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AUTOLOGOUS SERUM INJECTION IN CHRONIC URTICARIAL

Dhari Kettan Aouda Aladwan and Saja Mohammed Abbas. 1. MBChB, DVD (dermatology)Head of department of dermatology, Al-Yarmouk Teaching Hospital 2. MBChB, DVD (dermatology), Dermatologist, Al-Yarmouk Teaching Hospital. . Manuscript Info Abstract . . Manuscript History


1596
It is one of the demanding and bothersome therapeutic problems seen by dermatologist (1) and it is classified according to the aggravating factors, among the aggravation factors are the autoantibody. Since 1993, Hide et al (6) partially resolved the autoimmune issue of the problem, these autoantibodies are reported in 27-61% of patients with chronic urticaria (3), (9) . This is why some patients respond well to steroid therapy. Staubach et al in 2006 defined the benefit from the serial intramuscular injections of autologous whole blood therapy in the treatment of this type of urticaria and other problems like atopic dermatitis. (10) The aim:-To assess the effectiveness of autologous serum therapy in treatment of chronic urticaria in relation to the age, gender and duration of disease.

Patients and method:-
The current study was conducted at dermatology consultation unit in Al-Yarmouk Teaching Hospital during the period from August 2016 to September 2017. It included 30 patients. All patients presented with chronic urticaria which failed to responsed to other forms of treatment. Full history was taken and thorough physical examination was conducted to all patients. Ethically the procedure was explained to all and written consent was taken from every patient.
Five cc venous blood was withdrawn from the patient arm, centrifuged in sterile tube (4000 RPM) for 10 minutes, 2-3 ml of the patient serum was injected intramuscularly, the process was repeated weekly for 9 weeks and the patients were followed up to 24 weeks. Disease assessment was done clinically, the need for antihistamines and the effect of the disease on quality of life of the patient and observation of any complications.

Discussion:-
Chronic urticaria is a broad term, it cover both physical, chronic "idiopathic" and urticarial vasculitis. Investigations and treatments are different in physical urticaria were it diverge in important ways from patients with idiopathic chronic urticaria or urticarial vasculitis.
"Chronic "idiopathic" type includes a division with an autoimmune source attributable to circulating autoantibodies against the high affinity IgE receptor (FceR1) and less commonly against IgE". (7) These are better termed as autoimmune urticaria in whom immunosuppressive therapies may be suitable if conventional approaches to management are ineffective. (4) "Although the autologous serum skin test has been proven useful in prompting search for and characterization of circulating wheal-producing factors in chronic urticaria, its specificity as a screening test for presence of functional anti-FceR1 is low, and confirmation by demonstration of histamine-releasing activity in the patient's serum must be the benchmark test in establishing this diagnosis. Improved screening tests are being sought; for example, ability of the chronic urticaria patient's serum to evoke expression of CD 203c on donor human basophils is showing some promise". (7) These tests form the bases of using autologous serum therapy in CU, however, Bajaj et al concluded that autologous serum skin test reactivity may not consistently reflect the chances of response since many negative patient may also benefited by this form of treatment. (1) Autologous serum is preferred over whole blood in the treatment since the important factors are found in the serum, hence a more comfortable fine needles can be used for injection with no risk of serum clotting. (1) Nearly 15 -20 % of population will suffer on one occasion from urticaria during their lifetime and it can affect any person at any age however most frequently after adolescence, young adults being the most common target affected. (5) In the current study, data obtained from table no. 1 revealed that over 80% of the patients were over the age of 21 years and over one third of them (36.3%) were in the 3 rd decade of life. These results run parallel to results documented by Deacock who stated that 20 -40 years period of age was the commonest period for incidence of urticaria. (2) Gender distribution in the current study revealed that females (63.33%) were more affected than males (36.66%), female to male ratio was 1.7:1. Yadav S et al in their study stated that CU is twice as common in females as in males (11) and Deacock in his study also revealed that urticaria is more common in females than males. (2) Table no. 2, shows that nearly two thirds of the patients (19 patients, 63.3 %) have the symptoms for one year and less and only 3.3% of the patients have the symptoms for 10 years. Bajaj el al in their study revealed that the duration of the disease ranged from 6 months to 32 years if positive autologous serum skin test and reduced to up 10 years in patients with negative skin test. (1) Fifty percent of the involved patients completely responded to this form of treatment as delineated in table no.3 and 40% had partial improvement. S.Nageswaramma et al in their studies grouped the patients according to the positivity of autologous serum skin test into 2 groups, they documented that 37.9% of the +positive test group and 23.8% of the -negative test group at the end of follow up period showed complete response (collectively 61.7% ) and mild disease was shown in 27.5% and 19% respectively. (8) Table no. 4 reveals the response to treatment in relation to the age, gender and duration of the disease. The complete response group was 15 patients (50%), 7 were females (46.6%) and 8 were males (53.3%). The partial response 1599 group was 12 patients (40%), females were 10 (83.3%) and males were 2 (16.6%), and the no response group were 3 (10%), 2 of them were females (66.6%). And according to age date better responses were documented when the age of the patients was between 30 and 50 years. Response is expected more when the duration is relatively short as revealed in the same table in the complete response group, 14 (93.3%) had the symptoms for 2 years and less. Hence, good response is revealed in the studied group, these results run parallel to results documented by Staubach et al. (10) in 2006, they revealed significant reduction in CU activity and decrease in the use of antihistamines by their patients after injection of autologous whole blood.

Conclusions:-
There is promising response of this type of treatment. Better responses are reported in females, age between 30 and 50 years and with shorter duration of symptoms