Wani mutum dan kasar Amurka ya zama mutum na farko a duniya da aka dasa wa zuciyar wani alade da aka gyara ta hanyar ƙwayoyin halitta. David Bennett, mai shekaru 57, wanda a baya likitocin suka ce ba shi da lafiya sosai, har ya fara muddin lafiya kwanaki uku bayan aikin. Mutane da yawa suna yaba aikin tiyatar a matsayin wani ci gaba a fannin likitanci wanda zai iya rage lokacin dasawa da kuma canza rayuwar marasa lafiya a duniya. Amma wasu suna tambayar ko tsarin da ake bi wajen yin aikin zai iya zama wanda ya kamata.
Sun yi nuni da yiwuwar take hakkin dabbobi da kuma yiwuwar tabo wani bangaren jiki da hakan ka iya zama mai hadari. Don haka muhawa a kan wannan batu ta kaure. Wannan tiyata ce ta gwaji, kuma tana kawo babban haɗari ga majiyyaci. Sannan ko da an yi nasarar yin dashen jikin mutum na iya karɓar zuciyar ya yi aiki da ita. Likitoci sun yi ta ƙoƙarin fara wannan aiki na xenotransplantation na dashen wasu sassan gabobin jikin dabbobi da dan adam duk da wasu lokutan akan yi nasara wasu lokutan kuma a gaza samun nasa. A shekara ta 1984, likitoci a California sun yi ƙoƙari su ceci rayuwar wata yarinya ta hanyar dasa mata zuciyar wani gwaggon biri, daga baya ta rasa ranta bayan kwanaki 21. Ba za ku taba sanin ko mutum zai mutu ba har sai an gama aiki, ba abun da ba kasada a cikinsa ” in ji Farfesa Julian Savulescu, wani malami a Jami’ar Oxford.
Ya kara da cewa “Muddin mutum ya fahimci cikakken hadarin da ke tattare da shi, ina ganin ya kamata mutane su amince da wannan aiki. Farfesa Savulescu ya ce yana da muhimmanci a ba su damar amfani da duk wani zabi da ake da shi. Farfesa Savulescu ya ce kafin kowacce tiyata, dole ne a yi gagarumin gwaji ga dabbar da za a ciri wani sashenta don tabbatar da cewa lafiyarta lau. Sai dai Dr Christine Lau daga Jami’ar Maryland School of Medicine, wacce ke da hannu wajen tsara aikin da aka yi wa Mista Bennett, ta ce ba inda aka yanke a jikinsa lokacin da ake aikin. Mun shafe shekaru da yawa muna gwaje-gwaje, tare da ƙoƙarin ganin yadda za mu yi wannan aikin cikin nasara,” kamar yadda ta shaida wa BBC.
Jinyar da Mista Bennett ya yi ta kuma sake haifar da muhawara kan amfani da aladu wajen dashen dan Adam, wanda kungiyoyin kare hakkin dabbobi da dama ke adawa da shi. Allah wadai da dashen zuciyar alade na Mr Bennett da cewa: “An nuna rashin imani, da kuma almubazzaranci da dabbobin da ake da su”. Dabbobi ba yasassu ba ne, ba shara ba ce, su ma rayayyu ne da suke da damar rayuwa cikin aminci ba tare da kowanne haɗari ba,” in ji PETA. Masu fafutuka sun ce ba dai-dai ba ne a canza ƙwayoyin halittar dabbobi domin su zama kamar mutane. Masana kimiyya dai sun canza aƙalla ƙwayoyin halitta 10 na aladen da aka yi amfani da zuciyarsa wajen dashen da aka yi wa Mista Bennett don kada jikinsa ya ƙi karɓa.