Removability Efficiency of Heavy Metals with Modified Humate from Aqueous Media

<p>The main aim of this work was to study the possibility of using amine-modified humate as a sorbent for the purification of water from heavy metal ions (Cu&amp;Co). One of the effective methods of creating new sorbents of humic acids is chemical modification based on the high reactivity of the functional groups in the composition of humic acids. The possibility of modification of humic acid with bis(3-aminopropyl)  amine was illustrated. Modification was carried out with the aim of increasing its sorption capacity. Metal-humate complexes were also obtained by an ion-exchange procedure with modified humate (Mod-Hum) by employing metal salts such as Cu(CH₃COO)₂·H₂O, Co(CH₃COO)₂·4H₂O. Maximum sorption percentages of Mod-Hum achieved were about 99.2% for Cu (II) and 90% for Co (II). The sorption degree depending on pH changes was studied in the range of 2 to 8, the sorption ability of the sorbents was stated to increase with the increase in pH. The degree of sorption of copper (ІІ) on Mod-Hum in the studied range of рН 5 was higher and of cobalt (II) for which the sorption is optimal at higher values (рН 7-8). It is stated that sorption degree increases with the increase in time from 15 min to 2 h. The adsorption of toxic metal ions with Mod-Hum was measured by atomic absorption spectroscopy (AAS). The experimental results on determination of the adsorption isotherm were evaluated with the Langmuir equation. It is shown that the sorbent develops a high sorption capacity in regard to ions of Cu (18.42 mg/g) and Со (16.25 mg/g). All the obtained complex compounds were analyzed and characterized by FT infrared spectroscopy (FTIR), scanning electron microscopy (SEM).</p>

Brucellosis as a trigger agent for Henoch-Schönlein purpura

Vasculitis in childhood is a result of a spectrum of causes ranging from idiopathic conditions with primary vessel inflammation to syndromes after exposure to recognized antigenic triggers, such as infectious agents and drugs causing hypersensitivity reactions. Henoch-Schönlein purpura (HSP) is the most common vasculitis of childhood. Although there is often a history of a recent or simultaneous upper respiratory tract infection, no consistent causative organism is found. We report an 11-year old boy with HSP and brucellosis and we speculated that brucellosis was the trigger agent for HSP (Ref. 13).

KEYWORDS

brucellosis, trigger agent, Henoch-Schönlein purpura, vasculitis, infectious agents, drug, hypersensitivity reactions, primary vessel inflammation.

Report of a girl with vacterl syndrome and right pulmonary agenesis

Report of a girl with VACTERL syndrome and right pulmonary agenesis: VACTERL syndrome is a combination of vertebral anomalies (V), anal atresia (A), congenital heart defects (C), tracheo-esophageal fistula (T), esophageal atresia (E), abnormalities of kidneys (renal anomalies, R) and limbs (L). In the present patient right pulmonary agenesis is co-occurring with VACTERL syndrome. We report on this case because the association of right pulmonary agenesis and VACTERL syndrome is rare.

Rubinstein-Taybi syndrome and CREBBP c.201 202delTA mutation: a case presenting with varicella meningoencephalitis

Rubinstein-Taybi syndrome (RTS) is a rare syndrome with a frequency of approximately 1 in 125,000 affected newborns, which is characterized by mental retardation, growth retardation, a particular dysmorphology and, in a subset of cases, immunodeficiency. RTS is typically caused by CREBBP deficiency, and heterozygous mutation or deletion of the CREBBP gene has been identified in 60-70% of patients. The inheritance is autosomal dominant but reports of vertical transmission are exceedingly rare; near-all cases are caused by de novo mutations. Here we present an 8-month-old boy with varicella meningoencephalitis, RTS, and a de novo deletion of the CREBBP gene of two base pairs at position 201-202 in exon 2, c. 201 202delT. The mutation has not been described previously but it predicts a protein truncation, and truncating CREBBP mutations are typical causes of RTS.

Comparison of nifedipine and captopril in children with pulmonary hypertension due to bronchopneumonia

This study included 40 children, who were diagnosed with pneumonia and pulmonary hypertension (from the radiographic and clinical features), was performed at Yuzuncu Yil University Faculty of Medicine, Department of Pediatrics, from September 2003 to July 2005. Patients who had pneumonia and congenital heart disease or systemic hypertension or renal and liver disease together were excluded from the study. Blood gas analysis and oxygen concentration, measured with pulse oximetry, were performed in all patients. Besides chest X-ray, electrocardiography and echocardiographic search was also carried out. Echocardiographic examination was performed by using M mode, two-dimensional echocardiography and colored Doppler sonotron Vingmed CFM 725. At echocardiographic examination, pulmonary hypertension is defined as above 35 mmHg of pulmonary artery pressure. For echocardiographic examination, patients with pulmonary hypertension were divided into two groups. Captopril (2 mg/kg/day, three doses a day) and nifedipine (0.5 mg/kg/day, three doses a day) were given to the first and the second group, respectively. Echocardiography was performed daily until normal pulmonary artery pressure was achieved. At the beginning of the treatment, the patients were treated with double antibiotics and antibiotic change was carried out in needed cases at the follow up. Digoxin was administered to the cases of respiratory infection with heart failure.