Search PubMed⌕ Search

Biomedical subjects

N Haddad

Publications and source records attributed to N Haddad.

At least 19 recordsLinked to original sources
PubMed1992

Transport in vitro fertilization--a novel scheme for community-based treatment.

OBJECTIVE: To provide an inexpensive and extensive in vitro fertilization (IVF) service for the Mersey Region, United Kingdom. DESIGN: Twenty-four transport IVF patients treated in two district general hospitals using the central university laboratory as co-ordination point for treatment schedule and embryology. Outcomes were compared with 26 control patients treated in the central unit. SETTING: Royal Liverpool University Hospital, a central IVF unit, and two district general hospitals in the Mersey Region. PATIENTS: Fifty patients under 35 years of age with irreversible tubal damage selected and treated by IVF, half in the central unit and the other half in two district general hospitals. MAIN OUTCOME MEASURES: Pregnancy rate (PR) in the different centers. RESULTS: A PR of 42.3% per cycle in the peripheral hospitals compared with 30.7% per cycle in the central unit. CONCLUSION: Transport IVF is an inexpensive and feasible alternative to standard IVF in a central unit for patients without access to central units.

Adult↗
PubMed1987

[Serological evaluation of the efficacy of an antirabies vaccine in field dogs in Tunisia].

We have vaccinated with an inactivated experimental vaccine, Rabi Rabta, prepared in lamb brain 52 dogs from the field in Tunisia and we tested by recommended serological methods the production of specific antibodies. The animals (35) received a boost injection after one year and the control of the immunological response was done on the same way after one month. This work done on 27 dogs showed very low serological data. A comparable batch of 42 dogs was immunised with a commercial vaccine with the same procedure; the results obtained from 17 dogs were not very different. This is apparently in contradiction with the success obtained by the National Program against Rabies launched in Tunisia since 1982.

Animals↗
PubMed1982

Double blind trial on the effect of certain soluble cytoplasmic mycobacterial antigens on the late reactivity to lepromin.

Two hundred forty-four children between six months and 59 months of age from nursery schools and playgrounds in Ribeirão Preto, São Paulo, Brazil, were randomly allocated into five groups. These received: 1) intradermal BCG; 2) placebo; 3) antigen F, containing soluble cytoplasmic components of the mycobacteria Mycobacterium tuberculosis, M. aquae, and M. lepraemurium; 4) antigen G, containing soluble cytoplasmic components of M. piscium, and M. balnei, and 5) antigen H, containing soluble cytoplasmic components of M. leprae. BCG preinjected children had the highest proportion of positive late lepromin reactions. The injection of antigens F, G, or H had no effect on the late lepromin reactions. These findings contrasted with those observed in our earlier trial in which the injection of antigens X (containing soluble cytoplasmic components of the mycobacteria M. avium and M. gallinarum), Y (M. simiae, M. gallinarum, and M. avium), and Z (M. leprae, M. simiae, and M. borstelense) had caused significantly lower positive late lepromin reactions. By comparing the data of the present investigation with the findings of the first trial, it appears that the antigens obtained from M. borstelense and from either M. avium or M. gallinarum could have been instrumental in the impairment of lepromin activity observed in the first trial.

Antigens, Bacterial↗
PubMed1982

[Comparative analysis of the clinical diagnosis of hanseniasis and the histopathological examinations performed according to the criteria of the Madrid and Ridley-Jopling classifications].

A comparative study of the Ridley-Jopling's (RJ) and of the Congress of Madrid's (CM) pathological criteria was made in the different clinical types and groups of hanseniasis. A concordance between both criteria was found in the Indeterminate group and in the regressive phases of the Virchowian (V), Tuberculoid (T) and Reactional tuberculoid (RT) types. Clinical RT was confirmed by pathology in 81.2% of the cases according to CM, whereas 46.2% were considered "Borderline" according to RJ. Out of the 48 clinically V patients, 17 (35.4%) were "Borderline" (BL-2, BL-1 and BB), but practically all were also pathologically V according to CM. It is concluded that there is no practical convenience in the establishment of histopathological sub-groups that do not perfectly agree with clinical criteria. The Authors stress the importance of the study of the plasmocytes in the V infiltrates, of the lymphocytes in all granulomas and of the differences in the involvement of the neural ends, specially between the T and V poles. The dyeing of lipids by the Sudan III is useful to perfectly characterize the V pole, recognize residual V structures, separate the sub-groups BT, BB and BL, help in the early diagnosis of V infiltrations and differentiate the edematous, diffuse, non-granular cytoplasmatic vacuolization of RT.

Humans↗
PubMed1981

Epidemiological survey of skin diseases in schoolchildren living in the Purus Valley (Acre State, Amazonia, Brazil).

A total of 9,955 schoolchildren aged 6-16 years have been examined in a tropical region. The prevalence of dermatosis varied from 21 to 87% in the municipalities surveyed. The most common dermatoses were pediculosis (prevalence 50%), nevi (16.8%), pityriasis versicolor (13.2%), pyoderma (12.2%), pityriasis alba (9.9%), dermatophytosis (6.2%), viral dermatosis (6.2%), scabies (3.0%) and acne vulgaris (2.7%). The prevalence of angular stomatitis, miliaria rubra, candidiasis, piedra nigra, keratosis pilaris, ephelides and geographic tongue is lower but still relatively high. Females had higher rates of pediculosis capitis and males higher prevalence of pityriasis alba. The prevalence of pityriasis versicolor, pigmented nevus and scabies was similar in males and females. Folliculitis, macular pigmented nevi and especially pityriasis versicolor tended to increase with age. Leprosy is hyperendemic in the surveyed area and its rate in the schoolchildren examined was 0.08%. Population movement (urbanization), socioeconomic situation, living conditions, promiscuity, and lack of hygiene may be the cause of such high prevalence and of association of two or more skin conditions. Climatic conditions might have enhanced the prevalence of certain dermatoses (pityriasis versicolor, dermatophytosis, piedra nigra, candidiasis, miliaria rubra).

Adolescent↗
PubMed1975

Impairment of reactivity to lepromin by mycobacterial antigens related to, or identical with, Mycobacterium leprae.

Three hundred and twenty young children were injected with Bacillus Calmette-Guerin (BCG) saline, or with one of the mycobacterial cytoplasmic antigens related with Mycobacterium leprae. At an appropriate time thereafter they were tested for dermal hypersensitivity to the antigens and for reactions to lepromin. Whereas all the antigens induced cell-mediated immunity, the incidence and intensity of late response to lepromin were significantly reduced in children preinjected with the cytoplasmic mycobacterial antigens, as contrasted with increased lepromin reactivity in the BCG group and with the findings in saline-injected children.

Antigens, Bacterial↗