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1.
Niger J Clin Pract ; 25(10): 1704-1709, 2022 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-36308243

RESUMEN

Background: Evaluation of circumcision bleeding cannot depend on the visual change in the diaper. Diapers have different product features and absorbency capacities. The apparent changes in the diapers may vary according to their absorbent capacity and may not be in parallel with the amount of bleeding. Before significant visual difference occurs, the patient's hemodynamics may be impaired. Aim: Aim of the study is to evaluate better circumcision bleeding. Patients and Methods: Patients were divided into groups according to 12 different brand diapers of the same size, containing super-absorbent material. The study started by 15/01/2022, and finished by end of 01/03/2022. Diapers with concealed brands were soaked with blood with equal hematocrit value in 100 ml with increments of 5 ml. 252 images were obtained by taking 21 images of each diaper with the same method. The diapers were evaluated colorimetrically, and numerical values were obtained showing the color differences in red, green, and blue and saturation and lightness. Working groups were formed according to 12 different brands of diapers of the same size, containing super-absorbent material. Standard statistical tests were performed using obtained values. Result: : Dry diapers had different weights, volumes, and specific gravities; the diapers with the lowest unit weight were ranked ninth in terms of volume; the diapers with the highest specific gravity were ranked third in terms of thinness. There were significant differences in the blood on the diaper, and significant differences between some groups (p < 0.005); on the other hand, there was not any difference between some other groups (p > 0.05). There was a significant relationship in terms of Analysis of Variance (ANOVA) (P < 0.05 and P < 0.01). Visual graphic examination showed that linear but non-parallel color changes occurred. As the blood load increased, the visual and statistical differences between the diapers became more pronounced, and the curves diverged. Conclusion: Visual evaluation of the color change of the diapers may not give accurate results for bleeding follow-up. If necessary to use diapers after circumcision, it is more appropriate to prefer those with low absorbency capacity. Using fabric or cotton products in cases with bleeding risk may be recommended. If bleeding is suspected, hemogram control is the most appropriate option. Diaper manufacturers should warn consumers of the risk. In conclusion, we should be on the safe side for mortality and morbidity.


Asunto(s)
Dermatitis del Pañal , Lactante , Masculino , Niño , Humanos , Cuidado del Lactante , Hemorragia/etiología
2.
Niger J Clin Pract ; 25(11): 1792-1798, 2022 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-36412284

RESUMEN

Background: One of the restricting factors for surgical treatment of congenital anatomical pathologies of the penis is the skin structure. Thanks to its structure, the penis is a flexible organ structure, and the treatment can be completed without the need for a free tissue graft. Length changes are obtained on the ventral side of the penis by frenuloplasty. Aims: Our study aims to attain an objective formula that could noninvasively predict these changes on the ventral side before the procedure. Patients and Methods: In our study, 52 patients who were admitted for routine religious circumcision were included, and penile ventral and dorsal skin and inner mucosa lengths were measured before and after frenuloplasty, which is a part of the normal routine circumcision procedure and performed via the "pull and burn" method. Stitches were done to prevent scar formation in the frenuloplasty area. The results were used to estimate the length changes to be obtained on the ventral side by performing a regression analysis of the patient's weight, height, ventral and dorsal inner mucosa, and outer skin lengths. Result: Following frenuloplasty, an increase was detected in the ventral surface ranging from 20% to 177%. This increase was found to be predictable with 62.5% precision (P < 0.01) using the formulation established by assessing the ventral inner mucosa length from pre-procedure values. No significant result was determined in the regression analysis of the patients' other measurements (P > 0.05). Conclusion: Penile length changes that would occur following frenuloplasty can be calculated using a noninvasive method. Frenuloplasty, which would be performed without any vascular change, could be helpful in the surgical planning of some penile surgeries. More studies should be conducted on older boys, in anatomic deviations, and moreover, to establish a reliable formulation.


Asunto(s)
Circuncisión Masculina , Masculino , Humanos , Pene/cirugía , Piel , Cicatriz , Pruebas de Coagulación Sanguínea
3.
Niger J Clin Pract ; 25(5): 670-676, 2022 May.
Artículo en Inglés | MEDLINE | ID: mdl-35593611

RESUMEN

Background: Irrigant activation techniques, which are more effective in anatomically complex areas, can be used to maximize irrigant efficacy. Aim: This in vitro study aimed to evaluate the efficacy of different agitation techniques on the dislocation resistance of Biodentine to the root canal dentin. Materials and Methods: Seventy single-rooted teeth divided into seven experimental groups (n = 10); Group I-Irritrol/Photon-induced-photoacoustic-streaming (PIPS), Group II-Irritrol/EDDY®, Group III- Irritrol/Syringe-needle-irrigation (SNI), Group IV-Chlorhexidine-gluconate (CHX)/PIPS, Group V-CHX/EDDY®, Group VI-CHX/SNI, Group VII-Saline. The midroot dentin slice was obtained from each tooth, and Biodentine was condensed with hand pluggers into the root canal lumen. The push-out bond strength values were measured using a universal testing machine. Each sample was categorized into one of the three failure modes: adhesive/cohesive/mixed. Scanning-Electron-Microscopy (SEM) was used to conduct the analyses, and the composition of Biodentine was analyzed using Energy-Dispersive Spectroscopy. The One-way ANOVA, post-hoc Tukey's test, and the Chi-square test were used for statistical analysis. Results: The push-out bond strength values of Biodentine showed that Group VII-Saline had a statistically significant difference (P = 0.002), however, the differences between the other groups were not statistically significant (P = 0.922). The percentages of the failure modes of the samples showed that there was a higher rate of mixed failure except for Group VII-Saline. SEM examination showed that Group VII-Saline had no open dentinal tubules, whereas the other groups, particularly the Irritrol groups, had open dentinal tubule areas. Conclusions: Within the scope of the study, using Irritrol or CHX as the final irrigation in the root canal treatment did not result in differences in the dislocation resistance of Biodentine to root canal dentin when PIPS and EDDY® were used.


Asunto(s)
Clorhexidina , Recubrimiento Dental Adhesivo , Compuestos de Calcio , Clorhexidina/química , Clorhexidina/farmacología , Cavidad Pulpar , Dentina , Humanos , Irrigantes del Conducto Radicular/química , Irrigantes del Conducto Radicular/farmacología , Preparación del Conducto Radicular , Silicatos , Análisis Espectral
4.
Int J Dent Hyg ; 12(2): 108-14, 2014 May.
Artículo en Inglés | MEDLINE | ID: mdl-23773519

RESUMEN

OBJECTIVES: To evaluate the safety and effectiveness of the plasma pencil (PP) device in conjunction with H2 O2 gel. The purpose of this study was to determine whether LTAPP delivered using the PP would enhance the tooth-whitening process while causing no thermal threat. METHODS: The study consisted of thirty extracted human teeth that were randomized into two groups: Group I received LTAPP plus 36% H2 O2 gel at 10, 15 and 20 min and Group II received 36% H2 O2 gel only at the same time intervals. Tooth surface temperature was measured periodically throughout the experiment using a non-contact thermometer. Digital photographs were taken pre- and post-treatment and transferred to Adobe Photoshop for comparison, using the CIELAB Color Value System. Only L* (lightness) values were evaluated in this study. Data were analysed using descriptive statistics and t-test at the 0.05 level. RESULTS: The results revealed a statistically significant difference in mean CIE L* values after exposure to LTAPP plus 36% H2 O2 gel, compared with 36% H2 O2 only, in the 10- and 20-min groups (P = 0.0003 and 0.0103, respectively). The temperature in both treatment groups remained under 80°F throughout the study, which is below the thermal threat for vital tooth bleaching. CONCLUSION: Utilizing PP device in conjunction with 36% H2 O2 safely accelerates and enhances the tooth-whitening process.


Asunto(s)
Peróxido de Hidrógeno/uso terapéutico , Gases em Plasma/uso terapéutico , Blanqueadores Dentales/uso terapéutico , Blanqueamiento de Dientes/métodos , Color , Humanos , Procesamiento de Imagen Asistido por Computador/métodos , Fotograbar/métodos , Gases em Plasma/administración & dosificación , Seguridad , Temperatura , Termómetros , Factores de Tiempo , Blanqueamiento de Dientes/instrumentación , Corona del Diente/anatomía & histología , Corona del Diente/efectos de los fármacos , Resultado del Tratamiento
5.
Cell Death Dis ; 14(5): 314, 2023 05 09.
Artículo en Inglés | MEDLINE | ID: mdl-37160873

RESUMEN

Melanomas are characterised by accelerated cell proliferation and metabolic reprogramming resulting from the contemporary dysregulation of the MAPK pathway, glycolysis and the tricarboxylic acid (TCA) cycle. Here, we suggest that the oncogenic transcription factor EB (TFEB), a key regulator of lysosomal biogenesis and function, controls melanoma tumour growth through a transcriptional programme targeting ERK1/2 activity and glucose, glutamine and cholesterol metabolism. Mechanistically, TFEB binds and negatively regulates the promoter of DUSP-1, which dephosphorylates ERK1/2. In melanoma cells, TFEB silencing correlates with ERK1/2 dephosphorylation at the activation-related p-Thr185 and p-Tyr187 residues. The decreased ERK1/2 activity synergises with TFEB control of CDK4 expression, resulting in cell proliferation blockade. Simultaneously, TFEB rewires metabolism, influencing glycolysis, glucose and glutamine uptake, and cholesterol synthesis. In TFEB-silenced melanoma cells, cholesterol synthesis is impaired, and the uptake of glucose and glutamine is inhibited, leading to a reduction in glycolysis, glutaminolysis and oxidative phosphorylation. Moreover, the reduction in TFEB level induces reverses TCA cycle, leading to fatty acid production. A syngeneic BRAFV600E melanoma model recapitulated the in vitro study results, showing that TFEB silencing sustains the reduction in tumour growth, increase in DUSP-1 level and inhibition of ERK1/2 action, suggesting a pivotal role for TFEB in maintaining proliferative melanoma cell behaviour and the operational metabolic pathways necessary for meeting the high energy demands of melanoma cells.


Asunto(s)
Glutamina , Melanoma , Humanos , División Celular , Ciclo Celular , Melanoma/genética , Colesterol , Factores de Transcripción Básicos con Cremalleras de Leucinas y Motivos Hélice-Asa-Hélice/genética
6.
Int Endod J ; 44(5): 407-15, 2011 May.
Artículo en Inglés | MEDLINE | ID: mdl-21219366

RESUMEN

AIM: To compare mean cusp movement in molar teeth with endodontic access and mesial-occlusal-distal (MOD) cavities before and after restoration with several fibre-reinforced composite restoration techniques under loading and to evaluate the effect of restoration technique on fracture strength. METHODOLOGY: Reference points were marked at the mesial cusp ridges of extracted human mandibular molar teeth. Digital images were taken under loading (300 N) using a stereomicroscope (Leica MZ16A; Wetzlar, Germany). Three-dimensional (3D) distances between the reference points were recorded (Leica, Stereo-Explorer, 2.1) as controls. Standard MOD cavities were prepared and restored as follows (n = 10), group 1: composite restoration (Clearfil AP-X; Kuraray, Tokyo, Japan); group 2: cavity lined with polyethylene fibre (Ribbond, Ribbond Inc., Seattle, WA, USA) in combination with flowable resin (Protect-Liner F; Kuraray, Tokyo, Japan) before composite restoration; group 3: polyethylene fibre inserted on occlusal surface of the tooth from buccal to lingual after finishing the composite restoration; group 4: missing walls were restored with composite resin and inner surfaces of the axial walls were then reinforced with polyethylene fibre placed circumferentially before the composite restoration. The restored teeth were re-loaded, digital images were re-taken and the 3D distance between the reference points was recorded in µm. Comparisons of the restoration techniques, the effectiveness of restoration for each group were analysed statistically (Kruskall-Wallis, paired-samples t-test). The teeth were then loaded until failure (5 mm min(-1) ), the data were recorded (N) and analysed statistically (Kruskall-Wallis test). RESULTS: A significant difference occurred amongst the groups in terms of cusp movement (P = 0.018). All the groups revealed a decrease in inter-cuspal width when compared to their initial records. The mean values of these decreases were as follows: group 1 17.6 (P = 0.003), group 2 6.7 (not sig), group 3 6.6 (not sig) and group 4 0.85 (not sig) µm. No significant difference was found amongst the fracture strength values (P = 0.22). In group 1, 90% of the fractures were non-restorable, whereas in group 3 100% of the fractures were restorable. CONCLUSIONS: Regardless of restoration technique, fibre reinforcement of composite restorations decreased cusp movement in molar teeth with MOD and endodontic access cavities but did not affect fracture strength.


Asunto(s)
Resinas Compuestas/uso terapéutico , Caries Dental/terapia , Fracaso de la Restauración Dental , Restauración Dental Permanente/métodos , Corona del Diente/patología , Fracturas de los Dientes/prevención & control , Resinas Compuestas/química , Recubrimiento de la Cavidad Dental , Análisis del Estrés Dental , Vidrio , Humanos , Mandíbula , Metacrilatos/química , Metacrilatos/uso terapéutico , Diente Molar , Tratamiento del Conducto Radicular/instrumentación , Tratamiento del Conducto Radicular/métodos , Estadísticas no Paramétricas , Estrés Mecánico
7.
J Int Med Res ; 38(4): 1243-9, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-20925996

RESUMEN

This study tested the hypothesis that individual counselling in the third trimester would increase postpartum contraceptive use to a greater extent than only providing an educational leaflet. A total of 180 third trimester pregnant women of mean age 28.3 years who were attending Marmara University Hospital for prenatal care were enrolled. One-third were randomly allocated to receive prenatal contraceptive counselling and the remaining two-thirds (control group) received an educational leaflet. Participants were followed-up at 6 - 9 months postpartum. The majority of subjects (91.5%) wanted to use contraception after delivery but 26.7% did not know which method to use. At follow-up, 79.6% of all women had begun a postpartum contraceptive regime and 68.7% were using a modern contraceptive method. Overall, there was no statistically significant difference in postpartum contraception use between the control and intervention groups in this study population. It is, therefore, concluded that prenatal counselling was not superior to educational leaflets for increasing the use of effective and modern postpartum contraception.


Asunto(s)
Conducta de Elección , Anticoncepción/métodos , Consejo , Servicios de Planificación Familiar , Periodo Posparto/fisiología , Atención Prenatal , Adulto , Femenino , Humanos , Folletos , Embarazo , Turquía
8.
J Psychosom Obstet Gynaecol ; 29(1): 33-8, 2008 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-17852656

RESUMEN

Early adverse emotional response which is often detected in the form of depressive symptoms is a predictor of postpartum depression following the birth. The aim of our study is to highlight contextual and individual factors that have an impact on mothers' depressive symptoms during the early postpartum period. One hundred mothers participated in the study. Maternal depressive symptoms were screened by Edinburgh Postpartum Depression Scale (EPDS), and maternal anxiety level was assessed by State-Trait Anxiety Inventory (STAI) at early postpartum period (7-10 days). The Multidimensional Scale of Perceived Social Support (MSPSS) was used for the assessment of maternal social support. The Adult Attachment Scale (AAS) was used to determine the attachment style of the mother. The mean EPDS score of mothers who live in extended families is found to be significantly lower than others who live in nuclear families (extended families 7.13+/-7.39, nuclear families 11.77+/-5.96, p=0.006). Significant positive correlations were found between EPDS total scores and ambivalent attachment style group (r=.0436, p=.000), and avoidant attachment style group (r=.328, p=.001). The level of perceived family support also showed a negative correlation with EPDS total score (r=-.363, p=.000). The regression of EPDS total score with ambivalent attachment style and state anxiety level are positively predicted and the level of perceived family support and existence of wider social network negatively predict the EPDS total score in the first postpartum week. Maternal attachment patterns, living with the extended family and existence of family support have an important impact on early postpartum emotional adaptation. Early intervention strategies should count towards these individual and contextual factors when designing screening and preventive interventions for postpartum depression.


Asunto(s)
Depresión Posparto/psicología , Relaciones Familiares , Madres/psicología , Apego a Objetos , Apoyo Social , Femenino , Humanos , Recién Nacido , Modelos Lineales , Masculino , Relaciones Madre-Hijo , Análisis Multivariante , Factores de Riesgo , Turquía
9.
Endocrinology ; 132(3): 1286-91, 1993 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-8095015

RESUMEN

The mechanism by which GH-releasing peptides elicit GH secretion has remained largely unknown. In this study, the effects of a second generation GH-releasing peptide, Ala-His-D-beta Nal-Ala-Trp-D-Phe-Lys-NH2(GHRP-1), on cAMP, intracellular Ca2+ ([Ca2+]i), and GH release were examined using rat pituitary gland static monolayer cell cultures. It was found that GHRP-1 increased GH release in a dose-dependent manner up to 3-fold, while having no effect on cAMP levels. In contrast, simultaneous elevations of cAMP and GH were observed after treatment with GHRH. To further define the underlying mechanism of GHRP-1-mediated GH release, its effect on [Ca2+]i was determined using a fluorescent Ca2+ indicator, fura-2. GHRP-1 dose dependently increased [Ca2+]i up to 45.5 nM +/- 5.6 nM. A similar elevation of [Ca2+]i was observed after GHRH treatment. Similar to GHRH, GHRP-1-induced increases in [Ca2+]i and GH release were inhibited by somatostatin. Furthermore, the GHRP-1-induced increases in [Ca2+]i and GH were also suppressed by nifedipine. The interaction between the voltage-dependent Ca2+ channels and GHRP-1 was investigated in cells maximally stimulated by KCl. The addition of GHRP-1 had no effect on the KCl-stimulated GH release. To investigate the possible interaction between the adenylyl cyclase pathway and GHRP-1, cells were maximally stimulated with forskolin or (Bu)2cAMP. Addition of GHRP-1 stimulated GH release beyond that observed using cAMP elevating agents. Similar results were obtained in the presence of a protein kinase C, 4 beta-phorbol 12-myristate 13-acetate (PMA). The GHRP-1-stimulated GH release was additive to that observed with PMA stimulation. Based on these findings, it was concluded that 1) GHRP-1 treatment leads to an increase in [Ca2+]i; 2) unlike GHRH, GHRP-1 releases GH via a Ca(2+)-dependent, cAMP-independent mechanism; 3) GHRP-1-induced increases in [Ca2+]i and GH release are sensitive to somatostatin inhibition; and 4) cAMP-elevating agents and PMA have an additive effect on the GHRP-1-stimulated GH release, indicating these agents stimulate GH release via a mechanism separate from that of GHRP-1.


Asunto(s)
Hormona Liberadora de Hormona del Crecimiento/análogos & derivados , Hormona del Crecimiento/metabolismo , Oligopéptidos , Adenohipófisis/metabolismo , Secuencia de Aminoácidos , Animales , Calcio/metabolismo , Células Cultivadas , Colforsina/farmacología , AMP Cíclico/metabolismo , Relación Dosis-Respuesta a Droga , Hormona Liberadora de Hormona del Crecimiento/farmacología , Cinética , Masculino , Datos de Secuencia Molecular , Nifedipino/farmacología , Adenohipófisis/efectos de los fármacos , Ratas , Ratas Sprague-Dawley , Somatostatina/farmacología , Acetato de Tetradecanoilforbol/farmacología
10.
Fertil Steril ; 66(6): 1026-7, 1996 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-8941074

RESUMEN

OBJECTIVE: To describe a unique case of massive ascites associated with gonadotropin therapy. DESIGN: Case report. SETTING: Patient in a hospital-based private IVF center. INTERVENTION(S): Ovulation induction with gonadotropins for subsequent IVF. RESULT(S): Ovulation induction with gonadotropins resulted in the accumulation, before ovulation, of 1,200 and 2,000 mL of peritoneal fluid in two consecutive cycles. The stimulation yielded four and six oocytes, respectively. CONCLUSION(S): Gonadotropin therapy can result in ascites before ovulation without an exaggerated ovarian response and without interfering with follicular development.


Asunto(s)
Ascitis/inducido químicamente , Gonadotropinas/efectos adversos , Ovulación , Adulto , Líquido Ascítico/metabolismo , Femenino , Fertilización In Vitro , Gonadotropinas/uso terapéutico , Humanos , Oocitos , Inducción de la Ovulación , Manejo de Especímenes
11.
Fertil Steril ; 66(1): 122-5, 1996 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-8752622

RESUMEN

OBJECTIVE: To determine the effect of the presence of a unilateral or bilateral hydrosalpinx on the outcome with IVF-ET. DESIGN: Retrospective analysis of clinical and laboratory data. SETTING: Hospital-based private IVF center. PATIENTS: Eight hundred forty-six patients with tubal disease younger than age 40 years undergoing 1,766 stimulation cycles. In 118 cycles, a hydrosalpinx was noted sonographically (group I) whereas, in 1,648 cycles, no such image was documented. MAIN OUTCOME MEASURES: Pregnancy and implantation rates. RESULTS: Group I displayed a significantly lower pregnancy rate per transfer than group II (16.84% versus 36.83%) and a lower implantation rate (3.92% versus 11.53%). CONCLUSION: The presence of hydrosalpinx adversely affects the outcome of IVF.


Asunto(s)
Implantación del Embrión , Enfermedades de las Trompas Uterinas/fisiopatología , Fertilización In Vitro , Adulto , Femenino , Humanos , Embarazo , Resultado del Embarazo , Índice de Embarazo , Estudios Retrospectivos
13.
Panminerva Med ; 41(2): 125-8, 1999 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-10479910

RESUMEN

BACKGROUND: Thrombomodulin (TM) is a glycoprotein and besides its anticoagulant property it is accepted as an onco developmental antigen. Considering these properties we hypothesised that active TMB might have a role in cancer cell behaviour. METHODS: We measured serum TMB levels by the enzyme immunoassay method in 40 patients with lung cancer and 20 healthy subjects. RESULTS: TMB levels were found as 54.6 +/- 11.5 in controls and 60.9 +/- 31.2 ng/ml in lung cancer patients TM levels were 59.4 +/- 24.2 ng/ml in 24 epidermoid carcinoma patients, 65 +/- 50.2 ng/ml in 10 small cell carcinoma patients and 60 +/- 18.4 ng/ml in 6 adenocarcinoma patients. Patients with stage 4 and distant metastasis had a value of 65 +/- 33.9 ng/ml. No significant differences were found between healthy subjects and cancer patients. Also the differences between 3 groups of patients were insignificant. CONCLUSIONS: It was concluded that serum TMB levels could not be accepted as a tumour marker in lung cancer patients.


Asunto(s)
Biomarcadores de Tumor/sangre , Neoplasias Pulmonares/sangre , Trombomodulina/sangre , Adulto , Anciano , Femenino , Humanos , Técnicas para Inmunoenzimas , Masculino , Persona de Mediana Edad
14.
J Chemother ; 11(3): 211-4, 1999 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-10435684

RESUMEN

Acute exacerbations, most of which are due to lower respiratory tract infections, cause great morbidity and mortality in patients with chronic obstructive pulmonary disease (COPD) and most of these are due to lower respiratory tract infections. The aim of this study was to determine the causative organism and the effects of azithromycin, ampicillin sulbactam (sultamicillin), ciprofloxacin and cefaclor monohydrate therapy in COPD. One hundred and six patients with COPD in acute exacerbation were randomized into four groups for empiric antibiotic treatment following lung function tests and sputum examination. The most common strains isolated from sputum were Haemophilus influenzae (30.8%), Streptoccocus pneumoniae (12%) and Moraxella catarrhalis (7.7%). Azithromycin, sultamicillin, ciprofloxacin and cefaclor monohydrate were found to be effective in treating COPD exacerbations.


Asunto(s)
Antiinfecciosos/uso terapéutico , Enfermedades Pulmonares Obstructivas/tratamiento farmacológico , Ampicilina/uso terapéutico , Azitromicina/uso terapéutico , Cefaclor/uso terapéutico , Ciprofloxacina/uso terapéutico , Quimioterapia Combinada/uso terapéutico , Femenino , Humanos , Enfermedades Pulmonares Obstructivas/microbiología , Masculino , Persona de Mediana Edad , Sulbactam/uso terapéutico , Resultado del Tratamiento
15.
Eur J Pediatr Surg ; 11(3): 158-62, 2001 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-11475110

RESUMEN

BACKGROUND AND PURPOSE: In the literature, there are few reports documenting intra-abdominal organ necrosis following laparoscopic procedures. This experimental study was planned to investigate whether intestinal ischemia develops during laparoscopic procedures and if laparoscopy could cause intestinal necrosis. MATERIAL AND METHODS: Two experimental groups, each consisting of 10 adult New-Zealand rabbits, were used in this study. The first group comprised the study group which had pneumoperitoneum, the second group comprised the normal animals serving as the controls. A cervical tracheostomy was performed to achieve successful general anesthesia in both groups. In the study group, intraperitoneal CO2 insufflation was carried out and intraabdominal pressure (IAP) was adjusted so as not to exceed the arterial blood pressure. After 20 min high IAP period, the intraabdominal gas was aspirated. Five minutes later, samples of both small intestine and colon tissue were taken. In the control group, tissue samples were taken 25 min after anesthesia was achieved. Xanthine oxidase (XO) and malondialdehyde (MDA) levels were measured as indicators of intestinal ischemia and lipid peroxidation in the intestinal tissues. Statistical analysis was done to compare the XO and MDA levels of the small intestines and colons of both groups. RESULTS: The mean colonic XO levels were 1.323+/-1.17 and 0.217+/-0.27 (U/mg protein) in study and control groups, respectively. This difference was statistically significant (t = 2.60, p<0.05). The other comparisons with regard to XO and MDA levels were statistically not significant. CONCLUSION: Our results demonstrate that intraperitoneal CO2 insufflation in which intraabdominal pressure was adjusted to be lower than arterial blood pressure may affect oxygenization of the colon.


Asunto(s)
Colitis Isquémica/etiología , Colitis Isquémica/patología , Intestino Grueso/patología , Intestino Delgado/patología , Laparoscopía/efectos adversos , Animales , Biopsia con Aguja , Análisis de los Gases de la Sangre , Modelos Animales de Enfermedad , Femenino , Concentración de Iones de Hidrógeno , Laparoscopía/métodos , Masculino , Neumoperitoneo Artificial , Probabilidad , Conejos , Valores de Referencia , Medición de Riesgo
16.
Eur J Pediatr Surg ; 9(2): 101-3, 1999 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-10342117

RESUMEN

In this study the reliability of anorectal manometry (ARMM) in Hirschsprung's disease (HD) in the neonatal period is evaluated. ARMM was performed in 59 patients (age ranging between 2 to 90 days) in whom HD was suspected. Rectal biopsy was performed in 23 newborn whose rectoanal inhibitory reflex (RAIR) was not identified in the ARMM study and in 13 RAIR-positive newborn due to strong clinical signs supporting HD or persistence of symptoms during their follow-up. Other RAIR-positive patients were followed up to 4 months to 3.5 years and no problems were encountered. Among the 36 newborn with rectal biopsies, if the results were compared to ARMM studies, there were one false-positive and two false-negative results. The sensitivity, specificity, positive predictive value, negative predictive value and accuracy of ARMM in the diagnosis of HD are 91.6%, 95.6%, 84.6% and 91.6% respectively. We conclude that ARMM can be used as a screening test in patients in whom HD is suspected during the neonatal period, but for definitive diagnosis it must be combined with other diagnostic tests.


Asunto(s)
Canal Anal/fisiopatología , Enfermedad de Hirschsprung/diagnóstico , Manometría , Recto/fisiopatología , Femenino , Enfermedad de Hirschsprung/epidemiología , Humanos , Lactante , Recién Nacido , Masculino , Manometría/estadística & datos numéricos , Valor Predictivo de las Pruebas , Reproducibilidad de los Resultados , Sensibilidad y Especificidad
17.
Eur J Pediatr Surg ; 11(3): 177-81, 2001 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-11475114

RESUMEN

AIM: The aim of this study was to investigate the feasibility and benefits of diagnosis and interventional laparoscopy in those paediatric patients with nonpalpable testes (NPT). PATIENTS AND METHODS: Between 1992 and 1999, 75 patients with NPT (mean age 3 years, range 6 months to 14 years) were treated. 86 testes were evaluated. RESULTS: According to the laparoscopic findings 4 groups of testes were identified: Vanishing testis (n = 32), low abdominal testis (< 2 cm to the internal ring) (n = 26), high abdominal testis (> 2 cm to the internal ring) (n = 24) and intersex patients (n = 4). Of the first group, 19 testes (one bilateral) had blind-ending spermatic cord and vessels and if an atrophic testicular tissue was identified, it was removed laparoscopically. For those with spermatic cord and vessels beyond the internal ring (13 testes), atrophic testes were removed through a high scrotal incision. 19 testes of the second group had a laparoscopy-assisted orchidopexy. In the same group a laparoscopic orchidopexy was performed on 7 testes. 24 testes in the 3rd group had a Fowler-Stephens (FS) stage 1 and 18 testes had a laparotomy performed for FS stage 2 procedure (laparotomy and orchidopexy) after 6 months. At laparotomy there was no evidence of testicular atrophy in all but one testis, which was removed and the FS stage 2 procedure was completed in 17 testes. The follow-up period was between 6 months and 4 years, and two more testicular atrophies were noted after FS stage 2. The results were satisfactory in 15 out of 18 testes (83%). In the intersex group, the patient with testicular feminization underwent laparoscopic orchiectomy. The other patient with bilateral nonpalpable testis was identified as having an uterus and two intraabdominally located gonads on laparoscopy and gonadal biopsies were obtained for diagnosis. Histology demonstrated bilateral ovotestes, confirming the diagnosis of a true hermaphrodite. CONCLUSION: We are of the opinion that laparoscopy decreases the number of laparotomies in NPT, allows a single-stage procedure in low abdominal testis, and facilitates clip ligation of the testicular artery in high abdominal testis. Laparoscopy also provides diagnostic and therapeutic options for vanishing testis and intersex patients.


Asunto(s)
Criptorquidismo/diagnóstico , Criptorquidismo/cirugía , Laparoscopía/métodos , Procedimientos Quirúrgicos Mínimamente Invasivos/métodos , Adolescente , Niño , Preescolar , Criptorquidismo/epidemiología , Estudios de Factibilidad , Estudios de Seguimiento , Humanos , Incidencia , Lactante , Masculino , Estudios Retrospectivos , Medición de Riesgo , Resultado del Tratamiento
18.
Mikrobiyol Bul ; 14(2): 141-55, 1980 Apr.
Artículo en Turco | MEDLINE | ID: mdl-7464582

RESUMEN

The production, testing and use of the Single Cell Proteins are rather new fields of work for this country. The value of SCP in animal feeding and human diet is well established elsewhere in the world. In this part of this review article brief information is given on the use of algae, yeasts and molds for SCP production.


Asunto(s)
Proteínas en la Dieta , Eucariontes/metabolismo , Proteínas Fúngicas/biosíntesis , Proteínas de Plantas/biosíntesis , Levaduras/metabolismo
19.
Mikrobiyol Bul ; 13(3): 313-23, 1979 Jul.
Artículo en Turco | MEDLINE | ID: mdl-554001

RESUMEN

As elsewhere in the world, the number of resistant enteric bacteria is rapidly increasing in this country. In a survey made in 1977 on about 40,000 strains of enteric bacteria in Clinical Pathology Laboratory of Hacettepe University Medical School, Ankara, Turkey, 70% to 97% of enteric bacteria were shown to be resistant to conventional antimicrobic agents. Also the rates of multiple-resistant strains of enteric bacteria are increasing quite rapidly. In most of these strains this increase proved to depend on the presence of R plasmids. In this paper, these and related facts were summarized and some precautions were suggested to lessen the increase of resistant strains in this country.


Asunto(s)
Antibacterianos/farmacología , Enterobacteriaceae/efectos de los fármacos , Factores R , Farmacorresistencia Microbiana
20.
Mikrobiyol Bul ; 18(3): 160-3, 1984 Jul.
Artículo en Turco | MEDLINE | ID: mdl-6493077

RESUMEN

Blood serum samples taken from typhoid fever suspected patients during the last typhoid fever epidemic in Ankara in 1981 were tested comparatively with classical Gruber-Widal test and microagglutination technique using safranin-stained Salmonella typhi O and H antigens. Results showed that microagglutination technique was more reliable, less time and antigen consuming and permitted a more objective evaluation of agglutinin titers.


Asunto(s)
Anticuerpos Antibacterianos/análisis , Salmonella typhi/inmunología , Fiebre Tifoidea/inmunología , Pruebas de Aglutinación/métodos , Humanos
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