Carácter Cuantitativo
7.
Sci Rep ; 10(1): 13695, 2020 08 13.
Artículo en Inglés | MEDLINE | ID: mdl-32792551

RESUMEN

The study was undertaken to identify the quantitative trait loci (QTLs) governing yield and its related traits using a recombinant inbred line (RIL) population derived from the popular rice hybrid, KRH-2 (IR58025A/KMR3R). A genetic map spanning 294.2 cM was constructed with 126 simple sequence repeats (SSR) loci uniformly distributed across the rice genome. QTL analysis using phenotyping and genotyping information identified a total of 22 QTLs. Of these, five major effect QTLs were identified for the following traits: total grain yield/plant (qYLD3-1), panicle weight (qPW3-1), plant height (qPH12-1), flag leaf width (qFLW4-1) and panicle length (qPL3-1), explaining 20.23-22.76% of the phenotypic variance with LOD scores range of 6.5-10.59. Few genomic regions controlling several traits (QTL hotspot) were identified on chromosome 3 for total grain yield/plant (qYLD3-1) and panicle length (qPL3-1). Significant epistatic interactions were also observed for total grain yield per plant (YLD) and panicle length (PL). While most of these QTLs were observed to be co-localized with the previously reported QTL regions, a novel, major QTL associated with panicle length (qPL3-1) was also identified. SNP genotyping of selected high and low yielding RILs and their QTL mapping with 1,082 SNPs validated most of the QTLs identified through SSR genotyping. This facilitated the identification of novel major effect QTLs with much better resolution and precision. In-silico analysis of novel QTLs revealed the biological functions of the putative candidate gene (s) associated with selected traits. Most of the high-yielding RILs possessing the major yield related QTLs were identified to be complete restorers, indicating their possible utilization in development of superior rice hybrids.


Asunto(s)
Mapeo Cromosómico/métodos , Oryza/crecimiento & desarrollo , Sitios de Carácter Cuantitativo , Cromosomas de las Plantas/genética , Simulación por Computador , Epistasis Genética , Ligamiento Genético , Endogamia , Repeticiones de Microsatélite , Oryza/genética , Polimorfismo de Nucleótido Simple
8.
Liver Int ; 40(1): 155-162, 2020 01.
Artículo en Inglés | MEDLINE | ID: mdl-31568639

RESUMEN

BACKGROUND: Wilson's disease is a rare cause of acute liver failure and is highly fatal without liver transplantation. Fast and accurate diagnostic methods are needed for fulminant Wilson's disease (FWD). In this study, we aimed to develop an early, simple and accurate diagnostic method to differentiate FWD from nonwilsonian acute liver failure (NWALF) causes using routine biochemical data. METHODS: The medical records of 24 paediatric FWD and 120 paediatric NWALF cases diagnosed at the Department of Pediatric Gastroenterology, Hepatology, and Nutrition between January 2007 and February 2017 were retrospectively reviewed. RESULTS: Using receiver operator characteristics curve (ROC) analysis, we have determined the best cut-off point for laboratory findings in FWD. Patients meeting these cut-off points were assigned one point and others were assigned zero point. We then formed a new variable consisting of the combination of 14 variables and performed a new ROC analysis. We obtained a cut-off point of ≥4.5 for FWD. The diagnostic performance of the score was characterized by a sensitivity of 0.889, a specificity of 0.879 (P < .001). A scoring system based only on aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase, AST/ALT ratio, uric acid and haemoglobin had a best cut-off point of ≥2.5 for FWD, which had a sensitivity of 0.875, a specificity of 0.867 (P < .001). CONCLUSIONS: Our study demonstrated that biochemical markers offer almost as reliable, fast and accurate diagnosis of FWD as offered by ceruloplasmin and 24-hour urinary copper.


Asunto(s)
Degeneración Hepatolenticular/diagnóstico , Fallo Hepático Agudo/diagnóstico , Adolescente , Alanina Transaminasa/sangre , Fosfatasa Alcalina/sangre , Aspartato Aminotransferasas/sangre , Bilirrubina/sangre , Ceruloplasmina/metabolismo , Niño , Preescolar , Cobre/sangre , Cobre/metabolismo , Diagnóstico Diferencial , Femenino , Degeneración Hepatolenticular/sangre , Humanos , Lactante , Hígado/metabolismo , Fallo Hepático Agudo/sangre , Masculino , Estudios Retrospectivos
9.
Gen Physiol Biophys ; 38(1): 73-82, 2019 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-30657462

RESUMEN

The objective of the present study was to demonstrate the protective effect of crocin on the adverse effects of tartrazine on liver. Crocin is a carotenoid and a strong free radical scavenger. Forty rats were randomly divided into 4 groups (n = 10). The first group was the control group (C) and saline solution was administered to this group. The second group (Cr) was administered 50 mg/kg crocin. The third group (T) was administered 500 mg/kg tartrazine. The fourth group (T+Cr) was administered the same doses of both crocin and tartrazine as the previous groups for 21 days. It was determined that tartrazine increased liver superoxide dismutase (SOD) activity, malondialdehyde (MDA) and total oxidant status (TOS) levels and catalase (CAT) activity, decreased glutathione (GSH), and total antioxidant status (TAS) levels. Furthermore, tartrazine administration resulted in significant increases in plasma aspartate aminotransferase (AST), alanine aminotransferase (ALT) and alkaline phosphatase (ALP) activities and pathological changes in the liver. When tartrazine administered rats were treated with crocin for 21 days, the biochemical parameters improved, and liver tissues were restored. Thus, it was demonstrated that crocin had protective effects on the adverse effects caused by tartrazine administration.


Asunto(s)
Carotenoides/farmacología , Enfermedad Hepática Inducida por Sustancias y Drogas/prevención & control , Colorantes de Alimentos , Hígado/efectos de los fármacos , Tartrazina , Animales , Antioxidantes/análisis , Antioxidantes/metabolismo , Biomarcadores/análisis , Biomarcadores/metabolismo , Enfermedad Hepática Inducida por Sustancias y Drogas/patología , Hígado/metabolismo , Hígado/patología , Estrés Oxidativo/efectos de los fármacos , Distribución Aleatoria , Ratas
10.
Gen Physiol Biophys ; 37(4): 399-409, 2018 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-30220678

RESUMEN

Saffron is used in traditional medicine for its hypolipidemic, anti-inflammatory and anti-carcinogenic properties as a natural remedy in treatment of diseases. The objective of the present study was to demonstrate the protective effect of crocin (one of the main ingredients of saffron) on carbon tetrachloride (CCl4) damage in intestinal mucosa. MDA, GSH, SOD, CAT, TAS and TOS levels were measured in experimental animal tissue samples and these were compared with histologic lesions induced by CCl4. CCl4 caused an increase in MDA, SOD, CAT and TOS levels and a significant decrease in GSH and TAS levels in rat intestinal tracts. After crocin treatment, serious improvements were observed in histological lesions and biochemical results in the intestinal tract. In conclusion, crocin inhibited the toxic effects induced by CCl4 in the intestine by its strong antioxidant properties.


Asunto(s)
Tetracloruro de Carbono/toxicidad , Carotenoides/farmacología , Mucosa Intestinal/metabolismo , Intestinos/efectos de los fármacos , Estrés Oxidativo/efectos de los fármacos , Animales , Antioxidantes/metabolismo , Citoprotección/efectos de los fármacos , Masculino , Ratas , Ratas Wistar , Especies Reactivas de Oxígeno/metabolismo
11.
J Genet ; 95(4): 895-903, 2016 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-27994188

RESUMEN

This study was carried out to improve the RPHR-1005, a stable restorer line of the popular medium slender grain type rice hybrid, DRRH-3 for bacterial blight (BB) and blast resistance through marker-assisted backcross breeding (MABB). Two major BB resistance genes, Xa21 and Xa33 and a major blast resistance gene, Pi2 were transferred to RPHR-1005 as two individual crosses. Foreground selection for Xa21, Xa33, Pi2, Rf3 and Rf4 was done by using gene-specific functional markers, while 59 simple sequence repeat (SSR) markers polymorphic between the donors and recipient parents were used to select the best plant possessing target resistance genes at each backcross generation. Backcrossing was continued till BC2F2 and a promising homozygous backcross derived line possessing Xa21+ Pi2 and another possessing Xa33 were intercrossed to stack the target resistance genes into the genetic background of RPHR-1005. At ICF4, 10 promising lines possessing three resistance genes in homozygous condition along with fine-grain type, complete fertility restoration, better panicle exertion and taller plant type (compared to RPHR-1005) were identified.


Asunto(s)
Bacterias , Resistencia a la Enfermedad/genética , Marcadores Genéticos , Oryza/genética , Enfermedades de las Plantas/genética , Enfermedades de las Plantas/microbiología , Cruzamiento , Genes de Plantas , Genotipo , Hibridación Genética , Repeticiones de Microsatélite , Fenotipo , Selección Genética
12.
Front Plant Sci ; 7: 1195, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27555861

RESUMEN

RPHR-1005, the stable restorer line of the popular medium slender (MS) grain type rice hybrid, DRRH-3 was improved in this study for resistance against bacterial blight (BB) and blast diseases through marker-assisted backcross breeding (MABB). In this study, four major resistance genes (i.e., Xa21 and Xa33 for BB resistance and Pi2 and Pi54 for blast resistance) have been transferred to RPHR-1005 using RPBio Patho-1 (possessing Xa21 + Pi2), RPBio Patho-2 (possessing Xa21 + Pi54) and FBR1-15EM (possessing Xa33) as the donors. Foreground selection was carried out using PCR-based molecular markers specific for the target resistance genes and the major fertility restorer genes, Rf3 and Rf4, while background selection was carried out using a set of parental polymorphic rice SSR markers and backcrossing was continued uptoBC2 generation. At BC2F2, plants possessing the gene combination- Xa21 + Pi2, Xa21 + Pi54 and Xa33 in homozygous condition and with >92% recovery of the recurrent parent genome (RPG) were identified and intercrossed to combine all the four resistance genes. Twenty-two homozygous, pyramid lines of RPHR-1005 comprising of three single-gene containing lines, six 2-gene containing lines, eight 3-gene containing lines, and five 4-gene containing lines were identified among the double intercross lines at F3 generation (DICF3). They were then evaluated for their resistance against BB and blast, fertility restoration ability and for key agro-morphological traits. While single gene containing lines were resistant to either BB or blast, the 2-gene, 3-gene, and 4-gene pyramid lines showed good level of resistance against both and/or either of the two diseases. Most of the 2-gene, 3-gene, and 4-gene containing pyramid lines showed yield levels and other key agro-morphological and grain quality traits comparable to the original recurrent parent and showed complete fertility restoration ability, with a few showing higher yield as compared to RPHR-1005. Further, the experimental hybrids derived by crossing the gene-pyramid lines of RPHR-1005 with APMS6A (the female parent of DRRH-3), showed heterosis levels equivalent to or higher than DRRH-3. The results of present study exemplify the utility of MABB for targeted improvement of multiple traits in hybrid rice.

13.
Gen Physiol Biophys ; 35(1): 87-94, 2016 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-26001290

RESUMEN

Physical exercise could cause muscle and tissue damage due to increase in the formation of free oxygen radicals during exercise. The aim of the present study was to investigate the effect of crocin on parameters associated with oxidative stress in recovery from acute swimming exercise in rats. Rats were divided into eight groups; Normal Control (NC: untreated and did not swim), Crocin Control (CC: received crocin and did not swim), Exercise-1 (Exe-1: untreated and swam), Exercise-24 (Exe-24: untreated and swam), Exercise-48 (Exe-48: untreated and swam), Exercise+Crocin-1 (Exe-Cro-1: received crocin and swam), Exercise+Crocin-24 (Exe-Cro-24: received crocin and swam), Exercise+Crocin-48 (Exe-Cro-48: received crocin and swam). AST, ALP, LDH, CK, XO enzymes levels increased after swimming in untreated and crocin-treated groups, but there was a less increase in crocin-treated groups. The highest MDA levels in serum were determined in Exe-1 compared with all other groups. There was significant difference between control and exercise groups in MDA level (p = 0.033). In contrast, there was significant difference between control and exercise groups in GSH level (p < 0.001). In addition, crocin given to swimming rats significantly increased GSH levels (p < 0.05) and decreased MDA levels when compared with untreated exercise groups. In conclusion, crocin is able to protect liver and skeletal muscle tissue against exercise-induced oxidative damage by preventing reactive oxygen species (ROS) production.


Asunto(s)
Carotenoides/farmacología , Estrés Oxidativo/fisiología , Esfuerzo Físico/fisiología , Especies Reactivas de Oxígeno/sangre , Recuperación de la Función/fisiología , Natación/fisiología , Animales , Antioxidantes/farmacología , Femenino , Estrés Oxidativo/efectos de los fármacos , Condicionamiento Físico Animal/métodos , Ratas , Ratas Wistar , Recuperación de la Función/efectos de los fármacos , Resultado del Tratamiento
14.
J Phys Chem B ; 114(49): 16548-57, 2010 Dec 16.
Artículo en Inglés | MEDLINE | ID: mdl-21086967

RESUMEN

Sac7d belongs to a family of chromosomal proteins, which are crucial for thermal stabilization of DNA at higher growth temperatures. It is capable of binding DNA nonspecifically, and is responsible for the increase in the melting temperature of DNA in the bound form up to 85 °C. Molecular dynamics (MD) simulations were performed at different temperatures on two protein-DNA complexes of Sac7d. Various structural and energetic parameters were calculated to examine the DNA stability and to investigate the conformational changes in DNA and the protein-DNA interactions. Room temperature simulations indicated very good agreement with the experimental structures. The protein structure is nearly unchanged at both 300 and 360 K, and only up to five base pairs of the DNA are stabilized by Sac7d at 360 K. However, the MD simulations on DNA alone systems show that they lose their helical structures at 360 K further supporting the role of Sac7d in stabilizing the oligomers. At higher temperatures (420 and 480 K), DNA undergoes denaturation in the presence and the absence of the protein. The DNA molecules were found to undergo B- to A-form transitions consistent with experimental studies, and the extent of these transitions are examined in detail. The extent of sampling B- and A-form regions was found to show temperature and sequence dependence. Multiple MD simulations yielded similar results validating the proposed model. Interaction energy calculations corresponding to protein-DNA binding indicates major contribution due to DNA backbone, explaining the nonspecific interactions of Sac7d.


Asunto(s)
Proteínas Arqueales/química , Proteínas de Unión al ADN/química , ADN/química , Simulación de Dinámica Molecular , Inestabilidad Cromosómica , Cristalografía por Rayos X , Modelos Moleculares , Unión Proteica , Temperatura
15.
J Gynecol Obstet Biol Reprod (Paris) ; 39(2): 159-62, 2010 Apr.
Artículo en Francés | MEDLINE | ID: mdl-20144512

RESUMEN

With an incidence of 5% in the female population, genital malformations are a frequent clinical occurrence presented by Oppelt et al. (2007) [1]. First, we have to diagnostic them and search for extra genital malformation when it is necessary. Think about maturity-onset-diabetes-of-the young 5 (MODY-5) when there's a personnel or family story of diabetes. This is often within the competence of the diabetologist and our speciality can be put in contribution in the research for the associated genital malformation. We report on the case of a young woman age of 19 with diabetes diagnosed during her adolescence, a nephropathy with polycystic kidneys, biological cytolysis, a bicornuate unicervical uterus while this may be a clinical diabetes MODY-5 confirmed by the discovery of the complete deletion of the gene coding for HNF-1 beta in the heterozygous state.


Asunto(s)
Diabetes Mellitus Tipo 2/complicaciones , Enfermedades Renales Poliquísticas/complicaciones , Útero/anomalías , Adulto , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Diabetes Mellitus Tipo 2/genética , Femenino , Eliminación de Gen , Factor Nuclear 1-beta del Hepatocito/genética , Heterocigoto , Humanos , Hiperandrogenismo/complicaciones , Insulina/uso terapéutico , Enfermedades Renales Poliquísticas/genética
16.
Artículo en Inglés | MEDLINE | ID: mdl-17709073

RESUMEN

OBJECTIVE: The purpose of this study was to evaluate the effect of single and combined use of ethylenediamine tetra acetic acid (EDTA), ethylene glycol bis [b-aminoethylether] N,N,N',N'-tetraacetic acid (EGTA), EDTA plus Cetavlon (EDTAC), tetracycline-HCl, and NaOCl on the microhardness of root canal dentin. STUDY DESIGN: The crowns of 30 single-rooted human teeth were discarded at the cementoenamel junction and the roots were bisected longitudinally to obtain root halves (N = 60). The specimens were embedded in autopolymerizing acrylic resin, leaving the root canal dentin exposed. Dentin surfaces were prepared for microhardness test by grinding and polishing. The reference microhardness values of untreated specimens were recorded using a Vicker's microhardness tester at the apical, midroot, and cervical levels of the root canal. Thereafter, the specimens treated with single (test solution only) or combined (test solution, followed by 2.5% NaOCl) versions of the irrigants for 5 minutes. Posttreatment microhardness values were obtained as with initial ones. Statistical comparisons between the test groups and among single and combined treatments were carried out using 2-way ANOVA with repeated measures (P =.05). Comparisons within each group with respect to application regions were made with Friedman's nonparametric 2-way analysis of variance at the same level of significance. RESULTS: All treatment regimens except distilled water significantly decreased the microhardness of the root canal dentin (P < . 05). The single and combined use of EDTA decreased the microhardness of the root canal dentin significantly more than all other treatment regimens (P < .05). Compared with their single-treatment versions, all combined treatment regimens decreased the mean microhardness values significantly (P < .05). A comparison of single and combined treatment regimens revealed significant decreases only for EDTA and EDTA + NaOCl in the coronal region and for EDTAC and EDTAC + NaOCl in the apical and middle regions of the root canal (P < .05). CONCLUSIONS: The use of EDTA alone or prior to NaOCl resulted in the maximum decrease in dentin microhardness. The softening effect of subsequent NaOCl treatment was both material and region dependent. However, for combined treatment regimens, subsequent use of NaOCl levels the statistical differences between the regional microhardness values obtained after treatment with EGTA, EDTAC, and tetracycline-HCl.


Asunto(s)
Cavidad Pulpar/efectos de los fármacos , Ácido Edético/análogos & derivados , Ácido Edético/farmacología , Ácido Egtácico/farmacología , Irrigantes del Conducto Radicular/farmacología , Análisis de Varianza , Cavidad Pulpar/química , Dentina/química , Dentina/efectos de los fármacos , Quimioterapia Combinada , Dureza/efectos de los fármacos , Humanos , Hipoclorito de Sodio/farmacología , Estadísticas no Paramétricas , Tetraciclina/farmacología
17.
Gynecol Obstet Fertil ; 34(6): 510-3, 2006 Jun.
Artículo en Francés | MEDLINE | ID: mdl-16697688

RESUMEN

Abnormalities of the reproductive tract interest a little more than 1% of the women. The symptoms are not specific: abdominal pain seems like appendicitis, invalidating dysmenorrheas in the girl, urinary manifestations. They should be discovered and treated because they could bring about obstetric complications later. We present three observations, illustrated with a recent review of the literature, and describe the diagnostic difficulties and their surgical treatments.


Asunto(s)
Hematocolpos/etiología , Vagina/anomalías , Dolor Abdominal , Adulto , Niño , Dismenorrea , Femenino , Hematocolpos/diagnóstico , Hematocolpos/cirugía , Humanos , Ultrasonografía , Vagina/diagnóstico por imagen , Vagina/cirugía
18.
J Gynecol Obstet Biol Reprod (Paris) ; 33(3): 192-4, 2004 May.
Artículo en Francés | MEDLINE | ID: mdl-15170433

RESUMEN

Primary ciliary dyskinesia is a rare etiology of sterility in man (prevalence between 1/6000 and 1/40000). Kartagener's syndrome is an autosomal recessive disorder, characterized by total or partial dysfunction of the ciliary or flagellated cells. This syndrome associates situs inversus, sinusitis, bronchiectasis and occasionally sterility in males. We report a case of immotile cilia syndrome with male infertility and compare the data with four other couples reported in the literature (two couples in Germany, two in the United States). The difficulty is to select an alive sperm cell for ICSI.


Asunto(s)
Infertilidad Masculina/etiología , Síndrome de Kartagener/diagnóstico , Síndrome de Kartagener/terapia , Adulto , Bronquiectasia/complicaciones , Femenino , Humanos , Infertilidad Masculina/terapia , Síndrome de Kartagener/complicaciones , Masculino , Embarazo , Sinusitis/complicaciones , Situs Inversus/complicaciones , Inyecciones de Esperma Intracitoplasmáticas , Motilidad Espermática
19.
Gynecol Obstet Fertil ; 30(6): 474-82, 2002 Jun.
Artículo en Francés | MEDLINE | ID: mdl-12146148

RESUMEN

UNLABELLED: Hysterectomy is one of the most common operations done throughout the world. Patients' concerns about sexual functioning after hysterectomy is great. OBJECTIVE: We wanted to evaluate, through a local investigation based on a questionnaire, the psychosexual impact of this operation and to compare our data to those available in the literature. PATIENTS AND METHODS: 534 patients operated between of 01.01.1997 and 31.12.1997 for a benign uterine pathology (prolapse excluded) were included. Questions were about sexual and psychological functioning after hysterectomy. The main outcome measures were changes in the sexual life, sexual desire, orgasm, dyspareunia, frequency of sexual relations. Abdominal and vaginal surgical approaches were compared for some items when possible. RESULTS: After the operation, 83.3% of the patients felt better, 30.4% of the patients mentioned changes in their sexual life, 32% of low libido rates was noticed (and there was a significant difference between abdominal and vaginal surgical approaches), 27.6% of the patients had less frequent orgasm and only 8.8% experienced orgasm more frequently, 15% suffer from dyspareunia, and 15% were more engaged in sexual intercourse. CONCLUSION: Psychosexual impact of hysterectomy is limited and is not more frequent when vaginal surgery is performed, but pre- and post-operative prevention can be useful.


Asunto(s)
Histerectomía/efectos adversos , Histerectomía/psicología , Conducta Sexual , Adulto , Depresión/etiología , Dispareunia/etiología , Femenino , Humanos , Libido , Orgasmo , Estudios Retrospectivos , Conducta Sexual/fisiología , Conducta Sexual/psicología , Encuestas y Cuestionarios , Salud de la Mujer
20.
Contracept Fertil Sex ; 26(5): 356-62, 1998 May.
Artículo en Francés | MEDLINE | ID: mdl-9648379

RESUMEN

Delivery of viable fetus with a long interval delay is an unusual occurrence. There is no clear attitude among obstetricians for such cases. We report a case of retention of the second and the third triplet after the delivery of the first one at 24 weeks of amenorrhea and 3 days. The duration of the retention was 6 days. Only the third infant survived. We attempt to outline the difficulties in managing such pregnancies.


Asunto(s)
Parto Obstétrico/métodos , Resultado del Embarazo , Embarazo Múltiple , Femenino , Muerte Fetal , Edad Gestacional , Humanos , Embarazo , Factores de Tiempo
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