Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 25
Filtrar
1.
Georgian Med News ; (346): 33-37, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38501618

RESUMO

This study conducted in Baghdad focused on patients with coronary heart disease admitted to three hospitals. The study included 60 Iraqi patients with coronary heart disease and a control group of 30 healthy individuals. Blood samples were collected from both groups after fasting. The study analyzed the demographic characteristics of the patients and control group, including age groups, sex distribution, and BMI. The majority of patients had hypertension, while 58.33% had diabetes. The study found that IHD patients had significantly higher T3 and T4 levels compared to the control group. However, there was no significant difference in TSH levels. The study also examined thyroid function parameters among different age groups and found no significant differences in individuals with hypothyroidism. The highest prevalence of hyperthyroidism was among individuals with hypertension, while the highest spread of hypothyroidism was among individuals with diabetes. The study observed significant differences in mean HbA1c levels among the three groups, with the highest levels in patients with hypothyroidism. In conclusion, this study suggests potential alterations in thyroid function associated with ischemic heart disease and emphasizes the need for further research on the clinical implications and underlying mechanisms involved.


Assuntos
Doença das Coronárias , Diabetes Mellitus , Hipertensão , Hipertireoidismo , Hipotireoidismo , Isquemia Miocárdica , Humanos , Iraque/epidemiologia , Hipotireoidismo/complicações , Hipotireoidismo/epidemiologia , Hipertireoidismo/complicações , Hipertireoidismo/epidemiologia , Isquemia Miocárdica/complicações , Isquemia Miocárdica/epidemiologia , Diabetes Mellitus/epidemiologia , Hipertensão/complicações , Hipertensão/epidemiologia , Tireotropina , Tiroxina
2.
Georgian Med News ; (343): 14-17, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-38096508

RESUMO

There is a rising interest in studying the possible therapeutic value of fat-soluble micronutrients like vitamin K2 for preventing or controlling type 2 diabetes mellitus. The present study was designed to evaluate levels of vitamin K2 in patients with type 2 diabetes mellitus. The study enrolled 60 patients with type 2 diabetes mellitus and 30 individuals as a control group. Blood samples were collected from each participant for estimation of vitamin K2 by (ELISA), HbA1c by (Cobas), lipid profile by (colourimetric methods) and calculated BMI. The mean±Standard Deviation (SD) of vitamin K2 levels for the type 2 diabetes group were (185.13±30.08) pg/ml, with a highly significant decrease (p<0.001) when compared with the control group (303.91±58.60) pg/ml. The HbA1c, cholesterol, TG, and LDL-C level for the type 2 diabetes group highly significant increase (p<0.001) when compared with the control while HDL-C decreased when compared with the control group. The current study concluded that: Vitamin K2 levels showed a highly significant decrease in patients with uncontrolled type 2 diabetes mellitus when compared with those in the control group. Vitamin K2 levels play an important role in improving glycated haemoglobin and lipid profiles in patients with type 2 diabetes mellitus.


Assuntos
Diabetes Mellitus Tipo 2 , Humanos , Hemoglobinas Glicadas , Vitamina K 2/uso terapêutico , Glicemia/análise , Colesterol
3.
Georgian Med News ; (343): 63-66, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-38096518

RESUMO

An ovarian cyst is a common hormonal disorder that affects the ovaries in females of reproductive age. Environmental and genetic factors may contribute to the beginning of the disease, although the lack of a clear aetiology. Menstrual irregularities, increased hair growth, and acne are some of the most important signs. In order to control symptoms and prevent the development of chronic medical disorders, early identification is essential. The goal of this study was to assess fetuin-A levels and relationships in polycystic ovary syndrome (PCOS) patients. The connection between fetuin-A and asprosin and several biochemical parameters, including fasting blood sugar, insulin, cholesterol, and triglycerides in women patients with polycystic ovarian syndrome. Ninety females were included in the trial; 60 individuals (females) were selected who were diagnosed with PCOS by a gynaecological specialist and ranged in age from 15 to 45. The result was a change in the ovulation-inducing hormones LH and FSH as well as an increase in the proteins fetuin-A and Asprosin. On the other hand, 30 individuals (all female) were used as a control group. Their ages were recorded as well as the fact that they did not have PCOS. For all groups, laboratory tests were done to determine the levels of fetuin-A, Asprosin, fasting blood sugar, Insulin, total cholesterol, and triglyceride. For parents and a control group, investigators performed an asprosin analysis, The findings of the comparison were statistically not significant (P value=0.115). performed a Fetuin-A analysis as well, the results were statistically highly significant with a P value of 0.0002 when compared to the outcomes of the two sick groups and the healthy controls.


Assuntos
Síndrome do Ovário Policístico , Feminino , Humanos , alfa-2-Glicoproteína-HS , Glicemia/metabolismo , Colesterol , Insulina
4.
Georgian Med News ; (340-341): 81-86, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37805879

RESUMO

Benign prostatic hyperplasia (BPH) is a common benign tumour of the prostate that becomes more common as men age. The purpose of this study is to investigate the relationships between serum zinc and testosterone in BPH patients in Iraq. This case-control study entailed gathering 90 subjects which were separated into two groups, group A consisted of 60 patients with benign prostatic hyperplasia, while group B consisted of 30 healthy males. Diagnosis revealed patient's prostate volumes (PV) were equal to or more than 25 millilitres. Both groups had their serum zinc and serum testosterone levels. The study showed that the mean prostate size was elevated significantly in the BPH group (54.0±8.4cc) as compared with the control group (19.66±2.88cc) (P:0.01). There is a significant reduction in the serum testosterone concentration of benign prostatic hyperplasia patients, (4.05±3.1 ng/ml), as compared with control subjects, (11.37±2.87; p≤0.01). There is a significant reduction in the serum zinc concentration of benign prostatic hyperplasia patients, (70.4±9.63 ng/ml), as compared with control subjects, (99.3±10.5; p≤0.01). The higher percentage of benign prostatic hyperplasia is in patients above 66 years, and the lowest is in the age group 45-55 years. Serum testosterone and zinc are significantly lower in benign prostatic hyperplasia patients than in age-matched healthy controls. All benign prostatic hyperplasia patients have larger prostates than normal healthy control participants of the same BMI. All BMI groups of benign prostatic hyperplasia patients had lower serum testosterone and zinc than normal healthy control persons of the same BMI.


Assuntos
Hiperplasia Prostática , Testosterona , Masculino , Humanos , Pessoa de Meia-Idade , Hiperplasia Prostática/patologia , Estudos de Casos e Controles , Próstata/patologia
5.
Georgian Med News ; (338): 53-56, 2023 May.
Artigo em Inglês | MEDLINE | ID: mdl-37419471

RESUMO

Osteoarthritis (OA) is the most common form of arthritis, affecting 1 in 3 people over age 40 and women more so than men. The prevalence of OA is rising due to the increasing prevalence of OA risk factors, including obesity, physical inactivity, and joint injury. The aim of the study is to determine the correlation of Melatonin, Vitamin D (VitD) with osteoarthritis (OA) in women premenopausal OA women in age between 40-50 years old. The study included 60 patients with OA and 30 patients without OA from the general Balad Hospital in Salah Al-Den governorates. All subjects were premenopausal women between 40-50 years old. OA was diagnosed according to the clinical examination, X-ray diagnosis by Bone mineral density testing using STRATOS device, and biochemical tests using ELISA and COBOS 6000. This study proved that Melatonin is correlated with osteoarthritis in premenopausal women, there is a significant decrease (P≤0.01) in Melatonin (1.308+0.20 pg/dl), Vitamin D (22.82+1.53) mg/ml. Melatonin was positively correlated with vitamin D with no correlation with other biomarkers. Osteoarthritis in premenopausal women is strongly affected by Melatonin levels and Vitamin D, and it's recommended to use Melatonin and other chemical parameters as markers and potential therapeutic drugs.


Assuntos
Melatonina , Osteoartrite , Masculino , Humanos , Feminino , Adulto , Pessoa de Meia-Idade , Vitamina D , Iraque , Densidade Óssea , Vitaminas
6.
Georgian Med News ; (344): 111-113, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-38236109

RESUMO

The role of Vitamin D is primarily to maintain calcium and phosphate levels in the bloodstream. Significantly, steroid hormone receptors are the binding sites for both vitamin D and thyroid hormone. However, the vitamin D and thyroid function relationship is still not fully understood. The study aims to measure vitamin D serum levels and to investigate its relation with hypothyroidism in Iraq patients.This case-control study was carried out during the period from the first of March to the end of May 2023 in Baghdad City, Iraq. The study included 90 subjects that were divided into 2 groups. The first group consists of 60 people infected with hypothyroidism. The second group (control group) consists of 30 healthy people. Blood samples were assessed for serum vitamin D, TSH, T3 and T4 using a chemiluminescence microparticle immunoassay analyzer while serum anti-TPO used an enzyme-linked immunosorbent assay technique.The study showed that the level of T3, T4 and vitamin D in hypothyroidism patients significantly decreased compared to the control group (p<0.001). While TSH and anti-TPO levels in hypothyroidism patients significantly increase in comparison to the control group (p<0.001). The study found a significant negative correlation between (vitamin D and T3) with (p<0.01), while the study showed a significant positive correlation between (TSH and vitamin D) with (p<0.01). Finally, the study demonstrated a non-significant weak negative correlation (p>0.05) between (vitamin D and T4), but a non-significant weak positive correlation (p>0.05) between (vitamin D and anti-TPO).Patients with hypothyroidism had noticeably low levels of vitamin D, indicating that this vitamin D may be involved in the aetiology of hypothyroidism.


Assuntos
Hipotireoidismo , Vitamina D , Humanos , Testes de Função Tireóidea , Iraque , Estudos de Casos e Controles , Vitaminas , Hipotireoidismo/diagnóstico , Tireotropina
7.
J Palliat Care ; 37(2): 99-106, 2022 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-35014894

RESUMO

Objectives: The Do-Not-Resuscitate (DNR) order is part of most hospitals' policies on the process of making and communicating decisions about a patient's resuscitation status. Yet it has not become a part of our society's ritual of dying in the Middle East especially among children. Given the diversity of pediatric patients, the DNR order continues to represent a challenge to all parties involved in the care of children including the medical team and the family. Methods: This was a retrospective review of the medical charts of patients who had died in the pediatric intensive care unit (PICU) of a tertiary academic institution in Beirut, Lebanon within the period of January 2012 and December 2017. Results: Eighty-two charts were extracted, 79 were included in the analysis. Three were excluded as one patient had died in the Emergency Department (ED) and 2 charts were incomplete. Most patients were male, Lebanese, and from Muslim families. These patients clinically presented with primary cardiac and oncological diseases or were admitted from the ED with respiratory distress or from the operating room for post-operative management. The primary cause of death was multiorgan failure and cardiac arrest. Only 34% of families had agreed to a DNR order prior to death and 10% suggested "soft" resuscitation. Most discussions were held in the presence of the parents, the PICU team and the patient's primary physician. Conclusions: The DNR order presents one of the most difficult challenges for all care providers involved, especially within a culturally conservative setting such as Lebanon. As the numbers suggest, it is difficult for parents to reach the decision to completely withhold resuscitative measures for pediatric patients, instead opting for "soft" resuscitations like administering epinephrine without chest compressions.


Assuntos
Unidades de Terapia Intensiva Pediátrica , Ordens quanto à Conduta (Ética Médica) , Criança , Serviço Hospitalar de Emergência , Feminino , Hospitalização , Humanos , Masculino , Estudos Retrospectivos
8.
Oman Med J ; 36(2): e246, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-33854795

RESUMO

OBJECTIVES: As with global trends, the prevalence of differentiated thyroid cancer (DTC) has increased in recent years in Oman. However, to the best of our knowledge, no local studies have yet been published evaluating the prognosis of DTC cases in Oman. This study aimed to assess disease-free survival (DFS) and prognostic factors related to DTC among Omani patients attending a tertiary care center. METHODS: This retrospective, observational cohort study was conducted between January 2006 and May 2016 at the National Diabetes and Endocrine Center in Oman. Data related to DFS and prognostic factors were obtained from the electronic medical records of all ≥ 18-year-old patients diagnosed with DTC during the study period. RESULTS: A total of 346 DTC cases were identified. Overall, 82.7% of patients were disease-free at their last follow-up appointment. Univariate analysis indicated that various tumor characteristics including histological subtype (i.e., papillary carcinoma, Hurthle cell cancer, and minimally invasive follicular thyroid carcinoma), lymph node status, number of lymph node metastases, distant metastasis status, and TNM status (primary tumor (T), regional lymph node (N), distant metastasis (M) stage) were strong prognostic factors for DFS (p < 0.050). According to multivariate regression analysis, lymph node status, extrathyroidal extension, and angiovascular invasion were independent predictors of DFS (p < 0.050). CONCLUSIONS: The overall prognosis of DTC among Omani patients was excellent. Treatment and follow-up strategies for patients with DTC should be tailored based on the individual's risk factor profile.

9.
Adv Colloid Interface Sci ; 272: 102020, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31466000

RESUMO

Nanoparticles are particles with a characteristic dimension below 100 nm. The properties of nanoparticles differ substantially from those of "big" colloidal particles (size bigger than 1 µm) because radius of surface forces, which is around 100 nm, is greater than or comparable with the nanoparticles size. The latter means that each nanoparticle could be completely covered by the surface forces of the neighbouring particles at small enough separation. It also means that the well-known Derjaguin approximation cannot be applied directly and some modifications are required. Pairwise interaction between nanoparticles can be used only at an extremely low volume fraction of nanoparticles (below some critical volume fraction, which is ~0.02%), and above this concentration a new theory based on many-particle interactions should be applied, which is yet to be developed. Some recent progress in the area of interaction between nanoparticles is reviewed and the properties of nanosuspensions based on interaction between nanoparticles are described. The authors have not attempted to cover all available literature in the area but instead have tried to underline the fundamental problems in the area which need to be addressed.

10.
Ter Arkh ; 89(5): 113-117, 2017.
Artigo em Russo | MEDLINE | ID: mdl-28631709

RESUMO

The expression of cancer-testis (CT) genes varies with tumor type. There are tumors with high, low, and intermediate gene expressions. Tumor cells of different origin are characterized by ST gene co-expression. The expression of ST genes increases in later stages of tumor development in the presence of metastases. In colon cancer, the tumor samples showed most frequently MAGE-A and SSX mRNA. The peripheral blood samples displayed most commonly XAGE, MAGE-C, and SSX mRNA. In patients with colon cancer, the expression of TSP50, MAGE-A(1-6), and SSX1,2,4 genes was associated with a poor prognosis, that of MAGE-C1 and XAGE1 was related to a favorable prognosis.


Assuntos
Antígenos de Neoplasias/genética , Neoplasias do Colo/genética , Proteínas de Neoplasias/genética , Fragmentos de Peptídeos/genética , Proteínas Repressoras/genética , Serina Endopeptidases/genética , Perfilação da Expressão Gênica , Regulação Neoplásica da Expressão Gênica , Humanos , Metástase Neoplásica , Estadiamento de Neoplasias , Prognóstico
11.
Oman Med J ; 30(5): 382-90, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-26421121

RESUMO

A 50-year-old Omani woman presented to the Outpatient Clinic, Royal Hospital, Oman with right upper abdominal pain and backache that had lasted 10 days. She had no palpitation, sweating, or hypertension (blood pressure 122/78mmHg). The patient's history revealed that she had a similar incidence of abdominal pain two months prior, which was a "dull ache" in nature and somewhat associated with headache. The pain was relieved using a mild analgesic drug. Abdominal ultrasonography showed a right adrenal mass, and both computed tomography and magnetic resonance imaging of the adrenal glands confirmed a right adrenal mass consistent with adrenal pheochromocytoma. However, clinical biochemistry tests revealed normal levels of plasma catecholamines (dopamine, norepinephrine, and epinephrine) and metanephrine, which are unusual findings in adrenal pheochromocytoma. Meanwhile, the patient had markedly raised plasma normetanephrine (10-fold) which, together with the normal metanephrine, constitutes a metabolic profile that is compatible with extra-adrenal pheochromocytoma. The patient also had markedly raised chromogranin A (16-fold), consistent with the presence of a neuroendocrine tumor. Laparoscopic right adrenalectomy was done and the adrenal tumor was excised and retrieved in total. Histopathology and immunohistochemistry confirmed the diagnosis of adrenal pheochromocytoma; the tumor cells being positive for chromogranin, synaptophysin, and S-100 protein. Following surgery, the patient did well and showed full recovery at follow-up after three months. Molecular genetic testing showed no pathogenic mutation in pheochromocytoma genes: MAX, SDHA, SDHAF2, SDHB, SDHC, SDHD, VHL, and PRKAR1A. A review of the literature was conducted to identify the pathophysiology and any previous reports of such case. To our knowledge, this is the first report in Oman of the extremely rare entity of pheochromocytoma with an unusual clinical and biochemical scenario.

12.
Saudi Med J ; 36(7): 874-7, 2015 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-26108596

RESUMO

OBJECTIVES: To determine the prevalence of thyroid cancer in patients with hyperthyroidism. METHODS: This is a retrospective observational study using the data of 71 Omani patients with a diagnosis of hyperthyroidism due to Grave's disease, toxic multinodular goiter, and solitary toxic adenoma. These patients underwent thyroidectomy at the Royal Hospital (RH), Muscat, Oman, and were followed up at the National Diabetes and Endocrine Center (NDEC) between 2007 and 2013. The details were collected from the medical records of both the RH and the NDEC. Patients who underwent thyroidectomy for other reasons like non-toxic goiter and hypothyroidism with cancer were excluded from the study. RESULTS: Thyroid cancer was identified in 32.8% (n=23) of patients with hyperthyroidism. Half of these patients 52.1% (n=12) had papillary micro-cancer (intra-thyroidal), and 3 patients with Grave's disease (13%) had lymph nodes metastasis (loco-regional infiltration. The cancer preponderance was higher in young (n=21, 91.3%) and female patients (n=18, 73.9%). Most patients with thyroid cancer had abnormal ultrasound neck findings and thyroid scintigraphy (99 mTc uptake). CONCLUSION: Many patients with hyperthyroidism in Muscat, Oman, especially those with Grave's disease, show malignancy, and hence a proper initial evaluation of these patients is required as part of long-term management.


Assuntos
Hipertireoidismo/complicações , Neoplasias da Glândula Tireoide/epidemiologia , Adulto , Estudos de Coortes , Feminino , Humanos , Masculino , Prevalência , Estudos Retrospectivos , Arábia Saudita/epidemiologia , Neoplasias da Glândula Tireoide/complicações
13.
Oman Med J ; 29(1): 55-9, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24498484

RESUMO

This is the first report of congenital adrenal hyperplasia (CAH) due to combined 17α-hydroxylase/17,20 lyase deficiency in an Omani patient who was initially treated for many years as a case of hypertension. CAH is an uncommon disorder that results from a defect in steroid hormones biosynthesis in the adrenal cortex. The clinical presentation depends on the site of enzymatic mutations and the types of accumulated steroid precursors. A 22-year-old woman who was diagnosed to have hypertension since the age of 10 years who was treated with anti-hypertensive therapy was referred to the National Diabetes and Endocrine Centre, Royal Hospital, Oman. The patient also had primary amenorrhea and features of sexual infantilism. Full laboratory and radio-imaging investigations were done. Adrenal steroids, pituitary function and karyotyping study were performed and the diagnosis was confirmed by molecular mutation study. Laboratory investigations revealed adrenal steroids and pituitary hormones profile in addition to 46XY karyotype that are consistent with the diagnosis of CAH due to 17α-hydroxylase deficiency. Extensive laboratory workup revealed low levels of serum cortisol (and its precursors 17α-hydroxyprogesterone and 11-deoxycortisol), adrenal androgens (dehydroepiandrosterone sulfate and androstenedione), and estrogen (estradiol); and high levels of mineralocorticoids precursors (11-deoxycorticosterone and corticosterone) with high levels of ACTH, FSH and LH. Mutation analysis revealed CYP17A1-homozygous mutation (c.287G>A p.Arg96Gln) resulting in the complete absence of 17α-hydroxylase/17,20-lyase activity. The patient was treated with dexamethasone and ethinyl estradiol with cessation of anti-hypertensive therapy. A review of the literature was conducted to identify previous studies related to this subtype of CAH. This is the first biochemically and genetically proven case of CAH due to 17α-hydroxylase/17,20-lyase deficiency in Oman and in the Arab World described in the literature.

14.
J Obstet Gynaecol ; 33(8): 781-6, 2013 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-24219713

RESUMO

Assisted vaginal delivery using forceps or a vacuum extractor is an essential part of obstetric practice. Operative vaginal delivery rates in the UK have remained stable between 10% and 15%, yielding safe and satisfactory outcomes for the majority of mothers and their babies. However, there has been an increase in medico-legal cases due to an increasing awareness of the potential morbidity for both the mother and the baby. There are many factors that can play a part in both the maternal and fetal complications resulting from instrumental deliveries. The aim of this educational review is to address these factors and identify measures to reduce them by adherence to the basics and relevant evidence.


Assuntos
Extração Obstétrica/efeitos adversos , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/prevenção & controle , Extração Obstétrica/legislação & jurisprudência , Extração Obstétrica/métodos , Feminino , Humanos , Doença Iatrogênica/prevenção & controle , Recém-Nascido , Doenças do Recém-Nascido/etiologia , Doenças do Recém-Nascido/prevenção & controle , Distúrbios do Assoalho Pélvico/etiologia , Distúrbios do Assoalho Pélvico/prevenção & controle , Hemorragia Pós-Parto/etiologia , Hemorragia Pós-Parto/prevenção & controle , Gravidez
15.
Water Sci Technol ; 67(4): 901-6, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23306271

RESUMO

Tubular nanofiltration membrane performance to treat water for reuse was carried out by choosing C.I. Acid Black 210 dye as a model dye. It has been shown that increasing pH causes reduction in irreversible fouling factor (IFF) and the dye removal is also affected by solution pH. The total organic carbon removal for pH 4, pH 7, pH 8 and pH 10 is 97.9, 92.3, 94.5 and 94.6%, respectively. The conductivity removal for pH 4, pH 7, pH 8 and pH 10 is 85.1, 88.3, 87.8 and 90.7% respectively. The increase in the initial dye concentration causes rapid increase in fouling until 100 mg/l. Then the fouling increases gradually as it reaches a maximum IFF around 13%. This study also shows that the colour of permeate changes from colourless to light greenish/yellowish (initial concentration of 2,000 and 4,000 mg/l) as the initial dye concentration increases. The conductivity removal was also reduced as the initial dye concentration increased due to screening of the Donnan effect with the presence of salt.


Assuntos
Compostos Azo/química , Naftalenossulfonatos/química , Eliminação de Resíduos Líquidos/métodos , Poluentes Químicos da Água/química , Concentração de Íons de Hidrogênio , Ultrafiltração
16.
J Hazard Mater ; 182(1-3): 624-30, 2010 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-20633995

RESUMO

The removal of C.I. Acid Black 210 dye from highly concentrated solutions was studied using a coagulation/flocculation process. Aluminium sulphate was used as a primary coagulant and five commercial polymers were used as flocculant aids. The five commercial polymers were ACCEPTA 2058 (poly-diallyl-dimethyl ammonium chloride), ACCEPTA 2047 (high molecular mass (MM) anionic polyacrylamide), ACCEPTA 2111 (high MM cationic polyacrylamide), ACCEPTA 2105 (Low-medium MM cationic polyacrylamide) and ACCEPTA 2037 (Composite of high MM cationic polyacrylamide-inorganic salt(s)). The five polymers behaved differently and they showed maximum colour removal increment in the order: ACCEPTA 2058 > ACCEPTA 2037 > ACCEPTA 2111 approximately = ACCEPTA 2047 > ACCEPTA 2105. Results also showed that the aluminium sulphate is important as primary coagulant and settling time has significant effect on the dye removal.


Assuntos
Corantes/isolamento & purificação , Polímeros/química , Alumínio/análise , Floculação , Concentração de Íons de Hidrogênio
17.
J Egypt Soc Parasitol ; 38(2): 501-10, 2008 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-18853623

RESUMO

The present study evaluated the diagnostic performance of a modification of the formol ethyl acetate concentration technique, with the addition of 25% acetic acid as compared with formol ethyl acetate concentration technique (FEA) and fecal parasite concentrator kit Fresh fecal material, free of ova and parasites, was pooled in a ratio of 1:4 with 10% buffered formalin to prepare a standardized specimen. Sufficient volumes of formalin-fixed suspension of Giardia lamblia cysts, Entamoeba histolytica cysts, Cryptosporidium oocysts; Ascaris lumbricoides ova, Necator americanus, Taenia spp. and Hymenolepis nana were used to seed individually 3-ml portions of the fecal specimen. The 3-ml samples were split in three parts, one processed by FEA, a second part with FPC and the third part by the modified FAEA; six smears from each sediment were examined by light microscopy. FAEA technique gave the clearest sediments and the highest numbers in most of the parasites. FAEA resulted in a higher percenttage of H. nana, Taenia spp., N. americanus, and G. lamblia per one ml of stool compared with FEA method. When compared with FPC, the same results were achieved in addition to E. histolytica.


Assuntos
Fezes/parasitologia , Enteropatias Parasitárias/diagnóstico , Contagem de Ovos de Parasitas/métodos , Animais , Ascaris lumbricoides/isolamento & purificação , Cryptosporidium/isolamento & purificação , Entamoeba histolytica/isolamento & purificação , Giardia lamblia/isolamento & purificação , Humanos , Hymenolepis/isolamento & purificação , Necator americanus/isolamento & purificação , Contagem de Ovos de Parasitas/normas , Sensibilidade e Especificidade , Manejo de Espécimes
18.
Adv Colloid Interface Sci ; 144(1-2): 54-65, 2008 Dec 02.
Artigo em Inglês | MEDLINE | ID: mdl-18834966

RESUMO

Interest in wetting dynamics processes has immensely increased during the past 10-15 years. In many industrial and medical applications, some strategies to control drop spreading on solid surfaces are being developed. One possibility is that a surfactant, a surface-active polymer, a polyelectrolyte or their mixture are added to a liquid (usually water). The main idea of the paper is to give an overview on some dynamic wetting and spreading phenomena in the presence of surfactants in the case of smooth or porous substrates, which can be either moderately or highly hydrophobic surfaces based on the literature data and the authors own investigations. Instability problems associated with spreading over dry or pre-wetted hydrophilic surfaces as well as over thin aqueous layers are briefly discussed. Toward a better understanding of the superspreading phenomenon, unusual wetting properties of trisiloxanes on hydrophobic surfaces are also discussed.


Assuntos
Tensoativos/química , Interações Hidrofóbicas e Hidrofílicas , Cinética , Siloxanas/química , Soluções/química , Propriedades de Superfície , Água , Molhabilidade
19.
Neurochirurgie ; 51(5): 464-70, 2005 Nov.
Artigo em Francês | MEDLINE | ID: mdl-16327679

RESUMO

We present a retrospective study on the management of 100 patients who presented epidural hematoma over a four-year period. Our goal was to provide an update on management of this injury. Computed tomography was performed because of the clinical presentation. Results provided information on the type of injury and appropriate treatment. A three-phase clinical progression was observed in only 6% of the patients. Despite state-of-the-art management, mortality remained high in these brain-injured patients (21%). No progress appears to have been achieved in the last ten years. This paradoxical fact probably results from the enhanced severity observed in our patients, who often suffered from associated intracranial injuries as well as multiple trauma (thoracic, abdominal trauma). Analysis study of the results confirms an improvement in mortality among patients with isolated epidural hematoma (6.6%), but great concern remains about the high mortality among patients with associated intracranial lesions (33.3%) or multiple trauma (32%).


Assuntos
Hematoma Epidural Craniano/cirurgia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos
20.
Ukr Biokhim Zh (1999) ; 77(4): 64-9, 2005.
Artigo em Ucraniano | MEDLINE | ID: mdl-16568605

RESUMO

Structural and morphological characteristics of composite imprinted membranes for selective recognizing of adenosine 3',5'-cyclic monophosphate (cAMP) were studied. Composite polyvinylidene fluoride microfiltration membranes (Millipore) covered with a thin imprinted polymer layer were prepared using photoinitiated copolymerization of dimethylaminoethylmetacrylate with trimethylolpropanethrimethacrylate in the presence of cAMP as template. Atomic force microscopy (AFM) and scanning electron microscopy (SEM) were used to visualise surfaces and cross-sections of imprinted membranes and to determine their structural and morphological parameters such as pore size, thickness of selective imprinted layer, surface roughness as well as total surface contact area. The impact of structural characteristics on separation properties of the imprinted membranes was analyzed. It was found out that the thickness of the imprinted polymer layer with optimal recognizing properties is limited.


Assuntos
AMP Cíclico/análise , Membranas Artificiais , Polímeros/química , Cinética , Microscopia de Força Atômica , Microscopia Eletrônica de Varredura , Propriedades de Superfície
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...