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The detection of infectious mononucleosis antibodies by radioimmunoassay and ELISA.

An infectious mononucleosis receptor (IMR) preparation has been isolated from sheep erythrocyte stroma. This material was used to detect the presence of human infectious mononucleosis (IM) antibodies with rabbit anti-human immunoglobulin antisera by radioimmunoassay and ELISA. These procedures use 10-20 ng of IMR and 5-10 microliter of human serum. A single treatment of the IMR with neuraminidase reduces its ability to bind to the IM antibodies by 80%. In addition absorption of the IM sera with sheep red cells completely removes IM specific antibodies.

Animals↗

[Exudative pleurisy in infectious mononucleosis (author's transl)].

Three cases of infectious mononucleosis with concomitant exudative pleurisy are reported. In two of the patients atypical lymphocytes were detected in the pleural punctate. The effusion was sterile in all three cases. Involvement of the pleura in the general lymphoproliferative process in infectious mononucleosis is discussed as a pathogenetic mechanism.

Adolescent↗

Infectious mononucleosis and severe thrombocytopenia.

Two patients with infectious mononucleosis who presented with severe thrombocytopenia at diagnosis are described. Anti-platelet antibody was demonstrated in one patient. Both responded well to a short course of prednisone therapy. These cases are of interest in view of their rarity and illustrate the need for screening patients who present with thrombocytopenia for infectious mononucleosis.

Antibodies↗

[Neurological complications of infectious mononucleosis in 3 patients].

Neurological complications of infectious mononucleosis were seen in three patients, a boy aged 18 months and two women aged 70 and 51 years respectively: a Bell's palsy, polyradiculitis and transverse myelitis. In a patient with acute neurological symptoms without indications of any other cause, infectious mononucleosis should be considered.

Aged↗

An evaluation of the Monosticon rapid slide test diagnosis of infectious mononucleosis.

A new rapid slide test for the detection of infectious mononucleosis heterophile antibody has been compared with the Paul-Bunnell absorption test. Out of 200 sera, 46 were seropositive for infectious mononucleosis by the Paul-Bunnell test and 43 of these were detected by the Monosticon test; the three Monosticon-negative sera were of low titre. There was no problem with false positive reactions due to heterophile antibody not specific for infectious mononucleosis.

Animals↗

[Emotional disturbances in patients with infectious mononucleosis and serous meningitis].

30 patients with infectious mononucleosis (19 females and 11 males) and 30 ones with serous meningitis (16 females and 14 males) aged 16-35 years admitted to hospital on the disease day 2-14 were examined clinicopsychologically, clinicofunctionally and using laboratory tests. The examination has revealed emotional disturbances in 40% of patients with serous meningitis and 20% of those with infectious mononucleosis. Clinical manifestations were characterized by polymorphism, combination of somatovegetative and anxiodepressive disorders. Personality accentuations in the patients are described.

Adolescent↗

[Splenic rupture in infectious mononucleosis].

A 22 year old male with infectious mononucleosis, who stated a history of trauma to his left thoracic wall, developed an acute abdomen with symptoms of shock. A ruptured spleen was suspected. This working diagnosis, which was supported by ultrasound led to a splenectomy the initial diagnosis. The case report of this rare complication--due to the increased vulnerability of the spleen capsula in infectious mononucleosis--is highlighting the possible danger of splenic rupture. As of today, emergency splenectomy without any compromise ist still the safest state of the art therapy.

Abdomen, Acute↗

Persistent transfusion-associated infectious mononucleosis with transient acquired immunodeficiency.

Trauma and blood transfusion led to profound, persistent infectious mononucleosis in a 21 year old man. Splenectomy and trauma had apparently produced transient immune deficiency which was complicated by osteomyelitis of a fractured tibia. The transfused blood probably contained Epstein-Barr virus (EBV). Infectious mononucleosis had ensued 25 days after a blood transfusion was given, antibodies to EBV appeared in his serum, and the infectious mononucleosis persisted for nearly two years. His immunity returned gradually to normal, but because of nonunion of the fracture site, which was infected by Staphylococcus aureus, above-knee amputation was required. The acquired, transient immune deficiency to EBV and profound infectious mononucleosis seen in this patient is analogous to inherited, permanent immune deficiency to this virus in the X-linked lymphoproliferative syndrome.

Adult↗

[The nonserological diagnostic approach to infectious mononucleosis in an emergency service].

Patients with infectious mononucleosis often are seen in Emergency Services because the infection may produce tonsillitis resistant to antibiotic therapy. However, the diagnosis of choice is specific serology, which usually takes days or weeks before results become available. Detection of lymphocytosis in peripheral blood, heterophilic antibodies, and the characteristic mononuclear cells by means of specialized blood counters, together with the clinical signs, have improved the quality of diagnosis in emergency services (93% sensitivity and 97.2% specificity). We found that simple identification by optical microscopy of the lymphomonocytes typical of infectious mononucleosis in a drop of peripheral blood, together with the clinical findings, have a better diagnostic sensitivity (96. 5%) and specificity (99.1%) than any other method available in emergency services.

Adolescent↗

[Current aspects of infectious mononucleosis].

The authors discuss present aspects in infectious mononucleosis, with reference to the cases admitted to the Clinic of communicable Diseases of Cluj-Napoca, i.e. 115 cases during the 1954--1973 period (3 to 13 cases a year). In most cases the clinical symptomatology was mild and the laboratory tests typical not giving rise to any diagnostic difficulties. However, 28 cases (25%) presented jaundice, with positive hepatic tests, so that a differential diagnosis was established with viral hepatitis. In 9 cases nervous manifestations were reported: 4 encephalitis, 1 neuritis of the hypoglossal nerve, 2 facial paralysis, 2 benign serous meningitis cases, all of which fully recovered. The Paul Bunnel-Hăngănuţiu test was positive in titers of 1 : 40 -- 1 : 1280, in all the cases. Corticotherapy was applied with good results in 24 cases. All the cases ran a favourable course. On admission, 45% of the patients came with a diagnosis of infectious mononucleosis; the others were admitted with a diagnosis of : diphteric angina, viral hepatitis, influenza, German measles, mups, typhoid fever, prolonged febrile syndrome.

Adolescent↗

Measurement of heterophil antibody and antibodies to EB viral capsid antigen IgG and IgM in suspected cases of infectious mononucleosis.

The EBV IgG titres in acute and convalescent specimens from 97 cases of infectious mononucleosis were compared with titres from acute and convalescent sera from 96 students with illnesses resembling infectious mononucleosis but without heterophil antibody, EB IgM or EB IgG seroconversion; and also with titres from 91 healthy students known to have had EB IgG antibody for at least six months. These titres were related to the titre of the Research Standard A.66/235 for infectious mononucleosis serum prepared by the National Institute for Biological Standards and Control. Serial sera were tested for heterophil antibody and EBVCA specific IgG and IgM from 61 university students with infectious mononucleosis. The period of persistence of heterophil antibody and EBV IgM after illness was outlined from the results of the tests. Single sera from 406 patients in hospital or general practice sent to the diagnostic laboratory for heterophil antibody tests were also tested for EBV antibodies without prior knowledge of the heterophil antibody result. The close agreement between heterophil antibody and EBV IgM results is shown. False positive EB IgM results were correlated with the presence of rheumatoid factor.

Antibodies, Heterophile↗

[ Polyclonal gammopathy in children with infectious mononucleosis (author's transl)].

Serum proteins and immunoglobulins were investigated in children with infectious mononucleosis. The results were as follows: 1. Most striking changes in serum protein patterns were increased levels of immunoglobulins. The resulting gammopathies are of symmetric and/or asymmetric type with a beta-gamma bridge.--2. Increased levels of immunoglobulins included all principal immunoglobulin classes IgG, IgM and IgA.--3. Polyclonal gammopathy in infectious mononucleosis did neither reflect the intensity of hepatic involvement nor was a sign for persisting or progressive hepatitis.--4. The type of gammopathies found seems to justify those clinicians, who did not consider to be usefull the application of gammaglobulin in the course of infectious mononucleosis. 5. Suggestion. If it is correct to assume according to Benyeschel-Melnick et al., that the raised production of antibodies in infectious monucleosis limits the further course of the disease, and is the defense against the development of leukemia, it would be necessary to reevaluate the application of corticoid therapy in infectious mononucleosis. This therapy should be reserved for life threatening complciations only.

Adolescent↗

Smooth muscle autoantibodies in infectious mononucleosis.

Smooth muscle antibodies (S.M.A.) were found in the sera of 81% of 126 patients over 10 years old with seropositive infectious mononucleosis tested within one month of onset. In 27 patients presenting clinically with infectious mononucleosis but having negative Paul-Bunnell tests the incidence of S.M.A. was 44%. In children 10 years of age or less in these two categories S.M.A. were present in 75% and 25% respectively, while in children of similar age not suspected of having infectious mononucleosis the incidence of S.M.A. was 10%. Among 45 adults with past histories of seropositive infectious mononucleosis more than one year before the incidence of S.M.A. was 33%, in contrast to 14% in 98 subjects with a negative history for infectious mononucleosis.

Adolescent↗

Severe neutropenia in infectious mononucleosis.

Mild neutropenia is a well-known concomitant of infectious mononucleosis caused by the Epstein-Barr virus (EBV) occurring in the first weeks of illness. However, severe neutropenia (less than 200 polymorphonuclear leukocytes per mul) is not generally regarded as a complication of infectious mononucleosis. Three patients were seen with severe neutropenia and EBV infection, and an additional eight cases were found in the literature. In two of the latter cases the neutropenia was fatal. In the 11 cases the severe neutropenia began 14 to 40 days after illness and usually lasted for three to seven days. At the time of severe neutropenia, studies of marrow specimens showed increased proportions of promyelocytes and myelocytes. Our data suggest that EBV infection is the proximate cause of the severe neutropenia in some patients with infectious mononucleosis and that in such cases close observation and early treatment of suspected superinfections is necessary.

Adolescent↗

Surgical implications of infectious mononucleosis.

A series of 50 consecutive patients admitted to the hospital with a primary diagnosis of infectious mononucleosis is reviewed, with particular emphasis on the abdominal complaints and physical findings. Forty-eight percent of the patients had abdominal pain. Abdominal symptoms were the chief complaint in 24 percent of the patients. Two cases of splenic rupture are presented. One case of spontaneous rupture of the spleen is emphasized, as there are only 18 well-documented cases of true spontaneous rupture of the spleen in infectious mononucleosis. Four young persons with infectious mononucleosis in Portland, Oregon, recently bled to death at home from a ruptured spleen. Guidelines are presented to aid the surgeon in evaluating the patient with infectious mononucleosis. The risk of splenic rupture persists after the patient recovers. Recommendations are made regarding the resumption of physical activity in these young, active patients.

Abdomen, Acute↗

[Spontaneous splenic rupture as a complication of infectious mononucleosis].

Spontaneous splenic rupture as a complication of infectious mononucleosis in 17-years old man was described. Clinical manifestations of infectious mononucleosis were typical without any sign of the splenic rupture. At the end of third week of the disease sonographic investigation revealed subcapsular hematoma of the spleen without overt rupture. The patient was observed. Five days later in the next sonographic investigation the second hematoma of the spleen appeared. Patient was treated underwent splenectomy and he remain alive and well. Authors suggest that in cases with subcapsular hematoma of the spleen splenectomy remains the treatment of choice. Mononucleosis patients with significant enlarged spleen should be observed very carefully. Authors propose control sonographic investigation in 3rd or 4th week of the disease in those cases.

Adolescent↗

Hodgkin's disease and infectious mononucleosis.

Sequential sero-positive infectious mononucleosis is described in 3 sibs, 2 of whom subsequently developed Hodgkin's disease. EB virus antibodies were present in the serum of both cases.

Adolescent↗

False-positive epidemic infectious mononucleosis.

Investigation of four alleged infectious mononucleosis (IM) epidemics revealed that each resulted from either misuse or misinterpretation of mononucleosis slide tests. Even though such tests are a valuable, rapid adjunct to the diagnosis of IM, they must be carefully done with fresh reagents, using both positive and negative controls, and must be interpreted in the light of clinical findings and blood cell morphology.

Adolescent↗