Inhibitory effect of cerebrospinal fluid on the growth of meningococci and pneumococci.
نویسندگان
چکیده
Initial cerebrospinal fluid (CSF) samples obtained from patients with pneumococcal meningitis usually contain far greater numbers of bacteria than initial CSF samples obtained from patients with meningococcal meningitis. Normal CSF was found to have an inhibitory effect on the growth of group A meningococci but not on type 1 pneumococci. The inhibitory effect of normal CSF was abolished by dialysis, indicating that the inhibitory factor has a low molecular weight. Heating normal CSF to 62.5 degrees C for 30 min resulted in a considerable reduction in the inhibitory effect, indicating that the inhibitory factor is heat labile.
منابع مشابه
[Etiological profile of bacterial meningitis in children].
OBJECTIVE To determine the etiologic profile and analyze some epidemiological aspects of children with bacterial meningitis admitted to a public teaching hospital. METHODS A prospective study was conducted on children with clinical and laboratory diagnosis of bacterial meningitis, admitted to Hospital das Clínicas da Universidade Federal de Uberlândia, from January 1987 to January 2001. Patie...
متن کاملThe Comparison of Leukemia Inhibitory Factor (LIF) Concentration in the Serum and Cerebrospinal Fluid of Children with Bacterial Meningitis
Abstract Background and objectives: Meningitis is one of the most common infectious of the central nervous system (CNS), defined as an inflammation of the meninges. LIF is a potent pro-inflammatory factor. Cerebrospinal fluid (CSF) contains the growth factors and cytokines whose concentrations have been changed in most neurological diseases. The aim of this study was to determine the LIF conce...
متن کاملCerebrospinal fluid nerve growth factor and total protein concentration in the children with meningitis
Meningitis is one of the most common infectious cerebral nervous system (CNS), defined as an inflammation of the meninges. It is clinically categorized into a chronic and acute based on the acuity of symptoms. Vomiting, bulging fontanel and fever are the main symptoms in the patients with meningitis. Bacterial meningitis is a severe, potentially life-threatening infection that is associated wit...
متن کاملThe effect of cerebrospinal fluid-derived exosomes on neural differentiation of adipose mesenchymal stem cells in alginate hydrogel scaffold
Nowadays, researchers have made extensive efforts to find new treatments for nerve damage. Meanwhile, the role of exosomes in cell-cell communication is considered to be a new mechanism. Exosomes can act as suitable differentiating agents. The aim of this study was to investigate the differentiating effect of cerebrospinal fluid-derived exosomes on adipose mesenchymal stem cells in alginate hyd...
متن کاملRelative expression of fibroblast growth factor-1 in the cerebrospinal fluid of patients with bacterial meningitis; A Western Blot analysis
Meningitis is an inflammation of the membranes that surround the brain and spinal cord, thereby involving the arachnoid, the pia and the cerebrospinal fluid (CSF). It is divided into viral and bacterial meningitis. For different reasons the diagnosis of bacterial meningitis is very important. The examination of CSF samples may provide information about causative microorganism. The sensivity of ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Journal of clinical pathology
دوره 37 4 شماره
صفحات -
تاریخ انتشار 1984